[mirror_ubuntu-bionic-kernel.git] / drivers / gpu / drm / radeon / radeon_cs.c

/*
 * Copyright 2008 Jerome Glisse.
 * All Rights Reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 *
 * Authors:
 *    Jerome Glisse <glisse@freedesktop.org>
 */
#include "drmP.h"
#include "radeon_drm.h"
#include "radeon_reg.h"
#include "radeon.h"

void r100_cs_dump_packet(struct radeon_cs_parser *p,
			 struct radeon_cs_packet *pkt);

int radeon_cs_parser_relocs(struct radeon_cs_parser *p)
{
	struct drm_device *ddev = p->rdev->ddev;
	struct radeon_cs_chunk *chunk;
	unsigned i, j;
	bool duplicate;

	if (p->chunk_relocs_idx == -1) {
		return 0;
	}
	chunk = &p->chunks[p->chunk_relocs_idx];
	/* FIXME: we assume that each relocs use 4 dwords */
	p->nrelocs = chunk->length_dw / 4;
	p->relocs_ptr = kcalloc(p->nrelocs, sizeof(void *), GFP_KERNEL);
	if (p->relocs_ptr == NULL) {
		return -ENOMEM;
	}
	p->relocs = kcalloc(p->nrelocs, sizeof(struct radeon_cs_reloc), GFP_KERNEL);
	if (p->relocs == NULL) {
		return -ENOMEM;
	}
	for (i = 0; i < p->nrelocs; i++) {
		struct drm_radeon_cs_reloc *r;

		duplicate = false;
		r = (struct drm_radeon_cs_reloc *)&chunk->kdata[i*4];
		for (j = 0; j < i; j++) {
			if (r->handle == p->relocs[j].handle) {
				p->relocs_ptr[i] = &p->relocs[j];
				duplicate = true;
				break;
			}
		}
		if (!duplicate) {
			p->relocs[i].gobj = drm_gem_object_lookup(ddev,
								  p->filp,
								  r->handle);
			if (p->relocs[i].gobj == NULL) {
				DRM_ERROR("gem object lookup failed 0x%x\n",
					  r->handle);
				return -ENOENT;
			}
			p->relocs_ptr[i] = &p->relocs[i];
			p->relocs[i].robj = gem_to_radeon_bo(p->relocs[i].gobj);
			p->relocs[i].lobj.bo = p->relocs[i].robj;
			p->relocs[i].lobj.wdomain = r->write_domain;
			p->relocs[i].lobj.rdomain = r->read_domains;
			p->relocs[i].lobj.tv.bo = &p->relocs[i].robj->tbo;
			p->relocs[i].handle = r->handle;
			p->relocs[i].flags = r->flags;
			radeon_bo_list_add_object(&p->relocs[i].lobj,
						  &p->validated);
		} else
			p->relocs[i].handle = 0;
	}
	return radeon_bo_list_validate(&p->validated);
}

int radeon_cs_parser_init(struct radeon_cs_parser *p, void *data)
{
	struct drm_radeon_cs *cs = data;
	uint64_t *chunk_array_ptr;
	unsigned size, i, flags = 0;

	if (!cs->num_chunks) {
		return 0;
	}
	/* get chunks */
	INIT_LIST_HEAD(&p->validated);
	p->idx = 0;
	p->chunk_ib_idx = -1;
	p->chunk_relocs_idx = -1;
	p->chunks_array = kcalloc(cs->num_chunks, sizeof(uint64_t), GFP_KERNEL);
	if (p->chunks_array == NULL) {
		return -ENOMEM;
	}
	chunk_array_ptr = (uint64_t *)(unsigned long)(cs->chunks);
	if (DRM_COPY_FROM_USER(p->chunks_array, chunk_array_ptr,
			       sizeof(uint64_t)*cs->num_chunks)) {
		return -EFAULT;
	}
	p->nchunks = cs->num_chunks;
	p->chunks = kcalloc(p->nchunks, sizeof(struct radeon_cs_chunk), GFP_KERNEL);
	if (p->chunks == NULL) {
		return -ENOMEM;
	}
	for (i = 0; i < p->nchunks; i++) {
		struct drm_radeon_cs_chunk __user **chunk_ptr = NULL;
		struct drm_radeon_cs_chunk user_chunk;
		uint32_t __user *cdata;

