[mirror_ubuntu-focal-kernel.git] / drivers / gpu / drm / etnaviv / etnaviv_gem_submit.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (C) 2015 Etnaviv Project
 */

#include <linux/dma-fence-array.h>
#include <linux/reservation.h>
#include <linux/sync_file.h>
#include "etnaviv_cmdbuf.h"
#include "etnaviv_drv.h"
#include "etnaviv_gpu.h"
#include "etnaviv_gem.h"
#include "etnaviv_perfmon.h"
#include "etnaviv_sched.h"

/*
 * Cmdstream submission:
 */

#define BO_INVALID_FLAGS ~(ETNA_SUBMIT_BO_READ | ETNA_SUBMIT_BO_WRITE)
/* make sure these don't conflict w/ ETNAVIV_SUBMIT_BO_x */
#define BO_LOCKED   0x4000
#define BO_PINNED   0x2000

static struct etnaviv_gem_submit *submit_create(struct drm_device *dev,
		struct etnaviv_gpu *gpu, size_t nr_bos, size_t nr_pmrs)
{
	struct etnaviv_gem_submit *submit;
	size_t sz = size_vstruct(nr_bos, sizeof(submit->bos[0]), sizeof(*submit));

	submit = kzalloc(sz, GFP_KERNEL);
	if (!submit)
		return NULL;

	submit->pmrs = kcalloc(nr_pmrs, sizeof(struct etnaviv_perfmon_request),
			       GFP_KERNEL);
	if (!submit->pmrs) {
		kfree(submit);
		return NULL;
	}
	submit->nr_pmrs = nr_pmrs;

	submit->gpu = gpu;
	kref_init(&submit->refcount);

	return submit;
}

static int submit_lookup_objects(struct etnaviv_gem_submit *submit,
	struct drm_file *file, struct drm_etnaviv_gem_submit_bo *submit_bos,
	unsigned nr_bos)
{
	struct drm_etnaviv_gem_submit_bo *bo;
	unsigned i;
	int ret = 0;

	spin_lock(&file->table_lock);

	for (i = 0, bo = submit_bos; i < nr_bos; i++, bo++) {
		struct drm_gem_object *obj;

		if (bo->flags & BO_INVALID_FLAGS) {
			DRM_ERROR("invalid flags: %x\n", bo->flags);
			ret = -EINVAL;
			goto out_unlock;
		}

		submit->bos[i].flags = bo->flags;

		/* normally use drm_gem_object_lookup(), but for bulk lookup
		 * all under single table_lock just hit object_idr directly:
		 */
		obj = idr_find(&file->object_idr, bo->handle);
		if (!obj) {
			DRM_ERROR("invalid handle %u at index %u\n",
				  bo->handle, i);
			ret = -EINVAL;
			goto out_unlock;
		}

		/*
		 * Take a refcount on the object. The file table lock
		 * prevents the object_idr's refcount on this being dropped.
		 */
		drm_gem_object_get(obj);

		submit->bos[i].obj = to_etnaviv_bo(obj);
	}

out_unlock:
	submit->nr_bos = i;
	spin_unlock(&file->table_lock);

	return ret;
}

static void submit_unlock_object(struct etnaviv_gem_submit *submit, int i)
{
	if (submit->bos[i].flags & BO_LOCKED) {
		struct drm_gem_object *obj = &submit->bos[i].obj->base;

		ww_mutex_unlock(&obj->resv->lock);
		submit->bos[i].flags &= ~BO_LOCKED;
	}
}

static int submit_lock_objects(struct etnaviv_gem_submit *submit,
		struct ww_acquire_ctx *ticket)
{
	int contended, slow_locked = -1, i, ret = 0;

retry:
	for (i = 0; i < submit->nr_bos; i++) {
		struct drm_gem_object *obj = &submit->bos[i].obj->base;

		if (slow_locked == i)
			slow_locked = -1;

		contended = i;

		if (!(submit->bos[i].flags & BO_LOCKED)) {
			ret = ww_mutex_lock_interruptible(&obj->resv->lock,
							  ticket);
			if (ret == -EALREADY)
				DRM_ERROR("BO at index %u already on submit list\n",
					  i);
			if (ret)
				goto fail;
			submit->bos[i].flags |= BO_LOCKED;
		}
	}

	ww_acquire_done(ticket);

	return 0;

fail:
	for (; i >= 0; i--)
		submit_unlock_object(submit, i);

	if (slow_locked > 0)
		submit_unlock_object(submit, slow_locked);

	if (ret == -EDEADLK) {
		struct drm_gem_object *obj;

		obj = &submit->bos[contended].obj->base;

		/* we lost out in a seqno race, lock and retry.. */
		ret = ww_mutex_lock_slow_interruptible(&obj->resv->lock,
						       ticket);
		if (!ret) {
			submit->bos[contended].flags |= BO_LOCKED;
			slow_locked = contended;
			goto retry;
		}
	}

	return ret;
}

static int submit_fence_sync(struct etnaviv_gem_submit *submit)
{
	int i, ret = 0;

	for (i = 0; i < submit->nr_bos; i++) {
		struct etnaviv_gem_submit_bo *bo = &submit->bos[i];
		struct reservation_object *robj = bo->obj->base.resv;

		if (!(bo->flags & ETNA_SUBMIT_BO_WRITE)) {
			ret = reservation_object_reserve_shared(robj, 1);
			if (ret)
				return ret;
		}

		if (submit->flags & ETNA_SUBMIT_NO_IMPLICIT)
			continue;

		if (bo->flags & ETNA_SUBMIT_BO_WRITE) {
			ret = reservation_object_get_fences_rcu(robj, &bo->excl,
								&bo->nr_shared,
								&bo->shared);
			if (ret)
				return ret;
		} else {
			bo->excl = reservation_object_get_excl_rcu(robj);
		}

