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11#include <linux/export.h>
12#include <linux/kernel.h>
13#include <linux/string.h>
14#include <linux/sched.h>
15#include <linux/capability.h>
16#include <linux/errno.h>
17#include <linux/pci.h>
18#include <linux/msi.h>
19#include <linux/irq.h>
20#include <linux/init.h>
21#include <linux/of.h>
22#include <linux/of_device.h>
23
24#include <asm/uaccess.h>
25#include <asm/pgtable.h>
26#include <asm/irq.h>
27#include <asm/prom.h>
28#include <asm/apb.h>
29
30#include "pci_impl.h"
31#include "kernel.h"
32
33
34struct pci_pbm_info *pci_pbm_root = NULL;
35
36
37int pci_num_pbms = 0;
38
39volatile int pci_poke_in_progress;
40volatile int pci_poke_cpu = -1;
41volatile int pci_poke_faulted;
42
43static DEFINE_SPINLOCK(pci_poke_lock);
44
45void pci_config_read8(u8 *addr, u8 *ret)
46{
47 unsigned long flags;
48 u8 byte;
49
50 spin_lock_irqsave(&pci_poke_lock, flags);
51 pci_poke_cpu = smp_processor_id();
52 pci_poke_in_progress = 1;
53 pci_poke_faulted = 0;
54 __asm__ __volatile__("membar #Sync\n\t"
55 "lduba [%1] %2, %0\n\t"
56 "membar #Sync"
57 : "=r" (byte)
58 : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
59 : "memory");
60 pci_poke_in_progress = 0;
61 pci_poke_cpu = -1;
62 if (!pci_poke_faulted)
63 *ret = byte;
64 spin_unlock_irqrestore(&pci_poke_lock, flags);
65}
66
67void pci_config_read16(u16 *addr, u16 *ret)
68{
69 unsigned long flags;
70 u16 word;
71
72 spin_lock_irqsave(&pci_poke_lock, flags);
73 pci_poke_cpu = smp_processor_id();
74 pci_poke_in_progress = 1;
75 pci_poke_faulted = 0;
76 __asm__ __volatile__("membar #Sync\n\t"
77 "lduha [%1] %2, %0\n\t"
78 "membar #Sync"
79 : "=r" (word)
80 : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
81 : "memory");
82 pci_poke_in_progress = 0;
83 pci_poke_cpu = -1;
84 if (!pci_poke_faulted)
85 *ret = word;
86 spin_unlock_irqrestore(&pci_poke_lock, flags);
87}
88
89void pci_config_read32(u32 *addr, u32 *ret)
90{
91 unsigned long flags;
92 u32 dword;
93
94 spin_lock_irqsave(&pci_poke_lock, flags);
95 pci_poke_cpu = smp_processor_id();
96 pci_poke_in_progress = 1;
97 pci_poke_faulted = 0;
98 __asm__ __volatile__("membar #Sync\n\t"
99 "lduwa [%1] %2, %0\n\t"
100 "membar #Sync"
101 : "=r" (dword)
102 : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
103 : "memory");
104 pci_poke_in_progress = 0;
105 pci_poke_cpu = -1;
106 if (!pci_poke_faulted)
107 *ret = dword;
108 spin_unlock_irqrestore(&pci_poke_lock, flags);
109}
110
111void pci_config_write8(u8 *addr, u8 val)
112{
113 unsigned long flags;
114
115 spin_lock_irqsave(&pci_poke_lock, flags);
116 pci_poke_cpu = smp_processor_id();
117 pci_poke_in_progress = 1;
118 pci_poke_faulted = 0;
119 __asm__ __volatile__("membar #Sync\n\t"
120 "stba %0, [%1] %2\n\t"
121 "membar #Sync"
122 :
123 : "r" (val), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
124 : "memory");
125 pci_poke_in_progress = 0;
126 pci_poke_cpu = -1;
