[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;

	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,
		struct ww_acquire_ctx *ticket)
{
	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,
							  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 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,
						       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);
	}

	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;
	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);
	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;
		}
	}

	ww_acquire_init(&ticket, &reservation_ww_class);

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

	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, &ticket);
	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_ww_acquire:
	ww_acquire_fini(&ticket);

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
a8c21a54 T	47	return submit;
	48	}
	49
	50	static int submit_lookup_objects(struct etnaviv_gem_submit *submit,
	51	struct drm_file file, struct drm_etnaviv_gem_submit_bo submit_bos,
	52	unsigned nr_bos)
	53	{
	54	struct drm_etnaviv_gem_submit_bo *bo;
	55	unsigned i;
	56	int ret = 0;
	57
	58	spin_lock(&file->table_lock);
	59
	60	for (i = 0, bo = submit_bos; i < nr_bos; i++, bo++) {
	61	struct drm_gem_object *obj;
	62
	63	if (bo->flags & BO_INVALID_FLAGS) {
	64	DRM_ERROR("invalid flags: %x\n", bo->flags);
	65	ret = -EINVAL;
	66	goto out_unlock;
	67	}
	68
	69	submit->bos[i].flags = bo->flags;
	70
	71	/* normally use drm_gem_object_lookup(), but for bulk lookup
	72	* all under single table_lock just hit object_idr directly:
	73	*/
	74	obj = idr_find(&file->object_idr, bo->handle);
	75	if (!obj) {
	76	DRM_ERROR("invalid handle %u at index %u\n",
	77	bo->handle, i);
	78	ret = -EINVAL;
	79	goto out_unlock;
	80	}
	81
	82	/*
	83	* Take a refcount on the object. The file table lock
	84	* prevents the object_idr's refcount on this being dropped.
	85	*/
23d1dd03	86	drm_gem_object_get(obj);
a8c21a54 T	87
	88	submit->bos[i].obj = to_etnaviv_bo(obj);
	89	}
	90
	91	out_unlock:
	92	submit->nr_bos = i;
	93	spin_unlock(&file->table_lock);
	94
	95	return ret;
	96	}
	97
	98	static void submit_unlock_object(struct etnaviv_gem_submit *submit, int i)
	99	{
	100	if (submit->bos[i].flags & BO_LOCKED) {
	101	struct etnaviv_gem_object *etnaviv_obj = submit->bos[i].obj;
	102
	103	ww_mutex_unlock(&etnaviv_obj->resv->lock);
	104	submit->bos[i].flags &= ~BO_LOCKED;
	105	}
	106	}
	107
08301d73 LS	108	static int submit_lock_objects(struct etnaviv_gem_submit *submit,
08301d73 LS	109	struct ww_acquire_ctx *ticket)
a8c21a54 T	110	{
	111	int contended, slow_locked = -1, i, ret = 0;
	112
	113	retry:
	114	for (i = 0; i < submit->nr_bos; i++) {
	115	struct etnaviv_gem_object *etnaviv_obj = submit->bos[i].obj;
	116
	117	if (slow_locked == i)
	118	slow_locked = -1;
	119
	120	contended = i;
	121
	122	if (!(submit->bos[i].flags & BO_LOCKED)) {
	123	ret = ww_mutex_lock_interruptible(&etnaviv_obj->resv->lock,
08301d73	124	ticket);
a8c21a54 T	125	if (ret == -EALREADY)
	126	DRM_ERROR("BO at index %u already on submit list\n",
	127	i);
	128	if (ret)
	129	goto fail;
	130	submit->bos[i].flags \|= BO_LOCKED;
	131	}
	132	}
	133
08301d73	134	ww_acquire_done(ticket);
a8c21a54 T	135
	136	return 0;
	137
	138	fail:
	139	for (; i >= 0; i--)
	140	submit_unlock_object(submit, i);
	141
	142	if (slow_locked > 0)
	143	submit_unlock_object(submit, slow_locked);
	144
	145	if (ret == -EDEADLK) {
	146	struct etnaviv_gem_object *etnaviv_obj;
	147
	148	etnaviv_obj = submit->bos[contended].obj;
	149
	150	/* we lost out in a seqno race, lock and retry.. */
	151	ret = ww_mutex_lock_slow_interruptible(&etnaviv_obj->resv->lock,
08301d73	152	ticket);
a8c21a54 T	153	if (!ret) {
	154	submit->bos[contended].flags \|= BO_LOCKED;
	155	slow_locked = contended;
	156	goto retry;
	157	}
	158	}
	159
	160	return ret;
	161	}
	162
	163	static int submit_fence_sync(const struct etnaviv_gem_submit *submit)
	164	{
	165	unsigned int context = submit->gpu->fence_context;
	166	int i, ret = 0;
	167
	168	for (i = 0; i < submit->nr_bos; i++) {
	169	struct etnaviv_gem_object *etnaviv_obj = submit->bos[i].obj;
	170	bool write = submit->bos[i].flags & ETNA_SUBMIT_BO_WRITE;
426ef1bb	171	bool explicit = !!(submit->flags & ETNA_SUBMIT_NO_IMPLICIT);
a8c21a54	172
9ad59fea PZ	173	ret = etnaviv_gpu_fence_sync_obj(etnaviv_obj, context, write,
9ad59fea PZ	174	explicit);
a8c21a54 T	175	if (ret)
	176	break;
	177	}
	178
9efabd73 LS	179	if (submit->flags & ETNA_SUBMIT_FENCE_FD_IN) {
	180	/*
	181	* Wait if the fence is from a foreign context, or if the fence
	182	* array contains any fence from a foreign context.
