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drm/amdgpu/gfx9: switch to golden tsc registers for renoir+ 

Renoir and newer gfx9 APUs have new TSC register that is
not part of the gfxoff tile, so it can be read without
needing to disable gfx off.

Acked-by: Luben Tuikov <luben.tuikov@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2021-11-18 14:50:37 -05:00
parent 244ee39885
commit 53af98c091
1 changed files with 35 additions and 11 deletions
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46
drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
View File

@ -140,6 +140,11 @@ MODULE_FIRMWARE("amdgpu/aldebaran_rlc.bin");
#define mmTCP_CHAN_STEER_5_ARCT 0x0b0c
#define mmTCP_CHAN_STEER_5_ARCT_BASE_IDX 0
#define mmGOLDEN_TSC_COUNT_UPPER_Renoir 0x0025
#define mmGOLDEN_TSC_COUNT_UPPER_Renoir_BASE_IDX 1
#define mmGOLDEN_TSC_COUNT_LOWER_Renoir 0x0026
#define mmGOLDEN_TSC_COUNT_LOWER_Renoir_BASE_IDX 1
enum ta_ras_gfx_subblock {
/*CPC*/
TA_RAS_BLOCK__GFX_CPC_INDEX_START = 0,
@ -4238,19 +4243,38 @@ failed_kiq_read:
static uint64_t gfx_v9_0_get_gpu_clock_counter(struct amdgpu_device *adev)
{
uint64_t clock;
uint64_t clock, clock_lo, clock_hi, hi_check;
amdgpu_gfx_off_ctrl(adev, false);
mutex_lock(&adev->gfx.gpu_clock_mutex);
if (adev->ip_versions[GC_HWIP][0] == IP_VERSION(9, 0, 1) && amdgpu_sriov_runtime(adev)) {
clock = gfx_v9_0_kiq_read_clock(adev);
} else {
WREG32_SOC15(GC, 0, mmRLC_CAPTURE_GPU_CLOCK_COUNT, 1);
clock = (uint64_t)RREG32_SOC15(GC, 0, mmRLC_GPU_CLOCK_COUNT_LSB) |
((uint64_t)RREG32_SOC15(GC, 0, mmRLC_GPU_CLOCK_COUNT_MSB) << 32ULL);
switch (adev->ip_versions[GC_HWIP][0]) {
case IP_VERSION(9, 3, 0):
preempt_disable();
clock_hi = RREG32_SOC15_NO_KIQ(SMUIO, 0, mmGOLDEN_TSC_COUNT_UPPER_Renoir);
clock_lo = RREG32_SOC15_NO_KIQ(SMUIO, 0, mmGOLDEN_TSC_COUNT_LOWER_Renoir);
hi_check = RREG32_SOC15_NO_KIQ(SMUIO, 0, mmGOLDEN_TSC_COUNT_UPPER_Renoir);
/* The SMUIO TSC clock frequency is 100MHz, which sets 32-bit carry over
* roughly every 42 seconds.
*/
if (hi_check != clock_hi) {
clock_lo = RREG32_SOC15_NO_KIQ(SMUIO, 0, mmGOLDEN_TSC_COUNT_LOWER_Renoir);
clock_hi = hi_check;
}
preempt_enable();
clock = clock_lo | (clock_hi << 32ULL);
break;
default:
amdgpu_gfx_off_ctrl(adev, false);
mutex_lock(&adev->gfx.gpu_clock_mutex);
if (adev->ip_versions[GC_HWIP][0] == IP_VERSION(9, 0, 1) && amdgpu_sriov_runtime(adev)) {
clock = gfx_v9_0_kiq_read_clock(adev);
} else {
WREG32_SOC15(GC, 0, mmRLC_CAPTURE_GPU_CLOCK_COUNT, 1);
clock = (uint64_t)RREG32_SOC15(GC, 0, mmRLC_GPU_CLOCK_COUNT_LSB) |
((uint64_t)RREG32_SOC15(GC, 0, mmRLC_GPU_CLOCK_COUNT_MSB) << 32ULL);
}
mutex_unlock(&adev->gfx.gpu_clock_mutex);
amdgpu_gfx_off_ctrl(adev, true);
break;
}
mutex_unlock(&adev->gfx.gpu_clock_mutex);
amdgpu_gfx_off_ctrl(adev, true);
return clock;
}