Reset gfx/compute queue through mmio based on me_id and queue_id.
Signed-off-by: Jesse Zhang <jesse.zh...@amd.com>
---
drivers/gpu/drm/amd/amdgpu/gfx_v12_0.h | 2 +
drivers/gpu/drm/amd/amdgpu/mes_v12_0.c | 88 +++++++++++++++++++++++++-
2 files changed, 89 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v12_0.h
b/drivers/gpu/drm/amd/amdgpu/gfx_v12_0.h
index bcc9c72ccbde..f7184b2dc4e8 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v12_0.h
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v12_0.h
@@ -26,4 +26,6 @@
extern const struct amdgpu_ip_block_version gfx_v12_0_ip_block;
+int gfx_v12_0_request_gfx_index_mutex(struct amdgpu_device *adev,
+ bool req);
#endif
diff --git a/drivers/gpu/drm/amd/amdgpu/mes_v12_0.c
b/drivers/gpu/drm/amd/amdgpu/mes_v12_0.c
index 0f6635ee84a5..d24a0e7fff15 100644
--- a/drivers/gpu/drm/amd/amdgpu/mes_v12_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/mes_v12_0.c
@@ -24,6 +24,7 @@
#include <linux/firmware.h>
#include <linux/module.h>
#include "amdgpu.h"
+#include "gfx_v12_0.h"
#include "soc15_common.h"
#include "soc21.h"
#include "gc/gc_12_0_0_offset.h"
@@ -350,6 +351,38 @@ static int mes_v12_0_remove_hw_queue(struct amdgpu_mes
*mes,
offsetof(union MESAPI__REMOVE_QUEUE, api_status));
}
+int gfx_v12_0_request_gfx_index_mutex(struct amdgpu_device *adev,
+ bool req)
+{
+ u32 i, tmp, val;
+
+ for (i = 0; i < adev->usec_timeout; i++) {
+ /* Request with MeId=2, PipeId=0 */
+ tmp = REG_SET_FIELD(0, CP_GFX_INDEX_MUTEX, REQUEST, req);
+ tmp = REG_SET_FIELD(tmp, CP_GFX_INDEX_MUTEX, CLIENTID, 4);
+ WREG32_SOC15(GC, 0, regCP_GFX_INDEX_MUTEX, tmp);
+
+ val = RREG32_SOC15(GC, 0, regCP_GFX_INDEX_MUTEX);
+ if (req) {
+ if (val == tmp)
+ break;
+ } else {
+ tmp = REG_SET_FIELD(tmp, CP_GFX_INDEX_MUTEX,
+ REQUEST, 1);
+
+ /* unlocked or locked by firmware */
+ if (val != tmp)
+ break;
+ }
+ udelay(1);
+ }
+
+ if (i >= adev->usec_timeout)
+ return -EINVAL;
+
+ return 0;
+}
+
static int mes_v12_0_reset_queue_mmio(struct amdgpu_mes *mes, uint32_t
queue_type,
uint32_t me_id, uint32_t pipe_id,
uint32_t queue_id, uint32_t vmid)
@@ -360,7 +393,60 @@ static int mes_v12_0_reset_queue_mmio(struct amdgpu_mes
*mes, uint32_t queue_typ
amdgpu_gfx_rlc_enter_safe_mode(adev, 0);
- if (queue_type == AMDGPU_RING_TYPE_SDMA) {
+ if (queue_type == AMDGPU_RING_TYPE_GFX) {
+ dev_info(adev->dev, "reset gfx queue (%d:%d:%d: vmid:%d)\n",
+ me_id, pipe_id, queue_id, vmid);
+
+ mutex_lock(&adev->gfx.reset_sem_mutex);
+ gfx_v12_0_request_gfx_index_mutex(adev, true);
+ /* all se allow writes */
+ WREG32_SOC15(GC, 0, regGRBM_GFX_INDEX,
+ (uint32_t)(0x1 <<
GRBM_GFX_INDEX__SE_BROADCAST_WRITES__SHIFT));
+ value = REG_SET_FIELD(0, CP_VMID_RESET, RESET_REQUEST, 1 <<
vmid);
+ if (pipe_id == 0)
+ value = REG_SET_FIELD(value, CP_VMID_RESET,
PIPE0_QUEUES, 1 << queue_id);
+ else
+ value = REG_SET_FIELD(value, CP_VMID_RESET,
PIPE1_QUEUES, 1 << queue_id);
+ WREG32_SOC15(GC, 0, regCP_VMID_RESET, value);
+ gfx_v12_0_request_gfx_index_mutex(adev, false);
+ mutex_unlock(&adev->gfx.reset_sem_mutex);
+
+ mutex_lock(&adev->srbm_mutex);
+ soc21_grbm_select(adev, me_id, pipe_id, queue_id, 0);
+ /* wait till dequeue take effects */
+ for (i = 0; i < adev->usec_timeout; i++) {
+ if (!(RREG32_SOC15(GC, 0, regCP_GFX_HQD_ACTIVE) & 1))
+ break;
+ udelay(1);
+ }
+ if (i >= adev->usec_timeout) {
+ dev_err(adev->dev, "failed to wait on gfx hqd
deactivate\n");
+ r = -ETIMEDOUT;
+ }
+
+ soc21_grbm_select(adev, 0, 0, 0, 0);
+ mutex_unlock(&adev->srbm_mutex);
+ } else if (queue_type == AMDGPU_RING_TYPE_COMPUTE) {
+ dev_info(adev->dev, "reset compute queue (%d:%d:%d)\n",
+ me_id, pipe_id, queue_id);
+ mutex_lock(&adev->srbm_mutex);
+ soc21_grbm_select(adev, me_id, pipe_id, queue_id, 0);
+ WREG32_SOC15(GC, 0, regCP_HQD_DEQUEUE_REQUEST, 0x2);
+ WREG32_SOC15(GC, 0, regSPI_COMPUTE_QUEUE_RESET, 0x1);
+
+ /* wait till dequeue take effects */
+ for (i = 0; i < adev->usec_timeout; i++) {
+ if (!(RREG32_SOC15(GC, 0, regCP_HQD_ACTIVE) & 1))
+ break;
+ udelay(1);
+ }
+ if (i >= adev->usec_timeout) {
+ dev_err(adev->dev, "failed to wait on hqd
deactivate\n");
+ r = -ETIMEDOUT;
+ }
+ soc21_grbm_select(adev, 0, 0, 0, 0);
+ mutex_unlock(&adev->srbm_mutex);
+ } else if (queue_type == AMDGPU_RING_TYPE_SDMA) {
dev_info(adev->dev, "reset sdma queue (%d:%d:%d)\n",
me_id, pipe_id, queue_id);
switch (me_id) {
--
2.25.1
