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drm/amdgpu: Add smuio callback to get gpu clk counter

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Add smuio callback to get gpu clk counter

Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Likun Gao <Likun.Gao@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Hawking Zhang 2024-03-17 19:07:11 +08:00 committed by Alex Deucher
parent 2d93151de8
commit d80e44a34e
2 changed files with 22 additions and 0 deletions
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1
drivers/gpu/drm/amd/amdgpu/amdgpu_smuio.h
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@ -44,6 +44,7 @@ struct amdgpu_smuio_funcs {
u32 (*get_socket_id)(struct amdgpu_device *adev);
enum amdgpu_pkg_type (*get_pkg_type)(struct amdgpu_device *adev);
bool (*is_host_gpu_xgmi_supported)(struct amdgpu_device *adev);
u64 (*get_gpu_clock_counter)(struct amdgpu_device *adev);
};
struct amdgpu_smuio {

21
drivers/gpu/drm/amd/amdgpu/smuio_v14_0_2.c
View File

@ -24,6 +24,7 @@
#include "smuio_v14_0_2.h"
#include "smuio/smuio_14_0_2_offset.h"
#include "smuio/smuio_14_0_2_sh_mask.h"
#include <linux/preempt.h>
static u32 smuio_v14_0_2_get_rom_index_offset(struct amdgpu_device *adev)
{
@ -35,7 +36,27 @@ static u32 smuio_v14_0_2_get_rom_data_offset(struct amdgpu_device *adev)
return SOC15_REG_OFFSET(SMUIO, 0, regROM_DATA);
}
static u64 smuio_v14_0_2_get_gpu_clock_counter(struct amdgpu_device *adev)
{
u64 clock;
u64 clock_counter_lo, clock_counter_hi_pre, clock_counter_hi_after;
preempt_disable();
clock_counter_hi_pre = (u64)RREG32_SOC15(SMUIO, 0, regGOLDEN_TSC_COUNT_UPPER);
clock_counter_lo = (u64)RREG32_SOC15(SMUIO, 0, regGOLDEN_TSC_COUNT_LOWER);
/* the clock counter may be udpated during polling the counters */
clock_counter_hi_after = (u64)RREG32_SOC15(SMUIO, 0, regGOLDEN_TSC_COUNT_UPPER);
if (clock_counter_hi_pre != clock_counter_hi_after)
clock_counter_lo = (u64)RREG32_SOC15(SMUIO, 0, regGOLDEN_TSC_COUNT_LOWER);
preempt_enable();
clock = clock_counter_lo | (clock_counter_hi_after << 32ULL);
return clock;
}
const struct amdgpu_smuio_funcs smuio_v14_0_2_funcs = {
.get_rom_index_offset = smuio_v14_0_2_get_rom_index_offset,
.get_rom_data_offset = smuio_v14_0_2_get_rom_data_offset,
.get_gpu_clock_counter = smuio_v14_0_2_get_gpu_clock_counter,
};