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f64122c1 DA |
1 | /* |
2 | * Copyright © 2013 Red Hat | |
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 (including the next | |
12 | * paragraph) shall be included in all copies or substantial portions of the | |
13 | * Software. | |
14 | * | |
15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
18 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING | |
20 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER | |
21 | * DEALINGS IN THE SOFTWARE. | |
22 | * | |
23 | * Authors: | |
24 | * David Airlie | |
25 | */ | |
26 | #include <linux/module.h> | |
27 | #include <linux/fb.h> | |
28 | ||
29 | #include "drmP.h" | |
30 | #include "drm/drm.h" | |
31 | #include "drm/drm_crtc.h" | |
32 | #include "drm/drm_crtc_helper.h" | |
33 | #include "qxl_drv.h" | |
34 | ||
35 | #include "qxl_object.h" | |
36 | #include "drm_fb_helper.h" | |
37 | ||
38 | #define QXL_DIRTY_DELAY (HZ / 30) | |
39 | ||
40 | struct qxl_fbdev { | |
41 | struct drm_fb_helper helper; | |
42 | struct qxl_framebuffer qfb; | |
f64122c1 DA |
43 | struct qxl_device *qdev; |
44 | ||
0665f9f8 DA |
45 | spinlock_t delayed_ops_lock; |
46 | struct list_head delayed_ops; | |
f64122c1 DA |
47 | void *shadow; |
48 | int size; | |
f64122c1 DA |
49 | }; |
50 | ||
51 | static void qxl_fb_image_init(struct qxl_fb_image *qxl_fb_image, | |
52 | struct qxl_device *qdev, struct fb_info *info, | |
53 | const struct fb_image *image) | |
54 | { | |
55 | qxl_fb_image->qdev = qdev; | |
56 | if (info) { | |
57 | qxl_fb_image->visual = info->fix.visual; | |
58 | if (qxl_fb_image->visual == FB_VISUAL_TRUECOLOR || | |
59 | qxl_fb_image->visual == FB_VISUAL_DIRECTCOLOR) | |
60 | memcpy(&qxl_fb_image->pseudo_palette, | |
61 | info->pseudo_palette, | |
62 | sizeof(qxl_fb_image->pseudo_palette)); | |
63 | } else { | |
64 | /* fallback */ | |
65 | if (image->depth == 1) | |
66 | qxl_fb_image->visual = FB_VISUAL_MONO10; | |
67 | else | |
68 | qxl_fb_image->visual = FB_VISUAL_DIRECTCOLOR; | |
69 | } | |
70 | if (image) { | |
71 | memcpy(&qxl_fb_image->fb_image, image, | |
72 | sizeof(qxl_fb_image->fb_image)); | |
73 | } | |
74 | } | |
75 | ||
2b721f20 | 76 | #ifdef CONFIG_DRM_FBDEV_EMULATION |
6d01f1f5 | 77 | static struct fb_deferred_io qxl_defio = { |
f64122c1 | 78 | .delay = QXL_DIRTY_DELAY, |
6819c3c2 | 79 | .deferred_io = drm_fb_helper_deferred_io, |
f64122c1 | 80 | }; |
2b721f20 | 81 | #endif |
f64122c1 | 82 | |
f64122c1 DA |
83 | static struct fb_ops qxlfb_ops = { |
84 | .owner = THIS_MODULE, | |
85 | .fb_check_var = drm_fb_helper_check_var, | |
86 | .fb_set_par = drm_fb_helper_set_par, /* TODO: copy vmwgfx */ | |
6819c3c2 NT |
87 | .fb_fillrect = drm_fb_helper_sys_fillrect, |
88 | .fb_copyarea = drm_fb_helper_sys_copyarea, | |
89 | .fb_imageblit = drm_fb_helper_sys_imageblit, | |
f64122c1 DA |
90 | .fb_pan_display = drm_fb_helper_pan_display, |
91 | .fb_blank = drm_fb_helper_blank, | |
92 | .fb_setcmap = drm_fb_helper_setcmap, | |
93 | .fb_debug_enter = drm_fb_helper_debug_enter, | |
94 | .fb_debug_leave = drm_fb_helper_debug_leave, | |
95 | }; | |
96 | ||
