source: GPL/branches/uniaud32-2.1.x/lib32/pci.c@ 523

Last change on this file since 523 was 523, checked in by David Azarewicz, 15 years ago

flush_workqueue hack, misc code cleanups
File size: 31.1 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/core.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#ifdef ACPI
58APIRET APIENTRY ACPIFindPCIDevice(ULONG Bus, ULONG Dev, ULONG Fun, ULONG *PicIRQ, ULONG *ApicIRQ, ULONG *Hdl, char *Component);
59#endif
60
61//******************************************************************************
62#define CONFIG_CMD(dev, where) \
63 (PCI_CONFIG_ENABLE | (dev->bus->number<<16) | (dev->devfn<<8) | (where & ~3))
64//******************************************************************************
65int pci_read_config_byte(struct pci_dev *dev, int where, u8 *value)
66{
67 outl(CONFIG_CMD(dev,where), PCI_CONFIG_ADDRESS);
68 *value = inb(PCI_CONFIG_DATA + (where&3));
69 return PCIBIOS_SUCCESSFUL;
70}
71//******************************************************************************
72//******************************************************************************
73int pci_read_config_word(struct pci_dev *dev, int where, u16 *value)
74{
75 outl(CONFIG_CMD(dev,where), PCI_CONFIG_ADDRESS);
76 *value = inw(PCI_CONFIG_DATA + (where&2));
77 return PCIBIOS_SUCCESSFUL;
78}
79//******************************************************************************
80//******************************************************************************
81int pci_read_config_dword(struct pci_dev *dev, int where, u32 *value)
82{
83 outl(CONFIG_CMD(dev,where), PCI_CONFIG_ADDRESS);
84 *value = inl(PCI_CONFIG_DATA);
85 return PCIBIOS_SUCCESSFUL;
86}
87//******************************************************************************
88//******************************************************************************
89int pci_write_config_byte(struct pci_dev *dev, int where, u8 value)
90{
91 outl(CONFIG_CMD(dev,where), PCI_CONFIG_ADDRESS);
92 outb(value, PCI_CONFIG_DATA + (where&3));
93 return PCIBIOS_SUCCESSFUL;
94}
95//******************************************************************************
96//******************************************************************************
97int pci_write_config_word(struct pci_dev *dev, int where, u16 value)
98{
99 outl(CONFIG_CMD(dev,where), PCI_CONFIG_ADDRESS);
100 outw(value, PCI_CONFIG_DATA + (where&2));
101 return PCIBIOS_SUCCESSFUL;
102}
103//******************************************************************************
104//******************************************************************************
105int pci_write_config_dword(struct pci_dev *dev, int where, u32 value)
106{
107 outl(CONFIG_CMD(dev,where), PCI_CONFIG_ADDRESS);
108 outl(value, PCI_CONFIG_DATA);
109 return PCIBIOS_SUCCESSFUL;
110}
111//******************************************************************************
112//******************************************************************************
113int pcidev_prepare(struct pci_dev *dev)
114{
115 dprintf(("pcidev_prepare %x not implemented", dev));
116 return 1; //todo: correct return value??
117}
118//******************************************************************************
119//******************************************************************************
120int pcidev_activate(struct pci_dev *dev)
121{
122 dprintf(("pcidev_activate %x not implemented", dev));
123 return 1; //todo: correct return value??
124}
125//******************************************************************************
126//******************************************************************************
127int pcidev_deactivate(struct pci_dev *dev)
128{
129 dprintf(("pcidev_deactivate %x not implemented", dev));
130 return 1; //todo: correct return value??
131}
132
133
134
135//******************************************************************************
136//******************************************************************************
137#ifdef ACPI
138struct SaveIRQForSlot
139{
140 ULONG ulSlotNo;
141 BYTE LowIRQ;
142 BYTE HighIRQ;
143 BYTE Pin;
144};
145extern struct SaveIRQForSlot sISRHigh[];
146extern int SaveIRQCounter;
147#endif
148
149//Find the next matching PCI device starting with the device specified by pcidev
150static ULONG pci_query_device(const struct pci_device_id *id_table, struct pci_dev near *pcidev, ULONG ulLast)
151{
152 int resNo, addr;
153 u32 devNr, busNr, funcNr, detectedId, cfgaddrreg, temp, temp2;
154#ifdef ACPI
155 APIRET rc;
156 ULONG temp1,temp3; //PS++
157#endif
158 u8 headerType;
159
160 busNr = (ulLast >> 8) & 0x1f;
161 devNr = PCI_SLOT(ulLast);
162 funcNr = PCI_FUNC(ulLast);
163 if (ulLast) funcNr++;
164
165 cfgaddrreg = inl(PCI_CONFIG_ADDRESS);
166 for(;busNr<MAX_PCI_BUSSES;busNr++) { //BusNumber<255
167 for(;devNr<32;devNr++) {
168 for(;funcNr<8;funcNr++) {
169 headerType = 0;
170 temp = PCI_CONFIG_ENABLE | (busNr<<16) | (devNr<<11) | (funcNr<<8);
171 outl(temp, PCI_CONFIG_ADDRESS);
172 detectedId = inl(PCI_CONFIG_DATA);
173
174 if ( detectedId == 0xffffffff ) {
175 if ( funcNr == 0 ) break; /* if func 0 isn't there, the others aren't either */
176 continue;
177 }
178
179 outl(temp + PCI_CLASS_REVISION, PCI_CONFIG_ADDRESS);
180 temp2 = inl(PCI_CONFIG_DATA) >> 8; /* get class */
181
182 //dprintf(("det=%x(%x) %x need=%x%x %x", detectedId, headerType, temp2, id_table->device&0xffff, id_table->vendor, id_table->class));
183
184 if ( id_table->class ) {
185 if ( (temp2 & id_table->class_mask) != id_table->class ) continue;
186 } else {
187 if ( (id_table->device == PCI_ANY_ID) && ((temp2 >> 8) != PCI_CLASS_MULTIMEDIA_AUDIO) ) continue;
188 }
189
190 if (id_table->vendor != (detectedId & 0xffff)) continue;
191 if ( (id_table->device != PCI_ANY_ID) && (id_table->device != (detectedId >> 16)) ) continue;
192
193 outl(temp | (PCI_HEADER_TYPE & ~3), PCI_CONFIG_ADDRESS);
194 headerType = inb(PCI_CONFIG_DATA + (PCI_HEADER_TYPE & 3));
195
196 if ( (headerType & 0x7f) != PCI_HEADER_TYPE_NORMAL ) continue;
197
198 memset((void near *)pcidev, 0, sizeof(struct pci_dev));
199
200 pcidev->vendor = detectedId & 0xffff;
201 pcidev->device = detectedId >> 16;
202 pcidev->bus = &pci_busses[busNr];
203 pcidev->bus->number = busNr;
204 pcidev->devfn = PCI_DEVFN(devNr, funcNr);
205 pcidev->hdr_type = headerType & 0x7f;
206
207 pcidev->prepare = pcidev_prepare;
208 pcidev->activate = pcidev_activate;
209 pcidev->deactivate = pcidev_deactivate;
210 pcidev->active = 1;
211 pcidev->ro = 0;
212 pcidev->sibling = NULL;
213 pcidev->next = NULL;
214 pcidev->dma_mask = 0xFFFFFFFF;
215
216 // Subsystem ID
217 pci_read_config_word(pcidev, PCI_SUBSYSTEM_VENDOR_ID, &pcidev->subsystem_vendor);
218 pci_read_config_word(pcidev, PCI_SUBSYSTEM_ID, &pcidev->subsystem_device);
219
220 // I/O and MEM
221 resNo = 0;
222 for( addr = PCI_BASE_ADDRESS_0; addr <= PCI_BASE_ADDRESS_5; addr += 4 ) {
223 pci_read_config_dword(pcidev, addr, &temp);
224 if( temp != 0 && temp != 0xffffffff ) {
225 pci_write_config_dword(pcidev, addr, 0xffffffff);
226 pci_read_config_dword(pcidev, addr, &temp2);
227 pci_write_config_dword(pcidev, addr, temp);
228
229 if( temp & PCI_BASE_ADDRESS_SPACE_IO ) {
230 pcidev->resource[resNo].flags = IORESOURCE_IO | PCI_BASE_ADDRESS_SPACE_IO;
231 pcidev->resource[resNo].start = temp & PCI_BASE_ADDRESS_IO_MASK;
232 pcidev->resource[resNo].end = pcidev->resource[resNo].start +
233 ~(temp2 & PCI_BASE_ADDRESS_IO_MASK) + 1;
234 }
235 else
236 {
237 pcidev->resource[resNo].flags = IORESOURCE_MEM | IORESOURCE_MEM_WRITEABLE;
238 pcidev->resource[resNo].start = temp & PCI_BASE_ADDRESS_MEM_MASK;
239 pcidev->resource[resNo].end = pcidev->resource[resNo].start +
240 ~(temp2 & PCI_BASE_ADDRESS_MEM_MASK) + 1;
241 }
242
243 resNo++;
244
245 }
246 }
247
248 // IRQ and PIN
249 pci_read_config_dword(pcidev, PCI_INTERRUPT_LINE, &temp);
