[deliverable/linux.git] / drivers / gpu / drm / qxl / qxl_ioctl.c

/*
 * Copyright 2013 Red Hat Inc.
 *
 * 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 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
 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) 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: Dave Airlie
 *          Alon Levy
 */

#include "qxl_drv.h"
#include "qxl_object.h"

/*
 * TODO: allocating a new gem(in qxl_bo) for each request.
 * This is wasteful since bo's are page aligned.
 */
static int qxl_alloc_ioctl(struct drm_device *dev, void *data,
			   struct drm_file *file_priv)
{
	struct qxl_device *qdev = dev->dev_private;
	struct drm_qxl_alloc *qxl_alloc = data;
	int ret;
	struct qxl_bo *qobj;
	uint32_t handle;
	u32 domain = QXL_GEM_DOMAIN_VRAM;

	if (qxl_alloc->size == 0) {
		DRM_ERROR("invalid size %d\n", qxl_alloc->size);
		return -EINVAL;
	}
	ret = qxl_gem_object_create_with_handle(qdev, file_priv,
						domain,
						qxl_alloc->size,
						NULL,
						&qobj, &handle);
	if (ret) {
		DRM_ERROR("%s: failed to create gem ret=%d\n",
			  __func__, ret);
		return -ENOMEM;
	}
	qxl_alloc->handle = handle;
	return 0;
}

static int qxl_map_ioctl(struct drm_device *dev, void *data,
			 struct drm_file *file_priv)
{
	struct qxl_device *qdev = dev->dev_private;
	struct drm_qxl_map *qxl_map = data;

	return qxl_mode_dumb_mmap(file_priv, qdev->ddev, qxl_map->handle,
				  &qxl_map->offset);
}

struct qxl_reloc_info {
	int type;
	struct qxl_bo *dst_bo;
	uint32_t dst_offset;
	struct qxl_bo *src_bo;
	int src_offset;
};

/*
 * dst must be validated, i.e. whole bo on vram/surfacesram (right now all bo's
 * are on vram).
 * *(dst + dst_off) = qxl_bo_physical_address(src, src_off)
 */
static void
apply_reloc(struct qxl_device *qdev, struct qxl_reloc_info *info)
{
	void *reloc_page;
	reloc_page = qxl_bo_kmap_atomic_page(qdev, info->dst_bo, info->dst_offset & PAGE_MASK);
	*(uint64_t *)(reloc_page + (info->dst_offset & ~PAGE_MASK)) = qxl_bo_physical_address(qdev,
											      info->src_bo,
											      info->src_offset);
	qxl_bo_kunmap_atomic_page(qdev, info->dst_bo, reloc_page);
}

static void
apply_surf_reloc(struct qxl_device *qdev, struct qxl_reloc_info *info)
{
	uint32_t id = 0;
	void *reloc_page;

	if (info->src_bo && !info->src_bo->is_primary)
		id = info->src_bo->surface_id;

	reloc_page = qxl_bo_kmap_atomic_page(qdev, info->dst_bo, info->dst_offset & PAGE_MASK);
	*(uint32_t *)(reloc_page + (info->dst_offset & ~PAGE_MASK)) = id;
	qxl_bo_kunmap_atomic_page(qdev, info->dst_bo, reloc_page);
}

/* return holding the reference to this object */
static struct qxl_bo *qxlhw_handle_to_bo(struct qxl_device *qdev,
					 struct drm_file *file_priv, uint64_t handle,
					 struct qxl_release *release)
{
	struct drm_gem_object *gobj;
	struct qxl_bo *qobj;
	int ret;

	gobj = drm_gem_object_lookup(qdev->ddev, file_priv, handle);
	if (!gobj)
		return NULL;

	qobj = gem_to_qxl_bo(gobj);

	ret = qxl_release_list_add(release, qobj);
	if (ret)
		return NULL;

	return qobj;
}

/*
 * Usage of execbuffer:
 * Relocations need to take into account the full QXLDrawable size.
 * However, the command as passed from user space must *not* contain the initial
 * QXLReleaseInfo struct (first XXX bytes)
 */
static int qxl_process_single_command(struct qxl_device *qdev,
				      struct drm_qxl_command *cmd,
				      struct drm_file *file_priv)
{
	struct qxl_reloc_info *reloc_info;
	int release_type;
	struct qxl_release *release;
	struct qxl_bo *cmd_bo;
	void *fb_cmd;
	int i, j, ret, num_relocs;
	int unwritten;

