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4d8d096e AC |
1 | /************************************************************************** |
2 | * Copyright (c) 2007-2011, Intel Corporation. | |
3 | * All Rights Reserved. | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify it | |
6 | * under the terms and conditions of the GNU General Public License, | |
7 | * version 2, as published by the Free Software Foundation. | |
8 | * | |
9 | * This program is distributed in the hope it will be useful, but WITHOUT | |
10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
12 | * more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License along with | |
15 | * this program; if not, write to the Free Software Foundation, Inc., | |
16 | * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. | |
17 | * | |
18 | **************************************************************************/ | |
19 | ||
20 | #include <linux/module.h> | |
21 | #include <linux/kernel.h> | |
22 | #include <linux/errno.h> | |
23 | #include <linux/string.h> | |
24 | #include <linux/mm.h> | |
25 | #include <linux/tty.h> | |
26 | #include <linux/slab.h> | |
27 | #include <linux/delay.h> | |
28 | #include <linux/fb.h> | |
29 | #include <linux/init.h> | |
30 | #include <linux/console.h> | |
31 | ||
32 | #include <drm/drmP.h> | |
33 | #include <drm/drm.h> | |
34 | #include <drm/drm_crtc.h> | |
a9a644ac | 35 | #include <drm/drm_fb_helper.h> |
4d8d096e AC |
36 | |
37 | #include "psb_drv.h" | |
38 | #include "psb_intel_reg.h" | |
39 | #include "psb_intel_drv.h" | |
40 | #include "framebuffer.h" | |
a6ba582d | 41 | #include "gtt.h" |
4d8d096e AC |
42 | |
43 | static void psb_user_framebuffer_destroy(struct drm_framebuffer *fb); | |
44 | static int psb_user_framebuffer_create_handle(struct drm_framebuffer *fb, | |
45 | struct drm_file *file_priv, | |
46 | unsigned int *handle); | |
47 | ||
48 | static const struct drm_framebuffer_funcs psb_fb_funcs = { | |
49 | .destroy = psb_user_framebuffer_destroy, | |
50 | .create_handle = psb_user_framebuffer_create_handle, | |
51 | }; | |
52 | ||
53 | #define CMAP_TOHW(_val, _width) ((((_val) << (_width)) + 0x7FFF - (_val)) >> 16) | |
54 | ||
55 | static int psbfb_setcolreg(unsigned regno, unsigned red, unsigned green, | |
56 | unsigned blue, unsigned transp, | |
57 | struct fb_info *info) | |
58 | { | |
59 | struct psb_fbdev *fbdev = info->par; | |
60 | struct drm_framebuffer *fb = fbdev->psb_fb_helper.fb; | |
61 | uint32_t v; | |
62 | ||
63 | if (!fb) | |
64 | return -ENOMEM; | |
65 | ||
66 | if (regno > 255) | |
67 | return 1; | |
68 | ||
69 | red = CMAP_TOHW(red, info->var.red.length); | |
70 | blue = CMAP_TOHW(blue, info->var.blue.length); | |
71 | green = CMAP_TOHW(green, info->var.green.length); | |
72 | transp = CMAP_TOHW(transp, info->var.transp.length); | |
73 | ||
74 | v = (red << info->var.red.offset) | | |
75 | (green << info->var.green.offset) | | |
76 | (blue << info->var.blue.offset) | | |
77 | (transp << info->var.transp.offset); | |
78 | ||
79 | if (regno < 16) { | |
80 | switch (fb->bits_per_pixel) { | |
81 | case 16: | |
82 | ((uint32_t *) info->pseudo_palette)[regno] = v; | |
83 | break; | |
84 | case 24: | |
85 | case 32: | |
86 | ((uint32_t *) info->pseudo_palette)[regno] = v; | |
87 | break; | |
88 | } | |
89 | } | |
90 | ||
91 | return 0; | |
92 | } | |
93 | ||
a6ba582d AC |
94 | static int psbfb_pan(struct fb_var_screeninfo *var, struct fb_info *info) |
95 | { | |
96 | struct psb_fbdev *fbdev = info->par; | |
97 | struct psb_framebuffer *psbfb = &fbdev->pfb; | |
98 | struct drm_device *dev = psbfb->base.dev; | |
99 | ||
100 | /* | |
101 | * We have to poke our nose in here. The core fb code assumes | |
