Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright © 2007 David Airlie |
| 3 | * |
| 4 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 5 | * copy of this software and associated documentation files (the "Software"), |
| 6 | * to deal in the Software without restriction, including without limitation |
| 7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 8 | * and/or sell copies of the Software, and to permit persons to whom the |
| 9 | * Software is furnished to do so, subject to the following conditions: |
| 10 | * |
| 11 | * The above copyright notice and this permission notice (including the next |
| 12 | * paragraph) shall be included in all copies or substantial portions of the |
| 13 | * Software. |
| 14 | * |
| 15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 18 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| 20 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
| 21 | * DEALINGS IN THE SOFTWARE. |
| 22 | * |
| 23 | * Authors: |
| 24 | * David Airlie |
| 25 | */ |
| 26 | |
| 27 | #include <linux/module.h> |
| 28 | #include <linux/kernel.h> |
| 29 | #include <linux/errno.h> |
| 30 | #include <linux/string.h> |
| 31 | #include <linux/mm.h> |
| 32 | #include <linux/tty.h> |
| 33 | #include <linux/slab.h> |
| 34 | #include <linux/sysrq.h> |
| 35 | #include <linux/delay.h> |
| 36 | #include <linux/fb.h> |
| 37 | #include <linux/init.h> |
| 38 | |
| 39 | #include "drmP.h" |
| 40 | #include "drm.h" |
| 41 | #include "drm_crtc.h" |
| 42 | #include "intel_drv.h" |
| 43 | #include "i915_drm.h" |
| 44 | #include "i915_drv.h" |
| 45 | |
| 46 | struct intelfb_par { |
| 47 | struct drm_device *dev; |
| 48 | struct drm_display_mode *our_mode; |
| 49 | struct intel_framebuffer *intel_fb; |
| 50 | int crtc_count; |
| 51 | /* crtc currently bound to this */ |
| 52 | uint32_t crtc_ids[2]; |
| 53 | }; |
| 54 | |
| 55 | static int intelfb_setcolreg(unsigned regno, unsigned red, unsigned green, |
| 56 | unsigned blue, unsigned transp, |
| 57 | struct fb_info *info) |
| 58 | { |
| 59 | struct intelfb_par *par = info->par; |
| 60 | struct drm_device *dev = par->dev; |
| 61 | struct drm_crtc *crtc; |
| 62 | int i; |
| 63 | |
| 64 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
| 65 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); |
| 66 | struct drm_mode_set *modeset = &intel_crtc->mode_set; |
| 67 | struct drm_framebuffer *fb = modeset->fb; |
| 68 | |
| 69 | for (i = 0; i < par->crtc_count; i++) |
| 70 | if (crtc->base.id == par->crtc_ids[i]) |
| 71 | break; |
| 72 | |
| 73 | if (i == par->crtc_count) |
| 74 | continue; |
| 75 | |
| 76 | |
| 77 | if (regno > 255) |
| 78 | return 1; |
| 79 | |
| 80 | if (fb->depth == 8) { |
| 81 | intel_crtc_fb_gamma_set(crtc, red, green, blue, regno); |
| 82 | return 0; |
| 83 | } |
| 84 | |
| 85 | if (regno < 16) { |
| 86 | switch (fb->depth) { |
| 87 | case 15: |
| 88 | fb->pseudo_palette[regno] = ((red & 0xf800) >> 1) | |
| 89 | ((green & 0xf800) >> 6) | |
| 90 | ((blue & 0xf800) >> 11); |
| 91 | break; |
| 92 | case 16: |
| 93 | fb->pseudo_palette[regno] = (red & 0xf800) | |
| 94 | ((green & 0xfc00) >> 5) | |
| 95 | ((blue & 0xf800) >> 11); |
| 96 | break; |
| 97 | case 24: |
| 98 | case 32: |
| 99 | fb->pseudo_palette[regno] = ((red & 0xff00) << 8) | |
| 100 | (green & 0xff00) | |
| 101 | ((blue & 0xff00) >> 8); |
| 102 | break; |
| 103 | } |
| 104 | } |
| 105 | } |
| 106 | return 0; |
| 107 | } |
| 108 | |
| 109 | static int intelfb_check_var(struct fb_var_screeninfo *var, |
| 110 | struct fb_info *info) |
| 111 | { |
| 112 | struct intelfb_par *par = info->par; |
| 113 | struct intel_framebuffer *intel_fb = par->intel_fb; |
| 114 | struct drm_framebuffer *fb = &intel_fb->base; |
| 115 | int depth; |
| 116 | |
| 117 | if (var->pixclock == -1 || !var->pixclock) |
| 118 | return -EINVAL; |
| 119 | |
