[PATCH 11/32] drm/amdgpu: add configurable grace period for unmap queues
Felix Kuehling
felix.kuehling at amd.com
Mon Mar 20 19:19:52 UTC 2023
On 2023-01-25 14:53, Jonathan Kim wrote:
> The HWS schedule allows a grace period for wave completion prior to
> preemption for better performance by avoiding CWSR on waves that can
> potentially complete quickly. The debugger, on the other hand, will
> want to inspect wave status immediately after it actively triggers
> preemption (a suspend function to be provided).
>
> To minimize latency between preemption and debugger wave inspection, allow
> immediate preemption by setting the grace period to 0.
>
> Note that setting the preepmtion grace period to 0 will result in an
> infinite grace period being set due to a CP FW bug so set it to 1 for now.
>
> v2: clarify purpose in the description of this patch
>
> Signed-off-by: Jonathan Kim <jonathan.kim at amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling at amd.com>
> ---
> .../drm/amd/amdgpu/amdgpu_amdkfd_aldebaran.c | 2 +
> .../drm/amd/amdgpu/amdgpu_amdkfd_arcturus.c | 2 +
> .../drm/amd/amdgpu/amdgpu_amdkfd_gfx_v10.c | 43 ++++++++++++
> .../drm/amd/amdgpu/amdgpu_amdkfd_gfx_v10.h | 6 ++
> .../drm/amd/amdgpu/amdgpu_amdkfd_gfx_v10_3.c | 2 +
> .../gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v9.c | 43 ++++++++++++
> .../gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v9.h | 9 ++-
> .../drm/amd/amdkfd/kfd_device_queue_manager.c | 61 ++++++++++++-----
> .../drm/amd/amdkfd/kfd_device_queue_manager.h | 2 +
> .../gpu/drm/amd/amdkfd/kfd_packet_manager.c | 32 +++++++++
> .../drm/amd/amdkfd/kfd_packet_manager_v9.c | 39 +++++++++++
> .../gpu/drm/amd/amdkfd/kfd_pm4_headers_ai.h | 65 +++++++++++++++++++
> drivers/gpu/drm/amd/amdkfd/kfd_priv.h | 5 ++
> 13 files changed, 291 insertions(+), 20 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_aldebaran.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_aldebaran.c
> index 89868f9927ae..a64a53f9efe6 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_aldebaran.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_aldebaran.c
> @@ -81,5 +81,7 @@ const struct kfd2kgd_calls aldebaran_kfd2kgd = {
> .set_vm_context_page_table_base = kgd_gfx_v9_set_vm_context_page_table_base,
> .enable_debug_trap = kgd_aldebaran_enable_debug_trap,
> .disable_debug_trap = kgd_aldebaran_disable_debug_trap,
> + .get_iq_wait_times = kgd_gfx_v9_get_iq_wait_times,
> + .build_grace_period_packet_info = kgd_gfx_v9_build_grace_period_packet_info,
> .program_trap_handler_settings = kgd_gfx_v9_program_trap_handler_settings,
> };
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_arcturus.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_arcturus.c
> index d5bb86ccd617..ef8befc31fc6 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_arcturus.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_arcturus.c
> @@ -410,6 +410,8 @@ const struct kfd2kgd_calls arcturus_kfd2kgd = {
> kgd_gfx_v9_set_vm_context_page_table_base,
> .enable_debug_trap = kgd_arcturus_enable_debug_trap,
> .disable_debug_trap = kgd_arcturus_disable_debug_trap,
> + .get_iq_wait_times = kgd_gfx_v9_get_iq_wait_times,
> + .build_grace_period_packet_info = kgd_gfx_v9_build_grace_period_packet_info,
> .get_cu_occupancy = kgd_gfx_v9_get_cu_occupancy,
> .program_trap_handler_settings = kgd_gfx_v9_program_trap_handler_settings,
> };
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v10.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v10.c
> index c09b45de02d0..2491402afd58 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v10.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v10.c
> @@ -801,6 +801,47 @@ uint32_t kgd_gfx_v10_disable_debug_trap(struct amdgpu_device *adev,
> return 0;
> }
>
> +/* kgd_gfx_v10_get_iq_wait_times: Returns the mmCP_IQ_WAIT_TIME1/2 values
> + * The values read are:
> + * ib_offload_wait_time -- Wait Count for Indirect Buffer Offloads.