102 | * panning is part of the hardware that can be invoked before | |
103 | * the actual fb is mapped. In our case that isn't quite true. | |
104 | */ | |
105 | if (psbfb->gtt->npage) { | |
106 | /* GTT roll shifts in 4K pages, we need to shift the right | |
107 | number of pages */ | |
108 | int pages = info->fix.line_length >> 12; | |
109 | psb_gtt_roll(dev, psbfb->gtt, var->yoffset * pages); | |
110 | } | |
111 | return 0; | |
112 | } | |
4d8d096e AC |
113 | |
114 | void psbfb_suspend(struct drm_device *dev) | |
115 | { | |
2d8357e6 | 116 | struct drm_framebuffer *fb; |
4d8d096e AC |
117 | |
118 | console_lock(); | |
119 | mutex_lock(&dev->mode_config.mutex); | |
120 | list_for_each_entry(fb, &dev->mode_config.fb_list, head) { | |
2d8357e6 | 121 | struct psb_framebuffer *psbfb = to_psb_fb(fb); |
4d8d096e AC |
122 | struct fb_info *info = psbfb->fbdev; |
123 | fb_set_suspend(info, 1); | |
124 | drm_fb_helper_blank(FB_BLANK_POWERDOWN, info); | |
125 | } | |
126 | mutex_unlock(&dev->mode_config.mutex); | |
127 | console_unlock(); | |
128 | } | |
129 | ||
130 | void psbfb_resume(struct drm_device *dev) | |
131 | { | |
2d8357e6 | 132 | struct drm_framebuffer *fb; |
4d8d096e AC |
133 | |
134 | console_lock(); | |
135 | mutex_lock(&dev->mode_config.mutex); | |
136 | list_for_each_entry(fb, &dev->mode_config.fb_list, head) { | |
2d8357e6 | 137 | struct psb_framebuffer *psbfb = to_psb_fb(fb); |
4d8d096e AC |
138 | struct fb_info *info = psbfb->fbdev; |
139 | fb_set_suspend(info, 0); | |
140 | drm_fb_helper_blank(FB_BLANK_UNBLANK, info); | |
141 | } | |
142 | mutex_unlock(&dev->mode_config.mutex); | |
143 | console_unlock(); | |
144 | drm_helper_disable_unused_functions(dev); | |
145 | } | |
146 | ||
147 | static int psbfb_vm_fault(struct vm_area_struct *vma, struct vm_fault *vmf) | |
148 | { | |
149 | struct psb_framebuffer *psbfb = vma->vm_private_data; | |
150 | struct drm_device *dev = psbfb->base.dev; | |
151 | struct drm_psb_private *dev_priv = dev->dev_private; | |
152 | int page_num; | |
153 | int i; | |
154 | unsigned long address; | |
155 | int ret; | |
156 | unsigned long pfn; | |
157 | /* FIXME: assumes fb at stolen base which may not be true */ | |
158 | unsigned long phys_addr = (unsigned long)dev_priv->stolen_base; | |
159 | ||
160 | page_num = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT; | |
161 | address = (unsigned long)vmf->virtual_address; | |
162 | ||
163 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); | |
164 | ||
165 | for (i = 0; i < page_num; i++) { | |
166 | pfn = (phys_addr >> PAGE_SHIFT); | |
167 | ||
168 | ret = vm_insert_mixed(vma, address, pfn); | |
169 | if (unlikely((ret == -EBUSY) || (ret != 0 && i > 0))) | |
170 | break; | |
171 | else if (unlikely(ret != 0)) { | |
172 | ret = (ret == -ENOMEM) ? VM_FAULT_OOM : VM_FAULT_SIGBUS; | |
173 | return ret; | |
174 | } | |
175 | address += PAGE_SIZE; | |
176 | phys_addr += PAGE_SIZE; | |
177 | } | |
178 | return VM_FAULT_NOPAGE; | |
179 | } | |
180 | ||
181 | static void psbfb_vm_open(struct vm_area_struct *vma) | |
182 | { | |
183 | } | |
184 | ||
185 | static void psbfb_vm_close(struct vm_area_struct *vma) | |
186 | { | |
187 | } | |
188 | ||
189 | static struct vm_operations_struct psbfb_vm_ops = { | |
190 | .fault = psbfb_vm_fault, | |
191 | .open = psbfb_vm_open, | |
192 | .close = psbfb_vm_close | |
193 | }; | |
194 | ||
195 | static int psbfb_mmap(struct fb_info *info, struct vm_area_struct *vma) | |
196 | { | |
197 | struct psb_fbdev *fbdev = info->par; | |
198 | struct psb_framebuffer *psbfb = &fbdev->pfb; | |
199 | ||
200 | if (vma->vm_pgoff != 0) | |
201 | return -EINVAL; | |
202 | if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT)) | |
203 | return -EINVAL; | |
