blob: 3736bc408adba363f05e54da1762a69a00d3252b [file] [log] [blame]
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>
Bjorn Helgaas1f32ca32008-06-27 16:57:17 -06008 * Copyright (C) 2008 Hewlett-Packard Development Company, L.P.
9 * Bjorn Helgaas <bjorn.helgaas@hp.com>
Linus Torvalds1da177e2005-04-16 15:20:36 -070010 *
11 * Heavily based on PCI quirks handling which is
12 *
13 * Copyright (c) 1999 Martin Mares <mj@ucw.cz>
14 */
15
Linus Torvalds1da177e2005-04-16 15:20:36 -070016#include <linux/types.h>
17#include <linux/kernel.h>
Bjorn Helgaascb171f72014-04-23 10:21:06 -060018#include <linux/pci.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070019#include <linux/string.h>
20#include <linux/slab.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070021#include <linux/pnp.h>
Bjorn Helgaasa1e7e632007-05-08 00:36:00 -070022#include <linux/io.h>
Bjorn Helgaasa05d0782007-10-16 23:31:10 -070023#include <linux/kallsyms.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070024#include "base.h"
25
Bjorn Helgaas1f32ca32008-06-27 16:57:17 -060026static void quirk_awe32_add_ports(struct pnp_dev *dev,
27 struct pnp_option *option,
28 unsigned int offset)
29{
30 struct pnp_option *new_option;
31
32 new_option = kmalloc(sizeof(struct pnp_option), GFP_KERNEL);
33 if (!new_option) {
34 dev_err(&dev->dev, "couldn't add ioport region to option set "
35 "%d\n", pnp_option_set(option));
36 return;
37 }
38
39 *new_option = *option;
40 new_option->u.port.min += offset;
41 new_option->u.port.max += offset;
42 list_add(&new_option->list, &option->list);
43
44 dev_info(&dev->dev, "added ioport region %#llx-%#llx to set %d\n",
45 (unsigned long long) new_option->u.port.min,
46 (unsigned long long) new_option->u.port.max,
47 pnp_option_set(option));
48}
49
Linus Torvalds1da177e2005-04-16 15:20:36 -070050static void quirk_awe32_resources(struct pnp_dev *dev)
51{
Bjorn Helgaas1f32ca32008-06-27 16:57:17 -060052 struct pnp_option *option;
53 unsigned int set = ~0;
Linus Torvalds1da177e2005-04-16 15:20:36 -070054
55 /*
Bjorn Helgaas1f32ca32008-06-27 16:57:17 -060056 * Add two extra ioport regions (at offset 0x400 and 0x800 from the
57 * one given) to every dependent option set.
Linus Torvalds1da177e2005-04-16 15:20:36 -070058 */
Bjorn Helgaas1f32ca32008-06-27 16:57:17 -060059 list_for_each_entry(option, &dev->options, list) {
60 if (pnp_option_is_dependent(option) &&
61 pnp_option_set(option) != set) {
62 set = pnp_option_set(option);
63 quirk_awe32_add_ports(dev, option, 0x800);
64 quirk_awe32_add_ports(dev, option, 0x400);
Linus Torvalds1da177e2005-04-16 15:20:36 -070065 }
Linus Torvalds1da177e2005-04-16 15:20:36 -070066 }
Linus Torvalds1da177e2005-04-16 15:20:36 -070067}
68
69static void quirk_cmi8330_resources(struct pnp_dev *dev)
70{
Bjorn Helgaas1f32ca32008-06-27 16:57:17 -060071 struct pnp_option *option;
72 struct pnp_irq *irq;
73 struct pnp_dma *dma;
Linus Torvalds1da177e2005-04-16 15:20:36 -070074
Bjorn Helgaas1f32ca32008-06-27 16:57:17 -060075 list_for_each_entry(option, &dev->options, list) {
76 if (!pnp_option_is_dependent(option))
77 continue;
Linus Torvalds1da177e2005-04-16 15:20:36 -070078
Bjorn Helgaas1f32ca32008-06-27 16:57:17 -060079 if (option->type == IORESOURCE_IRQ) {
80 irq = &option->u.irq;
81 bitmap_zero(irq->map.bits, PNP_IRQ_NR);
82 __set_bit(5, irq->map.bits);
83 __set_bit(7, irq->map.bits);
84 __set_bit(10, irq->map.bits);
85 dev_info(&dev->dev, "set possible IRQs in "
86 "option set %d to 5, 7, 10\n",
87 pnp_option_set(option));
88 } else if (option->type == IORESOURCE_DMA) {
