aboutsummaryrefslogtreecommitdiffstats
path: root/arch/sparc/kernel/pci.c
diff options
context:
space:
mode:
authorKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>2012-09-05 10:22:45 -0400
committerKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>2012-09-05 10:22:45 -0400
commit593d0a3e9f813db910dc50574532914db21d09ff (patch)
tree12d8413ee57b4383ca8c906996ffe02be6d377a5 /arch/sparc/kernel/pci.c
parent50e900417b8096939d12a46848f965e27a905e36 (diff)
parent4cb38750d49010ae72e718d46605ac9ba5a851b4 (diff)
Merge commit '4cb38750d49010ae72e718d46605ac9ba5a851b4' into stable/for-linus-3.6
* commit '4cb38750d49010ae72e718d46605ac9ba5a851b4': (6849 commits) bcma: fix invalid PMU chip control masks [libata] pata_cmd64x: whitespace cleanup libata-acpi: fix up for acpi_pm_device_sleep_state API sata_dwc_460ex: device tree may specify dma_channel ahci, trivial: fixed coding style issues related to braces ahci_platform: add hibernation callbacks libata-eh.c: local functions should not be exposed globally libata-transport.c: local functions should not be exposed globally sata_dwc_460ex: support hardreset ata: use module_pci_driver drivers/ata/pata_pcmcia.c: adjust suspicious bit operation pata_imx: Convert to clk_prepare_enable/clk_disable_unprepare ahci: Enable SB600 64bit DMA on MSI K9AGM2 (MS-7327) v2 [libata] Prevent interface errors with Seagate FreeAgent GoFlex drivers/acpi/glue: revert accidental license-related 6b66d95895c bits libata-acpi: add missing inlines in libata.h i2c-omap: Add support for I2C_M_STOP message flag i2c: Fall back to emulated SMBus if the operation isn't supported natively i2c: Add SCCB support i2c-tiny-usb: Add support for the Robofuzz OSIF USB/I2C converter ...
Diffstat (limited to 'arch/sparc/kernel/pci.c')
-rw-r--r--arch/sparc/kernel/pci.c102
1 files changed, 6 insertions, 96 deletions
diff --git a/arch/sparc/kernel/pci.c b/arch/sparc/kernel/pci.c
index fdaf21811670..065b88c4f868 100644
--- a/arch/sparc/kernel/pci.c
+++ b/arch/sparc/kernel/pci.c
@@ -375,93 +375,6 @@ static void __devinit apb_calc_first_last(u8 map, u32 *first_p, u32 *last_p)
375 *last_p = last; 375 *last_p = last;
376} 376}
377 377
378/* For PCI bus devices which lack a 'ranges' property we interrogate
379 * the config space values to set the resources, just like the generic
380 * Linux PCI probing code does.
381 */
382static void __devinit pci_cfg_fake_ranges(struct pci_dev *dev,
383 struct pci_bus *bus,
384 struct pci_pbm_info *pbm)
385{
386 struct pci_bus_region region;
387 struct resource *res, res2;
388 u8 io_base_lo, io_limit_lo;
389 u16 mem_base_lo, mem_limit_lo;
390 unsigned long base, limit;
391
392 pci_read_config_byte(dev, PCI_IO_BASE, &io_base_lo);
393 pci_read_config_byte(dev, PCI_IO_LIMIT, &io_limit_lo);
394 base = (io_base_lo & PCI_IO_RANGE_MASK) << 8;
395 limit = (io_limit_lo & PCI_IO_RANGE_MASK) << 8;
396
397 if ((io_base_lo & PCI_IO_RANGE_TYPE_MASK) == PCI_IO_RANGE_TYPE_32) {
398 u16 io_base_hi, io_limit_hi;
399
400 pci_read_config_word(dev, PCI_IO_BASE_UPPER16, &io_base_hi);
401 pci_read_config_word(dev, PCI_IO_LIMIT_UPPER16, &io_limit_hi);
402 base |= (io_base_hi << 16);
403 limit |= (io_limit_hi << 16);
404 }
405
406 res = bus->resource[0];
407 if (base <= limit) {
408 res->flags = (io_base_lo & PCI_IO_RANGE_TYPE_MASK) | IORESOURCE_IO;
409 res2.flags = res->flags;
410 region.start = base;
411 region.end = limit + 0xfff;
412 pcibios_bus_to_resource(dev, &res2, &region);
413 if (!res->start)
414 res->start = res2.start;
415 if (!res->end)
416 res->end = res2.end;
417 }
418
419 pci_read_config_word(dev, PCI_MEMORY_BASE, &mem_base_lo);
420 pci_read_config_word(dev, PCI_MEMORY_LIMIT, &mem_limit_lo);
421 base = (mem_base_lo & PCI_MEMORY_RANGE_MASK) << 16;
422 limit = (mem_limit_lo & PCI_MEMORY_RANGE_MASK) << 16;
423
424 res = bus->resource[1];
425 if (base <= limit) {
426 res->flags = ((mem_base_lo & PCI_MEMORY_RANGE_TYPE_MASK) |
427 IORESOURCE_MEM);
428 region.start = base;
429 region.end = limit + 0xfffff;
430 pcibios_bus_to_resource(dev, res, &region);
431 }
432
433 pci_read_config_word(dev, PCI_PREF_MEMORY_BASE, &mem_base_lo);
434 pci_read_config_word(dev, PCI_PREF_MEMORY_LIMIT, &mem_limit_lo);
435 base = (mem_base_lo & PCI_PREF_RANGE_MASK) << 16;
436 limit = (mem_limit_lo & PCI_PREF_RANGE_MASK) << 16;
437
438 if ((mem_base_lo & PCI_PREF_RANGE_TYPE_MASK) == PCI_PREF_RANGE_TYPE_64) {
439 u32 mem_base_hi, mem_limit_hi;
440
441 pci_read_config_dword(dev, PCI_PREF_BASE_UPPER32, &mem_base_hi);
442 pci_read_config_dword(dev, PCI_PREF_LIMIT_UPPER32, &mem_limit_hi);
443
444 /*
445 * Some bridges set the base > limit by default, and some
446 * (broken) BIOSes do not initialize them. If we find
447 * this, just assume they are not being used.
