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Stephen M. Cameronedd16362009-12-08 14:09:11 -08001/*
2 * Disk Array driver for HP Smart Array SAS controllers
Scott Teel51c35132014-02-18 13:57:26 -06003 * Copyright 2000, 2014 Hewlett-Packard Development Company, L.P.
Stephen M. Cameronedd16362009-12-08 14:09:11 -08004 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; version 2 of the License.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
12 * NON INFRINGEMENT. See the GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
17 *
18 * Questions/Comments/Bugfixes to iss_storagedev@hp.com
19 *
20 */
21
22#include <linux/module.h>
23#include <linux/interrupt.h>
24#include <linux/types.h>
25#include <linux/pci.h>
Matthew Garrette5a44df2011-11-11 11:14:23 -050026#include <linux/pci-aspm.h>
Stephen M. Cameronedd16362009-12-08 14:09:11 -080027#include <linux/kernel.h>
28#include <linux/slab.h>
29#include <linux/delay.h>
30#include <linux/fs.h>
31#include <linux/timer.h>
Stephen M. Cameronedd16362009-12-08 14:09:11 -080032#include <linux/init.h>
33#include <linux/spinlock.h>
Stephen M. Cameronedd16362009-12-08 14:09:11 -080034#include <linux/compat.h>
35#include <linux/blktrace_api.h>
36#include <linux/uaccess.h>
37#include <linux/io.h>
38#include <linux/dma-mapping.h>
39#include <linux/completion.h>
40#include <linux/moduleparam.h>
41#include <scsi/scsi.h>
42#include <scsi/scsi_cmnd.h>
43#include <scsi/scsi_device.h>
44#include <scsi/scsi_host.h>
Stephen M. Cameron667e23d2010-02-25 14:02:51 -060045#include <scsi/scsi_tcq.h>
Stephen M. Cameronedd16362009-12-08 14:09:11 -080046#include <linux/cciss_ioctl.h>
47#include <linux/string.h>
48#include <linux/bitmap.h>
Arun Sharma600634972011-07-26 16:09:06 -070049#include <linux/atomic.h>
Stephen M. Camerona0c12412011-10-26 16:22:04 -050050#include <linux/jiffies.h>
Stephen M. Cameron094963d2014-05-29 10:53:18 -050051#include <linux/percpu.h>
Stephen M. Cameron283b4a92014-02-18 13:55:33 -060052#include <asm/div64.h>
Stephen M. Cameronedd16362009-12-08 14:09:11 -080053#include "hpsa_cmd.h"
54#include "hpsa.h"
55
56/* HPSA_DRIVER_VERSION must be 3 byte values (0-255) separated by '.' */
Stephen M. Cameron9a993302014-03-13 17:13:06 -050057#define HPSA_DRIVER_VERSION "3.4.4-1"
Stephen M. Cameronedd16362009-12-08 14:09:11 -080058#define DRIVER_NAME "HP HPSA Driver (v " HPSA_DRIVER_VERSION ")"
Stephen M. Cameronf79cfec2012-01-19 14:00:59 -060059#define HPSA "hpsa"
Stephen M. Cameronedd16362009-12-08 14:09:11 -080060
61/* How long to wait (in milliseconds) for board to go into simple mode */
62#define MAX_CONFIG_WAIT 30000
63#define MAX_IOCTL_CONFIG_WAIT 1000
64
65/*define how many times we will try a command because of bus resets */
66#define MAX_CMD_RETRIES 3
67
68/* Embedded module documentation macros - see modules.h */
69MODULE_AUTHOR("Hewlett-Packard Company");
70MODULE_DESCRIPTION("Driver for HP Smart Array Controller version " \
71 HPSA_DRIVER_VERSION);
72MODULE_SUPPORTED_DEVICE("HP Smart Array Controllers");
73MODULE_VERSION(HPSA_DRIVER_VERSION);
74MODULE_LICENSE("GPL");
75
76static int hpsa_allow_any;
77module_param(hpsa_allow_any, int, S_IRUGO|S_IWUSR);
78MODULE_PARM_DESC(hpsa_allow_any,
79 "Allow hpsa driver to access unknown HP Smart Array hardware");
Stephen M. Cameron02ec19c2011-01-06 14:48:29 -060080static int hpsa_simple_mode;
81module_param(hpsa_simple_mode, int, S_IRUGO|S_IWUSR);
82MODULE_PARM_DESC(hpsa_simple_mode,
83 "Use 'simple mode' rather than 'performant mode'");
Stephen M. Cameronedd16362009-12-08 14:09:11 -080084
85/* define the PCI info for the cards we can control */
86static const struct pci_device_id hpsa_pci_device_id[] = {
Stephen M. Cameronedd16362009-12-08 14:09:11 -080087 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3241},
88 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3243},
89 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3245},
90 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3247},
91 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3249},
Mike Miller163dbcd2013-09-04 15:11:10 -050092 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324A},
93 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324B},
Mike Millerf8b01eb2010-02-04 08:42:45 -060094 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3233},
scameron@beardog.cce.hp.com9143a962011-03-07 10:44:16 -060095 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3350},
96 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3351},
97 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3352},
98 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3353},
99 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3354},
100 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3355},
101 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3356},
Mike Millerfe0c9612012-09-20 16:05:18 -0500102 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1921},
103 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1922},
104 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1923},
105 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1924},
106 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1925},
107 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1926},
108 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1928},
Mike Miller97b9f532013-09-04 15:05:55 -0500109 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1929},
110 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21BD},
111 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21BE},
112 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21BF},
113 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C0},
114 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C1},
115 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C2},
116 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C3},
117 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C4},
118 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C5},
Joe Handzik3b7a45e2014-05-08 14:27:24 -0500119 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C6},
Mike Miller97b9f532013-09-04 15:05:55 -0500120 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C7},
121 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C8},
122 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C9},
Joe Handzik3b7a45e2014-05-08 14:27:24 -0500123 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21CA},
124 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21CB},
125 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21CC},
126 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21CD},
127 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21CE},
Stephen M. Cameron8e616a52014-02-18 13:58:02 -0600128 {PCI_VENDOR_ID_HP_3PAR, 0x0075, 0x1590, 0x0076},
129 {PCI_VENDOR_ID_HP_3PAR, 0x0075, 0x1590, 0x0087},
130 {PCI_VENDOR_ID_HP_3PAR, 0x0075, 0x1590, 0x007D},
131 {PCI_VENDOR_ID_HP_3PAR, 0x0075, 0x1590, 0x0088},
132 {PCI_VENDOR_ID_HP, 0x333f, 0x103c, 0x333f},
Mike Miller7c03b872010-12-01 11:16:07 -0600133 {PCI_VENDOR_ID_HP, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
Stephen M. Cameron6798cc02010-06-16 13:51:20 -0500134 PCI_CLASS_STORAGE_RAID << 8, 0xffff << 8, 0},
Stephen M. Cameronedd16362009-12-08 14:09:11 -0800135 {0,}
136};
137
138MODULE_DEVICE_TABLE(pci, hpsa_pci_device_id);
139
140/* board_id = Subsystem Device ID & Vendor ID
141 * product = Marketing Name for the board
142 * access = Address of the struct of function pointers
143 */
144static struct board_type products[] = {
Stephen M. Cameronedd16362009-12-08 14:09:11 -0800145 {0x3241103C, "Smart Array P212", &SA5_access},
146 {0x3243103C, "Smart Array P410", &SA5_access},
147 {0x3245103C, "Smart Array P410i", &SA5_access},
148 {0x3247103C, "Smart Array P411", &SA5_access},
149 {0x3249103C, "Smart Array P812", &SA5_access},
Mike Miller163dbcd2013-09-04 15:11:10 -0500150 {0x324A103C, "Smart Array P712m", &SA5_access},
151 {0x324B103C, "Smart Array P711m", &SA5_access},
Mike Millerfe0c9612012-09-20 16:05:18 -0500152 {0x3350103C, "Smart Array P222", &SA5_access},
153 {0x3351103C, "Smart Array P420", &SA5_access},
154 {0x3352103C, "Smart Array P421", &SA5_access},
155 {0x3353103C, "Smart Array P822", &SA5_access},
156 {0x3354103C, "Smart Array P420i", &SA5_access},
157 {0x3355103C, "Smart Array P220i", &SA5_access},
158 {0x3356103C, "Smart Array P721m", &SA5_access},
Mike Miller1fd6c8e2013-09-04 15:08:29 -0500159 {0x1921103C, "Smart Array P830i", &SA5_access},
160 {0x1922103C, "Smart Array P430", &SA5_access},
161 {0x1923103C, "Smart Array P431", &SA5_access},
162 {0x1924103C, "Smart Array P830", &SA5_access},
163 {0x1926103C, "Smart Array P731m", &SA5_access},
164 {0x1928103C, "Smart Array P230i", &SA5_access},
165 {0x1929103C, "Smart Array P530", &SA5_access},
Mike Miller97b9f532013-09-04 15:05:55 -0500166 {0x21BD103C, "Smart Array", &SA5_access},
167 {0x21BE103C, "Smart Array", &SA5_access},
168 {0x21BF103C, "Smart Array", &SA5_access},
169 {0x21C0103C, "Smart Array", &SA5_access},
170 {0x21C1103C, "Smart Array", &SA5_access},
171 {0x21C2103C, "Smart Array", &SA5_access},
172 {0x21C3103C, "Smart Array", &SA5_access},
173 {0x21C4103C, "Smart Array", &SA5_access},
174 {0x21C5103C, "Smart Array", &SA5_access},
Joe Handzik3b7a45e2014-05-08 14:27:24 -0500175 {0x21C6103C, "Smart Array", &SA5_access},
Mike Miller97b9f532013-09-04 15:05:55 -0500176 {0x21C7103C, "Smart Array", &SA5_access},
177 {0x21C8103C, "Smart Array", &SA5_access},
178 {0x21C9103C, "Smart Array", &SA5_access},
Joe Handzik3b7a45e2014-05-08 14:27:24 -0500179 {0x21CA103C, "Smart Array", &SA5_access},
180 {0x21CB103C, "Smart Array", &SA5_access},
181 {0x21CC103C, "Smart Array", &SA5_access},
182 {0x21CD103C, "Smart Array", &SA5_access},
183 {0x21CE103C, "Smart Array", &SA5_access},
Stephen M. Cameron8e616a52014-02-18 13:58:02 -0600184 {0x00761590, "HP Storage P1224 Array Controller", &SA5_access},
185 {0x00871590, "HP Storage P1224e Array Controller", &SA5_access},
186 {0x007D1590, "HP Storage P1228 Array Controller", &SA5_access},
187 {0x00881590, "HP Storage P1228e Array Controller", &SA5_access},
188 {0x333f103c, "HP StorageWorks 1210m Array Controller", &SA5_access},
Stephen M. Cameronedd16362009-12-08 14:09:11 -0800189 {0xFFFF103C, "Unknown Smart Array", &SA5_access},
190};
191
192static int number_of_controllers;
193
Stephen M. Cameron10f66012010-06-16 13:51:50 -0500194static irqreturn_t do_hpsa_intr_intx(int irq, void *dev_id);
195static irqreturn_t do_hpsa_intr_msi(int irq, void *dev_id);
Stephen M. Cameronedd16362009-12-08 14:09:11 -0800196static int hpsa_ioctl(struct scsi_device *dev, int cmd, void *arg);
Stephen M. Cameron0b570752014-05-29 10:53:28 -0500197static void lock_and_start_io(struct ctlr_info *h);
198static void start_io(struct ctlr_info *h, unsigned long *flags);
Stephen M. Cameronedd16362009-12-08 14:09:11 -0800199
200#ifdef CONFIG_COMPAT
201static int hpsa_compat_ioctl(struct scsi_device *dev, int cmd, void *arg);
202#endif
203
204static void cmd_free(struct ctlr_info *h, struct CommandList *c);
205static void cmd_special_free(struct ctlr_info *h, struct CommandList *c);
206static struct CommandList *cmd_alloc(struct ctlr_info *h);
207static struct CommandList *cmd_special_alloc(struct ctlr_info *h);
Stephen M. Camerona2dac132013-02-20 11:24:41 -0600208static int fill_cmd(struct CommandList *c, u8 cmd, struct ctlr_info *h,
Stephen M. Cameronb7bb24e2014-02-18 13:57:11 -0600209 void *buff, size_t size, u16 page_code, unsigned char *scsi3addr,
Stephen M. Cameronedd16362009-12-08 14:09:11 -0800210 int cmd_type);
Stephen M. Cameronb7bb24e2014-02-18 13:57:11 -0600211#define VPD_PAGE (1 << 8)
Stephen M. Cameronedd16362009-12-08 14:09:11 -0800212
Jeff Garzikf2812332010-11-16 02:10:29 -0500213static int hpsa_scsi_queue_command(struct Scsi_Host *h, struct scsi_cmnd *cmd);
Stephen M. Camerona08a8472010-02-04 08:43:16 -0600214static void hpsa_scan_start(struct Scsi_Host *);
215static int hpsa_scan_finished(struct Scsi_Host *sh,
216 unsigned long elapsed_time);
Stephen M. Cameron667e23d2010-02-25 14:02:51 -0600217static int hpsa_change_queue_depth(struct scsi_device *sdev,
218 int qdepth, int reason);
Stephen M. Cameronedd16362009-12-08 14:09:11 -0800219
220static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd);
Stephen M. Cameron75167d22012-05-01 11:42:51 -0500221static int hpsa_eh_abort_handler(struct scsi_cmnd *scsicmd);
Stephen M. Cameronedd16362009-12-08 14:09:11 -0800222static int hpsa_slave_alloc(struct scsi_device *sdev);
223static void hpsa_slave_destroy(struct scsi_device *sdev);
224
Stephen M. Cameronedd16362009-12-08 14:09:11 -0800225static void hpsa_update_scsi_devices(struct ctlr_info *h, int hostno);
Stephen M. Cameronedd16362009-12-08 14:09:11 -0800226static int check_for_unit_attention(struct ctlr_info *h,
227 struct CommandList *c);
228static void check_ioctl_unit_attention(struct ctlr_info *h,
229 struct CommandList *c);
Don Brace303932f2010-02-04 08:42:40 -0600230/* performant mode helper functions */
231static void calc_bucket_map(int *bucket, int num_buckets,
Matt Gatese1f7de02014-02-18 13:55:17 -0600232 int nsgs, int min_blocks, int *bucket_map);
Greg Kroah-Hartman6f039792012-12-21 13:08:55 -0800233static void hpsa_put_ctlr_into_performant_mode(struct ctlr_info *h);
Matt Gates254f7962012-05-01 11:43:06 -0500234static inline u32 next_command(struct ctlr_info *h, u8 q);
Greg Kroah-Hartman6f039792012-12-21 13:08:55 -0800235static int hpsa_find_cfg_addrs(struct pci_dev *pdev, void __iomem *vaddr,
236 u32 *cfg_base_addr, u64 *cfg_base_addr_index,
237 u64 *cfg_offset);
238static int hpsa_pci_find_memory_BAR(struct pci_dev *pdev,
239 unsigned long *memory_bar);
240static int hpsa_lookup_board_id(struct pci_dev *pdev, u32 *board_id);
241static int hpsa_wait_for_board_state(struct pci_dev *pdev, void __iomem *vaddr,
242 int wait_for_ready);
Stephen M. Cameron75167d22012-05-01 11:42:51 -0500243static inline void finish_cmd(struct CommandList *c);
Stephen M. Cameron283b4a92014-02-18 13:55:33 -0600244static void hpsa_wait_for_mode_change_ack(struct ctlr_info *h);
Stephen M. Cameronfe5389c2011-01-06 14:48:03 -0600245#define BOARD_NOT_READY 0
246#define BOARD_READY 1
Stephen M. Cameron23100dd2014-02-18 13:57:37 -0600247static void hpsa_drain_accel_commands(struct ctlr_info *h);
Stephen M. Cameron76438d02014-02-18 13:55:43 -0600248static void hpsa_flush_cache(struct ctlr_info *h);
Scott Teelc3497752014-02-18 13:56:34 -0600249static int hpsa_scsi_ioaccel_queue_command(struct ctlr_info *h,
250 struct CommandList *c, u32 ioaccel_handle, u8 *cdb, int cdb_len,
251 u8 *scsi3addr);
Stephen M. Cameronedd16362009-12-08 14:09:11 -0800252
Stephen M. Cameronedd16362009-12-08 14:09:11 -0800253static inline struct ctlr_info *sdev_to_hba(struct scsi_device *sdev)
254{
255 unsigned long *priv = shost_priv(sdev->host);
256 return (struct ctlr_info *) *priv;
257}
258
Stephen M. Camerona23513e2010-02-04 08:43:11 -0600259static inline struct ctlr_info *shost_to_hba(struct Scsi_Host *sh)
260{
261 unsigned long *priv = shost_priv(sh);
262 return (struct ctlr_info *) *priv;
263}
264
Stephen M. Cameronedd16362009-12-08 14:09:11 -0800265static int check_for_unit_attention(struct ctlr_info *h,
266 struct CommandList *c)
267{
268 if (c->err_info->SenseInfo[2] != UNIT_ATTENTION)
269 return 0;
270
271 switch (c->err_info->SenseInfo[12]) {
272 case STATE_CHANGED:
Stephen M. Cameronf79cfec2012-01-19 14:00:59 -0600273 dev_warn(&h->pdev->dev, HPSA "%d: a state change "
Stephen M. Cameronedd16362009-12-08 14:09:11 -0800274 "detected, command retried\n", h->ctlr);
275 break;
276 case LUN_FAILED:
Stephen M. Cameronf79cfec2012-01-19 14:00:59 -0600277 dev_warn(&h->pdev->dev, HPSA "%d: LUN failure "
Stephen M. Cameronedd16362009-12-08 14:09:11 -0800278 "detected, action required\n", h->ctlr);
279 break;
280 case REPORT_LUNS_CHANGED:
Stephen M. Cameronf79cfec2012-01-19 14:00:59 -0600281 dev_warn(&h->pdev->dev, HPSA "%d: report LUN data "
Mike Miller31468402010-02-25 14:03:12 -0600282 "changed, action required\n", h->ctlr);
Stephen M. Cameronedd16362009-12-08 14:09:11 -0800283 /*
Scott Teel4f4eb9f2012-01-19 14:01:25 -0600284 * Note: this REPORT_LUNS_CHANGED condition only occurs on the external
285 * target (array) devices.
Stephen M. Cameronedd16362009-12-08 14:09:11 -0800286 */
287 break;
288 case POWER_OR_RESET:
Stephen M. Cameronf79cfec2012-01-19 14:00:59 -0600289 dev_warn(&h->pdev->dev, HPSA "%d: a power on "
Stephen M. Cameronedd16362009-12-08 14:09:11 -0800290 "or device reset detected\n", h->ctlr);
291 break;
292 case UNIT_ATTENTION_CLEARED:
Stephen M. Cameronf79cfec2012-01-19 14:00:59 -0600293 dev_warn(&h->pdev->dev, HPSA "%d: unit attention "
Stephen M. Cameronedd16362009-12-08 14:09:11 -0800294 "cleared by another initiator\n", h->ctlr);
295 break;
296 default:
Stephen M. Cameronf79cfec2012-01-19 14:00:59 -0600297 dev_warn(&h->pdev->dev, HPSA "%d: unknown "
Stephen M. Cameronedd16362009-12-08 14:09:11 -0800298 "unit attention detected\n", h->ctlr);
299 break;
300 }
301 return 1;
302}
303
Matt Bondurant852af202012-05-01 11:42:35 -0500304static int check_for_busy(struct ctlr_info *h, struct CommandList *c)
305{
306 if (c->err_info->CommandStatus != CMD_TARGET_STATUS ||
307 (c->err_info->ScsiStatus != SAM_STAT_BUSY &&
308 c->err_info->ScsiStatus != SAM_STAT_TASK_SET_FULL))
309 return 0;
310 dev_warn(&h->pdev->dev, HPSA "device busy");
311 return 1;
312}
313
Scott Teelda0697b2014-02-18 13:57:00 -0600314static ssize_t host_store_hp_ssd_smart_path_status(struct device *dev,
315 struct device_attribute *attr,
316 const char *buf, size_t count)
317{
318 int status, len;
319 struct ctlr_info *h;
320 struct Scsi_Host *shost = class_to_shost(dev);
321 char tmpbuf[10];
322
323 if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO))
324 return -EACCES;
325 len = count > sizeof(tmpbuf) - 1 ? sizeof(tmpbuf) - 1 : count;
326 strncpy(tmpbuf, buf, len);
327 tmpbuf[len] = '\0';
328 if (sscanf(tmpbuf, "%d", &status) != 1)
329 return -EINVAL;
330 h = shost_to_hba(shost);
331 h->acciopath_status = !!status;
332 dev_warn(&h->pdev->dev,
333 "hpsa: HP SSD Smart Path %s via sysfs update.\n",
334 h->acciopath_status ? "enabled" : "disabled");
335 return count;
336}
337
Stephen M. Cameron2ba8bfc2014-02-18 13:57:52 -0600338static ssize_t host_store_raid_offload_debug(struct device *dev,
339 struct device_attribute *attr,
340 const char *buf, size_t count)
341{
342 int debug_level, len;
343 struct ctlr_info *h;
344 struct Scsi_Host *shost = class_to_shost(dev);
345 char tmpbuf[10];
346
347 if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO))
348 return -EACCES;
349 len = count > sizeof(tmpbuf) - 1 ? sizeof(tmpbuf) - 1 : count;
350 strncpy(tmpbuf, buf, len);
351 tmpbuf[len] = '\0';
352 if (sscanf(tmpbuf, "%d", &debug_level) != 1)
353 return -EINVAL;
354 if (debug_level < 0)
355 debug_level = 0;
356 h = shost_to_hba(shost);
357 h->raid_offload_debug = debug_level;
358 dev_warn(&h->pdev->dev, "hpsa: Set raid_offload_debug level = %d\n",
359 h->raid_offload_debug);
360 return count;
361}
362
Stephen M. Cameronedd16362009-12-08 14:09:11 -0800363static ssize_t host_store_rescan(struct device *dev,
364 struct device_attribute *attr,
365 const char *buf, size_t count)
366{
367 struct ctlr_info *h;
368 struct Scsi_Host *shost = class_to_shost(dev);
Stephen M. Camerona23513e2010-02-04 08:43:11 -0600369 h = shost_to_hba(shost);
Mike Miller31468402010-02-25 14:03:12 -0600370 hpsa_scan_start(h->scsi_host);
Stephen M. Cameronedd16362009-12-08 14:09:11 -0800371 return count;
372}
373
Stephen M. Camerond28ce022010-05-27 15:14:34 -0500374static ssize_t host_show_firmware_revision(struct device *dev,
375 struct device_attribute *attr, char *buf)
376{
377 struct ctlr_info *h;
378 struct Scsi_Host *shost = class_to_shost(dev);
379 unsigned char *fwrev;
380
381 h = shost_to_hba(shost);
382 if (!h->hba_inquiry_data)
383 return 0;
384 fwrev = &h->hba_inquiry_data[32];
385 return snprintf(buf, 20, "%c%c%c%c\n",
386 fwrev[0], fwrev[1], fwrev[2], fwrev[3]);
387}
388
Stephen M. Cameron94a13642011-01-06 14:48:39 -0600389static ssize_t host_show_commands_outstanding(struct device *dev,
390 struct device_attribute *attr, char *buf)
391{
392 struct Scsi_Host *shost = class_to_shost(dev);
393 struct ctlr_info *h = shost_to_hba(shost);
394
395 return snprintf(buf, 20, "%d\n", h->commands_outstanding);
396}
397
Stephen M. Cameron745a7a22011-02-15 15:32:58 -0600398static ssize_t host_show_transport_mode(struct device *dev,
399 struct device_attribute *attr, char *buf)
400{
401 struct ctlr_info *h;
402 struct Scsi_Host *shost = class_to_shost(dev);
403
404 h = shost_to_hba(shost);
405 return snprintf(buf, 20, "%s\n",
Stephen M. Cameron960a30e2011-02-15 15:33:03 -0600406 h->transMethod & CFGTBL_Trans_Performant ?
Stephen M. Cameron745a7a22011-02-15 15:32:58 -0600407 "performant" : "simple");
408}
409
Scott Teelda0697b2014-02-18 13:57:00 -0600410static ssize_t host_show_hp_ssd_smart_path_status(struct device *dev,
411 struct device_attribute *attr, char *buf)
412{
413 struct ctlr_info *h;
414 struct Scsi_Host *shost = class_to_shost(dev);
415
416 h = shost_to_hba(shost);
417 return snprintf(buf, 30, "HP SSD Smart Path %s\n",
418 (h->acciopath_status == 1) ? "enabled" : "disabled");
419}
420
Stephen M. Cameron46380782011-05-03 15:00:01 -0500421/* List of controllers which cannot be hard reset on kexec with reset_devices */
Stephen M. Cameron941b1cd2011-03-09 17:00:06 -0600422static u32 unresettable_controller[] = {
423 0x324a103C, /* Smart Array P712m */
424 0x324b103C, /* SmartArray P711m */
425 0x3223103C, /* Smart Array P800 */
426 0x3234103C, /* Smart Array P400 */
427 0x3235103C, /* Smart Array P400i */
428 0x3211103C, /* Smart Array E200i */
429 0x3212103C, /* Smart Array E200 */
430 0x3213103C, /* Smart Array E200i */
431 0x3214103C, /* Smart Array E200i */
432 0x3215103C, /* Smart Array E200i */
433 0x3237103C, /* Smart Array E500 */
434 0x323D103C, /* Smart Array P700m */
Tomas Henzl7af0abb2011-11-28 15:39:55 +0100435 0x40800E11, /* Smart Array 5i */
Stephen M. Cameron941b1cd2011-03-09 17:00:06 -0600436 0x409C0E11, /* Smart Array 6400 */
437 0x409D0E11, /* Smart Array 6400 EM */
Tomas Henzl5a4f9342012-02-14 18:07:59 +0100438 0x40700E11, /* Smart Array 5300 */
439 0x40820E11, /* Smart Array 532 */
440 0x40830E11, /* Smart Array 5312 */
441 0x409A0E11, /* Smart Array 641 */
442 0x409B0E11, /* Smart Array 642 */
443 0x40910E11, /* Smart Array 6i */
Stephen M. Cameron941b1cd2011-03-09 17:00:06 -0600444};
445
Stephen M. Cameron46380782011-05-03 15:00:01 -0500446/* List of controllers which cannot even be soft reset */
447static u32 soft_unresettable_controller[] = {
Tomas Henzl7af0abb2011-11-28 15:39:55 +0100448 0x40800E11, /* Smart Array 5i */
Tomas Henzl5a4f9342012-02-14 18:07:59 +0100449 0x40700E11, /* Smart Array 5300 */
450 0x40820E11, /* Smart Array 532 */
451 0x40830E11, /* Smart Array 5312 */
452 0x409A0E11, /* Smart Array 641 */
453 0x409B0E11, /* Smart Array 642 */
454 0x40910E11, /* Smart Array 6i */
Stephen M. Cameron46380782011-05-03 15:00:01 -0500455 /* Exclude 640x boards. These are two pci devices in one slot
456 * which share a battery backed cache module. One controls the
457 * cache, the other accesses the cache through the one that controls
458 * it. If we reset the one controlling the cache, the other will
459 * likely not be happy. Just forbid resetting this conjoined mess.
460 * The 640x isn't really supported by hpsa anyway.
461 */
462 0x409C0E11, /* Smart Array 6400 */
463 0x409D0E11, /* Smart Array 6400 EM */
464};
465
466static int ctlr_is_hard_resettable(u32 board_id)
Stephen M. Cameron941b1cd2011-03-09 17:00:06 -0600467{
468 int i;
469
470 for (i = 0; i < ARRAY_SIZE(unresettable_controller); i++)
Stephen M. Cameron46380782011-05-03 15:00:01 -0500471 if (unresettable_controller[i] == board_id)
Stephen M. Cameron941b1cd2011-03-09 17:00:06 -0600472 return 0;
473 return 1;
474}
475
Stephen M. Cameron46380782011-05-03 15:00:01 -0500476static int ctlr_is_soft_resettable(u32 board_id)
477{
478 int i;
479
480 for (i = 0; i < ARRAY_SIZE(soft_unresettable_controller); i++)
481 if (soft_unresettable_controller[i] == board_id)
482 return 0;
483 return 1;
484}
485
486static int ctlr_is_resettable(u32 board_id)
487{
488 return ctlr_is_hard_resettable(board_id) ||
489 ctlr_is_soft_resettable(board_id);
490}
491
Stephen M. Cameron941b1cd2011-03-09 17:00:06 -0600492static ssize_t host_show_resettable(struct device *dev,
493 struct device_attribute *attr, char *buf)
494{
495 struct ctlr_info *h;
496 struct Scsi_Host *shost = class_to_shost(dev);
497
498 h = shost_to_hba(shost);
Stephen M. Cameron46380782011-05-03 15:00:01 -0500499 return snprintf(buf, 20, "%d\n", ctlr_is_resettable(h->board_id));
Stephen M. Cameron941b1cd2011-03-09 17:00:06 -0600500}
501
Stephen M. Cameronedd16362009-12-08 14:09:11 -0800502static inline int is_logical_dev_addr_mode(unsigned char scsi3addr[])
503{
504 return (scsi3addr[3] & 0xC0) == 0x40;
505}
506
507static const char *raid_label[] = { "0", "4", "1(1+0)", "5", "5+1", "ADG",
Mike Millerd82357e2012-05-01 11:43:32 -0500508 "1(ADM)", "UNKNOWN"
Stephen M. Cameronedd16362009-12-08 14:09:11 -0800509};
Scott Teel6b80b182014-02-18 13:56:55 -0600510#define HPSA_RAID_0 0
511#define HPSA_RAID_4 1
512#define HPSA_RAID_1 2 /* also used for RAID 10 */
513#define HPSA_RAID_5 3 /* also used for RAID 50 */
514#define HPSA_RAID_51 4
515#define HPSA_RAID_6 5 /* also used for RAID 60 */
516#define HPSA_RAID_ADM 6 /* also used for RAID 1+0 ADM */
Stephen M. Cameronedd16362009-12-08 14:09:11 -0800517#define RAID_UNKNOWN (ARRAY_SIZE(raid_label) - 1)
518
519static ssize_t raid_level_show(struct device *dev,
520 struct device_attribute *attr, char *buf)
521{
522 ssize_t l = 0;
Stephen M. Cameron82a72c02010-02-04 08:41:38 -0600523 unsigned char rlevel;
Stephen M. Cameronedd16362009-12-08 14:09:11 -0800524 struct ctlr_info *h;
525 struct scsi_device *sdev;
526 struct hpsa_scsi_dev_t *hdev;
527 unsigned long flags;
528
529 sdev = to_scsi_device(dev);
530 h = sdev_to_hba(sdev);
531 spin_lock_irqsave(&h->lock, flags);
532 hdev = sdev->hostdata;
533 if (!hdev) {
534 spin_unlock_irqrestore(&h->lock, flags);
535 return -ENODEV;
536 }
537
538 /* Is this even a logical drive? */
539 if (!is_logical_dev_addr_mode(hdev->scsi3addr)) {
540 spin_unlock_irqrestore(&h->lock, flags);
541 l = snprintf(buf, PAGE_SIZE, "N/A\n");
542 return l;
543 }
544
545 rlevel = hdev->raid_level;
546 spin_unlock_irqrestore(&h->lock, flags);
Stephen M. Cameron82a72c02010-02-04 08:41:38 -0600547 if (rlevel > RAID_UNKNOWN)
Stephen M. Cameronedd16362009-12-08 14:09:11 -0800548 rlevel = RAID_UNKNOWN;
549 l = snprintf(buf, PAGE_SIZE, "RAID %s\n", raid_label[rlevel]);
550 return l;
551}
552
553static ssize_t lunid_show(struct device *dev,
554 struct device_attribute *attr, char *buf)
555{
556 struct ctlr_info *h;
557 struct scsi_device *sdev;
558 struct hpsa_scsi_dev_t *hdev;
559 unsigned long flags;
560 unsigned char lunid[8];
561
562 sdev = to_scsi_device(dev);
563 h = sdev_to_hba(sdev);
564 spin_lock_irqsave(&h->lock, flags);
565 hdev = sdev->hostdata;
566 if (!hdev) {
567 spin_unlock_irqrestore(&h->lock, flags);
568 return -ENODEV;
569 }
570 memcpy(lunid, hdev->scsi3addr, sizeof(lunid));
571 spin_unlock_irqrestore(&h->lock, flags);
572 return snprintf(buf, 20, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
573 lunid[0], lunid[1], lunid[2], lunid[3],
574 lunid[4], lunid[5], lunid[6], lunid[7]);
575}
576
577static ssize_t unique_id_show(struct device *dev,
578 struct device_attribute *attr, char *buf)
579{
580 struct ctlr_info *h;
581 struct scsi_device *sdev;
582 struct hpsa_scsi_dev_t *hdev;
583 unsigned long flags;
584 unsigned char sn[16];
585
586 sdev = to_scsi_device(dev);
587 h = sdev_to_hba(sdev);
588 spin_lock_irqsave(&h->lock, flags);
589 hdev = sdev->hostdata;
590 if (!hdev) {
591 spin_unlock_irqrestore(&h->lock, flags);
592 return -ENODEV;
593 }
594 memcpy(sn, hdev->device_id, sizeof(sn));
595 spin_unlock_irqrestore(&h->lock, flags);
596 return snprintf(buf, 16 * 2 + 2,
597 "%02X%02X%02X%02X%02X%02X%02X%02X"
598 "%02X%02X%02X%02X%02X%02X%02X%02X\n",
599 sn[0], sn[1], sn[2], sn[3],
600 sn[4], sn[5], sn[6], sn[7],
601 sn[8], sn[9], sn[10], sn[11],
602 sn[12], sn[13], sn[14], sn[15]);
603}
604
Scott Teelc1988682014-02-18 13:55:54 -0600605static ssize_t host_show_hp_ssd_smart_path_enabled(struct device *dev,
606 struct device_attribute *attr, char *buf)
607{
608 struct ctlr_info *h;
609 struct scsi_device *sdev;
610 struct hpsa_scsi_dev_t *hdev;
611 unsigned long flags;
612 int offload_enabled;
613
614 sdev = to_scsi_device(dev);
615 h = sdev_to_hba(sdev);
616 spin_lock_irqsave(&h->lock, flags);
617 hdev = sdev->hostdata;
618 if (!hdev) {
619 spin_unlock_irqrestore(&h->lock, flags);
620 return -ENODEV;
621 }
622 offload_enabled = hdev->offload_enabled;
623 spin_unlock_irqrestore(&h->lock, flags);
624 return snprintf(buf, 20, "%d\n", offload_enabled);
625}
626
Stephen M. Cameron3f5eac32011-03-09 17:00:01 -0600627static DEVICE_ATTR(raid_level, S_IRUGO, raid_level_show, NULL);
628static DEVICE_ATTR(lunid, S_IRUGO, lunid_show, NULL);
629static DEVICE_ATTR(unique_id, S_IRUGO, unique_id_show, NULL);
630static DEVICE_ATTR(rescan, S_IWUSR, NULL, host_store_rescan);
Scott Teelc1988682014-02-18 13:55:54 -0600631static DEVICE_ATTR(hp_ssd_smart_path_enabled, S_IRUGO,
632 host_show_hp_ssd_smart_path_enabled, NULL);
Scott Teelda0697b2014-02-18 13:57:00 -0600633static DEVICE_ATTR(hp_ssd_smart_path_status, S_IWUSR|S_IRUGO|S_IROTH,
634 host_show_hp_ssd_smart_path_status,
635 host_store_hp_ssd_smart_path_status);
Stephen M. Cameron2ba8bfc2014-02-18 13:57:52 -0600636static DEVICE_ATTR(raid_offload_debug, S_IWUSR, NULL,
637 host_store_raid_offload_debug);
Stephen M. Cameron3f5eac32011-03-09 17:00:01 -0600638static DEVICE_ATTR(firmware_revision, S_IRUGO,
639 host_show_firmware_revision, NULL);
640static DEVICE_ATTR(commands_outstanding, S_IRUGO,
641 host_show_commands_outstanding, NULL);
642static DEVICE_ATTR(transport_mode, S_IRUGO,
643 host_show_transport_mode, NULL);
Stephen M. Cameron941b1cd2011-03-09 17:00:06 -0600644static DEVICE_ATTR(resettable, S_IRUGO,
645 host_show_resettable, NULL);
Stephen M. Cameron3f5eac32011-03-09 17:00:01 -0600646
647static struct device_attribute *hpsa_sdev_attrs[] = {
648 &dev_attr_raid_level,
649 &dev_attr_lunid,
650 &dev_attr_unique_id,
Scott Teelc1988682014-02-18 13:55:54 -0600651 &dev_attr_hp_ssd_smart_path_enabled,
Stephen M. Cameron3f5eac32011-03-09 17:00:01 -0600652 NULL,
653};
654
655static struct device_attribute *hpsa_shost_attrs[] = {
656 &dev_attr_rescan,
657 &dev_attr_firmware_revision,
658 &dev_attr_commands_outstanding,
659 &dev_attr_transport_mode,
Stephen M. Cameron941b1cd2011-03-09 17:00:06 -0600660 &dev_attr_resettable,
Scott Teelda0697b2014-02-18 13:57:00 -0600661 &dev_attr_hp_ssd_smart_path_status,
Stephen M. Cameron2ba8bfc2014-02-18 13:57:52 -0600662 &dev_attr_raid_offload_debug,
Stephen M. Cameron3f5eac32011-03-09 17:00:01 -0600663 NULL,
664};
665
666static struct scsi_host_template hpsa_driver_template = {
667 .module = THIS_MODULE,
Stephen M. Cameronf79cfec2012-01-19 14:00:59 -0600668 .name = HPSA,
669 .proc_name = HPSA,
Stephen M. Cameron3f5eac32011-03-09 17:00:01 -0600670 .queuecommand = hpsa_scsi_queue_command,
671 .scan_start = hpsa_scan_start,
672 .scan_finished = hpsa_scan_finished,
673 .change_queue_depth = hpsa_change_queue_depth,
674 .this_id = -1,
675 .use_clustering = ENABLE_CLUSTERING,
Stephen M. Cameron75167d22012-05-01 11:42:51 -0500676 .eh_abort_handler = hpsa_eh_abort_handler,
Stephen M. Cameron3f5eac32011-03-09 17:00:01 -0600677 .eh_device_reset_handler = hpsa_eh_device_reset_handler,
678 .ioctl = hpsa_ioctl,
679 .slave_alloc = hpsa_slave_alloc,
680 .slave_destroy = hpsa_slave_destroy,
681#ifdef CONFIG_COMPAT
682 .compat_ioctl = hpsa_compat_ioctl,
683#endif
684 .sdev_attrs = hpsa_sdev_attrs,
685 .shost_attrs = hpsa_shost_attrs,
Stephen M. Cameronc0d6a4d2011-10-26 16:20:53 -0500686 .max_sectors = 8192,
Martin K. Petersen54b2b502013-10-23 06:25:40 -0400687 .no_write_same = 1,
Stephen M. Cameron3f5eac32011-03-09 17:00:01 -0600688};
689
690
691/* Enqueuing and dequeuing functions for cmdlists. */
692static inline void addQ(struct list_head *list, struct CommandList *c)
693{
694 list_add_tail(&c->list, list);
695}
696
Matt Gates254f7962012-05-01 11:43:06 -0500697static inline u32 next_command(struct ctlr_info *h, u8 q)
Stephen M. Cameron3f5eac32011-03-09 17:00:01 -0600698{
699 u32 a;
Stephen M. Cameron072b0512014-05-29 10:53:07 -0500700 struct reply_queue_buffer *rq = &h->reply_queue[q];
Matt Gatese16a33a2012-05-01 11:43:11 -0500701 unsigned long flags;
Stephen M. Cameron3f5eac32011-03-09 17:00:01 -0600702
Matt Gatese1f7de02014-02-18 13:55:17 -0600703 if (h->transMethod & CFGTBL_Trans_io_accel1)
704 return h->access.command_completed(h, q);
705
Stephen M. Cameron3f5eac32011-03-09 17:00:01 -0600706 if (unlikely(!(h->transMethod & CFGTBL_Trans_Performant)))
Matt Gates254f7962012-05-01 11:43:06 -0500707 return h->access.command_completed(h, q);
Stephen M. Cameron3f5eac32011-03-09 17:00:01 -0600708
Matt Gates254f7962012-05-01 11:43:06 -0500709 if ((rq->head[rq->current_entry] & 1) == rq->wraparound) {
710 a = rq->head[rq->current_entry];
711 rq->current_entry++;
Matt Gatese16a33a2012-05-01 11:43:11 -0500712 spin_lock_irqsave(&h->lock, flags);
Stephen M. Cameron3f5eac32011-03-09 17:00:01 -0600713 h->commands_outstanding--;
Matt Gatese16a33a2012-05-01 11:43:11 -0500714 spin_unlock_irqrestore(&h->lock, flags);
Stephen M. Cameron3f5eac32011-03-09 17:00:01 -0600715 } else {
716 a = FIFO_EMPTY;
717 }
718 /* Check for wraparound */
Matt Gates254f7962012-05-01 11:43:06 -0500719 if (rq->current_entry == h->max_commands) {
720 rq->current_entry = 0;
721 rq->wraparound ^= 1;
Stephen M. Cameron3f5eac32011-03-09 17:00:01 -0600722 }
723 return a;
724}
725
Scott Teelc3497752014-02-18 13:56:34 -0600726/*
727 * There are some special bits in the bus address of the
728 * command that we have to set for the controller to know
729 * how to process the command:
730 *
731 * Normal performant mode:
732 * bit 0: 1 means performant mode, 0 means simple mode.
733 * bits 1-3 = block fetch table entry
734 * bits 4-6 = command type (== 0)
735 *
736 * ioaccel1 mode:
737 * bit 0 = "performant mode" bit.
738 * bits 1-3 = block fetch table entry
739 * bits 4-6 = command type (== 110)
740 * (command type is needed because ioaccel1 mode
741 * commands are submitted through the same register as normal
742 * mode commands, so this is how the controller knows whether
743 * the command is normal mode or ioaccel1 mode.)
744 *
745 * ioaccel2 mode:
746 * bit 0 = "performant mode" bit.
747 * bits 1-4 = block fetch table entry (note extra bit)
748 * bits 4-6 = not needed, because ioaccel2 mode has
749 * a separate special register for submitting commands.
750 */
751
Stephen M. Cameron3f5eac32011-03-09 17:00:01 -0600752/* set_performant_mode: Modify the tag for cciss performant
753 * set bit 0 for pull model, bits 3-1 for block fetch
754 * register number
755 */
756static void set_performant_mode(struct ctlr_info *h, struct CommandList *c)
757{
Matt Gates254f7962012-05-01 11:43:06 -0500758 if (likely(h->transMethod & CFGTBL_Trans_Performant)) {
Stephen M. Cameron3f5eac32011-03-09 17:00:01 -0600759 c->busaddr |= 1 | (h->blockFetchTable[c->Header.SGList] << 1);
Hannes Reineckeeee0f032014-01-15 13:30:53 +0100760 if (likely(h->msix_vector > 0))
Matt Gates254f7962012-05-01 11:43:06 -0500761 c->Header.ReplyQueue =
John Kacur804a5cb2013-07-26 16:06:18 +0200762 raw_smp_processor_id() % h->nreply_queues;
Matt Gates254f7962012-05-01 11:43:06 -0500763 }
Stephen M. Cameron3f5eac32011-03-09 17:00:01 -0600764}
765
Scott Teelc3497752014-02-18 13:56:34 -0600766static void set_ioaccel1_performant_mode(struct ctlr_info *h,
767 struct CommandList *c)
768{
769 struct io_accel1_cmd *cp = &h->ioaccel_cmd_pool[c->cmdindex];
770
771 /* Tell the controller to post the reply to the queue for this
772 * processor. This seems to give the best I/O throughput.
773 */
774 cp->ReplyQueue = smp_processor_id() % h->nreply_queues;
775 /* Set the bits in the address sent down to include:
776 * - performant mode bit (bit 0)
777 * - pull count (bits 1-3)
778 * - command type (bits 4-6)
779 */
780 c->busaddr |= 1 | (h->ioaccel1_blockFetchTable[c->Header.SGList] << 1) |
781 IOACCEL1_BUSADDR_CMDTYPE;
782}
783
784static void set_ioaccel2_performant_mode(struct ctlr_info *h,
785 struct CommandList *c)
786{
787 struct io_accel2_cmd *cp = &h->ioaccel2_cmd_pool[c->cmdindex];
788
789 /* Tell the controller to post the reply to the queue for this
790 * processor. This seems to give the best I/O throughput.
791 */
792 cp->reply_queue = smp_processor_id() % h->nreply_queues;
793 /* Set the bits in the address sent down to include:
794 * - performant mode bit not used in ioaccel mode 2
795 * - pull count (bits 0-3)
796 * - command type isn't needed for ioaccel2
797 */
798 c->busaddr |= (h->ioaccel2_blockFetchTable[cp->sg_count]);
799}
800
Stephen M. Camerone85c5972012-05-01 11:43:42 -0500801static int is_firmware_flash_cmd(u8 *cdb)
802{
803 return cdb[0] == BMIC_WRITE && cdb[6] == BMIC_FLASH_FIRMWARE;
804}
805
806/*
807 * During firmware flash, the heartbeat register may not update as frequently
808 * as it should. So we dial down lockup detection during firmware flash. and
809 * dial it back up when firmware flash completes.
810 */
811#define HEARTBEAT_SAMPLE_INTERVAL_DURING_FLASH (240 * HZ)
812#define HEARTBEAT_SAMPLE_INTERVAL (30 * HZ)
813static void dial_down_lockup_detection_during_fw_flash(struct ctlr_info *h,
814 struct CommandList *c)
815{
816 if (!is_firmware_flash_cmd(c->Request.CDB))
817 return;
818 atomic_inc(&h->firmware_flash_in_progress);
819 h->heartbeat_sample_interval = HEARTBEAT_SAMPLE_INTERVAL_DURING_FLASH;
820}
821
822static void dial_up_lockup_detection_on_fw_flash_complete(struct ctlr_info *h,
823 struct CommandList *c)
824{
825 if (is_firmware_flash_cmd(c->Request.CDB) &&
826 atomic_dec_and_test(&h->firmware_flash_in_progress))
827 h->heartbeat_sample_interval = HEARTBEAT_SAMPLE_INTERVAL;
828}
829
Stephen M. Cameron3f5eac32011-03-09 17:00:01 -0600830static void enqueue_cmd_and_start_io(struct ctlr_info *h,
831 struct CommandList *c)
832{
833 unsigned long flags;
834
Scott Teelc3497752014-02-18 13:56:34 -0600835 switch (c->cmd_type) {
836 case CMD_IOACCEL1:
837 set_ioaccel1_performant_mode(h, c);
838 break;
839 case CMD_IOACCEL2:
840 set_ioaccel2_performant_mode(h, c);
841 break;
842 default:
843 set_performant_mode(h, c);
844 }
Stephen M. Camerone85c5972012-05-01 11:43:42 -0500845 dial_down_lockup_detection_during_fw_flash(h, c);
Stephen M. Cameron3f5eac32011-03-09 17:00:01 -0600846 spin_lock_irqsave(&h->lock, flags);
847 addQ(&h->reqQ, c);
848 h->Qdepth++;
Stephen M. Cameron0b570752014-05-29 10:53:28 -0500849 start_io(h, &flags);
Stephen M. Cameron3f5eac32011-03-09 17:00:01 -0600850 spin_unlock_irqrestore(&h->lock, flags);
851}
852
853static inline void removeQ(struct CommandList *c)
854{
855 if (WARN_ON(list_empty(&c->list)))
856 return;
857 list_del_init(&c->list);
858}
859
860static inline int is_hba_lunid(unsigned char scsi3addr[])
861{
862 return memcmp(scsi3addr, RAID_CTLR_LUNID, 8) == 0;
863}
864
865static inline int is_scsi_rev_5(struct ctlr_info *h)
866{
867 if (!h->hba_inquiry_data)
868 return 0;
869 if ((h->hba_inquiry_data[2] & 0x07) == 5)
870 return 1;
871 return 0;
872}
873
Stephen M. Cameronedd16362009-12-08 14:09:11 -0800874static int hpsa_find_target_lun(struct ctlr_info *h,
875 unsigned char scsi3addr[], int bus, int *target, int *lun)
876{
877 /* finds an unused bus, target, lun for a new physical device
878 * assumes h->devlock is held
879 */
880 int i, found = 0;
Scott Teelcfe5bad2011-10-26 16:21:07 -0500881 DECLARE_BITMAP(lun_taken, HPSA_MAX_DEVICES);
Stephen M. Cameronedd16362009-12-08 14:09:11 -0800882
Akinobu Mita263d9402012-01-21 00:15:27 +0900883 bitmap_zero(lun_taken, HPSA_MAX_DEVICES);
Stephen M. Cameronedd16362009-12-08 14:09:11 -0800884
885 for (i = 0; i < h->ndevices; i++) {
886 if (h->dev[i]->bus == bus && h->dev[i]->target != -1)
Akinobu Mita263d9402012-01-21 00:15:27 +0900887 __set_bit(h->dev[i]->target, lun_taken);
Stephen M. Cameronedd16362009-12-08 14:09:11 -0800888 }
889
Akinobu Mita263d9402012-01-21 00:15:27 +0900890 i = find_first_zero_bit(lun_taken, HPSA_MAX_DEVICES);
891 if (i < HPSA_MAX_DEVICES) {
892 /* *bus = 1; */
893 *target = i;
894 *lun = 0;
895 found = 1;
Stephen M. Cameronedd16362009-12-08 14:09:11 -0800896 }
897 return !found;
898}
899
900/* Add an entry into h->dev[] array. */
901static int hpsa_scsi_add_entry(struct ctlr_info *h, int hostno,
902 struct hpsa_scsi_dev_t *device,
903 struct hpsa_scsi_dev_t *added[], int *nadded)
904{
905 /* assumes h->devlock is held */
906 int n = h->ndevices;
907 int i;
908 unsigned char addr1[8], addr2[8];
909 struct hpsa_scsi_dev_t *sd;
910
Scott Teelcfe5bad2011-10-26 16:21:07 -0500911 if (n >= HPSA_MAX_DEVICES) {
Stephen M. Cameronedd16362009-12-08 14:09:11 -0800912 dev_err(&h->pdev->dev, "too many devices, some will be "
913 "inaccessible.\n");
914 return -1;
915 }
916
917 /* physical devices do not have lun or target assigned until now. */
918 if (device->lun != -1)
919 /* Logical device, lun is already assigned. */
920 goto lun_assigned;
921
922 /* If this device a non-zero lun of a multi-lun device
923 * byte 4 of the 8-byte LUN addr will contain the logical
924 * unit no, zero otherise.
925 */
926 if (device->scsi3addr[4] == 0) {
927 /* This is not a non-zero lun of a multi-lun device */
928 if (hpsa_find_target_lun(h, device->scsi3addr,
929 device->bus, &device->target, &device->lun) != 0)
930 return -1;
931 goto lun_assigned;
932 }
933
934 /* This is a non-zero lun of a multi-lun device.
935 * Search through our list and find the device which
936 * has the same 8 byte LUN address, excepting byte 4.
937 * Assign the same bus and target for this new LUN.
938 * Use the logical unit number from the firmware.