		chunk_ptr = (void __user*)(unsigned long)p->chunks_array[i];
		if (DRM_COPY_FROM_USER(&user_chunk, chunk_ptr,
				       sizeof(struct drm_radeon_cs_chunk))) {
			return -EFAULT;
		}
		p->chunks[i].length_dw = user_chunk.length_dw;
		p->chunks[i].kdata = NULL;
		p->chunks[i].chunk_id = user_chunk.chunk_id;

		if (p->chunks[i].chunk_id == RADEON_CHUNK_ID_RELOCS) {
			p->chunk_relocs_idx = i;
		}
		if (p->chunks[i].chunk_id == RADEON_CHUNK_ID_IB) {
			p->chunk_ib_idx = i;
			/* zero length IB isn't useful */
			if (p->chunks[i].length_dw == 0)
				return -EINVAL;
		}
		if (p->chunks[i].chunk_id == RADEON_CHUNK_ID_FLAGS &&
		    !p->chunks[i].length_dw) {
			return -EINVAL;
		}

		p->chunks[i].length_dw = user_chunk.length_dw;
		p->chunks[i].user_ptr = (void __user *)(unsigned long)user_chunk.chunk_data;

		cdata = (uint32_t *)(unsigned long)user_chunk.chunk_data;
		if (p->chunks[i].chunk_id != RADEON_CHUNK_ID_IB) {
			size = p->chunks[i].length_dw * sizeof(uint32_t);
			p->chunks[i].kdata = kmalloc(size, GFP_KERNEL);
			if (p->chunks[i].kdata == NULL) {
				return -ENOMEM;
			}
			if (DRM_COPY_FROM_USER(p->chunks[i].kdata,
					       p->chunks[i].user_ptr, size)) {
				return -EFAULT;
			}
			if (p->chunks[i].chunk_id == RADEON_CHUNK_ID_FLAGS) {
				flags = p->chunks[i].kdata[0];
			}
		} else {
			p->chunks[i].kpage[0] = kmalloc(PAGE_SIZE, GFP_KERNEL);
			p->chunks[i].kpage[1] = kmalloc(PAGE_SIZE, GFP_KERNEL);
			if (p->chunks[i].kpage[0] == NULL || p->chunks[i].kpage[1] == NULL) {
				kfree(p->chunks[i].kpage[0]);
				kfree(p->chunks[i].kpage[1]);
				return -ENOMEM;
			}
			p->chunks[i].kpage_idx[0] = -1;
			p->chunks[i].kpage_idx[1] = -1;
			p->chunks[i].last_copied_page = -1;
			p->chunks[i].last_page_index = ((p->chunks[i].length_dw * 4) - 1) / PAGE_SIZE;
		}
	}
	if (p->chunks[p->chunk_ib_idx].length_dw > (16 * 1024)) {
		DRM_ERROR("cs IB too big: %d\n",
			  p->chunks[p->chunk_ib_idx].length_dw);
		return -EINVAL;
	}

	p->keep_tiling_flags = (flags & RADEON_CS_KEEP_TILING_FLAGS) != 0;
	return 0;
}

/**
 * cs_parser_fini() - clean parser states
 * @parser:	parser structure holding parsing context.
 * @error:	error number
 *
 * If error is set than unvalidate buffer, otherwise just free memory
 * used by parsing context.
 **/
static void radeon_cs_parser_fini(struct radeon_cs_parser *parser, int error)
{
	unsigned i;


	if (!error && parser->ib)
		ttm_eu_fence_buffer_objects(&parser->validated,
					    parser->ib->fence);
	else
		ttm_eu_backoff_reservation(&parser->validated);

	if (parser->relocs != NULL) {
		for (i = 0; i < parser->nrelocs; i++) {
			if (parser->relocs[i].gobj)
				drm_gem_object_unreference_unlocked(parser->relocs[i].gobj);
		}
	}
	kfree(parser->track);
	kfree(parser->relocs);
	kfree(parser->relocs_ptr);
	for (i = 0; i < parser->nchunks; i++) {
		kfree(parser->chunks[i].kdata);
		kfree(parser->chunks[i].kpage[0]);
		kfree(parser->chunks[i].kpage[1]);
	}
	kfree(parser->chunks);
	kfree(parser->chunks_array);
	radeon_ib_free(parser->rdev, &parser->ib);
}

int radeon_cs_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
{
	struct radeon_device *rdev = dev->dev_private;
	struct radeon_cs_parser parser;
	struct radeon_cs_chunk *ib_chunk;
	int r;

