| /* |
| * Copyright 2014 Advanced Micro Devices, Inc. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| * OTHER DEALINGS IN THE SOFTWARE. |
| * |
| */ |
| |
| #include <linux/ratelimit.h> |
| #include <linux/printk.h> |
| #include <linux/slab.h> |
| #include <linux/list.h> |
| #include <linux/types.h> |
| #include <linux/bitops.h> |
| #include <linux/sched.h> |
| #include "kfd_priv.h" |
| #include "kfd_device_queue_manager.h" |
| #include "kfd_mqd_manager.h" |
| #include "cik_regs.h" |
| #include "kfd_kernel_queue.h" |
| #include "amdgpu_amdkfd.h" |
| |
| /* Size of the per-pipe EOP queue */ |
| #define CIK_HPD_EOP_BYTES_LOG2 11 |
| #define CIK_HPD_EOP_BYTES (1U << CIK_HPD_EOP_BYTES_LOG2) |
| |
| static int set_pasid_vmid_mapping(struct device_queue_manager *dqm, |
| unsigned int pasid, unsigned int vmid); |
| |
| static int create_compute_queue_nocpsch(struct device_queue_manager *dqm, |
| struct queue *q, |
| struct qcm_process_device *qpd); |
| |
| static int execute_queues_cpsch(struct device_queue_manager *dqm, |
| enum kfd_unmap_queues_filter filter, |
| uint32_t filter_param); |
| static int unmap_queues_cpsch(struct device_queue_manager *dqm, |
| enum kfd_unmap_queues_filter filter, |
| uint32_t filter_param); |
| |
| static int map_queues_cpsch(struct device_queue_manager *dqm); |
| |
| static int create_sdma_queue_nocpsch(struct device_queue_manager *dqm, |
| struct queue *q, |
| struct qcm_process_device *qpd); |
| |
| static void deallocate_sdma_queue(struct device_queue_manager *dqm, |
| unsigned int sdma_queue_id); |
| |
| static void kfd_process_hw_exception(struct work_struct *work); |
| |
| static inline |
| enum KFD_MQD_TYPE get_mqd_type_from_queue_type(enum kfd_queue_type type) |
| { |
| if (type == KFD_QUEUE_TYPE_SDMA) |
| return KFD_MQD_TYPE_SDMA; |
| return KFD_MQD_TYPE_CP; |
| } |
| |
| static bool is_pipe_enabled(struct device_queue_manager *dqm, int mec, int pipe) |
| { |
| int i; |
| int pipe_offset = mec * dqm->dev->shared_resources.num_pipe_per_mec |
| + pipe * dqm->dev->shared_resources.num_queue_per_pipe; |
| |
| /* queue is available for KFD usage if bit is 1 */ |
| for (i = 0; i < dqm->dev->shared_resources.num_queue_per_pipe; ++i) |
| if (test_bit(pipe_offset + i, |
| dqm->dev->shared_resources.queue_bitmap)) |
| return true; |
| return false; |
| } |
| |
| unsigned int get_queues_num(struct device_queue_manager *dqm) |
| { |
| return bitmap_weight(dqm->dev->shared_resources.queue_bitmap, |
| KGD_MAX_QUEUES); |
| } |
| |
| unsigned int get_queues_per_pipe(struct device_queue_manager *dqm) |
| { |
| return dqm->dev->shared_resources.num_queue_per_pipe; |
| } |
| |
| unsigned int get_pipes_per_mec(struct device_queue_manager *dqm) |
| { |
| return dqm->dev->shared_resources.num_pipe_per_mec; |
| } |
| |
| static unsigned int get_num_sdma_engines(struct device_queue_manager *dqm) |
| { |
| return dqm->dev->device_info->num_sdma_engines; |
| } |
| |
| unsigned int get_num_sdma_queues(struct device_queue_manager *dqm) |
| { |
| return dqm->dev->device_info->num_sdma_engines |
| * dqm->dev->device_info->num_sdma_queues_per_engine; |
| } |
| |
| void program_sh_mem_settings(struct device_queue_manager *dqm, |
| struct qcm_process_device *qpd) |
| { |
| return dqm->dev->kfd2kgd->program_sh_mem_settings( |
| dqm->dev->kgd, qpd->vmid, |
| qpd->sh_mem_config, |
| qpd->sh_mem_ape1_base, |
| qpd->sh_mem_ape1_limit, |
| qpd->sh_mem_bases); |
| } |
| |
| static int allocate_doorbell(struct qcm_process_device *qpd, struct queue *q) |
| { |
| struct kfd_dev *dev = qpd->dqm->dev; |
| |
| if (!KFD_IS_SOC15(dev->device_info->asic_family)) { |
| /* On pre-SOC15 chips we need to use the queue ID to |
| * preserve the user mode ABI. |
| */ |
| q->doorbell_id = q->properties.queue_id; |
| } else if (q->properties.type == KFD_QUEUE_TYPE_SDMA) { |
| /* For SDMA queues on SOC15, use static doorbell |
| * assignments based on the engine and queue. |
| */ |
| q->doorbell_id = dev->shared_resources.sdma_doorbell |
| [q->properties.sdma_engine_id] |
| [q->properties.sdma_queue_id]; |
| } else { |
| /* For CP queues on SOC15 reserve a free doorbell ID */ |
| unsigned int found; |
| |
| found = find_first_zero_bit(qpd->doorbell_bitmap, |
| KFD_MAX_NUM_OF_QUEUES_PER_PROCESS); |
| if (found >= KFD_MAX_NUM_OF_QUEUES_PER_PROCESS) { |
| pr_debug("No doorbells available"); |
| return -EBUSY; |
| } |
| set_bit(found, qpd->doorbell_bitmap); |
| q->doorbell_id = found; |
| } |
| |
| q->properties.doorbell_off = |
| kfd_doorbell_id_to_offset(dev, q->process, |
| q->doorbell_id); |
| |
| return 0; |
| } |
| |
| static void deallocate_doorbell(struct qcm_process_device *qpd, |
| struct queue *q) |
| { |
| unsigned int old; |
| struct kfd_dev *dev = qpd->dqm->dev; |
| |
| if (!KFD_IS_SOC15(dev->device_info->asic_family) || |
| q->properties.type == KFD_QUEUE_TYPE_SDMA) |
| return; |
| |
| old = test_and_clear_bit(q->doorbell_id, qpd->doorbell_bitmap); |
| WARN_ON(!old); |
| } |
| |
| static int allocate_vmid(struct device_queue_manager *dqm, |
| struct qcm_process_device *qpd, |
| struct queue *q) |
| { |
| int bit, allocated_vmid; |
| |
| if (dqm->vmid_bitmap == 0) |
| return -ENOMEM; |
| |
| bit = ffs(dqm->vmid_bitmap) - 1; |
| dqm->vmid_bitmap &= ~(1 << bit); |
| |
| allocated_vmid = bit + dqm->dev->vm_info.first_vmid_kfd; |
| pr_debug("vmid allocation %d\n", allocated_vmid); |
| qpd->vmid = allocated_vmid; |
| q->properties.vmid = allocated_vmid; |
| |
| set_pasid_vmid_mapping(dqm, q->process->pasid, q->properties.vmid); |
| program_sh_mem_settings(dqm, qpd); |
| |
| /* qpd->page_table_base is set earlier when register_process() |
| * is called, i.e. when the first queue is created. |
| */ |
| dqm->dev->kfd2kgd->set_vm_context_page_table_base(dqm->dev->kgd, |
| qpd->vmid, |
| qpd->page_table_base); |
| /* invalidate the VM context after pasid and vmid mapping is set up */ |
| kfd_flush_tlb(qpd_to_pdd(qpd)); |
| |
| return 0; |
| } |
| |
| static int flush_texture_cache_nocpsch(struct kfd_dev *kdev, |
| struct qcm_process_device *qpd) |
| { |
| const struct packet_manager_funcs *pmf = qpd->dqm->packets.pmf; |
| int ret; |
| |
| if (!qpd->ib_kaddr) |
| return -ENOMEM; |
| |
| ret = pmf->release_mem(qpd->ib_base, (uint32_t *)qpd->ib_kaddr); |
| if (ret) |
| return ret; |
| |
| return amdgpu_amdkfd_submit_ib(kdev->kgd, KGD_ENGINE_MEC1, qpd->vmid, |
| qpd->ib_base, (uint32_t *)qpd->ib_kaddr, |
| pmf->release_mem_size / sizeof(uint32_t)); |