939 */
940 memcpy(addr1, device->scsi3addr, 8);
941 addr1[4] = 0;
942 for (i = 0; i < n; i++) {
943 sd = h->dev[i];
944 memcpy(addr2, sd->scsi3addr, 8);
945 addr2[4] = 0;
946 /* differ only in byte 4? */
947 if (memcmp(addr1, addr2, 8) == 0) {
948 device->bus = sd->bus;
949 device->target = sd->target;
950 device->lun = device->scsi3addr[4];
951 break;
952 }
953 }
954 if (device->lun == -1) {
955 dev_warn(&h->pdev->dev, "physical device with no LUN=0,"
956 " suspect firmware bug or unsupported hardware "
957 "configuration.\n");
958 return -1;
959 }
960
961lun_assigned:
962
963 h->dev[n] = device;
964 h->ndevices++;
965 added[*nadded] = device;
966 (*nadded)++;
967
968 /* initially, (before registering with scsi layer) we don't
969 * know our hostno and we don't want to print anything first
970 * time anyway (the scsi layer's inquiries will show that info)
971 */
972 /* if (hostno != -1) */
973 dev_info(&h->pdev->dev, "%s device c%db%dt%dl%d added.\n",
974 scsi_device_type(device->devtype), hostno,
975 device->bus, device->target, device->lun);
976 return 0;
977}
978
Scott Teelbd9244f2012-01-19 14:01:30 -0600979/* Update an entry in h->dev[] array. */
980static void hpsa_scsi_update_entry(struct ctlr_info *h, int hostno,
981 int entry, struct hpsa_scsi_dev_t *new_entry)
982{
983 /* assumes h->devlock is held */
984 BUG_ON(entry < 0 || entry >= HPSA_MAX_DEVICES);
985
986 /* Raid level changed. */
987 h->dev[entry]->raid_level = new_entry->raid_level;
Stephen M. Cameron250fb122014-02-18 13:55:38 -0600988
989 /* Raid offload parameters changed. */
990 h->dev[entry]->offload_config = new_entry->offload_config;
991 h->dev[entry]->offload_enabled = new_entry->offload_enabled;
Stephen M. Cameron9fb0de22014-02-18 13:56:50 -0600992 h->dev[entry]->ioaccel_handle = new_entry->ioaccel_handle;
993 h->dev[entry]->offload_to_mirror = new_entry->offload_to_mirror;
994 h->dev[entry]->raid_map = new_entry->raid_map;
Stephen M. Cameron250fb122014-02-18 13:55:38 -0600995
Scott Teelbd9244f2012-01-19 14:01:30 -0600996 dev_info(&h->pdev->dev, "%s device c%db%dt%dl%d updated.\n",
997 scsi_device_type(new_entry->devtype), hostno, new_entry->bus,
998 new_entry->target, new_entry->lun);
999}
1000
Stephen M. Cameron2a8ccf32010-02-04 08:43:41 -06001001/* Replace an entry from h->dev[] array. */
1002static void hpsa_scsi_replace_entry(struct ctlr_info *h, int hostno,
1003 int entry, struct hpsa_scsi_dev_t *new_entry,
1004 struct hpsa_scsi_dev_t *added[], int *nadded,
1005 struct hpsa_scsi_dev_t *removed[], int *nremoved)
1006{
1007 /* assumes h->devlock is held */
Scott Teelcfe5bad2011-10-26 16:21:07 -05001008 BUG_ON(entry < 0 || entry >= HPSA_MAX_DEVICES);
Stephen M. Cameron2a8ccf32010-02-04 08:43:41 -06001009 removed[*nremoved] = h->dev[entry];
1010 (*nremoved)++;
Stephen M. Cameron01350d02011-08-09 08:18:01 -05001011
1012 /*
1013 * New physical devices won't have target/lun assigned yet
1014 * so we need to preserve the values in the slot we are replacing.
1015 */
1016 if (new_entry->target == -1) {
1017 new_entry->target = h->dev[entry]->target;
1018 new_entry->lun = h->dev[entry]->lun;
1019 }
1020
Stephen M. Cameron2a8ccf32010-02-04 08:43:41 -06001021 h->dev[entry] = new_entry;
1022 added[*nadded] = new_entry;
1023 (*nadded)++;
1024 dev_info(&h->pdev->dev, "%s device c%db%dt%dl%d changed.\n",
1025 scsi_device_type(new_entry->devtype), hostno, new_entry->bus,
1026 new_entry->target, new_entry->lun);
1027}
1028
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001029/* Remove an entry from h->dev[] array. */
1030static void hpsa_scsi_remove_entry(struct ctlr_info *h, int hostno, int entry,
1031 struct hpsa_scsi_dev_t *removed[], int *nremoved)
1032{
1033 /* assumes h->devlock is held */
1034 int i;
1035 struct hpsa_scsi_dev_t *sd;
1036
Scott Teelcfe5bad2011-10-26 16:21:07 -05001037 BUG_ON(entry < 0 || entry >= HPSA_MAX_DEVICES);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001038
1039 sd = h->dev[entry];
1040 removed[*nremoved] = h->dev[entry];
1041 (*nremoved)++;
1042
1043 for (i = entry; i < h->ndevices-1; i++)
1044 h->dev[i] = h->dev[i+1];
1045 h->ndevices--;
1046 dev_info(&h->pdev->dev, "%s device c%db%dt%dl%d removed.\n",
1047 scsi_device_type(sd->devtype), hostno, sd->bus, sd->target,
1048 sd->lun);
1049}
1050
1051#define SCSI3ADDR_EQ(a, b) ( \
1052 (a)[7] == (b)[7] && \
1053 (a)[6] == (b)[6] && \
1054 (a)[5] == (b)[5] && \
1055 (a)[4] == (b)[4] && \
1056 (a)[3] == (b)[3] && \
1057 (a)[2] == (b)[2] && \
1058 (a)[1] == (b)[1] && \
1059 (a)[0] == (b)[0])
1060
1061static void fixup_botched_add(struct ctlr_info *h,
1062 struct hpsa_scsi_dev_t *added)
1063{
1064 /* called when scsi_add_device fails in order to re-adjust
1065 * h->dev[] to match the mid layer's view.
1066 */
1067 unsigned long flags;
1068 int i, j;
1069
1070 spin_lock_irqsave(&h->lock, flags);
1071 for (i = 0; i < h->ndevices; i++) {
1072 if (h->dev[i] == added) {
1073 for (j = i; j < h->ndevices-1; j++)
1074 h->dev[j] = h->dev[j+1];
1075 h->ndevices--;
1076 break;
1077 }
1078 }
1079 spin_unlock_irqrestore(&h->lock, flags);
1080 kfree(added);
1081}
1082
1083static inline int device_is_the_same(struct hpsa_scsi_dev_t *dev1,
1084 struct hpsa_scsi_dev_t *dev2)
1085{
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001086 /* we compare everything except lun and target as these
1087 * are not yet assigned. Compare parts likely
1088 * to differ first
1089 */
1090 if (memcmp(dev1->scsi3addr, dev2->scsi3addr,
1091 sizeof(dev1->scsi3addr)) != 0)
1092 return 0;
1093 if (memcmp(dev1->device_id, dev2->device_id,
1094 sizeof(dev1->device_id)) != 0)
1095 return 0;
1096 if (memcmp(dev1->model, dev2->model, sizeof(dev1->model)) != 0)
1097 return 0;
1098 if (memcmp(dev1->vendor, dev2->vendor, sizeof(dev1->vendor)) != 0)
1099 return 0;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001100 if (dev1->devtype != dev2->devtype)
1101 return 0;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001102 if (dev1->bus != dev2->bus)
1103 return 0;
1104 return 1;
1105}
1106
Scott Teelbd9244f2012-01-19 14:01:30 -06001107static inline int device_updated(struct hpsa_scsi_dev_t *dev1,
1108 struct hpsa_scsi_dev_t *dev2)
1109{
1110 /* Device attributes that can change, but don't mean
1111 * that the device is a different device, nor that the OS
1112 * needs to be told anything about the change.
1113 */
1114 if (dev1->raid_level != dev2->raid_level)
1115 return 1;
Stephen M. Cameron250fb122014-02-18 13:55:38 -06001116 if (dev1->offload_config != dev2->offload_config)
1117 return 1;
1118 if (dev1->offload_enabled != dev2->offload_enabled)
1119 return 1;
Scott Teelbd9244f2012-01-19 14:01:30 -06001120 return 0;
1121}
1122
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001123/* Find needle in haystack. If exact match found, return DEVICE_SAME,
1124 * and return needle location in *index. If scsi3addr matches, but not
1125 * vendor, model, serial num, etc. return DEVICE_CHANGED, and return needle
Scott Teelbd9244f2012-01-19 14:01:30 -06001126 * location in *index.
1127 * In the case of a minor device attribute change, such as RAID level, just
1128 * return DEVICE_UPDATED, along with the updated device's location in index.
1129 * If needle not found, return DEVICE_NOT_FOUND.
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001130 */
1131static int hpsa_scsi_find_entry(struct hpsa_scsi_dev_t *needle,
1132 struct hpsa_scsi_dev_t *haystack[], int haystack_size,
1133 int *index)
1134{
1135 int i;
1136#define DEVICE_NOT_FOUND 0
1137#define DEVICE_CHANGED 1
1138#define DEVICE_SAME 2
Scott Teelbd9244f2012-01-19 14:01:30 -06001139#define DEVICE_UPDATED 3
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001140 for (i = 0; i < haystack_size; i++) {
Stephen M. Cameron23231042010-02-04 08:43:36 -06001141 if (haystack[i] == NULL) /* previously removed. */
1142 continue;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001143 if (SCSI3ADDR_EQ(needle->scsi3addr, haystack[i]->scsi3addr)) {
1144 *index = i;
Scott Teelbd9244f2012-01-19 14:01:30 -06001145 if (device_is_the_same(needle, haystack[i])) {
1146 if (device_updated(needle, haystack[i]))
1147 return DEVICE_UPDATED;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001148 return DEVICE_SAME;
Scott Teelbd9244f2012-01-19 14:01:30 -06001149 } else {
Stephen M. Cameron98465902014-02-21 16:25:00 -06001150 /* Keep offline devices offline */
1151 if (needle->volume_offline)
1152 return DEVICE_NOT_FOUND;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001153 return DEVICE_CHANGED;
Scott Teelbd9244f2012-01-19 14:01:30 -06001154 }
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001155 }
1156 }
1157 *index = -1;
1158 return DEVICE_NOT_FOUND;
1159}
1160
Stephen M. Cameron98465902014-02-21 16:25:00 -06001161static void hpsa_monitor_offline_device(struct ctlr_info *h,
1162 unsigned char scsi3addr[])
1163{
1164 struct offline_device_entry *device;
1165 unsigned long flags;
1166
1167 /* Check to see if device is already on the list */
1168 spin_lock_irqsave(&h->offline_device_lock, flags);
1169 list_for_each_entry(device, &h->offline_device_list, offline_list) {
1170 if (memcmp(device->scsi3addr, scsi3addr,
1171 sizeof(device->scsi3addr)) == 0) {
1172 spin_unlock_irqrestore(&h->offline_device_lock, flags);
1173 return;
1174 }
1175 }
1176 spin_unlock_irqrestore(&h->offline_device_lock, flags);
1177
1178 /* Device is not on the list, add it. */
1179 device = kmalloc(sizeof(*device), GFP_KERNEL);
1180 if (!device) {
1181 dev_warn(&h->pdev->dev, "out of memory in %s\n", __func__);
1182 return;
1183 }
1184 memcpy(device->scsi3addr, scsi3addr, sizeof(device->scsi3addr));
1185 spin_lock_irqsave(&h->offline_device_lock, flags);
1186 list_add_tail(&device->offline_list, &h->offline_device_list);
1187 spin_unlock_irqrestore(&h->offline_device_lock, flags);
1188}
1189
1190/* Print a message explaining various offline volume states */
1191static void hpsa_show_volume_status(struct ctlr_info *h,
1192 struct hpsa_scsi_dev_t *sd)
1193{
1194 if (sd->volume_offline == HPSA_VPD_LV_STATUS_UNSUPPORTED)
1195 dev_info(&h->pdev->dev,
1196 "C%d:B%d:T%d:L%d Volume status is not available through vital product data pages.\n",
1197 h->scsi_host->host_no,
1198 sd->bus, sd->target, sd->lun);
1199 switch (sd->volume_offline) {
1200 case HPSA_LV_OK:
1201 break;
1202 case HPSA_LV_UNDERGOING_ERASE:
1203 dev_info(&h->pdev->dev,
1204 "C%d:B%d:T%d:L%d Volume is undergoing background erase process.\n",
1205 h->scsi_host->host_no,
1206 sd->bus, sd->target, sd->lun);
1207 break;
1208 case HPSA_LV_UNDERGOING_RPI:
1209 dev_info(&h->pdev->dev,
1210 "C%d:B%d:T%d:L%d Volume is undergoing rapid parity initialization process.\n",
1211 h->scsi_host->host_no,
1212 sd->bus, sd->target, sd->lun);
1213 break;
1214 case HPSA_LV_PENDING_RPI:
1215 dev_info(&h->pdev->dev,
1216 "C%d:B%d:T%d:L%d Volume is queued for rapid parity initialization process.\n",
1217 h->scsi_host->host_no,
1218 sd->bus, sd->target, sd->lun);
1219 break;
1220 case HPSA_LV_ENCRYPTED_NO_KEY:
1221 dev_info(&h->pdev->dev,
1222 "C%d:B%d:T%d:L%d Volume is encrypted and cannot be accessed because key is not present.\n",
1223 h->scsi_host->host_no,
1224 sd->bus, sd->target, sd->lun);
1225 break;
1226 case HPSA_LV_PLAINTEXT_IN_ENCRYPT_ONLY_CONTROLLER:
1227 dev_info(&h->pdev->dev,
1228 "C%d:B%d:T%d:L%d Volume is not encrypted and cannot be accessed because controller is in encryption-only mode.\n",
1229 h->scsi_host->host_no,
1230 sd->bus, sd->target, sd->lun);
1231 break;
1232 case HPSA_LV_UNDERGOING_ENCRYPTION:
1233 dev_info(&h->pdev->dev,
1234 "C%d:B%d:T%d:L%d Volume is undergoing encryption process.\n",
1235 h->scsi_host->host_no,
1236 sd->bus, sd->target, sd->lun);
1237 break;
1238 case HPSA_LV_UNDERGOING_ENCRYPTION_REKEYING:
1239 dev_info(&h->pdev->dev,
1240 "C%d:B%d:T%d:L%d Volume is undergoing encryption re-keying process.\n",
1241 h->scsi_host->host_no,
1242 sd->bus, sd->target, sd->lun);
1243 break;
1244 case HPSA_LV_ENCRYPTED_IN_NON_ENCRYPTED_CONTROLLER:
1245 dev_info(&h->pdev->dev,
1246 "C%d:B%d:T%d:L%d Volume is encrypted and cannot be accessed because controller does not have encryption enabled.\n",
1247 h->scsi_host->host_no,
1248 sd->bus, sd->target, sd->lun);
1249 break;
1250 case HPSA_LV_PENDING_ENCRYPTION:
1251 dev_info(&h->pdev->dev,
1252 "C%d:B%d:T%d:L%d Volume is pending migration to encrypted state, but process has not started.\n",
1253 h->scsi_host->host_no,
1254 sd->bus, sd->target, sd->lun);
1255 break;
1256 case HPSA_LV_PENDING_ENCRYPTION_REKEYING:
1257 dev_info(&h->pdev->dev,
1258 "C%d:B%d:T%d:L%d Volume is encrypted and is pending encryption rekeying.\n",
1259 h->scsi_host->host_no,
1260 sd->bus, sd->target, sd->lun);
1261 break;
1262 }
1263}
1264
Stephen M. Cameron4967bd32010-02-04 08:41:49 -06001265static void adjust_hpsa_scsi_table(struct ctlr_info *h, int hostno,
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001266 struct hpsa_scsi_dev_t *sd[], int nsds)
1267{
1268 /* sd contains scsi3 addresses and devtypes, and inquiry
1269 * data. This function takes what's in sd to be the current
1270 * reality and updates h->dev[] to reflect that reality.
1271 */
1272 int i, entry, device_change, changes = 0;
1273 struct hpsa_scsi_dev_t *csd;
1274 unsigned long flags;
1275 struct hpsa_scsi_dev_t **added, **removed;
1276 int nadded, nremoved;
1277 struct Scsi_Host *sh = NULL;
1278
Scott Teelcfe5bad2011-10-26 16:21:07 -05001279 added = kzalloc(sizeof(*added) * HPSA_MAX_DEVICES, GFP_KERNEL);
1280 removed = kzalloc(sizeof(*removed) * HPSA_MAX_DEVICES, GFP_KERNEL);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001281
1282 if (!added || !removed) {
1283 dev_warn(&h->pdev->dev, "out of memory in "
1284 "adjust_hpsa_scsi_table\n");
1285 goto free_and_out;
1286 }
1287
1288 spin_lock_irqsave(&h->devlock, flags);
1289
1290 /* find any devices in h->dev[] that are not in
1291 * sd[] and remove them from h->dev[], and for any
1292 * devices which have changed, remove the old device
1293 * info and add the new device info.
Scott Teelbd9244f2012-01-19 14:01:30 -06001294 * If minor device attributes change, just update
1295 * the existing device structure.
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001296 */
1297 i = 0;
1298 nremoved = 0;
1299 nadded = 0;
1300 while (i < h->ndevices) {
1301 csd = h->dev[i];
1302 device_change = hpsa_scsi_find_entry(csd, sd, nsds, &entry);
1303 if (device_change == DEVICE_NOT_FOUND) {
1304 changes++;
1305 hpsa_scsi_remove_entry(h, hostno, i,
1306 removed, &nremoved);
1307 continue; /* remove ^^^, hence i not incremented */
1308 } else if (device_change == DEVICE_CHANGED) {
1309 changes++;
Stephen M. Cameron2a8ccf32010-02-04 08:43:41 -06001310 hpsa_scsi_replace_entry(h, hostno, i, sd[entry],
1311 added, &nadded, removed, &nremoved);
Stephen M. Cameronc7f172d2010-02-04 08:43:31 -06001312 /* Set it to NULL to prevent it from being freed
1313 * at the bottom of hpsa_update_scsi_devices()
1314 */
1315 sd[entry] = NULL;
Scott Teelbd9244f2012-01-19 14:01:30 -06001316 } else if (device_change == DEVICE_UPDATED) {
1317 hpsa_scsi_update_entry(h, hostno, i, sd[entry]);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001318 }
1319 i++;
1320 }
1321
1322 /* Now, make sure every device listed in sd[] is also
1323 * listed in h->dev[], adding them if they aren't found
1324 */
1325
1326 for (i = 0; i < nsds; i++) {
1327 if (!sd[i]) /* if already added above. */
1328 continue;
Stephen M. Cameron98465902014-02-21 16:25:00 -06001329
1330 /* Don't add devices which are NOT READY, FORMAT IN PROGRESS
1331 * as the SCSI mid-layer does not handle such devices well.
1332 * It relentlessly loops sending TUR at 3Hz, then READ(10)
1333 * at 160Hz, and prevents the system from coming up.
1334 */
1335 if (sd[i]->volume_offline) {
1336 hpsa_show_volume_status(h, sd[i]);
1337 dev_info(&h->pdev->dev, "c%db%dt%dl%d: temporarily offline\n",
1338 h->scsi_host->host_no,
1339 sd[i]->bus, sd[i]->target, sd[i]->lun);
1340 continue;
1341 }
1342
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001343 device_change = hpsa_scsi_find_entry(sd[i], h->dev,
1344 h->ndevices, &entry);
1345 if (device_change == DEVICE_NOT_FOUND) {
1346 changes++;
1347 if (hpsa_scsi_add_entry(h, hostno, sd[i],
1348 added, &nadded) != 0)
1349 break;
1350 sd[i] = NULL; /* prevent from being freed later. */
1351 } else if (device_change == DEVICE_CHANGED) {
1352 /* should never happen... */
1353 changes++;
1354 dev_warn(&h->pdev->dev,
1355 "device unexpectedly changed.\n");
1356 /* but if it does happen, we just ignore that device */
1357 }
1358 }
1359 spin_unlock_irqrestore(&h->devlock, flags);
1360
Stephen M. Cameron98465902014-02-21 16:25:00 -06001361 /* Monitor devices which are in one of several NOT READY states to be
1362 * brought online later. This must be done without holding h->devlock,
1363 * so don't touch h->dev[]
1364 */
1365 for (i = 0; i < nsds; i++) {
1366 if (!sd[i]) /* if already added above. */
1367 continue;
1368 if (sd[i]->volume_offline)
1369 hpsa_monitor_offline_device(h, sd[i]->scsi3addr);
1370 }
1371
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001372 /* Don't notify scsi mid layer of any changes the first time through
1373 * (or if there are no changes) scsi_scan_host will do it later the
1374 * first time through.
1375 */
1376 if (hostno == -1 || !changes)
1377 goto free_and_out;
1378
1379 sh = h->scsi_host;
1380 /* Notify scsi mid layer of any removed devices */
1381 for (i = 0; i < nremoved; i++) {
1382 struct scsi_device *sdev =
1383 scsi_device_lookup(sh, removed[i]->bus,
1384 removed[i]->target, removed[i]->lun);
1385 if (sdev != NULL) {
1386 scsi_remove_device(sdev);
1387 scsi_device_put(sdev);
1388 } else {
1389 /* We don't expect to get here.
1390 * future cmds to this device will get selection
1391 * timeout as if the device was gone.
1392 */
1393 dev_warn(&h->pdev->dev, "didn't find c%db%dt%dl%d "
1394 " for removal.", hostno, removed[i]->bus,
1395 removed[i]->target, removed[i]->lun);
1396 }
1397 kfree(removed[i]);
1398 removed[i] = NULL;
1399 }
1400
1401 /* Notify scsi mid layer of any added devices */
1402 for (i = 0; i < nadded; i++) {
1403 if (scsi_add_device(sh, added[i]->bus,
1404 added[i]->target, added[i]->lun) == 0)
1405 continue;
1406 dev_warn(&h->pdev->dev, "scsi_add_device c%db%dt%dl%d failed, "
1407 "device not added.\n", hostno, added[i]->bus,
1408 added[i]->target, added[i]->lun);
1409 /* now we have to remove it from h->dev,
1410 * since it didn't get added to scsi mid layer
1411 */
1412 fixup_botched_add(h, added[i]);
1413 }
1414
1415free_and_out:
1416 kfree(added);
1417 kfree(removed);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001418}
1419
1420/*
Joe Perches9e03aa22013-09-03 13:45:58 -07001421 * Lookup bus/target/lun and return corresponding struct hpsa_scsi_dev_t *
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001422 * Assume's h->devlock is held.
1423 */
1424static struct hpsa_scsi_dev_t *lookup_hpsa_scsi_dev(struct ctlr_info *h,
1425 int bus, int target, int lun)
1426{
1427 int i;
1428 struct hpsa_scsi_dev_t *sd;
1429
1430 for (i = 0; i < h->ndevices; i++) {
1431 sd = h->dev[i];
1432 if (sd->bus == bus && sd->target == target && sd->lun == lun)
1433 return sd;
1434 }
1435 return NULL;
1436}
1437
1438/* link sdev->hostdata to our per-device structure. */
1439static int hpsa_slave_alloc(struct scsi_device *sdev)
1440{
1441 struct hpsa_scsi_dev_t *sd;
1442 unsigned long flags;
1443 struct ctlr_info *h;
1444
1445 h = sdev_to_hba(sdev);
1446 spin_lock_irqsave(&h->devlock, flags);
1447 sd = lookup_hpsa_scsi_dev(h, sdev_channel(sdev),
1448 sdev_id(sdev), sdev->lun);
1449 if (sd != NULL)
1450 sdev->hostdata = sd;
1451 spin_unlock_irqrestore(&h->devlock, flags);
1452 return 0;
1453}
1454
1455static void hpsa_slave_destroy(struct scsi_device *sdev)
1456{
Stephen M. Cameronbcc44252010-02-04 08:41:54 -06001457 /* nothing to do. */
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001458}
1459
Stephen M. Cameron33a2ffc2010-02-25 14:03:27 -06001460static void hpsa_free_sg_chain_blocks(struct ctlr_info *h)
1461{
1462 int i;
1463
1464 if (!h->cmd_sg_list)
1465 return;
1466 for (i = 0; i < h->nr_cmds; i++) {
1467 kfree(h->cmd_sg_list[i]);
1468 h->cmd_sg_list[i] = NULL;
1469 }
1470 kfree(h->cmd_sg_list);
1471 h->cmd_sg_list = NULL;
1472}
1473
1474static int hpsa_allocate_sg_chain_blocks(struct ctlr_info *h)
1475{
1476 int i;
1477
1478 if (h->chainsize <= 0)
1479 return 0;
1480
1481 h->cmd_sg_list = kzalloc(sizeof(*h->cmd_sg_list) * h->nr_cmds,
1482 GFP_KERNEL);
1483 if (!h->cmd_sg_list)
1484 return -ENOMEM;
1485 for (i = 0; i < h->nr_cmds; i++) {
1486 h->cmd_sg_list[i] = kmalloc(sizeof(*h->cmd_sg_list[i]) *
1487 h->chainsize, GFP_KERNEL);
1488 if (!h->cmd_sg_list[i])
1489 goto clean;
1490 }
1491 return 0;
1492
1493clean:
1494 hpsa_free_sg_chain_blocks(h);
1495 return -ENOMEM;
1496}
1497
Stephen M. Camerone2bea6d2013-02-20 11:24:46 -06001498static int hpsa_map_sg_chain_block(struct ctlr_info *h,
Stephen M. Cameron33a2ffc2010-02-25 14:03:27 -06001499 struct CommandList *c)
1500{
1501 struct SGDescriptor *chain_sg, *chain_block;
1502 u64 temp64;
1503
1504 chain_sg = &c->SG[h->max_cmd_sg_entries - 1];
1505 chain_block = h->cmd_sg_list[c->cmdindex];
1506 chain_sg->Ext = HPSA_SG_CHAIN;
1507 chain_sg->Len = sizeof(*chain_sg) *
1508 (c->Header.SGTotal - h->max_cmd_sg_entries);
1509 temp64 = pci_map_single(h->pdev, chain_block, chain_sg->Len,
1510 PCI_DMA_TODEVICE);
Stephen M. Camerone2bea6d2013-02-20 11:24:46 -06001511 if (dma_mapping_error(&h->pdev->dev, temp64)) {
1512 /* prevent subsequent unmapping */
1513 chain_sg->Addr.lower = 0;
1514 chain_sg->Addr.upper = 0;
1515 return -1;
1516 }
Stephen M. Cameron33a2ffc2010-02-25 14:03:27 -06001517 chain_sg->Addr.lower = (u32) (temp64 & 0x0FFFFFFFFULL);
1518 chain_sg->Addr.upper = (u32) ((temp64 >> 32) & 0x0FFFFFFFFULL);
Stephen M. Camerone2bea6d2013-02-20 11:24:46 -06001519 return 0;
Stephen M. Cameron33a2ffc2010-02-25 14:03:27 -06001520}
1521
1522static void hpsa_unmap_sg_chain_block(struct ctlr_info *h,
1523 struct CommandList *c)
1524{
1525 struct SGDescriptor *chain_sg;
1526 union u64bit temp64;
1527
1528 if (c->Header.SGTotal <= h->max_cmd_sg_entries)
1529 return;
1530
1531 chain_sg = &c->SG[h->max_cmd_sg_entries - 1];
1532 temp64.val32.lower = chain_sg->Addr.lower;
1533 temp64.val32.upper = chain_sg->Addr.upper;
1534 pci_unmap_single(h->pdev, temp64.val, chain_sg->Len, PCI_DMA_TODEVICE);
1535}
1536
Scott Teela09c1442014-02-18 13:57:21 -06001537
1538/* Decode the various types of errors on ioaccel2 path.
1539 * Return 1 for any error that should generate a RAID path retry.
1540 * Return 0 for errors that don't require a RAID path retry.
1541 */
1542static int handle_ioaccel_mode2_error(struct ctlr_info *h,
Scott Teelc3497752014-02-18 13:56:34 -06001543 struct CommandList *c,
1544 struct scsi_cmnd *cmd,
1545 struct io_accel2_cmd *c2)
1546{
1547 int data_len;
Scott Teela09c1442014-02-18 13:57:21 -06001548 int retry = 0;
Scott Teelc3497752014-02-18 13:56:34 -06001549
1550 switch (c2->error_data.serv_response) {
1551 case IOACCEL2_SERV_RESPONSE_COMPLETE:
1552 switch (c2->error_data.status) {
1553 case IOACCEL2_STATUS_SR_TASK_COMP_GOOD:
1554 break;
1555 case IOACCEL2_STATUS_SR_TASK_COMP_CHK_COND:
1556 dev_warn(&h->pdev->dev,
1557 "%s: task complete with check condition.\n",
1558 "HP SSD Smart Path");
1559 if (c2->error_data.data_present !=
1560 IOACCEL2_SENSE_DATA_PRESENT)
1561 break;
1562 /* copy the sense data */
1563 data_len = c2->error_data.sense_data_len;
1564 if (data_len > SCSI_SENSE_BUFFERSIZE)
1565 data_len = SCSI_SENSE_BUFFERSIZE;
1566 if (data_len > sizeof(c2->error_data.sense_data_buff))
1567 data_len =
1568 sizeof(c2->error_data.sense_data_buff);
1569 memcpy(cmd->sense_buffer,
1570 c2->error_data.sense_data_buff, data_len);
1571 cmd->result |= SAM_STAT_CHECK_CONDITION;
Scott Teela09c1442014-02-18 13:57:21 -06001572 retry = 1;
Scott Teelc3497752014-02-18 13:56:34 -06001573 break;
1574 case IOACCEL2_STATUS_SR_TASK_COMP_BUSY:
1575 dev_warn(&h->pdev->dev,
1576 "%s: task complete with BUSY status.\n",
1577 "HP SSD Smart Path");
Scott Teela09c1442014-02-18 13:57:21 -06001578 retry = 1;
Scott Teelc3497752014-02-18 13:56:34 -06001579 break;
1580 case IOACCEL2_STATUS_SR_TASK_COMP_RES_CON:
1581 dev_warn(&h->pdev->dev,
1582 "%s: task complete with reservation conflict.\n",
1583 "HP SSD Smart Path");
Scott Teela09c1442014-02-18 13:57:21 -06001584 retry = 1;
Scott Teelc3497752014-02-18 13:56:34 -06001585 break;
1586 case IOACCEL2_STATUS_SR_TASK_COMP_SET_FULL:
1587 /* Make scsi midlayer do unlimited retries */
1588 cmd->result = DID_IMM_RETRY << 16;
1589 break;
1590 case IOACCEL2_STATUS_SR_TASK_COMP_ABORTED:
1591 dev_warn(&h->pdev->dev,
1592 "%s: task complete with aborted status.\n",
1593 "HP SSD Smart Path");
Scott Teela09c1442014-02-18 13:57:21 -06001594 retry = 1;
Scott Teelc3497752014-02-18 13:56:34 -06001595 break;
1596 default:
1597 dev_warn(&h->pdev->dev,
1598 "%s: task complete with unrecognized status: 0x%02x\n",
1599 "HP SSD Smart Path", c2->error_data.status);
Scott Teela09c1442014-02-18 13:57:21 -06001600 retry = 1;
Scott Teelc3497752014-02-18 13:56:34 -06001601 break;
1602 }
1603 break;
1604 case IOACCEL2_SERV_RESPONSE_FAILURE:
1605 /* don't expect to get here. */
1606 dev_warn(&h->pdev->dev,
1607 "unexpected delivery or target failure, status = 0x%02x\n",
1608 c2->error_data.status);
Scott Teela09c1442014-02-18 13:57:21 -06001609 retry = 1;
Scott Teelc3497752014-02-18 13:56:34 -06001610 break;
1611 case IOACCEL2_SERV_RESPONSE_TMF_COMPLETE:
1612 break;
1613 case IOACCEL2_SERV_RESPONSE_TMF_SUCCESS:
1614 break;
1615 case IOACCEL2_SERV_RESPONSE_TMF_REJECTED:
1616 dev_warn(&h->pdev->dev, "task management function rejected.\n");
Scott Teela09c1442014-02-18 13:57:21 -06001617 retry = 1;
Scott Teelc3497752014-02-18 13:56:34 -06001618 break;
1619 case IOACCEL2_SERV_RESPONSE_TMF_WRONG_LUN:
1620 dev_warn(&h->pdev->dev, "task management function invalid LUN\n");
1621 break;
1622 default:
1623 dev_warn(&h->pdev->dev,
1624 "%s: Unrecognized server response: 0x%02x\n",
Scott Teela09c1442014-02-18 13:57:21 -06001625 "HP SSD Smart Path",
1626 c2->error_data.serv_response);
1627 retry = 1;
Scott Teelc3497752014-02-18 13:56:34 -06001628 break;
1629 }
Scott Teela09c1442014-02-18 13:57:21 -06001630
1631 return retry; /* retry on raid path? */
Scott Teelc3497752014-02-18 13:56:34 -06001632}
1633
1634static void process_ioaccel2_completion(struct ctlr_info *h,
1635 struct CommandList *c, struct scsi_cmnd *cmd,
1636 struct hpsa_scsi_dev_t *dev)
1637{
1638 struct io_accel2_cmd *c2 = &h->ioaccel2_cmd_pool[c->cmdindex];
Scott Teela09c1442014-02-18 13:57:21 -06001639 int raid_retry = 0;
Scott Teelc3497752014-02-18 13:56:34 -06001640
1641 /* check for good status */
1642 if (likely(c2->error_data.serv_response == 0 &&
1643 c2->error_data.status == 0)) {
1644 cmd_free(h, c);
1645 cmd->scsi_done(cmd);
1646 return;
1647 }
1648
1649 /* Any RAID offload error results in retry which will use
1650 * the normal I/O path so the controller can handle whatever's
1651 * wrong.
1652 */
1653 if (is_logical_dev_addr_mode(dev->scsi3addr) &&
1654 c2->error_data.serv_response ==
1655 IOACCEL2_SERV_RESPONSE_FAILURE) {
Scott Teela09c1442014-02-18 13:57:21 -06001656 if (c2->error_data.status ==
1657 IOACCEL2_STATUS_SR_IOACCEL_DISABLED)
Scott Teelc3497752014-02-18 13:56:34 -06001658 dev_warn(&h->pdev->dev,
Scott Teela09c1442014-02-18 13:57:21 -06001659 "%s: Path is unavailable, retrying on standard path.\n",
1660 "HP SSD Smart Path");
1661 else
1662 dev_warn(&h->pdev->dev,
1663 "%s: Error 0x%02x, retrying on standard path.\n",
Scott Teelc3497752014-02-18 13:56:34 -06001664 "HP SSD Smart Path", c2->error_data.status);
Scott Teela09c1442014-02-18 13:57:21 -06001665
Scott Teelc3497752014-02-18 13:56:34 -06001666 dev->offload_enabled = 0;
Scott Teele863d682014-02-18 13:57:05 -06001667 h->drv_req_rescan = 1; /* schedule controller for a rescan */
Scott Teelc3497752014-02-18 13:56:34 -06001668 cmd->result = DID_SOFT_ERROR << 16;
1669 cmd_free(h, c);
1670 cmd->scsi_done(cmd);
1671 return;
1672 }
Scott Teela09c1442014-02-18 13:57:21 -06001673 raid_retry = handle_ioaccel_mode2_error(h, c, cmd, c2);
1674 /* If error found, disable Smart Path, schedule a rescan,
1675 * and force a retry on the standard path.
1676 */
1677 if (raid_retry) {
1678 dev_warn(&h->pdev->dev, "%s: Retrying on standard path.\n",
1679 "HP SSD Smart Path");
1680 dev->offload_enabled = 0; /* Disable Smart Path */
1681 h->drv_req_rescan = 1; /* schedule controller rescan */
1682 cmd->result = DID_SOFT_ERROR << 16;
1683 }
Scott Teelc3497752014-02-18 13:56:34 -06001684 cmd_free(h, c);
1685 cmd->scsi_done(cmd);
1686}
1687
Stephen M. Cameron1fb011f2011-05-03 14:59:00 -05001688static void complete_scsi_command(struct CommandList *cp)
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001689{
1690 struct scsi_cmnd *cmd;
1691 struct ctlr_info *h;
1692 struct ErrorInfo *ei;
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06001693 struct hpsa_scsi_dev_t *dev;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001694
1695 unsigned char sense_key;
1696 unsigned char asc; /* additional sense code */
1697 unsigned char ascq; /* additional sense code qualifier */
Stephen M. Camerondb111e12011-06-03 09:57:34 -05001698 unsigned long sense_data_size;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001699
1700 ei = cp->err_info;
1701 cmd = (struct scsi_cmnd *) cp->scsi_cmd;
1702 h = cp->h;
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06001703 dev = cmd->device->hostdata;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001704
1705 scsi_dma_unmap(cmd); /* undo the DMA mappings */
Matt Gatese1f7de02014-02-18 13:55:17 -06001706 if ((cp->cmd_type == CMD_SCSI) &&
1707 (cp->Header.SGTotal > h->max_cmd_sg_entries))
Stephen M. Cameron33a2ffc2010-02-25 14:03:27 -06001708 hpsa_unmap_sg_chain_block(h, cp);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001709
1710 cmd->result = (DID_OK << 16); /* host byte */
1711 cmd->result |= (COMMAND_COMPLETE << 8); /* msg byte */
Scott Teelc3497752014-02-18 13:56:34 -06001712
1713 if (cp->cmd_type == CMD_IOACCEL2)
1714 return process_ioaccel2_completion(h, cp, cmd, dev);
1715
Stephen M. Cameron55126722010-02-25 14:03:01 -06001716 cmd->result |= ei->ScsiStatus;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001717
1718 /* copy the sense data whether we need to or not. */
Stephen M. Camerondb111e12011-06-03 09:57:34 -05001719 if (SCSI_SENSE_BUFFERSIZE < sizeof(ei->SenseInfo))
1720 sense_data_size = SCSI_SENSE_BUFFERSIZE;
1721 else
1722 sense_data_size = sizeof(ei->SenseInfo);
1723 if (ei->SenseLen < sense_data_size)
1724 sense_data_size = ei->SenseLen;
1725
1726 memcpy(cmd->sense_buffer, ei->SenseInfo, sense_data_size);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001727 scsi_set_resid(cmd, ei->ResidualCnt);
1728
1729 if (ei->CommandStatus == 0) {
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001730 cmd_free(h, cp);
Tomas Henzl2cc5bfa2013-08-01 15:14:00 +02001731 cmd->scsi_done(cmd);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001732 return;
1733 }
1734
Matt Gatese1f7de02014-02-18 13:55:17 -06001735 /* For I/O accelerator commands, copy over some fields to the normal
1736 * CISS header used below for error handling.
1737 */
1738 if (cp->cmd_type == CMD_IOACCEL1) {
1739 struct io_accel1_cmd *c = &h->ioaccel_cmd_pool[cp->cmdindex];
1740 cp->Header.SGList = cp->Header.SGTotal = scsi_sg_count(cmd);
1741 cp->Request.CDBLen = c->io_flags & IOACCEL1_IOFLAGS_CDBLEN_MASK;
1742 cp->Header.Tag.lower = c->Tag.lower;
1743 cp->Header.Tag.upper = c->Tag.upper;
1744 memcpy(cp->Header.LUN.LunAddrBytes, c->CISS_LUN, 8);
1745 memcpy(cp->Request.CDB, c->CDB, cp->Request.CDBLen);
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06001746
1747 /* Any RAID offload error results in retry which will use
1748 * the normal I/O path so the controller can handle whatever's
1749 * wrong.
1750 */
1751 if (is_logical_dev_addr_mode(dev->scsi3addr)) {
1752 if (ei->CommandStatus == CMD_IOACCEL_DISABLED)
1753 dev->offload_enabled = 0;
1754 cmd->result = DID_SOFT_ERROR << 16;
1755 cmd_free(h, cp);
1756 cmd->scsi_done(cmd);
1757 return;
1758 }
Matt Gatese1f7de02014-02-18 13:55:17 -06001759 }
1760
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001761 /* an error has occurred */
1762 switch (ei->CommandStatus) {
1763
1764 case CMD_TARGET_STATUS:
1765 if (ei->ScsiStatus) {
1766 /* Get sense key */
1767 sense_key = 0xf & ei->SenseInfo[2];
1768 /* Get additional sense code */
1769 asc = ei->SenseInfo[12];
1770 /* Get addition sense code qualifier */
1771 ascq = ei->SenseInfo[13];
1772 }
1773
1774 if (ei->ScsiStatus == SAM_STAT_CHECK_CONDITION) {
Matt Gates3ce438d2013-12-04 17:10:36 -06001775 if (check_for_unit_attention(h, cp))
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001776 break;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001777 if (sense_key == ILLEGAL_REQUEST) {
1778 /*
1779 * SCSI REPORT_LUNS is commonly unsupported on
1780 * Smart Array. Suppress noisy complaint.
1781 */
1782 if (cp->Request.CDB[0] == REPORT_LUNS)
1783 break;
1784
1785 /* If ASC/ASCQ indicate Logical Unit
1786 * Not Supported condition,
1787 */
1788 if ((asc == 0x25) && (ascq == 0x0)) {
1789 dev_warn(&h->pdev->dev, "cp %p "
1790 "has check condition\n", cp);
1791 break;
1792 }
1793 }
1794
1795 if (sense_key == NOT_READY) {
1796 /* If Sense is Not Ready, Logical Unit
1797 * Not ready, Manual Intervention
1798 * required
1799 */
1800 if ((asc == 0x04) && (ascq == 0x03)) {
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001801 dev_warn(&h->pdev->dev, "cp %p "
1802 "has check condition: unit "
1803 "not ready, manual "
1804 "intervention required\n", cp);
1805 break;
1806 }
1807 }
Matt Gates1d3b3602010-02-04 08:43:00 -06001808 if (sense_key == ABORTED_COMMAND) {
1809 /* Aborted command is retryable */
1810 dev_warn(&h->pdev->dev, "cp %p "
1811 "has check condition: aborted command: "
1812 "ASC: 0x%x, ASCQ: 0x%x\n",
1813 cp, asc, ascq);
Stephen M. Cameron2e311fb2013-09-23 13:33:41 -05001814 cmd->result |= DID_SOFT_ERROR << 16;
Matt Gates1d3b3602010-02-04 08:43:00 -06001815 break;
1816 }
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001817 /* Must be some other type of check condition */
Stephen M. Cameron21b8e4e2012-05-01 11:42:25 -05001818 dev_dbg(&h->pdev->dev, "cp %p has check condition: "
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001819 "unknown type: "
1820 "Sense: 0x%x, ASC: 0x%x, ASCQ: 0x%x, "
1821 "Returning result: 0x%x, "
1822 "cmd=[%02x %02x %02x %02x %02x "
Mike Miller807be732010-02-04 08:43:26 -06001823 "%02x %02x %02x %02x %02x %02x "
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001824 "%02x %02x %02x %02x %02x]\n",
1825 cp, sense_key, asc, ascq,
1826 cmd->result,
1827 cmd->cmnd[0], cmd->cmnd[1],
1828 cmd->cmnd[2], cmd->cmnd[3],
1829 cmd->cmnd[4], cmd->cmnd[5],
1830 cmd->cmnd[6], cmd->cmnd[7],
Mike Miller807be732010-02-04 08:43:26 -06001831 cmd->cmnd[8], cmd->cmnd[9],
1832 cmd->cmnd[10], cmd->cmnd[11],
1833 cmd->cmnd[12], cmd->cmnd[13],
1834 cmd->cmnd[14], cmd->cmnd[15]);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001835 break;
1836 }
1837
1838
1839 /* Problem was not a check condition
1840 * Pass it up to the upper layers...
1841 */
1842 if (ei->ScsiStatus) {
1843 dev_warn(&h->pdev->dev, "cp %p has status 0x%x "
1844 "Sense: 0x%x, ASC: 0x%x, ASCQ: 0x%x, "
1845 "Returning result: 0x%x\n",
1846 cp, ei->ScsiStatus,
1847 sense_key, asc, ascq,
1848 cmd->result);
1849 } else { /* scsi status is zero??? How??? */
1850 dev_warn(&h->pdev->dev, "cp %p SCSI status was 0. "
1851 "Returning no connection.\n", cp),
1852
1853 /* Ordinarily, this case should never happen,
1854 * but there is a bug in some released firmware
1855 * revisions that allows it to happen if, for
1856 * example, a 4100 backplane loses power and
1857 * the tape drive is in it. We assume that
1858 * it's a fatal error of some kind because we
1859 * can't show that it wasn't. We will make it
1860 * look like selection timeout since that is
1861 * the most common reason for this to occur,
1862 * and it's severe enough.
1863 */
1864
1865 cmd->result = DID_NO_CONNECT << 16;
1866 }
1867 break;
1868
1869 case CMD_DATA_UNDERRUN: /* let mid layer handle it. */
1870 break;
1871 case CMD_DATA_OVERRUN:
1872 dev_warn(&h->pdev->dev, "cp %p has"
1873 " completed with data overrun "
1874 "reported\n", cp);
1875 break;
1876 case CMD_INVALID: {
1877 /* print_bytes(cp, sizeof(*cp), 1, 0);
1878 print_cmd(cp); */
1879 /* We get CMD_INVALID if you address a non-existent device
1880 * instead of a selection timeout (no response). You will
1881 * see this if you yank out a drive, then try to access it.
1882 * This is kind of a shame because it means that any other
1883 * CMD_INVALID (e.g. driver bug) will get interpreted as a
1884 * missing target. */
1885 cmd->result = DID_NO_CONNECT << 16;
1886 }
1887 break;
1888 case CMD_PROTOCOL_ERR:
Stephen M. Cameron256d0ea2012-09-14 16:34:25 -05001889 cmd->result = DID_ERROR << 16;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001890 dev_warn(&h->pdev->dev, "cp %p has "
Stephen M. Cameron256d0ea2012-09-14 16:34:25 -05001891 "protocol error\n", cp);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001892 break;
1893 case CMD_HARDWARE_ERR:
1894 cmd->result = DID_ERROR << 16;
1895 dev_warn(&h->pdev->dev, "cp %p had hardware error\n", cp);
1896 break;
1897 case CMD_CONNECTION_LOST:
1898 cmd->result = DID_ERROR << 16;
1899 dev_warn(&h->pdev->dev, "cp %p had connection lost\n", cp);
1900 break;
1901 case CMD_ABORTED:
1902 cmd->result = DID_ABORT << 16;
1903 dev_warn(&h->pdev->dev, "cp %p was aborted with status 0x%x\n",
1904 cp, ei->ScsiStatus);
1905 break;
1906 case CMD_ABORT_FAILED:
1907 cmd->result = DID_ERROR << 16;
1908 dev_warn(&h->pdev->dev, "cp %p reports abort failed\n", cp);
1909 break;
1910 case CMD_UNSOLICITED_ABORT:
Stephen M. Cameronf6e76052011-07-26 11:08:52 -05001911 cmd->result = DID_SOFT_ERROR << 16; /* retry the command */
1912 dev_warn(&h->pdev->dev, "cp %p aborted due to an unsolicited "
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001913 "abort\n", cp);
1914 break;
1915 case CMD_TIMEOUT:
1916 cmd->result = DID_TIME_OUT << 16;
1917 dev_warn(&h->pdev->dev, "cp %p timedout\n", cp);
1918 break;
Stephen M. Cameron1d5e2ed2011-01-07 10:55:48 -06001919 case CMD_UNABORTABLE:
1920 cmd->result = DID_ERROR << 16;
1921 dev_warn(&h->pdev->dev, "Command unabortable\n");
1922 break;
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06001923 case CMD_IOACCEL_DISABLED:
1924 /* This only handles the direct pass-through case since RAID
1925 * offload is handled above. Just attempt a retry.
