summaryrefslogtreecommitdiff
path: root/bsd-core/tdfx
diff options
context:
space:
mode:
Diffstat (limited to 'bsd-core/tdfx')
0 files changed, 0 insertions, 0 deletions
generated by cgit v1.2.3 (git 2.25.1) at 2025-08-05 10:00:58 +0000
' href='#n68'>68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 
/*
 * Copyright 2007 Jérôme 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 "radeon_ms.h"
#include "amd.h"

static inline void amd_cmd_bo_cleanup(struct drm_device *dev,
				      struct amd_cmd *cmd)
{
	struct amd_cmd_bo *bo;

	mutex_lock(&dev->struct_mutex);
	list_for_each_entry(bo, &cmd->bo_unused.list, list) {
		drm_bo_usage_deref_locked(&bo->bo);
	}
	list_for_each_entry(bo, &cmd->bo_used.list, list) {
		drm_bo_usage_deref_locked(&bo->bo);
	}
	mutex_unlock(&dev->struct_mutex);
}

static inline int amd_cmd_bo_validate(struct drm_device *dev,
				      struct drm_file *file,
				      struct amd_cmd_bo *cmd_bo,
				      struct drm_amd_cmd_bo *bo,
				      uint64_t data)
{
	int ret;

	/* validate only cmd indirect or data bo */
	switch (bo->type) {
	case DRM_AMD_CMD_BO_TYPE_CMD_INDIRECT:
	case DRM_AMD_CMD_BO_TYPE_DATA:
	case DRM_AMD_CMD_BO_TYPE_CMD_RING:
		/* FIXME: make sure userspace can no longer map the bo */
		break;
	default:
		return 0;
	}
	/* check that buffer operation is validate */
	if (bo->op_req.op != drm_bo_validate) {
		DRM_ERROR("buffer 0x%x object operation is not validate.\n",
			  cmd_bo->handle);
		return -EINVAL;
	}
	/* validate buffer */
	memset(&bo->op_rep, 0, sizeof(struct drm_bo_arg_rep));
	ret = drm_bo_handle_validate(file,
				     bo->op_req.bo_req.handle,
				     bo->op_req.bo_req.flags,
				     bo->op_req.bo_req.mask,
				     bo->op_req.bo_req.hint,
				     bo->op_req.bo_req.fence_class,
				     &bo->op_rep.bo_info,
				     &cmd_bo->bo);
	if (ret) {
		DRM_ERROR("validate error %d for 0x%08x\n",
			  ret, cmd_bo->handle);
		return ret;
	}
	if (copy_to_user((void __user *)((unsigned)data), bo,
			 sizeof(struct drm_amd_cmd_bo))) {
		DRM_ERROR("failed to copy to user validate result of 0x%08x\n",
			  cmd_bo->handle);
		return -EFAULT;
	}
	return 0;
}

static int amd_cmd_parse_cmd_bo(struct drm_device *dev,
				struct drm_file *file,
				struct drm_amd_cmd *drm_amd_cmd,
				struct amd_cmd *cmd)
{
	struct drm_amd_cmd_bo drm_amd_cmd_bo;
	struct amd_cmd_bo *cmd_bo;
	uint32_t bo_count = 0;
	uint64_t data = drm_amd_cmd->bo;
	int ret = 0;