| } |
| |
| static void deallocate_vmid(struct device_queue_manager *dqm, |
| struct qcm_process_device *qpd, |
| struct queue *q) |
| { |
| int bit = qpd->vmid - dqm->dev->vm_info.first_vmid_kfd; |
| |
| /* On GFX v7, CP doesn't flush TC at dequeue */ |
| if (q->device->device_info->asic_family == CHIP_HAWAII) |
| if (flush_texture_cache_nocpsch(q->device, qpd)) |
| pr_err("Failed to flush TC\n"); |
| |
| kfd_flush_tlb(qpd_to_pdd(qpd)); |
| |
| /* Release the vmid mapping */ |
| set_pasid_vmid_mapping(dqm, 0, qpd->vmid); |
| |
| dqm->vmid_bitmap |= (1 << bit); |
| qpd->vmid = 0; |
| q->properties.vmid = 0; |
| } |
| |
| static int create_queue_nocpsch(struct device_queue_manager *dqm, |
| struct queue *q, |
| struct qcm_process_device *qpd) |
| { |
| int retval; |
| |
| print_queue(q); |
| |
| dqm_lock(dqm); |
| |
| if (dqm->total_queue_count >= max_num_of_queues_per_device) { |
| pr_warn("Can't create new usermode queue because %d queues were already created\n", |
| dqm->total_queue_count); |
| retval = -EPERM; |
| goto out_unlock; |
| } |
| |
| if (list_empty(&qpd->queues_list)) { |
| retval = allocate_vmid(dqm, qpd, q); |
| if (retval) |
| goto out_unlock; |
| } |
| q->properties.vmid = qpd->vmid; |
| /* |
| * Eviction state logic: we only mark active queues as evicted |
| * to avoid the overhead of restoring inactive queues later |
| */ |
| if (qpd->evicted) |
| q->properties.is_evicted = (q->properties.queue_size > 0 && |
| q->properties.queue_percent > 0 && |
| q->properties.queue_address != 0); |
| |
| q->properties.tba_addr = qpd->tba_addr; |
| q->properties.tma_addr = qpd->tma_addr; |
| |
| if (q->properties.type == KFD_QUEUE_TYPE_COMPUTE) |
| retval = create_compute_queue_nocpsch(dqm, q, qpd); |
| else if (q->properties.type == KFD_QUEUE_TYPE_SDMA) |
| retval = create_sdma_queue_nocpsch(dqm, q, qpd); |
| else |
| retval = -EINVAL; |
| |
| if (retval) { |
| if (list_empty(&qpd->queues_list)) |
| deallocate_vmid(dqm, qpd, q); |
| goto out_unlock; |
| } |
| |
| list_add(&q->list, &qpd->queues_list); |
| qpd->queue_count++; |
| if (q->properties.is_active) |
| dqm->queue_count++; |
| |
| if (q->properties.type == KFD_QUEUE_TYPE_SDMA) |
| dqm->sdma_queue_count++; |
| |
| /* |
| * Unconditionally increment this counter, regardless of the queue's |
| * type or whether the queue is active. |
| */ |
| dqm->total_queue_count++; |
| pr_debug("Total of %d queues are accountable so far\n", |
| dqm->total_queue_count); |
| |
| out_unlock: |
| dqm_unlock(dqm); |
| return retval; |
| } |
| |
| static int allocate_hqd(struct device_queue_manager *dqm, struct queue *q) |
| { |
| bool set; |
| int pipe, bit, i; |
| |
| set = false; |
| |
| for (pipe = dqm->next_pipe_to_allocate, i = 0; |
| i < get_pipes_per_mec(dqm); |
| pipe = ((pipe + 1) % get_pipes_per_mec(dqm)), ++i) { |
| |
| if (!is_pipe_enabled(dqm, 0, pipe)) |
| continue; |
| |
| if (dqm->allocated_queues[pipe] != 0) { |
| bit = ffs(dqm->allocated_queues[pipe]) - 1; |
| dqm->allocated_queues[pipe] &= ~(1 << bit); |
| q->pipe = pipe; |
| q->queue = bit; |
| set = true; |
| break; |
| } |
| } |
| |
| if (!set) |
| return -EBUSY; |
| |
| pr_debug("hqd slot - pipe %d, queue %d\n", q->pipe, q->queue); |
| /* horizontal hqd allocation */ |
| dqm->next_pipe_to_allocate = (pipe + 1) % get_pipes_per_mec(dqm); |
| |
| return 0; |
| } |
| |
| static inline void deallocate_hqd(struct device_queue_manager *dqm, |
| struct queue *q) |
| { |
| dqm->allocated_queues[q->pipe] |= (1 << q->queue); |
| } |
| |
| static int create_compute_queue_nocpsch(struct device_queue_manager *dqm, |
| struct queue *q, |
| struct qcm_process_device *qpd) |
| { |
| struct mqd_manager *mqd_mgr; |
| int retval; |
| |
| mqd_mgr = dqm->ops.get_mqd_manager(dqm, KFD_MQD_TYPE_COMPUTE); |
| if (!mqd_mgr) |
| return -ENOMEM; |
| |
| retval = allocate_hqd(dqm, q); |
| if (retval) |
| return retval; |
| |
| retval = allocate_doorbell(qpd, q); |
| if (retval) |
| goto out_deallocate_hqd; |
| |
| retval = mqd_mgr->init_mqd(mqd_mgr, &q->mqd, &q->mqd_mem_obj, |
| &q->gart_mqd_addr, &q->properties); |
| if (retval) |
| goto out_deallocate_doorbell; |
| |
| pr_debug("Loading mqd to hqd on pipe %d, queue %d\n", |
| q->pipe, q->queue); |
| |
| dqm->dev->kfd2kgd->set_scratch_backing_va( |
| dqm->dev->kgd, qpd->sh_hidden_private_base, qpd->vmid); |
| |
| if (!q->properties.is_active) |
| return 0; |
| |
| if (WARN(q->process->mm != current->mm, |
| "should only run in user thread")) |
| retval = -EFAULT; |
| else |
| retval = mqd_mgr->load_mqd(mqd_mgr, q->mqd, q->pipe, q->queue, |
| &q->properties, current->mm); |
| if (retval) |
| goto out_uninit_mqd; |
| |
| return 0; |
| |
| out_uninit_mqd: |
| mqd_mgr->uninit_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj); |
| out_deallocate_doorbell: |
| deallocate_doorbell(qpd, q); |
| out_deallocate_hqd: |
| deallocate_hqd(dqm, q); |
| |
| return retval; |
| } |
| |
| /* Access to DQM has to be locked before calling destroy_queue_nocpsch_locked |
| * to avoid asynchronized access |
| */ |
| static int destroy_queue_nocpsch_locked(struct device_queue_manager *dqm, |
| struct qcm_process_device *qpd, |
| struct queue *q) |
| { |
| int retval; |
| struct mqd_manager *mqd_mgr; |
| |
| mqd_mgr = dqm->ops.get_mqd_manager(dqm, |
| get_mqd_type_from_queue_type(q->properties.type)); |
| if (!mqd_mgr) |
| return -ENOMEM; |
| |
| if (q->properties.type == KFD_QUEUE_TYPE_COMPUTE) { |
| deallocate_hqd(dqm, q); |
| } else if (q->properties.type == KFD_QUEUE_TYPE_SDMA) { |
| dqm->sdma_queue_count--; |
| deallocate_sdma_queue(dqm, q->sdma_id); |
| } else { |
| pr_debug("q->properties.type %d is invalid\n", |
| q->properties.type); |
| return -EINVAL; |
| } |
| dqm->total_queue_count--; |
| |
| deallocate_doorbell(qpd, q); |
| |
| retval = mqd_mgr->destroy_mqd(mqd_mgr, q->mqd, |
| KFD_PREEMPT_TYPE_WAVEFRONT_RESET, |
| KFD_UNMAP_LATENCY_MS, |
| q->pipe, q->queue); |
| if (retval == -ETIME) |
| qpd->reset_wavefronts = true; |
| |
| mqd_mgr->uninit_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj); |
| |
| list_del(&q->list); |
| if (list_empty(&qpd->queues_list)) { |
| if (qpd->reset_wavefronts) { |
| pr_warn("Resetting wave fronts (nocpsch) on dev %p\n", |
| dqm->dev); |
| /* dbgdev_wave_reset_wavefronts has to be called before |
| * deallocate_vmid(), i.e. when vmid is still in use. |
| */ |
| dbgdev_wave_reset_wavefronts(dqm->dev, |
| qpd->pqm->process); |
| qpd->reset_wavefronts = false; |