250#ifdef ACPI
251 sISRHigh[SaveIRQCounter].Pin = (temp >> 8) & 0xf;
252 temp2 = temp3 = 0;
253 rc = ACPIFindPCIDevice( (ULONG)busNr, // Bus
254 (ULONG)devNr, // Dev
255 (ULONG)(pcidev->devfn >> 8) & 7, // Function
256 &temp1, // PIC IRQ
257 &temp3, // APIC IRQ
258 NULL, // ACPI handle to finding device
259 "Uniaud32"); // Name for acpi log
260 if (!rc) {
261 // Check APIC IRQ, if we have /SMP /APIC, must be set
262 if (temp1) temp = (temp & (~0xff)) | (temp1 & 0xff);
263 // Check PIC IRQ
264 else if (temp3) temp = (temp & (~0xff)) | (temp3 & 0xff);
265 dprintf(("pci_query_device: IRQs ACPI PIC%d APIC%d", temp1, temp3));
266 sISRHigh[SaveIRQCounter].LowIRQ = temp1;
267 sISRHigh[SaveIRQCounter].HighIRQ = temp3;
268 }
269#endif /* ACPI */
270 if( (u8)temp && (u8)temp != 0xff ) {
271 pcidev->irq_resource[0].flags = IORESOURCE_IRQ;
272 pcidev->irq_resource[0].start = pcidev->irq_resource[0].end = temp & 0xffff;
273 pcidev->irq = (u8)temp;
274 }
275
276 return (0x8000 | (busNr << 8) | PCI_DEVFN(devNr, funcNr));
277 } /* for funcNr */
278 funcNr = 0;
279 } /* for devNr */
280 devNr = 0;
281 }
282 outl(cfgaddrreg, PCI_CONFIG_ADDRESS);
283 return 0;
284}
285
286//******************************************************************************
287//******************************************************************************
288// Called from:
289//if from==NULL search pci bus
290//if from!=NULL only search already found devices starting with from
291struct pci_dev *pci_find_device (unsigned int vendor, unsigned int device, struct pci_dev *from)
292{
293 int i;
294 struct pci_device_id id_table;
295
296 for(i=0;i<MAX_PCI_DEVICES;i++) {
297 if ( pci_devices[i].devfn && (pci_devices[i].vendor == vendor) && (pci_devices[i].device == device) ) return &pci_devices[i];
298 }
299
300 for(i=0;i<MAX_PCI_DEVICES;i++) {
301 if(pci_devices[i].devfn == 0) {
302 memset(&id_table, 0, sizeof(id_table));
303 id_table.vendor = vendor;
304 id_table.device = device;
305 if( pci_query_device(&id_table, (struct pci_dev near *)&pci_devices[i], 0) ) return &pci_devices[i];
306 else break;
307 }
308 }
309
310 return NULL;
311}
312//******************************************************************************
313//******************************************************************************
314struct resource * __request_region(struct resource *a, unsigned long start,
315 unsigned long n, const char *name)
316{
317 struct resource *resource;
318
319 if(a->flags & IORESOURCE_MEM) {
320 if(RMRequestMem(/*hResMgr,*/ start, n) == FALSE) {
321 printk("RMRequestIO failed for io %x, length %x\n", start, n);
322 return NULL;
323 }
324 }
325 else if(a->flags & IORESOURCE_IO) {
326 if(RMRequestIO(/*hResMgr,*/ start, n) == FALSE) {
327 printk("RMRequestIO failed for io %x, length %x\n", start, n);
328 return NULL;
329 }
330 }
331
332 resource = kmalloc(sizeof(struct resource), GFP_KERNEL);
333 if (resource == NULL)
334 return NULL;
335 resource->name = name;
336 resource->start = start;
337 resource->end = start + n; // - 1;
338 resource->flags = a->flags;
339 resource->parent =
340 resource->child = NULL;
341
342 // insert in list
343 resource->sibling = a->sibling;
344 a->sibling = resource;
345
346 return resource;
347}
348//******************************************************************************
349//******************************************************************************
350void __release_region(struct resource *a,
351 unsigned long start, unsigned long n)
352{
353 struct resource *resource;
354 struct resource **ppres = &a->sibling;
355 unsigned long end = start + n; // - 1;
356
357 while( *ppres )
358 {
359 resource = *ppres;
360
361 if( resource->start == start && resource->end == end )
362 {
363 // remove from list
364 *ppres = resource->sibling;
365 kfree(resource);
366 return;
367 }
368
369 ppres = &resource->sibling;
370 }
371}
372//******************************************************************************
373//******************************************************************************
