diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/si.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/si.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/si.c b/drivers/gpu/drm/amd/amdgpu/si.c index 9d8df68893b9..4ff930a47e10 100644 --- a/drivers/gpu/drm/amd/amdgpu/si.c +++ b/drivers/gpu/drm/amd/amdgpu/si.c @@ -1375,6 +1375,18 @@ static void si_get_pcie_usage(struct amdgpu_device *adev, uint64_t *count0, *count1 = RREG32_PCIE(ixPCIE_PERF_COUNT1_TXCLK) | (cnt1_of << 32); } +static uint64_t si_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(ixPCIE_RX_NUM_NAK); + nak_g = RREG32_PCIE(ixPCIE_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 si_asic_funcs = { .read_disabled_bios = &si_read_disabled_bios, @@ -1393,6 +1405,7 @@ static const struct amdgpu_asic_funcs si_asic_funcs = .need_full_reset = &si_need_full_reset, .get_pcie_usage = &si_get_pcie_usage, .need_reset_on_init = &si_need_reset_on_init, + .get_pcie_replay_count = &si_get_pcie_replay_count, }; static uint32_t si_get_rev_id(struct amdgpu_device *adev) |