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