diff options
Diffstat (limited to 'arch/powerpc/sysdev/fsl_pci.c')
| -rw-r--r-- | arch/powerpc/sysdev/fsl_pci.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/arch/powerpc/sysdev/fsl_pci.c b/arch/powerpc/sysdev/fsl_pci.c index 85729f49764f..0ef9df49f0f2 100644 --- a/arch/powerpc/sysdev/fsl_pci.c +++ b/arch/powerpc/sysdev/fsl_pci.c @@ -37,6 +37,7 @@ #include <asm/pci-bridge.h> #include <asm/ppc-pci.h> #include <asm/machdep.h> +#include <asm/mpc85xx.h> #include <asm/disassemble.h> #include <asm/ppc-opcode.h> #include <sysdev/fsl_soc.h> @@ -527,6 +528,8 @@ int fsl_add_bridge(struct platform_device *pdev, int is_primary) u8 hdr_type, progif; struct device_node *dev; struct ccsr_pci __iomem *pci; + u16 temp; + u32 svr = mfspr(SPRN_SVR); dev = pdev->dev.of_node; @@ -596,6 +599,27 @@ int fsl_add_bridge(struct platform_device *pdev, int is_primary) PPC_INDIRECT_TYPE_SURPRESS_PRIMARY_BUS; if (fsl_pcie_check_link(hose)) hose->indirect_type |= PPC_INDIRECT_TYPE_NO_PCIE_LINK; + } else { + /* + * Set PBFR(PCI Bus Function Register)[10] = 1 to + * disable the combining of crossing cacheline + * boundary requests into one burst transaction. + * PCI-X operation is not affected. + * Fix erratum PCI 5 on MPC8548 + */ +#define PCI_BUS_FUNCTION 0x44 +#define PCI_BUS_FUNCTION_MDS 0x400 /* Master disable streaming */ + if (((SVR_SOC_VER(svr) == SVR_8543) || + (SVR_SOC_VER(svr) == SVR_8545) || + (SVR_SOC_VER(svr) == SVR_8547) || + (SVR_SOC_VER(svr) == SVR_8548)) && + !early_find_capability(hose, 0, 0, PCI_CAP_ID_PCIX)) { + early_read_config_word(hose, 0, 0, + PCI_BUS_FUNCTION, &temp); + temp |= PCI_BUS_FUNCTION_MDS; + early_write_config_word(hose, 0, 0, + PCI_BUS_FUNCTION, temp); + } } printk(KERN_INFO "Found FSL PCI host bridge at 0x%016llx. " |