source: GPL/trunk/lib32/pci.c@ 63

Last change on this file since 63 was 63, checked in by vladest, 20 years ago

(Patches by Ruediger Ihle)
Support for IRQs > 15
Fixed resource manager registration
Fixed crash on APM suspend/resume and system shutdown
File size: 32.6 KB
Line 
1/* $Id: pci.c,v 1.1.1.1 2003/07/02 13:57:02 eleph Exp $ */
2/*
3 * OS/2 implementation of Linux PCI functions (using direct port I/O)
4 *
5 * (C) 2000-2002 InnoTek Systemberatung GmbH
6 * (C) 2000-2001 Sander van Leeuwen (sandervl@xs4all.nl)
7 *
8 * Parts based on Linux kernel sources
9 *
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License as
12 * published by the Free Software Foundation; either version 2 of
13 * the License, or (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public
21 * License along with this program; if not, write to the Free
22 * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139,
23 * USA.
24 *
25 */
26
27#include "linux.h"
28#include <linux/init.h>
29#include <linux/poll.h>
30#include <asm/uaccess.h>
31#include <asm/hardirq.h>
32#include <asm/io.h>
33#include <sound/config.h>
34#include <sound/driver.h>
35#include <sound/asound.h>
36
37#define LINUX
38#include <ossidc.h>
39#include <stacktoflat.h>
40#include <dbgos2.h>
41#include <osspci.h>
42
43#define MAX_PCI_BUSSES 16
44#define MAX_PCI_DEVICES 16
45
46struct pci_dev pci_devices[MAX_PCI_DEVICES] = {0};
47struct pci_bus pci_busses[MAX_PCI_BUSSES] = {0};
48
49BOOL fSuspended = FALSE;
50extern int nrCardsDetected;
51
52
53#define PCI_CONFIG_ENABLE 0x80000000
54#define PCI_CONFIG_ADDRESS 0xCF8
55#define PCI_CONFIG_DATA 0xCFC
56
57
58//******************************************************************************
59#define CONFIG_CMD(dev, where) \
60 (PCI_CONFIG_ENABLE | (dev->bus->number<<16) | (dev->devfn<<8) | (where & ~3))
61//******************************************************************************
62int pci_read_config_byte(struct pci_dev *dev, int where, u8 *value)
63{
64 outl(CONFIG_CMD(dev,where), PCI_CONFIG_ADDRESS);
65 *value = inb(PCI_CONFIG_DATA + (where&3));
66 return PCIBIOS_SUCCESSFUL;
67}
68//******************************************************************************
69//******************************************************************************
70int pci_read_config_word(struct pci_dev *dev, int where, u16 *value)
71{
72 outl(CONFIG_CMD(dev,where), PCI_CONFIG_ADDRESS);
73 *value = inw(PCI_CONFIG_DATA + (where&2));
74 return PCIBIOS_SUCCESSFUL;
75}
76//******************************************************************************
77//******************************************************************************
78int pci_read_config_dword(struct pci_dev *dev, int where, u32 *value)
79{
80 outl(CONFIG_CMD(dev,where), PCI_CONFIG_ADDRESS);
81 *value = inl(PCI_CONFIG_DATA);
82 return PCIBIOS_SUCCESSFUL;
83}
84//******************************************************************************
85//******************************************************************************
86int pci_write_config_byte(struct pci_dev *dev, int where, u8 value)
87{
88 outl(CONFIG_CMD(dev,where), PCI_CONFIG_ADDRESS);
89 outb(value, PCI_CONFIG_DATA + (where&3));
90 return PCIBIOS_SUCCESSFUL;
91}
92//******************************************************************************
93//******************************************************************************
94int pci_write_config_word(struct pci_dev *dev, int where, u16 value)
95{
96 outl(CONFIG_CMD(dev,where), PCI_CONFIG_ADDRESS);
97 outw(value, PCI_CONFIG_DATA + (where&2));
98 return PCIBIOS_SUCCESSFUL;
99}
100//******************************************************************************
101//******************************************************************************
102int pci_write_config_dword(struct pci_dev *dev, int where, u32 value)
103{
104 outl(CONFIG_CMD(dev,where), PCI_CONFIG_ADDRESS);
105 outl(value, PCI_CONFIG_DATA);
106 return PCIBIOS_SUCCESSFUL;
107}
108//******************************************************************************
109//******************************************************************************
110int pcidev_prepare(struct pci_dev *dev)
111{
112 dprintf(("pcidev_prepare %x not implemented", dev));
113 return 1; //todo: correct return value??