1926 */
1927 cmd->result = DID_SOFT_ERROR << 16;
1928 dev_warn(&h->pdev->dev,
1929 "cp %p had HP SSD Smart Path error\n", cp);
1930 break;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001931 default:
1932 cmd->result = DID_ERROR << 16;
1933 dev_warn(&h->pdev->dev, "cp %p returned unknown status %x\n",
1934 cp, ei->CommandStatus);
1935 }
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001936 cmd_free(h, cp);
Tomas Henzl2cc5bfa2013-08-01 15:14:00 +02001937 cmd->scsi_done(cmd);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001938}
1939
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001940static void hpsa_pci_unmap(struct pci_dev *pdev,
1941 struct CommandList *c, int sg_used, int data_direction)
1942{
1943 int i;
1944 union u64bit addr64;
1945
1946 for (i = 0; i < sg_used; i++) {
1947 addr64.val32.lower = c->SG[i].Addr.lower;
1948 addr64.val32.upper = c->SG[i].Addr.upper;
1949 pci_unmap_single(pdev, (dma_addr_t) addr64.val, c->SG[i].Len,
1950 data_direction);
1951 }
1952}
1953
Stephen M. Camerona2dac132013-02-20 11:24:41 -06001954static int hpsa_map_one(struct pci_dev *pdev,
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001955 struct CommandList *cp,
1956 unsigned char *buf,
1957 size_t buflen,
1958 int data_direction)
1959{
Stephen M. Cameron01a02ff2010-02-04 08:41:33 -06001960 u64 addr64;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001961
1962 if (buflen == 0 || data_direction == PCI_DMA_NONE) {
1963 cp->Header.SGList = 0;
1964 cp->Header.SGTotal = 0;
Stephen M. Camerona2dac132013-02-20 11:24:41 -06001965 return 0;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001966 }
1967
Stephen M. Cameron01a02ff2010-02-04 08:41:33 -06001968 addr64 = (u64) pci_map_single(pdev, buf, buflen, data_direction);
Shuah Khaneceaae12013-02-20 11:24:34 -06001969 if (dma_mapping_error(&pdev->dev, addr64)) {
Stephen M. Camerona2dac132013-02-20 11:24:41 -06001970 /* Prevent subsequent unmap of something never mapped */
Shuah Khaneceaae12013-02-20 11:24:34 -06001971 cp->Header.SGList = 0;
1972 cp->Header.SGTotal = 0;
Stephen M. Camerona2dac132013-02-20 11:24:41 -06001973 return -1;
Shuah Khaneceaae12013-02-20 11:24:34 -06001974 }
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001975 cp->SG[0].Addr.lower =
Stephen M. Cameron01a02ff2010-02-04 08:41:33 -06001976 (u32) (addr64 & (u64) 0x00000000FFFFFFFF);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001977 cp->SG[0].Addr.upper =
Stephen M. Cameron01a02ff2010-02-04 08:41:33 -06001978 (u32) ((addr64 >> 32) & (u64) 0x00000000FFFFFFFF);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001979 cp->SG[0].Len = buflen;
Matt Gatese1d9cbf2014-02-18 13:55:12 -06001980 cp->SG[0].Ext = HPSA_SG_LAST; /* we are not chaining */
Stephen M. Cameron01a02ff2010-02-04 08:41:33 -06001981 cp->Header.SGList = (u8) 1; /* no. SGs contig in this cmd */
1982 cp->Header.SGTotal = (u16) 1; /* total sgs in this cmd list */
Stephen M. Camerona2dac132013-02-20 11:24:41 -06001983 return 0;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001984}
1985
1986static inline void hpsa_scsi_do_simple_cmd_core(struct ctlr_info *h,
1987 struct CommandList *c)
1988{
1989 DECLARE_COMPLETION_ONSTACK(wait);
1990
1991 c->waiting = &wait;
1992 enqueue_cmd_and_start_io(h, c);
1993 wait_for_completion(&wait);
1994}
1995
Stephen M. Cameron094963d2014-05-29 10:53:18 -05001996static u32 lockup_detected(struct ctlr_info *h)
1997{
1998 int cpu;
1999 u32 rc, *lockup_detected;
2000
2001 cpu = get_cpu();
2002 lockup_detected = per_cpu_ptr(h->lockup_detected, cpu);
2003 rc = *lockup_detected;
2004 put_cpu();
2005 return rc;
2006}
2007
Stephen M. Camerona0c12412011-10-26 16:22:04 -05002008static void hpsa_scsi_do_simple_cmd_core_if_no_lockup(struct ctlr_info *h,
2009 struct CommandList *c)
2010{
Stephen M. Camerona0c12412011-10-26 16:22:04 -05002011 /* If controller lockup detected, fake a hardware error. */
Stephen M. Cameron094963d2014-05-29 10:53:18 -05002012 if (unlikely(lockup_detected(h)))
Stephen M. Camerona0c12412011-10-26 16:22:04 -05002013 c->err_info->CommandStatus = CMD_HARDWARE_ERR;
Stephen M. Cameron094963d2014-05-29 10:53:18 -05002014 else
Stephen M. Camerona0c12412011-10-26 16:22:04 -05002015 hpsa_scsi_do_simple_cmd_core(h, c);
Stephen M. Camerona0c12412011-10-26 16:22:04 -05002016}
2017
Stephen M. Cameron9c2fc162012-05-01 11:42:40 -05002018#define MAX_DRIVER_CMD_RETRIES 25
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002019static void hpsa_scsi_do_simple_cmd_with_retry(struct ctlr_info *h,
2020 struct CommandList *c, int data_direction)
2021{
Stephen M. Cameron9c2fc162012-05-01 11:42:40 -05002022 int backoff_time = 10, retry_count = 0;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002023
2024 do {
Joe Perches7630abd2011-05-08 23:32:40 -07002025 memset(c->err_info, 0, sizeof(*c->err_info));
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002026 hpsa_scsi_do_simple_cmd_core(h, c);
2027 retry_count++;
Stephen M. Cameron9c2fc162012-05-01 11:42:40 -05002028 if (retry_count > 3) {
2029 msleep(backoff_time);
2030 if (backoff_time < 1000)
2031 backoff_time *= 2;
2032 }
Matt Bondurant852af202012-05-01 11:42:35 -05002033 } while ((check_for_unit_attention(h, c) ||
Stephen M. Cameron9c2fc162012-05-01 11:42:40 -05002034 check_for_busy(h, c)) &&
2035 retry_count <= MAX_DRIVER_CMD_RETRIES);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002036 hpsa_pci_unmap(h->pdev, c, 1, data_direction);
2037}
2038
Stephen M. Camerond1e8bea2014-02-18 13:57:47 -06002039static void hpsa_print_cmd(struct ctlr_info *h, char *txt,
2040 struct CommandList *c)
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002041{
Stephen M. Camerond1e8bea2014-02-18 13:57:47 -06002042 const u8 *cdb = c->Request.CDB;
2043 const u8 *lun = c->Header.LUN.LunAddrBytes;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002044
Stephen M. Camerond1e8bea2014-02-18 13:57:47 -06002045 dev_warn(&h->pdev->dev, "%s: LUN:%02x%02x%02x%02x%02x%02x%02x%02x"
2046 " CDB:%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x\n",
2047 txt, lun[0], lun[1], lun[2], lun[3],
2048 lun[4], lun[5], lun[6], lun[7],
2049 cdb[0], cdb[1], cdb[2], cdb[3],
2050 cdb[4], cdb[5], cdb[6], cdb[7],
2051 cdb[8], cdb[9], cdb[10], cdb[11],
2052 cdb[12], cdb[13], cdb[14], cdb[15]);
2053}
2054
2055static void hpsa_scsi_interpret_error(struct ctlr_info *h,
2056 struct CommandList *cp)
2057{
2058 const struct ErrorInfo *ei = cp->err_info;
2059 struct device *d = &cp->h->pdev->dev;
2060 const u8 *sd = ei->SenseInfo;
2061
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002062 switch (ei->CommandStatus) {
2063 case CMD_TARGET_STATUS:
Stephen M. Camerond1e8bea2014-02-18 13:57:47 -06002064 hpsa_print_cmd(h, "SCSI status", cp);
2065 if (ei->ScsiStatus == SAM_STAT_CHECK_CONDITION)
2066 dev_warn(d, "SCSI Status = 02, Sense key = %02x, ASC = %02x, ASCQ = %02x\n",
2067 sd[2] & 0x0f, sd[12], sd[13]);
2068 else
2069 dev_warn(d, "SCSI Status = %02x\n", ei->ScsiStatus);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002070 if (ei->ScsiStatus == 0)
2071 dev_warn(d, "SCSI status is abnormally zero. "
2072 "(probably indicates selection timeout "
2073 "reported incorrectly due to a known "
2074 "firmware bug, circa July, 2001.)\n");
2075 break;
2076 case CMD_DATA_UNDERRUN: /* let mid layer handle it. */
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002077 break;
2078 case CMD_DATA_OVERRUN:
Stephen M. Camerond1e8bea2014-02-18 13:57:47 -06002079 hpsa_print_cmd(h, "overrun condition", cp);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002080 break;
2081 case CMD_INVALID: {
2082 /* controller unfortunately reports SCSI passthru's
2083 * to non-existent targets as invalid commands.
2084 */
Stephen M. Camerond1e8bea2014-02-18 13:57:47 -06002085 hpsa_print_cmd(h, "invalid command", cp);
2086 dev_warn(d, "probably means device no longer present\n");
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002087 }
2088 break;
2089 case CMD_PROTOCOL_ERR:
Stephen M. Camerond1e8bea2014-02-18 13:57:47 -06002090 hpsa_print_cmd(h, "protocol error", cp);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002091 break;
2092 case CMD_HARDWARE_ERR:
Stephen M. Camerond1e8bea2014-02-18 13:57:47 -06002093 hpsa_print_cmd(h, "hardware error", cp);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002094 break;
2095 case CMD_CONNECTION_LOST:
Stephen M. Camerond1e8bea2014-02-18 13:57:47 -06002096 hpsa_print_cmd(h, "connection lost", cp);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002097 break;
2098 case CMD_ABORTED:
Stephen M. Camerond1e8bea2014-02-18 13:57:47 -06002099 hpsa_print_cmd(h, "aborted", cp);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002100 break;
2101 case CMD_ABORT_FAILED:
Stephen M. Camerond1e8bea2014-02-18 13:57:47 -06002102 hpsa_print_cmd(h, "abort failed", cp);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002103 break;
2104 case CMD_UNSOLICITED_ABORT:
Stephen M. Camerond1e8bea2014-02-18 13:57:47 -06002105 hpsa_print_cmd(h, "unsolicited abort", cp);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002106 break;
2107 case CMD_TIMEOUT:
Stephen M. Camerond1e8bea2014-02-18 13:57:47 -06002108 hpsa_print_cmd(h, "timed out", cp);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002109 break;
Stephen M. Cameron1d5e2ed2011-01-07 10:55:48 -06002110 case CMD_UNABORTABLE:
Stephen M. Camerond1e8bea2014-02-18 13:57:47 -06002111 hpsa_print_cmd(h, "unabortable", cp);
Stephen M. Cameron1d5e2ed2011-01-07 10:55:48 -06002112 break;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002113 default:
Stephen M. Camerond1e8bea2014-02-18 13:57:47 -06002114 hpsa_print_cmd(h, "unknown status", cp);
2115 dev_warn(d, "Unknown command status %x\n",
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002116 ei->CommandStatus);
2117 }
2118}
2119
2120static int hpsa_scsi_do_inquiry(struct ctlr_info *h, unsigned char *scsi3addr,
Stephen M. Cameronb7bb24e2014-02-18 13:57:11 -06002121 u16 page, unsigned char *buf,
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002122 unsigned char bufsize)
2123{
2124 int rc = IO_OK;
2125 struct CommandList *c;
2126 struct ErrorInfo *ei;
2127
2128 c = cmd_special_alloc(h);
2129
2130 if (c == NULL) { /* trouble... */
2131 dev_warn(&h->pdev->dev, "cmd_special_alloc returned NULL!\n");
Stephen M. Cameronecd9aad2010-02-04 08:41:59 -06002132 return -ENOMEM;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002133 }
2134
Stephen M. Camerona2dac132013-02-20 11:24:41 -06002135 if (fill_cmd(c, HPSA_INQUIRY, h, buf, bufsize,
2136 page, scsi3addr, TYPE_CMD)) {
2137 rc = -1;
2138 goto out;
2139 }
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002140 hpsa_scsi_do_simple_cmd_with_retry(h, c, PCI_DMA_FROMDEVICE);
2141 ei = c->err_info;
2142 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) {
Stephen M. Camerond1e8bea2014-02-18 13:57:47 -06002143 hpsa_scsi_interpret_error(h, c);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002144 rc = -1;
2145 }
Stephen M. Camerona2dac132013-02-20 11:24:41 -06002146out:
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002147 cmd_special_free(h, c);
2148 return rc;
2149}
2150
Stephen M. Cameron316b2212014-02-21 16:25:15 -06002151static int hpsa_bmic_ctrl_mode_sense(struct ctlr_info *h,
2152 unsigned char *scsi3addr, unsigned char page,
2153 struct bmic_controller_parameters *buf, size_t bufsize)
2154{
2155 int rc = IO_OK;
2156 struct CommandList *c;
2157 struct ErrorInfo *ei;
2158
2159 c = cmd_special_alloc(h);
2160
2161 if (c == NULL) { /* trouble... */
2162 dev_warn(&h->pdev->dev, "cmd_special_alloc returned NULL!\n");
2163 return -ENOMEM;
2164 }
2165
2166 if (fill_cmd(c, BMIC_SENSE_CONTROLLER_PARAMETERS, h, buf, bufsize,
2167 page, scsi3addr, TYPE_CMD)) {
2168 rc = -1;
2169 goto out;
2170 }
2171 hpsa_scsi_do_simple_cmd_with_retry(h, c, PCI_DMA_FROMDEVICE);
2172 ei = c->err_info;
2173 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) {
2174 hpsa_scsi_interpret_error(h, c);
2175 rc = -1;
2176 }
2177out:
2178 cmd_special_free(h, c);
2179 return rc;
2180 }
2181
Scott Teelbf711ac2014-02-18 13:56:39 -06002182static int hpsa_send_reset(struct ctlr_info *h, unsigned char *scsi3addr,
2183 u8 reset_type)
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002184{
2185 int rc = IO_OK;
2186 struct CommandList *c;
2187 struct ErrorInfo *ei;
2188
2189 c = cmd_special_alloc(h);
2190
2191 if (c == NULL) { /* trouble... */
2192 dev_warn(&h->pdev->dev, "cmd_special_alloc returned NULL!\n");
Stephen M. Camerone9ea04a2010-02-25 14:03:06 -06002193 return -ENOMEM;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002194 }
2195
Stephen M. Camerona2dac132013-02-20 11:24:41 -06002196 /* fill_cmd can't fail here, no data buffer to map. */
Scott Teelbf711ac2014-02-18 13:56:39 -06002197 (void) fill_cmd(c, HPSA_DEVICE_RESET_MSG, h, NULL, 0, 0,
2198 scsi3addr, TYPE_MSG);
2199 c->Request.CDB[1] = reset_type; /* fill_cmd defaults to LUN reset */
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002200 hpsa_scsi_do_simple_cmd_core(h, c);
2201 /* no unmap needed here because no data xfer. */
2202
2203 ei = c->err_info;
2204 if (ei->CommandStatus != 0) {
Stephen M. Camerond1e8bea2014-02-18 13:57:47 -06002205 hpsa_scsi_interpret_error(h, c);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002206 rc = -1;
2207 }
2208 cmd_special_free(h, c);
2209 return rc;
2210}
2211
2212static void hpsa_get_raid_level(struct ctlr_info *h,
2213 unsigned char *scsi3addr, unsigned char *raid_level)
2214{
2215 int rc;
2216 unsigned char *buf;
2217
2218 *raid_level = RAID_UNKNOWN;
2219 buf = kzalloc(64, GFP_KERNEL);
2220 if (!buf)
2221 return;
Stephen M. Cameronb7bb24e2014-02-18 13:57:11 -06002222 rc = hpsa_scsi_do_inquiry(h, scsi3addr, VPD_PAGE | 0xC1, buf, 64);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002223 if (rc == 0)
2224 *raid_level = buf[8];
2225 if (*raid_level > RAID_UNKNOWN)
2226 *raid_level = RAID_UNKNOWN;
2227 kfree(buf);
2228 return;
2229}
2230
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06002231#define HPSA_MAP_DEBUG
2232#ifdef HPSA_MAP_DEBUG
2233static void hpsa_debug_map_buff(struct ctlr_info *h, int rc,
2234 struct raid_map_data *map_buff)
2235{
2236 struct raid_map_disk_data *dd = &map_buff->data[0];
2237 int map, row, col;
2238 u16 map_cnt, row_cnt, disks_per_row;
2239
2240 if (rc != 0)
2241 return;
2242
Stephen M. Cameron2ba8bfc2014-02-18 13:57:52 -06002243 /* Show details only if debugging has been activated. */
2244 if (h->raid_offload_debug < 2)
2245 return;
2246
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06002247 dev_info(&h->pdev->dev, "structure_size = %u\n",
2248 le32_to_cpu(map_buff->structure_size));
2249 dev_info(&h->pdev->dev, "volume_blk_size = %u\n",
2250 le32_to_cpu(map_buff->volume_blk_size));
2251 dev_info(&h->pdev->dev, "volume_blk_cnt = 0x%llx\n",
2252 le64_to_cpu(map_buff->volume_blk_cnt));
2253 dev_info(&h->pdev->dev, "physicalBlockShift = %u\n",
2254 map_buff->phys_blk_shift);
2255 dev_info(&h->pdev->dev, "parity_rotation_shift = %u\n",
2256 map_buff->parity_rotation_shift);
2257 dev_info(&h->pdev->dev, "strip_size = %u\n",
2258 le16_to_cpu(map_buff->strip_size));
2259 dev_info(&h->pdev->dev, "disk_starting_blk = 0x%llx\n",
2260 le64_to_cpu(map_buff->disk_starting_blk));
2261 dev_info(&h->pdev->dev, "disk_blk_cnt = 0x%llx\n",
2262 le64_to_cpu(map_buff->disk_blk_cnt));
2263 dev_info(&h->pdev->dev, "data_disks_per_row = %u\n",
2264 le16_to_cpu(map_buff->data_disks_per_row));
2265 dev_info(&h->pdev->dev, "metadata_disks_per_row = %u\n",
2266 le16_to_cpu(map_buff->metadata_disks_per_row));
2267 dev_info(&h->pdev->dev, "row_cnt = %u\n",
2268 le16_to_cpu(map_buff->row_cnt));
2269 dev_info(&h->pdev->dev, "layout_map_count = %u\n",
2270 le16_to_cpu(map_buff->layout_map_count));
Scott Teeldd0e19f2014-02-18 13:57:31 -06002271 dev_info(&h->pdev->dev, "flags = %u\n",
2272 le16_to_cpu(map_buff->flags));
2273 if (map_buff->flags & RAID_MAP_FLAG_ENCRYPT_ON)
2274 dev_info(&h->pdev->dev, "encrypytion = ON\n");
2275 else
2276 dev_info(&h->pdev->dev, "encrypytion = OFF\n");
2277 dev_info(&h->pdev->dev, "dekindex = %u\n",
2278 le16_to_cpu(map_buff->dekindex));
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06002279
2280 map_cnt = le16_to_cpu(map_buff->layout_map_count);
2281 for (map = 0; map < map_cnt; map++) {
2282 dev_info(&h->pdev->dev, "Map%u:\n", map);
2283 row_cnt = le16_to_cpu(map_buff->row_cnt);
2284 for (row = 0; row < row_cnt; row++) {
2285 dev_info(&h->pdev->dev, " Row%u:\n", row);
2286 disks_per_row =
2287 le16_to_cpu(map_buff->data_disks_per_row);
2288 for (col = 0; col < disks_per_row; col++, dd++)
2289 dev_info(&h->pdev->dev,
2290 " D%02u: h=0x%04x xor=%u,%u\n",
2291 col, dd->ioaccel_handle,
2292 dd->xor_mult[0], dd->xor_mult[1]);
2293 disks_per_row =
2294 le16_to_cpu(map_buff->metadata_disks_per_row);
2295 for (col = 0; col < disks_per_row; col++, dd++)
2296 dev_info(&h->pdev->dev,
2297 " M%02u: h=0x%04x xor=%u,%u\n",
2298 col, dd->ioaccel_handle,
2299 dd->xor_mult[0], dd->xor_mult[1]);
2300 }
2301 }
2302}
2303#else
2304static void hpsa_debug_map_buff(__attribute__((unused)) struct ctlr_info *h,
2305 __attribute__((unused)) int rc,
2306 __attribute__((unused)) struct raid_map_data *map_buff)
2307{
2308}
2309#endif
2310
2311static int hpsa_get_raid_map(struct ctlr_info *h,
2312 unsigned char *scsi3addr, struct hpsa_scsi_dev_t *this_device)
2313{
2314 int rc = 0;
2315 struct CommandList *c;
2316 struct ErrorInfo *ei;
2317
2318 c = cmd_special_alloc(h);
2319 if (c == NULL) {
2320 dev_warn(&h->pdev->dev, "cmd_special_alloc returned NULL!\n");
2321 return -ENOMEM;
2322 }
2323 if (fill_cmd(c, HPSA_GET_RAID_MAP, h, &this_device->raid_map,
2324 sizeof(this_device->raid_map), 0,
2325 scsi3addr, TYPE_CMD)) {
2326 dev_warn(&h->pdev->dev, "Out of memory in hpsa_get_raid_map()\n");
2327 cmd_special_free(h, c);
2328 return -ENOMEM;
2329 }
2330 hpsa_scsi_do_simple_cmd_with_retry(h, c, PCI_DMA_FROMDEVICE);
2331 ei = c->err_info;
2332 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) {
Stephen M. Camerond1e8bea2014-02-18 13:57:47 -06002333 hpsa_scsi_interpret_error(h, c);
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06002334 cmd_special_free(h, c);
2335 return -1;
2336 }
2337 cmd_special_free(h, c);
2338
2339 /* @todo in the future, dynamically allocate RAID map memory */
2340 if (le32_to_cpu(this_device->raid_map.structure_size) >
2341 sizeof(this_device->raid_map)) {
2342 dev_warn(&h->pdev->dev, "RAID map size is too large!\n");
2343 rc = -1;
2344 }
2345 hpsa_debug_map_buff(h, rc, &this_device->raid_map);
2346 return rc;
2347}
2348
Stephen M. Cameron1b70150a2014-02-18 13:57:16 -06002349static int hpsa_vpd_page_supported(struct ctlr_info *h,
2350 unsigned char scsi3addr[], u8 page)
2351{
2352 int rc;
2353 int i;
2354 int pages;
2355 unsigned char *buf, bufsize;
2356
2357 buf = kzalloc(256, GFP_KERNEL);
2358 if (!buf)
2359 return 0;
2360
2361 /* Get the size of the page list first */
2362 rc = hpsa_scsi_do_inquiry(h, scsi3addr,
2363 VPD_PAGE | HPSA_VPD_SUPPORTED_PAGES,
2364 buf, HPSA_VPD_HEADER_SZ);
2365 if (rc != 0)
2366 goto exit_unsupported;
2367 pages = buf[3];
2368 if ((pages + HPSA_VPD_HEADER_SZ) <= 255)
2369 bufsize = pages + HPSA_VPD_HEADER_SZ;
2370 else
2371 bufsize = 255;
2372
2373 /* Get the whole VPD page list */
2374 rc = hpsa_scsi_do_inquiry(h, scsi3addr,
2375 VPD_PAGE | HPSA_VPD_SUPPORTED_PAGES,
2376 buf, bufsize);
2377 if (rc != 0)
2378 goto exit_unsupported;
2379
2380 pages = buf[3];
2381 for (i = 1; i <= pages; i++)
2382 if (buf[3 + i] == page)
2383 goto exit_supported;
2384exit_unsupported:
2385 kfree(buf);
2386 return 0;
2387exit_supported:
2388 kfree(buf);
2389 return 1;
2390}
2391
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06002392static void hpsa_get_ioaccel_status(struct ctlr_info *h,
2393 unsigned char *scsi3addr, struct hpsa_scsi_dev_t *this_device)
2394{
2395 int rc;
2396 unsigned char *buf;
2397 u8 ioaccel_status;
2398
2399 this_device->offload_config = 0;
2400 this_device->offload_enabled = 0;
2401
2402 buf = kzalloc(64, GFP_KERNEL);
2403 if (!buf)
2404 return;
Stephen M. Cameron1b70150a2014-02-18 13:57:16 -06002405 if (!hpsa_vpd_page_supported(h, scsi3addr, HPSA_VPD_LV_IOACCEL_STATUS))
2406 goto out;
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06002407 rc = hpsa_scsi_do_inquiry(h, scsi3addr,
Stephen M. Cameronb7bb24e2014-02-18 13:57:11 -06002408 VPD_PAGE | HPSA_VPD_LV_IOACCEL_STATUS, buf, 64);
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06002409 if (rc != 0)
2410 goto out;
2411
2412#define IOACCEL_STATUS_BYTE 4
2413#define OFFLOAD_CONFIGURED_BIT 0x01
2414#define OFFLOAD_ENABLED_BIT 0x02
2415 ioaccel_status = buf[IOACCEL_STATUS_BYTE];
2416 this_device->offload_config =
2417 !!(ioaccel_status & OFFLOAD_CONFIGURED_BIT);
2418 if (this_device->offload_config) {
2419 this_device->offload_enabled =
2420 !!(ioaccel_status & OFFLOAD_ENABLED_BIT);
2421 if (hpsa_get_raid_map(h, scsi3addr, this_device))
2422 this_device->offload_enabled = 0;
2423 }
2424out:
2425 kfree(buf);
2426 return;
2427}
2428
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002429/* Get the device id from inquiry page 0x83 */
2430static int hpsa_get_device_id(struct ctlr_info *h, unsigned char *scsi3addr,
2431 unsigned char *device_id, int buflen)
2432{
2433 int rc;
2434 unsigned char *buf;
2435
2436 if (buflen > 16)
2437 buflen = 16;
2438 buf = kzalloc(64, GFP_KERNEL);
2439 if (!buf)
2440 return -1;
Stephen M. Cameronb7bb24e2014-02-18 13:57:11 -06002441 rc = hpsa_scsi_do_inquiry(h, scsi3addr, VPD_PAGE | 0x83, buf, 64);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002442 if (rc == 0)
2443 memcpy(device_id, &buf[8], buflen);
2444 kfree(buf);
2445 return rc != 0;
2446}
2447
2448static int hpsa_scsi_do_report_luns(struct ctlr_info *h, int logical,
2449 struct ReportLUNdata *buf, int bufsize,
2450 int extended_response)
2451{
2452 int rc = IO_OK;
2453 struct CommandList *c;
2454 unsigned char scsi3addr[8];
2455 struct ErrorInfo *ei;
2456
2457 c = cmd_special_alloc(h);
2458 if (c == NULL) { /* trouble... */
2459 dev_err(&h->pdev->dev, "cmd_special_alloc returned NULL!\n");
2460 return -1;
2461 }
Stephen M. Camerone89c0ae2010-02-04 08:42:04 -06002462 /* address the controller */
2463 memset(scsi3addr, 0, sizeof(scsi3addr));
Stephen M. Camerona2dac132013-02-20 11:24:41 -06002464 if (fill_cmd(c, logical ? HPSA_REPORT_LOG : HPSA_REPORT_PHYS, h,
2465 buf, bufsize, 0, scsi3addr, TYPE_CMD)) {
2466 rc = -1;
2467 goto out;
2468 }
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002469 if (extended_response)
2470 c->Request.CDB[1] = extended_response;
2471 hpsa_scsi_do_simple_cmd_with_retry(h, c, PCI_DMA_FROMDEVICE);
2472 ei = c->err_info;
2473 if (ei->CommandStatus != 0 &&
2474 ei->CommandStatus != CMD_DATA_UNDERRUN) {
Stephen M. Camerond1e8bea2014-02-18 13:57:47 -06002475 hpsa_scsi_interpret_error(h, c);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002476 rc = -1;
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06002477 } else {
2478 if (buf->extended_response_flag != extended_response) {
2479 dev_err(&h->pdev->dev,
2480 "report luns requested format %u, got %u\n",
2481 extended_response,
2482 buf->extended_response_flag);
2483 rc = -1;
2484 }
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002485 }
Stephen M. Camerona2dac132013-02-20 11:24:41 -06002486out:
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002487 cmd_special_free(h, c);
2488 return rc;
2489}
2490
2491static inline int hpsa_scsi_do_report_phys_luns(struct ctlr_info *h,
2492 struct ReportLUNdata *buf,
2493 int bufsize, int extended_response)
2494{
2495 return hpsa_scsi_do_report_luns(h, 0, buf, bufsize, extended_response);
2496}
2497
2498static inline int hpsa_scsi_do_report_log_luns(struct ctlr_info *h,
2499 struct ReportLUNdata *buf, int bufsize)
2500{
2501 return hpsa_scsi_do_report_luns(h, 1, buf, bufsize, 0);
2502}
2503
2504static inline void hpsa_set_bus_target_lun(struct hpsa_scsi_dev_t *device,
2505 int bus, int target, int lun)
2506{
2507 device->bus = bus;
2508 device->target = target;
2509 device->lun = lun;
2510}
2511
Stephen M. Cameron98465902014-02-21 16:25:00 -06002512/* Use VPD inquiry to get details of volume status */
2513static int hpsa_get_volume_status(struct ctlr_info *h,
2514 unsigned char scsi3addr[])
2515{
2516 int rc;
2517 int status;
2518 int size;
2519 unsigned char *buf;
2520
2521 buf = kzalloc(64, GFP_KERNEL);
2522 if (!buf)
2523 return HPSA_VPD_LV_STATUS_UNSUPPORTED;
2524
2525 /* Does controller have VPD for logical volume status? */
2526 if (!hpsa_vpd_page_supported(h, scsi3addr, HPSA_VPD_LV_STATUS)) {
2527 dev_warn(&h->pdev->dev, "Logical volume status VPD page is unsupported.\n");
2528 goto exit_failed;
2529 }
2530
2531 /* Get the size of the VPD return buffer */
2532 rc = hpsa_scsi_do_inquiry(h, scsi3addr, VPD_PAGE | HPSA_VPD_LV_STATUS,
2533 buf, HPSA_VPD_HEADER_SZ);
2534 if (rc != 0) {
2535 dev_warn(&h->pdev->dev, "Logical volume status VPD inquiry failed.\n");
2536 goto exit_failed;
2537 }
2538 size = buf[3];
2539
2540 /* Now get the whole VPD buffer */
2541 rc = hpsa_scsi_do_inquiry(h, scsi3addr, VPD_PAGE | HPSA_VPD_LV_STATUS,
2542 buf, size + HPSA_VPD_HEADER_SZ);
2543 if (rc != 0) {
2544 dev_warn(&h->pdev->dev, "Logical volume status VPD inquiry failed.\n");
2545 goto exit_failed;
2546 }
2547 status = buf[4]; /* status byte */
2548
2549 kfree(buf);
2550 return status;
2551exit_failed:
2552 kfree(buf);
2553 return HPSA_VPD_LV_STATUS_UNSUPPORTED;
2554}
2555
2556/* Determine offline status of a volume.
2557 * Return either:
2558 * 0 (not offline)
2559 * -1 (offline for unknown reasons)
2560 * # (integer code indicating one of several NOT READY states
2561 * describing why a volume is to be kept offline)
2562 */
2563static unsigned char hpsa_volume_offline(struct ctlr_info *h,
2564 unsigned char scsi3addr[])
2565{
2566 struct CommandList *c;
2567 unsigned char *sense, sense_key, asc, ascq;
2568 int ldstat = 0;
2569 u16 cmd_status;
2570 u8 scsi_status;
2571#define ASC_LUN_NOT_READY 0x04
2572#define ASCQ_LUN_NOT_READY_FORMAT_IN_PROGRESS 0x04
2573#define ASCQ_LUN_NOT_READY_INITIALIZING_CMD_REQ 0x02
2574
2575 c = cmd_alloc(h);
2576 if (!c)
2577 return 0;
2578 (void) fill_cmd(c, TEST_UNIT_READY, h, NULL, 0, 0, scsi3addr, TYPE_CMD);
2579 hpsa_scsi_do_simple_cmd_core(h, c);
2580 sense = c->err_info->SenseInfo;
2581 sense_key = sense[2];
2582 asc = sense[12];
2583 ascq = sense[13];
2584 cmd_status = c->err_info->CommandStatus;
2585 scsi_status = c->err_info->ScsiStatus;
2586 cmd_free(h, c);
2587 /* Is the volume 'not ready'? */
2588 if (cmd_status != CMD_TARGET_STATUS ||
2589 scsi_status != SAM_STAT_CHECK_CONDITION ||
2590 sense_key != NOT_READY ||
2591 asc != ASC_LUN_NOT_READY) {
2592 return 0;
2593 }
2594
2595 /* Determine the reason for not ready state */
2596 ldstat = hpsa_get_volume_status(h, scsi3addr);
2597
2598 /* Keep volume offline in certain cases: */
2599 switch (ldstat) {
2600 case HPSA_LV_UNDERGOING_ERASE:
2601 case HPSA_LV_UNDERGOING_RPI:
2602 case HPSA_LV_PENDING_RPI:
2603 case HPSA_LV_ENCRYPTED_NO_KEY:
2604 case HPSA_LV_PLAINTEXT_IN_ENCRYPT_ONLY_CONTROLLER:
2605 case HPSA_LV_UNDERGOING_ENCRYPTION:
2606 case HPSA_LV_UNDERGOING_ENCRYPTION_REKEYING:
2607 case HPSA_LV_ENCRYPTED_IN_NON_ENCRYPTED_CONTROLLER:
2608 return ldstat;
2609 case HPSA_VPD_LV_STATUS_UNSUPPORTED:
2610 /* If VPD status page isn't available,
2611 * use ASC/ASCQ to determine state
2612 */
2613 if ((ascq == ASCQ_LUN_NOT_READY_FORMAT_IN_PROGRESS) ||
2614 (ascq == ASCQ_LUN_NOT_READY_INITIALIZING_CMD_REQ))
2615 return ldstat;
2616 break;
2617 default:
2618 break;
2619 }
2620 return 0;
2621}
2622
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002623static int hpsa_update_device_info(struct ctlr_info *h,
Stephen M. Cameron0b0e1d62011-08-09 08:17:30 -05002624 unsigned char scsi3addr[], struct hpsa_scsi_dev_t *this_device,
2625 unsigned char *is_OBDR_device)
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002626{
Stephen M. Cameron0b0e1d62011-08-09 08:17:30 -05002627
2628#define OBDR_SIG_OFFSET 43
2629#define OBDR_TAPE_SIG "$DR-10"
2630#define OBDR_SIG_LEN (sizeof(OBDR_TAPE_SIG) - 1)
2631#define OBDR_TAPE_INQ_SIZE (OBDR_SIG_OFFSET + OBDR_SIG_LEN)
2632
Stephen M. Cameronea6d3bc2010-02-04 08:42:09 -06002633 unsigned char *inq_buff;
Stephen M. Cameron0b0e1d62011-08-09 08:17:30 -05002634 unsigned char *obdr_sig;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002635
Stephen M. Cameronea6d3bc2010-02-04 08:42:09 -06002636 inq_buff = kzalloc(OBDR_TAPE_INQ_SIZE, GFP_KERNEL);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002637 if (!inq_buff)
2638 goto bail_out;
2639
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002640 /* Do an inquiry to the device to see what it is. */
2641 if (hpsa_scsi_do_inquiry(h, scsi3addr, 0, inq_buff,
2642 (unsigned char) OBDR_TAPE_INQ_SIZE) != 0) {
2643 /* Inquiry failed (msg printed already) */
2644 dev_err(&h->pdev->dev,
2645 "hpsa_update_device_info: inquiry failed\n");
2646 goto bail_out;
2647 }
2648
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002649 this_device->devtype = (inq_buff[0] & 0x1f);
2650 memcpy(this_device->scsi3addr, scsi3addr, 8);
2651 memcpy(this_device->vendor, &inq_buff[8],
2652 sizeof(this_device->vendor));
2653 memcpy(this_device->model, &inq_buff[16],
2654 sizeof(this_device->model));
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002655 memset(this_device->device_id, 0,
2656 sizeof(this_device->device_id));
2657 hpsa_get_device_id(h, scsi3addr, this_device->device_id,
2658 sizeof(this_device->device_id));
2659
2660 if (this_device->devtype == TYPE_DISK &&
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06002661 is_logical_dev_addr_mode(scsi3addr)) {
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002662 hpsa_get_raid_level(h, scsi3addr, &this_device->raid_level);
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06002663 if (h->fw_support & MISC_FW_RAID_OFFLOAD_BASIC)
2664 hpsa_get_ioaccel_status(h, scsi3addr, this_device);
Stephen M. Cameron98465902014-02-21 16:25:00 -06002665 this_device->volume_offline =
2666 hpsa_volume_offline(h, scsi3addr);
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06002667 } else {
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002668 this_device->raid_level = RAID_UNKNOWN;
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06002669 this_device->offload_config = 0;
2670 this_device->offload_enabled = 0;
Stephen M. Cameron98465902014-02-21 16:25:00 -06002671 this_device->volume_offline = 0;
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06002672 }
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002673
Stephen M. Cameron0b0e1d62011-08-09 08:17:30 -05002674 if (is_OBDR_device) {
2675 /* See if this is a One-Button-Disaster-Recovery device
2676 * by looking for "$DR-10" at offset 43 in inquiry data.
2677 */
2678 obdr_sig = &inq_buff[OBDR_SIG_OFFSET];
2679 *is_OBDR_device = (this_device->devtype == TYPE_ROM &&
2680 strncmp(obdr_sig, OBDR_TAPE_SIG,
2681 OBDR_SIG_LEN) == 0);
2682 }
2683
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002684 kfree(inq_buff);
2685 return 0;
2686
2687bail_out:
2688 kfree(inq_buff);
2689 return 1;
2690}
2691
Scott Teel4f4eb9f2012-01-19 14:01:25 -06002692static unsigned char *ext_target_model[] = {
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002693 "MSA2012",
2694 "MSA2024",
2695 "MSA2312",
2696 "MSA2324",
Stephen M. Cameronfda38512011-05-03 15:00:07 -05002697 "P2000 G3 SAS",
Stephen M. Camerone06c8e52013-09-23 13:33:56 -05002698 "MSA 2040 SAS",
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002699 NULL,
2700};
2701
Scott Teel4f4eb9f2012-01-19 14:01:25 -06002702static int is_ext_target(struct ctlr_info *h, struct hpsa_scsi_dev_t *device)
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002703{
2704 int i;
2705
Scott Teel4f4eb9f2012-01-19 14:01:25 -06002706 for (i = 0; ext_target_model[i]; i++)
2707 if (strncmp(device->model, ext_target_model[i],
2708 strlen(ext_target_model[i])) == 0)
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002709 return 1;
2710 return 0;
2711}
2712
2713/* Helper function to assign bus, target, lun mapping of devices.
Scott Teel4f4eb9f2012-01-19 14:01:25 -06002714 * Puts non-external target logical volumes on bus 0, external target logical
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002715 * volumes on bus 1, physical devices on bus 2. and the hba on bus 3.
2716 * Logical drive target and lun are assigned at this time, but
2717 * physical device lun and target assignment are deferred (assigned
2718 * in hpsa_find_target_lun, called by hpsa_scsi_add_entry.)
2719 */
2720static void figure_bus_target_lun(struct ctlr_info *h,
Stephen M. Cameron1f310bd2012-01-19 14:01:14 -06002721 u8 *lunaddrbytes, struct hpsa_scsi_dev_t *device)
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002722{
Stephen M. Cameron1f310bd2012-01-19 14:01:14 -06002723 u32 lunid = le32_to_cpu(*((__le32 *) lunaddrbytes));
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002724
Stephen M. Cameron1f310bd2012-01-19 14:01:14 -06002725 if (!is_logical_dev_addr_mode(lunaddrbytes)) {
2726 /* physical device, target and lun filled in later */
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002727 if (is_hba_lunid(lunaddrbytes))
Stephen M. Cameron1f310bd2012-01-19 14:01:14 -06002728 hpsa_set_bus_target_lun(device, 3, 0, lunid & 0x3fff);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002729 else
Stephen M. Cameron1f310bd2012-01-19 14:01:14 -06002730 /* defer target, lun assignment for physical devices */
2731 hpsa_set_bus_target_lun(device, 2, -1, -1);
2732 return;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002733 }
Stephen M. Cameron1f310bd2012-01-19 14:01:14 -06002734 /* It's a logical device */
Scott Teel4f4eb9f2012-01-19 14:01:25 -06002735 if (is_ext_target(h, device)) {
2736 /* external target way, put logicals on bus 1
Stephen M. Cameron1f310bd2012-01-19 14:01:14 -06002737 * and match target/lun numbers box
2738 * reports, other smart array, bus 0, target 0, match lunid
2739 */
2740 hpsa_set_bus_target_lun(device,
2741 1, (lunid >> 16) & 0x3fff, lunid & 0x00ff);
2742 return;
2743 }
2744 hpsa_set_bus_target_lun(device, 0, 0, lunid & 0x3fff);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002745}
2746
2747/*
2748 * If there is no lun 0 on a target, linux won't find any devices.
Scott Teel4f4eb9f2012-01-19 14:01:25 -06002749 * For the external targets (arrays), we have to manually detect the enclosure
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002750 * which is at lun zero, as CCISS_REPORT_PHYSICAL_LUNS doesn't report
2751 * it for some reason. *tmpdevice is the target we're adding,
2752 * this_device is a pointer into the current element of currentsd[]
2753 * that we're building up in update_scsi_devices(), below.
2754 * lunzerobits is a bitmap that tracks which targets already have a
2755 * lun 0 assigned.
2756 * Returns 1 if an enclosure was added, 0 if not.
2757 */
Scott Teel4f4eb9f2012-01-19 14:01:25 -06002758static int add_ext_target_dev(struct ctlr_info *h,
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002759 struct hpsa_scsi_dev_t *tmpdevice,
Stephen M. Cameron01a02ff2010-02-04 08:41:33 -06002760 struct hpsa_scsi_dev_t *this_device, u8 *lunaddrbytes,
Scott Teel4f4eb9f2012-01-19 14:01:25 -06002761 unsigned long lunzerobits[], int *n_ext_target_devs)
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002762{
2763 unsigned char scsi3addr[8];
2764
Stephen M. Cameron1f310bd2012-01-19 14:01:14 -06002765 if (test_bit(tmpdevice->target, lunzerobits))
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002766 return 0; /* There is already a lun 0 on this target. */
2767
2768 if (!is_logical_dev_addr_mode(lunaddrbytes))
2769 return 0; /* It's the logical targets that may lack lun 0. */
2770
Scott Teel4f4eb9f2012-01-19 14:01:25 -06002771 if (!is_ext_target(h, tmpdevice))
2772 return 0; /* Only external target devices have this problem. */
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002773
Stephen M. Cameron1f310bd2012-01-19 14:01:14 -06002774 if (tmpdevice->lun == 0) /* if lun is 0, then we have a lun 0. */
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002775 return 0;
2776
Stephen M. Cameronc4f8a292011-01-07 10:55:43 -06002777 memset(scsi3addr, 0, 8);
Stephen M. Cameron1f310bd2012-01-19 14:01:14 -06002778 scsi3addr[3] = tmpdevice->target;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002779 if (is_hba_lunid(scsi3addr))
2780 return 0; /* Don't add the RAID controller here. */
2781
Stephen M. Cameron339b2b12010-02-04 08:42:50 -06002782 if (is_scsi_rev_5(h))
2783 return 0; /* p1210m doesn't need to do this. */
2784
Scott Teel4f4eb9f2012-01-19 14:01:25 -06002785 if (*n_ext_target_devs >= MAX_EXT_TARGETS) {
Scott Teelaca4a522012-01-19 14:01:19 -06002786 dev_warn(&h->pdev->dev, "Maximum number of external "
2787 "target devices exceeded. Check your hardware "
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002788 "configuration.");
2789 return 0;
2790 }
2791
Stephen M. Cameron0b0e1d62011-08-09 08:17:30 -05002792 if (hpsa_update_device_info(h, scsi3addr, this_device, NULL))
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002793 return 0;
Scott Teel4f4eb9f2012-01-19 14:01:25 -06002794 (*n_ext_target_devs)++;
Stephen M. Cameron1f310bd2012-01-19 14:01:14 -06002795 hpsa_set_bus_target_lun(this_device,
2796 tmpdevice->bus, tmpdevice->target, 0);
2797 set_bit(tmpdevice->target, lunzerobits);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002798 return 1;
2799}
2800
2801/*
Scott Teel54b6e9e2014-02-18 13:56:45 -06002802 * Get address of physical disk used for an ioaccel2 mode command:
2803 * 1. Extract ioaccel2 handle from the command.
2804 * 2. Find a matching ioaccel2 handle from list of physical disks.
2805 * 3. Return:
2806 * 1 and set scsi3addr to address of matching physical
2807 * 0 if no matching physical disk was found.
2808 */
2809static int hpsa_get_pdisk_of_ioaccel2(struct ctlr_info *h,
2810 struct CommandList *ioaccel2_cmd_to_abort, unsigned char *scsi3addr)
2811{
2812 struct ReportExtendedLUNdata *physicals = NULL;
2813 int responsesize = 24; /* size of physical extended response */
2814 int extended = 2; /* flag forces reporting 'other dev info'. */
2815 int reportsize = sizeof(*physicals) + HPSA_MAX_PHYS_LUN * responsesize;
2816 u32 nphysicals = 0; /* number of reported physical devs */
2817 int found = 0; /* found match (1) or not (0) */
2818 u32 find; /* handle we need to match */
2819 int i;
2820 struct scsi_cmnd *scmd; /* scsi command within request being aborted */
2821 struct hpsa_scsi_dev_t *d; /* device of request being aborted */
2822 struct io_accel2_cmd *c2a; /* ioaccel2 command to abort */
2823 u32 it_nexus; /* 4 byte device handle for the ioaccel2 cmd */
2824 u32 scsi_nexus; /* 4 byte device handle for the ioaccel2 cmd */
2825
2826 if (ioaccel2_cmd_to_abort->cmd_type != CMD_IOACCEL2)
2827 return 0; /* no match */
2828
2829 /* point to the ioaccel2 device handle */
2830 c2a = &h->ioaccel2_cmd_pool[ioaccel2_cmd_to_abort->cmdindex];
2831 if (c2a == NULL)
2832 return 0; /* no match */
2833
2834 scmd = (struct scsi_cmnd *) ioaccel2_cmd_to_abort->scsi_cmd;
2835 if (scmd == NULL)
2836 return 0; /* no match */
2837
2838 d = scmd->device->hostdata;
2839 if (d == NULL)
2840 return 0; /* no match */
2841
2842 it_nexus = cpu_to_le32((u32) d->ioaccel_handle);
2843 scsi_nexus = cpu_to_le32((u32) c2a->scsi_nexus);
2844 find = c2a->scsi_nexus;
2845
Stephen M. Cameron2ba8bfc2014-02-18 13:57:52 -06002846 if (h->raid_offload_debug > 0)
2847 dev_info(&h->pdev->dev,
2848 "%s: scsi_nexus:0x%08x device id: 0x%02x%02x%02x%02x %02x%02x%02x%02x %02x%02x%02x%02x %02x%02x%02x%02x\n",
2849 __func__, scsi_nexus,
2850 d->device_id[0], d->device_id[1], d->device_id[2],
2851 d->device_id[3], d->device_id[4], d->device_id[5],
2852 d->device_id[6], d->device_id[7], d->device_id[8],
2853 d->device_id[9], d->device_id[10], d->device_id[11],
2854 d->device_id[12], d->device_id[13], d->device_id[14],
2855 d->device_id[15]);
2856
Scott Teel54b6e9e2014-02-18 13:56:45 -06002857 /* Get the list of physical devices */
2858 physicals = kzalloc(reportsize, GFP_KERNEL);
Joe Handzik3b51a7a2014-03-26 17:48:11 -05002859 if (physicals == NULL)
2860 return 0;
Scott Teel54b6e9e2014-02-18 13:56:45 -06002861 if (hpsa_scsi_do_report_phys_luns(h, (struct ReportLUNdata *) physicals,
2862 reportsize, extended)) {
2863 dev_err(&h->pdev->dev,
2864 "Can't lookup %s device handle: report physical LUNs failed.\n",
2865 "HP SSD Smart Path");
2866 kfree(physicals);
2867 return 0;
2868 }
2869 nphysicals = be32_to_cpu(*((__be32 *)physicals->LUNListLength)) /
2870 responsesize;
2871
Scott Teel54b6e9e2014-02-18 13:56:45 -06002872 /* find ioaccel2 handle in list of physicals: */
2873 for (i = 0; i < nphysicals; i++) {
Stephen M. Camerond5b5d962014-05-29 10:53:34 -05002874 struct ext_report_lun_entry *entry = &physicals->LUN[i];
2875
Scott Teel54b6e9e2014-02-18 13:56:45 -06002876 /* handle is in bytes 28-31 of each lun */
Stephen M. Camerond5b5d962014-05-29 10:53:34 -05002877 if (entry->ioaccel_handle != find)
Scott Teel54b6e9e2014-02-18 13:56:45 -06002878 continue; /* didn't match */
Scott Teel54b6e9e2014-02-18 13:56:45 -06002879 found = 1;
Stephen M. Camerond5b5d962014-05-29 10:53:34 -05002880 memcpy(scsi3addr, entry->lunid, 8);
Stephen M. Cameron2ba8bfc2014-02-18 13:57:52 -06002881 if (h->raid_offload_debug > 0)
2882 dev_info(&h->pdev->dev,
Stephen M. Camerond5b5d962014-05-29 10:53:34 -05002883 "%s: Searched h=0x%08x, Found h=0x%08x, scsiaddr 0x%8phN\n",
Stephen M. Cameron2ba8bfc2014-02-18 13:57:52 -06002884 __func__, find,
Stephen M. Camerond5b5d962014-05-29 10:53:34 -05002885 entry->ioaccel_handle, scsi3addr);
Scott Teel54b6e9e2014-02-18 13:56:45 -06002886 break; /* found it */
2887 }
2888
2889 kfree(physicals);
2890 if (found)
2891 return 1;
2892 else
2893 return 0;
2894
2895}
2896/*
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002897 * Do CISS_REPORT_PHYS and CISS_REPORT_LOG. Data is returned in physdev,
2898 * logdev. The number of luns in physdev and logdev are returned in
2899 * *nphysicals and *nlogicals, respectively.
2900 * Returns 0 on success, -1 otherwise.
2901 */
2902static int hpsa_gather_lun_info(struct ctlr_info *h,
2903 int reportlunsize,
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06002904 struct ReportLUNdata *physdev, u32 *nphysicals, int *physical_mode,
Stephen M. Cameron01a02ff2010-02-04 08:41:33 -06002905 struct ReportLUNdata *logdev, u32 *nlogicals)
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002906{
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06002907 int physical_entry_size = 8;
2908
2909 *physical_mode = 0;
2910
2911 /* For I/O accelerator mode we need to read physical device handles */
Mike MIller317d4ad2014-02-18 13:56:20 -06002912 if (h->transMethod & CFGTBL_Trans_io_accel1 ||
2913 h->transMethod & CFGTBL_Trans_io_accel2) {
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06002914 *physical_mode = HPSA_REPORT_PHYS_EXTENDED;
2915 physical_entry_size = 24;
2916 }
Matt Gatesa93aa1f2014-02-18 13:55:07 -06002917 if (hpsa_scsi_do_report_phys_luns(h, physdev, reportlunsize,
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06002918 *physical_mode)) {
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002919 dev_err(&h->pdev->dev, "report physical LUNs failed.\n");
2920 return -1;
2921 }
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06002922 *nphysicals = be32_to_cpu(*((__be32 *)physdev->LUNListLength)) /
2923 physical_entry_size;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002924 if (*nphysicals > HPSA_MAX_PHYS_LUN) {
2925 dev_warn(&h->pdev->dev, "maximum physical LUNs (%d) exceeded."
2926 " %d LUNs ignored.\n", HPSA_MAX_PHYS_LUN,
2927 *nphysicals - HPSA_MAX_PHYS_LUN);
2928 *nphysicals = HPSA_MAX_PHYS_LUN;
2929 }
2930 if (hpsa_scsi_do_report_log_luns(h, logdev, reportlunsize)) {
2931 dev_err(&h->pdev->dev, "report logical LUNs failed.\n");
2932 return -1;
2933 }
Stephen M. Cameron6df1e952010-02-04 08:42:19 -06002934 *nlogicals = be32_to_cpu(*((__be32 *) logdev->LUNListLength)) / 8;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002935 /* Reject Logicals in excess of our max capability. */
2936 if (*nlogicals > HPSA_MAX_LUN) {
2937 dev_warn(&h->pdev->dev,
2938 "maximum logical LUNs (%d) exceeded. "
2939 "%d LUNs ignored.\n", HPSA_MAX_LUN,
2940 *nlogicals - HPSA_MAX_LUN);
2941 *nlogicals = HPSA_MAX_LUN;
2942 }
2943 if (*nlogicals + *nphysicals > HPSA_MAX_PHYS_LUN) {
2944 dev_warn(&h->pdev->dev,
2945 "maximum logical + physical LUNs (%d) exceeded. "
2946 "%d LUNs ignored.\n", HPSA_MAX_PHYS_LUN,
2947 *nphysicals + *nlogicals - HPSA_MAX_PHYS_LUN);
2948 *nlogicals = HPSA_MAX_PHYS_LUN - *nphysicals;
2949 }
2950 return 0;
2951}
2952
Stephen M. Cameron339b2b12010-02-04 08:42:50 -06002953u8 *figure_lunaddrbytes(struct ctlr_info *h, int raid_ctlr_position, int i,
Matt Gatesa93aa1f2014-02-18 13:55:07 -06002954 int nphysicals, int nlogicals,
2955 struct ReportExtendedLUNdata *physdev_list,
Stephen M. Cameron339b2b12010-02-04 08:42:50 -06002956 struct ReportLUNdata *logdev_list)
2957{
2958 /* Helper function, figure out where the LUN ID info is coming from
2959 * given index i, lists of physical and logical devices, where in
2960 * the list the raid controller is supposed to appear (first or last)
2961 */
2962
2963 int logicals_start = nphysicals + (raid_ctlr_position == 0);
2964 int last_device = nphysicals + nlogicals + (raid_ctlr_position == 0);
2965
2966 if (i == raid_ctlr_position)
2967 return RAID_CTLR_LUNID;
2968
2969 if (i < logicals_start)
Stephen M. Camerond5b5d962014-05-29 10:53:34 -05002970 return &physdev_list->LUN[i -
2971 (raid_ctlr_position == 0)].lunid[0];
Stephen M. Cameron339b2b12010-02-04 08:42:50 -06002972
2973 if (i < last_device)
2974 return &logdev_list->LUN[i - nphysicals -
2975 (raid_ctlr_position == 0)][0];
2976 BUG();
2977 return NULL;
2978}
2979
Stephen M. Cameron316b2212014-02-21 16:25:15 -06002980static int hpsa_hba_mode_enabled(struct ctlr_info *h)
2981{
2982 int rc;
Joe Handzik6e8e8082014-05-15 15:44:42 -05002983 int hba_mode_enabled;
Stephen M. Cameron316b2212014-02-21 16:25:15 -06002984 struct bmic_controller_parameters *ctlr_params;
2985 ctlr_params = kzalloc(sizeof(struct bmic_controller_parameters),
2986 GFP_KERNEL);
2987
2988 if (!ctlr_params)
Joe Handzik96444fb2014-05-15 15:44:47 -05002989 return -ENOMEM;
Stephen M. Cameron316b2212014-02-21 16:25:15 -06002990 rc = hpsa_bmic_ctrl_mode_sense(h, RAID_CTLR_LUNID, 0, ctlr_params,
2991 sizeof(struct bmic_controller_parameters));
Joe Handzik96444fb2014-05-15 15:44:47 -05002992 if (rc) {
Stephen M. Cameron316b2212014-02-21 16:25:15 -06002993 kfree(ctlr_params);
Joe Handzik96444fb2014-05-15 15:44:47 -05002994 return rc;
Stephen M. Cameron316b2212014-02-21 16:25:15 -06002995 }
Joe Handzik6e8e8082014-05-15 15:44:42 -05002996
2997 hba_mode_enabled =
2998 ((ctlr_params->nvram_flags & HBA_MODE_ENABLED_FLAG) != 0);
2999 kfree(ctlr_params);
3000 return hba_mode_enabled;
Stephen M. Cameron316b2212014-02-21 16:25:15 -06003001}
3002
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003003static void hpsa_update_scsi_devices(struct ctlr_info *h, int hostno)
3004{
3005 /* the idea here is we could get notified
3006 * that some devices have changed, so we do a report
3007 * physical luns and report logical luns cmd, and adjust
3008 * our list of devices accordingly.
