1 1.10 chs /* $NetBSD: intel_fbdev.c,v 1.10 2021/12/20 20:34:58 chs Exp $ */ 2 1.1 riastrad 3 1.1 riastrad /* 4 1.1 riastrad * Copyright 2007 David Airlie 5 1.1 riastrad * 6 1.1 riastrad * Permission is hereby granted, free of charge, to any person obtaining a 7 1.1 riastrad * copy of this software and associated documentation files (the "Software"), 8 1.1 riastrad * to deal in the Software without restriction, including without limitation 9 1.1 riastrad * the rights to use, copy, modify, merge, publish, distribute, sublicense, 10 1.1 riastrad * and/or sell copies of the Software, and to permit persons to whom the 11 1.1 riastrad * Software is furnished to do so, subject to the following conditions: 12 1.1 riastrad * 13 1.1 riastrad * The above copyright notice and this permission notice (including the next 14 1.1 riastrad * paragraph) shall be included in all copies or substantial portions of the 15 1.1 riastrad * Software. 16 1.1 riastrad * 17 1.1 riastrad * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 18 1.1 riastrad * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19 1.1 riastrad * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 20 1.1 riastrad * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 21 1.1 riastrad * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 22 1.1 riastrad * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 23 1.1 riastrad * DEALINGS IN THE SOFTWARE. 24 1.1 riastrad * 25 1.1 riastrad * Authors: 26 1.1 riastrad * David Airlie 27 1.1 riastrad */ 28 1.1 riastrad 29 1.1 riastrad #include <sys/cdefs.h> 30 1.10 chs __KERNEL_RCSID(0, "$NetBSD: intel_fbdev.c,v 1.10 2021/12/20 20:34:58 chs Exp $"); 31 1.1 riastrad 32 1.1 riastrad #include <linux/async.h> 33 1.1 riastrad #include <linux/console.h> 34 1.1 riastrad #include <linux/delay.h> 35 1.1 riastrad #include <linux/errno.h> 36 1.1 riastrad #include <linux/init.h> 37 1.1 riastrad #include <linux/kernel.h> 38 1.1 riastrad #include <linux/mm.h> 39 1.1 riastrad #include <linux/module.h> 40 1.1 riastrad #include <linux/string.h> 41 1.1 riastrad #include <linux/sysrq.h> 42 1.1 riastrad #include <linux/tty.h> 43 1.1 riastrad #include <linux/vga_switcheroo.h> 44 1.1 riastrad 45 1.1 riastrad #include <drm/drm_crtc.h> 46 1.1 riastrad #include <drm/drm_fb_helper.h> 47 1.1 riastrad #include <drm/drm_fourcc.h> 48 1.1 riastrad #include <drm/i915_drm.h> 49 1.1 riastrad 50 1.1 riastrad #include "i915_drv.h" 51 1.1 riastrad #include "intel_display_types.h" 52 1.1 riastrad #include "intel_fbdev.h" 53 1.1 riastrad #include "intel_frontbuffer.h" 54 1.1 riastrad 55 1.1 riastrad static struct intel_frontbuffer *to_frontbuffer(struct intel_fbdev *ifbdev) 56 1.1 riastrad { 57 1.1 riastrad return ifbdev->fb->frontbuffer; 58 1.1 riastrad } 59 1.1 riastrad 60 1.1 riastrad static void intel_fbdev_invalidate(struct intel_fbdev *ifbdev) 61 1.1 riastrad { 62 1.1 riastrad intel_frontbuffer_invalidate(to_frontbuffer(ifbdev), ORIGIN_CPU); 63 1.1 riastrad } 64 1.1 riastrad 65 1.2 riastrad #ifdef __NetBSD__ 66 1.2 riastrad #include "intelfb.h" 67 1.2 riastrad #include <linux/nbsd-namespace.h> 68 1.2 riastrad #endif 69 1.2 riastrad 70 1.2 riastrad #ifndef __NetBSD__ 71 1.1 riastrad static int intel_fbdev_set_par(struct fb_info *info) 72 1.1 riastrad { 73 1.1 riastrad struct drm_fb_helper *fb_helper = info->par; 74 1.1 riastrad struct intel_fbdev *ifbdev = 75 1.1 riastrad container_of(fb_helper, struct intel_fbdev, helper); 76 1.1 riastrad int ret; 77 1.1 riastrad 78 1.1 riastrad ret = drm_fb_helper_set_par(info); 79 1.1 riastrad if (ret == 0) 80 1.1 riastrad intel_fbdev_invalidate(ifbdev); 81 1.1 riastrad 82 1.1 riastrad return ret; 83 1.1 riastrad } 84 1.1 riastrad 85 1.1 