	switch (cmd->type) {
	case QXL_CMD_DRAW:
		release_type = QXL_RELEASE_DRAWABLE;
		break;
	case QXL_CMD_SURFACE:
	case QXL_CMD_CURSOR:
	default:
		DRM_DEBUG("Only draw commands in execbuffers\n");
		return -EINVAL;
		break;
	}

	if (cmd->command_size > PAGE_SIZE - sizeof(union qxl_release_info))
		return -EINVAL;

	if (!access_ok(VERIFY_READ,
		       (void *)(unsigned long)cmd->command,
		       cmd->command_size))
		return -EFAULT;

	reloc_info = kmalloc(sizeof(struct qxl_reloc_info) * cmd->relocs_num, GFP_KERNEL);
	if (!reloc_info)
		return -ENOMEM;

	ret = qxl_alloc_release_reserved(qdev,
					 sizeof(union qxl_release_info) +
					 cmd->command_size,
					 release_type,
					 &release,
					 &cmd_bo);
	if (ret)
		goto out_free_reloc;

	/* TODO copy slow path code from i915 */
	fb_cmd = qxl_bo_kmap_atomic_page(qdev, cmd_bo, (release->release_offset & PAGE_SIZE));
	unwritten = __copy_from_user_inatomic_nocache(fb_cmd + sizeof(union qxl_release_info) + (release->release_offset & ~PAGE_SIZE), (void *)(unsigned long)cmd->command, cmd->command_size);

	{
		struct qxl_drawable *draw = fb_cmd;
		draw->mm_time = qdev->rom->mm_clock;
	}

	qxl_bo_kunmap_atomic_page(qdev, cmd_bo, fb_cmd);
	if (unwritten) {
		DRM_ERROR("got unwritten %d\n", unwritten);
		ret = -EFAULT;
		goto out_free_release;
	}

	/* fill out reloc info structs */
	num_relocs = 0;
	for (i = 0; i < cmd->relocs_num; ++i) {
		struct drm_qxl_reloc reloc;

		if (DRM_COPY_FROM_USER(&reloc,
				       &((struct drm_qxl_reloc *)(uintptr_t)cmd->relocs)[i],
				       sizeof(reloc))) {
			ret = -EFAULT;
			goto out_free_bos;
		}

		/* add the bos to the list of bos to validate -
		   need to validate first then process relocs? */
		if (reloc.reloc_type != QXL_RELOC_TYPE_BO && reloc.reloc_type != QXL_RELOC_TYPE_SURF) {
			DRM_DEBUG("unknown reloc type %d\n", reloc_info[i].type);

			ret = -EINVAL;
			goto out_free_bos;
		}
		reloc_info[i].type = reloc.reloc_type;

		if (reloc.dst_handle) {
			reloc_info[i].dst_bo = qxlhw_handle_to_bo(qdev, file_priv,
								  reloc.dst_handle, release);
			if (!reloc_info[i].dst_bo) {
				ret = -EINVAL;
				reloc_info[i].src_bo = NULL;
				goto out_free_bos;
			}
			reloc_info[i].dst_offset = reloc.dst_offset;
		} else {
			reloc_info[i].dst_bo = cmd_bo;
			reloc_info[i].dst_offset = reloc.dst_offset + release->release_offset;
		}
		num_relocs++;

		/* reserve and validate the reloc dst bo */
		if (reloc.reloc_type == QXL_RELOC_TYPE_BO || reloc.src_handle > 0) {
			reloc_info[i].src_bo =
				qxlhw_handle_to_bo(qdev, file_priv,
						   reloc.src_handle, release);
			if (!reloc_info[i].src_bo) {
				if (reloc_info[i].dst_bo != cmd_bo)
					drm_gem_object_unreference_unlocked(&reloc_info[i].dst_bo->gem_base);
				ret = -EINVAL;
				goto out_free_bos;
			}
			reloc_info[i].src_offset = reloc.src_offset;
		} else {
			reloc_info[i].src_bo = NULL;
			reloc_info[i].src_offset = 0;
		}
	}