> + * atomic_offload_wait_time -- Wait Count for L2 and GDS Atomics Offloads.
> + * wrm_offload_wait_time -- Wait Count for WAIT_REG_MEM Offloads.
> + * gws_wait_time -- Wait Count for Global Wave Syncs.
> + * que_sleep_wait_time -- Wait Count for Dequeue Retry.
> + * sch_wave_wait_time -- Wait Count for Scheduling Wave Message.
> + * sem_rearm_wait_time -- Wait Count for Semaphore re-arm.
> + * deq_retry_wait_time -- Wait Count for Global Wave Syncs.
> + */
> +void kgd_gfx_v10_get_iq_wait_times(struct amdgpu_device *adev,
> + uint32_t *wait_times)
> +
> +{
> + *wait_times = RREG32(SOC15_REG_OFFSET(GC, 0, mmCP_IQ_WAIT_TIME2));
> +}
> +
> +void kgd_gfx_v10_build_grace_period_packet_info(struct amdgpu_device *adev,
> + uint32_t wait_times,
> + uint32_t grace_period,
> + uint32_t *reg_offset,
> + uint32_t *reg_data)
> +{
> + *reg_data = wait_times;
> +
> + /*
> + * The CP cannont handle a 0 grace period input and will result in
> + * an infinite grace period being set so set to 1 to prevent this.
> + */
> + if (grace_period == 0)
> + grace_period = 1;
> +
> + *reg_data = REG_SET_FIELD(*reg_data,
> + CP_IQ_WAIT_TIME2,
> + SCH_WAVE,
> + grace_period);
> +
> + *reg_offset = SOC15_REG_OFFSET(GC, 0, mmCP_IQ_WAIT_TIME2);
> +}
> +
> static void program_trap_handler_settings(struct amdgpu_device *adev,
> uint32_t vmid, uint64_t tba_addr, uint64_t tma_addr)
> {
> @@ -845,5 +886,7 @@ const struct kfd2kgd_calls gfx_v10_kfd2kgd = {
> .set_vm_context_page_table_base = set_vm_context_page_table_base,
> .enable_debug_trap = kgd_gfx_v10_enable_debug_trap,
> .disable_debug_trap = kgd_gfx_v10_disable_debug_trap,
> + .get_iq_wait_times = kgd_gfx_v10_get_iq_wait_times,
> + .build_grace_period_packet_info = kgd_gfx_v10_build_grace_period_packet_info,
> .program_trap_handler_settings = program_trap_handler_settings,
> };
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v10.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v10.h
> index 370d6c312981..0abc1e805180 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v10.h
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v10.h
> @@ -26,3 +26,9 @@ uint32_t kgd_gfx_v10_enable_debug_trap(struct amdgpu_device *adev,
> uint32_t kgd_gfx_v10_disable_debug_trap(struct amdgpu_device *adev,
> bool keep_trap_enabled,
> uint32_t vmid);
> +void kgd_gfx_v10_get_iq_wait_times(struct amdgpu_device *adev, uint32_t *wait_times);
> +void kgd_gfx_v10_build_grace_period_packet_info(struct amdgpu_device *adev,
> + uint32_t wait_times,
> + uint32_t grace_period,
> + uint32_t *reg_offset,
> + uint32_t *reg_data);
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v10_3.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v10_3.c
> index 73e3b9ae1fb0..c57f2a6b6e23 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v10_3.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v10_3.c
> @@ -670,6 +670,8 @@ const struct kfd2kgd_calls gfx_v10_3_kfd2kgd = {
> .get_atc_vmid_pasid_mapping_info = get_atc_vmid_pasid_mapping_info_v10_3,
> .set_vm_context_page_table_base = set_vm_context_page_table_base_v10_3,
> .program_trap_handler_settings = program_trap_handler_settings_v10_3,
> + .get_iq_wait_times = kgd_gfx_v10_get_iq_wait_times,
> + .build_grace_period_packet_info = kgd_gfx_v10_build_grace_period_packet_info,
> .enable_debug_trap = kgd_gfx_v10_enable_debug_trap,
> .disable_debug_trap = kgd_gfx_v10_disable_debug_trap
> };
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v9.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v9.c
> index 94a9fd9bd984..4a8bd266d3f6 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v9.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v9.c
> @@ -737,6 +737,24 @@ uint32_t kgd_gfx_v9_disable_debug_trap(struct amdgpu_device *adev,
> return 0;
> }
>
> +/* kgd_gfx_v9_get_iq_wait_times: Returns the mmCP_IQ_WAIT_TIME1/2 values
> + * The values read are:
> + * ib_offload_wait_time -- Wait Count for Indirect Buffer Offloads.