	183	*/
	184	if (!dma_fence_match_context(submit->in_fence, context))
	185	ret = dma_fence_wait(submit->in_fence, true);
	186	}
	187
a8c21a54 T	188	return ret;
	189	}
	190
0236efe9 LS	191	static void submit_attach_object_fences(struct etnaviv_gem_submit *submit)
	192	{
	193	int i;
	194
	195	for (i = 0; i < submit->nr_bos; i++) {
	196	struct etnaviv_gem_object *etnaviv_obj = submit->bos[i].obj;
	197
	198	if (submit->bos[i].flags & ETNA_SUBMIT_BO_WRITE)
	199	reservation_object_add_excl_fence(etnaviv_obj->resv,
10009ea2	200	submit->out_fence);
0236efe9 LS	201	else
0236efe9 LS	202	reservation_object_add_shared_fence(etnaviv_obj->resv,
10009ea2	203	submit->out_fence);
0236efe9 LS	204
	205	submit_unlock_object(submit, i);
	206	}
	207	}
	208
a8c21a54 T	209	static int submit_pin_objects(struct etnaviv_gem_submit *submit)
	210	{
	211	int i, ret = 0;
	212
	213	for (i = 0; i < submit->nr_bos; i++) {
	214	struct etnaviv_gem_object *etnaviv_obj = submit->bos[i].obj;
b6325f40	215	struct etnaviv_vram_mapping *mapping;
a8c21a54	216
b6325f40 RK	217	mapping = etnaviv_gem_mapping_get(&etnaviv_obj->base,
	218	submit->gpu);
	219	if (IS_ERR(mapping)) {
	220	ret = PTR_ERR(mapping);
a8c21a54	221	break;
b6325f40	222	}
a8c21a54 T	223
a8c21a54 T	224	submit->bos[i].flags \|= BO_PINNED;
b6325f40	225	submit->bos[i].mapping = mapping;
a8c21a54 T	226	}
	227
	228	return ret;
	229	}
	230
	231	static int submit_bo(struct etnaviv_gem_submit *submit, u32 idx,
8779aa8f	232	struct etnaviv_gem_submit_bo **bo)
a8c21a54 T	233	{
	234	if (idx >= submit->nr_bos) {
	235	DRM_ERROR("invalid buffer index: %u (out of %u)\n",
	236	idx, submit->nr_bos);
	237	return -EINVAL;
	238	}
	239
8779aa8f	240	*bo = &submit->bos[idx];
a8c21a54 T	241
	242	return 0;
	243	}
	244
	245	/* process the reloc's and patch up the cmdstream as needed: */
	246	static int submit_reloc(struct etnaviv_gem_submit submit, void stream,
	247	u32 size, const struct drm_etnaviv_gem_submit_reloc *relocs,
	248	u32 nr_relocs)
	249	{
	250	u32 i, last_offset = 0;
	251	u32 *ptr = stream;
	252	int ret;
	253
	254	for (i = 0; i < nr_relocs; i++) {
	255	const struct drm_etnaviv_gem_submit_reloc *r = relocs + i;
8779aa8f RK	256	struct etnaviv_gem_submit_bo *bo;
8779aa8f RK	257	u32 off;
a8c21a54 T	258
	259	if (unlikely(r->flags)) {
	260	DRM_ERROR("invalid reloc flags\n");
	261	return -EINVAL;
	262	}
	263
	264	if (r->submit_offset % 4) {
	265	DRM_ERROR("non-aligned reloc offset: %u\n",
	266	r->submit_offset);
	267	return -EINVAL;
	268	}
	269
	270	/* offset in dwords: */
	271	off = r->submit_offset / 4;
	272
	273	if ((off >= size ) \|\|
	274	(off < last_offset)) {
	275	DRM_ERROR("invalid offset %u at reloc %u\n", off, i);
	276	return -EINVAL;
	277	}
	278
8779aa8f	279	ret = submit_bo(submit, r->reloc_idx, &bo);
a8c21a54 T	280	if (ret)
	281	return ret;
	282
d6f756e0 WL	283	if (r->reloc_offset > bo->obj->base.size - sizeof(*ptr)) {
d6f756e0 WL	284	DRM_ERROR("relocation %u outside object\n", i);