89 dma = &option->u.dma;
Bjorn Helgaas9dd78462007-07-26 10:41:20 -070090 if ((dma->flags & IORESOURCE_DMA_TYPE_MASK) ==
Bjorn Helgaas1f32ca32008-06-27 16:57:17 -060091 IORESOURCE_DMA_8BIT &&
92 dma->map != 0x0A) {
93 dev_info(&dev->dev, "changing possible "
94 "DMA channel mask in option set %d "
95 "from %#02x to 0x0A (1, 3)\n",
96 pnp_option_set(option), dma->map);
97 dma->map = 0x0A;
98 }
Bjorn Helgaas7aefff52008-06-27 16:57:05 -060099 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700100 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700101}
102
103static void quirk_sb16audio_resources(struct pnp_dev *dev)
104{
Bjorn Helgaas1f32ca32008-06-27 16:57:17 -0600105 struct pnp_option *option;
106 unsigned int prev_option_flags = ~0, n = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700107 struct pnp_port *port;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700108
109 /*
Bjorn Helgaas1f32ca32008-06-27 16:57:17 -0600110 * The default range on the OPL port for these devices is 0x388-0x388.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700111 * Here we increase that range so that two such cards can be
112 * auto-configured.
113 */
Bjorn Helgaas1f32ca32008-06-27 16:57:17 -0600114 list_for_each_entry(option, &dev->options, list) {
115 if (prev_option_flags != option->flags) {
116 prev_option_flags = option->flags;
117 n = 0;
118 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700119
Bjorn Helgaas1f32ca32008-06-27 16:57:17 -0600120 if (pnp_option_is_dependent(option) &&
121 option->type == IORESOURCE_IO) {
122 n++;
123 port = &option->u.port;
124 if (n == 3 && port->min == port->max) {
125 port->max += 0x70;
126 dev_info(&dev->dev, "increased option port "
127 "range from %#llx-%#llx to "
128 "%#llx-%#llx\n",
129 (unsigned long long) port->min,
130 (unsigned long long) port->min,
131 (unsigned long long) port->min,
132 (unsigned long long) port->max);
133 }
134 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700135 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700136}
137
Bjorn Helgaas1f32ca32008-06-27 16:57:17 -0600138static struct pnp_option *pnp_clone_dependent_set(struct pnp_dev *dev,
139 unsigned int set)
Rene Herman3b73a222008-05-14 16:05:36 -0700140{
Bjorn Helgaas1f32ca32008-06-27 16:57:17 -0600141 struct pnp_option *tail = NULL, *first_new_option = NULL;
142 struct pnp_option *option, *new_option;
143 unsigned int flags;
Rene Herman3b73a222008-05-14 16:05:36 -0700144
Bjorn Helgaas1f32ca32008-06-27 16:57:17 -0600145 list_for_each_entry(option, &dev->options, list) {
146 if (pnp_option_is_dependent(option))
147 tail = option;
Rene Herman3b73a222008-05-14 16:05:36 -0700148 }
Bjorn Helgaas1f32ca32008-06-27 16:57:17 -0600149 if (!tail) {
150 dev_err(&dev->dev, "no dependent option sets\n");
151 return NULL;
152 }
Rene Herman3b73a222008-05-14 16:05:36 -0700153
Bjorn Helgaas1f32ca32008-06-27 16:57:17 -0600154 flags = pnp_new_dependent_set(dev, PNP_RES_PRIORITY_FUNCTIONAL);
155 list_for_each_entry(option, &dev->options, list) {
156 if (pnp_option_is_dependent(option) &&
157 pnp_option_set(option) == set) {
158 new_option = kmalloc(sizeof(struct pnp_option),
159 GFP_KERNEL);
160 if (!new_option) {
161 dev_err(&dev->dev, "couldn't clone dependent "
162 "set %d\n", set);
163 return NULL;
164 }
165
166 *new_option = *option;
167 new_option->flags = flags;
168 if (!first_new_option)
169 first_new_option = new_option;
170
171 list_add(&new_option->list, &tail->list);
172 tail = new_option;
173 }
174 }
175
176 return first_new_option;
177}
178
