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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
Rene Herman3b73a222008-05-14 16:05:36 -0700114static struct pnp_option *quirk_isapnp_mpu_options(struct pnp_dev *dev)
115{
116 struct pnp_option *head = NULL;
117 struct pnp_option *prev = NULL;
118 struct pnp_option *res;
119
120 /*
121 * Build a functional IRQ-less variant of each MPU option.
122 */
123
124 for (res = dev->dependent; res; res = res->next) {
125 struct pnp_option *curr;
126 struct pnp_port *port;
127 struct pnp_port *copy;
128
129 port = res->port;
130 if (!port || !res->irq)
131 continue;
132
133 copy = pnp_alloc(sizeof *copy);
134 if (!copy)
135 break;
136
137 copy->min = port->min;
138 copy->max = port->max;
139 copy->align = port->align;
140 copy->size = port->size;
141 copy->flags = port->flags;
142
143 curr = pnp_build_option(PNP_RES_PRIORITY_FUNCTIONAL);
144 if (!curr) {
145 kfree(copy);
146 break;
147 }
148 curr->port = copy;
149
150 if (prev)
151 prev->next = curr;
152 else
153 head = curr;
154 prev = curr;
155 }
156 if (head)
157 dev_info(&dev->dev, "adding IRQ-less MPU options\n");
158
159 return head;
160}
161
162static void quirk_ad1815_mpu_resources(struct pnp_dev *dev)
163{
164 struct pnp_option *res;
165 struct pnp_irq *irq;
166
167 /*
168 * Distribute the independent IRQ over the dependent options
169 */
170
171 res = dev->independent;
172 if (!res)
173 return;
174
175 irq = res->irq;
176 if (!irq || irq->next)
177 return;
178
179 res = dev->dependent;
180 if (!res)
181 return;
182
183 while (1) {
184 struct pnp_irq *copy;
185
186 copy = pnp_alloc(sizeof *copy);
187 if (!copy)
188 break;
189
190 memcpy(copy->map, irq->map, sizeof copy->map);
191 copy->flags = irq->flags;
192
193 copy->next = res->irq; /* Yes, this is NULL */
194 res->irq = copy;
195
196 if (!res->next)
197 break;
198 res = res->next;
199 }
200 kfree(irq);
201
202 res->next = quirk_isapnp_mpu_options(dev);
203
204 res = dev->independent;
205 res->irq = NULL;
206}
207
208static void quirk_isapnp_mpu_resources(struct pnp_dev *dev)
209{
210 struct pnp_option *res;
211
212 res = dev->dependent;
213 if (!res)
214 return;
215
216 while (res->next)
217 res = res->next;
218
219 res->next = quirk_isapnp_mpu_options(dev);
220}
Bjorn Helgaas0509ad52008-03-11 15:24:41 -0600221
222#include <linux/pci.h>
223
224static void quirk_system_pci_resources(struct pnp_dev *dev)
225{
226 struct pci_dev *pdev = NULL;
Bjorn Helgaas53052fe2008-04-28 16:34:15 -0600227 struct resource *res;
Bjorn Helgaas0509ad52008-03-11 15:24:41 -0600228 resource_size_t pnp_start, pnp_end, pci_start, pci_end;
229 int i, j;
230
231 /*
232 * Some BIOSes have PNP motherboard devices with resources that
233 * partially overlap PCI BARs. The PNP system driver claims these
234 * motherboard resources, which prevents the normal PCI driver from
235 * requesting them later.
236 *
237 * This patch disables the PNP resources that conflict with PCI BARs
238 * so they won't be claimed by the PNP system driver.
239 */
240 for_each_pci_dev(pdev) {
241 for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
242 if (!(pci_resource_flags(pdev, i) & IORESOURCE_MEM) ||
243 pci_resource_len(pdev, i) == 0)
244 continue;
245
246 pci_start = pci_resource_start(pdev, i);
247 pci_end = pci_resource_end(pdev, i);
Bjorn Helgaas95ab3662008-04-28 16:34:26 -0600248 for (j = 0;
249 (res = pnp_get_resource(dev, IORESOURCE_MEM, j));
250 j++) {
251 if (res->flags & IORESOURCE_UNSET ||
252 (res->start == 0 && res->end == 0))
Bjorn Helgaas0509ad52008-03-11 15:24:41 -0600253 continue;
254
Bjorn Helgaas95ab3662008-04-28 16:34:26 -0600255 pnp_start = res->start;
256 pnp_end = res->end;
Bjorn Helgaas0509ad52008-03-11 15:24:41 -0600257
258 /*
259 * If the PNP region doesn't overlap the PCI
260 * region at all, there's no problem.
