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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 | 113 | |
4d8d096e AC |
114 | static int psbfb_vm_fault(struct vm_area_struct *vma, struct vm_fault *vmf) |
115 | { | |
116 | struct psb_framebuffer *psbfb = vma->vm_private_data; | |
117 | struct drm_device *dev = psbfb->base.dev; | |
118 | struct drm_psb_private *dev_priv = dev->dev_private; | |
119 | int page_num; | |
120 | int i; | |
121 | unsigned long address; | |
122 | int ret; | |
123 | unsigned long pfn; | |
124 | /* FIXME: assumes fb at stolen base which may not be true */ | |
125 | unsigned long phys_addr = (unsigned long)dev_priv->stolen_base; | |
126 | ||
127 | page_num = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT; | |
1278f7de | 128 | address = (unsigned long)vmf->virtual_address - (vmf->pgoff << PAGE_SHIFT); |
4d8d096e AC |
129 | |
130 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); | |
131 | ||
132 | for (i = 0; i < page_num; i++) { | |
133 | pfn = (phys_addr >> PAGE_SHIFT); | |
134 | ||
135 | ret = vm_insert_mixed(vma, address, pfn); | |
136 | if (unlikely((ret == -EBUSY) || (ret != 0 && i > 0))) | |
137 | break; | |
138 | else if (unlikely(ret != 0)) { | |
139 | ret = (ret == -ENOMEM) ? VM_FAULT_OOM : VM_FAULT_SIGBUS; | |
140 | return ret; | |
141 | } | |
142 | address += PAGE_SIZE; | |
143 | phys_addr += PAGE_SIZE; | |
144 | } | |
145 | return VM_FAULT_NOPAGE; | |
146 | } | |
147 | ||
148 | static void psbfb_vm_open(struct vm_area_struct *vma) | |
149 | { | |
150 | } | |
151 | ||
152 | static void psbfb_vm_close(struct vm_area_struct *vma) | |
153 | { | |
154 | } | |
155 | ||
78b68556 | 156 | static const struct vm_operations_struct psbfb_vm_ops = { |
4d8d096e AC |
157 | .fault = psbfb_vm_fault, |
158 | .open = psbfb_vm_open, | |
159 | .close = psbfb_vm_close | |
160 | }; | |
161 | ||
162 | static int psbfb_mmap(struct fb_info *info, struct vm_area_struct *vma) | |
163 | { | |
164 | struct psb_fbdev *fbdev = info->par; | |
165 | struct psb_framebuffer *psbfb = &fbdev->pfb; | |
166 | ||
167 | if (vma->vm_pgoff != 0) | |
168 | return -EINVAL; | |
169 | if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT)) | |
170 | return -EINVAL; | |
171 | ||
172 | if (!psbfb->addr_space) | |
173 | psbfb->addr_space = vma->vm_file->f_mapping; | |
174 | /* | |
175 | * If this is a GEM object then info->screen_base is the virtual | |
176 | * kernel remapping of the object. FIXME: Review if this is | |
177 | * suitable for our mmap work | |
178 | */ | |
179 | vma->vm_ops = &psbfb_vm_ops; | |
180 | vma->vm_private_data = (void *)psbfb; | |
314e51b9 | 181 | vma->vm_flags |= VM_IO | VM_MIXEDMAP | VM_DONTEXPAND | VM_DONTDUMP; |
4d8d096e AC |
182 | return 0; |
183 | } | |
184 | ||
185 | static int psbfb_ioctl(struct fb_info *info, unsigned int cmd, | |
186 | unsigned long arg) | |
187 | { | |
188 | return -ENOTTY; | |
189 | } | |
190 | ||
191 | static struct fb_ops psbfb_ops = { | |
192 | .owner = THIS_MODULE, | |
193 | .fb_check_var = drm_fb_helper_check_var, | |
194 | .fb_set_par = drm_fb_helper_set_par, | |
195 | .fb_blank = drm_fb_helper_blank, | |
196 | .fb_setcolreg = psbfb_setcolreg, | |
197 | .fb_fillrect = cfb_fillrect, | |
198 | .fb_copyarea = psbfb_copyarea, | |
199 | .fb_imageblit = cfb_imageblit, | |
