[PATCH v8 08/45] powerpc/powernv: Fix initial IO and M32 segmap
flat view
STALE3812d
From: Gavin Shan <hidden>
Date: 2016-02-17 03:43:51
Also in:
linux-devicetree, linux-pci
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Linus Torvalds
Revision v8 of 4 in this series.
Revisions (4)
- v7 [diff vs current]
- v8 current
- v9 [diff vs current]
- v10 [diff vs current]
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. In order to use IODA_INVALID_PE (-1) to represent invalid PE number, the types of those two arrays are changed from "unsigned int" to "int". Signed-off-by: Gavin Shan <redacted> --- arch/powerpc/platforms/powernv/pci-ioda.c | 9 +++++++-- arch/powerpc/platforms/powernv/pci.h | 4 ++-- 2 files changed, 9 insertions(+), 4 deletions(-)
diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c b/arch/powerpc/platforms/powernv/pci-ioda.c
index 1d2514f..44cc5f3 100644
--- a/arch/powerpc/platforms/powernv/pci-ioda.c
+++ b/arch/powerpc/platforms/powernv/pci-ioda.c@@ -3239,7 +3239,7 @@ static void __init pnv_pci_init_ioda_phb(struct device_node *np, unsigned long size, m32map_off, pemap_off, iomap_off = 0; const __be64 *prop64; const __be32 *prop32; - int len; + int i, len; u64 phb_id; void *aux; long rc;
@@ -3334,8 +3334,13 @@ 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 (i = 0; i < phb->ioda.total_pe_num; i++) + phb->ioda.m32_segmap[i] = IODA_INVALID_PE; + if (phb->type == PNV_PHB_IODA1) { phb->ioda.io_segmap = aux + iomap_off; + for (i = 0; i < phb->ioda.total_pe_num; i++) + phb->ioda.io_segmap[i] = IODA_INVALID_PE; + } phb->ioda.pe_array = aux + pemap_off; set_bit(phb->ioda.reserved_pe_idx, phb->ioda.pe_alloc);
diff --git a/arch/powerpc/platforms/powernv/pci.h b/arch/powerpc/platforms/powernv/pci.h
index 784882a..36c4965 100644
--- a/arch/powerpc/platforms/powernv/pci.h
+++ b/arch/powerpc/platforms/powernv/pci.h@@ -146,8 +146,8 @@ struct pnv_phb { struct pnv_ioda_pe *pe_array; /* M32 & IO segment maps */ - unsigned int *m32_segmap; - unsigned int *io_segmap; + int *m32_segmap; + int *io_segmap; /* IRQ chip */ int irq_chip_init;
--
2.1.0