diff options
Diffstat (limited to 'drivers/gpu/drm/imagination/pvr_queue.c')
| -rw-r--r-- | drivers/gpu/drm/imagination/pvr_queue.c | 1432 |
1 files changed, 1432 insertions, 0 deletions
diff --git a/drivers/gpu/drm/imagination/pvr_queue.c b/drivers/gpu/drm/imagination/pvr_queue.c new file mode 100644 index 000000000..5ed9c98fb --- /dev/null +++ b/drivers/gpu/drm/imagination/pvr_queue.c @@ -0,0 +1,1432 @@ +// SPDX-License-Identifier: GPL-2.0-only OR MIT +/* Copyright (c) 2023 Imagination Technologies Ltd. */ + +#include <drm/drm_managed.h> +#include <drm/gpu_scheduler.h> + +#include "pvr_cccb.h" +#include "pvr_context.h" +#include "pvr_device.h" +#include "pvr_drv.h" +#include "pvr_job.h" +#include "pvr_queue.h" +#include "pvr_vm.h" + +#include "pvr_rogue_fwif_client.h" + +#define MAX_DEADLINE_MS 30000 + +#define CTX_COMPUTE_CCCB_SIZE_LOG2 15 +#define CTX_FRAG_CCCB_SIZE_LOG2 15 +#define CTX_GEOM_CCCB_SIZE_LOG2 15 +#define CTX_TRANSFER_CCCB_SIZE_LOG2 15 + +static int get_xfer_ctx_state_size(struct pvr_device *pvr_dev) +{ + u32 num_isp_store_registers; + + if (PVR_HAS_FEATURE(pvr_dev, xe_memory_hierarchy)) { + num_isp_store_registers = 1; + } else { + int err; + + err = PVR_FEATURE_VALUE(pvr_dev, num_isp_ipp_pipes, &num_isp_store_registers); + if (WARN_ON(err)) + return err; + } + + return sizeof(struct rogue_fwif_frag_ctx_state) + + (num_isp_store_registers * + sizeof(((struct rogue_fwif_frag_ctx_state *)0)->frag_reg_isp_store[0])); +} + +static int get_frag_ctx_state_size(struct pvr_device *pvr_dev) +{ + u32 num_isp_store_registers; + int err; + + if (PVR_HAS_FEATURE(pvr_dev, xe_memory_hierarchy)) { + err = PVR_FEATURE_VALUE(pvr_dev, num_raster_pipes, &num_isp_store_registers); + if (WARN_ON(err)) + return err; + + if (PVR_HAS_FEATURE(pvr_dev, gpu_multicore_support)) { + u32 xpu_max_slaves; + + err = PVR_FEATURE_VALUE(pvr_dev, xpu_max_slaves, &xpu_max_slaves); + if (WARN_ON(err)) + return err; + + num_isp_store_registers *= (1 + xpu_max_slaves); + } + } else { + err = PVR_FEATURE_VALUE(pvr_dev, num_isp_ipp_pipes, &num_isp_store_registers); + if (WARN_ON(err)) + return err; + } + + return sizeof(struct rogue_fwif_frag_ctx_state) + + (num_isp_store_registers * + sizeof(((struct rogue_fwif_frag_ctx_state *)0)->frag_reg_isp_store[0])); +} + +static int get_ctx_state_size(struct pvr_device *pvr_dev, enum drm_pvr_job_type type) +{ + switch (type) { + case DRM_PVR_JOB_TYPE_GEOMETRY: + return sizeof(struct rogue_fwif_geom_ctx_state); + case DRM_PVR_JOB_TYPE_FRAGMENT: + return get_frag_ctx_state_size(pvr_dev); + case DRM_PVR_JOB_TYPE_COMPUTE: + return sizeof(struct rogue_fwif_compute_ctx_state); + case DRM_PVR_JOB_TYPE_TRANSFER_FRAG: + return get_xfer_ctx_state_size(pvr_dev); + } + + WARN(1, "Invalid queue type"); + return -EINVAL; +} + +static u32 get_ctx_offset(enum drm_pvr_job_type type) +{ + switch (type) { + case DRM_PVR_JOB_TYPE_GEOMETRY: + return offsetof(struct rogue_fwif_fwrendercontext, geom_context); + case DRM_PVR_JOB_TYPE_FRAGMENT: + return offsetof(struct rogue_fwif_fwrendercontext, frag_context); + case DRM_PVR_JOB_TYPE_COMPUTE: + return offsetof(struct rogue_fwif_fwcomputecontext, cdm_context); + case DRM_PVR_JOB_TYPE_TRANSFER_FRAG: + return offsetof(struct rogue_fwif_fwtransfercontext, tq_context); + } + + return 0; +} + +static const char * +pvr_queue_fence_get_driver_name(struct dma_fence *f) +{ + return PVR_DRIVER_NAME; +} + +static void pvr_queue_fence_release(struct dma_fence *f) +{ + struct pvr_queue_fence *fence = container_of(f, struct pvr_queue_fence, base); + + pvr_context_put(fence->queue->ctx); + dma_fence_free(f); +} + +static const char * +pvr_queue_job_fence_get_timeline_name(struct dma_fence *f) +{ + struct pvr_queue_fence *fence = container_of(f, struct pvr_queue_fence, base); + + switch (fence->queue->type) { + case DRM_PVR_JOB_TYPE_GEOMETRY: + return "geometry"; + + case DRM_PVR_JOB_TYPE_FRAGMENT: + return "fragment"; + + case DRM_PVR_JOB_TYPE_COMPUTE: + return "compute"; + + case DRM_PVR_JOB_TYPE_TRANSFER_FRAG: + return "transfer"; + } + + WARN(1, "Invalid queue type"); + return "invalid"; +} + +static const char * +pvr_queue_cccb_fence_get_timeline_name(struct dma_fence *f) +{ + struct pvr_queue_fence *fence = container_of(f, struct pvr_queue_fence, base); + + switch (fence->queue->type) { + case DRM_PVR_JOB_TYPE_GEOMETRY: + return "geometry-cccb"; + + case DRM_PVR_JOB_TYPE_FRAGMENT: + return "fragment-cccb"; + + case DRM_PVR_JOB_TYPE_COMPUTE: + return "compute-cccb"; + + case DRM_PVR_JOB_TYPE_TRANSFER_FRAG: + return "transfer-cccb"; + } + + WARN(1, "Invalid queue type"); + return "invalid"; +} + +static const struct dma_fence_ops pvr_queue_job_fence_ops = { + .get_driver_name = pvr_queue_fence_get_driver_name, + .get_timeline_name = pvr_queue_job_fence_get_timeline_name, + .release = pvr_queue_fence_release, +}; + +/** + * to_pvr_queue_job_fence() - Return a pvr_queue_fence object if the fence is + * backed by a UFO. + * @f: The dma_fence to turn into a pvr_queue_fence. + * + * Return: + * * A non-NULL pvr_queue_fence object if the dma_fence is backed by a UFO, or + * * NULL otherwise. + */ +static struct pvr_queue_fence * +to_pvr_queue_job_fence(struct dma_fence *f) +{ + struct drm_sched_fence *sched_fence = to_drm_sched_fence(f); + + if (sched_fence) + f = sched_fence->parent; + + if (f && f->ops == &pvr_queue_job_fence_ops) + return container_of(f, struct