97 | static void qxlfb_destroy_pinned_object(struct drm_gem_object *gobj) | |
98 | { | |
99 | struct qxl_bo *qbo = gem_to_qxl_bo(gobj); | |
100 | int ret; | |
101 | ||
102 | ret = qxl_bo_reserve(qbo, false); | |
103 | if (likely(ret == 0)) { | |
104 | qxl_bo_kunmap(qbo); | |
105 | qxl_bo_unpin(qbo); | |
106 | qxl_bo_unreserve(qbo); | |
107 | } | |
108 | drm_gem_object_unreference_unlocked(gobj); | |
109 | } | |
110 | ||
111 | int qxl_get_handle_for_primary_fb(struct qxl_device *qdev, | |
112 | struct drm_file *file_priv, | |
113 | uint32_t *handle) | |
114 | { | |
115 | int r; | |
116 | struct drm_gem_object *gobj = qdev->fbdev_qfb->obj; | |
117 | ||
118 | BUG_ON(!gobj); | |
119 | /* drm_get_handle_create adds a reference - good */ | |
120 | r = drm_gem_handle_create(file_priv, gobj, handle); | |
121 | if (r) | |
122 | return r; | |
123 | return 0; | |
124 | } | |
125 | ||
126 | static int qxlfb_create_pinned_object(struct qxl_fbdev *qfbdev, | |
1eb83451 | 127 | const struct drm_mode_fb_cmd2 *mode_cmd, |
f64122c1 DA |
128 | struct drm_gem_object **gobj_p) |
129 | { | |
130 | struct qxl_device *qdev = qfbdev->qdev; | |
131 | struct drm_gem_object *gobj = NULL; | |
132 | struct qxl_bo *qbo = NULL; | |
133 | int ret; | |
134 | int aligned_size, size; | |
135 | int height = mode_cmd->height; | |
f64122c1 DA |
136 | |
137 | size = mode_cmd->pitches[0] * height; | |
138 | aligned_size = ALIGN(size, PAGE_SIZE); | |
139 | /* TODO: unallocate and reallocate surface0 for real. Hack to just | |
140 | * have a large enough surface0 for 1024x768 Xorg 32bpp mode */ | |
141 | ret = qxl_gem_object_create(qdev, aligned_size, 0, | |
142 | QXL_GEM_DOMAIN_SURFACE, | |
143 | false, /* is discardable */ | |
144 | false, /* is kernel (false means device) */ | |
145 | NULL, | |
146 | &gobj); | |
147 | if (ret) { | |
148 | pr_err("failed to allocate framebuffer (%d)\n", | |
149 | aligned_size); | |
150 | return -ENOMEM; | |
151 | } | |
152 | qbo = gem_to_qxl_bo(gobj); | |
153 | ||
154 | qbo->surf.width = mode_cmd->width; | |
155 | qbo->surf.height = mode_cmd->height; | |
156 | qbo->surf.stride = mode_cmd->pitches[0]; | |
157 | qbo->surf.format = SPICE_SURFACE_FMT_32_xRGB; | |
158 | ret = qxl_bo_reserve(qbo, false); | |
159 | if (unlikely(ret != 0)) | |
160 | goto out_unref; | |
161 | ret = qxl_bo_pin(qbo, QXL_GEM_DOMAIN_SURFACE, NULL); | |
162 | if (ret) { | |
163 | qxl_bo_unreserve(qbo); | |
164 | goto out_unref; | |
165 | } | |
166 | ret = qxl_bo_kmap(qbo, NULL); | |
167 | qxl_bo_unreserve(qbo); /* unreserve, will be mmaped */ | |
168 | if (ret) | |
169 | goto out_unref; | |
170 | ||
171 | *gobj_p = gobj; | |
172 | return 0; | |
173 | out_unref: | |
174 | qxlfb_destroy_pinned_object(gobj); | |
175 | *gobj_p = NULL; | |
176 | return ret; | |
177 | } | |
178 | ||
6819c3c2 NT |
179 | /* |
180 | * FIXME | |
181 | * It should not be necessary to have a special dirty() callback for fbdev. | |
182 | */ | |
183 | static int qxlfb_framebuffer_dirty(struct drm_framebuffer *fb, | |
184 | struct drm_file *file_priv, | |
185 | unsigned flags, unsigned color, | |
186 | struct drm_clip_rect *clips, | |
187 | unsigned num_clips) | |
188 | { | |