> + * atomic_offload_wait_time -- Wait Count for L2 and GDS Atomics Offloads.
> + * wrm_offload_wait_time -- Wait Count for WAIT_REG_MEM Offloads.
> + * gws_wait_time -- Wait Count for Global Wave Syncs.
> + * que_sleep_wait_time -- Wait Count for Dequeue Retry.
> + * sch_wave_wait_time -- Wait Count for Scheduling Wave Message.
> + * sem_rearm_wait_time -- Wait Count for Semaphore re-arm.
> + * deq_retry_wait_time -- Wait Count for Global Wave Syncs.
> + */
> +void kgd_gfx_v9_get_iq_wait_times(struct amdgpu_device *adev,
> + uint32_t *wait_times)
> +
> +{
> + *wait_times = RREG32(SOC15_REG_OFFSET(GC, 0, mmCP_IQ_WAIT_TIME2));
> +}
> +
> void kgd_gfx_v9_set_vm_context_page_table_base(struct amdgpu_device *adev,
> uint32_t vmid, uint64_t page_table_base)
> {
> @@ -921,6 +939,29 @@ void kgd_gfx_v9_get_cu_occupancy(struct amdgpu_device *adev, int pasid,
> adev->gfx.cu_info.max_waves_per_simd;
> }
>
> +void kgd_gfx_v9_build_grace_period_packet_info(struct amdgpu_device *adev,
> + uint32_t wait_times,
> + uint32_t grace_period,
> + uint32_t *reg_offset,
> + uint32_t *reg_data)
> +{
> + *reg_data = wait_times;
> +
> + /*
> + * The CP cannont handle a 0 grace period input and will result in
> + * an infinite grace period being set so set to 1 to prevent this.
> + */
> + if (grace_period == 0)
> + grace_period = 1;
> +
> + *reg_data = REG_SET_FIELD(*reg_data,
> + CP_IQ_WAIT_TIME2,
> + SCH_WAVE,
> + grace_period);
> +
> + *reg_offset = SOC15_REG_OFFSET(GC, 0, mmCP_IQ_WAIT_TIME2);
> +}
> +
> void kgd_gfx_v9_program_trap_handler_settings(struct amdgpu_device *adev,
> uint32_t vmid, uint64_t tba_addr, uint64_t tma_addr)
> {
> @@ -964,6 +1005,8 @@ const struct kfd2kgd_calls gfx_v9_kfd2kgd = {
> .set_vm_context_page_table_base = kgd_gfx_v9_set_vm_context_page_table_base,
> .enable_debug_trap = kgd_gfx_v9_enable_debug_trap,
> .disable_debug_trap = kgd_gfx_v9_disable_debug_trap,
> + .get_iq_wait_times = kgd_gfx_v9_get_iq_wait_times,
> + .build_grace_period_packet_info = kgd_gfx_v9_build_grace_period_packet_info,
> .get_cu_occupancy = kgd_gfx_v9_get_cu_occupancy,
> .program_trap_handler_settings = kgd_gfx_v9_program_trap_handler_settings,
> };
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v9.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v9.h
> index d39256162616..c0866497cb5c 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v9.h
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v9.h
> @@ -20,8 +20,6 @@
> * OTHER DEALINGS IN THE SOFTWARE.