pvr_queue_fence, base); + + return NULL; +} + +static const struct dma_fence_ops pvr_queue_cccb_fence_ops = { + .get_driver_name = pvr_queue_fence_get_driver_name, + .get_timeline_name = pvr_queue_cccb_fence_get_timeline_name, + .release = pvr_queue_fence_release, +}; + +/** + * pvr_queue_fence_put() - Put wrapper for pvr_queue_fence objects. + * @f: The dma_fence object to put. + * + * If the pvr_queue_fence has been initialized, we call dma_fence_put(), + * otherwise we free the object with dma_fence_free(). This allows us + * to do the right thing before and after pvr_queue_fence_init() had been + * called. + */ +static void pvr_queue_fence_put(struct dma_fence *f) +{ + if (!f) + return; + + if (WARN_ON(f->ops && + f->ops != &pvr_queue_cccb_fence_ops && + f->ops != &pvr_queue_job_fence_ops)) + return; + + /* If the fence hasn't been initialized yet, free the object directly. */ + if (f->ops) + dma_fence_put(f); + else + dma_fence_free(f); +} + +/** + * pvr_queue_fence_alloc() - Allocate a pvr_queue_fence fence object + * + * Call this function to allocate job CCCB and done fences. This only + * allocates the objects. Initialization happens when the underlying + * dma_fence object is to be returned to drm_sched (in prepare_job() or + * run_job()). + * + * Return: + * * A valid pointer if the allocation succeeds, or + * * NULL if the allocation fails. + */ +static struct dma_fence * +pvr_queue_fence_alloc(void) +{ + struct pvr_queue_fence *fence; + + fence = kzalloc(sizeof(*fence), GFP_KERNEL); + if (!fence) + return NULL; + + return &fence->base; +} + +/** + * pvr_queue_fence_init() - Initializes a pvr_queue_fence object. + * @f: The fence to initialize + * @queue: The queue this fence belongs to. + * @fence_ops: The fence operations. + * @fence_ctx: The fence context. + * + * Wrapper around dma_fence_init() that takes care of initializing the + * pvr_queue_fence::queue field too. + */ +static void +pvr_queue_fence_init(struct dma_fence *f, + struct pvr_queue *queue, + const struct dma_fence_ops *fence_ops, + struct pvr_queue_fence_ctx *fence_ctx) +{ + struct pvr_queue_fence *fence = container_of(f, struct pvr_queue_fence, base); + + pvr_context_get(queue->ctx); + fence->queue = queue; + dma_fence_init(&fence->base, fence_ops, + &fence_ctx->lock, fence_ctx->id, + atomic_inc_return(&fence_ctx->seqno)); +} + +/** + * pvr_queue_cccb_fence_init() - Initializes a CCCB fence object. + * @fence: The fence to initialize. + * @queue: The queue this fence belongs to. + * + * Initializes a fence that can be used to wait for CCCB space. + * + * Should be called in the ::prepare_job() path, so the fence returned to + * drm_sched is valid. + */ +static void +pvr_queue_cccb_fence_init(struct dma_fence *fence, struct pvr_queue *queue) +{ + pvr_queue_fence_init(fence, queue, &pvr_queue_cccb_fence_ops, + &queue->cccb_fence_ctx.base); +} + +/** + * pvr_queue_job_fence_init() - Initializes a job done fence object. + * @fence: The fence to initialize. + * @queue: The queue this fence belongs to. + * + * Initializes a fence that will be signaled when the GPU is done executing + * a job. + * + * Should be called *before* the ::run_job() path, so the fence is initialised + * before being placed in the pending_list. + */ +static void +pvr_queue_job_fence_init(struct dma_fence *fence, struct pvr_queue *queue) +{ + pvr_queue_fence_init(fence, queue, &pvr_queue_job_fence_ops, + &queue->job_fence_ctx); +} + +/** + * pvr_queue_fence_ctx_init() - Queue fence context initialization. + * @fence_ctx: The context to initialize + */ +static void +pvr_queue_fence_ctx_init(struct pvr_queue_fence_ctx *fence_ctx) +{ + spin_lock_init(&fence_ctx->lock); + fence_ctx->id = dma_fence_context_alloc(1); + atomic_set(&fence_ctx->seqno, 0); +} + +static u32 ufo_cmds_size(u32 elem_count) +{ + /* We can pass at most ROGUE_FWIF_CCB_CMD_MAX_UFOS per UFO-related command. */ + u32 full_cmd_count = elem_count / ROGUE_FWIF_CCB_CMD_MAX_UFOS; + u32 remaining_elems = elem_count % ROGUE_FWIF_CCB_CMD_MAX_UFOS; + u32 size = full_cmd_count * + pvr_cccb_get_size_of_cmd_with_hdr(ROGUE_FWIF_CCB_CMD_MAX_UFOS * + sizeof(struct rogue_fwif_ufo)); + + if (remaining_elems) { + size += pvr_cccb_get_size_of_cmd_with_hdr(remaining_elems * + sizeof(struct rogue_fwif_ufo)); + } + + return size; +} + +static u32 job_cmds_size(struct pvr_job *job, u32 ufo_wait_count) +{ + /* One UFO cmd for the fence signaling, one UFO cmd per native fence native, + * and a command for the job itself. + */ + return ufo_cmds_size(1) + ufo_cmds_size(ufo_wait_count) + + pvr_cccb_get_size_of_cmd_with_hdr(job->cmd_len); +} + +/** + * job_count_remaining_native_deps() - Count the number of non-signaled native dependencies. + * @job: Job to operate on. + * + * Returns: Number of non-signaled native deps remaining. + */ +static unsigned long job_count_remaining_native_deps(struct pvr_job *job) +{ + unsigned long remaining_count = 0; + struct dma_fence *fence = NULL; + unsigned long index; + + xa_for_each(&job->base.dependencies, index, fence) { + struct pvr_queue_fence *jfence; + + jfence = to_pvr_queue_job_fence(fence); + if (!jfence) + continue; + + if (!dma_fence_is_signaled(&jfence->base)) + remaining_count++; + } + + return remaining_count; +} + +/** + * pvr_queue_get_job_cccb_fence() - Get the CCCB fence attached to a job. + * @queue: The queue this job will be submitted to. + * @job: The job to get the CCCB fence on. + * + * The CCCB fence is a synchronization primitive allowing us to delay job + * submission until there's enough space in the CCCB to submit the job. + * + * Return: + * * NULL if there's enough space in the CCCB to submit this job, or + * * A valid dma_fence object otherwise. + */ +static struct dma_fence * +pvr_queue_get_job_cccb_fence(struct pvr_queue *queue, struct pvr_job *job) +{ + struct pvr_queue_fence *cccb_fence; + unsigned int native_deps_remaining; + + /* If the fence is NULL, that means we already checked that we had + * enough space in the cccb for our job. + */ + if (!job->cccb_fence) + return NULL; + + mutex_lock(&queue->cccb_fence_ctx.job_lock); + + /* Count remaining native dependencies and check if the job fits in the CCCB. */ + native_deps_remaining = job_count_remaining_native_deps(job); + if (pvr_cccb_cmdseq_fits(&queue->cccb, job_cmds_size(job, native_deps_remaining))) { + pvr_queue_fence_put(job->cccb_fence); + job->cccb_fence = NULL; + goto out_unlock; + } + + /* There should be no job attached to the CCCB fence context: + * drm_sched_entity guarantees that jobs are submitted one at a time. + */ + if (WARN_ON(queue->cccb_fence_ctx.job)) + pvr_job_put(queue->cccb_fence_ctx.job); + + queue->cccb_fence_ctx.job = pvr_job_get(job); + + /* Initialize the fence before returning it. */ + cccb_fence = container_of(job->cccb_fence, struct pvr_queue_fence, base); + if (!WARN_ON(cccb_fence->queue)) + pvr_queue_cccb_fence_init(job->cccb_fence, queue); + +out_unlock: + mutex_unlock(&queue->cccb_fence_ctx.job_lock); + + return dma_fence_get(job->cccb_fence); +} + +/** + * pvr_queue_get_job_kccb_fence() - Get the KCCB fence attached to a job. + * @queue: The queue this job will be submitted to. + * @job: The job to get the KCCB fence on. + * + * The KCCB fence is a synchronization primitive allowing us to delay job + * submission until there's enough space in the KCCB to submit the job. + * + * Return: + * * NULL if there's enough space in the KCCB to submit this job, or + * * A valid dma_fence object otherwise. + */ +static struct dma_fence * +pvr_queue_get_job_kccb_fence(struct pvr_queue *queue, struct pvr_job *job) +{ + struct pvr_device *pvr_dev = queue->ctx->pvr_dev; + struct dma_fence *kccb_fence = NULL; + + /* If the fence is NULL, that means we already checked that we had + * enough space in the KCCB for our job. + */ + if (!job->kccb_fence) + return NULL; + + if (!WARN_ON(job->kccb_fence->ops)) { + kccb_fence = pvr_kccb_reserve_slot(pvr_dev, job->kccb_fence); + job->kccb_fence = NULL; + } + + return kccb_fence; +} + +static struct dma_fence * +pvr_queue_get_paired_frag_job_dep(struct pvr_queue *queue, struct pvr_job *job) +{ + struct pvr_job *frag_job = job->type == DRM_PVR_JOB_TYPE_GEOMETRY ? + job->paired_job : NULL; + struct dma_fence *f; + unsigned long index; + + if (!frag_job) + return NULL; + + xa_for_each(&frag_job->base.dependencies, index, f) { + /* Skip already signaled fences. */ + if (dma_fence_is_signaled(f)) + continue; + + /* Skip our own fence. */ + if (f == &job->base.s_fence->scheduled) + continue; + + return dma_fence_get(f); + } + + return frag_job->base.sched->ops->prepare_job(&frag_job->base, &queue->entity); +} + +/** + * pvr_queue_prepare_job() - Return the next internal dependencies expressed as a dma_fence. + * @sched_job: The job to query the next internal dependency on + * @s_entity: The entity this job is queue on. + * + * After iterating over drm_sched_job::dependencies, drm_sched let the driver return + * its own internal dependencies. We use this function to return our internal dependencies. + */ +static struct dma_fence * +pvr_queue_prepare_job(struct drm_sched_job *sched_job, + struct drm_sched_entity *s_entity) +{ + struct pvr_job *job = container_of(sched_job, struct pvr_job, base); + struct pvr_queue *queue = container_of(s_entity, struct pvr_queue, entity); + struct dma_fence *internal_dep = NULL; + + /* + * Initialize the done_fence, so we can signal it. This must be done + * here because otherwise by the time of run_job() the job will end up + * in the pending list without a valid fence. + */ + if (job->type == DRM_PVR_JOB_TYPE_FRAGMENT && job->paired_job) { + /* + * This will be called on a paired fragment job after being + * submitted to firmware. We can tell if this is the case and + * bail early from whether run_job() has been called on the + * geometry job, which would issue a pm ref. + */ + if (job->paired_job->has_pm_ref) + return NULL; + + /* + * In this case we need to use the job's own ctx to initialise + * the done_fence. The other steps are done in the ctx of the + * paired geometry job. + */ + pvr_queue_job_fence_init(job->done_fence, + job->ctx->queues.fragment); + } else { + pvr_queue_job_fence_init(job->done_fence, queue); + } + + /* CCCB fence is used to make sure we have enough space in the CCCB to + * submit our commands. + */ + internal_dep = pvr_queue_get_job_cccb_fence(queue, job); + + /* KCCB fence is used to make sure we have a KCCB slot to queue our + * CMD_KICK. + */ + if (!internal_dep) + internal_dep = pvr_queue_get_job_kccb_fence(queue, job); + + /* Any extra internal dependency should be added here, using the following + * pattern: + * + * if (!internal_dep) + * internal_dep = pvr_queue_get_job_xxxx_fence(queue, job); + */ + + /* The paired job fence should come