127 spin_unlock_irqrestore(&pci_poke_lock, flags);
128}
129
130void pci_config_write16(u16 *addr, u16 val)
131{
132 unsigned long flags;
133
134 spin_lock_irqsave(&pci_poke_lock, flags);
135 pci_poke_cpu = smp_processor_id();
136 pci_poke_in_progress = 1;
137 pci_poke_faulted = 0;
138 __asm__ __volatile__("membar #Sync\n\t"
139 "stha %0, [%1] %2\n\t"
140 "membar #Sync"
141 :
142 : "r" (val), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
143 : "memory");
144 pci_poke_in_progress = 0;
145 pci_poke_cpu = -1;
146 spin_unlock_irqrestore(&pci_poke_lock, flags);
147}
148
149void pci_config_write32(u32 *addr, u32 val)
150{
151 unsigned long flags;
152
153 spin_lock_irqsave(&pci_poke_lock, flags);
154 pci_poke_cpu = smp_processor_id();
155 pci_poke_in_progress = 1;
156 pci_poke_faulted = 0;
157 __asm__ __volatile__("membar #Sync\n\t"
158 "stwa %0, [%1] %2\n\t"
159 "membar #Sync"
160 :
161 : "r" (val), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
162 : "memory");
163 pci_poke_in_progress = 0;
164 pci_poke_cpu = -1;
165 spin_unlock_irqrestore(&pci_poke_lock, flags);
166}
167
168static int ofpci_verbose;
169
170static int __init ofpci_debug(char *str)
171{
172 int val = 0;
173
174 get_option(&str, &val);
175 if (val)
176 ofpci_verbose = 1;
177 return 1;
178}
179
180__setup("ofpci_debug=", ofpci_debug);
181
182static unsigned long pci_parse_of_flags(u32 addr0)
183{
184 unsigned long flags = 0;
185
186 if (addr0 & 0x02000000) {
187 flags = IORESOURCE_MEM | PCI_BASE_ADDRESS_SPACE_MEMORY;
188 flags |= (addr0 >> 22) & PCI_BASE_ADDRESS_MEM_TYPE_64;
189 flags |= (addr0 >> 28) & PCI_BASE_ADDRESS_MEM_TYPE_1M;
190 if (addr0 & 0x40000000)
191 flags |= IORESOURCE_PREFETCH
192 | PCI_BASE_ADDRESS_MEM_PREFETCH;
193 } else if (addr0 & 0x01000000)
194 flags = IORESOURCE_IO | PCI_BASE_ADDRESS_SPACE_IO;
195 return flags;
196}
197
198
199
200
201
202static void pci_parse_of_addrs(struct platform_device *op,
203 struct device_node *node,
204 struct pci_dev *dev)
205{
206 struct resource *op_res;
207 const u32 *addrs;
208 int proplen;
209
210 addrs = of_get_property(node, "assigned-addresses", &proplen);
211 if (!addrs)
212 return;
213 if (ofpci_verbose)
214 printk(" parse addresses (%d bytes) @ %p\n",
215 proplen, addrs);
216 op_res = &op->resource[0];
217 for (; proplen >= 20; proplen -= 20, addrs += 5, op_res++) {
218 struct resource *res;
219 unsigned long flags;
220 int i;
221
222 flags = pci_parse_of_flags(addrs[0]);
223 if (!flags)
224 continue;
225 i = addrs[0] & 0xff;
226 if (ofpci_verbose)
227 printk(" start: %llx, end: %llx, i: %x\n",
228 op_res->start, op_res->end, i);
229
230 if (PCI_BASE_ADDRESS_0 <= i && i <= PCI_BASE_ADDRESS_5) {
231 res = &dev->resource[(i - PCI_BASE_ADDRESS_0) >> 2];
232 } else if (i == dev->rom_base_reg) {
233 res = &dev->resource[PCI_ROM_RESOURCE];
234 flags |= IORESOURCE_READONLY | IORESOURCE_CACHEABLE
235 | IORESOURCE_SIZEALIGN;
236 } else {