	}

	return ret;
}

static void submit_attach_object_fences(struct etnaviv_gem_submit *submit)
{
	int i;

	for (i = 0; i < submit->nr_bos; i++) {
		struct drm_gem_object *obj = &submit->bos[i].obj->base;

		if (submit->bos[i].flags & ETNA_SUBMIT_BO_WRITE)
			reservation_object_add_excl_fence(obj->resv,
							  submit->out_fence);
		else
			reservation_object_add_shared_fence(obj->resv,
							    submit->out_fence);

		submit_unlock_object(submit, i);
	}
}

static int submit_pin_objects(struct etnaviv_gem_submit *submit)
{
	int i, ret = 0;

	for (i = 0; i < submit->nr_bos; i++) {
		struct etnaviv_gem_object *etnaviv_obj = submit->bos[i].obj;
		struct etnaviv_vram_mapping *mapping;

		mapping = etnaviv_gem_mapping_get(&etnaviv_obj->base,
						  submit->gpu);
		if (IS_ERR(mapping)) {
			ret = PTR_ERR(mapping);
			break;
		}
		atomic_inc(&etnaviv_obj->gpu_active);

		submit->bos[i].flags |= BO_PINNED;
		submit->bos[i].mapping = mapping;
	}

	return ret;
}

static int submit_bo(struct etnaviv_gem_submit *submit, u32 idx,
	struct etnaviv_gem_submit_bo **bo)
{
	if (idx >= submit->nr_bos) {
		DRM_ERROR("invalid buffer index: %u (out of %u)\n",
				idx, submit->nr_bos);
		return -EINVAL;
	}

	*bo = &submit->bos[idx];

	return 0;
}

/* process the reloc's and patch up the cmdstream as needed: */
static int submit_reloc(struct etnaviv_gem_submit *submit, void *stream,
		u32 size, const struct drm_etnaviv_gem_submit_reloc *relocs,
		u32 nr_relocs)
{
	u32 i, last_offset = 0;
	u32 *ptr = stream;
	int ret;

	for (i = 0; i < nr_relocs; i++) {
		const struct drm_etnaviv_gem_submit_reloc *r = relocs + i;
		struct etnaviv_gem_submit_bo *bo;
		u32 off;

		if (unlikely(r->flags)) {
			DRM_ERROR("invalid reloc flags\n");
			return -EINVAL;
		}

		if (r->submit_offset % 4) {
			DRM_ERROR("non-aligned reloc offset: %u\n",
				  r->submit_offset);
			return -EINVAL;
		}

		/* offset in dwords: */
		off = r->submit_offset / 4;

		if ((off >= size ) ||
				(off < last_offset)) {
			DRM_ERROR("invalid offset %u at reloc %u\n", off, i);
			return -EINVAL;
		}

		ret = submit_bo(submit, r->reloc_idx, &bo);
		if (ret)
			return ret;

		if (r->reloc_offset > bo->obj->base.size - sizeof(*ptr)) {
			DRM_ERROR("relocation %u outside object\n", i);
			return -EINVAL;
		}

		ptr[off] = bo->mapping->iova + r->reloc_offset;

		last_offset = off;
	}

	return 0;
}

static int submit_perfmon_validate(struct etnaviv_gem_submit *submit,
		u32 exec_state, const struct drm_etnaviv_gem_submit_pmr *pmrs)
{
	u32 i;

	for (i = 0; i < submit->nr_pmrs; i++) {
		const struct drm_etnaviv_gem_submit_pmr *r = pmrs + i;
		struct etnaviv_gem_submit_bo *bo;
		int ret;

		ret = submit_bo(submit, r->read_idx, &bo);
		if (ret)
			return ret;

		/* at offset 0 a sequence number gets stored used for userspace sync */
		if (r->read_offset == 0) {
			DRM_ERROR("perfmon request: offset is 0");
			return -EINVAL;
		}

		if (r->read_offset >= bo->obj->base.size - sizeof(u32)) {
			DRM_ERROR("perfmon request: offset %u outside object", i);
			return -EINVAL;
		}

		if (r->flags & ~(ETNA_PM_PROCESS_PRE | ETNA_PM_PROCESS_POST)) {
			DRM_ERROR("perfmon request: flags are not valid");
			return -EINVAL;
		}

		if (etnaviv_pm_req_validate(r, exec_state)) {
			DRM_ERROR("perfmon request: domain or signal not valid");
			return -EINVAL;
		}

		submit->pmrs[i].flags = r->flags;
		submit->pmrs[i].domain = r->domain;
		submit->pmrs[i].signal = r->signal;
		submit->pmrs[i].sequence = r->sequence;
		submit->pmrs[i].offset = r->read_offset;
		submit->pmrs[i].bo_vma = etnaviv_gem_vmap(&bo->obj->base);
	}

	return 0;
}

static void submit_cleanup(struct kref *kref)
{
	struct etnaviv_gem_submit *submit =
			container_of(kref, struct etnaviv_gem_submit, refcount);
	unsigned i;

	if (submit->runtime_resumed)
		pm_runtime_put_autosuspend(submit->gpu->dev);

	if (submit->cmdbuf.suballoc)
		etnaviv_cmdbuf_free(&submit->cmdbuf);

	for (i = 0; i < submit->nr_bos; i++) {
		struct etnaviv_gem_object *etnaviv_obj = submit->bos[i].obj;

