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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
commit | ace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch) | |
tree | b2d64bc10158fdd5497876388cd68142ca374ed3 /drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c | |
parent | Initial commit. (diff) | |
download | linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip |
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c')
-rw-r--r-- | drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c | 3253 |
1 files changed, 3253 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c new file mode 100644 index 0000000000..e07652e724 --- /dev/null +++ b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c @@ -0,0 +1,3253 @@ +// SPDX-License-Identifier: GPL-2.0 OR MIT +/* + * Copyright 2014-2022 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" +#include "mes_api_def.h" +#include "kfd_debug.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, + u32 pasid, unsigned int vmid); + +static int execute_queues_cpsch(struct device_queue_manager *dqm, + enum kfd_unmap_queues_filter filter, + 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, + uint32_t grace_period, + bool reset); + +static int map_queues_cpsch(struct device_queue_manager *dqm); + +static void deallocate_sdma_queue(struct device_queue_manager *dqm, + struct queue *q); + +static inline void deallocate_hqd(struct device_queue_manager *dqm, + struct queue *q); +static int allocate_hqd(struct device_queue_manager *dqm, struct queue *q); +static int allocate_sdma_queue(struct device_queue_manager *dqm, + struct queue *q, const uint32_t *restore_sdma_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 || type == KFD_QUEUE_TYPE_SDMA_XGMI) + 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->kfd->shared_resources.num_pipe_per_mec + + pipe) * dqm->dev->kfd->shared_resources.num_queue_per_pipe; + + /* queue is available for KFD usage if bit is 1 */ + for (i = 0; i < dqm->dev->kfd->shared_resources.num_queue_per_pipe; ++i) + if (test_bit(pipe_offset + i, + dqm->dev->kfd->shared_resources.cp_queue_bitmap)) + return true; + return false; +} + +unsigned int get_cp_queues_num(struct device_queue_manager *dqm) +{ + return bitmap_weight(dqm->dev->kfd->shared_resources.cp_queue_bitmap, + KGD_MAX_QUEUES); +} + +unsigned int get_queues_per_pipe(struct device_queue_manager *dqm) +{ + return dqm->dev->kfd->shared_resources.num_queue_per_pipe; +} + +unsigned int get_pipes_per_mec(struct device_queue_manager *dqm) +{ + return dqm->dev->kfd->shared_resources.num_pipe_per_mec; +} + +static unsigned int get_num_all_sdma_engines(struct device_queue_manager *dqm) +{ + return kfd_get_num_sdma_engines(dqm->dev) + + kfd_get_num_xgmi_sdma_engines(dqm->dev); +} + +unsigned int get_num_sdma_queues(struct device_queue_manager *dqm) +{ + return kfd_get_num_sdma_engines(dqm->dev) * + dqm->dev->kfd->device_info.num_sdma_queues_per_engine; +} + +unsigned int get_num_xgmi_sdma_queues(struct device_queue_manager *dqm) +{ + return kfd_get_num_xgmi_sdma_engines(dqm->dev) * + dqm->dev->kfd->device_info.num_sdma_queues_per_engine; +} + +static void init_sdma_bitmaps(struct device_queue_manager *dqm) +{ + bitmap_zero(dqm->sdma_bitmap, KFD_MAX_SDMA_QUEUES); + bitmap_set(dqm->sdma_bitmap, 0, get_num_sdma_queues(dqm)); + + bitmap_zero(dqm->xgmi_sdma_bitmap, KFD_MAX_SDMA_QUEUES); + bitmap_set(dqm->xgmi_sdma_bitmap, 0, get_num_xgmi_sdma_queues(dqm)); + + /* Mask out the reserved queues */ + bitmap_andnot(dqm->sdma_bitmap, dqm->sdma_bitmap, + dqm->dev->kfd->device_info.reserved_sdma_queues_bitmap, + KFD_MAX_SDMA_QUEUES); +} + +void program_sh_mem_settings(struct device_queue_manager *dqm, + struct qcm_process_device *qpd) +{ + uint32_t xcc_mask = dqm->dev->xcc_mask; + int xcc_id; + + for_each_inst(xcc_id, xcc_mask) + dqm->dev->kfd2kgd->program_sh_mem_settings( + dqm->dev->adev, qpd->vmid, qpd->sh_mem_config, + qpd->sh_mem_ape1_base, qpd->sh_mem_ape1_limit, + qpd->sh_mem_bases, xcc_id); +} + +static void kfd_hws_hang(struct device_queue_manager *dqm) +{ + /* + * Issue a GPU reset if HWS is unresponsive + */ + dqm->is_hws_hang = true; + + /* It's possible we're detecting a HWS hang in the + * middle of a GPU reset. No need to schedule another + * reset in this case. + */ + if (!dqm->is_resetting) + schedule_work(&dqm->hw_exception_work); +} + +static int convert_to_mes_queue_type(int queue_type) +{ + int mes_queue_type; + + switch (queue_type) { + case KFD_QUEUE_TYPE_COMPUTE: + mes_queue_type = MES_QUEUE_TYPE_COMPUTE; + break; + case KFD_QUEUE_TYPE_SDMA: + mes_queue_type = MES_QUEUE_TYPE_SDMA; + break; + default: + WARN(1, "Invalid queue type %d", queue_type); + mes_queue_type = -EINVAL; + break; + } + + return mes_queue_type; +} + +static int add_queue_mes(struct device_queue_manager *dqm, struct queue *q, + struct qcm_process_device *qpd) +{ + struct amdgpu_device *adev = (struct amdgpu_device *)dqm->dev->adev; + struct kfd_process_device *pdd = qpd_to_pdd(qpd); + struct mes_add_queue_input queue_input; + int r, queue_type; + uint64_t wptr_addr_off; + + if (dqm->is_hws_hang) + return -EIO; + + memset(&queue_input, 0x0, sizeof(struct mes_add_queue_input)); + queue_input.process_id = qpd->pqm->process->pasid; + queue_input.page_table_base_addr = qpd->page_table_base; + queue_input.process_va_start = 0; + queue_input.process_va_end = adev->vm_manager.max_pfn - 1; + /* MES unit for quantum is 100ns */ + queue_input.process_quantum = KFD_MES_PROCESS_QUANTUM; /* Equivalent to 10ms. */ + queue_input.process_context_addr = pdd->proc_ctx_gpu_addr; + queue_input.gang_quantum = KFD_MES_GANG_QUANTUM; /* Equivalent to 1ms */ + queue_input.gang_context_addr = q->gang_ctx_gpu_addr; + queue_input.inprocess_gang_priority = q->properties.priority; + queue_input.gang_global_priority_level = + AMDGPU_MES_PRIORITY_LEVEL_NORMAL; + queue_input.doorbell_offset = q->properties.doorbell_off; + queue_input.mqd_addr = q->gart_mqd_addr; + queue_input.wptr_addr = (uint64_t)q->properties.write_ptr; + + if (q->wptr_bo) { + wptr_addr_off = (uint64_t)q->properties.write_ptr & (PAGE_SIZE - 1); + queue_input.wptr_mc_addr = amdgpu_bo_gpu_offset(q->wptr_bo) + wptr_addr_off; + } + + queue_input.is_kfd_process = 1; + queue_input.is_aql_queue = (q->properties.format == KFD_QUEUE_FORMAT_AQL); + queue_input.queue_size = q->properties.queue_size >> 2; + + queue_input.paging = false; + queue_input.tba_addr = qpd->tba_addr; + queue_input.tma_addr = qpd->tma_addr; + queue_input.trap_en = !kfd_dbg_has_cwsr_workaround(q->device); + queue_input.skip_process_ctx_clear = qpd->pqm->process->debug_trap_enabled || + kfd_dbg_has_ttmps_always_setup(q->device); + + queue_type = convert_to_mes_queue_type(q->properties.type); + if (queue_type < 0) { + pr_err("Queue type not supported with MES, queue:%d\n", + q->properties.type); + return -EINVAL; + } + queue_input.queue_type = (uint32_t)queue_type; + + queue_input.exclusively_scheduled = q->properties.is_gws; + + amdgpu_mes_lock(&adev->mes); + r = adev->mes.funcs->add_hw_queue(&adev->mes, &queue_input); + amdgpu_mes_unlock(&adev->mes); + if (r) { + pr_err("failed to add hardware queue to MES, doorbell=0x%x\n", + q->properties.doorbell_off); + pr_err("MES might be in unrecoverable state, issue a GPU reset\n"); + kfd_hws_hang(dqm); + } + + return r; +} + +static int remove_queue_mes(struct device_queue_manager *dqm, struct queue *q, + struct qcm_process_device *qpd) +{ + struct amdgpu_device *adev = (struct amdgpu_device *)dqm->dev->adev; + int r; + struct mes_remove_queue_input queue_input; + + if (dqm->is_hws_hang) + return -EIO; + + memset(&queue_input, 0x0, sizeof(struct mes_remove_queue_input)); + queue_input.doorbell_offset = q->properties.doorbell_off; + queue_input.gang_context_addr = q->gang_ctx_gpu_addr; + + amdgpu_mes_lock(&adev->mes); + r = adev->mes.funcs->remove_hw_queue(&adev->mes, &queue_input); + amdgpu_mes_unlock(&adev->mes); + + if (r) { + pr_err("failed to remove hardware queue from MES, doorbell=0x%x\n", + q->properties.doorbell_off); + pr_err("MES might be in unrecoverable state, issue a GPU reset\n"); + kfd_hws_hang(dqm); + } + + return r; +} + +static int remove_all_queues_mes(struct device_queue_manager *dqm) +{ + struct device_process_node *cur; + struct qcm_process_device *qpd; + struct queue *q; + int retval = 0; + + list_for_each_entry(cur, &dqm->queues, list) { + qpd = cur->qpd; + list_for_each_entry(q, &qpd->queues_list, list) { + if (q->properties.is_active) { + retval = remove_queue_mes(dqm, q, qpd); + if (retval) { + pr_err("%s: Failed to remove queue %d