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1/*2 * Copyright 2013 Red Hat Inc.3 *4 * Permission is hereby granted, free of charge, to any person obtaining a5 * copy of this software and associated documentation files (the "Software"),6 * to deal in the Software without restriction, including without limitation7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,8 * and/or sell copies of the Software, and to permit persons to whom the9 * Software is furnished to do so, subject to the following conditions:10 *11 * The above copyright notice and this permission notice shall be included in12 * all copies or substantial portions of the Software.13 *14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR18 * 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 OR20 * OTHER DEALINGS IN THE SOFTWARE.21 *22 * Authors: Dave Airlie23 * Alon Levy24 */25 26#include <linux/pci.h>27#include <linux/uaccess.h>28 29#include "qxl_drv.h"30#include "qxl_object.h"31 32/*33 * TODO: allocating a new gem(in qxl_bo) for each request.34 * This is wasteful since bo's are page aligned.35 */36int qxl_alloc_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv)37{38 struct qxl_device *qdev = to_qxl(dev);39 struct drm_qxl_alloc *qxl_alloc = data;40 int ret;41 uint32_t handle;42 u32 domain = QXL_GEM_DOMAIN_VRAM;43 44 if (qxl_alloc->size == 0) {45 DRM_ERROR("invalid size %d\n", qxl_alloc->size);46 return -EINVAL;47 }48 ret = qxl_gem_object_create_with_handle(qdev, file_priv,49 domain,50 qxl_alloc->size,51 NULL,52 NULL, &handle);53 if (ret) {54 DRM_ERROR("%s: failed to create gem ret=%d\n",55 __func__, ret);56 return -ENOMEM;57 }58 qxl_alloc->handle = handle;59 return 0;60}61 62int qxl_map_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv)63{64 struct qxl_device *qdev = to_qxl(dev);65 struct drm_qxl_map *qxl_map = data;66 67 return drm_gem_ttm_dumb_map_offset(file_priv, &qdev->ddev, qxl_map->handle,68 &qxl_map->offset);69}70 71struct 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 79/*80 * dst must be validated, i.e. whole bo on vram/surfacesram (right now all bo's81 * are on vram).82 * *(dst + dst_off) = qxl_bo_physical_address(src, src_off)83 */84static void85apply_reloc(struct qxl_device *qdev, struct qxl_reloc_info *info)86{87 void *reloc_page;88 89 reloc_page = qxl_bo_kmap_atomic_page(qdev, info->dst_bo, info->dst_offset & PAGE_MASK);90 *(uint64_t *)(reloc_page + (info->dst_offset & ~PAGE_MASK)) = qxl_bo_physical_address(qdev,91 info->src_bo,92 info->src_offset);93 qxl_bo_kunmap_atomic_page(qdev, info->dst_bo, reloc_page);94}95 96static void97apply_surf_reloc(struct qxl_device *qdev, struct qxl_reloc_info *info)98{99 uint32_t id = 0;100 void *reloc_page;101 102 if (info->src_bo && !info->src_bo->is_primary)103 id = info->src_bo->surface_id;104 105 reloc_page = qxl_bo_kmap_atomic_page(qdev, info->dst_bo, info->dst_offset & PAGE_MASK);106 *(uint32_t *)(reloc_page + (info->dst_offset & ~PAGE_MASK)) = id;107 qxl_bo_kunmap_atomic_page(qdev, info->dst_bo, reloc_page);108}109 110/* return holding the reference to this object */111static int qxlhw_handle_to_bo(struct drm_file *file_priv, uint64_t handle,112 struct qxl_release *release, struct qxl_bo **qbo_p)113{114 struct drm_gem_object *gobj;115 struct qxl_bo *qobj;116 int ret;117 118 gobj = drm_gem_object_lookup(file_priv, handle);119 if (!gobj)120 return -EINVAL;121 122 qobj = gem_to_qxl_bo(gobj);123 124 ret = qxl_release_list_add(release, qobj);125 drm_gem_object_put(gobj);126 if (ret)127 return ret;128 129 *qbo_p = qobj;130 return 0;131}132 133/*134 * Usage of execbuffer:135 * Relocations need to take into account the full QXLDrawable size.136 * However, the command as passed from