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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; | |
61bb3fea PJ |
124 | unsigned long phys_addr = (unsigned long)dev_priv->stolen_base + |
125 | psbfb->gtt->offset; | |
4d8d096e AC |
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 | } | |
c7d73f6a DV |
263 | drm_helper_mode_fill_fb_struct(&fb->base, mode_cmd); |
264 | fb->gtt = gt; | |
4d8d096e AC |
265 | ret = drm_framebuffer_init(dev, &fb->base, &psb_fb_funcs); |
266 | if (ret) { | |
267 | dev_err(dev->dev, "framebuffer init failed: %d\n", ret); | |
268 | return ret; | |
269 | } | |
4d8d096e AC |
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) { | |
89c8233f DH |
324 | drm_gem_private_object_init(dev, &backing->gem, aligned_size); |
325 | return backing; | |
4d8d096e | 326 | } |
dffc9ceb | 327 | return NULL; |
4d8d096e AC |
328 | } |
329 | ||
330 | /** | |
331 | * psbfb_create - create a framebuffer | |
332 | * @fbdev: the framebuffer device | |
333 | * @sizes: specification of the layout | |
334 | * | |
335 | * Create a framebuffer to the specifications provided | |
336 | */ | |
337 | static int psbfb_create(struct psb_fbdev *fbdev, | |
338 | struct drm_fb_helper_surface_size *sizes) | |
339 | { | |
340 | struct drm_device *dev = fbdev->psb_fb_helper.dev; | |
341 | struct drm_psb_private *dev_priv = dev->dev_private; | |
342 | struct fb_info *info; | |
343 | struct drm_framebuffer *fb; | |
344 | struct psb_framebuffer *psbfb = &fbdev->pfb; | |
a9a644ac | 345 | struct drm_mode_fb_cmd2 mode_cmd; |
4d8d096e AC |
346 | struct device *device = &dev->pdev->dev; |
347 | int size; | |
348 | int ret; | |
349 | struct gtt_range *backing; | |
a9a644ac | 350 | u32 bpp, depth; |
1b223c9e AC |
351 | int gtt_roll = 0; |
352 | int pitch_lines = 0; | |
4d8d096e AC |
353 | |
354 | mode_cmd.width = sizes->surface_width; | |
355 | mode_cmd.height = sizes->surface_height; | |
a9a644ac | 356 | bpp = sizes->surface_bpp; |
6aa1ead1 | 357 | depth = sizes->surface_depth; |
4d8d096e AC |
358 | |
359 | /* No 24bit packed */ | |
a9a644ac DA |
360 | if (bpp == 24) |
361 | bpp = 32; | |
4d8d096e | 362 | |
1b223c9e AC |
363 | do { |
364 | /* | |
365 | * Acceleration via the GTT requires pitch to be | |
366 | * power of two aligned. Preferably page but less | |
367 | * is ok with some fonts | |
368 | */ | |
369 | mode_cmd.pitches[0] = ALIGN(mode_cmd.width * ((bpp + 7) / 8), 4096 >> pitch_lines); | |
1b223c9e AC |
370 | |
371 | size = mode_cmd.pitches[0] * mode_cmd.height; | |
372 | size = ALIGN(size, PAGE_SIZE); | |
373 | ||
374 | /* Allocate the fb in the GTT with stolen page backing */ | |
375 | backing = psbfb_alloc(dev, size); | |
376 | ||
377 | if (pitch_lines) | |
378 | pitch_lines *= 2; | |
379 | else | |
380 | pitch_lines = 1; | |
381 | gtt_roll++; | |
382 | } while (backing == NULL && pitch_lines <= 16); | |
4d8d096e | 383 | |
1b223c9e AC |
384 | /* The final pitch we accepted if we succeeded */ |
385 | pitch_lines /= 2; | |
4d8d096e | 386 | |
a6ba582d AC |
387 | if (backing == NULL) { |
388 | /* | |