114}
115//******************************************************************************
116//******************************************************************************
117int pcidev_activate(struct pci_dev *dev)
118{
119 dprintf(("pcidev_activate %x not implemented", dev));
120 return 1; //todo: correct return value??
121}
122//******************************************************************************
123//******************************************************************************
124int pcidev_deactivate(struct pci_dev *dev)
125{
126 dprintf(("pcidev_deactivate %x not implemented", dev));
127 return 1; //todo: correct return value??
128}
129
130
131
132//******************************************************************************
133//******************************************************************************
134static int pci_query_device(unsigned int vendor, unsigned int device,
135 struct pci_dev near *pcidev, int idx)
136{
137 int resNo, addr, found = 0;
138 u32 devNr, busNr, funcNr, detectedId, pciId, cfgaddrreg, temp, temp2;
139 u8 headerType;
140
141 pciId = (device << 16) | vendor;
142
143 cfgaddrreg = inl(PCI_CONFIG_ADDRESS);
144 for(busNr=0;busNr<MAX_PCI_BUSSES;busNr++) //BusNumber<255
145 {
146 for(devNr=0;devNr<32;devNr++)
147 {
148 for(funcNr=0;funcNr<8;funcNr++)
149 {
150 headerType = 0;
151 temp = PCI_CONFIG_ENABLE | (busNr<<16) | (devNr<<11) | (funcNr<<8);
152 outl(temp, PCI_CONFIG_ADDRESS);
153 detectedId = inl(PCI_CONFIG_DATA);
154 if( detectedId != 0xffffffff )
155 {
156 outl(temp | (PCI_HEADER_TYPE & ~3), PCI_CONFIG_ADDRESS);
157 headerType = inb(PCI_CONFIG_DATA + (PCI_HEADER_TYPE & 3));
158 }
159 // printk("det: %x (%x), need: %x\n", detectedId, headerType, pciId);
160
161 if( detectedId == pciId &&
162 (headerType & 0x7f) == PCI_HEADER_TYPE_NORMAL )
163 {
164 if( found++ == idx )
165 {
166 memset((void near *)pcidev, 0, sizeof(struct pci_dev));
167
168 pcidev->vendor = vendor;
169 pcidev->device = device;
170 pcidev->bus = &pci_busses[busNr];
171 pcidev->bus->number = busNr;
172 pcidev->devfn = (devNr << 3) | funcNr;
173 pcidev->hdr_type = headerType & 0x7f;
174
175 pcidev->prepare = pcidev_prepare;
176 pcidev->activate = pcidev_activate;
177 pcidev->deactivate = pcidev_deactivate;
178 pcidev->active = 1;
179 pcidev->ro = 0;
180 pcidev->sibling = NULL;
181 pcidev->next = NULL;
182 pcidev->dma_mask = 0xFFFFFFFF;
183
184 // Subsystem ID
185 pci_read_config_word(pcidev, PCI_SUBSYSTEM_VENDOR_ID,
186 &pcidev->subsystem_vendor);
187 pci_read_config_word(pcidev, PCI_SUBSYSTEM_ID,
188 &pcidev->subsystem_device);
189
190 // I/O and MEM
191 resNo = 0;
192 for( addr = PCI_BASE_ADDRESS_0; addr <= PCI_BASE_ADDRESS_5; addr += 4 )
193 {
194 pci_read_config_dword(pcidev, addr, &temp);
195 if( temp != 0 && temp != 0xffffffff )
196 {
197 pci_write_config_dword(pcidev, addr, 0xffffffff);
198 pci_read_config_dword(pcidev, addr, &temp2);
199 pci_write_config_dword(pcidev, addr, temp);
200
201 if( temp & PCI_BASE_ADDRESS_SPACE_IO )
202 {
203 pcidev->resource[resNo].flags = IORESOURCE_IO | PCI_BASE_ADDRESS_SPACE_IO;
204 pcidev->resource[resNo].start = temp & PCI_BASE_ADDRESS_IO_MASK;
205 pcidev->resource[resNo].end = pcidev->resource[resNo].start +
206 ~(temp2 & PCI_BASE_ADDRESS_IO_MASK) + 1;
207 }
208 else
209 {
210 pcidev->resource[resNo].flags = IORESOURCE_MEM | IORESOURCE_MEM_WRITEABLE;
211 pcidev->resource[resNo].start = temp & PCI_BASE_ADDRESS_MEM_MASK;
212 pcidev->resource[resNo].end = pcidev->resource[resNo].start +
213 ~(temp2 & PCI_BASE_ADDRESS_MEM_MASK) + 1;
214 }
215
216 resNo++;
217