		/* unpin all objects */
		if (submit->bos[i].flags & BO_PINNED) {
			etnaviv_gem_mapping_unreference(submit->bos[i].mapping);
			atomic_dec(&etnaviv_obj->gpu_active);
			submit->bos[i].mapping = NULL;
			submit->bos[i].flags &= ~BO_PINNED;
		}

		/* if the GPU submit failed, objects might still be locked */
		submit_unlock_object(submit, i);
		drm_gem_object_put_unlocked(&etnaviv_obj->base);
	}

	wake_up_all(&submit->gpu->fence_event);

	if (submit->in_fence)
		dma_fence_put(submit->in_fence);
	if (submit->out_fence) {
		/* first remove from IDR, so fence can not be found anymore */
		mutex_lock(&submit->gpu->fence_lock);
		idr_remove(&submit->gpu->fence_idr, submit->out_fence_id);
		mutex_unlock(&submit->gpu->fence_lock);
		dma_fence_put(submit->out_fence);
	}
	kfree(submit->pmrs);
	kfree(submit);
}

void etnaviv_submit_put(struct etnaviv_gem_submit *submit)
{
	kref_put(&submit->refcount, submit_cleanup);
}

int etnaviv_ioctl_gem_submit(struct drm_device *dev, void *data,
		struct drm_file *file)
{
	struct etnaviv_file_private *ctx = file->driver_priv;
	struct etnaviv_drm_private *priv = dev->dev_private;
	struct drm_etnaviv_gem_submit *args = data;
	struct drm_etnaviv_gem_submit_reloc *relocs;
	struct drm_etnaviv_gem_submit_pmr *pmrs;
	struct drm_etnaviv_gem_submit_bo *bos;
	struct etnaviv_gem_submit *submit;
	struct etnaviv_gpu *gpu;
	struct sync_file *sync_file = NULL;
	struct ww_acquire_ctx ticket;
	int out_fence_fd = -1;
	void *stream;
	int ret;

	if (args->pipe >= ETNA_MAX_PIPES)
		return -EINVAL;

	gpu = priv->gpu[args->pipe];
	if (!gpu)
		return -ENXIO;

	if (args->stream_size % 4) {
		DRM_ERROR("non-aligned cmdstream buffer size: %u\n",
			  args->stream_size);
		return -EINVAL;
	}

	if (args->exec_state != ETNA_PIPE_3D &&
	    args->exec_state != ETNA_PIPE_2D &&
	    args->exec_state != ETNA_PIPE_VG) {
		DRM_ERROR("invalid exec_state: 0x%x\n", args->exec_state);
		return -EINVAL;
	}

	if (args->flags & ~ETNA_SUBMIT_FLAGS) {
		DRM_ERROR("invalid flags: 0x%x\n", args->flags);
		return -EINVAL;
	}

	/*
	 * Copy the command submission and bo array to kernel space in
	 * one go, and do this outside of any locks.
	 */
	bos = kvmalloc_array(args->nr_bos, sizeof(*bos), GFP_KERNEL);
	relocs = kvmalloc_array(args->nr_relocs, sizeof(*relocs), GFP_KERNEL);
	pmrs = kvmalloc_array(args->nr_pmrs, sizeof(*pmrs), GFP_KERNEL);
	stream = kvmalloc_array(1, args->stream_size, GFP_KERNEL);
	if (!bos || !relocs || !pmrs || !stream) {
		ret = -ENOMEM;
		goto err_submit_cmds;
	}

	ret = copy_from_user(bos, u64_to_user_ptr(args->bos),
			     args->nr_bos * sizeof(*bos));
	if (ret) {
		ret = -EFAULT;
		goto err_submit_cmds;
	}

	ret = copy_from_user(relocs, u64_to_user_ptr(args->relocs),
			     args->nr_relocs * sizeof(*relocs));
	if (ret) {
		ret = -EFAULT;
		goto err_submit_cmds;
	}

	ret = copy_from_user(pmrs, u64_to_user_ptr(args->pmrs),
			     args->nr_pmrs * sizeof(*pmrs));
	if (ret) {
		ret = -EFAULT;
		goto err_submit_cmds;
	}

	ret = copy_from_user(stream, u64_to_user_ptr(args->stream),
			     args->stream_size);
	if (ret) {
		ret = -EFAULT;
		goto err_submit_cmds;
	}

	if (args->flags & ETNA_SUBMIT_FENCE_FD_OUT) {
		out_fence_fd = get_unused_fd_flags(O_CLOEXEC);
		if (out_fence_fd < 0) {
			ret = out_fence_fd;
			goto err_submit_cmds;
		}
	}

	ww_acquire_init(&ticket, &reservation_ww_class);

	submit = submit_create(dev, gpu, args->nr_bos, args->nr_pmrs);
	if (!submit) {
		ret = -ENOMEM;
		goto err_submit_ww_acquire;
	}

	ret = etnaviv_cmdbuf_init(gpu->cmdbuf_suballoc, &submit->cmdbuf,
				  ALIGN(args->stream_size, 8) + 8);
	if (ret)
		goto err_submit_objects;

	submit->ctx = file->driver_priv;
	submit->exec_state = args->exec_state;
	submit->flags = args->flags;

	ret = submit_lookup_objects(submit, file, bos, args->nr_bos);
	if (ret)
		goto err_submit_objects;

	if (!etnaviv_cmd_validate_one(gpu, stream, args->stream_size / 4,
				      relocs, args->nr_relocs)) {
		ret = -EINVAL;
		goto err_submit_objects;
	}

	if (args->flags & ETNA_SUBMIT_FENCE_FD_IN) {
		submit->in_fence = sync_file_get_fence(args->fence_fd);
		if (!submit->in_fence) {
			ret = -EINVAL;
			goto err_submit_objects;
		}
	}