389 | * We couldn't get the space we wanted, fall back to the | |
390 | * display engine requirement instead. The HW requires | |
391 | * the pitch to be 64 byte aligned | |
a6ba582d AC |
392 | */ |
393 | ||
394 | gtt_roll = 0; /* Don't use GTT accelerated scrolling */ | |
1b223c9e | 395 | pitch_lines = 64; |
a6ba582d AC |
396 | |
397 | mode_cmd.pitches[0] = ALIGN(mode_cmd.width * ((bpp + 7) / 8), 64); | |
398 | ||
399 | size = mode_cmd.pitches[0] * mode_cmd.height; | |
400 | size = ALIGN(size, PAGE_SIZE); | |
401 | ||
402 | /* Allocate the framebuffer in the GTT with stolen page backing */ | |
403 | backing = psbfb_alloc(dev, size); | |
404 | if (backing == NULL) | |
405 | return -ENOMEM; | |
406 | } | |
4d8d096e | 407 | |
bb849779 AC |
408 | memset(dev_priv->vram_addr + backing->offset, 0, size); |
409 | ||
4d8d096e AC |
410 | mutex_lock(&dev->struct_mutex); |
411 | ||
412 | info = framebuffer_alloc(0, device); | |
413 | if (!info) { | |
414 | ret = -ENOMEM; | |
415 | goto out_err1; | |
416 | } | |
417 | info->par = fbdev; | |
418 | ||
a9a644ac DA |
419 | mode_cmd.pixel_format = drm_mode_legacy_fb_format(bpp, depth); |
420 | ||
4d8d096e AC |
421 | ret = psb_framebuffer_init(dev, psbfb, &mode_cmd, backing); |
422 | if (ret) | |
423 | goto out_unref; | |
424 | ||
425 | fb = &psbfb->base; | |
426 | psbfb->fbdev = info; | |
427 | ||
428 | fbdev->psb_fb_helper.fb = fb; | |
429 | fbdev->psb_fb_helper.fbdev = info; | |
430 | ||
4578240b | 431 | drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth); |
f9d8149a | 432 | strcpy(info->fix.id, "psbdrmfb"); |
4d8d096e AC |
433 | |
434 | info->flags = FBINFO_DEFAULT; | |
1b223c9e AC |
435 | if (dev_priv->ops->accel_2d && pitch_lines > 8) /* 2D engine */ |
436 | info->fbops = &psbfb_ops; | |
437 | else if (gtt_roll) { /* GTT rolling seems best */ | |
a6ba582d AC |
438 | info->fbops = &psbfb_roll_ops; |
439 | info->flags |= FBINFO_HWACCEL_YPAN; | |
1b223c9e | 440 | } else /* Software */ |
a6ba582d | 441 | info->fbops = &psbfb_unaccel_ops; |
4d8d096e AC |
442 | |
443 | ret = fb_alloc_cmap(&info->cmap, 256, 0); | |
444 | if (ret) { | |
445 | ret = -ENOMEM; | |
446 | goto out_unref; | |
447 | } | |
448 | ||
449 | info->fix.smem_start = dev->mode_config.fb_base; | |
450 | info->fix.smem_len = size; | |
a6ba582d AC |
451 | info->fix.ywrapstep = gtt_roll; |
452 | info->fix.ypanstep = 0; | |
4d8d096e | 453 | |
dffc9ceb | 454 | /* Accessed stolen memory directly */ |
37214ca0 | 455 | info->screen_base = dev_priv->vram_addr + backing->offset; |
4d8d096e AC |
456 | info->screen_size = size; |
457 | ||
458 | if (dev_priv->gtt.stolen_size) { | |
459 | info->apertures = alloc_apertures(1); | |
460 | if (!info->apertures) { | |
461 | ret = -ENOMEM; | |
462 | goto out_unref; | |
463 | } | |
464 | info->apertures->ranges[0].base = dev->mode_config.fb_base; | |
465 | info->apertures->ranges[0].size = dev_priv->gtt.stolen_size; | |
466 | } | |
467 | ||
4d8d096e AC |
468 | drm_fb_helper_fill_var(info, &fbdev->psb_fb_helper, |
469 | sizes->fb_width, sizes->fb_height); | |