218 }
219 }
220
221 // IRQ and PIN
222 pci_read_config_dword(pcidev, PCI_INTERRUPT_LINE, &temp);
223 if( (u8)temp && (u8)temp != 0xff )
224 {
225 pcidev->irq_resource[0].flags = IORESOURCE_IRQ;
226 pcidev->irq_resource[0].start =
227 pcidev->irq_resource[0].end = temp & 0xffff;
228 pcidev->irq = (u8)temp;
229 }
230
231 return 1;
232 }
233 }
234
235 // don't need to check more, if function 0 not present or single
236 if( funcNr == 0 && !(headerType & 0x80) ) break;
237 }
238 }
239 }
240 outl(cfgaddrreg, PCI_CONFIG_ADDRESS);
241 return 0;
242
243}
244
245//******************************************************************************
246//******************************************************************************
247struct pci_dev *pci_find_device (unsigned int vendor, unsigned int device, struct pci_dev *from)
248{
249 int i, idx;
250
251 if((int)from < 8) {
252 idx = (int)from; // dirty hack
253 // return 0;
254 } else
255 idx = 0;
256
257 for(i=0;i<MAX_PCI_DEVICES;i++)
258 {
259 if(pci_devices[i].devfn == 0)
260 {
261 if( pci_query_device(vendor, device, (struct pci_dev near *)&pci_devices[i], idx) )
262 return &pci_devices[i];
263 else
264 break;
265 }
266 }
267
268 return NULL;
269}
270//******************************************************************************
271//******************************************************************************
272struct resource * __request_region(struct resource *a, unsigned long start,
273 unsigned long n, const char *name)
274{
275 struct resource *resource;
276
277 if(a->flags & IORESOURCE_MEM) {
278 if(RMRequestMem(/*hResMgr,*/ start, n) == FALSE) {
279 printk("RMRequestIO failed for io %x, length %x\n", start, n);
280 return NULL;
281 }
282 }
283 else if(a->flags & IORESOURCE_IO) {
284 if(RMRequestIO(/*hResMgr,*/ start, n) == FALSE) {
285 printk("RMRequestIO failed for io %x, length %x\n", start, n);
286 return NULL;
287 }
288 }
289
290 resource = kmalloc(sizeof(struct resource), GFP_KERNEL);
291 if (resource == NULL)
292 return NULL;
293 resource->name = name;
294 resource->start = start;
295 resource->end = start + n; // - 1;
296 resource->flags = a->flags;
297 resource->parent =
298 resource->child = NULL;
299
300 // insert in list
301 resource->sibling = a->sibling;
302 a->sibling = resource;
303
304 return resource;
305}
306//******************************************************************************
307//******************************************************************************
308void __release_region(struct resource *a,
309 unsigned long start, unsigned long n)
310{
311 struct resource *resource;
312 struct resource **ppres = &a->sibling;
313 unsigned long end = start + n; // - 1;
314
315 while( *ppres )
316 {
317 resource = *ppres;
318
319 if( resource->start == start && resource->end == end )
320 {
321 // remove from list
322 *ppres = resource->sibling;
323 kfree(resource);
324 return;
325 }
326
327 ppres = &resource->sibling;
328 }
329}
330//******************************************************************************
331//******************************************************************************
332int pci_get_flags (struct pci_dev *dev, int n_base)
333{
334 if(n_base >= DEVICE_COUNT_RESOURCE || !dev->resource[n_base].flags) {
335 DebugInt3();
336 return 0;
337 }
338 return dev->resource[n_base].flags;
339}
340//******************************************************************************
341//******************************************************************************
342int pcibios_present(void)
343{
344 printk("pcibios_present -> pretend BIOS present\n");