261 */
262 if (pnp_end < pci_start || pnp_start > pci_end)
263 continue;
264
265 /*
266 * If the PNP region completely encloses (or is
267 * at least as large as) the PCI region, that's
268 * also OK. For example, this happens when the
269 * PNP device describes a bridge with PCI
270 * behind it.
271 */
272 if (pnp_start <= pci_start &&
273 pnp_end >= pci_end)
274 continue;
275
276 /*
277 * Otherwise, the PNP region overlaps *part* of
278 * the PCI region, and that might prevent a PCI
279 * driver from requesting its resources.
280 */
281 dev_warn(&dev->dev, "mem resource "
282 "(0x%llx-0x%llx) overlaps %s BAR %d "
283 "(0x%llx-0x%llx), disabling\n",
284 (unsigned long long) pnp_start,
285 (unsigned long long) pnp_end,
286 pci_name(pdev), i,
287 (unsigned long long) pci_start,
288 (unsigned long long) pci_end);
Bjorn Helgaas4b34fe12008-06-02 16:42:49 -0600289 res->flags |= IORESOURCE_DISABLED;
Bjorn Helgaas0509ad52008-03-11 15:24:41 -0600290 }
291 }
292 }
293}
294
Linus Torvalds1da177e2005-04-16 15:20:36 -0700295/*
296 * PnP Quirks
297 * Cards or devices that need some tweaking due to incomplete resource info
298 */
299
300static struct pnp_fixup pnp_fixups[] = {
301 /* Soundblaster awe io port quirk */
Bjorn Helgaas9dd78462007-07-26 10:41:20 -0700302 {"CTL0021", quirk_awe32_resources},
303 {"CTL0022", quirk_awe32_resources},
304 {"CTL0023", quirk_awe32_resources},
Linus Torvalds1da177e2005-04-16 15:20:36 -0700305 /* CMI 8330 interrupt and dma fix */
Bjorn Helgaas9dd78462007-07-26 10:41:20 -0700306 {"@X@0001", quirk_cmi8330_resources},
Linus Torvalds1da177e2005-04-16 15:20:36 -0700307 /* Soundblaster audio device io port range quirk */
Bjorn Helgaas9dd78462007-07-26 10:41:20 -0700308 {"CTL0001", quirk_sb16audio_resources},
309 {"CTL0031", quirk_sb16audio_resources},
310 {"CTL0041", quirk_sb16audio_resources},
311 {"CTL0042", quirk_sb16audio_resources},
312 {"CTL0043", quirk_sb16audio_resources},
313 {"CTL0044", quirk_sb16audio_resources},
314 {"CTL0045", quirk_sb16audio_resources},
Rene Herman3b73a222008-05-14 16:05:36 -0700315 /* Add IRQ-less MPU options */
316 {"ADS7151", quirk_ad1815_mpu_resources},
317 {"ADS7181", quirk_isapnp_mpu_resources},
318 {"AZT0002", quirk_isapnp_mpu_resources},
319 /* PnP resources that might overlap PCI BARs */
Bjorn Helgaas0509ad52008-03-11 15:24:41 -0600320 {"PNP0c01", quirk_system_pci_resources},
321 {"PNP0c02", quirk_system_pci_resources},
Bjorn Helgaas9dd78462007-07-26 10:41:20 -0700322 {""}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700323};
324
325void pnp_fixup_device(struct pnp_dev *dev)
326{
Rene Herman726a7a32008-05-14 16:05:33 -0700327 struct pnp_fixup *f;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700328
Rene Herman726a7a32008-05-14 16:05:33 -0700329 for (f = pnp_fixups; *f->id; f++) {
330 if (!compare_pnp_id(dev->id, f->id))
331 continue;
Bjorn Helgaasa05d0782007-10-16 23:31:10 -0700332#ifdef DEBUG
Rene Herman726a7a32008-05-14 16:05:33 -0700333 dev_dbg(&dev->dev, "%s: calling ", f->id);
Linus Torvaldsa442ac52008-05-15 17:50:37 -0700334 print_fn_descriptor_symbol("%s\n", f->quirk_function);
Bjorn Helgaasa05d0782007-10-16 23:31:10 -0700335#endif
Rene Herman726a7a32008-05-14 16:05:33 -0700336 f->quirk_function(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700337 }
338}