179
180static void quirk_add_irq_optional_dependent_sets(struct pnp_dev *dev)
181{
182 struct pnp_option *new_option;
183 unsigned int num_sets, i, set;
184 struct pnp_irq *irq;
185
186 num_sets = dev->num_dependent_sets;
187 for (i = 0; i < num_sets; i++) {
188 new_option = pnp_clone_dependent_set(dev, i);
189 if (!new_option)
190 return;
191
192 set = pnp_option_set(new_option);
193 while (new_option && pnp_option_set(new_option) == set) {
194 if (new_option->type == IORESOURCE_IRQ) {
195 irq = &new_option->u.irq;
196 irq->flags |= IORESOURCE_IRQ_OPTIONAL;
197 }
198 dbg_pnp_show_option(dev, new_option);
199 new_option = list_entry(new_option->list.next,
200 struct pnp_option, list);
201 }
202
203 dev_info(&dev->dev, "added dependent option set %d (same as "
204 "set %d except IRQ optional)\n", set, i);
205 }
Rene Herman3b73a222008-05-14 16:05:36 -0700206}
207
208static void quirk_ad1815_mpu_resources(struct pnp_dev *dev)
209{
Bjorn Helgaas1f32ca32008-06-27 16:57:17 -0600210 struct pnp_option *option;
211 struct pnp_irq *irq = NULL;
212 unsigned int independent_irqs = 0;
Rene Herman3b73a222008-05-14 16:05:36 -0700213
Bjorn Helgaas1f32ca32008-06-27 16:57:17 -0600214 list_for_each_entry(option, &dev->options, list) {
215 if (option->type == IORESOURCE_IRQ &&
216 !pnp_option_is_dependent(option)) {
217 independent_irqs++;
218 irq = &option->u.irq;
219 }
220 }
Rene Herman3b73a222008-05-14 16:05:36 -0700221
Bjorn Helgaas1f32ca32008-06-27 16:57:17 -0600222 if (independent_irqs != 1)
Rene Herman3b73a222008-05-14 16:05:36 -0700223 return;
224
Bjorn Helgaasd5ebde62008-06-27 16:57:14 -0600225 irq->flags |= IORESOURCE_IRQ_OPTIONAL;
226 dev_info(&dev->dev, "made independent IRQ optional\n");
Rene Herman3b73a222008-05-14 16:05:36 -0700227}
228
Bjorn Helgaas0509ad52008-03-11 15:24:41 -0600229#include <linux/pci.h>
230
231static void quirk_system_pci_resources(struct pnp_dev *dev)
232{
233 struct pci_dev *pdev = NULL;
Bjorn Helgaas53052fe2008-04-28 16:34:15 -0600234 struct resource *res;
Bjorn Helgaas0509ad52008-03-11 15:24:41 -0600235 resource_size_t pnp_start, pnp_end, pci_start, pci_end;
236 int i, j;
237
238 /*
239 * Some BIOSes have PNP motherboard devices with resources that
240 * partially overlap PCI BARs. The PNP system driver claims these
241 * motherboard resources, which prevents the normal PCI driver from
242 * requesting them later.
243 *
244 * This patch disables the PNP resources that conflict with PCI BARs
245 * so they won't be claimed by the PNP system driver.
246 */
247 for_each_pci_dev(pdev) {
248 for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
Rene Hermanb563cf52008-10-15 22:03:58 -0700249 unsigned long type;
Rene Herman999ed652008-07-25 19:44:47 -0700250
251 type = pci_resource_flags(pdev, i) &
252 (IORESOURCE_IO | IORESOURCE_MEM);
253 if (!type || pci_resource_len(pdev, i) == 0)
Bjorn Helgaas0509ad52008-03-11 15:24:41 -0600254 continue;
255
256 pci_start = pci_resource_start(pdev, i);
257 pci_end = pci_resource_end(pdev, i);
Bjorn Helgaas95ab3662008-04-28 16:34:26 -0600258 for (j = 0;
Rene Herman999ed652008-07-25 19:44:47 -0700259 (res = pnp_get_resource(dev, type, j)); j++) {
Bjorn Helgaasaee3ad82008-06-27 16:56:57 -0600260 if (res->start == 0 && res->end == 0)
Bjorn Helgaas0509ad52008-03-11 15:24:41 -0600261 continue;
262
Bjorn Helgaas95ab3662008-04-28 16:34:26 -0600263 pnp_start = res->start;
264 pnp_end = res->end;
Bjorn Helgaas0509ad52008-03-11 15:24:41 -0600265
266 /*
267 * If the PNP region doesn't overlap the PCI
268 * region at all, there's no problem.