| } |
| |
| deallocate_vmid(dqm, qpd, q); |
| } |
| qpd->queue_count--; |
| if (q->properties.is_active) |
| dqm->queue_count--; |
| |
| return retval; |
| } |
| |
| static int destroy_queue_nocpsch(struct device_queue_manager *dqm, |
| struct qcm_process_device *qpd, |
| struct queue *q) |
| { |
| int retval; |
| |
| dqm_lock(dqm); |
| retval = destroy_queue_nocpsch_locked(dqm, qpd, q); |
| dqm_unlock(dqm); |
| |
| return retval; |
| } |
| |
| static int update_queue(struct device_queue_manager *dqm, struct queue *q) |
| { |
| int retval; |
| struct mqd_manager *mqd_mgr; |
| struct kfd_process_device *pdd; |
| bool prev_active = false; |
| |
| dqm_lock(dqm); |
| pdd = kfd_get_process_device_data(q->device, q->process); |
| if (!pdd) { |
| retval = -ENODEV; |
| goto out_unlock; |
| } |
| mqd_mgr = dqm->ops.get_mqd_manager(dqm, |
| get_mqd_type_from_queue_type(q->properties.type)); |
| if (!mqd_mgr) { |
| retval = -ENOMEM; |
| goto out_unlock; |
| } |
| /* |
| * Eviction state logic: we only mark active queues as evicted |
| * to avoid the overhead of restoring inactive queues later |
| */ |
| if (pdd->qpd.evicted) |
| q->properties.is_evicted = (q->properties.queue_size > 0 && |
| q->properties.queue_percent > 0 && |
| q->properties.queue_address != 0); |
| |
| /* Save previous activity state for counters */ |
| prev_active = q->properties.is_active; |
| |
| /* Make sure the queue is unmapped before updating the MQD */ |
| if (dqm->sched_policy != KFD_SCHED_POLICY_NO_HWS) { |
| retval = unmap_queues_cpsch(dqm, |
| KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES, 0); |
| if (retval) { |
| pr_err("unmap queue failed\n"); |
| goto out_unlock; |
| } |
| } else if (prev_active && |
| (q->properties.type == KFD_QUEUE_TYPE_COMPUTE || |
| q->properties.type == KFD_QUEUE_TYPE_SDMA)) { |
| retval = mqd_mgr->destroy_mqd(mqd_mgr, q->mqd, |
| KFD_PREEMPT_TYPE_WAVEFRONT_DRAIN, |
| KFD_UNMAP_LATENCY_MS, q->pipe, q->queue); |
| if (retval) { |
| pr_err("destroy mqd failed\n"); |
| goto out_unlock; |
| } |
| } |
| |
| retval = mqd_mgr->update_mqd(mqd_mgr, q->mqd, &q->properties); |
| |
| /* |
| * check active state vs. the previous state and modify |
| * counter accordingly. map_queues_cpsch uses the |
| * dqm->queue_count to determine whether a new runlist must be |
| * uploaded. |
| */ |
| if (q->properties.is_active && !prev_active) |
| dqm->queue_count++; |
| else if (!q->properties.is_active && prev_active) |
| dqm->queue_count--; |
| |
| if (dqm->sched_policy != KFD_SCHED_POLICY_NO_HWS) |
| retval = map_queues_cpsch(dqm); |
| else if (q->properties.is_active && |
| (q->properties.type == KFD_QUEUE_TYPE_COMPUTE || |
| q->properties.type == KFD_QUEUE_TYPE_SDMA)) { |
| if (WARN(q->process->mm != current->mm, |
| "should only run in user thread")) |
| retval = -EFAULT; |
| else |
| retval = mqd_mgr->load_mqd(mqd_mgr, q->mqd, |
| q->pipe, q->queue, |
| &q->properties, current->mm); |
| } |
| |
| out_unlock: |
| dqm_unlock(dqm); |
| return retval; |
| } |
| |
| static struct mqd_manager *get_mqd_manager( |
| struct device_queue_manager *dqm, enum KFD_MQD_TYPE type) |
| { |
| struct mqd_manager *mqd_mgr; |
| |
| if (WARN_ON(type >= KFD_MQD_TYPE_MAX)) |
| return NULL; |
| |
| pr_debug("mqd type %d\n", type); |
| |
| mqd_mgr = dqm->mqd_mgrs[type]; |
| if (!mqd_mgr) { |
| mqd_mgr = mqd_manager_init(type, dqm->dev); |
| if (!mqd_mgr) |
| pr_err("mqd manager is NULL"); |
| dqm->mqd_mgrs[type] = mqd_mgr; |
| } |
| |
| return mqd_mgr; |
| } |
| |
| static int evict_process_queues_nocpsch(struct device_queue_manager *dqm, |
| struct qcm_process_device *qpd) |
| { |
| struct queue *q; |
| struct mqd_manager *mqd_mgr; |
| struct kfd_process_device *pdd; |
| int retval = 0; |
| |
| dqm_lock(dqm); |
| if (qpd->evicted++ > 0) /* already evicted, do nothing */ |
| goto out; |
| |
| pdd = qpd_to_pdd(qpd); |
| pr_info_ratelimited("Evicting PASID %u queues\n", |
| pdd->process->pasid); |
| |
| /* unactivate all active queues on the qpd */ |
| list_for_each_entry(q, &qpd->queues_list, list) { |
| if (!q->properties.is_active) |
| continue; |
| mqd_mgr = dqm->ops.get_mqd_manager(dqm, |
| get_mqd_type_from_queue_type(q->properties.type)); |
| if (!mqd_mgr) { /* should not be here */ |
| pr_err("Cannot evict queue, mqd mgr is NULL\n"); |
| retval = -ENOMEM; |
| goto out; |
| } |
| q->properties.is_evicted = true; |
| q->properties.is_active = false; |
| retval = mqd_mgr->destroy_mqd(mqd_mgr, q->mqd, |
| KFD_PREEMPT_TYPE_WAVEFRONT_DRAIN, |
| KFD_UNMAP_LATENCY_MS, q->pipe, q->queue); |
| if (retval) |
| goto out; |
| dqm->queue_count--; |
| } |
| |
| out: |
| dqm_unlock(dqm); |
| return retval; |
| } |
| |
| static int evict_process_queues_cpsch(struct device_queue_manager *dqm, |
| struct qcm_process_device *qpd) |
| { |
| struct queue *q; |
| struct kfd_process_device *pdd; |
| int retval = 0; |
| |
| dqm_lock(dqm); |
| if (qpd->evicted++ > 0) /* already evicted, do nothing */ |
| goto out; |
| |
| pdd = qpd_to_pdd(qpd); |
| pr_info_ratelimited("Evicting PASID %u queues\n", |
| pdd->process->pasid); |
| |
| /* unactivate all active queues on the qpd */ |
| list_for_each_entry(q, &qpd->queues_list, list) { |
| if (!q->properties.is_active) |
| continue; |
| q->properties.is_evicted = true; |
| q->properties.is_active = false; |
| dqm->queue_count--; |
| } |
| retval = execute_queues_cpsch(dqm, |
| qpd->is_debug ? |
| KFD_UNMAP_QUEUES_FILTER_ALL_QUEUES : |
| KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES, 0); |
| |
| out: |
| dqm_unlock(dqm); |
| return retval; |
| } |
| |
| static int restore_process_queues_nocpsch(struct device_queue_manager *dqm, |
| struct qcm_process_device *qpd) |
| { |
| struct mm_struct *mm = NULL; |
| struct queue *q; |
| struct mqd_manager *mqd_mgr; |
| struct kfd_process_device *pdd; |
| uint64_t pd_base; |
| int retval = 0; |
| |
| pdd = qpd_to_pdd(qpd); |
| /* Retrieve PD base */ |
| pd_base = amdgpu_amdkfd_gpuvm_get_process_page_dir(pdd->vm); |
| |
| dqm_lock(dqm); |
| if (WARN_ON_ONCE(!qpd->evicted)) /* already restored, do nothing */ |
| goto out; |
| if (qpd->evicted > 1) { /* ref count still > 0, decrement & quit */ |
| qpd->evicted--; |
| goto out; |
| } |
| |
| pr_info_ratelimited("Restoring PASID %u queues\n", |
| pdd->process->pasid); |
| |
| /* Update PD Base in QPD */ |
| qpd->page_table_base = pd_base; |
| pr_debug("Updated PD address to 0x%llx\n", pd_base); |
| |
| if (!list_empty(&qpd->queues_list)) { |
