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Commit 1665c4a8 authored by Gavin Shan's avatar Gavin Shan Committed by Michael Ellerman
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powerpc/powernv: Check PHB type in advance 



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: default avatarGavin Shan <gwshan@linux.vnet.ibm.com>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
parent b30e7590

arch/powerpc/platforms/powernv/pci-ioda.c

+6 −6
Original line number Diff line number Diff line
@@ -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;