237 printk(KERN_ERR "PCI: bad cfg reg num 0x%x\n", i);
238 continue;
239 }
240 res->start = op_res->start;
241 res->end = op_res->end;
242 res->flags = flags;
243 res->name = pci_name(dev);
244 }
245}
246
247static struct pci_dev *of_create_pci_dev(struct pci_pbm_info *pbm,
248 struct device_node *node,
249 struct pci_bus *bus, int devfn)
250{
251 struct dev_archdata *sd;
252 struct pci_slot *slot;
253 struct platform_device *op;
254 struct pci_dev *dev;
255 const char *type;
256 u32 class;
257
258 dev = pci_alloc_dev(bus);
259 if (!dev)
260 return NULL;
261
262 sd = &dev->dev.archdata;
263 sd->iommu = pbm->iommu;
264 sd->stc = &pbm->stc;
265 sd->host_controller = pbm;
266 sd->op = op = of_find_device_by_node(node);
267 sd->numa_node = pbm->numa_node;
268
269 sd = &op->dev.archdata;
270 sd->iommu = pbm->iommu;
271 sd->stc = &pbm->stc;
272 sd->numa_node = pbm->numa_node;
273
274 if (!strcmp(node->name, "ebus"))
275 of_propagate_archdata(op);
276
277 type = of_get_property(node, "device_type", NULL);
278 if (type == NULL)
279 type = "";
280
281 if (ofpci_verbose)
282 printk(" create device, devfn: %x, type: %s\n",
283 devfn, type);
284
285 dev->sysdata = node;
286 dev->dev.parent = bus->bridge;
287 dev->dev.bus = &pci_bus_type;
288 dev->dev.of_node = of_node_get(node);
289 dev->devfn = devfn;
290 dev->multifunction = 0;
291 set_pcie_port_type(dev);
292
293 list_for_each_entry(slot, &dev->bus->slots, list)
294 if (PCI_SLOT(dev->devfn) == slot->number)
295 dev->slot = slot;
296
297 dev->vendor = of_getintprop_default(node, "vendor-id", 0xffff);
298 dev->device = of_getintprop_default(node, "device-id", 0xffff);
299 dev->subsystem_vendor =
300 of_getintprop_default(node, "subsystem-vendor-id", 0);
301 dev->subsystem_device =
302 of_getintprop_default(node, "subsystem-id", 0);
303
304 dev->cfg_size = pci_cfg_space_size(dev);
305
306
307
308
309
310
311
312 pci_read_config_dword(dev, PCI_CLASS_REVISION, &class);
313 dev->class = class >> 8;
314 dev->revision = class & 0xff;
315
316 dev_set_name(&dev->dev, "%04x:%02x:%02x.%d", pci_domain_nr(bus),
317 dev->bus->number, PCI_SLOT(devfn), PCI_FUNC(devfn));
318
319 if (ofpci_verbose)
320 printk(" class: 0x%x device name: %s\n",
321 dev->class, pci_name(dev));
322
323
324
325
326
327 if ((dev->class >> 8) == PCI_CLASS_STORAGE_IDE)
328 pci_set_master(dev);
329
330 dev->current_state = PCI_UNKNOWN;
331 dev->error_state = pci_channel_io_normal;
332 dev->dma_mask = 0xffffffff;
333
334 if (!strcmp(node->name, "pci")) {
335
336 dev->hdr_type = PCI_HEADER_TYPE_BRIDGE;
337 dev->rom_base_reg = PCI_ROM_ADDRESS1;
338 } else if (!strcmp(type, "cardbus")) {
339 dev->hdr_type = PCI_HEADER_TYPE_CARDBUS;
340 } else {
341 dev->hdr_type = PCI_HEADER_TYPE_NORMAL;
342 dev->rom_base_reg = PCI_ROM_ADDRESS;
343
344 dev->irq = sd->op->archdata.irqs[0];
345 if (dev->irq == 0xffffffff)
346 dev->irq = PCI_IRQ_NONE;
347 }
348
349 pci_parse_of_addrs(sd->op, node, dev);
350
351 if (ofpci_verbose)