	radeon_mutex_lock(&rdev->cs_mutex);
	/* initialize parser */
	memset(&parser, 0, sizeof(struct radeon_cs_parser));
	parser.filp = filp;
	parser.rdev = rdev;
	parser.dev = rdev->dev;
	parser.family = rdev->family;
	r = radeon_cs_parser_init(&parser, data);
	if (r) {
		DRM_ERROR("Failed to initialize parser !\n");
		radeon_cs_parser_fini(&parser, r);
		radeon_mutex_unlock(&rdev->cs_mutex);
		return r;
	}
	ib_chunk = &parser.chunks[parser.chunk_ib_idx];
	r =  radeon_ib_get(rdev, RADEON_RING_TYPE_GFX_INDEX, &parser.ib,
			   ib_chunk->length_dw * 4);
	if (r) {
		DRM_ERROR("Failed to get ib !\n");
		radeon_cs_parser_fini(&parser, r);
		radeon_mutex_unlock(&rdev->cs_mutex);
		return r;
	}
	r = radeon_cs_parser_relocs(&parser);
	if (r) {
		if (r != -ERESTARTSYS)
			DRM_ERROR("Failed to parse relocation %d!\n", r);
		radeon_cs_parser_fini(&parser, r);
		radeon_mutex_unlock(&rdev->cs_mutex);
		return r;
	}
	/* Copy the packet into the IB, the parser will read from the
	 * input memory (cached) and write to the IB (which can be
	 * uncached). */
	parser.ib->length_dw = ib_chunk->length_dw;
	r = radeon_cs_parse(&parser);
	if (r || parser.parser_error) {
		DRM_ERROR("Invalid command stream !\n");
		radeon_cs_parser_fini(&parser, r);
		radeon_mutex_unlock(&rdev->cs_mutex);
		return r;
	}
	r = radeon_cs_finish_pages(&parser);
	if (r) {
		DRM_ERROR("Invalid command stream !\n");
		radeon_cs_parser_fini(&parser, r);
		radeon_mutex_unlock(&rdev->cs_mutex);
		return r;
	}
	r = radeon_ib_schedule(rdev, parser.ib);
	if (r) {
		DRM_ERROR("Failed to schedule IB !\n");
	}
	radeon_cs_parser_fini(&parser, r);
	radeon_mutex_unlock(&rdev->cs_mutex);
	return r;
}

int radeon_cs_finish_pages(struct radeon_cs_parser *p)
{
	struct radeon_cs_chunk *ibc = &p->chunks[p->chunk_ib_idx];
	int i;
	int size = PAGE_SIZE;

	for (i = ibc->last_copied_page + 1; i <= ibc->last_page_index; i++) {
		if (i == ibc->last_page_index) {
			size = (ibc->length_dw * 4) % PAGE_SIZE;
			if (size == 0)
				size = PAGE_SIZE;
		}
		
		if (DRM_COPY_FROM_USER(p->ib->ptr + (i * (PAGE_SIZE/4)),
				       ibc->user_ptr + (i * PAGE_SIZE),
				       size))
			return -EFAULT;
	}
	return 0;
}

int radeon_cs_update_pages(struct radeon_cs_parser *p, int pg_idx)
{
	int new_page;
	struct radeon_cs_chunk *ibc = &p->chunks[p->chunk_ib_idx];
	int i;
	int size = PAGE_SIZE;

	for (i = ibc->last_copied_page + 1; i < pg_idx; i++) {
		if (DRM_COPY_FROM_USER(p->ib->ptr + (i * (PAGE_SIZE/4)),
				       ibc->user_ptr + (i * PAGE_SIZE),
				       PAGE_SIZE)) {
			p->parser_error = -EFAULT;
			return 0;
		}
	}

	new_page = ibc->kpage_idx[0] < ibc->kpage_idx[1] ? 0 : 1;

	if (pg_idx == ibc->last_page_index) {
		size = (ibc->length_dw * 4) % PAGE_SIZE;
			if (size == 0)
				size = PAGE_SIZE;
	}

	if (DRM_COPY_FROM_USER(ibc->kpage[new_page],
			       ibc->user_ptr + (pg_idx * PAGE_SIZE),
			       size)) {
		p->parser_error = -EFAULT;
		return 0;
	}

	/* copy to IB here */
	memcpy((void *)(p->ib->ptr+(pg_idx*(PAGE_SIZE/4))), ibc->kpage[new_page], size);

	ibc->last_copied_page = pg_idx;
	ibc->kpage_idx[new_page] = pg_idx;

	return new_page;
}
Commit	Line	Data
771fe6b9 JG	1	/*
	2	* Copyright 2008 Jerome Glisse.
	3	* All Rights Reserved.
	4	*
	5	* Permission is hereby granted, free of charge, to any person obtaining a
	6	* copy of this software and associated documentation files (the "Software"),
	7	* to deal in the Software without restriction, including without limitation
	8	* the rights to use, copy, modify, merge, publish, distribute, sublicense,
	9	* and/or sell copies of the Software, and to permit persons to whom the
	10	* Software is furnished to do so, subject to the following conditions:
	11	*
	12	* The above copyright notice and this permission notice (including the next
	13	* paragraph) shall be included in all copies or substantial portions of the
	14	* Software.
	15	*
	16	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	17	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	18	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	19	* PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
	20	* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
	21	* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
	22	* DEALINGS IN THE SOFTWARE.
	23	*
	24	* Authors:
	25	* Jerome Glisse <glisse@freedesktop.org>
	26	*/
	27	#include "drmP.h"
	28	#include "radeon_drm.h"
	29	#include "radeon_reg.h"
	30	#include "radeon.h"
	31
	32	void r100_cs_dump_packet(struct radeon_cs_parser *p,
	33	struct radeon_cs_packet *pkt);
	34
	35	int radeon_cs_parser_relocs(struct radeon_cs_parser *p)
	36	{
	37	struct drm_device *ddev = p->rdev->ddev;
	38	struct radeon_cs_chunk *chunk;
	39	unsigned i, j;
	40	bool duplicate;
	41
	42	if (p->chunk_relocs_idx == -1) {
	43	return 0;
	44	}
	45	chunk = &p->chunks[p->chunk_relocs_idx];
	46	/* FIXME: we assume that each relocs use 4 dwords */
	47	p->nrelocs = chunk->length_dw / 4;
	48	p->relocs_ptr = kcalloc(p->nrelocs, sizeof(void *), GFP_KERNEL);
	49	if (p->relocs_ptr == NULL) {
	50	return -ENOMEM;
	51	}
	52	p->relocs = kcalloc(p->nrelocs, sizeof(struct radeon_cs_reloc), GFP_KERNEL);
	53	if (p->relocs == NULL) {
	54	return -ENOMEM;
	55	}
	56	for (i = 0; i < p->nrelocs; i++) {
	57	struct drm_radeon_cs_reloc *r;
	58
	59	duplicate = false;
	60	r = (struct drm_radeon_cs_reloc )&chunk->kdata[i4];
16557f1e	61	for (j = 0; j < i; j++) {
771fe6b9 JG	62	if (r->handle == p->relocs[j].handle) {
	63	p->relocs_ptr[i] = &p->relocs[j];
	64	duplicate = true;
	65	break;
	66	}
	67	}
	68	if (!duplicate) {
	69	p->relocs[i].gobj = drm_gem_object_lookup(ddev,
	70	p->filp,
	71	r->handle);
	72	if (p->relocs[i].gobj == NULL) {
	73	DRM_ERROR("gem object lookup failed 0x%x\n",
	74	r->handle);
bf79cb91	75	return -ENOENT;
771fe6b9 JG	76	}
771fe6b9 JG	77	p->relocs_ptr[i] = &p->relocs[i];
7e4d15d9	78	p->relocs[i].robj = gem_to_radeon_bo(p->relocs[i].gobj);
4c788679	79	p->relocs[i].lobj.bo = p->relocs[i].robj;
771fe6b9	80	p->relocs[i].lobj.wdomain = r->write_domain;