| dqm->dev->kfd2kgd->set_vm_context_page_table_base( |
| dqm->dev->kgd, |
| qpd->vmid, |
| qpd->page_table_base); |
| kfd_flush_tlb(pdd); |
| } |
| |
| /* Take a safe reference to the mm_struct, which may otherwise |
| * disappear even while the kfd_process is still referenced. |
| */ |
| mm = get_task_mm(pdd->process->lead_thread); |
| if (!mm) { |
| retval = -EFAULT; |
| goto out; |
| } |
| |
| /* activate all active queues on the qpd */ |
| list_for_each_entry(q, &qpd->queues_list, list) { |
| if (!q->properties.is_evicted) |
| continue; |
| mqd_mgr = dqm->ops.get_mqd_manager(dqm, |
| get_mqd_type_from_queue_type(q->properties.type)); |
| if (!mqd_mgr) { /* should not be here */ |
| pr_err("Cannot restore queue, mqd mgr is NULL\n"); |
| retval = -ENOMEM; |
| goto out; |
| } |
| q->properties.is_evicted = false; |
| q->properties.is_active = true; |
| retval = mqd_mgr->load_mqd(mqd_mgr, q->mqd, q->pipe, |
| q->queue, &q->properties, mm); |
| if (retval) |
| goto out; |
| dqm->queue_count++; |
| } |
| qpd->evicted = 0; |
| out: |
| if (mm) |
| mmput(mm); |
| dqm_unlock(dqm); |
| return retval; |
| } |
| |
| static int restore_process_queues_cpsch(struct device_queue_manager *dqm, |
| struct qcm_process_device *qpd) |
| { |
| struct queue *q; |
| struct kfd_process_device *pdd; |
| uint64_t pd_base; |
| int retval = 0; |
| |
| pdd = qpd_to_pdd(qpd); |
| /* Retrieve PD base */ |
| pd_base = amdgpu_amdkfd_gpuvm_get_process_page_dir(pdd->vm); |
| |
| dqm_lock(dqm); |
| if (WARN_ON_ONCE(!qpd->evicted)) /* already restored, do nothing */ |
| goto out; |
| if (qpd->evicted > 1) { /* ref count still > 0, decrement & quit */ |
| qpd->evicted--; |
| goto out; |
| } |
| |
| pr_info_ratelimited("Restoring PASID %u queues\n", |
| pdd->process->pasid); |
| |
| /* Update PD Base in QPD */ |
| qpd->page_table_base = pd_base; |
| pr_debug("Updated PD address to 0x%llx\n", pd_base); |
| |
| /* activate all active queues on the qpd */ |
| list_for_each_entry(q, &qpd->queues_list, list) { |
| if (!q->properties.is_evicted) |
| continue; |
| q->properties.is_evicted = false; |
| q->properties.is_active = true; |
| dqm->queue_count++; |
| } |
| retval = execute_queues_cpsch(dqm, |
| KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES, 0); |
| if (!retval) |
| qpd->evicted = 0; |
| out: |
| dqm_unlock(dqm); |
| return retval; |
| } |
| |
| static int register_process(struct device_queue_manager *dqm, |
| struct qcm_process_device *qpd) |
| { |
| struct device_process_node *n; |
| struct kfd_process_device *pdd; |
| uint64_t pd_base; |
| int retval; |
| |
| n = kzalloc(sizeof(*n), GFP_KERNEL); |
| if (!n) |
| return -ENOMEM; |
| |
| n->qpd = qpd; |
| |
| pdd = qpd_to_pdd(qpd); |
| /* Retrieve PD base */ |
| pd_base = amdgpu_amdkfd_gpuvm_get_process_page_dir(pdd->vm); |
| |
| dqm_lock(dqm); |
| list_add(&n->list, &dqm->queues); |
| |
| /* Update PD Base in QPD */ |
| qpd->page_table_base = pd_base; |
| pr_debug("Updated PD address to 0x%llx\n", pd_base); |
| |
| retval = dqm->asic_ops.update_qpd(dqm, qpd); |
| |
| if (dqm->processes_count++ == 0) |
| amdgpu_amdkfd_set_compute_idle(dqm->dev->kgd, false); |
| |
| dqm_unlock(dqm); |
| |
| return retval; |
| } |
| |
| static int unregister_process(struct device_queue_manager *dqm, |
| struct qcm_process_device *qpd) |
| { |
| int retval; |
| struct device_process_node *cur, *next; |
| |
| pr_debug("qpd->queues_list is %s\n", |
| list_empty(&qpd->queues_list) ? "empty" : "not empty"); |
| |
| retval = 0; |
| dqm_lock(dqm); |
| |
| list_for_each_entry_safe(cur, next, &dqm->queues, list) { |
| if (qpd == cur->qpd) { |
| list_del(&cur->list); |
| kfree(cur); |
| if (--dqm->processes_count == 0) |
| amdgpu_amdkfd_set_compute_idle( |
| dqm->dev->kgd, true); |
| goto out; |
| } |
| } |
| /* qpd not found in dqm list */ |
| retval = 1; |
| out: |
| dqm_unlock(dqm); |
| return retval; |
| } |
| |
| static int |
| set_pasid_vmid_mapping(struct device_queue_manager *dqm, unsigned int pasid, |
| unsigned int vmid) |
| { |
| return dqm->dev->kfd2kgd->set_pasid_vmid_mapping( |
| dqm->dev->kgd, pasid, vmid); |
| } |
| |
| static void init_interrupts(struct device_queue_manager *dqm) |
| { |
| unsigned int i; |
| |
| for (i = 0 ; i < get_pipes_per_mec(dqm) ; i++) |
| if (is_pipe_enabled(dqm, 0, i)) |
| dqm->dev->kfd2kgd->init_interrupts(dqm->dev->kgd, i); |
| } |
| |
| static int initialize_nocpsch(struct device_queue_manager *dqm) |
| { |
| int pipe, queue; |
| |
| pr_debug("num of pipes: %d\n", get_pipes_per_mec(dqm)); |
| |
| dqm->allocated_queues = kcalloc(get_pipes_per_mec(dqm), |
| sizeof(unsigned int), GFP_KERNEL); |
| if (!dqm->allocated_queues) |
| return -ENOMEM; |
| |
| mutex_init(&dqm->lock_hidden); |
| INIT_LIST_HEAD(&dqm->queues); |
| dqm->queue_count = dqm->next_pipe_to_allocate = 0; |
| dqm->sdma_queue_count = 0; |
| |
| for (pipe = 0; pipe < get_pipes_per_mec(dqm); pipe++) { |
| int pipe_offset = pipe * get_queues_per_pipe(dqm); |
| |
| for (queue = 0; queue < get_queues_per_pipe(dqm); queue++) |
| if (test_bit(pipe_offset + queue, |
| dqm->dev->shared_resources.queue_bitmap)) |
| dqm->allocated_queues[pipe] |= 1 << queue; |
| } |
| |
| dqm->vmid_bitmap = (1 << dqm->dev->vm_info.vmid_num_kfd) - 1; |
| dqm->sdma_bitmap = (1 << get_num_sdma_queues(dqm)) - 1; |
| |
| return 0; |
| } |
| |
| static void uninitialize(struct device_queue_manager *dqm) |
| { |
| int i; |
| |
| WARN_ON(dqm->queue_count > 0 || dqm->processes_count > 0); |
| |
| kfree(dqm->allocated_queues); |
| for (i = 0 ; i < KFD_MQD_TYPE_MAX ; i++) |
| kfree(dqm->mqd_mgrs[i]); |
| mutex_destroy(&dqm->lock_hidden); |
| kfd_gtt_sa_free(dqm->dev, dqm->pipeline_mem); |
| } |
| |
| static int start_nocpsch(struct device_queue_manager *dqm) |
| { |
| init_interrupts(dqm); |
| return pm_init(&dqm->packets, dqm); |
| } |
| |
| static int stop_nocpsch(struct device_queue_manager *dqm) |
| { |
| pm_uninit(&dqm->packets); |
| return 0; |
| } |
| |
| static int allocate_sdma_queue(struct device_queue_manager *dqm, |
| unsigned int *sdma_queue_id) |
| { |
| int bit; |
| |
| if (dqm->sdma_bitmap == 0) |
| return -ENOMEM; |
| |
| bit = ffs(dqm->sdma_bitmap) - 1; |
| dqm->sdma_bitmap &= ~(1 << bit); |
| *sdma_queue_id = bit; |
| |
| return 0; |
| } |
| |
| static void deallocate_sdma_queue(struct device_queue_manager *dqm, |
| unsigned int sdma_queue_id) |
| { |
| if (sdma_queue_id >= get_num_sdma_queues(dqm)) |
| return; |