3009 *
3010 * The scsi3addr's of devices won't change so long as the
3011 * adapter is not reset. That means we can rescan and
3012 * tell which devices we already know about, vs. new
3013 * devices, vs. disappearing devices.
3014 */
Matt Gatesa93aa1f2014-02-18 13:55:07 -06003015 struct ReportExtendedLUNdata *physdev_list = NULL;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003016 struct ReportLUNdata *logdev_list = NULL;
Stephen M. Cameron01a02ff2010-02-04 08:41:33 -06003017 u32 nphysicals = 0;
3018 u32 nlogicals = 0;
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06003019 int physical_mode = 0;
Stephen M. Cameron01a02ff2010-02-04 08:41:33 -06003020 u32 ndev_allocated = 0;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003021 struct hpsa_scsi_dev_t **currentsd, *this_device, *tmpdevice;
3022 int ncurrent = 0;
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06003023 int reportlunsize = sizeof(*physdev_list) + HPSA_MAX_PHYS_LUN * 24;
Scott Teel4f4eb9f2012-01-19 14:01:25 -06003024 int i, n_ext_target_devs, ndevs_to_allocate;
Stephen M. Cameron339b2b12010-02-04 08:42:50 -06003025 int raid_ctlr_position;
Joe Handzik2bbf5c72014-05-21 11:16:01 -05003026 int rescan_hba_mode;
Scott Teelaca4a522012-01-19 14:01:19 -06003027 DECLARE_BITMAP(lunzerobits, MAX_EXT_TARGETS);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003028
Scott Teelcfe5bad2011-10-26 16:21:07 -05003029 currentsd = kzalloc(sizeof(*currentsd) * HPSA_MAX_DEVICES, GFP_KERNEL);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003030 physdev_list = kzalloc(reportlunsize, GFP_KERNEL);
3031 logdev_list = kzalloc(reportlunsize, GFP_KERNEL);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003032 tmpdevice = kzalloc(sizeof(*tmpdevice), GFP_KERNEL);
3033
Stephen M. Cameron0b0e1d62011-08-09 08:17:30 -05003034 if (!currentsd || !physdev_list || !logdev_list || !tmpdevice) {
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003035 dev_err(&h->pdev->dev, "out of memory\n");
3036 goto out;
3037 }
3038 memset(lunzerobits, 0, sizeof(lunzerobits));
3039
Stephen M. Cameron316b2212014-02-21 16:25:15 -06003040 rescan_hba_mode = hpsa_hba_mode_enabled(h);
Joe Handzik96444fb2014-05-15 15:44:47 -05003041 if (rescan_hba_mode < 0)
3042 goto out;
Stephen M. Cameron316b2212014-02-21 16:25:15 -06003043
3044 if (!h->hba_mode_enabled && rescan_hba_mode)
3045 dev_warn(&h->pdev->dev, "HBA mode enabled\n");
3046 else if (h->hba_mode_enabled && !rescan_hba_mode)
3047 dev_warn(&h->pdev->dev, "HBA mode disabled\n");
3048
3049 h->hba_mode_enabled = rescan_hba_mode;
3050
Matt Gatesa93aa1f2014-02-18 13:55:07 -06003051 if (hpsa_gather_lun_info(h, reportlunsize,
3052 (struct ReportLUNdata *) physdev_list, &nphysicals,
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06003053 &physical_mode, logdev_list, &nlogicals))
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003054 goto out;
3055
Scott Teelaca4a522012-01-19 14:01:19 -06003056 /* We might see up to the maximum number of logical and physical disks
3057 * plus external target devices, and a device for the local RAID
3058 * controller.
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003059 */
Scott Teelaca4a522012-01-19 14:01:19 -06003060 ndevs_to_allocate = nphysicals + nlogicals + MAX_EXT_TARGETS + 1;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003061
3062 /* Allocate the per device structures */
3063 for (i = 0; i < ndevs_to_allocate; i++) {
Scott Teelb7ec0212011-10-26 16:21:12 -05003064 if (i >= HPSA_MAX_DEVICES) {
3065 dev_warn(&h->pdev->dev, "maximum devices (%d) exceeded."
3066 " %d devices ignored.\n", HPSA_MAX_DEVICES,
3067 ndevs_to_allocate - HPSA_MAX_DEVICES);
3068 break;
3069 }
3070
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003071 currentsd[i] = kzalloc(sizeof(*currentsd[i]), GFP_KERNEL);
3072 if (!currentsd[i]) {
3073 dev_warn(&h->pdev->dev, "out of memory at %s:%d\n",
3074 __FILE__, __LINE__);
3075 goto out;
3076 }
3077 ndev_allocated++;
3078 }
3079
Stephen M. Cameron339b2b12010-02-04 08:42:50 -06003080 if (unlikely(is_scsi_rev_5(h)))
3081 raid_ctlr_position = 0;
3082 else
3083 raid_ctlr_position = nphysicals + nlogicals;
3084
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003085 /* adjust our table of devices */
Scott Teel4f4eb9f2012-01-19 14:01:25 -06003086 n_ext_target_devs = 0;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003087 for (i = 0; i < nphysicals + nlogicals + 1; i++) {
Stephen M. Cameron0b0e1d62011-08-09 08:17:30 -05003088 u8 *lunaddrbytes, is_OBDR = 0;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003089
3090 /* Figure out where the LUN ID info is coming from */
Stephen M. Cameron339b2b12010-02-04 08:42:50 -06003091 lunaddrbytes = figure_lunaddrbytes(h, raid_ctlr_position,
3092 i, nphysicals, nlogicals, physdev_list, logdev_list);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003093 /* skip masked physical devices. */
Stephen M. Cameron339b2b12010-02-04 08:42:50 -06003094 if (lunaddrbytes[3] & 0xC0 &&
3095 i < nphysicals + (raid_ctlr_position == 0))
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003096 continue;
3097
3098 /* Get device type, vendor, model, device id */
Stephen M. Cameron0b0e1d62011-08-09 08:17:30 -05003099 if (hpsa_update_device_info(h, lunaddrbytes, tmpdevice,
3100 &is_OBDR))
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003101 continue; /* skip it if we can't talk to it. */
Stephen M. Cameron1f310bd2012-01-19 14:01:14 -06003102 figure_bus_target_lun(h, lunaddrbytes, tmpdevice);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003103 this_device = currentsd[ncurrent];
3104
3105 /*
Scott Teel4f4eb9f2012-01-19 14:01:25 -06003106 * For external target devices, we have to insert a LUN 0 which
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003107 * doesn't show up in CCISS_REPORT_PHYSICAL data, but there
3108 * is nonetheless an enclosure device there. We have to
3109 * present that otherwise linux won't find anything if
3110 * there is no lun 0.
3111 */
Scott Teel4f4eb9f2012-01-19 14:01:25 -06003112 if (add_ext_target_dev(h, tmpdevice, this_device,
Stephen M. Cameron1f310bd2012-01-19 14:01:14 -06003113 lunaddrbytes, lunzerobits,
Scott Teel4f4eb9f2012-01-19 14:01:25 -06003114 &n_ext_target_devs)) {
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003115 ncurrent++;
3116 this_device = currentsd[ncurrent];
3117 }
3118
3119 *this_device = *tmpdevice;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003120
3121 switch (this_device->devtype) {
Stephen M. Cameron0b0e1d62011-08-09 08:17:30 -05003122 case TYPE_ROM:
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003123 /* We don't *really* support actual CD-ROM devices,
3124 * just "One Button Disaster Recovery" tape drive
3125 * which temporarily pretends to be a CD-ROM drive.
3126 * So we check that the device is really an OBDR tape
3127 * device by checking for "$DR-10" in bytes 43-48 of
3128 * the inquiry data.
3129 */
Stephen M. Cameron0b0e1d62011-08-09 08:17:30 -05003130 if (is_OBDR)
3131 ncurrent++;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003132 break;
3133 case TYPE_DISK:
Stephen M. Cameron316b2212014-02-21 16:25:15 -06003134 if (h->hba_mode_enabled) {
3135 /* never use raid mapper in HBA mode */
3136 this_device->offload_enabled = 0;
3137 ncurrent++;
3138 break;
3139 } else if (h->acciopath_status) {
3140 if (i >= nphysicals) {
3141 ncurrent++;
3142 break;
3143 }
3144 } else {
3145 if (i < nphysicals)
3146 break;
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06003147 ncurrent++;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003148 break;
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06003149 }
3150 if (physical_mode == HPSA_REPORT_PHYS_EXTENDED) {
3151 memcpy(&this_device->ioaccel_handle,
3152 &lunaddrbytes[20],
3153 sizeof(this_device->ioaccel_handle));
3154 ncurrent++;
3155 }
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003156 break;
3157 case TYPE_TAPE:
3158 case TYPE_MEDIUM_CHANGER:
3159 ncurrent++;
3160 break;
3161 case TYPE_RAID:
3162 /* Only present the Smartarray HBA as a RAID controller.
3163 * If it's a RAID controller other than the HBA itself
3164 * (an external RAID controller, MSA500 or similar)
3165 * don't present it.
3166 */
3167 if (!is_hba_lunid(lunaddrbytes))
3168 break;
3169 ncurrent++;
3170 break;
3171 default:
3172 break;
3173 }
Scott Teelcfe5bad2011-10-26 16:21:07 -05003174 if (ncurrent >= HPSA_MAX_DEVICES)
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003175 break;
3176 }
3177 adjust_hpsa_scsi_table(h, hostno, currentsd, ncurrent);
3178out:
3179 kfree(tmpdevice);
3180 for (i = 0; i < ndev_allocated; i++)
3181 kfree(currentsd[i]);
3182 kfree(currentsd);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003183 kfree(physdev_list);
3184 kfree(logdev_list);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003185}
3186
3187/* hpsa_scatter_gather takes a struct scsi_cmnd, (cmd), and does the pci
3188 * dma mapping and fills in the scatter gather entries of the
3189 * hpsa command, cp.
3190 */
Stephen M. Cameron33a2ffc2010-02-25 14:03:27 -06003191static int hpsa_scatter_gather(struct ctlr_info *h,
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003192 struct CommandList *cp,
3193 struct scsi_cmnd *cmd)
3194{
3195 unsigned int len;
3196 struct scatterlist *sg;
Stephen M. Cameron01a02ff2010-02-04 08:41:33 -06003197 u64 addr64;
Stephen M. Cameron33a2ffc2010-02-25 14:03:27 -06003198 int use_sg, i, sg_index, chained;
3199 struct SGDescriptor *curr_sg;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003200
Stephen M. Cameron33a2ffc2010-02-25 14:03:27 -06003201 BUG_ON(scsi_sg_count(cmd) > h->maxsgentries);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003202
3203 use_sg = scsi_dma_map(cmd);
3204 if (use_sg < 0)
3205 return use_sg;
3206
3207 if (!use_sg)
3208 goto sglist_finished;
3209
Stephen M. Cameron33a2ffc2010-02-25 14:03:27 -06003210 curr_sg = cp->SG;
3211 chained = 0;
3212 sg_index = 0;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003213 scsi_for_each_sg(cmd, sg, use_sg, i) {
Stephen M. Cameron33a2ffc2010-02-25 14:03:27 -06003214 if (i == h->max_cmd_sg_entries - 1 &&
3215 use_sg > h->max_cmd_sg_entries) {
3216 chained = 1;
3217 curr_sg = h->cmd_sg_list[cp->cmdindex];
3218 sg_index = 0;
3219 }
Stephen M. Cameron01a02ff2010-02-04 08:41:33 -06003220 addr64 = (u64) sg_dma_address(sg);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003221 len = sg_dma_len(sg);
Stephen M. Cameron33a2ffc2010-02-25 14:03:27 -06003222 curr_sg->Addr.lower = (u32) (addr64 & 0x0FFFFFFFFULL);
3223 curr_sg->Addr.upper = (u32) ((addr64 >> 32) & 0x0FFFFFFFFULL);
3224 curr_sg->Len = len;
Matt Gatese1d9cbf2014-02-18 13:55:12 -06003225 curr_sg->Ext = (i < scsi_sg_count(cmd) - 1) ? 0 : HPSA_SG_LAST;
Stephen M. Cameron33a2ffc2010-02-25 14:03:27 -06003226 curr_sg++;
3227 }
3228
3229 if (use_sg + chained > h->maxSG)
3230 h->maxSG = use_sg + chained;
3231
3232 if (chained) {
3233 cp->Header.SGList = h->max_cmd_sg_entries;
3234 cp->Header.SGTotal = (u16) (use_sg + 1);
Stephen M. Camerone2bea6d2013-02-20 11:24:46 -06003235 if (hpsa_map_sg_chain_block(h, cp)) {
3236 scsi_dma_unmap(cmd);
3237 return -1;
3238 }
Stephen M. Cameron33a2ffc2010-02-25 14:03:27 -06003239 return 0;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003240 }
3241
3242sglist_finished:
3243
Stephen M. Cameron01a02ff2010-02-04 08:41:33 -06003244 cp->Header.SGList = (u8) use_sg; /* no. SGs contig in this cmd */
3245 cp->Header.SGTotal = (u16) use_sg; /* total sgs in this cmd list */
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003246 return 0;
3247}
3248
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06003249#define IO_ACCEL_INELIGIBLE (1)
3250static int fixup_ioaccel_cdb(u8 *cdb, int *cdb_len)
3251{
3252 int is_write = 0;
3253 u32 block;
3254 u32 block_cnt;
3255
3256 /* Perform some CDB fixups if needed using 10 byte reads/writes only */
3257 switch (cdb[0]) {
3258 case WRITE_6:
3259 case WRITE_12:
3260 is_write = 1;
3261 case READ_6:
3262 case READ_12:
3263 if (*cdb_len == 6) {
3264 block = (((u32) cdb[2]) << 8) | cdb[3];
3265 block_cnt = cdb[4];
3266 } else {
3267 BUG_ON(*cdb_len != 12);
3268 block = (((u32) cdb[2]) << 24) |
3269 (((u32) cdb[3]) << 16) |
3270 (((u32) cdb[4]) << 8) |
3271 cdb[5];
3272 block_cnt =
3273 (((u32) cdb[6]) << 24) |
3274 (((u32) cdb[7]) << 16) |
3275 (((u32) cdb[8]) << 8) |
3276 cdb[9];
3277 }
3278 if (block_cnt > 0xffff)
3279 return IO_ACCEL_INELIGIBLE;
3280
3281 cdb[0] = is_write ? WRITE_10 : READ_10;
3282 cdb[1] = 0;
3283 cdb[2] = (u8) (block >> 24);
3284 cdb[3] = (u8) (block >> 16);
3285 cdb[4] = (u8) (block >> 8);
3286 cdb[5] = (u8) (block);
3287 cdb[6] = 0;
3288 cdb[7] = (u8) (block_cnt >> 8);
3289 cdb[8] = (u8) (block_cnt);
3290 cdb[9] = 0;
3291 *cdb_len = 10;
3292 break;
3293 }
3294 return 0;
3295}
3296
Scott Teelc3497752014-02-18 13:56:34 -06003297static int hpsa_scsi_ioaccel1_queue_command(struct ctlr_info *h,
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06003298 struct CommandList *c, u32 ioaccel_handle, u8 *cdb, int cdb_len,
3299 u8 *scsi3addr)
Matt Gatese1f7de02014-02-18 13:55:17 -06003300{
3301 struct scsi_cmnd *cmd = c->scsi_cmd;
Matt Gatese1f7de02014-02-18 13:55:17 -06003302 struct io_accel1_cmd *cp = &h->ioaccel_cmd_pool[c->cmdindex];
3303 unsigned int len;
3304 unsigned int total_len = 0;
3305 struct scatterlist *sg;
3306 u64 addr64;
3307 int use_sg, i;
3308 struct SGDescriptor *curr_sg;
3309 u32 control = IOACCEL1_CONTROL_SIMPLEQUEUE;
3310
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06003311 /* TODO: implement chaining support */
3312 if (scsi_sg_count(cmd) > h->ioaccel_maxsg)
3313 return IO_ACCEL_INELIGIBLE;
3314
Matt Gatese1f7de02014-02-18 13:55:17 -06003315 BUG_ON(cmd->cmd_len > IOACCEL1_IOFLAGS_CDBLEN_MAX);
3316
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06003317 if (fixup_ioaccel_cdb(cdb, &cdb_len))
3318 return IO_ACCEL_INELIGIBLE;
3319
Matt Gatese1f7de02014-02-18 13:55:17 -06003320 c->cmd_type = CMD_IOACCEL1;
3321
3322 /* Adjust the DMA address to point to the accelerated command buffer */
3323 c->busaddr = (u32) h->ioaccel_cmd_pool_dhandle +
3324 (c->cmdindex * sizeof(*cp));
3325 BUG_ON(c->busaddr & 0x0000007F);
3326
3327 use_sg = scsi_dma_map(cmd);
3328 if (use_sg < 0)
3329 return use_sg;
3330
3331 if (use_sg) {
3332 curr_sg = cp->SG;
3333 scsi_for_each_sg(cmd, sg, use_sg, i) {
3334 addr64 = (u64) sg_dma_address(sg);
3335 len = sg_dma_len(sg);
3336 total_len += len;
3337 curr_sg->Addr.lower = (u32) (addr64 & 0x0FFFFFFFFULL);
3338 curr_sg->Addr.upper =
3339 (u32) ((addr64 >> 32) & 0x0FFFFFFFFULL);
3340 curr_sg->Len = len;
3341
3342 if (i == (scsi_sg_count(cmd) - 1))
3343 curr_sg->Ext = HPSA_SG_LAST;
3344 else
3345 curr_sg->Ext = 0; /* we are not chaining */
3346 curr_sg++;
3347 }
3348
3349 switch (cmd->sc_data_direction) {
3350 case DMA_TO_DEVICE:
3351 control |= IOACCEL1_CONTROL_DATA_OUT;
3352 break;
3353 case DMA_FROM_DEVICE:
3354 control |= IOACCEL1_CONTROL_DATA_IN;
3355 break;
3356 case DMA_NONE:
3357 control |= IOACCEL1_CONTROL_NODATAXFER;
3358 break;
3359 default:
3360 dev_err(&h->pdev->dev, "unknown data direction: %d\n",
3361 cmd->sc_data_direction);
3362 BUG();
3363 break;
3364 }
3365 } else {
3366 control |= IOACCEL1_CONTROL_NODATAXFER;
3367 }
3368
Scott Teelc3497752014-02-18 13:56:34 -06003369 c->Header.SGList = use_sg;
Matt Gatese1f7de02014-02-18 13:55:17 -06003370 /* Fill out the command structure to submit */
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06003371 cp->dev_handle = ioaccel_handle & 0xFFFF;
Matt Gatese1f7de02014-02-18 13:55:17 -06003372 cp->transfer_len = total_len;
3373 cp->io_flags = IOACCEL1_IOFLAGS_IO_REQ |
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06003374 (cdb_len & IOACCEL1_IOFLAGS_CDBLEN_MASK);
Matt Gatese1f7de02014-02-18 13:55:17 -06003375 cp->control = control;
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06003376 memcpy(cp->CDB, cdb, cdb_len);
3377 memcpy(cp->CISS_LUN, scsi3addr, 8);
Scott Teelc3497752014-02-18 13:56:34 -06003378 /* Tag was already set at init time. */
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06003379 enqueue_cmd_and_start_io(h, c);
Matt Gatese1f7de02014-02-18 13:55:17 -06003380 return 0;
3381}
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003382
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06003383/*
3384 * Queue a command directly to a device behind the controller using the
3385 * I/O accelerator path.
3386 */
3387static int hpsa_scsi_ioaccel_direct_map(struct ctlr_info *h,
3388 struct CommandList *c)
3389{
3390 struct scsi_cmnd *cmd = c->scsi_cmd;
3391 struct hpsa_scsi_dev_t *dev = cmd->device->hostdata;
3392
3393 return hpsa_scsi_ioaccel_queue_command(h, c, dev->ioaccel_handle,
3394 cmd->cmnd, cmd->cmd_len, dev->scsi3addr);
3395}
3396
Scott Teeldd0e19f2014-02-18 13:57:31 -06003397/*
3398 * Set encryption parameters for the ioaccel2 request
3399 */
3400static void set_encrypt_ioaccel2(struct ctlr_info *h,
3401 struct CommandList *c, struct io_accel2_cmd *cp)
3402{
3403 struct scsi_cmnd *cmd = c->scsi_cmd;
3404 struct hpsa_scsi_dev_t *dev = cmd->device->hostdata;
3405 struct raid_map_data *map = &dev->raid_map;
3406 u64 first_block;
3407
3408 BUG_ON(!(dev->offload_config && dev->offload_enabled));
3409
3410 /* Are we doing encryption on this device */
3411 if (!(map->flags & RAID_MAP_FLAG_ENCRYPT_ON))
3412 return;
3413 /* Set the data encryption key index. */
3414 cp->dekindex = map->dekindex;
3415
3416 /* Set the encryption enable flag, encoded into direction field. */
3417 cp->direction |= IOACCEL2_DIRECTION_ENCRYPT_MASK;
3418
3419 /* Set encryption tweak values based on logical block address
3420 * If block size is 512, tweak value is LBA.
3421 * For other block sizes, tweak is (LBA * block size)/ 512)
3422 */
3423 switch (cmd->cmnd[0]) {
3424 /* Required? 6-byte cdbs eliminated by fixup_ioaccel_cdb */
3425 case WRITE_6:
3426 case READ_6:
3427 if (map->volume_blk_size == 512) {
3428 cp->tweak_lower =
3429 (((u32) cmd->cmnd[2]) << 8) |
3430 cmd->cmnd[3];
3431 cp->tweak_upper = 0;
3432 } else {
3433 first_block =
3434 (((u64) cmd->cmnd[2]) << 8) |
3435 cmd->cmnd[3];
3436 first_block = (first_block * map->volume_blk_size)/512;
3437 cp->tweak_lower = (u32)first_block;
3438 cp->tweak_upper = (u32)(first_block >> 32);
3439 }
3440 break;
3441 case WRITE_10:
3442 case READ_10:
3443 if (map->volume_blk_size == 512) {
3444 cp->tweak_lower =
3445 (((u32) cmd->cmnd[2]) << 24) |
3446 (((u32) cmd->cmnd[3]) << 16) |
3447 (((u32) cmd->cmnd[4]) << 8) |
3448 cmd->cmnd[5];
3449 cp->tweak_upper = 0;
3450 } else {
3451 first_block =
3452 (((u64) cmd->cmnd[2]) << 24) |
3453 (((u64) cmd->cmnd[3]) << 16) |
3454 (((u64) cmd->cmnd[4]) << 8) |
3455 cmd->cmnd[5];
3456 first_block = (first_block * map->volume_blk_size)/512;
3457 cp->tweak_lower = (u32)first_block;
3458 cp->tweak_upper = (u32)(first_block >> 32);
3459 }
3460 break;
3461 /* Required? 12-byte cdbs eliminated by fixup_ioaccel_cdb */
3462 case WRITE_12:
3463 case READ_12:
3464 if (map->volume_blk_size == 512) {
3465 cp->tweak_lower =
3466 (((u32) cmd->cmnd[2]) << 24) |
3467 (((u32) cmd->cmnd[3]) << 16) |
3468 (((u32) cmd->cmnd[4]) << 8) |
3469 cmd->cmnd[5];
3470 cp->tweak_upper = 0;
3471 } else {
3472 first_block =
3473 (((u64) cmd->cmnd[2]) << 24) |
3474 (((u64) cmd->cmnd[3]) << 16) |
3475 (((u64) cmd->cmnd[4]) << 8) |
3476 cmd->cmnd[5];
3477 first_block = (first_block * map->volume_blk_size)/512;
3478 cp->tweak_lower = (u32)first_block;
3479 cp->tweak_upper = (u32)(first_block >> 32);
3480 }
3481 break;
3482 case WRITE_16:
3483 case READ_16:
3484 if (map->volume_blk_size == 512) {
3485 cp->tweak_lower =
3486 (((u32) cmd->cmnd[6]) << 24) |
3487 (((u32) cmd->cmnd[7]) << 16) |
3488 (((u32) cmd->cmnd[8]) << 8) |
3489 cmd->cmnd[9];
3490 cp->tweak_upper =
3491 (((u32) cmd->cmnd[2]) << 24) |
3492 (((u32) cmd->cmnd[3]) << 16) |
3493 (((u32) cmd->cmnd[4]) << 8) |
3494 cmd->cmnd[5];
3495 } else {
3496 first_block =
3497 (((u64) cmd->cmnd[2]) << 56) |
3498 (((u64) cmd->cmnd[3]) << 48) |
3499 (((u64) cmd->cmnd[4]) << 40) |
3500 (((u64) cmd->cmnd[5]) << 32) |
3501 (((u64) cmd->cmnd[6]) << 24) |
3502 (((u64) cmd->cmnd[7]) << 16) |
3503 (((u64) cmd->cmnd[8]) << 8) |
3504 cmd->cmnd[9];
3505 first_block = (first_block * map->volume_blk_size)/512;
3506 cp->tweak_lower = (u32)first_block;
3507 cp->tweak_upper = (u32)(first_block >> 32);
3508 }
3509 break;
3510 default:
3511 dev_err(&h->pdev->dev,
3512 "ERROR: %s: IOACCEL request CDB size not supported for encryption\n",
3513 __func__);
3514 BUG();
3515 break;
3516 }
3517}
3518
Scott Teelc3497752014-02-18 13:56:34 -06003519static int hpsa_scsi_ioaccel2_queue_command(struct ctlr_info *h,
3520 struct CommandList *c, u32 ioaccel_handle, u8 *cdb, int cdb_len,
3521 u8 *scsi3addr)
3522{
3523 struct scsi_cmnd *cmd = c->scsi_cmd;
3524 struct io_accel2_cmd *cp = &h->ioaccel2_cmd_pool[c->cmdindex];
3525 struct ioaccel2_sg_element *curr_sg;
3526 int use_sg, i;
3527 struct scatterlist *sg;
3528 u64 addr64;
3529 u32 len;
3530 u32 total_len = 0;
3531
3532 if (scsi_sg_count(cmd) > h->ioaccel_maxsg)
3533 return IO_ACCEL_INELIGIBLE;
3534
3535 if (fixup_ioaccel_cdb(cdb, &cdb_len))
3536 return IO_ACCEL_INELIGIBLE;
3537 c->cmd_type = CMD_IOACCEL2;
3538 /* Adjust the DMA address to point to the accelerated command buffer */
3539 c->busaddr = (u32) h->ioaccel2_cmd_pool_dhandle +
3540 (c->cmdindex * sizeof(*cp));
3541 BUG_ON(c->busaddr & 0x0000007F);
3542
3543 memset(cp, 0, sizeof(*cp));
3544 cp->IU_type = IOACCEL2_IU_TYPE;
3545
3546 use_sg = scsi_dma_map(cmd);
3547 if (use_sg < 0)
3548 return use_sg;
3549
3550 if (use_sg) {
3551 BUG_ON(use_sg > IOACCEL2_MAXSGENTRIES);
3552 curr_sg = cp->sg;
3553 scsi_for_each_sg(cmd, sg, use_sg, i) {
3554 addr64 = (u64) sg_dma_address(sg);
3555 len = sg_dma_len(sg);
3556 total_len += len;
3557 curr_sg->address = cpu_to_le64(addr64);
3558 curr_sg->length = cpu_to_le32(len);
3559 curr_sg->reserved[0] = 0;
3560 curr_sg->reserved[1] = 0;
3561 curr_sg->reserved[2] = 0;
3562 curr_sg->chain_indicator = 0;
3563 curr_sg++;
3564 }
3565
3566 switch (cmd->sc_data_direction) {
3567 case DMA_TO_DEVICE:
Scott Teeldd0e19f2014-02-18 13:57:31 -06003568 cp->direction &= ~IOACCEL2_DIRECTION_MASK;
3569 cp->direction |= IOACCEL2_DIR_DATA_OUT;
Scott Teelc3497752014-02-18 13:56:34 -06003570 break;
3571 case DMA_FROM_DEVICE:
Scott Teeldd0e19f2014-02-18 13:57:31 -06003572 cp->direction &= ~IOACCEL2_DIRECTION_MASK;
3573 cp->direction |= IOACCEL2_DIR_DATA_IN;
Scott Teelc3497752014-02-18 13:56:34 -06003574 break;
3575 case DMA_NONE:
Scott Teeldd0e19f2014-02-18 13:57:31 -06003576 cp->direction &= ~IOACCEL2_DIRECTION_MASK;
3577 cp->direction |= IOACCEL2_DIR_NO_DATA;
Scott Teelc3497752014-02-18 13:56:34 -06003578 break;
3579 default:
3580 dev_err(&h->pdev->dev, "unknown data direction: %d\n",
3581 cmd->sc_data_direction);
3582 BUG();
3583 break;
3584 }
3585 } else {
Scott Teeldd0e19f2014-02-18 13:57:31 -06003586 cp->direction &= ~IOACCEL2_DIRECTION_MASK;
3587 cp->direction |= IOACCEL2_DIR_NO_DATA;
Scott Teelc3497752014-02-18 13:56:34 -06003588 }
Scott Teeldd0e19f2014-02-18 13:57:31 -06003589
3590 /* Set encryption parameters, if necessary */
3591 set_encrypt_ioaccel2(h, c, cp);
3592
Scott Teelc3497752014-02-18 13:56:34 -06003593 cp->scsi_nexus = ioaccel_handle;
Scott Teeldd0e19f2014-02-18 13:57:31 -06003594 cp->Tag = (c->cmdindex << DIRECT_LOOKUP_SHIFT) |
Scott Teelc3497752014-02-18 13:56:34 -06003595 DIRECT_LOOKUP_BIT;
3596 memcpy(cp->cdb, cdb, sizeof(cp->cdb));
Scott Teelc3497752014-02-18 13:56:34 -06003597
3598 /* fill in sg elements */
3599 cp->sg_count = (u8) use_sg;
3600
3601 cp->data_len = cpu_to_le32(total_len);
3602 cp->err_ptr = cpu_to_le64(c->busaddr +
3603 offsetof(struct io_accel2_cmd, error_data));
3604 cp->err_len = cpu_to_le32((u32) sizeof(cp->error_data));
3605
3606 enqueue_cmd_and_start_io(h, c);
3607 return 0;
3608}
3609
3610/*
3611 * Queue a command to the correct I/O accelerator path.
3612 */
3613static int hpsa_scsi_ioaccel_queue_command(struct ctlr_info *h,
3614 struct CommandList *c, u32 ioaccel_handle, u8 *cdb, int cdb_len,
3615 u8 *scsi3addr)
3616{
3617 if (h->transMethod & CFGTBL_Trans_io_accel1)
3618 return hpsa_scsi_ioaccel1_queue_command(h, c, ioaccel_handle,
3619 cdb, cdb_len, scsi3addr);
3620 else
3621 return hpsa_scsi_ioaccel2_queue_command(h, c, ioaccel_handle,
3622 cdb, cdb_len, scsi3addr);
3623}
3624
Scott Teel6b80b182014-02-18 13:56:55 -06003625static void raid_map_helper(struct raid_map_data *map,
3626 int offload_to_mirror, u32 *map_index, u32 *current_group)
3627{
3628 if (offload_to_mirror == 0) {
3629 /* use physical disk in the first mirrored group. */
3630 *map_index %= map->data_disks_per_row;
3631 return;
3632 }
3633 do {
3634 /* determine mirror group that *map_index indicates */
3635 *current_group = *map_index / map->data_disks_per_row;
3636 if (offload_to_mirror == *current_group)
3637 continue;
3638 if (*current_group < (map->layout_map_count - 1)) {
3639 /* select map index from next group */
3640 *map_index += map->data_disks_per_row;
3641 (*current_group)++;
3642 } else {
3643 /* select map index from first group */
3644 *map_index %= map->data_disks_per_row;
3645 *current_group = 0;
3646 }
3647 } while (offload_to_mirror != *current_group);
3648}
3649
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06003650/*
3651 * Attempt to perform offload RAID mapping for a logical volume I/O.
3652 */
3653static int hpsa_scsi_ioaccel_raid_map(struct ctlr_info *h,
3654 struct CommandList *c)
3655{
3656 struct scsi_cmnd *cmd = c->scsi_cmd;
3657 struct hpsa_scsi_dev_t *dev = cmd->device->hostdata;
3658 struct raid_map_data *map = &dev->raid_map;
3659 struct raid_map_disk_data *dd = &map->data[0];
3660 int is_write = 0;
3661 u32 map_index;
3662 u64 first_block, last_block;
3663 u32 block_cnt;
3664 u32 blocks_per_row;
3665 u64 first_row, last_row;
3666 u32 first_row_offset, last_row_offset;
3667 u32 first_column, last_column;
Scott Teel6b80b182014-02-18 13:56:55 -06003668 u64 r0_first_row, r0_last_row;
3669 u32 r5or6_blocks_per_row;
3670 u64 r5or6_first_row, r5or6_last_row;
3671 u32 r5or6_first_row_offset, r5or6_last_row_offset;
3672 u32 r5or6_first_column, r5or6_last_column;
3673 u32 total_disks_per_row;
3674 u32 stripesize;
3675 u32 first_group, last_group, current_group;
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06003676 u32 map_row;
3677 u32 disk_handle;
3678 u64 disk_block;
3679 u32 disk_block_cnt;
3680 u8 cdb[16];
3681 u8 cdb_len;
3682#if BITS_PER_LONG == 32
3683 u64 tmpdiv;
3684#endif
Scott Teel6b80b182014-02-18 13:56:55 -06003685 int offload_to_mirror;
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06003686
3687 BUG_ON(!(dev->offload_config && dev->offload_enabled));
3688
3689 /* check for valid opcode, get LBA and block count */
3690 switch (cmd->cmnd[0]) {
3691 case WRITE_6:
3692 is_write = 1;
3693 case READ_6:
3694 first_block =
3695 (((u64) cmd->cmnd[2]) << 8) |
3696 cmd->cmnd[3];
3697 block_cnt = cmd->cmnd[4];
3698 break;
3699 case WRITE_10:
3700 is_write = 1;
3701 case READ_10:
3702 first_block =
3703 (((u64) cmd->cmnd[2]) << 24) |
3704 (((u64) cmd->cmnd[3]) << 16) |
3705 (((u64) cmd->cmnd[4]) << 8) |
3706 cmd->cmnd[5];
3707 block_cnt =
3708 (((u32) cmd->cmnd[7]) << 8) |
3709 cmd->cmnd[8];
3710 break;
3711 case WRITE_12:
3712 is_write = 1;
3713 case READ_12:
3714 first_block =
3715 (((u64) cmd->cmnd[2]) << 24) |
3716 (((u64) cmd->cmnd[3]) << 16) |
3717 (((u64) cmd->cmnd[4]) << 8) |
3718 cmd->cmnd[5];
3719 block_cnt =
3720 (((u32) cmd->cmnd[6]) << 24) |
3721 (((u32) cmd->cmnd[7]) << 16) |
3722 (((u32) cmd->cmnd[8]) << 8) |
3723 cmd->cmnd[9];
3724 break;
3725 case WRITE_16:
3726 is_write = 1;
3727 case READ_16:
3728 first_block =
3729 (((u64) cmd->cmnd[2]) << 56) |
3730 (((u64) cmd->cmnd[3]) << 48) |
3731 (((u64) cmd->cmnd[4]) << 40) |
3732 (((u64) cmd->cmnd[5]) << 32) |
3733 (((u64) cmd->cmnd[6]) << 24) |
3734 (((u64) cmd->cmnd[7]) << 16) |
3735 (((u64) cmd->cmnd[8]) << 8) |
3736 cmd->cmnd[9];
3737 block_cnt =
3738 (((u32) cmd->cmnd[10]) << 24) |
3739 (((u32) cmd->cmnd[11]) << 16) |
3740 (((u32) cmd->cmnd[12]) << 8) |
3741 cmd->cmnd[13];
3742 break;
3743 default:
3744 return IO_ACCEL_INELIGIBLE; /* process via normal I/O path */
3745 }
3746 BUG_ON(block_cnt == 0);
3747 last_block = first_block + block_cnt - 1;
3748
3749 /* check for write to non-RAID-0 */
3750 if (is_write && dev->raid_level != 0)
3751 return IO_ACCEL_INELIGIBLE;
3752
3753 /* check for invalid block or wraparound */
3754 if (last_block >= map->volume_blk_cnt || last_block < first_block)
3755 return IO_ACCEL_INELIGIBLE;
3756
3757 /* calculate stripe information for the request */
3758 blocks_per_row = map->data_disks_per_row * map->strip_size;
3759#if BITS_PER_LONG == 32
3760 tmpdiv = first_block;
3761 (void) do_div(tmpdiv, blocks_per_row);
3762 first_row = tmpdiv;
3763 tmpdiv = last_block;
3764 (void) do_div(tmpdiv, blocks_per_row);
3765 last_row = tmpdiv;
3766 first_row_offset = (u32) (first_block - (first_row * blocks_per_row));
3767 last_row_offset = (u32) (last_block - (last_row * blocks_per_row));
3768 tmpdiv = first_row_offset;
3769 (void) do_div(tmpdiv, map->strip_size);
3770 first_column = tmpdiv;
3771 tmpdiv = last_row_offset;
3772 (void) do_div(tmpdiv, map->strip_size);
3773 last_column = tmpdiv;
3774#else
3775 first_row = first_block / blocks_per_row;
3776 last_row = last_block / blocks_per_row;
3777 first_row_offset = (u32) (first_block - (first_row * blocks_per_row));
3778 last_row_offset = (u32) (last_block - (last_row * blocks_per_row));
3779 first_column = first_row_offset / map->strip_size;
3780 last_column = last_row_offset / map->strip_size;
3781#endif
3782
3783 /* if this isn't a single row/column then give to the controller */
3784 if ((first_row != last_row) || (first_column != last_column))
3785 return IO_ACCEL_INELIGIBLE;
3786
3787 /* proceeding with driver mapping */
Scott Teel6b80b182014-02-18 13:56:55 -06003788 total_disks_per_row = map->data_disks_per_row +
3789 map->metadata_disks_per_row;
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06003790 map_row = ((u32)(first_row >> map->parity_rotation_shift)) %
3791 map->row_cnt;
Scott Teel6b80b182014-02-18 13:56:55 -06003792 map_index = (map_row * total_disks_per_row) + first_column;
3793
3794 switch (dev->raid_level) {
3795 case HPSA_RAID_0:
3796 break; /* nothing special to do */
3797 case HPSA_RAID_1:
3798 /* Handles load balance across RAID 1 members.
3799 * (2-drive R1 and R10 with even # of drives.)
3800 * Appropriate for SSDs, not optimal for HDDs
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06003801 */
Scott Teel6b80b182014-02-18 13:56:55 -06003802 BUG_ON(map->layout_map_count != 2);
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06003803 if (dev->offload_to_mirror)
3804 map_index += map->data_disks_per_row;
3805 dev->offload_to_mirror = !dev->offload_to_mirror;
Scott Teel6b80b182014-02-18 13:56:55 -06003806 break;
3807 case HPSA_RAID_ADM:
3808 /* Handles N-way mirrors (R1-ADM)
3809 * and R10 with # of drives divisible by 3.)
3810 */
3811 BUG_ON(map->layout_map_count != 3);
3812
3813 offload_to_mirror = dev->offload_to_mirror;
3814 raid_map_helper(map, offload_to_mirror,
3815 &map_index, &current_group);
3816 /* set mirror group to use next time */
3817 offload_to_mirror =
3818 (offload_to_mirror >= map->layout_map_count - 1)
3819 ? 0 : offload_to_mirror + 1;
3820 /* FIXME: remove after debug/dev */
3821 BUG_ON(offload_to_mirror >= map->layout_map_count);
3822 dev_warn(&h->pdev->dev,
3823 "DEBUG: Using physical disk map index %d from mirror group %d\n",
3824 map_index, offload_to_mirror);
3825 dev->offload_to_mirror = offload_to_mirror;
3826 /* Avoid direct use of dev->offload_to_mirror within this
3827 * function since multiple threads might simultaneously
3828 * increment it beyond the range of dev->layout_map_count -1.
3829 */
3830 break;
3831 case HPSA_RAID_5:
3832 case HPSA_RAID_6:
3833 if (map->layout_map_count <= 1)
3834 break;
3835
3836 /* Verify first and last block are in same RAID group */
3837 r5or6_blocks_per_row =
3838 map->strip_size * map->data_disks_per_row;
3839 BUG_ON(r5or6_blocks_per_row == 0);
3840 stripesize = r5or6_blocks_per_row * map->layout_map_count;
3841#if BITS_PER_LONG == 32
3842 tmpdiv = first_block;
3843 first_group = do_div(tmpdiv, stripesize);
3844 tmpdiv = first_group;
3845 (void) do_div(tmpdiv, r5or6_blocks_per_row);
3846 first_group = tmpdiv;
3847 tmpdiv = last_block;
3848 last_group = do_div(tmpdiv, stripesize);
3849 tmpdiv = last_group;
3850 (void) do_div(tmpdiv, r5or6_blocks_per_row);
3851 last_group = tmpdiv;
3852#else
3853 first_group = (first_block % stripesize) / r5or6_blocks_per_row;
3854 last_group = (last_block % stripesize) / r5or6_blocks_per_row;
Scott Teel6b80b182014-02-18 13:56:55 -06003855#endif
Stephen M. Cameron000ff7c2014-03-13 17:12:50 -05003856 if (first_group != last_group)
Scott Teel6b80b182014-02-18 13:56:55 -06003857 return IO_ACCEL_INELIGIBLE;
3858
3859 /* Verify request is in a single row of RAID 5/6 */
3860#if BITS_PER_LONG == 32
3861 tmpdiv = first_block;
3862 (void) do_div(tmpdiv, stripesize);
3863 first_row = r5or6_first_row = r0_first_row = tmpdiv;
3864 tmpdiv = last_block;
3865 (void) do_div(tmpdiv, stripesize);
3866 r5or6_last_row = r0_last_row = tmpdiv;
3867#else
3868 first_row = r5or6_first_row = r0_first_row =
3869 first_block / stripesize;
3870 r5or6_last_row = r0_last_row = last_block / stripesize;
3871#endif
3872 if (r5or6_first_row != r5or6_last_row)
3873 return IO_ACCEL_INELIGIBLE;
3874
3875
3876 /* Verify request is in a single column */
3877#if BITS_PER_LONG == 32
3878 tmpdiv = first_block;
3879 first_row_offset = do_div(tmpdiv, stripesize);
3880 tmpdiv = first_row_offset;
3881 first_row_offset = (u32) do_div(tmpdiv, r5or6_blocks_per_row);
3882 r5or6_first_row_offset = first_row_offset;
3883 tmpdiv = last_block;
3884 r5or6_last_row_offset = do_div(tmpdiv, stripesize);
3885 tmpdiv = r5or6_last_row_offset;
3886 r5or6_last_row_offset = do_div(tmpdiv, r5or6_blocks_per_row);
3887 tmpdiv = r5or6_first_row_offset;
3888 (void) do_div(tmpdiv, map->strip_size);
3889 first_column = r5or6_first_column = tmpdiv;
3890 tmpdiv = r5or6_last_row_offset;
3891 (void) do_div(tmpdiv, map->strip_size);
3892 r5or6_last_column = tmpdiv;
3893#else
3894 first_row_offset = r5or6_first_row_offset =
3895 (u32)((first_block % stripesize) %
3896 r5or6_blocks_per_row);
3897
3898 r5or6_last_row_offset =
3899 (u32)((last_block % stripesize) %
3900 r5or6_blocks_per_row);
3901
3902 first_column = r5or6_first_column =
3903 r5or6_first_row_offset / map->strip_size;
3904 r5or6_last_column =
3905 r5or6_last_row_offset / map->strip_size;
3906#endif
3907 if (r5or6_first_column != r5or6_last_column)
3908 return IO_ACCEL_INELIGIBLE;
3909
3910 /* Request is eligible */
3911 map_row = ((u32)(first_row >> map->parity_rotation_shift)) %
3912 map->row_cnt;
3913
3914 map_index = (first_group *
3915 (map->row_cnt * total_disks_per_row)) +
3916 (map_row * total_disks_per_row) + first_column;
3917 break;
3918 default:
3919 return IO_ACCEL_INELIGIBLE;
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06003920 }
Scott Teel6b80b182014-02-18 13:56:55 -06003921
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06003922 disk_handle = dd[map_index].ioaccel_handle;
3923 disk_block = map->disk_starting_blk + (first_row * map->strip_size) +
3924 (first_row_offset - (first_column * map->strip_size));
3925 disk_block_cnt = block_cnt;
3926
3927 /* handle differing logical/physical block sizes */
3928 if (map->phys_blk_shift) {
3929 disk_block <<= map->phys_blk_shift;
3930 disk_block_cnt <<= map->phys_blk_shift;
3931 }
3932 BUG_ON(disk_block_cnt > 0xffff);
3933
3934 /* build the new CDB for the physical disk I/O */
3935 if (disk_block > 0xffffffff) {
3936 cdb[0] = is_write ? WRITE_16 : READ_16;
3937 cdb[1] = 0;
3938 cdb[2] = (u8) (disk_block >> 56);
3939 cdb[3] = (u8) (disk_block >> 48);
3940 cdb[4] = (u8) (disk_block >> 40);
3941 cdb[5] = (u8) (disk_block >> 32);
3942 cdb[6] = (u8) (disk_block >> 24);
3943 cdb[7] = (u8) (disk_block >> 16);
3944 cdb[8] = (u8) (disk_block >> 8);
3945 cdb[9] = (u8) (disk_block);
3946 cdb[10] = (u8) (disk_block_cnt >> 24);
3947 cdb[11] = (u8) (disk_block_cnt >> 16);
3948 cdb[12] = (u8) (disk_block_cnt >> 8);
3949 cdb[13] = (u8) (disk_block_cnt);
3950 cdb[14] = 0;
3951 cdb[15] = 0;
3952 cdb_len = 16;
3953 } else {
3954 cdb[0] = is_write ? WRITE_10 : READ_10;
3955 cdb[1] = 0;
3956 cdb[2] = (u8) (disk_block >> 24);
3957 cdb[3] = (u8) (disk_block >> 16);
3958 cdb[4] = (u8) (disk_block >> 8);
3959 cdb[5] = (u8) (disk_block);
3960 cdb[6] = 0;
3961 cdb[7] = (u8) (disk_block_cnt >> 8);
3962 cdb[8] = (u8) (disk_block_cnt);
3963 cdb[9] = 0;
3964 cdb_len = 10;
3965 }
3966 return hpsa_scsi_ioaccel_queue_command(h, c, disk_handle, cdb, cdb_len,
3967 dev->scsi3addr);
3968}
3969
Jeff Garzikf2812332010-11-16 02:10:29 -05003970static int hpsa_scsi_queue_command_lck(struct scsi_cmnd *cmd,
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003971 void (*done)(struct scsi_cmnd *))
3972{
3973 struct ctlr_info *h;
3974 struct hpsa_scsi_dev_t *dev;
3975 unsigned char scsi3addr[8];
3976 struct CommandList *c;
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06003977 int rc = 0;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003978
3979 /* Get the ptr to our adapter structure out of cmd->host. */
3980 h = sdev_to_hba(cmd->device);
3981 dev = cmd->device->hostdata;
3982 if (!dev) {
3983 cmd->result = DID_NO_CONNECT << 16;
3984 done(cmd);
3985 return 0;
3986 }
3987 memcpy(scsi3addr, dev->scsi3addr, sizeof(scsi3addr));
3988
Stephen M. Cameron094963d2014-05-29 10:53:18 -05003989 if (unlikely(lockup_detected(h))) {
Stephen M. Camerona0c12412011-10-26 16:22:04 -05003990 cmd->result = DID_ERROR << 16;
3991 done(cmd);
3992 return 0;
3993 }
Matt Gatese16a33a2012-05-01 11:43:11 -05003994 c = cmd_alloc(h);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003995 if (c == NULL) { /* trouble... */
3996 dev_err(&h->pdev->dev, "cmd_alloc returned NULL!\n");
3997 return SCSI_MLQUEUE_HOST_BUSY;
3998 }
3999
4000 /* Fill in the command list header */
4001
4002 cmd->scsi_done = done; /* save this for use by completion code */
4003
4004 /* save c in case we have to abort it */
4005 cmd->host_scribble = (unsigned char *) c;
4006
4007 c->cmd_type = CMD_SCSI;
4008 c->scsi_cmd = cmd;
Matt Gatese1f7de02014-02-18 13:55:17 -06004009
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06004010 /* Call alternate submit routine for I/O accelerated commands.
4011 * Retries always go down the normal I/O path.