last, when everything else is ready. */ + if (!internal_dep) + internal_dep = pvr_queue_get_paired_frag_job_dep(queue, job); + + return internal_dep; +} + +/** + * pvr_queue_update_active_state_locked() - Update the queue active state. + * @queue: Queue to update the state on. + * + * Locked version of pvr_queue_update_active_state(). Must be called with + * pvr_device::queue::lock held. + */ +static void pvr_queue_update_active_state_locked(struct pvr_queue *queue) +{ + struct pvr_device *pvr_dev = queue->ctx->pvr_dev; + + lockdep_assert_held(&pvr_dev->queues.lock); + + /* The queue is temporary out of any list when it's being reset, + * we don't want a call to pvr_queue_update_active_state_locked() + * to re-insert it behind our back. + */ + if (list_empty(&queue->node)) + return; + + if (!atomic_read(&queue->in_flight_job_count)) + list_move_tail(&queue->node, &pvr_dev->queues.idle); + else + list_move_tail(&queue->node, &pvr_dev->queues.active); +} + +/** + * pvr_queue_update_active_state() - Update the queue active state. + * @queue: Queue to update the state on. + * + * Active state is based on the in_flight_job_count value. + * + * Updating the active state implies moving the queue in or out of the + * active queue list, which also defines whether the queue is checked + * or not when a FW event is received. + * + * This function should be called any time a job is submitted or it done + * fence is signaled. + */ +static void pvr_queue_update_active_state(struct pvr_queue *queue) +{ + struct pvr_device *pvr_dev = queue->ctx->pvr_dev; + + mutex_lock(&pvr_dev->queues.lock); + pvr_queue_update_active_state_locked(queue); + mutex_unlock(&pvr_dev->queues.lock); +} + +static void pvr_queue_submit_job_to_cccb(struct pvr_job *job) +{ + struct pvr_queue *queue = container_of(job->base.sched, struct pvr_queue, scheduler); + struct rogue_fwif_ufo ufos[ROGUE_FWIF_CCB_CMD_MAX_UFOS]; + struct pvr_cccb *cccb = &queue->cccb; + struct pvr_queue_fence *jfence; + struct dma_fence *fence; + unsigned long index; + u32 ufo_count = 0; + + /* We need to add the queue to the active list before updating the CCCB, + * otherwise we might miss the FW event informing us that something + * happened on this queue. + */ + atomic_inc(&queue->in_flight_job_count); + pvr_queue_update_active_state(queue); + + xa_for_each(&job->base.dependencies, index, fence) { + jfence = to_pvr_queue_job_fence(fence); + if (!jfence) + continue; + + /* Skip the partial render fence, we will place it at the end. */ + if (job->type == DRM_PVR_JOB_TYPE_FRAGMENT && job->paired_job && + &job->paired_job->base.s_fence->scheduled == fence) + continue; + + if (dma_fence_is_signaled(&jfence->base)) + continue; + + pvr_fw_object_get_fw_addr(jfence->queue->timeline_ufo.fw_obj, + &ufos[ufo_count].addr); + ufos[ufo_count++].value = jfence->base.seqno; + + if (ufo_count == ARRAY_SIZE(ufos)) { + pvr_cccb_write_command_with_header(cccb, ROGUE_FWIF_CCB_CMD_TYPE_FENCE_PR, + sizeof(ufos), ufos, 0, 0); + ufo_count = 0; + } + } + + /* Partial render fence goes last. */ + if (job->type == DRM_PVR_JOB_TYPE_FRAGMENT && job->paired_job) { + jfence = to_pvr_queue_job_fence(job->paired_job->done_fence); + if (!WARN_ON(!jfence)) { + pvr_fw_object_get_fw_addr(jfence->queue->timeline_ufo.fw_obj, + &ufos[ufo_count].addr); + ufos[ufo_count++].value = job->paired_job->done_fence->seqno; + } + } + + if (ufo_count) { + pvr_cccb_write_command_with_header(cccb, ROGUE_FWIF_CCB_CMD_TYPE_FENCE_PR, + sizeof(ufos[0]) * ufo_count, ufos, 0, 0); + } + + if (job->type == DRM_PVR_JOB_TYPE_GEOMETRY && job->paired_job) { + struct rogue_fwif_cmd_geom *cmd = job->cmd; + + /* Reference value for the partial render test is the current queue fence + * seqno minus one. + */ + pvr_fw_object_get_fw_addr(queue->timeline_ufo.fw_obj, + &cmd->partial_render_geom_frag_fence.addr); + cmd->partial_render_geom_frag_fence.value = job->done_fence->seqno - 1; + } + + /* Submit job to FW */ + pvr_cccb_write_command_with_header(cccb, job->fw_ccb_cmd_type, job->cmd_len, job->cmd, + job->id, job->id); + + /* Signal the job fence. */ + pvr_fw_object_get_fw_addr(queue->timeline_ufo.fw_obj, &ufos[0].addr); + ufos[0].value = job->done_fence->seqno; + pvr_cccb_write_command_with_header(cccb, ROGUE_FWIF_CCB_CMD_TYPE_UPDATE, + sizeof(ufos[0]), ufos, 0, 0); +} + +/** + * pvr_queue_run_job() - Submit a job to the FW. + * @sched_job: The job to submit. + * + * This function is called when all non-native dependencies have been met and + * when the commands resulting from this job are guaranteed to fit in the CCCB. + */ +static struct dma_fence *pvr_queue_run_job(struct drm_sched_job *sched_job) +{ + struct pvr_job *job = container_of(sched_job, struct pvr_job, base); + struct pvr_device *pvr_dev = job->pvr_dev; + int err; + + /* The fragment job is issued along the geometry job when we use combined + * geom+frag kicks. When we get there, we should simply return the + * done_fence that's been initialized earlier. + */ + if (job->paired_job && job->type == DRM_PVR_JOB_TYPE_FRAGMENT && + job->done_fence->ops) { + return dma_fence_get(job->done_fence); + } + + /* The only kind of jobs that can be paired are geometry and fragment, and + * we bail out early if we see a fragment job that's paired with a geomtry + * job. + * Paired jobs must also target the same context and point to the same + * HWRT. + */ + if (WARN_ON(job->paired_job && + (job->type != DRM_PVR_JOB_TYPE_GEOMETRY || + job->paired_job->type != DRM_PVR_JOB_TYPE_FRAGMENT || + job->hwrt != job->paired_job->hwrt || + job->ctx != job->paired_job->ctx))) + return ERR_PTR(-EINVAL); + + err = pvr_job_get_pm_ref(job); + if (WARN_ON(err)) + return ERR_PTR(err); + + if (job->paired_job) { + err = pvr_job_get_pm_ref(job->paired_job); + if (WARN_ON(err)) + return ERR_PTR(err); + } + + /* Submit our job to the CCCB */ + pvr_queue_submit_job_to_cccb(job); + + if (job->paired_job) { + struct pvr_job *geom_job = job; + struct pvr_job *frag_job = job->paired_job; + struct pvr_queue *geom_queue = job->ctx->queues.geometry; + struct pvr_queue *frag_queue = job->ctx->queues.fragment; + + /* Submit the fragment job along the geometry job and send a combined kick. */ + pvr_queue_submit_job_to_cccb(frag_job); + pvr_cccb_send_kccb_combined_kick(pvr_dev, + &geom_queue->cccb, &frag_queue->cccb, + pvr_context_get_fw_addr(geom_job->ctx) + + geom_queue->ctx_offset, + pvr_context_get_fw_addr(frag_job->ctx) + + frag_queue->ctx_offset, + job->hwrt, + frag_job->fw_ccb_cmd_type == + ROGUE_FWIF_CCB_CMD_TYPE_FRAG_PR); + } else { + struct pvr_queue *queue = container_of(job->base.sched, + struct pvr_queue, scheduler); + + pvr_cccb_send_kccb_kick(pvr_dev, &queue->cccb, + pvr_context_get_fw_addr(job->ctx) + queue->ctx_offset, + job->hwrt); + } + + return dma_fence_get(job->done_fence); +} + +static void pvr_queue_stop(struct pvr_queue *queue, struct pvr_job *bad_job) +{ + drm_sched_stop(&queue->scheduler, bad_job ? &bad_job->base : NULL); +} + +static void pvr_queue_start(struct pvr_queue *queue) +{ + struct pvr_job *job; + + /* Make sure we CPU-signal the UFO object, so other queues don't get + * blocked waiting on it. + */ + *queue->timeline_ufo.value = atomic_read(&queue->job_fence_ctx.seqno); + + list_for_each_entry(job, &queue->scheduler.pending_list, base.list) { + if (dma_fence_is_signaled(job->done_fence)) { + /* Jobs might have completed after drm_sched_stop() was called. + * In that case, re-assign the parent field to the done_fence. + */ + WARN_ON(job->base.s_fence->parent); + job->base.s_fence->parent = dma_fence_get(job->done_fence); + } else { + /* If we had unfinished jobs, flag the entity as guilty so no + * new job can be submitted. + */ + atomic_set(&queue->ctx->faulty, 1); + } + } + + drm_sched_start(&queue->scheduler, true); +} + +/** + * pvr_queue_timedout_job() - Handle a job timeout event. + * @s_job: The job this timeout occurred on. + * + * FIXME: We don't do anything here to unblock the situation, we just stop+start + * the scheduler, and re-assign parent fences in the middle. + * + * Return: + * * DRM_GPU_SCHED_STAT_NOMINAL. + */ +static enum drm_gpu_sched_stat +pvr_queue_timedout_job(struct drm_sched_job *s_job) +{ + struct drm_gpu_scheduler *sched = s_job->sched; + struct pvr_queue *queue = container_of(sched, struct pvr_queue, scheduler); + struct pvr_device *pvr_dev = queue->ctx->pvr_dev; + struct pvr_job *job; + u32 job_count = 0; + + dev_err(sched->dev, "Job timeout\n"); + + /* Before we stop the scheduler, make sure the queue is out of any list, so + * any call to pvr_queue_update_active_state_locked() that might happen + * until the scheduler is really stopped doesn't end up re-inserting the + * queue in the active list. This would cause + * pvr_queue_signal_done_fences() and drm_sched_stop() to race with each + * other when accessing the pending_list, since drm_sched_stop() doesn't + * grab the job_list_lock when modifying the list (it's assuming the + * only other accessor is the scheduler, and it's safe to not grab the + * lock since it's stopped). + */ + mutex_lock(&pvr_dev->queues.lock); + list_del_init(&queue->node); + mutex_unlock(&pvr_dev->queues.lock); + + drm_sched_stop(sched, s_job); + + /* Re-assign job parent fences. */ + list_for_each_entry(job, &sched->pending_list, base.list) { + job->base.s_fence->parent = dma_fence_get(job->done_fence); + job_count++; + } + WARN_ON(atomic_read(&queue->in_flight_job_count) != job_count); + + /* Re-insert the queue in the proper list, and kick a queue processing + * operation if there were jobs pending. + */ + mutex_lock(&pvr_dev->queues.lock); + if (!job_count) { + list_move_tail(&queue->node, &pvr_dev->queues.idle); + } else { + atomic_set(&queue->in_flight_job_count, job_count); + list_move_tail(&queue->node, &pvr_dev->queues.active); + pvr_queue_process(queue); + } + mutex_unlock(&pvr_dev->queues.lock); + + drm_sched_start(sched, true); + + return DRM_GPU_SCHED_STAT_NOMINAL; +} + +/** + * pvr_queue_free_job() - Release the reference the scheduler had on a job object. + * @sched_job: Job object to free. + */ +static void pvr_queue_free_job(struct drm_sched_job *sched_job) +{ + struct pvr_job *job = container_of(sched_job, struct pvr_job, base); + + drm_sched_job_cleanup(sched_job); + job->paired_job = NULL; + pvr_job_put(job); +} + +static const struct drm_sched_backend_ops pvr_queue_sched_ops = { + .prepare_job = pvr_queue_prepare_job, + .run_job = pvr_queue_run_job, + .timedout_job = pvr_queue_timedout_job, + .free_job = pvr_queue_free_job, +}; + +/** + * pvr_queue_fence_is_ufo_backed() - Check if a dma_fence is backed by a UFO object + * @f: Fence to test. + * + * A UFO-backed fence is a fence that can be signaled or waited upon FW-side. + * pvr_job::done_fence objects are backed by the timeline