diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/soc15.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/soc15.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/soc15.c b/drivers/gpu/drm/amd/amdgpu/soc15.c index 8849b74078d6..bb89833ed3e7 100644 --- a/drivers/gpu/drm/amd/amdgpu/soc15.c +++ b/drivers/gpu/drm/amd/amdgpu/soc15.c @@ -43,6 +43,9 @@ #include "hdp/hdp_4_0_sh_mask.h" #include "smuio/smuio_9_0_offset.h" #include "smuio/smuio_9_0_sh_mask.h" +#include "nbio/nbio_7_0_default.h" +#include "nbio/nbio_7_0_sh_mask.h" +#include "nbio/nbio_7_0_smn.h" #include "soc15.h" #include "soc15_common.h" @@ -601,6 +604,51 @@ static bool soc15_need_full_reset(struct amdgpu_device *adev) /* change this when we implement soft reset */ return true; } +static void soc15_get_pcie_usage(struct amdgpu_device *adev, uint64_t *count0, + uint64_t *count1) +{ + uint32_t perfctr = 0; + uint64_t cnt0_of, cnt1_of; + int tmp; + + /* 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; + + /* Set the 2 events that we wish to watch, defined above */ + /* Reg 40 is # received msgs, Reg 104 is # of posted requests sent */ + perfctr = REG_SET_FIELD(perfctr, PCIE_PERF_CNTL_TXCLK, EVENT0_SEL, 40); + 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); + /* Zero out and enable the perf counters + * Write 0x5: + * Bit 0 = Start all counters(1) + * Bit 2 = Global counter reset enable(1) + */ + WREG32_PCIE(smnPCIE_PERF_COUNT_CNTL, 0x00000005); + + msleep(1000); + + /* Load the shadow and disable the perf counters + * Write 0x2: + * Bit 0 = Stop counters(0) + * Bit 1 = Load the shadow counters(1) + */ + WREG32_PCIE(smnPCIE_PERF_COUNT_CNTL, 0x00000002); + + /* Read register values to get any >32bit overflow */ + tmp = RREG32_PCIE(smnPCIE_PERF_CNTL_TXCLK); + cnt0_of = REG_GET_FIELD(tmp, PCIE_PERF_CNTL_TXCLK, COUNTER0_UPPER); + cnt1_of = REG_GET_FIELD(tmp, PCIE_PERF_CNTL_TXCLK, COUNTER1_UPPER); + + /* Get the values and add the overflow */ + *count0 = RREG32_PCIE(smnPCIE_PERF_COUNT0_TXCLK) | (cnt0_of << 32); + *count1 = RREG32_PCIE(smnPCIE_PERF_COUNT1_TXCLK) | (cnt1_of << 32); +} static const struct amdgpu_asic_funcs soc15_asic_funcs = { @@ -617,6 +665,7 @@ static const struct amdgpu_asic_funcs soc15_asic_funcs = .invalidate_hdp = &soc15_invalidate_hdp, .need_full_reset = &soc15_need_full_reset, .init_doorbell_index = &vega10_doorbell_index_init, + .get_pcie_usage = &soc15_get_pcie_usage, }; static const struct amdgpu_asic_funcs vega20_asic_funcs = @@ -634,6 +683,7 @@ static const struct amdgpu_asic_funcs vega20_asic_funcs = .invalidate_hdp = &soc15_invalidate_hdp, .need_full_reset = &soc15_need_full_reset, .init_doorbell_index = &vega20_doorbell_index_init, + .get_pcie_usage = &soc15_get_pcie_usage, }; static int soc15_common_early_init(void *handle) |