> */
>
> -
> -
> void kgd_gfx_v9_program_sh_mem_settings(struct amdgpu_device *adev, uint32_t vmid,
> uint32_t sh_mem_config,
> uint32_t sh_mem_ape1_base, uint32_t sh_mem_ape1_limit,
> @@ -51,7 +49,6 @@ int kgd_gfx_v9_wave_control_execute(struct amdgpu_device *adev,
> uint32_t sq_cmd);
> bool kgd_gfx_v9_get_atc_vmid_pasid_mapping_info(struct amdgpu_device *adev,
> uint8_t vmid, uint16_t *p_pasid);
> -
> void kgd_gfx_v9_set_vm_context_page_table_base(struct amdgpu_device *adev,
> uint32_t vmid, uint64_t page_table_base);
> void kgd_gfx_v9_get_cu_occupancy(struct amdgpu_device *adev, int pasid,
> @@ -67,3 +64,9 @@ uint32_t kgd_gfx_v9_enable_debug_trap(struct amdgpu_device *adev,
> uint32_t kgd_gfx_v9_disable_debug_trap(struct amdgpu_device *adev,
> bool keep_trap_enabled,
> uint32_t vmid);
> +void kgd_gfx_v9_get_iq_wait_times(struct amdgpu_device *adev, uint32_t *wait_times);
> +void kgd_gfx_v9_build_grace_period_packet_info(struct amdgpu_device *adev,
> + uint32_t wait_times,
> + uint32_t grace_period,
> + uint32_t *reg_offset,
> + uint32_t *reg_data);
> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
> index a2ac98d06e71..7556f80d41e4 100644
> --- a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
> @@ -46,10 +46,13 @@ static int set_pasid_vmid_mapping(struct device_queue_manager *dqm,
>
> static int execute_queues_cpsch(struct device_queue_manager *dqm,
> enum kfd_unmap_queues_filter filter,
> - uint32_t filter_param);
> + uint32_t filter_param,
> + uint32_t grace_period);
> static int unmap_queues_cpsch(struct device_queue_manager *dqm,
> enum kfd_unmap_queues_filter filter,
> - uint32_t filter_param, bool reset);
> + uint32_t filter_param,
> + uint32_t grace_period,
> + bool reset);
>
> static int map_queues_cpsch(struct device_queue_manager *dqm);
>
> @@ -839,7 +842,7 @@ static int update_queue(struct device_queue_manager *dqm, struct queue *q,
> if (dqm->sched_policy != KFD_SCHED_POLICY_NO_HWS) {
> if (!dqm->dev->shared_resources.enable_mes)
> retval = unmap_queues_cpsch(dqm,
> - KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES, 0, false);
> + KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES, 0, USE_DEFAULT_GRACE_PERIOD, false);
> else if (prev_active)
> retval = remove_queue_mes(dqm, q, &pdd->qpd);
>
> @@ -1015,7 +1018,8 @@ static int evict_process_queues_cpsch(struct device_queue_manager *dqm,
> retval = execute_queues_cpsch(dqm,
> qpd->is_debug ?
> KFD_UNMAP_QUEUES_FILTER_ALL_QUEUES :
> - KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES, 0);
> + KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES, 0,
> + USE_DEFAULT_GRACE_PERIOD);
>
> out:
> dqm_unlock(dqm);
> @@ -1155,7 +1159,7 @@ static int restore_process_queues_cpsch(struct device_queue_manager *dqm,
> }
> if (!dqm->dev->shared_resources.enable_mes)
> retval = execute_queues_cpsch(dqm,
> - KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES, 0);
> + KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES, 0, USE_DEFAULT_GRACE_PERIOD);
> qpd->evicted = 0;
> eviction_duration = get_jiffies_64() - pdd->last_evict_timestamp;
> atomic64_add(eviction_duration, &pdd->evict_duration_counter);
> @@ -1490,6 +1494,9 @@ static int initialize_cpsch(struct device_queue_manager *dqm)
>
> init_sdma_bitmaps(dqm);
>
> + if (dqm->dev->kfd2kgd->get_iq_wait_times)
> + dqm->dev->kfd2kgd->get_iq_wait_times(dqm->dev->adev,
> + &dqm->wait_times);
> return 0;
> }
>