for dev %d", + __func__, + q->properties.queue_id, + dqm->dev->id); + return retval; + } + } + } + } + + return retval; +} + +static void increment_queue_count(struct device_queue_manager *dqm, + struct qcm_process_device *qpd, + struct queue *q) +{ + dqm->active_queue_count++; + if (q->properties.type == KFD_QUEUE_TYPE_COMPUTE || + q->properties.type == KFD_QUEUE_TYPE_DIQ) + dqm->active_cp_queue_count++; + + if (q->properties.is_gws) { + dqm->gws_queue_count++; + qpd->mapped_gws_queue = true; + } +} + +static void decrement_queue_count(struct device_queue_manager *dqm, + struct qcm_process_device *qpd, + struct queue *q) +{ + dqm->active_queue_count--; + if (q->properties.type == KFD_QUEUE_TYPE_COMPUTE || + q->properties.type == KFD_QUEUE_TYPE_DIQ) + dqm->active_cp_queue_count--; + + if (q->properties.is_gws) { + dqm->gws_queue_count--; + qpd->mapped_gws_queue = false; + } +} + +/* + * Allocate a doorbell ID to this queue. + * If doorbell_id is passed in, make sure requested ID is valid then allocate it. + */ +static int allocate_doorbell(struct qcm_process_device *qpd, + struct queue *q, + uint32_t const *restore_id) +{ + struct kfd_node *dev = qpd->dqm->dev; + + if (!KFD_IS_SOC15(dev)) { + /* On pre-SOC15 chips we need to use the queue ID to + * preserve the user mode ABI. + */ + + if (restore_id && *restore_id != q->properties.queue_id) + return -EINVAL; + + q->doorbell_id = q->properties.queue_id; + } else if (q->properties.type == KFD_QUEUE_TYPE_SDMA || + q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI) { + /* For SDMA queues on SOC15 with 8-byte doorbell, use static + * doorbell assignments based on the engine and queue id. + * The doobell index distance between RLC (2*i) and (2*i+1) + * for a SDMA engine is 512. + */ + + uint32_t *idx_offset = dev->kfd->shared_resources.sdma_doorbell_idx; + + /* + * q->properties.sdma_engine_id corresponds to the virtual + * sdma engine number. However, for doorbell allocation, + * we need the physical sdma engine id in order to get the + * correct doorbell offset. + */ + uint32_t valid_id = idx_offset[qpd->dqm->dev->node_id * + get_num_all_sdma_engines(qpd->dqm) + + q->properties.sdma_engine_id] + + (q->properties.sdma_queue_id & 1) + * KFD_QUEUE_DOORBELL_MIRROR_OFFSET + + (q->properties.sdma_queue_id >> 1); + + if (restore_id && *restore_id != valid_id) + return -EINVAL; + q->doorbell_id = valid_id; + } else { + /* For CP queues on SOC15 */ + if (restore_id) { + /* make sure that ID is free */ + if (__test_and_set_bit(*restore_id, qpd->doorbell_bitmap)) + return -EINVAL; + + q->doorbell_id = *restore_id; + } else { + /* or 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 = amdgpu_doorbell_index_on_bar(dev->adev, + qpd->proc_doorbells, + q->doorbell_id, + dev->kfd->device_info.doorbell_size); + return 0; +} + +static void deallocate_doorbell(struct qcm_process_device *qpd, + struct queue *q) +{ + unsigned int old; + struct kfd_node *dev = qpd->dqm->dev; + + if (!KFD_IS_SOC15(dev) || + q->properties.type == KFD_QUEUE_TYPE_SDMA || + q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI) + return; + + old = test_and_clear_bit(q->doorbell_id, qpd->doorbell_bitmap); + WARN_ON(!old); +} + +static void program_trap_handler_settings(struct device_queue_manager *dqm, + struct qcm_process_device *qpd) +{ + uint32_t xcc_mask = dqm->dev->xcc_mask; + int xcc_id; + + if (dqm->dev->kfd2kgd->program_trap_handler_settings) + for_each_inst(xcc_id, xcc_mask) + dqm->dev->kfd2kgd->program_trap_handler_settings( + dqm->dev->adev, qpd->vmid, qpd->tba_addr, + qpd->tma_addr, xcc_id); +} + +static int allocate_vmid(struct device_queue_manager *dqm, + struct qcm_process_device *qpd, + struct queue *q) +{ + int allocated_vmid = -1, i; + + for (i = dqm->dev->vm_info.first_vmid_kfd; + i <= dqm->dev->vm_info.last_vmid_kfd; i++) { + if (!dqm->vmid_pasid[i]) { + allocated_vmid = i; + break; + } + } + + if (allocated_vmid < 0) { + pr_err("no more vmid to allocate\n"); + return -ENOSPC; + } + + pr_debug("vmid allocated: %d\n", allocated_vmid); + + dqm->vmid_pasid[allocated_vmid] = q->process->pasid; + + set_pasid_vmid_mapping(dqm, q->process->pasid, allocated_vmid); + + qpd->vmid = allocated_vmid; + q->properties.vmid = allocated_vmid; + + program_sh_mem_settings(dqm, qpd); + + if (KFD_IS_SOC15(dqm->dev) && dqm->dev->kfd->cwsr_enabled) + program_trap_handler_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->adev, + 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), TLB_FLUSH_LEGACY); + + if (dqm->dev->kfd2kgd->set_scratch_backing_va) + dqm->dev->kfd2kgd->set_scratch_backing_va(dqm->dev->adev, + qpd->sh_hidden_private_base, qpd->vmid); + + return 0; +} + +static int flush_texture_cache_nocpsch(struct kfd_node *kdev, + struct qcm_process_device *qpd) +{ + const struct packet_manager_funcs *pmf = qpd->dqm->packet_mgr.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->adev, 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) +{ + /* On GFX v7, CP doesn't flush TC at dequeue */ + if (q->device->adev->asic_type == CHIP_HAWAII) + if (flush_texture_cache_nocpsch(q->device, qpd)) + pr_err("Failed to flush TC\n"); + + kfd_flush_tlb(qpd_to_pdd(qpd), TLB_FLUSH_LEGACY); + + /* Release the vmid mapping */ + set_pasid_vmid_mapping(dqm, 0, qpd->vmid); + dqm->vmid_pasid[qpd->vmid] = 0; + + 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, + const struct kfd_criu_queue_priv_data *qd, + const void *restore_mqd, const void *restore_ctl_stack) +{ + struct mqd_manager *mqd_mgr; + int retval; + + 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: mark all queues as evicted, even ones + * not currently active. Restoring inactive queues later only + * updates the is_evicted flag but is a no-op otherwise. + */ + q->properties.is_evicted = !!qpd->evicted; + + q->properties.tba_addr = qpd->tba_addr; + q->properties.tma_addr = qpd->tma_addr; + + mqd_mgr = dqm->mqd_mgrs[get_mqd_type_from_queue_type( + q->properties.type)]; + if (q->properties.type == KFD_QUEUE_TYPE_COMPUTE) { + retval = allocate_hqd(dqm, q); + if (retval) + goto deallocate_vmid; + pr_debug("Loading mqd to hqd on pipe %d, queue %d\n", + q->pipe, q->queue); + } else if (q->properties.type == KFD_QUEUE_TYPE_SDMA || + q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI) { + retval = allocate_sdma_queue(dqm, q, qd ? &qd->sdma_id : NULL); + if (retval) + goto deallocate_vmid; + dqm->asic_ops.init_sdma_vm(dqm, q, qpd); + } + + retval = allocate_doorbell(qpd, q, qd ? &qd->doorbell_id : NULL); + if (retval) + goto out_deallocate_hqd; + + /* Temporarily release dqm lock to avoid a circular lock dependency */ + dqm_unlock(dqm); + q->mqd_mem_obj = mqd_mgr->allocate_mqd(mqd_mgr->dev, &q->properties); + dqm_lock(dqm); + + if (!q->mqd_mem_obj) { + retval = -ENOMEM; + goto out_deallocate_doorbell; + } + + if (qd) + mqd_mgr->restore_mqd(mqd_mgr, &q->mqd, q->mqd_mem_obj, &q->gart_mqd_addr, + &q->properties, restore_mqd, restore_ctl_stack, + qd->ctl_stack_size); + else + mqd_mgr->init_mqd(mqd_mgr, &q->mqd, q->mqd_mem_obj, + &q->gart_mqd_addr, &q->properties); + + if (q->properties.is_active) { + if (!dqm->sched_running) { + WARN_ONCE(1, "Load non-HWS mqd while stopped\n"); + goto add_queue_to_list; + } + + 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_free_mqd; + } + +add_queue_to_list: + list_add(&q->list, &qpd->queues_list); + qpd->queue_count++; + if (q->properties.is_active) + increment_queue_count(dqm, qpd, q); + + /* + * 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); + goto out_unlock; + +out_free_mqd: + mqd_mgr->free_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj); +out_deallocate_doorbell: + deallocate_doorbell(qpd, q); +out_deallocate_hqd: + if (q->properties.type == KFD_QUEUE_TYPE_COMPUTE) + deallocate_hqd(dqm, q); + else if (q->properties.type == KFD_QUEUE_TYPE_SDMA || + q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI) + deallocate_sdma_queue(dqm, q); +deallocate_vmid: + if (list_empty(&qpd->queues_list)) + deallocate_vmid(dqm, qpd, q); +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); +} + +#define SQ_IND_CMD_CMD_KILL 0x00000003 +#define SQ_IND_CMD_MODE_BROADCAST 0x00000001 + +static int dbgdev_wave_reset_wavefronts(struct kfd_node *dev, struct kfd_process *p) +{ + int status = 0; + unsigned int vmid; + uint16_t queried_pasid; + union SQ_CMD_BITS reg_sq_cmd; + union GRBM_GFX_INDEX_BITS reg_gfx_index; + struct kfd_process_device *pdd; + int first_vmid_to_scan = dev->vm_info.first_vmid_kfd; + int last_vmid_to_scan = dev->vm_info.last_vmid_kfd; + uint32_t xcc_mask = dev->xcc_mask; + int xcc_id; + + reg_sq_cmd.u32All = 0; + reg_gfx_index.u32All = 0; + + pr_debug("Killing all process wavefronts\n"); + + if (!dev->kfd2kgd->get_atc_vmid_pasid_mapping_info) { + pr_err("no vmid pasid mapping supported \n"); + return -EOPNOTSUPP; + } + + /* Scan all registers in the range ATC_VMID8_PASID_MAPPING .. + * ATC_VMID15_PASID_MAPPING + * to check which VMID the current process is mapped to. + */ + + for (vmid = first_vmid_to_scan; vmid <= last_vmid_to_scan; vmid++) { + status = dev->kfd2kgd->get_atc_vmid_pasid_mapping_info + (dev->adev, vmid, &queried_pasid); + + if (status && queried_pasid == p->pasid) { + pr_debug("Killing wave fronts of vmid %d and pasid 0x%x\n", + vmid, p->pasid); + break; + } + } + + if (vmid > last_vmid_to_scan) { + pr_err("Didn't find vmid for pasid 0x%x\n", p->pasid); + return -EFAULT; + } + + /* taking the VMID for that process on the safe way using PDD */ + pdd = kfd_get_process_device_data(dev, p); + if (!pdd) + return -EFAULT; + + reg_gfx_index.bits.sh_broadcast_writes = 1; + reg_gfx_index.bits.se_broadcast_writes = 1; + reg_gfx_index.bits.instance_broadcast_writes = 1; + reg_sq_cmd.bits.mode = SQ_IND_CMD_MODE_BROADCAST; + reg_sq_cmd.bits.cmd = SQ_IND_CMD_CMD_KILL; + reg_sq_cmd.bits.vm_id = vmid; + + for_each_inst(xcc_id, xcc_mask) + dev->kfd2kgd->wave_control_execute( + dev->adev, reg_gfx_index.u32All, + reg_sq_cmd.u32All, xcc_id); + + return 0; +} + +/* 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->mqd_mgrs[get_mqd_type_from_queue_type( + q->properties.type)]; + + if (q->properties.type == KFD_QUEUE_TYPE_COMPUTE) + deallocate_hqd(dqm, q); + else if (q->properties.type == KFD_QUEUE_TYPE_SDMA) + deallocate_sdma_queue(dqm, q); + else if (q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI) + deallocate_sdma_queue(dqm, q); + else { + pr_debug("q->properties.type %d is invalid\n", + q->properties.type); + return -EINVAL; + } + dqm->total_queue_count--; + + deallocate_doorbell(qpd, q); + + if (!dqm->sched_running) { + WARN_ONCE(1, "Destroy non-HWS queue while stopped\n"); + return 0; + } + + 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; + + 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) + decrement_queue_count(dqm, qpd, q); + + return retval; +} + +static int destroy_queue_nocpsch(struct device_queue_manager *dqm, + struct qcm_process_device *qpd, + struct queue *q) +{ + int retval; + uint64_t sdma_val = 0; + struct kfd_process_device *pdd = qpd_to_pdd(qpd); + struct mqd_manager *mqd_mgr = + dqm->mqd_mgrs[get_mqd_type_from_queue_type(q->properties.type)]; + + /* Get the SDMA queue stats */ + if ((q->properties.type == KFD_QUEUE_TYPE_SDMA) || + (q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI)) { + retval = read_sdma_queue_counter((uint64_t __user *)q->properties.read_ptr, + &sdma_val); + if (retval) + pr_err("Failed to read SDMA queue counter for queue: %d\n", + q->properties.queue_id); + } + + dqm_lock(dqm); + retval = destroy_queue_nocpsch_locked(dqm, qpd, q); + if (!retval) + pdd->sdma_past_activity_counter += sdma_val; + dqm_unlock(dqm); + + mqd_mgr->free_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj); + + return retval; +} + +static int update_queue(struct device_queue_manager *dqm, struct queue *q, + struct mqd_update_info *minfo) +{ + int retval = 0; + 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->mqd_mgrs[get_mqd_type_from_queue_type( + q->properties.type)]; + + /* 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) { + if (!dqm->dev->kfd->shared_resources.enable_mes) + retval = unmap_queues_cpsch(dqm, + KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES, 0, USE_DEFAULT_GRACE_PERIOD, false); + else if (prev_active) + retval = remove_queue_mes(dqm, q, &pdd->qpd); + + 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 || + q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI)) { + + if (!dqm->sched_running) { + WARN_ONCE(1, "Update non-HWS queue while stopped\n"); + goto out_unlock; + } + + retval = mqd_mgr->destroy_mqd(mqd_mgr, q->mqd, + (dqm->dev->kfd->cwsr_enabled ? + KFD_PREEMPT_TYPE_WAVEFRONT_SAVE : + KFD_PREEMPT_TYPE_WAVEFRONT_DRAIN), + KFD_UNMAP_LATENCY_MS, q->pipe, q->queue); + if (retval) { + pr_err("destroy mqd failed\n"); + goto out_unlock; + } + } + + mqd_mgr->update_mqd(mqd_mgr, q->mqd, &q->properties, minfo); + + /* + * check active state vs. the previous state and modify + * counter accordingly. map_queues_cpsch uses the + * dqm->active_queue_count to determine whether a new runlist must be + * uploaded. + */ + if (q->properties.is_active && !prev_active) { + increment_queue_count(dqm, &pdd->qpd, q); + } else if (!q->properties.is_active && prev_active) { + decrement_queue_count(dqm, &pdd->qpd, q); + } else if (q->gws && !q->properties.is_gws) { + if (q->properties.is_active) { + dqm->gws_queue_count++; + pdd->qpd.mapped_gws_queue = true; + } + q->properties.is_gws = true; + } else if (!q->gws && q->properties.is_gws) { + if (q->properties.is_active) { + dqm->gws_queue_count--; + pdd->qpd.mapped_gws_queue = false; + } + q->properties.is_gws = false; + } + + if (dqm->sched_policy != KFD_SCHED_POLICY_NO_HWS) { + if (!dqm->dev->kfd->shared_resources.enable_mes) + retval = map_queues_cpsch(dqm); + else if (q->properties.is_active) + retval = add_queue_mes(dqm, q, &pdd->qpd); + } else if (q->properties.is_active && + (q->properties.type == KFD_QUEUE_TYPE_COMPUTE || + q->properties.type == KFD_QUEUE_TYPE_SDMA || + q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI)) { + 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; +} + +/* suspend_single_queue does not lock the dqm like the + * evict_process_queues_cpsch or evict_process_queues_nocpsch. You should + * lock the dqm before calling, and unlock after calling. + * + * The reason we don't lock the dqm is because this function may be + * called on multiple queues in a loop, so rather than locking/unlocking + * multiple times, we will just keep the dqm locked for all of the calls. + */ +static int suspend_single_queue(struct device_queue_manager *dqm, + struct kfd_process_device *pdd, + struct queue *q) +{ + bool is_new; + + if (q->properties.is_suspended) + return 0; + + pr_debug("Suspending PASID %u queue [%i]\n", + pdd->process->pasid, + q->properties.queue_id); + + is_new = q->properties.exception_status & KFD_EC_MASK(EC_QUEUE_NEW); + + if (is_new || q->properties.is_being_destroyed) { + pr_debug("Suspend: skip %s queue id %i\n", + is_new ? "new" : "destroyed", + q->properties.queue_id); + return -EBUSY; + } + + q->properties.is_suspended = true; + if (q->properties.is_active) { + if (dqm->dev->kfd->shared_resources.enable_mes) { + int r = remove_queue_mes(dqm, q, &pdd->qpd); + + if (r) + return r; + } + + decrement_queue_count(dqm, &pdd->qpd, q); + q->properties.is_active = false; + } + + return 0; +} + +/* resume_single_queue does not lock the dqm like the functions + * restore_process_queues_cpsch or restore_process_queues_nocpsch. You should + * lock the dqm before calling, and unlock after calling. + * + * The reason we don't lock the dqm is because this function may be + * called on multiple queues in a loop, so rather than locking/unlocking + * multiple times, we will just keep the dqm locked for all of the calls. + */ +static int resume_single_queue(struct device_queue_manager *dqm, + struct qcm_process_device *qpd, + struct queue *q) +{ + struct kfd_process_device *pdd; + + if (!q->properties.is_suspended) + return 0; + + pdd = qpd_to_pdd(qpd); + + pr_debug("Restoring from suspend PASID %u queue [%i]\n", + pdd->process->pasid, + q->properties.queue_id); + + q->properties.is_suspended = false; + + if (QUEUE_IS_ACTIVE(q->properties)) { + if (dqm->dev->kfd->shared_resources.enable_mes) { + int r = add_queue_mes(dqm, q, &pdd->qpd); + + if (r) + return r; + } + + q->properties.is_active = true; + increment_queue_count(dqm, qpd, q); + } + + return 0; +} + +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, ret = 0; + + dqm_lock(dqm); + if (qpd->evicted++ > 0) /* already evicted, do nothing */ + goto out; + + pdd = qpd_to_pdd(qpd); + pr_debug_ratelimited("Evicting PASID 0x%x queues\n", + pdd->process->pasid); + + pdd->last_evict_timestamp = get_jiffies_64(); + /* Mark all queues as evicted. Deactivate all active queues on + * the qpd. + */ + list_for_each_entry(q, &qpd->queues_list, list) { + q->properties.is_evicted = true; + if (!q->properties.is_active) + continue; + + mqd_mgr = dqm->mqd_mgrs[get_mqd_type_from_queue_type( + q->properties.type)]; + q->properties.is_active = false; + decrement_queue_count(dqm, qpd, q); + + if (WARN_ONCE(!dqm->sched_running, "Evict