626 lines
15 KiB
C
626 lines
15 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (C) 2020-2023 Intel Corporation
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*/
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#include <drm/drm_file.h>
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#include <linux/bitfield.h>
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#include <linux/highmem.h>
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#include <linux/kthread.h>
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#include <linux/pci.h>
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#include <linux/module.h>
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#include <uapi/drm/ivpu_accel.h>
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#include "ivpu_drv.h"
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#include "ivpu_hw.h"
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#include "ivpu_ipc.h"
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#include "ivpu_job.h"
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#include "ivpu_jsm_msg.h"
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#include "ivpu_pm.h"
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#define CMD_BUF_IDX 0
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#define JOB_ID_JOB_MASK GENMASK(7, 0)
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#define JOB_ID_CONTEXT_MASK GENMASK(31, 8)
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#define JOB_MAX_BUFFER_COUNT 65535
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static unsigned int ivpu_tdr_timeout_ms;
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module_param_named(tdr_timeout_ms, ivpu_tdr_timeout_ms, uint, 0644);
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MODULE_PARM_DESC(tdr_timeout_ms, "Timeout for device hang detection, in milliseconds, 0 - default");
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static void ivpu_cmdq_ring_db(struct ivpu_device *vdev, struct ivpu_cmdq *cmdq)
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{
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ivpu_hw_reg_db_set(vdev, cmdq->db_id);
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}
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static struct ivpu_cmdq *ivpu_cmdq_alloc(struct ivpu_file_priv *file_priv, u16 engine)
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{
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struct ivpu_device *vdev = file_priv->vdev;
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struct vpu_job_queue_header *jobq_header;
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struct ivpu_cmdq *cmdq;
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cmdq = kzalloc(sizeof(*cmdq), GFP_KERNEL);
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if (!cmdq)
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return NULL;
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cmdq->mem = ivpu_bo_alloc_internal(vdev, 0, SZ_4K, DRM_IVPU_BO_WC);
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if (!cmdq->mem)
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goto cmdq_free;
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cmdq->db_id = file_priv->ctx.id + engine * ivpu_get_context_count(vdev);
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cmdq->entry_count = (u32)((cmdq->mem->base.size - sizeof(struct vpu_job_queue_header)) /
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sizeof(struct vpu_job_queue_entry));
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cmdq->jobq = (struct vpu_job_queue *)cmdq->mem->kvaddr;
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jobq_header = &cmdq->jobq->header;
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jobq_header->engine_idx = engine;
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jobq_header->head = 0;
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jobq_header->tail = 0;
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wmb(); /* Flush WC buffer for jobq->header */
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return cmdq;
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cmdq_free:
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kfree(cmdq);
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return NULL;
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}
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static void ivpu_cmdq_free(struct ivpu_file_priv *file_priv, struct ivpu_cmdq *cmdq)
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{
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if (!cmdq)
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return;
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ivpu_bo_free_internal(cmdq->mem);
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kfree(cmdq);
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}
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static struct ivpu_cmdq *ivpu_cmdq_acquire(struct ivpu_file_priv *file_priv, u16 engine)
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{
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struct ivpu_device *vdev = file_priv->vdev;
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struct ivpu_cmdq *cmdq = file_priv->cmdq[engine];
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int ret;
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lockdep_assert_held(&file_priv->lock);
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if (!cmdq) {
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cmdq = ivpu_cmdq_alloc(file_priv, engine);
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if (!cmdq)
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return NULL;
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file_priv->cmdq[engine] = cmdq;
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}
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if (cmdq->db_registered)
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return cmdq;
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ret = ivpu_jsm_register_db(vdev, file_priv->ctx.id, cmdq->db_id,
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cmdq->mem->vpu_addr, cmdq->mem->base.size);
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if (ret)
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return NULL;
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cmdq->db_registered = true;
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return cmdq;
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}
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static void ivpu_cmdq_release_locked(struct ivpu_file_priv *file_priv, u16 engine)
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{
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struct ivpu_cmdq *cmdq = file_priv->cmdq[engine];
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lockdep_assert_held(&file_priv->lock);
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if (cmdq) {
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file_priv->cmdq[engine] = NULL;
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if (cmdq->db_registered)
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ivpu_jsm_unregister_db(file_priv->vdev, cmdq->db_id);
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ivpu_cmdq_free(file_priv, cmdq);
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}
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}
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void ivpu_cmdq_release_all(struct ivpu_file_priv *file_priv)
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{
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int i;
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mutex_lock(&file_priv->lock);
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for (i = 0; i < IVPU_NUM_ENGINES; i++)
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ivpu_cmdq_release_locked(file_priv, i);
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mutex_unlock(&file_priv->lock);
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}
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/*
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* Mark the doorbell as unregistered and reset job queue pointers.