riastrad static int intel_fbdev_blank(int blank, struct fb_info *info) 86 1.1 riastrad { 87 1.1 riastrad struct drm_fb_helper *fb_helper = info->par; 88 1.1 riastrad struct intel_fbdev *ifbdev = 89 1.1 riastrad container_of(fb_helper, struct intel_fbdev, helper); 90 1.1 riastrad int ret; 91 1.1 riastrad 92 1.1 riastrad ret = drm_fb_helper_blank(blank, info); 93 1.1 riastrad if (ret == 0) 94 1.1 riastrad intel_fbdev_invalidate(ifbdev); 95 1.1 riastrad 96 1.1 riastrad return ret; 97 1.1 riastrad } 98 1.1 riastrad 99 1.1 riastrad static int intel_fbdev_pan_display(struct fb_var_screeninfo *var, 100 1.1 riastrad struct fb_info *info) 101 1.1 riastrad { 102 1.1 riastrad struct drm_fb_helper *fb_helper = info->par; 103 1.1 riastrad struct intel_fbdev *ifbdev = 104 1.1 riastrad container_of(fb_helper, struct intel_fbdev, helper); 105 1.1 riastrad int ret; 106 1.1 riastrad 107 1.1 riastrad ret = drm_fb_helper_pan_display(var, info); 108 1.1 riastrad if (ret == 0) 109 1.1 riastrad intel_fbdev_invalidate(ifbdev); 110 1.1 riastrad 111 1.1 riastrad return ret; 112 1.1 riastrad } 113 1.1 riastrad 114 1.1 riastrad static const struct fb_ops intelfb_ops = { 115 1.1 riastrad .owner = THIS_MODULE, 116 1.1 riastrad DRM_FB_HELPER_DEFAULT_OPS, 117 1.1 riastrad .fb_set_par = intel_fbdev_set_par, 118 1.1 riastrad .fb_fillrect = drm_fb_helper_cfb_fillrect, 119 1.1 riastrad .fb_copyarea = drm_fb_helper_cfb_copyarea, 120 1.1 riastrad .fb_imageblit = drm_fb_helper_cfb_imageblit, 121 1.1 riastrad .fb_pan_display = intel_fbdev_pan_display, 122 1.1 riastrad .fb_blank = intel_fbdev_blank, 123 1.1 riastrad }; 124 1.2 riastrad #endif 125 1.1 riastrad 126 1.1 riastrad static int intelfb_alloc(struct drm_fb_helper *helper, 127 1.1 riastrad struct drm_fb_helper_surface_size *sizes) 128 1.1 riastrad { 129 1.1 riastrad struct intel_fbdev *ifbdev = 130 1.1 riastrad container_of(helper, struct intel_fbdev, helper); 131 1.1 riastrad struct drm_framebuffer *fb; 132 1.1 riastrad struct drm_device *dev = helper->dev; 133 1.1 riastrad struct drm_i915_private *dev_priv = to_i915(dev); 134 1.1 riastrad struct drm_mode_fb_cmd2 mode_cmd = {}; 135 1.1 riastrad struct drm_i915_gem_object *obj; 136 1.1 riastrad int size; 137 1.1 riastrad 138 1.1 riastrad /* we don't do packed 24bpp */ 139 1.1 riastrad if (sizes->surface_bpp == 24) 140 1.1 riastrad sizes->surface_bpp = 32; 141 1.1 riastrad 142 1.1 riastrad mode_cmd.width = sizes->surface_width; 143 1.1 riastrad mode_cmd.height = sizes->surface_height; 144 1.1 riastrad 145 1.1 riastrad mode_cmd.pitches[0] = ALIGN(mode_cmd.width * 146 1.1 riastrad DIV_ROUND_UP(sizes->surface_bpp, 8), 64); 147 1.1 riastrad mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp, 148 1.1 riastrad sizes->surface_depth); 149 1.1 riastrad 150 1.1 riastrad size = mode_cmd.pitches[0] * mode_cmd.height; 151 1.1 riastrad size = PAGE_ALIGN(size); 152 1.1 riastrad 153 1.1 riastrad /* If the FB is too big, just don't use it since fbdev is not very 154 1.1 riastrad * important and we should probably use that space with FBC or other 155 1.1 riastrad * features. */ 156 1.1 riastrad obj = ERR_PTR(-ENODEV); 157 1.1 riastrad if (size * 2 < dev_priv->stolen_usable_size) 158 1.1 riastrad obj = i915_gem_object_create_stolen(dev_priv, size); 159 1.1 riastrad if (IS_ERR(obj)) 160 1.1 riastrad obj = i915_gem_object_create_shmem(dev_priv, size); 161 1.1 riastrad if (IS_ERR(obj)) { 162 1.1 riastrad DRM_ERROR("failed to allocate framebuffer\n"); 163 1.1 riastrad return PTR_ERR(obj); 164 1.1 riastrad } 165 1.1 riastrad 166 1.1 riastrad fb = intel_framebuffer_create(obj, &mode_cmd); 167 1.1 riastrad i915_gem_object_put(obj); 168 1.1 riastrad if (IS_ERR(fb)) 169 1.1 riastrad return