UFO attached to the queue + * they are pushed to, but those fences are not directly exposed to the outside + * world, so we also need to check if the fence we're being passed is a + * drm_sched_fence that was coming from our driver. + */ +bool pvr_queue_fence_is_ufo_backed(struct dma_fence *f) +{ + struct drm_sched_fence *sched_fence = f ? to_drm_sched_fence(f) : NULL; + + if (sched_fence && + sched_fence->sched->ops == &pvr_queue_sched_ops) + return true; + + if (f && f->ops == &pvr_queue_job_fence_ops) + return true; + + return false; +} + +/** + * pvr_queue_signal_done_fences() - Signal done fences. + * @queue: Queue to check. + * + * Signal done fences of jobs whose seqno is less than the current value of + * the UFO object attached to the queue. + */ +static void +pvr_queue_signal_done_fences(struct pvr_queue *queue) +{ + struct pvr_job *job, *tmp_job; + u32 cur_seqno; + + spin_lock(&queue->scheduler.job_list_lock); + cur_seqno = *queue->timeline_ufo.value; + list_for_each_entry_safe(job, tmp_job, &queue->scheduler.pending_list, base.list) { + if ((int)(cur_seqno - lower_32_bits(job->done_fence->seqno)) < 0) + break; + + if (!dma_fence_is_signaled(job->done_fence)) { + dma_fence_signal(job->done_fence); + pvr_job_release_pm_ref(job); + atomic_dec(&queue->in_flight_job_count); + } + } + spin_unlock(&queue->scheduler.job_list_lock); +} + +/** + * pvr_queue_check_job_waiting_for_cccb_space() - Check if the job waiting for CCCB space + * can be unblocked + * pushed to the CCCB + * @queue: Queue to check + * + * If we have a job waiting for CCCB, and this job now fits in the CCCB, we signal + * its CCCB fence, which should kick drm_sched. + */ +static void +pvr_queue_check_job_waiting_for_cccb_space(struct pvr_queue *queue) +{ + struct pvr_queue_fence *cccb_fence; + u32 native_deps_remaining; + struct pvr_job *job; + + mutex_lock(&queue->cccb_fence_ctx.job_lock); + job = queue->cccb_fence_ctx.job; + if (!job) + goto out_unlock; + + /* If we have a job attached to the CCCB fence context, its CCCB fence + * shouldn't be NULL. + */ + if (WARN_ON(!job->cccb_fence)) { + job = NULL; + goto out_unlock; + } + + /* If we get there, CCCB fence has to be initialized. */ + cccb_fence = container_of(job->cccb_fence, struct pvr_queue_fence, base); + if (WARN_ON(!cccb_fence->queue)) { + job = NULL; + goto out_unlock; + } + + /* Evict signaled dependencies before checking for CCCB space. + * If the job fits, signal the CCCB fence, this should unblock + * the drm_sched_entity. + */ + native_deps_remaining = job_count_remaining_native_deps(job); + if (!pvr_cccb_cmdseq_fits(&queue->cccb, job_cmds_size(job, native_deps_remaining))) { + job = NULL; + goto out_unlock; + } + + dma_fence_signal(job->cccb_fence); + pvr_queue_fence_put(job->cccb_fence); + job->cccb_fence = NULL; + queue->cccb_fence_ctx.job = NULL; + +out_unlock: + mutex_unlock(&queue->cccb_fence_ctx.job_lock); + + pvr_job_put(job); +} + +/** + * pvr_queue_process() - Process events that happened on a queue. + * @queue: Queue to check + * + * Signal job fences and check if jobs waiting for CCCB space can be unblocked. + */ +void pvr_queue_process(struct pvr_queue *queue) +{ + lockdep_assert_held(&queue->ctx->pvr_dev->queues.lock); + + pvr_queue_check_job_waiting_for_cccb_space(queue); + pvr_queue_signal_done_fences(queue); + pvr_queue_update_active_state_locked(queue); +} + +static u32 get_dm_type(struct pvr_queue *queue) +{ + switch (queue->type) { + case DRM_PVR_JOB_TYPE_GEOMETRY: + return PVR_FWIF_DM_GEOM; + case DRM_PVR_JOB_TYPE_TRANSFER_FRAG: + case DRM_PVR_JOB_TYPE_FRAGMENT: + return PVR_FWIF_DM_FRAG; + case DRM_PVR_JOB_TYPE_COMPUTE: + return PVR_FWIF_DM_CDM; + } + + return ~0; +} + +/** + * init_fw_context() - Initializes the queue part of a FW context. + * @queue: Queue object to initialize the FW context for. + * @fw_ctx_map: The FW context CPU mapping. + * + * FW contexts are containing various states, one of them being a per-queue state + * that needs to be initialized for each queue being exposed by a context. This + * function takes care of that. + */ +static void init_fw_context(struct pvr_queue *queue, void *fw_ctx_map) +{ + struct pvr_context *ctx = queue->ctx; + struct pvr_fw_object *fw_mem_ctx_obj = pvr_vm_get_fw_mem_context(ctx->vm_ctx); + struct rogue_fwif_fwcommoncontext *cctx_fw; + struct pvr_cccb *cccb = &queue->cccb; + + cctx_fw = fw_ctx_map + queue->ctx_offset; + cctx_fw->ccbctl_fw_addr = cccb->ctrl_fw_addr; + cctx_fw->ccb_fw_addr = cccb->cccb_fw_addr; + + cctx_fw->dm = get_dm_type(queue); + cctx_fw->priority = ctx->priority; + cctx_fw->priority_seq_num = 0; + cctx_fw->max_deadline_ms = MAX_DEADLINE_MS; + cctx_fw->pid = task_tgid_nr(current); + cctx_fw->server_common_context_id = ctx->ctx_id; + + pvr_fw_object_get_fw_addr(fw_mem_ctx_obj, &cctx_fw->fw_mem_context_fw_addr); + + pvr_fw_object_get_fw_addr(queue->reg_state_obj, &cctx_fw->context_state_addr); +} + +/** + * pvr_queue_cleanup_fw_context() - Wait for the FW context to be idle and clean it up. + * @queue: Queue on FW context to clean up. + * + * Return: + * * 0 on success, + * * Any error returned by pvr_fw_structure_cleanup() otherwise. + */ +static int pvr_queue_cleanup_fw_context(struct pvr_queue *queue) +{ + if (!queue->ctx->fw_obj) + return 0; + + return pvr_fw_structure_cleanup(queue->ctx->pvr_dev, + ROGUE_FWIF_CLEANUP_FWCOMMONCONTEXT, + queue->ctx->fw_obj, queue->ctx_offset); +} + +/** + * pvr_queue_job_init() - Initialize queue related fields in a pvr_job object. + * @job: The job to initialize. + * + * Bind the job to a queue and allocate memory to guarantee pvr_queue_job_arm() + * and pvr_queue_job_push() can't fail. We also make sure the context type is + * valid and the job can fit in the CCCB. + * + * Return: + * * 0 on success, or + * * An error code if something failed. + */ +int pvr_queue_job_init(struct pvr_job *job) +{ + /* Fragment jobs need at least one native fence wait on the geometry job fence. */ + u32 min_native_dep_count = job->type == DRM_PVR_JOB_TYPE_FRAGMENT ? 