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x86, amd: Extend AMD northbridge caching code to support "Link Control" devices

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"Link Control" devices (NB function 4) will be used by L3 cache
partitioning on family 0x15.

Signed-off-by: Hans Rosenfeld <hans.rosenfeld@amd.com>
Cc: <andreas.herrmann3@amd.com>
LKML-Reference: <1295881543-572552-4-git-send-email-hans.rosenfeld@amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Hans Rosenfeld 2011-01-24 16:05:42 +01:00 committed by Ingo Molnar
parent b453de02b7
commit 41b2610c34
3 changed files with 11 additions and 2 deletions
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1
arch/x86/include/asm/amd_nb.h
View file

@ -26,6 +26,7 @@ extern void amd_get_nodes(struct bootnode *nodes);
struct amd_northbridge {
struct pci_dev *misc;
struct pci_dev *link;
};
struct amd_northbridge_info {

11
arch/x86/kernel/amd_nb.c
View file

@ -20,6 +20,11 @@ struct pci_device_id amd_nb_misc_ids[] = {
};
EXPORT_SYMBOL(amd_nb_misc_ids);
static struct pci_device_id amd_nb_link_ids[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_15H_NB_LINK) },
{}
};
const struct amd_nb_bus_dev_range amd_nb_bus_dev_ranges[] __initconst = {
{ 0x00, 0x18, 0x20 },
{ 0xff, 0x00, 0x20 },
@ -45,7 +50,7 @@ int amd_cache_northbridges(void)
{
int i = 0;
struct amd_northbridge *nb;
struct pci_dev *misc;
struct pci_dev *misc, *link;
if (amd_nb_num())
return 0;
@ -64,10 +69,12 @@ int amd_cache_northbridges(void)
amd_northbridges.nb = nb;
amd_northbridges.num = i;
misc = NULL;
link = misc = NULL;
for (i = 0; i != amd_nb_num(); i++) {
node_to_amd_nb(i)->misc = misc =
next_northbridge(misc, amd_nb_misc_ids);
node_to_amd_nb(i)->link = link =
next_northbridge(link, amd_nb_link_ids);
}
/* some CPU families (e.g. family 0x11) do not support GART */

1
include/linux/pci_ids.h
View file

@ -518,6 +518,7 @@
#define PCI_DEVICE_ID_AMD_11H_NB_MISC 0x1303
#define PCI_DEVICE_ID_AMD_11H_NB_LINK 0x1304
#define PCI_DEVICE_ID_AMD_15H_NB_MISC 0x1603
#define PCI_DEVICE_ID_AMD_15H_NB_LINK 0x1604
#define PCI_DEVICE_ID_AMD_CNB17H_F3 0x1703
#define PCI_DEVICE_ID_AMD_LANCE 0x2000
#define PCI_DEVICE_ID_AMD_LANCE_HOME 0x2001