204 | ||
205 | if (!psbfb->addr_space) | |
206 | psbfb->addr_space = vma->vm_file->f_mapping; | |
207 | /* | |
208 | * If this is a GEM object then info->screen_base is the virtual | |
209 | * kernel remapping of the object. FIXME: Review if this is | |
210 | * suitable for our mmap work | |
211 | */ | |
212 | vma->vm_ops = &psbfb_vm_ops; | |
213 | vma->vm_private_data = (void *)psbfb; | |
214 | vma->vm_flags |= VM_RESERVED | VM_IO | | |
215 | VM_MIXEDMAP | VM_DONTEXPAND; | |
216 | return 0; | |
217 | } | |
218 | ||
219 | static int psbfb_ioctl(struct fb_info *info, unsigned int cmd, | |
220 | unsigned long arg) | |
221 | { | |
222 | return -ENOTTY; | |
223 | } | |
224 | ||
225 | static struct fb_ops psbfb_ops = { | |
226 | .owner = THIS_MODULE, | |
227 | .fb_check_var = drm_fb_helper_check_var, | |
228 | .fb_set_par = drm_fb_helper_set_par, | |
229 | .fb_blank = drm_fb_helper_blank, | |
230 | .fb_setcolreg = psbfb_setcolreg, | |
231 | .fb_fillrect = cfb_fillrect, | |
232 | .fb_copyarea = psbfb_copyarea, | |
233 | .fb_imageblit = cfb_imageblit, | |
234 | .fb_mmap = psbfb_mmap, | |
235 | .fb_sync = psbfb_sync, | |
236 | .fb_ioctl = psbfb_ioctl, | |
237 | }; | |
238 | ||
a6ba582d AC |
239 | static struct fb_ops psbfb_roll_ops = { |
240 | .owner = THIS_MODULE, | |
241 | .fb_check_var = drm_fb_helper_check_var, | |
242 | .fb_set_par = drm_fb_helper_set_par, | |
243 | .fb_blank = drm_fb_helper_blank, | |
244 | .fb_setcolreg = psbfb_setcolreg, | |
245 | .fb_fillrect = cfb_fillrect, | |
246 | .fb_copyarea = cfb_copyarea, | |
247 | .fb_imageblit = cfb_imageblit, | |
248 | .fb_pan_display = psbfb_pan, | |
249 | .fb_mmap = psbfb_mmap, | |
250 | .fb_sync = psbfb_sync, | |
251 | .fb_ioctl = psbfb_ioctl, | |
252 | }; | |
253 | ||
4d8d096e AC |
254 | static struct fb_ops psbfb_unaccel_ops = { |
255 | .owner = THIS_MODULE, | |
256 | .fb_check_var = drm_fb_helper_check_var, | |
257 | .fb_set_par = drm_fb_helper_set_par, | |
258 | .fb_blank = drm_fb_helper_blank, | |
259 | .fb_setcolreg = psbfb_setcolreg, | |
260 | .fb_fillrect = cfb_fillrect, | |
261 | .fb_copyarea = cfb_copyarea, | |
262 | .fb_imageblit = cfb_imageblit, | |
263 | .fb_mmap = psbfb_mmap, | |
264 | .fb_ioctl = psbfb_ioctl, | |
265 | }; | |
266 | ||
267 | /** | |
268 | * psb_framebuffer_init - initialize a framebuffer | |
269 | * @dev: our DRM device | |
270 | * @fb: framebuffer to set up | |
271 | * @mode_cmd: mode description | |
272 | * @gt: backing object | |
273 | * | |
274 | * Configure and fill in the boilerplate for our frame buffer. Return | |
275 | * 0 on success or an error code if we fail. | |
276 | */ | |
277 | static int psb_framebuffer_init(struct drm_device *dev, | |
278 | struct psb_framebuffer *fb, | |
a9a644ac | 279 | struct drm_mode_fb_cmd2 *mode_cmd, |
4d8d096e AC |
280 | struct gtt_range *gt) |
281 | { | |
a9a644ac | 282 | u32 bpp, depth; |
4d8d096e AC |
283 | int ret; |
284 | ||
248dbc23 | 285 | drm_fb_get_bpp_depth(mode_cmd->pixel_format, &depth, &bpp); |
a9a644ac DA |
286 | |
287 | if (mode_cmd->pitches[0] & 63) | |
4d8d096e | 288 | return -EINVAL; |
a9a644ac | 289 | switch (bpp) { |
4d8d096e AC |
290 | case 8: |
291 | case 16: | |
292 | case 24: | |
293 | case 32: | |
294 | break; | |
295 | default: | |
296 | return -EINVAL; | |
297 | } | |
298 | ret = drm_framebuffer_init(dev, &fb->base, &psb_fb_funcs); | |
299 | if (ret) { | |
300 | dev_err(dev->dev, "framebuffer init failed: %d\n", ret); | |
301 | return ret; | |
302 | } | |
303 | drm_helper_mode_fill_fb_struct(&fb->base, mode_cmd); | |
304 | fb->gtt = gt; | |
305 | return 0; | |
306 | } | |
307 | ||
308 | /** | |
309 | * psb_framebuffer_create - create a framebuffer backed by gt | |
310 | * @dev: our DRM device | |