	/* validate all buffers */
	ret = qxl_release_reserve_list(release, false);
	if (ret)
		goto out_free_bos;

	for (i = 0; i < cmd->relocs_num; ++i) {
		if (reloc_info[i].type == QXL_RELOC_TYPE_BO)
			apply_reloc(qdev, &reloc_info[i]);
		else if (reloc_info[i].type == QXL_RELOC_TYPE_SURF)
			apply_surf_reloc(qdev, &reloc_info[i]);
	}

	ret = qxl_push_command_ring_release(qdev, release, cmd->type, true);
	if (ret)
		qxl_release_backoff_reserve_list(release);
	else
		qxl_release_fence_buffer_objects(release);

out_free_bos:
	for (j = 0; j < num_relocs; j++) {
		if (reloc_info[j].dst_bo != cmd_bo)
			drm_gem_object_unreference_unlocked(&reloc_info[j].dst_bo->gem_base);
		if (reloc_info[j].src_bo && reloc_info[j].src_bo != cmd_bo)
			drm_gem_object_unreference_unlocked(&reloc_info[j].src_bo->gem_base);
	}
out_free_release:
	if (ret)
		qxl_release_free(qdev, release);
out_free_reloc:
	kfree(reloc_info);
	return ret;
}

static int qxl_execbuffer_ioctl(struct drm_device *dev, void *data,
				struct drm_file *file_priv)
{
	struct qxl_device *qdev = dev->dev_private;
	struct drm_qxl_execbuffer *execbuffer = data;
	struct drm_qxl_command user_cmd;
	int cmd_num;
	int ret;

	for (cmd_num = 0; cmd_num < execbuffer->commands_num; ++cmd_num) {

		struct drm_qxl_command *commands =
			(struct drm_qxl_command *)(uintptr_t)execbuffer->commands;

		if (DRM_COPY_FROM_USER(&user_cmd, &commands[cmd_num],
				       sizeof(user_cmd)))
			return -EFAULT;

		ret = qxl_process_single_command(qdev, &user_cmd, file_priv);
		if (ret)
			return ret;
	}
	return 0;
}

static int qxl_update_area_ioctl(struct drm_device *dev, void *data,
				 struct drm_file *file)
{
	struct qxl_device *qdev = dev->dev_private;
	struct drm_qxl_update_area *update_area = data;
	struct qxl_rect area = {.left = update_area->left,
				.top = update_area->top,
				.right = update_area->right,
				.bottom = update_area->bottom};
	int ret;
	struct drm_gem_object *gobj = NULL;
	struct qxl_bo *qobj = NULL;

	if (update_area->left >= update_area->right ||
	    update_area->top >= update_area->bottom)
		return -EINVAL;

	gobj = drm_gem_object_lookup(dev, file, update_area->handle);
	if (gobj == NULL)
		return -ENOENT;

	qobj = gem_to_qxl_bo(gobj);

	ret = qxl_bo_reserve(qobj, false);
	if (ret)
		goto out;

	if (!qobj->pin_count) {
		qxl_ttm_placement_from_domain(qobj, qobj->type, false);
		ret = ttm_bo_validate(&qobj->tbo, &qobj->placement,
				      true, false);
		if (unlikely(ret))
			goto out;
	}

	ret = qxl_bo_check_id(qdev, qobj);
	if (ret)
		goto out2;
	if (!qobj->surface_id)
		DRM_ERROR("got update area for surface with no id %d\n", update_area->handle);
	ret = qxl_io_update_area(qdev, qobj, &area);

out2:
	qxl_bo_unreserve(qobj);

out:
	drm_gem_object_unreference_unlocked(gobj);
	return ret;
}

static int qxl_getparam_ioctl(struct drm_device *dev, void *data,
		       struct drm_file *file_priv)
{
	struct qxl_device *qdev = dev->dev_private;
	struct drm_qxl_getparam *param = data;

	switch (param->param) {
	case QXL_PARAM_NUM_SURFACES:
		param->value = qdev->rom->n_surfaces;
		break;
	case QXL_PARAM_MAX_RELOCS:
		param->value = QXL_MAX_RES;
		break;
	default:
		return -EINVAL;
	}
	return 0;
}

static int qxl_clientcap_ioctl(struct drm_device *dev, void *data,
				  struct drm_file *file_priv)
{
	struct qxl_device *qdev = dev->dev_private;
	struct drm_qxl_clientcap *param = data;
	int byte, idx;

	byte = param->index / 8;
	idx = param->index % 8;

	if (qdev->pdev->revision < 4)
		return -ENOSYS;

	if (byte >= 58)
		return -ENOSYS;

	if (qdev->rom->client_capabilities[byte] & (1 << idx))
		return 0;
	return -ENOSYS;
}

static int qxl_alloc_surf_ioctl(struct drm_device *dev, void *data,
				struct drm_file *file)
{
	struct qxl_device *qdev = dev->dev_private;
	struct drm_qxl_alloc_surf *param = data;
	struct qxl_bo *qobj;
	int handle;
	int ret;
	int size, actual_stride;
	struct qxl_surface surf;

