[ARM] Remove MT_DEVICE_IXP2000 and associated definitions
Russell King [Sun, 7 Sep 2008 11:42:51 +0000 (12:42 +0100)]
As of the previous commit, MT_DEVICE_IXP2000 encodes to the same
PTE bit encoding as MT_DEVICE, so it's now redundant.  Convert
MT_DEVICE_IXP2000 to use MT_DEVICE instead, and remove its aliases.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/include/asm/io.h
arch/arm/include/asm/mach/map.h
arch/arm/include/asm/pgtable.h
arch/arm/mach-ixp2000/core.c
arch/arm/mach-ixp2000/enp2611.c
arch/arm/mach-ixp2000/include/mach/ixp2000-regs.h
arch/arm/mm/mmu.c
arch/arm/mm/proc-macros.S
arch/arm/mm/proc-xsc3.S
arch/arm/mm/proc-xscale.S

index 7193485..a809445 100644 (file)
@@ -60,10 +60,9 @@ extern void __raw_readsl(const void __iomem *addr, void *data, int longlen);
 #define MT_DEVICE              0
 #define MT_DEVICE_NONSHARED    1
 #define MT_DEVICE_CACHED       2
-#define MT_DEVICE_IXP2000      3
-#define MT_DEVICE_WC           4
+#define MT_DEVICE_WC           3
 /*
- * types 5 onwards can be found in asm/mach/map.h and are undefined
+ * types 4 onwards can be found in asm/mach/map.h and are undefined
  * for ioremap
  */
 
index 9eb936e..72586cd 100644 (file)
@@ -18,16 +18,15 @@ struct map_desc {
        unsigned int type;
 };
 
-/* types 0-4 are defined in asm/io.h */
-#define MT_CACHECLEAN          5
-#define MT_MINICLEAN           6
-#define MT_LOW_VECTORS         7
-#define MT_HIGH_VECTORS                8
-#define MT_MEMORY              9
-#define MT_ROM                 10
+/* types 0-3 are defined in asm/io.h */
+#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);
index dfeff81..e5054b0 100644 (file)
@@ -184,7 +184,6 @@ extern void __pgd_error(const char *file, int line, unsigned long val);
 #define L_PTE_MT_WRITEALLOC    (0x07 << 2)     /* 0111 */
 #define L_PTE_MT_DEV_SHARED    (0x04 << 2)     /* 0100 */
 #define L_PTE_MT_DEV_NONSHARED (0x0c << 2)     /* 1100 */
-#define L_PTE_MT_DEV_IXP2000   (0x0d << 2)     /* 1101 */
 #define L_PTE_MT_DEV_WC                (0x09 << 2)     /* 1001 */
 #define L_PTE_MT_DEV_CACHED    (0x0b << 2)     /* 1011 */
 #define L_PTE_MT_MASK          (0x0f << 2)
index a6a4f93..628063c 100644 (file)
@@ -84,64 +84,57 @@ 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_IXP2000,
+               .type           = MT_DEVICE,
        }, {
                .virtual        = IXP2000_INTCTL_VIRT_BASE,
                .pfn            = __phys_to_pfn(IXP2000_INTCTL_PHYS_BASE),
                .length         = IXP2000_INTCTL_SIZE,
-               .type           = MT_DEVICE_IXP2000,
+               .type           = MT_DEVICE,
        }, {
                .virtual        = IXP2000_PCI_CREG_VIRT_BASE,
                .pfn            = __phys_to_pfn(IXP2000_PCI_CREG_PHYS_BASE),
                .length         = IXP2000_PCI_CREG_SIZE,
-               .type           = MT_DEVICE_IXP2000,
+               .type           = MT_DEVICE,
        }, {
                .virtual        = IXP2000_PCI_CSR_VIRT_BASE,
                .pfn            = __phys_to_pfn(IXP2000_PCI_CSR_PHYS_BASE),
                .length         = IXP2000_PCI_CSR_SIZE,
-               .type           = MT_DEVICE_IXP2000,
+               .type           = MT_DEVICE,
        }, {
                .virtual        = IXP2000_MSF_VIRT_BASE,
                .pfn            = __phys_to_pfn(IXP2000_MSF_PHYS_BASE),
                .length         = IXP2000_MSF_SIZE,
-               .type           = MT_DEVICE_IXP2000,
+               .type           = MT_DEVICE,
        }, {
                .virtual        = IXP2000_SCRATCH_RING_VIRT_BASE,
                .pfn            = __phys_to_pfn(IXP2000_SCRATCH_RING_PHYS_BASE),
                .length         = IXP2000_SCRATCH_RING_SIZE,
-               .type           = MT_DEVICE_IXP2000,
+               .type           = MT_DEVICE,
        }, {
                .virtual        = IXP2000_SRAM0_VIRT_BASE,
                .pfn            = __phys_to_pfn(IXP2000_SRAM0_PHYS_BASE),
                .length         = IXP2000_SRAM0_SIZE,
-               .type           = MT_DEVICE_IXP2000,
+               .type           = MT_DEVICE,
        }, {
                .virtual        = IXP2000_PCI_IO_VIRT_BASE,
                .pfn            = __phys_to_pfn(IXP2000_PCI_IO_PHYS_BASE),
                .length         = IXP2000_PCI_IO_SIZE,
-               .type           = MT_DEVICE_IXP2000,
+               .type           = MT_DEVICE,
        }, {
                .virtual        = IXP2000_PCI_CFG0_VIRT_BASE,
                .pfn            = __phys_to_pfn(IXP2000_PCI_CFG0_PHYS_BASE),
                .length         = IXP2000_PCI_CFG0_SIZE,
-               .type           = MT_DEVICE_IXP2000,
+               .type           = MT_DEVICE,
        }, {
                .virtual        = IXP2000_PCI_CFG1_VIRT_BASE,
                .pfn            = __phys_to_pfn(IXP2000_PCI_CFG1_PHYS_BASE),
                .length         = IXP2000_PCI_CFG1_SIZE,
-               .type           = MT_DEVICE_IXP2000,
+               .type           = MT_DEVICE,
        }
 };
 