> @@ -1529,7 +1536,7 @@ static int start_cpsch(struct device_queue_manager *dqm)
> dqm->is_resetting = false;
> dqm->sched_running = true;
> if (!dqm->dev->shared_resources.enable_mes)
> - execute_queues_cpsch(dqm, KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES, 0);
> + execute_queues_cpsch(dqm, KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES, 0, USE_DEFAULT_GRACE_PERIOD);
> dqm_unlock(dqm);
>
> return 0;
> @@ -1554,7 +1561,7 @@ static int stop_cpsch(struct device_queue_manager *dqm)
>
> if (!dqm->is_hws_hang) {
> if (!dqm->dev->shared_resources.enable_mes)
> - unmap_queues_cpsch(dqm, KFD_UNMAP_QUEUES_FILTER_ALL_QUEUES, 0, false);
> + unmap_queues_cpsch(dqm, KFD_UNMAP_QUEUES_FILTER_ALL_QUEUES, 0, USE_DEFAULT_GRACE_PERIOD, false);
> else
> remove_all_queues_mes(dqm);
> }
> @@ -1596,7 +1603,8 @@ static int create_kernel_queue_cpsch(struct device_queue_manager *dqm,
> list_add(&kq->list, &qpd->priv_queue_list);
> increment_queue_count(dqm, qpd, kq->queue);
> qpd->is_debug = true;
> - execute_queues_cpsch(dqm, KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES, 0);
> + execute_queues_cpsch(dqm, KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES, 0,
> + USE_DEFAULT_GRACE_PERIOD);
> dqm_unlock(dqm);
>
> return 0;
> @@ -1610,7 +1618,8 @@ static void destroy_kernel_queue_cpsch(struct device_queue_manager *dqm,
> list_del(&kq->list);
> decrement_queue_count(dqm, qpd, kq->queue);
> qpd->is_debug = false;
> - execute_queues_cpsch(dqm, KFD_UNMAP_QUEUES_FILTER_ALL_QUEUES, 0);
> + execute_queues_cpsch(dqm, KFD_UNMAP_QUEUES_FILTER_ALL_QUEUES, 0,
> + USE_DEFAULT_GRACE_PERIOD);
> /*
> * Unconditionally decrement this counter, regardless of the queue's
> * type.
> @@ -1687,7 +1696,7 @@ static int create_queue_cpsch(struct device_queue_manager *dqm, struct queue *q,
>
> if (!dqm->dev->shared_resources.enable_mes)
> retval = execute_queues_cpsch(dqm,
> - KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES, 0);
> + KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES, 0, USE_DEFAULT_GRACE_PERIOD);
> else
> retval = add_queue_mes(dqm, q, qpd);
> if (retval)
> @@ -1776,7 +1785,9 @@ static int map_queues_cpsch(struct device_queue_manager *dqm)
> /* dqm->lock mutex has to be locked before calling this function */
> static int unmap_queues_cpsch(struct device_queue_manager *dqm,
> enum kfd_unmap_queues_filter filter,
> - uint32_t filter_param, bool reset)
> + uint32_t filter_param,
> + uint32_t grace_period,
> + bool reset)
> {
> int retval = 0;
> struct mqd_manager *mqd_mgr;
> @@ -1788,6 +1799,12 @@ static int unmap_queues_cpsch(struct device_queue_manager *dqm,
> if (!dqm->active_runlist)
> return retval;
>
> + if (grace_period != USE_DEFAULT_GRACE_PERIOD) {
> + retval = pm_update_grace_period(&dqm->packet_mgr, grace_period);
> + if (retval)
> + return retval;
> + }
> +
> retval = pm_send_unmap_queue(&dqm->packet_mgr, filter, filter_param, reset);
> if (retval)
> return retval;
> @@ -1820,6 +1837,13 @@ static int unmap_queues_cpsch(struct device_queue_manager *dqm,
> return -ETIME;
> }
>
> + /* We need to reset the grace period value for this device */
> + if (grace_period != USE_DEFAULT_GRACE_PERIOD) {
> + if (pm_update_grace_period(&dqm->packet_mgr,
> + USE_DEFAULT_GRACE_PERIOD))
> + pr_err("Failed to reset grace period\n");
> + }
> +
> pm_release_ib(&dqm->packet_mgr);
> dqm->active_runlist = false;
>
> @@ -1835,7 +1859,7 @@ static int reset_queues_cpsch(struct device_queue_manager *dqm,
> dqm_lock(dqm);