a8c21a54 T	285	return -EINVAL;
	286	}
	287
8779aa8f	288	ptr[off] = bo->mapping->iova + r->reloc_offset;
a8c21a54 T	289
	290	last_offset = off;
	291	}
	292
	293	return 0;
	294	}
	295
c8e4a7fd CG	296	static int submit_perfmon_validate(struct etnaviv_gem_submit *submit,
	297	struct etnaviv_cmdbuf *cmdbuf,
	298	const struct drm_etnaviv_gem_submit_pmr *pmrs,
	299	u32 nr_pms)
	300	{
	301	u32 i;
	302
	303	for (i = 0; i < nr_pms; i++) {
	304	const struct drm_etnaviv_gem_submit_pmr *r = pmrs + i;
	305	struct etnaviv_gem_submit_bo *bo;
	306	int ret;
	307
	308	ret = submit_bo(submit, r->read_idx, &bo);
	309	if (ret)
	310	return ret;
	311
	312	/* at offset 0 a sequence number gets stored used for userspace sync */
	313	if (r->read_offset == 0) {
	314	DRM_ERROR("perfmon request: offset is 0");
	315	return -EINVAL;
	316	}
	317
	318	if (r->read_offset >= bo->obj->base.size - sizeof(u32)) {
	319	DRM_ERROR("perfmon request: offset %u outside object", i);
	320	return -EINVAL;
	321	}
	322
	323	if (r->flags & ~(ETNA_PM_PROCESS_PRE \| ETNA_PM_PROCESS_POST)) {
	324	DRM_ERROR("perfmon request: flags are not valid");
	325	return -EINVAL;
	326	}
	327
	328	if (etnaviv_pm_req_validate(r, cmdbuf->exec_state)) {
	329	DRM_ERROR("perfmon request: domain or signal not valid");
	330	return -EINVAL;
	331	}
	332
	333	cmdbuf->pmrs[i].flags = r->flags;
	334	cmdbuf->pmrs[i].domain = r->domain;
	335	cmdbuf->pmrs[i].signal = r->signal;
	336	cmdbuf->pmrs[i].sequence = r->sequence;
	337	cmdbuf->pmrs[i].offset = r->read_offset;
	338	cmdbuf->pmrs[i].bo_vma = etnaviv_gem_vmap(&bo->obj->base);
	339	}
	340
	341	return 0;
	342	}
	343
a8c21a54 T	344	static void submit_cleanup(struct etnaviv_gem_submit *submit)
	345	{
	346	unsigned i;
	347
	348	for (i = 0; i < submit->nr_bos; i++) {
	349	struct etnaviv_gem_object *etnaviv_obj = submit->bos[i].obj;
	350
33a63e68 LS	351	/* unpin all objects */
	352	if (submit->bos[i].flags & BO_PINNED) {
	353	etnaviv_gem_mapping_unreference(submit->bos[i].mapping);
	354	submit->bos[i].mapping = NULL;
	355	submit->bos[i].flags &= ~BO_PINNED;
	356	}
	357
0236efe9	358	/* if the GPU submit failed, objects might still be locked */
a8c21a54	359	submit_unlock_object(submit, i);
23d1dd03	360	drm_gem_object_put_unlocked(&etnaviv_obj->base);
a8c21a54 T	361	}
a8c21a54 T	362
9efabd73 LS	363	if (submit->in_fence)
9efabd73 LS	364	dma_fence_put(submit->in_fence);
10009ea2 LS	365	if (submit->out_fence)
10009ea2 LS	366	dma_fence_put(submit->out_fence);
a8c21a54 T	367	kfree(submit);
	368	}
	369
	370	int etnaviv_ioctl_gem_submit(struct drm_device dev, void data,
	371	struct drm_file *file)
	372	{
	373	struct etnaviv_drm_private *priv = dev->dev_private;
	374	struct drm_etnaviv_gem_submit *args = data;
	375	struct drm_etnaviv_gem_submit_reloc *relocs;
c8e4a7fd	376	struct drm_etnaviv_gem_submit_pmr *pmrs;
a8c21a54 T	377	struct drm_etnaviv_gem_submit_bo *bos;
	378	struct etnaviv_gem_submit *submit;
	379	struct etnaviv_cmdbuf *cmdbuf;