470 | ||
471 | info->fix.mmio_start = pci_resource_start(dev->pdev, 0); | |
472 | info->fix.mmio_len = pci_resource_len(dev->pdev, 0); | |
473 | ||
fb2a99e1 | 474 | /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */ |
4d8d096e | 475 | |
31a0685a | 476 | dev_dbg(dev->dev, "allocated %dx%d fb\n", |
4d8d096e AC |
477 | psbfb->base.width, psbfb->base.height); |
478 | ||
479 | mutex_unlock(&dev->struct_mutex); | |
480 | return 0; | |
481 | out_unref: | |
482 | if (backing->stolen) | |
483 | psb_gtt_free_range(dev, backing); | |
dffc9ceb | 484 | else |
4d8d096e | 485 | drm_gem_object_unreference(&backing->gem); |
4d8d096e AC |
486 | out_err1: |
487 | mutex_unlock(&dev->struct_mutex); | |
488 | psb_gtt_free_range(dev, backing); | |
489 | return ret; | |
490 | } | |
491 | ||
492 | /** | |
493 | * psb_user_framebuffer_create - create framebuffer | |
494 | * @dev: our DRM device | |
495 | * @filp: client file | |
496 | * @cmd: mode request | |
497 | * | |
498 | * Create a new framebuffer backed by a userspace GEM object | |
499 | */ | |
500 | static struct drm_framebuffer *psb_user_framebuffer_create | |
501 | (struct drm_device *dev, struct drm_file *filp, | |
a9a644ac | 502 | struct drm_mode_fb_cmd2 *cmd) |
4d8d096e AC |
503 | { |
504 | struct gtt_range *r; | |
505 | struct drm_gem_object *obj; | |
506 | ||
507 | /* | |
508 | * Find the GEM object and thus the gtt range object that is | |
509 | * to back this space | |
510 | */ | |
a9a644ac | 511 | obj = drm_gem_object_lookup(dev, filp, cmd->handles[0]); |
4d8d096e AC |
512 | if (obj == NULL) |
513 | return ERR_PTR(-ENOENT); | |
514 | ||
515 | /* Let the core code do all the work */ | |
516 | r = container_of(obj, struct gtt_range, gem); | |
517 | return psb_framebuffer_create(dev, cmd, r); | |
518 | } | |
519 | ||
520 | static void psbfb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green, | |
521 | u16 blue, int regno) | |
522 | { | |
6306865d | 523 | struct gma_crtc *gma_crtc = to_gma_crtc(crtc); |
3df546be | 524 | |
6306865d PJ |
525 | gma_crtc->lut_r[regno] = red >> 8; |
526 | gma_crtc->lut_g[regno] = green >> 8; | |
527 | gma_crtc->lut_b[regno] = blue >> 8; | |
4d8d096e AC |
528 | } |
529 | ||
530 | static void psbfb_gamma_get(struct drm_crtc *crtc, u16 *red, | |
531 | u16 *green, u16 *blue, int regno) | |
532 | { | |
6306865d | 533 | struct gma_crtc *gma_crtc = to_gma_crtc(crtc); |
3df546be | 534 | |
6306865d PJ |
535 | *red = gma_crtc->lut_r[regno] << 8; |
536 | *green = gma_crtc->lut_g[regno] << 8; | |
537 | *blue = gma_crtc->lut_b[regno] << 8; | |
4d8d096e AC |
538 | } |
539 | ||
540 | static int psbfb_probe(struct drm_fb_helper *helper, | |
541 | struct drm_fb_helper_surface_size *sizes) | |
542 | { | |
543 | struct psb_fbdev *psb_fbdev = (struct psb_fbdev *)helper; | |
3aad16d2 AC |
544 | struct drm_device *dev = psb_fbdev->psb_fb_helper.dev; |
545 | struct drm_psb_private *dev_priv = dev->dev_private; | |
3aad16d2 | 546 | int bytespp; |
4d8d096e | 547 | |
3aad16d2 AC |
548 | bytespp = sizes->surface_bpp / 8; |