| 120 | /* Need to resize the fb object !!! */ |
| 121 | if (var->xres > fb->width || var->yres > fb->height) { |
| 122 | DRM_ERROR("Requested width/height is greater than current fb object %dx%d > %dx%d\n",var->xres,var->yres,fb->width,fb->height); |
| 123 | DRM_ERROR("Need resizing code.\n"); |
| 124 | return -EINVAL; |
| 125 | } |
| 126 | |
| 127 | switch (var->bits_per_pixel) { |
| 128 | case 16: |
| 129 | depth = (var->green.length == 6) ? 16 : 15; |
| 130 | break; |
| 131 | case 32: |
| 132 | depth = (var->transp.length > 0) ? 32 : 24; |
| 133 | break; |
| 134 | default: |
| 135 | depth = var->bits_per_pixel; |
| 136 | break; |
| 137 | } |
| 138 | |
| 139 | switch (depth) { |
| 140 | case 8: |
| 141 | var->red.offset = 0; |
| 142 | var->green.offset = 0; |
| 143 | var->blue.offset = 0; |
| 144 | var->red.length = 8; |
| 145 | var->green.length = 8; |
| 146 | var->blue.length = 8; |
| 147 | var->transp.length = 0; |
| 148 | var->transp.offset = 0; |
| 149 | break; |
| 150 | case 15: |
| 151 | var->red.offset = 10; |
| 152 | var->green.offset = 5; |
| 153 | var->blue.offset = 0; |
| 154 | var->red.length = 5; |
| 155 | var->green.length = 5; |
| 156 | var->blue.length = 5; |
| 157 | var->transp.length = 1; |
| 158 | var->transp.offset = 15; |
| 159 | break; |
| 160 | case 16: |
| 161 | var->red.offset = 11; |
| 162 | var->green.offset = 5; |
| 163 | var->blue.offset = 0; |
| 164 | var->red.length = 5; |
| 165 | var->green.length = 6; |
| 166 | var->blue.length = 5; |
| 167 | var->transp.length = 0; |
| 168 | var->transp.offset = 0; |
| 169 | break; |
| 170 | case 24: |
| 171 | var->red.offset = 16; |
| 172 | var->green.offset = 8; |
| 173 | var->blue.offset = 0; |
| 174 | var->red.length = 8; |
| 175 | var->green.length = 8; |
| 176 | var->blue.length = 8; |
| 177 | var->transp.length = 0; |
| 178 | var->transp.offset = 0; |
| 179 | break; |
| 180 | case 32: |
| 181 | var->red.offset = 16; |
| 182 | var->green.offset = 8; |
| 183 | var->blue.offset = 0; |
| 184 | var->red.length = 8; |
| 185 | var->green.length = 8; |
| 186 | var->blue.length = 8; |
| 187 | var->transp.length = 8; |
| 188 | var->transp.offset = 24; |
| 189 | break; |
| 190 | default: |
| 191 | return -EINVAL; |
| 192 | } |
| 193 | |
| 194 | return 0; |
| 195 | } |
| 196 | |
| 197 | /* this will let fbcon do the mode init */ |
| 198 | /* FIXME: take mode config lock? */ |
| 199 | static int intelfb_set_par(struct fb_info *info) |
| 200 | { |
| 201 | struct intelfb_par *par = info->par; |
| 202 | struct drm_device *dev = par->dev; |
| 203 | struct fb_var_screeninfo *var = &info->var; |
| 204 | int i; |
| 205 | |
| 206 | DRM_DEBUG("%d %d\n", var->xres, var->pixclock); |
| 207 | |
| 208 | if (var->pixclock != -1) { |
| 209 | |
| 210 | DRM_ERROR("PIXEL CLCOK SET\n"); |
| 211 | return -EINVAL; |
| 212 | } else { |
| 213 | struct drm_crtc *crtc; |
| 214 | int ret; |
| 215 | |
| 216 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
| 217 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); |
| 218 | |
| 219 | for (i = 0; i < par->crtc_count; i++) |
| 220 | if (crtc->base.id == par->crtc_ids[i]) |
| 221 | break; |
| 222 | |
| 223 | if (i == par->crtc_count) |
| 224 | continue; |
| 225 | |
| 226 | if (crtc->fb == intel_crtc->mode_set.fb) { |
| 227 | mutex_lock(&dev->mode_config.mutex); |
| 228 | ret = crtc->funcs->set_config(&intel_crtc->mode_set); |
| 229 | mutex_unlock(&dev->mode_config.mutex); |
| 230 | if (ret) |
| 231 | return ret; |
| 232 | } |
| 233 | } |
| 234 | return 0; |
| 235 | } |
| 236 | } |
| 237 | |
| 238 | static int intelfb_pan_display(struct fb_var_screeninfo *var, |
| 239 | struct fb_info *info) |
| 240 | { |
| 241 | struct intelfb_par *par = info->par; |
| 242 | struct drm_device *dev = par->dev; |
| 243 | struct drm_mode_set *modeset; |
| 244 | struct drm_crtc *crtc; |
| 245 | struct intel_crtc *intel_crtc; |
| 246 | int ret = 0; |
| 247 | int i; |
| 248 | |
| 249 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
| 250 | for (i = 0; i < par->crtc_count; i++) |
| 251 | if (crtc->base.id == par->crtc_ids[i]) |
| 252 | break; |
| 253 | |
| 254 | if (i == par->crtc_count) |
| 255 | continue; |
| 256 | |
| 257 | intel_crtc = to_intel_crtc(crtc); |
| 258 | modeset = &intel_crtc->mode_set; |
| 259 | |
| 260 | modeset->x = var->xoffset; |
| 261 | modeset->y = var->yoffset; |
| 262 | |
| 263 | if (modeset->num_connectors) { |
| 264 | mutex_lock(&dev->mode_config.mutex); |
| 265 | ret = crtc->funcs->set_config(modeset); |
| 266 | mutex_unlock(&dev->mode_config.mutex); |
| 267 | if (!ret) { |
| 268 | info->var.xoffset = var->xoffset; |
| 269 | info->var.yoffset = var->yoffset; |
| 270 | } |
| 271 | } |
| 272 | } |
| 273 | |
| 274 | return ret; |
| 275 | } |
| 276 | |
| 277 | static void intelfb_on(struct fb_info *info) |
| 278 | { |
| 279 | struct intelfb_par *par = info->par; |
| 280 | struct drm_device *dev = par->dev; |
| 281 | struct drm_crtc *crtc; |
| 282 | struct drm_encoder *encoder; |
| 283 | int i; |
| 284 | |
| 285 | /* |
| 286 | * For each CRTC in this fb, find all associated encoders |
| 287 | * and turn them off, then turn off the CRTC. |
| 288 | */ |
| 289 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
| 290 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
| 291 | |
| 292 | for (i = 0; i < par->crtc_count; i++) |
| 293 | if (crtc->base.id == par->crtc_ids[i]) |
| 294 | break; |
| 295 | |
| 296 | crtc_funcs->dpms(crtc, DRM_MODE_DPMS_ON); |
| 297 | |
| 298 | /* Found a CRTC on this fb, now find encoders */ |
| 299 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
| 300 | if (encoder->crtc == crtc) { |
| 301 | struct drm_encoder_helper_funcs *encoder_funcs; |
| 302 | encoder_funcs = encoder->helper_private; |
| 303 | encoder_funcs->dpms(encoder, DRM_MODE_DPMS_ON); |
| 304 | } |
| 305 | } |
| 306 | } |
| 307 | } |
| 308 | |
| 309 | static void intelfb_off(struct fb_info *info, int dpms_mode) |
| 310 | { |
| 311 | struct intelfb_par *par = info->par; |
| 312 | struct drm_device *dev = par->dev; |
| 313 | struct drm_crtc *crtc; |
| 314 | struct drm_encoder *encoder; |
| 315 | int i; |
| 316 | |
| 317 | /* |
| 318 | * For each CRTC in this fb, find all associated encoders |
| 319 | * and turn them off, then turn off the CRTC. |
| 320 | */ |
| 321 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
| 322 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
| 323 | |
| 324 | for (i = 0; i < par->crtc_count; i++) |
| 325 | if (crtc->base.id == par->crtc_ids[i]) |
| 326 | break; |
| 327 | |
| 328 | /* Found a CRTC on this fb, now find encoders */ |
| 329 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
| 330 | if (encoder->crtc == crtc) { |
| 331 | struct drm_encoder_helper_funcs *encoder_funcs; |
| 332 | encoder_funcs = encoder->helper_private; |
| 333 | encoder_funcs->dpms(encoder, dpms_mode); |
| 334 | } |
| 335 | } |
| 336 | if (dpms_mode == DRM_MODE_DPMS_OFF) |
| 337 | crtc_funcs->dpms(crtc, dpms_mode); |
| 338 | } |
| 339 | } |
| 340 | |
| 341 | int intelfb_blank(int blank, struct fb_info *info) |
| 342 | { |
| 343 | switch (blank) { |
| 344 | case FB_BLANK_UNBLANK: |
| 345 | intelfb_on(info); |
| 346 | break; |
| 347 | case FB_BLANK_NORMAL: |
| 348 | intelfb_off(info, DRM_MODE_DPMS_STANDBY); |
| 349 | break; |
| 350 | case FB_BLANK_HSYNC_SUSPEND: |
| 351 | intelfb_off(info, DRM_MODE_DPMS_STANDBY); |
| 352 | break; |
| 353 | case FB_BLANK_VSYNC_SUSPEND: |
| 354 | intelfb_off(info, DRM_MODE_DPMS_SUSPEND); |
| 355 | break; |
| 356 | case FB_BLANK_POWERDOWN: |
| 357 | intelfb_off(info, DRM_MODE_DPMS_OFF); |
| 358 | break; |
| 359 | } |
| 360 | return 0; |
| 361 | } |
| 362 | |
| 363 | static struct fb_ops intelfb_ops = { |
| 364 | .owner = THIS_MODULE, |
| 365 | .fb_check_var = intelfb_check_var, |
| 366 | .fb_set_par = intelfb_set_par, |
| 367 | .fb_setcolreg = intelfb_setcolreg, |
| 368 | .fb_fillrect = cfb_fillrect, |
| 369 | .fb_copyarea = cfb_copyarea, |
| 370 | .fb_imageblit = cfb_imageblit, |
| 371 | .fb_pan_display = intelfb_pan_display, |
| 372 | .fb_blank = intelfb_blank, |
| 373 | }; |
| 374 | |
| 375 | /** |
| 376 | * Curretly it is assumed that the old framebuffer is reused. |
| 377 | * |
| 378 | * LOCKING |
| 379 | * caller should hold the mode config lock. |
| 380 | * |
| 381 | */ |
| 382 | int intelfb_resize(struct drm_device *dev, struct drm_crtc *crtc) |
| 383 | { |
| 384 | struct fb_info *info; |
| 385 | struct drm_framebuffer *fb; |
| 386 | struct drm_display_mode *mode = crtc->desired_mode; |
| 387 | |
| 388 | fb = crtc->fb; |
| 389 | if (!fb) |
| 390 | return 1; |
| 391 | |
| 392 | info = fb->fbdev; |
| 393 | if (!info) |
| 394 | return 1; |
| 395 | |
| 396 | if (!mode) |
| 397 | return 1; |
| 398 | |
| 399 | info->var.xres = mode->hdisplay; |
| 400 | info->var.right_margin = mode->hsync_start - mode->hdisplay; |
| 401 | info->var.hsync_len = mode->hsync_end - mode->hsync_start; |
| 402 | info->var.left_margin = mode->htotal - mode->hsync_end; |
| 403 | info->var.yres = mode->vdisplay; |
| 404 | info->var.lower_margin = mode->vsync_start - mode->vdisplay; |
| 405 | info->var.vsync_len = mode->vsync_end - mode->vsync_start; |
| 406 | info->var.upper_margin = mode->vtotal - mode->vsync_end; |
| 407 | info->var.pixclock = 10000000 / mode->htotal * 1000 / mode->vtotal * 100; |
| 408 | /* avoid overflow */ |
| 409 | info->var.pixclock = info->var.pixclock * 1000 / mode->vrefresh; |
| 410 | |
| 411 | return 0; |
| 412 | } |
| 413 | EXPORT_SYMBOL(intelfb_resize); |
| 414 | |
| 415 | static struct drm_mode_set kernelfb_mode; |
| 416 | |
| 417 | int intelfb_panic(struct notifier_block *n, unsigned long ununsed, |
| 418 | void *panic_str) |
| 419 | { |
| 420 | DRM_ERROR("panic occurred, switching back to text console\n"); |
| 421 | |
| 422 | intelfb_restore(); |
| 423 | return 0; |
| 424 | } |
| 425 | EXPORT_SYMBOL(intelfb_panic); |
| 426 | |
| 427 | static struct notifier_block paniced = { |
| 428 | .notifier_call = intelfb_panic, |
| 429 | }; |
| 430 | |
| 431 | int intelfb_create(struct drm_device *dev, uint32_t fb_width, |
| 432 | uint32_t fb_height, uint32_t surface_width, |
| 433 | uint32_t surface_height, |
| 434 | struct intel_framebuffer **intel_fb_p) |
| 435 | { |
| 436 | struct fb_info *info; |
| 437 | struct intelfb_par *par; |
| 438 | struct drm_framebuffer *fb; |
| 439 | struct intel_framebuffer *intel_fb; |
| 440 | struct drm_mode_fb_cmd mode_cmd; |
| 441 | struct drm_gem_object *fbo = NULL; |
| 442 | struct drm_i915_gem_object *obj_priv; |
| 443 | struct device *device = &dev->pdev->dev; |
| 444 | int size, ret, mmio_bar = IS_I9XX(dev) ? 0 : 1; |
| 445 | |
| 446 | mode_cmd.width = surface_width; |
| 447 | mode_cmd.height = surface_height; |
| 448 | |
| 449 | mode_cmd.bpp = 32; |
| 450 | mode_cmd.pitch = mode_cmd.width * ((mode_cmd.bpp + 1) / 8); |
| 451 | mode_cmd.depth = 24; |
| 452 | |
| 453 | size = mode_cmd.pitch * mode_cmd.height; |
| 454 | size = ALIGN(size, PAGE_SIZE); |
| 455 | fbo = drm_gem_object_alloc(dev, size); |
| 456 | if (!fbo) { |
| 457 | printk(KERN_ERR "failed to allocate framebuffer\n"); |
| 458 | ret = -ENOMEM; |
| 459 | goto out; |
| 460 | } |
| 461 | obj_priv = fbo->driver_private; |
| 462 | |
| 463 | mutex_lock(&dev->struct_mutex); |
| 464 | |
| 465 | ret = i915_gem_object_pin(fbo, PAGE_SIZE); |
| 466 | if (ret) { |
| 467 | DRM_ERROR("failed to pin fb: %d\n", ret); |
| 468 | goto out_unref; |
| 469 | } |
| 470 | |
| 471 | /* Flush everything out, we'll be doing GTT only from now on */ |
| 472 | i915_gem_object_set_to_gtt_domain(fbo, 1); |
| 473 | |