147666fb TH	81	p->relocs[i].lobj.rdomain = r->read_domains;
147666fb TH	82	p->relocs[i].lobj.tv.bo = &p->relocs[i].robj->tbo;
771fe6b9 JG	83	p->relocs[i].handle = r->handle;
771fe6b9 JG	84	p->relocs[i].flags = r->flags;
4c788679	85	radeon_bo_list_add_object(&p->relocs[i].lobj,
147666fb	86	&p->validated);
16557f1e CK	87	} else
16557f1e CK	88	p->relocs[i].handle = 0;
771fe6b9	89	}
94429bb6	90	return radeon_bo_list_validate(&p->validated);
771fe6b9 JG	91	}
	92
	93	int radeon_cs_parser_init(struct radeon_cs_parser p, void data)
	94	{
	95	struct drm_radeon_cs *cs = data;
	96	uint64_t *chunk_array_ptr;
e70f224c	97	unsigned size, i, flags = 0;
771fe6b9 JG	98
	99	if (!cs->num_chunks) {
	100	return 0;
	101	}
	102	/* get chunks */
	103	INIT_LIST_HEAD(&p->validated);
	104	p->idx = 0;
	105	p->chunk_ib_idx = -1;
	106	p->chunk_relocs_idx = -1;
	107	p->chunks_array = kcalloc(cs->num_chunks, sizeof(uint64_t), GFP_KERNEL);
	108	if (p->chunks_array == NULL) {
	109	return -ENOMEM;
	110	}
	111	chunk_array_ptr = (uint64_t *)(unsigned long)(cs->chunks);
	112	if (DRM_COPY_FROM_USER(p->chunks_array, chunk_array_ptr,
	113	sizeof(uint64_t)*cs->num_chunks)) {
	114	return -EFAULT;
	115	}
	116	p->nchunks = cs->num_chunks;
	117	p->chunks = kcalloc(p->nchunks, sizeof(struct radeon_cs_chunk), GFP_KERNEL);
	118	if (p->chunks == NULL) {
	119	return -ENOMEM;
	120	}
	121	for (i = 0; i < p->nchunks; i++) {
	122	struct drm_radeon_cs_chunk __user **chunk_ptr = NULL;
	123	struct drm_radeon_cs_chunk user_chunk;
	124	uint32_t __user *cdata;
	125
	126	chunk_ptr = (void __user*)(unsigned long)p->chunks_array[i];
	127	if (DRM_COPY_FROM_USER(&user_chunk, chunk_ptr,
	128	sizeof(struct drm_radeon_cs_chunk))) {
	129	return -EFAULT;
	130	}
5176fdc4 DA	131	p->chunks[i].length_dw = user_chunk.length_dw;
5176fdc4 DA	132	p->chunks[i].kdata = NULL;
771fe6b9	133	p->chunks[i].chunk_id = user_chunk.chunk_id;
5176fdc4	134
771fe6b9 JG	135	if (p->chunks[i].chunk_id == RADEON_CHUNK_ID_RELOCS) {
	136	p->chunk_relocs_idx = i;
	137	}
	138	if (p->chunks[i].chunk_id == RADEON_CHUNK_ID_IB) {
	139	p->chunk_ib_idx = i;
5176fdc4 DA	140	/* zero length IB isn't useful */
	141	if (p->chunks[i].length_dw == 0)
	142	return -EINVAL;
771fe6b9	143	}
e70f224c MO	144	if (p->chunks[i].chunk_id == RADEON_CHUNK_ID_FLAGS &&
	145	!p->chunks[i].length_dw) {
	146	return -EINVAL;
	147	}
5176fdc4	148
771fe6b9	149	p->chunks[i].length_dw = user_chunk.length_dw;
513bcb46	150	p->chunks[i].user_ptr = (void __user *)(unsigned long)user_chunk.chunk_data;
771fe6b9	151
513bcb46 DA	152	cdata = (uint32_t *)(unsigned long)user_chunk.chunk_data;
	153	if (p->chunks[i].chunk_id != RADEON_CHUNK_ID_IB) {
	154	size = p->chunks[i].length_dw * sizeof(uint32_t);
	155	p->chunks[i].kdata = kmalloc(size, GFP_KERNEL);
	156	if (p->chunks[i].kdata == NULL) {
	157	return -ENOMEM;
	158	}
	159	if (DRM_COPY_FROM_USER(p->chunks[i].kdata,
	160	p->chunks[i].user_ptr, size)) {
	161	return -EFAULT;
	162	}
e70f224c MO	163	if (p->chunks[i].chunk_id == RADEON_CHUNK_ID_FLAGS) {
	164	flags = p->chunks[i].kdata[0];
	165	}
