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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * This file contains quirk handling code for PnP devices
3 * Some devices do not report all their resources, and need to have extra
4 * resources added. This is most easily accomplished at initialisation time
5 * when building up the resource structure for the first time.
6 *
7 * Copyright (c) 2000 Peter Denison <peterd@pnd-pc.demon.co.uk>
8 *
9 * Heavily based on PCI quirks handling which is
10 *
11 * Copyright (c) 1999 Martin Mares <mj@ucw.cz>
12 */
13
Linus Torvalds1da177e2005-04-16 15:20:36 -070014#include <linux/types.h>
15#include <linux/kernel.h>
16#include <linux/string.h>
17#include <linux/slab.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070018#include <linux/pnp.h>
Bjorn Helgaasa1e7e632007-05-08 00:36:00 -070019#include <linux/io.h>
Bjorn Helgaasa05d0782007-10-16 23:31:10 -070020#include <linux/kallsyms.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070021#include "base.h"
22
Linus Torvalds1da177e2005-04-16 15:20:36 -070023static void quirk_awe32_resources(struct pnp_dev *dev)
24{
25 struct pnp_port *port, *port2, *port3;
26 struct pnp_option *res = dev->dependent;
27
28 /*
29 * Unfortunately the isapnp_add_port_resource is too tightly bound
30 * into the PnP discovery sequence, and cannot be used. Link in the
31 * two extra ports (at offset 0x400 and 0x800 from the one given) by
32 * hand.
33 */
Bjorn Helgaas9dd78462007-07-26 10:41:20 -070034 for (; res; res = res->next) {
Linus Torvalds1da177e2005-04-16 15:20:36 -070035 port2 = pnp_alloc(sizeof(struct pnp_port));
36 if (!port2)
37 return;
38 port3 = pnp_alloc(sizeof(struct pnp_port));
39 if (!port3) {
40 kfree(port2);
41 return;
42 }
43 port = res->port;
44 memcpy(port2, port, sizeof(struct pnp_port));
45 memcpy(port3, port, sizeof(struct pnp_port));
46 port->next = port2;
47 port2->next = port3;
48 port2->min += 0x400;
49 port2->max += 0x400;
50 port3->min += 0x800;
51 port3->max += 0x800;
Bjorn Helgaas1e3832b2008-04-28 02:15:59 -070052 dev_info(&dev->dev,
53 "AWE32 quirk - added ioports 0x%lx and 0x%lx\n",
54 (unsigned long)port2->min,
55 (unsigned long)port3->min);
Linus Torvalds1da177e2005-04-16 15:20:36 -070056 }
Linus Torvalds1da177e2005-04-16 15:20:36 -070057}
58
59static void quirk_cmi8330_resources(struct pnp_dev *dev)
60{
61 struct pnp_option *res = dev->dependent;
62 unsigned long tmp;
63
Bjorn Helgaas9dd78462007-07-26 10:41:20 -070064 for (; res; res = res->next) {
Linus Torvalds1da177e2005-04-16 15:20:36 -070065
66 struct pnp_irq *irq;
67 struct pnp_dma *dma;
68
Bjorn Helgaas9dd78462007-07-26 10:41:20 -070069 for (irq = res->irq; irq; irq = irq->next) { // Valid irqs are 5, 7, 10
Linus Torvalds1da177e2005-04-16 15:20:36 -070070 tmp = 0x04A0;
71 bitmap_copy(irq->map, &tmp, 16); // 0000 0100 1010 0000
72 }
73
Bjorn Helgaas9dd78462007-07-26 10:41:20 -070074 for (dma = res->dma; dma; dma = dma->next) // Valid 8bit dma channels are 1,3
75 if ((dma->flags & IORESOURCE_DMA_TYPE_MASK) ==
76 IORESOURCE_DMA_8BIT)
Linus Torvalds1da177e2005-04-16 15:20:36 -070077 dma->map = 0x000A;
78 }
Bjorn Helgaas1e3832b2008-04-28 02:15:59 -070079 dev_info(&dev->dev, "CMI8330 quirk - forced possible IRQs to 5, 7, 10 "
80 "and DMA channels to 1, 3\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -070081}
82
83static void quirk_sb16audio_resources(struct pnp_dev *dev)
84{
85 struct pnp_port *port;
86 struct pnp_option *res = dev->dependent;
Bjorn Helgaas9dd78462007-07-26 10:41:20 -070087 int changed = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -070088
89 /*
90 * The default range on the mpu port for these devices is 0x388-0x388.
91 * Here we increase that range so that two such cards can be
92 * auto-configured.
93 */
94
Bjorn Helgaas9dd78462007-07-26 10:41:20 -070095 for (; res; res = res->next) {
Linus Torvalds1da177e2005-04-16 15:20:36 -070096 port = res->port;
Bjorn Helgaas9dd78462007-07-26 10:41:20 -070097 if (!port)
Linus Torvalds1da177e2005-04-16 15:20:36 -070098 continue;
99 port = port->next;
Bjorn Helgaas9dd78462007-07-26 10:41:20 -0700100 if (!port)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700101 continue;
102 port = port->next;
Bjorn Helgaas9dd78462007-07-26 10:41:20 -0700103 if (!port)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700104 continue;
Bjorn Helgaas9dd78462007-07-26 10:41:20 -0700105 if (port->min != port->max)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700106 continue;
107 port->max += 0x70;
108 changed = 1;
109 }
Bjorn Helgaas9dd78462007-07-26 10:41:20 -0700110 if (changed)
Bjorn Helgaas1e3832b2008-04-28 02:15:59 -0700111 dev_info(&dev->dev, "SB audio device quirk - increased port range\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700112}
113
Bjorn Helgaas0509ad52008-03-11 15:24:41 -0600114
115#include <linux/pci.h>
116
117static void quirk_system_pci_resources(struct pnp_dev *dev)
118{
119 struct pci_dev *pdev = NULL;
120 resource_size_t pnp_start, pnp_end, pci_start, pci_end;
121 int i, j;
122
123 /*
124 * Some BIOSes have PNP motherboard devices with resources that
125 * partially overlap PCI BARs. The PNP system driver claims these
126 * motherboard resources, which prevents the normal PCI driver from
127 * requesting them later.