| dqm->sdma_bitmap |= (1 << sdma_queue_id); |
| } |
| |
| static int create_sdma_queue_nocpsch(struct device_queue_manager *dqm, |
| struct queue *q, |
| struct qcm_process_device *qpd) |
| { |
| struct mqd_manager *mqd_mgr; |
| int retval; |
| |
| mqd_mgr = dqm->ops.get_mqd_manager(dqm, KFD_MQD_TYPE_SDMA); |
| if (!mqd_mgr) |
| return -ENOMEM; |
| |
| retval = allocate_sdma_queue(dqm, &q->sdma_id); |
| if (retval) |
| return retval; |
| |
| q->properties.sdma_queue_id = q->sdma_id / get_num_sdma_engines(dqm); |
| q->properties.sdma_engine_id = q->sdma_id % get_num_sdma_engines(dqm); |
| |
| retval = allocate_doorbell(qpd, q); |
| if (retval) |
| goto out_deallocate_sdma_queue; |
| |
| pr_debug("SDMA id is: %d\n", q->sdma_id); |
| pr_debug("SDMA queue id: %d\n", q->properties.sdma_queue_id); |
| pr_debug("SDMA engine id: %d\n", q->properties.sdma_engine_id); |
| |
| dqm->asic_ops.init_sdma_vm(dqm, q, qpd); |
| retval = mqd_mgr->init_mqd(mqd_mgr, &q->mqd, &q->mqd_mem_obj, |
| &q->gart_mqd_addr, &q->properties); |
| if (retval) |
| goto out_deallocate_doorbell; |
| |
| retval = mqd_mgr->load_mqd(mqd_mgr, q->mqd, 0, 0, &q->properties, |
| NULL); |
| if (retval) |
| goto out_uninit_mqd; |
| |
| return 0; |
| |
| out_uninit_mqd: |
| mqd_mgr->uninit_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj); |
| out_deallocate_doorbell: |
| deallocate_doorbell(qpd, q); |
| out_deallocate_sdma_queue: |
| deallocate_sdma_queue(dqm, q->sdma_id); |
| |
| return retval; |
| } |
| |
| /* |
| * Device Queue Manager implementation for cp scheduler |
| */ |
| |
| static int set_sched_resources(struct device_queue_manager *dqm) |
| { |
| int i, mec; |
| struct scheduling_resources res; |
| |
| res.vmid_mask = dqm->dev->shared_resources.compute_vmid_bitmap; |
| |
| res.queue_mask = 0; |
| for (i = 0; i < KGD_MAX_QUEUES; ++i) { |
| mec = (i / dqm->dev->shared_resources.num_queue_per_pipe) |
| / dqm->dev->shared_resources.num_pipe_per_mec; |
| |
| if (!test_bit(i, dqm->dev->shared_resources.queue_bitmap)) |
| continue; |
| |
| /* only acquire queues from the first MEC */ |
| if (mec > 0) |
| continue; |
| |
| /* This situation may be hit in the future if a new HW |
| * generation exposes more than 64 queues. If so, the |
| * definition of res.queue_mask needs updating |
| */ |
| if (WARN_ON(i >= (sizeof(res.queue_mask)*8))) { |
| pr_err("Invalid queue enabled by amdgpu: %d\n", i); |
| break; |
| } |
| |
| res.queue_mask |= (1ull << i); |
| } |
| res.gws_mask = res.oac_mask = res.gds_heap_base = |
| res.gds_heap_size = 0; |
| |
| pr_debug("Scheduling resources:\n" |
| "vmid mask: 0x%8X\n" |
| "queue mask: 0x%8llX\n", |
| res.vmid_mask, res.queue_mask); |
| |
| return pm_send_set_resources(&dqm->packets, &res); |
| } |
| |
| static int initialize_cpsch(struct device_queue_manager *dqm) |
| { |
| pr_debug("num of pipes: %d\n", get_pipes_per_mec(dqm)); |
| |
| mutex_init(&dqm->lock_hidden); |
| INIT_LIST_HEAD(&dqm->queues); |
| dqm->queue_count = dqm->processes_count = 0; |
| dqm->sdma_queue_count = 0; |
| dqm->active_runlist = false; |
| dqm->sdma_bitmap = (1 << get_num_sdma_queues(dqm)) - 1; |
| |
| INIT_WORK(&dqm->hw_exception_work, kfd_process_hw_exception); |
| |
| return 0; |
| } |
| |
| static int start_cpsch(struct device_queue_manager *dqm) |
| { |
| int retval; |
| |
| retval = 0; |
| |
| retval = pm_init(&dqm->packets, dqm); |
| if (retval) |
| goto fail_packet_manager_init; |
| |
| retval = set_sched_resources(dqm); |
| if (retval) |
| goto fail_set_sched_resources; |
| |
| pr_debug("Allocating fence memory\n"); |
| |
| /* allocate fence memory on the gart */ |
| retval = kfd_gtt_sa_allocate(dqm->dev, sizeof(*dqm->fence_addr), |
| &dqm->fence_mem); |
| |
| if (retval) |
| goto fail_allocate_vidmem; |
| |
| dqm->fence_addr = dqm->fence_mem->cpu_ptr; |
| dqm->fence_gpu_addr = dqm->fence_mem->gpu_addr; |
| |
| init_interrupts(dqm); |
| |
| dqm_lock(dqm); |
| /* clear hang status when driver try to start the hw scheduler */ |
| dqm->is_hws_hang = false; |
| execute_queues_cpsch(dqm, KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES, 0); |
| dqm_unlock(dqm); |
| |
| return 0; |
| fail_allocate_vidmem: |
| fail_set_sched_resources: |
| pm_uninit(&dqm->packets); |
| fail_packet_manager_init: |
| return retval; |
| } |
| |
| static int stop_cpsch(struct device_queue_manager *dqm) |
| { |
| dqm_lock(dqm); |
| unmap_queues_cpsch(dqm, KFD_UNMAP_QUEUES_FILTER_ALL_QUEUES, 0); |
| dqm_unlock(dqm); |
| |
| kfd_gtt_sa_free(dqm->dev, dqm->fence_mem); |
| pm_uninit(&dqm->packets); |
| |
| return 0; |
| } |
| |
| static int create_kernel_queue_cpsch(struct device_queue_manager *dqm, |
| struct kernel_queue *kq, |
| struct qcm_process_device *qpd) |
| { |
| dqm_lock(dqm); |
| if (dqm->total_queue_count >= max_num_of_queues_per_device) { |
| pr_warn("Can't create new kernel queue because %d queues were already created\n", |
| dqm->total_queue_count); |
| dqm_unlock(dqm); |
| return -EPERM; |
| } |
| |
| /* |
| * Unconditionally increment this counter, regardless of the queue's |
| * type or whether the queue is active. |
| */ |
| dqm->total_queue_count++; |
| pr_debug("Total of %d queues are accountable so far\n", |
| dqm->total_queue_count); |
| |
| list_add(&kq->list, &qpd->priv_queue_list); |
| dqm->queue_count++; |
| qpd->is_debug = true; |
| execute_queues_cpsch(dqm, KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES, 0); |
| dqm_unlock(dqm); |
| |
| return 0; |
| } |
| |
| static void destroy_kernel_queue_cpsch(struct device_queue_manager *dqm, |
| struct kernel_queue *kq, |
| struct qcm_process_device *qpd) |
| { |
| dqm_lock(dqm); |
| list_del(&kq->list); |
| dqm->queue_count--; |
| qpd->is_debug = false; |
| execute_queues_cpsch(dqm, KFD_UNMAP_QUEUES_FILTER_ALL_QUEUES, 0); |
| /* |
| * Unconditionally decrement this counter, regardless of the queue's |
| * type. |
| */ |
| dqm->total_queue_count--; |
| pr_debug("Total of %d queues are accountable so far\n", |
| dqm->total_queue_count); |
| dqm_unlock(dqm); |
| } |
| |
| static int create_queue_cpsch(struct device_queue_manager *dqm, struct queue *q, |
| struct qcm_process_device *qpd) |
| { |
| int retval; |
| struct mqd_manager *mqd_mgr; |
| |
| retval = 0; |
| |
| dqm_lock(dqm); |
| |
| if (dqm->total_queue_count >= max_num_of_queues_per_device) { |
| pr_warn("Can't create new usermode queue because %d queues were already created\n", |
| dqm->total_queue_count); |
| retval = -EPERM; |
| goto out_unlock; |