1 : 0; + struct pvr_queue *queue; + int err; + + if (atomic_read(&job->ctx->faulty)) + return -EIO; + + queue = pvr_context_get_queue_for_job(job->ctx, job->type); + if (!queue) + return -EINVAL; + + if (!pvr_cccb_cmdseq_can_fit(&queue->cccb, job_cmds_size(job, min_native_dep_count))) + return -E2BIG; + + err = drm_sched_job_init(&job->base, &queue->entity, 1, THIS_MODULE); + if (err) + return err; + + job->cccb_fence = pvr_queue_fence_alloc(); + job->kccb_fence = pvr_kccb_fence_alloc(); + job->done_fence = pvr_queue_fence_alloc(); + if (!job->cccb_fence || !job->kccb_fence || !job->done_fence) + return -ENOMEM; + + return 0; +} + +/** + * pvr_queue_job_arm() - Arm a job object. + * @job: The job to arm. + * + * Initializes fences and return the drm_sched finished fence so it can + * be exposed to the outside world. Once this function is called, you should + * make sure the job is pushed using pvr_queue_job_push(), or guarantee that + * no one grabbed a reference to the returned fence. The latter can happen if + * we do multi-job submission, and something failed when creating/initializing + * a job. In that case, we know the fence didn't leave the driver, and we + * can thus guarantee nobody will wait on an dead fence object. + * + * Return: + * * A dma_fence object. + */ +struct dma_fence *pvr_queue_job_arm(struct pvr_job *job) +{ + drm_sched_job_arm(&job->base); + + return &job->base.s_fence->finished; +} + +/** + * pvr_queue_job_cleanup() - Cleanup fence/scheduler related fields in the job object. + * @job: The job to cleanup. + * + * Should be called in the job release path. + */ +void pvr_queue_job_cleanup(struct pvr_job *job) +{ + pvr_queue_fence_put(job->done_fence); + pvr_queue_fence_put(job->cccb_fence); + pvr_kccb_fence_put(job->kccb_fence); + + if (job->base.s_fence) + drm_sched_job_cleanup(&job->base); +} + +/** + * pvr_queue_job_push() - Push a job to its queue. + * @job: The job to push. + * + * Must be called after pvr_queue_job_init() and after all dependencies + * have been added to the job. This will effectively queue the job to + * the drm_sched_entity attached to the queue. We grab a reference on + * the job object, so the caller is free to drop its reference when it's + * done accessing the job object. + */ +void pvr_queue_job_push(struct pvr_job *job) +{ + struct pvr_queue *queue = container_of(job->base.sched, struct pvr_queue, scheduler); + + /* Keep track of the last queued job scheduled fence for combined submit. */ + dma_fence_put(queue->last_queued_job_scheduled_fence); + queue->last_queued_job_scheduled_fence = dma_fence_get(&job->base.s_fence->scheduled); + + pvr_job_get(job); + drm_sched_entity_push_job(&job->base); +} + +static void reg_state_init(void *cpu_ptr, void *priv) +{ + struct pvr_queue *queue = priv; + + if (queue->type == DRM_PVR_JOB_TYPE_GEOMETRY) { + struct rogue_fwif_geom_ctx_state *geom_ctx_state_fw = cpu_ptr; + + geom_ctx_state_fw->geom_core[0].geom_reg_vdm_call_stack_pointer_init = + queue->callstack_addr; + } +} + +/** + * pvr_queue_create() - Create a queue object. + * @ctx: The context this queue will be attached to. + * @type: The type of jobs being pushed to this queue. + * @args: The arguments passed to the context creation function. + * @fw_ctx_map: CPU mapping of the FW context object. + * + * Create a queue object that will be used to queue and track jobs. + * + * Return: + * * A valid pointer to a pvr_queue object, or + * * An error pointer if the creation/initialization failed. + */ +struct pvr_queue *pvr_queue_create(struct pvr_context *ctx, + enum drm_pvr_job_type type, + struct drm_pvr_ioctl_create_context_args *args, + void *fw_ctx_map) +{ + static const struct { + u32 cccb_size; + const char *name; + } props[] = { + [DRM_PVR_JOB_TYPE_GEOMETRY] = { + .cccb_size = CTX_GEOM_CCCB_SIZE_LOG2, + .name = "geometry", + }, + [DRM_PVR_JOB_TYPE_FRAGMENT] = { + .cccb_size = CTX_FRAG_CCCB_SIZE_LOG2, + .name = "fragment" + }, + [DRM_PVR_JOB_TYPE_COMPUTE] = { + .cccb_size = CTX_COMPUTE_CCCB_SIZE_LOG2, + .name = "compute" + }, + [DRM_PVR_JOB_TYPE_TRANSFER_FRAG] = { + .cccb_size = CTX_TRANSFER_CCCB_SIZE_LOG2, + .name = "transfer_frag" + }, + }; + struct pvr_device *pvr_dev = ctx->pvr_dev; + struct drm_gpu_scheduler *sched; + struct pvr_queue *queue; + int ctx_state_size, err; + void *cpu_map; + + if (WARN_ON(type >= sizeof(props))) + return ERR_PTR(-EINVAL); + + switch (ctx->type) { + case DRM_PVR_CTX_TYPE_RENDER: + if (type != DRM_PVR_JOB_TYPE_GEOMETRY && + type != DRM_PVR_JOB_TYPE_FRAGMENT) + return ERR_PTR(-EINVAL); + break; + case DRM_PVR_CTX_TYPE_COMPUTE: + if (type != DRM_PVR_JOB_TYPE_COMPUTE) + return ERR_PTR(-EINVAL); + break; + case DRM_PVR_CTX_TYPE_TRANSFER_FRAG: + if (type != DRM_PVR_JOB_TYPE_TRANSFER_FRAG) + return