redonkable/alistair23-linux
redonkable/alistair23-linux
1
0
Fork 0
Code Releases Activity

pci-v4.15-fixes-3

Browse source 
-----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJaZ5GHAAoJEFmIoMA60/r8UmAP/AjrS+C+OSMHzM/U/h+UHmou
 DRg5Tg7gG3PjnnKULEQno4BSGM5VJeXpM+QC8Ypqa2I1T4GTHVHiSn6qtOi4yn0R
 k9CAGyeRD1zYH4Mtw4dyUOVE5j0ANoBuji0KklawqaxcPFJDh6FhSCbChPq0WjIA
 ZarpJZ4YKeJF5ZYXFs4G5W6EjnXokYogjZL3lzCOVXoTC9aVfo+NoJ9Hg9P38VA3
 WmYaLUEbIzV40JXkDieZq7nqO8m3mFBtxi7+74BvsjtgozW0og1tPNI6Hige6/U3
 dUAzrdNGQg52T3pTMm8r0+efagDV11UO0IBhVhktNzTTVaUggxluBEza//FaQ85m
 PLm7vsnwtIALujnp74VcFnTsVM2yYa9NeaPNIQ9FQ6kOB7TS0/ELtyHaPLNS8JoM
 lhssdhT3jmVNg86UG2pOi9MJZhyYb6SQmWAGmYopzwEn/idBTOcLsTdcbptF5LfP
 0hbc9BLI0wCF8sv0JXD4IBQFWN264z1vPGNDWD4cnkEMPiAJ23h1ySpS3S0HjZe3
 c6AMEMNj5E1b6unwIebBHfeSj4DUUnfyypb4/oICNxCThQBIzPyXtnlk07DNFMOl
 9pRZBebfUl5xAZeWz2Sxxvs0PqMc8QEDa5j8YzLS3cgz9y1i80Hn6fGxSeHptgC+
 Zb4SYRr5S82kU3SbAtnY
 =tRVW
 -----END PGP SIGNATURE-----

Merge tag 'pci-v4.15-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI fix from Bjorn Helgaas:
 "Fix AMD regression due to not re-enabling the big window on resume
  (Christian König)"

* tag 'pci-v4.15-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
  x86/PCI: Enable AMD 64-bit window on resume
This commit is contained in:
Linus Torvalds 2018-01-23 12:45:40 -08:00
parent a84a8ab94e 838cda3697
commit 1f07476ec1
1 changed files with 20 additions and 12 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

32
arch/x86/pci/fixup.c
View file

@ -662,11 +662,11 @@ DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x2033, quirk_no_aersid);
*/
static void pci_amd_enable_64bit_bar(struct pci_dev *dev)
{
static const char *name = "PCI Bus 0000:00";
struct resource *res, *conflict;
u32 base, limit, high;
struct pci_dev *other;
struct resource *res;
unsigned i;
int r;
if (!(pci_probe & PCI_BIG_ROOT_WINDOW))
return;
@ -707,21 +707,26 @@ static void pci_amd_enable_64bit_bar(struct pci_dev *dev)
* Allocate a 256GB window directly below the 0xfd00000000 hardware
* limit (see AMD Family 15h Models 30h-3Fh BKDG, sec 2.4.6).
*/
res->name = "PCI Bus 0000:00";
res->name = name;
res->flags = IORESOURCE_PREFETCH | IORESOURCE_MEM |
IORESOURCE_MEM_64 | IORESOURCE_WINDOW;
res->start = 0xbd00000000ull;
res->end = 0xfd00000000ull - 1;
r = request_resource(&iomem_resource, res);
if (r) {
conflict = request_resource_conflict(&iomem_resource, res);
if (conflict) {
kfree(res);
return;
}
if (conflict->name != name)
return;
dev_info(&dev->dev, "adding root bus resource %pR (tainting kernel)\n",
res);
add_taint(TAINT_FIRMWARE_WORKAROUND, LOCKDEP_STILL_OK);
/* We are resuming from suspend; just reenable the window */
res = conflict;
} else {
dev_info(&dev->dev, "adding root bus resource %pR (tainting kernel)\n",
res);
add_taint(TAINT_FIRMWARE_WORKAROUND, LOCKDEP_STILL_OK);
pci_bus_add_resource(dev->bus, res, 0);
}
base = ((res->start >> 8) & AMD_141b_MMIO_BASE_MMIOBASE_MASK) |
AMD_141b_MMIO_BASE_RE_MASK | AMD_141b_MMIO_BASE_WE_MASK;
@ -733,13 +738,16 @@ static void pci_amd_enable_64bit_bar(struct pci_dev *dev)
pci_write_config_dword(dev, AMD_141b_MMIO_HIGH(i), high);
pci_write_config_dword(dev, AMD_141b_MMIO_LIMIT(i), limit);
pci_write_config_dword(dev, AMD_141b_MMIO_BASE(i), base);
pci_bus_add_resource(dev->bus, res, 0);
}
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x1401, pci_amd_enable_64bit_bar);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x141b, pci_amd_enable_64bit_bar);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x1571, pci_amd_enable_64bit_bar);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x15b1, pci_amd_enable_64bit_bar);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x1601, pci_amd_enable_64bit_bar);
DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, 0x1401, pci_amd_enable_64bit_bar);
DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, 0x141b, pci_amd_enable_64bit_bar);
DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, 0x1571, pci_amd_enable_64bit_bar);
DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, 0x15b1, pci_amd_enable_64bit_bar);
DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, 0x1601, pci_amd_enable_64bit_bar);
#endif