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#include <linux/module.h> 27#include <linux/slab.h> 28#include <linux/fb.h> 29 30#include <drm/drmP.h> 31#include <drm/drm_crtc.h> 32#include <drm/drm_crtc_helper.h> 33#include <drm/radeon_drm.h> 34#include "radeon.h" 35 36#include <drm/drm_fb_helper.h> 37 38#include <linux/vga_switcheroo.h> 39 40/* object hierarchy - 41 this contains a helper + a radeon fb 42 the helper contains a pointer to radeon framebuffer baseclass. 43*/ 44struct radeon_fbdev { 45 struct drm_fb_helper helper; 46 struct radeon_framebuffer rfb; 47 struct list_head fbdev_list; 48 struct radeon_device *rdev; 49}; 50 51/** 52 * radeon_fb_helper_set_par - Hide cursor on CRTCs used by fbdev. 53 * 54 * @info: fbdev info 55 * 56 * This function hides the cursor on all CRTCs used by fbdev. 57 */ 58static int radeon_fb_helper_set_par(struct fb_info *info) 59{ 60 int ret; 61 62 ret = drm_fb_helper_set_par(info); 63 64 /* XXX: with universal plane support fbdev will automatically disable 65 * all non-primary planes (including the cursor) 66 */ 67 if (ret == 0) { 68 struct drm_fb_helper *fb_helper = info->par; 69 int i; 70 71 for (i = 0; i < fb_helper->crtc_count; i++) { 72 struct drm_crtc *crtc = fb_helper->crtc_info[i].mode_set.crtc; 73 74 radeon_crtc_cursor_set2(crtc, NULL, 0, 0, 0, 0, 0); 75 } 76 } 77 78 return ret; 79} 80 81static struct fb_ops radeonfb_ops = { 82 .owner = THIS_MODULE, 83 .fb_check_var = drm_fb_helper_check_var, 84 .fb_set_par = radeon_fb_helper_set_par, 85 .fb_fillrect = cfb_fillrect, 86 .fb_copyarea = cfb_copyarea, 87 .fb_imageblit = cfb_imageblit, 88 .fb_pan_display = drm_fb_helper_pan_display, 89 .fb_blank = drm_fb_helper_blank, 90 .fb_setcmap = drm_fb_helper_setcmap, 91 .fb_debug_enter = drm_fb_helper_debug_enter, 92 .fb_debug_leave = drm_fb_helper_debug_leave, 93}; 94 95 96int radeon_align_pitch(struct radeon_device *rdev, int width, int bpp, bool tiled) 97{ 98 int aligned = width; 99 int align_large = (ASIC_IS_AVIVO(rdev)) || tiled; 100 int pitch_mask = 0; 101 102 switch (bpp / 8) { 103 case 1: 104 pitch_mask = align_large ? 255 : 127; 105 break; 106 case 2: 107 pitch_mask = align_large ? 127 : 31; 108 break; 109 case 3: 110 case 4: 111 pitch_mask = align_large ? 63 : 15; 112 break; 113 } 114 115 aligned += pitch_mask; 116 aligned &= ~pitch_mask; 117 return aligned; 118} 119 120static void radeonfb_destroy_pinned_object(struct drm_gem_object *gobj) 121{ 122 struct radeon_bo *rbo = gem_to_radeon_bo(gobj); 123 int ret; 124 125 ret = radeon_bo_reserve(rbo, false); 126 if (likely(ret == 0)) { 127 radeon_bo_kunmap(rbo); 128 radeon_bo_unpin(rbo); 129 radeon_bo_unreserve(rbo); 130 } 131 drm_gem_object_unreference_unlocked(gobj); 132} 133 134static int radeonfb_create_pinned_object(struct radeon_fbdev *rfbdev, 135 struct drm_mode_fb_cmd2 *mode_cmd, 136 struct drm_gem_object **gobj_p) 137{ 138 struct radeon_device *rdev = rfbdev->rdev; 139 struct drm_gem_object *gobj = NULL; 140 struct radeon_bo *rbo = NULL; 141 bool fb_tiled = false; /* useful for testing */ 142 u32 tiling_flags = 0; 143 int ret; 144 int aligned_size, size; 145 int height = mode_cmd->height; 146 u32 bpp, depth; 147 148 drm_fb_get_bpp_depth(mode_cmd->pixel_format, &depth, &bpp); 149 150 /* need to align pitch with crtc limits */ 151 mode_cmd->pitches[0] = radeon_align_pitch(rdev, mode_cmd->width, bpp, 152 fb_tiled) * ((bpp + 1) / 8); 153 154 if (rdev->family >= CHIP_R600) 155 height = ALIGN(mode_cmd->height, 8); 156 size = mode_cmd->pitches[0] * height; 157 aligned_size = ALIGN(size, PAGE_SIZE); 158 ret = radeon_gem_object_create(rdev, aligned_size, 0, 159 RADEON_GEM_DOMAIN_VRAM, 160 0, true, &gobj); 161 if (ret) { 162 printk(KERN_ERR "failed to allocate framebuffer (%d)\n", 163 aligned_size); 164 return -ENOMEM; 165 } 166 rbo = gem_to_radeon_bo(gobj); 167 168 if (fb_tiled) 169 tiling_flags = RADEON_TILING_MACRO; 170 171#ifdef __BIG_ENDIAN 172 switch (bpp) { 173 case 32: 174 tiling_flags |= RADEON_TILING_SWAP_32BIT; 175 break; 176 case 16: 177 tiling_flags |= RADEON_TILING_SWAP_16BIT; 178 default: 179 break; 180 } 181#endif 182 183 if (tiling_flags) { 184 ret = radeon_bo_set_tiling_flags(rbo, 185 tiling_flags | RADEON_TILING_SURFACE, 186 mode_cmd->pitches[0]); 187 if (ret) 188 dev_err(rdev->dev, "FB failed to set tiling flags\n"); 189 } 190 191 192 ret = radeon_bo_reserve(rbo, false); 193 if (unlikely(ret != 0)) 194 goto out_unref; 195 /* Only 27 bit offset for legacy CRTC */ 196 ret = radeon_bo_pin_restricted(rbo, RADEON_GEM_DOMAIN_VRAM, 197 ASIC_IS_AVIVO(rdev) ? 0 : 1 << 27, 198 NULL); 199 if (ret) { 200 radeon_bo_unreserve(rbo); 201 goto out_unref; 202 } 203 if (fb_tiled) 204 radeon_bo_check_tiling(rbo, 0, 0); 205 ret = radeon_bo_kmap(rbo, NULL); 206 radeon_bo_unreserve(rbo); 207 if (ret) { 208 goto out_unref; 209 } 210 211 *gobj_p = gobj; 212 return 0; 213out_unref: 214 radeonfb_destroy_pinned_object(gobj); 215 *gobj_p = NULL; 216 return ret; 217} 218 219static int radeonfb_create(struct drm_fb_helper *helper, 220 struct drm_fb_helper_surface_size *sizes) 221{ 222 struct radeon_fbdev *rfbdev = 223 container_of(helper, struct radeon_fbdev, helper); 224 struct radeon_device *rdev = rfbdev->rdev; 225 struct fb_info *info; 226 struct drm_framebuffer *fb = NULL; 227 struct drm_mode_fb_cmd2 mode_cmd; 228 struct drm_gem_object *gobj = NULL; 229 struct radeon_bo *rbo = NULL; 230 struct device *device = &rdev->pdev->dev; 231 int ret; 232 unsigned long tmp; 233 234 mode_cmd.width = sizes->surface_width; 235 mode_cmd.height = sizes->surface_height; 236 237 /* avivo can't scanout real 24bpp */ 238 if ((sizes->surface_bpp == 24) && ASIC_IS_AVIVO(rdev)) 239 sizes->surface_bpp = 32; 240 241 mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp, 242 sizes->surface_depth); 243 244 ret = radeonfb_create_pinned_object(rfbdev, &mode_cmd, &gobj); 