| 474 | ret = intel_framebuffer_create(dev, &mode_cmd, &fb, fbo); |
| 475 | if (ret) { |
| 476 | DRM_ERROR("failed to allocate fb.\n"); |
| 477 | goto out_unref; |
| 478 | } |
| 479 | |
| 480 | list_add(&fb->filp_head, &dev->mode_config.fb_kernel_list); |
| 481 | |
| 482 | intel_fb = to_intel_framebuffer(fb); |
| 483 | *intel_fb_p = intel_fb; |
| 484 | |
| 485 | info = framebuffer_alloc(sizeof(struct intelfb_par), device); |
| 486 | if (!info) { |
| 487 | ret = -ENOMEM; |
| 488 | goto out_unref; |
| 489 | } |
| 490 | |
| 491 | par = info->par; |
| 492 | |
| 493 | strcpy(info->fix.id, "inteldrmfb"); |
| 494 | info->fix.type = FB_TYPE_PACKED_PIXELS; |
| 495 | info->fix.visual = FB_VISUAL_TRUECOLOR; |
| 496 | info->fix.type_aux = 0; |
| 497 | info->fix.xpanstep = 1; /* doing it in hw */ |
| 498 | info->fix.ypanstep = 1; /* doing it in hw */ |
| 499 | info->fix.ywrapstep = 0; |
| 500 | info->fix.accel = FB_ACCEL_I830; |
| 501 | info->fix.type_aux = 0; |
| 502 | |
| 503 | info->flags = FBINFO_DEFAULT; |
| 504 | |
| 505 | info->fbops = &intelfb_ops; |
| 506 | |
| 507 | info->fix.line_length = fb->pitch; |
| 508 | info->fix.smem_start = dev->mode_config.fb_base + obj_priv->gtt_offset; |
| 509 | info->fix.smem_len = size; |
| 510 | |
| 511 | info->flags = FBINFO_DEFAULT; |
| 512 | |
| 513 | info->screen_base = ioremap_wc(dev->agp->base + obj_priv->gtt_offset, |
| 514 | size); |
| 515 | if (!info->screen_base) { |
| 516 | ret = -ENOSPC; |
| 517 | goto out_unref; |
| 518 | } |
| 519 | info->screen_size = size; |
| 520 | |
| 521 | // memset(info->screen_base, 0, size); |
| 522 | |
| 523 | info->pseudo_palette = fb->pseudo_palette; |
| 524 | info->var.xres_virtual = fb->width; |
| 525 | info->var.yres_virtual = fb->height; |
| 526 | info->var.bits_per_pixel = fb->bits_per_pixel; |
| 527 | info->var.xoffset = 0; |
| 528 | info->var.yoffset = 0; |
| 529 | info->var.activate = FB_ACTIVATE_NOW; |
| 530 | info->var.height = -1; |
| 531 | info->var.width = -1; |
| 532 | |
| 533 | info->var.xres = fb_width; |
| 534 | info->var.yres = fb_height; |
| 535 | |
| 536 | /* FIXME: we really shouldn't expose mmio space at all */ |
| 537 | info->fix.mmio_start = pci_resource_start(dev->pdev, mmio_bar); |
| 538 | info->fix.mmio_len = pci_resource_len(dev->pdev, mmio_bar); |
| 539 | |
| 540 | info->pixmap.size = 64*1024; |
| 541 | info->pixmap.buf_align = 8; |
| 542 | info->pixmap.access_align = 32; |
| 543 | info->pixmap.flags = FB_PIXMAP_SYSTEM; |
| 544 | info->pixmap.scan_align = 1; |
| 545 | |
| 546 | switch(fb->depth) { |
| 547 | case 8: |
| 548 | info->var.red.offset = 0; |
| 549 | info->var.green.offset = 0; |
| 550 | info->var.blue.offset = 0; |
| 551 | info->var.red.length = 8; /* 8bit DAC */ |
| 552 | info->var.green.length = 8; |
| 553 | info->var.blue.length = 8; |
| 554 | info->var.transp.offset = 0; |
| 555 | info->var.transp.length = 0; |
| 556 | break; |
| 557 | case 15: |
| 558 | info->var.red.offset = 10; |
| 559 | info->var.green.offset = 5; |
| 560 | info->var.blue.offset = 0; |
| 561 | info->var.red.length = 5; |
| 562 | info->var.green.length = 5; |
| 563 | info->var.blue.length = 5; |
| 564 | info->var.transp.offset = 15; |
| 565 | info->var.transp.length = 1; |
| 566 | break; |
| 567 | case 16: |
| 568 | info->var.red.offset = 11; |
| 569 | info->var.green.offset = 5; |
| 570 | info->var.blue.offset = 0; |
| 571 | info->var.red.length = 5; |
| 572 | info->var.green.length = 6; |
| 573 | info->var.blue.length = 5; |
| 574 | info->var.transp.offset = 0; |
| 575 | break; |
| 576 | case 24: |
| 577 | info->var.red.offset = 16; |
| 578 | info->var.green.offset = 8; |
| 579 | info->var.blue.offset = 0; |
| 580 | info->var.red.length = 8; |
| 581 | info->var.green.length = 8; |
| 582 | info->var.blue.length = 8; |
| 583 | info->var.transp.offset = 0; |
| 584 | info->var.transp.length = 0; |
| 585 | break; |
| 586 | case 32: |
