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drm/amdgpu: Fix Vega20 Perf counter for pcie_bw 

The perf counter for Vega20 is 108, instead of 104 which it was on all
previous GPUs, so add a check to use the appropriate value.

Signed-off-by: Kent Russell <kent.russell@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Kent Russell 2019-07-15 08:53:06 -04:00 committed by Alex Deucher
parent ca9db7d1e0
commit 9417f703af
1 changed files with 8 additions and 2 deletions
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10
drivers/gpu/drm/amd/amdgpu/soc15.c
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@ -717,9 +717,15 @@ static void soc15_get_pcie_usage(struct amdgpu_device *adev, uint64_t *count0,
return;
/* Set the 2 events that we wish to watch, defined above */
/* Reg 40 is # received msgs, Reg 104 is # of posted requests sent */
/* Reg 40 is # received msgs */
perfctr = REG_SET_FIELD(perfctr, PCIE_PERF_CNTL_TXCLK, EVENT0_SEL, 40);
perfctr = REG_SET_FIELD(perfctr, PCIE_PERF_CNTL_TXCLK, EVENT1_SEL, 104);
/* Pre-VG20, Reg 104 is # of posted requests sent. On VG20 it's 108 */
if (adev->asic_type == CHIP_VEGA20)
perfctr = REG_SET_FIELD(perfctr, PCIE_PERF_CNTL_TXCLK,
EVENT1_SEL, 108);
else
perfctr = REG_SET_FIELD(perfctr, PCIE_PERF_CNTL_TXCLK,
EVENT1_SEL, 104);
/* Write to enable desired perf counters */
WREG32_PCIE(smnPCIE_PERF_CNTL_TXCLK, perfctr);