PTR_ERR(fb); 170 1.1 riastrad 171 1.1 riastrad ifbdev->fb = to_intel_framebuffer(fb); 172 1.1 riastrad return 0; 173 1.1 riastrad } 174 1.1 riastrad 175 1.4 riastrad #ifdef __NetBSD__ 176 1.4 riastrad # define __iomem __i915_vma_iomem 177 1.4 riastrad #endif 178 1.4 riastrad 179 1.1 riastrad static int intelfb_create(struct drm_fb_helper *helper, 180 1.1 riastrad struct drm_fb_helper_surface_size *sizes) 181 1.1 riastrad { 182 1.1 riastrad struct intel_fbdev *ifbdev = 183 1.1 riastrad container_of(helper, struct intel_fbdev, helper); 184 1.1 riastrad struct intel_framebuffer *intel_fb = ifbdev->fb; 185 1.1 riastrad struct drm_device *dev = helper->dev; 186 1.1 riastrad struct drm_i915_private *dev_priv = to_i915(dev); 187 1.1 riastrad struct pci_dev *pdev = dev_priv->drm.pdev; 188 1.1 riastrad struct i915_ggtt *ggtt = &dev_priv->ggtt; 189 1.1 riastrad const struct i915_ggtt_view view = { 190 1.1 riastrad .type = I915_GGTT_VIEW_NORMAL, 191 1.1 riastrad }; 192 1.1 riastrad intel_wakeref_t wakeref; 193 1.2 riastrad #ifndef __NetBSD__ 194 1.1 riastrad struct fb_info *info; 195 1.2 riastrad #endif 196 1.1 riastrad struct i915_vma *vma; 197 1.1 riastrad unsigned long flags = 0; 198 1.1 riastrad bool prealloc = false; 199 1.1 riastrad void __iomem *vaddr; 200 1.1 riastrad int ret; 201 1.1 riastrad 202 1.1 riastrad if (intel_fb && 203 1.1 riastrad (sizes->fb_width > intel_fb->base.width || 204 1.1 riastrad sizes->fb_height > intel_fb->base.height)) { 205 1.1 riastrad DRM_DEBUG_KMS("BIOS fb too small (%dx%d), we require (%dx%d)," 206 1.1 riastrad " releasing it\n", 207 1.1 riastrad intel_fb->base.width, intel_fb->base.height, 208 1.1 riastrad sizes->fb_width, sizes->fb_height); 209 1.1 riastrad drm_framebuffer_put(&intel_fb->base); 210 1.1 riastrad intel_fb = ifbdev->fb = NULL; 211 1.1 riastrad } 212 1.1 riastrad if (!intel_fb || WARN_ON(!intel_fb_obj(&intel_fb->base))) { 213 1.1 riastrad DRM_DEBUG_KMS("no BIOS fb, allocating a new one\n"); 214 1.1 riastrad ret = intelfb_alloc(helper, sizes); 215 1.1 riastrad if (ret) 216 1.1 riastrad return ret; 217 1.1 riastrad intel_fb = ifbdev->fb; 218 1.1 riastrad } else { 219 1.1 riastrad DRM_DEBUG_KMS("re-using BIOS fb\n"); 220 1.1 riastrad prealloc = true; 221 1.1 riastrad sizes->fb_width = intel_fb->base.width; 222 1.1 riastrad sizes->fb_height = intel_fb->base.height; 223 1.1 riastrad } 224 1.1 riastrad 225 1.1 riastrad wakeref = intel_runtime_pm_get(&dev_priv->runtime_pm); 226 1.1 riastrad 227 1.1 riastrad /* Pin the GGTT vma for our access via info->screen_base. 228 1.1 riastrad * This also validates that any existing fb inherited from the 229 1.1 riastrad * BIOS is suitable for own access. 230 1.1 riastrad */ 231 1.1 riastrad vma = intel_pin_and_fence_fb_obj(&ifbdev->fb->base, 232 1.1 riastrad &view, false, &flags); 233 1.1 riastrad if (IS_ERR(vma)) { 234 1.1 riastrad ret = PTR_ERR(vma); 235 1.1 riastrad goto out_unlock; 236 1.1 riastrad } 237 1.1 riastrad 238 1.1 riastrad intel_frontbuffer_flush(to_frontbuffer(ifbdev), ORIGIN_DIRTYFB); 239 1.1 riastrad 240 1.2 riastrad #ifdef __NetBSD__ 241 1.2 riastrad { 242 1.2 riastrad static const struct intelfb_attach_args zero_ifa; 243 1.2 riastrad struct intelfb_attach_args ifa = zero_ifa; 244 1.2 riastrad 245 1.4 riastrad __USE(ggtt); 246 1.4 riastrad __USE(pdev); 247 1.4 riastrad 248 1.4 riastrad vaddr = i915_vma_pin_iomap(vma); 249 1.4 riastrad if (IS_ERR(vaddr)) { 250 1.4 riastrad DRM_ERROR("Failed to remap framebuffer into virtual memory\n"); 251 1.4 riastrad ret = PTR_ERR(vaddr); 252 1.4 riastrad goto out_unpin; 253 1.4 riastrad } 254 1.4 riastrad 255 1.4 riastrad if (vma->obj->stolen && !prealloc) 256 1.4 riastrad memset_io(vaddr, 0, vma->node.size); 257 1.4 riastrad 258 1.2 riastrad ifa.ifa_drm_dev = dev; 259 1.2 riastrad ifa.ifa_fb_helper = helper; 260 1.2 riastrad ifa.ifa_fb_sizes = *sizes; 261 1.4 riastrad ifa.ifa_fb_vaddr = vaddr; 262 1.2 riastrad 263 1.2 riastrad /* 264 1.2 riastrad * XXX Should do this asynchronously, since we hold 265 1.2 riastrad * dev->struct_mutex. 