374int pci_get_flags (struct pci_dev *dev, int n_base)
375{
376 if(n_base >= DEVICE_COUNT_RESOURCE || !dev->resource[n_base].flags) {
377 DebugInt3();
378 return 0;
379 }
380 return dev->resource[n_base].flags;
381}
382//******************************************************************************
383//******************************************************************************
384int pcibios_present(void)
385{
386 printk("pcibios_present -> pretend BIOS present\n");
387 return 1;
388}
389//******************************************************************************
390//******************************************************************************
391struct pci_dev *pci_find_slot (unsigned int bus, unsigned int devfn)
392{
393 printk("pci_find_slot %d %x not implemented!!\n", bus, devfn);
394 DebugInt3();
395 return NULL;
396}
397//******************************************************************************
398//******************************************************************************
399int pci_dma_supported(struct pci_dev *dev, unsigned long mask)
400{
401 printk("pci_dma_supported: return TRUE\n");
402 return 1;
403}
404//******************************************************************************
405//******************************************************************************
406int pci_find_capability(struct pci_dev *dev, int cap)
407{
408 u16 status;
409 u8 pos, id;
410 int ttl = 48;
411
412 pci_read_config_word(dev, PCI_STATUS, &status);
413 if (!(status & PCI_STATUS_CAP_LIST))
414 return 0;
415 pci_read_config_byte(dev, PCI_CAPABILITY_LIST, &pos);
416 while (ttl-- && pos >= 0x40) {
417 pos &= ~3;
418 pci_read_config_byte(dev, pos + PCI_CAP_LIST_ID, &id);
419 if (id == 0xff)
420 break;
421 if (id == cap)
422 return pos;
423 pci_read_config_byte(dev, pos + PCI_CAP_LIST_NEXT, &pos);
424 }
425 return 0;
426}
427//******************************************************************************
428/*
429 * Set power management state of a device. For transitions from state D3
430 * it isn't as straightforward as one could assume since many devices forget
431 * their configuration space during wakeup. Returns old power state.
432 */
433//******************************************************************************
434int pci_set_power_state(struct pci_dev *dev, int new_state)
435{
436 u32 base[5], romaddr;
437 u16 pci_command, pwr_command;
438 u8 pci_latency, pci_cacheline;
439 int i, old_state;
440 int pm = pci_find_capability(dev, PCI_CAP_ID_PM);
441
442 if (!pm)
443 return 0;
444 pci_read_config_word(dev, pm + PCI_PM_CTRL, &pwr_command);
445 old_state = pwr_command & PCI_PM_CTRL_STATE_MASK;
446 if (old_state == new_state)
447 return old_state;
448 if (old_state == 3) {
449 pci_read_config_word(dev, PCI_COMMAND, &pci_command);
450 pci_write_config_word(dev, PCI_COMMAND, pci_command & ~(PCI_COMMAND_IO | PCI_COMMAND_MEMORY));
451 for (i = 0; i < 5; i++)
452 pci_read_config_dword(dev, PCI_BASE_ADDRESS_0 + i*4, &base[i]);
453 pci_read_config_dword(dev, PCI_ROM_ADDRESS, &romaddr);
454 pci_read_config_byte(dev, PCI_LATENCY_TIMER, &pci_latency);
455 pci_read_config_byte(dev, PCI_CACHE_LINE_SIZE, &pci_cacheline);
456 pci_write_config_word(dev, pm + PCI_PM_CTRL, new_state);
457 for (i = 0; i < 5; i++)
458 pci_write_config_dword(dev, PCI_BASE_ADDRESS_0 + i*4, base[i]);
459 pci_write_config_dword(dev, PCI_ROM_ADDRESS, romaddr);
460 pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq);
461 pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, pci_cacheline);
462 pci_write_config_byte(dev, PCI_LATENCY_TIMER, pci_latency);
463 pci_write_config_word(dev, PCI_COMMAND, pci_command);
464 } else
465 pci_write_config_word(dev, pm + PCI_PM_CTRL, (pwr_command & ~PCI_PM_CTRL_STATE_MASK) | new_state);
466 return old_state;
467}
468//******************************************************************************
469/*
470 * Initialize device before it's used by a driver. Ask low-level code
471 * to enable I/O and memory. Wake up the device if it was suspended.