	ret = submit_pin_objects(submit);
	if (ret)
		goto err_submit_objects;

	ret = submit_reloc(submit, stream, args->stream_size / 4,
			   relocs, args->nr_relocs);
	if (ret)
		goto err_submit_objects;

	ret = submit_perfmon_validate(submit, args->exec_state, pmrs);
	if (ret)
		goto err_submit_objects;

	memcpy(submit->cmdbuf.vaddr, stream, args->stream_size);

	ret = submit_lock_objects(submit, &ticket);
	if (ret)
		goto err_submit_objects;

	ret = submit_fence_sync(submit);
	if (ret)
		goto err_submit_objects;

	ret = etnaviv_sched_push_job(&ctx->sched_entity[args->pipe], submit);
	if (ret)
		goto err_submit_objects;

	submit_attach_object_fences(submit);

	if (args->flags & ETNA_SUBMIT_FENCE_FD_OUT) {
		/*
		 * This can be improved: ideally we want to allocate the sync
		 * file before kicking off the GPU job and just attach the
		 * fence to the sync file here, eliminating the ENOMEM
		 * possibility at this stage.
		 */
		sync_file = sync_file_create(submit->out_fence);
		if (!sync_file) {
			ret = -ENOMEM;
			goto err_submit_objects;
		}
		fd_install(out_fence_fd, sync_file->file);
	}

	args->fence_fd = out_fence_fd;
	args->fence = submit->out_fence_id;

err_submit_objects:
	etnaviv_submit_put(submit);

err_submit_ww_acquire:
	ww_acquire_fini(&ticket);

err_submit_cmds:
	if (ret && (out_fence_fd >= 0))
		put_unused_fd(out_fence_fd);
	if (stream)
		kvfree(stream);
	if (bos)
		kvfree(bos);
	if (relocs)
		kvfree(relocs);
	if (pmrs)
		kvfree(pmrs);

	return ret;
}
Commit	Line	Data
caab277b	1	// SPDX-License-Identifier: GPL-2.0-only
a8c21a54 T	2	/*
a8c21a54 T	3	* Copyright (C) 2015 Etnaviv Project
a8c21a54 T	4	*/
a8c21a54 T	5
9ad59fea	6	#include <linux/dma-fence-array.h>
a8c21a54	7	#include <linux/reservation.h>
9ad59fea	8	#include <linux/sync_file.h>
ea1f5729	9	#include "etnaviv_cmdbuf.h"
a8c21a54 T	10	#include "etnaviv_drv.h"
	11	#include "etnaviv_gpu.h"
	12	#include "etnaviv_gem.h"
c8e4a7fd	13	#include "etnaviv_perfmon.h"
e93b6dee	14	#include "etnaviv_sched.h"
a8c21a54 T	15
	16	/*
	17	* Cmdstream submission:
	18	*/
	19
	20	#define BO_INVALID_FLAGS ~(ETNA_SUBMIT_BO_READ \| ETNA_SUBMIT_BO_WRITE)
	21	/* make sure these don't conflict w/ ETNAVIV_SUBMIT_BO_x */
	22	#define BO_LOCKED 0x4000
	23	#define BO_PINNED 0x2000
	24
a8c21a54	25	static struct etnaviv_gem_submit submit_create(struct drm_device dev,
ef146c00	26	struct etnaviv_gpu *gpu, size_t nr_bos, size_t nr_pmrs)
a8c21a54 T	27	{
a8c21a54 T	28	struct etnaviv_gem_submit *submit;
ef146c00	29	size_t sz = size_vstruct(nr_bos, sizeof(submit->bos[0]), sizeof(*submit));
a8c21a54	30
c5283723 LS	31	submit = kzalloc(sz, GFP_KERNEL);
	32	if (!submit)
	33	return NULL;
a8c21a54	34
ef146c00 LS	35	submit->pmrs = kcalloc(nr_pmrs, sizeof(struct etnaviv_perfmon_request),
	36	GFP_KERNEL);
	37	if (!submit->pmrs) {
	38	kfree(submit);
	39	return NULL;
	40	}
	41	submit->nr_pmrs = nr_pmrs;
	42
c5283723	43	submit->gpu = gpu;
e0329e6c	44	kref_init(&submit->refcount);
a8c21a54	45
a8c21a54 T	46	return submit;
	47	}
	48
	49	static int submit_lookup_objects(struct etnaviv_gem_submit *submit,
	50	struct drm_file file, struct drm_etnaviv_gem_submit_bo submit_bos,
	51	unsigned nr_bos)
	52	{
	53	struct drm_etnaviv_gem_submit_bo *bo;
	54	unsigned i;
	55	int ret = 0;
	56
	57	spin_lock(&file->table_lock);
	58
	59	for (i = 0, bo = submit_bos; i < nr_bos; i++, bo++) {
	60	struct drm_gem_object *obj;
	61
	62	if (bo->flags & BO_INVALID_FLAGS) {
	63	DRM_ERROR("invalid flags: %x\n", bo->flags);
	64	ret = -EINVAL;
	65	goto out_unlock;
	66	}
	67
	68	submit->bos[i].flags = bo->flags;
	69
	70	/* normally use drm_gem_object_lookup(), but for bulk lookup
	71	* all under single table_lock just hit object_idr directly:
	72	*/
	73	obj = idr_find(&file->object_idr, bo->handle);
	74	if (!obj) {
	75	DRM_ERROR("invalid handle %u at index %u\n",
	76	bo->handle, i);
	77	ret = -EINVAL;
	78	goto out_unlock;
	79	}
	80
	81	/*
	82	* Take a refcount on the object. The file table lock
	83	* prevents the object_idr's refcount on this being dropped.
	84	*/
23d1dd03	85	drm_gem_object_get(obj);
a8c21a54 T	86
	87	submit->bos[i].obj = to_etnaviv_bo(obj);
	88	}
	89
	90	out_unlock:
	91	submit->nr_bos = i;
	92	spin_unlock(&file->table_lock);
	93
	94	return ret;
	95	}
	96
	97	static void submit_unlock_object(struct etnaviv_gem_submit *submit, int i)
	98	{
	99	if (submit->bos[i].flags & BO_LOCKED) {
fa238ea1	100	struct drm_gem_object *obj = &submit->bos[i].obj->base;
a8c21a54	101
fa238ea1	102	ww_mutex_unlock(&obj->resv->lock);
a8c21a54 T	103	submit->bos[i].flags &= ~BO_LOCKED;
	104	}
	105	}
	106
08301d73 LS	107	static int submit_lock_objects(struct etnaviv_gem_submit *submit,
08301d73 LS	108	struct ww_acquire_ctx *ticket)
a8c21a54 T	109	{
	110	int contended, slow_locked = -1, i, ret = 0;
	111
	112	retry:
	113	for (i = 0; i < submit->nr_bos; i++) {
fa238ea1	114	struct drm_gem_object *obj = &submit->bos[i].obj->base;
a8c21a54 T	115
	116	if (slow_locked == i)
	117	slow_locked = -1;
	118
	119	contended = i;
	120
	121	if (!(submit->bos[i].flags & BO_LOCKED)) {
fa238ea1	122	ret = ww_mutex_lock_interruptible(&obj->resv->lock,
08301d73	123	ticket);
a8c21a54 T	124	if (ret == -EALREADY)
	125	DRM_ERROR("BO at index %u already on submit list\n",
	126	i);
	127	if (ret)
	128	goto fail;
	129	submit->bos[i].flags \|= BO_LOCKED;
	130	}
	131	}
	132
08301d73	133	ww_acquire_done(ticket);
a8c21a54 T	134
	135	return 0;
	136
	137	fail:
	138	for (; i >= 0; i--)
	139	submit_unlock_object(submit, i);
	140
	141	if (slow_locked > 0)
	142	submit_unlock_object(submit, slow_locked);
	143
	144	if (ret == -EDEADLK) {
fa238ea1	145	struct drm_gem_object *obj;
a8c21a54	146
fa238ea1	147	obj = &submit->bos[contended].obj->base;
a8c21a54 T	148
a8c21a54 T	149	/* we lost out in a seqno race, lock and retry.. */
fa238ea1	150	ret = ww_mutex_lock_slow_interruptible(&obj->resv->lock,
08301d73	151	ticket);
a8c21a54 T	152	if (!ret) {
	153	submit->bos[contended].flags \|= BO_LOCKED;
	154	slow_locked = contended;
	155	goto retry;