	/* work out size allocate bo with handle */
	actual_stride = param->stride < 0 ? -param->stride : param->stride;
	size = actual_stride * param->height + actual_stride;

	surf.format = param->format;
	surf.width = param->width;
	surf.height = param->height;
	surf.stride = param->stride;
	surf.data = 0;

	ret = qxl_gem_object_create_with_handle(qdev, file,
						QXL_GEM_DOMAIN_SURFACE,
						size,
						&surf,
						&qobj, &handle);
	if (ret) {
		DRM_ERROR("%s: failed to create gem ret=%d\n",
			  __func__, ret);
		return -ENOMEM;
	} else
		param->handle = handle;
	return ret;
}

struct drm_ioctl_desc qxl_ioctls[] = {
	DRM_IOCTL_DEF_DRV(QXL_ALLOC, qxl_alloc_ioctl, DRM_AUTH|DRM_UNLOCKED),

	DRM_IOCTL_DEF_DRV(QXL_MAP, qxl_map_ioctl, DRM_AUTH|DRM_UNLOCKED),

	DRM_IOCTL_DEF_DRV(QXL_EXECBUFFER, qxl_execbuffer_ioctl,
							DRM_AUTH|DRM_UNLOCKED),
	DRM_IOCTL_DEF_DRV(QXL_UPDATE_AREA, qxl_update_area_ioctl,
							DRM_AUTH|DRM_UNLOCKED),
	DRM_IOCTL_DEF_DRV(QXL_GETPARAM, qxl_getparam_ioctl,
							DRM_AUTH|DRM_UNLOCKED),
	DRM_IOCTL_DEF_DRV(QXL_CLIENTCAP, qxl_clientcap_ioctl,
							DRM_AUTH|DRM_UNLOCKED),

	DRM_IOCTL_DEF_DRV(QXL_ALLOC_SURF, qxl_alloc_surf_ioctl,
			  DRM_AUTH|DRM_UNLOCKED),
};