549 | if (bytespp == 3) /* no 24bit packed */ | |
550 | bytespp = 4; | |
551 | ||
552 | /* If the mode will not fit in 32bit then switch to 16bit to get | |
553 | a console on full resolution. The X mode setting server will | |
554 | allocate its own 32bit GEM framebuffer */ | |
555 | if (ALIGN(sizes->fb_width * bytespp, 64) * sizes->fb_height > | |
556 | dev_priv->vram_stolen_size) { | |
557 | sizes->surface_bpp = 16; | |
558 | sizes->surface_depth = 16; | |
559 | } | |
560 | ||
cd5428a5 | 561 | return psbfb_create(psb_fbdev, sizes); |
4d8d096e AC |
562 | } |
563 | ||
232e6686 | 564 | static struct drm_fb_helper_funcs psb_fb_helper_funcs = { |
4d8d096e AC |
565 | .gamma_set = psbfb_gamma_set, |
566 | .gamma_get = psbfb_gamma_get, | |
567 | .fb_probe = psbfb_probe, | |
568 | }; | |
569 | ||
bc7f2b08 | 570 | static int psb_fbdev_destroy(struct drm_device *dev, struct psb_fbdev *fbdev) |
4d8d096e AC |
571 | { |
572 | struct fb_info *info; | |
573 | struct psb_framebuffer *psbfb = &fbdev->pfb; | |
574 | ||
575 | if (fbdev->psb_fb_helper.fbdev) { | |
576 | info = fbdev->psb_fb_helper.fbdev; | |
4d8d096e AC |
577 | unregister_framebuffer(info); |
578 | if (info->cmap.len) | |
579 | fb_dealloc_cmap(&info->cmap); | |
580 | framebuffer_release(info); | |
581 | } | |
582 | drm_fb_helper_fini(&fbdev->psb_fb_helper); | |
36206361 | 583 | drm_framebuffer_unregister_private(&psbfb->base); |
4d8d096e AC |
584 | drm_framebuffer_cleanup(&psbfb->base); |
585 | ||
586 | if (psbfb->gtt) | |
587 | drm_gem_object_unreference(&psbfb->gtt->gem); | |
588 | return 0; | |
589 | } | |
590 | ||
591 | int psb_fbdev_init(struct drm_device *dev) | |
592 | { | |
593 | struct psb_fbdev *fbdev; | |
594 | struct drm_psb_private *dev_priv = dev->dev_private; | |
595 | ||
596 | fbdev = kzalloc(sizeof(struct psb_fbdev), GFP_KERNEL); | |
597 | if (!fbdev) { | |
598 | dev_err(dev->dev, "no memory\n"); | |
599 | return -ENOMEM; | |
600 | } | |
601 | ||
602 | dev_priv->fbdev = fbdev; | |
603 | fbdev->psb_fb_helper.funcs = &psb_fb_helper_funcs; | |
604 | ||
605 | drm_fb_helper_init(dev, &fbdev->psb_fb_helper, dev_priv->ops->crtcs, | |
606 | INTELFB_CONN_LIMIT); | |
607 | ||
608 | drm_fb_helper_single_add_all_connectors(&fbdev->psb_fb_helper); | |
76a39dbf DV |
609 | |
610 | /* disable all the possible outputs/crtcs before entering KMS mode */ | |
611 | drm_helper_disable_unused_functions(dev); | |
612 | ||
4d8d096e AC |
613 | drm_fb_helper_initial_config(&fbdev->psb_fb_helper, 32); |
614 | return 0; | |
615 | } | |
616 | ||
bc7f2b08 | 617 | static void psb_fbdev_fini(struct drm_device *dev) |
4d8d096e AC |
618 | { |
619 | struct drm_psb_private *dev_priv = dev->dev_private; | |
620 | ||
621 | if (!dev_priv->fbdev) | |
622 | return; | |
623 | ||
624 | psb_fbdev_destroy(dev, dev_priv->fbdev); | |
625 | kfree(dev_priv->fbdev); | |
626 | dev_priv->fbdev = NULL; | |
627 | } | |
628 | ||
629 | static void psbfb_output_poll_changed(struct drm_device *dev) | |
630 | { | |
631 | struct drm_psb_private *dev_priv = dev->dev_private; | |