4012 */
4013 if (likely(cmd->retries == 0 &&
Scott Teelda0697b2014-02-18 13:57:00 -06004014 cmd->request->cmd_type == REQ_TYPE_FS &&
4015 h->acciopath_status)) {
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06004016 if (dev->offload_enabled) {
4017 rc = hpsa_scsi_ioaccel_raid_map(h, c);
4018 if (rc == 0)
4019 return 0; /* Sent on ioaccel path */
4020 if (rc < 0) { /* scsi_dma_map failed. */
4021 cmd_free(h, c);
4022 return SCSI_MLQUEUE_HOST_BUSY;
4023 }
4024 } else if (dev->ioaccel_handle) {
4025 rc = hpsa_scsi_ioaccel_direct_map(h, c);
4026 if (rc == 0)
4027 return 0; /* Sent on direct map path */
4028 if (rc < 0) { /* scsi_dma_map failed. */
4029 cmd_free(h, c);
4030 return SCSI_MLQUEUE_HOST_BUSY;
4031 }
4032 }
4033 }
Matt Gatese1f7de02014-02-18 13:55:17 -06004034
Stephen M. Cameronedd16362009-12-08 14:09:11 -08004035 c->Header.ReplyQueue = 0; /* unused in simple mode */
4036 memcpy(&c->Header.LUN.LunAddrBytes[0], &scsi3addr[0], 8);
Don Brace303932f2010-02-04 08:42:40 -06004037 c->Header.Tag.lower = (c->cmdindex << DIRECT_LOOKUP_SHIFT);
4038 c->Header.Tag.lower |= DIRECT_LOOKUP_BIT;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08004039
4040 /* Fill in the request block... */
4041
4042 c->Request.Timeout = 0;
4043 memset(c->Request.CDB, 0, sizeof(c->Request.CDB));
4044 BUG_ON(cmd->cmd_len > sizeof(c->Request.CDB));
4045 c->Request.CDBLen = cmd->cmd_len;
4046 memcpy(c->Request.CDB, cmd->cmnd, cmd->cmd_len);
4047 c->Request.Type.Type = TYPE_CMD;
4048 c->Request.Type.Attribute = ATTR_SIMPLE;
4049 switch (cmd->sc_data_direction) {
4050 case DMA_TO_DEVICE:
4051 c->Request.Type.Direction = XFER_WRITE;
4052 break;
4053 case DMA_FROM_DEVICE:
4054 c->Request.Type.Direction = XFER_READ;
4055 break;
4056 case DMA_NONE:
4057 c->Request.Type.Direction = XFER_NONE;
4058 break;
4059 case DMA_BIDIRECTIONAL:
4060 /* This can happen if a buggy application does a scsi passthru
4061 * and sets both inlen and outlen to non-zero. ( see
4062 * ../scsi/scsi_ioctl.c:scsi_ioctl_send_command() )
4063 */
4064
4065 c->Request.Type.Direction = XFER_RSVD;
4066 /* This is technically wrong, and hpsa controllers should
4067 * reject it with CMD_INVALID, which is the most correct
4068 * response, but non-fibre backends appear to let it
4069 * slide by, and give the same results as if this field
4070 * were set correctly. Either way is acceptable for
4071 * our purposes here.
4072 */
4073
4074 break;
4075
4076 default:
4077 dev_err(&h->pdev->dev, "unknown data direction: %d\n",
4078 cmd->sc_data_direction);
4079 BUG();
4080 break;
4081 }
4082
Stephen M. Cameron33a2ffc2010-02-25 14:03:27 -06004083 if (hpsa_scatter_gather(h, c, cmd) < 0) { /* Fill SG list */
Stephen M. Cameronedd16362009-12-08 14:09:11 -08004084 cmd_free(h, c);
4085 return SCSI_MLQUEUE_HOST_BUSY;
4086 }
4087 enqueue_cmd_and_start_io(h, c);
4088 /* the cmd'll come back via intr handler in complete_scsi_command() */
4089 return 0;
4090}
4091
Jeff Garzikf2812332010-11-16 02:10:29 -05004092static DEF_SCSI_QCMD(hpsa_scsi_queue_command)
4093
Stephen M. Cameron5f389362014-02-18 13:55:48 -06004094static int do_not_scan_if_controller_locked_up(struct ctlr_info *h)
4095{
4096 unsigned long flags;
4097
4098 /*
4099 * Don't let rescans be initiated on a controller known
4100 * to be locked up. If the controller locks up *during*
4101 * a rescan, that thread is probably hosed, but at least
4102 * we can prevent new rescan threads from piling up on a
4103 * locked up controller.
4104 */
Stephen M. Cameron094963d2014-05-29 10:53:18 -05004105 if (unlikely(lockup_detected(h))) {
Stephen M. Cameron5f389362014-02-18 13:55:48 -06004106 spin_lock_irqsave(&h->scan_lock, flags);
4107 h->scan_finished = 1;
4108 wake_up_all(&h->scan_wait_queue);
4109 spin_unlock_irqrestore(&h->scan_lock, flags);
4110 return 1;
4111 }
Stephen M. Cameron5f389362014-02-18 13:55:48 -06004112 return 0;
4113}
4114
Stephen M. Camerona08a8472010-02-04 08:43:16 -06004115static void hpsa_scan_start(struct Scsi_Host *sh)
4116{
4117 struct ctlr_info *h = shost_to_hba(sh);
4118 unsigned long flags;
4119
Stephen M. Cameron5f389362014-02-18 13:55:48 -06004120 if (do_not_scan_if_controller_locked_up(h))
4121 return;
4122
Stephen M. Camerona08a8472010-02-04 08:43:16 -06004123 /* wait until any scan already in progress is finished. */
4124 while (1) {
4125 spin_lock_irqsave(&h->scan_lock, flags);
4126 if (h->scan_finished)
4127 break;
4128 spin_unlock_irqrestore(&h->scan_lock, flags);
4129 wait_event(h->scan_wait_queue, h->scan_finished);
4130 /* Note: We don't need to worry about a race between this
4131 * thread and driver unload because the midlayer will
4132 * have incremented the reference count, so unload won't
4133 * happen if we're in here.
4134 */
4135 }
4136 h->scan_finished = 0; /* mark scan as in progress */
4137 spin_unlock_irqrestore(&h->scan_lock, flags);
4138
Stephen M. Cameron5f389362014-02-18 13:55:48 -06004139 if (do_not_scan_if_controller_locked_up(h))
4140 return;
4141
Stephen M. Camerona08a8472010-02-04 08:43:16 -06004142 hpsa_update_scsi_devices(h, h->scsi_host->host_no);
4143
4144 spin_lock_irqsave(&h->scan_lock, flags);
4145 h->scan_finished = 1; /* mark scan as finished. */
4146 wake_up_all(&h->scan_wait_queue);
4147 spin_unlock_irqrestore(&h->scan_lock, flags);
4148}
4149
4150static int hpsa_scan_finished(struct Scsi_Host *sh,
4151 unsigned long elapsed_time)
4152{
4153 struct ctlr_info *h = shost_to_hba(sh);
4154 unsigned long flags;
4155 int finished;
4156
4157 spin_lock_irqsave(&h->scan_lock, flags);
4158 finished = h->scan_finished;
4159 spin_unlock_irqrestore(&h->scan_lock, flags);
4160 return finished;
4161}
4162
Stephen M. Cameron667e23d2010-02-25 14:02:51 -06004163static int hpsa_change_queue_depth(struct scsi_device *sdev,
4164 int qdepth, int reason)
4165{
4166 struct ctlr_info *h = sdev_to_hba(sdev);
4167
4168 if (reason != SCSI_QDEPTH_DEFAULT)
4169 return -ENOTSUPP;
4170
4171 if (qdepth < 1)
4172 qdepth = 1;
4173 else
4174 if (qdepth > h->nr_cmds)
4175 qdepth = h->nr_cmds;
4176 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
4177 return sdev->queue_depth;
4178}
4179
Stephen M. Cameronedd16362009-12-08 14:09:11 -08004180static void hpsa_unregister_scsi(struct ctlr_info *h)
4181{
4182 /* we are being forcibly unloaded, and may not refuse. */
4183 scsi_remove_host(h->scsi_host);
4184 scsi_host_put(h->scsi_host);
4185 h->scsi_host = NULL;
4186}
4187
4188static int hpsa_register_scsi(struct ctlr_info *h)
4189{
Stephen M. Cameronb7056902012-01-19 14:00:53 -06004190 struct Scsi_Host *sh;
4191 int error;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08004192
Stephen M. Cameronb7056902012-01-19 14:00:53 -06004193 sh = scsi_host_alloc(&hpsa_driver_template, sizeof(h));
4194 if (sh == NULL)
4195 goto fail;
4196
4197 sh->io_port = 0;
4198 sh->n_io_port = 0;
4199 sh->this_id = -1;
4200 sh->max_channel = 3;
4201 sh->max_cmd_len = MAX_COMMAND_SIZE;
4202 sh->max_lun = HPSA_MAX_LUN;
4203 sh->max_id = HPSA_MAX_LUN;
4204 sh->can_queue = h->nr_cmds;
Stephen M. Cameron316b2212014-02-21 16:25:15 -06004205 if (h->hba_mode_enabled)
4206 sh->cmd_per_lun = 7;
4207 else
4208 sh->cmd_per_lun = h->nr_cmds;
Stephen M. Cameronb7056902012-01-19 14:00:53 -06004209 sh->sg_tablesize = h->maxsgentries;
4210 h->scsi_host = sh;
4211 sh->hostdata[0] = (unsigned long) h;
4212 sh->irq = h->intr[h->intr_mode];
4213 sh->unique_id = sh->irq;
4214 error = scsi_add_host(sh, &h->pdev->dev);
4215 if (error)
4216 goto fail_host_put;
4217 scsi_scan_host(sh);
4218 return 0;
4219
4220 fail_host_put:
4221 dev_err(&h->pdev->dev, "%s: scsi_add_host"
4222 " failed for controller %d\n", __func__, h->ctlr);
4223 scsi_host_put(sh);
4224 return error;
4225 fail:
4226 dev_err(&h->pdev->dev, "%s: scsi_host_alloc"
4227 " failed for controller %d\n", __func__, h->ctlr);
4228 return -ENOMEM;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08004229}
4230
4231static int wait_for_device_to_become_ready(struct ctlr_info *h,
4232 unsigned char lunaddr[])
4233{
Tomas Henzl89193582014-02-21 16:25:05 -06004234 int rc;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08004235 int count = 0;
4236 int waittime = 1; /* seconds */
4237 struct CommandList *c;
4238
4239 c = cmd_special_alloc(h);
4240 if (!c) {
4241 dev_warn(&h->pdev->dev, "out of memory in "
4242 "wait_for_device_to_become_ready.\n");
4243 return IO_ERROR;
4244 }
4245
4246 /* Send test unit ready until device ready, or give up. */
4247 while (count < HPSA_TUR_RETRY_LIMIT) {
4248
4249 /* Wait for a bit. do this first, because if we send
4250 * the TUR right away, the reset will just abort it.
4251 */
4252 msleep(1000 * waittime);
4253 count++;
Tomas Henzl89193582014-02-21 16:25:05 -06004254 rc = 0; /* Device ready. */
Stephen M. Cameronedd16362009-12-08 14:09:11 -08004255
4256 /* Increase wait time with each try, up to a point. */
4257 if (waittime < HPSA_MAX_WAIT_INTERVAL_SECS)
4258 waittime = waittime * 2;
4259
Stephen M. Camerona2dac132013-02-20 11:24:41 -06004260 /* Send the Test Unit Ready, fill_cmd can't fail, no mapping */
4261 (void) fill_cmd(c, TEST_UNIT_READY, h,
4262 NULL, 0, 0, lunaddr, TYPE_CMD);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08004263 hpsa_scsi_do_simple_cmd_core(h, c);
4264 /* no unmap needed here because no data xfer. */
4265
4266 if (c->err_info->CommandStatus == CMD_SUCCESS)
4267 break;
4268
4269 if (c->err_info->CommandStatus == CMD_TARGET_STATUS &&
4270 c->err_info->ScsiStatus == SAM_STAT_CHECK_CONDITION &&
4271 (c->err_info->SenseInfo[2] == NO_SENSE ||
4272 c->err_info->SenseInfo[2] == UNIT_ATTENTION))
4273 break;
4274
4275 dev_warn(&h->pdev->dev, "waiting %d secs "
4276 "for device to become ready.\n", waittime);
4277 rc = 1; /* device not ready. */
4278 }
4279
4280 if (rc)
4281 dev_warn(&h->pdev->dev, "giving up on device.\n");
4282 else
4283 dev_warn(&h->pdev->dev, "device is ready.\n");
4284
4285 cmd_special_free(h, c);
4286 return rc;
4287}
4288
4289/* Need at least one of these error handlers to keep ../scsi/hosts.c from
4290 * complaining. Doing a host- or bus-reset can't do anything good here.
4291 */
4292static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd)
4293{
4294 int rc;
4295 struct ctlr_info *h;
4296 struct hpsa_scsi_dev_t *dev;
4297
4298 /* find the controller to which the command to be aborted was sent */
4299 h = sdev_to_hba(scsicmd->device);
4300 if (h == NULL) /* paranoia */
4301 return FAILED;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08004302 dev = scsicmd->device->hostdata;
4303 if (!dev) {
4304 dev_err(&h->pdev->dev, "hpsa_eh_device_reset_handler: "
4305 "device lookup failed.\n");
4306 return FAILED;
4307 }
Stephen M. Camerond416b0c2010-02-04 08:43:21 -06004308 dev_warn(&h->pdev->dev, "resetting device %d:%d:%d:%d\n",
4309 h->scsi_host->host_no, dev->bus, dev->target, dev->lun);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08004310 /* send a reset to the SCSI LUN which the command was sent to */
Scott Teelbf711ac2014-02-18 13:56:39 -06004311 rc = hpsa_send_reset(h, dev->scsi3addr, HPSA_RESET_TYPE_LUN);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08004312 if (rc == 0 && wait_for_device_to_become_ready(h, dev->scsi3addr) == 0)
4313 return SUCCESS;
4314
4315 dev_warn(&h->pdev->dev, "resetting device failed.\n");
4316 return FAILED;
4317}
4318
Stephen M. Cameron6cba3f12012-05-01 11:42:56 -05004319static void swizzle_abort_tag(u8 *tag)
4320{
4321 u8 original_tag[8];
4322
4323 memcpy(original_tag, tag, 8);
4324 tag[0] = original_tag[3];
4325 tag[1] = original_tag[2];
4326 tag[2] = original_tag[1];
4327 tag[3] = original_tag[0];
4328 tag[4] = original_tag[7];
4329 tag[5] = original_tag[6];
4330 tag[6] = original_tag[5];
4331 tag[7] = original_tag[4];
4332}
4333
Scott Teel17eb87d2014-02-18 13:55:28 -06004334static void hpsa_get_tag(struct ctlr_info *h,
4335 struct CommandList *c, u32 *taglower, u32 *tagupper)
4336{
4337 if (c->cmd_type == CMD_IOACCEL1) {
4338 struct io_accel1_cmd *cm1 = (struct io_accel1_cmd *)
4339 &h->ioaccel_cmd_pool[c->cmdindex];
4340 *tagupper = cm1->Tag.upper;
4341 *taglower = cm1->Tag.lower;
Scott Teel54b6e9e2014-02-18 13:56:45 -06004342 return;
Scott Teel17eb87d2014-02-18 13:55:28 -06004343 }
Scott Teel54b6e9e2014-02-18 13:56:45 -06004344 if (c->cmd_type == CMD_IOACCEL2) {
4345 struct io_accel2_cmd *cm2 = (struct io_accel2_cmd *)
4346 &h->ioaccel2_cmd_pool[c->cmdindex];
Scott Teeldd0e19f2014-02-18 13:57:31 -06004347 /* upper tag not used in ioaccel2 mode */
4348 memset(tagupper, 0, sizeof(*tagupper));
4349 *taglower = cm2->Tag;
Scott Teel54b6e9e2014-02-18 13:56:45 -06004350 return;
4351 }
4352 *tagupper = c->Header.Tag.upper;
4353 *taglower = c->Header.Tag.lower;
Scott Teel17eb87d2014-02-18 13:55:28 -06004354}
4355
Scott Teel54b6e9e2014-02-18 13:56:45 -06004356
Stephen M. Cameron75167d22012-05-01 11:42:51 -05004357static int hpsa_send_abort(struct ctlr_info *h, unsigned char *scsi3addr,
Stephen M. Cameron6cba3f12012-05-01 11:42:56 -05004358 struct CommandList *abort, int swizzle)
Stephen M. Cameron75167d22012-05-01 11:42:51 -05004359{
4360 int rc = IO_OK;
4361 struct CommandList *c;
4362 struct ErrorInfo *ei;
Scott Teel17eb87d2014-02-18 13:55:28 -06004363 u32 tagupper, taglower;
Stephen M. Cameron75167d22012-05-01 11:42:51 -05004364
4365 c = cmd_special_alloc(h);
4366 if (c == NULL) { /* trouble... */
4367 dev_warn(&h->pdev->dev, "cmd_special_alloc returned NULL!\n");
4368 return -ENOMEM;
4369 }
4370
Stephen M. Camerona2dac132013-02-20 11:24:41 -06004371 /* fill_cmd can't fail here, no buffer to map */
4372 (void) fill_cmd(c, HPSA_ABORT_MSG, h, abort,
4373 0, 0, scsi3addr, TYPE_MSG);
Stephen M. Cameron6cba3f12012-05-01 11:42:56 -05004374 if (swizzle)
4375 swizzle_abort_tag(&c->Request.CDB[4]);
Stephen M. Cameron75167d22012-05-01 11:42:51 -05004376 hpsa_scsi_do_simple_cmd_core(h, c);
Scott Teel17eb87d2014-02-18 13:55:28 -06004377 hpsa_get_tag(h, abort, &taglower, &tagupper);
Stephen M. Cameron75167d22012-05-01 11:42:51 -05004378 dev_dbg(&h->pdev->dev, "%s: Tag:0x%08x:%08x: do_simple_cmd_core completed.\n",
Scott Teel17eb87d2014-02-18 13:55:28 -06004379 __func__, tagupper, taglower);
Stephen M. Cameron75167d22012-05-01 11:42:51 -05004380 /* no unmap needed here because no data xfer. */
4381
4382 ei = c->err_info;
4383 switch (ei->CommandStatus) {
4384 case CMD_SUCCESS:
4385 break;
4386 case CMD_UNABORTABLE: /* Very common, don't make noise. */
4387 rc = -1;
4388 break;
4389 default:
4390 dev_dbg(&h->pdev->dev, "%s: Tag:0x%08x:%08x: interpreting error.\n",
Scott Teel17eb87d2014-02-18 13:55:28 -06004391 __func__, tagupper, taglower);
Stephen M. Camerond1e8bea2014-02-18 13:57:47 -06004392 hpsa_scsi_interpret_error(h, c);
Stephen M. Cameron75167d22012-05-01 11:42:51 -05004393 rc = -1;
4394 break;
4395 }
4396 cmd_special_free(h, c);
Scott Teeldd0e19f2014-02-18 13:57:31 -06004397 dev_dbg(&h->pdev->dev, "%s: Tag:0x%08x:%08x: Finished.\n",
4398 __func__, tagupper, taglower);
Stephen M. Cameron75167d22012-05-01 11:42:51 -05004399 return rc;
4400}
4401
4402/*
4403 * hpsa_find_cmd_in_queue
4404 *
4405 * Used to determine whether a command (find) is still present
4406 * in queue_head. Optionally excludes the last element of queue_head.
4407 *
4408 * This is used to avoid unnecessary aborts. Commands in h->reqQ have
4409 * not yet been submitted, and so can be aborted by the driver without
4410 * sending an abort to the hardware.
4411 *
4412 * Returns pointer to command if found in queue, NULL otherwise.
4413 */
4414static struct CommandList *hpsa_find_cmd_in_queue(struct ctlr_info *h,
4415 struct scsi_cmnd *find, struct list_head *queue_head)
4416{
4417 unsigned long flags;
4418 struct CommandList *c = NULL; /* ptr into cmpQ */
4419
4420 if (!find)
4421 return 0;
4422 spin_lock_irqsave(&h->lock, flags);
4423 list_for_each_entry(c, queue_head, list) {
4424 if (c->scsi_cmd == NULL) /* e.g.: passthru ioctl */
4425 continue;
4426 if (c->scsi_cmd == find) {
4427 spin_unlock_irqrestore(&h->lock, flags);
4428 return c;
4429 }
4430 }
4431 spin_unlock_irqrestore(&h->lock, flags);
4432 return NULL;
4433}
4434
Stephen M. Cameron6cba3f12012-05-01 11:42:56 -05004435static struct CommandList *hpsa_find_cmd_in_queue_by_tag(struct ctlr_info *h,
4436 u8 *tag, struct list_head *queue_head)
4437{
4438 unsigned long flags;
4439 struct CommandList *c;
4440
4441 spin_lock_irqsave(&h->lock, flags);
4442 list_for_each_entry(c, queue_head, list) {
4443 if (memcmp(&c->Header.Tag, tag, 8) != 0)
4444 continue;
4445 spin_unlock_irqrestore(&h->lock, flags);
4446 return c;
4447 }
4448 spin_unlock_irqrestore(&h->lock, flags);
4449 return NULL;
4450}
4451
Scott Teel54b6e9e2014-02-18 13:56:45 -06004452/* ioaccel2 path firmware cannot handle abort task requests.
4453 * Change abort requests to physical target reset, and send to the
4454 * address of the physical disk used for the ioaccel 2 command.
4455 * Return 0 on success (IO_OK)
4456 * -1 on failure
4457 */
4458
4459static int hpsa_send_reset_as_abort_ioaccel2(struct ctlr_info *h,
4460 unsigned char *scsi3addr, struct CommandList *abort)
4461{
4462 int rc = IO_OK;
4463 struct scsi_cmnd *scmd; /* scsi command within request being aborted */
4464 struct hpsa_scsi_dev_t *dev; /* device to which scsi cmd was sent */
4465 unsigned char phys_scsi3addr[8]; /* addr of phys disk with volume */
4466 unsigned char *psa = &phys_scsi3addr[0];
4467
4468 /* Get a pointer to the hpsa logical device. */
4469 scmd = (struct scsi_cmnd *) abort->scsi_cmd;
4470 dev = (struct hpsa_scsi_dev_t *)(scmd->device->hostdata);
4471 if (dev == NULL) {
4472 dev_warn(&h->pdev->dev,
4473 "Cannot abort: no device pointer for command.\n");
4474 return -1; /* not abortable */
4475 }
4476
Stephen M. Cameron2ba8bfc2014-02-18 13:57:52 -06004477 if (h->raid_offload_debug > 0)
4478 dev_info(&h->pdev->dev,
4479 "Reset as abort: Abort requested on C%d:B%d:T%d:L%d scsi3addr 0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
4480 h->scsi_host->host_no, dev->bus, dev->target, dev->lun,
4481 scsi3addr[0], scsi3addr[1], scsi3addr[2], scsi3addr[3],
4482 scsi3addr[4], scsi3addr[5], scsi3addr[6], scsi3addr[7]);
4483
Scott Teel54b6e9e2014-02-18 13:56:45 -06004484 if (!dev->offload_enabled) {
4485 dev_warn(&h->pdev->dev,
4486 "Can't abort: device is not operating in HP SSD Smart Path mode.\n");
4487 return -1; /* not abortable */
4488 }
4489
4490 /* Incoming scsi3addr is logical addr. We need physical disk addr. */
4491 if (!hpsa_get_pdisk_of_ioaccel2(h, abort, psa)) {
4492 dev_warn(&h->pdev->dev, "Can't abort: Failed lookup of physical address.\n");
4493 return -1; /* not abortable */
4494 }
4495
4496 /* send the reset */
Stephen M. Cameron2ba8bfc2014-02-18 13:57:52 -06004497 if (h->raid_offload_debug > 0)
4498 dev_info(&h->pdev->dev,
4499 "Reset as abort: Resetting physical device at scsi3addr 0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
4500 psa[0], psa[1], psa[2], psa[3],
4501 psa[4], psa[5], psa[6], psa[7]);
Scott Teel54b6e9e2014-02-18 13:56:45 -06004502 rc = hpsa_send_reset(h, psa, HPSA_RESET_TYPE_TARGET);
4503 if (rc != 0) {
4504 dev_warn(&h->pdev->dev,
4505 "Reset as abort: Failed on physical device at scsi3addr 0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
4506 psa[0], psa[1], psa[2], psa[3],
4507 psa[4], psa[5], psa[6], psa[7]);
4508 return rc; /* failed to reset */
4509 }
4510
4511 /* wait for device to recover */
4512 if (wait_for_device_to_become_ready(h, psa) != 0) {
4513 dev_warn(&h->pdev->dev,
4514 "Reset as abort: Failed: Device never recovered from reset: 0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
4515 psa[0], psa[1], psa[2], psa[3],
4516 psa[4], psa[5], psa[6], psa[7]);
4517 return -1; /* failed to recover */
4518 }
4519
4520 /* device recovered */
4521 dev_info(&h->pdev->dev,
4522 "Reset as abort: Device recovered from reset: scsi3addr 0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
4523 psa[0], psa[1], psa[2], psa[3],
4524 psa[4], psa[5], psa[6], psa[7]);
4525
4526 return rc; /* success */
4527}
4528
Stephen M. Cameron6cba3f12012-05-01 11:42:56 -05004529/* Some Smart Arrays need the abort tag swizzled, and some don't. It's hard to
4530 * tell which kind we're dealing with, so we send the abort both ways. There
4531 * shouldn't be any collisions between swizzled and unswizzled tags due to the
4532 * way we construct our tags but we check anyway in case the assumptions which
4533 * make this true someday become false.
4534 */
4535static int hpsa_send_abort_both_ways(struct ctlr_info *h,
4536 unsigned char *scsi3addr, struct CommandList *abort)
4537{
4538 u8 swizzled_tag[8];
4539 struct CommandList *c;
4540 int rc = 0, rc2 = 0;
4541
Scott Teel54b6e9e2014-02-18 13:56:45 -06004542 /* ioccelerator mode 2 commands should be aborted via the
4543 * accelerated path, since RAID path is unaware of these commands,
4544 * but underlying firmware can't handle abort TMF.
4545 * Change abort to physical device reset.
4546 */
4547 if (abort->cmd_type == CMD_IOACCEL2)
4548 return hpsa_send_reset_as_abort_ioaccel2(h, scsi3addr, abort);
4549
Stephen M. Cameron6cba3f12012-05-01 11:42:56 -05004550 /* we do not expect to find the swizzled tag in our queue, but
4551 * check anyway just to be sure the assumptions which make this
4552 * the case haven't become wrong.
4553 */
4554 memcpy(swizzled_tag, &abort->Request.CDB[4], 8);
4555 swizzle_abort_tag(swizzled_tag);
4556 c = hpsa_find_cmd_in_queue_by_tag(h, swizzled_tag, &h->cmpQ);
4557 if (c != NULL) {
4558 dev_warn(&h->pdev->dev, "Unexpectedly found byte-swapped tag in completion queue.\n");
4559 return hpsa_send_abort(h, scsi3addr, abort, 0);
4560 }
4561 rc = hpsa_send_abort(h, scsi3addr, abort, 0);
4562
4563 /* if the command is still in our queue, we can't conclude that it was
4564 * aborted (it might have just completed normally) but in any case
4565 * we don't need to try to abort it another way.
4566 */
4567 c = hpsa_find_cmd_in_queue(h, abort->scsi_cmd, &h->cmpQ);
4568 if (c)
4569 rc2 = hpsa_send_abort(h, scsi3addr, abort, 1);
4570 return rc && rc2;
4571}
4572
Stephen M. Cameron75167d22012-05-01 11:42:51 -05004573/* Send an abort for the specified command.
4574 * If the device and controller support it,
4575 * send a task abort request.
4576 */
4577static int hpsa_eh_abort_handler(struct scsi_cmnd *sc)
4578{
4579
4580 int i, rc;
4581 struct ctlr_info *h;
4582 struct hpsa_scsi_dev_t *dev;
4583 struct CommandList *abort; /* pointer to command to be aborted */
4584 struct CommandList *found;
4585 struct scsi_cmnd *as; /* ptr to scsi cmd inside aborted command. */
4586 char msg[256]; /* For debug messaging. */
4587 int ml = 0;
Scott Teel17eb87d2014-02-18 13:55:28 -06004588 u32 tagupper, taglower;
Stephen M. Cameron75167d22012-05-01 11:42:51 -05004589
4590 /* Find the controller of the command to be aborted */
4591 h = sdev_to_hba(sc->device);
4592 if (WARN(h == NULL,
4593 "ABORT REQUEST FAILED, Controller lookup failed.\n"))
4594 return FAILED;
4595
4596 /* Check that controller supports some kind of task abort */
4597 if (!(HPSATMF_PHYS_TASK_ABORT & h->TMFSupportFlags) &&
4598 !(HPSATMF_LOG_TASK_ABORT & h->TMFSupportFlags))
4599 return FAILED;
4600
4601 memset(msg, 0, sizeof(msg));
4602 ml += sprintf(msg+ml, "ABORT REQUEST on C%d:B%d:T%d:L%d ",
4603 h->scsi_host->host_no, sc->device->channel,
4604 sc->device->id, sc->device->lun);
4605
4606 /* Find the device of the command to be aborted */
4607 dev = sc->device->hostdata;
4608 if (!dev) {
4609 dev_err(&h->pdev->dev, "%s FAILED, Device lookup failed.\n",
4610 msg);
4611 return FAILED;
4612 }
4613
4614 /* Get SCSI command to be aborted */
4615 abort = (struct CommandList *) sc->host_scribble;
4616 if (abort == NULL) {
4617 dev_err(&h->pdev->dev, "%s FAILED, Command to abort is NULL.\n",
4618 msg);
4619 return FAILED;
4620 }
Scott Teel17eb87d2014-02-18 13:55:28 -06004621 hpsa_get_tag(h, abort, &taglower, &tagupper);
4622 ml += sprintf(msg+ml, "Tag:0x%08x:%08x ", tagupper, taglower);
Stephen M. Cameron75167d22012-05-01 11:42:51 -05004623 as = (struct scsi_cmnd *) abort->scsi_cmd;
4624 if (as != NULL)
4625 ml += sprintf(msg+ml, "Command:0x%x SN:0x%lx ",
4626 as->cmnd[0], as->serial_number);
4627 dev_dbg(&h->pdev->dev, "%s\n", msg);
4628 dev_warn(&h->pdev->dev, "Abort request on C%d:B%d:T%d:L%d\n",
4629 h->scsi_host->host_no, dev->bus, dev->target, dev->lun);
4630
4631 /* Search reqQ to See if command is queued but not submitted,
4632 * if so, complete the command with aborted status and remove
4633 * it from the reqQ.
4634 */
4635 found = hpsa_find_cmd_in_queue(h, sc, &h->reqQ);
4636 if (found) {
4637 found->err_info->CommandStatus = CMD_ABORTED;
4638 finish_cmd(found);
4639 dev_info(&h->pdev->dev, "%s Request SUCCEEDED (driver queue).\n",
4640 msg);
4641 return SUCCESS;
4642 }
4643
4644 /* not in reqQ, if also not in cmpQ, must have already completed */
4645 found = hpsa_find_cmd_in_queue(h, sc, &h->cmpQ);
4646 if (!found) {
Stephen M. Camerond6ebd0f2012-07-26 11:34:17 -05004647 dev_dbg(&h->pdev->dev, "%s Request SUCCEEDED (not known to driver).\n",
Stephen M. Cameron75167d22012-05-01 11:42:51 -05004648 msg);
4649 return SUCCESS;
4650 }
4651
4652 /*
4653 * Command is in flight, or possibly already completed
4654 * by the firmware (but not to the scsi mid layer) but we can't
4655 * distinguish which. Send the abort down.
4656 */
Stephen M. Cameron6cba3f12012-05-01 11:42:56 -05004657 rc = hpsa_send_abort_both_ways(h, dev->scsi3addr, abort);
Stephen M. Cameron75167d22012-05-01 11:42:51 -05004658 if (rc != 0) {
4659 dev_dbg(&h->pdev->dev, "%s Request FAILED.\n", msg);
4660 dev_warn(&h->pdev->dev, "FAILED abort on device C%d:B%d:T%d:L%d\n",
4661 h->scsi_host->host_no,
4662 dev->bus, dev->target, dev->lun);
4663 return FAILED;
4664 }
4665 dev_info(&h->pdev->dev, "%s REQUEST SUCCEEDED.\n", msg);
4666
4667 /* If the abort(s) above completed and actually aborted the
4668 * command, then the command to be aborted should already be
4669 * completed. If not, wait around a bit more to see if they
4670 * manage to complete normally.
4671 */
4672#define ABORT_COMPLETE_WAIT_SECS 30
4673 for (i = 0; i < ABORT_COMPLETE_WAIT_SECS * 10; i++) {
4674 found = hpsa_find_cmd_in_queue(h, sc, &h->cmpQ);
4675 if (!found)
4676 return SUCCESS;
4677 msleep(100);
4678 }
4679 dev_warn(&h->pdev->dev, "%s FAILED. Aborted command has not completed after %d seconds.\n",
4680 msg, ABORT_COMPLETE_WAIT_SECS);
4681 return FAILED;
4682}
4683
4684
Stephen M. Cameronedd16362009-12-08 14:09:11 -08004685/*
4686 * For operations that cannot sleep, a command block is allocated at init,
4687 * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track
4688 * which ones are free or in use. Lock must be held when calling this.
4689 * cmd_free() is the complement.
4690 */
4691static struct CommandList *cmd_alloc(struct ctlr_info *h)
4692{
4693 struct CommandList *c;
4694 int i;
4695 union u64bit temp64;
4696 dma_addr_t cmd_dma_handle, err_dma_handle;
Matt Gatese16a33a2012-05-01 11:43:11 -05004697 unsigned long flags;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08004698
Matt Gatese16a33a2012-05-01 11:43:11 -05004699 spin_lock_irqsave(&h->lock, flags);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08004700 do {
4701 i = find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds);
Matt Gatese16a33a2012-05-01 11:43:11 -05004702 if (i == h->nr_cmds) {
4703 spin_unlock_irqrestore(&h->lock, flags);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08004704 return NULL;
Matt Gatese16a33a2012-05-01 11:43:11 -05004705 }
Stephen M. Cameronedd16362009-12-08 14:09:11 -08004706 } while (test_and_set_bit
4707 (i & (BITS_PER_LONG - 1),
4708 h->cmd_pool_bits + (i / BITS_PER_LONG)) != 0);
Matt Gatese16a33a2012-05-01 11:43:11 -05004709 spin_unlock_irqrestore(&h->lock, flags);
4710
Stephen M. Cameronedd16362009-12-08 14:09:11 -08004711 c = h->cmd_pool + i;
4712 memset(c, 0, sizeof(*c));
4713 cmd_dma_handle = h->cmd_pool_dhandle
4714 + i * sizeof(*c);
4715 c->err_info = h->errinfo_pool + i;
4716 memset(c->err_info, 0, sizeof(*c->err_info));
4717 err_dma_handle = h->errinfo_pool_dhandle
4718 + i * sizeof(*c->err_info);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08004719
4720 c->cmdindex = i;
4721
Stephen M. Cameron9e0fc7642011-02-15 15:32:48 -06004722 INIT_LIST_HEAD(&c->list);
Stephen M. Cameron01a02ff2010-02-04 08:41:33 -06004723 c->busaddr = (u32) cmd_dma_handle;
4724 temp64.val = (u64) err_dma_handle;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08004725 c->ErrDesc.Addr.lower = temp64.val32.lower;
4726 c->ErrDesc.Addr.upper = temp64.val32.upper;
4727 c->ErrDesc.Len = sizeof(*c->err_info);
4728
4729 c->h = h;
4730 return c;
4731}
4732
4733/* For operations that can wait for kmalloc to possibly sleep,
4734 * this routine can be called. Lock need not be held to call
4735 * cmd_special_alloc. cmd_special_free() is the complement.
4736 */
4737static struct CommandList *cmd_special_alloc(struct ctlr_info *h)
4738{
4739 struct CommandList *c;
4740 union u64bit temp64;
4741 dma_addr_t cmd_dma_handle, err_dma_handle;
4742
4743 c = pci_alloc_consistent(h->pdev, sizeof(*c), &cmd_dma_handle);
4744 if (c == NULL)
4745 return NULL;
4746 memset(c, 0, sizeof(*c));
4747
Matt Gatese1f7de02014-02-18 13:55:17 -06004748 c->cmd_type = CMD_SCSI;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08004749 c->cmdindex = -1;
4750
4751 c->err_info = pci_alloc_consistent(h->pdev, sizeof(*c->err_info),
4752 &err_dma_handle);
4753
4754 if (c->err_info == NULL) {
4755 pci_free_consistent(h->pdev,
4756 sizeof(*c), c, cmd_dma_handle);
4757 return NULL;
4758 }
4759 memset(c->err_info, 0, sizeof(*c->err_info));
4760
Stephen M. Cameron9e0fc7642011-02-15 15:32:48 -06004761 INIT_LIST_HEAD(&c->list);
Stephen M. Cameron01a02ff2010-02-04 08:41:33 -06004762 c->busaddr = (u32) cmd_dma_handle;
4763 temp64.val = (u64) err_dma_handle;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08004764 c->ErrDesc.Addr.lower = temp64.val32.lower;
4765 c->ErrDesc.Addr.upper = temp64.val32.upper;
4766 c->ErrDesc.Len = sizeof(*c->err_info);
4767
4768 c->h = h;
4769 return c;
4770}
4771
4772static void cmd_free(struct ctlr_info *h, struct CommandList *c)
4773{
4774 int i;
Matt Gatese16a33a2012-05-01 11:43:11 -05004775 unsigned long flags;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08004776
4777 i = c - h->cmd_pool;
Matt Gatese16a33a2012-05-01 11:43:11 -05004778 spin_lock_irqsave(&h->lock, flags);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08004779 clear_bit(i & (BITS_PER_LONG - 1),
4780 h->cmd_pool_bits + (i / BITS_PER_LONG));
Matt Gatese16a33a2012-05-01 11:43:11 -05004781 spin_unlock_irqrestore(&h->lock, flags);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08004782}
4783
4784static void cmd_special_free(struct ctlr_info *h, struct CommandList *c)
4785{
4786 union u64bit temp64;
4787
4788 temp64.val32.lower = c->ErrDesc.Addr.lower;
4789 temp64.val32.upper = c->ErrDesc.Addr.upper;
4790 pci_free_consistent(h->pdev, sizeof(*c->err_info),
4791 c->err_info, (dma_addr_t) temp64.val);
4792 pci_free_consistent(h->pdev, sizeof(*c),
Stephen M. Camerond896f3f2011-01-06 14:47:53 -06004793 c, (dma_addr_t) (c->busaddr & DIRECT_LOOKUP_MASK));
Stephen M. Cameronedd16362009-12-08 14:09:11 -08004794}
4795
4796#ifdef CONFIG_COMPAT
4797
Stephen M. Cameronedd16362009-12-08 14:09:11 -08004798static int hpsa_ioctl32_passthru(struct scsi_device *dev, int cmd, void *arg)
4799{
4800 IOCTL32_Command_struct __user *arg32 =
4801 (IOCTL32_Command_struct __user *) arg;
4802 IOCTL_Command_struct arg64;
4803 IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64));
4804 int err;
4805 u32 cp;
4806
Vasiliy Kulikov938abd82011-01-07 10:55:53 -06004807 memset(&arg64, 0, sizeof(arg64));
Stephen M. Cameronedd16362009-12-08 14:09:11 -08004808 err = 0;
4809 err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info,
4810 sizeof(arg64.LUN_info));
4811 err |= copy_from_user(&arg64.Request, &arg32->Request,
4812 sizeof(arg64.Request));
4813 err |= copy_from_user(&arg64.error_info, &arg32->error_info,
4814 sizeof(arg64.error_info));
4815 err |= get_user(arg64.buf_size, &arg32->buf_size);
4816 err |= get_user(cp, &arg32->buf);
4817 arg64.buf = compat_ptr(cp);
4818 err |= copy_to_user(p, &arg64, sizeof(arg64));
4819
4820 if (err)
4821 return -EFAULT;
4822
Stephen M. Camerone39eeae2010-02-04 08:43:46 -06004823 err = hpsa_ioctl(dev, CCISS_PASSTHRU, (void *)p);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08004824 if (err)
4825 return err;
4826 err |= copy_in_user(&arg32->error_info, &p->error_info,
4827 sizeof(arg32->error_info));
4828 if (err)
4829 return -EFAULT;
4830 return err;
4831}
4832
4833static int hpsa_ioctl32_big_passthru(struct scsi_device *dev,
4834 int cmd, void *arg)
4835{
4836 BIG_IOCTL32_Command_struct __user *arg32 =
4837 (BIG_IOCTL32_Command_struct __user *) arg;
4838 BIG_IOCTL_Command_struct arg64;
4839 BIG_IOCTL_Command_struct __user *p =
4840 compat_alloc_user_space(sizeof(arg64));
4841 int err;
4842 u32 cp;
4843
Vasiliy Kulikov938abd82011-01-07 10:55:53 -06004844 memset(&arg64, 0, sizeof(arg64));
Stephen M. Cameronedd16362009-12-08 14:09:11 -08004845 err = 0;
4846 err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info,
4847 sizeof(arg64.LUN_info));
4848 err |= copy_from_user(&arg64.Request, &arg32->Request,
4849 sizeof(arg64.Request));
4850 err |= copy_from_user(&arg64.error_info, &arg32->error_info,
4851 sizeof(arg64.error_info));
4852 err |= get_user(arg64.buf_size, &arg32->buf_size);
4853 err |= get_user(arg64.malloc_size, &arg32->malloc_size);
4854 err |= get_user(cp, &arg32->buf);
4855 arg64.buf = compat_ptr(cp);
4856 err |= copy_to_user(p, &arg64, sizeof(arg64));
4857
4858 if (err)
4859 return -EFAULT;
4860
Stephen M. Camerone39eeae2010-02-04 08:43:46 -06004861 err = hpsa_ioctl(dev, CCISS_BIG_PASSTHRU, (void *)p);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08004862 if (err)
4863 return err;
4864 err |= copy_in_user(&arg32->error_info, &p->error_info,
4865 sizeof(arg32->error_info));
4866 if (err)
4867 return -EFAULT;
4868 return err;
4869}
Stephen M. Cameron71fe75a2010-02-04 08:43:51 -06004870
4871static int hpsa_compat_ioctl(struct scsi_device *dev, int cmd, void *arg)
4872{
4873 switch (cmd) {
4874 case CCISS_GETPCIINFO:
4875 case CCISS_GETINTINFO:
4876 case CCISS_SETINTINFO:
4877 case CCISS_GETNODENAME:
4878 case CCISS_SETNODENAME:
4879 case CCISS_GETHEARTBEAT:
4880 case CCISS_GETBUSTYPES:
4881 case CCISS_GETFIRMVER:
4882 case CCISS_GETDRIVVER:
4883 case CCISS_REVALIDVOLS:
4884 case CCISS_DEREGDISK:
4885 case CCISS_REGNEWDISK:
4886 case CCISS_REGNEWD:
4887 case CCISS_RESCANDISK:
4888 case CCISS_GETLUNINFO:
4889 return hpsa_ioctl(dev, cmd, arg);
4890
4891 case CCISS_PASSTHRU32:
4892 return hpsa_ioctl32_passthru(dev, cmd, arg);
4893 case CCISS_BIG_PASSTHRU32:
4894 return hpsa_ioctl32_big_passthru(dev, cmd, arg);
4895
4896 default:
4897 return -ENOIOCTLCMD;
4898 }
4899}
Stephen M. Cameronedd16362009-12-08 14:09:11 -08004900#endif
4901
4902static int hpsa_getpciinfo_ioctl(struct ctlr_info *h, void __user *argp)
4903{
4904 struct hpsa_pci_info pciinfo;
4905
4906 if (!argp)
4907 return -EINVAL;
4908 pciinfo.domain = pci_domain_nr(h->pdev->bus);
4909 pciinfo.bus = h->pdev->bus->number;
4910 pciinfo.dev_fn = h->pdev->devfn;
4911 pciinfo.board_id = h->board_id;
4912 if (copy_to_user(argp, &pciinfo, sizeof(pciinfo)))
4913 return -EFAULT;
4914 return 0;
4915}
4916
4917static int hpsa_getdrivver_ioctl(struct ctlr_info *h, void __user *argp)
4918{
4919 DriverVer_type DriverVer;
4920 unsigned char vmaj, vmin, vsubmin;
4921 int rc;
4922
4923 rc = sscanf(HPSA_DRIVER_VERSION, "%hhu.%hhu.%hhu",
4924 &vmaj, &vmin, &vsubmin);
4925 if (rc != 3) {
4926 dev_info(&h->pdev->dev, "driver version string '%s' "
4927 "unrecognized.", HPSA_DRIVER_VERSION);
4928 vmaj = 0;
4929 vmin = 0;
4930 vsubmin = 0;
4931 }
4932 DriverVer = (vmaj << 16) | (vmin << 8) | vsubmin;
4933 if (!argp)
4934 return -EINVAL;
4935 if (copy_to_user(argp, &DriverVer, sizeof(DriverVer_type)))
4936 return -EFAULT;
4937 return 0;
4938}
4939
4940static int hpsa_passthru_ioctl(struct ctlr_info *h, void __user *argp)
4941{
4942 IOCTL_Command_struct iocommand;
4943 struct CommandList *c;
4944 char *buff = NULL;
4945 union u64bit temp64;
Stephen M. Cameronc1f63c82013-02-20 11:24:52 -06004946 int rc = 0;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08004947
4948 if (!argp)
4949 return -EINVAL;
4950 if (!capable(CAP_SYS_RAWIO))
4951 return -EPERM;
4952 if (copy_from_user(&iocommand, argp, sizeof(iocommand)))
4953 return -EFAULT;
4954 if ((iocommand.buf_size < 1) &&
4955 (iocommand.Request.Type.Direction != XFER_NONE)) {
4956 return -EINVAL;
4957 }
4958 if (iocommand.buf_size > 0) {
4959 buff = kmalloc(iocommand.buf_size, GFP_KERNEL);
4960 if (buff == NULL)
4961 return -EFAULT;
Stephen M. Cameron9233fb12014-05-29 10:52:41 -05004962 if (iocommand.Request.Type.Direction & XFER_WRITE) {
Stephen M. Cameronb03a7772011-01-06 14:47:48 -06004963 /* Copy the data into the buffer we created */
4964 if (copy_from_user(buff, iocommand.buf,
4965 iocommand.buf_size)) {
Stephen M. Cameronc1f63c82013-02-20 11:24:52 -06004966 rc = -EFAULT;
4967 goto out_kfree;
Stephen M. Cameronb03a7772011-01-06 14:47:48 -06004968 }
4969 } else {
4970 memset(buff, 0, iocommand.buf_size);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08004971 }
Stephen M. Cameronb03a7772011-01-06 14:47:48 -06004972 }
Stephen M. Cameronedd16362009-12-08 14:09:11 -08004973 c = cmd_special_alloc(h);
4974 if (c == NULL) {
Stephen M. Cameronc1f63c82013-02-20 11:24:52 -06004975 rc = -ENOMEM;
4976 goto out_kfree;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08004977 }
4978 /* Fill in the command type */
4979 c->cmd_type = CMD_IOCTL_PEND;
4980 /* Fill in Command Header */
4981 c->Header.ReplyQueue = 0; /* unused in simple mode */
4982 if (iocommand.buf_size > 0) { /* buffer to fill */
4983 c->Header.SGList = 1;
4984 c->Header.SGTotal = 1;
4985 } else { /* no buffers to fill */
4986 c->Header.SGList = 0;
4987 c->Header.SGTotal = 0;
4988 }
4989 memcpy(&c->Header.LUN, &iocommand.LUN_info, sizeof(c->Header.LUN));
4990 /* use the kernel address the cmd block for tag */
4991 c->Header.Tag.lower = c->busaddr;
4992
4993 /* Fill in Request block */
4994 memcpy(&c->Request, &iocommand.Request,
4995 sizeof(c->Request));
4996
4997 /* Fill in the scatter gather information */
4998 if (iocommand.buf_size > 0) {
4999 temp64.val = pci_map_single(h->pdev, buff,
5000 iocommand.buf_size, PCI_DMA_BIDIRECTIONAL);
Stephen M. Cameronbcc48ff2013-02-20 11:24:57 -06005001 if (dma_mapping_error(&h->pdev->dev, temp64.val)) {
5002 c->SG[0].Addr.lower = 0;
5003 c->SG[0].Addr.upper = 0;
5004 c->SG[0].Len = 0;
5005 rc = -ENOMEM;
5006 goto out;
5007 }
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005008 c->SG[0].Addr.lower = temp64.val32.lower;
5009 c->SG[0].Addr.upper = temp64.val32.upper;
5010 c->SG[0].Len = iocommand.buf_size;
Matt Gatese1d9cbf2014-02-18 13:55:12 -06005011 c->SG[0].Ext = HPSA_SG_LAST; /* we are not chaining*/
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005012 }
Stephen M. Camerona0c12412011-10-26 16:22:04 -05005013 hpsa_scsi_do_simple_cmd_core_if_no_lockup(h, c);
Stephen M. Cameronc2dd32e2011-06-03 09:57:29 -05005014 if (iocommand.buf_size > 0)
5015 hpsa_pci_unmap(h->pdev, c, 1, PCI_DMA_BIDIRECTIONAL);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005016 check_ioctl_unit_attention(h, c);
5017
5018 /* Copy the error information out */
5019 memcpy(&iocommand.error_info, c->err_info,
5020 sizeof(iocommand.error_info));
5021 if (copy_to_user(argp, &iocommand, sizeof(iocommand))) {
Stephen M. Cameronc1f63c82013-02-20 11:24:52 -06005022 rc = -EFAULT;
5023 goto out;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005024 }
Stephen M. Cameron9233fb12014-05-29 10:52:41 -05005025 if ((iocommand.Request.Type.Direction & XFER_READ) &&
Stephen M. Cameronb03a7772011-01-06 14:47:48 -06005026 iocommand.buf_size > 0) {
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005027 /* Copy the data out of the buffer we created */
5028 if (copy_to_user(iocommand.buf, buff, iocommand.buf_size)) {
Stephen M. Cameronc1f63c82013-02-20 11:24:52 -06005029 rc = -EFAULT;
5030 goto out;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005031 }
5032 }
Stephen M. Cameronc1f63c82013-02-20 11:24:52 -06005033out:
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005034 cmd_special_free(h, c);
Stephen M. Cameronc1f63c82013-02-20 11:24:52 -06005035out_kfree:
5036 kfree(buff);
5037 return rc;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005038}
5039
5040static int hpsa_big_passthru_ioctl(struct ctlr_info *h, void __user *argp)
5041{
5042 BIG_IOCTL_Command_struct *ioc;
5043 struct CommandList *c;
5044 unsigned char **buff = NULL;
5045 int *buff_size = NULL;
5046 union u64bit temp64;
5047 BYTE sg_used = 0;
5048 int status = 0;
5049 int i;
Stephen M. Cameron01a02ff2010-02-04 08:41:33 -06005050 u32 left;
5051 u32 sz;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005052 BYTE __user *data_ptr;
5053
5054 if (!argp)
5055 return -EINVAL;
5056 if (!capable(CAP_SYS_RAWIO))
5057 return -EPERM;
5058 ioc = (BIG_IOCTL_Command_struct *)
5059 kmalloc(sizeof(*ioc), GFP_KERNEL);
5060 if (!ioc) {
5061 status = -ENOMEM;
5062 goto cleanup1;
5063 }
5064 if (copy_from_user(ioc, argp, sizeof(*ioc))) {
5065 status = -EFAULT;
5066 goto cleanup1;
5067 }
5068 if ((ioc->buf_size < 1) &&
5069 (ioc->Request.Type.Direction != XFER_NONE)) {
5070 status = -EINVAL;
5071 goto cleanup1;
5072 }
5073 /* Check kmalloc limits using all SGs */
5074 if (ioc->malloc_size > MAX_KMALLOC_SIZE) {
5075 status = -EINVAL;
5076 goto cleanup1;
5077 }
Stephen M. Camerond66ae082012-01-19 14:00:48 -06005078 if (ioc->buf_size > ioc->malloc_size * SG_ENTRIES_IN_CMD) {
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005079 status = -EINVAL;
5080 goto cleanup1;
5081 }
Stephen M. Camerond66ae082012-01-19 14:00:48 -06005082 buff = kzalloc(SG_ENTRIES_IN_CMD * sizeof(char *), GFP_KERNEL);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005083 if (!buff) {
5084 status = -ENOMEM;
5085 goto cleanup1;
5086 }
Stephen M. Camerond66ae082012-01-19 14:00:48 -06005087 buff_size = kmalloc(SG_ENTRIES_IN_CMD * sizeof(int), GFP_KERNEL);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005088 if (!buff_size) {
5089 status = -ENOMEM;
5090 goto cleanup1;
5091 }
5092 left = ioc->buf_size;
5093 data_ptr = ioc->buf;
5094 while (left) {
5095 sz = (left > ioc->malloc_size) ? ioc->malloc_size : left;
5096 buff_size[sg_used] = sz;
5097 buff[sg_used] = kmalloc(sz, GFP_KERNEL);
5098 if (buff[sg_used] == NULL) {
5099 status = -ENOMEM;
5100 goto cleanup1;
5101 }
Stephen M. Cameron9233fb12014-05-29 10:52:41 -05005102 if (ioc->Request.Type.Direction & XFER_WRITE) {
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005103 if (copy_from_user(buff[sg_used], data_ptr, sz)) {
5104 status = -ENOMEM;
5105 goto cleanup1;
5106 }
5107 } else
5108 memset(buff[sg_used], 0, sz);
5109 left -= sz;
5110 data_ptr += sz;
5111 sg_used++;
5112 }
5113 c = cmd_special_alloc(h);
5114 if (c == NULL) {
5115 status = -ENOMEM;
5116 goto cleanup1;
5117 }
5118 c->cmd_type = CMD_IOCTL_PEND;
5119 c->Header.ReplyQueue = 0;
Stephen M. Cameronb03a7772011-01-06 14:47:48 -06005120 c->Header.SGList = c->Header.SGTotal = sg_used;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005121 memcpy(&c->Header.LUN, &ioc->LUN_info, sizeof(c->Header.LUN));
5122 c->Header.Tag.lower = c->busaddr;
5123 memcpy(&c->Request, &ioc->Request, sizeof(c->Request));
5124 if (ioc->buf_size > 0) {
5125 int i;
5126 for (i = 0; i < sg_used; i++) {
5127 temp64.val = pci_map_single(h->pdev, buff[i],
5128 buff_size[i], PCI_DMA_BIDIRECTIONAL);
Stephen M. Cameronbcc48ff2013-02-20 11:24:57 -06005129 if (dma_mapping_error(&h->pdev->dev, temp64.val)) {
5130 c->SG[i].Addr.lower = 0;
5131 c->SG[i].Addr.upper = 0;
5132 c->SG[i].Len = 0;
5133 hpsa_pci_unmap(h->pdev, c, i,
5134 PCI_DMA_BIDIRECTIONAL);
5135 status = -ENOMEM;
Stephen M. Camerone2d4a1f2013-09-23 13:33:51 -05005136 goto cleanup0;
Stephen M. Cameronbcc48ff2013-02-20 11:24:57 -06005137 }
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005138 c->SG[i].Addr.lower = temp64.val32.lower;
5139 c->SG[i].Addr.upper = temp64.val32.upper;
5140 c->SG[i].Len = buff_size[i];
Matt Gatese1d9cbf2014-02-18 13:55:12 -06005141 c->SG[i].Ext = i < sg_used - 1 ? 0 : HPSA_SG_LAST;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005142 }
5143 }
Stephen M. Camerona0c12412011-10-26 16:22:04 -05005144 hpsa_scsi_do_simple_cmd_core_if_no_lockup(h, c);
Stephen M. Cameronb03a7772011-01-06 14:47:48 -06005145 if (sg_used)
5146 hpsa_pci_unmap(h->pdev, c, sg_used, PCI_DMA_BIDIRECTIONAL);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005147 check_ioctl_unit_attention(h, c);
5148 /* Copy the error information out */
5149 memcpy(&ioc->error_info, c->err_info, sizeof(ioc->error_info));
5150 if (copy_to_user(argp, ioc, sizeof(*ioc))) {
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005151 status = -EFAULT;
Stephen M. Camerone2d4a1f2013-09-23 13:33:51 -05005152 goto cleanup0;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005153 }
Stephen M. Cameron9233fb12014-05-29 10:52:41 -05005154 if ((ioc->Request.Type.Direction & XFER_READ) && ioc->buf_size > 0) {
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005155 /* Copy the data out of the buffer we created */
5156 BYTE __user *ptr = ioc->buf;
5157 for (i = 0; i < sg_used; i++) {
5158 if (copy_to_user(ptr, buff[i], buff_size[i])) {
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005159 status = -EFAULT;
Stephen M. Camerone2d4a1f2013-09-23 13:33:51 -05005160 goto cleanup0;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005161 }
5162 ptr += buff_size[i];
5163 }
5164 }
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005165 status = 0;
Stephen M. Camerone2d4a1f2013-09-23 13:33:51 -05005166cleanup0:
5167 cmd_special_free(h, c);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005168cleanup1:
5169 if (buff) {
5170 for (i = 0; i < sg_used; i++)
5171 kfree(buff[i]);
5172 kfree(buff);
5173 }
5174 kfree(buff_size);
5175 kfree(ioc);
5176 return status;
5177}
5178
5179static void check_ioctl_unit_attention(struct ctlr_info *h,
5180 struct CommandList *c)
5181{
5182 if (c->err_info->CommandStatus == CMD_TARGET_STATUS &&
5183 c->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION)
5184 (void) check_for_unit_attention(h, c);
5185}
Stephen M. Cameron0390f0c2013-09-23 13:34:12 -05005186
5187static int increment_passthru_count(struct ctlr_info *h)
5188{
5189 unsigned long flags;
5190
5191 spin_lock_irqsave(&h->passthru_count_lock, flags);
5192 if (h->passthru_count >= HPSA_MAX_CONCURRENT_PASSTHRUS) {
5193 spin_unlock_irqrestore(&h->passthru_count_lock, flags);
5194 return -1;
5195 }
5196 h->passthru_count++;
5197 spin_unlock_irqrestore(&h->passthru_count_lock, flags);
5198 return 0;
5199}
5200
5201static void decrement_passthru_count(struct ctlr_info *h)
5202{
5203 unsigned long flags;
5204
5205 spin_lock_irqsave(&h->passthru_count_lock, flags);
5206 if (h->passthru_count <= 0) {
5207 spin_unlock_irqrestore(&h->passthru_count_lock, flags);
5208 /* not expecting to get here. */
5209 dev_warn(&h->pdev->dev, "Bug detected, passthru_count seems to be incorrect.\n");
5210 return;
5211 }
5212 h->passthru_count--;
5213 spin_unlock_irqrestore(&h->passthru_count_lock, flags);
5214}
5215
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005216/*
5217 * ioctl
5218 */
5219static int hpsa_ioctl(struct scsi_device *dev, int cmd, void *arg)
5220{
5221 struct ctlr_info *h;
5222 void __user *argp = (void __user *)arg;
Stephen M. Cameron0390f0c2013-09-23 13:34:12 -05005223 int rc;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005224
5225 h = sdev_to_hba(dev);
5226
5227 switch (cmd) {
5228 case CCISS_DEREGDISK:
5229 case CCISS_REGNEWDISK:
5230 case CCISS_REGNEWD:
Stephen M. Camerona08a8472010-02-04 08:43:16 -06005231 hpsa_scan_start(h->scsi_host);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005232 return 0;
5233 case CCISS_GETPCIINFO:
5234 return hpsa_getpciinfo_ioctl(h, argp);
5235 case CCISS_GETDRIVVER:
5236 return hpsa_getdrivver_ioctl(h, argp);
5237 case CCISS_PASSTHRU:
Stephen M. Cameron0390f0c2013-09-23 13:34:12 -05005238 if (increment_passthru_count(h))
5239 return -EAGAIN;
5240 rc = hpsa_passthru_ioctl(h, argp);
5241 decrement_passthru_count(h);
5242 return rc;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005243 case CCISS_BIG_PASSTHRU:
Stephen M. Cameron0390f0c2013-09-23 13:34:12 -05005244 if (increment_passthru_count(h))
5245 return -EAGAIN;
5246 rc = hpsa_big_passthru_ioctl(h, argp);
5247 decrement_passthru_count(h);
5248 return rc;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005249 default:
5250 return -ENOTTY;
5251 }
5252}
5253
Greg Kroah-Hartman6f039792012-12-21 13:08:55 -08005254static int hpsa_send_host_reset(struct ctlr_info *h, unsigned char *scsi3addr,
5255 u8 reset_type)
Stephen M. Cameron64670ac2011-05-03 14:59:51 -05005256{
5257 struct CommandList *c;
5258
5259 c = cmd_alloc(h);
5260 if (!c)
5261 return -ENOMEM;
Stephen M. Camerona2dac132013-02-20 11:24:41 -06005262 /* fill_cmd can't fail here, no data buffer to map */
5263 (void) fill_cmd(c, HPSA_DEVICE_RESET_MSG, h, NULL, 0, 0,
Stephen M. Cameron64670ac2011-05-03 14:59:51 -05005264 RAID_CTLR_LUNID, TYPE_MSG);
5265 c->Request.CDB[1] = reset_type; /* fill_cmd defaults to target reset */
5266 c->waiting = NULL;
5267 enqueue_cmd_and_start_io(h, c);
5268 /* Don't wait for completion, the reset won't complete. Don't free
5269 * the command either. This is the last command we will send before
5270 * re-initializing everything, so it doesn't matter and won't leak.
