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authorBjorn Helgaas <bhelgaas@google.com>2015-06-09 18:54:07 -0500
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2015-07-10 10:37:59 -0700
commit38f69b4caebc05f39c8f27a7d84f4b283699f600 (patch)
tree407278f68f6ed9d43447e4b3056848fe60c2fb10
parent4c5e6d5cb727e1e3b9bde99752ef3b14d66db546 (diff)
downloadlwn-38f69b4caebc05f39c8f27a7d84f4b283699f600.tar.gz
lwn-38f69b4caebc05f39c8f27a7d84f4b283699f600.zip
x86/PCI: Use host bridge _CRS info on Foxconn K8M890-8237A
commit 1dace0116d0b05c967d94644fc4dfe96be2ecd3d upstream. The Foxconn K8M890-8237A has two PCI host bridges, and we can't assign resources correctly without the information from _CRS that tells us which address ranges are claimed by which bridge. In the bugs mentioned below, we incorrectly assign a sound card address (this example is from 1033299): bus: 00 index 2 [mem 0x80000000-0xfcffffffff] ACPI: PCI Root Bridge [PCI0] (domain 0000 [bus 00-7f]) pci_root PNP0A08:00: host bridge window [mem 0x80000000-0xbfefffff] (ignored) pci_root PNP0A08:00: host bridge window [mem 0xc0000000-0xdfffffff] (ignored) pci_root PNP0A08:00: host bridge window [mem 0xf0000000-0xfebfffff] (ignored) ACPI: PCI Root Bridge [PCI1] (domain 0000 [bus 80-ff]) pci_root PNP0A08:01: host bridge window [mem 0xbff00000-0xbfffffff] (ignored) pci 0000:80:01.0: [1106:3288] type 0 class 0x000403 pci 0000:80:01.0: reg 10: [mem 0xbfffc000-0xbfffffff 64bit] pci 0000:80:01.0: address space collision: [mem 0xbfffc000-0xbfffffff 64bit] conflicts with PCI Bus #00 [mem 0x80000000-0xfcffffffff] pci 0000:80:01.0: BAR 0: assigned [mem 0xfd00000000-0xfd00003fff 64bit] BUG: unable to handle kernel paging request at ffffc90000378000 IP: [<ffffffffa0345f63>] azx_create+0x37c/0x822 [snd_hda_intel] We assigned 0xfd_0000_0000, but that is not in any of the host bridge windows, and the sound card doesn't work. Turn on pci=use_crs automatically for this system. Link: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/931368 Link: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1033299 Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--arch/x86/pci/acpi.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/x86/pci/acpi.c b/arch/x86/pci/acpi.c
index 2eaf4bf002ee..bf001382d170 100644
--- a/arch/x86/pci/acpi.c
+++ b/arch/x86/pci/acpi.c
@@ -84,6 +84,17 @@ static const struct dmi_system_id pci_crs_quirks[] __initconst = {
DMI_MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies, LTD"),
},
},
+ /* https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/931368 */
+ /* https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1033299 */
+ {
+ .callback = set_use_crs,
+ .ident = "Foxconn K8M890-8237A",
+ .matches = {
+ DMI_MATCH(DMI_BOARD_VENDOR, "Foxconn"),
+ DMI_MATCH(DMI_BOARD_NAME, "K8M890-8237A"),
+ DMI_MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies, LTD"),
+ },
+ },
/* Now for the blacklist.. */