	380	struct etnaviv_gpu *gpu;
78ec187f	381	struct sync_file *sync_file = NULL;
08301d73	382	struct ww_acquire_ctx ticket;
78ec187f	383	int out_fence_fd = -1;
a8c21a54 T	384	void *stream;
	385	int ret;
	386
	387	if (args->pipe >= ETNA_MAX_PIPES)
	388	return -EINVAL;
	389
	390	gpu = priv->gpu[args->pipe];
	391	if (!gpu)
	392	return -ENXIO;
	393
	394	if (args->stream_size % 4) {
	395	DRM_ERROR("non-aligned cmdstream buffer size: %u\n",
	396	args->stream_size);
	397	return -EINVAL;
	398	}
	399
	400	if (args->exec_state != ETNA_PIPE_3D &&
	401	args->exec_state != ETNA_PIPE_2D &&
	402	args->exec_state != ETNA_PIPE_VG) {
	403	DRM_ERROR("invalid exec_state: 0x%x\n", args->exec_state);
	404	return -EINVAL;
	405	}
	406
9ad59fea PZ	407	if (args->flags & ~ETNA_SUBMIT_FLAGS) {
	408	DRM_ERROR("invalid flags: 0x%x\n", args->flags);
	409	return -EINVAL;
	410	}
	411
a8c21a54 T	412	/*
	413	* Copy the command submission and bo array to kernel space in
	414	* one go, and do this outside of any locks.
	415	*/
2098105e MH	416	bos = kvmalloc_array(args->nr_bos, sizeof(*bos), GFP_KERNEL);
2098105e MH	417	relocs = kvmalloc_array(args->nr_relocs, sizeof(*relocs), GFP_KERNEL);
c8e4a7fd	418	pmrs = kvmalloc_array(args->nr_pmrs, sizeof(*pmrs), GFP_KERNEL);
2098105e	419	stream = kvmalloc_array(1, args->stream_size, GFP_KERNEL);
e66774dd LS	420	cmdbuf = etnaviv_cmdbuf_new(gpu->cmdbuf_suballoc,
e66774dd LS	421	ALIGN(args->stream_size, 8) + 8,
c8e4a7fd CG	422	args->nr_bos, args->nr_pmrs);
c8e4a7fd CG	423	if (!bos \|\| !relocs \|\| !pmrs \|\| !stream \|\| !cmdbuf) {
a8c21a54 T	424	ret = -ENOMEM;
	425	goto err_submit_cmds;
	426	}
	427
	428	cmdbuf->exec_state = args->exec_state;
	429	cmdbuf->ctx = file->driver_priv;
	430
3ed605bc	431	ret = copy_from_user(bos, u64_to_user_ptr(args->bos),
a8c21a54 T	432	args->nr_bos * sizeof(*bos));
	433	if (ret) {
	434	ret = -EFAULT;
	435	goto err_submit_cmds;
	436	}
	437
3ed605bc	438	ret = copy_from_user(relocs, u64_to_user_ptr(args->relocs),
a8c21a54 T	439	args->nr_relocs * sizeof(*relocs));
	440	if (ret) {
	441	ret = -EFAULT;
	442	goto err_submit_cmds;
	443	}
	444
c8e4a7fd CG	445	ret = copy_from_user(pmrs, u64_to_user_ptr(args->pmrs),
	446	args->nr_pmrs * sizeof(*pmrs));
	447	if (ret) {
	448	ret = -EFAULT;
	449	goto err_submit_cmds;
	450	}
	451	cmdbuf->nr_pmrs = args->nr_pmrs;
	452
3ed605bc	453	ret = copy_from_user(stream, u64_to_user_ptr(args->stream),
a8c21a54 T	454	args->stream_size);
	455	if (ret) {
	456	ret = -EFAULT;
	457	goto err_submit_cmds;
	458	}
	459
78ec187f PZ	460	if (args->flags & ETNA_SUBMIT_FENCE_FD_OUT) {
	461	out_fence_fd = get_unused_fd_flags(O_CLOEXEC);
	462	if (out_fence_fd < 0) {
	463	ret = out_fence_fd;
	464	goto err_submit_cmds;
	465	}
	466	}
	467
08301d73 LS	468	ww_acquire_init(&ticket, &reservation_ww_class);
08301d73 LS	469
a8c21a54 T	470	submit = submit_create(dev, gpu, args->nr_bos);
	471	if (!submit) {
	472	ret = -ENOMEM;
08301d73	473	goto err_submit_ww_acquire;
