For the bad opcode case, it will cause CP/ME hang.
The firmware will prevent the ME side from hanging by raising a bad opcode interrupt.
And the driver needs to perform a vmid reset when receiving the interrupt.
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/gfx_v9_4_3.c | 69 +++++++++++++++++++++++++
1 file changed, 69 insertions(+)
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 43a3ef276b5f..98fe6c40da64 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v9_4_3.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v9_4_3.c
@@ -901,6 +901,13 @@ static int gfx_v9_4_3_sw_init(void *handle)
if (r)
return r;
+ /* Bad opcode Event */
+ r = amdgpu_irq_add_id(adev, SOC15_IH_CLIENTID_GRBM_CP,
+ GFX_9_0__SRCID__CP_BAD_OPCODE_ERROR,
+ &adev->gfx.bad_op_irq);
+ if (r)
+ return r;
+
/* Privileged reg */
r = amdgpu_irq_add_id(adev, SOC15_IH_CLIENTID_GRBM_CP, GFX_9_0__SRCID__CP_PRIV_REG_FAULT,
&adev->gfx.priv_reg_irq);
@@ -2162,6 +2169,7 @@ static int gfx_v9_4_3_hw_fini(void *handle)
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);
num_xcc = NUM_XCC(adev->gfx.xcc_mask);
for (i = 0; i < num_xcc; i++) {
@@ -2327,6 +2335,10 @@ static int gfx_v9_4_3_late_init(void *handle)
if (r)
return r;
+ r = amdgpu_irq_get(adev, &adev->gfx.bad_op_irq, 0);
+ if (r)
+ return r;
+
if (adev->gfx.ras &&
adev->gfx.ras->enable_watchdog_timer)
adev->gfx.ras->enable_watchdog_timer(adev);
@@ -2964,6 +2976,46 @@ static int gfx_v9_4_3_set_priv_reg_fault_state(struct amdgpu_device *adev,
return 0;
}
+static int gfx_v9_4_3_set_bad_op_fault_state(struct amdgpu_device *adev,
+ struct amdgpu_irq_src *source,
+ unsigned type,
+ enum amdgpu_interrupt_state state)
+{
+ u32 mec_int_cntl_reg, mec_int_cntl;
+ int i, j, k, num_xcc;
+
+ num_xcc = NUM_XCC(adev->gfx.xcc_mask);
+ switch (state) {
+ case AMDGPU_IRQ_STATE_DISABLE:
+ case AMDGPU_IRQ_STATE_ENABLE:
+ for (i = 0; i < num_xcc; i++) {
+ WREG32_FIELD15_PREREG(GC, GET_INST(GC, i), CP_INT_CNTL_RING0,
+ OPCODE_ERROR_INT_ENABLE,
+ state == AMDGPU_IRQ_STATE_ENABLE ? 1 : 0);
+ for (j = 0; j < adev->gfx.mec.num_mec; j++) {
+ for (k = 0; k < adev->gfx.mec.num_pipe_per_mec; k++) {
+ /* MECs start at 1 */
+ mec_int_cntl_reg = gfx_v9_4_3_get_cpc_int_cntl(adev, i, j + 1, k);
+
+ if (mec_int_cntl_reg) {
+ mec_int_cntl = RREG32_XCC(mec_int_cntl_reg, i);
+ mec_int_cntl = REG_SET_FIELD(mec_int_cntl, CP_ME1_PIPE0_INT_CNTL,
+ OPCODE_ERROR_INT_ENABLE,
+ state == AMDGPU_IRQ_STATE_ENABLE ?
+ 1 : 0);
+ WREG32_XCC(mec_int_cntl_reg, mec_int_cntl, i);
+ }
+ }
+ }
+ }
+ break;
+ default:
+ break;
+ }
+
+ return 0;
+}
+
static int gfx_v9_4_3_set_priv_inst_fault_state(struct amdgpu_device *adev,
struct amdgpu_irq_src *source,
unsigned type,
@@ -3116,6 +3168,15 @@ static int gfx_v9_4_3_priv_reg_irq(struct amdgpu_device *adev,
return 0;
}
+static int gfx_v9_4_3_bad_op_irq(struct amdgpu_device *adev,
+ struct amdgpu_irq_src *source,
+ struct amdgpu_iv_entry *entry)
+{
+ DRM_ERROR("Illegal opcode in command stream\n");
+ gfx_v9_4_3_fault(adev, entry);
+ return 0;
+}
+
static int gfx_v9_4_3_priv_inst_irq(struct amdgpu_device *adev,
struct amdgpu_irq_src *source,
struct amdgpu_iv_entry *entry)
@@ -4228,6 +4289,11 @@ static const struct amdgpu_irq_src_funcs gfx_v9_4_3_priv_reg_irq_funcs = {
.process = gfx_v9_4_3_priv_reg_irq,
};
+static const struct amdgpu_irq_src_funcs gfx_v9_4_3_bad_op_irq_funcs = {
+ .set = gfx_v9_4_3_set_bad_op_fault_state,
+ .process = gfx_v9_4_3_bad_op_irq,
+};
+
static const struct amdgpu_irq_src_funcs gfx_v9_4_3_priv_inst_irq_funcs = {
.set = gfx_v9_4_3_set_priv_inst_fault_state,
.process = gfx_v9_4_3_priv_inst_irq,
@@ -4241,6 +4307,9 @@ static void gfx_v9_4_3_set_irq_funcs(struct amdgpu_device *adev)
adev->gfx.priv_reg_irq.num_types = 1;
adev->gfx.priv_reg_irq.funcs = &gfx_v9_4_3_priv_reg_irq_funcs;
+ adev->gfx.bad_op_irq.num_types = 1;
+ adev->gfx.bad_op_irq.funcs = &gfx_v9_4_3_bad_op_irq_funcs;
+
adev->gfx.priv_inst_irq.num_types = 1;
adev->gfx.priv_inst_irq.funcs = &gfx_v9_4_3_priv_inst_irq_funcs;
}
--
2.45.2