352 printk(" adding to system ...\n");
353
354 pci_device_add(dev, bus);
355
356 return dev;
357}
358
359static void apb_calc_first_last(u8 map, u32 *first_p, u32 *last_p)
360{
361 u32 idx, first, last;
362
363 first = 8;
364 last = 0;
365 for (idx = 0; idx < 8; idx++) {
366 if ((map & (1 << idx)) != 0) {
367 if (first > idx)
368 first = idx;
369 if (last < idx)
370 last = idx;
371 }
372 }
373
374 *first_p = first;
375 *last_p = last;
376}
377
378
379
380
381static void apb_fake_ranges(struct pci_dev *dev,
382 struct pci_bus *bus,
383 struct pci_pbm_info *pbm)
384{
385 struct pci_bus_region region;
386 struct resource *res;
387 u32 first, last;
388 u8 map;
389
390 pci_read_config_byte(dev, APB_IO_ADDRESS_MAP, &map);
391 apb_calc_first_last(map, &first, &last);
392 res = bus->resource[0];
393 res->flags = IORESOURCE_IO;
394 region.start = (first << 21);
395 region.end = (last << 21) + ((1 << 21) - 1);
396 pcibios_bus_to_resource(dev->bus, res, ®ion);
397
398 pci_read_config_byte(dev, APB_MEM_ADDRESS_MAP, &map);
399 apb_calc_first_last(map, &first, &last);
400 res = bus->resource[1];
401 res->flags = IORESOURCE_MEM;
402 region.start = (first << 29);
403 region.end = (last << 29) + ((1 << 29) - 1);
404 pcibios_bus_to_resource(dev->bus, res, ®ion);
405}
406
407static void pci_of_scan_bus(struct pci_pbm_info *pbm,
408 struct device_node *node,
409 struct pci_bus *bus);
410
411#define GET_64BIT(prop, i) ((((u64) (prop)[(i)]) << 32) | (prop)[(i)+1])
412
413static void of_scan_pci_bridge(struct pci_pbm_info *pbm,
414 struct device_node *node,
415 struct pci_dev *dev)
416{
417 struct pci_bus *bus;
418 const u32 *busrange, *ranges;
419 int len, i, simba;
420 struct pci_bus_region region;
421 struct resource *res;
422 unsigned int flags;
423 u64 size;
424
425 if (ofpci_verbose)
426 printk("of_scan_pci_bridge(%s)\n", node->full_name);
427
428
429 busrange = of_get_property(node, "bus-range", &len);
430 if (busrange == NULL || len != 8) {
431 printk(KERN_DEBUG "Can't get bus-range for PCI-PCI bridge %s\n",
432 node->full_name);
433 return;
434 }
435 ranges = of_get_property(node, "ranges", &len);
436 simba = 0;
437 if (ranges == NULL) {
438 const char *model = of_get_property(node, "model", NULL);
439 if (model && !strcmp(model, "SUNW,simba"))
440 simba = 1;
441 }
442
443 bus = pci_add_new_bus(dev->bus, dev, busrange[0]);
444 if (!bus) {
445 printk(KERN_ERR "Failed to create pci bus for %s\n",
446 node->full_name);
447 return;
448 }
449
450 bus->primary = dev->bus->number;
451 pci_bus_insert_busn_res(bus, busrange[0], busrange[1]);
452 bus->bridge_ctl = 0;
453
454
455
456 res = &dev->resource[PCI_BRIDGE_RESOURCES];
457 for (i = 0; i < PCI_NUM_RESOURCES - PCI_BRIDGE_RESOURCES; ++i) {
458 res->flags = 0;
459 bus->resource[i] = res;
460 ++res;
461 }
462 if (simba) {
463 apb_fake_ranges(dev, bus, pbm);
464 goto after_ranges;
465 } else if (ranges == NULL) {
466 pci_read_bridge_bases(bus);