266 1.2 riastrad */ 267 1.10 chs KERNEL_LOCK(1, NULL); 268 1.2 riastrad helper->fbdev = config_found(dev->dev, &ifa, NULL, 269 1.2 riastrad CFARGS(.iattr = "intelfbbus")); 270 1.10 chs KERNEL_UNLOCK_ONE(NULL); 271 1.2 riastrad if (helper->fbdev == NULL) { 272 1.2 riastrad DRM_ERROR("unable to attach intelfb\n"); 273 1.2 riastrad ret = -ENXIO; 274 1.2 riastrad goto out_unpin; 275 1.2 riastrad } 276 1.4 riastrad ifbdev->helper.fb = &ifbdev->fb->base; 277 1.2 riastrad } 278 1.2 riastrad #else 279 1.1 riastrad info = drm_fb_helper_alloc_fbi(helper); 280 1.1 riastrad if (IS_ERR(info)) { 281 1.1 riastrad DRM_ERROR("Failed to allocate fb_info\n"); 282 1.1 riastrad ret = PTR_ERR(info); 283 1.1 riastrad goto out_unpin; 284 1.1 riastrad } 285 1.1 riastrad 286 1.1 riastrad ifbdev->helper.fb = &ifbdev->fb->base; 287 1.1 riastrad 288 1.1 riastrad info->fbops = &intelfb_ops; 289 1.1 riastrad 290 1.1 riastrad /* setup aperture base/size for vesafb takeover */ 291 1.1 riastrad info->apertures->ranges[0].base = ggtt->gmadr.start; 292 1.1 riastrad info->apertures->ranges[0].size = ggtt->mappable_end; 293 1.1 riastrad 294 1.1 riastrad /* Our framebuffer is the entirety of fbdev's system memory */ 295 1.1 riastrad info->fix.smem_start = 296 1.1 riastrad (unsigned long)(ggtt->gmadr.start + vma->node.start); 297 1.1 riastrad info->fix.smem_len = vma->node.size; 298 1.1 riastrad 299 1.1 riastrad vaddr = i915_vma_pin_iomap(vma); 300 1.1 riastrad if (IS_ERR(vaddr)) { 301 1.1 riastrad DRM_ERROR("Failed to remap framebuffer into virtual memory\n"); 302 1.1 riastrad ret = PTR_ERR(vaddr); 303 1.1 riastrad goto out_unpin; 304 1.1 riastrad } 305 1.1 riastrad info->screen_base = vaddr; 306 1.1 riastrad info->screen_size = vma->node.size; 307 1.1 riastrad 308 1.1 riastrad drm_fb_helper_fill_info(info, &ifbdev->helper, sizes); 309 1.1 riastrad 310 1.1 riastrad /* If the object is shmemfs backed, it will have given us zeroed pages. 311 1.1 riastrad * If the object is stolen however, it will be full of whatever 312 1.1 riastrad * garbage was left in there. 313 1.1 riastrad */ 314 1.1 riastrad if (vma->obj->stolen && !prealloc) 315 1.1 riastrad memset_io(info->screen_base, 0, info->screen_size); 316 1.2 riastrad #endif 317 1.1 riastrad 318 1.1 riastrad /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */ 319 1.1 riastrad 320 1.5 riastrad DRM_DEBUG_KMS("allocated %dx%d fb: 0x%08"PRIx32"\n", 321 1.1 riastrad ifbdev->fb->base.width, ifbdev->fb->base.height, 322 1.1 riastrad i915_ggtt_offset(vma)); 323 1.1 riastrad ifbdev->vma = vma; 324 1.1 riastrad ifbdev->vma_flags = flags; 325 1.1 riastrad 326 1.1 riastrad intel_runtime_pm_put(&dev_priv->runtime_pm, wakeref); 327 1.2 riastrad #ifndef __NetBSD__ 328 1.1 riastrad vga_switcheroo_client_fb_set(pdev, info); 329 1.2 riastrad #endif 330 1.1 riastrad return 0; 331 1.1 riastrad 332 1.1 riastrad out_unpin: 333 1.1 riastrad intel_unpin_fb_vma(vma, flags); 334 1.1 riastrad out_unlock: 335 1.1 riastrad intel_runtime_pm_put(&dev_priv->runtime_pm, wakeref); 336 1.1 riastrad return ret; 337 1.1 riastrad } 338 1.6 riastrad 339 1.4 riastrad #ifdef __NetBSD__ 340 1.4 riastrad # undef __iomem 341 1.4 riastrad #endif 342 1.1 riastrad 343 1.1 riastrad static const struct drm_fb_helper_funcs intel_fb_helper_funcs = { 344 1.1 riastrad .fb_probe = intelfb_create, 345 1.1 riastrad }; 346 1.1 riastrad 347 1.1 riastrad