269 */
270 if (pnp_end < pci_start || pnp_start > pci_end)
271 continue;
272
273 /*
274 * If the PNP region completely encloses (or is
275 * at least as large as) the PCI region, that's
276 * also OK. For example, this happens when the
277 * PNP device describes a bridge with PCI
278 * behind it.
279 */
280 if (pnp_start <= pci_start &&
281 pnp_end >= pci_end)
282 continue;
283
284 /*
285 * Otherwise, the PNP region overlaps *part* of
286 * the PCI region, and that might prevent a PCI
287 * driver from requesting its resources.
288 */
Bjorn Helgaasc7dabef2009-10-27 13:26:47 -0600289 dev_warn(&dev->dev,
290 "disabling %pR because it overlaps "
291 "%s BAR %d %pR\n", res,
Bjorn Helgaas9a007b32009-10-06 15:34:00 -0600292 pci_name(pdev), i, &pdev->resource[i]);
Bjorn Helgaas4b34fe12008-06-02 16:42:49 -0600293 res->flags |= IORESOURCE_DISABLED;
Bjorn Helgaas0509ad52008-03-11 15:24:41 -0600294 }
295 }
296 }
297}
298
Bjorn Helgaaseb31aae2012-01-05 14:27:24 -0700299#ifdef CONFIG_AMD_NB
300
301#include <asm/amd_nb.h>
302
303static void quirk_amd_mmconfig_area(struct pnp_dev *dev)
304{
305 resource_size_t start, end;
306 struct pnp_resource *pnp_res;
307 struct resource *res;
308 struct resource mmconfig_res, *mmconfig;
309
310 mmconfig = amd_get_mmconfig_range(&mmconfig_res);
311 if (!mmconfig)
312 return;
313
314 list_for_each_entry(pnp_res, &dev->resources, list) {
315 res = &pnp_res->res;
316 if (res->end < mmconfig->start || res->start > mmconfig->end ||
317 (res->start == mmconfig->start && res->end == mmconfig->end))
318 continue;
319
320 dev_info(&dev->dev, FW_BUG
321 "%pR covers only part of AMD MMCONFIG area %pR; adding more reservations\n",
322 res, mmconfig);
323 if (mmconfig->start < res->start) {
324 start = mmconfig->start;
325 end = res->start - 1;
326 pnp_add_mem_resource(dev, start, end, 0);
327 }
328 if (mmconfig->end > res->end) {
329 start = res->end + 1;
330 end = mmconfig->end;
331 pnp_add_mem_resource(dev, start, end, 0);
332 }
333 break;
334 }
335}
336#endif
337
Bjorn Helgaascb171f72014-04-23 10:21:06 -0600338#ifdef CONFIG_X86
339/* Device IDs of parts that have 32KB MCH space */
340static const unsigned int mch_quirk_devices[] = {
341 0x0154, /* Ivy Bridge */
342 0x0c00, /* Haswell */
343};
344
345static struct pci_dev *get_intel_host(void)
346{
347 int i;
348 struct pci_dev *host;
349
350 for (i = 0; i < ARRAY_SIZE(mch_quirk_devices); i++) {
351 host = pci_get_device(PCI_VENDOR_ID_INTEL, mch_quirk_devices[i],
352 NULL);
353 if (host)
354 return host;
355 }
356 return NULL;
357}
358
359static void quirk_intel_mch(struct pnp_dev *dev)
360{
361 struct pci_dev *host;
362 u32 addr_lo, addr_hi;
363 struct pci_bus_region region;
364 struct resource mch;
365 struct pnp_resource *pnp_res;
366 struct resource *res;
367
368 host = get_intel_host();
369 if (!host)
370 return;
371
372 /*
373 * MCHBAR is not an architected PCI BAR, so MCH space is usually
374 * reported as a PNP0C02 resource. The MCH space was originally
375 * 16KB, but is 32KB in newer parts. Some BIOSes still report a
376 * PNP0C02 resource that is only 16KB, which means the rest of the
377 * MCH space is consumed but unreported.
378 */
379
380 /*
381 * Read MCHBAR for Host Member Mapped Register Range Base
382 * https://www-ssl.intel.com/content/www/us/en/processors/core/4th-gen-core-family-desktop-vol-2-datasheet
383 * Sec 3.1.12.