ERR_PTR(-EINVAL); + break; + default: + return ERR_PTR(-EINVAL); + } + + ctx_state_size = get_ctx_state_size(pvr_dev, type); + if (ctx_state_size < 0) + return ERR_PTR(ctx_state_size); + + queue = kzalloc(sizeof(*queue), GFP_KERNEL); + if (!queue) + return ERR_PTR(-ENOMEM); + + queue->type = type; + queue->ctx_offset = get_ctx_offset(type); + queue->ctx = ctx; + queue->callstack_addr = args->callstack_addr; + sched = &queue->scheduler; + INIT_LIST_HEAD(&queue->node); + mutex_init(&queue->cccb_fence_ctx.job_lock); + pvr_queue_fence_ctx_init(&queue->cccb_fence_ctx.base); + pvr_queue_fence_ctx_init(&queue->job_fence_ctx); + + err = pvr_cccb_init(pvr_dev, &queue->cccb, props[type].cccb_size, props[type].name); + if (err) + goto err_free_queue; + + err = pvr_fw_object_create(pvr_dev, ctx_state_size, + PVR_BO_FW_FLAGS_DEVICE_UNCACHED, + reg_state_init, queue, &queue->reg_state_obj); + if (err) + goto err_cccb_fini; + + init_fw_context(queue, fw_ctx_map); + + if (type != DRM_PVR_JOB_TYPE_GEOMETRY && type != DRM_PVR_JOB_TYPE_FRAGMENT && + args->callstack_addr) { + err = -EINVAL; + goto err_release_reg_state; + } + + cpu_map = pvr_fw_object_create_and_map(pvr_dev, sizeof(*queue->timeline_ufo.value), + PVR_BO_FW_FLAGS_DEVICE_UNCACHED, + NULL, NULL, &queue->timeline_ufo.fw_obj); + if (IS_ERR(cpu_map)) { + err = PTR_ERR(cpu_map); + goto err_release_reg_state; + } + + queue->timeline_ufo.value = cpu_map; + + err = drm_sched_init(&queue->scheduler, + &pvr_queue_sched_ops, + pvr_dev->sched_wq, 1, 64 * 1024, 1, + msecs_to_jiffies(500), + pvr_dev->sched_wq, NULL, "pvr-queue", + pvr_dev->base.dev); + if (err) + goto err_release_ufo; + + err = drm_sched_entity_init(&queue->entity, + DRM_SCHED_PRIORITY_KERNEL, + &sched, 1, &ctx->faulty); + if (err) + goto err_sched_fini; + + mutex_lock(&pvr_dev->queues.lock); + list_add_tail(&queue->node, &pvr_dev->queues.idle); + mutex_unlock(&pvr_dev->queues.lock); + + return queue; + +err_sched_fini: + drm_sched_fini(&queue->scheduler); + +err_release_ufo: + pvr_fw_object_unmap_and_destroy(queue->timeline_ufo.fw_obj); + +err_release_reg_state: + pvr_fw_object_destroy(queue->reg_state_obj); + +err_cccb_fini: + pvr_cccb_fini(&queue->cccb); + +err_free_queue: + mutex_destroy(&queue->cccb_fence_ctx.job_lock); + kfree(queue); + + return ERR_PTR(err); +} + +void pvr_queue_device_pre_reset(struct pvr_device *pvr_dev) +{ + struct pvr_queue *queue; + + mutex_lock(&pvr_dev->queues.lock); + list_for_each_entry(queue, &pvr_dev->queues.idle, node) + pvr_queue_stop(queue, NULL); + list_for_each_entry(queue, &pvr_dev->queues.active, node) + pvr_queue_stop(queue, NULL); + mutex_unlock(&pvr_dev->queues.lock); +} + +void pvr_queue_device_post_reset(struct pvr_device *pvr_dev) +{ + struct pvr_queue *queue; + + mutex_lock(&pvr_dev->queues.lock); + list_for_each_entry(queue, &pvr_dev->queues.active, node) + pvr_queue_start(queue); + list_for_each_entry(queue, &pvr_dev->queues.idle, node) + pvr_queue_start(queue); + mutex_unlock(&pvr_dev->queues.lock); +} + +/** + * pvr_queue_kill() - Kill a queue. + * @queue: The queue to kill. + * + * Kill the queue so no new jobs can be pushed. Should be called when the + * context handle is destroyed. The queue object might last longer if jobs + * are still in flight and holding a reference to the context this queue + * belongs to. + */ +void pvr_queue_kill(struct pvr_queue *queue) +{ + drm_sched_entity_destroy(&queue->entity); + dma_fence_put(queue->last_queued_job_scheduled_fence); + queue->last_queued_job_scheduled_fence = NULL; +} + +/** + * pvr_queue_destroy() - Destroy a queue. + * @queue: The queue to destroy. + * + * Cleanup the queue and free the resources attached to it. Should be + * called from the context release function. + */ +void pvr_queue_destroy(struct pvr_queue *queue) +{ + if (!queue) + return; + + mutex_lock(&queue->ctx->pvr_dev->queues.lock); + list_del_init(&queue->node); + mutex_unlock(&queue->ctx->pvr_dev->queues.lock); + + drm_sched_fini(&queue->scheduler); + drm_sched_entity_fini(&queue->entity); + + if (WARN_ON(queue->last_queued_job_scheduled_fence)) + dma_fence_put(queue->last_queued_job_scheduled_fence); + + pvr_queue_cleanup_fw_context(queue); + + pvr_fw_object_unmap_and_destroy(queue->timeline_ufo.fw_obj); + pvr_fw_object_destroy(queue->reg_state_obj); + pvr_cccb_fini(&queue->cccb); + mutex_destroy(&queue->cccb_fence_ctx.job_lock); + kfree(queue); +} + +/** + * pvr_queue_device_init() - Device-level initialization of queue related fields. + * @pvr_dev: The device to initialize. + * + * Initializes all fields related to queue management in pvr_device. + * + * Return: + * * 0 on success, or + * * An error code on failure. + */ +int pvr_queue_device_init(struct pvr_device *pvr_dev) +{ + int err; + + INIT_LIST_HEAD(&pvr_dev->queues.active); + INIT_LIST_HEAD(&pvr_dev->queues.idle); + err = drmm_mutex_init(from_pvr_device(pvr_dev), &pvr_dev->queues.lock); + if (err) + return err; + + pvr_dev->sched_wq = alloc_workqueue("powervr-sched", WQ_UNBOUND, 0); + if (!pvr_dev->sched_wq) + return -ENOMEM; + + return 0; +} + +/** + * pvr_queue_device_fini() - Device-level cleanup of queue related fields. + * @pvr_dev: The device to cleanup. + * + * Cleanup/free all queue-related resources attached to a pvr_device object. + */ +void pvr_queue_device_fini(struct pvr_device *pvr_dev) +{ + destroy_workqueue(pvr_dev->sched_wq); +} |