467 goto after_ranges;
468 }
469 i = 1;
470 for (; len >= 32; len -= 32, ranges += 8) {
471 flags = pci_parse_of_flags(ranges[0]);
472 size = GET_64BIT(ranges, 6);
473 if (flags == 0 || size == 0)
474 continue;
475 if (flags & IORESOURCE_IO) {
476 res = bus->resource[0];
477 if (res->flags) {
478 printk(KERN_ERR "PCI: ignoring extra I/O range"
479 " for bridge %s\n", node->full_name);
480 continue;
481 }
482 } else {
483 if (i >= PCI_NUM_RESOURCES - PCI_BRIDGE_RESOURCES) {
484 printk(KERN_ERR "PCI: too many memory ranges"
485 " for bridge %s\n", node->full_name);
486 continue;
487 }
488 res = bus->resource[i];
489 ++i;
490 }
491
492 res->flags = flags;
493 region.start = GET_64BIT(ranges, 1);
494 region.end = region.start + size - 1;
495 pcibios_bus_to_resource(dev->bus, res, ®ion);
496 }
497after_ranges:
498 sprintf(bus->name, "PCI Bus %04x:%02x", pci_domain_nr(bus),
499 bus->number);
500 if (ofpci_verbose)
501 printk(" bus name: %s\n", bus->name);
502
503 pci_of_scan_bus(pbm, node, bus);
504}
505
506static void pci_of_scan_bus(struct pci_pbm_info *pbm,
507 struct device_node *node,
508 struct pci_bus *bus)
509{
510 struct device_node *child;
511 const u32 *reg;
512 int reglen, devfn, prev_devfn;
513 struct pci_dev *dev;
514
515 if (ofpci_verbose)
516 printk("PCI: scan_bus[%s] bus no %d\n",
517 node->full_name, bus->number);
518
519 child = NULL;
520 prev_devfn = -1;
521 while ((child = of_get_next_child(node, child)) != NULL) {
522 if (ofpci_verbose)
523 printk(" * %s\n", child->full_name);
524 reg = of_get_property(child, "reg", ®len);
525 if (reg == NULL || reglen < 20)
526 continue;
527
528 devfn = (reg[0] >> 8) & 0xff;
529
530
531
532
533
534
535 if (devfn == prev_devfn)
536 continue;
537 prev_devfn = devfn;
538
539
540 dev = of_create_pci_dev(pbm, child, bus, devfn);
541 if (!dev)
542 continue;
543 if (ofpci_verbose)
544 printk("PCI: dev header type: %x\n",
545 dev->hdr_type);
546
547 if (pci_is_bridge(dev))
548 of_scan_pci_bridge(pbm, child, dev);
549 }
550}
551
552static ssize_t
553show_pciobppath_attr(struct device * dev, struct device_attribute * attr, char * buf)
554{
555 struct pci_dev *pdev;
556 struct device_node *dp;
557
558 pdev = to_pci_dev(dev);
559 dp = pdev->dev.of_node;
560
561 return snprintf (buf, PAGE_SIZE, "%s\n", dp->full_name);
562}
563
564static DEVICE_ATTR(obppath, S_IRUSR | S_IRGRP | S_IROTH, show_pciobppath_attr, NULL);
565
566static void pci_bus_register_of_sysfs(struct pci_bus *bus)
567{
568 struct pci_dev *dev;
569 struct pci_bus *child_bus;
570 int err;
571
572 list_for_each_entry(dev, &bus->devices, bus_list) {
573
574
575
576
577
578
579
580 err = sysfs_create_file(&dev->dev.kobj, &dev_attr_obppath.attr);
581 (void) err;
582 }
583 list_for_each_entry(child_bus, &bus->children, node)
584 pci_bus_register_of_sysfs(child_bus);
585}
586
587struct pci_bus *pci_scan_one_pbm(struct pci_pbm_info *pbm,
588 struct device *parent)
589{
590 LIST_HEAD(resources);
