Commit ffb57c4b authored by Jay Estabrook's avatar Jay Estabrook Committed by Dave Airlie

drm/radeon/alpha: Add Alpha support to Radeon DRM code

Alpha needs to have available the system bus address for the Radeon's
local memory, so that it can be used in ttm_bo_vm_fault(), when building
the PTEs for accessing that VRAM.  So, we make bus.addr hold the ioremap()
return, and then we can modify bus.base appropriately for use during page
fault processing.
Signed-off-by: default avatarJay Estabrook <jay.estabrook@gmail.com>
Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
parent 3210d190
...@@ -450,6 +450,29 @@ static int radeon_ttm_io_mem_reserve(struct ttm_bo_device *bdev, struct ttm_mem_ ...@@ -450,6 +450,29 @@ static int radeon_ttm_io_mem_reserve(struct ttm_bo_device *bdev, struct ttm_mem_
return -EINVAL; return -EINVAL;
mem->bus.base = rdev->mc.aper_base; mem->bus.base = rdev->mc.aper_base;
mem->bus.is_iomem = true; mem->bus.is_iomem = true;
#ifdef __alpha__
/*
* Alpha: use bus.addr to hold the ioremap() return,
* so we can modify bus.base below.
*/
if (mem->placement & TTM_PL_FLAG_WC)
mem->bus.addr =
ioremap_wc(mem->bus.base + mem->bus.offset,
mem->bus.size);
else
mem->bus.addr =
ioremap_nocache(mem->bus.base + mem->bus.offset,
mem->bus.size);
/*
* Alpha: Use just the bus offset plus
* the hose/domain memory base for bus.base.
* It then can be used to build PTEs for VRAM
* access, as done in ttm_bo_vm_fault().
*/
mem->bus.base = (mem->bus.base & 0x0ffffffffUL) +
rdev->ddev->hose->dense_mem_base;
#endif
break; break;
default: default:
return -EINVAL; return -EINVAL;
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment