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

/*
 * Copyright (C) 2015 Etnaviv Project
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 as published by
 * the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#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"

/*
 * 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)
{
	struct etnaviv_gem_submit *submit;
	size_t sz = size_vstruct(nr, sizeof(submit->bos[0]), sizeof(*submit));

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

	submit->gpu = gpu;

	ww_acquire_init(&submit->ticket, &reservation_ww_class);

	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 etnaviv_gem_object *etnaviv_obj = submit->bos[i].obj;

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

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

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

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

		contended = i;

		if (!(submit->bos[i].flags & BO_LOCKED)) {
			ret = ww_mutex_lock_interruptible(&etnaviv_obj->resv->lock,
					&submit->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(&submit->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 etnaviv_gem_object *etnaviv_obj;

		etnaviv_obj = submit->bos[contended].obj;

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

	return ret;
}

static int submit_fence_sync(const struct etnaviv_gem_submit *submit)
{
	unsigned int context = submit->gpu->fence_context;
	int i, ret = 0;

	for (i = 0; i < submit->nr_bos; i++) {
		struct etnaviv_gem_object *etnaviv_obj = submit->bos[i].obj;
		bool write = submit->bos[i].flags & ETNA_SUBMIT_BO_WRITE;
		bool explicit = !!(submit->flags & ETNA_SUBMIT_NO_IMPLICIT);

		ret = etnaviv_gpu_fence_sync_obj(etnaviv_obj, context, write,
						 explicit);
		if (ret)
			break;
	}

	if (submit->flags & ETNA_SUBMIT_FENCE_FD_IN) {
		/*
		 * Wait if the fence is from a foreign context, or if the fence
		 * array contains any fence from a foreign context.
		 */
		if (!dma_fence_match_context(submit->in_fence, context))
			ret = dma_fence_wait(submit->in_fence, true);
	}

	return ret;
}

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

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

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

		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,
		struct etnaviv_cmdbuf *cmdbuf,
		const struct drm_etnaviv_gem_submit_pmr *pmrs,
		u32 nr_pms)
{
	u32 i;

	for (i = 0; i < nr_pms; 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, cmdbuf->exec_state)) {
			DRM_ERROR("perfmon request: domain or signal not valid");
			return -EINVAL;
		}

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

	return 0;
}

static void submit_cleanup(struct etnaviv_gem_submit *submit)
{
	unsigned i;

	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);
			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);
	}

	ww_acquire_fini(&submit->ticket);
	if (submit->in_fence)
		dma_fence_put(submit->in_fence);
	if (submit->out_fence)
		dma_fence_put(submit->out_fence);
	kfree(submit);
}

int etnaviv_ioctl_gem_submit(struct drm_device *dev, void *data,
		struct drm_file *file)
{
	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_cmdbuf *cmdbuf;
	struct etnaviv_gpu *gpu;
	struct sync_file *sync_file = NULL;
	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);
	cmdbuf = etnaviv_cmdbuf_new(gpu->cmdbuf_suballoc,
				    ALIGN(args->stream_size, 8) + 8,
				    args->nr_bos, args->nr_pmrs);
	if (!bos || !relocs || !pmrs || !stream || !cmdbuf) {
		ret = -ENOMEM;
		goto err_submit_cmds;
	}

	cmdbuf->exec_state = args->exec_state;
	cmdbuf->ctx = file->driver_priv;

	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;
	}
	cmdbuf->nr_pmrs = args->nr_pmrs;

	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;
		}
	}

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

	submit->flags = args->flags;

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

	ret = submit_lock_objects(submit);
	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_fence_sync(submit);
	if (ret)
		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, cmdbuf, pmrs, args->nr_pmrs);
	if (ret)
		goto err_submit_objects;

	memcpy(cmdbuf->vaddr, stream, args->stream_size);
	cmdbuf->user_size = ALIGN(args->stream_size, 8);

	ret = etnaviv_gpu_submit(gpu, submit, cmdbuf);
	if (ret)
		goto err_submit_objects;

	submit_attach_object_fences(submit);

	cmdbuf = NULL;

	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->seqno;

err_submit_objects:
	submit_cleanup(submit);

err_submit_cmds:
	if (ret && (out_fence_fd >= 0))
		put_unused_fd(out_fence_fd);
	/* if we still own the cmdbuf */
	if (cmdbuf)
		etnaviv_cmdbuf_free(cmdbuf);
	if (stream)
		kvfree(stream);
	if (bos)
		kvfree(bos);
	if (relocs)
		kvfree(relocs);
	if (pmrs)
		kvfree(pmrs);

	return ret;
}
Commit	Line	Data
a8c21a54 T	1	/*
	2	* Copyright (C) 2015 Etnaviv Project
	3	*
	4	* This program is free software; you can redistribute it and/or modify it
	5	* under the terms of the GNU General Public License version 2 as published by
	6	* the Free Software Foundation.
	7	*
	8	* This program is distributed in the hope that it will be useful, but WITHOUT
	9	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	10	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
	11	* more details.
	12	*
	13	* You should have received a copy of the GNU General Public License along with
	14	* this program. If not, see <http://www.gnu.org/licenses/>.
	15	*/
	16
9ad59fea	17	#include <linux/dma-fence-array.h>
a8c21a54	18	#include <linux/reservation.h>
9ad59fea	19	#include <linux/sync_file.h>
ea1f5729	20	#include "etnaviv_cmdbuf.h"
a8c21a54 T	21	#include "etnaviv_drv.h"
	22	#include "etnaviv_gpu.h"
	23	#include "etnaviv_gem.h"
c8e4a7fd	24	#include "etnaviv_perfmon.h"
a8c21a54 T	25
	26	/*
	27	* Cmdstream submission:
	28	*/
	29
	30	#define BO_INVALID_FLAGS ~(ETNA_SUBMIT_BO_READ \| ETNA_SUBMIT_BO_WRITE)
	31	/* make sure these don't conflict w/ ETNAVIV_SUBMIT_BO_x */
	32	#define BO_LOCKED 0x4000
	33	#define BO_PINNED 0x2000
	34
a8c21a54 T	35	static struct etnaviv_gem_submit submit_create(struct drm_device dev,
	36	struct etnaviv_gpu *gpu, size_t nr)
	37	{
	38	struct etnaviv_gem_submit *submit;
	39	size_t sz = size_vstruct(nr, sizeof(submit->bos[0]), sizeof(*submit));
	40
c5283723 LS	41	submit = kzalloc(sz, GFP_KERNEL);
	42	if (!submit)
	43	return NULL;
a8c21a54	44
c5283723	45	submit->gpu = gpu;
a8c21a54	46
c5283723	47	ww_acquire_init(&submit->ticket, &reservation_ww_class);
a8c21a54 T	48
	49	return submit;
	50	}
	51
	52	static int submit_lookup_objects(struct etnaviv_gem_submit *submit,
	53	struct drm_file file, struct drm_etnaviv_gem_submit_bo submit_bos,
	54	unsigned nr_bos)
	55	{
	56	struct drm_etnaviv_gem_submit_bo *bo;
	57	unsigned i;
	58	int ret = 0;
	59
	60	spin_lock(&file->table_lock);
	61
	62	for (i = 0, bo = submit_bos; i < nr_bos; i++, bo++) {
	63	struct drm_gem_object *obj;
	64
	65	if (bo->flags & BO_INVALID_FLAGS) {
	66	DRM_ERROR("invalid flags: %x\n", bo->flags);
	67	ret = -EINVAL;
	68	goto out_unlock;
	69	}
	70
	71	submit->bos[i].flags = bo->flags;
	72
	73	/* normally use drm_gem_object_lookup(), but for bulk lookup
	74	* all under single table_lock just hit object_idr directly:
	75	*/
	76	obj = idr_find(&file->object_idr, bo->handle);
	77	if (!obj) {
	78	DRM_ERROR("invalid handle %u at index %u\n",
	79	bo->handle, i);
	80	ret = -EINVAL;
	81	goto out_unlock;
	82	}
	83
	84	/*
	85	* Take a refcount on the object. The file table lock
	86	* prevents the object_idr's refcount on this being dropped.
	87	*/
23d1dd03	88	drm_gem_object_get(obj);
a8c21a54 T	89
	90	submit->bos[i].obj = to_etnaviv_bo(obj);
	91	}
	92
	93	out_unlock:
	94	submit->nr_bos = i;
	95	spin_unlock(&file->table_lock);
	96
	97	return ret;
	98	}
	99
	100	static void submit_unlock_object(struct etnaviv_gem_submit *submit, int i)
	101	{
	102	if (submit->bos[i].flags & BO_LOCKED) {
	103	struct etnaviv_gem_object *etnaviv_obj = submit->bos[i].obj;
	104
	105	ww_mutex_unlock(&etnaviv_obj->resv->lock);
	106	submit->bos[i].flags &= ~BO_LOCKED;
	107	}
	108	}
	109
	110	static int submit_lock_objects(struct etnaviv_gem_submit *submit)
	111	{
	112	int contended, slow_locked = -1, i, ret = 0;
	113
	114	retry:
	115	for (i = 0; i < submit->nr_bos; i++) {
	116	struct etnaviv_gem_object *etnaviv_obj = submit->bos[i].obj;
	117
	118	if (slow_locked == i)
	119	slow_locked = -1;
	120
	121	contended = i;
	122
	123	if (!(submit->bos[i].flags & BO_LOCKED)) {
	124	ret = ww_mutex_lock_interruptible(&etnaviv_obj->resv->lock,
	125	&submit->ticket);
	126	if (ret == -EALREADY)
	127	DRM_ERROR("BO at index %u already on submit list\n",
	128	i);
	129	if (ret)
	130	goto fail;
	131	submit->bos[i].flags \|= BO_LOCKED;
	132	}
	133	}
	134
	135	ww_acquire_done(&submit->ticket);
	136
	137	return 0;
	138
	139	fail:
	140	for (; i >= 0; i--)
	141	submit_unlock_object(submit, i);
	142
	143	if (slow_locked > 0)
	144	submit_unlock_object(submit, slow_locked);
	145
	146	if (ret == -EDEADLK) {
	147	struct etnaviv_gem_object *etnaviv_obj;
	148
	149	etnaviv_obj = submit->bos[contended].obj;
	150
	151	/* we lost out in a seqno race, lock and retry.. */
	152	ret = ww_mutex_lock_slow_interruptible(&etnaviv_obj->resv->lock,
153	&submit->ticket);
154	if (!ret) {
155	submit->bos[contended].flags \|= BO_LOCKED;
156	slow_locked = contended;
157	goto retry;
158	}
159	}
160
161	return ret;
162	}
163
164	static int submit_fence_sync(const struct etnaviv_gem_submit *submit)
165	{
166	unsigned int context = submit->gpu->fence_context;
167	int i, ret = 0;
168
169	for (i = 0; i < submit->nr_bos; i++) {
170	struct etnaviv_gem_object *etnaviv_obj = submit->bos[i].obj;
171	bool write = submit->bos[i].flags & ETNA_SUBMIT_BO_WRITE;
426ef1bb	172	bool explicit = !!(submit->flags & ETNA_SUBMIT_NO_IMPLICIT);
a8c21a54	173
9ad59fea PZ	174	ret = etnaviv_gpu_fence_sync_obj(etnaviv_obj, context, write,
9ad59fea PZ	175	explicit);
a8c21a54 T	176	if (ret)
	177	break;
	178	}
	179
9efabd73 LS	180	if (submit->flags & ETNA_SUBMIT_FENCE_FD_IN) {
	181	/*
	182	* Wait if the fence is from a foreign context, or if the fence
	183	* array contains any fence from a foreign context.
	184	*/
	185	if (!dma_fence_match_context(submit->in_fence, context))
	186	ret = dma_fence_wait(submit->in_fence, true);
	187	}
	188
a8c21a54 T	189	return ret;
	190	}
	191
0236efe9 LS	192	static void submit_attach_object_fences(struct etnaviv_gem_submit *submit)
	193	{
	194	int i;
	195
	196	for (i = 0; i < submit->nr_bos; i++) {
	197	struct etnaviv_gem_object *etnaviv_obj = submit->bos[i].obj;
	198
	199	if (submit->bos[i].flags & ETNA_SUBMIT_BO_WRITE)
	200	reservation_object_add_excl_fence(etnaviv_obj->resv,
10009ea2	201	submit->out_fence);
0236efe9 LS	202	else
0236efe9 LS	203	reservation_object_add_shared_fence(etnaviv_obj->resv,
10009ea2	204	submit->out_fence);
0236efe9 LS	205
	206	submit_unlock_object(submit, i);
	207	}
	208	}
	209
a8c21a54 T	210	static int submit_pin_objects(struct etnaviv_gem_submit *submit)
	211	{
	212	int i, ret = 0;
	213
	214	for (i = 0; i < submit->nr_bos; i++) {
	215	struct etnaviv_gem_object *etnaviv_obj = submit->bos[i].obj;
b6325f40	216	struct etnaviv_vram_mapping *mapping;
a8c21a54	217
b6325f40 RK	218	mapping = etnaviv_gem_mapping_get(&etnaviv_obj->base,
	219	submit->gpu);
	220	if (IS_ERR(mapping)) {
	221	ret = PTR_ERR(mapping);
a8c21a54	222	break;
b6325f40	223	}
a8c21a54 T	224
a8c21a54 T	225	submit->bos[i].flags \|= BO_PINNED;
b6325f40	226	submit->bos[i].mapping = mapping;
a8c21a54 T	227	}
	228
	229	return ret;
	230	}
	231
	232	static int submit_bo(struct etnaviv_gem_submit *submit, u32 idx,
8779aa8f	233	struct etnaviv_gem_submit_bo **bo)
a8c21a54 T	234	{
	235	if (idx >= submit->nr_bos) {
	236	DRM_ERROR("invalid buffer index: %u (out of %u)\n",
	237	idx, submit->nr_bos);
	238	return -EINVAL;
	239	}
	240
8779aa8f	241	*bo = &submit->bos[idx];
a8c21a54 T	242
	243	return 0;
	244	}
	245
	246	/* process the reloc's and patch up the cmdstream as needed: */
	247	static int submit_reloc(struct etnaviv_gem_submit submit, void stream,
	248	u32 size, const struct drm_etnaviv_gem_submit_reloc *relocs,
	249	u32 nr_relocs)
	250	{
	251	u32 i, last_offset = 0;
	252	u32 *ptr = stream;
	253	int ret;
	254
	255	for (i = 0; i < nr_relocs; i++) {
	256	const struct drm_etnaviv_gem_submit_reloc *r = relocs + i;
8779aa8f RK	257	struct etnaviv_gem_submit_bo *bo;
8779aa8f RK	258	u32 off;
a8c21a54 T	259
	260	if (unlikely(r->flags)) {
	261	DRM_ERROR("invalid reloc flags\n");
	262	return -EINVAL;
	263	}
	264
	265	if (r->submit_offset % 4) {
	266	DRM_ERROR("non-aligned reloc offset: %u\n",
	267	r->submit_offset);
	268	return -EINVAL;
	269	}
	270
	271	/* offset in dwords: */
	272	off = r->submit_offset / 4;
	273
	274	if ((off >= size ) \|\|
	275	(off < last_offset)) {
	276	DRM_ERROR("invalid offset %u at reloc %u\n", off, i);
	277	return -EINVAL;
	278	}
	279
8779aa8f	280	ret = submit_bo(submit, r->reloc_idx, &bo);
a8c21a54 T	281	if (ret)
	282	return ret;
	283
d6f756e0 WL	284	if (r->reloc_offset > bo->obj->base.size - sizeof(*ptr)) {
d6f756e0 WL	285	DRM_ERROR("relocation %u outside object\n", i);
a8c21a54 T	286	return -EINVAL;
	287	}
	288
8779aa8f	289	ptr[off] = bo->mapping->iova + r->reloc_offset;
a8c21a54 T	290
	291	last_offset = off;
	292	}
	293
	294	return 0;
	295	}
	296
c8e4a7fd CG	297	static int submit_perfmon_validate(struct etnaviv_gem_submit *submit,
	298	struct etnaviv_cmdbuf *cmdbuf,
	299	const struct drm_etnaviv_gem_submit_pmr *pmrs,
	300	u32 nr_pms)
	301	{
	302	u32 i;
	303
	304	for (i = 0; i < nr_pms; i++) {
	305	const struct drm_etnaviv_gem_submit_pmr *r = pmrs + i;
	306	struct etnaviv_gem_submit_bo *bo;
	307	int ret;
	308
	309	ret = submit_bo(submit, r->read_idx, &bo);
	310	if (ret)
	311	return ret;
	312
	313	/* at offset 0 a sequence number gets stored used for userspace sync */
	314	if (r->read_offset == 0) {
	315	DRM_ERROR("perfmon request: offset is 0");
	316	return -EINVAL;
	317	}
	318
	319	if (r->read_offset >= bo->obj->base.size - sizeof(u32)) {
	320	DRM_ERROR("perfmon request: offset %u outside object", i);
	321	return -EINVAL;
	322	}
	323
	324	if (r->flags & ~(ETNA_PM_PROCESS_PRE \| ETNA_PM_PROCESS_POST)) {
	325	DRM_ERROR("perfmon request: flags are not valid");
	326	return -EINVAL;
	327	}
	328
	329	if (etnaviv_pm_req_validate(r, cmdbuf->exec_state)) {
	330	DRM_ERROR("perfmon request: domain or signal not valid");
	331	return -EINVAL;
	332	}
	333
	334	cmdbuf->pmrs[i].flags = r->flags;
	335	cmdbuf->pmrs[i].domain = r->domain;
	336	cmdbuf->pmrs[i].signal = r->signal;
	337	cmdbuf->pmrs[i].sequence = r->sequence;
	338	cmdbuf->pmrs[i].offset = r->read_offset;
	339	cmdbuf->pmrs[i].bo_vma = etnaviv_gem_vmap(&bo->obj->base);
	340	}
	341
	342	return 0;
	343	}
	344
a8c21a54 T	345	static void submit_cleanup(struct etnaviv_gem_submit *submit)
	346	{
	347	unsigned i;
	348
	349	for (i = 0; i < submit->nr_bos; i++) {
	350	struct etnaviv_gem_object *etnaviv_obj = submit->bos[i].obj;
	351
33a63e68 LS	352	/* unpin all objects */
	353	if (submit->bos[i].flags & BO_PINNED) {
	354	etnaviv_gem_mapping_unreference(submit->bos[i].mapping);
	355	submit->bos[i].mapping = NULL;
	356	submit->bos[i].flags &= ~BO_PINNED;
	357	}
	358
0236efe9	359	/* if the GPU submit failed, objects might still be locked */
a8c21a54	360	submit_unlock_object(submit, i);
23d1dd03	361	drm_gem_object_put_unlocked(&etnaviv_obj->base);
a8c21a54 T	362	}
	363
	364	ww_acquire_fini(&submit->ticket);
9efabd73 LS	365	if (submit->in_fence)
9efabd73 LS	366	dma_fence_put(submit->in_fence);
10009ea2 LS	367	if (submit->out_fence)
10009ea2 LS	368	dma_fence_put(submit->out_fence);
a8c21a54 T	369	kfree(submit);
	370	}
	371
	372	int etnaviv_ioctl_gem_submit(struct drm_device dev, void data,
	373	struct drm_file *file)
	374	{
	375	struct etnaviv_drm_private *priv = dev->dev_private;
	376	struct drm_etnaviv_gem_submit *args = data;
	377	struct drm_etnaviv_gem_submit_reloc *relocs;
c8e4a7fd	378	struct drm_etnaviv_gem_submit_pmr *pmrs;