384 */
385 pci_read_config_dword(host, 0x48, &addr_lo);
386 region.start = addr_lo & ~0x7fff;
387 pci_read_config_dword(host, 0x4c, &addr_hi);
388 region.start |= (u64) addr_hi << 32;
389 region.end = region.start + 32*1024 - 1;
390
391 memset(&mch, 0, sizeof(mch));
392 mch.flags = IORESOURCE_MEM;
393 pcibios_bus_to_resource(host->bus, &mch, &region);
394
395 list_for_each_entry(pnp_res, &dev->resources, list) {
396 res = &pnp_res->res;
397 if (res->end < mch.start || res->start > mch.end)
398 continue; /* no overlap */
399 if (res->start == mch.start && res->end == mch.end)
400 continue; /* exact match */
401
402 dev_info(&dev->dev, FW_BUG "PNP resource %pR covers only part of %s Intel MCH; extending to %pR\n",
403 res, pci_name(host), &mch);
404 res->start = mch.start;
405 res->end = mch.end;
406 break;
407 }
408
409 pci_dev_put(host);
410}
411#endif
412
Linus Torvalds1da177e2005-04-16 15:20:36 -0700413/*
414 * PnP Quirks
415 * Cards or devices that need some tweaking due to incomplete resource info
416 */
417
418static struct pnp_fixup pnp_fixups[] = {
419 /* Soundblaster awe io port quirk */
Bjorn Helgaas9dd78462007-07-26 10:41:20 -0700420 {"CTL0021", quirk_awe32_resources},
421 {"CTL0022", quirk_awe32_resources},
422 {"CTL0023", quirk_awe32_resources},
Linus Torvalds1da177e2005-04-16 15:20:36 -0700423 /* CMI 8330 interrupt and dma fix */
Bjorn Helgaas9dd78462007-07-26 10:41:20 -0700424 {"@X@0001", quirk_cmi8330_resources},
Linus Torvalds1da177e2005-04-16 15:20:36 -0700425 /* Soundblaster audio device io port range quirk */
Bjorn Helgaas9dd78462007-07-26 10:41:20 -0700426 {"CTL0001", quirk_sb16audio_resources},
427 {"CTL0031", quirk_sb16audio_resources},
428 {"CTL0041", quirk_sb16audio_resources},
429 {"CTL0042", quirk_sb16audio_resources},
430 {"CTL0043", quirk_sb16audio_resources},
431 {"CTL0044", quirk_sb16audio_resources},
432 {"CTL0045", quirk_sb16audio_resources},
Bjorn Helgaas1f32ca32008-06-27 16:57:17 -0600433 /* Add IRQ-optional MPU options */
Rene Herman3b73a222008-05-14 16:05:36 -0700434 {"ADS7151", quirk_ad1815_mpu_resources},
Bjorn Helgaas1f32ca32008-06-27 16:57:17 -0600435 {"ADS7181", quirk_add_irq_optional_dependent_sets},
436 {"AZT0002", quirk_add_irq_optional_dependent_sets},
Rene Herman3b73a222008-05-14 16:05:36 -0700437 /* PnP resources that might overlap PCI BARs */
Bjorn Helgaas0509ad52008-03-11 15:24:41 -0600438 {"PNP0c01", quirk_system_pci_resources},
439 {"PNP0c02", quirk_system_pci_resources},
Bjorn Helgaaseb31aae2012-01-05 14:27:24 -0700440#ifdef CONFIG_AMD_NB
441 {"PNP0c01", quirk_amd_mmconfig_area},
442#endif
Bjorn Helgaascb171f72014-04-23 10:21:06 -0600443#ifdef CONFIG_X86
444 {"PNP0c02", quirk_intel_mch},
445#endif
Bjorn Helgaas9dd78462007-07-26 10:41:20 -0700446 {""}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700447};
448
449void pnp_fixup_device(struct pnp_dev *dev)
450{
Rene Herman726a7a32008-05-14 16:05:33 -0700451 struct pnp_fixup *f;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700452
Rene Herman726a7a32008-05-14 16:05:33 -0700453 for (f = pnp_fixups; *f->id; f++) {
454 if (!compare_pnp_id(dev->id, f->id))
455 continue;
Bjorn Helgaas2f534322008-08-19 16:53:47 -0600456 pnp_dbg(&dev->dev, "%s: calling %pF\n", f->id,
Bjorn Helgaas668b21d2008-08-19 16:53:31 -0600457 f->quirk_function);
Rene Herman726a7a32008-05-14 16:05:33 -0700458 f->quirk_function(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700459 }
460}