200 | .fb_mmap = psbfb_mmap, | |
201 | .fb_sync = psbfb_sync, | |
202 | .fb_ioctl = psbfb_ioctl, | |
203 | }; | |
204 | ||
a6ba582d AC |
205 | static struct fb_ops psbfb_roll_ops = { |
206 | .owner = THIS_MODULE, | |
207 | .fb_check_var = drm_fb_helper_check_var, | |
208 | .fb_set_par = drm_fb_helper_set_par, | |
209 | .fb_blank = drm_fb_helper_blank, | |
210 | .fb_setcolreg = psbfb_setcolreg, | |
211 | .fb_fillrect = cfb_fillrect, | |
212 | .fb_copyarea = cfb_copyarea, | |
213 | .fb_imageblit = cfb_imageblit, | |
214 | .fb_pan_display = psbfb_pan, | |
215 | .fb_mmap = psbfb_mmap, | |
a6ba582d AC |
216 | .fb_ioctl = psbfb_ioctl, |
217 | }; | |
218 | ||
4d8d096e AC |
219 | static struct fb_ops psbfb_unaccel_ops = { |
220 | .owner = THIS_MODULE, | |
221 | .fb_check_var = drm_fb_helper_check_var, | |
222 | .fb_set_par = drm_fb_helper_set_par, | |
223 | .fb_blank = drm_fb_helper_blank, | |
224 | .fb_setcolreg = psbfb_setcolreg, | |
225 | .fb_fillrect = cfb_fillrect, | |
226 | .fb_copyarea = cfb_copyarea, | |
227 | .fb_imageblit = cfb_imageblit, | |
228 | .fb_mmap = psbfb_mmap, | |
229 | .fb_ioctl = psbfb_ioctl, | |
230 | }; | |
231 | ||
232 | /** | |
233 | * psb_framebuffer_init - initialize a framebuffer | |
234 | * @dev: our DRM device | |
235 | * @fb: framebuffer to set up | |
236 | * @mode_cmd: mode description | |
237 | * @gt: backing object | |
238 | * | |
239 | * Configure and fill in the boilerplate for our frame buffer. Return | |
240 | * 0 on success or an error code if we fail. | |
241 | */ | |
242 | static int psb_framebuffer_init(struct drm_device *dev, | |
243 | struct psb_framebuffer *fb, | |
a9a644ac | 244 | struct drm_mode_fb_cmd2 *mode_cmd, |
4d8d096e AC |
245 | struct gtt_range *gt) |
246 | { | |
a9a644ac | 247 | u32 bpp, depth; |
4d8d096e AC |
248 | int ret; |
249 | ||
248dbc23 | 250 | drm_fb_get_bpp_depth(mode_cmd->pixel_format, &depth, &bpp); |
a9a644ac DA |
251 | |
252 | if (mode_cmd->pitches[0] & 63) | |
4d8d096e | 253 | return -EINVAL; |
a9a644ac | 254 | switch (bpp) { |
4d8d096e AC |
255 | case 8: |
256 | case 16: | |
257 | case 24: | |
258 | case 32: | |
259 | break; | |
260 | default: | |
261 | return -EINVAL; | |
262 | } | |
263 | ret = drm_framebuffer_init(dev, &fb->base, &psb_fb_funcs); | |
264 | if (ret) { | |
265 | dev_err(dev->dev, "framebuffer init failed: %d\n", ret); | |
266 | return ret; | |
267 | } | |
268 | drm_helper_mode_fill_fb_struct(&fb->base, mode_cmd); | |
269 | fb->gtt = gt; | |
270 | return 0; | |
271 | } | |
272 | ||
273 | /** | |
274 | * psb_framebuffer_create - create a framebuffer backed by gt | |
275 | * @dev: our DRM device | |
276 | * @mode_cmd: the description of the requested mode | |
277 | * @gt: the backing object | |
278 | * | |
279 | * Create a framebuffer object backed by the gt, and fill in the | |
280 | * boilerplate required | |
281 | * | |
282 | * TODO: review object references | |
283 | */ | |
284 | ||
285 | static struct drm_framebuffer *psb_framebuffer_create | |
286 | (struct drm_device *dev, | |
a9a644ac | 287 | struct drm_mode_fb_cmd2 *mode_cmd, |
4d8d096e AC |
288 | struct gtt_range *gt) |
289 | { | |
290 | struct psb_framebuffer *fb; | |
291 | int ret; | |
292 | ||
293 | fb = kzalloc(sizeof(*fb), GFP_KERNEL); | |
294 | if (!fb) | |
295 | return ERR_PTR(-ENOMEM); | |
296 | ||
297 | ret = psb_framebuffer_init(dev, fb, mode_cmd, gt); | |
298 | if (ret) { | |
299 | kfree(fb); | |
300 | return ERR_PTR(ret); | |
301 | } | |
302 | return &fb->base; | |
303 | } | |
304 | ||
305 | /** | |
306 | * psbfb_alloc - allocate frame buffer memory | |
307 | * @dev: the DRM device | |
308 | * @aligned_size: space needed | |
a6ba582d | 309 | * @force: fall back to GEM buffers if need be |
4d8d096e AC |
310 | * |
311 | * Allocate the frame buffer. In the usual case we get a GTT range that | |
312 | * is stolen memory backed and life is simple. If there isn't sufficient | |
dffc9ceb AC |
313 | * we fail as we don't have the virtual mapping space to really vmap it |
314 | * and the kernel console code can't handle non linear framebuffers. | |
4d8d096e | 315 | * |
dffc9ceb | 316 | * Re-address this as and if the framebuffer layer grows this ability. |
4d8d096e AC |
317 | */ |
318 | static struct gtt_range *psbfb_alloc(struct drm_device *dev, int aligned_size) | |
319 | { | |
320 | struct gtt_range *backing; | |
321 | /* Begin by trying to use stolen memory backing */ | |
322 | backing = psb_gtt_alloc_range(dev, aligned_size, "fb", 1); | |
323 | if (backing) { | |
324 | if (drm_gem_private_object_init(dev, | |
325 | &backing->gem, aligned_size) == 0) | |
326 | return backing; | |
327 | psb_gtt_free_range(dev, backing); | |
328 | } | |
dffc9ceb | 329 | return NULL; |
4d8d096e AC |
330 | } |
331 | ||
332 | /** | |
333 | * psbfb_create - create a framebuffer | |
334 | * @fbdev: the framebuffer device | |
335 | * @sizes: specification of the layout | |
336 | * | |
337 | * Create a framebuffer to the specifications provided | |
338 | */ | |
339 | static int psbfb_create(struct psb_fbdev *fbdev, | |
340 | struct drm_fb_helper_surface_size *sizes) | |
341 | { | |
342 | struct drm_device *dev = fbdev->psb_fb_helper.dev; | |
343 | struct drm_psb_private *dev_priv = dev->dev_private; | |
344 | struct fb_info *info; | |
345 | struct drm_framebuffer *fb; | |
346 | struct psb_framebuffer *psbfb = &fbdev->pfb; | |
a9a644ac | 347 | struct drm_mode_fb_cmd2 mode_cmd; |
4d8d096e AC |
348 | struct device *device = &dev->pdev->dev; |
349 | int size; | |
350 | int ret; | |
351 | struct gtt_range *backing; | |
a9a644ac | 352 | u32 bpp, depth; |
1b223c9e AC |
353 | int gtt_roll = 0; |
354 | int pitch_lines = 0; | |
4d8d096e AC |
355 | |
356 | mode_cmd.width = sizes->surface_width; | |
357 | mode_cmd.height = sizes->surface_height; | |
a9a644ac | 358 | bpp = sizes->surface_bpp; |
6aa1ead1 | 359 | depth = sizes->surface_depth; |
4d8d096e AC |
360 | |
361 | /* No 24bit packed */ | |
a9a644ac DA |
362 | if (bpp == 24) |
363 | bpp = 32; | |
4d8d096e | 364 | |
1b223c9e AC |
365 | do { |
366 | /* | |
367 | * Acceleration via the GTT requires pitch to be | |
368 | * power of two aligned. Preferably page but less | |
369 | * is ok with some fonts | |
370 | */ | |
371 | mode_cmd.pitches[0] = ALIGN(mode_cmd.width * ((bpp + 7) / 8), 4096 >> pitch_lines); | |
1b223c9e AC |
372 | |
373 | size = mode_cmd.pitches[0] * mode_cmd.height; | |
374 | size = ALIGN(size, PAGE_SIZE); | |
375 | ||
376 | /* Allocate the fb in the GTT with stolen page backing */ | |
377 | backing = psbfb_alloc(dev, size); | |
378 | ||
379 | if (pitch_lines) | |
380 | pitch_lines *= 2; | |
