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drm/amd/amdgpu: Cleanup gfxhub read-modify-write patterns 

Signed-off-by: Tom St Denis <tom.stdenis@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Tom St Denis 2017-06-12 12:30:41 -04:00 committed by Alex Deucher
parent f7047402d1
commit 805cb75ccb
1 changed files with 3 additions and 8 deletions
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11
drivers/gpu/drm/amd/amdgpu/gfxhub_v1_0.c
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@ -71,7 +71,6 @@ static void gfxhub_v1_0_init_gart_aperture_regs(struct amdgpu_device *adev)
static void gfxhub_v1_0_init_system_aperture_regs(struct amdgpu_device *adev)
{
uint64_t value;
uint32_t tmp;
/* Disable AGP. */
WREG32_SOC15(GC, 0, mmMC_VM_AGP_BASE, 0);
@ -98,10 +97,8 @@ static void gfxhub_v1_0_init_system_aperture_regs(struct amdgpu_device *adev)
WREG32_SOC15(GC, 0, mmVM_L2_PROTECTION_FAULT_DEFAULT_ADDR_HI32,
(u32)((u64)adev->dummy_page.addr >> 44));
tmp = RREG32_SOC15(GC, 0, mmVM_L2_PROTECTION_FAULT_CNTL2);
tmp = REG_SET_FIELD(tmp, VM_L2_PROTECTION_FAULT_CNTL2,
ACTIVE_PAGE_MIGRATION_PTE_READ_RETRY, 1);
WREG32_SOC15(GC, 0, mmVM_L2_PROTECTION_FAULT_CNTL2, tmp);
WREG32_FIELD15(GC, 0, VM_L2_PROTECTION_FAULT_CNTL2,
ACTIVE_PAGE_MIGRATION_PTE_READ_RETRY, 1);
}
static void gfxhub_v1_0_init_tlb_regs(struct amdgpu_device *adev)
@ -278,9 +275,7 @@ void gfxhub_v1_0_gart_disable(struct amdgpu_device *adev)
WREG32_SOC15(GC, 0, mmMC_VM_MX_L1_TLB_CNTL, tmp);
/* Setup L2 cache */
tmp = RREG32_SOC15(GC, 0, mmVM_L2_CNTL);
tmp = REG_SET_FIELD(tmp, VM_L2_CNTL, ENABLE_L2_CACHE, 0);
WREG32_SOC15(GC, 0, mmVM_L2_CNTL, tmp);
WREG32_FIELD15(GC, 0, VM_L2_CNTL, ENABLE_L2_CACHE, 0);
WREG32_SOC15(GC, 0, mmVM_L2_CNTL3, 0);
}