drm/amdgpu: resize VRAM BAR for CPU access v6

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Try to resize BAR0 to let CPU access all of VRAM.

v2: rebased, style cleanups, disable mem decode before resize,
    handle gmc_v9 as well, round size up to power of two.
v3: handle gmc_v6 as well, release and reassign all BARs in the driver.
v4: rename new function to amdgpu_device_resize_fb_bar,
    reenable mem decoding only if all resources are assigned.
v5: reorder resource release, return -ENODEV instead of BUG_ON().
v6: squash in rebase fix

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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This commit is contained in:

Christian König 2017-02-28 10:36:43 +01:00 • committed by Alex Deucher

parent 3c7388936a

commit d6895ad39f

6 changed files with 90 additions and 13 deletions

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1

drivers/gpu/drm/amd/amdgpu/amdgpu.h

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50

drivers/gpu/drm/amd/amdgpu/amdgpu_device.c

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12

drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c

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13

drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c

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13

drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c

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14

drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c

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