when stopped\n")) + continue; + + retval = mqd_mgr->destroy_mqd(mqd_mgr, q->mqd, + (dqm->dev->kfd->cwsr_enabled ? + KFD_PREEMPT_TYPE_WAVEFRONT_SAVE : + KFD_PREEMPT_TYPE_WAVEFRONT_DRAIN), + KFD_UNMAP_LATENCY_MS, q->pipe, q->queue); + if (retval && !ret) + /* Return the first error, but keep going to + * maintain a consistent eviction state + */ + ret = retval; + } + +out: + dqm_unlock(dqm); + return ret; +} + +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); + + /* The debugger creates processes that temporarily have not acquired + * all VMs for all devices and has no VMs itself. + * Skip queue eviction on process eviction. + */ + if (!pdd->drm_priv) + goto out; + + pr_debug_ratelimited("Evicting PASID 0x%x queues\n", + pdd->process->pasid); + + /* Mark all queues as evicted. Deactivate all active queues on + * the qpd. + */ + list_for_each_entry(q, &qpd->queues_list, list) { + q->properties.is_evicted = true; + if (!q->properties.is_active) + continue; + + q->properties.is_active = false; + decrement_queue_count(dqm, qpd, q); + + if (dqm->dev->kfd->shared_resources.enable_mes) { + retval = remove_queue_mes(dqm, q, qpd); + if (retval) { + pr_err("Failed to evict queue %d\n", + q->properties.queue_id); + goto out; + } + } + } + pdd->last_evict_timestamp = get_jiffies_64(); + if (!dqm->dev->kfd->shared_resources.enable_mes) + retval = execute_queues_cpsch(dqm, + qpd->is_debug ? + KFD_UNMAP_QUEUES_FILTER_ALL_QUEUES : + KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES, 0, + USE_DEFAULT_GRACE_PERIOD); + +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; + uint64_t eviction_duration; + int retval, ret = 0; + + pdd = qpd_to_pdd(qpd); + /* Retrieve PD base */ + pd_base = amdgpu_amdkfd_gpuvm_get_process_page_dir(pdd->drm_priv); + + 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_debug_ratelimited("Restoring PASID 0x%x 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->adev, + qpd->vmid, + qpd->page_table_base); + kfd_flush_tlb(pdd, TLB_FLUSH_LEGACY); + } + + /* 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) { + ret = -EFAULT; + goto out; + } + + /* Remove the eviction flags. Activate queues that are not + * inactive for other reasons. + */ + list_for_each_entry(q, &qpd->queues_list, list) { + q->properties.is_evicted = false; + if (!QUEUE_IS_ACTIVE(q->properties)) + continue; + + mqd_mgr = dqm->mqd_mgrs[get_mqd_type_from_queue_type( + q->properties.type)]; + q->properties.is_active = true; + increment_queue_count(dqm, qpd, q); + + if (WARN_ONCE(!dqm->sched_running, "Restore when stopped\n")) + continue; + + retval = mqd_mgr->load_mqd(mqd_mgr, q->mqd, q->pipe, + q->queue, &q->properties, mm); + if (retval && !ret) + /* Return the first error, but keep going to + * maintain a consistent eviction state + */ + ret = retval; + } + qpd->evicted = 0; + eviction_duration = get_jiffies_64() - pdd->last_evict_timestamp; + atomic64_add(eviction_duration, &pdd->evict_duration_counter); +out: + if (mm) + mmput(mm); + dqm_unlock(dqm); + return ret; +} + +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 eviction_duration; + int retval = 0; + + pdd = qpd_to_pdd(qpd); + + 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; + } + + /* The debugger creates processes that temporarily have not acquired + * all VMs for all devices and has no VMs itself. + * Skip queue restore on process restore. + */ + if (!pdd->drm_priv) + goto vm_not_acquired; + + pr_debug_ratelimited("Restoring PASID 0x%x queues\n", + pdd->process->pasid); + + /* Update PD Base in QPD */ + qpd->page_table_base = amdgpu_amdkfd_gpuvm_get_process_page_dir(pdd->drm_priv); + pr_debug("Updated PD address to 0x%llx\n", qpd->page_table_base); + + /* activate all active queues on the qpd */ + list_for_each_entry(q, &qpd->queues_list, list) { + q->properties.is_evicted = false; + if (!QUEUE_IS_ACTIVE(q->properties)) + continue; + + q->properties.is_active = true; + increment_queue_count(dqm, &pdd->qpd, q); + + if (dqm->dev->kfd->shared_resources.enable_mes) { + retval = add_queue_mes(dqm, q, qpd); + if (retval) { + pr_err("Failed to restore queue %d\n", + q->properties.queue_id); + goto out; + } + } + } + if (!dqm->dev->kfd->shared_resources.enable_mes) + retval = execute_queues_cpsch(dqm, + KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES, 0, USE_DEFAULT_GRACE_PERIOD); + eviction_duration = get_jiffies_64() - pdd->last_evict_timestamp; + atomic64_add(eviction_duration, &pdd->evict_duration_counter); +vm_not_acquired: + 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->drm_priv); + + 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); + + dqm->processes_count++; + + dqm_unlock(dqm); + + /* Outside the DQM lock because under the DQM lock we can't do + * reclaim or take other locks that others hold while reclaiming. + */ + kfd_inc_compute_active(dqm->dev); + + 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); + dqm->processes_count--; + goto out; + } + } + /* qpd not found in dqm list */ + retval = 1; +out: + dqm_unlock(dqm); + + /* Outside the DQM lock because under the DQM lock we can't do + * reclaim or take other locks that others hold while reclaiming. + */ + if (!retval) + kfd_dec_compute_active(dqm->dev); + + return retval; +} + +static int +set_pasid_vmid_mapping(struct device_queue_manager *dqm, u32 pasid, + unsigned int vmid) +{ + uint32_t xcc_mask = dqm->dev->xcc_mask; + int xcc_id, ret; + + for_each_inst(xcc_id, xcc_mask) { + ret = dqm->dev->kfd2kgd->set_pasid_vmid_mapping( + dqm->dev->adev, pasid, vmid, xcc_id); + if (ret) + break; + } + + return ret; +} + +static void init_interrupts(struct device_queue_manager *dqm) +{ + uint32_t xcc_mask = dqm->dev->xcc_mask; + unsigned int i, xcc_id; + + for_each_inst(xcc_id, xcc_mask) { + for (i = 0 ; i < get_pipes_per_mec(dqm) ; i++) { + if (is_pipe_enabled(dqm, 0, i)) { + dqm->dev->kfd2kgd->init_interrupts( + dqm->dev->adev, i, xcc_id); + } + } + } +} + +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->active_queue_count = dqm->next_pipe_to_allocate = 0; + dqm->active_cp_queue_count = 0; + dqm->gws_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->kfd->shared_resources.cp_queue_bitmap)) + dqm->allocated_queues[pipe] |= 1 << queue; + } + + memset(dqm->vmid_pasid, 0, sizeof(dqm->vmid_pasid)); + + init_sdma_bitmaps(dqm); + + return 0; +} + +static void uninitialize(struct device_queue_manager *dqm) +{ + int i; + + WARN_ON(dqm->active_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); +} + +static int start_nocpsch(struct device_queue_manager *dqm) +{ + int r = 0; + + pr_info("SW scheduler is used"); + init_interrupts(dqm); + + if (dqm->dev->adev->asic_type == CHIP_HAWAII) + r = pm_init(&dqm->packet_mgr, dqm); + if (!r) + dqm->sched_running = true; + + return r; +} + +static int stop_nocpsch(struct device_queue_manager *dqm) +{ + dqm_lock(dqm); + if (!dqm->sched_running) { + dqm_unlock(dqm); + return 0; + } + + if (dqm->dev->adev->asic_type == CHIP_HAWAII) + pm_uninit(&dqm->packet_mgr, false); + dqm->sched_running = false; + dqm_unlock(dqm); + + return 0; +} + +static void pre_reset(struct device_queue_manager *dqm) +{ + dqm_lock(dqm); + dqm->is_resetting = true; + dqm_unlock(dqm); +} + +static int allocate_sdma_queue(struct device_queue_manager *dqm, + struct queue *q, const uint32_t *restore_sdma_id) +{ + int bit; + + if (q->properties.type == KFD_QUEUE_TYPE_SDMA) { + if (bitmap_empty(dqm->sdma_bitmap, KFD_MAX_SDMA_QUEUES)) { + pr_err("No more SDMA queue to allocate\n"); + return -ENOMEM; + } + + if (restore_sdma_id) { + /* Re-use existing sdma_id */ + if (!test_bit(*restore_sdma_id, dqm->sdma_bitmap)) { + pr_err("SDMA queue already in use\n"); + return -EBUSY; + } + clear_bit(*restore_sdma_id, dqm->sdma_bitmap); + q->sdma_id = *restore_sdma_id; + } else { + /* Find first available sdma_id */ + bit = find_first_bit(dqm->sdma_bitmap, + get_num_sdma_queues(dqm)); + clear_bit(bit, dqm->sdma_bitmap); + q->sdma_id = bit; + } + + q->properties.sdma_engine_id = + q->sdma_id % kfd_get_num_sdma_engines(dqm->dev); + q->properties.sdma_queue_id = q->sdma_id / + kfd_get_num_sdma_engines(dqm->dev); + } else if (q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI) { + if (bitmap_empty(dqm->xgmi_sdma_bitmap, KFD_MAX_SDMA_QUEUES)) { + pr_err("No more XGMI SDMA queue to allocate\n"); + return -ENOMEM; + } + if (restore_sdma_id) { + /* Re-use existing sdma_id */ + if (!test_bit(*restore_sdma_id, dqm->xgmi_sdma_bitmap)) { + pr_err("SDMA queue already in use\n"); + return -EBUSY; + } + clear_bit(*restore_sdma_id, dqm->xgmi_sdma_bitmap); + q->sdma_id = *restore_sdma_id; + } else { + bit = find_first_bit(dqm->xgmi_sdma_bitmap, + get_num_xgmi_sdma_queues(dqm)); + clear_bit(bit, dqm->xgmi_sdma_bitmap); + q->sdma_id = bit; + } + /* sdma_engine_id is sdma id including + * both PCIe-optimized SDMAs and XGMI- + * optimized SDMAs. The calculation below + * assumes the first N engines are always + * PCIe-optimized ones + */ + q->properties.sdma_engine_id = + kfd_get_num_sdma_engines(dqm->dev) + + q->sdma_id % kfd_get_num_xgmi_sdma_engines(dqm->dev); + q->properties.sdma_queue_id = q->sdma_id / + kfd_get_num_xgmi_sdma_engines(dqm->dev); + } + + pr_debug("SDMA engine id: %d\n", q->properties.sdma_engine_id); + pr_debug("SDMA queue id: %d\n", q->properties.sdma_queue_id); + + return 0; +} + +static void deallocate_sdma_queue(struct device_queue_manager *dqm, + struct queue *q) +{ + if (q->properties.type == KFD_QUEUE_TYPE_SDMA) { + if (q->sdma_id >= get_num_sdma_queues(dqm)) + return; + set_bit(q->sdma_id, dqm->sdma_bitmap); + } else if (q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI) { + if (q->sdma_id >= get_num_xgmi_sdma_queues(dqm)) + return; + set_bit(q->sdma_id, dqm->xgmi_sdma_bitmap); + } +} + +/* + * 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->compute_vmid_bitmap; + + res.queue_mask = 0; + for (i = 0; i < KGD_MAX_QUEUES; ++i) { + mec = (i / dqm->dev->kfd->shared_resources.num_queue_per_pipe) + / dqm->dev->kfd->shared_resources.num_pipe_per_mec; + + if (!test_bit(i, dqm->dev->kfd->shared_resources.cp_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 + << amdgpu_queue_mask_bit_to_set_resource_bit( + dqm->dev->adev, i); + } + res.gws_mask = ~0ull; + 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->packet_mgr, &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->active_queue_count = dqm->processes_count = 0; + dqm->active_cp_queue_count = 0; + dqm->gws_queue_count = 0; + dqm->active_runlist = false; + INIT_WORK(&dqm->hw_exception_work, kfd_process_hw_exception); + dqm->trap_debug_vmid = 0; + + 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, + ffs(dqm->dev->xcc_mask) - 1); + return 0; +} + +static int start_cpsch(struct device_queue_manager *dqm) +{ + int retval; + + retval = 0; + + dqm_lock(dqm); + + if (!dqm->dev->kfd->shared_resources.enable_mes) { + retval = pm_init(&dqm->packet_mgr, 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 = (uint64_t *)dqm->fence_mem->cpu_ptr; + dqm->fence_gpu_addr = dqm->fence_mem->gpu_addr; + + init_interrupts(dqm); + + /* clear hang status when driver try to start the hw scheduler */ + dqm->is_hws_hang = false; + dqm->is_resetting = false; + dqm->sched_running = true; + + if (!dqm->dev->kfd->shared_resources.enable_mes) + execute_queues_cpsch(dqm, KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES, 0, USE_DEFAULT_GRACE_PERIOD); + + /* Set CWSR grace period to 1x1000 cycle for GFX9.4.3 APU */ + if (amdgpu_emu_mode == 0 && dqm->dev->adev->gmc.is_app_apu && + (KFD_GC_VERSION(dqm->dev) == IP_VERSION(9, 4, 3))) { + uint32_t reg_offset = 0; + uint32_t grace_period = 1; + + retval = pm_update_grace_period(&dqm->packet_mgr, + grace_period); + if (retval) + pr_err("Setting grace timeout failed\n"); + else if (dqm->dev->kfd2kgd->build_grace_period_packet_info) + /* Update dqm->wait_times maintained in software */ + dqm->dev->kfd2kgd->build_grace_period_packet_info( + dqm->dev->adev, dqm->wait_times, + grace_period, ®_offset, + &dqm->wait_times); + } + + dqm_unlock(dqm); + + return 0; +fail_allocate_vidmem: +fail_set_sched_resources: + if (!dqm->dev->kfd->shared_resources.enable_mes) + pm_uninit(&dqm->packet_mgr, false); +fail_packet_manager_init: + dqm_unlock(dqm); + return retval; +} + +static int stop_cpsch(struct device_queue_manager *dqm) +{ + bool hanging; + + dqm_lock(dqm); + if (!dqm->sched_running) { + dqm_unlock(dqm); + return 0; + } + + if (!dqm->is_hws_hang) { + if (!dqm->dev->kfd->shared_resources.enable_mes) + unmap_queues_cpsch(dqm, KFD_UNMAP_QUEUES_FILTER_ALL_QUEUES, 0, USE_DEFAULT_GRACE_PERIOD, false); + else + remove_all_queues_mes(dqm); + } + + hanging = dqm->is_hws_hang || dqm->is_resetting; + dqm->sched_running = false; + + if (!dqm->dev->kfd->shared_resources.enable_mes) + pm_release_ib(&dqm->packet_mgr); + + kfd_gtt_sa_free(dqm->dev, dqm->fence_mem); + if (!dqm->dev->kfd->shared_resources.enable_mes) + pm_uninit(&dqm->packet_mgr, hanging); + dqm_unlock(dqm); + + 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); + increment_queue_count(dqm, qpd, kq->queue); + qpd->is_debug = true; + execute_queues_cpsch(dqm, KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES, 0, + USE_DEFAULT_GRACE_PERIOD); + 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); + decrement_queue_count(dqm, qpd, kq->queue); + qpd->is_debug = false; + 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. + */ + 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, + const struct kfd_criu_queue_priv_data *qd, + const void *restore_mqd, const void *restore_ctl_stack) +{ + int retval; + struct mqd_manager *mqd_mgr; + + 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; + } + + if (q->properties.type == KFD_QUEUE_TYPE_SDMA || + q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI) { + dqm_lock(dqm); + retval = allocate_sdma_queue(dqm, q, qd ? &qd->sdma_id : NULL); + dqm_unlock(dqm); + if (retval) + goto out; + } + + retval = allocate_doorbell(qpd, q, qd ? &qd->doorbell_id : NULL); + if (retval) + goto out_deallocate_sdma_queue; + + mqd_mgr = dqm->mqd_mgrs[get_mqd_type_from_queue_type( + q->properties.type)]; + + if (q->properties.type == KFD_QUEUE_TYPE_SDMA || + q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI) + dqm->asic_ops.init_sdma_vm(dqm, q, qpd); + q->properties.tba_addr = qpd->tba_addr; + q->properties.tma_addr = qpd->tma_addr; + q->mqd_mem_obj = mqd_mgr->allocate_mqd(mqd_mgr->dev, &q->properties); + if (!q->mqd_mem_obj) { + retval = -ENOMEM; + goto out_deallocate_doorbell; + } + + dqm_lock(dqm); + /* + * Eviction state logic: mark all queues as evicted, even ones + * not currently active. Restoring inactive queues later only + * updates the is_evicted flag but is a no-op otherwise. + */ + q->properties.is_evicted = !!qpd->evicted; + q->properties.is_dbg_wa = qpd->pqm->process->debug_trap_enabled && + kfd_dbg_has_cwsr_workaround(q->device); + + if (qd) + mqd_mgr->restore_mqd(mqd_mgr, &q->mqd, q->mqd_mem_obj, &q->gart_mqd_addr, + &q->properties, restore_mqd, restore_ctl_stack, + qd->ctl_stack_size); + else + mqd_mgr->init_mqd(mqd_mgr, &q->mqd, q->mqd_mem_obj, + &q->gart_mqd_addr, &q->properties); + + list_add(&q->list, &qpd->queues_list); + qpd->queue_count++; + + if (q->properties.is_active) { + increment_queue_count(dqm, qpd, q); + + if (!dqm->dev->kfd->shared_resources.enable_mes) + retval = execute_queues_cpsch(dqm, + KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES, 0, USE_DEFAULT_GRACE_PERIOD); + else + retval = add_queue_mes(dqm, q, qpd); + if (retval) + goto cleanup_queue; + } + + /* + * 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; + +cleanup_queue: + qpd->queue_count--; + list_del(&q->list); + if (q->properties.is_active) + decrement_queue_count(dqm, qpd, q); + mqd_mgr->free_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj); + dqm_unlock(dqm); +out_deallocate_doorbell: + deallocate_doorbell(qpd, q); +out_deallocate_sdma_queue: + if (q->properties.type == KFD_QUEUE_TYPE_SDMA || + q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI) { + dqm_lock(dqm); + deallocate_sdma_queue(dqm, q); + dqm_unlock(dqm); + } +out: + return retval; +} + +int amdkfd_fence_wait_timeout(uint64_t *fence_addr, + uint64_t 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; +} + +/* 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->sched_running) + return 0; + if (dqm->active_queue_count <= 0 || dqm->processes_count <= 0) + return 0; + if (dqm->active_runlist) + return 0; + + retval = pm_send_runlist(&dqm->packet_mgr, &dqm->queues); + pr_debug("%s sent runlist\n", __func__); + 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, + uint32_t grace_period, + bool reset) +{ + int retval = 0; + struct mqd_manager *mqd_mgr; + + if (!dqm->sched_running) + return 0; + if (dqm->is_hws_hang || dqm->is_resetting) + return -EIO; + 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; + + *dqm->fence_addr = KFD_FENCE_INIT; + pm_send_query_status(&dqm->packet_mgr, dqm->fence_gpu_addr, + KFD_FENCE_COMPLETED); + /* should be timed out */ + retval = amdkfd_fence_wait_timeout(dqm->fence_addr, KFD_FENCE_COMPLETED, + queue_preemption_timeout_ms); + if (retval) { + pr_err("The cp might be in an