381 | else | |
382 | pitch_lines = 1; | |
383 | gtt_roll++; | |
384 | } while (backing == NULL && pitch_lines <= 16); | |
4d8d096e | 385 | |
1b223c9e AC |
386 | /* The final pitch we accepted if we succeeded */ |
387 | pitch_lines /= 2; | |
4d8d096e | 388 | |
a6ba582d AC |
389 | if (backing == NULL) { |
390 | /* | |
391 | * We couldn't get the space we wanted, fall back to the | |
392 | * display engine requirement instead. The HW requires | |
393 | * the pitch to be 64 byte aligned | |
a6ba582d AC |
394 | */ |
395 | ||
396 | gtt_roll = 0; /* Don't use GTT accelerated scrolling */ | |
1b223c9e | 397 | pitch_lines = 64; |
a6ba582d AC |
398 | |
399 | mode_cmd.pitches[0] = ALIGN(mode_cmd.width * ((bpp + 7) / 8), 64); | |
400 | ||
401 | size = mode_cmd.pitches[0] * mode_cmd.height; | |
402 | size = ALIGN(size, PAGE_SIZE); | |
403 | ||
404 | /* Allocate the framebuffer in the GTT with stolen page backing */ | |
405 | backing = psbfb_alloc(dev, size); | |
406 | if (backing == NULL) | |
407 | return -ENOMEM; | |
408 | } | |
4d8d096e | 409 | |
bb849779 AC |
410 | memset(dev_priv->vram_addr + backing->offset, 0, size); |
411 | ||
4d8d096e AC |
412 | mutex_lock(&dev->struct_mutex); |
413 | ||
414 | info = framebuffer_alloc(0, device); | |
415 | if (!info) { | |
416 | ret = -ENOMEM; | |
417 | goto out_err1; | |
418 | } | |
419 | info->par = fbdev; | |
420 | ||
a9a644ac DA |
421 | mode_cmd.pixel_format = drm_mode_legacy_fb_format(bpp, depth); |
422 | ||
4d8d096e AC |
423 | ret = psb_framebuffer_init(dev, psbfb, &mode_cmd, backing); |
424 | if (ret) | |
425 | goto out_unref; | |
426 | ||
427 | fb = &psbfb->base; | |
428 | psbfb->fbdev = info; | |
429 | ||
430 | fbdev->psb_fb_helper.fb = fb; | |
431 | fbdev->psb_fb_helper.fbdev = info; | |
432 | ||
4578240b | 433 | drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth); |
4d8d096e AC |
434 | strcpy(info->fix.id, "psbfb"); |
435 | ||
436 | info->flags = FBINFO_DEFAULT; | |
1b223c9e AC |
437 | if (dev_priv->ops->accel_2d && pitch_lines > 8) /* 2D engine */ |
438 | info->fbops = &psbfb_ops; | |
439 | else if (gtt_roll) { /* GTT rolling seems best */ | |
a6ba582d AC |
440 | info->fbops = &psbfb_roll_ops; |
441 | info->flags |= FBINFO_HWACCEL_YPAN; | |
1b223c9e | 442 | } else /* Software */ |
a6ba582d | 443 | info->fbops = &psbfb_unaccel_ops; |
4d8d096e AC |
444 | |
445 | ret = fb_alloc_cmap(&info->cmap, 256, 0); | |
446 | if (ret) { | |
447 | ret = -ENOMEM; | |
448 | goto out_unref; | |
449 | } | |
450 | ||
451 | info->fix.smem_start = dev->mode_config.fb_base; | |
452 | info->fix.smem_len = size; | |
a6ba582d AC |
453 | info->fix.ywrapstep = gtt_roll; |
454 | info->fix.ypanstep = 0; | |
4d8d096e | 455 | |
dffc9ceb | 456 | /* Accessed stolen memory directly */ |
37214ca0 | 457 | info->screen_base = dev_priv->vram_addr + backing->offset; |
4d8d096e AC |
458 | info->screen_size = size; |
459 | ||
460 | if (dev_priv->gtt.stolen_size) { | |
461 | info->apertures = alloc_apertures(1); | |
462 | if (!info->apertures) { | |
463 | ret = -ENOMEM; | |
464 | goto out_unref; | |
465 | } | |
466 | info->apertures->ranges[0].base = dev->mode_config.fb_base; | |
467 | info->apertures->ranges[0].size = dev_priv->gtt.stolen_size; | |
468 | } | |
469 | ||
4d8d096e AC |
470 | drm_fb_helper_fill_var(info, &fbdev->psb_fb_helper, |