	156	}
	157	}
	158
	159	return ret;
	160	}
	161
683da226	162	static int submit_fence_sync(struct etnaviv_gem_submit *submit)
a8c21a54	163	{
a8c21a54 T	164	int i, ret = 0;
	165
	166	for (i = 0; i < submit->nr_bos; i++) {
683da226	167	struct etnaviv_gem_submit_bo *bo = &submit->bos[i];
fa238ea1	168	struct reservation_object *robj = bo->obj->base.resv;
a8c21a54	169
683da226	170	if (!(bo->flags & ETNA_SUBMIT_BO_WRITE)) {
ca05359f	171	ret = reservation_object_reserve_shared(robj, 1);
683da226 LS	172	if (ret)
	173	return ret;
	174	}
	175
	176	if (submit->flags & ETNA_SUBMIT_NO_IMPLICIT)
	177	continue;
	178
	179	if (bo->flags & ETNA_SUBMIT_BO_WRITE) {
	180	ret = reservation_object_get_fences_rcu(robj, &bo->excl,
	181	&bo->nr_shared,
	182	&bo->shared);
	183	if (ret)
	184	return ret;
	185	} else {
	186	bo->excl = reservation_object_get_excl_rcu(robj);
	187	}
a8c21a54	188
9efabd73 LS	189	}
9efabd73 LS	190
a8c21a54 T	191	return ret;
	192	}
	193
0236efe9 LS	194	static void submit_attach_object_fences(struct etnaviv_gem_submit *submit)
	195	{
	196	int i;
	197
	198	for (i = 0; i < submit->nr_bos; i++) {
fa238ea1	199	struct drm_gem_object *obj = &submit->bos[i].obj->base;
0236efe9 LS	200
0236efe9 LS	201	if (submit->bos[i].flags & ETNA_SUBMIT_BO_WRITE)
fa238ea1	202	reservation_object_add_excl_fence(obj->resv,
10009ea2	203	submit->out_fence);
0236efe9	204	else
fa238ea1	205	reservation_object_add_shared_fence(obj->resv,
10009ea2	206	submit->out_fence);
0236efe9 LS	207
	208	submit_unlock_object(submit, i);
	209	}
	210	}
	211
a8c21a54 T	212	static int submit_pin_objects(struct etnaviv_gem_submit *submit)
	213	{
	214	int i, ret = 0;
	215
	216	for (i = 0; i < submit->nr_bos; i++) {
	217	struct etnaviv_gem_object *etnaviv_obj = submit->bos[i].obj;
b6325f40	218	struct etnaviv_vram_mapping *mapping;
a8c21a54	219
b6325f40 RK	220	mapping = etnaviv_gem_mapping_get(&etnaviv_obj->base,
	221	submit->gpu);
	222	if (IS_ERR(mapping)) {
	223	ret = PTR_ERR(mapping);
a8c21a54	224	break;
b6325f40	225	}
5b223e94	226	atomic_inc(&etnaviv_obj->gpu_active);
a8c21a54 T	227
a8c21a54 T	228	submit->bos[i].flags \|= BO_PINNED;
b6325f40	229	submit->bos[i].mapping = mapping;
a8c21a54 T	230	}
	231
	232	return ret;
	233	}
	234
	235	static int submit_bo(struct etnaviv_gem_submit *submit, u32 idx,
8779aa8f	236	struct etnaviv_gem_submit_bo **bo)
a8c21a54 T	237	{
	238	if (idx >= submit->nr_bos) {
	239	DRM_ERROR("invalid buffer index: %u (out of %u)\n",
	240	idx, submit->nr_bos);
	241	return -EINVAL;
	242	}
	243
8779aa8f	244	*bo = &submit->bos[idx];
a8c21a54 T	245
	246	return 0;
	247	}
	248
	249	/* process the reloc's and patch up the cmdstream as needed: */
	250	static int submit_reloc(struct etnaviv_gem_submit submit, void stream,
	251	u32 size, const struct drm_etnaviv_gem_submit_reloc *relocs,
	252	u32 nr_relocs)
	253	{
	254	u32 i, last_offset = 0;
	255	u32 *ptr = stream;
	256	int ret;
	257
	258	for (i = 0; i < nr_relocs; i++) {
	259	const struct drm_etnaviv_gem_submit_reloc *r = relocs + i;
8779aa8f RK	260	struct etnaviv_gem_submit_bo *bo;
8779aa8f RK	261	u32 off;
a8c21a54 T	262
	263	if (unlikely(r->flags)) {
	264	DRM_ERROR("invalid reloc flags\n");
	265	return -EINVAL;
	266	}
	267
	268	if (r->submit_offset % 4) {
	269	DRM_ERROR("non-aligned reloc offset: %u\n",
	270	r->submit_offset);
	271	return -EINVAL;
	272	}
	273
	274	/* offset in dwords: */
	275	off = r->submit_offset / 4;
	276
	277	if ((off >= size ) \|\|
	278	(off < last_offset)) {
	279	DRM_ERROR("invalid offset %u at reloc %u\n", off, i);
	280	return -EINVAL;
	281	}
	282
8779aa8f	283	ret = submit_bo(submit, r->reloc_idx, &bo);
a8c21a54 T	284	if (ret)
	285	return ret;
	286
d6f756e0 WL	287	if (r->reloc_offset > bo->obj->base.size - sizeof(*ptr)) {
d6f756e0 WL	288	DRM_ERROR("relocation %u outside object\n", i);
a8c21a54 T	289	return -EINVAL;
	290	}
	291
8779aa8f	292	ptr[off] = bo->mapping->iova + r->reloc_offset;
a8c21a54 T	293
	294	last_offset = off;
	295	}
	296
	297	return 0;
	298	}
	299
c8e4a7fd	300	static int submit_perfmon_validate(struct etnaviv_gem_submit *submit,
ef146c00	301	u32 exec_state, const struct drm_etnaviv_gem_submit_pmr *pmrs)
c8e4a7fd CG	302	{
	303	u32 i;
	304
ef146c00	305	for (i = 0; i < submit->nr_pmrs; i++) {
c8e4a7fd CG	306	const struct drm_etnaviv_gem_submit_pmr *r = pmrs + i;
	307	struct etnaviv_gem_submit_bo *bo;
	308	int ret;
	309
	310	ret = submit_bo(submit, r->read_idx, &bo);
	311	if (ret)
	312	return ret;
	313
	314	/* at offset 0 a sequence number gets stored used for userspace sync */
