diff options
| author | Perry Yuan <perry.yuan@amd.com> | 2026-02-09 00:42:03 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2026-05-11 15:55:55 -0400 |
| commit | f9f9fe3a7efba665e1c17fb5186d616c4f0a350f (patch) | |
| tree | 150a9379105d183432bd27069645d64424bf5868 | |
| parent | 8ce9c73104e34f1fbb8d7f50468e4a62905331f2 (diff) | |
drm/amdgpu: add PTL enable/query gfx control support for GC 9.4.4
Introduce hardware detection, runtime state tracking and a
kgd->ptl_ctrl() callback to enable/disable/query PTL via the
PSP performance-monitor interface (commands 0xA0000000/1).
The driver now exposes PTL capability to KFD and keeps the
software state in sync with the hardware.
Signed-off-by: Perry Yuan <perry.yuan@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/gfx_v9_4_3.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v9_4_3.c b/drivers/gpu/drm/amd/amdgpu/gfx_v9_4_3.c index d0b8fb931720..467a3dbe1bfa 100644 --- a/drivers/gpu/drm/amd/amdgpu/gfx_v9_4_3.c +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v9_4_3.c @@ -2374,11 +2374,43 @@ static int gfx_v9_4_3_hw_init(struct amdgpu_ip_block *ip_block) return r; } +static int gfx_v9_4_3_perf_monitor_ptl_init(struct amdgpu_device *adev, bool enable) +{ + struct amdgpu_ptl *ptl = &adev->psp.ptl; + uint32_t ptl_state = enable ? 1 : 0; + uint32_t fmt1, fmt2; + int r; + + if (!adev->psp.funcs) + return -EOPNOTSUPP; + + if (!ptl->hw_supported) { + fmt1 = GFX_FTYPE_I8; + fmt2 = GFX_FTYPE_BF16; + } else { + fmt1 = ptl->fmt1; + fmt2 = ptl->fmt2; + } + + /* initialize PTL with default formats: GFX_FTYPE_I8 & GFX_FTYPE_BF16 */ + r = amdgpu_ptl_perf_monitor_ctrl(adev, PSP_PTL_PERF_MON_SET, &ptl_state, + &fmt1, &fmt2); + if (r) + return r; + + ptl->hw_supported = true; + + return 0; +} + static int gfx_v9_4_3_hw_fini(struct amdgpu_ip_block *ip_block) { struct amdgpu_device *adev = ip_block->adev; int i, num_xcc; + if (adev->psp.ptl.hw_supported) + gfx_v9_4_3_perf_monitor_ptl_init(adev, false); + amdgpu_irq_put(adev, &adev->gfx.priv_reg_irq, 0); amdgpu_irq_put(adev, &adev->gfx.priv_inst_irq, 0); amdgpu_irq_put(adev, &adev->gfx.bad_op_irq, 0); @@ -2553,6 +2585,8 @@ static int gfx_v9_4_3_late_init(struct amdgpu_ip_block *ip_block) adev->gfx.ras->enable_watchdog_timer) adev->gfx.ras->enable_watchdog_timer(adev); + gfx_v9_4_3_perf_monitor_ptl_init(adev, true); + return 0; } |