From 2e0d232bff31973f58c33412b45fce51b6770698 Mon Sep 17 00:00:00 2001 From: Mike Habeck Date: Fri, 6 Apr 2007 12:04:39 -0500 Subject: [PATCH] [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 Signed-off-by: Tony Luck --- arch/ia64/sn/pci/pcibr/pcibr_dma.c | 8 ++++++-- include/asm-ia64/sn/pcibr_provider.h | 5 +++-- 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) -- 2.41.1