472 * Beware, this function can fail.
473 */
474//******************************************************************************
475int pci_enable_device(struct pci_dev *dev)
476{
477 u16 pci_command;
478
479 dprintf(("pci_enable_device %x\n", dev));
480
481 pci_read_config_word(dev, PCI_COMMAND, &pci_command);
482 pci_write_config_word(dev, PCI_COMMAND, pci_command | (PCI_COMMAND_IO | PCI_COMMAND_MEMORY));
483 pci_set_power_state(dev, 0);
484 return 0;
485}
486//******************************************************************************
487//******************************************************************************
488int pci_register_driver(struct pci_driver *driver)
489{
490 int iTableIx, iNumCards, iTmp;
491 ULONG ulLast;
492 struct pci_dev *pcidev;
493
494 if (!driver->probe) return 0;
495
496 iNumCards = 0;
497
498 /* find an empty slot */
499 for (iTmp=0; iTmp<MAX_PCI_DEVICES; iTmp++) {
500 if (pci_devices[iTmp].devfn == 0) break;
501 }
502 if (iTmp >= MAX_PCI_DEVICES) return 0;
503 pcidev = &pci_devices[iTmp];
504
505 for( iTableIx = 0; driver->id_table[iTableIx].vendor; iTableIx++) {
506 ulLast = 0;
507 while( (ulLast = pci_query_device(&driver->id_table[iTableIx], pcidev, ulLast)) ) {
508
509
510 RMInit();
511 dprintf(("pci_register_driver: found=%x:%x searching for %x:%x\n",
512 pcidev->vendor, pcidev->device, driver->id_table[iTableIx].vendor, driver->id_table[iTableIx].device));
513
514 if(driver->probe(pcidev, &driver->id_table[iTableIx]) == 0) {
515 pcidev->pcidriver = (void *)driver;
516 pcidev->current_state = 4;
517
518 // create adapter
519 RMDone((pcidev->device << 16) | pcidev->vendor);
520 iNumCards++;
521
522 /* find another empty slot */
523 for (iTmp=0; iTmp<MAX_PCI_DEVICES; iTmp++) {
524 if (pci_devices[iTmp].devfn == 0) break;
525 }
526 if (iTmp >= MAX_PCI_DEVICES) break;
527 pcidev = &pci_devices[iTmp];
528 } else pcidev->devfn = 0;
529
530 RMDone(0);
531 }
532 }
533
534 return iNumCards;
535}
536//******************************************************************************
537//******************************************************************************
538int pci_module_init(struct pci_driver *drv)
539{
540 int res = pci_register_driver(drv);
541 if (res == 0) return -ENODEV;
542 return res;
543}
544//******************************************************************************
545//******************************************************************************
546int pci_unregister_driver(struct pci_driver *driver)
547{
548 struct pci_dev *pcidev;
549 int i, j;
550
551 for (i=0; driver->id_table[i].vendor; i++) {
552 for(j=0; j<MAX_PCI_DEVICES; j++) {
553 pcidev = &pci_devices[j];
554 if (pcidev->devfn == 0) continue;
555 if(pcidev->vendor != driver->id_table[i].vendor) continue;
556 if ( (driver->id_table[i].device != PCI_ANY_ID) && (pcidev->device != driver->id_table[i].device) ) continue;
557 dprintf(("pci unreg match: %x:%x %x:%x", pci_devices[j].vendor, pci_devices[j].device, driver->id_table[i].vendor, driver->id_table[i].device));
558 if(!driver->remove) continue;
559 driver->remove(pcidev);
560 }
561 }
562 return 0;
563}
564//******************************************************************************
565//******************************************************************************
566void pci_set_master(struct pci_dev *dev)
567{
568 u16 cmd;
569
570 pci_read_config_word(dev, PCI_COMMAND, &cmd);
571 if (! (cmd & PCI_COMMAND_MASTER)) {
572 dprintf(("pci_set_master %x", dev));
573 cmd |= PCI_COMMAND_MASTER;
574 pci_write_config_word(dev, PCI_COMMAND, cmd);
575 }
576 return;
577}
578//******************************************************************************
579// * Register a device with power management
580//******************************************************************************
581struct pm_dev *pm_register(pm_dev_t type, unsigned long id, pm_callback callback)
582{
583 dprintf(("pm_register STUB"));
584 DebugInt3();
585 return NULL;
586}
587//******************************************************************************
588// * Unregister a device with power management
589//******************************************************************************
590void pm_unregister(struct pm_dev *dev)
591{
592 dprintf(("pm_unregister STUB"));
593}
594//******************************************************************************
595//******************************************************************************