>
> retval = unmap_queues_cpsch(dqm, KFD_UNMAP_QUEUES_FILTER_BY_PASID,
> - pasid, true);
> + pasid, USE_DEFAULT_GRACE_PERIOD, true);
>
> dqm_unlock(dqm);
> return retval;
> @@ -1844,13 +1868,14 @@ static int reset_queues_cpsch(struct device_queue_manager *dqm,
> /* dqm->lock mutex has to be locked before calling this function */
> static int execute_queues_cpsch(struct device_queue_manager *dqm,
> enum kfd_unmap_queues_filter filter,
> - uint32_t filter_param)
> + uint32_t filter_param,
> + uint32_t grace_period)
> {
> int retval;
>
> if (dqm->is_hws_hang)
> return -EIO;
> - retval = unmap_queues_cpsch(dqm, filter, filter_param, false);
> + retval = unmap_queues_cpsch(dqm, filter, filter_param, grace_period, false);
> if (retval)
> return retval;
>
> @@ -1908,7 +1933,8 @@ static int destroy_queue_cpsch(struct device_queue_manager *dqm,
> if (!dqm->dev->shared_resources.enable_mes) {
> decrement_queue_count(dqm, qpd, q);
> retval = execute_queues_cpsch(dqm,
> - KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES, 0);
> + KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES, 0,
> + USE_DEFAULT_GRACE_PERIOD);
> if (retval == -ETIME)
> qpd->reset_wavefronts = true;
> } else {
> @@ -2193,7 +2219,7 @@ static int process_termination_cpsch(struct device_queue_manager *dqm,
> }
>
> if (!dqm->dev->shared_resources.enable_mes)
> - retval = execute_queues_cpsch(dqm, filter, 0);
> + retval = execute_queues_cpsch(dqm, filter, 0, USE_DEFAULT_GRACE_PERIOD);
>
> if ((!dqm->is_hws_hang) && (retval || qpd->reset_wavefronts)) {
> pr_warn("Resetting wave fronts (cpsch) on dev %p\n", dqm->dev);
> @@ -2537,7 +2563,8 @@ int dqm_debugfs_hang_hws(struct device_queue_manager *dqm)
> return r;
> }
> dqm->active_runlist = true;
> - r = execute_queues_cpsch(dqm, KFD_UNMAP_QUEUES_FILTER_ALL_QUEUES, 0);
> + r = execute_queues_cpsch(dqm, KFD_UNMAP_QUEUES_FILTER_ALL_QUEUES,
> + 0, USE_DEFAULT_GRACE_PERIOD);
> dqm_unlock(dqm);
>
> return r;
> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.h b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.h
> index a537b9ef3e16..fb48b124161f 100644
> --- a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.h
> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.h
> @@ -37,6 +37,7 @@
>
> #define KFD_MES_PROCESS_QUANTUM 100000
> #define KFD_MES_GANG_QUANTUM 10000
> +#define USE_DEFAULT_GRACE_PERIOD 0xffffffff
>
> struct device_process_node {
> struct qcm_process_device *qpd;
> @@ -256,6 +257,7 @@ struct device_queue_manager {
> struct work_struct hw_exception_work;
> struct kfd_mem_obj hiq_sdma_mqd;
> bool sched_running;
> + uint32_t wait_times;
> };
>
> void device_queue_manager_init_cik(
> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_packet_manager.c b/drivers/gpu/drm/amd/amdkfd/kfd_packet_manager.c
> index ed02b6d8bf63..c57f9a46dfcc 100644
> --- a/drivers/gpu/drm/amd/amdkfd/kfd_packet_manager.c
> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_packet_manager.c
> @@ -369,6 +369,38 @@ int pm_send_query_status(struct packet_manager *pm, uint64_t fence_address,
> return retval;
> }
>
> +int pm_update_grace_period(struct packet_manager *pm, uint32_t grace_period)
> +{
> + int retval = 0;
> + uint32_t *buffer, size;
> +
> + size = pm->pmf->set_grace_period_size;
> +
> + mutex_lock(&pm->lock);
> +
> + if (size) {
> + kq_acquire_packet_buffer(pm->priv_queue,
> + size / sizeof(uint32_t),
> + (unsigned int **)&buffer);
> +
> + if (!buffer) {