unrecoverable state due to an unsuccessful queues preemption\n"); + kfd_hws_hang(dqm); + return retval; + } + + /* In the current MEC firmware implementation, if compute queue + * doesn't response to the preemption request in time, HIQ will + * abandon the unmap request without returning any timeout error + * to driver. Instead, MEC firmware will log the doorbell of the + * unresponding compute queue to HIQ.MQD.queue_doorbell_id fields. + * To make sure the queue unmap was successful, driver need to + * check those fields + */ + mqd_mgr = dqm->mqd_mgrs[KFD_MQD_TYPE_HIQ]; + if (mqd_mgr->read_doorbell_id(dqm->packet_mgr.priv_queue->queue->mqd)) { + pr_err("HIQ MQD's queue_doorbell_id0 is not 0, Queue preemption time out\n"); + while (halt_if_hws_hang) + schedule(); + 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; + + return retval; +} + +/* only for compute queue */ +static int reset_queues_cpsch(struct device_queue_manager *dqm, + uint16_t pasid) +{ + int retval; + + dqm_lock(dqm); + + retval = unmap_queues_cpsch(dqm, KFD_UNMAP_QUEUES_FILTER_BY_PASID, + pasid, USE_DEFAULT_GRACE_PERIOD, true); + + dqm_unlock(dqm); + 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, + uint32_t grace_period) +{ + int retval; + + if (dqm->is_hws_hang) + return -EIO; + retval = unmap_queues_cpsch(dqm, filter, filter_param, grace_period, false); + if (retval) + return retval; + + return map_queues_cpsch(dqm); +} + +static int wait_on_destroy_queue(struct device_queue_manager *dqm, + struct queue *q) +{ + struct kfd_process_device *pdd = kfd_get_process_device_data(q->device, + q->process); + int ret = 0; + + if (pdd->qpd.is_debug) + return ret; + + q->properties.is_being_destroyed = true; + + if (pdd->process->debug_trap_enabled && q->properties.is_suspended) { + dqm_unlock(dqm); + mutex_unlock(&q->process->mutex); + ret = wait_event_interruptible(dqm->destroy_wait, + !q->properties.is_suspended); + + mutex_lock(&q->process->mutex); + dqm_lock(dqm); + } + + return ret; +} + +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; + uint64_t sdma_val = 0; + struct kfd_process_device *pdd = qpd_to_pdd(qpd); + + /* Get the SDMA queue stats */ + if ((q->properties.type == KFD_QUEUE_TYPE_SDMA) || + (q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI)) { + retval = read_sdma_queue_counter((uint64_t __user *)q->properties.read_ptr, + &sdma_val); + if (retval) + pr_err("Failed to read SDMA queue counter for queue: %d\n", + q->properties.queue_id); + } + + /* remove queue from list to prevent rescheduling after preemption */ + dqm_lock(dqm); + + retval = wait_on_destroy_queue(dqm, q); + + if (retval) { + dqm_unlock(dqm); + return retval; + } + + 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->mqd_mgrs[get_mqd_type_from_queue_type( + q->properties.type)]; + + deallocate_doorbell(qpd, q); + + if ((q->properties.type == KFD_QUEUE_TYPE_SDMA) || + (q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI)) { + deallocate_sdma_queue(dqm, q); + pdd->sdma_past_activity_counter += sdma_val; + } + + list_del(&q->list); + qpd->queue_count--; + if (q->properties.is_active) { + decrement_queue_count(dqm, qpd, q); + if (!dqm->dev->kfd->shared_resources.enable_mes) { + retval = execute_queues_cpsch(dqm, + KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES, 0, + USE_DEFAULT_GRACE_PERIOD); + if (retval == -ETIME) + qpd->reset_wavefronts = true; + } else { + retval = remove_queue_mes(dqm, q, qpd); + } + } + + /* + * 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); + + /* + * Do free_mqd and raise delete event after dqm_unlock(dqm) to avoid + * circular locking + */ + kfd_dbg_ev_raise(KFD_EC_MASK(EC_DEVICE_QUEUE_DELETE), + qpd->pqm->process, q->device, + -1, false, NULL, 0); + + mqd_mgr->free_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj); + + return retval; + +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 process_termination_nocpsch(struct device_queue_manager *dqm, + struct qcm_process_device *qpd) +{ + struct queue *q; + struct device_process_node *cur, *next_dpn; + int retval = 0; + bool found = false; + + dqm_lock(dqm); + + /* Clear all user mode queues */ + while (!list_empty(&qpd->queues_list)) { + struct mqd_manager *mqd_mgr; + int ret; + + q = list_first_entry(&qpd->queues_list, struct queue, list); + mqd_mgr = dqm->mqd_mgrs[get_mqd_type_from_queue_type( + q->properties.type)]; + ret = destroy_queue_nocpsch_locked(dqm, qpd, q); + if (ret) + retval = ret; + dqm_unlock(dqm); + mqd_mgr->free_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj); + dqm_lock(dqm); + } + + /* 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--; + found = true; + break; + } + } + + dqm_unlock(dqm); + + /* Outside the DQM lock because under the DQM lock we can't do + * reclaim or take other locks that others hold while reclaiming. + */ + if (found) + kfd_dec_compute_active(dqm->dev); + + 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; + + dqm_lock(dqm); + + mqd_mgr = dqm->mqd_mgrs[KFD_MQD_TYPE_CP]; + + if (q->properties.type != KFD_QUEUE_TYPE_COMPUTE || + q->properties.is_active || !q->device->kfd->cwsr_enabled || + !mqd_mgr->get_wave_state) { + dqm_unlock(dqm); + return -EINVAL; + } + + dqm_unlock(dqm); + + /* + * get_wave_state is outside the dqm lock to prevent circular locking + * and the queue should be protected against destruction by the process + * lock. + */ + return mqd_mgr->get_wave_state(mqd_mgr, q->mqd, &q->properties, + ctl_stack, ctl_stack_used_size, save_area_used_size); +} + +static void get_queue_checkpoint_info(struct device_queue_manager *dqm, + const struct queue *q, + u32 *mqd_size, + u32 *ctl_stack_size) +{ + struct mqd_manager *mqd_mgr; + enum KFD_MQD_TYPE mqd_type = + get_mqd_type_from_queue_type(q->properties.type); + + dqm_lock(dqm); + mqd_mgr = dqm->mqd_mgrs[mqd_type]; + *mqd_size = mqd_mgr->mqd_size; + *ctl_stack_size = 0; + + if (q->properties.type == KFD_QUEUE_TYPE_COMPUTE && mqd_mgr->get_checkpoint_info) + mqd_mgr->get_checkpoint_info(mqd_mgr, q->mqd, ctl_stack_size); + + dqm_unlock(dqm); +} + +static int checkpoint_mqd(struct device_queue_manager *dqm, + const struct queue *q, + void *mqd, + void *ctl_stack) +{ + struct mqd_manager *mqd_mgr; + int r = 0; + enum KFD_MQD_TYPE mqd_type = + get_mqd_type_from_queue_type(q->properties.type); + + dqm_lock(dqm); + + if (q->properties.is_active || !q->device->kfd->cwsr_enabled) { + r = -EINVAL; + goto dqm_unlock; + } + + mqd_mgr = dqm->mqd_mgrs[mqd_type]; + if (!mqd_mgr->checkpoint_mqd) { + r = -EOPNOTSUPP; + goto dqm_unlock; + } + + mqd_mgr->checkpoint_mqd(mqd_mgr, q->mqd, mqd, ctl_stack); + +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; + 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; + bool found = false; + + 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); + decrement_queue_count(dqm, qpd, kq->queue); + 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) + deallocate_sdma_queue(dqm, q); + else if (q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI) + deallocate_sdma_queue(dqm, q); + + if (q->properties.is_active) { + decrement_queue_count(dqm, qpd, q); + + if (dqm->dev->kfd->shared_resources.enable_mes) { + retval = remove_queue_mes(dqm, q, qpd); + if (retval) + pr_err("Failed to remove queue %d\n", + q->properties.queue_id); + } + } + + 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--; + found = true; + break; + } + } + + if (!dqm->dev->kfd->shared_resources.enable_mes) + 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); + dbgdev_wave_reset_wavefronts(dqm->dev, qpd->pqm->process); + qpd->reset_wavefronts = false; + } + + /* Lastly, free mqd resources. + * Do free_mqd() after dqm_unlock to avoid circular locking. + */ + while (!list_empty(&qpd->queues_list)) { + q = list_first_entry(&qpd->queues_list, struct queue, list); + mqd_mgr = dqm->mqd_mgrs[get_mqd_type_from_queue_type( + q->properties.type)]; + list_del(&q->list); + qpd->queue_count--; + dqm_unlock(dqm); + mqd_mgr->free_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj); + dqm_lock(dqm); + } + dqm_unlock(dqm); + + /* Outside the DQM lock because under the DQM lock we can't do + * reclaim or take other locks that others hold while reclaiming. + */ + if (found) + kfd_dec_compute_active(dqm->dev); + + return retval; +} + +static int init_mqd_managers(struct device_queue_manager *dqm) +{ + int i, j; + struct mqd_manager *mqd_mgr; + + for (i = 0; i < KFD_MQD_TYPE_MAX; i++) { + mqd_mgr = dqm->asic_ops.mqd_manager_init(i, dqm->dev); + if (!mqd_mgr) { + pr_err("mqd manager [%d] initialization failed\n", i); + goto out_free; + } + dqm->mqd_mgrs[i] = mqd_mgr; + } + + return 0; + +out_free: + for (j = 0; j < i; j++) { + kfree(dqm->mqd_mgrs[j]); + dqm->mqd_mgrs[j] = NULL; + } + + return -ENOMEM; +} + +/* Allocate one hiq mqd (HWS) and all SDMA mqd in a continuous trunk*/ +static int allocate_hiq_sdma_mqd(struct device_queue_manager *dqm) +{ + int retval; + struct kfd_node *dev = dqm->dev; + struct kfd_mem_obj *mem_obj = &dqm->hiq_sdma_mqd; + uint32_t size = dqm->mqd_mgrs[KFD_MQD_TYPE_SDMA]->mqd_size * + get_num_all_sdma_engines(dqm) * + dev->kfd->device_info.num_sdma_queues_per_engine + + (dqm->mqd_mgrs[KFD_MQD_TYPE_HIQ]->mqd_size * + NUM_XCC(dqm->dev->xcc_mask)); + + retval = amdgpu_amdkfd_alloc_gtt_mem(dev->adev, size, + &(mem_obj->gtt_mem), &(mem_obj->gpu_addr), + (void *)&(mem_obj->cpu_ptr), false); + + return retval; +} + +struct device_queue_manager *device_queue_manager_init(struct kfd_node *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->adev->asic_type) { + /* 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.pre_reset = pre_reset; + dqm->ops.destroy_queue = destroy_queue_cpsch; + dqm->ops.update_queue = update_queue; + 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.