471 | sizes->fb_width, sizes->fb_height); | |
472 | ||
473 | info->fix.mmio_start = pci_resource_start(dev->pdev, 0); | |
474 | info->fix.mmio_len = pci_resource_len(dev->pdev, 0); | |
475 | ||
fb2a99e1 | 476 | /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */ |
4d8d096e | 477 | |
31a0685a | 478 | dev_dbg(dev->dev, "allocated %dx%d fb\n", |
4d8d096e AC |
479 | psbfb->base.width, psbfb->base.height); |
480 | ||
481 | mutex_unlock(&dev->struct_mutex); | |
482 | return 0; | |
483 | out_unref: | |
484 | if (backing->stolen) | |
485 | psb_gtt_free_range(dev, backing); | |
dffc9ceb | 486 | else |
4d8d096e | 487 | drm_gem_object_unreference(&backing->gem); |
4d8d096e AC |
488 | out_err1: |
489 | mutex_unlock(&dev->struct_mutex); | |
490 | psb_gtt_free_range(dev, backing); | |
491 | return ret; | |
492 | } | |
493 | ||
494 | /** | |
495 | * psb_user_framebuffer_create - create framebuffer | |
496 | * @dev: our DRM device | |
497 | * @filp: client file | |
498 | * @cmd: mode request | |
499 | * | |
500 | * Create a new framebuffer backed by a userspace GEM object | |
501 | */ | |
502 | static struct drm_framebuffer *psb_user_framebuffer_create | |
503 | (struct drm_device *dev, struct drm_file *filp, | |
a9a644ac | 504 | struct drm_mode_fb_cmd2 *cmd) |
4d8d096e AC |
505 | { |
506 | struct gtt_range *r; | |
507 | struct drm_gem_object *obj; | |
508 | ||
509 | /* | |
510 | * Find the GEM object and thus the gtt range object that is | |
511 | * to back this space | |
512 | */ | |
a9a644ac | 513 | obj = drm_gem_object_lookup(dev, filp, cmd->handles[0]); |
4d8d096e AC |
514 | if (obj == NULL) |
515 | return ERR_PTR(-ENOENT); | |
516 | ||
517 | /* Let the core code do all the work */ | |
518 | r = container_of(obj, struct gtt_range, gem); | |
519 | return psb_framebuffer_create(dev, cmd, r); | |
520 | } | |
521 | ||
522 | static void psbfb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green, | |
523 | u16 blue, int regno) | |
524 | { | |
3df546be AC |
525 | struct psb_intel_crtc *intel_crtc = to_psb_intel_crtc(crtc); |
526 | ||
527 | intel_crtc->lut_r[regno] = red >> 8; | |
528 | intel_crtc->lut_g[regno] = green >> 8; | |
529 | intel_crtc->lut_b[regno] = blue >> 8; | |
4d8d096e AC |
530 | } |
531 | ||
532 | static void psbfb_gamma_get(struct drm_crtc *crtc, u16 *red, | |
533 | u16 *green, u16 *blue, int regno) | |
534 | { | |
3df546be AC |
535 | struct psb_intel_crtc *intel_crtc = to_psb_intel_crtc(crtc); |
536 | ||
537 | *red = intel_crtc->lut_r[regno] << 8; | |
538 | *green = intel_crtc->lut_g[regno] << 8; | |
539 | *blue = intel_crtc->lut_b[regno] << 8; | |
4d8d096e AC |
540 | } |
541 | ||
542 | static int psbfb_probe(struct drm_fb_helper *helper, | |
543 | struct drm_fb_helper_surface_size *sizes) | |
544 | { | |
545 | struct psb_fbdev *psb_fbdev = (struct psb_fbdev *)helper; | |
3aad16d2 AC |
546 | struct drm_device *dev = psb_fbdev->psb_fb_helper.dev; |
547 | struct drm_psb_private *dev_priv = dev->dev_private; | |
4d8d096e | 548 | int new_fb = 0; |
3aad16d2 | 549 | int bytespp; |
4d8d096e AC |
550 | int ret; |
551 | ||
3aad16d2 AC |
552 | bytespp = sizes->surface_bpp / 8; |
553 | if (bytespp == 3) /* no 24bit packed */ | |
554 | bytespp = 4; | |
555 | ||
556 | /* If the mode will not fit in 32bit then switch to 16bit to get | |