189 | struct qxl_device *qdev = fb->dev->dev_private; | |
190 | struct fb_info *info = qdev->fbdev_info; | |
191 | struct qxl_fbdev *qfbdev = info->par; | |
192 | struct qxl_fb_image qxl_fb_image; | |
193 | struct fb_image *image = &qxl_fb_image.fb_image; | |
194 | ||
195 | /* TODO: hard coding 32 bpp */ | |
196 | int stride = qfbdev->qfb.base.pitches[0]; | |
197 | ||
198 | /* | |
199 | * we are using a shadow draw buffer, at qdev->surface0_shadow | |
200 | */ | |
201 | qxl_io_log(qdev, "dirty x[%d, %d], y[%d, %d]", clips->x1, clips->x2, | |
202 | clips->y1, clips->y2); | |
203 | image->dx = clips->x1; | |
204 | image->dy = clips->y1; | |
205 | image->width = clips->x2 - clips->x1; | |
206 | image->height = clips->y2 - clips->y1; | |
207 | image->fg_color = 0xffffffff; /* unused, just to avoid uninitialized | |
208 | warnings */ | |
209 | image->bg_color = 0; | |
210 | image->depth = 32; /* TODO: take from somewhere? */ | |
211 | image->cmap.start = 0; | |
212 | image->cmap.len = 0; | |
213 | image->cmap.red = NULL; | |
214 | image->cmap.green = NULL; | |
215 | image->cmap.blue = NULL; | |
216 | image->cmap.transp = NULL; | |
217 | image->data = qfbdev->shadow + (clips->x1 * 4) + (stride * clips->y1); | |
218 | ||
219 | qxl_fb_image_init(&qxl_fb_image, qdev, info, NULL); | |
220 | qxl_draw_opaque_fb(&qxl_fb_image, stride); | |
221 | ||
222 | return 0; | |
223 | } | |
224 | ||
225 | static const struct drm_framebuffer_funcs qxlfb_fb_funcs = { | |
226 | .destroy = qxl_user_framebuffer_destroy, | |
227 | .dirty = qxlfb_framebuffer_dirty, | |
228 | }; | |
229 | ||
f64122c1 DA |
230 | static int qxlfb_create(struct qxl_fbdev *qfbdev, |
231 | struct drm_fb_helper_surface_size *sizes) | |
232 | { | |
233 | struct qxl_device *qdev = qfbdev->qdev; | |
234 | struct fb_info *info; | |
235 | struct drm_framebuffer *fb = NULL; | |
236 | struct drm_mode_fb_cmd2 mode_cmd; | |
237 | struct drm_gem_object *gobj = NULL; | |
238 | struct qxl_bo *qbo = NULL; | |
f64122c1 DA |
239 | int ret; |
240 | int size; | |
241 | int bpp = sizes->surface_bpp; | |
242 | int depth = sizes->surface_depth; | |
243 | void *shadow; | |
244 | ||
245 | mode_cmd.width = sizes->surface_width; | |
246 | mode_cmd.height = sizes->surface_height; | |
247 | ||
248 | mode_cmd.pitches[0] = ALIGN(mode_cmd.width * ((bpp + 1) / 8), 64); | |
249 | mode_cmd.pixel_format = drm_mode_legacy_fb_format(bpp, depth); | |
250 | ||
251 | ret = qxlfb_create_pinned_object(qfbdev, &mode_cmd, &gobj); | |
2d6b1d40 GH |
252 | if (ret < 0) |
253 | return ret; | |
254 | ||
f64122c1 DA |
255 | qbo = gem_to_qxl_bo(gobj); |
256 | QXL_INFO(qdev, "%s: %dx%d %d\n", __func__, mode_cmd.width, | |
257 | mode_cmd.height, mode_cmd.pitches[0]); | |
258 | ||
259 | shadow = vmalloc(mode_cmd.pitches[0] * mode_cmd.height); | |
260 | /* TODO: what's the usual response to memory allocation errors? */ | |
261 | BUG_ON(!shadow); | |
262 | QXL_INFO(qdev, | |
263 | "surface0 at gpu offset %lld, mmap_offset %lld (virt %p, shadow %p)\n", | |
264 | qxl_bo_gpu_offset(qbo), | |
265 | qxl_bo_mmap_offset(qbo), | |
266 | qbo->kptr, | |
267 | shadow); | |
268 | size = mode_cmd.pitches[0] * mode_cmd.height; | |