	do {
		/* check we don't have more buffer than announced */
		if (bo_count >= drm_amd_cmd->bo_count) {
			DRM_ERROR("cmd bo count exceeded got %d waited %d\n.",
				  bo_count, drm_amd_cmd->bo_count);
			return -EINVAL;
		}
		/* initialize amd_cmd_bo */
		cmd_bo = &cmd->bo[bo_count];
		INIT_LIST_HEAD(&cmd_bo->list);
		cmd_bo->bo = NULL;
		/* copy from userspace */
		if (copy_from_user(&drm_amd_cmd_bo,
				   (void __user *)((unsigned)data),
				   sizeof(struct drm_amd_cmd_bo))) {
			return -EFAULT;
		}
		/* collect informations */
		cmd_bo->type = drm_amd_cmd_bo.type;
		cmd_bo->mask = drm_amd_cmd_bo.op_req.bo_req.mask;
		cmd_bo->flags = drm_amd_cmd_bo.op_req.bo_req.flags;
		cmd_bo->handle = drm_amd_cmd_bo.op_req.arg_handle;
		/* get bo objects */
		mutex_lock(&dev->struct_mutex);
		cmd_bo->bo = drm_lookup_buffer_object(file, cmd_bo->handle, 1);
		mutex_unlock(&dev->struct_mutex);
		if (cmd_bo->bo == NULL) {
			DRM_ERROR("unknown bo handle 0x%x\n", cmd_bo->handle);
			return -EINVAL;
		}
		/* validate buffer if necessary */
		ret = amd_cmd_bo_validate(dev, file, cmd_bo,
					  &drm_amd_cmd_bo, data);
		if (ret) {
			mutex_lock(&dev->struct_mutex);
			drm_bo_usage_deref_locked(&cmd_bo->bo);
			mutex_unlock(&dev->struct_mutex);
			return ret;
		}
		/* inspect bo type */
		switch (cmd_bo->type) {
		case DRM_AMD_CMD_BO_TYPE_CMD_INDIRECT:
			/* add it so we properly unreference in case of error */
			list_add_tail(&cmd_bo->list, &cmd->bo_used.list);
			return -EINVAL;
		case DRM_AMD_CMD_BO_TYPE_DATA:
			/* add to unused list */
			list_add_tail(&cmd_bo->list, &cmd->bo_unused.list);
			break;
		case DRM_AMD_CMD_BO_TYPE_CMD_RING:
			/* set cdw_bo */
			list_add_tail(&cmd_bo->list, &cmd->bo_used.list);
			cmd->cdw_bo = cmd_bo;
			break;
		default:
			mutex_lock(&dev->struct_mutex);
			drm_bo_usage_deref_locked(&cmd_bo->bo);
			mutex_unlock(&dev->struct_mutex);
			DRM_ERROR("unknow bo 0x%x unknown type 0x%x in cmd\n",
				  cmd_bo->handle, cmd_bo->type);
			return -EINVAL;
		}
		/* ok next bo */
		data = drm_amd_cmd_bo.next;
		bo_count++;
	} while (data != 0);
	if (bo_count != drm_amd_cmd->bo_count) {
		DRM_ERROR("not enought buffer got %d expected %d\n.",
			  bo_count, drm_amd_cmd->bo_count);
		return -EINVAL;
	}
	return 0;
}

static int amd_cmd_packet0_check(struct drm_device *dev,
				 struct amd_cmd *cmd,
				 int *cdw_id)
{
	struct drm_radeon_private *dev_priv = dev->dev_private;
	uint32_t reg, count, r, i;
	int ret;

	reg = cmd->cdw[*cdw_id] & PACKET0_REG_MASK;
	count = (cmd->cdw[*cdw_id] & PACKET0_COUNT_MASK) >> PACKET0_COUNT_SHIFT;
	if (reg + count > dev_priv->cmd_module.numof_p0_checkers) {
		DRM_ERROR("0x%08X registers is above last accepted registers\n",
			  reg << 2);
		return -EINVAL;
	}
	for (r = reg, i = 0; i <= count; i++, r++) {
		if (dev_priv->cmd_module.check_p0[r] == NULL) {
			continue;
		}
		if (dev_priv->cmd_module.check_p0[r] == (void *)-1) {
			DRM_ERROR("register 0x%08X (at %d) is forbidden\n",
			         r << 2, (*cdw_id) + i + 1);
			return -EINVAL;
		}
		ret = dev_priv->cmd_module.check_p0[r](dev, cmd,
						       (*cdw_id) + i + 1, r);
		if (ret) {
			return ret;
		}
	}
	/* header + N + 1 dword passed test */
	(*cdw_id) += count + 2;
	return 0;
}

