1 /*
2 * Copyright © 2007 David Airlie
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 #include <linux/pm_runtime.h>
29
30 #include <drm/drmP.h>
31 #include <drm/drm_crtc.h>
32 #include <drm/drm_crtc_helper.h>
33 #include <drm/radeon_drm.h>
34 #include "radeon.h"
35
36 #include <drm/drm_fb_helper.h>
37
38 #include <linux/vga_switcheroo.h>
39
40 /* object hierarchy -
41 * this contains a helper + a radeon fb
42 * the helper contains a pointer to radeon framebuffer baseclass.
43 */
44 struct radeon_fbdev {
45 struct drm_fb_helper helper;
46 struct radeon_framebuffer rfb;
47 struct radeon_device *rdev;
48 };
49
50 #if 0
51 static int
52 radeonfb_open(struct fb_info *info, int user)
53 {
54 struct radeon_fbdev *rfbdev = info->par;
55 struct radeon_device *rdev = rfbdev->rdev;
56 int ret = pm_runtime_get_sync(rdev->ddev->dev);
57 if (ret < 0 && ret != -EACCES) {
58 pm_runtime_mark_last_busy(rdev->ddev->dev);
59 pm_runtime_put_autosuspend(rdev->ddev->dev);
60 return ret;
61 }
62 return 0;
63 }
64
65 static int
66 radeonfb_release(struct fb_info *info, int user)
67 {
68 struct radeon_fbdev *rfbdev = info->par;
69 struct radeon_device *rdev = rfbdev->rdev;
70
71 pm_runtime_mark_last_busy(rdev->ddev->dev);
72 pm_runtime_put_autosuspend(rdev->ddev->dev);
73 return 0;
74 }
75 #endif
76
77 static struct fb_ops radeonfb_ops = {
78 #if 0
79 .owner = THIS_MODULE,
80 #endif
81 DRM_FB_HELPER_DEFAULT_OPS,
82 #if 0
83 .fb_open = radeonfb_open,
84 .fb_release = radeonfb_release,
85 #endif
86 #if 0
87 .fb_fillrect = drm_fb_helper_cfb_fillrect,
88 .fb_copyarea = drm_fb_helper_cfb_copyarea,
89 .fb_imageblit = drm_fb_helper_cfb_imageblit,
90 #endif
91 };
92
93
radeon_align_pitch(struct radeon_device * rdev,int width,int cpp,bool tiled)94 int radeon_align_pitch(struct radeon_device *rdev, int width, int cpp, bool tiled)
95 {
96 int aligned = width;
97 int align_large = (ASIC_IS_AVIVO(rdev)) || tiled;
98 int pitch_mask = 0;
99
100 switch (cpp) {
101 case 1:
102 pitch_mask = align_large ? 255 : 127;
103 break;
104 case 2:
105 pitch_mask = align_large ? 127 : 31;
106 break;
107 case 3:
108 case 4:
109 pitch_mask = align_large ? 63 : 15;
110 break;
111 }
112
113 aligned += pitch_mask;
114 aligned &= ~pitch_mask;
115 return aligned * cpp;
116 }
117
radeonfb_destroy_pinned_object(struct drm_gem_object * gobj)118 static void radeonfb_destroy_pinned_object(struct drm_gem_object *gobj)
119 {
120 struct radeon_bo *rbo = gem_to_radeon_bo(gobj);
121 int ret;
122
123 ret = radeon_bo_reserve(rbo, false);
124 if (likely(ret == 0)) {
125 radeon_bo_kunmap(rbo);
126 radeon_bo_unpin(rbo);
127 radeon_bo_unreserve(rbo);
128 }
129 drm_gem_object_put_unlocked(gobj);
130 }
131
radeonfb_create_pinned_object(struct radeon_fbdev * rfbdev,struct drm_mode_fb_cmd2 * mode_cmd,struct drm_gem_object ** gobj_p)132 static int radeonfb_create_pinned_object(struct radeon_fbdev *rfbdev,
133 struct drm_mode_fb_cmd2 *mode_cmd,
134 struct drm_gem_object **gobj_p)
135 {
136 struct radeon_device *rdev = rfbdev->rdev;
137 struct drm_gem_object *gobj = NULL;
138 struct radeon_bo *rbo = NULL;
139 bool fb_tiled = false; /* useful for testing */
140 u32 tiling_flags = 0;
141 int ret;
142 int aligned_size, size;
143 int height = mode_cmd->height;
144 u32 cpp;