591 struct device_node *node = pbm->op->dev.of_node;
592 struct pci_bus *bus;
593
594 printk("PCI: Scanning PBM %s\n", node->full_name);
595
596 pci_add_resource_offset(&resources, &pbm->io_space,
597 pbm->io_space.start);
598 pci_add_resource_offset(&resources, &pbm->mem_space,
599 pbm->mem_space.start);
600 pbm->busn.start = pbm->pci_first_busno;
601 pbm->busn.end = pbm->pci_last_busno;
602 pbm->busn.flags = IORESOURCE_BUS;
603 pci_add_resource(&resources, &pbm->busn);
604 bus = pci_create_root_bus(parent, pbm->pci_first_busno, pbm->pci_ops,
605 pbm, &resources);
606 if (!bus) {
607 printk(KERN_ERR "Failed to create bus for %s\n",
608 node->full_name);
609 pci_free_resource_list(&resources);
610 return NULL;
611 }
612
613 pci_of_scan_bus(pbm, node, bus);
614 pci_bus_add_devices(bus);
615 pci_bus_register_of_sysfs(bus);
616
617 return bus;
618}
619
620void pcibios_fixup_bus(struct pci_bus *pbus)
621{
622}
623
624resource_size_t pcibios_align_resource(void *data, const struct resource *res,
625 resource_size_t size, resource_size_t align)
626{
627 return res->start;
628}
629
630int pcibios_enable_device(struct pci_dev *dev, int mask)
631{
632 u16 cmd, oldcmd;
633 int i;
634
635 pci_read_config_word(dev, PCI_COMMAND, &cmd);
636 oldcmd = cmd;
637
638 for (i = 0; i < PCI_NUM_RESOURCES; i++) {
639 struct resource *res = &dev->resource[i];
640
641
642 if (!(mask & (1<<i)))
643 continue;
644
645 if (res->flags & IORESOURCE_IO)
646 cmd |= PCI_COMMAND_IO;
647 if (res->flags & IORESOURCE_MEM)
648 cmd |= PCI_COMMAND_MEMORY;
649 }
650
651 if (cmd != oldcmd) {
652 printk(KERN_DEBUG "PCI: Enabling device: (%s), cmd %x\n",
653 pci_name(dev), cmd);
654
655 pci_write_config_word(dev, PCI_COMMAND, cmd);
656 }
657 return 0;
658}
659
660
661
662
663
664
665
666
667
668
669static int __pci_mmap_make_offset_bus(struct pci_dev *pdev, struct vm_area_struct *vma,
670 enum pci_mmap_state mmap_state)
671{
672 struct pci_pbm_info *pbm = pdev->dev.archdata.host_controller;
673 unsigned long space_size, user_offset, user_size;
674
675 if (mmap_state == pci_mmap_io) {
676 space_size = resource_size(&pbm->io_space);
677 } else {
678 space_size = resource_size(&pbm->mem_space);
679 }
680
681
682 user_offset = vma->vm_pgoff << PAGE_SHIFT;
683 user_size = vma->vm_end - vma->vm_start;
684
685 if (user_offset >= space_size ||
686 (user_offset + user_size) > space_size)
687 return -EINVAL;
688
689 if (mmap_state == pci_mmap_io) {
690 vma->vm_pgoff = (pbm->io_space.start +
691 user_offset) >> PAGE_SHIFT;
692 } else {
693 vma->vm_pgoff = (pbm->mem_space.start +
694 user_offset) >> PAGE_SHIFT;
695 }
696
697 return 0;
698}
699
700
701
702
703
704
705
706
707
708
709
710static int __pci_mmap_make_offset(struct pci_dev *pdev,
711 struct vm_area_struct *vma,
712 enum pci_mmap_state mmap_state)
713{
714 unsigned long user_paddr, user_size;
715 int i, err;
716
717
718
719
720
721 err = __pci_mmap_make_offset_bus(pdev, vma, mmap_state);