245 if (ret) { 246 DRM_ERROR("failed to create fbcon object %d\n", ret); 247 return ret; 248 } 249 250 rbo = gem_to_radeon_bo(gobj); 251 252 /* okay we have an object now allocate the framebuffer */ 253 info = framebuffer_alloc(0, device); 254 if (info == NULL) { 255 ret = -ENOMEM; 256 goto out_unref; 257 } 258 259 info->par = rfbdev; 260 261 ret = radeon_framebuffer_init(rdev->ddev, &rfbdev->rfb, &mode_cmd, gobj); 262 if (ret) { 263 DRM_ERROR("failed to initialize framebuffer %d\n", ret); 264 goto out_unref; 265 } 266 267 fb = &rfbdev->rfb.base; 268 269 /* setup helper */ 270 rfbdev->helper.fb = fb; 271 rfbdev->helper.fbdev = info; 272 273 memset_io(rbo->kptr, 0x0, radeon_bo_size(rbo)); 274 275 strcpy(info->fix.id, "radeondrmfb"); 276 277 drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth); 278 279 info->flags = FBINFO_DEFAULT | FBINFO_CAN_FORCE_OUTPUT; 280 info->fbops = &radeonfb_ops; 281 282 tmp = radeon_bo_gpu_offset(rbo) - rdev->mc.vram_start; 283 info->fix.smem_start = rdev->mc.aper_base + tmp; 284 info->fix.smem_len = radeon_bo_size(rbo); 285 info->screen_base = rbo->kptr; 286 info->screen_size = radeon_bo_size(rbo); 287 288 drm_fb_helper_fill_var(info, &rfbdev->helper, sizes->fb_width, sizes->fb_height); 289 290 /* setup aperture base/size for vesafb takeover */ 291 info->apertures = alloc_apertures(1); 292 if (!info->apertures) { 293 ret = -ENOMEM; 294 goto out_unref; 295 } 296 info->apertures->ranges[0].base = rdev->ddev->mode_config.fb_base; 297 info->apertures->ranges[0].size = rdev->mc.aper_size; 298 299 /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */ 300 301 if (info->screen_base == NULL) { 302 ret = -ENOSPC; 303 goto out_unref; 304 } 305 306 ret = fb_alloc_cmap(&info->cmap, 256, 0); 307 if (ret) { 308 ret = -ENOMEM; 309 goto out_unref; 310 } 311 312 DRM_INFO("fb mappable at 0x%lX\n", info->fix.smem_start); 313 DRM_INFO("vram apper at 0x%lX\n", (unsigned long)rdev->mc.aper_base); 314 DRM_INFO("size %lu\n", (unsigned long)radeon_bo_size(rbo)); 315 DRM_INFO("fb depth is %d\n", fb->depth); 316 DRM_INFO(" pitch is %d\n", fb->pitches[0]); 317 318 vga_switcheroo_client_fb_set(rdev->ddev->pdev, info); 319 return 0; 320 321out_unref: 322 if (rbo) { 323 324 } 325 if (fb && ret) { 326 drm_gem_object_unreference(gobj); 327 drm_framebuffer_unregister_private(fb); 328 drm_framebuffer_cleanup(fb); 329 kfree(fb); 330 } 331 return ret; 332} 333 334void radeon_fb_output_poll_changed(struct radeon_device *rdev) 335{ 336 if (rdev->mode_info.rfbdev) 337 drm_fb_helper_hotplug_event(&rdev->mode_info.rfbdev->helper); 338} 339 340static int radeon_fbdev_destroy(struct drm_device *dev, struct radeon_fbdev *rfbdev) 341{ 342 struct fb_info *info; 343 struct radeon_framebuffer *rfb = &rfbdev->rfb; 344 345 if (rfbdev->helper.fbdev) { 346 info = rfbdev->helper.fbdev; 347 348 unregister_framebuffer(info); 349 if (info->cmap.len) 