	315	if (r->read_offset == 0) {
	316	DRM_ERROR("perfmon request: offset is 0");
	317	return -EINVAL;
	318	}
	319
	320	if (r->read_offset >= bo->obj->base.size - sizeof(u32)) {
	321	DRM_ERROR("perfmon request: offset %u outside object", i);
	322	return -EINVAL;
	323	}
	324
	325	if (r->flags & ~(ETNA_PM_PROCESS_PRE \| ETNA_PM_PROCESS_POST)) {
	326	DRM_ERROR("perfmon request: flags are not valid");
	327	return -EINVAL;
	328	}
	329
ef146c00	330	if (etnaviv_pm_req_validate(r, exec_state)) {
c8e4a7fd CG	331	DRM_ERROR("perfmon request: domain or signal not valid");
	332	return -EINVAL;
	333	}
	334
ef146c00 LS	335	submit->pmrs[i].flags = r->flags;
	336	submit->pmrs[i].domain = r->domain;
	337	submit->pmrs[i].signal = r->signal;
	338	submit->pmrs[i].sequence = r->sequence;
	339	submit->pmrs[i].offset = r->read_offset;
	340	submit->pmrs[i].bo_vma = etnaviv_gem_vmap(&bo->obj->base);
c8e4a7fd CG	341	}
	342
	343	return 0;
	344	}
	345
e0329e6c	346	static void submit_cleanup(struct kref *kref)
a8c21a54	347	{
e0329e6c LS	348	struct etnaviv_gem_submit *submit =
e0329e6c LS	349	container_of(kref, struct etnaviv_gem_submit, refcount);
a8c21a54 T	350	unsigned i;
a8c21a54 T	351
8bda1516 LS	352	if (submit->runtime_resumed)
	353	pm_runtime_put_autosuspend(submit->gpu->dev);
	354
2f9225db LS	355	if (submit->cmdbuf.suballoc)
	356	etnaviv_cmdbuf_free(&submit->cmdbuf);
	357
a8c21a54 T	358	for (i = 0; i < submit->nr_bos; i++) {
	359	struct etnaviv_gem_object *etnaviv_obj = submit->bos[i].obj;
	360
33a63e68 LS	361	/* unpin all objects */
	362	if (submit->bos[i].flags & BO_PINNED) {
	363	etnaviv_gem_mapping_unreference(submit->bos[i].mapping);
5b223e94	364	atomic_dec(&etnaviv_obj->gpu_active);
33a63e68 LS	365	submit->bos[i].mapping = NULL;
	366	submit->bos[i].flags &= ~BO_PINNED;
	367	}
	368
0236efe9	369	/* if the GPU submit failed, objects might still be locked */
a8c21a54	370	submit_unlock_object(submit, i);
23d1dd03	371	drm_gem_object_put_unlocked(&etnaviv_obj->base);
a8c21a54 T	372	}
a8c21a54 T	373
5b223e94 LS	374	wake_up_all(&submit->gpu->fence_event);
5b223e94 LS	375
9efabd73 LS	376	if (submit->in_fence)
9efabd73 LS	377	dma_fence_put(submit->in_fence);
e93b6dee LS	378	if (submit->out_fence) {
e93b6dee LS	379	/* first remove from IDR, so fence can not be found anymore */
a0780bb1	380	mutex_lock(&submit->gpu->fence_lock);
e93b6dee	381	idr_remove(&submit->gpu->fence_idr, submit->out_fence_id);
a0780bb1	382	mutex_unlock(&submit->gpu->fence_lock);
10009ea2	383	dma_fence_put(submit->out_fence);
e93b6dee	384	}
ef146c00	385	kfree(submit->pmrs);
a8c21a54 T	386	kfree(submit);
	387	}
	388
e0329e6c LS	389	void etnaviv_submit_put(struct etnaviv_gem_submit *submit)
	390	{
	391	kref_put(&submit->refcount, submit_cleanup);
	392	}
	393
a8c21a54 T	394	int etnaviv_ioctl_gem_submit(struct drm_device dev, void data,
	395	struct drm_file *file)
	396	{
e93b6dee	397	struct etnaviv_file_private *ctx = file->driver_priv;
a8c21a54 T	398	struct etnaviv_drm_private *priv = dev->dev_private;
	399	struct drm_etnaviv_gem_submit *args = data;
	400	struct drm_etnaviv_gem_submit_reloc *relocs;
c8e4a7fd	401	struct drm_etnaviv_gem_submit_pmr *pmrs;
a8c21a54 T	402	struct drm_etnaviv_gem_submit_bo *bos;
a8c21a54 T	403	struct etnaviv_gem_submit *submit;
a8c21a54	404	struct etnaviv_gpu *gpu;
78ec187f	405	struct sync_file *sync_file = NULL;
08301d73	406	struct ww_acquire_ctx ticket;
78ec187f	407	int out_fence_fd = -1;
a8c21a54 T	408	void *stream;
	409	int ret;
	410
	411	if (args->pipe >= ETNA_MAX_PIPES)
	412	return -EINVAL;
	413
	414	gpu = priv->gpu[args->pipe];
	415	if (!gpu)
	416	return -ENXIO;
	417
	418	if (args->stream_size % 4) {
	419	DRM_ERROR("non-aligned cmdstream buffer size: %u\n",
	420	args->stream_size);
	421	return -EINVAL;
	422	}
	423
	424	if (args->exec_state != ETNA_PIPE_3D &&
	425	args->exec_state != ETNA_PIPE_2D &&
	426	args->exec_state != ETNA_PIPE_VG) {
	427	DRM_ERROR("invalid exec_state: 0x%x\n", args->exec_state);
	428	return -EINVAL;
	429	}
	430
9ad59fea PZ	431	if (args->flags & ~ETNA_SUBMIT_FLAGS) {
	432	DRM_ERROR("invalid flags: 0x%x\n", args->flags);
	433	return -EINVAL;
	434	}
	435
a8c21a54 T	436	/*
	437	* Copy the command submission and bo array to kernel space in
	438	* one go, and do this outside of any locks.
	439	*/
2098105e MH	440	bos = kvmalloc_array(args->nr_bos, sizeof(*bos), GFP_KERNEL);
2098105e MH	441	relocs = kvmalloc_array(args->nr_relocs, sizeof(*relocs), GFP_KERNEL);
c8e4a7fd	442	pmrs = kvmalloc_array(args->nr_pmrs, sizeof(*pmrs), GFP_KERNEL);
