Skip to content

Commit

Permalink
---
Browse files Browse the repository at this point in the history
yaml
---
r: 88891
b: refs/heads/master
c: 3a96ce8
h: refs/heads/master
i:
  88889: 072278e
  88887: f07d626
v: v3
  • Loading branch information
venkatesh.pallipadi@intel.com authored and Ingo Molnar committed Apr 17, 2008
1 parent 4a1929e commit f1d3f79
Show file tree
Hide file tree
Showing 3 changed files with 16 additions and 18 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: 55c626820a82b25d7fceca702e9422037ae80626
refs/heads/master: 3a96ce8cac808fbed5493adc5c605bced28e2ca1
29 changes: 12 additions & 17 deletions trunk/arch/x86/mm/ioremap.c
Original file line number Diff line number Diff line change
Expand Up @@ -20,11 +20,6 @@
#include <asm/tlbflush.h>
#include <asm/pgalloc.h>

enum ioremap_mode {
IOR_MODE_UNCACHED,
IOR_MODE_CACHED,
};

#ifdef CONFIG_X86_64

unsigned long __phys_addr(unsigned long x)
Expand Down Expand Up @@ -90,18 +85,18 @@ int page_is_ram(unsigned long pagenr)
* Fix up the linear direct mapping of the kernel to avoid cache attribute
* conflicts.
*/
static int ioremap_change_attr(unsigned long vaddr, unsigned long size,
enum ioremap_mode mode)
int ioremap_change_attr(unsigned long vaddr, unsigned long size,
unsigned long prot_val)
{
unsigned long nrpages = size >> PAGE_SHIFT;
int err;

switch (mode) {
case IOR_MODE_UNCACHED:
switch (prot_val) {
case _PAGE_CACHE_UC:
default:
err = set_memory_uc(vaddr, nrpages);
break;
case IOR_MODE_CACHED:
case _PAGE_CACHE_WB:
err = set_memory_wb(vaddr, nrpages);
break;
}
Expand All @@ -119,7 +114,7 @@ static int ioremap_change_attr(unsigned long vaddr, unsigned long size,
* caller shouldn't need to know that small detail.
*/
static void __iomem *__ioremap(resource_size_t phys_addr, unsigned long size,
enum ioremap_mode mode)
unsigned long prot_val)
{
unsigned long pfn, offset, last_addr, vaddr;
struct vm_struct *area;
Expand Down Expand Up @@ -156,12 +151,12 @@ static void __iomem *__ioremap(resource_size_t phys_addr, unsigned long size,
WARN_ON_ONCE(is_ram);
}

switch (mode) {
case IOR_MODE_UNCACHED:
switch (prot_val) {
case _PAGE_CACHE_UC:
default:
prot = PAGE_KERNEL_NOCACHE;
break;
case IOR_MODE_CACHED:
case _PAGE_CACHE_WB:
prot = PAGE_KERNEL;
break;
}
Expand All @@ -186,7 +181,7 @@ static void __iomem *__ioremap(resource_size_t phys_addr, unsigned long size,
return NULL;
}

if (ioremap_change_attr(vaddr, size, mode) < 0) {
if (ioremap_change_attr(vaddr, size, prot_val) < 0) {
vunmap(area->addr);
return NULL;
}
Expand Down Expand Up @@ -217,13 +212,13 @@ static void __iomem *__ioremap(resource_size_t phys_addr, unsigned long size,
*/
void __iomem *ioremap_nocache(resource_size_t phys_addr, unsigned long size)
{
return __ioremap(phys_addr, size, IOR_MODE_UNCACHED);
return __ioremap(phys_addr, size, _PAGE_CACHE_UC);
}
EXPORT_SYMBOL(ioremap_nocache);

void __iomem *ioremap_cache(resource_size_t phys_addr, unsigned long size)
{
return __ioremap(phys_addr, size, IOR_MODE_CACHED);
return __ioremap(phys_addr, size, _PAGE_CACHE_WB);
}
EXPORT_SYMBOL(ioremap_cache);

Expand Down
3 changes: 3 additions & 0 deletions trunk/include/asm-x86/io.h
Original file line number Diff line number Diff line change
Expand Up @@ -3,3 +3,6 @@
#else
# include "io_64.h"
#endif
extern int ioremap_change_attr(unsigned long vaddr, unsigned long size,
unsigned long prot_val);

0 comments on commit f1d3f79

Please sign in to comment.