345 return 1;
346}
347//******************************************************************************
348//******************************************************************************
349struct pci_dev *pci_find_slot (unsigned int bus, unsigned int devfn)
350{
351 printk("pci_find_slot %d %x not implemented!!\n", bus, devfn);
352 DebugInt3();
353 return NULL;
354}
355//******************************************************************************
356//******************************************************************************
357int pci_dma_supported(struct pci_dev *dev, unsigned long mask)
358{
359 printk("pci_dma_supported: return TRUE\n");
360 return 1;
361}
362//******************************************************************************
363//******************************************************************************
364int pci_find_capability(struct pci_dev *dev, int cap)
365{
366 u16 status;
367 u8 pos, id;
368 int ttl = 48;
369
370 pci_read_config_word(dev, PCI_STATUS, &status);
371 if (!(status & PCI_STATUS_CAP_LIST))
372 return 0;
373 pci_read_config_byte(dev, PCI_CAPABILITY_LIST, &pos);
374 while (ttl-- && pos >= 0x40) {
375 pos &= ~3;
376 pci_read_config_byte(dev, pos + PCI_CAP_LIST_ID, &id);
377 if (id == 0xff)
378 break;
379 if (id == cap)
380 return pos;
381 pci_read_config_byte(dev, pos + PCI_CAP_LIST_NEXT, &pos);
382 }
383 return 0;
384}
385//******************************************************************************
386/*
387 * Set power management state of a device. For transitions from state D3
388 * it isn't as straightforward as one could assume since many devices forget
389 * their configuration space during wakeup. Returns old power state.
390 */
391//******************************************************************************
392int pci_set_power_state(struct pci_dev *dev, int new_state)
393{
394 u32 base[5], romaddr;
395 u16 pci_command, pwr_command;
396 u8 pci_latency, pci_cacheline;
397 int i, old_state;
398 int pm = pci_find_capability(dev, PCI_CAP_ID_PM);
399
400 if (!pm)
401 return 0;
402 pci_read_config_word(dev, pm + PCI_PM_CTRL, &pwr_command);
403 old_state = pwr_command & PCI_PM_CTRL_STATE_MASK;
404 if (old_state == new_state)
405 return old_state;
406 if (old_state == 3) {
407 pci_read_config_word(dev, PCI_COMMAND, &pci_command);
408 pci_write_config_word(dev, PCI_COMMAND, pci_command & ~(PCI_COMMAND_IO | PCI_COMMAND_MEMORY));
409 for (i = 0; i < 5; i++)
410 pci_read_config_dword(dev, PCI_BASE_ADDRESS_0 + i*4, &base[i]);
411 pci_read_config_dword(dev, PCI_ROM_ADDRESS, &romaddr);
412 pci_read_config_byte(dev, PCI_LATENCY_TIMER, &pci_latency);
413 pci_read_config_byte(dev, PCI_CACHE_LINE_SIZE, &pci_cacheline);
414 pci_write_config_word(dev, pm + PCI_PM_CTRL, new_state);
415 for (i = 0; i < 5; i++)
416 pci_write_config_dword(dev, PCI_BASE_ADDRESS_0 + i*4, base[i]);
417 pci_write_config_dword(dev, PCI_ROM_ADDRESS, romaddr);
418 pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq);
419 pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, pci_cacheline);
420 pci_write_config_byte(dev, PCI_LATENCY_TIMER, pci_latency);
421 pci_write_config_word(dev, PCI_COMMAND, pci_command);
422 } else
423 pci_write_config_word(dev, pm + PCI_PM_CTRL, (pwr_command & ~PCI_PM_CTRL_STATE_MASK) | new_state);
424 return old_state;
425}
426//******************************************************************************
427/*
428 * Initialize device before it's used by a driver. Ask low-level code
429 * to enable I/O and memory. Wake up the device if it was suspended.