596int __compat_get_order(unsigned long size)
597{
598 int order;
599
600 size = (size-1) >> (PAGE_SHIFT-1);
601 order = -1;
602 do {
603 size >>= 1;
604 order++;
605 } while (size);
606 return order;
607}
608//******************************************************************************
609//******************************************************************************
610void *pci_alloc_consistent(struct pci_dev *hwdev,
611 long size, dma_addr_t *dma_handle)
612{
613 void *ret = NULL;
614 int gfp = GFP_ATOMIC;
615 int order;
616 dprintf(("pci_alloc_consistent %d mask %x", size, (hwdev) ? hwdev->dma_mask : 0));
617 if (hwdev == NULL || hwdev->dma_mask != 0xffffffff) {
618 //try not to exhaust low memory (< 16mb) so allocate from the high region first
619 //if that doesn't satisfy the dma mask requirement, then get it from the low
620 //regino anyway
621 if(hwdev->dma_mask > 0x00ffffff) {
622 order = __compat_get_order(size);
623 ret = (void *)__get_free_pages(gfp|GFP_DMAHIGHMEM, order);
624 *dma_handle = virt_to_bus(ret);
625 if(*dma_handle > hwdev->dma_mask) {
626 free_pages((unsigned long)ret, __compat_get_order(size));
627 //be sure and allocate below 16 mb
628 gfp |= GFP_DMA;
629 ret = NULL;
630 }
631 }
632 else { //must always allocate below 16 mb
633 gfp |= GFP_DMA;
634 }
635 }
636 if(ret == NULL) {
637 ret = (void *)__get_free_pages(gfp, __compat_get_order(size));
638 }
639
640 if (ret != NULL) {
641 memset(ret, 0, size);
642 *dma_handle = virt_to_bus(ret);
643 }
644 return ret;
645}
646//******************************************************************************
647//******************************************************************************
648void pci_free_consistent(struct pci_dev *hwdev, long size,
649 void *vaddr, dma_addr_t dma_handle)
650{
651 free_pages((unsigned long)vaddr, __compat_get_order(size));
652}
653//******************************************************************************
654//******************************************************************************
655void pci_set_driver_data (struct pci_dev *dev, void *driver_data)
656{
657 if (dev)
658 dev->driver_data = driver_data;
659}
660//******************************************************************************
661//******************************************************************************
662void *pci_get_driver_data (struct pci_dev *dev)
663{
664 if (dev)
665 return dev->driver_data;
666 return 0;
667}
668//******************************************************************************
669//******************************************************************************
670unsigned long pci_get_dma_mask (struct pci_dev *dev)
671{
672 if (dev)
673 return dev->dma_mask;
674 return 0;
675}
676//******************************************************************************
677//******************************************************************************
678int release_resource(struct resource *newres)
679{
680 return 0;
681}
682
683//******************************************************************************
684//******************************************************************************
685int pci_set_latency_time(struct pci_dev *dev, int latency)
686{
687 pci_write_config_byte(dev, PCI_LATENCY_TIMER, latency);
688 return 0;
689}
690
691//******************************************************************************
692//******************************************************************************
693/**
694 * pci_save_state - save the PCI configuration space of a device before suspending
695 * @dev: - PCI device that we're dealing with
696 * @buffer: - buffer to hold config space context
697 *
698 * @buffer must be large enough to hold the entire PCI 2.2 config space
699 * (>= 64 bytes).
700 */
701int pci_orig_save_state(struct pci_dev *dev, u32 *buffer)
702{
703 int i;
704 if (buffer) {
705 /* XXX: 100% dword access ok here? */
706 for (i = 0; i < 16; i++)
707 pci_read_config_dword(dev, i * 4,&buffer[i]);
708 }
709 return 0;
710}
711
712/**
713 * pci_restore_state - Restore the saved state of a PCI device
714 * @dev: - PCI device that we're dealing with
715 * @buffer: - saved PCI config space
716 *
717 */
718int
719pci_orig_restore_state(struct pci_dev *dev, u32 *buffer)
720{
721 int i;
722
723 if (buffer) {
724 for (i = 0; i < 16; i++)
725 pci_write_config_dword(dev,i * 4, buffer[i]);
726 }
727 /*
728 * otherwise, write the context information we know from bootup.