513bcb46 DA	166	} else {
	167	p->chunks[i].kpage[0] = kmalloc(PAGE_SIZE, GFP_KERNEL);
	168	p->chunks[i].kpage[1] = kmalloc(PAGE_SIZE, GFP_KERNEL);
	169	if (p->chunks[i].kpage[0] == NULL \|\| p->chunks[i].kpage[1] == NULL) {
	170	kfree(p->chunks[i].kpage[0]);
	171	kfree(p->chunks[i].kpage[1]);
	172	return -ENOMEM;
	173	}
	174	p->chunks[i].kpage_idx[0] = -1;
	175	p->chunks[i].kpage_idx[1] = -1;
	176	p->chunks[i].last_copied_page = -1;
	177	p->chunks[i].last_page_index = ((p->chunks[i].length_dw * 4) - 1) / PAGE_SIZE;
771fe6b9 JG	178	}
	179	}
	180	if (p->chunks[p->chunk_ib_idx].length_dw > (16 * 1024)) {
	181	DRM_ERROR("cs IB too big: %d\n",
	182	p->chunks[p->chunk_ib_idx].length_dw);
	183	return -EINVAL;
	184	}
e70f224c MO	185
e70f224c MO	186	p->keep_tiling_flags = (flags & RADEON_CS_KEEP_TILING_FLAGS) != 0;
771fe6b9 JG	187	return 0;
	188	}
	189
	190	/**
	191	* cs_parser_fini() - clean parser states
	192	* @parser: parser structure holding parsing context.
	193	* @error: error number
	194	*
	195	* If error is set than unvalidate buffer, otherwise just free memory
	196	* used by parsing context.
	197	**/
	198	static void radeon_cs_parser_fini(struct radeon_cs_parser *parser, int error)
	199	{
	200	unsigned i;
	201
147666fb TH	202
	203	if (!error && parser->ib)
	204	ttm_eu_fence_buffer_objects(&parser->validated,
	205	parser->ib->fence);
	206	else
	207	ttm_eu_backoff_reservation(&parser->validated);
	208
fcbc451b PN	209	if (parser->relocs != NULL) {
	210	for (i = 0; i < parser->nrelocs; i++) {
	211	if (parser->relocs[i].gobj)
	212	drm_gem_object_unreference_unlocked(parser->relocs[i].gobj);
	213	}
771fe6b9	214	}
48e113e5	215	kfree(parser->track);
771fe6b9 JG	216	kfree(parser->relocs);
	217	kfree(parser->relocs_ptr);
	218	for (i = 0; i < parser->nchunks; i++) {
	219	kfree(parser->chunks[i].kdata);
513bcb46 DA	220	kfree(parser->chunks[i].kpage[0]);
513bcb46 DA	221	kfree(parser->chunks[i].kpage[1]);
771fe6b9 JG	222	}
	223	kfree(parser->chunks);
	224	kfree(parser->chunks_array);
	225	radeon_ib_free(parser->rdev, &parser->ib);
	226	}
	227
	228	int radeon_cs_ioctl(struct drm_device dev, void data, struct drm_file *filp)
	229	{
	230	struct radeon_device *rdev = dev->dev_private;
	231	struct radeon_cs_parser parser;
	232	struct radeon_cs_chunk *ib_chunk;
	233	int r;
	234
7a1619b9	235	radeon_mutex_lock(&rdev->cs_mutex);
771fe6b9 JG	236	/* initialize parser */
	237	memset(&parser, 0, sizeof(struct radeon_cs_parser));
	238	parser.filp = filp;
	239	parser.rdev = rdev;
c8c15ff1	240	parser.dev = rdev->dev;
428c6e36	241	parser.family = rdev->family;
771fe6b9 JG	242	r = radeon_cs_parser_init(&parser, data);
	243	if (r) {
	244	DRM_ERROR("Failed to initialize parser !\n");
	245	radeon_cs_parser_fini(&parser, r);
7a1619b9	246	radeon_mutex_unlock(&rdev->cs_mutex);
771fe6b9 JG	247	return r;
771fe6b9 JG	248	}
69e130a6 JG	249	ib_chunk = &parser.chunks[parser.chunk_ib_idx];
	250	r = radeon_ib_get(rdev, RADEON_RING_TYPE_GFX_INDEX, &parser.ib,
	251	ib_chunk->length_dw * 4);
771fe6b9 JG	252	if (r) {
	253	DRM_ERROR("Failed to get ib !\n");
