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powerpc/powernv: Check PHB type in advance

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The patch checks PHB type a bit early to save a bit cycles
for P7 because we don't support M64 for P7IOC no matter what
OPAL firmware we have.

Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Gavin Shan 2014-11-12 13:36:04 +11:00 committed by Michael Ellerman
parent b30e759072
commit 1665c4a892
1 changed files with 6 additions and 6 deletions
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12
arch/powerpc/platforms/powernv/pci-ioda.c
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@ -313,6 +313,12 @@ static void __init pnv_ioda_parse_m64_window(struct pnv_phb *phb)
const u32 *r;
u64 pci_addr;
/* FIXME: Support M64 for P7IOC */
if (phb->type != PNV_PHB_IODA2) {
pr_info(" Not support M64 window\n");
return;
}
if (!firmware_has_feature(FW_FEATURE_OPALv3)) {
pr_info(" Firmware too old to support M64 window\n");
return;
@ -325,12 +331,6 @@ static void __init pnv_ioda_parse_m64_window(struct pnv_phb *phb)
return;
}
/* FIXME: Support M64 for P7IOC */
if (phb->type != PNV_PHB_IODA2) {
pr_info(" Not support M64 window\n");
return;
}
res = &hose->mem_resources[1];
res->start = of_translate_address(dn, r + 2);
res->end = res->start + of_read_number(r + 4, 2) - 1;