632 | struct psb_fbdev *fbdev = (struct psb_fbdev *)dev_priv->fbdev; | |
633 | drm_fb_helper_hotplug_event(&fbdev->psb_fb_helper); | |
634 | } | |
635 | ||
636 | /** | |
637 | * psb_user_framebuffer_create_handle - add hamdle to a framebuffer | |
638 | * @fb: framebuffer | |
639 | * @file_priv: our DRM file | |
640 | * @handle: returned handle | |
641 | * | |
642 | * Our framebuffer object is a GTT range which also contains a GEM | |
643 | * object. We need to turn it into a handle for userspace. GEM will do | |
644 | * the work for us | |
645 | */ | |
646 | static int psb_user_framebuffer_create_handle(struct drm_framebuffer *fb, | |
647 | struct drm_file *file_priv, | |
648 | unsigned int *handle) | |
649 | { | |
650 | struct psb_framebuffer *psbfb = to_psb_fb(fb); | |
651 | struct gtt_range *r = psbfb->gtt; | |
652 | return drm_gem_handle_create(file_priv, &r->gem, handle); | |
653 | } | |
654 | ||
655 | /** | |
656 | * psb_user_framebuffer_destroy - destruct user created fb | |
657 | * @fb: framebuffer | |
658 | * | |
659 | * User framebuffers are backed by GEM objects so all we have to do is | |
660 | * clean up a bit and drop the reference, GEM will handle the fallout | |
661 | */ | |
662 | static void psb_user_framebuffer_destroy(struct drm_framebuffer *fb) | |
663 | { | |
664 | struct psb_framebuffer *psbfb = to_psb_fb(fb); | |
665 | struct gtt_range *r = psbfb->gtt; | |
4d8d096e AC |
666 | |
667 | /* Let DRM do its clean up */ | |
668 | drm_framebuffer_cleanup(fb); | |
669 | /* We are no longer using the resource in GEM */ | |
670 | drm_gem_object_unreference_unlocked(&r->gem); | |
671 | kfree(fb); | |
672 | } | |
673 | ||
674 | static const struct drm_mode_config_funcs psb_mode_funcs = { | |
675 | .fb_create = psb_user_framebuffer_create, | |
676 | .output_poll_changed = psbfb_output_poll_changed, | |
677 | }; | |
678 | ||
679 | static int psb_create_backlight_property(struct drm_device *dev) | |
680 | { | |
681 | struct drm_psb_private *dev_priv = dev->dev_private; | |
682 | struct drm_property *backlight; | |
683 | ||
684 | if (dev_priv->backlight_property) | |
685 | return 0; | |
686 | ||
d9bc3c02 | 687 | backlight = drm_property_create_range(dev, 0, "backlight", 0, 100); |
4d8d096e AC |
688 | |
689 | dev_priv->backlight_property = backlight; | |
690 | ||
691 | return 0; | |
692 | } | |
693 | ||
694 | static void psb_setup_outputs(struct drm_device *dev) | |
695 | { | |
696 | struct drm_psb_private *dev_priv = dev->dev_private; | |
697 | struct drm_connector *connector; | |
698 | ||
699 | drm_mode_create_scaling_mode_property(dev); | |
700 | psb_create_backlight_property(dev); | |
701 | ||
702 | dev_priv->ops->output_init(dev); | |
703 | ||
704 | list_for_each_entry(connector, &dev->mode_config.connector_list, | |
705 | head) { | |
367e4408 PJ |
706 | struct gma_encoder *gma_encoder = gma_attached_encoder(connector); |
707 | struct drm_encoder *encoder = &gma_encoder->base; | |
4d8d096e AC |
708 | int crtc_mask = 0, clone_mask = 0; |
709 | ||
710 | /* valid crtcs */ | |
367e4408 | 711 | switch (gma_encoder->type) { |