| 587 | info->var.red.offset = 16; |
| 588 | info->var.green.offset = 8; |
| 589 | info->var.blue.offset = 0; |
| 590 | info->var.red.length = 8; |
| 591 | info->var.green.length = 8; |
| 592 | info->var.blue.length = 8; |
| 593 | info->var.transp.offset = 24; |
| 594 | info->var.transp.length = 8; |
| 595 | break; |
| 596 | default: |
| 597 | break; |
| 598 | } |
| 599 | |
| 600 | fb->fbdev = info; |
| 601 | |
| 602 | par->intel_fb = intel_fb; |
| 603 | par->dev = dev; |
| 604 | |
| 605 | /* To allow resizeing without swapping buffers */ |
| 606 | printk("allocated %dx%d fb: 0x%08x, bo %p\n", intel_fb->base.width, |
| 607 | intel_fb->base.height, obj_priv->gtt_offset, fbo); |
| 608 | |
| 609 | mutex_unlock(&dev->struct_mutex); |
| 610 | return 0; |
| 611 | |
| 612 | out_unref: |
| 613 | drm_gem_object_unreference(fbo); |
| 614 | mutex_unlock(&dev->struct_mutex); |
| 615 | out: |
| 616 | return ret; |
| 617 | } |
| 618 | |
| 619 | static int intelfb_multi_fb_probe_crtc(struct drm_device *dev, struct drm_crtc *crtc) |
| 620 | { |
| 621 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); |
| 622 | struct intel_framebuffer *intel_fb; |
| 623 | struct drm_framebuffer *fb; |
| 624 | struct drm_connector *connector; |
| 625 | struct fb_info *info; |
| 626 | struct intelfb_par *par; |
| 627 | struct drm_mode_set *modeset; |
| 628 | unsigned int width, height; |
| 629 | int new_fb = 0; |
| 630 | int ret, i, conn_count; |
| 631 | |
| 632 | if (!drm_helper_crtc_in_use(crtc)) |
| 633 | return 0; |
| 634 | |
| 635 | if (!crtc->desired_mode) |
| 636 | return 0; |
| 637 | |
| 638 | width = crtc->desired_mode->hdisplay; |
| 639 | height = crtc->desired_mode->vdisplay; |
| 640 | |
| 641 | /* is there an fb bound to this crtc already */ |
| 642 | if (!intel_crtc->mode_set.fb) { |
| 643 | ret = intelfb_create(dev, width, height, width, height, &intel_fb); |
| 644 | if (ret) |
| 645 | return -EINVAL; |
| 646 | new_fb = 1; |
| 647 | } else { |
| 648 | fb = intel_crtc->mode_set.fb; |
| 649 | intel_fb = to_intel_framebuffer(fb); |
| 650 | if ((intel_fb->base.width < width) || (intel_fb->base.height < height)) |
| 651 | return -EINVAL; |
| 652 | } |
| 653 | |
| 654 | info = intel_fb->base.fbdev; |
| 655 | par = info->par; |
| 656 | |
| 657 | modeset = &intel_crtc->mode_set; |
| 658 | modeset->fb = &intel_fb->base; |
| 659 | conn_count = 0; |
| 660 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
| 661 | if (connector->encoder) |
| 662 | if (connector->encoder->crtc == modeset->crtc) { |
| 663 | modeset->connectors[conn_count] = connector; |
| 664 | conn_count++; |
| 665 | if (conn_count > INTELFB_CONN_LIMIT) |
| 666 | BUG(); |
| 667 | } |
| 668 | } |
| 669 | |
| 670 | for (i = conn_count; i < INTELFB_CONN_LIMIT; i++) |
| 671 | modeset->connectors[i] = NULL; |
| 672 | |
| 673 | par->crtc_ids[0] = crtc->base.id; |
| 674 | |
| 675 | modeset->num_connectors = conn_count; |
| 676 | if (modeset->mode != modeset->crtc->desired_mode) |
| 677 | modeset->mode = modeset->crtc->desired_mode; |
| 678 | |
| 679 | par->crtc_count = 1; |
| 680 | |
| 681 | if (new_fb) { |
| 682 | info->var.pixclock = -1; |
| 683 | if (register_framebuffer(info) < 0) |
| 684 | return -EINVAL; |
| 685 | } else |
| 686 | intelfb_set_par(info); |
| 687 | |
| 688 | printk(KERN_INFO "fb%d: %s frame buffer device\n", info->node, |
| 689 | info->fix.id); |
| 690 | |
| 691 | /* Switch back to kernel console on panic */ |
| 692 | kernelfb_mode = *modeset; |
| 693 | atomic_notifier_chain_register(&panic_notifier_list, &paniced); |
| 694 | printk(KERN_INFO "registered panic notifier\n"); |
| 695 | |
| 696 | return 0; |
| 697 | } |
| 698 | |
| 699 | static int intelfb_multi_fb_probe(struct drm_device *dev) |
| 700 | { |
| 701 | |
| 702 | struct drm_crtc *crtc; |
| 703 | int ret = 0; |
| 704 | |
| 705 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