static void intel_fbdev_destroy(struct intel_fbdev *ifbdev) 348 1.1 riastrad { 349 1.1 riastrad /* We rely on the object-free to release the VMA pinning for 350 1.1 riastrad * the info->screen_base mmaping. Leaking the VMA is simpler than 351 1.1 riastrad * trying to rectify all the possible error paths leading here. 352 1.1 riastrad */ 353 1.1 riastrad 354 1.1 riastrad drm_fb_helper_fini(&ifbdev->helper); 355 1.1 riastrad 356 1.1 riastrad if (ifbdev->vma) 357 1.1 riastrad intel_unpin_fb_vma(ifbdev->vma, ifbdev->vma_flags); 358 1.1 riastrad 359 1.1 riastrad if (ifbdev->fb) 360 1.1 riastrad drm_framebuffer_remove(&ifbdev->fb->base); 361 1.1 riastrad 362 1.9 riastrad mutex_destroy(&ifbdev->hpd_lock); 363 1.9 riastrad 364 1.1 riastrad kfree(ifbdev); 365 1.1 riastrad } 366 1.1 riastrad 367 1.1 riastrad /* 368 1.1 riastrad * Build an intel_fbdev struct using a BIOS allocated framebuffer, if possible. 369 1.1 riastrad * The core display code will have read out the current plane configuration, 370 1.1 riastrad * so we use that to figure out if there's an object for us to use as the 371 1.1 riastrad * fb, and if so, we re-use it for the fbdev configuration. 372 1.1 riastrad * 373 1.1 riastrad * Note we only support a single fb shared across pipes for boot (mostly for 374 1.1 riastrad * fbcon), so we just find the biggest and use that. 375 1.1 riastrad */ 376 1.1 riastrad static bool intel_fbdev_init_bios(struct drm_device *dev, 377 1.1 riastrad struct intel_fbdev *ifbdev) 378 1.1 riastrad { 379 1.1 riastrad struct intel_framebuffer *fb = NULL; 380 1.1 riastrad struct drm_crtc *crtc; 381 1.1 riastrad struct intel_crtc *intel_crtc; 382 1.1 riastrad unsigned int max_size = 0; 383 1.1 riastrad 384 1.1 riastrad /* Find the largest fb */ 385 1.1 riastrad for_each_crtc(dev, crtc) { 386 1.1 riastrad struct drm_i915_gem_object *obj = 387 1.1 riastrad intel_fb_obj(crtc->primary->state->fb); 388 1.1 riastrad intel_crtc = to_intel_crtc(crtc); 389 1.1 riastrad 390 1.1 riastrad if (!crtc->state->active || !obj) { 391 1.1 riastrad DRM_DEBUG_KMS("pipe %c not active or no fb, skipping\n", 392 1.1 riastrad pipe_name(intel_crtc->pipe)); 393 1.1 riastrad continue; 394 1.1 riastrad } 395 1.1 riastrad 396 1.1 riastrad if (obj->base.size > max_size) { 397 1.1 riastrad DRM_DEBUG_KMS("found possible fb from plane %c\n", 398 1.1 riastrad pipe_name(intel_crtc->pipe)); 399 1.1 riastrad fb = to_intel_framebuffer(crtc->primary->state->fb); 400 1.1 riastrad max_size = obj->base.size; 401 1.1 riastrad } 402 1.1 riastrad } 403 1.1 riastrad 404 1.1 riastrad if (!fb) { 405 1.1 riastrad DRM_DEBUG_KMS("no active fbs found, not using BIOS config\n"); 406 1.1 riastrad goto out; 407 1.1 riastrad } 408 1.1 riastrad 409 1.1 riastrad /* Now make sure all the pipes will fit into it */ 410 1.1 riastrad for_each_crtc(dev, crtc) { 411 1.1 riastrad unsigned int cur_size; 412 1.1 riastrad 413 1.1 riastrad intel_crtc = to_intel_crtc(crtc); 414 1.1 riastrad 415 1.1 riastrad if (!crtc->state->active) { 416 1.1 riastrad DRM_DEBUG_KMS("pipe %c not active, skipping\n", 417 1.1 riastrad pipe_name(intel_crtc->pipe)); 418 1.1 riastrad continue; 419 1.1 riastrad } 420 1.1 riastrad 421 1.1 riastrad DRM_DEBUG_KMS("checking plane %c for BIOS fb\n", 422 1.1 riastrad pipe_name(intel_crtc->pipe)); 423 1.1 riastrad 424 1.1 riastrad /* 425 1.1 riastrad * See if the plane fb we found above will fit on this 426 1.1 riastrad * pipe. Note we need to use the selected fb's pitch and bpp 427 1.1 riastrad * rather than the current pipe's, since they differ. 