722 if (err)
723 return err;
724
725
726
727
728 if ((pdev->class >> 8) == PCI_CLASS_BRIDGE_HOST)
729 return err;
730
731
732
733
734 user_paddr = vma->vm_pgoff << PAGE_SHIFT;
735 user_size = vma->vm_end - vma->vm_start;
736
737 for (i = 0; i <= PCI_ROM_RESOURCE; i++) {
738 struct resource *rp = &pdev->resource[i];
739 resource_size_t aligned_end;
740
741
742 if (!rp->flags)
743 continue;
744
745
746 if (i == PCI_ROM_RESOURCE) {
747 if (mmap_state != pci_mmap_mem)
748 continue;
749 } else {
750 if ((mmap_state == pci_mmap_io &&
751 (rp->flags & IORESOURCE_IO) == 0) ||
752 (mmap_state == pci_mmap_mem &&
753 (rp->flags & IORESOURCE_MEM) == 0))
754 continue;
755 }
756
757
758
759
760
761
762 aligned_end = (rp->end + PAGE_SIZE) & PAGE_MASK;
763
764 if ((rp->start <= user_paddr) &&
765 (user_paddr + user_size) <= aligned_end)
766 break;
767 }
768
769 if (i > PCI_ROM_RESOURCE)
770 return -EINVAL;
771
772 return 0;
773}
774
775
776
777
778static void __pci_mmap_set_pgprot(struct pci_dev *dev, struct vm_area_struct *vma,
779 enum pci_mmap_state mmap_state)
780{
781
782}
783
784
785
786
787
788
789
790
791
792int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
793 enum pci_mmap_state mmap_state,
794 int write_combine)
795{
796 int ret;
797
798 ret = __pci_mmap_make_offset(dev, vma, mmap_state);
799 if (ret < 0)
800 return ret;
801
802 __pci_mmap_set_pgprot(dev, vma, mmap_state);
803
804 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
805 ret = io_remap_pfn_range(vma, vma->vm_start,
806 vma->vm_pgoff,
807 vma->vm_end - vma->vm_start,
808 vma->vm_page_prot);
809 if (ret)
810 return ret;
811
812 return 0;
813}
814
815#ifdef CONFIG_NUMA
816int pcibus_to_node(struct pci_bus *pbus)
817{
818 struct pci_pbm_info *pbm = pbus->sysdata;
819
820 return pbm->numa_node;
821}
822EXPORT_SYMBOL(pcibus_to_node);
823#endif
824
825
826
827int pci_domain_nr(struct pci_bus *pbus)
828{
829 struct pci_pbm_info *pbm = pbus->sysdata;
830 int ret;
831
832 if (!pbm) {
833 ret = -ENXIO;
834 } else {
835 ret = pbm->index;
836 }
837
838 return ret;
839}
840EXPORT_SYMBOL(pci_domain_nr);
841
842#ifdef CONFIG_PCI_MSI
843int arch_setup_msi_irq(struct pci_dev *pdev, struct msi_desc *desc)
844{
845 struct pci_pbm_info *pbm = pdev->dev.archdata.host_controller;
846 unsigned int irq;
847
848 if (!pbm->setup_msi_irq)
849 return -EINVAL;
850
851 return pbm->setup_msi_irq(&irq, pdev, desc);
852}
853
854void arch_teardown_msi_irq(unsigned int irq)
855{
856 struct msi_desc *entry = irq_get_msi_desc(irq);
857 struct pci_dev *pdev = entry->dev;
858 struct pci_pbm_info *pbm = pdev->dev.archdata.host_controller;
859
860 if (pbm->teardown_msi_irq)
861 pbm->teardown_msi_irq(irq, pdev);
862}
863#endif
864
865static void ali_sound_dma_hack(struct pci_dev *pdev, int set_bit)
866{
867 struct pci_dev *ali_isa_bridge;
868 u8 val;
869
870
871
872
873 ali_isa_bridge = pci_get_device(PCI_VENDOR_ID_AL,
874 PCI_DEVICE_ID_AL_M1533,