int qxl_max_ioctls = DRM_ARRAY_SIZE(qxl_ioctls);
Commit	Line	Data
f64122c1 DA	1	/*
	2	* Copyright 2013 Red Hat Inc.
	3	*
	4	* Permission is hereby granted, free of charge, to any person obtaining a
	5	* copy of this software and associated documentation files (the "Software"),
	6	* to deal in the Software without restriction, including without limitation
	7	* the rights to use, copy, modify, merge, publish, distribute, sublicense,
	8	* and/or sell copies of the Software, and to permit persons to whom the
	9	* Software is furnished to do so, subject to the following conditions:
	10	*
	11	* The above copyright notice and this permission notice shall be included in
	12	* all copies or substantial portions of the Software.
	13	*
	14	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	15	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	16	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	17	* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
	18	* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
	19	* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
	20	* OTHER DEALINGS IN THE SOFTWARE.
	21	*
	22	* Authors: Dave Airlie
	23	* Alon Levy
	24	*/
	25
	26	#include "qxl_drv.h"
	27	#include "qxl_object.h"
	28
	29	/*
	30	* TODO: allocating a new gem(in qxl_bo) for each request.
	31	* This is wasteful since bo's are page aligned.
	32	*/
6d01f1f5 DA	33	static int qxl_alloc_ioctl(struct drm_device dev, void data,
6d01f1f5 DA	34	struct drm_file *file_priv)
f64122c1 DA	35	{
	36	struct qxl_device *qdev = dev->dev_private;
	37	struct drm_qxl_alloc *qxl_alloc = data;
	38	int ret;
	39	struct qxl_bo *qobj;
	40	uint32_t handle;
	41	u32 domain = QXL_GEM_DOMAIN_VRAM;
	42
	43	if (qxl_alloc->size == 0) {
	44	DRM_ERROR("invalid size %d\n", qxl_alloc->size);
	45	return -EINVAL;
	46	}
	47	ret = qxl_gem_object_create_with_handle(qdev, file_priv,
	48	domain,
	49	qxl_alloc->size,
	50	NULL,
	51	&qobj, &handle);
	52	if (ret) {
	53	DRM_ERROR("%s: failed to create gem ret=%d\n",
	54	__func__, ret);
	55	return -ENOMEM;
	56	}
	57	qxl_alloc->handle = handle;
	58	return 0;
	59	}
	60
6d01f1f5 DA	61	static int qxl_map_ioctl(struct drm_device dev, void data,
6d01f1f5 DA	62	struct drm_file *file_priv)
f64122c1 DA	63	{
	64	struct qxl_device *qdev = dev->dev_private;
	65	struct drm_qxl_map *qxl_map = data;
	66
	67	return qxl_mode_dumb_mmap(file_priv, qdev->ddev, qxl_map->handle,
	68	&qxl_map->offset);
	69	}
	70
8002db63 DA	71	struct qxl_reloc_info {
	72	int type;
	73	struct qxl_bo *dst_bo;
	74	uint32_t dst_offset;
	75	struct qxl_bo *src_bo;
	76	int src_offset;
	77	};
	78
f64122c1 DA	79	/*
	80	* dst must be validated, i.e. whole bo on vram/surfacesram (right now all bo's
	81	* are on vram).
	82	* *(dst + dst_off) = qxl_bo_physical_address(src, src_off)
	83	*/
	84	static void
8002db63	85	apply_reloc(struct qxl_device qdev, struct qxl_reloc_info info)
f64122c1 DA	86	{
f64122c1 DA	87	void *reloc_page;
8002db63 DA	88	reloc_page = qxl_bo_kmap_atomic_page(qdev, info->dst_bo, info->dst_offset & PAGE_MASK);
	89	(uint64_t )(reloc_page + (info->dst_offset & ~PAGE_MASK)) = qxl_bo_physical_address(qdev,
	90	info->src_bo,
	91	info->src_offset);
	92	qxl_bo_kunmap_atomic_page(qdev, info->dst_bo, reloc_page);
f64122c1 DA	93	}
	94
	95	static void
8002db63	96	apply_surf_reloc(struct qxl_device qdev, struct qxl_reloc_info info)
f64122c1 DA	97	{
	98	uint32_t id = 0;
	99	void *reloc_page;
	100
8002db63 DA	101	if (info->src_bo && !info->src_bo->is_primary)
8002db63 DA	102	id = info->src_bo->surface_id;
f64122c1	103
8002db63 DA	104	reloc_page = qxl_bo_kmap_atomic_page(qdev, info->dst_bo, info->dst_offset & PAGE_MASK);