428 1.1 riastrad */ 429 1.1 riastrad cur_size = crtc->state->adjusted_mode.crtc_hdisplay; 430 1.1 riastrad cur_size = cur_size * fb->base.format->cpp[0]; 431 1.1 riastrad if (fb->base.pitches[0] < cur_size) { 432 1.1 riastrad DRM_DEBUG_KMS("fb not wide enough for plane %c (%d vs %d)\n", 433 1.1 riastrad pipe_name(intel_crtc->pipe), 434 1.1 riastrad cur_size, fb->base.pitches[0]); 435 1.1 riastrad fb = NULL; 436 1.1 riastrad break; 437 1.1 riastrad } 438 1.1 riastrad 439 1.1 riastrad cur_size = crtc->state->adjusted_mode.crtc_vdisplay; 440 1.1 riastrad cur_size = intel_fb_align_height(&fb->base, 0, cur_size); 441 1.1 riastrad cur_size *= fb->base.pitches[0]; 442 1.1 riastrad DRM_DEBUG_KMS("pipe %c area: %dx%d, bpp: %d, size: %d\n", 443 1.1 riastrad pipe_name(intel_crtc->pipe), 444 1.1 riastrad crtc->state->adjusted_mode.crtc_hdisplay, 445 1.1 riastrad crtc->state->adjusted_mode.crtc_vdisplay, 446 1.1 riastrad fb->base.format->cpp[0] * 8, 447 1.1 riastrad cur_size); 448 1.1 riastrad 449 1.1 riastrad if (cur_size > max_size) { 450 1.1 riastrad DRM_DEBUG_KMS("fb not big enough for plane %c (%d vs %d)\n", 451 1.1 riastrad pipe_name(intel_crtc->pipe), 452 1.1 riastrad cur_size, max_size); 453 1.1 riastrad fb = NULL; 454 1.1 riastrad break; 455 1.1 riastrad } 456 1.1 riastrad 457 1.1 riastrad DRM_DEBUG_KMS("fb big enough for plane %c (%d >= %d)\n", 458 1.1 riastrad pipe_name(intel_crtc->pipe), 459 1.1 riastrad max_size, cur_size); 460 1.1 riastrad } 461 1.1 riastrad 462 1.1 riastrad if (!fb) { 463 1.1 riastrad DRM_DEBUG_KMS("BIOS fb not suitable for all pipes, not using\n"); 464 1.1 riastrad goto out; 465 1.1 riastrad } 466 1.1 riastrad 467 1.1 riastrad ifbdev->preferred_bpp = fb->base.format->cpp[0] * 8; 468 1.1 riastrad ifbdev->fb = fb; 469 1.1 riastrad 470 1.1 riastrad drm_framebuffer_get(&ifbdev->fb->base); 471 1.1 riastrad 472 1.1 riastrad /* Final pass to check if any active pipes don't have fbs */ 473 1.1 riastrad for_each_crtc(dev, crtc) { 474 1.1 riastrad intel_crtc = to_intel_crtc(crtc); 475 1.1 riastrad 476 1.1 riastrad if (!crtc->state->active) 477 1.1 riastrad continue; 478 1.1 riastrad 479 1.1 riastrad WARN(!crtc->primary->state->fb, 480 1.1 riastrad "re-used BIOS config but lost an fb on crtc %d\n", 481 1.1 riastrad crtc->base.id); 482 1.1 riastrad } 483 1.1 riastrad 484 1.1 riastrad 485 1.1 riastrad DRM_DEBUG_KMS("using BIOS fb for initial console\n"); 486 1.1 riastrad return true; 487 1.1 riastrad 488 1.1 riastrad out: 489 1.1 riastrad 490 1.1 riastrad return false; 491 1.1 riastrad } 492 1.1 riastrad 493 1.1 riastrad static void intel_fbdev_suspend_worker(struct work_struct *work) 494 1.1 riastrad { 495 1.2 riastrad #ifndef __NetBSD__ /* XXX fb suspend */ 496 1.1 riastrad intel_fbdev_set_suspend(&container_of(work, 497 1.1 riastrad struct drm_i915_private, 498 1.1 riastrad fbdev_suspend_work)->drm, 499 1.1 riastrad FBINFO_STATE_RUNNING, 500 1.1 riastrad true); 501 1.2 riastrad #endif 502 1.1 riastrad } 503 1.1 riastrad 504 1.1 riastrad int intel_fbdev_init(struct drm_device *dev) 505 1.1 riastrad { 506 1.1 riastrad struct drm_i915_private *dev_priv = to_i915(dev); 507 1.1 riastrad struct intel_fbdev *ifbdev; 508 1.1 riastrad int ret; 509 1.1 riastrad 510 1.1 riastrad if (WARN_ON(!HAS_DISPLAY(dev_priv) || !INTEL_DISPLAY_ENABLED(dev_priv))) 511 1.1 riastrad return -ENODEV; 512 1.1 riastrad 513 1.1 riastrad ifbdev = kzalloc(sizeof(struct intel_fbdev), GFP_KERNEL); 514 1.1 riastrad if (ifbdev == NULL) 515 1.1 riastrad return -ENOMEM; 516 1.1 riastrad 517 1.1 riastrad mutex_init(&ifbdev->hpd_lock); 518 1.1 riastrad drm_fb_helper_prepare(dev, &ifbdev->helper, &intel_fb_helper_funcs); 519 1.1 riastrad 520 1.1 riastrad if (!intel_fbdev_init_bios(dev, ifbdev)) 521 1.1 riastrad ifbdev->preferred_bpp = 32; 522 1.1 riastrad 523 1.1 riastrad ret = drm_fb_helper_init(dev, &ifbdev->helper, 