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* This function needs to be called when the VPU hardware is restarted
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* and FW looses job queue state. The next time job queue is used it
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* will be registered again.
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*/
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static void ivpu_cmdq_reset_locked(struct ivpu_file_priv *file_priv, u16 engine)
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{
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struct ivpu_cmdq *cmdq = file_priv->cmdq[engine];
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lockdep_assert_held(&file_priv->lock);
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if (cmdq) {
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cmdq->db_registered = false;
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cmdq->jobq->header.head = 0;
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cmdq->jobq->header.tail = 0;
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wmb(); /* Flush WC buffer for jobq header */
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}
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}
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static void ivpu_cmdq_reset_all(struct ivpu_file_priv *file_priv)
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{
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int i;
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mutex_lock(&file_priv->lock);
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for (i = 0; i < IVPU_NUM_ENGINES; i++)
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ivpu_cmdq_reset_locked(file_priv, i);
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mutex_unlock(&file_priv->lock);
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}
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void ivpu_cmdq_reset_all_contexts(struct ivpu_device *vdev)
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{
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struct ivpu_file_priv *file_priv;
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unsigned long ctx_id;
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xa_for_each(&vdev->context_xa, ctx_id, file_priv) {
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file_priv = ivpu_file_priv_get_by_ctx_id(vdev, ctx_id);
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if (!file_priv)
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continue;
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ivpu_cmdq_reset_all(file_priv);
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ivpu_file_priv_put(&file_priv);
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}
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}
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static int ivpu_cmdq_push_job(struct ivpu_cmdq *cmdq, struct ivpu_job *job)
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{
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struct ivpu_device *vdev = job->vdev;
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struct vpu_job_queue_header *header = &cmdq->jobq->header;
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struct vpu_job_queue_entry *entry;
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u32 tail = READ_ONCE(header->tail);
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u32 next_entry = (tail + 1) % cmdq->entry_count;
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/* Check if there is space left in job queue */
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if (next_entry == header->head) {
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ivpu_dbg(vdev, JOB, "Job queue full: ctx %d engine %d db %d head %d tail %d\n",
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job->file_priv->ctx.id, job->engine_idx, cmdq->db_id, header->head, tail);
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return -EBUSY;
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}
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entry = &cmdq->jobq->job[tail];
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entry->batch_buf_addr = job->cmd_buf_vpu_addr;
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entry->job_id = job->job_id;
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entry->flags = 0;
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wmb(); /* Ensure that tail is updated after filling entry */
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header->tail = next_entry;
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wmb(); /* Flush WC buffer for jobq header */
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return 0;
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}
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struct ivpu_fence {
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struct dma_fence base;
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spinlock_t lock; /* protects base */
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struct ivpu_device *vdev;
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};
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static inline struct ivpu_fence *to_vpu_fence(struct dma_fence *fence)
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{
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return container_of(fence, struct ivpu_fence, base);
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}
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static const char *ivpu_fence_get_driver_name(struct dma_fence *fence)
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{
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return DRIVER_NAME;
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}
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static const char *ivpu_fence_get_timeline_name(struct dma_fence *fence)
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{
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struct ivpu_fence *ivpu_fence = to_vpu_fence(fence);
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return dev_name(ivpu_fence->vdev->drm.dev);
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}
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static const struct dma_fence_ops ivpu_fence_ops = {
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.get_driver_name = ivpu_fence_get_driver_name,
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.get_timeline_name = ivpu_fence_get_timeline_name,
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};
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static struct dma_fence *ivpu_fence_create(struct ivpu_device *vdev)
