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 <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 | */ |
36 | int 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 | size: qxl_alloc->size, |
51 | NULL, |
52 | NULL, handle: &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 | |
62 | int 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: file_priv, dev: &qdev->ddev, handle: qxl_map->handle, |
68 | offset: &qxl_map->offset); |
69 | } |
70 | |
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 | |
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 |
85 | apply_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, bo: info->dst_bo, page_offset: info->dst_offset & PAGE_MASK); |
90 | *(uint64_t *)(reloc_page + (info->dst_offset & ~PAGE_MASK)) = qxl_bo_physical_address(qdev, |
91 | bo: info->src_bo, |
92 | offset: info->src_offset); |
93 | qxl_bo_kunmap_atomic_page(qdev, bo: info->dst_bo, map: reloc_page); |
94 | } |
95 | |
96 | static void |
97 | apply_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, bo: info->dst_bo, page_offset: info->dst_offset & PAGE_MASK); |
106 | *(uint32_t *)(reloc_page + (info->dst_offset & ~PAGE_MASK)) = id; |
107 | qxl_bo_kunmap_atomic_page(qdev, bo: info->dst_bo, map: reloc_page); |
108 | } |
109 | |
110 | /* return holding the reference to this object */ |
111 | static 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(filp: 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, bo: qobj); |
125 | drm_gem_object_put(obj: 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 initial |
137 | * QXLReleaseInfo struct (first XXX bytes) |
138 | */ |
139 | static 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(n: cmd->relocs_num, |
170 | size: sizeof(struct qxl_reloc_info), GFP_KERNEL); |
171 | if (!reloc_info) |
172 | return -ENOMEM; |
173 | |
174 | ret = qxl_alloc_release_reserved(qdev, |
175 | size: sizeof(union qxl_release_info) + |
176 | cmd->command_size, |
177 | type: release_type, |
178 | release: &release, |
179 | rbo: &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, bo: cmd_bo, page_offset: (release->release_offset & PAGE_MASK)); |
185 | unwritten = __copy_from_user_inatomic_nocache |
186 | (dst: fb_cmd + sizeof(union qxl_release_info) + (release->release_offset & ~PAGE_MASK), |
187 | u64_to_user_ptr(cmd->command), size: 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, bo: cmd_bo, map: 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(to: &reloc, from: u + i, n: 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, handle: reloc.dst_handle, release, |
224 | qbo_p: &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, handle: reloc.src_handle, release, |
236 | qbo_p: &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, no_intr: 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, info: &reloc_info[i]); |
254 | else if (reloc_info[i].type == QXL_RELOC_TYPE_SURF) |
255 | apply_surf_reloc(qdev, info: &reloc_info[i]); |
256 | } |
257 | |
258 | qxl_release_fence_buffer_objects(release); |
259 | ret = qxl_push_command_ring_release(qdev, release, type: cmd->type, interruptible: true); |
260 | |
261 | out_free_bos: |
262 | out_free_release: |
263 | if (ret) |
264 | qxl_release_free(qdev, release); |
265 | out_free_reloc: |
266 | kfree(objp: reloc_info); |
267 | return ret; |
268 | } |
269 | |
270 | int 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(to: &user_cmd, from: commands + cmd_num, |
284 | n: sizeof(user_cmd))) |
285 | return -EFAULT; |
286 | |
287 | ret = qxl_process_single_command(qdev, cmd: &user_cmd, file_priv); |
288 | if (ret) |
289 | return ret; |
290 | } |
291 | return 0; |
292 | } |
293 | |
294 | int 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(filp: file, handle: update_area->handle); |
312 | if (gobj == NULL) |
313 | return -ENOENT; |
314 | |
315 | qobj = gem_to_qxl_bo(gobj); |
316 | |
317 | ret = qxl_bo_reserve(bo: qobj); |
318 | if (ret) |
319 | goto out; |
320 | |
321 | if (!qobj->tbo.pin_count) { |
322 | qxl_ttm_placement_from_domain(qbo: qobj, domain: qobj->type); |
323 | ret = ttm_bo_validate(bo: &qobj->tbo, placement: &qobj->placement, ctx: &ctx); |
324 | if (unlikely(ret)) |
325 | goto out; |
326 | } |
327 | |
328 | ret = qxl_bo_check_id(qdev, bo: 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, surf: qobj, area: &area); |
334 | |
335 | out2: |
336 | qxl_bo_unreserve(bo: qobj); |
337 | |
338 | out: |
339 | drm_gem_object_put(obj: gobj); |
340 | return ret; |
341 | } |
342 | |
343 | int 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 | |
361 | int 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 | |
382 | int 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_priv: file, |
402 | QXL_GEM_DOMAIN_SURFACE, |
403 | size, |
404 | surf: &surf, |
405 | NULL, handle: &handle); |
406 | if (ret) { |
407 | DRM_ERROR("%s: failed to create gem ret=%d\n" , |
408 | __func__, ret); |
409 | return -ENOMEM; |
410 | } else |
411 | param->handle = handle; |
412 | return ret; |
413 | } |
414 | |