557 | a console on full resolution. The X mode setting server will | |
558 | allocate its own 32bit GEM framebuffer */ | |
559 | if (ALIGN(sizes->fb_width * bytespp, 64) * sizes->fb_height > | |
560 | dev_priv->vram_stolen_size) { | |
561 | sizes->surface_bpp = 16; | |
562 | sizes->surface_depth = 16; | |
563 | } | |
564 | ||
4d8d096e AC |
565 | if (!helper->fb) { |
566 | ret = psbfb_create(psb_fbdev, sizes); | |
567 | if (ret) | |
568 | return ret; | |
569 | new_fb = 1; | |
570 | } | |
571 | return new_fb; | |
572 | } | |
573 | ||
232e6686 | 574 | static struct drm_fb_helper_funcs psb_fb_helper_funcs = { |
4d8d096e AC |
575 | .gamma_set = psbfb_gamma_set, |
576 | .gamma_get = psbfb_gamma_get, | |
577 | .fb_probe = psbfb_probe, | |
578 | }; | |
579 | ||
bc7f2b08 | 580 | static int psb_fbdev_destroy(struct drm_device *dev, struct psb_fbdev *fbdev) |
4d8d096e AC |
581 | { |
582 | struct fb_info *info; | |
583 | struct psb_framebuffer *psbfb = &fbdev->pfb; | |
584 | ||
585 | if (fbdev->psb_fb_helper.fbdev) { | |
586 | info = fbdev->psb_fb_helper.fbdev; | |
4d8d096e AC |
587 | unregister_framebuffer(info); |
588 | if (info->cmap.len) | |
589 | fb_dealloc_cmap(&info->cmap); | |
590 | framebuffer_release(info); | |
591 | } | |
592 | drm_fb_helper_fini(&fbdev->psb_fb_helper); | |
593 | drm_framebuffer_cleanup(&psbfb->base); | |
594 | ||
595 | if (psbfb->gtt) | |
596 | drm_gem_object_unreference(&psbfb->gtt->gem); | |
597 | return 0; | |
598 | } | |
599 | ||
600 | int psb_fbdev_init(struct drm_device *dev) | |
601 | { | |
602 | struct psb_fbdev *fbdev; | |
603 | struct drm_psb_private *dev_priv = dev->dev_private; | |
604 | ||
605 | fbdev = kzalloc(sizeof(struct psb_fbdev), GFP_KERNEL); | |
606 | if (!fbdev) { | |
607 | dev_err(dev->dev, "no memory\n"); | |
608 | return -ENOMEM; | |
609 | } | |
610 | ||
611 | dev_priv->fbdev = fbdev; | |
612 | fbdev->psb_fb_helper.funcs = &psb_fb_helper_funcs; | |
613 | ||
614 | drm_fb_helper_init(dev, &fbdev->psb_fb_helper, dev_priv->ops->crtcs, | |
615 | INTELFB_CONN_LIMIT); | |
616 | ||
617 | drm_fb_helper_single_add_all_connectors(&fbdev->psb_fb_helper); | |
618 | drm_fb_helper_initial_config(&fbdev->psb_fb_helper, 32); | |
619 | return 0; | |
620 | } | |
621 | ||
bc7f2b08 | 622 | static void psb_fbdev_fini(struct drm_device *dev) |
4d8d096e AC |
623 | { |
624 | struct drm_psb_private *dev_priv = dev->dev_private; | |
625 | ||
626 | if (!dev_priv->fbdev) | |
627 | return; | |
628 | ||
629 | psb_fbdev_destroy(dev, dev_priv->fbdev); | |
630 | kfree(dev_priv->fbdev); | |
631 | dev_priv->fbdev = NULL; | |
632 | } | |
633 | ||
634 | static void psbfb_output_poll_changed(struct drm_device *dev) | |
635 | { | |
636 | struct drm_psb_private *dev_priv = dev->dev_private; | |
637 | struct psb_fbdev *fbdev = (struct psb_fbdev *)dev_priv->fbdev; | |
638 | drm_fb_helper_hotplug_event(&fbdev->psb_fb_helper); | |
639 | } | |
640 | ||
641 | /** | |
642 | * psb_user_framebuffer_create_handle - add hamdle to a framebuffer | |
643 | * @fb: framebuffer | |
644 | * @file_priv: our DRM file | |
645 | * @handle: returned handle | |
646 | * | |
647 | * Our framebuffer object is a GTT range which also contains a GEM | |
648 | * object. We need to turn it into a handle for userspace. GEM will do | |