| 706 | ret = intelfb_multi_fb_probe_crtc(dev, crtc); |
| 707 | if (ret) |
| 708 | return ret; |
| 709 | } |
| 710 | return ret; |
| 711 | } |
| 712 | |
| 713 | static int intelfb_single_fb_probe(struct drm_device *dev) |
| 714 | { |
| 715 | struct drm_crtc *crtc; |
| 716 | struct drm_connector *connector; |
| 717 | unsigned int fb_width = (unsigned)-1, fb_height = (unsigned)-1; |
| 718 | unsigned int surface_width = 0, surface_height = 0; |
| 719 | int new_fb = 0; |
| 720 | int crtc_count = 0; |
| 721 | int ret, i, conn_count = 0; |
| 722 | struct intel_framebuffer *intel_fb; |
| 723 | struct fb_info *info; |
| 724 | struct intelfb_par *par; |
| 725 | struct drm_mode_set *modeset = NULL; |
| 726 | |
| 727 | DRM_DEBUG("\n"); |
| 728 | |
| 729 | /* Get a count of crtcs now in use and new min/maxes width/heights */ |
| 730 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
| 731 | if (!drm_helper_crtc_in_use(crtc)) |
| 732 | continue; |
| 733 | |
| 734 | crtc_count++; |
| 735 | if (!crtc->desired_mode) |
| 736 | continue; |
| 737 | |
| 738 | /* Smallest mode determines console size... */ |
| 739 | if (crtc->desired_mode->hdisplay < fb_width) |
| 740 | fb_width = crtc->desired_mode->hdisplay; |
| 741 | |
| 742 | if (crtc->desired_mode->vdisplay < fb_height) |
| 743 | fb_height = crtc->desired_mode->vdisplay; |
| 744 | |
| 745 | /* ... but largest for memory allocation dimensions */ |
| 746 | if (crtc->desired_mode->hdisplay > surface_width) |
| 747 | surface_width = crtc->desired_mode->hdisplay; |
| 748 | |
| 749 | if (crtc->desired_mode->vdisplay > surface_height) |
| 750 | surface_height = crtc->desired_mode->vdisplay; |
| 751 | } |
| 752 | |
| 753 | if (crtc_count == 0 || fb_width == -1 || fb_height == -1) { |
| 754 | /* hmm everyone went away - assume VGA cable just fell out |
| 755 | and will come back later. */ |
| 756 | DRM_DEBUG("no CRTCs available?\n"); |
| 757 | return 0; |
| 758 | } |
| 759 | |
| 760 | //fail |
| 761 | /* Find the fb for our new config */ |
| 762 | if (list_empty(&dev->mode_config.fb_kernel_list)) { |
| 763 | DRM_DEBUG("creating new fb (console size %dx%d, " |
| 764 | "buffer size %dx%d)\n", fb_width, fb_height, |
| 765 | surface_width, surface_height); |
| 766 | ret = intelfb_create(dev, fb_width, fb_height, surface_width, |
| 767 | surface_height, &intel_fb); |
| 768 | if (ret) |
| 769 | return -EINVAL; |
| 770 | new_fb = 1; |
| 771 | } else { |
| 772 | struct drm_framebuffer *fb; |
| 773 | |
| 774 | fb = list_first_entry(&dev->mode_config.fb_kernel_list, |
| 775 | struct drm_framebuffer, filp_head); |
| 776 | intel_fb = to_intel_framebuffer(fb); |
| 777 | |
| 778 | /* if someone hotplugs something bigger than we have already |
| 779 | * allocated, we are pwned. As really we can't resize an |
| 780 | * fbdev that is in the wild currently due to fbdev not really |
| 781 | * being designed for the lower layers moving stuff around |
| 782 | * under it. |
| 783 | * - so in the grand style of things - punt. |
| 784 | */ |
| 785 | if ((fb->width < surface_width) || |
| 786 | (fb->height < surface_height)) { |
| 787 | DRM_ERROR("fb not large enough for console\n"); |
| 788 | return -EINVAL; |
| 789 | } |
| 790 | } |
| 791 | // fail |
| 792 | |
| 793 | info = intel_fb->base.fbdev; |
| 794 | par = info->par; |
| 795 | |
| 796 | crtc_count = 0; |
| 797 | /* |
| 798 | * For each CRTC, set up the connector list for the CRTC's mode |
| 799 | * set configuration. |
| 800 | */ |
| 801 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
| 802 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); |
| 803 | |
| 804 | modeset = &intel_crtc->mode_set; |
| 805 | modeset->fb = &intel_fb->base; |
| 806 | conn_count = 0; |
| 807 | list_for_each_entry(connector, &dev->mode_config.connector_list, |
| 808 | head) { |
| 809 | if (!connector->encoder) |
