Commit 027fa02f authored by Gavin Shan's avatar Gavin Shan Committed by Benjamin Herrenschmidt

powerpc/powernv: Don't map M64 segments using M32DT

If M64 has been supported, the prefetchable 64-bits memory resources
shouldn't be mapped to the corresponding PE# via M32DT. Unfortunately,
we're doing that in pnv_ioda_setup_pe_seg() wrongly. The issue was
introduced by commit 262af557 ("powerpc/powernv: Enable M64 aperatus
for PHB3"). The patch fixes the issue by simply skipping M64 resources
when updating to M32DT.

Cc: <stable@vger.kernel.org>  # v3.17+
Signed-off-by: default avatarGavin Shan <gwshan@linux.vnet.ibm.com>
Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
parent 433185d2
...@@ -1777,7 +1777,8 @@ static void pnv_ioda_setup_pe_seg(struct pci_controller *hose, ...@@ -1777,7 +1777,8 @@ static void pnv_ioda_setup_pe_seg(struct pci_controller *hose,
region.start += phb->ioda.io_segsize; region.start += phb->ioda.io_segsize;
index++; index++;
} }
} else if (res->flags & IORESOURCE_MEM) { } else if ((res->flags & IORESOURCE_MEM) &&
!pnv_pci_is_mem_pref_64(res->flags)) {
region.start = res->start - region.start = res->start -
hose->mem_offset[0] - hose->mem_offset[0] -
phb->ioda.m32_pci_base; phb->ioda.m32_pci_base;
......
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