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Diffstat (limited to 'arch/m68k/mm/memory.c')
-rw-r--r--arch/m68k/mm/memory.c199
1 files changed, 13 insertions, 186 deletions
diff --git a/arch/m68k/mm/memory.c b/arch/m68k/mm/memory.c
index 1453a601372..51bc9d258ed 100644
--- a/arch/m68k/mm/memory.c
+++ b/arch/m68k/mm/memory.c
@@ -4,20 +4,19 @@
* Copyright (C) 1995 Hamish Macdonald
*/
-#include <linux/config.h>
+#include <linux/module.h>
#include <linux/mm.h>
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/types.h>
-#include <linux/slab.h>
#include <linux/init.h>
#include <linux/pagemap.h>
+#include <linux/gfp.h>
#include <asm/setup.h>
#include <asm/segment.h>
#include <asm/page.h>
#include <asm/pgalloc.h>
-#include <asm/system.h>
#include <asm/traps.h>
#include <asm/machdep.h>
@@ -54,7 +53,7 @@ void __init init_pointer_table(unsigned long ptable)
/* unreserve the page so it's possible to free that page */
PD_PAGE(dp)->flags &= ~(1 << PG_reserved);
- set_page_count(PD_PAGE(dp), 1);
+ init_page_count(PD_PAGE(dp));
return;
}
@@ -94,8 +93,7 @@ pmd_t *get_pointer_table (void)
PD_MARKBITS(dp) = mask & ~tmp;
if (!PD_MARKBITS(dp)) {
/* move to end of list */
- list_del(dp);
- list_add_tail(dp, &ptable_list);
+ list_move_tail(dp, &ptable_list);
}
return (pmd_t *) (page_address(PD_PAGE(dp)) + off);
}
@@ -123,73 +121,11 @@ int free_pointer_table (pmd_t *ptable)
* move this descriptor to the front of the list, since
* it has one or more free tables.
*/
- list_del(dp);
- list_add(dp, &ptable_list);
+ list_move(dp, &ptable_list);
}
return 0;
}
-#ifdef DEBUG_INVALID_PTOV
-int mm_inv_cnt = 5;
-#endif
-
-#ifndef CONFIG_SINGLE_MEMORY_CHUNK
-/*
- * The following two routines map from a physical address to a kernel
- * virtual address and vice versa.
- */
-unsigned long mm_vtop(unsigned long vaddr)
-{
- int i=0;
- unsigned long voff = (unsigned long)vaddr - PAGE_OFFSET;
-
- do {
- if (voff < m68k_memory[i].size) {
-#ifdef DEBUGPV
- printk ("VTOP(%p)=%lx\n", vaddr,
- m68k_memory[i].addr + voff);
-#endif
- return m68k_memory[i].addr + voff;
- }
- voff -= m68k_memory[i].size;
- } while (++i < m68k_num_memory);
-
- /* As a special case allow `__pa(high_memory)'. */
- if (voff == 0)
- return m68k_memory[i-1].addr + m68k_memory[i-1].size;
-
- return -1;
-}
-#endif
-
-#ifndef CONFIG_SINGLE_MEMORY_CHUNK
-unsigned long mm_ptov (unsigned long paddr)
-{
- int i = 0;
- unsigned long poff, voff = PAGE_OFFSET;
-
- do {
- poff = paddr - m68k_memory[i].addr;
- if (poff < m68k_memory[i].size) {
-#ifdef DEBUGPV
- printk ("PTOV(%lx)=%lx\n", paddr, poff + voff);
-#endif
- return poff + voff;
- }
- voff += m68k_memory[i].size;
- } while (++i < m68k_num_memory);
-
-#ifdef DEBUG_INVALID_PTOV
- if (mm_inv_cnt > 0) {
- mm_inv_cnt--;
- printk("Invalid use of phys_to_virt(0x%lx) at 0x%p!\n",
- paddr, __builtin_return_address(0));
- }
-#endif
- return -1;
-}
-#endif
-
/* invalidate page in both caches */
static inline void clear040(unsigned long paddr)
{
@@ -266,7 +202,9 @@ static inline void pushcl040(unsigned long paddr)
void cache_clear (unsigned long paddr, int len)
{
- if (CPU_IS_040_OR_060) {
+ if (CPU_IS_COLDFIRE) {
+ clear_cf_bcache(0, DCACHE_MAX_ADDR);
+ } else if (CPU_IS_040_OR_060) {