| } |
| |
| if (q->properties.type == KFD_QUEUE_TYPE_SDMA) { |
| retval = allocate_sdma_queue(dqm, &q->sdma_id); |
| if (retval) |
| goto out_unlock; |
| q->properties.sdma_queue_id = |
| q->sdma_id / get_num_sdma_engines(dqm); |
| q->properties.sdma_engine_id = |
| q->sdma_id % get_num_sdma_engines(dqm); |
| } |
| |
| retval = allocate_doorbell(qpd, q); |
| if (retval) |
| goto out_deallocate_sdma_queue; |
| |
| mqd_mgr = dqm->ops.get_mqd_manager(dqm, |
| get_mqd_type_from_queue_type(q->properties.type)); |
| |
| if (!mqd_mgr) { |
| retval = -ENOMEM; |
| goto out_deallocate_doorbell; |
| } |
| /* |
| * Eviction state logic: we only mark active queues as evicted |
| * to avoid the overhead of restoring inactive queues later |
| */ |
| if (qpd->evicted) |
| q->properties.is_evicted = (q->properties.queue_size > 0 && |
| q->properties.queue_percent > 0 && |
| q->properties.queue_address != 0); |
| |
| dqm->asic_ops.init_sdma_vm(dqm, q, qpd); |
| |
| q->properties.tba_addr = qpd->tba_addr; |
| q->properties.tma_addr = qpd->tma_addr; |
| retval = mqd_mgr->init_mqd(mqd_mgr, &q->mqd, &q->mqd_mem_obj, |
| &q->gart_mqd_addr, &q->properties); |
| if (retval) |
| goto out_deallocate_doorbell; |
| |
| list_add(&q->list, &qpd->queues_list); |
| qpd->queue_count++; |
| if (q->properties.is_active) { |
| dqm->queue_count++; |
| retval = execute_queues_cpsch(dqm, |
| KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES, 0); |
| } |
| |
| if (q->properties.type == KFD_QUEUE_TYPE_SDMA) |
| dqm->sdma_queue_count++; |
| /* |
| * Unconditionally increment this counter, regardless of the queue's |
| * type or whether the queue is active. |
| */ |
| dqm->total_queue_count++; |
| |
| pr_debug("Total of %d queues are accountable so far\n", |
| dqm->total_queue_count); |
| |
| dqm_unlock(dqm); |
| return retval; |
| |
| out_deallocate_doorbell: |
| deallocate_doorbell(qpd, q); |
| out_deallocate_sdma_queue: |
| if (q->properties.type == KFD_QUEUE_TYPE_SDMA) |
| deallocate_sdma_queue(dqm, q->sdma_id); |
| out_unlock: |
| dqm_unlock(dqm); |
| |
| return retval; |
| } |
| |
| int amdkfd_fence_wait_timeout(unsigned int *fence_addr, |
| unsigned int fence_value, |
| unsigned int timeout_ms) |
| { |
| unsigned long end_jiffies = msecs_to_jiffies(timeout_ms) + jiffies; |
| |
| while (*fence_addr != fence_value) { |
| if (time_after(jiffies, end_jiffies)) { |
| pr_err("qcm fence wait loop timeout expired\n"); |
| /* In HWS case, this is used to halt the driver thread |
| * in order not to mess up CP states before doing |
| * scandumps for FW debugging. |
| */ |
| while (halt_if_hws_hang) |
| schedule(); |
| |
| return -ETIME; |
| } |
| schedule(); |
| } |
| |
| return 0; |
| } |
| |
| static int unmap_sdma_queues(struct device_queue_manager *dqm, |
| unsigned int sdma_engine) |
| { |
| return pm_send_unmap_queue(&dqm->packets, KFD_QUEUE_TYPE_SDMA, |
| KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES, 0, false, |
| sdma_engine); |
| } |
| |
| /* dqm->lock mutex has to be locked before calling this function */ |
| static int map_queues_cpsch(struct device_queue_manager *dqm) |
| { |
| int retval; |
| |
| if (dqm->queue_count <= 0 || dqm->processes_count <= 0) |
| return 0; |
| |
| if (dqm->active_runlist) |
| return 0; |
| |
| retval = pm_send_runlist(&dqm->packets, &dqm->queues); |
| if (retval) { |
| pr_err("failed to execute runlist\n"); |
| return retval; |
| } |
| dqm->active_runlist = true; |
| |
| return retval; |
| } |
| |
| /* 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) |
| { |
| int retval = 0; |
| |
| if (dqm->is_hws_hang) |
| return -EIO; |
| if (!dqm->active_runlist) |
| return retval; |
| |
| pr_debug("Before destroying queues, sdma queue count is : %u\n", |
| dqm->sdma_queue_count); |
| |
| if (dqm->sdma_queue_count > 0) { |
| unmap_sdma_queues(dqm, 0); |
| unmap_sdma_queues(dqm, 1); |
| } |
| |
| retval = pm_send_unmap_queue(&dqm->packets, KFD_QUEUE_TYPE_COMPUTE, |
| filter, filter_param, false, 0); |
| if (retval) |
| return retval; |
| |
| *dqm->fence_addr = KFD_FENCE_INIT; |
| pm_send_query_status(&dqm->packets, dqm->fence_gpu_addr, |
| KFD_FENCE_COMPLETED); |
| /* should be timed out */ |
| retval = amdkfd_fence_wait_timeout(dqm->fence_addr, KFD_FENCE_COMPLETED, |
| QUEUE_PREEMPT_DEFAULT_TIMEOUT_MS); |
| if (retval) |
| return retval; |
| |
| pm_release_ib(&dqm->packets); |
| dqm->active_runlist = false; |
| |
| return retval; |
| } |
| |
| /* 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) |
| { |
| int retval; |
| |
| if (dqm->is_hws_hang) |
| return -EIO; |
| retval = unmap_queues_cpsch(dqm, filter, filter_param); |
| if (retval) { |
| pr_err("The cp might be in an unrecoverable state due to an unsuccessful queues preemption\n"); |
| dqm->is_hws_hang = true; |
| schedule_work(&dqm->hw_exception_work); |
| return retval; |
| } |
| |
| return map_queues_cpsch(dqm); |
| } |
| |
| static int destroy_queue_cpsch(struct device_queue_manager *dqm, |
| struct qcm_process_device *qpd, |
| struct queue *q) |
| { |
| int retval; |
| struct mqd_manager *mqd_mgr; |
| |
| retval = 0; |
| |
| /* remove queue from list to prevent rescheduling after preemption */ |
| dqm_lock(dqm); |
| |
| if (qpd->is_debug) { |
| /* |
| * error, currently we do not allow to destroy a queue |
| * of a currently debugged process |
| */ |
| retval = -EBUSY; |
| goto failed_try_destroy_debugged_queue; |
| |
| } |
| |
| mqd_mgr = dqm->ops.get_mqd_manager(dqm, |
| get_mqd_type_from_queue_type(q->properties.type)); |
| if (!mqd_mgr) { |
| retval = -ENOMEM; |
| goto failed; |
| } |
| |
| deallocate_doorbell(qpd, q); |
| |
| if (q->properties.type == KFD_QUEUE_TYPE_SDMA) { |
| dqm->sdma_queue_count--; |
| deallocate_sdma_queue(dqm, q->sdma_id); |
| } |
| |
| list_del(&q->list); |
| qpd->queue_count--; |
| if (q->properties.is_active) { |
| dqm->queue_count--; |
| retval = execute_queues_cpsch(dqm, |
| KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES, 0); |
| if (retval == -ETIME) |
| qpd->reset_wavefronts = true; |
| } |
| |
| mqd_mgr->uninit_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj); |
| |
| /* |
| * Unconditionally decrement this counter, regardless of the queue's |
| * type |
| */ |
| dqm->total_queue_count--; |
| pr_debug("Total of %d queues are accountable so far\n", |
| dqm->total_queue_count); |
| |
| dqm_unlock(dqm); |
| |
| return retval; |
| |
| failed: |
| failed_try_destroy_debugged_queue: |
| |