	105	(uint32_t )(reloc_page + (info->dst_offset & ~PAGE_MASK)) = id;
	106	qxl_bo_kunmap_atomic_page(qdev, info->dst_bo, reloc_page);
f64122c1 DA	107	}
	108
	109	/* return holding the reference to this object */
6d01f1f5 DA	110	static struct qxl_bo qxlhw_handle_to_bo(struct qxl_device qdev,
6d01f1f5 DA	111	struct drm_file *file_priv, uint64_t handle,
8002db63	112	struct qxl_release *release)
f64122c1 DA	113	{
	114	struct drm_gem_object *gobj;
	115	struct qxl_bo *qobj;
	116	int ret;
	117
	118	gobj = drm_gem_object_lookup(qdev->ddev, file_priv, handle);
8002db63	119	if (!gobj)
f64122c1	120	return NULL;
8002db63	121
f64122c1 DA	122	qobj = gem_to_qxl_bo(gobj);
f64122c1 DA	123
8002db63	124	ret = qxl_release_list_add(release, qobj);
f64122c1 DA	125	if (ret)
	126	return NULL;
	127
	128	return qobj;
	129	}
	130
	131	/*
	132	* Usage of execbuffer:
	133	* Relocations need to take into account the full QXLDrawable size.
	134	* However, the command as passed from user space must not contain the initial
	135	* QXLReleaseInfo struct (first XXX bytes)
	136	*/
8002db63 DA	137	static int qxl_process_single_command(struct qxl_device *qdev,
	138	struct drm_qxl_command *cmd,
	139	struct drm_file *file_priv)
f64122c1	140	{
8002db63 DA	141	struct qxl_reloc_info *reloc_info;
	142	int release_type;
	143	struct qxl_release *release;
	144	struct qxl_bo *cmd_bo;
f64122c1	145	void *fb_cmd;
8002db63	146	int i, j, ret, num_relocs;
f64122c1	147	int unwritten;
f64122c1	148
8002db63 DA	149	switch (cmd->type) {
	150	case QXL_CMD_DRAW:
	151	release_type = QXL_RELEASE_DRAWABLE;
	152	break;
	153	case QXL_CMD_SURFACE:
	154	case QXL_CMD_CURSOR:
	155	default:
	156	DRM_DEBUG("Only draw commands in execbuffers\n");
	157	return -EINVAL;
	158	break;
	159	}
f64122c1	160
8002db63 DA	161	if (cmd->command_size > PAGE_SIZE - sizeof(union qxl_release_info))
8002db63 DA	162	return -EINVAL;
f64122c1	163
8002db63 DA	164	if (!access_ok(VERIFY_READ,
	165	(void *)(unsigned long)cmd->command,
	166	cmd->command_size))
	167	return -EFAULT;
f64122c1	168
8002db63 DA	169	reloc_info = kmalloc(sizeof(struct qxl_reloc_info) * cmd->relocs_num, GFP_KERNEL);
	170	if (!reloc_info)
	171	return -ENOMEM;
18097b91	172
8002db63 DA	173	ret = qxl_alloc_release_reserved(qdev,
	174	sizeof(union qxl_release_info) +
	175	cmd->command_size,
	176	release_type,
	177	&release,
	178	&cmd_bo);
	179	if (ret)
	180	goto out_free_reloc;
f64122c1	181
8002db63 DA	182	/* TODO copy slow path code from i915 */
	183	fb_cmd = qxl_bo_kmap_atomic_page(qdev, cmd_bo, (release->release_offset & PAGE_SIZE));
	184	unwritten = __copy_from_user_inatomic_nocache(fb_cmd + sizeof(union qxl_release_info) + (release->release_offset & ~PAGE_SIZE), (void *)(unsigned long)cmd->command, cmd->command_size);
c9272155	185
8002db63 DA	186	{
	187	struct qxl_drawable *draw = fb_cmd;
	188	draw->mm_time = qdev->rom->mm_clock;
	189	}
c9272155	190
8002db63 DA	191	qxl_bo_kunmap_atomic_page(qdev, cmd_bo, fb_cmd);
	192	if (unwritten) {
	193	DRM_ERROR("got unwritten %d\n", unwritten);
	194	ret = -EFAULT;
	195	goto out_free_release;
	196	}
	197
	198	/* fill out reloc info structs */
	199	num_relocs = 0;
	200	for (i = 0; i < cmd->relocs_num; ++i) {
	201	struct drm_qxl_reloc reloc;
	202
	203	if (DRM_COPY_FROM_USER(&reloc,
	204	&((struct drm_qxl_reloc *)(uintptr_t)cmd->relocs)[i],
	205	sizeof(reloc))) {
	206	ret = -EFAULT;
	207	goto out_free_bos;
f64122c1 DA	208	}
f64122c1 DA	209
8002db63 DA	210	/* add the bos to the list of bos to validate -
	211	need to validate first then process relocs? */
	212	if (reloc.reloc_type != QXL_RELOC_TYPE_BO && reloc.reloc_type != QXL_RELOC_TYPE_SURF) {