4); 524 1.1 riastrad if (ret) { 525 1.1 riastrad kfree(ifbdev); 526 1.1 riastrad return ret; 527 1.1 riastrad } 528 1.1 riastrad 529 1.1 riastrad dev_priv->fbdev = ifbdev; 530 1.1 riastrad INIT_WORK(&dev_priv->fbdev_suspend_work, intel_fbdev_suspend_worker); 531 1.1 riastrad 532 1.1 riastrad drm_fb_helper_single_add_all_connectors(&ifbdev->helper); 533 1.1 riastrad 534 1.1 riastrad return 0; 535 1.1 riastrad } 536 1.1 riastrad 537 1.1 riastrad static void intel_fbdev_initial_config(void *data, async_cookie_t cookie) 538 1.1 riastrad { 539 1.1 riastrad struct intel_fbdev *ifbdev = data; 540 1.1 riastrad 541 1.1 riastrad /* Due to peculiar init order wrt to hpd handling this is separate. */ 542 1.1 riastrad if (drm_fb_helper_initial_config(&ifbdev->helper, 543 1.1 riastrad ifbdev->preferred_bpp)) 544 1.1 riastrad intel_fbdev_unregister(to_i915(ifbdev->helper.dev)); 545 1.1 riastrad } 546 1.1 riastrad 547 1.1 riastrad void intel_fbdev_initial_config_async(struct drm_device *dev) 548 1.1 riastrad { 549 1.1 riastrad struct intel_fbdev *ifbdev = to_i915(dev)->fbdev; 550 1.1 riastrad 551 1.1 riastrad if (!ifbdev) 552 1.1 riastrad return; 553 1.1 riastrad 554 1.1 riastrad ifbdev->cookie = async_schedule(intel_fbdev_initial_config, ifbdev); 555 1.1 riastrad } 556 1.1 riastrad 557 1.1 riastrad static void intel_fbdev_sync(struct intel_fbdev *ifbdev) 558 1.1 riastrad { 559 1.1 riastrad if (!ifbdev->cookie) 560 1.1 riastrad return; 561 1.1 riastrad 562 1.1 riastrad /* Only serialises with all preceding async calls, hence +1 */ 563 1.1 riastrad async_synchronize_cookie(ifbdev->cookie + 1); 564 1.1 riastrad ifbdev->cookie = 0; 565 1.1 riastrad } 566 1.1 riastrad 567 1.1 riastrad void intel_fbdev_unregister(struct drm_i915_private *dev_priv) 568 1.1 riastrad { 569 1.1 riastrad struct intel_fbdev *ifbdev = dev_priv->fbdev; 570 1.1 riastrad 571 1.1 riastrad if (!ifbdev) 572 1.1 riastrad return; 573 1.1 riastrad 574 1.1 riastrad cancel_work_sync(&dev_priv->fbdev_suspend_work); 575 1.7 riastrad #ifndef __NetBSD__ /* XXX fb async */ 576 1.1 riastrad if (!current_is_async()) 577 1.7 riastrad #endif 578 1.1 riastrad intel_fbdev_sync(ifbdev); 579 1.1 riastrad 580 1.1 riastrad drm_fb_helper_unregister_fbi(&ifbdev->helper); 581 1.1 riastrad } 582 1.1 riastrad 583 1.1 riastrad void intel_fbdev_fini(struct drm_i915_private *dev_priv) 584 1.1 riastrad { 585 1.1 riastrad struct intel_fbdev *ifbdev = fetch_and_zero(&dev_priv->fbdev); 586 1.1 riastrad 587 1.1 riastrad if (!ifbdev) 588 1.1 riastrad return; 589 1.1 riastrad 590 1.1 riastrad intel_fbdev_destroy(ifbdev); 591 1.1 riastrad } 592 1.1 riastrad 593 1.1 riastrad /* Suspends/resumes fbdev processing of incoming HPD events. When resuming HPD 594 1.1 riastrad * processing, fbdev will perform a full connector reprobe if a hotplug event 595 1.1 riastrad * was received while HPD was suspended. 596 1.1 riastrad */ 597 1.8 riastrad #ifndef __NetBSD__ /* XXX fb suspend */ 598 1.1 riastrad static void intel_fbdev_hpd_set_suspend(struct intel_fbdev *ifbdev, int state) 599 1.1 riastrad { 600 1.1 riastrad bool send_hpd = false; 601 1.1 riastrad 602 1.1 riastrad mutex_lock(&ifbdev->hpd_lock); 603 1.1 riastrad ifbdev->hpd_suspended = state == FBINFO_STATE_SUSPENDED; 604 1.1 riastrad send_hpd = !ifbdev->hpd_suspended && ifbdev->hpd_waiting; 605 1.1 riastrad ifbdev->hpd_waiting = false; 606 1.1 riastrad mutex_unlock(&ifbdev->hpd_lock); 607 1.1 riastrad 608 1.1 riastrad if (send_hpd) { 609 1.1 riastrad DRM_DEBUG_KMS("Handling delayed fbcon HPD event\n"); 610 1.1 riastrad drm_fb_helper_hotplug_event(&ifbdev->helper); 611 1.1 riastrad } 612 1.1 riastrad } 613 1.8 riastrad #endif /* __NetBSD__ */ 614 1.1 riastrad 615 1.1 riastrad