430 * Beware, this function can fail.
431 */
432//******************************************************************************
433int pci_enable_device(struct pci_dev *dev)
434{
435 u16 pci_command;
436
437 printk("pci_enable_device %x\n", dev);
438
439 pci_read_config_word(dev, PCI_COMMAND, &pci_command);
440 pci_write_config_word(dev, PCI_COMMAND, pci_command | (PCI_COMMAND_IO | PCI_COMMAND_MEMORY));
441 pci_set_power_state(dev, 0);
442 return 0;
443}
444//******************************************************************************
445//******************************************************************************
446int pci_register_driver(struct pci_driver *driver)
447{
448 int i, j, dev_num;
449 struct pci_dev *pcidev;
450
451 for( i = 0; driver->id_table[i].vendor; i++)
452 {
453 dev_num = 0;
454 while( (pcidev = pci_find_device(driver->id_table[i].vendor,
455 driver->id_table[i].device,
456 (struct pci_dev *)dev_num)) != NULL )
457 {
458 RMInit();
459 if( driver->probe) {
460 printk("found: %x, id: %x idx %i\n",driver->id_table[i].vendor, driver->id_table[i].device, dev_num);
461
462 if(driver->probe(pcidev, &driver->id_table[i]) == 0) {
463 pcidev->pcidriver = (void *)driver;
464 pcidev->current_state = 4;
465
466 // create adapter
467 RMDone((driver->id_table[i].vendor << 16) | driver->id_table[i].device);
468
469 return 1;
470 }
471 else pcidev->devfn = 0;
472 }
473
474 RMDone(0);
475
476 dev_num++;
477
478 }
479 }
480 return 0;
481}
482//******************************************************************************
483//******************************************************************************
484int pci_module_init(struct pci_driver *drv)
485{
486 int res = pci_register_driver(drv);
487 if (res < 0)
488 return res;
489 if (res == 0)
490 return -ENODEV;
491 nrCardsDetected+=res;
492 return 0;
493}
494//******************************************************************************
495//******************************************************************************
496int pci_unregister_driver(struct pci_driver *driver)
497{
498 struct pci_dev *pcidev;
499 int i = 0, j;
500
501 while(driver->id_table[i].vendor)
502 {
503 for(j=0;j<MAX_PCI_DEVICES;j++)
504 {
505 if(pci_devices[j].vendor == driver->id_table[i].vendor &&
506 pci_devices[j].device == driver->id_table[i].device)
507 {
508 if(driver->remove) {
509 driver->remove(&pci_devices[j]);
510 }
511 }
512 }
513 i++;
514 }
515 return 0;
516}
517//******************************************************************************
518//******************************************************************************
519void pci_set_master(struct pci_dev *dev)
520{
521 u16 cmd;
522
523 pci_read_config_word(dev, PCI_COMMAND, &cmd);
524 if (! (cmd & PCI_COMMAND_MASTER)) {
525 dprintf(("pci_set_master %x", dev));
526 cmd |= PCI_COMMAND_MASTER;
527 pci_write_config_word(dev, PCI_COMMAND, cmd);
528 }
529 return;
530}
531//******************************************************************************
532// * Register a device with power management
533//******************************************************************************
534struct pm_dev *pm_register(pm_dev_t type, unsigned long id, pm_callback callback)
535{
536 dprintf(("pm_register STUB"));
537 DebugInt3();
538 return NULL;
539}
540//******************************************************************************
541// * Unregister a device with power management
542//******************************************************************************
543void pm_unregister(struct pm_dev *dev)
544{
545 dprintf(("pm_unregister STUB"));
546}
547//******************************************************************************
548//******************************************************************************
549int __compat_get_order(unsigned long size)
550{
551 int order;
552
553 size = (size-1) >> (PAGE_SHIFT-1);
554 order = -1;
555 do {
556 size >>= 1;
557 order++;
558 } while (size);
559 return order;
560}
561//******************************************************************************
562//******************************************************************************
563void *pci_alloc_consistent(struct pci_dev *hwdev,
564 long size, dma_addr_t *dma_handle)
565{
566 void *ret = NULL;
567 int gfp = GFP_ATOMIC;
568 int order;
569#ifdef DEBUG