	213	DRM_DEBUG("unknown reloc type %d\n", reloc_info[i].type);
f64122c1	214
8002db63 DA	215	ret = -EINVAL;
	216	goto out_free_bos;
	217	}
	218	reloc_info[i].type = reloc.reloc_type;
	219
	220	if (reloc.dst_handle) {
	221	reloc_info[i].dst_bo = qxlhw_handle_to_bo(qdev, file_priv,
	222	reloc.dst_handle, release);
	223	if (!reloc_info[i].dst_bo) {
	224	ret = -EINVAL;
	225	reloc_info[i].src_bo = NULL;
	226	goto out_free_bos;
f64122c1	227	}
8002db63 DA	228	reloc_info[i].dst_offset = reloc.dst_offset;
	229	} else {
	230	reloc_info[i].dst_bo = cmd_bo;
	231	reloc_info[i].dst_offset = reloc.dst_offset + release->release_offset;
	232	}
	233	num_relocs++;
	234
	235	/* reserve and validate the reloc dst bo */
	236	if (reloc.reloc_type == QXL_RELOC_TYPE_BO \|\| reloc.src_handle > 0) {
	237	reloc_info[i].src_bo =
	238	qxlhw_handle_to_bo(qdev, file_priv,
	239	reloc.src_handle, release);
	240	if (!reloc_info[i].src_bo) {
	241	if (reloc_info[i].dst_bo != cmd_bo)
	242	drm_gem_object_unreference_unlocked(&reloc_info[i].dst_bo->gem_base);
	243	ret = -EINVAL;
	244	goto out_free_bos;
f64122c1	245	}
8002db63 DA	246	reloc_info[i].src_offset = reloc.src_offset;
	247	} else {
	248	reloc_info[i].src_bo = NULL;
	249	reloc_info[i].src_offset = 0;
	250	}
	251	}
f64122c1	252
8002db63 DA	253	/* validate all buffers */
	254	ret = qxl_release_reserve_list(release, false);
	255	if (ret)
	256	goto out_free_bos;
f64122c1	257
8002db63 DA	258	for (i = 0; i < cmd->relocs_num; ++i) {
	259	if (reloc_info[i].type == QXL_RELOC_TYPE_BO)
	260	apply_reloc(qdev, &reloc_info[i]);
	261	else if (reloc_info[i].type == QXL_RELOC_TYPE_SURF)
	262	apply_surf_reloc(qdev, &reloc_info[i]);
	263	}
f64122c1	264
8002db63 DA	265	ret = qxl_push_command_ring_release(qdev, release, cmd->type, true);
	266	if (ret)
	267	qxl_release_backoff_reserve_list(release);
	268	else
	269	qxl_release_fence_buffer_objects(release);
	270
	271	out_free_bos:
	272	for (j = 0; j < num_relocs; j++) {
	273	if (reloc_info[j].dst_bo != cmd_bo)
	274	drm_gem_object_unreference_unlocked(&reloc_info[j].dst_bo->gem_base);
	275	if (reloc_info[j].src_bo && reloc_info[j].src_bo != cmd_bo)
	276	drm_gem_object_unreference_unlocked(&reloc_info[j].src_bo->gem_base);
	277	}
	278	out_free_release:
	279	if (ret)
	280	qxl_release_free(qdev, release);
	281	out_free_reloc:
	282	kfree(reloc_info);
	283	return ret;
	284	}
	285
	286	static int qxl_execbuffer_ioctl(struct drm_device dev, void data,
	287	struct drm_file *file_priv)
	288	{
	289	struct qxl_device *qdev = dev->dev_private;
	290	struct drm_qxl_execbuffer *execbuffer = data;
	291	struct drm_qxl_command user_cmd;
	292	int cmd_num;
	293	int ret;
	294
	295	for (cmd_num = 0; cmd_num < execbuffer->commands_num; ++cmd_num) {
	296
	297	struct drm_qxl_command *commands =
	298	(struct drm_qxl_command *)(uintptr_t)execbuffer->commands;
	299
	300	if (DRM_COPY_FROM_USER(&user_cmd, &commands[cmd_num],
	301	sizeof(user_cmd)))
	302	return -EFAULT;
	303
	304	ret = qxl_process_single_command(qdev, &user_cmd, file_priv);
	305	if (ret)
f64122c1	306	return ret;
f64122c1	307	}
f64122c1 DA	308	return 0;
	309	}
	310
6d01f1f5 DA	311	static int qxl_update_area_ioctl(struct drm_device dev, void data,
6d01f1f5 DA	312	struct drm_file *file)
f64122c1 DA	313	{
	314	struct qxl_device *qdev = dev->dev_private;
	315	struct drm_qxl_update_area *update_area = data;
	316	struct qxl_rect area = {.left = update_area->left,
	317	.top = update_area->top,
	318	.right = update_area->right,
	319	.bottom = update_area->bottom};
	320	int ret;
	321	struct drm_gem_object *gobj = NULL;
	322	struct qxl_bo *qobj = NULL;
	323
	324	if (update_area->left >= update_area->right \|\|