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; + dqm->ops.reset_queues = reset_queues_cpsch; + dqm->ops.get_queue_checkpoint_info = get_queue_checkpoint_info; + dqm->ops.checkpoint_mqd = checkpoint_mqd; + 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.pre_reset = pre_reset; + dqm->ops.create_queue = create_queue_nocpsch; + dqm->ops.destroy_queue = destroy_queue_nocpsch; + dqm->ops.update_queue = update_queue; + 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.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; + dqm->ops.get_queue_checkpoint_info = get_queue_checkpoint_info; + dqm->ops.checkpoint_mqd = checkpoint_mqd; + break; + default: + pr_err("Invalid scheduling policy %d\n", dqm->sched_policy); + goto out_free; + } + + switch (dev->adev->asic_type) { + case CHIP_KAVERI: + case CHIP_HAWAII: + device_queue_manager_init_cik(&dqm->asic_ops); + break; + + case CHIP_CARRIZO: + case CHIP_TONGA: + case CHIP_FIJI: + case CHIP_POLARIS10: + case CHIP_POLARIS11: + case CHIP_POLARIS12: + case CHIP_VEGAM: + device_queue_manager_init_vi(&dqm->asic_ops); + break; + + default: + if (KFD_GC_VERSION(dev) >= IP_VERSION(11, 0, 0)) + device_queue_manager_init_v11(&dqm->asic_ops); + else if (KFD_GC_VERSION(dev) >= IP_VERSION(10, 1, 1)) + device_queue_manager_init_v10(&dqm->asic_ops); + else if (KFD_GC_VERSION(dev) >= IP_VERSION(9, 0, 1)) + device_queue_manager_init_v9(&dqm->asic_ops); + else { + WARN(1, "Unexpected ASIC family %u", + dev->adev->asic_type); + goto out_free; + } + } + + if (init_mqd_managers(dqm)) + goto out_free; + + if (!dev->kfd->shared_resources.enable_mes && allocate_hiq_sdma_mqd(dqm)) { + pr_err("Failed to allocate hiq sdma mqd trunk buffer\n"); + goto out_free; + } + + if (!dqm->ops.initialize(dqm)) { + init_waitqueue_head(&dqm->destroy_wait); + return dqm; + } + +out_free: + kfree(dqm); + return NULL; +} + +static void deallocate_hiq_sdma_mqd(struct kfd_node *dev, + struct kfd_mem_obj *mqd) +{ + WARN(!mqd, "No hiq sdma mqd trunk to free"); + + amdgpu_amdkfd_free_gtt_mem(dev->adev, mqd->gtt_mem); +} + +void device_queue_manager_uninit(struct device_queue_manager *dqm) +{ + dqm->ops.stop(dqm); + dqm->ops.uninitialize(dqm); + if (!dqm->dev->kfd->shared_resources.enable_mes) + deallocate_hiq_sdma_mqd(dqm->dev, &dqm->hiq_sdma_mqd); + kfree(dqm); +} + +int kfd_dqm_evict_pasid(struct device_queue_manager *dqm, u32 pasid) +{ + struct kfd_process_device *pdd; + struct kfd_process *p = kfd_lookup_process_by_pasid(pasid); + int ret = 0; + + if (!p) + return -EINVAL; + WARN(debug_evictions, "Evicting pid %d", p->lead_thread->pid); + 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->adev); +} + +int reserve_debug_trap_vmid(struct device_queue_manager *dqm, + struct qcm_process_device *qpd) +{ + int r; + int updated_vmid_mask; + + if (dqm->sched_policy == KFD_SCHED_POLICY_NO_HWS) { + pr_err("Unsupported on sched_policy: %i\n", dqm->sched_policy); + return -EINVAL; + } + + dqm_lock(dqm); + + if (dqm->trap_debug_vmid != 0) { + pr_err("Trap debug id already reserved\n"); + r = -EBUSY; + goto out_unlock; + } + + r = unmap_queues_cpsch(dqm, KFD_UNMAP_QUEUES_FILTER_ALL_QUEUES, 0, + USE_DEFAULT_GRACE_PERIOD, false); + if (r) + goto out_unlock; + + updated_vmid_mask = dqm->dev->kfd->shared_resources.compute_vmid_bitmap; + updated_vmid_mask &= ~(1 << dqm->dev->vm_info.last_vmid_kfd); + + dqm->dev->kfd->shared_resources.compute_vmid_bitmap = updated_vmid_mask; + dqm->trap_debug_vmid = dqm->dev->vm_info.last_vmid_kfd; + r = set_sched_resources(dqm); + if (r) + goto out_unlock; + + r = map_queues_cpsch(dqm); + if (r) + goto out_unlock; + + pr_debug("Reserved VMID for trap debug: %i\n", dqm->trap_debug_vmid); + +out_unlock: + dqm_unlock(dqm); + return r; +} + +/* + * Releases vmid for the trap debugger + */ +int release_debug_trap_vmid(struct device_queue_manager *dqm, + struct qcm_process_device *qpd) +{ + int r; + int updated_vmid_mask; + uint32_t trap_debug_vmid; + + if (dqm->sched_policy == KFD_SCHED_POLICY_NO_HWS) { + pr_err("Unsupported on sched_policy: %i\n", dqm->sched_policy); + return -EINVAL; + } + + dqm_lock(dqm); + trap_debug_vmid = dqm->trap_debug_vmid; + if (dqm->trap_debug_vmid == 0) { + pr_err("Trap debug id is not reserved\n"); + r = -EINVAL; + goto out_unlock; + } + + r = unmap_queues_cpsch(dqm, KFD_UNMAP_QUEUES_FILTER_ALL_QUEUES, 0, + USE_DEFAULT_GRACE_PERIOD, false); + if (r) + goto out_unlock; + + updated_vmid_mask = dqm->dev->kfd->shared_resources.compute_vmid_bitmap; + updated_vmid_mask |= (1 << dqm->dev->vm_info.last_vmid_kfd); + + dqm->dev->kfd->shared_resources.compute_vmid_bitmap = updated_vmid_mask; + dqm->trap_debug_vmid = 0; + r = set_sched_resources(dqm); + if (r) + goto out_unlock; + + r = map_queues_cpsch(dqm); + if (r) + goto out_unlock; + + pr_debug("Released VMID for trap debug: %i\n", trap_debug_vmid); + +out_unlock: + dqm_unlock(dqm); + return r; +} + +#define QUEUE_NOT_FOUND -1 +/* invalidate queue operation in array */ +static void q_array_invalidate(uint32_t num_queues, uint32_t *queue_ids) +{ + int i; + + for (i = 0; i < num_queues; i++) + queue_ids[i] |= KFD_DBG_QUEUE_INVALID_MASK; +} + +/* find queue index in array */ +static int q_array_get_index(unsigned int queue_id, + uint32_t num_queues, + uint32_t *queue_ids) +{ + int i; + + for (i = 0; i < num_queues; i++) + if (queue_id == (queue_ids[i] & ~KFD_DBG_QUEUE_INVALID_MASK)) + return i; + + return QUEUE_NOT_FOUND; +} + +struct copy_context_work_handler_workarea { + struct work_struct copy_context_work; + struct kfd_process *p; +}; + +static void copy_context_work_handler (struct work_struct *work) +{ + struct copy_context_work_handler_workarea *workarea; + struct mqd_manager *mqd_mgr; + struct queue *q; + struct mm_struct *mm; + struct kfd_process *p; + uint32_t tmp_ctl_stack_used_size, tmp_save_area_used_size; + int i; + + workarea = container_of(work, + struct copy_context_work_handler_workarea, + copy_context_work); + + p = workarea->p; + mm = get_task_mm(p->lead_thread); + + if (!mm) + return; + + kthread_use_mm(mm); + for (i = 0; i < p->n_pdds; i++) { + struct kfd_process_device *pdd = p->pdds[i]; + struct device_queue_manager *dqm = pdd->dev->dqm; + struct qcm_process_device *qpd = &pdd->qpd; + + list_for_each_entry(q, &qpd->queues_list, list) { + mqd_mgr = dqm->mqd_mgrs[KFD_MQD_TYPE_CP]; + + /* We ignore the return value from get_wave_state + * because + * i) right now, it always returns 0, and + * ii) if we hit an error, we would continue to the + * next queue anyway. + */ + mqd_mgr->get_wave_state(mqd_mgr, + q->mqd, + &q->properties, + (void __user *) q->properties.ctx_save_restore_area_address, + &tmp_ctl_stack_used_size, + &tmp_save_area_used_size); + } + } + kthread_unuse_mm(mm); + mmput(mm); +} + +static uint32_t *get_queue_ids(uint32_t num_queues, uint32_t *usr_queue_id_array) +{ + size_t array_size = num_queues * sizeof(uint32_t); + + if (!usr_queue_id_array) + return NULL; + + return memdup_user(usr_queue_id_array, array_size); +} + +int resume_queues(struct kfd_process *p, + uint32_t num_queues, + uint32_t *usr_queue_id_array) +{ + uint32_t *queue_ids = NULL; + int total_resumed = 0; + int i; + + if (usr_queue_id_array) { + queue_ids = get_queue_ids(num_queues, usr_queue_id_array); + + if (IS_ERR(queue_ids)) + return PTR_ERR(queue_ids); + + /* mask all queues as invalid. unmask per successful request */ + q_array_invalidate(num_queues, queue_ids); + } + + for (i = 