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drm/amdgpu: Add pci replay count to nbio v7.9

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Add implementation to get pcie replay count for nbio v7.9.

Signed-off-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Lijo Lazar 2023-07-27 14:48:01 +05:30 committed by Alex Deucher
parent 792b84fb90
commit 50709d18f4
2 changed files with 21 additions and 1 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

20
drivers/gpu/drm/amd/amdgpu/nbio_v7_9.c
View file

@ -32,6 +32,9 @@
#define NPS_MODE_MASK 0x000000FFL
/* Core 0 Port 0 counter */
#define smnPCIEP_NAK_COUNTER 0x1A340218
static void nbio_v7_9_remap_hdp_registers(struct amdgpu_device *adev)
{
WREG32_SOC15(NBIO, 0, regBIF_BX0_REMAP_HDP_MEM_FLUSH_CNTL,
@ -427,6 +430,22 @@ static void nbio_v7_9_init_registers(struct amdgpu_device *adev)
}
}
static u64 nbio_v7_9_get_pcie_replay_count(struct amdgpu_device *adev)
{
u32 val, nak_r, nak_g;
if (adev->flags & AMD_IS_APU)
return 0;
/* Get the number of NAKs received and generated */
val = RREG32_PCIE(smnPCIEP_NAK_COUNTER);
nak_r = val & 0xFFFF;
nak_g = val >> 16;
/* Add the total number of NAKs, i.e the number of replays */
return (nak_r + nak_g);
}
const struct amdgpu_nbio_funcs nbio_v7_9_funcs = {
.get_hdp_flush_req_offset = nbio_v7_9_get_hdp_flush_req_offset,
.get_hdp_flush_done_offset = nbio_v7_9_get_hdp_flush_done_offset,
@ -450,4 +469,5 @@ const struct amdgpu_nbio_funcs nbio_v7_9_funcs = {
.get_compute_partition_mode = nbio_v7_9_get_compute_partition_mode,
.get_memory_partition_mode = nbio_v7_9_get_memory_partition_mode,
.init_registers = nbio_v7_9_init_registers,
.get_pcie_replay_count = nbio_v7_9_get_pcie_replay_count,
};

2
drivers/gpu/drm/amd/amdgpu/soc15.c
View file

@ -895,7 +895,7 @@ static const struct amdgpu_asic_funcs aqua_vanjaram_asic_funcs =
.init_doorbell_index = &aqua_vanjaram_doorbell_index_init,
.get_pcie_usage = &vega20_get_pcie_usage,
.need_reset_on_init = &soc15_need_reset_on_init,
.get_pcie_replay_count = &soc15_get_pcie_replay_count,
.get_pcie_replay_count = &amdgpu_nbio_get_pcie_replay_count,
.supports_baco = &soc15_supports_baco,
.pre_asic_init = &soc15_pre_asic_init,
.query_video_codecs = &soc15_query_video_codecs,