int tmp;
/*
@@ -301,6 +239,7 @@ void cache_clear (unsigned long paddr, int len)
mach_l2_flush(0);
#endif
}
+EXPORT_SYMBOL(cache_clear);
/*
@@ -312,7 +251,9 @@ void cache_clear (unsigned long paddr, int len)
void cache_push (unsigned long paddr, int len)
{
- if (CPU_IS_040_OR_060) {
+ if (CPU_IS_COLDFIRE) {
+ flush_cf_bcache(0, DCACHE_MAX_ADDR);
+ } else if (CPU_IS_040_OR_060) {
int tmp = PAGE_SIZE;
/*
@@ -353,119 +294,5 @@ void cache_push (unsigned long paddr, int len)
mach_l2_flush(1);
#endif
}
+EXPORT_SYMBOL(cache_push);
-static unsigned long virt_to_phys_slow(unsigned long vaddr)
-{
- if (CPU_IS_060) {
- mm_segment_t fs = get_fs();
- unsigned long paddr;
-
- set_fs(get_ds());
-
- /* The PLPAR instruction causes an access error if the translation
- * is not possible. To catch this we use the same exception mechanism
- * as for user space accesses in <asm/uaccess.h>. */
- asm volatile (".chip 68060\n"
- "1: plpar (%0)\n"
- ".chip 68k\n"
- "2:\n"
- ".section .fixup,\"ax\"\n"
- " .even\n"
- "3: sub.l %0,%0\n"
- " jra 2b\n"
- ".previous\n"
- ".section __ex_table,\"a\"\n"
- " .align 4\n"
- " .long 1b,3b\n"
- ".previous"
- : "=a" (paddr)
- : "0" (vaddr));
- set_fs(fs);
- return paddr;
- } else if (CPU_IS_040) {
- mm_segment_t fs = get_fs();
- unsigned long mmusr;
-
- set_fs(get_ds());
-
- asm volatile (".chip 68040\n\t"
- "ptestr (%1)\n\t"
- "movec %%mmusr, %0\n\t"
- ".chip 68k"
- : "=r" (mmusr)
- : "a" (vaddr));
- set_fs(fs);
-
- if (mmusr & MMU_R_040)
- return (mmusr & PAGE_MASK) | (vaddr & ~PAGE_MASK);
- } else {
- unsigned short mmusr;
- unsigned long *descaddr;
-
- asm volatile ("ptestr #5,%2@,#7,%0\n\t"
- "pmove %%psr,%1@"
- : "=a&" (descaddr)
- : "a" (&mmusr), "a" (vaddr));
- if (mmusr & (MMU_I|MMU_B|MMU_L))
- return 0;
- descaddr = phys_to_virt((unsigned long)descaddr);
- switch (mmusr & MMU_NUM) {
- case 1:
- return (*descaddr & 0xfe000000) | (vaddr & 0x01ffffff);
- case 2:
- return (*descaddr & 0xfffc0000) | (vaddr & 0x0003ffff);
- case 3:
- return (*descaddr & PAGE_MASK) | (vaddr & ~PAGE_MASK);
- }
- }
- return 0;
-}
-
-/* Push n pages at kernel virtual address and clear the icache */
-/* RZ: use cpush %bc instead of cpush %dc, cinv %ic */
-void flush_icache_range(unsigned long address, unsigned long endaddr)
-{
- if (CPU_IS_040_OR_060) {
- address &= PAGE_MASK;
-
- if (address >= PAGE_OFFSET && address < (unsigned long)high_memory) {
- do {
- asm volatile ("nop\n\t"
- ".chip 68040\n\t"
- "cpushp %%bc,(%0)\n\t"
- ".chip 68k"
- : : "a" (virt_to_phys((void *)address)));
- address += PAGE_SIZE;
- } while (address < endaddr);
- } else {
- do {
- asm volatile ("nop\n\t"
- ".chip 68040\n\t"
- "cpushp %%bc,(%0)\n\t"
- ".chip 68k"
- : : "a" (virt_to_phys_slow(address)));
- address += PAGE_SIZE;
- } while (address < endaddr);
- }
- } else {
- unsigned long tmp;
- asm volatile ("movec %%cacr,%0\n\t"
- "orw %1,%0\n\t"
- "movec %0,%%cacr"
- : "=&d" (tmp)
- : "di" (FLUSH_I));
- }
-}
-
-
-#ifndef CONFIG_SINGLE_MEMORY_CHUNK
-int mm_end_of_chunk (unsigned long addr, int len)
-{
- int i;
-
- for (i = 0; i < m68k_num_memory; i++)
- if (m68k_memory[i].addr + m68k_memory[i].size == addr + len)
- return 1;
- return 0;
-}
-#endif
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