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authorMike Habeck <habeck@sgi.com>2007-04-06 12:04:39 -0500
committerTony Luck <tony.luck@intel.com>2007-04-06 15:38:12 -0700
commit2e0d232bff31973f58c33412b45fce51b6770698 (patch)
treeb23f921ec8786904b56e2b6c2c42822630757cb4
parent8a3a78d1498c4c13c3ec235a4b6338624b6ef68d (diff)
[IA64] SGI Altix : fix pcibr_dmamap_ate32() bug
On a SGI Altix TIOCP based PCI bus we need to include the ATE_PIO attribute bit if we're mapping a 32bit MSI address. Signed-off-by: Mike Habeck <habeck@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
-rw-r--r--arch/ia64/sn/pci/pcibr/pcibr_dma.c8
-rw-r--r--include/asm-ia64/sn/pcibr_provider.h5
2 files changed, 9 insertions, 4 deletions
diff --git a/arch/ia64/sn/pci/pcibr/pcibr_dma.c b/arch/ia64/sn/pci/pcibr/pcibr_dma.c
index 1ee977fb6eb..95af40cb22f 100644
--- a/arch/ia64/sn/pci/pcibr/pcibr_dma.c
+++ b/arch/ia64/sn/pci/pcibr/pcibr_dma.c
@@ -96,10 +96,14 @@ pcibr_dmamap_ate32(struct pcidev_info *info,
}
/*
- * If we're mapping for MSI, set the MSI bit in the ATE
+ * If we're mapping for MSI, set the MSI bit in the ATE. If it's a
+ * TIOCP based pci bus, we also need to set the PIO bit in the ATE.
*/
- if (dma_flags & SN_DMA_MSI)
+ if (dma_flags & SN_DMA_MSI) {
ate |= PCI32_ATE_MSI;
+ if (IS_TIOCP_SOFT(pcibus_info))
+ ate |= PCI32_ATE_PIO;
+ }
ate_write(pcibus_info, ate_index, ate_count, ate);
diff --git a/include/asm-ia64/sn/pcibr_provider.h b/include/asm-ia64/sn/pcibr_provider.h
index 17cb6cc3f21..da205b7cdaa 100644
--- a/include/asm-ia64/sn/pcibr_provider.h
+++ b/include/asm-ia64/sn/pcibr_provider.h
@@ -21,6 +21,7 @@
#define IS_PCI_BRIDGE_ASIC(asic) (asic == PCIIO_ASIC_TYPE_PIC || \
asic == PCIIO_ASIC_TYPE_TIOCP)
#define IS_PIC_SOFT(ps) (ps->pbi_bridge_type == PCIBR_BRIDGETYPE_PIC)
+#define IS_TIOCP_SOFT(ps) (ps->pbi_bridge_type == PCIBR_BRIDGETYPE_TIOCP)
/*
@@ -53,8 +54,8 @@
* Bridge PMU Address Transaltion Entry Attibutes
*/
#define PCI32_ATE_V (0x1 << 0)
-#define PCI32_ATE_CO (0x1 << 1)
-#define PCI32_ATE_PREC (0x1 << 2)
+#define PCI32_ATE_CO (0x1 << 1) /* PIC ASIC ONLY */
+#define PCI32_ATE_PIO (0x1 << 1) /* TIOCP ASIC ONLY */
#define PCI32_ATE_MSI (0x1 << 2)
#define PCI32_ATE_PREF (0x1 << 3)
#define PCI32_ATE_BAR (0x1 << 4)