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review.linaro.org / kernel / linux-linaro-stable.git / 7e6dff62dad539cbd608bb3b8b833193d13f00ac / . / include / scsi / scsi_transport_sas.h
blob: 95e2132d485ec0547f3175690082aca766e893b3 [file] [log] [blame]
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200[diff] [blame]1#ifndef SCSI_TRANSPORT_SAS_H
2#define SCSI_TRANSPORT_SAS_H
3
4#include <linux/transport_class.h>
5#include <linux/types.h>
6
7struct scsi_transport_template;
8struct sas_rphy;
9
10
11enum sas_device_type {
12 SAS_PHY_UNUSED,
13 SAS_END_DEVICE,
14 SAS_EDGE_EXPANDER_DEVICE,
15 SAS_FANOUT_EXPANDER_DEVICE,
16};
17
18enum sas_protocol {
19 SAS_PROTOCOL_SATA = 0x01,
20 SAS_PROTOCOL_SMP = 0x02,
21 SAS_PROTOCOL_STP = 0x04,
22 SAS_PROTOCOL_SSP = 0x08,
23};
24
25enum sas_linkrate {
26 SAS_LINK_RATE_UNKNOWN,
27 SAS_PHY_DISABLED,
28 SAS_LINK_RATE_FAILED,
29 SAS_SATA_SPINUP_HOLD,
30 SAS_SATA_PORT_SELECTOR,
31 SAS_LINK_RATE_1_5_GBPS,
32 SAS_LINK_RATE_3_0_GBPS,
James Bottomley7e6dff62006-03-02 14:12:56 -0600[diff] [blame^]33 SAS_LINK_RATE_6_0_GBPS,
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200[diff] [blame]34 SAS_LINK_VIRTUAL,
35};
36
37struct sas_identify {
38 enum sas_device_type device_type;
39 enum sas_protocol initiator_port_protocols;
40 enum sas_protocol target_port_protocols;
41 u64 sas_address;
42 u8 phy_identifier;
43};
44
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200[diff] [blame]45struct sas_phy {
46 struct device dev;
47 int number;
Christoph Hellwigc3ee74c2005-09-19 21:59:42 +0200[diff] [blame]48
49 /* phy identification */
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200[diff] [blame]50 struct sas_identify identify;
Christoph Hellwigc3ee74c2005-09-19 21:59:42 +0200[diff] [blame]51
52 /* phy attributes */
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200[diff] [blame]53 enum sas_linkrate negotiated_linkrate;
54 enum sas_linkrate minimum_linkrate_hw;
55 enum sas_linkrate minimum_linkrate;
56 enum sas_linkrate maximum_linkrate_hw;
57 enum sas_linkrate maximum_linkrate;
58 u8 port_identifier;
Christoph Hellwigc3ee74c2005-09-19 21:59:42 +0200[diff] [blame]59
Christoph Hellwigac01bbb2005-10-19 20:01:17 +0200[diff] [blame]60 /* internal state */
61 unsigned int local_attached : 1;
62
Christoph Hellwigc3ee74c2005-09-19 21:59:42 +0200[diff] [blame]63 /* link error statistics */
64 u32 invalid_dword_count;
65 u32 running_disparity_error_count;
66 u32 loss_of_dword_sync_count;
67 u32 phy_reset_problem_count;
68
69 /* the other end of the link */
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200[diff] [blame]70 struct sas_rphy *rphy;
71};
72
73#define dev_to_phy(d) \
74 container_of((d), struct sas_phy, dev)
75#define transport_class_to_phy(cdev) \
76 dev_to_phy((cdev)->dev)
77#define phy_to_shost(phy) \
78 dev_to_shost((phy)->dev.parent)
79
80struct sas_rphy {
81 struct device dev;
82 struct sas_identify identify;
83 struct list_head list;
84 u32 scsi_target_id;
85};
86
87#define dev_to_rphy(d) \
88 container_of((d), struct sas_rphy, dev)
89#define transport_class_to_rphy(cdev) \
90 dev_to_rphy((cdev)->dev)
91#define rphy_to_shost(rphy) \
92 dev_to_shost((rphy)->dev.parent)
93
Christoph Hellwigc3ee74c2005-09-19 21:59:42 +0200[diff] [blame]94
95/* The functions by which the transport class and the driver communicate */
96struct sas_function_template {
97 int (*get_linkerrors)(struct sas_phy *);
Christoph Hellwiga0125642006-02-16 13:31:47 +0100[diff] [blame]98 int (*get_enclosure_identifier)(struct sas_rphy *, u64 *);
99 int (*get_bay_identifier)(struct sas_rphy *);
Christoph Hellwig07ba3a92005-10-19 20:01:31 +0200[diff] [blame]100 int (*phy_reset)(struct sas_phy *, int);
Christoph Hellwigc3ee74c2005-09-19 21:59:42 +0200[diff] [blame]101};
102
103
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200[diff] [blame]104extern void sas_remove_host(struct Scsi_Host *);
105
106extern struct sas_phy *sas_phy_alloc(struct device *, int);
107extern void sas_phy_free(struct sas_phy *);
108extern int sas_phy_add(struct sas_phy *);
109extern void sas_phy_delete(struct sas_phy *);
110extern int scsi_is_sas_phy(const struct device *);
111
112extern struct sas_rphy *sas_rphy_alloc(struct sas_phy *);
113void sas_rphy_free(struct sas_rphy *);
114extern int sas_rphy_add(struct sas_rphy *);
115extern void sas_rphy_delete(struct sas_rphy *);
116extern int scsi_is_sas_rphy(const struct device *);
117
118extern struct scsi_transport_template *
119sas_attach_transport(struct sas_function_template *);
120extern void sas_release_transport(struct scsi_transport_template *);
121
122#endif /* SCSI_TRANSPORT_SAS_H */