> + pr_err("Failed to allocate buffer on kernel queue\n");
> + retval = -ENOMEM;
> + goto out;
> + }
> +
> + retval = pm->pmf->set_grace_period(pm, buffer, grace_period);
> + if (!retval)
> + kq_submit_packet(pm->priv_queue);
> + else
> + kq_rollback_packet(pm->priv_queue);
> + }
> +
> +out:
> + mutex_unlock(&pm->lock);
> + return retval;
> +}
> +
> int pm_send_unmap_queue(struct packet_manager *pm,
> enum kfd_unmap_queues_filter filter,
> uint32_t filter_param, bool reset)
> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_packet_manager_v9.c b/drivers/gpu/drm/amd/amdkfd/kfd_packet_manager_v9.c
> index 18250845a989..f0cdc8695b8c 100644
> --- a/drivers/gpu/drm/amd/amdkfd/kfd_packet_manager_v9.c
> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_packet_manager_v9.c
> @@ -251,6 +251,41 @@ static int pm_map_queues_v9(struct packet_manager *pm, uint32_t *buffer,
> return 0;
> }
>
> +static int pm_set_grace_period_v9(struct packet_manager *pm,
> + uint32_t *buffer,
> + uint32_t grace_period)
> +{
> + struct pm4_mec_write_data_mmio *packet;
> + uint32_t reg_offset = 0;
> + uint32_t reg_data = 0;
> +
> + pm->dqm->dev->kfd2kgd->build_grace_period_packet_info(
> + pm->dqm->dev->adev,
> + pm->dqm->wait_times,
> + grace_period,
> + ®_offset,
> + ®_data);
> +
> + if (grace_period == USE_DEFAULT_GRACE_PERIOD)
> + reg_data = pm->dqm->wait_times;
> +
> + packet = (struct pm4_mec_write_data_mmio *)buffer;
> + memset(buffer, 0, sizeof(struct pm4_mec_write_data_mmio));
> +
> + packet->header.u32All = pm_build_pm4_header(IT_WRITE_DATA,
> + sizeof(struct pm4_mec_write_data_mmio));
> +
> + packet->bitfields2.dst_sel = dst_sel___write_data__mem_mapped_register;
> + packet->bitfields2.addr_incr =
> + addr_incr___write_data__do_not_increment_address;
> +
> + packet->bitfields3.dst_mmreg_addr = reg_offset;
> +
> + packet->data = reg_data;
> +
> + return 0;
> +}
> +
> static int pm_unmap_queues_v9(struct packet_manager *pm, uint32_t *buffer,
> enum kfd_unmap_queues_filter filter,
> uint32_t filter_param, bool reset)
> @@ -333,6 +368,7 @@ const struct packet_manager_funcs kfd_v9_pm_funcs = {
> .set_resources = pm_set_resources_v9,
> .map_queues = pm_map_queues_v9,
> .unmap_queues = pm_unmap_queues_v9,
> + .set_grace_period = pm_set_grace_period_v9,
> .query_status = pm_query_status_v9,
> .release_mem = NULL,
> .map_process_size = sizeof(struct pm4_mes_map_process),
> @@ -340,6 +376,7 @@ const struct packet_manager_funcs kfd_v9_pm_funcs = {
> .set_resources_size = sizeof(struct pm4_mes_set_resources),
> .map_queues_size = sizeof(struct pm4_mes_map_queues),
> .unmap_queues_size = sizeof(struct pm4_mes_unmap_queues),
> + .set_grace_period_size = sizeof(struct pm4_mec_write_data_mmio),
> .query_status_size = sizeof(struct pm4_mes_query_status),
> .release_mem_size = 0,
> };
> @@ -350,6 +387,7 @@ const struct packet_manager_funcs kfd_aldebaran_pm_funcs = {
> .set_resources = pm_set_resources_v9,
> .map_queues = pm_map_queues_v9,
> .unmap_queues = pm_unmap_queues_v9,
> + .set_grace_period = pm_set_grace_period_v9,
> .query_status = pm_query_status_v9,
> .release_mem = NULL,
> .map_process_size = sizeof(struct pm4_mes_map_process_aldebaran),
> @@ -357,6 +395,7 @@ const struct packet_manager_funcs kfd_aldebaran_pm_funcs = {
> .set_resources_size = sizeof(struct pm4_mes_set_resources),
> .map_queues_size = sizeof(struct pm4_mes_map_queues),
> .unmap_queues_size = sizeof(struct pm4_mes_unmap_queues),