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{
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struct ivpu_fence *fence;
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fence = kzalloc(sizeof(*fence), GFP_KERNEL);
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if (!fence)
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return NULL;
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fence->vdev = vdev;
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spin_lock_init(&fence->lock);
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dma_fence_init(&fence->base, &ivpu_fence_ops, &fence->lock, dma_fence_context_alloc(1), 1);
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return &fence->base;
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}
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static void job_get(struct ivpu_job *job, struct ivpu_job **link)
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{
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struct ivpu_device *vdev = job->vdev;
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kref_get(&job->ref);
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*link = job;
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ivpu_dbg(vdev, KREF, "Job get: id %u refcount %u\n", job->job_id, kref_read(&job->ref));
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}
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static void job_release(struct kref *ref)
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{
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struct ivpu_job *job = container_of(ref, struct ivpu_job, ref);
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struct ivpu_device *vdev = job->vdev;
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u32 i;
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for (i = 0; i < job->bo_count; i++)
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if (job->bos[i])
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drm_gem_object_put(&job->bos[i]->base);
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dma_fence_put(job->done_fence);
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ivpu_file_priv_put(&job->file_priv);
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ivpu_dbg(vdev, KREF, "Job released: id %u\n", job->job_id);
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kfree(job);
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/* Allow the VPU to get suspended, must be called after ivpu_file_priv_put() */
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ivpu_rpm_put(vdev);
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}
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static void job_put(struct ivpu_job *job)
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{
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struct ivpu_device *vdev = job->vdev;
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ivpu_dbg(vdev, KREF, "Job put: id %u refcount %u\n", job->job_id, kref_read(&job->ref));
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kref_put(&job->ref, job_release);
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}
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static struct ivpu_job *
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ivpu_create_job(struct ivpu_file_priv *file_priv, u32 engine_idx, u32 bo_count)
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{
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struct ivpu_device *vdev = file_priv->vdev;
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struct ivpu_job *job;
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size_t buf_size;
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int ret;
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ret = ivpu_rpm_get(vdev);
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if (ret < 0)
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return NULL;
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buf_size = sizeof(*job) + bo_count * sizeof(struct ivpu_bo *);
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job = kzalloc(buf_size, GFP_KERNEL);
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if (!job)
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goto err_rpm_put;
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kref_init(&job->ref);
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job->vdev = vdev;
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job->engine_idx = engine_idx;
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job->bo_count = bo_count;
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job->done_fence = ivpu_fence_create(vdev);
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if (!job->done_fence) {
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ivpu_warn_ratelimited(vdev, "Failed to create a fence\n");
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goto err_free_job;
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}
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job->file_priv = ivpu_file_priv_get(file_priv);
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ivpu_dbg(vdev, JOB, "Job created: ctx %2d engine %d", file_priv->ctx.id, job->engine_idx);
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return job;
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err_free_job:
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kfree(job);
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err_rpm_put:
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ivpu_rpm_put(vdev);
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return NULL;
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}
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static int ivpu_job_done(struct ivpu_device *vdev, u32 job_id, u32 job_status)
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{
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struct ivpu_job *job;
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job = xa_erase(&vdev->submitted_jobs_xa, job_id);
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if (!job)
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return -ENOENT;
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if (job->file_priv->has_mmu_faults)
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job_status = VPU_JSM_STATUS_ABORTED;
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job->bos[CMD_BUF_IDX]->job_status = job_status;
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dma_fence_signal(job->done_fence);
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ivpu_dbg(vdev, JOB, "Job complete: id %3u ctx %2d engine %d status 0x%x\n",