875 NULL);
876
877 pci_read_config_byte(ali_isa_bridge, 0x7e, &val);
878 if (set_bit)
879 val |= 0x01;
880 else
881 val &= ~0x01;
882 pci_write_config_byte(ali_isa_bridge, 0x7e, val);
883 pci_dev_put(ali_isa_bridge);
884}
885
886int pci64_dma_supported(struct pci_dev *pdev, u64 device_mask)
887{
888 u64 dma_addr_mask;
889
890 if (pdev == NULL) {
891 dma_addr_mask = 0xffffffff;
892 } else {
893 struct iommu *iommu = pdev->dev.archdata.iommu;
894
895 dma_addr_mask = iommu->dma_addr_mask;
896
897 if (pdev->vendor == PCI_VENDOR_ID_AL &&
898 pdev->device == PCI_DEVICE_ID_AL_M5451 &&
899 device_mask == 0x7fffffff) {
900 ali_sound_dma_hack(pdev,
901 (dma_addr_mask & 0x80000000) != 0);
902 return 1;
903 }
904 }
905
906 if (device_mask >= (1UL << 32UL))
907 return 0;
908
909 return (device_mask & dma_addr_mask) == dma_addr_mask;
910}
911
912void pci_resource_to_user(const struct pci_dev *pdev, int bar,
913 const struct resource *rp, resource_size_t *start,
914 resource_size_t *end)
915{
916 struct pci_pbm_info *pbm = pdev->dev.archdata.host_controller;
917 unsigned long offset;
918
919 if (rp->flags & IORESOURCE_IO)
920 offset = pbm->io_space.start;
921 else
922 offset = pbm->mem_space.start;
923
924 *start = rp->start - offset;
925 *end = rp->end - offset;
926}
927
928void pcibios_set_master(struct pci_dev *dev)
929{
930
931}
932
933static int __init pcibios_init(void)
934{
935 pci_dfl_cache_line_size = 64 >> 2;
936 return 0;
937}
938subsys_initcall(pcibios_init);
939
940#ifdef CONFIG_SYSFS
941static void pci_bus_slot_names(struct device_node *node, struct pci_bus *bus)
942{
943 const struct pci_slot_names {
944 u32 slot_mask;
945 char names[0];
946 } *prop;
947 const char *sp;
948 int len, i;
949 u32 mask;
950
951 prop = of_get_property(node, "slot-names", &len);
952 if (!prop)
953 return;
954
955 mask = prop->slot_mask;
956 sp = prop->names;
957
958 if (ofpci_verbose)
959 printk("PCI: Making slots for [%s] mask[0x%02x]\n",
960 node->full_name, mask);
961
962 i = 0;
963 while (mask) {
964 struct pci_slot *pci_slot;
965 u32 this_bit = 1 << i;
966
967 if (!(mask & this_bit)) {
968 i++;
969 continue;
970 }
971
972 if (ofpci_verbose)
973 printk("PCI: Making slot [%s]\n", sp);
974
975 pci_slot = pci_create_slot(bus, i, sp, NULL);
976 if (IS_ERR(pci_slot))
977 printk(KERN_ERR "PCI: pci_create_slot returned %ld\n",
978 PTR_ERR(pci_slot));
979
980 sp += strlen(sp) + 1;
981 mask &= ~this_bit;
982 i++;
983 }
984}
985
986static int __init of_pci_slot_init(void)
987{
988 struct pci_bus *pbus = NULL;
989
990 while ((pbus = pci_find_next_bus(pbus)) != NULL) {
991 struct device_node *node;
992
993 if (pbus->self) {
994
995 node = pbus->self->dev.of_node;
996 } else {
997 struct pci_pbm_info *pbm = pbus->sysdata;
998
999
1000 node = pbm->op->dev.of_node;
1001 }
1002
1003 pci_bus_slot_names(node, pbus);
1004 }
1005
1006 return 0;
1007}
1008device_initcall(of_pci_slot_init);
1009#endif
1010