From: Russell King Date: Sat, 5 May 2007 19:28:16 +0000 (+0100) Subject: [ARM] mm 9: add additional device memory types X-Git-Tag: v2.6.22-rc1~1009^2~3 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0af92befeb4b330c46cce6b520b2cc775cd6931f;p=linux-2.6 [ARM] mm 9: add additional device memory types Add cached device type for ioremap_cached(). Group all device memory types together, and ensure that they all have a "MT_DEVICE" prefix. Signed-off-by: Russell King --- diff --git a/arch/arm/mach-ixp2000/core.c b/arch/arm/mach-ixp2000/core.c index 27b7480f4a..9cf2498dc9 100644 --- a/arch/arm/mach-ixp2000/core.c +++ b/arch/arm/mach-ixp2000/core.c @@ -84,59 +84,59 @@ 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_IXP2000_DEVICE, + .type = MT_DEVICE_IXP2000, }, { .virtual = IXP2000_INTCTL_VIRT_BASE, .pfn = __phys_to_pfn(IXP2000_INTCTL_PHYS_BASE), .length = IXP2000_INTCTL_SIZE, - .type = MT_IXP2000_DEVICE, + .type = MT_DEVICE_IXP2000, }, { .virtual = IXP2000_PCI_CREG_VIRT_BASE, .pfn = __phys_to_pfn(IXP2000_PCI_CREG_PHYS_BASE), .length = IXP2000_PCI_CREG_SIZE, - .type = MT_IXP2000_DEVICE, + .type = MT_DEVICE_IXP2000, }, { .virtual = IXP2000_PCI_CSR_VIRT_BASE, .pfn = __phys_to_pfn(IXP2000_PCI_CSR_PHYS_BASE), .length = IXP2000_PCI_CSR_SIZE, - .type = MT_IXP2000_DEVICE, + .type = MT_DEVICE_IXP2000, }, { .virtual = IXP2000_MSF_VIRT_BASE, .pfn = __phys_to_pfn(IXP2000_MSF_PHYS_BASE), .length = IXP2000_MSF_SIZE, - .type = MT_IXP2000_DEVICE, + .type = MT_DEVICE_IXP2000, }, { .virtual = IXP2000_SCRATCH_RING_VIRT_BASE, .pfn = __phys_to_pfn(IXP2000_SCRATCH_RING_PHYS_BASE), .length = IXP2000_SCRATCH_RING_SIZE, - .type = MT_IXP2000_DEVICE, + .type = MT_DEVICE_IXP2000, }, { .virtual = IXP2000_SRAM0_VIRT_BASE, .pfn = __phys_to_pfn(IXP2000_SRAM0_PHYS_BASE), .length = IXP2000_SRAM0_SIZE, - .type = MT_IXP2000_DEVICE, + .type = MT_DEVICE_IXP2000, }, { .virtual = IXP2000_PCI_IO_VIRT_BASE, .pfn = __phys_to_pfn(IXP2000_PCI_IO_PHYS_BASE), .length = IXP2000_PCI_IO_SIZE, - .type = MT_IXP2000_DEVICE, + .type = MT_DEVICE_IXP2000, }, { .virtual = IXP2000_PCI_CFG0_VIRT_BASE, .pfn = __phys_to_pfn(IXP2000_PCI_CFG0_PHYS_BASE), .length = IXP2000_PCI_CFG0_SIZE, - .type = MT_IXP2000_DEVICE, + .type = MT_DEVICE_IXP2000, }, { .virtual = IXP2000_PCI_CFG1_VIRT_BASE, .pfn = __phys_to_pfn(IXP2000_PCI_CFG1_PHYS_BASE), .length = IXP2000_PCI_CFG1_SIZE, - .type = MT_IXP2000_DEVICE, + .type = MT_DEVICE_IXP2000, } }; void __init ixp2000_map_io(void) { /* - * On IXP2400 CPUs we need to use MT_IXP2000_DEVICE so that + * On IXP2400 CPUs we need to use MT_DEVICE_IXP2000 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 diff --git a/arch/arm/mach-ixp2000/enp2611.c b/arch/arm/mach-ixp2000/enp2611.c index ac29298c5d..500e997ba7 100644 --- a/arch/arm/mach-ixp2000/enp2611.c +++ b/arch/arm/mach-ixp2000/enp2611.c @@ -70,17 +70,17 @@ static struct map_desc enp2611_io_desc[] __initdata = { .virtual = ENP2611_CALEB_VIRT_BASE, .pfn = __phys_to_pfn(ENP2611_CALEB_PHYS_BASE), .length = ENP2611_CALEB_SIZE, - .type = MT_IXP2000_DEVICE, + .type = MT_DEVICE_IXP2000, }, { .virtual = ENP2611_PM3386_0_VIRT_BASE, .pfn = __phys_to_pfn(ENP2611_PM3386_0_PHYS_BASE), .length = ENP2611_PM3386_0_SIZE, - .type = MT_IXP2000_DEVICE, + .type = MT_DEVICE_IXP2000, }, { .virtual = ENP2611_PM3386_1_VIRT_BASE, .pfn = __phys_to_pfn(ENP2611_PM3386_1_PHYS_BASE), .length = ENP2611_PM3386_1_SIZE, - .type = MT_IXP2000_DEVICE, + .type = MT_DEVICE_IXP2000, } }; diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c index 44f385a3eb..2ba1530d1c 100644 --- a/arch/arm/mm/mmu.c +++ b/arch/arm/mm/mmu.c @@ -176,14 +176,35 @@ void adjust_cr(unsigned long mask, unsigned long set) } #endif +#define PROT_PTE_DEVICE L_PTE_PRESENT|L_PTE_YOUNG|L_PTE_DIRTY|L_PTE_WRITE +#define PROT_SECT_DEVICE PMD_TYPE_SECT|PMD_SECT_XN|PMD_SECT_AP_WRITE + static struct mem_type mem_types[] = { - [MT_DEVICE] = { - .prot_pte = L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_DIRTY | - L_PTE_WRITE, - .prot_l1 = PMD_TYPE_TABLE, - .prot_sect = PMD_TYPE_SECT | PMD_SECT_XN | PMD_SECT_UNCACHED | - PMD_SECT_AP_WRITE, - .domain = DOMAIN_IO, + [MT_DEVICE] = { /* Strongly ordered / ARMv6 shared device */ + .prot_pte = PROT_PTE_DEVICE, + .prot_l1 = PMD_TYPE_TABLE, + .prot_sect = PROT_SECT_DEVICE | PMD_SECT_UNCACHED, + .domain = DOMAIN_IO, + }, + [MT_DEVICE_NONSHARED] = { /* ARMv6 non-shared device */ + .prot_pte = PROT_PTE_DEVICE, + .prot_pte_ext = PTE_EXT_TEX(2), + .prot_l1 = PMD_TYPE_TABLE, + .prot_sect = PROT_SECT_DEVICE | PMD_SECT_TEX(2), + .domain = DOMAIN_IO, + }, + [MT_DEVICE_CACHED] = { /* ioremap_cached */ + .prot_pte = PROT_PTE_DEVICE | L_PTE_CACHEABLE | L_PTE_BUFFERABLE, + .prot_l1 = PMD_TYPE_TABLE, + .prot_sect = PROT_SECT_DEVICE | PMD_SECT_WB, + .domain = DOMAIN_IO, + }, + [MT_DEVICE_IXP2000] = { /* IXP2400 requires XCB=101 for on-chip I/O */ + .prot_pte = PROT_PTE_DEVICE, + .prot_l1 = PMD_TYPE_TABLE, + .prot_sect = PROT_SECT_DEVICE | PMD_SECT_BUFFERABLE | + PMD_SECT_TEX(1), + .domain = DOMAIN_IO, }, [MT_CACHECLEAN] = { .prot_sect = PMD_TYPE_SECT | PMD_SECT_XN, @@ -213,21 +234,6 @@ static struct mem_type mem_types[] = { .prot_sect = PMD_TYPE_SECT, .domain = DOMAIN_KERNEL, }, - [MT_IXP2000_DEVICE] = { /* IXP2400 requires XCB=101 for on-chip I/O */ - .prot_pte = L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_DIRTY | - L_PTE_WRITE, - .prot_l1 = PMD_TYPE_TABLE, - .prot_sect = PMD_TYPE_SECT | PMD_SECT_XN | PMD_SECT_UNCACHED | - PMD_SECT_AP_WRITE | PMD_SECT_BUFFERABLE | - PMD_SECT_TEX(1), - .domain = DOMAIN_IO, - }, - [MT_NONSHARED_DEVICE] = { - .prot_l1 = PMD_TYPE_TABLE, - .prot_sect = PMD_TYPE_SECT | PMD_SECT_XN | PMD_SECT_NONSHARED_DEV | - PMD_SECT_AP_WRITE, - .domain = DOMAIN_IO, - } }; const struct mem_type *get_mem_type(unsigned int type) diff --git a/include/asm-arm/mach/map.h b/include/asm-arm/mach/map.h index cef5364ed5..8afef40730 100644 --- a/include/asm-arm/mach/map.h +++ b/include/asm-arm/mach/map.h @@ -17,14 +17,18 @@ struct map_desc { }; #define MT_DEVICE 0 -#define MT_CACHECLEAN 1 -#define MT_MINICLEAN 2 -#define MT_LOW_VECTORS 3 -#define MT_HIGH_VECTORS 4 -#define MT_MEMORY 5 -#define MT_ROM 6 -#define MT_IXP2000_DEVICE 7 -#define MT_NONSHARED_DEVICE 8 +#define MT_DEVICE_NONSHARED 1 +#define MT_DEVICE_CACHED 2 +#define MT_DEVICE_IXP2000 3 +#define MT_CACHECLEAN 4 +#define MT_MINICLEAN 5 +#define MT_LOW_VECTORS 6 +#define MT_HIGH_VECTORS 7 +#define MT_MEMORY 8 +#define MT_ROM 9 + +#define MT_NONSHARED_DEVICE MT_DEVICE_NONSHARED +#define MT_IXP2000_DEVICE MT_DEVICE_IXP2000 #ifdef CONFIG_MMU extern void iotable_init(struct map_desc *, int);