311 | * @mode_cmd: the description of the requested mode | |
312 | * @gt: the backing object | |
313 | * | |
314 | * Create a framebuffer object backed by the gt, and fill in the | |
315 | * boilerplate required | |
316 | * | |
317 | * TODO: review object references | |
318 | */ | |
319 | ||
320 | static struct drm_framebuffer *psb_framebuffer_create | |
321 | (struct drm_device *dev, | |
a9a644ac | 322 | struct drm_mode_fb_cmd2 *mode_cmd, |
4d8d096e AC |
323 | struct gtt_range *gt) |
324 | { | |
325 | struct psb_framebuffer *fb; | |
326 | int ret; | |
327 | ||
328 | fb = kzalloc(sizeof(*fb), GFP_KERNEL); | |
329 | if (!fb) | |
330 | return ERR_PTR(-ENOMEM); | |
331 | ||
332 | ret = psb_framebuffer_init(dev, fb, mode_cmd, gt); | |
333 | if (ret) { | |
334 | kfree(fb); | |
335 | return ERR_PTR(ret); | |
336 | } | |
337 | return &fb->base; | |
338 | } | |
339 | ||
340 | /** | |
341 | * psbfb_alloc - allocate frame buffer memory | |
342 | * @dev: the DRM device | |
343 | * @aligned_size: space needed | |
a6ba582d | 344 | * @force: fall back to GEM buffers if need be |
4d8d096e AC |
345 | * |
346 | * Allocate the frame buffer. In the usual case we get a GTT range that | |
347 | * is stolen memory backed and life is simple. If there isn't sufficient | |
dffc9ceb AC |
348 | * we fail as we don't have the virtual mapping space to really vmap it |
349 | * and the kernel console code can't handle non linear framebuffers. | |
4d8d096e | 350 | * |
dffc9ceb | 351 | * Re-address this as and if the framebuffer layer grows this ability. |
4d8d096e AC |
352 | */ |
353 | static struct gtt_range *psbfb_alloc(struct drm_device *dev, int aligned_size) | |
354 | { | |
355 | struct gtt_range *backing; | |
356 | /* Begin by trying to use stolen memory backing */ | |
357 | backing = psb_gtt_alloc_range(dev, aligned_size, "fb", 1); | |
358 | if (backing) { | |
359 | if (drm_gem_private_object_init(dev, | |
360 | &backing->gem, aligned_size) == 0) | |
361 | return backing; | |
362 | psb_gtt_free_range(dev, backing); | |
363 | } | |
dffc9ceb | 364 | return NULL; |
4d8d096e AC |
365 | } |
366 | ||
367 | /** | |
368 | * psbfb_create - create a framebuffer | |
369 | * @fbdev: the framebuffer device | |
370 | * @sizes: specification of the layout | |
371 | * | |
372 | * Create a framebuffer to the specifications provided | |
373 | */ | |
374 | static int psbfb_create(struct psb_fbdev *fbdev, | |
375 | struct drm_fb_helper_surface_size *sizes) | |
376 | { | |
377 | struct drm_device *dev = fbdev->psb_fb_helper.dev; | |
378 | struct drm_psb_private *dev_priv = dev->dev_private; | |
379 | struct fb_info *info; | |
380 | struct drm_framebuffer *fb; | |
381 | struct psb_framebuffer *psbfb = &fbdev->pfb; | |
a9a644ac | 382 | struct drm_mode_fb_cmd2 mode_cmd; |
4d8d096e AC |
383 | struct device *device = &dev->pdev->dev; |
384 | int size; | |
385 | int ret; | |
386 | struct gtt_range *backing; | |
a9a644ac | 387 | u32 bpp, depth; |
1b223c9e AC |
388 | int gtt_roll = 0; |
389 | int pitch_lines = 0; | |
4d8d096e AC |
390 | |
391 | mode_cmd.width = sizes->surface_width; | |
392 | mode_cmd.height = sizes->surface_height; | |
a9a644ac | 393 | bpp = sizes->surface_bpp; |
4d8d096e AC |
394 | |
395 | /* No 24bit packed */ | |
a9a644ac DA |
396 | if (bpp == 24) |
397 | bpp = 32; | |
4d8d096e | 398 | |
1b223c9e AC |
399 | do { |
400 | /* | |
401 | * Acceleration via the GTT requires pitch to be | |
402 | * power of two aligned. Preferably page but less | |
403 | * is ok with some fonts | |
404 | */ | |
405 | mode_cmd.pitches[0] = ALIGN(mode_cmd.width * ((bpp + 7) / 8), 4096 >> pitch_lines); | |
406 | depth = sizes->surface_depth; | |
407 | ||
408 | size = mode_cmd.pitches[0] * mode_cmd.height; | |