2098105e	443	stream = kvmalloc_array(1, args->stream_size, GFP_KERNEL);
2f9225db	444	if (!bos \|\| !relocs \|\| !pmrs \|\| !stream) {
a8c21a54 T	445	ret = -ENOMEM;
	446	goto err_submit_cmds;
	447	}
	448
3ed605bc	449	ret = copy_from_user(bos, u64_to_user_ptr(args->bos),
a8c21a54 T	450	args->nr_bos * sizeof(*bos));
	451	if (ret) {
	452	ret = -EFAULT;
	453	goto err_submit_cmds;
	454	}
	455
3ed605bc	456	ret = copy_from_user(relocs, u64_to_user_ptr(args->relocs),
a8c21a54 T	457	args->nr_relocs * sizeof(*relocs));
	458	if (ret) {
	459	ret = -EFAULT;
	460	goto err_submit_cmds;
	461	}
	462
c8e4a7fd CG	463	ret = copy_from_user(pmrs, u64_to_user_ptr(args->pmrs),
	464	args->nr_pmrs * sizeof(*pmrs));
	465	if (ret) {
	466	ret = -EFAULT;
	467	goto err_submit_cmds;
	468	}
c8e4a7fd	469
3ed605bc	470	ret = copy_from_user(stream, u64_to_user_ptr(args->stream),
a8c21a54 T	471	args->stream_size);
	472	if (ret) {
	473	ret = -EFAULT;
	474	goto err_submit_cmds;
	475	}
	476
78ec187f PZ	477	if (args->flags & ETNA_SUBMIT_FENCE_FD_OUT) {
	478	out_fence_fd = get_unused_fd_flags(O_CLOEXEC);
	479	if (out_fence_fd < 0) {
	480	ret = out_fence_fd;
	481	goto err_submit_cmds;
	482	}
	483	}
	484
08301d73 LS	485	ww_acquire_init(&ticket, &reservation_ww_class);
08301d73 LS	486
ef146c00	487	submit = submit_create(dev, gpu, args->nr_bos, args->nr_pmrs);
a8c21a54 T	488	if (!submit) {
a8c21a54 T	489	ret = -ENOMEM;
08301d73	490	goto err_submit_ww_acquire;
a8c21a54 T	491	}
a8c21a54 T	492
2f9225db LS	493	ret = etnaviv_cmdbuf_init(gpu->cmdbuf_suballoc, &submit->cmdbuf,
	494	ALIGN(args->stream_size, 8) + 8);
	495	if (ret)
	496	goto err_submit_objects;
	497
72ac64b8	498	submit->ctx = file->driver_priv;
797b0159	499	submit->exec_state = args->exec_state;
9ad59fea PZ	500	submit->flags = args->flags;
9ad59fea PZ	501
a8c21a54 T	502	ret = submit_lookup_objects(submit, file, bos, args->nr_bos);
	503	if (ret)
	504	goto err_submit_objects;
	505
a8c21a54 T	506	if (!etnaviv_cmd_validate_one(gpu, stream, args->stream_size / 4,
	507	relocs, args->nr_relocs)) {
	508	ret = -EINVAL;
	509	goto err_submit_objects;
	510	}
	511
9ad59fea	512	if (args->flags & ETNA_SUBMIT_FENCE_FD_IN) {
9efabd73 LS	513	submit->in_fence = sync_file_get_fence(args->fence_fd);
9efabd73 LS	514	if (!submit->in_fence) {
9ad59fea PZ	515	ret = -EINVAL;
	516	goto err_submit_objects;
	517	}
9ad59fea PZ	518	}
9ad59fea PZ	519
a8c21a54 T	520	ret = submit_pin_objects(submit);
a8c21a54 T	521	if (ret)
33a63e68	522	goto err_submit_objects;
a8c21a54 T	523
	524	ret = submit_reloc(submit, stream, args->stream_size / 4,
	525	relocs, args->nr_relocs);
	526	if (ret)
33a63e68	527	goto err_submit_objects;
a8c21a54	528
ef146c00	529	ret = submit_perfmon_validate(submit, args->exec_state, pmrs);
c8e4a7fd	530	if (ret)
33a63e68	531	goto err_submit_objects;
c8e4a7fd	532
2f9225db	533	memcpy(submit->cmdbuf.vaddr, stream, args->stream_size);
a8c21a54	534
e0580254 LS	535	ret = submit_lock_objects(submit, &ticket);
	536	if (ret)
	537	goto err_submit_objects;
	538
	539	ret = submit_fence_sync(submit);
	540	if (ret)
	541	goto err_submit_objects;
	542
e93b6dee	543	ret = etnaviv_sched_push_job(&ctx->sched_entity[args->pipe], submit);
5a642e6b	544	if (ret)
33a63e68	545	goto err_submit_objects;
5a642e6b	546
0236efe9 LS	547	submit_attach_object_fences(submit);
0236efe9 LS	548
78ec187f PZ	549	if (args->flags & ETNA_SUBMIT_FENCE_FD_OUT) {
	550	/*
	551	* This can be improved: ideally we want to allocate the sync
	552	* file before kicking off the GPU job and just attach the
	553	* fence to the sync file here, eliminating the ENOMEM
	554	* possibility at this stage.
	555	*/
10009ea2	556	sync_file = sync_file_create(submit->out_fence);
78ec187f PZ	557	if (!sync_file) {
78ec187f PZ	558	ret = -ENOMEM;
33a63e68	559	goto err_submit_objects;
78ec187f PZ	560	}
	561	fd_install(out_fence_fd, sync_file->file);
	562	}
	563
	564	args->fence_fd = out_fence_fd;
8bc4d885	565	args->fence = submit->out_fence_id;
a8c21a54	566
a8c21a54	567	err_submit_objects:
e0329e6c	568	etnaviv_submit_put(submit);
a8c21a54	569
08301d73 LS	570	err_submit_ww_acquire:
	571	ww_acquire_fini(&ticket);
	572
a8c21a54	573	err_submit_cmds:
78ec187f PZ	574	if (ret && (out_fence_fd >= 0))
78ec187f PZ	575	put_unused_fd(out_fence_fd);
a8c21a54	576	if (stream)
2098105e	577	kvfree(stream);
a8c21a54	578	if (bos)
2098105e	579	kvfree(bos);
a8c21a54	580	if (relocs)
2098105e	581	kvfree(relocs);
c8e4a7fd CG	582	if (pmrs)
c8e4a7fd CG	583	kvfree(pmrs);
a8c21a54 T	584
	585	return ret;
	586	}