Merge branch 'linus' into x86/uv

6 files changed, 63 insertions, 9 deletions

diff --git a/arch/sh/mm/Makefile_32 b/arch/sh/mm/Makefile_32
index 70e0906023cc..f066e76da204 100644
--- a/arch/sh/mm/Makefile_32
+++ b/arch/sh/mm/Makefile_32
@@ -2,7 +2,7 @@
 # Makefile for the Linux SuperH-specific parts of the memory manager.
 #
 
-obj-y                   := init.o extable_32.o consistent.o
+obj-y                   := init.o extable_32.o consistent.o mmap.o
 
 ifndef CONFIG_CACHE_OFF
 cache-$(CONFIG_CPU_SH2)         := cache-sh2.o
diff --git a/arch/sh/mm/Makefile_64 b/arch/sh/mm/Makefile_64
index 0d92a8a3ac9a..9481d0f54efd 100644
--- a/arch/sh/mm/Makefile_64
+++ b/arch/sh/mm/Makefile_64
@@ -2,7 +2,7 @@
 # Makefile for the Linux SuperH-specific parts of the memory manager.
 #
 
-obj-y                   := init.o consistent.o
+obj-y                   := init.o consistent.o mmap.o
 
 mmu-y                   := tlb-nommu.o pg-nommu.o extable_32.o
 mmu-$(CONFIG_MMU)       := fault_64.o ioremap_64.o tlbflush_64.o tlb-sh5.o \
diff --git a/arch/sh/mm/cache-sh2a.c b/arch/sh/mm/cache-sh2a.c
index 62c0c5f35120..24d86a794065 100644
--- a/arch/sh/mm/cache-sh2a.c
+++ b/arch/sh/mm/cache-sh2a.c
@@ -59,7 +59,7 @@ void __flush_purge_region(void *start, int size)
 
         for (v = begin; v < end; v+=L1_CACHE_BYTES) {
                 ctrl_outl((v & CACHE_PHYSADDR_MASK),
-                          CACHE_OC_ADDRESS_ARRAY | (v & 0x000003f0) | 0x00000008);
+                          CACHE_OC_ADDRESS_ARRAY | (v & 0x000007f0) | 0x00000008);
         }
         back_to_cached();
         local_irq_restore(flags);
@@ -82,14 +82,14 @@ void __flush_invalidate_region(void *start, int size)
         /* I-cache invalidate */
         for (v = begin; v < end; v+=L1_CACHE_BYTES) {
                 ctrl_outl((v & CACHE_PHYSADDR_MASK),
-                          CACHE_IC_ADDRESS_ARRAY | (v & 0x000003f0) | 0x00000008);
+                          CACHE_IC_ADDRESS_ARRAY | (v & 0x000007f0) | 0x00000008);
         }
 #else
         for (v = begin; v < end; v+=L1_CACHE_BYTES) {
                 ctrl_outl((v & CACHE_PHYSADDR_MASK),
-                          CACHE_IC_ADDRESS_ARRAY | (v & 0x000003f0) | 0x00000008);
+                          CACHE_IC_ADDRESS_ARRAY | (v & 0x000007f0) | 0x00000008);
                 ctrl_outl((v & CACHE_PHYSADDR_MASK),
-                          CACHE_OC_ADDRESS_ARRAY | (v & 0x000003f0) | 0x00000008);
+                          CACHE_OC_ADDRESS_ARRAY | (v & 0x000007f0) | 0x00000008);
         }
 #endif
         back_to_cached();
diff --git a/arch/sh/mm/init.c b/arch/sh/mm/init.c
index 4abf00031dae..6cbef8caeb56 100644
--- a/arch/sh/mm/init.c
+++ b/arch/sh/mm/init.c
@@ -137,6 +137,7 @@ void __init page_table_range_init(unsigned long start, unsigned long end,
 void __init paging_init(void)
 {
         unsigned long max_zone_pfns[MAX_NR_ZONES];
+        unsigned long vaddr;
         int nid;
 
         /* We don't need to map the kernel through the TLB, as
@@ -148,10 +149,15 @@ void __init paging_init(void)
          * check for a null value. */
         set_TTB(swapper_pg_dir);
 
-        /* Populate the relevant portions of swapper_pg_dir so that
+        /*
+         * Populate the relevant portions of swapper_pg_dir so that
          * we can use the fixmap entries without calling kmalloc.
-         * pte's will be filled in by __set_fixmap(). */
-        page_table_range_init(FIXADDR_START, FIXADDR_TOP, swapper_pg_dir);
+         * pte's will be filled in by __set_fixmap().
+         */
+        vaddr = __fix_to_virt(__end_of_fixed_addresses - 1) & PMD_MASK;
+        page_table_range_init(vaddr, 0, swapper_pg_dir);
+
+        kmap_coherent_init();
 
         memset(max_zone_pfns, 0, sizeof(max_zone_pfns));
 
diff --git a/arch/sh/mm/mmap.c b/arch/sh/mm/mmap.c
new file mode 100644
index 000000000000..8837d511710a
--- /dev/null
+++ b/arch/sh/mm/mmap.c
@@ -0,0 +1,31 @@
+/*
+ * arch/sh/mm/mmap.c
+ *
+ * Copyright (C) 2008  Paul Mundt
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+#include <linux/io.h>
+#include <linux/mm.h>
+#include <asm/page.h>
+
+/*
+ * You really shouldn't be using read() or write() on /dev/mem.  This
+ * might go away in the future.
+ */
+int valid_phys_addr_range(unsigned long addr, size_t count)
+{
+        if (addr < __MEMORY_START)
+                return 0;
+        if (addr + count > __pa(high_memory))
+                return 0;
+
+        return 1;
+}
+
+int valid_mmap_phys_addr_range(unsigned long pfn, size_t size)
+{
+        return 1;
+}
diff --git a/arch/sh/mm/pg-sh4.c b/arch/sh/mm/pg-sh4.c
index 38870e0fc182..2fe14da1f839 100644
--- a/arch/sh/mm/pg-sh4.c
+++ b/arch/sh/mm/pg-sh4.c
@@ -7,6 +7,7 @@
  * Released under the terms of the GNU GPL v2.0.
  */
 #include <linux/mm.h>
+#include <linux/init.h>
 #include <linux/mutex.h>
 #include <linux/fs.h>
 #include <linux/highmem.h>
@@ -16,6 +17,20 @@
 
 #define CACHE_ALIAS (current_cpu_data.dcache.alias_mask)
 
+#define kmap_get_fixmap_pte(vaddr)                                     \
+        pte_offset_kernel(pmd_offset(pud_offset(pgd_offset_k(vaddr), (vaddr)), (vaddr)), (vaddr))
+
+static pte_t *kmap_coherent_pte;
+
+void __init kmap_coherent_init(void)
+{
+        unsigned long vaddr;
+
+        /* cache the first coherent kmap pte */
+        vaddr = __fix_to_virt(FIX_CMAP_BEGIN);
+        kmap_coherent_pte = kmap_get_fixmap_pte(vaddr);
+}
+
 static inline void *kmap_coherent(struct page *page, unsigned long addr)
 {
         enum fixed_addresses idx;
@@ -34,6 +49,8 @@ static inline void *kmap_coherent(struct page *page, unsigned long addr)
 
         update_mmu_cache(NULL, vaddr, pte);
 
+        set_pte(kmap_coherent_pte - (FIX_CMAP_END - idx), pte);
+
         return (void *)vaddr;
 }