5271 */
5272 return 0;
5273}
5274
Stephen M. Camerona2dac132013-02-20 11:24:41 -06005275static int fill_cmd(struct CommandList *c, u8 cmd, struct ctlr_info *h,
Stephen M. Cameronb7bb24e2014-02-18 13:57:11 -06005276 void *buff, size_t size, u16 page_code, unsigned char *scsi3addr,
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005277 int cmd_type)
5278{
5279 int pci_dir = XFER_NONE;
Stephen M. Cameron75167d22012-05-01 11:42:51 -05005280 struct CommandList *a; /* for commands to be aborted */
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005281
5282 c->cmd_type = CMD_IOCTL_PEND;
5283 c->Header.ReplyQueue = 0;
5284 if (buff != NULL && size > 0) {
5285 c->Header.SGList = 1;
5286 c->Header.SGTotal = 1;
5287 } else {
5288 c->Header.SGList = 0;
5289 c->Header.SGTotal = 0;
5290 }
5291 c->Header.Tag.lower = c->busaddr;
5292 memcpy(c->Header.LUN.LunAddrBytes, scsi3addr, 8);
5293
5294 c->Request.Type.Type = cmd_type;
5295 if (cmd_type == TYPE_CMD) {
5296 switch (cmd) {
5297 case HPSA_INQUIRY:
5298 /* are we trying to read a vital product page */
Stephen M. Cameronb7bb24e2014-02-18 13:57:11 -06005299 if (page_code & VPD_PAGE) {
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005300 c->Request.CDB[1] = 0x01;
Stephen M. Cameronb7bb24e2014-02-18 13:57:11 -06005301 c->Request.CDB[2] = (page_code & 0xff);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005302 }
5303 c->Request.CDBLen = 6;
5304 c->Request.Type.Attribute = ATTR_SIMPLE;
5305 c->Request.Type.Direction = XFER_READ;
5306 c->Request.Timeout = 0;
5307 c->Request.CDB[0] = HPSA_INQUIRY;
5308 c->Request.CDB[4] = size & 0xFF;
5309 break;
5310 case HPSA_REPORT_LOG:
5311 case HPSA_REPORT_PHYS:
5312 /* Talking to controller so It's a physical command
5313 mode = 00 target = 0. Nothing to write.
5314 */
5315 c->Request.CDBLen = 12;
5316 c->Request.Type.Attribute = ATTR_SIMPLE;
5317 c->Request.Type.Direction = XFER_READ;
5318 c->Request.Timeout = 0;
5319 c->Request.CDB[0] = cmd;
5320 c->Request.CDB[6] = (size >> 24) & 0xFF; /* MSB */
5321 c->Request.CDB[7] = (size >> 16) & 0xFF;
5322 c->Request.CDB[8] = (size >> 8) & 0xFF;
5323 c->Request.CDB[9] = size & 0xFF;
5324 break;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005325 case HPSA_CACHE_FLUSH:
5326 c->Request.CDBLen = 12;
5327 c->Request.Type.Attribute = ATTR_SIMPLE;
5328 c->Request.Type.Direction = XFER_WRITE;
5329 c->Request.Timeout = 0;
5330 c->Request.CDB[0] = BMIC_WRITE;
5331 c->Request.CDB[6] = BMIC_CACHE_FLUSH;
Stephen M. Cameronbb158ea2011-10-26 16:21:17 -05005332 c->Request.CDB[7] = (size >> 8) & 0xFF;
5333 c->Request.CDB[8] = size & 0xFF;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005334 break;
5335 case TEST_UNIT_READY:
5336 c->Request.CDBLen = 6;
5337 c->Request.Type.Attribute = ATTR_SIMPLE;
5338 c->Request.Type.Direction = XFER_NONE;
5339 c->Request.Timeout = 0;
5340 break;
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06005341 case HPSA_GET_RAID_MAP:
5342 c->Request.CDBLen = 12;
5343 c->Request.Type.Attribute = ATTR_SIMPLE;
5344 c->Request.Type.Direction = XFER_READ;
5345 c->Request.Timeout = 0;
5346 c->Request.CDB[0] = HPSA_CISS_READ;
5347 c->Request.CDB[1] = cmd;
5348 c->Request.CDB[6] = (size >> 24) & 0xFF; /* MSB */
5349 c->Request.CDB[7] = (size >> 16) & 0xFF;
5350 c->Request.CDB[8] = (size >> 8) & 0xFF;
5351 c->Request.CDB[9] = size & 0xFF;
5352 break;
Stephen M. Cameron316b2212014-02-21 16:25:15 -06005353 case BMIC_SENSE_CONTROLLER_PARAMETERS:
5354 c->Request.CDBLen = 10;
5355 c->Request.Type.Attribute = ATTR_SIMPLE;
5356 c->Request.Type.Direction = XFER_READ;
5357 c->Request.Timeout = 0;
5358 c->Request.CDB[0] = BMIC_READ;
5359 c->Request.CDB[6] = BMIC_SENSE_CONTROLLER_PARAMETERS;
5360 c->Request.CDB[7] = (size >> 16) & 0xFF;
5361 c->Request.CDB[8] = (size >> 8) & 0xFF;
5362 break;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005363 default:
5364 dev_warn(&h->pdev->dev, "unknown command 0x%c\n", cmd);
5365 BUG();
Stephen M. Camerona2dac132013-02-20 11:24:41 -06005366 return -1;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005367 }
5368 } else if (cmd_type == TYPE_MSG) {
5369 switch (cmd) {
5370
5371 case HPSA_DEVICE_RESET_MSG:
5372 c->Request.CDBLen = 16;
5373 c->Request.Type.Type = 1; /* It is a MSG not a CMD */
5374 c->Request.Type.Attribute = ATTR_SIMPLE;
5375 c->Request.Type.Direction = XFER_NONE;
5376 c->Request.Timeout = 0; /* Don't time out */
Stephen M. Cameron64670ac2011-05-03 14:59:51 -05005377 memset(&c->Request.CDB[0], 0, sizeof(c->Request.CDB));
5378 c->Request.CDB[0] = cmd;
Stephen M. Cameron21e89af2012-07-26 11:34:10 -05005379 c->Request.CDB[1] = HPSA_RESET_TYPE_LUN;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005380 /* If bytes 4-7 are zero, it means reset the */
5381 /* LunID device */
5382 c->Request.CDB[4] = 0x00;
5383 c->Request.CDB[5] = 0x00;
5384 c->Request.CDB[6] = 0x00;
5385 c->Request.CDB[7] = 0x00;
Stephen M. Cameron75167d22012-05-01 11:42:51 -05005386 break;
5387 case HPSA_ABORT_MSG:
5388 a = buff; /* point to command to be aborted */
5389 dev_dbg(&h->pdev->dev, "Abort Tag:0x%08x:%08x using request Tag:0x%08x:%08x\n",
5390 a->Header.Tag.upper, a->Header.Tag.lower,
5391 c->Header.Tag.upper, c->Header.Tag.lower);
5392 c->Request.CDBLen = 16;
5393 c->Request.Type.Type = TYPE_MSG;
5394 c->Request.Type.Attribute = ATTR_SIMPLE;
5395 c->Request.Type.Direction = XFER_WRITE;
5396 c->Request.Timeout = 0; /* Don't time out */
5397 c->Request.CDB[0] = HPSA_TASK_MANAGEMENT;
5398 c->Request.CDB[1] = HPSA_TMF_ABORT_TASK;
5399 c->Request.CDB[2] = 0x00; /* reserved */
5400 c->Request.CDB[3] = 0x00; /* reserved */
5401 /* Tag to abort goes in CDB[4]-CDB[11] */
5402 c->Request.CDB[4] = a->Header.Tag.lower & 0xFF;
5403 c->Request.CDB[5] = (a->Header.Tag.lower >> 8) & 0xFF;
5404 c->Request.CDB[6] = (a->Header.Tag.lower >> 16) & 0xFF;
5405 c->Request.CDB[7] = (a->Header.Tag.lower >> 24) & 0xFF;
5406 c->Request.CDB[8] = a->Header.Tag.upper & 0xFF;
5407 c->Request.CDB[9] = (a->Header.Tag.upper >> 8) & 0xFF;
5408 c->Request.CDB[10] = (a->Header.Tag.upper >> 16) & 0xFF;
5409 c->Request.CDB[11] = (a->Header.Tag.upper >> 24) & 0xFF;
5410 c->Request.CDB[12] = 0x00; /* reserved */
5411 c->Request.CDB[13] = 0x00; /* reserved */
5412 c->Request.CDB[14] = 0x00; /* reserved */
5413 c->Request.CDB[15] = 0x00; /* reserved */
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005414 break;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005415 default:
5416 dev_warn(&h->pdev->dev, "unknown message type %d\n",
5417 cmd);
5418 BUG();
5419 }
5420 } else {
5421 dev_warn(&h->pdev->dev, "unknown command type %d\n", cmd_type);
5422 BUG();
5423 }
5424
5425 switch (c->Request.Type.Direction) {
5426 case XFER_READ:
5427 pci_dir = PCI_DMA_FROMDEVICE;
5428 break;
5429 case XFER_WRITE:
5430 pci_dir = PCI_DMA_TODEVICE;
5431 break;
5432 case XFER_NONE:
5433 pci_dir = PCI_DMA_NONE;
5434 break;
5435 default:
5436 pci_dir = PCI_DMA_BIDIRECTIONAL;
5437 }
Stephen M. Camerona2dac132013-02-20 11:24:41 -06005438 if (hpsa_map_one(h->pdev, c, buff, size, pci_dir))
5439 return -1;
5440 return 0;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005441}
5442
5443/*
5444 * Map (physical) PCI mem into (virtual) kernel space
5445 */
5446static void __iomem *remap_pci_mem(ulong base, ulong size)
5447{
5448 ulong page_base = ((ulong) base) & PAGE_MASK;
5449 ulong page_offs = ((ulong) base) - page_base;
Stephen M. Cameron088ba342012-07-26 11:34:23 -05005450 void __iomem *page_remapped = ioremap_nocache(page_base,
5451 page_offs + size);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005452
5453 return page_remapped ? (page_remapped + page_offs) : NULL;
5454}
5455
5456/* Takes cmds off the submission queue and sends them to the hardware,
5457 * then puts them on the queue of cmds waiting for completion.
Stephen M. Cameron0b570752014-05-29 10:53:28 -05005458 * Assumes h->lock is held
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005459 */
Stephen M. Cameron0b570752014-05-29 10:53:28 -05005460static void start_io(struct ctlr_info *h, unsigned long *flags)
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005461{
5462 struct CommandList *c;
5463
Stephen M. Cameron9e0fc7642011-02-15 15:32:48 -06005464 while (!list_empty(&h->reqQ)) {
5465 c = list_entry(h->reqQ.next, struct CommandList, list);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005466 /* can't do anything if fifo is full */
5467 if ((h->access.fifo_full(h))) {
Stephen M. Cameron396883e2013-09-23 13:34:17 -05005468 h->fifo_recently_full = 1;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005469 dev_warn(&h->pdev->dev, "fifo full\n");
5470 break;
5471 }
Stephen M. Cameron396883e2013-09-23 13:34:17 -05005472 h->fifo_recently_full = 0;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005473
5474 /* Get the first entry from the Request Q */
5475 removeQ(c);
5476 h->Qdepth--;
5477
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005478 /* Put job onto the completed Q */
5479 addQ(&h->cmpQ, c);
Matt Gatese16a33a2012-05-01 11:43:11 -05005480
5481 /* Must increment commands_outstanding before unlocking
5482 * and submitting to avoid race checking for fifo full
5483 * condition.
5484 */
5485 h->commands_outstanding++;
Matt Gatese16a33a2012-05-01 11:43:11 -05005486
5487 /* Tell the controller execute command */
Stephen M. Cameron0b570752014-05-29 10:53:28 -05005488 spin_unlock_irqrestore(&h->lock, *flags);
Matt Gatese16a33a2012-05-01 11:43:11 -05005489 h->access.submit_command(h, c);
Stephen M. Cameron0b570752014-05-29 10:53:28 -05005490 spin_lock_irqsave(&h->lock, *flags);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005491 }
Stephen M. Cameron0b570752014-05-29 10:53:28 -05005492}
5493
5494static void lock_and_start_io(struct ctlr_info *h)
5495{
5496 unsigned long flags;
5497
5498 spin_lock_irqsave(&h->lock, flags);
5499 start_io(h, &flags);
Matt Gatese16a33a2012-05-01 11:43:11 -05005500 spin_unlock_irqrestore(&h->lock, flags);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005501}
5502
Matt Gates254f7962012-05-01 11:43:06 -05005503static inline unsigned long get_next_completion(struct ctlr_info *h, u8 q)
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005504{
Matt Gates254f7962012-05-01 11:43:06 -05005505 return h->access.command_completed(h, q);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005506}
5507
Stephen M. Cameron900c5442010-02-04 08:42:35 -06005508static inline bool interrupt_pending(struct ctlr_info *h)
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005509{
5510 return h->access.intr_pending(h);
5511}
5512
5513static inline long interrupt_not_for_us(struct ctlr_info *h)
5514{
Stephen M. Cameron10f66012010-06-16 13:51:50 -05005515 return (h->access.intr_pending(h) == 0) ||
5516 (h->interrupts_enabled == 0);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005517}
5518
Stephen M. Cameron01a02ff2010-02-04 08:41:33 -06005519static inline int bad_tag(struct ctlr_info *h, u32 tag_index,
5520 u32 raw_tag)
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005521{
5522 if (unlikely(tag_index >= h->nr_cmds)) {
5523 dev_warn(&h->pdev->dev, "bad tag 0x%08x ignored.\n", raw_tag);
5524 return 1;
5525 }
5526 return 0;
5527}
5528
Stephen M. Cameron5a3d16f2012-05-01 11:42:46 -05005529static inline void finish_cmd(struct CommandList *c)
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005530{
Matt Gatese16a33a2012-05-01 11:43:11 -05005531 unsigned long flags;
Stephen M. Cameron396883e2013-09-23 13:34:17 -05005532 int io_may_be_stalled = 0;
5533 struct ctlr_info *h = c->h;
Matt Gatese16a33a2012-05-01 11:43:11 -05005534
Stephen M. Cameron396883e2013-09-23 13:34:17 -05005535 spin_lock_irqsave(&h->lock, flags);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005536 removeQ(c);
Stephen M. Cameron396883e2013-09-23 13:34:17 -05005537
5538 /*
5539 * Check for possibly stalled i/o.
5540 *
5541 * If a fifo_full condition is encountered, requests will back up
5542 * in h->reqQ. This queue is only emptied out by start_io which is
5543 * only called when a new i/o request comes in. If no i/o's are
5544 * forthcoming, the i/o's in h->reqQ can get stuck. So we call
5545 * start_io from here if we detect such a danger.
5546 *
5547 * Normally, we shouldn't hit this case, but pounding on the
5548 * CCISS_PASSTHRU ioctl can provoke it. Only call start_io if
5549 * commands_outstanding is low. We want to avoid calling
5550 * start_io from in here as much as possible, and esp. don't
5551 * want to get in a cycle where we call start_io every time
5552 * through here.
5553 */
5554 if (unlikely(h->fifo_recently_full) &&
5555 h->commands_outstanding < 5)
5556 io_may_be_stalled = 1;
5557
5558 spin_unlock_irqrestore(&h->lock, flags);
5559
Stephen M. Camerone85c5972012-05-01 11:43:42 -05005560 dial_up_lockup_detection_on_fw_flash_complete(c->h, c);
Scott Teelc3497752014-02-18 13:56:34 -06005561 if (likely(c->cmd_type == CMD_IOACCEL1 || c->cmd_type == CMD_SCSI
5562 || c->cmd_type == CMD_IOACCEL2))
Stephen M. Cameron1fb011f2011-05-03 14:59:00 -05005563 complete_scsi_command(c);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005564 else if (c->cmd_type == CMD_IOCTL_PEND)
5565 complete(c->waiting);
Stephen M. Cameron396883e2013-09-23 13:34:17 -05005566 if (unlikely(io_may_be_stalled))
Stephen M. Cameron0b570752014-05-29 10:53:28 -05005567 lock_and_start_io(h);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005568}
5569
Stephen M. Camerona104c992010-02-04 08:42:24 -06005570static inline u32 hpsa_tag_contains_index(u32 tag)
5571{
Stephen M. Camerona104c992010-02-04 08:42:24 -06005572 return tag & DIRECT_LOOKUP_BIT;
5573}
5574
5575static inline u32 hpsa_tag_to_index(u32 tag)
5576{
Stephen M. Camerona104c992010-02-04 08:42:24 -06005577 return tag >> DIRECT_LOOKUP_SHIFT;
5578}
5579
Stephen M. Camerona9a3a272011-02-15 15:32:53 -06005580
5581static inline u32 hpsa_tag_discard_error_bits(struct ctlr_info *h, u32 tag)
Stephen M. Camerona104c992010-02-04 08:42:24 -06005582{
Stephen M. Camerona9a3a272011-02-15 15:32:53 -06005583#define HPSA_PERF_ERROR_BITS ((1 << DIRECT_LOOKUP_SHIFT) - 1)
5584#define HPSA_SIMPLE_ERROR_BITS 0x03
Stephen M. Cameron960a30e2011-02-15 15:33:03 -06005585 if (unlikely(!(h->transMethod & CFGTBL_Trans_Performant)))
Stephen M. Camerona9a3a272011-02-15 15:32:53 -06005586 return tag & ~HPSA_SIMPLE_ERROR_BITS;
5587 return tag & ~HPSA_PERF_ERROR_BITS;
Stephen M. Camerona104c992010-02-04 08:42:24 -06005588}
5589
Don Brace303932f2010-02-04 08:42:40 -06005590/* process completion of an indexed ("direct lookup") command */
Stephen M. Cameron1d94f942012-05-01 11:43:01 -05005591static inline void process_indexed_cmd(struct ctlr_info *h,
Don Brace303932f2010-02-04 08:42:40 -06005592 u32 raw_tag)
5593{
5594 u32 tag_index;
5595 struct CommandList *c;
5596
5597 tag_index = hpsa_tag_to_index(raw_tag);
Stephen M. Cameron1d94f942012-05-01 11:43:01 -05005598 if (!bad_tag(h, tag_index, raw_tag)) {
5599 c = h->cmd_pool + tag_index;
5600 finish_cmd(c);
5601 }
Don Brace303932f2010-02-04 08:42:40 -06005602}
5603
5604/* process completion of a non-indexed command */
Stephen M. Cameron1d94f942012-05-01 11:43:01 -05005605static inline void process_nonindexed_cmd(struct ctlr_info *h,
Don Brace303932f2010-02-04 08:42:40 -06005606 u32 raw_tag)
5607{
5608 u32 tag;
5609 struct CommandList *c = NULL;
Matt Gatese16a33a2012-05-01 11:43:11 -05005610 unsigned long flags;
Don Brace303932f2010-02-04 08:42:40 -06005611
Stephen M. Camerona9a3a272011-02-15 15:32:53 -06005612 tag = hpsa_tag_discard_error_bits(h, raw_tag);
Matt Gatese16a33a2012-05-01 11:43:11 -05005613 spin_lock_irqsave(&h->lock, flags);
Stephen M. Cameron9e0fc7642011-02-15 15:32:48 -06005614 list_for_each_entry(c, &h->cmpQ, list) {
Don Brace303932f2010-02-04 08:42:40 -06005615 if ((c->busaddr & 0xFFFFFFE0) == (tag & 0xFFFFFFE0)) {
Matt Gatese16a33a2012-05-01 11:43:11 -05005616 spin_unlock_irqrestore(&h->lock, flags);
Stephen M. Cameron5a3d16f2012-05-01 11:42:46 -05005617 finish_cmd(c);
Stephen M. Cameron1d94f942012-05-01 11:43:01 -05005618 return;
Don Brace303932f2010-02-04 08:42:40 -06005619 }
5620 }
Matt Gatese16a33a2012-05-01 11:43:11 -05005621 spin_unlock_irqrestore(&h->lock, flags);
Don Brace303932f2010-02-04 08:42:40 -06005622 bad_tag(h, h->nr_cmds + 1, raw_tag);
Don Brace303932f2010-02-04 08:42:40 -06005623}
5624
Stephen M. Cameron64670ac2011-05-03 14:59:51 -05005625/* Some controllers, like p400, will give us one interrupt
5626 * after a soft reset, even if we turned interrupts off.
5627 * Only need to check for this in the hpsa_xxx_discard_completions
5628 * functions.
5629 */
5630static int ignore_bogus_interrupt(struct ctlr_info *h)
5631{
5632 if (likely(!reset_devices))
5633 return 0;
5634
5635 if (likely(h->interrupts_enabled))
5636 return 0;
5637
5638 dev_info(&h->pdev->dev, "Received interrupt while interrupts disabled "
5639 "(known firmware bug.) Ignoring.\n");
5640
5641 return 1;
5642}
5643
Matt Gates254f7962012-05-01 11:43:06 -05005644/*
5645 * Convert &h->q[x] (passed to interrupt handlers) back to h.
5646 * Relies on (h-q[x] == x) being true for x such that
5647 * 0 <= x < MAX_REPLY_QUEUES.
5648 */
5649static struct ctlr_info *queue_to_hba(u8 *queue)
Stephen M. Cameron64670ac2011-05-03 14:59:51 -05005650{
Matt Gates254f7962012-05-01 11:43:06 -05005651 return container_of((queue - *queue), struct ctlr_info, q[0]);
5652}
5653
5654static irqreturn_t hpsa_intx_discard_completions(int irq, void *queue)
5655{
5656 struct ctlr_info *h = queue_to_hba(queue);
5657 u8 q = *(u8 *) queue;
Stephen M. Cameron64670ac2011-05-03 14:59:51 -05005658 u32 raw_tag;
5659
5660 if (ignore_bogus_interrupt(h))
5661 return IRQ_NONE;
5662
5663 if (interrupt_not_for_us(h))
5664 return IRQ_NONE;
Stephen M. Camerona0c12412011-10-26 16:22:04 -05005665 h->last_intr_timestamp = get_jiffies_64();
Stephen M. Cameron64670ac2011-05-03 14:59:51 -05005666 while (interrupt_pending(h)) {
Matt Gates254f7962012-05-01 11:43:06 -05005667 raw_tag = get_next_completion(h, q);
Stephen M. Cameron64670ac2011-05-03 14:59:51 -05005668 while (raw_tag != FIFO_EMPTY)
Matt Gates254f7962012-05-01 11:43:06 -05005669 raw_tag = next_command(h, q);
Stephen M. Cameron64670ac2011-05-03 14:59:51 -05005670 }
Stephen M. Cameron64670ac2011-05-03 14:59:51 -05005671 return IRQ_HANDLED;
5672}
5673
Matt Gates254f7962012-05-01 11:43:06 -05005674static irqreturn_t hpsa_msix_discard_completions(int irq, void *queue)
Stephen M. Cameron64670ac2011-05-03 14:59:51 -05005675{
Matt Gates254f7962012-05-01 11:43:06 -05005676 struct ctlr_info *h = queue_to_hba(queue);
Stephen M. Cameron64670ac2011-05-03 14:59:51 -05005677 u32 raw_tag;
Matt Gates254f7962012-05-01 11:43:06 -05005678 u8 q = *(u8 *) queue;
Stephen M. Cameron64670ac2011-05-03 14:59:51 -05005679
5680 if (ignore_bogus_interrupt(h))
5681 return IRQ_NONE;
5682
Stephen M. Camerona0c12412011-10-26 16:22:04 -05005683 h->last_intr_timestamp = get_jiffies_64();
Matt Gates254f7962012-05-01 11:43:06 -05005684 raw_tag = get_next_completion(h, q);
Stephen M. Cameron64670ac2011-05-03 14:59:51 -05005685 while (raw_tag != FIFO_EMPTY)
Matt Gates254f7962012-05-01 11:43:06 -05005686 raw_tag = next_command(h, q);
Stephen M. Cameron64670ac2011-05-03 14:59:51 -05005687 return IRQ_HANDLED;
5688}
5689
Matt Gates254f7962012-05-01 11:43:06 -05005690static irqreturn_t do_hpsa_intr_intx(int irq, void *queue)
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005691{
Matt Gates254f7962012-05-01 11:43:06 -05005692 struct ctlr_info *h = queue_to_hba((u8 *) queue);
Don Brace303932f2010-02-04 08:42:40 -06005693 u32 raw_tag;
Matt Gates254f7962012-05-01 11:43:06 -05005694 u8 q = *(u8 *) queue;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005695
5696 if (interrupt_not_for_us(h))
5697 return IRQ_NONE;
Stephen M. Camerona0c12412011-10-26 16:22:04 -05005698 h->last_intr_timestamp = get_jiffies_64();
Stephen M. Cameron10f66012010-06-16 13:51:50 -05005699 while (interrupt_pending(h)) {
Matt Gates254f7962012-05-01 11:43:06 -05005700 raw_tag = get_next_completion(h, q);
Stephen M. Cameron10f66012010-06-16 13:51:50 -05005701 while (raw_tag != FIFO_EMPTY) {
Stephen M. Cameron1d94f942012-05-01 11:43:01 -05005702 if (likely(hpsa_tag_contains_index(raw_tag)))
5703 process_indexed_cmd(h, raw_tag);
Stephen M. Cameron10f66012010-06-16 13:51:50 -05005704 else
Stephen M. Cameron1d94f942012-05-01 11:43:01 -05005705 process_nonindexed_cmd(h, raw_tag);
Matt Gates254f7962012-05-01 11:43:06 -05005706 raw_tag = next_command(h, q);
Stephen M. Cameron10f66012010-06-16 13:51:50 -05005707 }
5708 }
Stephen M. Cameron10f66012010-06-16 13:51:50 -05005709 return IRQ_HANDLED;
5710}
5711
Matt Gates254f7962012-05-01 11:43:06 -05005712static irqreturn_t do_hpsa_intr_msi(int irq, void *queue)
Stephen M. Cameron10f66012010-06-16 13:51:50 -05005713{
Matt Gates254f7962012-05-01 11:43:06 -05005714 struct ctlr_info *h = queue_to_hba(queue);
Stephen M. Cameron10f66012010-06-16 13:51:50 -05005715 u32 raw_tag;
Matt Gates254f7962012-05-01 11:43:06 -05005716 u8 q = *(u8 *) queue;
Stephen M. Cameron10f66012010-06-16 13:51:50 -05005717
Stephen M. Camerona0c12412011-10-26 16:22:04 -05005718 h->last_intr_timestamp = get_jiffies_64();
Matt Gates254f7962012-05-01 11:43:06 -05005719 raw_tag = get_next_completion(h, q);
Don Brace303932f2010-02-04 08:42:40 -06005720 while (raw_tag != FIFO_EMPTY) {
Stephen M. Cameron1d94f942012-05-01 11:43:01 -05005721 if (likely(hpsa_tag_contains_index(raw_tag)))
5722 process_indexed_cmd(h, raw_tag);
Don Brace303932f2010-02-04 08:42:40 -06005723 else
Stephen M. Cameron1d94f942012-05-01 11:43:01 -05005724 process_nonindexed_cmd(h, raw_tag);
Matt Gates254f7962012-05-01 11:43:06 -05005725 raw_tag = next_command(h, q);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005726 }
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005727 return IRQ_HANDLED;
5728}
5729
Stephen M. Camerona9a3a272011-02-15 15:32:53 -06005730/* Send a message CDB to the firmware. Careful, this only works
5731 * in simple mode, not performant mode due to the tag lookup.
5732 * We only ever use this immediately after a controller reset.
5733 */
Greg Kroah-Hartman6f039792012-12-21 13:08:55 -08005734static int hpsa_message(struct pci_dev *pdev, unsigned char opcode,
5735 unsigned char type)
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005736{
5737 struct Command {
5738 struct CommandListHeader CommandHeader;
5739 struct RequestBlock Request;
5740 struct ErrDescriptor ErrorDescriptor;
5741 };
5742 struct Command *cmd;
5743 static const size_t cmd_sz = sizeof(*cmd) +
5744 sizeof(cmd->ErrorDescriptor);
5745 dma_addr_t paddr64;
5746 uint32_t paddr32, tag;
5747 void __iomem *vaddr;
5748 int i, err;
5749
5750 vaddr = pci_ioremap_bar(pdev, 0);
5751 if (vaddr == NULL)
5752 return -ENOMEM;
5753
5754 /* The Inbound Post Queue only accepts 32-bit physical addresses for the
5755 * CCISS commands, so they must be allocated from the lower 4GiB of
5756 * memory.
5757 */
5758 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
5759 if (err) {
5760 iounmap(vaddr);
5761 return -ENOMEM;
5762 }
5763
5764 cmd = pci_alloc_consistent(pdev, cmd_sz, &paddr64);
5765 if (cmd == NULL) {
5766 iounmap(vaddr);
5767 return -ENOMEM;
5768 }
5769
5770 /* This must fit, because of the 32-bit consistent DMA mask. Also,
5771 * although there's no guarantee, we assume that the address is at
5772 * least 4-byte aligned (most likely, it's page-aligned).
5773 */
5774 paddr32 = paddr64;
5775
5776 cmd->CommandHeader.ReplyQueue = 0;
5777 cmd->CommandHeader.SGList = 0;
5778 cmd->CommandHeader.SGTotal = 0;
5779 cmd->CommandHeader.Tag.lower = paddr32;
5780 cmd->CommandHeader.Tag.upper = 0;
5781 memset(&cmd->CommandHeader.LUN.LunAddrBytes, 0, 8);
5782
5783 cmd->Request.CDBLen = 16;
5784 cmd->Request.Type.Type = TYPE_MSG;
5785 cmd->Request.Type.Attribute = ATTR_HEADOFQUEUE;
5786 cmd->Request.Type.Direction = XFER_NONE;
5787 cmd->Request.Timeout = 0; /* Don't time out */
5788 cmd->Request.CDB[0] = opcode;
5789 cmd->Request.CDB[1] = type;
5790 memset(&cmd->Request.CDB[2], 0, 14); /* rest of the CDB is reserved */
5791 cmd->ErrorDescriptor.Addr.lower = paddr32 + sizeof(*cmd);
5792 cmd->ErrorDescriptor.Addr.upper = 0;
5793 cmd->ErrorDescriptor.Len = sizeof(struct ErrorInfo);
5794
5795 writel(paddr32, vaddr + SA5_REQUEST_PORT_OFFSET);
5796
5797 for (i = 0; i < HPSA_MSG_SEND_RETRY_LIMIT; i++) {
5798 tag = readl(vaddr + SA5_REPLY_PORT_OFFSET);
Stephen M. Camerona9a3a272011-02-15 15:32:53 -06005799 if ((tag & ~HPSA_SIMPLE_ERROR_BITS) == paddr32)
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005800 break;
5801 msleep(HPSA_MSG_SEND_RETRY_INTERVAL_MSECS);
5802 }
5803
5804 iounmap(vaddr);
5805
5806 /* we leak the DMA buffer here ... no choice since the controller could
5807 * still complete the command.
5808 */
5809 if (i == HPSA_MSG_SEND_RETRY_LIMIT) {
5810 dev_err(&pdev->dev, "controller message %02x:%02x timed out\n",
5811 opcode, type);
5812 return -ETIMEDOUT;
5813 }
5814
5815 pci_free_consistent(pdev, cmd_sz, cmd, paddr64);
5816
5817 if (tag & HPSA_ERROR_BIT) {
5818 dev_err(&pdev->dev, "controller message %02x:%02x failed\n",
5819 opcode, type);
5820 return -EIO;
5821 }
5822
5823 dev_info(&pdev->dev, "controller message %02x:%02x succeeded\n",
5824 opcode, type);
5825 return 0;
5826}
5827
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005828#define hpsa_noop(p) hpsa_message(p, 3, 0)
5829
Stephen M. Cameron1df85522010-06-16 13:51:40 -05005830static int hpsa_controller_hard_reset(struct pci_dev *pdev,
Stephen M. Cameroncf0b08d2011-05-03 14:59:46 -05005831 void * __iomem vaddr, u32 use_doorbell)
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005832{
Stephen M. Cameron1df85522010-06-16 13:51:40 -05005833 u16 pmcsr;
5834 int pos;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005835
Stephen M. Cameron1df85522010-06-16 13:51:40 -05005836 if (use_doorbell) {
5837 /* For everything after the P600, the PCI power state method
5838 * of resetting the controller doesn't work, so we have this
5839 * other way using the doorbell register.
5840 */
5841 dev_info(&pdev->dev, "using doorbell to reset controller\n");
Stephen M. Cameroncf0b08d2011-05-03 14:59:46 -05005842 writel(use_doorbell, vaddr + SA5_DOORBELL);
Stephen M. Cameron85009232013-09-23 13:33:36 -05005843
Justin Lindley00701a92014-05-29 10:52:47 -05005844 /* PMC hardware guys tell us we need a 10 second delay after
Stephen M. Cameron85009232013-09-23 13:33:36 -05005845 * doorbell reset and before any attempt to talk to the board
5846 * at all to ensure that this actually works and doesn't fall
5847 * over in some weird corner cases.
5848 */
Justin Lindley00701a92014-05-29 10:52:47 -05005849 msleep(10000);
Stephen M. Cameron1df85522010-06-16 13:51:40 -05005850 } else { /* Try to do it the PCI power state way */
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005851
Stephen M. Cameron1df85522010-06-16 13:51:40 -05005852 /* Quoting from the Open CISS Specification: "The Power
5853 * Management Control/Status Register (CSR) controls the power
5854 * state of the device. The normal operating state is D0,
5855 * CSR=00h. The software off state is D3, CSR=03h. To reset
5856 * the controller, place the interface device in D3 then to D0,
5857 * this causes a secondary PCI reset which will reset the
5858 * controller." */
5859
5860 pos = pci_find_capability(pdev, PCI_CAP_ID_PM);
5861 if (pos == 0) {
5862 dev_err(&pdev->dev,
5863 "hpsa_reset_controller: "
5864 "PCI PM not supported\n");
5865 return -ENODEV;
5866 }
5867 dev_info(&pdev->dev, "using PCI PM to reset controller\n");
5868 /* enter the D3hot power management state */
5869 pci_read_config_word(pdev, pos + PCI_PM_CTRL, &pmcsr);
5870 pmcsr &= ~PCI_PM_CTRL_STATE_MASK;
5871 pmcsr |= PCI_D3hot;
5872 pci_write_config_word(pdev, pos + PCI_PM_CTRL, pmcsr);
5873
5874 msleep(500);
5875
5876 /* enter the D0 power management state */
5877 pmcsr &= ~PCI_PM_CTRL_STATE_MASK;
5878 pmcsr |= PCI_D0;
5879 pci_write_config_word(pdev, pos + PCI_PM_CTRL, pmcsr);
Mike Millerc4853ef2011-10-21 08:19:43 +02005880
5881 /*
5882 * The P600 requires a small delay when changing states.
5883 * Otherwise we may think the board did not reset and we bail.
5884 * This for kdump only and is particular to the P600.
5885 */
5886 msleep(500);
Stephen M. Cameron1df85522010-06-16 13:51:40 -05005887 }
5888 return 0;
5889}
5890
Greg Kroah-Hartman6f039792012-12-21 13:08:55 -08005891static void init_driver_version(char *driver_version, int len)
Stephen M. Cameron580ada32011-05-03 14:59:10 -05005892{
5893 memset(driver_version, 0, len);
Stephen M. Cameronf79cfec2012-01-19 14:00:59 -06005894 strncpy(driver_version, HPSA " " HPSA_DRIVER_VERSION, len - 1);
Stephen M. Cameron580ada32011-05-03 14:59:10 -05005895}
5896
Greg Kroah-Hartman6f039792012-12-21 13:08:55 -08005897static int write_driver_ver_to_cfgtable(struct CfgTable __iomem *cfgtable)
Stephen M. Cameron580ada32011-05-03 14:59:10 -05005898{
5899 char *driver_version;
5900 int i, size = sizeof(cfgtable->driver_version);
5901
5902 driver_version = kmalloc(size, GFP_KERNEL);
5903 if (!driver_version)
5904 return -ENOMEM;
5905
5906 init_driver_version(driver_version, size);
5907 for (i = 0; i < size; i++)
5908 writeb(driver_version[i], &cfgtable->driver_version[i]);
5909 kfree(driver_version);
5910 return 0;
5911}
5912
Greg Kroah-Hartman6f039792012-12-21 13:08:55 -08005913static void read_driver_ver_from_cfgtable(struct CfgTable __iomem *cfgtable,
5914 unsigned char *driver_ver)
Stephen M. Cameron580ada32011-05-03 14:59:10 -05005915{
5916 int i;
5917
5918 for (i = 0; i < sizeof(cfgtable->driver_version); i++)
5919 driver_ver[i] = readb(&cfgtable->driver_version[i]);
5920}
5921
Greg Kroah-Hartman6f039792012-12-21 13:08:55 -08005922static int controller_reset_failed(struct CfgTable __iomem *cfgtable)
Stephen M. Cameron580ada32011-05-03 14:59:10 -05005923{
5924
5925 char *driver_ver, *old_driver_ver;
5926 int rc, size = sizeof(cfgtable->driver_version);
5927
5928 old_driver_ver = kmalloc(2 * size, GFP_KERNEL);
5929 if (!old_driver_ver)
5930 return -ENOMEM;
5931 driver_ver = old_driver_ver + size;
5932
5933 /* After a reset, the 32 bytes of "driver version" in the cfgtable
5934 * should have been changed, otherwise we know the reset failed.
5935 */
5936 init_driver_version(old_driver_ver, size);
5937 read_driver_ver_from_cfgtable(cfgtable, driver_ver);
5938 rc = !memcmp(driver_ver, old_driver_ver, size);
5939 kfree(old_driver_ver);
5940 return rc;
5941}
Stephen M. Cameron1df85522010-06-16 13:51:40 -05005942/* This does a hard reset of the controller using PCI power management
5943 * states or the using the doorbell register.
5944 */
Greg Kroah-Hartman6f039792012-12-21 13:08:55 -08005945static int hpsa_kdump_hard_reset_controller(struct pci_dev *pdev)
Stephen M. Cameron1df85522010-06-16 13:51:40 -05005946{
Stephen M. Cameron1df85522010-06-16 13:51:40 -05005947 u64 cfg_offset;
5948 u32 cfg_base_addr;
5949 u64 cfg_base_addr_index;
5950 void __iomem *vaddr;
5951 unsigned long paddr;
Stephen M. Cameron580ada32011-05-03 14:59:10 -05005952 u32 misc_fw_support;
Stephen M. Cameron270d05d2011-01-06 14:48:08 -06005953 int rc;
Stephen M. Cameron1df85522010-06-16 13:51:40 -05005954 struct CfgTable __iomem *cfgtable;
Stephen M. Cameroncf0b08d2011-05-03 14:59:46 -05005955 u32 use_doorbell;
Stephen M. Cameron18867652010-06-16 13:51:45 -05005956 u32 board_id;
Stephen M. Cameron270d05d2011-01-06 14:48:08 -06005957 u16 command_register;
Stephen M. Cameron1df85522010-06-16 13:51:40 -05005958
5959 /* For controllers as old as the P600, this is very nearly
5960 * the same thing as
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005961 *
5962 * pci_save_state(pci_dev);
5963 * pci_set_power_state(pci_dev, PCI_D3hot);
5964 * pci_set_power_state(pci_dev, PCI_D0);
5965 * pci_restore_state(pci_dev);
5966 *
Stephen M. Cameron1df85522010-06-16 13:51:40 -05005967 * For controllers newer than the P600, the pci power state
5968 * method of resetting doesn't work so we have another way
5969 * using the doorbell register.
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005970 */
Stephen M. Cameron18867652010-06-16 13:51:45 -05005971
Stephen M. Cameron25c1e56a2011-01-06 14:48:18 -06005972 rc = hpsa_lookup_board_id(pdev, &board_id);
Stephen M. Cameron46380782011-05-03 15:00:01 -05005973 if (rc < 0 || !ctlr_is_resettable(board_id)) {
Stephen M. Cameron25c1e56a2011-01-06 14:48:18 -06005974 dev_warn(&pdev->dev, "Not resetting device.\n");
5975 return -ENODEV;
5976 }
Stephen M. Cameron46380782011-05-03 15:00:01 -05005977
5978 /* if controller is soft- but not hard resettable... */
5979 if (!ctlr_is_hard_resettable(board_id))
5980 return -ENOTSUPP; /* try soft reset later. */
Stephen M. Cameron18867652010-06-16 13:51:45 -05005981
Stephen M. Cameron270d05d2011-01-06 14:48:08 -06005982 /* Save the PCI command register */
5983 pci_read_config_word(pdev, 4, &command_register);
5984 /* Turn the board off. This is so that later pci_restore_state()
5985 * won't turn the board on before the rest of config space is ready.
5986 */
5987 pci_disable_device(pdev);
5988 pci_save_state(pdev);
Stephen M. Cameron1df85522010-06-16 13:51:40 -05005989
5990 /* find the first memory BAR, so we can find the cfg table */
5991 rc = hpsa_pci_find_memory_BAR(pdev, &paddr);
5992 if (rc)
5993 return rc;
5994 vaddr = remap_pci_mem(paddr, 0x250);
5995 if (!vaddr)
5996 return -ENOMEM;
5997
5998 /* find cfgtable in order to check if reset via doorbell is supported */
5999 rc = hpsa_find_cfg_addrs(pdev, vaddr, &cfg_base_addr,
6000 &cfg_base_addr_index, &cfg_offset);
6001 if (rc)
6002 goto unmap_vaddr;
6003 cfgtable = remap_pci_mem(pci_resource_start(pdev,
6004 cfg_base_addr_index) + cfg_offset, sizeof(*cfgtable));
6005 if (!cfgtable) {
6006 rc = -ENOMEM;
6007 goto unmap_vaddr;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006008 }
Stephen M. Cameron580ada32011-05-03 14:59:10 -05006009 rc = write_driver_ver_to_cfgtable(cfgtable);
6010 if (rc)
6011 goto unmap_vaddr;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006012
Stephen M. Cameroncf0b08d2011-05-03 14:59:46 -05006013 /* If reset via doorbell register is supported, use that.
6014 * There are two such methods. Favor the newest method.