409 | size = ALIGN(size, PAGE_SIZE); | |
410 | ||
411 | /* Allocate the fb in the GTT with stolen page backing */ | |
412 | backing = psbfb_alloc(dev, size); | |
413 | ||
414 | if (pitch_lines) | |
415 | pitch_lines *= 2; | |
416 | else | |
417 | pitch_lines = 1; | |
418 | gtt_roll++; | |
419 | } while (backing == NULL && pitch_lines <= 16); | |
4d8d096e | 420 | |
1b223c9e AC |
421 | /* The final pitch we accepted if we succeeded */ |
422 | pitch_lines /= 2; | |
4d8d096e | 423 | |
a6ba582d AC |
424 | if (backing == NULL) { |
425 | /* | |
426 | * We couldn't get the space we wanted, fall back to the | |
427 | * display engine requirement instead. The HW requires | |
428 | * the pitch to be 64 byte aligned | |
a6ba582d AC |
429 | */ |
430 | ||
431 | gtt_roll = 0; /* Don't use GTT accelerated scrolling */ | |
1b223c9e | 432 | pitch_lines = 64; |
a6ba582d AC |
433 | |
434 | mode_cmd.pitches[0] = ALIGN(mode_cmd.width * ((bpp + 7) / 8), 64); | |
435 | ||
436 | size = mode_cmd.pitches[0] * mode_cmd.height; | |
437 | size = ALIGN(size, PAGE_SIZE); | |
438 | ||
439 | /* Allocate the framebuffer in the GTT with stolen page backing */ | |
440 | backing = psbfb_alloc(dev, size); | |
441 | if (backing == NULL) | |
442 | return -ENOMEM; | |
443 | } | |
4d8d096e AC |
444 | |
445 | mutex_lock(&dev->struct_mutex); | |
446 | ||
447 | info = framebuffer_alloc(0, device); | |
448 | if (!info) { | |
449 | ret = -ENOMEM; | |
450 | goto out_err1; | |
451 | } | |
452 | info->par = fbdev; | |
453 | ||
a9a644ac DA |
454 | mode_cmd.pixel_format = drm_mode_legacy_fb_format(bpp, depth); |
455 | ||
4d8d096e AC |
456 | ret = psb_framebuffer_init(dev, psbfb, &mode_cmd, backing); |
457 | if (ret) | |
458 | goto out_unref; | |
459 | ||
460 | fb = &psbfb->base; | |
461 | psbfb->fbdev = info; | |
462 | ||
463 | fbdev->psb_fb_helper.fb = fb; | |
464 | fbdev->psb_fb_helper.fbdev = info; | |
465 | ||
466 | strcpy(info->fix.id, "psbfb"); | |
467 | ||
468 | info->flags = FBINFO_DEFAULT; | |
1b223c9e AC |
469 | if (dev_priv->ops->accel_2d && pitch_lines > 8) /* 2D engine */ |
470 | info->fbops = &psbfb_ops; | |
471 | else if (gtt_roll) { /* GTT rolling seems best */ | |
a6ba582d AC |
472 | info->fbops = &psbfb_roll_ops; |
473 | info->flags |= FBINFO_HWACCEL_YPAN; | |
1b223c9e | 474 | } else /* Software */ |
a6ba582d | 475 | info->fbops = &psbfb_unaccel_ops; |
4d8d096e AC |
476 | |
477 | ret = fb_alloc_cmap(&info->cmap, 256, 0); | |
478 | if (ret) { | |
479 | ret = -ENOMEM; | |
480 | goto out_unref; | |
481 | } | |
482 | ||
483 | info->fix.smem_start = dev->mode_config.fb_base; | |
484 | info->fix.smem_len = size; | |
a6ba582d AC |
485 | info->fix.ywrapstep = gtt_roll; |
486 | info->fix.ypanstep = 0; | |
4d8d096e | 487 | |
dffc9ceb AC |
488 | /* Accessed stolen memory directly */ |
489 | info->screen_base = (char *)dev_priv->vram_addr + | |
4d8d096e | 490 | backing->offset; |
4d8d096e AC |
491 | info->screen_size = size; |
492 | ||
493 | if (dev_priv->gtt.stolen_size) { | |
494 | info->apertures = alloc_apertures(1); | |
495 | if (!info->apertures) { | |
496 | ret = -ENOMEM; | |
497 | goto out_unref; | |
498 | } | |
499 | info->apertures->ranges[0].base = dev->mode_config.fb_base; | |
500 | info->apertures->ranges[0].size = dev_priv->gtt.stolen_size; | |
501 | } | |
502 | ||
01f2c773 | 503 | drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth); |
4d8d096e AC |
504 | drm_fb_helper_fill_var(info, &fbdev->psb_fb_helper, |
505 | sizes->fb_width, sizes->fb_height); | |
506 | ||
507 | info->fix.mmio_start = pci_resource_start(dev->pdev, 0); | |
508 | info->fix.mmio_len = pci_resource_len(dev->pdev, 0); | |
509 | ||
510 | info->pixmap.size = 64 * 1024; | |
511 | info->pixmap.buf_align = 8; | |
512 | info->pixmap.access_align = 32; | |
513 | info->pixmap.flags = FB_PIXMAP_SYSTEM; | |
514 | info->pixmap.scan_align = 1; | |
515 | ||
516 | dev_info(dev->dev, "allocated %dx%d fb\n", | |
517 | psbfb->base.width, psbfb->base.height); | |
518 | ||
519 | mutex_unlock(&dev->struct_mutex); | |
520 | return 0; | |
521 | out_unref: | |
522 | if (backing->stolen) | |
523 | psb_gtt_free_range(dev, backing); | |
dffc9ceb | 524 | else |
4d8d096e | 525 | drm_gem_object_unreference(&backing->gem); |
4d8d096e AC |
526 | out_err1: |
527 | mutex_unlock(&dev->struct_mutex); | |
528 | psb_gtt_free_range(dev, backing); | |
529 | return ret; | |
530 | } | |
531 | ||
532 | /** | |
533 | * psb_user_framebuffer_create - create framebuffer | |
534 | * @dev: our DRM device | |
535 | * @filp: client file | |
536 | * @cmd: mode request | |
537 | * | |
538 | * Create a new framebuffer backed by a userspace GEM object | |
539 | */ | |
540 | static struct drm_framebuffer *psb_user_framebuffer_create | |
541 | (struct drm_device *dev, struct drm_file *filp, | |
a9a644ac | 542 | struct drm_mode_fb_cmd2 *cmd) |
4d8d096e AC |
543 | { |
544 | struct gtt_range *r; | |
545 | struct drm_gem_object *obj; | |
546 | ||
547 | /* | |
548 | * Find the GEM object and thus the gtt range object that is | |
549 | * to back this space | |
550 | */ | |
a9a644ac | 551 | obj = drm_gem_object_lookup(dev, filp, cmd->handles[0]); |
4d8d096e AC |
552 | if (obj == NULL) |
553 | return ERR_PTR(-ENOENT); | |
554 | ||
555 | /* Let the core code do all the work */ | |
556 | r = container_of(obj, struct gtt_range, gem); | |
557 | return psb_framebuffer_create(dev, cmd, r); | |
558 | } | |
559 | ||
560 | static void psbfb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green, | |
561 | u16 blue, int regno) | |
562 | { | |
563 | } | |
564 | ||
565 | static void psbfb_gamma_get(struct drm_crtc *crtc, u16 *red, | |
566 | u16 *green, u16 *blue, int regno) | |
567 | { | |
568 | } | |
569 | ||
570 | static int psbfb_probe(struct drm_fb_helper *helper, | |
571 | struct drm_fb_helper_surface_size *sizes) | |
572 | { | |
573 | struct psb_fbdev *psb_fbdev = (struct psb_fbdev *)helper; | |
574 | int new_fb = 0; | |
575 | int ret; | |
576 | ||
577 | if (!helper->fb) { | |
578 | ret = psbfb_create(psb_fbdev, sizes); | |
579 | if (ret) | |
580 | return ret; | |
581 | new_fb = 1; | |
582 | } | |
583 | return new_fb; | |
584 | } | |
585 | ||
586 | struct drm_fb_helper_funcs psb_fb_helper_funcs = { | |
587 | .gamma_set = psbfb_gamma_set, | |
588 | .gamma_get = psbfb_gamma_get, | |
589 | .fb_probe = psbfb_probe, | |
590 | }; | |
591 | ||
592 | int psb_fbdev_destroy(struct drm_device *dev, struct psb_fbdev *fbdev) | |
593 | { | |
594 | struct fb_info *info; | |
595 | struct psb_framebuffer *psbfb = &fbdev->pfb; | |
596 | ||
597 | if (fbdev->psb_fb_helper.fbdev) { | |
598 | info = fbdev->psb_fb_helper.fbdev; | |
4d8d096e AC |
599 | unregister_framebuffer(info); |
600 | if (info->cmap.len) | |
601 | fb_dealloc_cmap(&info->cmap); | |
602 | framebuffer_release(info); | |
603 | } | |
604 | drm_fb_helper_fini(&fbdev->psb_fb_helper); | |
605 | drm_framebuffer_cleanup(&psbfb->base); | |
606 | ||
607 | if (psbfb->gtt) | |
608 | drm_gem_object_unreference(&psbfb->gtt->gem); | |
609 | return 0; | |
610 | } | |
611 | ||
612 | int psb_fbdev_init(struct drm_device *dev) | |
613 | { | |
614 | struct psb_fbdev *fbdev; | |
615 | struct drm_psb_private *dev_priv = dev->dev_private; | |
616 | ||
617 | fbdev = kzalloc(sizeof(struct psb_fbdev), GFP_KERNEL); | |
618 | if (!fbdev) { | |
619 | dev_err(dev->dev, "no memory\n"); | |
620 | return -ENOMEM; | |
621 | } | |
622 | ||
623 | dev_priv->fbdev = fbdev; | |
624 | fbdev->psb_fb_helper.funcs = &psb_fb_helper_funcs; | |
625 | ||
626 | drm_fb_helper_init(dev, &fbdev->psb_fb_helper, dev_priv->ops->crtcs, | |
627 | INTELFB_CONN_LIMIT); | |
628 | ||
629 | drm_fb_helper_single_add_all_connectors(&fbdev->psb_fb_helper); | |
630 | drm_fb_helper_initial_config(&fbdev->psb_fb_helper, 32); | |
631 | return 0; | |
632 | } | |
633 | ||
634 | void psb_fbdev_fini(struct drm_device *dev) | |
635 | { | |
636 | struct drm_psb_private *dev_priv = dev->dev_private; | |
637 | ||
638 | if (!dev_priv->fbdev) | |
639 | return; | |
640 | ||
641 | psb_fbdev_destroy(dev, dev_priv->fbdev); | |
642 | kfree(dev_priv->fbdev); | |
643 | dev_priv->fbdev = NULL; | |
644 | } | |
645 | ||
646 | static void psbfb_output_poll_changed(struct drm_device *dev) | |
647 | { | |
648 | struct drm_psb_private *dev_priv = dev->dev_private; | |
649 | struct psb_fbdev *fbdev = (struct psb_fbdev *)dev_priv->fbdev; | |
650 | drm_fb_helper_hotplug_event(&fbdev->psb_fb_helper); | |
651 | } | |
652 | ||
653 | /** | |
654 | * psb_user_framebuffer_create_handle - add hamdle to a framebuffer | |
655 | * @fb: framebuffer | |
656 | * @file_priv: our DRM file | |
657 | * @handle: returned handle | |
658 | * | |
659 | * Our framebuffer object is a GTT range which also contains a GEM | |
660 | * object. We need to turn it into a handle for userspace. GEM will do | |
661 | * the work for us | |
662 | */ | |
663 | static int psb_user_framebuffer_create_handle(struct drm_framebuffer *fb, | |
664 | struct drm_file *file_priv, | |
665 | unsigned int *handle) | |
666 | { | |
667 | struct psb_framebuffer *psbfb = to_psb_fb(fb); | |
668 | struct gtt_range *r = psbfb->gtt; | |
669 | return drm_gem_handle_create(file_priv, &r->gem, handle); | |
670 | } | |
671 | ||
672 | /** | |
673 | * psb_user_framebuffer_destroy - destruct user created fb | |
674 | * @fb: framebuffer | |
675 | * | |
676 | * User framebuffers are backed by GEM objects so all we have to do is | |
677 | * clean up a bit and drop the reference, GEM will handle the fallout | |
678 | */ | |
679 | static void psb_user_framebuffer_destroy(struct drm_framebuffer *fb) | |
680 | { | |
681 | struct psb_framebuffer *psbfb = to_psb_fb(fb); | |
682 | struct gtt_range *r = psbfb->gtt; | |
683 | struct drm_device *dev = fb->dev; | |
684 | struct drm_psb_private *dev_priv = dev->dev_private; | |
685 | struct psb_fbdev *fbdev = dev_priv->fbdev; | |
686 | struct drm_crtc *crtc; | |
687 | int reset = 0; | |
688 | ||
689 | /* Should never get stolen memory for a user fb */ | |
690 | WARN_ON(r->stolen); | |
691 | ||
692 | /* Check if we are erroneously live */ | |
693 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) | |
694 | if (crtc->fb == fb) | |
695 | reset = 1; | |
696 | ||
697 | if (reset) | |
698 | /* | |
699 | * Now force a sane response before we permit the DRM CRTC | |
700 | * layer to do stupid things like blank the display. Instead | |
701 | * we reset this framebuffer as if the user had forced a reset. | |
702 | * We must do this before the cleanup so that the DRM layer | |
703 | * doesn't get a chance to stick its oar in where it isn't | |
704 | * wanted. | |
705 | */ | |
706 | drm_fb_helper_restore_fbdev_mode(&fbdev->psb_fb_helper); | |
707 | ||
708 | /* Let DRM do its clean up */ | |
709 | drm_framebuffer_cleanup(fb); | |
710 | /* We are no longer using the resource in GEM */ | |
711 | drm_gem_object_unreference_unlocked(&r->gem); | |
712 | kfree(fb); | |
713 | } | |
714 | ||
715 | static const struct drm_mode_config_funcs psb_mode_funcs = { | |
716 | .fb_create = psb_user_framebuffer_create, | |
717 | .output_poll_changed = psbfb_output_poll_changed, | |
718 | }; | |
719 | ||
720 | static int psb_create_backlight_property(struct drm_device *dev) | |