| 810 | continue; |
| 811 | |
| 812 | if(connector->encoder->crtc == modeset->crtc) { |
| 813 | modeset->connectors[conn_count++] = connector; |
| 814 | if (conn_count > INTELFB_CONN_LIMIT) |
| 815 | BUG(); |
| 816 | } |
| 817 | } |
| 818 | |
| 819 | /* Zero out remaining connector pointers */ |
| 820 | for (i = conn_count; i < INTELFB_CONN_LIMIT; i++) |
| 821 | modeset->connectors[i] = NULL; |
| 822 | |
| 823 | par->crtc_ids[crtc_count++] = crtc->base.id; |
| 824 | |
| 825 | modeset->num_connectors = conn_count; |
| 826 | if (modeset->mode != modeset->crtc->desired_mode) |
| 827 | modeset->mode = modeset->crtc->desired_mode; |
| 828 | } |
| 829 | par->crtc_count = crtc_count; |
| 830 | |
| 831 | if (new_fb) { |
| 832 | info->var.pixclock = -1; |
| 833 | if (register_framebuffer(info) < 0) |
| 834 | return -EINVAL; |
| 835 | } else |
| 836 | intelfb_set_par(info); |
| 837 | |
| 838 | printk(KERN_INFO "fb%d: %s frame buffer device\n", info->node, |
| 839 | info->fix.id); |
| 840 | |
| 841 | /* Switch back to kernel console on panic */ |
| 842 | kernelfb_mode = *modeset; |
| 843 | atomic_notifier_chain_register(&panic_notifier_list, &paniced); |
| 844 | printk(KERN_INFO "registered panic notifier\n"); |
| 845 | |
| 846 | return 0; |
| 847 | } |
| 848 | |
| 849 | /** |
| 850 | * intelfb_restore - restore the framebuffer console (kernel) config |
| 851 | * |
| 852 | * Restore's the kernel's fbcon mode, used for lastclose & panic paths. |
| 853 | */ |
| 854 | void intelfb_restore(void) |
| 855 | { |
| 856 | drm_crtc_helper_set_config(&kernelfb_mode); |
| 857 | } |
| 858 | |
| 859 | static void intelfb_sysrq(int dummy1, struct tty_struct *dummy3) |
| 860 | { |
| 861 | intelfb_restore(); |
| 862 | } |
| 863 | |
| 864 | static struct sysrq_key_op sysrq_intelfb_restore_op = { |
| 865 | .handler = intelfb_sysrq, |
| 866 | .help_msg = "force fb", |
| 867 | .action_msg = "force restore of fb console", |
| 868 | }; |
| 869 | |
| 870 | int intelfb_probe(struct drm_device *dev) |
| 871 | { |
| 872 | int ret; |
| 873 | |
| 874 | DRM_DEBUG("\n"); |
| 875 | |
| 876 | /* something has changed in the lower levels of hell - deal with it |
| 877 | here */ |
| 878 | |
| 879 | /* two modes : a) 1 fb to rule all crtcs. |
| 880 | b) one fb per crtc. |
| 881 | two actions 1) new connected device |
| 882 | 2) device removed. |
| 883 | case a/1 : if the fb surface isn't big enough - resize the surface fb. |
| 884 | if the fb size isn't big enough - resize fb into surface. |
| 885 | if everything big enough configure the new crtc/etc. |
| 886 | case a/2 : undo the configuration |
| 887 | possibly resize down the fb to fit the new configuration. |
| 888 | case b/1 : see if it is on a new crtc - setup a new fb and add it. |
| 889 | case b/2 : teardown the new fb. |
| 890 | */ |
| 891 | |
| 892 | /* mode a first */ |
| 893 | /* search for an fb */ |
| 894 | if (i915_fbpercrtc == 1) { |
| 895 | ret = intelfb_multi_fb_probe(dev); |
| 896 | } else { |
| 897 | ret = intelfb_single_fb_probe(dev); |
| 898 | } |
| 899 | |
| 900 | register_sysrq_key('g', &sysrq_intelfb_restore_op); |
| 901 | |
| 902 | return ret; |
| 903 | } |
| 904 | EXPORT_SYMBOL(intelfb_probe); |
| 905 | |
| 906 | int intelfb_remove(struct drm_device *dev, struct drm_framebuffer *fb) |
| 907 | { |
| 908 | struct fb_info *info; |
| 909 | |
| 910 | if (!fb) |
| 911 | return -EINVAL; |
| 912 | |
| 913 | info = fb->fbdev; |
| 914 | |
| 915 | if (info) { |
| 916 | unregister_framebuffer(info); |
| 917 | iounmap(info->screen_base); |
| 918 | framebuffer_release(info); |
| 919 | } |
| 920 | |
| 921 | atomic_notifier_chain_unregister(&panic_notifier_list, &paniced); |
| 922 | memset(&kernelfb_mode, 0, sizeof(struct drm_mode_set)); |
| 923 | return 0; |
| 924 | } |
| 925 | EXPORT_SYMBOL(intelfb_remove); |
| 926 | MODULE_LICENSE("GPL and additional rights"); |