diff options
| author | Bjorn Helgaas <bhelgaas@google.com> | 2014-01-06 23:21:16 +0100 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2014-01-07 19:36:35 +0100 |
| commit | d68c5a271727e09ce4a26ea8b85cbb852e06650f (patch) | |
| tree | 58f48c1f956a0a18f7dff57718ca19e0f4d2b6b1 /drivers/char/agp/amd-k7-agp.c | |
| parent | agp: Support 64-bit APBASE (diff) | |
| download | linux-d68c5a271727e09ce4a26ea8b85cbb852e06650f.tar.xz linux-d68c5a271727e09ce4a26ea8b85cbb852e06650f.zip | |
agp: Use pci_resource_start() to get CPU physical address for BAR
amd_irongate_configure(), ati_configure(), and nvidia_configure() call
ioremap() on an address read directly from a BAR. But a BAR contains a
bus address, and ioremap() expects a CPU physical address. Use
pci_resource_start() to obtain the physical address.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/char/agp/amd-k7-agp.c')
| -rw-r--r-- | drivers/char/agp/amd-k7-agp.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/char/agp/amd-k7-agp.c b/drivers/char/agp/amd-k7-agp.c index 5f028cb1d6e8..3661a51e93e2 100644 --- a/drivers/char/agp/amd-k7-agp.c +++ b/drivers/char/agp/amd-k7-agp.c @@ -11,7 +11,7 @@ #include <linux/slab.h> #include "agp.h" -#define AMD_MMBASE 0x14 +#define AMD_MMBASE_BAR 1 #define AMD_APSIZE 0xac #define AMD_MODECNTL 0xb0 #define AMD_MODECNTL2 0xb2 @@ -205,6 +205,7 @@ static int amd_irongate_fetch_size(void) static int amd_irongate_configure(void) { struct aper_size_info_lvl2 *current_size; + phys_addr_t reg; u32 temp; u16 enable_reg; @@ -212,9 +213,8 @@ static int amd_irongate_configure(void) if (!amd_irongate_private.registers) { /* Get the memory mapped registers */ - pci_read_config_dword(agp_bridge->dev, AMD_MMBASE, &temp); - temp = (temp & PCI_BASE_ADDRESS_MEM_MASK); - amd_irongate_private.registers = (volatile u8 __iomem *) ioremap(temp, 4096); + reg = pci_resource_start(agp_bridge->dev, AMD_MMBASE_BAR); + amd_irongate_private.registers = (volatile u8 __iomem *) ioremap(reg, 4096); if (!amd_irongate_private.registers) return -ENOMEM; } |