| dqm_unlock(dqm); |
| return retval; |
| } |
| |
| /* |
| * Low bits must be 0000/FFFF as required by HW, high bits must be 0 to |
| * stay in user mode. |
| */ |
| #define APE1_FIXED_BITS_MASK 0xFFFF80000000FFFFULL |
| /* APE1 limit is inclusive and 64K aligned. */ |
| #define APE1_LIMIT_ALIGNMENT 0xFFFF |
| |
| static bool set_cache_memory_policy(struct device_queue_manager *dqm, |
| struct qcm_process_device *qpd, |
| enum cache_policy default_policy, |
| enum cache_policy alternate_policy, |
| void __user *alternate_aperture_base, |
| uint64_t alternate_aperture_size) |
| { |
| bool retval = true; |
| |
| if (!dqm->asic_ops.set_cache_memory_policy) |
| return retval; |
| |
| dqm_lock(dqm); |
| |
| if (alternate_aperture_size == 0) { |
| /* base > limit disables APE1 */ |
| qpd->sh_mem_ape1_base = 1; |
| qpd->sh_mem_ape1_limit = 0; |
| } else { |
| /* |
| * In FSA64, APE1_Base[63:0] = { 16{SH_MEM_APE1_BASE[31]}, |
| * SH_MEM_APE1_BASE[31:0], 0x0000 } |
| * APE1_Limit[63:0] = { 16{SH_MEM_APE1_LIMIT[31]}, |
| * SH_MEM_APE1_LIMIT[31:0], 0xFFFF } |
| * Verify that the base and size parameters can be |
| * represented in this format and convert them. |
| * Additionally restrict APE1 to user-mode addresses. |
| */ |
| |
| uint64_t base = (uintptr_t)alternate_aperture_base; |
| uint64_t limit = base + alternate_aperture_size - 1; |
| |
| if (limit <= base || (base & APE1_FIXED_BITS_MASK) != 0 || |
| (limit & APE1_FIXED_BITS_MASK) != APE1_LIMIT_ALIGNMENT) { |
| retval = false; |
| goto out; |
| } |
| |
| qpd->sh_mem_ape1_base = base >> 16; |
| qpd->sh_mem_ape1_limit = limit >> 16; |
| } |
| |
| retval = dqm->asic_ops.set_cache_memory_policy( |
| dqm, |
| qpd, |
| default_policy, |
| alternate_policy, |
| alternate_aperture_base, |
| alternate_aperture_size); |
| |
| if ((dqm->sched_policy == KFD_SCHED_POLICY_NO_HWS) && (qpd->vmid != 0)) |
| program_sh_mem_settings(dqm, qpd); |
| |
| pr_debug("sh_mem_config: 0x%x, ape1_base: 0x%x, ape1_limit: 0x%x\n", |
| qpd->sh_mem_config, qpd->sh_mem_ape1_base, |
| qpd->sh_mem_ape1_limit); |
| |
| out: |
| dqm_unlock(dqm); |
| return retval; |
| } |
| |
| static int set_trap_handler(struct device_queue_manager *dqm, |
| struct qcm_process_device *qpd, |
| uint64_t tba_addr, |
| uint64_t tma_addr) |
| { |
| uint64_t *tma; |
| |
| if (dqm->dev->cwsr_enabled) { |
| /* Jump from CWSR trap handler to user trap */ |
| tma = (uint64_t *)(qpd->cwsr_kaddr + KFD_CWSR_TMA_OFFSET); |
| tma[0] = tba_addr; |
| tma[1] = tma_addr; |
| } else { |
| qpd->tba_addr = tba_addr; |
| qpd->tma_addr = tma_addr; |
| } |
| |
| return 0; |
| } |
| |
| static int process_termination_nocpsch(struct device_queue_manager *dqm, |
| struct qcm_process_device *qpd) |
| { |
| struct queue *q, *next; |
| struct device_process_node *cur, *next_dpn; |
| int retval = 0; |
| |
| dqm_lock(dqm); |
| |
| /* Clear all user mode queues */ |
| list_for_each_entry_safe(q, next, &qpd->queues_list, list) { |
| int ret; |
| |
| ret = destroy_queue_nocpsch_locked(dqm, qpd, q); |
| if (ret) |
| retval = ret; |
| } |
| |
| /* Unregister process */ |
| list_for_each_entry_safe(cur, next_dpn, &dqm->queues, list) { |
| if (qpd == cur->qpd) { |
| list_del(&cur->list); |
| kfree(cur); |
| dqm->processes_count--; |
| break; |
| } |
| } |
| |
| dqm_unlock(dqm); |
| return retval; |
| } |
| |
| static int get_wave_state(struct device_queue_manager *dqm, |
| struct queue *q, |
| void __user *ctl_stack, |
| u32 *ctl_stack_used_size, |
| u32 *save_area_used_size) |
| { |
| struct mqd_manager *mqd_mgr; |
| int r; |
| |
| dqm_lock(dqm); |
| |
| if (q->properties.type != KFD_QUEUE_TYPE_COMPUTE || |
| q->properties.is_active || !q->device->cwsr_enabled) { |
| r = -EINVAL; |
| goto dqm_unlock; |
| } |
| |
| mqd_mgr = dqm->ops.get_mqd_manager(dqm, KFD_MQD_TYPE_COMPUTE); |
| if (!mqd_mgr) { |
| r = -ENOMEM; |
| goto dqm_unlock; |
| } |
| |
| if (!mqd_mgr->get_wave_state) { |
| r = -EINVAL; |
| goto dqm_unlock; |
| } |
| |
| r = mqd_mgr->get_wave_state(mqd_mgr, q->mqd, ctl_stack, |
| ctl_stack_used_size, save_area_used_size); |
| |
| dqm_unlock: |
| dqm_unlock(dqm); |
| return r; |
| } |
| |
| static int process_termination_cpsch(struct device_queue_manager *dqm, |
| struct qcm_process_device *qpd) |
| { |
| int retval; |
| struct queue *q, *next; |
| struct kernel_queue *kq, *kq_next; |
| struct mqd_manager *mqd_mgr; |
| struct device_process_node *cur, *next_dpn; |
| enum kfd_unmap_queues_filter filter = |
| KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES; |
| |
| retval = 0; |
| |
| dqm_lock(dqm); |
| |
| /* Clean all kernel queues */ |
| list_for_each_entry_safe(kq, kq_next, &qpd->priv_queue_list, list) { |
| list_del(&kq->list); |
| dqm->queue_count--; |
| qpd->is_debug = false; |
| dqm->total_queue_count--; |
| filter = KFD_UNMAP_QUEUES_FILTER_ALL_QUEUES; |
| } |
| |
| /* Clear all user mode queues */ |
| list_for_each_entry(q, &qpd->queues_list, list) { |
| if (q->properties.type == KFD_QUEUE_TYPE_SDMA) { |
| dqm->sdma_queue_count--; |
| deallocate_sdma_queue(dqm, q->sdma_id); |
| } |
| |
| if (q->properties.is_active) |
| dqm->queue_count--; |
| |
| dqm->total_queue_count--; |
| } |
| |
| /* Unregister process */ |
| list_for_each_entry_safe(cur, next_dpn, &dqm->queues, list) { |
| if (qpd == cur->qpd) { |
| list_del(&cur->list); |
| kfree(cur); |
| dqm->processes_count--; |
| break; |
| } |
| } |
| |
| retval = execute_queues_cpsch(dqm, filter, 0); |
| if ((!dqm->is_hws_hang) && (retval || qpd->reset_wavefronts)) { |
| pr_warn("Resetting wave fronts (cpsch) on dev %p\n", dqm->dev); |
| dbgdev_wave_reset_wavefronts(dqm->dev, qpd->pqm->process); |
| qpd->reset_wavefronts = false; |
| } |
| |
| /* lastly, free mqd resources */ |
| list_for_each_entry_safe(q, next, &qpd->queues_list, list) { |
| mqd_mgr = dqm->ops.get_mqd_manager(dqm, |
| get_mqd_type_from_queue_type(q->properties.type)); |
| if (!mqd_mgr) { |
| retval = -ENOMEM; |
| goto out; |
| } |
| list_del(&q->list); |
| qpd->queue_count--; |
| mqd_mgr->uninit_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj); |
| } |
| |
| out: |
| dqm_unlock(dqm); |
| return retval; |
| } |
| |
| struct device_queue_manager *device_queue_manager_init(struct kfd_dev *dev) |
| { |
| struct device_queue_manager *dqm; |
| |
| pr_debug("Loading device queue manager\n"); |
| |
| dqm = kzalloc(sizeof(*dqm), GFP_KERNEL); |
| if (!dqm) |
| return NULL; |
| |
| switch (dev->device_info->asic_family) { |