static int amd_cmd_packet3_check(struct drm_device *dev,
				 struct amd_cmd *cmd,
				 int *cdw_id)
{
	struct drm_radeon_private *dev_priv = dev->dev_private;
	uint32_t opcode, count;
	int ret;

	opcode = (cmd->cdw[*cdw_id] & PACKET3_OPCODE_MASK) >>
		 PACKET3_OPCODE_SHIFT;
	if (opcode > dev_priv->cmd_module.numof_p3_checkers) {
		DRM_ERROR("0x%08X opcode is above last accepted opcodes\n",
			  opcode);
		return -EINVAL;
	}
	count = (cmd->cdw[*cdw_id] & PACKET3_COUNT_MASK) >> PACKET3_COUNT_SHIFT;
	if (dev_priv->cmd_module.check_p3[opcode] == NULL) {
		DRM_ERROR("0x%08X opcode is forbidden\n", opcode);
		return -EINVAL;
	}
	ret = dev_priv->cmd_module.check_p3[opcode](dev, cmd,
						    (*cdw_id) + 1, opcode,
						    count);
	if (ret) {
		return ret;
	}
	/* header + N + 1 dword passed test */
	(*cdw_id) += count + 2;
	return 0;
}

int amd_cmd_check(struct drm_device *dev, struct amd_cmd *cmd)
{
	uint32_t i;
	int ret;

	for (i = 0; i < cmd->cdw_count;) {
		switch (PACKET_HEADER_GET(cmd->cdw[i])) {
		case 0:
			ret = amd_cmd_packet0_check(dev, cmd, &i);
			if (ret) {
				return ret;
			}
			break;
		case 1:
			/* we don't accept packet 1 */
			return -EINVAL;
		case 2:
			/* FIXME: accept packet 2 */
			return -EINVAL;
		case 3:
			ret = amd_cmd_packet3_check(dev, cmd, &i);
			if (ret) {
				return ret;
			}
			break;
		}
	}
	return 0;
}

static int amd_ioctl_cmd_cleanup(struct drm_device *dev,
				 struct drm_file *file,
				 struct amd_cmd *cmd,
				 int r)
{
	/* check if we need to unfence object */
	if (r && (!list_empty(&cmd->bo_unused.list) ||
		  !list_empty(&cmd->bo_unused.list))) {
		drm_putback_buffer_objects(dev);		
	}
	if (cmd->cdw) {
		drm_bo_kunmap(&cmd->cdw_kmap);
		cmd->cdw = NULL;
	}
	/* derefence buffer as lookup reference them */
	amd_cmd_bo_cleanup(dev, cmd);
	if (cmd->bo) {
		drm_free(cmd->bo,
			 cmd->bo_count * sizeof(struct amd_cmd_bo),
		 	 DRM_MEM_DRIVER);
		cmd->bo = NULL;
	}
	drm_bo_read_unlock(&dev->bm.bm_lock);
	return r;
}

int amd_ioctl_cmd(struct drm_device *dev, void *data, struct drm_file *file)
{
	struct drm_radeon_private *dev_priv = dev->dev_private;
	struct drm_amd_cmd *drm_amd_cmd = data;
	struct drm_fence_arg *fence_arg = &drm_amd_cmd->fence_arg;
	struct drm_fence_object *fence;
	struct amd_cmd cmd;
	int tmp;
	int ret;

	/* check that we have a command checker */
	if (dev_priv->cmd_module.check == NULL) {
		DRM_ERROR("invalid command checker module.\n");
		return -EFAULT;
	}
	/* command dword count must be >= 0 */
	if (drm_amd_cmd->cdw_count == 0) {
		DRM_ERROR("command dword count is 0.\n");
		return -EINVAL;
	}