a8c21a54 T	474	}
a8c21a54 T	475
9ad59fea PZ	476	submit->flags = args->flags;
9ad59fea PZ	477
a8c21a54 T	478	ret = submit_lookup_objects(submit, file, bos, args->nr_bos);
	479	if (ret)
	480	goto err_submit_objects;
	481
08301d73	482	ret = submit_lock_objects(submit, &ticket);
a8c21a54 T	483	if (ret)
	484	goto err_submit_objects;
	485
	486	if (!etnaviv_cmd_validate_one(gpu, stream, args->stream_size / 4,
	487	relocs, args->nr_relocs)) {
	488	ret = -EINVAL;
	489	goto err_submit_objects;
	490	}
	491
9ad59fea	492	if (args->flags & ETNA_SUBMIT_FENCE_FD_IN) {
9efabd73 LS	493	submit->in_fence = sync_file_get_fence(args->fence_fd);
9efabd73 LS	494	if (!submit->in_fence) {
9ad59fea PZ	495	ret = -EINVAL;
	496	goto err_submit_objects;
	497	}
9ad59fea PZ	498	}
9ad59fea PZ	499
a8c21a54 T	500	ret = submit_fence_sync(submit);
	501	if (ret)
	502	goto err_submit_objects;
	503
	504	ret = submit_pin_objects(submit);
	505	if (ret)
33a63e68	506	goto err_submit_objects;
a8c21a54 T	507
	508	ret = submit_reloc(submit, stream, args->stream_size / 4,
	509	relocs, args->nr_relocs);
	510	if (ret)
33a63e68	511	goto err_submit_objects;
a8c21a54	512
c8e4a7fd CG	513	ret = submit_perfmon_validate(submit, cmdbuf, pmrs, args->nr_pmrs);
c8e4a7fd CG	514	if (ret)
33a63e68	515	goto err_submit_objects;
c8e4a7fd	516
a8c21a54 T	517	memcpy(cmdbuf->vaddr, stream, args->stream_size);
	518	cmdbuf->user_size = ALIGN(args->stream_size, 8);
	519
	520	ret = etnaviv_gpu_submit(gpu, submit, cmdbuf);
5a642e6b	521	if (ret)
33a63e68	522	goto err_submit_objects;
5a642e6b	523
0236efe9 LS	524	submit_attach_object_fences(submit);
0236efe9 LS	525
5a642e6b	526	cmdbuf = NULL;
a8c21a54	527
78ec187f PZ	528	if (args->flags & ETNA_SUBMIT_FENCE_FD_OUT) {
	529	/*
	530	* This can be improved: ideally we want to allocate the sync
	531	* file before kicking off the GPU job and just attach the
	532	* fence to the sync file here, eliminating the ENOMEM
	533	* possibility at this stage.
	534	*/
10009ea2	535	sync_file = sync_file_create(submit->out_fence);
78ec187f PZ	536	if (!sync_file) {
78ec187f PZ	537	ret = -ENOMEM;
33a63e68	538	goto err_submit_objects;
78ec187f PZ	539	}
	540	fd_install(out_fence_fd, sync_file->file);
	541	}
	542
	543	args->fence_fd = out_fence_fd;
10009ea2	544	args->fence = submit->out_fence->seqno;
a8c21a54	545
a8c21a54 T	546	err_submit_objects:
	547	submit_cleanup(submit);
	548
08301d73 LS	549	err_submit_ww_acquire:
	550	ww_acquire_fini(&ticket);
	551
a8c21a54	552	err_submit_cmds:
78ec187f PZ	553	if (ret && (out_fence_fd >= 0))
78ec187f PZ	554	put_unused_fd(out_fence_fd);
a8c21a54 T	555	/* if we still own the cmdbuf */
a8c21a54 T	556	if (cmdbuf)
ea1f5729	557	etnaviv_cmdbuf_free(cmdbuf);
a8c21a54	558	if (stream)
2098105e	559	kvfree(stream);
a8c21a54	560	if (bos)
2098105e	561	kvfree(bos);
a8c21a54	562	if (relocs)
2098105e	563	kvfree(relocs);
c8e4a7fd CG	564	if (pmrs)
c8e4a7fd CG	565	kvfree(pmrs);
a8c21a54 T	566
	567	return ret;
	568	}