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