269 | ||
e7cd84cf AT |
270 | info = drm_fb_helper_alloc_fbi(&qfbdev->helper); |
271 | if (IS_ERR(info)) { | |
272 | ret = PTR_ERR(info); | |
f64122c1 DA |
273 | goto out_unref; |
274 | } | |
275 | ||
276 | info->par = qfbdev; | |
277 | ||
6819c3c2 NT |
278 | qxl_framebuffer_init(qdev->ddev, &qfbdev->qfb, &mode_cmd, gobj, |
279 | &qxlfb_fb_funcs); | |
f64122c1 DA |
280 | |
281 | fb = &qfbdev->qfb.base; | |
282 | ||
283 | /* setup helper with fb data */ | |
284 | qfbdev->helper.fb = fb; | |
e7cd84cf | 285 | |
f64122c1 DA |
286 | qfbdev->shadow = shadow; |
287 | strcpy(info->fix.id, "qxldrmfb"); | |
288 | ||
289 | drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth); | |
290 | ||
291 | info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT; | |
292 | info->fbops = &qxlfb_ops; | |
293 | ||
294 | /* | |
295 | * TODO: using gobj->size in various places in this function. Not sure | |
296 | * what the difference between the different sizes is. | |
297 | */ | |
298 | info->fix.smem_start = qdev->vram_base; /* TODO - correct? */ | |
299 | info->fix.smem_len = gobj->size; | |
300 | info->screen_base = qfbdev->shadow; | |
301 | info->screen_size = gobj->size; | |
302 | ||
303 | drm_fb_helper_fill_var(info, &qfbdev->helper, sizes->fb_width, | |
304 | sizes->fb_height); | |
305 | ||
306 | /* setup aperture base/size for vesafb takeover */ | |
f64122c1 DA |
307 | info->apertures->ranges[0].base = qdev->ddev->mode_config.fb_base; |
308 | info->apertures->ranges[0].size = qdev->vram_size; | |
309 | ||
310 | info->fix.mmio_start = 0; | |
311 | info->fix.mmio_len = 0; | |
312 | ||
313 | if (info->screen_base == NULL) { | |
314 | ret = -ENOSPC; | |
e7cd84cf | 315 | goto out_destroy_fbi; |
f64122c1 DA |
316 | } |
317 | ||
2b721f20 | 318 | #ifdef CONFIG_DRM_FBDEV_EMULATION |
f64122c1 DA |
319 | info->fbdefio = &qxl_defio; |
320 | fb_deferred_io_init(info); | |
2b721f20 | 321 | #endif |
f64122c1 DA |
322 | |
323 | qdev->fbdev_info = info; | |
324 | qdev->fbdev_qfb = &qfbdev->qfb; | |
325 | DRM_INFO("fb mappable at 0x%lX, size %lu\n", info->fix.smem_start, (unsigned long)info->screen_size); | |
326 | DRM_INFO("fb: depth %d, pitch %d, width %d, height %d\n", fb->depth, fb->pitches[0], fb->width, fb->height); | |
327 | return 0; | |
328 | ||
e7cd84cf AT |
329 | out_destroy_fbi: |
330 | drm_fb_helper_release_fbi(&qfbdev->helper); | |
f64122c1 DA |
331 | out_unref: |
332 | if (qbo) { | |
333 | ret = qxl_bo_reserve(qbo, false); | |
334 | if (likely(ret == 0)) { | |
335 | qxl_bo_kunmap(qbo); | |
336 | qxl_bo_unpin(qbo); | |
337 | qxl_bo_unreserve(qbo); | |
338 | } | |
339 | } | |
340 | if (fb && ret) { | |
068149ad | 341 | drm_gem_object_unreference_unlocked(gobj); |
f64122c1 DA |
342 | drm_framebuffer_cleanup(fb); |
343 | kfree(fb); | |
344 | } | |
068149ad | 345 | drm_gem_object_unreference_unlocked(gobj); |
f64122c1 DA |
346 | return ret; |
347 | } | |
348 | ||
349 | static int qxl_fb_find_or_create_single( | |
350 | struct drm_fb_helper *helper, | |
351 | struct drm_fb_helper_surface_size *sizes) | |
352 | { | |
f38e34ac FF |
353 | struct qxl_fbdev *qfbdev = |
354 | container_of(helper, struct qxl_fbdev, helper); | |
