* 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>
/* unreserve the page so it's possible to free that page */
PD_PAGE(dp)->flags &= ~(1 << PG_reserved);
- atomic_set(&PD_PAGE(dp)->count, 1);
+ init_page_count(PD_PAGE(dp));
return;
}
ptable_desc *new;
if (!(page = (void *)get_zeroed_page(GFP_KERNEL)))
- return 0;
+ return NULL;
flush_tlb_kernel_page(page);
nocache_page(page);
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);
}
* 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;
}
-#if DEBUG_INVALID_PTOV
+#ifdef DEBUG_INVALID_PTOV
int mm_inv_cnt = 5;
#endif
return -1;
}
-#endif
+EXPORT_SYMBOL(mm_vtop);
-#ifndef CONFIG_SINGLE_MEMORY_CHUNK
unsigned long mm_ptov (unsigned long paddr)
{
int i = 0;
voff += m68k_memory[i].size;
} while (++i < m68k_num_memory);
-#if DEBUG_INVALID_PTOV
+#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",
#endif
return -1;
}
+EXPORT_SYMBOL(mm_ptov);
#endif
/* invalidate page in both caches */
: "d0");
#ifdef CONFIG_M68K_L2_CACHE
if(mach_l2_flush)
- mach_l2_flush(0);
+ mach_l2_flush(0);
#endif
}
+EXPORT_SYMBOL(cache_clear);
/*
: "d0");
#ifdef CONFIG_M68K_L2_CACHE
if(mach_l2_flush)
- mach_l2_flush(1);
+ mach_l2_flush(1);
#endif
}
-
-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));
- }
-}
-
+EXPORT_SYMBOL(cache_push);
#ifndef CONFIG_SINGLE_MEMORY_CHUNK
int mm_end_of_chunk (unsigned long addr, int len)
return 1;
return 0;
}
+EXPORT_SYMBOL(mm_end_of_chunk);
#endif
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