 void __init ixp2000_map_io(void)
 {
-       /*
-        * 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
-        * XCB=101 for all IXP2000s.
-        */
        iotable_init(ixp2000_io_desc, ARRAY_SIZE(ixp2000_io_desc));
 
        /* Set slowport to 8-bit mode.  */
index c62ed65..8bb184d 100644 (file)
@@ -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_DEVICE_IXP2000,
+               .type           = MT_DEVICE,
        }, {
                .virtual        = ENP2611_PM3386_0_VIRT_BASE,
                .pfn            = __phys_to_pfn(ENP2611_PM3386_0_PHYS_BASE),
                .length         = ENP2611_PM3386_0_SIZE,
-               .type           = MT_DEVICE_IXP2000,
+               .type           = MT_DEVICE,
        }, {
                .virtual        = ENP2611_PM3386_1_VIRT_BASE,
                .pfn            = __phys_to_pfn(ENP2611_PM3386_1_PHYS_BASE),
                .length         = ENP2611_PM3386_1_SIZE,
-               .type           = MT_DEVICE_IXP2000,
+               .type           = MT_DEVICE,
        }
 };
 
index 19d8037..822f63f 100644 (file)
  * Most of the registers are clumped in 4K regions spread throughout
  * the 0xc0000000 -> 0xc0100000 address range, but we just map in
  * the whole range using a single 1 MB section instead of small
- * 4K pages.  This has two advantages for us:
- *
- * 1) We use only one TLB entry for large number of on-chip I/O devices.
- *
- * 2) We can easily set the Section attributes to XCB=101 on the IXP2400
- *    as required per erratum #66.  We accomplish this by using a
- *    new MT_IXP2000_DEVICE memory type with the bits set as required.
+ * 4K pages.
  *
  * CAP stands for CSR Access Proxy.
  *
index 685dc1b..06ad914 100644 (file)
@@ -204,13 +204,6 @@ static struct mem_type mem_types[] = {
                .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 | L_PTE_MT_DEV_IXP2000,
-               .prot_l1        = PMD_TYPE_TABLE,
-               .prot_sect      = PROT_SECT_DEVICE | PMD_SECT_BUFFERABLE |
-                                 PMD_SECT_TEX(1),
-               .domain         = DOMAIN_IO,
-       },
        [MT_DEVICE_WC] = {      /* ioremap_wc */
                .prot_pte       = PROT_PTE_DEVICE | L_PTE_MT_DEV_WC,
                .prot_l1        = PMD_TYPE_TABLE,
index 64e5930..54b1f72 100644 (file)
        .long   0x00                                            @ unused
        .long   PTE_CACHEABLE | PTE_BUFFERABLE                  @ L_PTE_MT_DEV_CACHED
        .long   PTE_EXT_TEX(2)                                  @ L_PTE_MT_DEV_NONSHARED
-       .long   0x00                                            @ L_PTE_MT_DEV_IXP2000
+       .long   0x00                                            @ unused
        .long   0x00                                            @ unused
        .long   0x00                                            @ unused
        .endm
index 22ecef5..ecdd944 100644 (file)
@@ -360,7 +360,7 @@ cpu_xsc3_mt_table:
        .long   0x00                                            @ unused
        .long   PTE_CACHEABLE | PTE_BUFFERABLE                  @ L_PTE_MT_DEV_CACHED
        .long   PTE_EXT_TEX(2)                                  @ L_PTE_MT_DEV_NONSHARED
-       .long   0x00                                            @ L_PTE_MT_DEV_IXP2000 (not present)
+       .long   0x00                                            @ unused
        .long   0x00                                            @ unused
        .long   0x00                                            @ unused
 
index 534b4be..01adbd9 100644 (file)
@@ -443,7 +443,7 @@ cpu_xscale_mt_table:
        .long   0x00                                            @ unused
        .long   PTE_CACHEABLE | PTE_BUFFERABLE                  @ L_PTE_MT_DEV_CACHED
        .long   0x00                                            @ L_PTE_MT_DEV_NONSHARED
-       .long   PTE_EXT_TEX(1) | PTE_BUFFERABLE                 @ L_PTE_MT_DEV_IXP2000
+       .long   0x00                                            @ unused
        .long   0x00                                            @ unused
        .long   0x00                                            @ unused