f64122c1 DA |
355 | int new_fb = 0; |
356 | int ret; | |
357 | ||
358 | if (!helper->fb) { | |
359 | ret = qxlfb_create(qfbdev, sizes); | |
360 | if (ret) | |
361 | return ret; | |
362 | new_fb = 1; | |
363 | } | |
364 | return new_fb; | |
365 | } | |
366 | ||
367 | static int qxl_fbdev_destroy(struct drm_device *dev, struct qxl_fbdev *qfbdev) | |
368 | { | |
f64122c1 DA |
369 | struct qxl_framebuffer *qfb = &qfbdev->qfb; |
370 | ||
e7cd84cf AT |
371 | drm_fb_helper_unregister_fbi(&qfbdev->helper); |
372 | drm_fb_helper_release_fbi(&qfbdev->helper); | |
f64122c1 | 373 | |
f64122c1 DA |
374 | if (qfb->obj) { |
375 | qxlfb_destroy_pinned_object(qfb->obj); | |
376 | qfb->obj = NULL; | |
377 | } | |
378 | drm_fb_helper_fini(&qfbdev->helper); | |
379 | vfree(qfbdev->shadow); | |
380 | drm_framebuffer_cleanup(&qfb->base); | |
381 | ||
382 | return 0; | |
383 | } | |
384 | ||
3a493879 | 385 | static const struct drm_fb_helper_funcs qxl_fb_helper_funcs = { |
f64122c1 DA |
386 | .fb_probe = qxl_fb_find_or_create_single, |
387 | }; | |
388 | ||
389 | int qxl_fbdev_init(struct qxl_device *qdev) | |
390 | { | |
391 | struct qxl_fbdev *qfbdev; | |
392 | int bpp_sel = 32; /* TODO: parameter from somewhere? */ | |
393 | int ret; | |
394 | ||
395 | qfbdev = kzalloc(sizeof(struct qxl_fbdev), GFP_KERNEL); | |
396 | if (!qfbdev) | |
397 | return -ENOMEM; | |
398 | ||
399 | qfbdev->qdev = qdev; | |
400 | qdev->mode_info.qfbdev = qfbdev; | |
0665f9f8 DA |
401 | spin_lock_init(&qfbdev->delayed_ops_lock); |
402 | INIT_LIST_HEAD(&qfbdev->delayed_ops); | |
10a23102 TR |
403 | |
404 | drm_fb_helper_prepare(qdev->ddev, &qfbdev->helper, | |
405 | &qxl_fb_helper_funcs); | |
406 | ||
f64122c1 | 407 | ret = drm_fb_helper_init(qdev->ddev, &qfbdev->helper, |
07f8d9bd | 408 | qxl_num_crtc /* num_crtc - QXL supports just 1 */, |
f64122c1 | 409 | QXLFB_CONN_LIMIT); |
01934c2a TR |
410 | if (ret) |
411 | goto free; | |
412 | ||
413 | ret = drm_fb_helper_single_add_all_connectors(&qfbdev->helper); | |
414 | if (ret) | |
415 | goto fini; | |
416 | ||
417 | ret = drm_fb_helper_initial_config(&qfbdev->helper, bpp_sel); | |
418 | if (ret) | |
419 | goto fini; | |
f64122c1 | 420 | |
f64122c1 | 421 | return 0; |
01934c2a TR |
422 | |
423 | fini: | |
424 | drm_fb_helper_fini(&qfbdev->helper); | |
425 | free: | |
426 | kfree(qfbdev); | |
427 | return ret; | |
f64122c1 DA |
428 | } |
429 | ||
430 | void qxl_fbdev_fini(struct qxl_device *qdev) | |
431 | { | |
432 | if (!qdev->mode_info.qfbdev) | |
433 | return; | |
434 | ||
435 | qxl_fbdev_destroy(qdev->ddev, qdev->mode_info.qfbdev); | |
436 | kfree(qdev->mode_info.qfbdev); | |
437 | qdev->mode_info.qfbdev = NULL; | |
438 | } | |
439 | ||
b86487a6 DA |
440 | void qxl_fbdev_set_suspend(struct qxl_device *qdev, int state) |
441 | { | |
e7cd84cf | 442 | drm_fb_helper_set_suspend(&qdev->mode_info.qfbdev->helper, state); |
b86487a6 | 443 | } |
f64122c1 | 444 | |
b86487a6 DA |
445 | bool qxl_fbdev_qobj_is_fb(struct qxl_device *qdev, struct qxl_bo *qobj) |
446 | { | |
447 | if (qobj == gem_to_qxl_bo(qdev->mode_info.qfbdev->qfb.obj)) | |
448 | return true; | |
449 | return false; | |
450 | } |