729 * This works around a problem where warm-booting from Windows
730 * combined with a D3(hot)->D0 transition causes PCI config
731 * header data to be forgotten.
732 */
733 else {
734 for (i = 0; i < 6; i ++)
735 pci_write_config_dword(dev,
736 PCI_BASE_ADDRESS_0 + (i * 4),
737 dev->resource[i].start);
738 pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq);
739 }
740 return 0;
741}
742
743struct saved_config_tbl {
744 struct pci_dev *pci;
745 u32 config[16];
746};
747static struct saved_config_tbl saved_tbl[16];
748
749int pci_save_state(struct pci_dev *pci)
750{
751 int i;
752 /* FIXME: mutex needed for race? */
753 for (i = 0; i < ARRAY_SIZE(saved_tbl); i++) {
754 if (! saved_tbl[i].pci) {
755 saved_tbl[i].pci = pci;
756 pci_orig_save_state(pci, saved_tbl[i].config);
757 return 1;
758 }
759 }
760 printk(KERN_DEBUG "snd: no pci config space found!\n");
761 return 0;
762}
763
764int pci_restore_state(struct pci_dev *pci)
765{
766 int i;
767 /* FIXME: mutex needed for race? */
768 for (i = 0; i < ARRAY_SIZE(saved_tbl); i++) {
769 if (saved_tbl[i].pci == pci) {
770 saved_tbl[i].pci = NULL;
771 pci_orig_restore_state(pci, saved_tbl[i].config);
772 return 0;
773 }
774 }
775 printk(KERN_DEBUG "snd: no saved pci config!\n");
776 return 1;
777}
778
779void pci_disable_device(struct pci_dev *dev)
780{
781 u16 pci_command;
782
783 pci_read_config_word(dev, PCI_COMMAND, &pci_command);
784 if (pci_command & PCI_COMMAND_MASTER) {
785 pci_command &= ~PCI_COMMAND_MASTER;
786 pci_write_config_word(dev, PCI_COMMAND, pci_command);
787 }
788}
789
790int pci_request_region(struct pci_dev *pdev, int bar, char *res_name)
791{
792 int flags;
793
794 if (pci_resource_len(pdev, bar) == 0)
795 return 0;
796 flags = pci_get_flags(pdev, bar);
797 if (flags & IORESOURCE_IO) {
798 if (check_region(pci_resource_start(pdev, bar), pci_resource_len(pdev, bar)))
799 goto err_out;
800 request_region(pci_resource_start(pdev, bar),
801 pci_resource_len(pdev, bar), res_name);
802 }
803 else if (flags & IORESOURCE_MEM) {
804 if (check_mem_region(pci_resource_start(pdev, bar), pci_resource_len(pdev, bar)))
805 goto err_out;
806 request_mem_region(pci_resource_start(pdev, bar),
807 pci_resource_len(pdev, bar), res_name);
808 }
809
810 return 0;
811
812err_out:
813 printk(KERN_WARNING "PCI: Unable to reserve %s region #%d:%lx@%lx for device %s\n",
814 flags & IORESOURCE_IO ? "I/O" : "mem",
815 bar + 1, /* PCI BAR # */
816 pci_resource_len(pdev, bar), pci_resource_start(pdev, bar),
817 res_name);
818 return -EBUSY;
819}
820
821void pci_release_region(struct pci_dev *pdev, int bar)
822{
823 int flags;
824
825 if (pci_resource_len(pdev, bar) == 0)
826 return;
827 flags = pci_get_flags(pdev, bar);
828 if (flags & IORESOURCE_IO) {
829 release_region(pci_resource_start(pdev, bar),
830 pci_resource_len(pdev, bar));
831 }
832 else if (flags & IORESOURCE_MEM) {
833 release_mem_region(pci_resource_start(pdev, bar),
834 pci_resource_len(pdev, bar));
835 }
836}
837
838int pci_request_regions(struct pci_dev *pdev, char *res_name)
839{
840 int i;
841
842 for (i = 0; i < 6; i++)
843 if (pci_request_region(pdev, i, res_name))
844 goto err;
845 return 0;
846 err:
847 while (--i >= 0)
848 pci_release_region(pdev, i);
849 return -EBUSY;
850}
851
852void pci_release_regions(struct pci_dev *pdev)
853{
854 int i;
855 for (i = 0; i < 6; i++)
856 pci_release_region(pdev, i);
