diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c | 87 |
1 files changed, 46 insertions, 41 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c index d19d1c5e2847..42b2f357a799 100644 --- a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c @@ -38,6 +38,8 @@ #include "vid.h" #include "vi.h" +#include "amdgpu_atombios.h" + static void gmc_v8_0_set_gart_funcs(struct amdgpu_device *adev); static void gmc_v8_0_set_irq_funcs(struct amdgpu_device *adev); @@ -487,48 +489,51 @@ static void gmc_v8_0_mc_program(struct amdgpu_device *adev) */ static int gmc_v8_0_mc_init(struct amdgpu_device *adev) { - u32 tmp; - int chansize, numchan; - - /* Get VRAM informations */ - tmp = RREG32(mmMC_ARB_RAMCFG); - if (REG_GET_FIELD(tmp, MC_ARB_RAMCFG, CHANSIZE)) { - chansize = 64; - } else { - chansize = 32; - } - tmp = RREG32(mmMC_SHARED_CHMAP); - switch (REG_GET_FIELD(tmp, MC_SHARED_CHMAP, NOOFCHAN)) { - case 0: - default: - numchan = 1; - break; - case 1: - numchan = 2; - break; - case 2: - numchan = 4; - break; - case 3: - numchan = 8; - break; - case 4: - numchan = 3; - break; - case 5: - numchan = 6; - break; - case 6: - numchan = 10; - break; - case 7: - numchan = 12; - break; - case 8: - numchan = 16; - break; + adev->mc.vram_width = amdgpu_atombios_get_vram_width(adev); + if (!adev->mc.vram_width) { + u32 tmp; + int chansize, numchan; + + /* Get VRAM informations */ + tmp = RREG32(mmMC_ARB_RAMCFG); + if (REG_GET_FIELD(tmp, MC_ARB_RAMCFG, CHANSIZE)) { + chansize = 64; + } else { + chansize = 32; + } + tmp = RREG32(mmMC_SHARED_CHMAP); + switch (REG_GET_FIELD(tmp, MC_SHARED_CHMAP, NOOFCHAN)) { + case 0: + default: + numchan = 1; + break; + case 1: + numchan = 2; + break; + case 2: + numchan = 4; + break; + case 3: + numchan = 8; + break; + case 4: + numchan = 3; + break; + case 5: + numchan = 6; + break; + case 6: + numchan = 10; + break; + case 7: + numchan = 12; + break; + case 8: + numchan = 16; + break; + } + adev->mc.vram_width = numchan * chansize; } - adev->mc.vram_width = numchan * chansize; /* Could aper size report 0 ? */ adev->mc.aper_base = pci_resource_start(adev->pdev, 0); adev->mc.aper_size = pci_resource_len(adev->pdev, 0); |