diff options
| -rw-r--r-- | arch/arm/mach-ixp2000/core.c | 35 |
1 files changed, 13 insertions, 22 deletions
diff --git a/arch/arm/mach-ixp2000/core.c b/arch/arm/mach-ixp2000/core.c index df140962bb0f..6851abaf5524 100644 --- a/arch/arm/mach-ixp2000/core.c +++ b/arch/arm/mach-ixp2000/core.c @@ -84,63 +84,54 @@ static struct map_desc ixp2000_io_desc[] __initdata = { .virtual = IXP2000_CAP_VIRT_BASE, .pfn = __phys_to_pfn(IXP2000_CAP_PHYS_BASE), .length = IXP2000_CAP_SIZE, - .type = MT_DEVICE + .type = MT_IXP2000_DEVICE, }, { .virtual = IXP2000_INTCTL_VIRT_BASE, .pfn = __phys_to_pfn(IXP2000_INTCTL_PHYS_BASE), .length = IXP2000_INTCTL_SIZE, - .type = MT_DEVICE + .type = MT_IXP2000_DEVICE, }, { .virtual = IXP2000_PCI_CREG_VIRT_BASE, .pfn = __phys_to_pfn(IXP2000_PCI_CREG_PHYS_BASE), .length = IXP2000_PCI_CREG_SIZE, - .type = MT_DEVICE + .type = MT_IXP2000_DEVICE, }, { .virtual = IXP2000_PCI_CSR_VIRT_BASE, .pfn = __phys_to_pfn(IXP2000_PCI_CSR_PHYS_BASE), .length = IXP2000_PCI_CSR_SIZE, - .type = MT_DEVICE + .type = MT_IXP2000_DEVICE, }, { .virtual = IXP2000_MSF_VIRT_BASE, .pfn = __phys_to_pfn(IXP2000_MSF_PHYS_BASE), .length = IXP2000_MSF_SIZE, - .type = MT_DEVICE + .type = MT_IXP2000_DEVICE, }, { .virtual = IXP2000_PCI_IO_VIRT_BASE, .pfn = __phys_to_pfn(IXP2000_PCI_IO_PHYS_BASE), .length = IXP2000_PCI_IO_SIZE, - .type = MT_DEVICE + .type = MT_IXP2000_DEVICE, }, { .virtual = IXP2000_PCI_CFG0_VIRT_BASE, .pfn = __phys_to_pfn(IXP2000_PCI_CFG0_PHYS_BASE), .length = IXP2000_PCI_CFG0_SIZE, - .type = MT_DEVICE + .type = MT_IXP2000_DEVICE, }, { .virtual = IXP2000_PCI_CFG1_VIRT_BASE, .pfn = __phys_to_pfn(IXP2000_PCI_CFG1_PHYS_BASE), .length = IXP2000_PCI_CFG1_SIZE, - .type = MT_DEVICE + .type = MT_IXP2000_DEVICE, } }; void __init ixp2000_map_io(void) { - extern unsigned int processor_id; - /* - * On IXP2400 CPUs we need to use MT_IXP2000_DEVICE for - * tweaking the PMDs so XCB=101. On IXP2800s we use the normal - * PMD flags. + * On IXP2400 CPUs we need to use MT_IXP2000_DEVICE so that + * XCB=101 (to avoid triggering erratum #66), and given that + * this mode speeds up I/O accesses and we have write buffer + * flushes in the right places anyway, it doesn't hurt to use + * XCB=101 for all IXP2000s. */ - if ((processor_id & 0xfffffff0) == 0x69054190) { - int i; - - printk(KERN_INFO "Enabling IXP2400 erratum #66 workaround\n"); - - for(i=0;i<ARRAY_SIZE(ixp2000_io_desc);i++) - ixp2000_io_desc[i].type = MT_IXP2000_DEVICE; - } - iotable_init(ixp2000_io_desc, ARRAY_SIZE(ixp2000_io_desc)); /* Set slowport to 8-bit mode. */ |