* Modifications by Paul Mackerras (PowerMac) (paulus@cs.anu.edu.au)
* and Cort Dougan (PReP) (cort@cs.nmt.edu)
* Copyright (C) 1996 Paul Mackerras
- * Amiga/APUS changes by Jesper Skov (jskov@cygnus.co.uk).
*
* Derived from "arch/i386/mm/init.c"
* Copyright (C) 1991, 1992, 1993, 1994 Linus Torvalds
*
*/
-#include <linux/config.h>
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/init.h>
#include <linux/highmem.h>
+#include <linux/lmb.h>
#include <asm/prom.h>
#include <asm/mmu.h>
#include <asm/machdep.h>
-#include <asm/lmb.h>
#include "mmu_decl.h"
-PTE *Hash, *Hash_end;
+struct hash_pte *Hash, *Hash_end;
unsigned long Hash_size, Hash_mask;
unsigned long _SDR1;
-union ubat { /* BAT register values to be loaded */
- BAT bat;
- u32 word[2];
-} BATS[8][2]; /* 8 pairs of IBAT, DBAT */
+struct ppc_bat BATS[8][2]; /* 8 pairs of IBAT, DBAT */
struct batrange { /* stores address ranges mapped by BATs */
unsigned long start;
unsigned long limit;
- unsigned long phys;
+ phys_addr_t phys;
} bat_addrs[8];
/*
* Return PA for this VA if it is mapped by a BAT, or 0
*/
-unsigned long v_mapped_by_bats(unsigned long va)
+phys_addr_t v_mapped_by_bats(unsigned long va)
{
int b;
for (b = 0; b < 4; ++b)
/*
* Return VA for a given PA or 0 if not mapped
*/
-unsigned long p_mapped_by_bats(unsigned long pa)
+unsigned long p_mapped_by_bats(phys_addr_t pa)
{
int b;
for (b = 0; b < 4; ++b)
#else
unsigned long tot, bl, done;
unsigned long max_size = (256<<20);
- unsigned long align;
- if (__map_without_bats)
+ if (__map_without_bats) {
+ printk(KERN_DEBUG "RAM mapped without BATs\n");
return 0;
+ }
/* Set up BAT2 and if necessary BAT3 to cover RAM. */
/* Make sure we don't map a block larger than the
smallest alignment of the physical address. */
- /* alignment of PPC_MEMSTART */
- align = ~(PPC_MEMSTART-1) & PPC_MEMSTART;
- /* set BAT block size to MIN(max_size, align) */
- if (align && align < max_size)
- max_size = align;
-
tot = total_lowmem;
for (bl = 128<<10; bl < max_size; bl <<= 1) {
if (bl * 2 > tot)
break;
}
- setbat(2, KERNELBASE, PPC_MEMSTART, bl, _PAGE_RAM);
- done = (unsigned long)bat_addrs[2].limit - KERNELBASE + 1;
+ setbat(2, PAGE_OFFSET, 0, bl, _PAGE_RAM);
+ done = (unsigned long)bat_addrs[2].limit - PAGE_OFFSET + 1;
if ((done < tot) && !bat_addrs[3].limit) {
/* use BAT3 to cover a bit more */
tot -= done;
for (bl = 128<<10; bl < max_size; bl <<= 1)
if (bl * 2 > tot)
break;
- setbat(3, KERNELBASE+done, PPC_MEMSTART+done, bl, _PAGE_RAM);
- done = (unsigned long)bat_addrs[3].limit - KERNELBASE + 1;
+ setbat(3, PAGE_OFFSET+done, done, bl, _PAGE_RAM);
+ done = (unsigned long)bat_addrs[3].limit - PAGE_OFFSET + 1;
}
return done;
* The parameters are not checked; in particular size must be a power
* of 2 between 128k and 256M.
*/
-void __init setbat(int index, unsigned long virt, unsigned long phys,
+void __init setbat(int index, unsigned long virt, phys_addr_t phys,
unsigned int size, int flags)
{
unsigned int bl;
int wimgxpp;
- union ubat *bat = BATS[index];
+ struct ppc_bat *bat = BATS[index];
if (((flags & _PAGE_NO_CACHE) == 0) &&
cpu_has_feature(CPU_FTR_NEED_COHERENT))
wimgxpp = flags & (_PAGE_WRITETHRU | _PAGE_NO_CACHE
| _PAGE_COHERENT | _PAGE_GUARDED);
wimgxpp |= (flags & _PAGE_RW)? BPP_RW: BPP_RX;
- bat[1].word[0] = virt | (bl << 2) | 2; /* Vs=1, Vp=0 */
- bat[1].word[1] = phys | wimgxpp;
+ bat[1].batu = virt | (bl << 2) | 2; /* Vs=1, Vp=0 */
+ bat[1].batl = BAT_PHYS_ADDR(phys) | wimgxpp;
#ifndef CONFIG_KGDB /* want user access for breakpoints */
if (flags & _PAGE_USER)
#endif
- bat[1].bat.batu.vp = 1;
+ bat[1].batu |= 1; /* Vp = 1 */
if (flags & _PAGE_GUARDED) {
/* G bit must be zero in IBATs */
- bat[0].word[0] = bat[0].word[1] = 0;
+ bat[0].batu = bat[0].batl = 0;
} else {
/* make IBAT same as DBAT */
bat[0] = bat[1];
| _PAGE_COHERENT);
wimgxpp |= (flags & _PAGE_RW)?
((flags & _PAGE_USER)? PP_RWRW: PP_RWXX): PP_RXRX;
- bat->word[0] = virt | wimgxpp | 4; /* Ks=0, Ku=1 */
- bat->word[1] = phys | bl | 0x40; /* V=1 */
+ bat->batu = virt | wimgxpp | 4; /* Ks=0, Ku=1 */
+ bat->batl = phys | bl | 0x40; /* V=1 */
}
bat_addrs[index].start = virt;
if (Hash == 0)
return;
- pmd = pmd_offset(pgd_offset(mm, ea), ea);
+ pmd = pmd_offset(pud_offset(pgd_offset(mm, ea), ea), ea);
if (!pmd_none(*pmd))
add_hash_page(mm->context.id, ea, pmd_val(*pmd));
}
extern unsigned int hash_page[];
extern unsigned int flush_hash_patch_A[], flush_hash_patch_B[];
- if (!cpu_has_feature(CPU_FTR_HPTE_TABLE)) {
+ if (!mmu_has_feature(MMU_FTR_HPTE_TABLE)) {
/*
* Put a blr (procedure return) instruction at the
* start of hash_page, since we can still get DSI
*/
if ( ppc_md.progress ) ppc_md.progress("hash:find piece", 0x322);
Hash = __va(lmb_alloc_base(Hash_size, Hash_size,
- __initial_memory_limit));
+ __initial_memory_limit_addr));
cacheable_memzero(Hash, Hash_size);
_SDR1 = __pa(Hash) | SDR1_LOW_BITS;
- Hash_end = (PTE *) ((unsigned long)Hash + Hash_size);
+ Hash_end = (struct hash_pte *) ((unsigned long)Hash + Hash_size);
- printk("Total memory = %ldMB; using %ldkB for hash table (at %p)\n",
- total_memory >> 20, Hash_size >> 10, Hash);
+ printk("Total memory = %lldMB; using %ldkB for hash table (at %p)\n",
+ (unsigned long long)(total_memory >> 20), Hash_size >> 10, Hash);
/*
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff