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yaml
---
r: 37717
b: refs/heads/master
c: e32cbc3
h: refs/heads/master
i:
  37715: ca75520
v: v3
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Haavard Skinnemoen authored and Linus Torvalds committed Oct 1, 2006
1 parent 75a59c6 commit 4c23539
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Showing 2 changed files with 4 additions and 86 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: 86c8eb360daa6286e3f9bd32a22e5d9c69e86dd1
refs/heads/master: e32cbc3df44838cc93a679aca3561f75b4964c57
88 changes: 3 additions & 85 deletions trunk/arch/cris/mm/ioremap.c
Original file line number Diff line number Diff line change
Expand Up @@ -10,93 +10,10 @@
*/

#include <linux/vmalloc.h>
#include <asm/io.h>
#include <linux/io.h>
#include <asm/pgalloc.h>
#include <asm/cacheflush.h>
#include <asm/tlbflush.h>
#include <asm/arch/memmap.h>

static inline void remap_area_pte(pte_t * pte, unsigned long address, unsigned long size,
unsigned long phys_addr, pgprot_t prot)
{
unsigned long end;

address &= ~PMD_MASK;
end = address + size;
if (end > PMD_SIZE)
end = PMD_SIZE;
if (address >= end)
BUG();
do {
if (!pte_none(*pte)) {
printk("remap_area_pte: page already exists\n");
BUG();
}
set_pte(pte, mk_pte_phys(phys_addr, prot));
address += PAGE_SIZE;
phys_addr += PAGE_SIZE;
pte++;
} while (address && (address < end));
}

static inline int remap_area_pmd(pmd_t * pmd, unsigned long address, unsigned long size,
unsigned long phys_addr, pgprot_t prot)
{
unsigned long end;

address &= ~PGDIR_MASK;
end = address + size;
if (end > PGDIR_SIZE)
end = PGDIR_SIZE;
phys_addr -= address;
if (address >= end)
BUG();
do {
pte_t * pte = pte_alloc_kernel(pmd, address);
if (!pte)
return -ENOMEM;
remap_area_pte(pte, address, end - address, address + phys_addr, prot);
address = (address + PMD_SIZE) & PMD_MASK;
pmd++;
} while (address && (address < end));
return 0;
}

static int remap_area_pages(unsigned long address, unsigned long phys_addr,
unsigned long size, pgprot_t prot)
{
int error;
pgd_t * dir;
unsigned long end = address + size;

phys_addr -= address;
dir = pgd_offset(&init_mm, address);
flush_cache_all();
if (address >= end)
BUG();
do {
pud_t *pud;
pmd_t *pmd;

error = -ENOMEM;
pud = pud_alloc(&init_mm, dir, address);
if (!pud)
break;
pmd = pmd_alloc(&init_mm, pud, address);

if (!pmd)
break;
if (remap_area_pmd(pmd, address, end - address,
phys_addr + address, prot))
break;
error = 0;
address = (address + PGDIR_SIZE) & PGDIR_MASK;
dir++;
} while (address && (address < end));
flush_tlb_all();
return error;
}

/*
* Generic mapping function (not visible outside):
*/
Expand Down Expand Up @@ -135,7 +52,8 @@ void __iomem * __ioremap_prot(unsigned long phys_addr, unsigned long size, pgpro
if (!area)
return NULL;
addr = (void __iomem *)area->addr;
if (remap_area_pages((unsigned long) addr, phys_addr, size, prot)) {
if (ioremap_page_range((unsigned long)addr, (unsigned long)addr + size,
phys_addr, prot)) {
vfree((void __force *)addr);
return NULL;
}
Expand Down

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