570 dprintf(("pci_alloc_consistent %d mask %x", size, (hwdev) ? hwdev->dma_mask : 0));
571#endif
572 if (hwdev == NULL || hwdev->dma_mask != 0xffffffff) {
573 //try not to exhaust low memory (< 16mb) so allocate from the high region first
574 //if that doesn't satisfy the dma mask requirement, then get it from the low
575 //regino anyway
576 if(hwdev->dma_mask > 0x00ffffff) {
577 order = __compat_get_order(size);
578 ret = (void *)__get_free_pages(gfp|GFP_DMAHIGHMEM, order);
579 *dma_handle = virt_to_bus(ret);
580 if(*dma_handle > hwdev->dma_mask) {
581 free_pages((unsigned long)ret, __compat_get_order(size));
582 //be sure and allocate below 16 mb
583 gfp |= GFP_DMA;
584 ret = NULL;
585 }
586 }
587 else { //must always allocate below 16 mb
588 gfp |= GFP_DMA;
589 }
590 }
591 if(ret == NULL) {
592 ret = (void *)__get_free_pages(gfp, __compat_get_order(size));
593 }
594
595 if (ret != NULL) {
596 memset(ret, 0, size);
597 *dma_handle = virt_to_bus(ret);
598 }
599 return ret;
600}
601//******************************************************************************
602//******************************************************************************
603void pci_free_consistent(struct pci_dev *hwdev, long size,
604 void *vaddr, dma_addr_t dma_handle)
605{
606 free_pages((unsigned long)vaddr, __compat_get_order(size));
607}
608//******************************************************************************
609//******************************************************************************
610void pci_set_driver_data (struct pci_dev *dev, void *driver_data)
611{
612 if (dev)
613 dev->driver_data = driver_data;
614}
615//******************************************************************************
616//******************************************************************************
617void *pci_get_driver_data (struct pci_dev *dev)
618{
619 if (dev)
620 return dev->driver_data;
621 return 0;
622}
623//******************************************************************************
624//******************************************************************************
625unsigned long pci_get_dma_mask (struct pci_dev *dev)
626{
627 if (dev)
628 return dev->dma_mask;
629 return 0;
630}
631//******************************************************************************
632//******************************************************************************
633void pci_set_dma_mask (struct pci_dev *dev, unsigned long mask)
634{
635 if (dev)
636 dev->dma_mask = mask;
637}
638//******************************************************************************
639//******************************************************************************
640int release_resource(struct resource *newres)
641{
642 return 0;
643}
644
645//******************************************************************************
646//******************************************************************************
647int pci_set_latency_time(struct pci_dev *dev, int latency)
648{
649 pci_write_config_byte(dev, PCI_LATENCY_TIMER, latency);
650 return 0;
651}
652
653//******************************************************************************
654//******************************************************************************
655/**
656 * pci_save_state - save the PCI configuration space of a device before suspending
657 * @dev: - PCI device that we're dealing with
658 * @buffer: - buffer to hold config space context
659 *
660 * @buffer must be large enough to hold the entire PCI 2.2 config space
661 * (>= 64 bytes).
662 */
663int pci_orig_save_state(struct pci_dev *dev, u32 *buffer)
664{
665 int i;
666 if (buffer) {
667 /* XXX: 100% dword access ok here? */
668 for (i = 0; i < 16; i++)
669 pci_read_config_dword(dev, i * 4,&buffer[i]);
670 }
671 return 0;
672}
673
674/**
675 * pci_restore_state - Restore the saved state of a PCI device
676 * @dev: - PCI device that we're dealing with
677 * @buffer: - saved PCI config space
678 *
679 */
680int
681pci_orig_restore_state(struct pci_dev *dev, u32 *buffer)
682{
683 int i;
684
685 if (buffer) {
686 for (i = 0; i < 16; i++)
687 pci_write_config_dword(dev,i * 4, buffer[i]);
688 }
689 /*
690 * otherwise, write the context information we know from bootup.
691 * This works around a problem where warm-booting from Windows
692 * combined with a D3(hot)->D0 transition causes PCI config
693 * header data to be forgotten.