	/* FIXME: Lock buffer manager. This is needed so the X server can
	 * block DRI clients while VT switched. The X server will then 
	 * take the lock in write mode
	 */

	ret = drm_bo_read_lock(&dev->bm.bm_lock, 1);
	if (ret) {

		/* FIXME: ret can be -EAGAIN here, 
		 * which really isn't an error. 
		 */

		DRM_ERROR("bo read locking failed.\n");
		return ret;
	}
	/* cleanup & initialize amd cmd structure */
	memset(&cmd, 0, sizeof(struct amd_cmd));
	cmd.bo_count = drm_amd_cmd->bo_count;
	INIT_LIST_HEAD(&cmd.bo_unused.list);
	INIT_LIST_HEAD(&cmd.bo_used.list);
	/* allocate structure for bo parsing */
	cmd.bo = drm_calloc(cmd.bo_count, sizeof(struct amd_cmd_bo),
			    DRM_MEM_DRIVER);
	if (cmd.bo == NULL) {
		return amd_ioctl_cmd_cleanup(dev, file, &cmd, -ENOMEM);
        }
	/* parse cmd bo */
	ret = amd_cmd_parse_cmd_bo(dev, file, drm_amd_cmd, &cmd);
	if (ret) {
		return amd_ioctl_cmd_cleanup(dev, file, &cmd, ret);
	}
	/* check that a command buffer have been found */
	if (cmd.cdw_bo == NULL) {
		DRM_ERROR("no command buffer submited in cmd ioctl\n");
		return amd_ioctl_cmd_cleanup(dev, file, &cmd, -EINVAL);
	}
	/* map command buffer */
	cmd.cdw_count = drm_amd_cmd->cdw_count;
	cmd.cdw_size = (cmd.cdw_bo->bo->mem.num_pages * PAGE_SIZE) >> 2;
	if (cmd.cdw_size < cmd.cdw_count) {
		DRM_ERROR("command buffer (%d) is smaller than expected (%d)\n",
			  cmd.cdw_size, cmd.cdw_count);
		return amd_ioctl_cmd_cleanup(dev, file, &cmd, -EINVAL);
	}
	memset(&cmd.cdw_kmap, 0, sizeof(struct drm_bo_kmap_obj));
	ret = drm_bo_kmap(cmd.cdw_bo->bo, 0,
			  cmd.cdw_bo->bo->mem.num_pages, &cmd.cdw_kmap);
	if (ret) {
		DRM_ERROR("error mapping command buffer\n");
		return amd_ioctl_cmd_cleanup(dev, file, &cmd, ret);
	}
	cmd.cdw = drm_bmo_virtual(&cmd.cdw_kmap, &tmp);
	/* do command checking */
	ret = dev_priv->cmd_module.check(dev, &cmd);
	if (ret) {
		return amd_ioctl_cmd_cleanup(dev, file, &cmd, ret);
	}
	/* copy command to ring */
	ret = radeon_ms_ring_emit(dev, cmd.cdw, cmd.cdw_count);
	if (ret) {
		return amd_ioctl_cmd_cleanup(dev, file, &cmd, ret);
	}
	/* fence */
	ret = drm_fence_buffer_objects(dev, NULL, 0, NULL, &fence);
	if (ret) {
		return amd_ioctl_cmd_cleanup(dev, file, &cmd, ret);
	}
	if (!(fence_arg->flags & DRM_FENCE_FLAG_NO_USER)) {
		ret = drm_fence_add_user_object(file, fence,
						fence_arg->flags &
						DRM_FENCE_FLAG_SHAREABLE);
		if (!ret) {
			fence_arg->handle = fence->base.hash.key;
			fence_arg->fence_class = fence->fence_class;
			fence_arg->type = fence->type;
			fence_arg->signaled = fence->signaled_types;
			fence_arg->sequence = fence->sequence;
		} else {
			DRM_ERROR("error add object fence, expect oddity !\n");
		}
	}
	drm_fence_usage_deref_unlocked(&fence);
	return amd_ioctl_cmd_cleanup(dev, file, &cmd, 0);
}
generated by cgit v1.2.3 (git 2.25.1) at 2025-08-05 10:00:58 +0000