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job->job_id, job->file_priv->ctx.id, job->engine_idx, job_status);
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job_put(job);
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return 0;
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}
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static void ivpu_job_done_message(struct ivpu_device *vdev, void *msg)
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{
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struct vpu_ipc_msg_payload_job_done *payload;
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struct vpu_jsm_msg *job_ret_msg = msg;
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int ret;
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payload = (struct vpu_ipc_msg_payload_job_done *)&job_ret_msg->payload;
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ret = ivpu_job_done(vdev, payload->job_id, payload->job_status);
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if (ret)
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ivpu_err(vdev, "Failed to finish job %d: %d\n", payload->job_id, ret);
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}
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void ivpu_jobs_abort_all(struct ivpu_device *vdev)
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{
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struct ivpu_job *job;
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unsigned long id;
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xa_for_each(&vdev->submitted_jobs_xa, id, job)
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ivpu_job_done(vdev, id, VPU_JSM_STATUS_ABORTED);
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}
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static int ivpu_direct_job_submission(struct ivpu_job *job)
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{
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struct ivpu_file_priv *file_priv = job->file_priv;
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struct ivpu_device *vdev = job->vdev;
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struct xa_limit job_id_range;
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struct ivpu_cmdq *cmdq;
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int ret;
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mutex_lock(&file_priv->lock);
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cmdq = ivpu_cmdq_acquire(job->file_priv, job->engine_idx);
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if (!cmdq) {
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ivpu_warn(vdev, "Failed get job queue, ctx %d engine %d\n",
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file_priv->ctx.id, job->engine_idx);
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ret = -EINVAL;
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goto err_unlock;
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}
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job_id_range.min = FIELD_PREP(JOB_ID_CONTEXT_MASK, (file_priv->ctx.id - 1));
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job_id_range.max = job_id_range.min | JOB_ID_JOB_MASK;
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job_get(job, &job);
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ret = xa_alloc(&vdev->submitted_jobs_xa, &job->job_id, job, job_id_range, GFP_KERNEL);
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if (ret) {
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ivpu_warn_ratelimited(vdev, "Failed to allocate job id: %d\n", ret);
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goto err_job_put;
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}
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ret = ivpu_cmdq_push_job(cmdq, job);
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if (ret)
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goto err_xa_erase;
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ivpu_dbg(vdev, JOB, "Job submitted: id %3u addr 0x%llx ctx %2d engine %d next %d\n",
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job->job_id, job->cmd_buf_vpu_addr, file_priv->ctx.id,
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job->engine_idx, cmdq->jobq->header.tail);
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if (ivpu_test_mode == IVPU_TEST_MODE_NULL_HW) {
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ivpu_job_done(vdev, job->job_id, VPU_JSM_STATUS_SUCCESS);
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cmdq->jobq->header.head = cmdq->jobq->header.tail;
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wmb(); /* Flush WC buffer for jobq header */
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} else {
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ivpu_cmdq_ring_db(vdev, cmdq);
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}
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mutex_unlock(&file_priv->lock);
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return 0;
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err_xa_erase:
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xa_erase(&vdev->submitted_jobs_xa, job->job_id);
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err_job_put:
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job_put(job);
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err_unlock:
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mutex_unlock(&file_priv->lock);
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return ret;
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}
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static int
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ivpu_job_prepare_bos_for_submit(struct drm_file *file, struct ivpu_job *job, u32 *buf_handles,
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u32 buf_count, u32 commands_offset)
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{
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struct ivpu_file_priv *file_priv = file->driver_priv;
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struct ivpu_device *vdev = file_priv->vdev;
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struct ww_acquire_ctx acquire_ctx;
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enum dma_resv_usage usage;
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struct ivpu_bo *bo;
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int ret;
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u32 i;
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for (i = 0; i < buf_count; i++) {