128 *
129 * This patch disables the PNP resources that conflict with PCI BARs
130 * so they won't be claimed by the PNP system driver.
131 */
132 for_each_pci_dev(pdev) {
133 for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
134 if (!(pci_resource_flags(pdev, i) & IORESOURCE_MEM) ||
135 pci_resource_len(pdev, i) == 0)
136 continue;
137
138 pci_start = pci_resource_start(pdev, i);
139 pci_end = pci_resource_end(pdev, i);
140 for (j = 0; j < PNP_MAX_MEM; j++) {
141 if (!pnp_mem_valid(dev, j) ||
142 pnp_mem_len(dev, j) == 0)
143 continue;
144
145 pnp_start = pnp_mem_start(dev, j);
146 pnp_end = pnp_mem_end(dev, j);
147
148 /*
149 * If the PNP region doesn't overlap the PCI
150 * region at all, there's no problem.
151 */
152 if (pnp_end < pci_start || pnp_start > pci_end)
153 continue;
154
155 /*
156 * If the PNP region completely encloses (or is
157 * at least as large as) the PCI region, that's
158 * also OK. For example, this happens when the
159 * PNP device describes a bridge with PCI
160 * behind it.
161 */
162 if (pnp_start <= pci_start &&
163 pnp_end >= pci_end)
164 continue;
165
166 /*
167 * Otherwise, the PNP region overlaps *part* of
168 * the PCI region, and that might prevent a PCI
169 * driver from requesting its resources.
170 */
171 dev_warn(&dev->dev, "mem resource "
172 "(0x%llx-0x%llx) overlaps %s BAR %d "
173 "(0x%llx-0x%llx), disabling\n",
174 (unsigned long long) pnp_start,
175 (unsigned long long) pnp_end,
176 pci_name(pdev), i,
177 (unsigned long long) pci_start,
178 (unsigned long long) pci_end);
179 pnp_mem_flags(dev, j) = 0;
180 }
181 }
182 }
183}
184
Linus Torvalds1da177e2005-04-16 15:20:36 -0700185/*
186 * PnP Quirks
187 * Cards or devices that need some tweaking due to incomplete resource info
188 */
189
190static struct pnp_fixup pnp_fixups[] = {
191 /* Soundblaster awe io port quirk */
Bjorn Helgaas9dd78462007-07-26 10:41:20 -0700192 {"CTL0021", quirk_awe32_resources},
193 {"CTL0022", quirk_awe32_resources},
194 {"CTL0023", quirk_awe32_resources},
Linus Torvalds1da177e2005-04-16 15:20:36 -0700195 /* CMI 8330 interrupt and dma fix */
Bjorn Helgaas9dd78462007-07-26 10:41:20 -0700196 {"@X@0001", quirk_cmi8330_resources},
Linus Torvalds1da177e2005-04-16 15:20:36 -0700197 /* Soundblaster audio device io port range quirk */
Bjorn Helgaas9dd78462007-07-26 10:41:20 -0700198 {"CTL0001", quirk_sb16audio_resources},
199 {"CTL0031", quirk_sb16audio_resources},
200 {"CTL0041", quirk_sb16audio_resources},
201 {"CTL0042", quirk_sb16audio_resources},
202 {"CTL0043", quirk_sb16audio_resources},
203 {"CTL0044", quirk_sb16audio_resources},
204 {"CTL0045", quirk_sb16audio_resources},
Bjorn Helgaas0509ad52008-03-11 15:24:41 -0600205 {"PNP0c01", quirk_system_pci_resources},
206 {"PNP0c02", quirk_system_pci_resources},
Bjorn Helgaas9dd78462007-07-26 10:41:20 -0700207 {""}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700208};
209
210void pnp_fixup_device(struct pnp_dev *dev)
211{
212 int i = 0;
Bjorn Helgaasa05d0782007-10-16 23:31:10 -0700213 void (*quirk)(struct pnp_dev *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700214
215 while (*pnp_fixups[i].id) {
Bjorn Helgaas9dd78462007-07-26 10:41:20 -0700216 if (compare_pnp_id(dev->id, pnp_fixups[i].id)) {
Bjorn Helgaasa05d0782007-10-16 23:31:10 -0700217 quirk = pnp_fixups[i].quirk_function;
218
219#ifdef DEBUG
Bjorn Helgaasb8068162008-04-28 02:15:58 -0700220 dev_dbg(&dev->dev, "calling ");
221 print_fn_descriptor_symbol("%s()\n",
Bjorn Helgaasa05d0782007-10-16 23:31:10 -0700222 (unsigned long) *quirk);
223#endif
224 (*quirk)(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700225 }
226 i++;
227 }
228}