void intel_fbdev_set_suspend(struct drm_device *dev, int state, bool synchronous) 616 1.1 riastrad { 617 1.2 riastrad #ifndef __NetBSD__ /* XXX fb suspend */ 618 1.1 riastrad struct drm_i915_private *dev_priv = to_i915(dev); 619 1.1 riastrad struct intel_fbdev *ifbdev = dev_priv->fbdev; 620 1.1 riastrad struct fb_info *info; 621 1.1 riastrad 622 1.1 riastrad if (!ifbdev || !ifbdev->vma) 623 1.1 riastrad return; 624 1.1 riastrad 625 1.1 riastrad info = ifbdev->helper.fbdev; 626 1.1 riastrad 627 1.1 riastrad if (synchronous) { 628 1.1 riastrad /* Flush any pending work to turn the console on, and then 629 1.1 riastrad * wait to turn it off. It must be synchronous as we are 630 1.1 riastrad * about to suspend or unload the driver. 631 1.1 riastrad * 632 1.1 riastrad * Note that from within the work-handler, we cannot flush 633 1.1 riastrad * ourselves, so only flush outstanding work upon suspend! 634 1.1 riastrad */ 635 1.1 riastrad if (state != FBINFO_STATE_RUNNING) 636 1.1 riastrad flush_work(&dev_priv->fbdev_suspend_work); 637 1.1 riastrad 638 1.1 riastrad console_lock(); 639 1.1 riastrad } else { 640 1.1 riastrad /* 641 1.1 riastrad * The console lock can be pretty contented on resume due 642 1.1 riastrad * to all the printk activity. Try to keep it out of the hot 643 1.1 riastrad * path of resume if possible. 644 1.1 riastrad */ 645 1.1 riastrad WARN_ON(state != FBINFO_STATE_RUNNING); 646 1.1 riastrad if (!console_trylock()) { 647 1.1 riastrad /* Don't block our own workqueue as this can 648 1.1 riastrad * be run in parallel with other i915.ko tasks. 649 1.1 riastrad */ 650 1.1 riastrad schedule_work(&dev_priv->fbdev_suspend_work); 651 1.1 riastrad return; 652 1.1 riastrad } 653 1.1 riastrad } 654 1.1 riastrad 655 1.1 riastrad /* On resume from hibernation: If the object is shmemfs backed, it has 656 1.1 riastrad * been restored from swap. If the object is stolen however, it will be 657 1.1 riastrad * full of whatever garbage was left in there. 658 1.1 riastrad */ 659 1.1 riastrad if (state == FBINFO_STATE_RUNNING && 660 1.1 riastrad intel_fb_obj(&ifbdev->fb->base)->stolen) 661 1.1 riastrad memset_io(info->screen_base, 0, info->screen_size); 662 1.1 riastrad 663 1.1 riastrad drm_fb_helper_set_suspend(&ifbdev->helper, state); 664 1.1 riastrad console_unlock(); 665 1.1 riastrad 666 1.1 riastrad intel_fbdev_hpd_set_suspend(ifbdev, state); 667 1.2 riastrad #endif 668 1.1 riastrad } 669 1.1 riastrad 670 1.1 riastrad void intel_fbdev_output_poll_changed(struct drm_device *dev) 671 1.1 riastrad { 672 1.1 riastrad struct intel_fbdev *ifbdev = to_i915(dev)->fbdev; 673 1.1 riastrad bool send_hpd; 674 1.1 riastrad 675 1.1 riastrad if (!ifbdev) 676 1.1 riastrad return; 677 1.1 riastrad 678 1.1 riastrad intel_fbdev_sync(ifbdev); 679 1.1 riastrad 680 1.1 riastrad mutex_lock(&ifbdev->hpd_lock); 681 1.1 riastrad send_hpd = !ifbdev->hpd_suspended; 682 1.1 riastrad ifbdev->hpd_waiting = true; 683 1.1 riastrad mutex_unlock(&ifbdev->hpd_lock); 684 1.1 riastrad 685 1.1 riastrad if (send_hpd && (ifbdev->vma || ifbdev->helper.deferred_setup)) 686 1.1 riastrad drm_fb_helper_hotplug_event(&ifbdev->helper); 687 1.1 riastrad } 688 1.1 riastrad 689 1.1 riastrad void intel_fbdev_restore_mode(struct drm_device *dev) 690 1.1 riastrad { 691 1.1 riastrad struct intel_fbdev *ifbdev = to_i915(dev)->fbdev; 692 1.1 riastrad 693 1.1 riastrad if (!ifbdev) 694 1.1 riastrad return; 695 1.1 riastrad 696 1.1 riastrad intel_fbdev_sync(ifbdev); 697 1.1 riastrad if (!ifbdev->vma) 698 1.1 riastrad return; 699 1.1 riastrad 700 1.1 riastrad if (drm_fb_helper_restore_fbdev_mode_unlocked(&ifbdev->helper) == 0) 701 1.1 riastrad intel_fbdev_invalidate(ifbdev); 702 1.1 riastrad } 703