a8c21a54 T	379	struct drm_etnaviv_gem_submit_bo *bos;
	380	struct etnaviv_gem_submit *submit;
	381	struct etnaviv_cmdbuf *cmdbuf;
	382	struct etnaviv_gpu *gpu;
78ec187f PZ	383	struct sync_file *sync_file = NULL;
78ec187f PZ	384	int out_fence_fd = -1;
a8c21a54 T	385	void *stream;
	386	int ret;
	387
	388	if (args->pipe >= ETNA_MAX_PIPES)
	389	return -EINVAL;
	390
	391	gpu = priv->gpu[args->pipe];
	392	if (!gpu)
	393	return -ENXIO;
	394
	395	if (args->stream_size % 4) {
	396	DRM_ERROR("non-aligned cmdstream buffer size: %u\n",
	397	args->stream_size);
	398	return -EINVAL;
	399	}
	400
	401	if (args->exec_state != ETNA_PIPE_3D &&
	402	args->exec_state != ETNA_PIPE_2D &&
	403	args->exec_state != ETNA_PIPE_VG) {
	404	DRM_ERROR("invalid exec_state: 0x%x\n", args->exec_state);
	405	return -EINVAL;
	406	}
	407
9ad59fea PZ	408	if (args->flags & ~ETNA_SUBMIT_FLAGS) {
	409	DRM_ERROR("invalid flags: 0x%x\n", args->flags);
	410	return -EINVAL;
	411	}
	412
a8c21a54 T	413	/*
	414	* Copy the command submission and bo array to kernel space in
	415	* one go, and do this outside of any locks.
	416	*/
2098105e MH	417	bos = kvmalloc_array(args->nr_bos, sizeof(*bos), GFP_KERNEL);
2098105e MH	418	relocs = kvmalloc_array(args->nr_relocs, sizeof(*relocs), GFP_KERNEL);
c8e4a7fd	419	pmrs = kvmalloc_array(args->nr_pmrs, sizeof(*pmrs), GFP_KERNEL);
2098105e	420	stream = kvmalloc_array(1, args->stream_size, GFP_KERNEL);
e66774dd LS	421	cmdbuf = etnaviv_cmdbuf_new(gpu->cmdbuf_suballoc,
e66774dd LS	422	ALIGN(args->stream_size, 8) + 8,
c8e4a7fd CG	423	args->nr_bos, args->nr_pmrs);
c8e4a7fd CG	424	if (!bos \|\| !relocs \|\| !pmrs \|\| !stream \|\| !cmdbuf) {
a8c21a54 T	425	ret = -ENOMEM;
	426	goto err_submit_cmds;
	427	}
	428
	429	cmdbuf->exec_state = args->exec_state;
	430	cmdbuf->ctx = file->driver_priv;
	431
3ed605bc	432	ret = copy_from_user(bos, u64_to_user_ptr(args->bos),
a8c21a54 T	433	args->nr_bos * sizeof(*bos));
	434	if (ret) {
	435	ret = -EFAULT;
	436	goto err_submit_cmds;
	437	}
	438
3ed605bc	439	ret = copy_from_user(relocs, u64_to_user_ptr(args->relocs),
a8c21a54 T	440	args->nr_relocs * sizeof(*relocs));
	441	if (ret) {
	442	ret = -EFAULT;
	443	goto err_submit_cmds;
	444	}
	445
c8e4a7fd CG	446	ret = copy_from_user(pmrs, u64_to_user_ptr(args->pmrs),
	447	args->nr_pmrs * sizeof(*pmrs));
	448	if (ret) {
	449	ret = -EFAULT;
	450	goto err_submit_cmds;
	451	}
	452	cmdbuf->nr_pmrs = args->nr_pmrs;
	453
3ed605bc	454	ret = copy_from_user(stream, u64_to_user_ptr(args->stream),
a8c21a54 T	455	args->stream_size);
	456	if (ret) {
	457	ret = -EFAULT;
	458	goto err_submit_cmds;
	459	}
	460
78ec187f PZ	461	if (args->flags & ETNA_SUBMIT_FENCE_FD_OUT) {
	462	out_fence_fd = get_unused_fd_flags(O_CLOEXEC);
	463	if (out_fence_fd < 0) {
	464	ret = out_fence_fd;
	465	goto err_submit_cmds;
	466	}
	467	}
	468
a8c21a54 T	469	submit = submit_create(dev, gpu, args->nr_bos);
