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x86, AMD, NB: Add multi-domain support

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Fix get_node_id to match northbridge IDs from the array of detected
ones, allowing multi-server support such as with Numascale's
NumaConnect, renaming to 'amd_get_node_id' for consistency.

Signed-off-by: Daniel J Blueman <daniel@numascale-asia.com>
Link: http://lkml.kernel.org/r/1353997932-8475-1-git-send-email-daniel@numascale-asia.com
[Boris: shorten lines to fit 80 cols]
Signed-off-by: Borislav Petkov <bp@alien8.de>
This commit is contained in:
Daniel J Blueman
2012-11-27 14:32:09 +08:00
committed by Borislav Petkov
parent 9931faca02
commit 772c3ff385
3 changed files with 20 additions and 9 deletions
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17
arch/x86/include/asm/amd_nb.h
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@@ -81,6 +81,23 @@ static inline struct amd_northbridge *node_to_amd_nb(int node)
return (node < amd_northbridges.num) ? &amd_northbridges.nb[node] : NULL;
}
static inline u16 amd_get_node_id(struct pci_dev *pdev)
{
struct pci_dev *misc;
int i;
for (i = 0; i != amd_nb_num(); i++) {
misc = node_to_amd_nb(i)->misc;
if (pci_domain_nr(misc->bus) == pci_domain_nr(pdev->bus) &&
PCI_SLOT(misc->devfn) == PCI_SLOT(pdev->devfn))
return i;
}
WARN(1, "Unable to find AMD Northbridge id for %s\n", pci_name(pdev));
return 0;
}
#else
#define amd_nb_num(x) 0