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struct drm_gem_object *obj = drm_gem_object_lookup(file, buf_handles[i]);
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if (!obj)
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return -ENOENT;
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job->bos[i] = to_ivpu_bo(obj);
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ret = ivpu_bo_pin(job->bos[i]);
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if (ret)
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return ret;
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}
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bo = job->bos[CMD_BUF_IDX];
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if (!dma_resv_test_signaled(bo->base.resv, DMA_RESV_USAGE_READ)) {
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ivpu_warn(vdev, "Buffer is already in use\n");
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return -EBUSY;
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}
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if (commands_offset >= bo->base.size) {
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ivpu_warn(vdev, "Invalid command buffer offset %u\n", commands_offset);
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return -EINVAL;
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}
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job->cmd_buf_vpu_addr = bo->vpu_addr + commands_offset;
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ret = drm_gem_lock_reservations((struct drm_gem_object **)job->bos, buf_count,
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&acquire_ctx);
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if (ret) {
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ivpu_warn(vdev, "Failed to lock reservations: %d\n", ret);
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return ret;
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}
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for (i = 0; i < buf_count; i++) {
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ret = dma_resv_reserve_fences(job->bos[i]->base.resv, 1);
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if (ret) {
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ivpu_warn(vdev, "Failed to reserve fences: %d\n", ret);
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goto unlock_reservations;
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}
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}
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for (i = 0; i < buf_count; i++) {
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usage = (i == CMD_BUF_IDX) ? DMA_RESV_USAGE_WRITE : DMA_RESV_USAGE_BOOKKEEP;
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dma_resv_add_fence(job->bos[i]->base.resv, job->done_fence, usage);
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}
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unlock_reservations:
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drm_gem_unlock_reservations((struct drm_gem_object **)job->bos, buf_count, &acquire_ctx);
|
|
|
|
wmb(); /* Flush write combining buffers */
|
|
|
|
return ret;
|
|
}
|
|
|
|
int ivpu_submit_ioctl(struct drm_device *dev, void *data, struct drm_file *file)
|
|
{
|
|
struct ivpu_file_priv *file_priv = file->driver_priv;
|
|
struct ivpu_device *vdev = file_priv->vdev;
|
|
struct drm_ivpu_submit *params = data;
|
|
struct ivpu_job *job;
|
|
u32 *buf_handles;
|
|
int idx, ret;
|
|
|
|
if (params->engine > DRM_IVPU_ENGINE_COPY)
|
|
return -EINVAL;
|
|
|
|
if (params->buffer_count == 0 || params->buffer_count > JOB_MAX_BUFFER_COUNT)
|
|
return -EINVAL;
|
|
|
|
if (!IS_ALIGNED(params->commands_offset, 8))
|
|
return -EINVAL;
|
|
|
|
if (!file_priv->ctx.id)
|
|
return -EINVAL;
|
|
|
|
if (file_priv->has_mmu_faults)
|
|
return -EBADFD;
|
|
|
|
buf_handles = kcalloc(params->buffer_count, sizeof(u32), GFP_KERNEL);
|
|
if (!buf_handles)
|
|
return -ENOMEM;
|
|
|
|
ret = copy_from_user(buf_handles,
|
|
(void __user *)params->buffers_ptr,
|
|
params->buffer_count * sizeof(u32));
|
|
if (ret) {
|
|
ret = -EFAULT;
|
|
goto free_handles;
|
|
}
|
|
|
|
if (!drm_dev_enter(&vdev->drm, &idx)) {
|
|
ret = -ENODEV;
|
|
goto free_handles;
|
|
}
|
|
|
|
ivpu_dbg(vdev, JOB, "Submit ioctl: ctx %u buf_count %u\n",
|
|
file_priv->ctx.id, params->buffer_count);
|
|
|
|
job = ivpu_create_job(file_priv, params->engine, params->buffer_count);
|
|
if (!job) {
|
|
ivpu_err(vdev, "Failed to create job\n");
|
|
ret = -ENOMEM;
|
|
goto dev_exit;
|
|
}
|
|
|
|
ret = ivpu_job_prepare_bos_for_submit(file, job, buf_handles, params->buffer_count,
|
|
params->commands_offset);
|
|
if (ret) {
|
|
ivpu_err(vdev, "Failed to prepare job, ret %d\n", ret);
|
|
goto job_put;
|
|
}
|
|
|
|
ret = ivpu_direct_job_submission(job);
|
|
if (ret) {
|
|
dma_fence_signal(job->done_fence);
|
|
ivpu_err(vdev, "Failed to submit job to the HW, ret %d\n", ret);
|
|
}
|
|
|
|
job_put:
|
|
job_put(job);
|
|
dev_exit:
|
|
drm_dev_exit(idx);
|
|
free_handles:
|
|
kfree(buf_handles);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int ivpu_job_done_thread(void *arg)
|
|
{
|
|
struct ivpu_device *vdev = (struct ivpu_device *)arg;
|
|
struct ivpu_ipc_consumer cons;
|
|
struct vpu_jsm_msg jsm_msg;
|
|
bool jobs_submitted;
|
|
unsigned int timeout;
|
|
int ret;
|
|
|
|
ivpu_dbg(vdev, JOB, "Started %s\n", __func__);
|
|
|
|
ivpu_ipc_consumer_add(vdev, &cons, VPU_IPC_CHAN_JOB_RET);
|
|
|
|
while (!kthread_should_stop()) {
|
|
timeout = ivpu_tdr_timeout_ms ? ivpu_tdr_timeout_ms : vdev->timeout.tdr;
|
|
jobs_submitted = !xa_empty(&vdev->submitted_jobs_xa);
|
|
ret = ivpu_ipc_receive(vdev, &cons, NULL, &jsm_msg, timeout);
|
|
if (!ret) {
|
|
ivpu_job_done_message(vdev, &jsm_msg);
|
|
} else if (ret == -ETIMEDOUT) {
|
|
if (jobs_submitted && !xa_empty(&vdev->submitted_jobs_xa)) {
|
|
ivpu_err(vdev, "TDR detected, timeout %d ms", timeout);
|
|
ivpu_hw_diagnose_failure(vdev);
|
|
ivpu_pm_schedule_recovery(vdev);
|
|
}
|
|
}
|
|
}
|
|
|
|
ivpu_ipc_consumer_del(vdev, &cons);
|
|
|
|
ivpu_jobs_abort_all(vdev);
|
|
|
|
ivpu_dbg(vdev, JOB, "Stopped %s\n", __func__);
|
|
return 0;
|
|
}
|
|
|
|
int ivpu_job_done_thread_init(struct ivpu_device *vdev)
|
|
{
|
|
struct task_struct *thread;
|
|
|
|
thread = kthread_run(&ivpu_job_done_thread, (void *)vdev, "ivpu_job_done_thread");
|
|
if (IS_ERR(thread)) {
|
|
ivpu_err(vdev, "Failed to start job completion thread\n");
|
|
return -EIO;
|
|
}
|
|
|
|
get_task_struct(thread);
|
|
wake_up_process(thread);
|
|
|
|
vdev->job_done_thread = thread;
|
|
|
|
return 0;
|
|
}
|
|
|
|
void ivpu_job_done_thread_fini(struct ivpu_device *vdev)
|
|
{
|
|
kthread_stop(vdev->job_done_thread);
|
|
put_task_struct(vdev->job_done_thread);
|
|
}
|