6015 */
Stephen M. Cameron1df85522010-06-16 13:51:40 -05006016 misc_fw_support = readl(&cfgtable->misc_fw_support);
Stephen M. Cameroncf0b08d2011-05-03 14:59:46 -05006017 use_doorbell = misc_fw_support & MISC_FW_DOORBELL_RESET2;
6018 if (use_doorbell) {
6019 use_doorbell = DOORBELL_CTLR_RESET2;
6020 } else {
6021 use_doorbell = misc_fw_support & MISC_FW_DOORBELL_RESET;
6022 if (use_doorbell) {
Mike Millerfba63092011-10-13 11:44:06 -05006023 dev_warn(&pdev->dev, "Soft reset not supported. "
6024 "Firmware update is required.\n");
Stephen M. Cameron64670ac2011-05-03 14:59:51 -05006025 rc = -ENOTSUPP; /* try soft reset */
Stephen M. Cameroncf0b08d2011-05-03 14:59:46 -05006026 goto unmap_cfgtable;
6027 }
6028 }
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006029
Stephen M. Cameron1df85522010-06-16 13:51:40 -05006030 rc = hpsa_controller_hard_reset(pdev, vaddr, use_doorbell);
6031 if (rc)
6032 goto unmap_cfgtable;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006033
Stephen M. Cameron270d05d2011-01-06 14:48:08 -06006034 pci_restore_state(pdev);
6035 rc = pci_enable_device(pdev);
6036 if (rc) {
6037 dev_warn(&pdev->dev, "failed to enable device.\n");
6038 goto unmap_cfgtable;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006039 }
Stephen M. Cameron270d05d2011-01-06 14:48:08 -06006040 pci_write_config_word(pdev, 4, command_register);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006041
Stephen M. Cameron1df85522010-06-16 13:51:40 -05006042 /* Some devices (notably the HP Smart Array 5i Controller)
6043 need a little pause here */
6044 msleep(HPSA_POST_RESET_PAUSE_MSECS);
6045
Stephen M. Cameronfe5389c2011-01-06 14:48:03 -06006046 rc = hpsa_wait_for_board_state(pdev, vaddr, BOARD_READY);
6047 if (rc) {
6048 dev_warn(&pdev->dev,
Stephen M. Cameron64670ac2011-05-03 14:59:51 -05006049 "failed waiting for board to become ready "
6050 "after hard reset\n");
Stephen M. Cameronfe5389c2011-01-06 14:48:03 -06006051 goto unmap_cfgtable;
6052 }
Stephen M. Cameronfe5389c2011-01-06 14:48:03 -06006053
Stephen M. Cameron580ada32011-05-03 14:59:10 -05006054 rc = controller_reset_failed(vaddr);
6055 if (rc < 0)
6056 goto unmap_cfgtable;
6057 if (rc) {
Stephen M. Cameron64670ac2011-05-03 14:59:51 -05006058 dev_warn(&pdev->dev, "Unable to successfully reset "
6059 "controller. Will try soft reset.\n");
6060 rc = -ENOTSUPP;
Stephen M. Cameron580ada32011-05-03 14:59:10 -05006061 } else {
Stephen M. Cameron64670ac2011-05-03 14:59:51 -05006062 dev_info(&pdev->dev, "board ready after hard reset.\n");
Stephen M. Cameron1df85522010-06-16 13:51:40 -05006063 }
6064
6065unmap_cfgtable:
6066 iounmap(cfgtable);
6067
6068unmap_vaddr:
6069 iounmap(vaddr);
6070 return rc;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006071}
6072
6073/*
6074 * We cannot read the structure directly, for portability we must use
6075 * the io functions.
6076 * This is for debug only.
6077 */
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006078static void print_cfg_table(struct device *dev, struct CfgTable *tb)
6079{
Stephen M. Cameron58f86652010-05-27 15:13:58 -05006080#ifdef HPSA_DEBUG
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006081 int i;
6082 char temp_name[17];
6083
6084 dev_info(dev, "Controller Configuration information\n");
6085 dev_info(dev, "------------------------------------\n");
6086 for (i = 0; i < 4; i++)
6087 temp_name[i] = readb(&(tb->Signature[i]));
6088 temp_name[4] = '\0';
6089 dev_info(dev, " Signature = %s\n", temp_name);
6090 dev_info(dev, " Spec Number = %d\n", readl(&(tb->SpecValence)));
6091 dev_info(dev, " Transport methods supported = 0x%x\n",
6092 readl(&(tb->TransportSupport)));
6093 dev_info(dev, " Transport methods active = 0x%x\n",
6094 readl(&(tb->TransportActive)));
6095 dev_info(dev, " Requested transport Method = 0x%x\n",
6096 readl(&(tb->HostWrite.TransportRequest)));
6097 dev_info(dev, " Coalesce Interrupt Delay = 0x%x\n",
6098 readl(&(tb->HostWrite.CoalIntDelay)));
6099 dev_info(dev, " Coalesce Interrupt Count = 0x%x\n",
6100 readl(&(tb->HostWrite.CoalIntCount)));
6101 dev_info(dev, " Max outstanding commands = 0x%d\n",
6102 readl(&(tb->CmdsOutMax)));
6103 dev_info(dev, " Bus Types = 0x%x\n", readl(&(tb->BusTypes)));
6104 for (i = 0; i < 16; i++)
6105 temp_name[i] = readb(&(tb->ServerName[i]));
6106 temp_name[16] = '\0';
6107 dev_info(dev, " Server Name = %s\n", temp_name);
6108 dev_info(dev, " Heartbeat Counter = 0x%x\n\n\n",
6109 readl(&(tb->HeartBeat)));
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006110#endif /* HPSA_DEBUG */
Stephen M. Cameron58f86652010-05-27 15:13:58 -05006111}
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006112
6113static int find_PCI_BAR_index(struct pci_dev *pdev, unsigned long pci_bar_addr)
6114{
6115 int i, offset, mem_type, bar_type;
6116
6117 if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */
6118 return 0;
6119 offset = 0;
6120 for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
6121 bar_type = pci_resource_flags(pdev, i) & PCI_BASE_ADDRESS_SPACE;
6122 if (bar_type == PCI_BASE_ADDRESS_SPACE_IO)
6123 offset += 4;
6124 else {
6125 mem_type = pci_resource_flags(pdev, i) &
6126 PCI_BASE_ADDRESS_MEM_TYPE_MASK;
6127 switch (mem_type) {
6128 case PCI_BASE_ADDRESS_MEM_TYPE_32:
6129 case PCI_BASE_ADDRESS_MEM_TYPE_1M:
6130 offset += 4; /* 32 bit */
6131 break;
6132 case PCI_BASE_ADDRESS_MEM_TYPE_64:
6133 offset += 8;
6134 break;
6135 default: /* reserved in PCI 2.2 */
6136 dev_warn(&pdev->dev,
6137 "base address is invalid\n");
6138 return -1;
6139 break;
6140 }
6141 }
6142 if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0)
6143 return i + 1;
6144 }
6145 return -1;
6146}
6147
6148/* If MSI/MSI-X is supported by the kernel we will try to enable it on
6149 * controllers that are capable. If not, we use IO-APIC mode.
6150 */
6151
Greg Kroah-Hartman6f039792012-12-21 13:08:55 -08006152static void hpsa_interrupt_mode(struct ctlr_info *h)
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006153{
6154#ifdef CONFIG_PCI_MSI
Matt Gates254f7962012-05-01 11:43:06 -05006155 int err, i;
6156 struct msix_entry hpsa_msix_entries[MAX_REPLY_QUEUES];
6157
6158 for (i = 0; i < MAX_REPLY_QUEUES; i++) {
6159 hpsa_msix_entries[i].vector = 0;
6160 hpsa_msix_entries[i].entry = i;
6161 }
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006162
6163 /* Some boards advertise MSI but don't really support it */
Stephen M. Cameron6b3f4c52010-05-27 15:13:02 -05006164 if ((h->board_id == 0x40700E11) || (h->board_id == 0x40800E11) ||
6165 (h->board_id == 0x40820E11) || (h->board_id == 0x40830E11))
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006166 goto default_int_mode;
Stephen M. Cameron55c06c72010-05-27 15:12:46 -05006167 if (pci_find_capability(h->pdev, PCI_CAP_ID_MSIX)) {
6168 dev_info(&h->pdev->dev, "MSIX\n");
Hannes Reineckeeee0f032014-01-15 13:30:53 +01006169 h->msix_vector = MAX_REPLY_QUEUES;
Stephen M. Cameronf89439b2014-05-29 10:53:02 -05006170 if (h->msix_vector > num_online_cpus())
6171 h->msix_vector = num_online_cpus();
Matt Gates254f7962012-05-01 11:43:06 -05006172 err = pci_enable_msix(h->pdev, hpsa_msix_entries,
Hannes Reineckeeee0f032014-01-15 13:30:53 +01006173 h->msix_vector);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006174 if (err > 0) {
Stephen M. Cameron55c06c72010-05-27 15:12:46 -05006175 dev_warn(&h->pdev->dev, "only %d MSI-X vectors "
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006176 "available\n", err);
Hannes Reineckeeee0f032014-01-15 13:30:53 +01006177 h->msix_vector = err;
6178 err = pci_enable_msix(h->pdev, hpsa_msix_entries,
6179 h->msix_vector);
6180 }
6181 if (!err) {
6182 for (i = 0; i < h->msix_vector; i++)
6183 h->intr[i] = hpsa_msix_entries[i].vector;
6184 return;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006185 } else {
Stephen M. Cameron55c06c72010-05-27 15:12:46 -05006186 dev_warn(&h->pdev->dev, "MSI-X init failed %d\n",
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006187 err);
Hannes Reineckeeee0f032014-01-15 13:30:53 +01006188 h->msix_vector = 0;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006189 goto default_int_mode;
6190 }
6191 }
Stephen M. Cameron55c06c72010-05-27 15:12:46 -05006192 if (pci_find_capability(h->pdev, PCI_CAP_ID_MSI)) {
6193 dev_info(&h->pdev->dev, "MSI\n");
6194 if (!pci_enable_msi(h->pdev))
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006195 h->msi_vector = 1;
6196 else
Stephen M. Cameron55c06c72010-05-27 15:12:46 -05006197 dev_warn(&h->pdev->dev, "MSI init failed\n");
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006198 }
6199default_int_mode:
6200#endif /* CONFIG_PCI_MSI */
6201 /* if we get here we're going to use the default interrupt mode */
Stephen M. Camerona9a3a272011-02-15 15:32:53 -06006202 h->intr[h->intr_mode] = h->pdev->irq;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006203}
6204
Greg Kroah-Hartman6f039792012-12-21 13:08:55 -08006205static int hpsa_lookup_board_id(struct pci_dev *pdev, u32 *board_id)
Stephen M. Camerone5c880d2010-05-27 15:12:52 -05006206{
6207 int i;
6208 u32 subsystem_vendor_id, subsystem_device_id;
6209
6210 subsystem_vendor_id = pdev->subsystem_vendor;
6211 subsystem_device_id = pdev->subsystem_device;
6212 *board_id = ((subsystem_device_id << 16) & 0xffff0000) |
6213 subsystem_vendor_id;
6214
6215 for (i = 0; i < ARRAY_SIZE(products); i++)
6216 if (*board_id == products[i].board_id)
6217 return i;
6218
Stephen M. Cameron6798cc02010-06-16 13:51:20 -05006219 if ((subsystem_vendor_id != PCI_VENDOR_ID_HP &&
6220 subsystem_vendor_id != PCI_VENDOR_ID_COMPAQ) ||
6221 !hpsa_allow_any) {
Stephen M. Camerone5c880d2010-05-27 15:12:52 -05006222 dev_warn(&pdev->dev, "unrecognized board ID: "
6223 "0x%08x, ignoring.\n", *board_id);
6224 return -ENODEV;
6225 }
6226 return ARRAY_SIZE(products) - 1; /* generic unknown smart array */
6227}
6228
Greg Kroah-Hartman6f039792012-12-21 13:08:55 -08006229static int hpsa_pci_find_memory_BAR(struct pci_dev *pdev,
6230 unsigned long *memory_bar)
Stephen M. Cameron3a7774c2010-05-27 15:13:07 -05006231{
6232 int i;
6233
6234 for (i = 0; i < DEVICE_COUNT_RESOURCE; i++)
Stephen M. Cameron12d2cd42010-06-16 13:51:25 -05006235 if (pci_resource_flags(pdev, i) & IORESOURCE_MEM) {
Stephen M. Cameron3a7774c2010-05-27 15:13:07 -05006236 /* addressing mode bits already removed */
Stephen M. Cameron12d2cd42010-06-16 13:51:25 -05006237 *memory_bar = pci_resource_start(pdev, i);
6238 dev_dbg(&pdev->dev, "memory BAR = %lx\n",
Stephen M. Cameron3a7774c2010-05-27 15:13:07 -05006239 *memory_bar);
6240 return 0;
6241 }
Stephen M. Cameron12d2cd42010-06-16 13:51:25 -05006242 dev_warn(&pdev->dev, "no memory BAR found\n");
Stephen M. Cameron3a7774c2010-05-27 15:13:07 -05006243 return -ENODEV;
6244}
6245
Greg Kroah-Hartman6f039792012-12-21 13:08:55 -08006246static int hpsa_wait_for_board_state(struct pci_dev *pdev, void __iomem *vaddr,
6247 int wait_for_ready)
Stephen M. Cameron2c4c8c82010-05-27 15:13:12 -05006248{
Stephen M. Cameronfe5389c2011-01-06 14:48:03 -06006249 int i, iterations;
Stephen M. Cameron2c4c8c82010-05-27 15:13:12 -05006250 u32 scratchpad;
Stephen M. Cameronfe5389c2011-01-06 14:48:03 -06006251 if (wait_for_ready)
6252 iterations = HPSA_BOARD_READY_ITERATIONS;
6253 else
6254 iterations = HPSA_BOARD_NOT_READY_ITERATIONS;
Stephen M. Cameron2c4c8c82010-05-27 15:13:12 -05006255
Stephen M. Cameronfe5389c2011-01-06 14:48:03 -06006256 for (i = 0; i < iterations; i++) {
6257 scratchpad = readl(vaddr + SA5_SCRATCHPAD_OFFSET);
6258 if (wait_for_ready) {
6259 if (scratchpad == HPSA_FIRMWARE_READY)
6260 return 0;
6261 } else {
6262 if (scratchpad != HPSA_FIRMWARE_READY)
6263 return 0;
6264 }
Stephen M. Cameron2c4c8c82010-05-27 15:13:12 -05006265 msleep(HPSA_BOARD_READY_POLL_INTERVAL_MSECS);
6266 }
Stephen M. Cameronfe5389c2011-01-06 14:48:03 -06006267 dev_warn(&pdev->dev, "board not ready, timed out.\n");
Stephen M. Cameron2c4c8c82010-05-27 15:13:12 -05006268 return -ENODEV;
6269}
6270
Greg Kroah-Hartman6f039792012-12-21 13:08:55 -08006271static int hpsa_find_cfg_addrs(struct pci_dev *pdev, void __iomem *vaddr,
6272 u32 *cfg_base_addr, u64 *cfg_base_addr_index,
6273 u64 *cfg_offset)
Stephen M. Camerona51fd472010-06-16 13:51:30 -05006274{
6275 *cfg_base_addr = readl(vaddr + SA5_CTCFG_OFFSET);
6276 *cfg_offset = readl(vaddr + SA5_CTMEM_OFFSET);
6277 *cfg_base_addr &= (u32) 0x0000ffff;
6278 *cfg_base_addr_index = find_PCI_BAR_index(pdev, *cfg_base_addr);
6279 if (*cfg_base_addr_index == -1) {
6280 dev_warn(&pdev->dev, "cannot find cfg_base_addr_index\n");
6281 return -ENODEV;
6282 }
6283 return 0;
6284}
6285
Greg Kroah-Hartman6f039792012-12-21 13:08:55 -08006286static int hpsa_find_cfgtables(struct ctlr_info *h)
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006287{
Stephen M. Cameron01a02ff2010-02-04 08:41:33 -06006288 u64 cfg_offset;
6289 u32 cfg_base_addr;
6290 u64 cfg_base_addr_index;
Don Brace303932f2010-02-04 08:42:40 -06006291 u32 trans_offset;
Stephen M. Camerona51fd472010-06-16 13:51:30 -05006292 int rc;
Stephen M. Cameron77c44952010-05-27 15:13:17 -05006293
Stephen M. Camerona51fd472010-06-16 13:51:30 -05006294 rc = hpsa_find_cfg_addrs(h->pdev, h->vaddr, &cfg_base_addr,
6295 &cfg_base_addr_index, &cfg_offset);
6296 if (rc)
6297 return rc;
Stephen M. Cameron77c44952010-05-27 15:13:17 -05006298 h->cfgtable = remap_pci_mem(pci_resource_start(h->pdev,
Stephen M. Camerona51fd472010-06-16 13:51:30 -05006299 cfg_base_addr_index) + cfg_offset, sizeof(*h->cfgtable));
Stephen M. Cameron77c44952010-05-27 15:13:17 -05006300 if (!h->cfgtable)
6301 return -ENOMEM;
Stephen M. Cameron580ada32011-05-03 14:59:10 -05006302 rc = write_driver_ver_to_cfgtable(h->cfgtable);
6303 if (rc)
6304 return rc;
Stephen M. Cameron77c44952010-05-27 15:13:17 -05006305 /* Find performant mode table. */
Stephen M. Camerona51fd472010-06-16 13:51:30 -05006306 trans_offset = readl(&h->cfgtable->TransMethodOffset);
Stephen M. Cameron77c44952010-05-27 15:13:17 -05006307 h->transtable = remap_pci_mem(pci_resource_start(h->pdev,
6308 cfg_base_addr_index)+cfg_offset+trans_offset,
6309 sizeof(*h->transtable));
6310 if (!h->transtable)
6311 return -ENOMEM;
6312 return 0;
6313}
6314
Greg Kroah-Hartman6f039792012-12-21 13:08:55 -08006315static void hpsa_get_max_perf_mode_cmds(struct ctlr_info *h)
Stephen M. Cameroncba3d382010-06-16 13:51:56 -05006316{
6317 h->max_commands = readl(&(h->cfgtable->MaxPerformantModeCommands));
Stephen M. Cameron72ceeae2011-01-06 14:48:13 -06006318
6319 /* Limit commands in memory limited kdump scenario. */
6320 if (reset_devices && h->max_commands > 32)
6321 h->max_commands = 32;
6322
Stephen M. Cameroncba3d382010-06-16 13:51:56 -05006323 if (h->max_commands < 16) {
6324 dev_warn(&h->pdev->dev, "Controller reports "
6325 "max supported commands of %d, an obvious lie. "
6326 "Using 16. Ensure that firmware is up to date.\n",
6327 h->max_commands);
6328 h->max_commands = 16;
6329 }
6330}
6331
Stephen M. Cameronb93d7532010-05-27 15:13:27 -05006332/* Interrogate the hardware for some limits:
6333 * max commands, max SG elements without chaining, and with chaining,
6334 * SG chain block size, etc.
6335 */
Greg Kroah-Hartman6f039792012-12-21 13:08:55 -08006336static void hpsa_find_board_params(struct ctlr_info *h)
Stephen M. Cameronb93d7532010-05-27 15:13:27 -05006337{
Stephen M. Cameroncba3d382010-06-16 13:51:56 -05006338 hpsa_get_max_perf_mode_cmds(h);
Stephen M. Cameronb93d7532010-05-27 15:13:27 -05006339 h->nr_cmds = h->max_commands - 4; /* Allow room for some ioctls */
6340 h->maxsgentries = readl(&(h->cfgtable->MaxScatterGatherElements));
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06006341 h->fw_support = readl(&(h->cfgtable->misc_fw_support));
Stephen M. Cameronb93d7532010-05-27 15:13:27 -05006342 /*
6343 * Limit in-command s/g elements to 32 save dma'able memory.
6344 * Howvever spec says if 0, use 31
6345 */
6346 h->max_cmd_sg_entries = 31;
6347 if (h->maxsgentries > 512) {
6348 h->max_cmd_sg_entries = 32;
6349 h->chainsize = h->maxsgentries - h->max_cmd_sg_entries + 1;
6350 h->maxsgentries--; /* save one for chain pointer */
6351 } else {
6352 h->maxsgentries = 31; /* default to traditional values */
6353 h->chainsize = 0;
6354 }
Stephen M. Cameron75167d22012-05-01 11:42:51 -05006355
6356 /* Find out what task management functions are supported and cache */
6357 h->TMFSupportFlags = readl(&(h->cfgtable->TMFSupportFlags));
Scott Teel0e7a7fc2014-02-18 13:55:59 -06006358 if (!(HPSATMF_PHYS_TASK_ABORT & h->TMFSupportFlags))
6359 dev_warn(&h->pdev->dev, "Physical aborts not supported\n");
6360 if (!(HPSATMF_LOG_TASK_ABORT & h->TMFSupportFlags))
6361 dev_warn(&h->pdev->dev, "Logical aborts not supported\n");
Stephen M. Cameronb93d7532010-05-27 15:13:27 -05006362}
6363
Stephen M. Cameron76c46e42010-05-27 15:13:32 -05006364static inline bool hpsa_CISS_signature_present(struct ctlr_info *h)
6365{
Akinobu Mita0fc9fd42012-04-04 22:14:59 +09006366 if (!check_signature(h->cfgtable->Signature, "CISS", 4)) {
Stephen M. Cameron76c46e42010-05-27 15:13:32 -05006367 dev_warn(&h->pdev->dev, "not a valid CISS config table\n");
6368 return false;
6369 }
6370 return true;
6371}
6372
Stephen M. Cameron97a5e982013-12-04 17:10:16 -06006373static inline void hpsa_set_driver_support_bits(struct ctlr_info *h)
Stephen M. Cameronf7c39102010-05-27 15:13:38 -05006374{
Stephen M. Cameron97a5e982013-12-04 17:10:16 -06006375 u32 driver_support;
Stephen M. Cameronf7c39102010-05-27 15:13:38 -05006376
Stephen M. Cameron28e13442013-12-04 17:10:21 -06006377#ifdef CONFIG_X86
6378 /* Need to enable prefetch in the SCSI core for 6400 in x86 */
Stephen M. Cameron97a5e982013-12-04 17:10:16 -06006379 driver_support = readl(&(h->cfgtable->driver_support));
6380 driver_support |= ENABLE_SCSI_PREFETCH;
Stephen M. Cameronf7c39102010-05-27 15:13:38 -05006381#endif
Stephen M. Cameron28e13442013-12-04 17:10:21 -06006382 driver_support |= ENABLE_UNIT_ATTN;
6383 writel(driver_support, &(h->cfgtable->driver_support));
Stephen M. Cameronf7c39102010-05-27 15:13:38 -05006384}
6385
Stephen M. Cameron3d0eab62010-05-27 15:13:43 -05006386/* Disable DMA prefetch for the P600. Otherwise an ASIC bug may result
6387 * in a prefetch beyond physical memory.
6388 */
6389static inline void hpsa_p600_dma_prefetch_quirk(struct ctlr_info *h)
6390{
6391 u32 dma_prefetch;
6392
6393 if (h->board_id != 0x3225103C)
6394 return;
6395 dma_prefetch = readl(h->vaddr + I2O_DMA1_CFG);
6396 dma_prefetch |= 0x8000;
6397 writel(dma_prefetch, h->vaddr + I2O_DMA1_CFG);
6398}
6399
Stephen M. Cameron76438d02014-02-18 13:55:43 -06006400static void hpsa_wait_for_clear_event_notify_ack(struct ctlr_info *h)
6401{
6402 int i;
6403 u32 doorbell_value;
6404 unsigned long flags;
6405 /* wait until the clear_event_notify bit 6 is cleared by controller. */
6406 for (i = 0; i < MAX_CONFIG_WAIT; i++) {
6407 spin_lock_irqsave(&h->lock, flags);
6408 doorbell_value = readl(h->vaddr + SA5_DOORBELL);
6409 spin_unlock_irqrestore(&h->lock, flags);
6410 if (!(doorbell_value & DOORBELL_CLEAR_EVENTS))
6411 break;
6412 /* delay and try again */
6413 msleep(20);
6414 }
6415}
6416
Greg Kroah-Hartman6f039792012-12-21 13:08:55 -08006417static void hpsa_wait_for_mode_change_ack(struct ctlr_info *h)
Stephen M. Cameroneb6b2ae2010-05-27 15:13:48 -05006418{
6419 int i;
Stephen M. Cameron6eaf46f2011-01-06 14:48:24 -06006420 u32 doorbell_value;
6421 unsigned long flags;
Stephen M. Cameroneb6b2ae2010-05-27 15:13:48 -05006422
6423 /* under certain very rare conditions, this can take awhile.
6424 * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right
6425 * as we enter this code.)
6426 */
6427 for (i = 0; i < MAX_CONFIG_WAIT; i++) {
Stephen M. Cameron6eaf46f2011-01-06 14:48:24 -06006428 spin_lock_irqsave(&h->lock, flags);
6429 doorbell_value = readl(h->vaddr + SA5_DOORBELL);
6430 spin_unlock_irqrestore(&h->lock, flags);
Dan Carpenter382be662011-02-15 15:33:13 -06006431 if (!(doorbell_value & CFGTBL_ChangeReq))
Stephen M. Cameroneb6b2ae2010-05-27 15:13:48 -05006432 break;
6433 /* delay and try again */
Stephen M. Cameron60d3f5b2011-01-06 14:48:34 -06006434 usleep_range(10000, 20000);
Stephen M. Cameroneb6b2ae2010-05-27 15:13:48 -05006435 }
Stephen M. Cameron3f4336f2010-05-27 15:14:08 -05006436}
6437
Greg Kroah-Hartman6f039792012-12-21 13:08:55 -08006438static int hpsa_enter_simple_mode(struct ctlr_info *h)
Stephen M. Cameron3f4336f2010-05-27 15:14:08 -05006439{
6440 u32 trans_support;
6441
6442 trans_support = readl(&(h->cfgtable->TransportSupport));
6443 if (!(trans_support & SIMPLE_MODE))
6444 return -ENOTSUPP;
6445
6446 h->max_commands = readl(&(h->cfgtable->CmdsOutMax));
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06006447
Stephen M. Cameron3f4336f2010-05-27 15:14:08 -05006448 /* Update the field, and then ring the doorbell */
6449 writel(CFGTBL_Trans_Simple, &(h->cfgtable->HostWrite.TransportRequest));
Stephen M. Cameronb9af4932014-02-18 13:56:29 -06006450 writel(0, &h->cfgtable->HostWrite.command_pool_addr_hi);
Stephen M. Cameron3f4336f2010-05-27 15:14:08 -05006451 writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL);
6452 hpsa_wait_for_mode_change_ack(h);
Stephen M. Cameroneb6b2ae2010-05-27 15:13:48 -05006453 print_cfg_table(&h->pdev->dev, h->cfgtable);
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06006454 if (!(readl(&(h->cfgtable->TransportActive)) & CFGTBL_Trans_Simple))
6455 goto error;
Stephen M. Cameron960a30e2011-02-15 15:33:03 -06006456 h->transMethod = CFGTBL_Trans_Simple;
Stephen M. Cameroneb6b2ae2010-05-27 15:13:48 -05006457 return 0;
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06006458error:
6459 dev_warn(&h->pdev->dev, "unable to get board into simple mode\n");
6460 return -ENODEV;
Stephen M. Cameroneb6b2ae2010-05-27 15:13:48 -05006461}
6462
Greg Kroah-Hartman6f039792012-12-21 13:08:55 -08006463static int hpsa_pci_init(struct ctlr_info *h)
Stephen M. Cameron77c44952010-05-27 15:13:17 -05006464{
Stephen M. Cameroneb6b2ae2010-05-27 15:13:48 -05006465 int prod_index, err;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006466
Stephen M. Camerone5c880d2010-05-27 15:12:52 -05006467 prod_index = hpsa_lookup_board_id(h->pdev, &h->board_id);
6468 if (prod_index < 0)
6469 return -ENODEV;
6470 h->product_name = products[prod_index].product_name;
6471 h->access = *(products[prod_index].access);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006472
Matthew Garrette5a44df2011-11-11 11:14:23 -05006473 pci_disable_link_state(h->pdev, PCIE_LINK_STATE_L0S |
6474 PCIE_LINK_STATE_L1 | PCIE_LINK_STATE_CLKPM);
6475
Stephen M. Cameron55c06c72010-05-27 15:12:46 -05006476 err = pci_enable_device(h->pdev);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006477 if (err) {
Stephen M. Cameron55c06c72010-05-27 15:12:46 -05006478 dev_warn(&h->pdev->dev, "unable to enable PCI device\n");
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006479 return err;
6480 }
6481
Stephen M. Cameron5cb460a2012-05-01 11:42:20 -05006482 /* Enable bus mastering (pci_disable_device may disable this) */
6483 pci_set_master(h->pdev);
6484
Stephen M. Cameronf79cfec2012-01-19 14:00:59 -06006485 err = pci_request_regions(h->pdev, HPSA);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006486 if (err) {
Stephen M. Cameron55c06c72010-05-27 15:12:46 -05006487 dev_err(&h->pdev->dev,
6488 "cannot obtain PCI resources, aborting\n");
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006489 return err;
6490 }
Stephen M. Cameron6b3f4c52010-05-27 15:13:02 -05006491 hpsa_interrupt_mode(h);
Stephen M. Cameron12d2cd42010-06-16 13:51:25 -05006492 err = hpsa_pci_find_memory_BAR(h->pdev, &h->paddr);
Stephen M. Cameron3a7774c2010-05-27 15:13:07 -05006493 if (err)
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006494 goto err_out_free_res;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006495 h->vaddr = remap_pci_mem(h->paddr, 0x250);
Stephen M. Cameron204892e2010-05-27 15:13:22 -05006496 if (!h->vaddr) {
6497 err = -ENOMEM;
6498 goto err_out_free_res;
6499 }
Stephen M. Cameronfe5389c2011-01-06 14:48:03 -06006500 err = hpsa_wait_for_board_state(h->pdev, h->vaddr, BOARD_READY);
Stephen M. Cameron2c4c8c82010-05-27 15:13:12 -05006501 if (err)
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006502 goto err_out_free_res;
Stephen M. Cameron77c44952010-05-27 15:13:17 -05006503 err = hpsa_find_cfgtables(h);
6504 if (err)
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006505 goto err_out_free_res;
Stephen M. Cameronb93d7532010-05-27 15:13:27 -05006506 hpsa_find_board_params(h);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006507
Stephen M. Cameron76c46e42010-05-27 15:13:32 -05006508 if (!hpsa_CISS_signature_present(h)) {
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006509 err = -ENODEV;
6510 goto err_out_free_res;
6511 }
Stephen M. Cameron97a5e982013-12-04 17:10:16 -06006512 hpsa_set_driver_support_bits(h);
Stephen M. Cameron3d0eab62010-05-27 15:13:43 -05006513 hpsa_p600_dma_prefetch_quirk(h);
Stephen M. Cameroneb6b2ae2010-05-27 15:13:48 -05006514 err = hpsa_enter_simple_mode(h);
6515 if (err)
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006516 goto err_out_free_res;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006517 return 0;
6518
6519err_out_free_res:
Stephen M. Cameron204892e2010-05-27 15:13:22 -05006520 if (h->transtable)
6521 iounmap(h->transtable);
6522 if (h->cfgtable)
6523 iounmap(h->cfgtable);
6524 if (h->vaddr)
6525 iounmap(h->vaddr);
Stephen M. Cameronf0bd0b682012-05-01 11:42:09 -05006526 pci_disable_device(h->pdev);
Stephen M. Cameron55c06c72010-05-27 15:12:46 -05006527 pci_release_regions(h->pdev);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006528 return err;
6529}
6530
Greg Kroah-Hartman6f039792012-12-21 13:08:55 -08006531static void hpsa_hba_inquiry(struct ctlr_info *h)
Stephen M. Cameron339b2b12010-02-04 08:42:50 -06006532{
6533 int rc;
6534
6535#define HBA_INQUIRY_BYTE_COUNT 64
6536 h->hba_inquiry_data = kmalloc(HBA_INQUIRY_BYTE_COUNT, GFP_KERNEL);
6537 if (!h->hba_inquiry_data)
6538 return;
6539 rc = hpsa_scsi_do_inquiry(h, RAID_CTLR_LUNID, 0,
6540 h->hba_inquiry_data, HBA_INQUIRY_BYTE_COUNT);
6541 if (rc != 0) {
6542 kfree(h->hba_inquiry_data);
6543 h->hba_inquiry_data = NULL;
6544 }
6545}
6546
Greg Kroah-Hartman6f039792012-12-21 13:08:55 -08006547static int hpsa_init_reset_devices(struct pci_dev *pdev)
Stephen M. Cameron4c2a8c42010-06-16 13:51:35 -05006548{
Stephen M. Cameron1df85522010-06-16 13:51:40 -05006549 int rc, i;
Stephen M. Cameron4c2a8c42010-06-16 13:51:35 -05006550
6551 if (!reset_devices)
6552 return 0;
6553
Stephen M. Cameron1df85522010-06-16 13:51:40 -05006554 /* Reset the controller with a PCI power-cycle or via doorbell */
6555 rc = hpsa_kdump_hard_reset_controller(pdev);
Stephen M. Cameron4c2a8c42010-06-16 13:51:35 -05006556
Stephen M. Cameron1df85522010-06-16 13:51:40 -05006557 /* -ENOTSUPP here means we cannot reset the controller
6558 * but it's already (and still) up and running in
Stephen M. Cameron18867652010-06-16 13:51:45 -05006559 * "performant mode". Or, it might be 640x, which can't reset
6560 * due to concerns about shared bbwc between 6402/6404 pair.
Stephen M. Cameron1df85522010-06-16 13:51:40 -05006561 */
6562 if (rc == -ENOTSUPP)
Stephen M. Cameron64670ac2011-05-03 14:59:51 -05006563 return rc; /* just try to do the kdump anyhow. */
Stephen M. Cameron1df85522010-06-16 13:51:40 -05006564 if (rc)
6565 return -ENODEV;
Stephen M. Cameron4c2a8c42010-06-16 13:51:35 -05006566
6567 /* Now try to get the controller to respond to a no-op */
Stephen M. Cameron2b870cb2011-05-03 14:59:36 -05006568 dev_warn(&pdev->dev, "Waiting for controller to respond to no-op\n");
Stephen M. Cameron4c2a8c42010-06-16 13:51:35 -05006569 for (i = 0; i < HPSA_POST_RESET_NOOP_RETRIES; i++) {
6570 if (hpsa_noop(pdev) == 0)
6571 break;
6572 else
6573 dev_warn(&pdev->dev, "no-op failed%s\n",
6574 (i < 11 ? "; re-trying" : ""));
6575 }
6576 return 0;
6577}
6578
Greg Kroah-Hartman6f039792012-12-21 13:08:55 -08006579static int hpsa_allocate_cmd_pool(struct ctlr_info *h)
Stephen M. Cameron2e9d1b32011-05-03 14:59:20 -05006580{
6581 h->cmd_pool_bits = kzalloc(
6582 DIV_ROUND_UP(h->nr_cmds, BITS_PER_LONG) *
6583 sizeof(unsigned long), GFP_KERNEL);
6584 h->cmd_pool = pci_alloc_consistent(h->pdev,
6585 h->nr_cmds * sizeof(*h->cmd_pool),
6586 &(h->cmd_pool_dhandle));
6587 h->errinfo_pool = pci_alloc_consistent(h->pdev,
6588 h->nr_cmds * sizeof(*h->errinfo_pool),
6589 &(h->errinfo_pool_dhandle));
6590 if ((h->cmd_pool_bits == NULL)
6591 || (h->cmd_pool == NULL)
6592 || (h->errinfo_pool == NULL)) {
6593 dev_err(&h->pdev->dev, "out of memory in %s", __func__);
6594 return -ENOMEM;
6595 }
6596 return 0;
6597}
6598
6599static void hpsa_free_cmd_pool(struct ctlr_info *h)
6600{
6601 kfree(h->cmd_pool_bits);
6602 if (h->cmd_pool)
6603 pci_free_consistent(h->pdev,
6604 h->nr_cmds * sizeof(struct CommandList),
6605 h->cmd_pool, h->cmd_pool_dhandle);
Stephen M. Cameronaca90122014-02-18 13:56:14 -06006606 if (h->ioaccel2_cmd_pool)
6607 pci_free_consistent(h->pdev,
6608 h->nr_cmds * sizeof(*h->ioaccel2_cmd_pool),
6609 h->ioaccel2_cmd_pool, h->ioaccel2_cmd_pool_dhandle);
Stephen M. Cameron2e9d1b32011-05-03 14:59:20 -05006610 if (h->errinfo_pool)
6611 pci_free_consistent(h->pdev,
6612 h->nr_cmds * sizeof(struct ErrorInfo),
6613 h->errinfo_pool,
6614 h->errinfo_pool_dhandle);
Matt Gatese1f7de02014-02-18 13:55:17 -06006615 if (h->ioaccel_cmd_pool)
6616 pci_free_consistent(h->pdev,
6617 h->nr_cmds * sizeof(struct io_accel1_cmd),
6618 h->ioaccel_cmd_pool, h->ioaccel_cmd_pool_dhandle);
Stephen M. Cameron2e9d1b32011-05-03 14:59:20 -05006619}
6620
Stephen M. Cameron41b3cf02014-05-29 10:53:13 -05006621static void hpsa_irq_affinity_hints(struct ctlr_info *h)
6622{
6623 int i, cpu, rc;
6624
6625 cpu = cpumask_first(cpu_online_mask);
6626 for (i = 0; i < h->msix_vector; i++) {
6627 rc = irq_set_affinity_hint(h->intr[i], get_cpu_mask(cpu));
6628 cpu = cpumask_next(cpu, cpu_online_mask);
6629 }
6630}
6631
Stephen M. Cameron0ae01a32011-05-03 14:59:25 -05006632static int hpsa_request_irq(struct ctlr_info *h,
6633 irqreturn_t (*msixhandler)(int, void *),
6634 irqreturn_t (*intxhandler)(int, void *))
6635{
Matt Gates254f7962012-05-01 11:43:06 -05006636 int rc, i;
Stephen M. Cameron0ae01a32011-05-03 14:59:25 -05006637
Matt Gates254f7962012-05-01 11:43:06 -05006638 /*
6639 * initialize h->q[x] = x so that interrupt handlers know which
6640 * queue to process.
6641 */
6642 for (i = 0; i < MAX_REPLY_QUEUES; i++)
6643 h->q[i] = (u8) i;
6644
Hannes Reineckeeee0f032014-01-15 13:30:53 +01006645 if (h->intr_mode == PERF_MODE_INT && h->msix_vector > 0) {
Matt Gates254f7962012-05-01 11:43:06 -05006646 /* If performant mode and MSI-X, use multiple reply queues */
Hannes Reineckeeee0f032014-01-15 13:30:53 +01006647 for (i = 0; i < h->msix_vector; i++)
Matt Gates254f7962012-05-01 11:43:06 -05006648 rc = request_irq(h->intr[i], msixhandler,
6649 0, h->devname,
6650 &h->q[i]);
Stephen M. Cameron41b3cf02014-05-29 10:53:13 -05006651 hpsa_irq_affinity_hints(h);
Matt Gates254f7962012-05-01 11:43:06 -05006652 } else {
6653 /* Use single reply pool */
Hannes Reineckeeee0f032014-01-15 13:30:53 +01006654 if (h->msix_vector > 0 || h->msi_vector) {
Matt Gates254f7962012-05-01 11:43:06 -05006655 rc = request_irq(h->intr[h->intr_mode],
6656 msixhandler, 0, h->devname,
6657 &h->q[h->intr_mode]);
6658 } else {
6659 rc = request_irq(h->intr[h->intr_mode],
6660 intxhandler, IRQF_SHARED, h->devname,
6661 &h->q[h->intr_mode]);
6662 }
6663 }
Stephen M. Cameron0ae01a32011-05-03 14:59:25 -05006664 if (rc) {
6665 dev_err(&h->pdev->dev, "unable to get irq %d for %s\n",
6666 h->intr[h->intr_mode], h->devname);
6667 return -ENODEV;
6668 }
6669 return 0;
6670}
6671
Greg Kroah-Hartman6f039792012-12-21 13:08:55 -08006672static int hpsa_kdump_soft_reset(struct ctlr_info *h)
Stephen M. Cameron64670ac2011-05-03 14:59:51 -05006673{
6674 if (hpsa_send_host_reset(h, RAID_CTLR_LUNID,
6675 HPSA_RESET_TYPE_CONTROLLER)) {
6676 dev_warn(&h->pdev->dev, "Resetting array controller failed.\n");
6677 return -EIO;
6678 }
6679
6680 dev_info(&h->pdev->dev, "Waiting for board to soft reset.\n");
6681 if (hpsa_wait_for_board_state(h->pdev, h->vaddr, BOARD_NOT_READY)) {
6682 dev_warn(&h->pdev->dev, "Soft reset had no effect.\n");
6683 return -1;
6684 }
6685
6686 dev_info(&h->pdev->dev, "Board reset, awaiting READY status.\n");
6687 if (hpsa_wait_for_board_state(h->pdev, h->vaddr, BOARD_READY)) {
6688 dev_warn(&h->pdev->dev, "Board failed to become ready "
6689 "after soft reset.\n");
6690 return -1;
6691 }
6692
6693 return 0;
6694}
6695
Matt Gates254f7962012-05-01 11:43:06 -05006696static void free_irqs(struct ctlr_info *h)
6697{
6698 int i;
6699
6700 if (!h->msix_vector || h->intr_mode != PERF_MODE_INT) {
6701 /* Single reply queue, only one irq to free */
6702 i = h->intr_mode;
Stephen M. Cameron41b3cf02014-05-29 10:53:13 -05006703 irq_set_affinity_hint(h->intr[i], NULL);
Matt Gates254f7962012-05-01 11:43:06 -05006704 free_irq(h->intr[i], &h->q[i]);
6705 return;
6706 }
6707
Stephen M. Cameron41b3cf02014-05-29 10:53:13 -05006708 for (i = 0; i < h->msix_vector; i++) {
6709 irq_set_affinity_hint(h->intr[i], NULL);
Matt Gates254f7962012-05-01 11:43:06 -05006710 free_irq(h->intr[i], &h->q[i]);
Stephen M. Cameron41b3cf02014-05-29 10:53:13 -05006711 }
Matt Gates254f7962012-05-01 11:43:06 -05006712}
6713
Stephen M. Cameron0097f0f2012-05-01 11:43:21 -05006714static void hpsa_free_irqs_and_disable_msix(struct ctlr_info *h)
Stephen M. Cameron64670ac2011-05-03 14:59:51 -05006715{
Matt Gates254f7962012-05-01 11:43:06 -05006716 free_irqs(h);
Stephen M. Cameron64670ac2011-05-03 14:59:51 -05006717#ifdef CONFIG_PCI_MSI
Stephen M. Cameron0097f0f2012-05-01 11:43:21 -05006718 if (h->msix_vector) {
6719 if (h->pdev->msix_enabled)
6720 pci_disable_msix(h->pdev);
6721 } else if (h->msi_vector) {
6722 if (h->pdev->msi_enabled)
6723 pci_disable_msi(h->pdev);
6724 }
Stephen M. Cameron64670ac2011-05-03 14:59:51 -05006725#endif /* CONFIG_PCI_MSI */
Stephen M. Cameron0097f0f2012-05-01 11:43:21 -05006726}
6727
Stephen M. Cameron072b0512014-05-29 10:53:07 -05006728static void hpsa_free_reply_queues(struct ctlr_info *h)
6729{
6730 int i;
6731
6732 for (i = 0; i < h->nreply_queues; i++) {
6733 if (!h->reply_queue[i].head)
6734 continue;
6735 pci_free_consistent(h->pdev, h->reply_queue_size,
6736 h->reply_queue[i].head, h->reply_queue[i].busaddr);
6737 h->reply_queue[i].head = NULL;
6738 h->reply_queue[i].busaddr = 0;
6739 }
6740}
6741
Stephen M. Cameron0097f0f2012-05-01 11:43:21 -05006742static void hpsa_undo_allocations_after_kdump_soft_reset(struct ctlr_info *h)
6743{
6744 hpsa_free_irqs_and_disable_msix(h);
Stephen M. Cameron64670ac2011-05-03 14:59:51 -05006745 hpsa_free_sg_chain_blocks(h);
6746 hpsa_free_cmd_pool(h);
Matt Gatese1f7de02014-02-18 13:55:17 -06006747 kfree(h->ioaccel1_blockFetchTable);
Stephen M. Cameron64670ac2011-05-03 14:59:51 -05006748 kfree(h->blockFetchTable);
Stephen M. Cameron072b0512014-05-29 10:53:07 -05006749 hpsa_free_reply_queues(h);
Stephen M. Cameron64670ac2011-05-03 14:59:51 -05006750 if (h->vaddr)
6751 iounmap(h->vaddr);
6752 if (h->transtable)
6753 iounmap(h->transtable);
6754 if (h->cfgtable)
6755 iounmap(h->cfgtable);
6756 pci_release_regions(h->pdev);
6757 kfree(h);
6758}
6759
Stephen M. Camerona0c12412011-10-26 16:22:04 -05006760/* Called when controller lockup detected. */
6761static void fail_all_cmds_on_list(struct ctlr_info *h, struct list_head *list)
6762{
6763 struct CommandList *c = NULL;
6764
6765 assert_spin_locked(&h->lock);
6766 /* Mark all outstanding commands as failed and complete them. */
6767 while (!list_empty(list)) {
6768 c = list_entry(list->next, struct CommandList, list);
6769 c->err_info->CommandStatus = CMD_HARDWARE_ERR;
Stephen M. Cameron5a3d16f2012-05-01 11:42:46 -05006770 finish_cmd(c);
Stephen M. Camerona0c12412011-10-26 16:22:04 -05006771 }
6772}
6773
Stephen M. Cameron094963d2014-05-29 10:53:18 -05006774static void set_lockup_detected_for_all_cpus(struct ctlr_info *h, u32 value)
6775{
6776 int i, cpu;
6777
6778 cpu = cpumask_first(cpu_online_mask);
6779 for (i = 0; i < num_online_cpus(); i++) {
6780 u32 *lockup_detected;
6781 lockup_detected = per_cpu_ptr(h->lockup_detected, cpu);
6782 *lockup_detected = value;
6783 cpu = cpumask_next(cpu, cpu_online_mask);
6784 }
6785 wmb(); /* be sure the per-cpu variables are out to memory */
6786}
6787
Stephen M. Camerona0c12412011-10-26 16:22:04 -05006788static void controller_lockup_detected(struct ctlr_info *h)
6789{
6790 unsigned long flags;
Stephen M. Cameron094963d2014-05-29 10:53:18 -05006791 u32 lockup_detected;
Stephen M. Camerona0c12412011-10-26 16:22:04 -05006792
Stephen M. Camerona0c12412011-10-26 16:22:04 -05006793 h->access.set_intr_mask(h, HPSA_INTR_OFF);
6794 spin_lock_irqsave(&h->lock, flags);
Stephen M. Cameron094963d2014-05-29 10:53:18 -05006795 lockup_detected = readl(h->vaddr + SA5_SCRATCHPAD_OFFSET);
6796 if (!lockup_detected) {
6797 /* no heartbeat, but controller gave us a zero. */
6798 dev_warn(&h->pdev->dev,
6799 "lockup detected but scratchpad register is zero\n");
6800 lockup_detected = 0xffffffff;
6801 }
6802 set_lockup_detected_for_all_cpus(h, lockup_detected);
Stephen M. Camerona0c12412011-10-26 16:22:04 -05006803 spin_unlock_irqrestore(&h->lock, flags);
6804 dev_warn(&h->pdev->dev, "Controller lockup detected: 0x%08x\n",
Stephen M. Cameron094963d2014-05-29 10:53:18 -05006805 lockup_detected);
Stephen M. Camerona0c12412011-10-26 16:22:04 -05006806 pci_disable_device(h->pdev);
6807 spin_lock_irqsave(&h->lock, flags);
6808 fail_all_cmds_on_list(h, &h->cmpQ);
6809 fail_all_cmds_on_list(h, &h->reqQ);
6810 spin_unlock_irqrestore(&h->lock, flags);
6811}
6812
Stephen M. Camerona0c12412011-10-26 16:22:04 -05006813static void detect_controller_lockup(struct ctlr_info *h)
6814{
6815 u64 now;
6816 u32 heartbeat;
6817 unsigned long flags;
6818
Stephen M. Camerona0c12412011-10-26 16:22:04 -05006819 now = get_jiffies_64();
6820 /* If we've received an interrupt recently, we're ok. */
6821 if (time_after64(h->last_intr_timestamp +
Stephen M. Camerone85c5972012-05-01 11:43:42 -05006822 (h->heartbeat_sample_interval), now))
Stephen M. Camerona0c12412011-10-26 16:22:04 -05006823 return;
6824
6825 /*
6826 * If we've already checked the heartbeat recently, we're ok.
6827 * This could happen if someone sends us a signal. We
6828 * otherwise don't care about signals in this thread.
6829 */
6830 if (time_after64(h->last_heartbeat_timestamp +
Stephen M. Camerone85c5972012-05-01 11:43:42 -05006831 (h->heartbeat_sample_interval), now))
Stephen M. Camerona0c12412011-10-26 16:22:04 -05006832 return;
6833
6834 /* If heartbeat has not changed since we last looked, we're not ok. */
6835 spin_lock_irqsave(&h->lock, flags);
6836 heartbeat = readl(&h->cfgtable->HeartBeat);
6837 spin_unlock_irqrestore(&h->lock, flags);
6838 if (h->last_heartbeat == heartbeat) {
6839 controller_lockup_detected(h);
6840 return;
6841 }
6842
6843 /* We're ok. */
6844 h->last_heartbeat = heartbeat;
6845 h->last_heartbeat_timestamp = now;
6846}
6847
Stephen M. Cameron98465902014-02-21 16:25:00 -06006848static void hpsa_ack_ctlr_events(struct ctlr_info *h)
Stephen M. Cameron76438d02014-02-18 13:55:43 -06006849{
6850 int i;
6851 char *event_type;
6852
Scott Teele863d682014-02-18 13:57:05 -06006853 /* Clear the driver-requested rescan flag */
6854 h->drv_req_rescan = 0;
6855
Stephen M. Cameron76438d02014-02-18 13:55:43 -06006856 /* Ask the controller to clear the events we're handling. */
Stephen M. Cameron1f7cee82014-02-18 13:56:09 -06006857 if ((h->transMethod & (CFGTBL_Trans_io_accel1
6858 | CFGTBL_Trans_io_accel2)) &&
Stephen M. Cameron76438d02014-02-18 13:55:43 -06006859 (h->events & HPSA_EVENT_NOTIFY_ACCEL_IO_PATH_STATE_CHANGE ||
6860 h->events & HPSA_EVENT_NOTIFY_ACCEL_IO_PATH_CONFIG_CHANGE)) {
6861
6862 if (h->events & HPSA_EVENT_NOTIFY_ACCEL_IO_PATH_STATE_CHANGE)
6863 event_type = "state change";
6864 if (h->events & HPSA_EVENT_NOTIFY_ACCEL_IO_PATH_CONFIG_CHANGE)
6865 event_type = "configuration change";
6866 /* Stop sending new RAID offload reqs via the IO accelerator */
6867 scsi_block_requests(h->scsi_host);
6868 for (i = 0; i < h->ndevices; i++)
6869 h->dev[i]->offload_enabled = 0;
Stephen M. Cameron23100dd2014-02-18 13:57:37 -06006870 hpsa_drain_accel_commands(h);
Stephen M. Cameron76438d02014-02-18 13:55:43 -06006871 /* Set 'accelerator path config change' bit */
6872 dev_warn(&h->pdev->dev,
6873 "Acknowledging event: 0x%08x (HP SSD Smart Path %s)\n",
6874 h->events, event_type);
6875 writel(h->events, &(h->cfgtable->clear_event_notify));
6876 /* Set the "clear event notify field update" bit 6 */
6877 writel(DOORBELL_CLEAR_EVENTS, h->vaddr + SA5_DOORBELL);
6878 /* Wait until ctlr clears 'clear event notify field', bit 6 */
6879 hpsa_wait_for_clear_event_notify_ack(h);
6880 scsi_unblock_requests(h->scsi_host);
6881 } else {
6882 /* Acknowledge controller notification events. */
6883 writel(h->events, &(h->cfgtable->clear_event_notify));
6884 writel(DOORBELL_CLEAR_EVENTS, h->vaddr + SA5_DOORBELL);
6885 hpsa_wait_for_clear_event_notify_ack(h);
6886#if 0
6887 writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL);
6888 hpsa_wait_for_mode_change_ack(h);
6889#endif
6890 }
Stephen M. Cameron98465902014-02-21 16:25:00 -06006891 return;
Stephen M. Cameron76438d02014-02-18 13:55:43 -06006892}
6893
6894/* Check a register on the controller to see if there are configuration
6895 * changes (added/changed/removed logical drives, etc.) which mean that
Scott Teele863d682014-02-18 13:57:05 -06006896 * we should rescan the controller for devices.
