drm/amdgpu: Fix Vega20 Perf counter for pcie_bw (9417f703) · Commits · 戴 / test

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:

drivers/gpu/drm/amd/amdgpu/soc15.c

+8 −2

Original line number	Diff line number	Diff line
		@@ -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);