user space must *not* contain the initial137 * QXLReleaseInfo struct (first XXX bytes)138 */139static int qxl_process_single_command(struct qxl_device *qdev,140 struct drm_qxl_command *cmd,141 struct drm_file *file_priv)142{143 struct qxl_reloc_info *reloc_info;144 int release_type;145 struct qxl_release *release;146 struct qxl_bo *cmd_bo;147 void *fb_cmd;148 int i, ret;149 int unwritten;150 151 switch (cmd->type) {152 case QXL_CMD_DRAW:153 release_type = QXL_RELEASE_DRAWABLE;154 break;155 case QXL_CMD_SURFACE:156 case QXL_CMD_CURSOR:157 default:158 DRM_DEBUG("Only draw commands in execbuffers\n");159 return -EINVAL;160 }161 162 if (cmd->command_size > PAGE_SIZE - sizeof(union qxl_release_info))163 return -EINVAL;164 165 if (!access_ok(u64_to_user_ptr(cmd->command),166 cmd->command_size))167 return -EFAULT;168 169 reloc_info = kmalloc_array(cmd->relocs_num,170 sizeof(struct qxl_reloc_info), GFP_KERNEL);171 if (!reloc_info)172 return -ENOMEM;173 174 ret = qxl_alloc_release_reserved(qdev,175 sizeof(union qxl_release_info) +176 cmd->command_size,177 release_type,178 &release,179 &cmd_bo);180 if (ret)181 goto out_free_reloc;182 183 /* TODO copy slow path code from i915 */184 fb_cmd = qxl_bo_kmap_atomic_page(qdev, cmd_bo, (release->release_offset & PAGE_MASK));185 unwritten = __copy_from_user_inatomic_nocache186 (fb_cmd + sizeof(union qxl_release_info) + (release->release_offset & ~PAGE_MASK),187 u64_to_user_ptr(cmd->command), cmd->command_size);188 189 {190 struct qxl_drawable *draw = fb_cmd;191 192 draw->mm_time = qdev->rom->mm_clock;193 }194 195 qxl_bo_kunmap_atomic_page(qdev, cmd_bo, fb_cmd);196 if (unwritten) {197 DRM_ERROR("got unwritten %d\n", unwritten);198 ret = -EFAULT;199 goto out_free_release;200 }201 202 /* fill out reloc info structs */203 for (i = 0; i < cmd->relocs_num; ++i) {204 struct drm_qxl_reloc reloc;205 struct drm_qxl_reloc __user *u = u64_to_user_ptr(cmd->relocs);206 207 if (copy_from_user(&reloc, u + i, sizeof(reloc))) {208 ret = -EFAULT;209 goto out_free_bos;210 }211 212 /* add the bos to the list of bos to validate -213 need to validate first then process relocs? */214 if (reloc.reloc_type != QXL_RELOC_TYPE_BO && reloc.reloc_type != QXL_RELOC_TYPE_SURF) {215 DRM_DEBUG("unknown reloc type %d\n", reloc.reloc_type);216 217 ret = -EINVAL;218 goto out_free_bos;219 }220 reloc_info[i].type = reloc.reloc_type;221 222 if (reloc.dst_handle) {223 ret = qxlhw_handle_to_bo(file_priv, reloc.dst_handle, release,224 &reloc_info[i].dst_bo);225 if (ret)226 goto out_free_bos;227 reloc_info[i].dst_offset = reloc.dst_offset;228 } else {229 reloc_info[i].dst_bo = cmd_bo;230 reloc_info[i].dst_offset = reloc.dst_offset + release->release_offset;231 }232 233 /* reserve and validate the reloc dst bo */234 if (reloc.reloc_type == QXL_RELOC_TYPE_BO || reloc.src_handle) {235 ret = qxlhw_handle_to_bo(file_priv, reloc.src_handle, release,236 &reloc_info[i].src_bo);237 if (ret)238 goto out_free_bos;239 reloc_info[i].src_offset = reloc.src_offset;240 } else {241 reloc_info[i].src_bo = NULL;242 reloc_info[i].src_offset = 0;243 }244 }245 246 /* validate all buffers */247 ret = qxl_release_reserve_list(release, false);248 if (ret)249 goto out_free_bos;250 251 for (i = 0; i < cmd->relocs_num; ++i) {252 if (reloc_info[i].type == QXL_RELOC_TYPE_BO)253 apply_reloc(qdev, &reloc_info[i]);254 else if (reloc_info[i].type == QXL_RELOC_TYPE_SURF)255 apply_surf_reloc(qdev, &reloc_info[i]);256 }257 258 qxl_release_fence_buffer_objects(release);259 ret = qxl_push_command_ring_release(qdev, release, cmd->type, true);260 261out_free_bos:262out_free_release:263 if (ret)264 qxl_release_free(qdev, release);265out_free_reloc:266 kfree(reloc_info);267 return