857}
858
859const struct pci_device_id * pci_match_device(const struct pci_device_id *ids, struct pci_dev *dev)
860{
861 u16 subsystem_vendor, subsystem_device;
862
863 pci_read_config_word(dev, PCI_SUBSYSTEM_VENDOR_ID, &subsystem_vendor);
864 pci_read_config_word(dev, PCI_SUBSYSTEM_ID, &subsystem_device);
865
866 while (ids->vendor || ids->subvendor || ids->class_mask) {
867 if ((ids->vendor == PCI_ANY_ID || ids->vendor == dev->vendor) &&
868 (ids->device == PCI_ANY_ID || ids->device == dev->device) &&
869 (ids->subvendor == PCI_ANY_ID || ids->subvendor == subsystem_vendor) &&
870 (ids->subdevice == PCI_ANY_ID || ids->subdevice == subsystem_device) &&
871 !((ids->class ^ dev->_class) & ids->class_mask))
872 return ids;
873 ids++;
874 }
875 return NULL;
876}
877
878int snd_pci_dev_present(const struct pci_device_id *ids)
879{
880 while (ids->vendor || ids->subvendor) {
881 if (pci_find_device(ids->vendor, ids->subvendor, NULL))
882 return 1;
883 ids++;
884 }
885 return 0;
886}
887
888struct pci_driver_mapping {
889 struct pci_dev *dev;
890 struct pci_driver *drv;
891 unsigned long dma_mask;
892 void *driver_data;
893 u32 saved_config[16];
894};
895
896#define PCI_MAX_MAPPINGS 64
897static struct pci_driver_mapping drvmap [PCI_MAX_MAPPINGS] = { { NULL, } , };
898
899
900static struct pci_driver_mapping *get_pci_driver_mapping(struct pci_dev *dev)
901{
902 int i;
903
904 for (i = 0; i < PCI_MAX_MAPPINGS; i++)
905 if (drvmap[i].dev == dev)
906 return &drvmap[i];
907 return NULL;
908}
909
910struct pci_driver *snd_pci_compat_get_pci_driver(struct pci_dev *dev)
911{
912 struct pci_driver_mapping *map = get_pci_driver_mapping(dev);
913 if (map)
914 return map->drv;
915 return NULL;
916}
917#if 0
918void * pci_get_drvdata (struct pci_dev *dev)
919{
920 struct pci_driver_mapping *map = get_pci_driver_mapping(dev);
921 if (map)
922 return map->driver_data;
923 return NULL;
924}
925
926
927void pci_set_drvdata (struct pci_dev *dev, void *driver_data)
928{
929 struct pci_driver_mapping *map = get_pci_driver_mapping(dev);
930 if (map)
931 map->driver_data = driver_data;
932}
933#endif
934
935
936//******************************************************************************
937//******************************************************************************
938OSSRET OSS32_APMResume()
939{
940 int i;
941 struct pci_driver *driver;
942
943 dprintf(("OSS32_APMResume"));
944
945 fSuspended = FALSE;
946
947 for(i=0;i<MAX_PCI_DEVICES;i++)
948 {
949 if(pci_devices[i].devfn)
950 {
951 driver = pci_devices[i].pcidriver;
952 if(driver && driver->resume) {
953 driver->resume(&pci_devices[i]);
954 }
955 }
956 }
957
958 return OSSERR_SUCCESS;
959}
960//******************************************************************************
961//******************************************************************************
962OSSRET OSS32_APMSuspend()
963{
964 int i;
965 struct pci_driver *driver;
966
967 dprintf(("OSS32_APMSuspend 1"));
968
969 fSuspended = TRUE;
970
971 for(i=0;i<MAX_PCI_DEVICES;i++)
972 {
973 if(pci_devices[i].devfn)
974 {
975 driver = pci_devices[i].pcidriver;
976 if(driver && driver->suspend) {
977 driver->suspend(&pci_devices[i], SNDRV_CTL_POWER_D3cold);
978 }
979 }
980 }
981
982 dprintf(("OSS32_APMSuspend 2"));
983 return OSSERR_SUCCESS;
984}
985
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