721 | { | |
722 | struct drm_psb_private *dev_priv = dev->dev_private; | |
723 | struct drm_property *backlight; | |
724 | ||
725 | if (dev_priv->backlight_property) | |
726 | return 0; | |
727 | ||
728 | backlight = drm_property_create(dev, DRM_MODE_PROP_RANGE, | |
729 | "backlight", 2); | |
730 | backlight->values[0] = 0; | |
731 | backlight->values[1] = 100; | |
732 | ||
733 | dev_priv->backlight_property = backlight; | |
734 | ||
735 | return 0; | |
736 | } | |
737 | ||
738 | static void psb_setup_outputs(struct drm_device *dev) | |
739 | { | |
740 | struct drm_psb_private *dev_priv = dev->dev_private; | |
741 | struct drm_connector *connector; | |
742 | ||
743 | drm_mode_create_scaling_mode_property(dev); | |
744 | psb_create_backlight_property(dev); | |
745 | ||
746 | dev_priv->ops->output_init(dev); | |
747 | ||
748 | list_for_each_entry(connector, &dev->mode_config.connector_list, | |
749 | head) { | |
1730f89b PJ |
750 | struct psb_intel_encoder *psb_intel_encoder = |
751 | psb_intel_attached_encoder(connector); | |
752 | struct drm_encoder *encoder = &psb_intel_encoder->base; | |
4d8d096e AC |
753 | int crtc_mask = 0, clone_mask = 0; |
754 | ||
755 | /* valid crtcs */ | |
1730f89b | 756 | switch (psb_intel_encoder->type) { |
4d8d096e AC |
757 | case INTEL_OUTPUT_ANALOG: |
758 | crtc_mask = (1 << 0); | |
759 | clone_mask = (1 << INTEL_OUTPUT_ANALOG); | |
760 | break; | |
761 | case INTEL_OUTPUT_SDVO: | |
762 | crtc_mask = ((1 << 0) | (1 << 1)); | |
763 | clone_mask = (1 << INTEL_OUTPUT_SDVO); | |
764 | break; | |
765 | case INTEL_OUTPUT_LVDS: | |
766 | if (IS_MRST(dev)) | |
767 | crtc_mask = (1 << 0); | |
768 | else | |
769 | crtc_mask = (1 << 1); | |
770 | clone_mask = (1 << INTEL_OUTPUT_LVDS); | |
771 | break; | |
772 | case INTEL_OUTPUT_MIPI: | |
773 | crtc_mask = (1 << 0); | |
774 | clone_mask = (1 << INTEL_OUTPUT_MIPI); | |
775 | break; | |
776 | case INTEL_OUTPUT_MIPI2: | |
777 | crtc_mask = (1 << 2); | |
778 | clone_mask = (1 << INTEL_OUTPUT_MIPI2); | |
779 | break; | |
780 | case INTEL_OUTPUT_HDMI: | |
781 | if (IS_MFLD(dev)) | |
782 | crtc_mask = (1 << 1); | |
783 | else | |
784 | crtc_mask = (1 << 0); | |
785 | clone_mask = (1 << INTEL_OUTPUT_HDMI); | |
786 | break; | |
787 | } | |
788 | encoder->possible_crtcs = crtc_mask; | |
789 | encoder->possible_clones = | |
790 | psb_intel_connector_clones(dev, clone_mask); | |
791 | } | |
792 | } | |
793 | ||
794 | void psb_modeset_init(struct drm_device *dev) | |
795 | { | |
796 | struct drm_psb_private *dev_priv = dev->dev_private; | |
797 | struct psb_intel_mode_device *mode_dev = &dev_priv->mode_dev; | |
798 | int i; | |
799 | ||
800 | drm_mode_config_init(dev); | |
801 | ||
802 | dev->mode_config.min_width = 0; | |
803 | dev->mode_config.min_height = 0; | |
804 | ||
805 | dev->mode_config.funcs = (void *) &psb_mode_funcs; | |
806 | ||
807 | /* set memory base */ | |
dffc9ceb | 808 | /* Oaktrail and Poulsbo should use BAR 2*/ |
4d8d096e AC |
809 | pci_read_config_dword(dev->pdev, PSB_BSM, (u32 *) |
810 | &(dev->mode_config.fb_base)); | |
811 | ||
812 | /* num pipes is 2 for PSB but 1 for Mrst */ | |
813 | for (i = 0; i < dev_priv->num_pipe; i++) | |
814 | psb_intel_crtc_init(dev, i, mode_dev); | |
815 | ||
816 | dev->mode_config.max_width = 2048; | |
817 | dev->mode_config.max_height = 2048; | |
818 | ||
819 | psb_setup_outputs(dev); | |
820 | } | |
821 | ||
822 | void psb_modeset_cleanup(struct drm_device *dev) | |
823 | { | |
824 | mutex_lock(&dev->struct_mutex); | |
825 | ||
826 | drm_kms_helper_poll_fini(dev); | |
827 | psb_fbdev_fini(dev); | |
828 | drm_mode_config_cleanup(dev); | |
829 | ||
830 | mutex_unlock(&dev->struct_mutex); | |
831 | } |