649 | * the work for us | |
650 | */ | |
651 | static int psb_user_framebuffer_create_handle(struct drm_framebuffer *fb, | |
652 | struct drm_file *file_priv, | |
653 | unsigned int *handle) | |
654 | { | |
655 | struct psb_framebuffer *psbfb = to_psb_fb(fb); | |
656 | struct gtt_range *r = psbfb->gtt; | |
657 | return drm_gem_handle_create(file_priv, &r->gem, handle); | |
658 | } | |
659 | ||
660 | /** | |
661 | * psb_user_framebuffer_destroy - destruct user created fb | |
662 | * @fb: framebuffer | |
663 | * | |
664 | * User framebuffers are backed by GEM objects so all we have to do is | |
665 | * clean up a bit and drop the reference, GEM will handle the fallout | |
666 | */ | |
667 | static void psb_user_framebuffer_destroy(struct drm_framebuffer *fb) | |
668 | { | |
669 | struct psb_framebuffer *psbfb = to_psb_fb(fb); | |
670 | struct gtt_range *r = psbfb->gtt; | |
671 | struct drm_device *dev = fb->dev; | |
672 | struct drm_psb_private *dev_priv = dev->dev_private; | |
673 | struct psb_fbdev *fbdev = dev_priv->fbdev; | |
674 | struct drm_crtc *crtc; | |
675 | int reset = 0; | |
676 | ||
677 | /* Should never get stolen memory for a user fb */ | |
678 | WARN_ON(r->stolen); | |
679 | ||
680 | /* Check if we are erroneously live */ | |
681 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) | |
682 | if (crtc->fb == fb) | |
683 | reset = 1; | |
684 | ||
685 | if (reset) | |
686 | /* | |
687 | * Now force a sane response before we permit the DRM CRTC | |
688 | * layer to do stupid things like blank the display. Instead | |
689 | * we reset this framebuffer as if the user had forced a reset. | |
690 | * We must do this before the cleanup so that the DRM layer | |
691 | * doesn't get a chance to stick its oar in where it isn't | |
692 | * wanted. | |
693 | */ | |
694 | drm_fb_helper_restore_fbdev_mode(&fbdev->psb_fb_helper); | |
695 | ||
696 | /* Let DRM do its clean up */ | |
697 | drm_framebuffer_cleanup(fb); | |
698 | /* We are no longer using the resource in GEM */ | |
699 | drm_gem_object_unreference_unlocked(&r->gem); | |
700 | kfree(fb); | |
701 | } | |
702 | ||
703 | static const struct drm_mode_config_funcs psb_mode_funcs = { | |
704 | .fb_create = psb_user_framebuffer_create, | |
705 | .output_poll_changed = psbfb_output_poll_changed, | |
706 | }; | |
707 | ||
708 | static int psb_create_backlight_property(struct drm_device *dev) | |
709 | { | |
710 | struct drm_psb_private *dev_priv = dev->dev_private; | |
711 | struct drm_property *backlight; | |
712 | ||
713 | if (dev_priv->backlight_property) | |
714 | return 0; | |
715 | ||
d9bc3c02 | 716 | backlight = drm_property_create_range(dev, 0, "backlight", 0, 100); |
4d8d096e AC |
717 | |
718 | dev_priv->backlight_property = backlight; | |
719 | ||
720 | return 0; | |
721 | } | |
722 | ||
723 | static void psb_setup_outputs(struct drm_device *dev) | |
724 | { | |
725 | struct drm_psb_private *dev_priv = dev->dev_private; | |
726 | struct drm_connector *connector; | |
727 | ||
728 | drm_mode_create_scaling_mode_property(dev); | |
729 | psb_create_backlight_property(dev); | |
730 | ||
731 | dev_priv->ops->output_init(dev); | |
732 | ||
733 | list_for_each_entry(connector, &dev->mode_config.connector_list, | |
734 | head) { | |
1730f89b PJ |
735 | struct psb_intel_encoder *psb_intel_encoder = |
