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authorBjorn Helgaas <bjorn.helgaas@hp.com>2006-03-26 01:37:10 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-03-26 08:56:54 -0800
commit9f4fd61fa7c13ea905dac18b9baa766a35b88485 (patch)
treea12015d2a3655aaa2a7fd450bac5c954f02a8569 /drivers/acpi/osl.c
parent23dd842c0033dbb05248c42929c3c526c55386de (diff)
downloadop-kernel-dev-9f4fd61fa7c13ea905dac18b9baa766a35b88485.zip
op-kernel-dev-9f4fd61fa7c13ea905dac18b9baa766a35b88485.tar.gz
[PATCH] ACPI: clean up memory attribute checking for map/read/write
ia64 ioremap is now smart enough to use the correct memory attributes, so remove the EFI checks from osl.c. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Cc: Matt Domsch <Matt_Domsch@dell.com> Cc: "Tolentino, Matthew E" <matthew.e.tolentino@intel.com> Cc: "Brown, Len" <len.brown@intel.com> Cc: Andi Kleen <ak@muc.de> Acked-by: "Luck, Tony" <tony.luck@intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/acpi/osl.c')
-rw-r--r--drivers/acpi/osl.c54
1 files changed, 11 insertions, 43 deletions
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index fc8a3bc..13b5fd5 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -180,22 +180,14 @@ acpi_status
acpi_os_map_memory(acpi_physical_address phys, acpi_size size,
void __iomem ** virt)
{
- if (efi_enabled) {
- if (EFI_MEMORY_WB & efi_mem_attributes(phys)) {
- *virt = (void __iomem *)phys_to_virt(phys);
- } else {
- *virt = ioremap(phys, size);
- }
- } else {
- if (phys > ULONG_MAX) {
- printk(KERN_ERR PREFIX "Cannot map memory that high\n");
- return AE_BAD_PARAMETER;
- }
- /*
- * ioremap checks to ensure this is in reserved space
- */
- *virt = ioremap((unsigned long)phys, size);
+ if (phys > ULONG_MAX) {
+ printk(KERN_ERR PREFIX "Cannot map memory that high\n");
+ return AE_BAD_PARAMETER;
}
+ /*
+ * ioremap checks to ensure this is in reserved space
+ */
+ *virt = ioremap((unsigned long)phys, size);
if (!*virt)
return AE_NO_MEMORY;
@@ -407,18 +399,8 @@ acpi_os_read_memory(acpi_physical_address phys_addr, u32 * value, u32 width)
{
u32 dummy;
void __iomem *virt_addr;
- int iomem = 0;
- if (efi_enabled) {
- if (EFI_MEMORY_WB & efi_mem_attributes(phys_addr)) {
- /* HACK ALERT! We can use readb/w/l on real memory too.. */
- virt_addr = (void __iomem *)phys_to_virt(phys_addr);
- } else {
- iomem = 1;
- virt_addr = ioremap(phys_addr, width);
- }
- } else
- virt_addr = (void __iomem *)phys_to_virt(phys_addr);
+ virt_addr = ioremap(phys_addr, width);
if (!value)
value = &dummy;
@@ -436,10 +418,7 @@ acpi_os_read_memory(acpi_physical_address phys_addr, u32 * value, u32 width)
BUG();
}
- if (efi_enabled) {
- if (iomem)
- iounmap(virt_addr);
- }
+ iounmap(virt_addr);
return AE_OK;
}
@@ -448,18 +427,8 @@ acpi_status
acpi_os_write_memory(acpi_physical_address phys_addr, u32 value, u32 width)
{
void __iomem *virt_addr;
- int iomem = 0;
- if (efi_enabled) {
- if (EFI_MEMORY_WB & efi_mem_attributes(phys_addr)) {
- /* HACK ALERT! We can use writeb/w/l on real memory too */
- virt_addr = (void __iomem *)phys_to_virt(phys_addr);
- } else {
- iomem = 1;
- virt_addr = ioremap(phys_addr, width);
- }
- } else
- virt_addr = (void __iomem *)phys_to_virt(phys_addr);
+ virt_addr = ioremap(phys_addr, width);
switch (width) {
case 8:
@@ -475,8 +444,7 @@ acpi_os_write_memory(acpi_physical_address phys_addr, u32 value, u32 width)
BUG();
}
- if (iomem)
- iounmap(virt_addr);
+ iounmap(virt_addr);
return AE_OK;
}
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