[ARM] Remove MT_DEVICE_IXP2000 and associated definitions

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>

10 files changed, 26 insertions, 49 deletions

diff --git a/arch/arm/include/asm/io.h b/arch/arm/include/asm/io.h
index 71934856fc22..a8094451be57 100644
--- a/arch/arm/include/asm/io.h
+++ b/arch/arm/include/asm/io.h
@@ -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
  */
 
diff --git a/arch/arm/include/asm/mach/map.h b/arch/arm/include/asm/mach/map.h
index 9eb936e49cc3..72586cd4372e 100644
--- a/arch/arm/include/asm/mach/map.h
+++ b/arch/arm/include/asm/mach/map.h
@@ -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);
diff --git a/arch/arm/include/asm/pgtable.h b/arch/arm/include/asm/pgtable.h
index dfeff814a942..e5054b026c24 100644
--- a/arch/arm/include/asm/pgtable.h
+++ b/arch/arm/include/asm/pgtable.h
@@ -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)
diff --git a/arch/arm/mach-ixp2000/core.c b/arch/arm/mach-ixp2000/core.c
index a6a4f93085fd..628063ca31e6 100644
--- a/arch/arm/mach-ixp2000/core.c
+++ b/arch/arm/mach-ixp2000/core.c
@@ -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.  */
diff --git a/arch/arm/mach-ixp2000/enp2611.c b/arch/arm/mach-ixp2000/enp2611.c
index c62ed655c1a7..8bb184dbc187 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_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,
         }
 };
 
diff --git a/arch/arm/mach-ixp2000/include/mach/ixp2000-regs.h b/arch/arm/mach-ixp2000/include/mach/ixp2000-regs.h
index 19d80379a3e3..822f63f2f4a2 100644
--- a/arch/arm/mach-ixp2000/include/mach/ixp2000-regs.h
+++ b/arch/arm/mach-ixp2000/include/mach/ixp2000-regs.h
@@ -41,13 +41,7 @@
  * 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.
  *
diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
index 685dc1bf0083..06ad914928cf 100644
--- a/arch/arm/mm/mmu.c
+++ b/arch/arm/mm/mmu.c
@@ -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,
diff --git a/arch/arm/mm/proc-macros.S b/arch/arm/mm/proc-macros.S
index 64e593020857..54b1f721dec8 100644
--- a/arch/arm/mm/proc-macros.S
+++ b/arch/arm/mm/proc-macros.S
@@ -119,7 +119,7 @@
         .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
diff --git a/arch/arm/mm/proc-xsc3.S b/arch/arm/mm/proc-xsc3.S
index 22ecef533a84..ecdd944bc2b9 100644
--- a/arch/arm/mm/proc-xsc3.S
+++ b/arch/arm/mm/proc-xsc3.S
@@ -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
 
diff --git a/arch/arm/mm/proc-xscale.S b/arch/arm/mm/proc-xscale.S
index 534b4be86ae5..01adbd9462f8 100644
--- a/arch/arm/mm/proc-xscale.S
+++ b/arch/arm/mm/proc-xscale.S
@@ -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