145
146 cpp = drm_format_plane_cpp(mode_cmd->pixel_format, 0);
147
148 /* need to align pitch with crtc limits */
149 mode_cmd->pitches[0] = radeon_align_pitch(rdev, mode_cmd->width, cpp,
150 fb_tiled);
151
152 if (rdev->family >= CHIP_R600)
153 height = ALIGN(mode_cmd->height, 8);
154 size = mode_cmd->pitches[0] * height;
155 aligned_size = ALIGN(size, PAGE_SIZE);
156 ret = radeon_gem_object_create(rdev, aligned_size, 0,
157 RADEON_GEM_DOMAIN_VRAM,
158 0, true, &gobj);
159 if (ret) {
160 pr_err("failed to allocate framebuffer (%d)\n", aligned_size);
161 return -ENOMEM;
162 }
163 rbo = gem_to_radeon_bo(gobj);
164
165 if (fb_tiled)
166 tiling_flags = RADEON_TILING_MACRO;
167
168 #ifdef __BIG_ENDIAN
169 switch (cpp) {
170 case 4:
171 tiling_flags |= RADEON_TILING_SWAP_32BIT;
172 break;
173 case 2:
174 tiling_flags |= RADEON_TILING_SWAP_16BIT;
175 default:
176 break;
177 }
178 #endif
179
180 if (tiling_flags) {
181 ret = radeon_bo_set_tiling_flags(rbo,
182 tiling_flags | RADEON_TILING_SURFACE,
183 mode_cmd->pitches[0]);
184 if (ret)
185 dev_err(rdev->dev, "FB failed to set tiling flags\n");
186 }
187
188
189 ret = radeon_bo_reserve(rbo, false);
190 if (unlikely(ret != 0))
191 goto out_unref;
192 /* Only 27 bit offset for legacy CRTC */
193 ret = radeon_bo_pin_restricted(rbo, RADEON_GEM_DOMAIN_VRAM,
194 ASIC_IS_AVIVO(rdev) ? 0 : 1 << 27,
195 NULL);
196 if (ret) {
197 radeon_bo_unreserve(rbo);
198 goto out_unref;
199 }
200 if (fb_tiled)
201 radeon_bo_check_tiling(rbo, 0, 0);
202 ret = radeon_bo_kmap(rbo, NULL);
203 radeon_bo_unreserve(rbo);
204 if (ret) {
205 goto out_unref;
206 }
207
208 *gobj_p = gobj;
209 return 0;
210 out_unref:
211 radeonfb_destroy_pinned_object(gobj);
212 *gobj_p = NULL;
213 return ret;
214 }
215
radeonfb_create(struct drm_fb_helper * helper,struct drm_fb_helper_surface_size * sizes)216 static int radeonfb_create(struct drm_fb_helper *helper,
217 struct drm_fb_helper_surface_size *sizes)
218 {
219 struct radeon_fbdev *rfbdev =
220 container_of(helper, struct radeon_fbdev, helper);
221 struct radeon_device *rdev = rfbdev->rdev;
222 struct fb_info *info;
223 struct drm_framebuffer *fb = NULL;
224 struct drm_mode_fb_cmd2 mode_cmd;
225 struct drm_gem_object *gobj = NULL;
226 struct radeon_bo *rbo = NULL;
227 int ret;
228 device_t vga_dev = device_get_parent(rdev->dev->bsddev);
229
230 mode_cmd.width = sizes->surface_width;
231 mode_cmd.height = sizes->surface_height;
232
233 /* avivo can't scanout real 24bpp */
234 if ((sizes->surface_bpp == 24) && ASIC_IS_AVIVO(rdev))
235 sizes->surface_bpp = 32;
236
237 mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
238 sizes->surface_depth);
239
240 ret = radeonfb_create_pinned_object(rfbdev, &mode_cmd, &gobj);
241 if (ret) {
242 DRM_ERROR("failed to create fbcon object %d\n", ret);
243 return ret;
244 }
245
246 rbo = gem_to_radeon_bo(gobj);
247
248 /* okay we have an object now allocate the framebuffer */
249 info = drm_fb_helper_alloc_fbi(helper);
250 if (IS_ERR(info)) {
251 ret = PTR_ERR(info);
252 goto out;
253 }
254
255 info->par = rfbdev;
256
257 ret = radeon_framebuffer_init(rdev->ddev, &rfbdev->rfb, &mode_cmd, gobj);
258 if (ret) {
259 DRM_ERROR("failed to initialize framebuffer %d\n", ret);
260 goto out;
261 }
262
263 fb = &rfbdev->rfb.base;
264
265 /* setup helper */
266 rfbdev->helper.fb = fb;
267
268 memset_io(rbo->kptr, 0x0, radeon_bo_size(rbo));
269
270 #ifdef __DragonFly__
271 info->width = sizes->fb_width;
272 info->height = sizes->fb_height;
273 info->stride = fb->pitches[0];
274 info->depth = sizes->surface_bpp;
275 info->is_vga_boot_display = vga_pci_is_boot_display(vga_dev);
276 info->fbops = radeonfb_ops;
277 /* We use info->screen_base and info->screen_size would-be values */
278 #if 0
279 info->paddr = (vm_paddr_t)rbo->kptr;
280 info->vaddr = (vm_offset_t)pmap_mapdev_attr(info->paddr,
281 radeon_bo_size(rbo),
282 VM_MEMATTR_WRITE_COMBINING);
283 #endif
284 unsigned long tmp = radeon_bo_gpu_offset(rbo) - rdev->mc.vram_start;
285 info->vaddr = (vm_offset_t)rbo->kptr;
286 info->paddr = rdev->mc.aper_base + tmp;
287 #else
288 strcpy(info->fix.id, "radeondrmfb");
289
290 drm_fb_helper_fill_fix(info, fb->pitches[0], fb->format->depth);
291
292 info->fbops = &radeonfb_ops;
293
294 tmp = radeon_bo_gpu_offset(rbo) - rdev->mc.vram_start;
295 info->fix.smem_start = rdev->mc.aper_base + tmp;
296 info->fix.smem_len = radeon_bo_size(rbo);
297 info->screen_base = rbo->kptr;
298 info->screen_size = radeon_bo_size(rbo);
299
300 drm_fb_helper_fill_var(info, &rfbdev->helper, sizes->fb_width, sizes->fb_height);
301
302 /* setup aperture base/size for vesafb takeover */
303 info->apertures->ranges[0].base = rdev->ddev->mode_config.fb_base;
304 info->apertures->ranges[0].size = rdev->mc.aper_size;
305
306 /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
307
308 if (info->screen_base == NULL) {
309 ret = -ENOSPC;
310 goto out;
311 }
312 #endif
313
314 DRM_INFO("fb mappable at 0x%jX\n", info->paddr);
315 DRM_INFO("vram apper at 0x%lX\n", (unsigned long)rdev->mc.aper_base);
316 DRM_INFO("size %lu\n", (unsigned long)radeon_bo_size(rbo));
317 DRM_INFO("fb depth is %d\n", fb->format->depth);
318 DRM_INFO(" pitch is %d\n", fb->pitches[0]);
319
320 vga_switcheroo_client_fb_set(rdev->ddev->pdev, info);
321 return 0;
322
323 out:
324 if (rbo) {
325
326 }
327 if (fb && ret) {
328 drm_gem_object_put_unlocked(gobj);
329 drm_framebuffer_unregister_private(fb);
330 drm_framebuffer_cleanup(fb);
331 kfree(fb);
332 }
333 return ret;
334 }
335
radeon_fb_output_poll_changed(struct radeon_device * rdev)336 void radeon_fb_output_poll_changed(struct radeon_device *rdev)
337 {
338 if (rdev->mode_info.rfbdev)
339 drm_fb_helper_hotplug_event(&rdev->mode_info.rfbdev->helper);
340 }
341
radeon_fbdev_destroy(struct drm_device * dev,struct radeon_fbdev * rfbdev)342 static int radeon_fbdev_destroy(struct drm_device *dev, struct radeon_fbdev *rfbdev)
343 {
344 struct radeon_framebuffer *rfb = &rfbdev->rfb;
345
346 drm_fb_helper_unregister_fbi(&rfbdev->helper);
347
348 if (rfb->obj) {
349 radeonfb_destroy_pinned_object(rfb->obj);
350 rfb->obj = NULL;
351 drm_framebuffer_unregister_private(&rfb->base);
352 drm_framebuffer_cleanup(&rfb->base);
353 }
354 drm_fb_helper_fini(&rfbdev->helper);
355
356 return 0;
357 }
358
359 static const struct drm_fb_helper_funcs radeon_fb_helper_funcs = {
360 .fb_probe = radeonfb_create,
361 };
362
radeon_fbdev_init(struct radeon_device * rdev)363 int radeon_fbdev_init(struct radeon_device *rdev)
364 {
365 struct radeon_fbdev *rfbdev;
366 int bpp_sel = 32;
367 int ret;
368
369 /* don't enable fbdev if no connectors */
370 if (list_empty(&rdev->ddev->mode_config.connector_list))
371 return 0;
372
373 /* select 8 bpp console on 8MB cards, or 16 bpp on RN50 or 32MB */
374 if (rdev->mc.real_vram_size <= (8*1024*1024))
375 bpp_sel = 8;
376 else if (ASIC_IS_RN50(rdev) ||
377 rdev->mc.real_vram_size <= (32*1024*1024))
378 bpp_sel = 16;
379
380 rfbdev = kzalloc(sizeof(struct radeon_fbdev), GFP_KERNEL);
381 if (!rfbdev)
382 return -ENOMEM;
383
384 rfbdev->rdev = rdev;
385 rdev->mode_info.rfbdev = rfbdev;
386
387 drm_fb_helper_prepare(rdev->ddev, &rfbdev->helper,
388 &radeon_fb_helper_funcs);
389
390 ret = drm_fb_helper_init(rdev->ddev, &rfbdev->helper,
391 RADEONFB_CONN_LIMIT);
392 if (ret)
393 goto free;
394
395 ret = drm_fb_helper_single_add_all_connectors(&rfbdev->helper);
396 if (ret)
397 goto fini;
398
399 /* disable all the possible outputs/crtcs before entering KMS mode */
400 drm_helper_disable_unused_functions(rdev->ddev);
401
402 ret = drm_fb_helper_initial_config(&rfbdev->helper, bpp_sel);
403 if (ret)
404 goto fini;
405
406 return 0;
407
408 fini:
409 drm_fb_helper_fini(&rfbdev->helper);
410 free:
411 kfree(rfbdev);
412 return ret;
413 }
414
radeon_fbdev_fini(struct radeon_device * rdev)415 void radeon_fbdev_fini(struct radeon_device *rdev)
416 {
417 if (!rdev->mode_info.rfbdev)
418 return;
419
420 radeon_fbdev_destroy(rdev->ddev, rdev->mode_info.rfbdev);
421 kfree(rdev->mode_info.rfbdev);
422 rdev->mode_info.rfbdev = NULL;
423 }
424
radeon_fbdev_set_suspend(struct radeon_device * rdev,int state)425 void radeon_fbdev_set_suspend(struct radeon_device *rdev, int state)
426 {
427 #ifdef DUMBBELL_WIP
428 if (rdev->mode_info.rfbdev)
429 drm_fb_helper_set_suspend(&rdev->mode_info.rfbdev->helper, state);
430 #endif /* DUMBBELL_WIP */
431 }
432
radeon_fbdev_robj_is_fb(struct radeon_device * rdev,struct radeon_bo * robj)433 bool radeon_fbdev_robj_is_fb(struct radeon_device *rdev, struct radeon_bo *robj)
434 {
435 if (!rdev->mode_info.rfbdev)
436 return false;
437
438 if (robj == gem_to_radeon_bo(rdev->mode_info.rfbdev->rfb.obj))
439 return true;
440 return false;
441 }
442
radeon_fb_add_connector(struct radeon_device * rdev,struct drm_connector * connector)443 void radeon_fb_add_connector(struct radeon_device *rdev, struct drm_connector *connector)
444 {
445 if (rdev->mode_info.rfbdev)
446 drm_fb_helper_add_one_connector(&rdev->mode_info.rfbdev->helper, connector);
447 }
448
radeon_fb_remove_connector(struct radeon_device * rdev,struct drm_connector * connector)449 void radeon_fb_remove_connector(struct radeon_device *rdev, struct drm_connector *connector)
450 {
451 if (rdev->mode_info.rfbdev)
452 drm_fb_helper_remove_one_connector(&rdev->mode_info.rfbdev->helper, connector);
453 }
454
radeon_fbdev_restore_mode(struct radeon_device * rdev)455 void radeon_fbdev_restore_mode(struct radeon_device *rdev)
456 {
457 struct radeon_fbdev *rfbdev = rdev->mode_info.rfbdev;
458 struct drm_fb_helper *fb_helper;
459 int ret;
460
461 if (!rfbdev)
462 return;
463
464 fb_helper = &rfbdev->helper;
465
466 ret = drm_fb_helper_restore_fbdev_mode_unlocked(fb_helper);
467 if (ret)
468 DRM_DEBUG("failed to restore crtc mode\n");
469 }
470