736 | psb_intel_attached_encoder(connector); | |
737 | struct drm_encoder *encoder = &psb_intel_encoder->base; | |
4d8d096e AC |
738 | int crtc_mask = 0, clone_mask = 0; |
739 | ||
740 | /* valid crtcs */ | |
1730f89b | 741 | switch (psb_intel_encoder->type) { |
4d8d096e AC |
742 | case INTEL_OUTPUT_ANALOG: |
743 | crtc_mask = (1 << 0); | |
744 | clone_mask = (1 << INTEL_OUTPUT_ANALOG); | |
745 | break; | |
746 | case INTEL_OUTPUT_SDVO: | |
747 | crtc_mask = ((1 << 0) | (1 << 1)); | |
748 | clone_mask = (1 << INTEL_OUTPUT_SDVO); | |
749 | break; | |
750 | case INTEL_OUTPUT_LVDS: | |
d235e64a | 751 | crtc_mask = dev_priv->ops->lvds_mask; |
4d8d096e AC |
752 | clone_mask = (1 << INTEL_OUTPUT_LVDS); |
753 | break; | |
754 | case INTEL_OUTPUT_MIPI: | |
755 | crtc_mask = (1 << 0); | |
756 | clone_mask = (1 << INTEL_OUTPUT_MIPI); | |
757 | break; | |
758 | case INTEL_OUTPUT_MIPI2: | |
759 | crtc_mask = (1 << 2); | |
760 | clone_mask = (1 << INTEL_OUTPUT_MIPI2); | |
761 | break; | |
762 | case INTEL_OUTPUT_HDMI: | |
d235e64a | 763 | crtc_mask = dev_priv->ops->hdmi_mask; |
4d8d096e AC |
764 | clone_mask = (1 << INTEL_OUTPUT_HDMI); |
765 | break; | |
220801bd AC |
766 | case INTEL_OUTPUT_DISPLAYPORT: |
767 | crtc_mask = (1 << 0) | (1 << 1); | |
768 | clone_mask = (1 << INTEL_OUTPUT_DISPLAYPORT); | |
769 | break; | |
d112a816 ZY |
770 | case INTEL_OUTPUT_EDP: |
771 | crtc_mask = (1 << 1); | |
772 | clone_mask = (1 << INTEL_OUTPUT_EDP); | |
4d8d096e AC |
773 | } |
774 | encoder->possible_crtcs = crtc_mask; | |
775 | encoder->possible_clones = | |
776 | psb_intel_connector_clones(dev, clone_mask); | |
777 | } | |
778 | } | |
779 | ||
780 | void psb_modeset_init(struct drm_device *dev) | |
781 | { | |
782 | struct drm_psb_private *dev_priv = dev->dev_private; | |
783 | struct psb_intel_mode_device *mode_dev = &dev_priv->mode_dev; | |
784 | int i; | |
785 | ||
786 | drm_mode_config_init(dev); | |
787 | ||
788 | dev->mode_config.min_width = 0; | |
789 | dev->mode_config.min_height = 0; | |
790 | ||
e6ecefaa | 791 | dev->mode_config.funcs = &psb_mode_funcs; |
4d8d096e AC |
792 | |
793 | /* set memory base */ | |
dffc9ceb | 794 | /* Oaktrail and Poulsbo should use BAR 2*/ |
4d8d096e AC |
795 | pci_read_config_dword(dev->pdev, PSB_BSM, (u32 *) |
796 | &(dev->mode_config.fb_base)); | |
797 | ||
798 | /* num pipes is 2 for PSB but 1 for Mrst */ | |
799 | for (i = 0; i < dev_priv->num_pipe; i++) | |
800 | psb_intel_crtc_init(dev, i, mode_dev); | |
801 | ||
802 | dev->mode_config.max_width = 2048; | |
803 | dev->mode_config.max_height = 2048; | |
804 | ||
805 | psb_setup_outputs(dev); | |
d235e64a AC |
806 | |
807 | if (dev_priv->ops->errata) | |
808 | dev_priv->ops->errata(dev); | |
4ab2c7f1 AC |
809 | |
810 | dev_priv->modeset = true; | |
4d8d096e AC |
811 | } |
812 | ||
813 | void psb_modeset_cleanup(struct drm_device *dev) | |
814 | { | |
4ab2c7f1 AC |
815 | struct drm_psb_private *dev_priv = dev->dev_private; |
816 | if (dev_priv->modeset) { | |
817 | mutex_lock(&dev->struct_mutex); | |
4d8d096e | 818 | |
4ab2c7f1 AC |
819 | drm_kms_helper_poll_fini(dev); |
820 | psb_fbdev_fini(dev); | |
821 | drm_mode_config_cleanup(dev); | |
4d8d096e | 822 | |
4ab2c7f1 AC |
823 | mutex_unlock(&dev->struct_mutex); |
824 | } | |
4d8d096e | 825 | } |