694 */
695 else {
696 for (i = 0; i < 6; i ++)
697 pci_write_config_dword(dev,
698 PCI_BASE_ADDRESS_0 + (i * 4),
699 dev->resource[i].start);
700 pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq);
701 }
702 return 0;
703}
704
705struct saved_config_tbl {
706 struct pci_dev *pci;
707 u32 config[16];
708};
709static struct saved_config_tbl saved_tbl[16];
710
711void pci_save_state(struct pci_dev *pci)
712{
713 int i;
714 /* FIXME: mutex needed for race? */
715 for (i = 0; i < ARRAY_SIZE(saved_tbl); i++) {
716 if (! saved_tbl[i].pci) {
717 saved_tbl[i].pci = pci;
718 pci_orig_save_state(pci, saved_tbl[i].config);
719 return;
720 }
721 }
722 printk(KERN_DEBUG "snd: no pci config space found!\n");
723}
724
725void pci_restore_state(struct pci_dev *pci)
726{
727 int i;
728 /* FIXME: mutex needed for race? */
729 for (i = 0; i < ARRAY_SIZE(saved_tbl); i++) {
730 if (saved_tbl[i].pci == pci) {
731 saved_tbl[i].pci = NULL;
732 pci_orig_restore_state(pci, saved_tbl[i].config);
733 return;
734 }
735 }
736 printk(KERN_DEBUG "snd: no saved pci config!\n");
737}
738
739void pci_disable_device(struct pci_dev *dev)
740{
741 u16 pci_command;
742
743 pci_read_config_word(dev, PCI_COMMAND, &pci_command);
744 if (pci_command & PCI_COMMAND_MASTER) {
745 pci_command &= ~PCI_COMMAND_MASTER;
746 pci_write_config_word(dev, PCI_COMMAND, pci_command);
747 }
748}
749
750int pci_request_region(struct pci_dev *pdev, int bar, char *res_name)
751{
752 int flags;
753
754 if (pci_resource_len(pdev, bar) == 0)
755 return 0;
756 flags = pci_get_flags(pdev, bar);
757 if (flags & IORESOURCE_IO) {
758 if (check_region(pci_resource_start(pdev, bar), pci_resource_len(pdev, bar)))
759 goto err_out;
760 request_region(pci_resource_start(pdev, bar),
761 pci_resource_len(pdev, bar), res_name);
762 }
763 else if (flags & IORESOURCE_MEM) {
764 if (check_mem_region(pci_resource_start(pdev, bar), pci_resource_len(pdev, bar)))
765 goto err_out;
766 request_mem_region(pci_resource_start(pdev, bar),
767 pci_resource_len(pdev, bar), res_name);
768 }
769
770 return 0;
771
772err_out:
773 printk(KERN_WARNING "PCI: Unable to reserve %s region #%d:%lx@%lx for device %s\n",
774 flags & IORESOURCE_IO ? "I/O" : "mem",
775 bar + 1, /* PCI BAR # */
776 pci_resource_len(pdev, bar), pci_resource_start(pdev, bar),
777 res_name);
778 return -EBUSY;
779}
780
781void pci_release_region(struct pci_dev *pdev, int bar)
782{
783 int flags;
784
785 if (pci_resource_len(pdev, bar) == 0)
786 return;
787 flags = pci_get_flags(pdev, bar);
788 if (flags & IORESOURCE_IO) {
789 release_region(pci_resource_start(pdev, bar),
790 pci_resource_len(pdev, bar));
791 }
792 else if (flags & IORESOURCE_MEM) {
793 release_mem_region(pci_resource_start(pdev, bar),
794 pci_resource_len(pdev, bar));
795 }
796}
797
798int pci_request_regions(struct pci_dev *pdev, char *res_name)
799{
800 int i;
801
802 for (i = 0; i < 6; i++)
803 if (pci_request_region(pdev, i, res_name))
804 goto err;
805 return 0;
806 err:
807 while (--i >= 0)
808 pci_release_region(pdev, i);
809 return -EBUSY;
810}
811
812void pci_release_regions(struct pci_dev *pdev)
813{
814 int i;
815 for (i = 0; i < 6; i++)
816 pci_release_region(pdev, i);
817}
818
819const struct pci_device_id * pci_match_device(const struct pci_device_id *ids, struct pci_dev *dev)