> + .set_grace_period_size = sizeof(struct pm4_mec_write_data_mmio),
> .query_status_size = sizeof(struct pm4_mes_query_status),
> .release_mem_size = 0,
> };
> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_pm4_headers_ai.h b/drivers/gpu/drm/amd/amdkfd/kfd_pm4_headers_ai.h
> index a666710ed403..795001c947e1 100644
> --- a/drivers/gpu/drm/amd/amdkfd/kfd_pm4_headers_ai.h
> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_pm4_headers_ai.h
> @@ -583,6 +583,71 @@ struct pm4_mec_release_mem {
>
> #endif
>
> +#ifndef PM4_MEC_WRITE_DATA_DEFINED
> +#define PM4_MEC_WRITE_DATA_DEFINED
> +
> +enum WRITE_DATA_dst_sel_enum {
> + dst_sel___write_data__mem_mapped_register = 0,
> + dst_sel___write_data__tc_l2 = 2,
> + dst_sel___write_data__gds = 3,
> + dst_sel___write_data__memory = 5,
> + dst_sel___write_data__memory_mapped_adc_persistent_state = 6,
> +};
> +
> +enum WRITE_DATA_addr_incr_enum {
> + addr_incr___write_data__increment_address = 0,
> + addr_incr___write_data__do_not_increment_address = 1
> +};
> +
> +enum WRITE_DATA_wr_confirm_enum {
> + wr_confirm___write_data__do_not_wait_for_write_confirmation = 0,
> + wr_confirm___write_data__wait_for_write_confirmation = 1
> +};
> +
> +enum WRITE_DATA_cache_policy_enum {
> + cache_policy___write_data__lru = 0,
> + cache_policy___write_data__stream = 1
> +};
> +
> +
> +struct pm4_mec_write_data_mmio {
> + union {
> + union PM4_MES_TYPE_3_HEADER header; /*header */
> + unsigned int ordinal1;
> + };
> +
> + union {
> + struct {
> + unsigned int reserved1:8;
> + unsigned int dst_sel:4;
> + unsigned int reserved2:4;
> + unsigned int addr_incr:1;
> + unsigned int reserved3:2;
> + unsigned int resume_vf:1;
> + unsigned int wr_confirm:1;
> + unsigned int reserved4:4;
> + unsigned int cache_policy:2;
> + unsigned int reserved5:5;
> + } bitfields2;
> + unsigned int ordinal2;
> + };
> +
> + union {
> + struct {
> + unsigned int dst_mmreg_addr:18;
> + unsigned int reserved6:14;
> + } bitfields3;
> + unsigned int ordinal3;
> + };
> +
> + uint32_t reserved7;
> +
> + uint32_t data;
> +
> +};
> +
> +#endif
> +
> enum {
> CACHE_FLUSH_AND_INV_TS_EVENT = 0x00000014
> };
> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_priv.h b/drivers/gpu/drm/amd/amdkfd/kfd_priv.h
> index 62b75ba28425..d557a7ae756c 100644
> --- a/drivers/gpu/drm/amd/amdkfd/kfd_priv.h
> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_priv.h
> @@ -1300,6 +1300,8 @@ struct packet_manager_funcs {
> int (*unmap_queues)(struct packet_manager *pm, uint32_t *buffer,
> enum kfd_unmap_queues_filter mode,
> uint32_t filter_param, bool reset);
> + int (*set_grace_period)(struct packet_manager *pm, uint32_t *buffer,
> + uint32_t grace_period);
> int (*query_status)(struct packet_manager *pm, uint32_t *buffer,
> uint64_t fence_address, uint64_t fence_value);
> int (*release_mem)(uint64_t gpu_addr, uint32_t *buffer);
> @@ -1310,6 +1312,7 @@ struct packet_manager_funcs {
> int set_resources_size;
> int map_queues_size;
> int unmap_queues_size;
> + int set_grace_period_size;
> int query_status_size;
> int release_mem_size;
> };
> @@ -1332,6 +1335,8 @@ int pm_send_unmap_queue(struct packet_manager *pm,
>
> void pm_release_ib(struct packet_manager *pm);
>
> +int pm_update_grace_period(struct packet_manager *pm, uint32_t grace_period);
> +
> /* Following PM funcs can be shared among VI and AI */
> unsigned int pm_build_pm4_header(unsigned int opcode, size_t packet_size);
>
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