	470	if (!submit) {
	471	ret = -ENOMEM;
	472	goto err_submit_cmds;
	473	}
	474
9ad59fea PZ	475	submit->flags = args->flags;
9ad59fea PZ	476
a8c21a54 T	477	ret = submit_lookup_objects(submit, file, bos, args->nr_bos);
	478	if (ret)
	479	goto err_submit_objects;
	480
	481	ret = submit_lock_objects(submit);
	482	if (ret)
	483	goto err_submit_objects;
	484
	485	if (!etnaviv_cmd_validate_one(gpu, stream, args->stream_size / 4,
	486	relocs, args->nr_relocs)) {
	487	ret = -EINVAL;
	488	goto err_submit_objects;
	489	}
	490
9ad59fea	491	if (args->flags & ETNA_SUBMIT_FENCE_FD_IN) {
9efabd73 LS	492	submit->in_fence = sync_file_get_fence(args->fence_fd);
9efabd73 LS	493	if (!submit->in_fence) {
9ad59fea PZ	494	ret = -EINVAL;
	495	goto err_submit_objects;
	496	}
9ad59fea PZ	497	}
9ad59fea PZ	498
a8c21a54 T	499	ret = submit_fence_sync(submit);
	500	if (ret)
	501	goto err_submit_objects;
	502
	503	ret = submit_pin_objects(submit);
	504	if (ret)
33a63e68	505	goto err_submit_objects;
a8c21a54 T	506
	507	ret = submit_reloc(submit, stream, args->stream_size / 4,
	508	relocs, args->nr_relocs);
	509	if (ret)
33a63e68	510	goto err_submit_objects;
a8c21a54	511
c8e4a7fd CG	512	ret = submit_perfmon_validate(submit, cmdbuf, pmrs, args->nr_pmrs);
c8e4a7fd CG	513	if (ret)
33a63e68	514	goto err_submit_objects;
c8e4a7fd	515
a8c21a54 T	516	memcpy(cmdbuf->vaddr, stream, args->stream_size);
	517	cmdbuf->user_size = ALIGN(args->stream_size, 8);
	518
	519	ret = etnaviv_gpu_submit(gpu, submit, cmdbuf);
5a642e6b	520	if (ret)
33a63e68	521	goto err_submit_objects;
5a642e6b	522
0236efe9 LS	523	submit_attach_object_fences(submit);
0236efe9 LS	524
5a642e6b	525	cmdbuf = NULL;
a8c21a54	526
78ec187f PZ	527	if (args->flags & ETNA_SUBMIT_FENCE_FD_OUT) {
	528	/*
	529	* This can be improved: ideally we want to allocate the sync
	530	* file before kicking off the GPU job and just attach the
	531	* fence to the sync file here, eliminating the ENOMEM
	532	* possibility at this stage.
	533	*/
10009ea2	534	sync_file = sync_file_create(submit->out_fence);
78ec187f PZ	535	if (!sync_file) {
78ec187f PZ	536	ret = -ENOMEM;
33a63e68	537	goto err_submit_objects;
78ec187f PZ	538	}
	539	fd_install(out_fence_fd, sync_file->file);
	540	}
	541
	542	args->fence_fd = out_fence_fd;
10009ea2	543	args->fence = submit->out_fence->seqno;
a8c21a54	544
a8c21a54 T	545	err_submit_objects:
	546	submit_cleanup(submit);
	547
	548	err_submit_cmds:
78ec187f PZ	549	if (ret && (out_fence_fd >= 0))
78ec187f PZ	550	put_unused_fd(out_fence_fd);
a8c21a54 T	551	/* if we still own the cmdbuf */
a8c21a54 T	552	if (cmdbuf)
ea1f5729	553	etnaviv_cmdbuf_free(cmdbuf);
a8c21a54	554	if (stream)
2098105e	555	kvfree(stream);
a8c21a54	556	if (bos)
2098105e	557	kvfree(bos);
a8c21a54	558	if (relocs)
2098105e	559	kvfree(relocs);
c8e4a7fd CG	560	if (pmrs)
c8e4a7fd CG	561	kvfree(pmrs);
a8c21a54 T	562
	563	return ret;
	564	}