820{
821 u16 subsystem_vendor, subsystem_device;
822
823 pci_read_config_word(dev, PCI_SUBSYSTEM_VENDOR_ID, &subsystem_vendor);
824 pci_read_config_word(dev, PCI_SUBSYSTEM_ID, &subsystem_device);
825
826 while (ids->vendor || ids->subvendor || ids->class_mask) {
827 if ((ids->vendor == PCI_ANY_ID || ids->vendor == dev->vendor) &&
828 (ids->device == PCI_ANY_ID || ids->device == dev->device) &&
829 (ids->subvendor == PCI_ANY_ID || ids->subvendor == subsystem_vendor) &&
830 (ids->subdevice == PCI_ANY_ID || ids->subdevice == subsystem_device) &&
831 !((ids->class ^ dev->_class) & ids->class_mask))
832 return ids;
833 ids++;
834 }
835 return NULL;
836}
837
838int snd_pci_dev_present(const struct pci_device_id *ids)
839{
840 while (ids->vendor || ids->subvendor) {
841 if (pci_find_device(ids->vendor, ids->subvendor, NULL))
842 return 1;
843 ids++;
844 }
845 return 0;
846}
847
848struct pci_driver_mapping {
849 struct pci_dev *dev;
850 struct pci_driver *drv;
851 unsigned long dma_mask;
852 void *driver_data;
853 u32 saved_config[16];
854};
855
856#define PCI_MAX_MAPPINGS 64
857static struct pci_driver_mapping drvmap [PCI_MAX_MAPPINGS] = { { NULL, } , };
858
859
860static struct pci_driver_mapping *get_pci_driver_mapping(struct pci_dev *dev)
861{
862 int i;
863
864 for (i = 0; i < PCI_MAX_MAPPINGS; i++)
865 if (drvmap[i].dev == dev)
866 return &drvmap[i];
867 return NULL;
868}
869
870struct pci_driver *snd_pci_compat_get_pci_driver(struct pci_dev *dev)
871{
872 struct pci_driver_mapping *map = get_pci_driver_mapping(dev);
873 if (map)
874 return map->drv;
875 return NULL;
876}
877#if 0
878void * pci_get_drvdata (struct pci_dev *dev)
879{
880 struct pci_driver_mapping *map = get_pci_driver_mapping(dev);
881 if (map)
882 return map->driver_data;
883 return NULL;
884}
885
886
887void pci_set_drvdata (struct pci_dev *dev, void *driver_data)
888{
889 struct pci_driver_mapping *map = get_pci_driver_mapping(dev);
890 if (map)
891 map->driver_data = driver_data;
892}
893#endif
894
895
896//******************************************************************************
897//******************************************************************************
898OSSRET OSS32_APMResume()
899{
900 int i;
901 struct pci_driver *driver;
902
903 dprintf(("OSS32_APMResume"));
904
905 for(i=0;i<MAX_PCI_DEVICES;i++)
906 {
907 if(pci_devices[i].devfn)
908 {
909 driver = pci_devices[i].pcidriver;
910 if(driver && driver->resume) {
911 driver->resume(&pci_devices[i]);
912 // fSuspended = FALSE;
913 }
914 }
915 }
916
917 fSuspended = FALSE;
918
919 return OSSERR_SUCCESS;
920}
921//******************************************************************************
922//******************************************************************************
923OSSRET OSS32_APMSuspend()
924{
925 int i;
926 struct pci_driver *driver;
927
928 dprintf(("OSS32_APMSuspend"));
929
930 fSuspended = TRUE;
931
932 for(i=0;i<MAX_PCI_DEVICES;i++)
933 {
934 if(pci_devices[i].devfn)
935 {
936 driver = pci_devices[i].pcidriver;
937 if(driver && driver->suspend) {
938 driver->suspend(&pci_devices[i], SNDRV_CTL_POWER_D3cold);
939 }
940 }
941 }
942
943 return OSSERR_SUCCESS;
944}
945
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