4d8d096e AC |
712 | case INTEL_OUTPUT_ANALOG: |
713 | crtc_mask = (1 << 0); | |
714 | clone_mask = (1 << INTEL_OUTPUT_ANALOG); | |
715 | break; | |
716 | case INTEL_OUTPUT_SDVO: | |
717 | crtc_mask = ((1 << 0) | (1 << 1)); | |
718 | clone_mask = (1 << INTEL_OUTPUT_SDVO); | |
719 | break; | |
720 | case INTEL_OUTPUT_LVDS: | |
d235e64a | 721 | crtc_mask = dev_priv->ops->lvds_mask; |
4d8d096e AC |
722 | clone_mask = (1 << INTEL_OUTPUT_LVDS); |
723 | break; | |
724 | case INTEL_OUTPUT_MIPI: | |
725 | crtc_mask = (1 << 0); | |
726 | clone_mask = (1 << INTEL_OUTPUT_MIPI); | |
727 | break; | |
728 | case INTEL_OUTPUT_MIPI2: | |
729 | crtc_mask = (1 << 2); | |
730 | clone_mask = (1 << INTEL_OUTPUT_MIPI2); | |
731 | break; | |
732 | case INTEL_OUTPUT_HDMI: | |
d235e64a | 733 | crtc_mask = dev_priv->ops->hdmi_mask; |
4d8d096e AC |
734 | clone_mask = (1 << INTEL_OUTPUT_HDMI); |
735 | break; | |
220801bd AC |
736 | case INTEL_OUTPUT_DISPLAYPORT: |
737 | crtc_mask = (1 << 0) | (1 << 1); | |
738 | clone_mask = (1 << INTEL_OUTPUT_DISPLAYPORT); | |
739 | break; | |
d112a816 ZY |
740 | case INTEL_OUTPUT_EDP: |
741 | crtc_mask = (1 << 1); | |
742 | clone_mask = (1 << INTEL_OUTPUT_EDP); | |
4d8d096e AC |
743 | } |
744 | encoder->possible_crtcs = crtc_mask; | |
745 | encoder->possible_clones = | |
a3d5d75f | 746 | gma_connector_clones(dev, clone_mask); |
4d8d096e AC |
747 | } |
748 | } | |
749 | ||
750 | void psb_modeset_init(struct drm_device *dev) | |
751 | { | |
752 | struct drm_psb_private *dev_priv = dev->dev_private; | |
753 | struct psb_intel_mode_device *mode_dev = &dev_priv->mode_dev; | |
754 | int i; | |
755 | ||
756 | drm_mode_config_init(dev); | |
757 | ||
758 | dev->mode_config.min_width = 0; | |
759 | dev->mode_config.min_height = 0; | |
760 | ||
e6ecefaa | 761 | dev->mode_config.funcs = &psb_mode_funcs; |
4d8d096e AC |
762 | |
763 | /* set memory base */ | |
dffc9ceb | 764 | /* Oaktrail and Poulsbo should use BAR 2*/ |
4d8d096e AC |
765 | pci_read_config_dword(dev->pdev, PSB_BSM, (u32 *) |
766 | &(dev->mode_config.fb_base)); | |
767 | ||
768 | /* num pipes is 2 for PSB but 1 for Mrst */ | |
769 | for (i = 0; i < dev_priv->num_pipe; i++) | |
770 | psb_intel_crtc_init(dev, i, mode_dev); | |
771 | ||
cbbd379a PJ |
772 | dev->mode_config.max_width = 4096; |
773 | dev->mode_config.max_height = 4096; | |
4d8d096e AC |
774 | |
775 | psb_setup_outputs(dev); | |
d235e64a AC |
776 | |
777 | if (dev_priv->ops->errata) | |
778 | dev_priv->ops->errata(dev); | |
4ab2c7f1 AC |
779 | |
780 | dev_priv->modeset = true; | |
4d8d096e AC |
781 | } |
782 | ||
783 | void psb_modeset_cleanup(struct drm_device *dev) | |
784 | { | |
4ab2c7f1 AC |
785 | struct drm_psb_private *dev_priv = dev->dev_private; |
786 | if (dev_priv->modeset) { | |
787 | mutex_lock(&dev->struct_mutex); | |
4d8d096e | 788 | |
4ab2c7f1 AC |
789 | drm_kms_helper_poll_fini(dev); |
790 | psb_fbdev_fini(dev); | |
791 | drm_mode_config_cleanup(dev); | |
4d8d096e | 792 | |
4ab2c7f1 AC |
793 | mutex_unlock(&dev->struct_mutex); |
794 | } | |
4d8d096e | 795 | } |