	254	radeon_cs_parser_fini(&parser, r);
7a1619b9	255	radeon_mutex_unlock(&rdev->cs_mutex);
771fe6b9 JG	256	return r;
	257	}
	258	r = radeon_cs_parser_relocs(&parser);
	259	if (r) {
97f23b3d DA	260	if (r != -ERESTARTSYS)
97f23b3d DA	261	DRM_ERROR("Failed to parse relocation %d!\n", r);
771fe6b9	262	radeon_cs_parser_fini(&parser, r);
7a1619b9	263	radeon_mutex_unlock(&rdev->cs_mutex);
771fe6b9 JG	264	return r;
	265	}
	266	/* Copy the packet into the IB, the parser will read from the
	267	* input memory (cached) and write to the IB (which can be
	268	* uncached). */
771fe6b9	269	parser.ib->length_dw = ib_chunk->length_dw;
771fe6b9	270	r = radeon_cs_parse(&parser);
513bcb46 DA	271	if (r \|\| parser.parser_error) {
	272	DRM_ERROR("Invalid command stream !\n");
	273	radeon_cs_parser_fini(&parser, r);
7a1619b9	274	radeon_mutex_unlock(&rdev->cs_mutex);
513bcb46 DA	275	return r;
	276	}
	277	r = radeon_cs_finish_pages(&parser);
771fe6b9 JG	278	if (r) {
	279	DRM_ERROR("Invalid command stream !\n");
	280	radeon_cs_parser_fini(&parser, r);
7a1619b9	281	radeon_mutex_unlock(&rdev->cs_mutex);
771fe6b9 JG	282	return r;
	283	}
	284	r = radeon_ib_schedule(rdev, parser.ib);
	285	if (r) {
426d3107	286	DRM_ERROR("Failed to schedule IB !\n");
771fe6b9 JG	287	}
771fe6b9 JG	288	radeon_cs_parser_fini(&parser, r);
7a1619b9	289	radeon_mutex_unlock(&rdev->cs_mutex);
771fe6b9 JG	290	return r;
771fe6b9 JG	291	}
513bcb46 DA	292
	293	int radeon_cs_finish_pages(struct radeon_cs_parser *p)
	294	{
	295	struct radeon_cs_chunk *ibc = &p->chunks[p->chunk_ib_idx];
	296	int i;
	297	int size = PAGE_SIZE;
	298
	299	for (i = ibc->last_copied_page + 1; i <= ibc->last_page_index; i++) {
	300	if (i == ibc->last_page_index) {
	301	size = (ibc->length_dw * 4) % PAGE_SIZE;
	302	if (size == 0)
	303	size = PAGE_SIZE;
	304	}
	305
	306	if (DRM_COPY_FROM_USER(p->ib->ptr + (i * (PAGE_SIZE/4)),
	307	ibc->user_ptr + (i * PAGE_SIZE),
	308	size))
	309	return -EFAULT;
	310	}
	311	return 0;
	312	}
	313
	314	int radeon_cs_update_pages(struct radeon_cs_parser *p, int pg_idx)
	315	{
	316	int new_page;
513bcb46 DA	317	struct radeon_cs_chunk *ibc = &p->chunks[p->chunk_ib_idx];
	318	int i;
	319	int size = PAGE_SIZE;
	320
c5e617e2	321	for (i = ibc->last_copied_page + 1; i < pg_idx; i++) {
513bcb46 DA	322	if (DRM_COPY_FROM_USER(p->ib->ptr + (i * (PAGE_SIZE/4)),
	323	ibc->user_ptr + (i * PAGE_SIZE),
	324	PAGE_SIZE)) {
	325	p->parser_error = -EFAULT;
	326	return 0;
	327	}
	328	}
	329
	330	new_page = ibc->kpage_idx[0] < ibc->kpage_idx[1] ? 0 : 1;
	331
	332	if (pg_idx == ibc->last_page_index) {
	333	size = (ibc->length_dw * 4) % PAGE_SIZE;
	334	if (size == 0)
	335	size = PAGE_SIZE;
	336	}
	337
	338	if (DRM_COPY_FROM_USER(ibc->kpage[new_page],
	339	ibc->user_ptr + (pg_idx * PAGE_SIZE),
	340	size)) {
	341	p->parser_error = -EFAULT;
	342	return 0;
	343	}
	344
	345	/* copy to IB here */
	346	memcpy((void )(p->ib->ptr+(pg_idx(PAGE_SIZE/4))), ibc->kpage[new_page], size);
	347
	348	ibc->last_copied_page = pg_idx;
	349	ibc->kpage_idx[new_page] = pg_idx;
	350
	351	return new_page;
	352	}