| /* HWS is not available on Hawaii. */ |
| case CHIP_HAWAII: |
| /* HWS depends on CWSR for timely dequeue. CWSR is not |
| * available on Tonga. |
| * |
| * FIXME: This argument also applies to Kaveri. |
| */ |
| case CHIP_TONGA: |
| dqm->sched_policy = KFD_SCHED_POLICY_NO_HWS; |
| break; |
| default: |
| dqm->sched_policy = sched_policy; |
| break; |
| } |
| |
| dqm->dev = dev; |
| switch (dqm->sched_policy) { |
| case KFD_SCHED_POLICY_HWS: |
| case KFD_SCHED_POLICY_HWS_NO_OVERSUBSCRIPTION: |
| /* initialize dqm for cp scheduling */ |
| dqm->ops.create_queue = create_queue_cpsch; |
| dqm->ops.initialize = initialize_cpsch; |
| dqm->ops.start = start_cpsch; |
| dqm->ops.stop = stop_cpsch; |
| dqm->ops.destroy_queue = destroy_queue_cpsch; |
| dqm->ops.update_queue = update_queue; |
| dqm->ops.get_mqd_manager = get_mqd_manager; |
| dqm->ops.register_process = register_process; |
| dqm->ops.unregister_process = unregister_process; |
| dqm->ops.uninitialize = uninitialize; |
| dqm->ops.create_kernel_queue = create_kernel_queue_cpsch; |
| dqm->ops.destroy_kernel_queue = destroy_kernel_queue_cpsch; |
| dqm->ops.set_cache_memory_policy = set_cache_memory_policy; |
| dqm->ops.set_trap_handler = set_trap_handler; |
| dqm->ops.process_termination = process_termination_cpsch; |
| dqm->ops.evict_process_queues = evict_process_queues_cpsch; |
| dqm->ops.restore_process_queues = restore_process_queues_cpsch; |
| dqm->ops.get_wave_state = get_wave_state; |
| break; |
| case KFD_SCHED_POLICY_NO_HWS: |
| /* initialize dqm for no cp scheduling */ |
| dqm->ops.start = start_nocpsch; |
| dqm->ops.stop = stop_nocpsch; |
| dqm->ops.create_queue = create_queue_nocpsch; |
| dqm->ops.destroy_queue = destroy_queue_nocpsch; |
| dqm->ops.update_queue = update_queue; |
| dqm->ops.get_mqd_manager = get_mqd_manager; |
| dqm->ops.register_process = register_process; |
| dqm->ops.unregister_process = unregister_process; |
| dqm->ops.initialize = initialize_nocpsch; |
| dqm->ops.uninitialize = uninitialize; |
| dqm->ops.set_cache_memory_policy = set_cache_memory_policy; |
| dqm->ops.set_trap_handler = set_trap_handler; |
| dqm->ops.process_termination = process_termination_nocpsch; |
| dqm->ops.evict_process_queues = evict_process_queues_nocpsch; |
| dqm->ops.restore_process_queues = |
| restore_process_queues_nocpsch; |
| dqm->ops.get_wave_state = get_wave_state; |
| break; |
| default: |
| pr_err("Invalid scheduling policy %d\n", dqm->sched_policy); |
| goto out_free; |
| } |
| |
| switch (dev->device_info->asic_family) { |
| case CHIP_CARRIZO: |
| device_queue_manager_init_vi(&dqm->asic_ops); |
| break; |
| |
| case CHIP_KAVERI: |
| device_queue_manager_init_cik(&dqm->asic_ops); |
| break; |
| |
| case CHIP_HAWAII: |
| device_queue_manager_init_cik_hawaii(&dqm->asic_ops); |
| break; |
| |
| case CHIP_TONGA: |
| case CHIP_FIJI: |
| case CHIP_POLARIS10: |
| case CHIP_POLARIS11: |
| case CHIP_POLARIS12: |
| device_queue_manager_init_vi_tonga(&dqm->asic_ops); |
| break; |
| |
| case CHIP_VEGA10: |
| case CHIP_VEGA12: |
| case CHIP_VEGA20: |
| case CHIP_RAVEN: |
| device_queue_manager_init_v9(&dqm->asic_ops); |
| break; |
| default: |
| WARN(1, "Unexpected ASIC family %u", |
| dev->device_info->asic_family); |
| goto out_free; |
| } |
| |
| if (!dqm->ops.initialize(dqm)) |
| return dqm; |
| |
| out_free: |
| kfree(dqm); |
| return NULL; |
| } |
| |
| void device_queue_manager_uninit(struct device_queue_manager *dqm) |
| { |
| dqm->ops.uninitialize(dqm); |
| kfree(dqm); |
| } |
| |
| int kfd_process_vm_fault(struct device_queue_manager *dqm, |
| unsigned int pasid) |
| { |
| struct kfd_process_device *pdd; |
| struct kfd_process *p = kfd_lookup_process_by_pasid(pasid); |
| int ret = 0; |
| |
| if (!p) |
| return -EINVAL; |
| pdd = kfd_get_process_device_data(dqm->dev, p); |
| if (pdd) |
| ret = dqm->ops.evict_process_queues(dqm, &pdd->qpd); |
| kfd_unref_process(p); |
| |
| return ret; |
| } |
| |
| static void kfd_process_hw_exception(struct work_struct *work) |
| { |
| struct device_queue_manager *dqm = container_of(work, |
| struct device_queue_manager, hw_exception_work); |
| amdgpu_amdkfd_gpu_reset(dqm->dev->kgd); |
| } |
| |
| #if defined(CONFIG_DEBUG_FS) |
| |
| static void seq_reg_dump(struct seq_file *m, |
| uint32_t (*dump)[2], uint32_t n_regs) |
| { |
| uint32_t i, count; |
| |
| for (i = 0, count = 0; i < n_regs; i++) { |
| if (count == 0 || |
| dump[i-1][0] + sizeof(uint32_t) != dump[i][0]) { |
| seq_printf(m, "%s %08x: %08x", |
| i ? "\n" : "", |
| dump[i][0], dump[i][1]); |
| count = 7; |
| } else { |
| seq_printf(m, " %08x", dump[i][1]); |
| count--; |
| } |
| } |
| |
| seq_puts(m, "\n"); |
| } |
| |
| int dqm_debugfs_hqds(struct seq_file *m, void *data) |
| { |
| struct device_queue_manager *dqm = data; |
| uint32_t (*dump)[2], n_regs; |
| int pipe, queue; |
| int r = 0; |
| |
| r = dqm->dev->kfd2kgd->hqd_dump(dqm->dev->kgd, |
| KFD_CIK_HIQ_PIPE, KFD_CIK_HIQ_QUEUE, &dump, &n_regs); |
| if (!r) { |
| seq_printf(m, " HIQ on MEC %d Pipe %d Queue %d\n", |
| KFD_CIK_HIQ_PIPE/get_pipes_per_mec(dqm)+1, |
| KFD_CIK_HIQ_PIPE%get_pipes_per_mec(dqm), |
| KFD_CIK_HIQ_QUEUE); |
| seq_reg_dump(m, dump, n_regs); |
| |
| kfree(dump); |
| } |
| |
| for (pipe = 0; pipe < get_pipes_per_mec(dqm); pipe++) { |
| int pipe_offset = pipe * get_queues_per_pipe(dqm); |
| |
| for (queue = 0; queue < get_queues_per_pipe(dqm); queue++) { |
| if (!test_bit(pipe_offset + queue, |
| dqm->dev->shared_resources.queue_bitmap)) |
| continue; |
| |
| r = dqm->dev->kfd2kgd->hqd_dump( |
| dqm->dev->kgd, pipe, queue, &dump, &n_regs); |
| if (r) |
| break; |
| |
| seq_printf(m, " CP Pipe %d, Queue %d\n", |
| pipe, queue); |
| seq_reg_dump(m, dump, n_regs); |
| |
| kfree(dump); |
| } |
| } |
| |
| for (pipe = 0; pipe < get_num_sdma_engines(dqm); pipe++) { |
| for (queue = 0; |
| queue < dqm->dev->device_info->num_sdma_queues_per_engine; |
| queue++) { |
| r = dqm->dev->kfd2kgd->hqd_sdma_dump( |
| dqm->dev->kgd, pipe, queue, &dump, &n_regs); |
| if (r) |
| break; |
| |
| seq_printf(m, " SDMA Engine %d, RLC %d\n", |
| pipe, queue); |
| seq_reg_dump(m, dump, n_regs); |
| |
| kfree(dump); |
| } |
| } |
| |
| return r; |
| } |
| |
| int dqm_debugfs_execute_queues(struct device_queue_manager *dqm) |
| { |
| int r = 0; |
| |
| dqm_lock(dqm); |
| dqm->active_runlist = true; |
| r = execute_queues_cpsch(dqm, KFD_UNMAP_QUEUES_FILTER_ALL_QUEUES, 0); |
| dqm_unlock(dqm); |
| |
| return r; |
| } |
| |
| #endif |