Implement the GFX12 kgq pipe reset, temporarily disable
the GFX12 pipe reset untill the CPFW fully support it.
Signed-off-by: Prike Liang <Prike.Liang@xxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/gfx_v12_0.c | 71 +++++++++++++++++++++++++-
1 file changed, 69 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v12_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v12_0.c
index db5cc060de85..14ea7c1e827e 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v12_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v12_0.c
@@ -52,6 +52,7 @@
#define GFX12_MEC_HPD_SIZE 2048
#define RLCG_UCODE_LOADING_START_ADDRESS 0x00002000L
+static uint32_t me_fw_start_pc;
MODULE_FIRMWARE("amdgpu/gc_12_0_0_pfp.bin");
MODULE_FIRMWARE("amdgpu/gc_12_0_0_me.bin");
@@ -2210,6 +2211,8 @@ static void gfx_v12_0_set_me_ucode_start_addr(struct amdgpu_device *adev)
}
soc24_grbm_select(adev, 0, 0, 0, 0);
mutex_unlock(&adev->srbm_mutex);
+ /* cache the firmware start PC */
+ me_fw_start_pc = RREG32(SOC15_REG_OFFSET(GC, 0, regCP_GFX_RS64_INSTR_PNTR1));
}
static void gfx_v12_0_set_mec_ucode_start_addr(struct amdgpu_device *adev)
@@ -5249,6 +5252,68 @@ static void gfx_v12_ip_dump(struct amdgpu_ip_block *ip_block)
amdgpu_gfx_off_ctrl(adev, true);
}
+static bool gfx_v12_pipe_reset_support(struct amdgpu_device *adev)
+{
+ /* Disable the pipe reset until the CPFW fully support it.*/
+ dev_warn_once(adev->dev, "The CPFW hasn't support pipe reset yet.\n");
+ return false;
+}
+
+static int gfx_v12_reset_gfx_pipe(struct amdgpu_ring *ring)
+{
+ struct amdgpu_device *adev = ring->adev;
+ uint32_t reset_pipe = 0, clean_pipe = 0;
+ int r;
+
+ if (!gfx_v12_pipe_reset_support(adev))
+ return -EOPNOTSUPP;
+
+ gfx_v12_0_set_safe_mode(adev, 0);
+ mutex_lock(&adev->srbm_mutex);
+ soc24_grbm_select(adev, ring->me, ring->pipe, ring->queue, 0);
+
+ switch (ring->pipe) {
+ case 0:
+ reset_pipe = REG_SET_FIELD(reset_pipe, CP_ME_CNTL,
+ PFP_PIPE0_RESET, 1);
+ reset_pipe = REG_SET_FIELD(reset_pipe, CP_ME_CNTL,
+ ME_PIPE0_RESET, 1);
+ clean_pipe = REG_SET_FIELD(clean_pipe, CP_ME_CNTL,
+ PFP_PIPE0_RESET, 0);
+ clean_pipe = REG_SET_FIELD(clean_pipe, CP_ME_CNTL,
+ ME_PIPE0_RESET, 0);
+ break;
+ case 1:
+ reset_pipe = REG_SET_FIELD(reset_pipe, CP_ME_CNTL,
+ PFP_PIPE1_RESET, 1);
+ reset_pipe = REG_SET_FIELD(reset_pipe, CP_ME_CNTL,
+ ME_PIPE1_RESET, 1);
+ clean_pipe = REG_SET_FIELD(clean_pipe, CP_ME_CNTL,
+ PFP_PIPE1_RESET, 0);
+ clean_pipe = REG_SET_FIELD(clean_pipe, CP_ME_CNTL,
+ ME_PIPE1_RESET, 0);
+ break;
+ default:
+ break;
+ }
+
+ WREG32_SOC15(GC, 0, regCP_ME_CNTL, reset_pipe);
+ WREG32_SOC15(GC, 0, regCP_ME_CNTL, clean_pipe);
+
+ r = RREG32(SOC15_REG_OFFSET(GC, 0, regCP_GFX_RS64_INSTR_PNTR1)) - me_fw_start_pc;
+ soc24_grbm_select(adev, 0, 0, 0, 0);
+ mutex_unlock(&adev->srbm_mutex);
+ gfx_v12_0_unset_safe_mode(adev, 0);
+
+ dev_info(adev->dev,"The ring %s pipe reset: %s\n", ring->name,
+ r == 0 ? "successfuly" : "failed");
+ /* Sometimes the ME start pc counter can't cache correctly, so the
+ * PC check only as a reference and pipe reset result rely on the
+ * later ring test.
+ */
+ return 0;
+}
+
static int gfx_v12_0_reset_kgq(struct amdgpu_ring *ring, unsigned int vmid)
{
struct amdgpu_device *adev = ring->adev;
@@ -5259,8 +5324,10 @@ static int gfx_v12_0_reset_kgq(struct amdgpu_ring *ring, unsigned int vmid)
r = amdgpu_mes_reset_legacy_queue(ring->adev, ring, vmid, false);
if (r) {
- dev_err(adev->dev, "reset via MES failed %d\n", r);
- return r;
+ dev_warn(adev->dev,"reset via MES failed and try pipe reset %d\n", r);
+ r = gfx_v12_reset_gfx_pipe(ring);
+ if (r)
+ return r;
}
r = amdgpu_bo_reserve(ring->mqd_obj, false);
--
2.34.1