0; i < p->n_pdds; i++) { + struct kfd_process_device *pdd = p->pdds[i]; + struct device_queue_manager *dqm = pdd->dev->dqm; + struct qcm_process_device *qpd = &pdd->qpd; + struct queue *q; + int r, per_device_resumed = 0; + + dqm_lock(dqm); + + /* unmask queues that resume or already resumed as valid */ + list_for_each_entry(q, &qpd->queues_list, list) { + int q_idx = QUEUE_NOT_FOUND; + + if (queue_ids) + q_idx = q_array_get_index( + q->properties.queue_id, + num_queues, + queue_ids); + + if (!queue_ids || q_idx != QUEUE_NOT_FOUND) { + int err = resume_single_queue(dqm, &pdd->qpd, q); + + if (queue_ids) { + if (!err) { + queue_ids[q_idx] &= + ~KFD_DBG_QUEUE_INVALID_MASK; + } else { + queue_ids[q_idx] |= + KFD_DBG_QUEUE_ERROR_MASK; + break; + } + } + + if (dqm->dev->kfd->shared_resources.enable_mes) { + wake_up_all(&dqm->destroy_wait); + if (!err) + total_resumed++; + } else { + per_device_resumed++; + } + } + } + + if (!per_device_resumed) { + dqm_unlock(dqm); + continue; + } + + r = execute_queues_cpsch(dqm, + KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES, + 0, + USE_DEFAULT_GRACE_PERIOD); + if (r) { + pr_err("Failed to resume process queues\n"); + if (queue_ids) { + list_for_each_entry(q, &qpd->queues_list, list) { + int q_idx = q_array_get_index( + q->properties.queue_id, + num_queues, + queue_ids); + + /* mask queue as error on resume fail */ + if (q_idx != QUEUE_NOT_FOUND) + queue_ids[q_idx] |= + KFD_DBG_QUEUE_ERROR_MASK; + } + } + } else { + wake_up_all(&dqm->destroy_wait); + total_resumed += per_device_resumed; + } + + dqm_unlock(dqm); + } + + if (queue_ids) { + if (copy_to_user((void __user *)usr_queue_id_array, queue_ids, + num_queues * sizeof(uint32_t))) + pr_err("copy_to_user failed on queue resume\n"); + + kfree(queue_ids); + } + + return total_resumed; +} + +int suspend_queues(struct kfd_process *p, + uint32_t num_queues, + uint32_t grace_period, + uint64_t exception_clear_mask, + uint32_t *usr_queue_id_array) +{ + uint32_t *queue_ids = get_queue_ids(num_queues, usr_queue_id_array); + int total_suspended = 0; + int i; + + if (IS_ERR(queue_ids)) + return PTR_ERR(queue_ids); + + /* mask all queues as invalid. umask on successful request */ + q_array_invalidate(num_queues, queue_ids); + + for (i = 0; i < p->n_pdds; i++) { + struct kfd_process_device *pdd = p->pdds[i]; + struct device_queue_manager *dqm = pdd->dev->dqm; + struct qcm_process_device *qpd = &pdd->qpd; + struct queue *q; + int r, per_device_suspended = 0; + + mutex_lock(&p->event_mutex); + dqm_lock(dqm); + + /* unmask queues that suspend or already suspended */ + list_for_each_entry(q, &qpd->queues_list, list) { + int q_idx = q_array_get_index(q->properties.queue_id, + num_queues, + queue_ids); + + if (q_idx != QUEUE_NOT_FOUND) { + int err = suspend_single_queue(dqm, pdd, q); + bool is_mes = dqm->dev->kfd->shared_resources.enable_mes; + + if (!err) { + queue_ids[q_idx] &= ~KFD_DBG_QUEUE_INVALID_MASK; + if (exception_clear_mask && is_mes) + q->properties.exception_status &= + ~exception_clear_mask; + + if (is_mes) + total_suspended++; + else + per_device_suspended++; + } else if (err != -EBUSY) { + r = err; + queue_ids[q_idx] |= KFD_DBG_QUEUE_ERROR_MASK; + break; + } + } + } + + if (!per_device_suspended) { + dqm_unlock(dqm); + mutex_unlock(&p->event_mutex); + if (total_suspended) + amdgpu_amdkfd_debug_mem_fence(dqm->dev->adev); + continue; + } + + r = execute_queues_cpsch(dqm, + KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES, 0, + grace_period); + + if (r) + pr_err("Failed to suspend process queues.\n"); + else + total_suspended += per_device_suspended; + + list_for_each_entry(q, &qpd->queues_list, list) { + int q_idx = q_array_get_index(q->properties.queue_id, + num_queues, queue_ids); + + if (q_idx == QUEUE_NOT_FOUND) + continue; + + /* mask queue as error on suspend fail */ + if (r) + queue_ids[q_idx] |= KFD_DBG_QUEUE_ERROR_MASK; + else if (exception_clear_mask) + q->properties.exception_status &= + ~exception_clear_mask; + } + + dqm_unlock(dqm); + mutex_unlock(&p->event_mutex); + amdgpu_device_flush_hdp(dqm->dev->adev, NULL); + } + + if (total_suspended) { + struct copy_context_work_handler_workarea copy_context_worker; + + INIT_WORK_ONSTACK( + ©_context_worker.copy_context_work, + copy_context_work_handler); + + copy_context_worker.p = p; + + schedule_work(©_context_worker.copy_context_work); + + + flush_work(©_context_worker.copy_context_work); + destroy_work_on_stack(©_context_worker.copy_context_work); + } + + if (copy_to_user((void __user *)usr_queue_id_array, queue_ids, + num_queues * sizeof(uint32_t))) + pr_err("copy_to_user failed on queue suspend\n"); + + kfree(queue_ids); + + return total_suspended; +} + +static uint32_t set_queue_type_for_user(struct queue_properties *q_props) +{ + switch (q_props->type) { + case KFD_QUEUE_TYPE_COMPUTE: + return q_props->format == KFD_QUEUE_FORMAT_PM4 + ? KFD_IOC_QUEUE_TYPE_COMPUTE + : KFD_IOC_QUEUE_TYPE_COMPUTE_AQL; + case KFD_QUEUE_TYPE_SDMA: + return KFD_IOC_QUEUE_TYPE_SDMA; + case KFD_QUEUE_TYPE_SDMA_XGMI: + return KFD_IOC_QUEUE_TYPE_SDMA_XGMI; + default: + WARN_ONCE(true, "queue type not recognized!"); + return 0xffffffff; + }; +} + +void set_queue_snapshot_entry(struct queue *q, + uint64_t exception_clear_mask, + struct kfd_queue_snapshot_entry *qss_entry) +{ + qss_entry->ring_base_address = q->properties.queue_address; + qss_entry->write_pointer_address = (uint64_t)q->properties.write_ptr; + qss_entry->read_pointer_address = (uint64_t)q->properties.read_ptr; + qss_entry->ctx_save_restore_address = + q->properties.ctx_save_restore_area_address; + qss_entry->ctx_save_restore_area_size = + q->properties.ctx_save_restore_area_size; + qss_entry->exception_status = q->properties.exception_status; + qss_entry->queue_id = q->properties.queue_id; + qss_entry->gpu_id = q->device->id; + qss_entry->ring_size = (uint32_t)q->properties.queue_size; + qss_entry->queue_type = set_queue_type_for_user(&q->properties); + q->properties.exception_status &= ~exception_clear_mask; +} + +int debug_lock_and_unmap(struct device_queue_manager *dqm) +{ + int r; + + if (dqm->sched_policy == KFD_SCHED_POLICY_NO_HWS) { + pr_err("Unsupported on sched_policy: %i\n", dqm->sched_policy); + return -EINVAL; + } + + if (!kfd_dbg_is_per_vmid_supported(dqm->dev)) + return 0; + + dqm_lock(dqm); + + r = unmap_queues_cpsch(dqm, KFD_UNMAP_QUEUES_FILTER_ALL_QUEUES, 0, 0, false); + if (r) + dqm_unlock(dqm); + + return r; +} + +int debug_map_and_unlock(struct device_queue_manager *dqm) +{ + int r; + + if (dqm->sched_policy == KFD_SCHED_POLICY_NO_HWS) { + pr_err("Unsupported on sched_policy: %i\n", dqm->sched_policy); + return -EINVAL; + } + + if (!kfd_dbg_is_per_vmid_supported(dqm->dev)) + return 0; + + r = map_queues_cpsch(dqm); + + dqm_unlock(dqm); + + return r; +} + +int debug_refresh_runlist(struct device_queue_manager *dqm) +{ + int r = debug_lock_and_unmap(dqm); + + if (r) + return r; + + return debug_map_and_unlock(dqm); +} + +#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 xcc_mask = dqm->dev->xcc_mask; + uint32_t (*dump)[2], n_regs; + int pipe, queue; + int r = 0, xcc_id; + uint32_t sdma_engine_start; + + if (!dqm->sched_running) { + seq_puts(m, " Device is stopped\n"); + return 0; + } + + for_each_inst(xcc_id, xcc_mask) { + r = dqm->dev->kfd2kgd->hqd_dump(dqm->dev->adev, + KFD_CIK_HIQ_PIPE, + KFD_CIK_HIQ_QUEUE, &dump, + &n_regs, xcc_id); + if (!r) { + seq_printf( + m, + " Inst %d, HIQ on MEC %d Pipe %d Queue %d\n", + xcc_id, + 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->kfd->shared_resources.cp_queue_bitmap)) + continue; + + r = dqm->dev->kfd2kgd->hqd_dump(dqm->dev->adev, + pipe, queue, + &dump, &n_regs, + xcc_id); + if (r) + break; + + seq_printf(m, + " Inst %d, CP Pipe %d, Queue %d\n", + xcc_id, pipe, queue); + seq_reg_dump(m, dump, n_regs); + + kfree(dump); + } + } + } + + sdma_engine_start = dqm->dev->node_id * get_num_all_sdma_engines(dqm); + for (pipe = sdma_engine_start; + pipe < (sdma_engine_start + get_num_all_sdma_engines(dqm)); + pipe++) { + for (queue = 0; + queue < dqm->dev->kfd->device_info.num_sdma_queues_per_engine; + queue++) { + r = dqm->dev->kfd2kgd->hqd_sdma_dump( + dqm->dev->adev, 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_hang_hws(struct device_queue_manager *dqm) +{ + int r = 0; + + dqm_lock(dqm); + r = pm_debugfs_hang_hws(&dqm->packet_mgr); + if (r) { + dqm_unlock(dqm); + return r; + } + dqm->active_runlist = true; + r = execute_queues_cpsch(dqm, KFD_UNMAP_QUEUES_FILTER_ALL_QUEUES, + 0, USE_DEFAULT_GRACE_PERIOD); + dqm_unlock(dqm); + + return r; +} + +#endif |