350 fb_dealloc_cmap(&info->cmap); 351 framebuffer_release(info); 352 } 353 354 if (rfb->obj) { 355 radeonfb_destroy_pinned_object(rfb->obj); 356 rfb->obj = NULL; 357 } 358 drm_fb_helper_fini(&rfbdev->helper); 359 drm_framebuffer_unregister_private(&rfb->base); 360 drm_framebuffer_cleanup(&rfb->base); 361 362 return 0; 363} 364 365static const struct drm_fb_helper_funcs radeon_fb_helper_funcs = { 366 .gamma_set = radeon_crtc_fb_gamma_set, 367 .gamma_get = radeon_crtc_fb_gamma_get, 368 .fb_probe = radeonfb_create, 369}; 370 371int radeon_fbdev_init(struct radeon_device *rdev) 372{ 373 struct radeon_fbdev *rfbdev; 374 int bpp_sel = 32; 375 int ret; 376 377 /* don't enable fbdev if no connectors */ 378 if (list_empty(&rdev->ddev->mode_config.connector_list)) 379 return 0; 380 381 /* select 8 bpp console on RN50 or 16MB cards */ 382 if (ASIC_IS_RN50(rdev) || rdev->mc.real_vram_size <= (32*1024*1024)) 383 bpp_sel = 8; 384 385 rfbdev = kzalloc(sizeof(struct radeon_fbdev), GFP_KERNEL); 386 if (!rfbdev) 387 return -ENOMEM; 388 389 rfbdev->rdev = rdev; 390 rdev->mode_info.rfbdev = rfbdev; 391 392 drm_fb_helper_prepare(rdev->ddev, &rfbdev->helper, 393 &radeon_fb_helper_funcs); 394 395 ret = drm_fb_helper_init(rdev->ddev, &rfbdev->helper, 396 rdev->num_crtc, 397 RADEONFB_CONN_LIMIT); 398 if (ret) 399 goto free; 400 401 ret = drm_fb_helper_single_add_all_connectors(&rfbdev->helper); 402 if (ret) 403 goto fini; 404 405 /* disable all the possible outputs/crtcs before entering KMS mode */ 406 drm_helper_disable_unused_functions(rdev->ddev); 407 408 ret = drm_fb_helper_initial_config(&rfbdev->helper, bpp_sel); 409 if (ret) 410 goto fini; 411 412 return 0; 413 414fini: 415 drm_fb_helper_fini(&rfbdev->helper); 416free: 417 kfree(rfbdev); 418 return ret; 419} 420 421void radeon_fbdev_fini(struct radeon_device *rdev) 422{ 423 if (!rdev->mode_info.rfbdev) 424 return; 425 426 radeon_fbdev_destroy(rdev->ddev, rdev->mode_info.rfbdev); 427 kfree(rdev->mode_info.rfbdev); 428 rdev->mode_info.rfbdev = NULL; 429} 430 431void radeon_fbdev_set_suspend(struct radeon_device *rdev, int state) 432{ 433 if (rdev->mode_info.rfbdev) 434 fb_set_suspend(rdev->mode_info.rfbdev->helper.fbdev, state); 435} 436 437bool radeon_fbdev_robj_is_fb(struct radeon_device *rdev, struct radeon_bo *robj) 438{ 439 if (!rdev->mode_info.rfbdev) 440 return false; 441 442 if (robj == gem_to_radeon_bo(rdev->mode_info.rfbdev->rfb.obj)) 443 return true; 444 return false; 445} 446 447void radeon_fb_add_connector(struct radeon_device *rdev, struct drm_connector *connector) 448{ 449 if (rdev->mode_info.rfbdev) 450 drm_fb_helper_add_one_connector(&rdev->mode_info.rfbdev->helper, connector); 451} 452 453void radeon_fb_remove_connector(struct radeon_device *rdev, struct drm_connector *connector) 454{ 455 if (rdev->mode_info.rfbdev) 456 drm_fb_helper_remove_one_connector(&rdev->mode_info.rfbdev->helper, connector); 457} 458