diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/nbio_v7_9.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/nbio_v7_9.c | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/nbio_v7_9.c b/drivers/gpu/drm/amd/amdgpu/nbio_v7_9.c index 781f98655567..9ea072374cb7 100644 --- a/drivers/gpu/drm/amd/amdgpu/nbio_v7_9.c +++ b/drivers/gpu/drm/amd/amdgpu/nbio_v7_9.c @@ -35,6 +35,15 @@ /* Core 0 Port 0 counter */ #define smnPCIEP_NAK_COUNTER 0x1A340218 +#define smnPCIE_PERF_CNTL_TXCLK3 0x1A38021c +#define smnPCIE_PERF_CNTL_TXCLK7 0x1A380888 +#define smnPCIE_PERF_COUNT_CNTL 0x1A380200 +#define smnPCIE_PERF_COUNT0_TXCLK3 0x1A380220 +#define smnPCIE_PERF_COUNT0_TXCLK7 0x1A38088C +#define smnPCIE_PERF_COUNT0_UPVAL_TXCLK3 0x1A3808F8 +#define smnPCIE_PERF_COUNT0_UPVAL_TXCLK7 0x1A380918 + + static void nbio_v7_9_remap_hdp_registers(struct amdgpu_device *adev) { WREG32_SOC15(NBIO, 0, regBIF_BX0_REMAP_HDP_MEM_FLUSH_CNTL, @@ -446,6 +455,59 @@ static u64 nbio_v7_9_get_pcie_replay_count(struct amdgpu_device *adev) return (nak_r + nak_g); } +static void nbio_v7_9_get_pcie_usage(struct amdgpu_device *adev, uint64_t *count0, + uint64_t *count1) +{ + uint32_t perfctrrx = 0; + uint32_t perfctrtx = 0; + + /* This reports 0 on APUs, so return to avoid writing/reading registers + * that may or may not be different from their GPU counterparts + */ + if (adev->flags & AMD_IS_APU) + return; + + /* Use TXCLK3 counter group for rx event */ + /* Use TXCLK7 counter group for tx event */ + /* Set the 2 events that we wish to watch, defined above */ + /* 40 is event# for received msgs */ + /* 2 is event# of posted requests sent */ + perfctrrx = REG_SET_FIELD(perfctrrx, PCIE_PERF_CNTL_TXCLK3, EVENT0_SEL, 40); + perfctrtx = REG_SET_FIELD(perfctrtx, PCIE_PERF_CNTL_TXCLK7, EVENT0_SEL, 2); + + /* Write to enable desired perf counters */ + WREG32_PCIE(smnPCIE_PERF_CNTL_TXCLK3, perfctrrx); + WREG32_PCIE(smnPCIE_PERF_CNTL_TXCLK7, perfctrtx); + + /* Zero out and enable SHADOW_WR + * Write 0x6: + * Bit 1 = Global Shadow wr(1) + * Bit 2 = Global counter reset enable(1) + */ + WREG32_PCIE(smnPCIE_PERF_COUNT_CNTL, 0x00000006); + + /* Enable Gloabl Counter + * Write 0x1: + * Bit 0 = Global Counter Enable(1) + */ + WREG32_PCIE(smnPCIE_PERF_COUNT_CNTL, 0x00000001); + + msleep(1000); + + /* Disable Global Counter, Reset and enable SHADOW_WR + * Write 0x6: + * Bit 1 = Global Shadow wr(1) + * Bit 2 = Global counter reset enable(1) + */ + WREG32_PCIE(smnPCIE_PERF_COUNT_CNTL, 0x00000006); + + /* Get the upper and lower count */ + *count0 = RREG32_PCIE(smnPCIE_PERF_COUNT0_TXCLK3) | + ((uint64_t)RREG32_PCIE(smnPCIE_PERF_COUNT0_UPVAL_TXCLK3) << 32); + *count1 = RREG32_PCIE(smnPCIE_PERF_COUNT0_TXCLK7) | + ((uint64_t)RREG32_PCIE(smnPCIE_PERF_COUNT0_UPVAL_TXCLK7) << 32); +} + 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, @@ -470,6 +532,7 @@ const struct amdgpu_nbio_funcs nbio_v7_9_funcs = { .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, + .get_pcie_usage = nbio_v7_9_get_pcie_usage, }; static void nbio_v7_9_query_ras_error_count(struct amdgpu_device *adev, |