diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/soc15.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/soc15.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/soc15.c b/drivers/gpu/drm/amd/amdgpu/soc15.c index 78bd00a0142f..78b27c03b8c2 100644 --- a/drivers/gpu/drm/amd/amdgpu/soc15.c +++ b/drivers/gpu/drm/amd/amdgpu/soc15.c @@ -745,6 +745,18 @@ static bool soc15_need_reset_on_init(struct amdgpu_device *adev) return false; } +static uint64_t soc15_get_pcie_replay_count(struct amdgpu_device *adev) +{ + uint64_t nak_r, nak_g; + + /* Get the number of NAKs received and generated */ + nak_r = RREG32_PCIE(smnPCIE_RX_NUM_NAK); + nak_g = RREG32_PCIE(smnPCIE_RX_NUM_NAK_GENERATED); + + /* Add the total number of NAKs, i.e the number of replays */ + return (nak_r + nak_g); +} + static const struct amdgpu_asic_funcs soc15_asic_funcs = { .read_disabled_bios = &soc15_read_disabled_bios, @@ -762,6 +774,7 @@ static const struct amdgpu_asic_funcs soc15_asic_funcs = .init_doorbell_index = &vega10_doorbell_index_init, .get_pcie_usage = &soc15_get_pcie_usage, .need_reset_on_init = &soc15_need_reset_on_init, + .get_pcie_replay_count = &soc15_get_pcie_replay_count, }; static const struct amdgpu_asic_funcs vega20_asic_funcs = @@ -781,6 +794,7 @@ static const struct amdgpu_asic_funcs vega20_asic_funcs = .init_doorbell_index = &vega20_doorbell_index_init, .get_pcie_usage = &soc15_get_pcie_usage, .need_reset_on_init = &soc15_need_reset_on_init, + .get_pcie_replay_count = &soc15_get_pcie_replay_count, }; static int soc15_common_early_init(void *handle) |