diff options
| author | Alex Deucher <alexander.deucher@amd.com> | 2018-11-01 00:00:09 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2019-01-14 15:04:56 -0500 |
| commit | 762e6f3f200e0bd538b2d3fd0a4f4ff5a8d45460 (patch) | |
| tree | aaf7a7994ea3441544ae66af4d2cee4b3278dd60 /drivers/gpu/drm/amd/amdgpu/vi.c | |
| parent | 3fcc10d73d611e929fec00ed58d8b048df5c25bd (diff) | |
drm/amdgpu/vi: add need_reset_on_init asic callback for VI (v2)
VI chips require a reset if the driver was previously loaded
because the SMU can only be loaded once between each reset.
v2: rebase
Reviewed-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/vi.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/vi.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/vi.c b/drivers/gpu/drm/amd/amdgpu/vi.c index cdc8ab8d79d7..5e5b42a0744a 100644 --- a/drivers/gpu/drm/amd/amdgpu/vi.c +++ b/drivers/gpu/drm/amd/amdgpu/vi.c @@ -987,6 +987,23 @@ static void vi_get_pcie_usage(struct amdgpu_device *adev, uint64_t *count0, *count1 = RREG32_PCIE(ixPCIE_PERF_COUNT1_TXCLK) | (cnt1_of << 32); } +static bool vi_need_reset_on_init(struct amdgpu_device *adev) +{ + u32 clock_cntl, pc; + + if (adev->flags & AMD_IS_APU) + return false; + + /* check if the SMC is already running */ + clock_cntl = RREG32_SMC(ixSMC_SYSCON_CLOCK_CNTL_0); + pc = RREG32_SMC(ixSMC_PC_C); + if ((0 == REG_GET_FIELD(clock_cntl, SMC_SYSCON_CLOCK_CNTL_0, ck_disable)) && + (0x20100 <= pc)) + return true; + + return false; +} + static const struct amdgpu_asic_funcs vi_asic_funcs = { .read_disabled_bios = &vi_read_disabled_bios, @@ -1003,6 +1020,7 @@ static const struct amdgpu_asic_funcs vi_asic_funcs = .need_full_reset = &vi_need_full_reset, .init_doorbell_index = &legacy_doorbell_index_init, .get_pcie_usage = &vi_get_pcie_usage, + .need_reset_on_init = &vi_need_reset_on_init, }; #define CZ_REV_BRISTOL(rev) \ |