ret;268}269 270int qxl_execbuffer_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv)271{272 struct qxl_device *qdev = to_qxl(dev);273 struct drm_qxl_execbuffer *execbuffer = data;274 struct drm_qxl_command user_cmd;275 int cmd_num;276 int ret;277 278 for (cmd_num = 0; cmd_num < execbuffer->commands_num; ++cmd_num) {279 280 struct drm_qxl_command __user *commands =281 u64_to_user_ptr(execbuffer->commands);282 283 if (copy_from_user(&user_cmd, commands + cmd_num,284 sizeof(user_cmd)))285 return -EFAULT;286 287 ret = qxl_process_single_command(qdev, &user_cmd, file_priv);288 if (ret)289 return ret;290 }291 return 0;292}293 294int qxl_update_area_ioctl(struct drm_device *dev, void *data, struct drm_file *file)295{296 struct qxl_device *qdev = to_qxl(dev);297 struct drm_qxl_update_area *update_area = data;298 struct qxl_rect area = {.left = update_area->left,299 .top = update_area->top,300 .right = update_area->right,301 .bottom = update_area->bottom};302 int ret;303 struct drm_gem_object *gobj = NULL;304 struct qxl_bo *qobj = NULL;305 struct ttm_operation_ctx ctx = { true, false };306 307 if (update_area->left >= update_area->right ||308 update_area->top >= update_area->bottom)309 return -EINVAL;310 311 gobj = drm_gem_object_lookup(file, update_area->handle);312 if (gobj == NULL)313 return -ENOENT;314 315 qobj = gem_to_qxl_bo(gobj);316 317 ret = qxl_bo_reserve(qobj);318 if (ret)319 goto out;320 321 if (!qobj->tbo.pin_count) {322 qxl_ttm_placement_from_domain(qobj, qobj->type);323 ret = ttm_bo_validate(&qobj->tbo, &qobj->placement, &ctx);324 if (unlikely(ret))325 goto out;326 }327 328 ret = qxl_bo_check_id(qdev, qobj);329 if (ret)330 goto out2;331 if (!qobj->surface_id)332 DRM_ERROR("got update area for surface with no id %d\n", update_area->handle);333 ret = qxl_io_update_area(qdev, qobj, &area);334 335out2:336 qxl_bo_unreserve(qobj);337 338out:339 drm_gem_object_put(gobj);340 return ret;341}342 343int qxl_getparam_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv)344{345 struct qxl_device *qdev = to_qxl(dev);346 struct drm_qxl_getparam *param = data;347 348 switch (param->param) {349 case QXL_PARAM_NUM_SURFACES:350 param->value = qdev->rom->n_surfaces;351 break;352 case QXL_PARAM_MAX_RELOCS:353 param->value = QXL_MAX_RES;354 break;355 default:356 return -EINVAL;357 }358 return 0;359}360 361int qxl_clientcap_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv)362{363 struct qxl_device *qdev = to_qxl(dev);364 struct pci_dev *pdev = to_pci_dev(dev->dev);365 struct drm_qxl_clientcap *param = data;366 int byte, idx;367 368 byte = param->index / 8;369 idx = param->index % 8;370 371 if (pdev->revision < 4)372 return -ENOSYS;373 374 if (byte >= 58)375 return -ENOSYS;376 377 if (qdev->rom->client_capabilities[byte] & (1 << idx))378 return 0;379 return -ENOSYS;380}381 382int qxl_alloc_surf_ioctl(struct drm_device *dev, void *data, struct drm_file *file)383{384 struct qxl_device *qdev = to_qxl(dev);385 struct drm_qxl_alloc_surf *param = data;386 int handle;387 int ret;388 int size, actual_stride;389 struct qxl_surface surf;390 391 /* work out size allocate bo with handle */392 actual_stride = param->stride < 0 ? -param->stride : param->stride;393 size = actual_stride * param->height + actual_stride;394 395 surf.format = param->format;396 surf.width = param->width;397 surf.height = param->height;398 surf.stride = param->stride;399 surf.data = 0;400 401 ret = qxl_gem_object_create_with_handle(qdev, file,402 QXL_GEM_DOMAIN_SURFACE,403 size,404 &surf,405 NULL, &handle);406 if (ret) {407 DRM_ERROR("%s: failed to create gem ret=%d\n",408 __func__, ret);409 return -ENOMEM;410 } else411 param->handle = handle;412 return ret;413}414