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drm/radeon/kms: fix VRAM sizing like DDX does it.

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Doing this like the DDX seems like the most sure fire way to avoid
having to reinvent it slowly and painfully. At the moment we keep
getting things wrong with aper vs vram, so we know the DDX does it right.

booted on PCI r100, PCIE rv370, IGP rs400.

Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Dave Airlie
2009-07-11 04:44:47 +10:00
committed by Dave Airlie
parent ad49f50186
commit 2a0f8918fc
7 changed files with 71 additions and 31 deletions
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14
drivers/gpu/drm/radeon/rs400.c
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@@ -292,24 +292,12 @@ void rs400_gpu_init(struct radeon_device *rdev)
*/
void rs400_vram_info(struct radeon_device *rdev)
{
uint32_t tom;
rs400_gart_adjust_size(rdev);
/* DDR for all card after R300 & IGP */
rdev->mc.vram_is_ddr = true;
rdev->mc.vram_width = 128;
/* read NB_TOM to get the amount of ram stolen for the GPU */
tom = RREG32(RADEON_NB_TOM);
rdev->mc.vram_size = (((tom >> 16) - (tom & 0xffff) + 1) << 16);
WREG32(RADEON_CONFIG_MEMSIZE, rdev->mc.vram_size);
/* RS480 IGPs don't seem to translate to main RAM, they
* just reserve and scan out of it. So setting VRAM location
* to say 0, will actually trash the OS. */
rdev->mc.vram_location = (tom & 0xffff) << 16;
rdev->mc.aper_base = drm_get_resource_start(rdev->ddev, 0);
rdev->mc.aper_size = drm_get_resource_len(rdev->ddev, 0);
r100_vram_init_sizes(rdev);
}