6897 * Also check flag for driver-initiated rescan.
Stephen M. Cameron76438d02014-02-18 13:55:43 -06006898 */
Stephen M. Cameron98465902014-02-21 16:25:00 -06006899static int hpsa_ctlr_needs_rescan(struct ctlr_info *h)
Stephen M. Cameron76438d02014-02-18 13:55:43 -06006900{
Stephen M. Cameron98465902014-02-21 16:25:00 -06006901 if (h->drv_req_rescan)
6902 return 1;
6903
Stephen M. Cameron76438d02014-02-18 13:55:43 -06006904 if (!(h->fw_support & MISC_FW_EVENT_NOTIFY))
Stephen M. Cameron98465902014-02-21 16:25:00 -06006905 return 0;
Stephen M. Cameron76438d02014-02-18 13:55:43 -06006906
6907 h->events = readl(&(h->cfgtable->event_notify));
Stephen M. Cameron98465902014-02-21 16:25:00 -06006908 return h->events & RESCAN_REQUIRED_EVENT_BITS;
Stephen M. Cameron76438d02014-02-18 13:55:43 -06006909}
6910
Stephen M. Cameron98465902014-02-21 16:25:00 -06006911/*
6912 * Check if any of the offline devices have become ready
6913 */
6914static int hpsa_offline_devices_ready(struct ctlr_info *h)
6915{
6916 unsigned long flags;
6917 struct offline_device_entry *d;
6918 struct list_head *this, *tmp;
6919
6920 spin_lock_irqsave(&h->offline_device_lock, flags);
6921 list_for_each_safe(this, tmp, &h->offline_device_list) {
6922 d = list_entry(this, struct offline_device_entry,
6923 offline_list);
6924 spin_unlock_irqrestore(&h->offline_device_lock, flags);
6925 if (!hpsa_volume_offline(h, d->scsi3addr))
6926 return 1;
6927 spin_lock_irqsave(&h->offline_device_lock, flags);
6928 }
6929 spin_unlock_irqrestore(&h->offline_device_lock, flags);
6930 return 0;
6931}
6932
6933
Stephen M. Cameron8a98db732013-12-04 17:10:07 -06006934static void hpsa_monitor_ctlr_worker(struct work_struct *work)
Stephen M. Camerona0c12412011-10-26 16:22:04 -05006935{
6936 unsigned long flags;
Stephen M. Cameron8a98db732013-12-04 17:10:07 -06006937 struct ctlr_info *h = container_of(to_delayed_work(work),
6938 struct ctlr_info, monitor_ctlr_work);
6939 detect_controller_lockup(h);
Stephen M. Cameron094963d2014-05-29 10:53:18 -05006940 if (lockup_detected(h))
Stephen M. Cameron8a98db732013-12-04 17:10:07 -06006941 return;
Stephen M. Cameron98465902014-02-21 16:25:00 -06006942
6943 if (hpsa_ctlr_needs_rescan(h) || hpsa_offline_devices_ready(h)) {
6944 scsi_host_get(h->scsi_host);
6945 h->drv_req_rescan = 0;
6946 hpsa_ack_ctlr_events(h);
6947 hpsa_scan_start(h->scsi_host);
6948 scsi_host_put(h->scsi_host);
6949 }
6950
Stephen M. Cameron8a98db732013-12-04 17:10:07 -06006951 spin_lock_irqsave(&h->lock, flags);
6952 if (h->remove_in_progress) {
6953 spin_unlock_irqrestore(&h->lock, flags);
Stephen M. Camerona0c12412011-10-26 16:22:04 -05006954 return;
6955 }
Stephen M. Cameron8a98db732013-12-04 17:10:07 -06006956 schedule_delayed_work(&h->monitor_ctlr_work,
6957 h->heartbeat_sample_interval);
6958 spin_unlock_irqrestore(&h->lock, flags);
Stephen M. Camerona0c12412011-10-26 16:22:04 -05006959}
6960
Greg Kroah-Hartman6f039792012-12-21 13:08:55 -08006961static int hpsa_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006962{
Stephen M. Cameron4c2a8c42010-06-16 13:51:35 -05006963 int dac, rc;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006964 struct ctlr_info *h;
Stephen M. Cameron64670ac2011-05-03 14:59:51 -05006965 int try_soft_reset = 0;
6966 unsigned long flags;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006967
6968 if (number_of_controllers == 0)
6969 printk(KERN_INFO DRIVER_NAME "\n");
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006970
Stephen M. Cameron4c2a8c42010-06-16 13:51:35 -05006971 rc = hpsa_init_reset_devices(pdev);
Stephen M. Cameron64670ac2011-05-03 14:59:51 -05006972 if (rc) {
6973 if (rc != -ENOTSUPP)
6974 return rc;
6975 /* If the reset fails in a particular way (it has no way to do
6976 * a proper hard reset, so returns -ENOTSUPP) we can try to do
6977 * a soft reset once we get the controller configured up to the
6978 * point that it can accept a command.
6979 */
6980 try_soft_reset = 1;
6981 rc = 0;
6982 }
6983
6984reinit_after_soft_reset:
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006985
Don Brace303932f2010-02-04 08:42:40 -06006986 /* Command structures must be aligned on a 32-byte boundary because
6987 * the 5 lower bits of the address are used by the hardware. and by
6988 * the driver. See comments in hpsa.h for more info.
6989 */
Don Brace303932f2010-02-04 08:42:40 -06006990 BUILD_BUG_ON(sizeof(struct CommandList) % COMMANDLIST_ALIGNMENT);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006991 h = kzalloc(sizeof(*h), GFP_KERNEL);
6992 if (!h)
Stephen M. Cameronecd9aad2010-02-04 08:41:59 -06006993 return -ENOMEM;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006994
Stephen M. Cameron55c06c72010-05-27 15:12:46 -05006995 h->pdev = pdev;
Stephen M. Camerona9a3a272011-02-15 15:32:53 -06006996 h->intr_mode = hpsa_simple_mode ? SIMPLE_MODE_INT : PERF_MODE_INT;
Stephen M. Cameron9e0fc7642011-02-15 15:32:48 -06006997 INIT_LIST_HEAD(&h->cmpQ);
6998 INIT_LIST_HEAD(&h->reqQ);
Stephen M. Cameron98465902014-02-21 16:25:00 -06006999 INIT_LIST_HEAD(&h->offline_device_list);
Stephen M. Cameron6eaf46f2011-01-06 14:48:24 -06007000 spin_lock_init(&h->lock);
Stephen M. Cameron98465902014-02-21 16:25:00 -06007001 spin_lock_init(&h->offline_device_lock);
Stephen M. Cameron6eaf46f2011-01-06 14:48:24 -06007002 spin_lock_init(&h->scan_lock);
Stephen M. Cameron0390f0c2013-09-23 13:34:12 -05007003 spin_lock_init(&h->passthru_count_lock);
Stephen M. Cameron094963d2014-05-29 10:53:18 -05007004
7005 /* Allocate and clear per-cpu variable lockup_detected */
7006 h->lockup_detected = alloc_percpu(u32);
7007 if (!h->lockup_detected)
7008 goto clean1;
7009 set_lockup_detected_for_all_cpus(h, 0);
7010
Stephen M. Cameron55c06c72010-05-27 15:12:46 -05007011 rc = hpsa_pci_init(h);
Stephen M. Cameronecd9aad2010-02-04 08:41:59 -06007012 if (rc != 0)
Stephen M. Cameronedd16362009-12-08 14:09:11 -08007013 goto clean1;
7014
Stephen M. Cameronf79cfec2012-01-19 14:00:59 -06007015 sprintf(h->devname, HPSA "%d", number_of_controllers);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08007016 h->ctlr = number_of_controllers;
7017 number_of_controllers++;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08007018
7019 /* configure PCI DMA stuff */
Stephen M. Cameronecd9aad2010-02-04 08:41:59 -06007020 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
7021 if (rc == 0) {
Stephen M. Cameronedd16362009-12-08 14:09:11 -08007022 dac = 1;
Stephen M. Cameronecd9aad2010-02-04 08:41:59 -06007023 } else {
7024 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
7025 if (rc == 0) {
7026 dac = 0;
7027 } else {
7028 dev_err(&pdev->dev, "no suitable DMA available\n");
7029 goto clean1;
7030 }
Stephen M. Cameronedd16362009-12-08 14:09:11 -08007031 }
7032
7033 /* make sure the board interrupts are off */
7034 h->access.set_intr_mask(h, HPSA_INTR_OFF);
Stephen M. Cameron10f66012010-06-16 13:51:50 -05007035
Stephen M. Cameron0ae01a32011-05-03 14:59:25 -05007036 if (hpsa_request_irq(h, do_hpsa_intr_msi, do_hpsa_intr_intx))
Stephen M. Cameronedd16362009-12-08 14:09:11 -08007037 goto clean2;
Don Brace303932f2010-02-04 08:42:40 -06007038 dev_info(&pdev->dev, "%s: <0x%x> at IRQ %d%s using DAC\n",
7039 h->devname, pdev->device,
Stephen M. Camerona9a3a272011-02-15 15:32:53 -06007040 h->intr[h->intr_mode], dac ? "" : " not");
Stephen M. Cameron2e9d1b32011-05-03 14:59:20 -05007041 if (hpsa_allocate_cmd_pool(h))
Stephen M. Cameronedd16362009-12-08 14:09:11 -08007042 goto clean4;
Stephen M. Cameron33a2ffc2010-02-25 14:03:27 -06007043 if (hpsa_allocate_sg_chain_blocks(h))
7044 goto clean4;
Stephen M. Camerona08a8472010-02-04 08:43:16 -06007045 init_waitqueue_head(&h->scan_wait_queue);
7046 h->scan_finished = 1; /* no scan currently in progress */
Stephen M. Cameronedd16362009-12-08 14:09:11 -08007047
7048 pci_set_drvdata(pdev, h);
Stephen M. Cameron9a413382011-05-03 14:59:41 -05007049 h->ndevices = 0;
Stephen M. Cameron316b2212014-02-21 16:25:15 -06007050 h->hba_mode_enabled = 0;
Stephen M. Cameron9a413382011-05-03 14:59:41 -05007051 h->scsi_host = NULL;
7052 spin_lock_init(&h->devlock);
Stephen M. Cameron64670ac2011-05-03 14:59:51 -05007053 hpsa_put_ctlr_into_performant_mode(h);
7054
7055 /* At this point, the controller is ready to take commands.
7056 * Now, if reset_devices and the hard reset didn't work, try
7057 * the soft reset and see if that works.
7058 */
7059 if (try_soft_reset) {
7060
7061 /* This is kind of gross. We may or may not get a completion
7062 * from the soft reset command, and if we do, then the value
7063 * from the fifo may or may not be valid. So, we wait 10 secs
7064 * after the reset throwing away any completions we get during
7065 * that time. Unregister the interrupt handler and register
7066 * fake ones to scoop up any residual completions.
7067 */
7068 spin_lock_irqsave(&h->lock, flags);
7069 h->access.set_intr_mask(h, HPSA_INTR_OFF);
7070 spin_unlock_irqrestore(&h->lock, flags);
Matt Gates254f7962012-05-01 11:43:06 -05007071 free_irqs(h);
Stephen M. Cameron64670ac2011-05-03 14:59:51 -05007072 rc = hpsa_request_irq(h, hpsa_msix_discard_completions,
7073 hpsa_intx_discard_completions);
7074 if (rc) {
7075 dev_warn(&h->pdev->dev, "Failed to request_irq after "
7076 "soft reset.\n");
7077 goto clean4;
7078 }
7079
7080 rc = hpsa_kdump_soft_reset(h);
7081 if (rc)
7082 /* Neither hard nor soft reset worked, we're hosed. */
7083 goto clean4;
7084
7085 dev_info(&h->pdev->dev, "Board READY.\n");
7086 dev_info(&h->pdev->dev,
7087 "Waiting for stale completions to drain.\n");
7088 h->access.set_intr_mask(h, HPSA_INTR_ON);
7089 msleep(10000);
7090 h->access.set_intr_mask(h, HPSA_INTR_OFF);
7091
7092 rc = controller_reset_failed(h->cfgtable);
7093 if (rc)
7094 dev_info(&h->pdev->dev,
7095 "Soft reset appears to have failed.\n");
7096
7097 /* since the controller's reset, we have to go back and re-init
7098 * everything. Easiest to just forget what we've done and do it
7099 * all over again.
7100 */
7101 hpsa_undo_allocations_after_kdump_soft_reset(h);
7102 try_soft_reset = 0;
7103 if (rc)
7104 /* don't go to clean4, we already unallocated */
7105 return -ENODEV;
7106
7107 goto reinit_after_soft_reset;
7108 }
Stephen M. Cameronedd16362009-12-08 14:09:11 -08007109
Stephen M. Cameron316b2212014-02-21 16:25:15 -06007110 /* Enable Accelerated IO path at driver layer */
7111 h->acciopath_status = 1;
Scott Teelda0697b2014-02-18 13:57:00 -06007112
Scott Teele863d682014-02-18 13:57:05 -06007113 h->drv_req_rescan = 0;
7114
Stephen M. Cameronedd16362009-12-08 14:09:11 -08007115 /* Turn the interrupts on so we can service requests */
7116 h->access.set_intr_mask(h, HPSA_INTR_ON);
7117
Stephen M. Cameron339b2b12010-02-04 08:42:50 -06007118 hpsa_hba_inquiry(h);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08007119 hpsa_register_scsi(h); /* hook ourselves into SCSI subsystem */
Stephen M. Cameron8a98db732013-12-04 17:10:07 -06007120
7121 /* Monitor the controller for firmware lockups */
7122 h->heartbeat_sample_interval = HEARTBEAT_SAMPLE_INTERVAL;
7123 INIT_DELAYED_WORK(&h->monitor_ctlr_work, hpsa_monitor_ctlr_worker);
7124 schedule_delayed_work(&h->monitor_ctlr_work,
7125 h->heartbeat_sample_interval);
Stephen M. Cameron88bf6d62013-11-01 11:02:25 -05007126 return 0;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08007127
7128clean4:
Stephen M. Cameron33a2ffc2010-02-25 14:03:27 -06007129 hpsa_free_sg_chain_blocks(h);
Stephen M. Cameron2e9d1b32011-05-03 14:59:20 -05007130 hpsa_free_cmd_pool(h);
Matt Gates254f7962012-05-01 11:43:06 -05007131 free_irqs(h);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08007132clean2:
7133clean1:
Stephen M. Cameron094963d2014-05-29 10:53:18 -05007134 if (h->lockup_detected)
7135 free_percpu(h->lockup_detected);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08007136 kfree(h);
Stephen M. Cameronecd9aad2010-02-04 08:41:59 -06007137 return rc;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08007138}
7139
7140static void hpsa_flush_cache(struct ctlr_info *h)
7141{
7142 char *flush_buf;
7143 struct CommandList *c;
Stephen M. Cameron702890e2013-09-23 13:33:30 -05007144
7145 /* Don't bother trying to flush the cache if locked up */
Stephen M. Cameron094963d2014-05-29 10:53:18 -05007146 if (unlikely(lockup_detected(h)))
Stephen M. Cameron702890e2013-09-23 13:33:30 -05007147 return;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08007148 flush_buf = kzalloc(4, GFP_KERNEL);
7149 if (!flush_buf)
7150 return;
7151
7152 c = cmd_special_alloc(h);
7153 if (!c) {
7154 dev_warn(&h->pdev->dev, "cmd_special_alloc returned NULL!\n");
7155 goto out_of_memory;
7156 }
Stephen M. Camerona2dac132013-02-20 11:24:41 -06007157 if (fill_cmd(c, HPSA_CACHE_FLUSH, h, flush_buf, 4, 0,
7158 RAID_CTLR_LUNID, TYPE_CMD)) {
7159 goto out;
7160 }
Stephen M. Cameronedd16362009-12-08 14:09:11 -08007161 hpsa_scsi_do_simple_cmd_with_retry(h, c, PCI_DMA_TODEVICE);
7162 if (c->err_info->CommandStatus != 0)
Stephen M. Camerona2dac132013-02-20 11:24:41 -06007163out:
Stephen M. Cameronedd16362009-12-08 14:09:11 -08007164 dev_warn(&h->pdev->dev,
7165 "error flushing cache on controller\n");
7166 cmd_special_free(h, c);
7167out_of_memory:
7168 kfree(flush_buf);
7169}
7170
7171static void hpsa_shutdown(struct pci_dev *pdev)
7172{
7173 struct ctlr_info *h;
7174
7175 h = pci_get_drvdata(pdev);
7176 /* Turn board interrupts off and send the flush cache command
7177 * sendcmd will turn off interrupt, and send the flush...
7178 * To write all data in the battery backed cache to disks
7179 */
7180 hpsa_flush_cache(h);
7181 h->access.set_intr_mask(h, HPSA_INTR_OFF);
Stephen M. Cameron0097f0f2012-05-01 11:43:21 -05007182 hpsa_free_irqs_and_disable_msix(h);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08007183}
7184
Greg Kroah-Hartman6f039792012-12-21 13:08:55 -08007185static void hpsa_free_device_info(struct ctlr_info *h)
Stephen M. Cameron55e14e72012-01-19 14:00:42 -06007186{
7187 int i;
7188
7189 for (i = 0; i < h->ndevices; i++)
7190 kfree(h->dev[i]);
7191}
7192
Greg Kroah-Hartman6f039792012-12-21 13:08:55 -08007193static void hpsa_remove_one(struct pci_dev *pdev)
Stephen M. Cameronedd16362009-12-08 14:09:11 -08007194{
7195 struct ctlr_info *h;
Stephen M. Cameron8a98db732013-12-04 17:10:07 -06007196 unsigned long flags;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08007197
7198 if (pci_get_drvdata(pdev) == NULL) {
Stephen M. Camerona0c12412011-10-26 16:22:04 -05007199 dev_err(&pdev->dev, "unable to remove device\n");
Stephen M. Cameronedd16362009-12-08 14:09:11 -08007200 return;
7201 }
7202 h = pci_get_drvdata(pdev);
Stephen M. Cameron8a98db732013-12-04 17:10:07 -06007203
7204 /* Get rid of any controller monitoring work items */
7205 spin_lock_irqsave(&h->lock, flags);
7206 h->remove_in_progress = 1;
7207 cancel_delayed_work(&h->monitor_ctlr_work);
7208 spin_unlock_irqrestore(&h->lock, flags);
7209
Stephen M. Cameronedd16362009-12-08 14:09:11 -08007210 hpsa_unregister_scsi(h); /* unhook from SCSI subsystem */
7211 hpsa_shutdown(pdev);
7212 iounmap(h->vaddr);
Stephen M. Cameron204892e2010-05-27 15:13:22 -05007213 iounmap(h->transtable);
7214 iounmap(h->cfgtable);
Stephen M. Cameron55e14e72012-01-19 14:00:42 -06007215 hpsa_free_device_info(h);
Stephen M. Cameron33a2ffc2010-02-25 14:03:27 -06007216 hpsa_free_sg_chain_blocks(h);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08007217 pci_free_consistent(h->pdev,
7218 h->nr_cmds * sizeof(struct CommandList),
7219 h->cmd_pool, h->cmd_pool_dhandle);
7220 pci_free_consistent(h->pdev,
7221 h->nr_cmds * sizeof(struct ErrorInfo),
7222 h->errinfo_pool, h->errinfo_pool_dhandle);
Stephen M. Cameron072b0512014-05-29 10:53:07 -05007223 hpsa_free_reply_queues(h);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08007224 kfree(h->cmd_pool_bits);
Don Brace303932f2010-02-04 08:42:40 -06007225 kfree(h->blockFetchTable);
Matt Gatese1f7de02014-02-18 13:55:17 -06007226 kfree(h->ioaccel1_blockFetchTable);
Stephen M. Cameronaca90122014-02-18 13:56:14 -06007227 kfree(h->ioaccel2_blockFetchTable);
Stephen M. Cameron339b2b12010-02-04 08:42:50 -06007228 kfree(h->hba_inquiry_data);
Stephen M. Cameronf0bd0b682012-05-01 11:42:09 -05007229 pci_disable_device(pdev);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08007230 pci_release_regions(pdev);
Stephen M. Cameron094963d2014-05-29 10:53:18 -05007231 free_percpu(h->lockup_detected);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08007232 kfree(h);
7233}
7234
7235static int hpsa_suspend(__attribute__((unused)) struct pci_dev *pdev,
7236 __attribute__((unused)) pm_message_t state)
7237{
7238 return -ENOSYS;
7239}
7240
7241static int hpsa_resume(__attribute__((unused)) struct pci_dev *pdev)
7242{
7243 return -ENOSYS;
7244}
7245
7246static struct pci_driver hpsa_pci_driver = {
Stephen M. Cameronf79cfec2012-01-19 14:00:59 -06007247 .name = HPSA,
Stephen M. Cameronedd16362009-12-08 14:09:11 -08007248 .probe = hpsa_init_one,
Greg Kroah-Hartman6f039792012-12-21 13:08:55 -08007249 .remove = hpsa_remove_one,
Stephen M. Cameronedd16362009-12-08 14:09:11 -08007250 .id_table = hpsa_pci_device_id, /* id_table */
7251 .shutdown = hpsa_shutdown,
7252 .suspend = hpsa_suspend,
7253 .resume = hpsa_resume,
7254};
7255
Don Brace303932f2010-02-04 08:42:40 -06007256/* Fill in bucket_map[], given nsgs (the max number of
7257 * scatter gather elements supported) and bucket[],
7258 * which is an array of 8 integers. The bucket[] array
7259 * contains 8 different DMA transfer sizes (in 16
7260 * byte increments) which the controller uses to fetch
7261 * commands. This function fills in bucket_map[], which
7262 * maps a given number of scatter gather elements to one of
7263 * the 8 DMA transfer sizes. The point of it is to allow the
7264 * controller to only do as much DMA as needed to fetch the
7265 * command, with the DMA transfer size encoded in the lower
7266 * bits of the command address.
7267 */
7268static void calc_bucket_map(int bucket[], int num_buckets,
Matt Gatese1f7de02014-02-18 13:55:17 -06007269 int nsgs, int min_blocks, int *bucket_map)
Don Brace303932f2010-02-04 08:42:40 -06007270{
7271 int i, j, b, size;
7272
Don Brace303932f2010-02-04 08:42:40 -06007273 /* Note, bucket_map must have nsgs+1 entries. */
7274 for (i = 0; i <= nsgs; i++) {
7275 /* Compute size of a command with i SG entries */
Matt Gatese1f7de02014-02-18 13:55:17 -06007276 size = i + min_blocks;
Don Brace303932f2010-02-04 08:42:40 -06007277 b = num_buckets; /* Assume the biggest bucket */
7278 /* Find the bucket that is just big enough */
Matt Gatese1f7de02014-02-18 13:55:17 -06007279 for (j = 0; j < num_buckets; j++) {
Don Brace303932f2010-02-04 08:42:40 -06007280 if (bucket[j] >= size) {
7281 b = j;
7282 break;
7283 }
7284 }
7285 /* for a command with i SG entries, use bucket b. */
7286 bucket_map[i] = b;
7287 }
7288}
7289
Matt Gatese1f7de02014-02-18 13:55:17 -06007290static void hpsa_enter_performant_mode(struct ctlr_info *h, u32 trans_support)
Don Brace303932f2010-02-04 08:42:40 -06007291{
Stephen M. Cameron6c311b52010-05-27 15:14:19 -05007292 int i;
7293 unsigned long register_value;
Matt Gatese1f7de02014-02-18 13:55:17 -06007294 unsigned long transMethod = CFGTBL_Trans_Performant |
7295 (trans_support & CFGTBL_Trans_use_short_tags) |
Stephen M. Cameronb9af4932014-02-18 13:56:29 -06007296 CFGTBL_Trans_enable_directed_msix |
7297 (trans_support & (CFGTBL_Trans_io_accel1 |
7298 CFGTBL_Trans_io_accel2));
Matt Gatese1f7de02014-02-18 13:55:17 -06007299 struct access_method access = SA5_performant_access;
Stephen M. Camerondef342b2010-05-27 15:14:39 -05007300
7301 /* This is a bit complicated. There are 8 registers on
7302 * the controller which we write to to tell it 8 different
7303 * sizes of commands which there may be. It's a way of
7304 * reducing the DMA done to fetch each command. Encoded into
7305 * each command's tag are 3 bits which communicate to the controller
7306 * which of the eight sizes that command fits within. The size of
7307 * each command depends on how many scatter gather entries there are.
7308 * Each SG entry requires 16 bytes. The eight registers are programmed
7309 * with the number of 16-byte blocks a command of that size requires.
7310 * The smallest command possible requires 5 such 16 byte blocks.
Stephen M. Camerond66ae082012-01-19 14:00:48 -06007311 * the largest command possible requires SG_ENTRIES_IN_CMD + 4 16-byte
Stephen M. Camerondef342b2010-05-27 15:14:39 -05007312 * blocks. Note, this only extends to the SG entries contained
7313 * within the command block, and does not extend to chained blocks
7314 * of SG elements. bft[] contains the eight values we write to
7315 * the registers. They are not evenly distributed, but have more
7316 * sizes for small commands, and fewer sizes for larger commands.
7317 */
Stephen M. Camerond66ae082012-01-19 14:00:48 -06007318 int bft[8] = {5, 6, 8, 10, 12, 20, 28, SG_ENTRIES_IN_CMD + 4};
Stephen M. Cameronb9af4932014-02-18 13:56:29 -06007319#define MIN_IOACCEL2_BFT_ENTRY 5
7320#define HPSA_IOACCEL2_HEADER_SZ 4
7321 int bft2[16] = {MIN_IOACCEL2_BFT_ENTRY, 6, 7, 8, 9, 10, 11, 12,
7322 13, 14, 15, 16, 17, 18, 19,
7323 HPSA_IOACCEL2_HEADER_SZ + IOACCEL2_MAXSGENTRIES};
7324 BUILD_BUG_ON(ARRAY_SIZE(bft2) != 16);
7325 BUILD_BUG_ON(ARRAY_SIZE(bft) != 8);
7326 BUILD_BUG_ON(offsetof(struct io_accel2_cmd, sg) >
7327 16 * MIN_IOACCEL2_BFT_ENTRY);
7328 BUILD_BUG_ON(sizeof(struct ioaccel2_sg_element) != 16);
Stephen M. Camerond66ae082012-01-19 14:00:48 -06007329 BUILD_BUG_ON(28 > SG_ENTRIES_IN_CMD + 4);
Don Brace303932f2010-02-04 08:42:40 -06007330 /* 5 = 1 s/g entry or 4k
7331 * 6 = 2 s/g entry or 8k
7332 * 8 = 4 s/g entry or 16k
7333 * 10 = 6 s/g entry or 24k
7334 */
Don Brace303932f2010-02-04 08:42:40 -06007335
Stephen M. Cameronb3a52e72014-05-29 10:53:23 -05007336 /* If the controller supports either ioaccel method then
7337 * we can also use the RAID stack submit path that does not
7338 * perform the superfluous readl() after each command submission.
7339 */
7340 if (trans_support & (CFGTBL_Trans_io_accel1 | CFGTBL_Trans_io_accel2))
7341 access = SA5_performant_access_no_read;
7342
Don Brace303932f2010-02-04 08:42:40 -06007343 /* Controller spec: zero out this buffer. */
Stephen M. Cameron072b0512014-05-29 10:53:07 -05007344 for (i = 0; i < h->nreply_queues; i++)
7345 memset(h->reply_queue[i].head, 0, h->reply_queue_size);
Don Brace303932f2010-02-04 08:42:40 -06007346
Stephen M. Camerond66ae082012-01-19 14:00:48 -06007347 bft[7] = SG_ENTRIES_IN_CMD + 4;
7348 calc_bucket_map(bft, ARRAY_SIZE(bft),
Matt Gatese1f7de02014-02-18 13:55:17 -06007349 SG_ENTRIES_IN_CMD, 4, h->blockFetchTable);
Don Brace303932f2010-02-04 08:42:40 -06007350 for (i = 0; i < 8; i++)
7351 writel(bft[i], &h->transtable->BlockFetch[i]);
7352
7353 /* size of controller ring buffer */
7354 writel(h->max_commands, &h->transtable->RepQSize);
Matt Gates254f7962012-05-01 11:43:06 -05007355 writel(h->nreply_queues, &h->transtable->RepQCount);
Don Brace303932f2010-02-04 08:42:40 -06007356 writel(0, &h->transtable->RepQCtrAddrLow32);
7357 writel(0, &h->transtable->RepQCtrAddrHigh32);
Matt Gates254f7962012-05-01 11:43:06 -05007358
7359 for (i = 0; i < h->nreply_queues; i++) {
7360 writel(0, &h->transtable->RepQAddr[i].upper);
Stephen M. Cameron072b0512014-05-29 10:53:07 -05007361 writel(h->reply_queue[i].busaddr,
Matt Gates254f7962012-05-01 11:43:06 -05007362 &h->transtable->RepQAddr[i].lower);
7363 }
7364
Stephen M. Cameronb9af4932014-02-18 13:56:29 -06007365 writel(0, &h->cfgtable->HostWrite.command_pool_addr_hi);
Matt Gatese1f7de02014-02-18 13:55:17 -06007366 writel(transMethod, &(h->cfgtable->HostWrite.TransportRequest));
7367 /*
7368 * enable outbound interrupt coalescing in accelerator mode;
7369 */
7370 if (trans_support & CFGTBL_Trans_io_accel1) {
7371 access = SA5_ioaccel_mode1_access;
7372 writel(10, &h->cfgtable->HostWrite.CoalIntDelay);
7373 writel(4, &h->cfgtable->HostWrite.CoalIntCount);
Scott Teelc3497752014-02-18 13:56:34 -06007374 } else {
7375 if (trans_support & CFGTBL_Trans_io_accel2) {
7376 access = SA5_ioaccel_mode2_access;
7377 writel(10, &h->cfgtable->HostWrite.CoalIntDelay);
7378 writel(4, &h->cfgtable->HostWrite.CoalIntCount);
7379 }
Matt Gatese1f7de02014-02-18 13:55:17 -06007380 }
Don Brace303932f2010-02-04 08:42:40 -06007381 writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL);
Stephen M. Cameron3f4336f2010-05-27 15:14:08 -05007382 hpsa_wait_for_mode_change_ack(h);
Don Brace303932f2010-02-04 08:42:40 -06007383 register_value = readl(&(h->cfgtable->TransportActive));
7384 if (!(register_value & CFGTBL_Trans_Performant)) {
7385 dev_warn(&h->pdev->dev, "unable to get board into"
7386 " performant mode\n");
7387 return;
7388 }
Stephen M. Cameron960a30e2011-02-15 15:33:03 -06007389 /* Change the access methods to the performant access methods */
Matt Gatese1f7de02014-02-18 13:55:17 -06007390 h->access = access;
7391 h->transMethod = transMethod;
7392
Stephen M. Cameronb9af4932014-02-18 13:56:29 -06007393 if (!((trans_support & CFGTBL_Trans_io_accel1) ||
7394 (trans_support & CFGTBL_Trans_io_accel2)))
Matt Gatese1f7de02014-02-18 13:55:17 -06007395 return;
7396
Stephen M. Cameronb9af4932014-02-18 13:56:29 -06007397 if (trans_support & CFGTBL_Trans_io_accel1) {
7398 /* Set up I/O accelerator mode */
7399 for (i = 0; i < h->nreply_queues; i++) {
7400 writel(i, h->vaddr + IOACCEL_MODE1_REPLY_QUEUE_INDEX);
7401 h->reply_queue[i].current_entry =
7402 readl(h->vaddr + IOACCEL_MODE1_PRODUCER_INDEX);
7403 }
7404 bft[7] = h->ioaccel_maxsg + 8;
7405 calc_bucket_map(bft, ARRAY_SIZE(bft), h->ioaccel_maxsg, 8,
7406 h->ioaccel1_blockFetchTable);
7407
7408 /* initialize all reply queue entries to unused */
Stephen M. Cameron072b0512014-05-29 10:53:07 -05007409 for (i = 0; i < h->nreply_queues; i++)
7410 memset(h->reply_queue[i].head,
7411 (u8) IOACCEL_MODE1_REPLY_UNUSED,
7412 h->reply_queue_size);
Stephen M. Cameronb9af4932014-02-18 13:56:29 -06007413
7414 /* set all the constant fields in the accelerator command
7415 * frames once at init time to save CPU cycles later.
7416 */
7417 for (i = 0; i < h->nr_cmds; i++) {
7418 struct io_accel1_cmd *cp = &h->ioaccel_cmd_pool[i];
7419
7420 cp->function = IOACCEL1_FUNCTION_SCSIIO;
7421 cp->err_info = (u32) (h->errinfo_pool_dhandle +
7422 (i * sizeof(struct ErrorInfo)));
7423 cp->err_info_len = sizeof(struct ErrorInfo);
7424 cp->sgl_offset = IOACCEL1_SGLOFFSET;
7425 cp->host_context_flags = IOACCEL1_HCFLAGS_CISS_FORMAT;
7426 cp->timeout_sec = 0;
7427 cp->ReplyQueue = 0;
7428 cp->Tag.lower = (i << DIRECT_LOOKUP_SHIFT) |
7429 DIRECT_LOOKUP_BIT;
7430 cp->Tag.upper = 0;
7431 cp->host_addr.lower =
7432 (u32) (h->ioaccel_cmd_pool_dhandle +
7433 (i * sizeof(struct io_accel1_cmd)));
7434 cp->host_addr.upper = 0;
7435 }
7436 } else if (trans_support & CFGTBL_Trans_io_accel2) {
7437 u64 cfg_offset, cfg_base_addr_index;
7438 u32 bft2_offset, cfg_base_addr;
7439 int rc;
7440
7441 rc = hpsa_find_cfg_addrs(h->pdev, h->vaddr, &cfg_base_addr,
7442 &cfg_base_addr_index, &cfg_offset);
7443 BUILD_BUG_ON(offsetof(struct io_accel2_cmd, sg) != 64);
7444 bft2[15] = h->ioaccel_maxsg + HPSA_IOACCEL2_HEADER_SZ;
7445 calc_bucket_map(bft2, ARRAY_SIZE(bft2), h->ioaccel_maxsg,
7446 4, h->ioaccel2_blockFetchTable);
7447 bft2_offset = readl(&h->cfgtable->io_accel_request_size_offset);
7448 BUILD_BUG_ON(offsetof(struct CfgTable,
7449 io_accel_request_size_offset) != 0xb8);
7450 h->ioaccel2_bft2_regs =
7451 remap_pci_mem(pci_resource_start(h->pdev,
7452 cfg_base_addr_index) +
7453 cfg_offset + bft2_offset,
7454 ARRAY_SIZE(bft2) *
7455 sizeof(*h->ioaccel2_bft2_regs));
7456 for (i = 0; i < ARRAY_SIZE(bft2); i++)
7457 writel(bft2[i], &h->ioaccel2_bft2_regs[i]);
Matt Gatese1f7de02014-02-18 13:55:17 -06007458 }
Stephen M. Cameronb9af4932014-02-18 13:56:29 -06007459 writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL);
7460 hpsa_wait_for_mode_change_ack(h);
Matt Gatese1f7de02014-02-18 13:55:17 -06007461}
7462
7463static int hpsa_alloc_ioaccel_cmd_and_bft(struct ctlr_info *h)
7464{
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06007465 h->ioaccel_maxsg =
7466 readl(&(h->cfgtable->io_accel_max_embedded_sg_count));
7467 if (h->ioaccel_maxsg > IOACCEL1_MAXSGENTRIES)
7468 h->ioaccel_maxsg = IOACCEL1_MAXSGENTRIES;
7469
Matt Gatese1f7de02014-02-18 13:55:17 -06007470 /* Command structures must be aligned on a 128-byte boundary
7471 * because the 7 lower bits of the address are used by the
7472 * hardware.
7473 */
Matt Gatese1f7de02014-02-18 13:55:17 -06007474 BUILD_BUG_ON(sizeof(struct io_accel1_cmd) %
7475 IOACCEL1_COMMANDLIST_ALIGNMENT);
7476 h->ioaccel_cmd_pool =
7477 pci_alloc_consistent(h->pdev,
7478 h->nr_cmds * sizeof(*h->ioaccel_cmd_pool),
7479 &(h->ioaccel_cmd_pool_dhandle));
7480
7481 h->ioaccel1_blockFetchTable =
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06007482 kmalloc(((h->ioaccel_maxsg + 1) *
Matt Gatese1f7de02014-02-18 13:55:17 -06007483 sizeof(u32)), GFP_KERNEL);
7484
7485 if ((h->ioaccel_cmd_pool == NULL) ||
7486 (h->ioaccel1_blockFetchTable == NULL))
7487 goto clean_up;
7488
7489 memset(h->ioaccel_cmd_pool, 0,
7490 h->nr_cmds * sizeof(*h->ioaccel_cmd_pool));
7491 return 0;
7492
7493clean_up:
7494 if (h->ioaccel_cmd_pool)
7495 pci_free_consistent(h->pdev,
7496 h->nr_cmds * sizeof(*h->ioaccel_cmd_pool),
7497 h->ioaccel_cmd_pool, h->ioaccel_cmd_pool_dhandle);
7498 kfree(h->ioaccel1_blockFetchTable);
7499 return 1;
Stephen M. Cameron6c311b52010-05-27 15:14:19 -05007500}
7501
Stephen M. Cameronaca90122014-02-18 13:56:14 -06007502static int ioaccel2_alloc_cmds_and_bft(struct ctlr_info *h)
7503{
7504 /* Allocate ioaccel2 mode command blocks and block fetch table */
7505
7506 h->ioaccel_maxsg =
7507 readl(&(h->cfgtable->io_accel_max_embedded_sg_count));
7508 if (h->ioaccel_maxsg > IOACCEL2_MAXSGENTRIES)
7509 h->ioaccel_maxsg = IOACCEL2_MAXSGENTRIES;
7510
Stephen M. Cameronaca90122014-02-18 13:56:14 -06007511 BUILD_BUG_ON(sizeof(struct io_accel2_cmd) %
7512 IOACCEL2_COMMANDLIST_ALIGNMENT);
7513 h->ioaccel2_cmd_pool =
7514 pci_alloc_consistent(h->pdev,
7515 h->nr_cmds * sizeof(*h->ioaccel2_cmd_pool),
7516 &(h->ioaccel2_cmd_pool_dhandle));
7517
7518 h->ioaccel2_blockFetchTable =
7519 kmalloc(((h->ioaccel_maxsg + 1) *
7520 sizeof(u32)), GFP_KERNEL);
7521
7522 if ((h->ioaccel2_cmd_pool == NULL) ||
7523 (h->ioaccel2_blockFetchTable == NULL))
7524 goto clean_up;
7525
7526 memset(h->ioaccel2_cmd_pool, 0,
7527 h->nr_cmds * sizeof(*h->ioaccel2_cmd_pool));
7528 return 0;
7529
7530clean_up:
7531 if (h->ioaccel2_cmd_pool)
7532 pci_free_consistent(h->pdev,
7533 h->nr_cmds * sizeof(*h->ioaccel2_cmd_pool),
7534 h->ioaccel2_cmd_pool, h->ioaccel2_cmd_pool_dhandle);
7535 kfree(h->ioaccel2_blockFetchTable);
7536 return 1;
7537}
7538
Greg Kroah-Hartman6f039792012-12-21 13:08:55 -08007539static void hpsa_put_ctlr_into_performant_mode(struct ctlr_info *h)
Stephen M. Cameron6c311b52010-05-27 15:14:19 -05007540{
7541 u32 trans_support;
Matt Gatese1f7de02014-02-18 13:55:17 -06007542 unsigned long transMethod = CFGTBL_Trans_Performant |
7543 CFGTBL_Trans_use_short_tags;
Matt Gates254f7962012-05-01 11:43:06 -05007544 int i;
Stephen M. Cameron6c311b52010-05-27 15:14:19 -05007545
Stephen M. Cameron02ec19c2011-01-06 14:48:29 -06007546 if (hpsa_simple_mode)
7547 return;
7548
scameron@beardog.cce.hp.com67c99a72014-04-14 14:01:09 -05007549 trans_support = readl(&(h->cfgtable->TransportSupport));
7550 if (!(trans_support & PERFORMANT_MODE))
7551 return;
7552
Matt Gatese1f7de02014-02-18 13:55:17 -06007553 /* Check for I/O accelerator mode support */
7554 if (trans_support & CFGTBL_Trans_io_accel1) {
7555 transMethod |= CFGTBL_Trans_io_accel1 |
7556 CFGTBL_Trans_enable_directed_msix;
7557 if (hpsa_alloc_ioaccel_cmd_and_bft(h))
7558 goto clean_up;
Stephen M. Cameronaca90122014-02-18 13:56:14 -06007559 } else {
7560 if (trans_support & CFGTBL_Trans_io_accel2) {
7561 transMethod |= CFGTBL_Trans_io_accel2 |
7562 CFGTBL_Trans_enable_directed_msix;
7563 if (ioaccel2_alloc_cmds_and_bft(h))
7564 goto clean_up;
7565 }
Matt Gatese1f7de02014-02-18 13:55:17 -06007566 }
7567
Hannes Reineckeeee0f032014-01-15 13:30:53 +01007568 h->nreply_queues = h->msix_vector > 0 ? h->msix_vector : 1;
Stephen M. Cameroncba3d382010-06-16 13:51:56 -05007569 hpsa_get_max_perf_mode_cmds(h);
Stephen M. Cameron6c311b52010-05-27 15:14:19 -05007570 /* Performant mode ring buffer and supporting data structures */
Stephen M. Cameron072b0512014-05-29 10:53:07 -05007571 h->reply_queue_size = h->max_commands * sizeof(u64);
Stephen M. Cameron6c311b52010-05-27 15:14:19 -05007572
Matt Gates254f7962012-05-01 11:43:06 -05007573 for (i = 0; i < h->nreply_queues; i++) {
Stephen M. Cameron072b0512014-05-29 10:53:07 -05007574 h->reply_queue[i].head = pci_alloc_consistent(h->pdev,
7575 h->reply_queue_size,
7576 &(h->reply_queue[i].busaddr));
7577 if (!h->reply_queue[i].head)
7578 goto clean_up;
Matt Gates254f7962012-05-01 11:43:06 -05007579 h->reply_queue[i].size = h->max_commands;
7580 h->reply_queue[i].wraparound = 1; /* spec: init to 1 */
7581 h->reply_queue[i].current_entry = 0;
7582 }
7583
Stephen M. Cameron6c311b52010-05-27 15:14:19 -05007584 /* Need a block fetch table for performant mode */
Stephen M. Camerond66ae082012-01-19 14:00:48 -06007585 h->blockFetchTable = kmalloc(((SG_ENTRIES_IN_CMD + 1) *
Stephen M. Cameron6c311b52010-05-27 15:14:19 -05007586 sizeof(u32)), GFP_KERNEL);
Stephen M. Cameron072b0512014-05-29 10:53:07 -05007587 if (!h->blockFetchTable)
Stephen M. Cameron6c311b52010-05-27 15:14:19 -05007588 goto clean_up;
7589
Matt Gatese1f7de02014-02-18 13:55:17 -06007590 hpsa_enter_performant_mode(h, trans_support);
Don Brace303932f2010-02-04 08:42:40 -06007591 return;
7592
7593clean_up:
Stephen M. Cameron072b0512014-05-29 10:53:07 -05007594 hpsa_free_reply_queues(h);
Don Brace303932f2010-02-04 08:42:40 -06007595 kfree(h->blockFetchTable);
7596}
7597
Stephen M. Cameron23100dd2014-02-18 13:57:37 -06007598static int is_accelerated_cmd(struct CommandList *c)
Stephen M. Cameron76438d02014-02-18 13:55:43 -06007599{
Stephen M. Cameron23100dd2014-02-18 13:57:37 -06007600 return c->cmd_type == CMD_IOACCEL1 || c->cmd_type == CMD_IOACCEL2;
7601}
7602
7603static void hpsa_drain_accel_commands(struct ctlr_info *h)
7604{
7605 struct CommandList *c = NULL;
Stephen M. Cameron76438d02014-02-18 13:55:43 -06007606 unsigned long flags;
Stephen M. Cameron23100dd2014-02-18 13:57:37 -06007607 int accel_cmds_out;
Stephen M. Cameron76438d02014-02-18 13:55:43 -06007608
7609 do { /* wait for all outstanding commands to drain out */
Stephen M. Cameron23100dd2014-02-18 13:57:37 -06007610 accel_cmds_out = 0;
Stephen M. Cameron76438d02014-02-18 13:55:43 -06007611 spin_lock_irqsave(&h->lock, flags);
Stephen M. Cameron23100dd2014-02-18 13:57:37 -06007612 list_for_each_entry(c, &h->cmpQ, list)
7613 accel_cmds_out += is_accelerated_cmd(c);
7614 list_for_each_entry(c, &h->reqQ, list)
7615 accel_cmds_out += is_accelerated_cmd(c);
Stephen M. Cameron76438d02014-02-18 13:55:43 -06007616 spin_unlock_irqrestore(&h->lock, flags);
Stephen M. Cameron23100dd2014-02-18 13:57:37 -06007617 if (accel_cmds_out <= 0)
Stephen M. Cameron76438d02014-02-18 13:55:43 -06007618 break;
7619 msleep(100);
7620 } while (1);
7621}
7622
Stephen M. Cameronedd16362009-12-08 14:09:11 -08007623/*
7624 * This is it. Register the PCI driver information for the cards we control
7625 * the OS will call our registered routines when it finds one of our cards.
7626 */
7627static int __init hpsa_init(void)
7628{
Mike Miller31468402010-02-25 14:03:12 -06007629 return pci_register_driver(&hpsa_pci_driver);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08007630}
7631
7632static void __exit hpsa_cleanup(void)
7633{
7634 pci_unregister_driver(&hpsa_pci_driver);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08007635}
7636
Matt Gatese1f7de02014-02-18 13:55:17 -06007637static void __attribute__((unused)) verify_offsets(void)
7638{
7639#define VERIFY_OFFSET(member, offset) \
Scott Teeldd0e19f2014-02-18 13:57:31 -06007640 BUILD_BUG_ON(offsetof(struct raid_map_data, member) != offset)
7641
7642 VERIFY_OFFSET(structure_size, 0);
7643 VERIFY_OFFSET(volume_blk_size, 4);
7644 VERIFY_OFFSET(volume_blk_cnt, 8);
7645 VERIFY_OFFSET(phys_blk_shift, 16);
7646 VERIFY_OFFSET(parity_rotation_shift, 17);
7647 VERIFY_OFFSET(strip_size, 18);
7648 VERIFY_OFFSET(disk_starting_blk, 20);
7649 VERIFY_OFFSET(disk_blk_cnt, 28);
7650 VERIFY_OFFSET(data_disks_per_row, 36);
7651 VERIFY_OFFSET(metadata_disks_per_row, 38);
7652 VERIFY_OFFSET(row_cnt, 40);
7653 VERIFY_OFFSET(layout_map_count, 42);
7654 VERIFY_OFFSET(flags, 44);
7655 VERIFY_OFFSET(dekindex, 46);
7656 /* VERIFY_OFFSET(reserved, 48 */
7657 VERIFY_OFFSET(data, 64);
7658
7659#undef VERIFY_OFFSET
7660
7661#define VERIFY_OFFSET(member, offset) \
Mike Millerb66cc252014-02-18 13:56:04 -06007662 BUILD_BUG_ON(offsetof(struct io_accel2_cmd, member) != offset)
7663
7664 VERIFY_OFFSET(IU_type, 0);
7665 VERIFY_OFFSET(direction, 1);
7666 VERIFY_OFFSET(reply_queue, 2);
7667 /* VERIFY_OFFSET(reserved1, 3); */
7668 VERIFY_OFFSET(scsi_nexus, 4);
7669 VERIFY_OFFSET(Tag, 8);
7670 VERIFY_OFFSET(cdb, 16);
7671 VERIFY_OFFSET(cciss_lun, 32);
7672 VERIFY_OFFSET(data_len, 40);
7673 VERIFY_OFFSET(cmd_priority_task_attr, 44);
7674 VERIFY_OFFSET(sg_count, 45);
7675 /* VERIFY_OFFSET(reserved3 */
7676 VERIFY_OFFSET(err_ptr, 48);
7677 VERIFY_OFFSET(err_len, 56);
7678 /* VERIFY_OFFSET(reserved4 */
7679 VERIFY_OFFSET(sg, 64);
7680
7681#undef VERIFY_OFFSET
7682
7683#define VERIFY_OFFSET(member, offset) \
Matt Gatese1f7de02014-02-18 13:55:17 -06007684 BUILD_BUG_ON(offsetof(struct io_accel1_cmd, member) != offset)
7685
7686 VERIFY_OFFSET(dev_handle, 0x00);
7687 VERIFY_OFFSET(reserved1, 0x02);
7688 VERIFY_OFFSET(function, 0x03);
7689 VERIFY_OFFSET(reserved2, 0x04);
7690 VERIFY_OFFSET(err_info, 0x0C);
7691 VERIFY_OFFSET(reserved3, 0x10);
7692 VERIFY_OFFSET(err_info_len, 0x12);
7693 VERIFY_OFFSET(reserved4, 0x13);
7694 VERIFY_OFFSET(sgl_offset, 0x14);
7695 VERIFY_OFFSET(reserved5, 0x15);
7696 VERIFY_OFFSET(transfer_len, 0x1C);
7697 VERIFY_OFFSET(reserved6, 0x20);
7698 VERIFY_OFFSET(io_flags, 0x24);
7699 VERIFY_OFFSET(reserved7, 0x26);
7700 VERIFY_OFFSET(LUN, 0x34);
7701 VERIFY_OFFSET(control, 0x3C);
7702 VERIFY_OFFSET(CDB, 0x40);
7703 VERIFY_OFFSET(reserved8, 0x50);
7704 VERIFY_OFFSET(host_context_flags, 0x60);
7705 VERIFY_OFFSET(timeout_sec, 0x62);
7706 VERIFY_OFFSET(ReplyQueue, 0x64);
7707 VERIFY_OFFSET(reserved9, 0x65);
7708 VERIFY_OFFSET(Tag, 0x68);
7709 VERIFY_OFFSET(host_addr, 0x70);
7710 VERIFY_OFFSET(CISS_LUN, 0x78);
7711 VERIFY_OFFSET(SG, 0x78 + 8);
7712#undef VERIFY_OFFSET
7713}
7714
Stephen M. Cameronedd16362009-12-08 14:09:11 -08007715module_init(hpsa_init);
7716module_exit(hpsa_cleanup);