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Diffstat (limited to 'arch/m68k/mm/sun3mmu.c')
-rw-r--r--arch/m68k/mm/sun3mmu.c43
1 files changed, 26 insertions, 17 deletions
diff --git a/arch/m68k/mm/sun3mmu.c b/arch/m68k/mm/sun3mmu.c
index eca1c46bb90a..1ecf6bdd08bf 100644
--- a/arch/m68k/mm/sun3mmu.c
+++ b/arch/m68k/mm/sun3mmu.c
@@ -21,11 +21,10 @@
#include <asm/setup.h>
#include <linux/uaccess.h>
#include <asm/page.h>
-#include <asm/pgtable.h>
#include <asm/machdep.h>
#include <asm/io.h>
-extern void mmu_emu_init (unsigned long bootmem_end);
+#include "../sun3/sun3.h"
const char bad_pmd_string[] = "Bad pmd in pte_alloc: %08lx\n";
@@ -42,13 +41,10 @@ void __init paging_init(void)
unsigned long address;
unsigned long next_pgtable;
unsigned long bootmem_end;
- unsigned long zones_size[MAX_NR_ZONES] = { 0, };
+ unsigned long max_zone_pfn[MAX_NR_ZONES] = { 0, };
unsigned long size;
- empty_zero_page = memblock_alloc(PAGE_SIZE, PAGE_SIZE);
- if (!empty_zero_page)
- panic("%s: Failed to allocate %lu bytes align=0x%lx\n",
- __func__, PAGE_SIZE, PAGE_SIZE);
+ empty_zero_page = memblock_alloc_or_panic(PAGE_SIZE, PAGE_SIZE);
address = PAGE_OFFSET;
pg_dir = swapper_pg_dir;
@@ -58,10 +54,7 @@ void __init paging_init(void)
size = num_pages * sizeof(pte_t);
size = (size + PAGE_SIZE) & ~(PAGE_SIZE-1);
- next_pgtable = (unsigned long)memblock_alloc(size, PAGE_SIZE);
- if (!next_pgtable)
- panic("%s: Failed to allocate %lu bytes align=0x%lx\n",
- __func__, size, PAGE_SIZE);
+ next_pgtable = (unsigned long)memblock_alloc_or_panic(size, PAGE_SIZE);
bootmem_end = (next_pgtable + size + PAGE_SIZE) & PAGE_MASK;
/* Map whole memory from PAGE_OFFSET (0x0E000000) */
@@ -76,7 +69,7 @@ void __init paging_init(void)
/* now change pg_table to kernel virtual addresses */
pg_table = (pte_t *) __va ((unsigned long) pg_table);
for (i=0; i<PTRS_PER_PTE; ++i, ++pg_table) {
- pte_t pte = pfn_pte(virt_to_pfn(address), PAGE_INIT);
+ pte_t pte = pfn_pte(virt_to_pfn((void *)address), PAGE_INIT);
if (address >= (unsigned long)high_memory)
pte_val (pte) = 0;
set_pte (pg_table, pte);
@@ -89,14 +82,30 @@ void __init paging_init(void)
current->mm = NULL;
/* memory sizing is a hack stolen from motorola.c.. hope it works for us */
- zones_size[ZONE_DMA] = ((unsigned long)high_memory - PAGE_OFFSET) >> PAGE_SHIFT;
+ max_zone_pfn[ZONE_DMA] = ((unsigned long)high_memory) >> PAGE_SHIFT;
/* I really wish I knew why the following change made things better... -- Sam */
-/* free_area_init(zones_size); */
- free_area_init_node(0, zones_size,
- (__pa(PAGE_OFFSET) >> PAGE_SHIFT) + 1, NULL);
+ free_area_init(max_zone_pfn);
}
-
+static const pgprot_t protection_map[16] = {
+ [VM_NONE] = PAGE_NONE,
+ [VM_READ] = PAGE_READONLY,
+ [VM_WRITE] = PAGE_COPY,
+ [VM_WRITE | VM_READ] = PAGE_COPY,
+ [VM_EXEC] = PAGE_READONLY,
+ [VM_EXEC | VM_READ] = PAGE_READONLY,
+ [VM_EXEC | VM_WRITE] = PAGE_COPY,
+ [VM_EXEC | VM_WRITE | VM_READ] = PAGE_COPY,
+ [VM_SHARED] = PAGE_NONE,
+ [VM_SHARED | VM_READ] = PAGE_READONLY,
+ [VM_SHARED | VM_WRITE] = PAGE_SHARED,
+ [VM_SHARED | VM_WRITE | VM_READ] = PAGE_SHARED,
+ [VM_SHARED | VM_EXEC] = PAGE_READONLY,
+ [VM_SHARED | VM_EXEC | VM_READ] = PAGE_READONLY,
+ [VM_SHARED | VM_EXEC | VM_WRITE] = PAGE_SHARED,
+ [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = PAGE_SHARED
+};
+DECLARE_VM_GET_PAGE_PROT