448 */
449 if (mem_base_hi <= mem_limit_hi) {
450 base |= ((long) mem_base_hi) << 32;
451 limit |= ((long) mem_limit_hi) << 32;
452 }
453 }
454
455 res = bus->resource[2];
456 if (base <= limit) {
457 res->flags = ((mem_base_lo & PCI_MEMORY_RANGE_TYPE_MASK) |
458 IORESOURCE_MEM | IORESOURCE_PREFETCH);
459 region.start = base;
460 region.end = limit + 0xfffff;
461 pcibios_bus_to_resource(dev, res, &region);
462 }
463}
464
465/* Cook up fake bus resources for SUNW,simba PCI bridges which lack 378/* Cook up fake bus resources for SUNW,simba PCI bridges which lack
466 * a proper 'ranges' property. 379 * a proper 'ranges' property.
467 */ 380 */
@@ -535,7 +448,7 @@ static void __devinit of_scan_pci_bridge(struct pci_pbm_info *pbm,
535 } 448 }
536 449
537 bus->primary = dev->bus->number; 450 bus->primary = dev->bus->number;
538 bus->subordinate = busrange[1]; 451 pci_bus_insert_busn_res(bus, busrange[0], busrange[1]);
539 bus->bridge_ctl = 0; 452 bus->bridge_ctl = 0;
540 453
541 /* parse ranges property, or cook one up by hand for Simba */ 454 /* parse ranges property, or cook one up by hand for Simba */
@@ -550,7 +463,7 @@ static void __devinit of_scan_pci_bridge(struct pci_pbm_info *pbm,
550 apb_fake_ranges(dev, bus, pbm); 463 apb_fake_ranges(dev, bus, pbm);
551 goto after_ranges; 464 goto after_ranges;
552 } else if (ranges == NULL) { 465 } else if (ranges == NULL) {
553 pci_cfg_fake_ranges(dev, bus, pbm); 466 pci_read_bridge_bases(bus);
554 goto after_ranges; 467 goto after_ranges;
555 } 468 }
556 i = 1; 469 i = 1;
@@ -685,6 +598,10 @@ struct pci_bus * __devinit pci_scan_one_pbm(struct pci_pbm_info *pbm,
685 pbm->io_space.start); 598 pbm->io_space.start);
686 pci_add_resource_offset(&resources, &pbm->mem_space, 599 pci_add_resource_offset(&resources, &pbm->mem_space,
687 pbm->mem_space.start); 600 pbm->mem_space.start);
601 pbm->busn.start = pbm->pci_first_busno;
602 pbm->busn.end = pbm->pci_last_busno;
603 pbm->busn.flags = IORESOURCE_BUS;
604 pci_add_resource(&resources, &pbm->busn);
688 bus = pci_create_root_bus(parent, pbm->pci_first_busno, pbm->pci_ops, 605 bus = pci_create_root_bus(parent, pbm->pci_first_busno, pbm->pci_ops,
689 pbm, &resources); 606 pbm, &resources);
690 if (!bus) { 607 if (!bus) {
@@ -693,8 +610,6 @@ struct pci_bus * __devinit pci_scan_one_pbm(struct pci_pbm_info *pbm,
693 pci_free_resource_list(&resources); 610 pci_free_resource_list(&resources);
694 return NULL; 611 return NULL;
695 } 612 }
696 bus->secondary = pbm->pci_first_busno;
697 bus->subordinate = pbm->pci_last_busno;
698 613
699 pci_of_scan_bus(pbm, node, bus); 614 pci_of_scan_bus(pbm, node, bus);
700 pci_bus_add_devices(bus); 615 pci_bus_add_devices(bus);
@@ -747,11 +662,6 @@ int pcibios_enable_device(struct pci_dev *dev, int mask)
747 return 0; 662 return 0;
748} 663}
749 664
750char * __devinit pcibios_setup(char *str)
751{
752 return str;
753}
754
755/* Platform support for /proc/bus/pci/X/Y mmap()s. */ 665/* Platform support for /proc/bus/pci/X/Y mmap()s. */
756 666
757/* If the user uses a host-bridge as the PCI device, he may use 667/* If the user uses a host-bridge as the PCI device, he may use