	325	update_area->top >= update_area->bottom)
	326	return -EINVAL;
	327
	328	gobj = drm_gem_object_lookup(dev, file, update_area->handle);
	329	if (gobj == NULL)
	330	return -ENOENT;
	331
	332	qobj = gem_to_qxl_bo(gobj);
	333
	334	ret = qxl_bo_reserve(qobj, false);
	335	if (ret)
	336	goto out;
	337
	338	if (!qobj->pin_count) {
4f49ec92	339	qxl_ttm_placement_from_domain(qobj, qobj->type, false);
f64122c1 DA	340	ret = ttm_bo_validate(&qobj->tbo, &qobj->placement,
	341	true, false);
	342	if (unlikely(ret))
	343	goto out;
	344	}
	345
	346	ret = qxl_bo_check_id(qdev, qobj);
	347	if (ret)
	348	goto out2;
	349	if (!qobj->surface_id)
	350	DRM_ERROR("got update area for surface with no id %d\n", update_area->handle);
	351	ret = qxl_io_update_area(qdev, qobj, &area);
	352
	353	out2:
	354	qxl_bo_unreserve(qobj);
	355
	356	out:
	357	drm_gem_object_unreference_unlocked(gobj);
	358	return ret;
	359	}
	360
	361	static int qxl_getparam_ioctl(struct drm_device dev, void data,
	362	struct drm_file *file_priv)
	363	{
	364	struct qxl_device *qdev = dev->dev_private;
	365	struct drm_qxl_getparam *param = data;
	366
	367	switch (param->param) {
	368	case QXL_PARAM_NUM_SURFACES:
	369	param->value = qdev->rom->n_surfaces;
	370	break;
	371	case QXL_PARAM_MAX_RELOCS:
	372	param->value = QXL_MAX_RES;
	373	break;
	374	default:
	375	return -EINVAL;
	376	}
	377	return 0;
	378	}
	379
	380	static int qxl_clientcap_ioctl(struct drm_device dev, void data,
	381	struct drm_file *file_priv)
	382	{
	383	struct qxl_device *qdev = dev->dev_private;
	384	struct drm_qxl_clientcap *param = data;
	385	int byte, idx;
	386
	387	byte = param->index / 8;
	388	idx = param->index % 8;
	389
	390	if (qdev->pdev->revision < 4)
	391	return -ENOSYS;
	392
62c8ba7c	393	if (byte >= 58)
f64122c1 DA	394	return -ENOSYS;
	395
	396	if (qdev->rom->client_capabilities[byte] & (1 << idx))
	397	return 0;
	398	return -ENOSYS;
	399	}
	400
	401	static int qxl_alloc_surf_ioctl(struct drm_device dev, void data,
	402	struct drm_file *file)
	403	{
	404	struct qxl_device *qdev = dev->dev_private;
	405	struct drm_qxl_alloc_surf *param = data;
	406	struct qxl_bo *qobj;
	407	int handle;
	408	int ret;
	409	int size, actual_stride;
	410	struct qxl_surface surf;
	411
	412	/* work out size allocate bo with handle */
	413	actual_stride = param->stride < 0 ? -param->stride : param->stride;
	414	size = actual_stride * param->height + actual_stride;
	415
	416	surf.format = param->format;
	417	surf.width = param->width;
	418	surf.height = param->height;
	419	surf.stride = param->stride;
	420	surf.data = 0;
	421
	422	ret = qxl_gem_object_create_with_handle(qdev, file,
	423	QXL_GEM_DOMAIN_SURFACE,
	424	size,
	425	&surf,
	426	&qobj, &handle);
	427	if (ret) {
	428	DRM_ERROR("%s: failed to create gem ret=%d\n",
	429	__func__, ret);
	430	return -ENOMEM;
	431	} else
	432	param->handle = handle;
	433	return ret;
	434	}
	435
	436	struct drm_ioctl_desc qxl_ioctls[] = {
	437	DRM_IOCTL_DEF_DRV(QXL_ALLOC, qxl_alloc_ioctl, DRM_AUTH\|DRM_UNLOCKED),
	438
	439	DRM_IOCTL_DEF_DRV(QXL_MAP, qxl_map_ioctl, DRM_AUTH\|DRM_UNLOCKED),
	440
	441	DRM_IOCTL_DEF_DRV(QXL_EXECBUFFER, qxl_execbuffer_ioctl,
	442	DRM_AUTH\|DRM_UNLOCKED),
	443	DRM_IOCTL_DEF_DRV(QXL_UPDATE_AREA, qxl_update_area_ioctl,
	444	DRM_AUTH\|DRM_UNLOCKED),
	445	DRM_IOCTL_DEF_DRV(QXL_GETPARAM, qxl_getparam_ioctl,
	446	DRM_AUTH\|DRM_UNLOCKED),
	447	DRM_IOCTL_DEF_DRV(QXL_CLIENTCAP, qxl_clientcap_ioctl,
	448	DRM_AUTH\|DRM_UNLOCKED),
	449
	450	DRM_IOCTL_DEF_DRV(QXL_ALLOC_SURF, qxl_alloc_surf_ioctl,
	451	DRM_AUTH\|DRM_UNLOCKED),
	452	};
	453
	454	int qxl_max_ioctls = DRM_ARRAY_SIZE(qxl_ioctls);