From 3fa23ff8ff3f0fa4f187bc46f81c69b1fdeecd9a Mon Sep 17 00:00:00 2001 From: Gavin Shan Date: Tue, 3 May 2016 15:41:26 +1000 Subject: [PATCH] powerpc/powernv: Fix initial IO and M32 segmap There are two arrays for IO and M32 segment maps on every PHB. The index of the arrays are segment number and the value stored in the corresponding element is PE number, indicating the segment is assigned to the PE. Initially, all elements in those two arrays are zeroes, meaning all segments are assigned to PE#0. It's wrong. This fixes the initial values in the elements of those two arrays to IODA_INVALID_PE, meaning all segments aren't assigned to any PE. Signed-off-by: Gavin Shan Reviewed-by: Alexey Kardashevskiy Signed-off-by: Michael Ellerman --- arch/powerpc/platforms/powernv/pci-ioda.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c b/arch/powerpc/platforms/powernv/pci-ioda.c index 4aa6cdf33268..59b20e5fe4ec 100644 --- a/arch/powerpc/platforms/powernv/pci-ioda.c +++ b/arch/powerpc/platforms/powernv/pci-ioda.c @@ -3240,6 +3240,7 @@ static void __init pnv_pci_init_ioda_phb(struct device_node *np, const __be64 *prop64; const __be32 *prop32; int len; + unsigned int segno; u64 phb_id; void *aux; long rc; @@ -3334,8 +3335,13 @@ static void __init pnv_pci_init_ioda_phb(struct device_node *np, aux = memblock_virt_alloc(size, 0); phb->ioda.pe_alloc = aux; phb->ioda.m32_segmap = aux + m32map_off; - if (phb->type == PNV_PHB_IODA1) + for (segno = 0; segno < phb->ioda.total_pe_num; segno++) + phb->ioda.m32_segmap[segno] = IODA_INVALID_PE; + if (phb->type == PNV_PHB_IODA1) { phb->ioda.io_segmap = aux + iomap_off; + for (segno = 0; segno < phb->ioda.total_pe_num; segno++) + phb->ioda.io_segmap[segno] = IODA_INVALID_PE; + } phb->ioda.pe_array = aux + pemap_off; set_bit(phb->ioda.reserved_pe_idx, phb->ioda.pe_alloc);