1 /*- 2 * Copyright (c) 2016 Michal Meloun 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 #include <sys/cdefs.h> 28 #include <sys/param.h> 29 #include <sys/systm.h> 30 #include <sys/bus.h> 31 #include <sys/kernel.h> 32 #include <sys/malloc.h> 33 34 #include <machine/bus.h> 35 36 #include <dev/extres/clk/clk.h> 37 #include <dev/drm2/drmP.h> 38 #include <dev/drm2/drm_crtc_helper.h> 39 #include <dev/drm2/drm_fb_helper.h> 40 41 #include <arm/nvidia/drm2/tegra_drm.h> 42 43 static void 44 fb_destroy(struct drm_framebuffer *drm_fb) 45 { 46 struct tegra_fb *fb; 47 struct tegra_bo *bo; 48 unsigned int i; 49 50 fb = container_of(drm_fb, struct tegra_fb, drm_fb); 51 for (i = 0; i < fb->nplanes; i++) { 52 bo = fb->planes[i]; 53 if (bo != NULL) 54 drm_gem_object_unreference_unlocked(&bo->gem_obj); 55 } 56 57 drm_framebuffer_cleanup(drm_fb); 58 free(fb->planes, DRM_MEM_DRIVER); 59 } 60 61 static int 62 fb_create_handle(struct drm_framebuffer *drm_fb, struct drm_file *file, 63 unsigned int *handle) 64 { 65 struct tegra_fb *fb; 66 int rv; 67 68 fb = container_of(drm_fb, struct tegra_fb, drm_fb); 69 rv = drm_gem_handle_create(file, &fb->planes[0]->gem_obj, handle); 70 return (rv); 71 } 72 73 /* XXX Probably not needed */ 74 static int 75 fb_dirty(struct drm_framebuffer *fb, struct drm_file *file_priv, 76 unsigned flags, unsigned color, struct drm_clip_rect *clips, unsigned num_clips) 77 { 78 79 return (0); 80 } 81 82 static const struct drm_framebuffer_funcs fb_funcs = { 83 .destroy = fb_destroy, 84 .create_handle = fb_create_handle, 85 .dirty = fb_dirty, 86 }; 87 88 static int 89 fb_alloc(struct drm_device *drm, struct drm_mode_fb_cmd2 *mode_cmd, 90 struct tegra_bo **planes, int num_planes, struct tegra_fb **res_fb) 91 { 92 struct tegra_fb *fb; 93 int i; 94 int rv; 95 96 fb = malloc(sizeof(*fb), DRM_MEM_DRIVER, M_WAITOK | M_ZERO); 97 fb->planes = malloc(num_planes * sizeof(*fb->planes), DRM_MEM_DRIVER, 98 M_WAITOK | M_ZERO); 99 fb->nplanes = num_planes; 100 101 drm_helper_mode_fill_fb_struct(&fb->drm_fb, mode_cmd); 102 for (i = 0; i < fb->nplanes; i++) 103 fb->planes[i] = planes[i]; 104 rv = drm_framebuffer_init(drm, &fb->drm_fb, &fb_funcs); 105 if (rv < 0) { 106 device_printf(drm->dev, 107 "Cannot initialize frame buffer %d\n", rv); 108 free(fb->planes, DRM_MEM_DRIVER); 109 return (rv); 110 } 111 *res_fb = fb; 112 return (0); 113 } 114 115 static int 116 tegra_fb_probe(struct drm_fb_helper *helper, 117 struct drm_fb_helper_surface_size *sizes) 118 { 119 u_int bpp, size; 120 struct tegra_drm *drm; 121 struct tegra_fb *fb; 122 struct fb_info *info; 123 struct tegra_bo *bo; 124 struct drm_mode_fb_cmd2 mode_cmd; 125 struct drm_device *drm_dev; 126 int rv; 127 128 if (helper->fb != NULL) 129 return (0); 130 131 DRM_DEBUG_KMS("surface: %d x %d (bpp: %d)\n", sizes->surface_width, 132 sizes->surface_height, sizes->surface_bpp); 133 134 drm_dev = helper->dev; 135 fb = container_of(helper, struct tegra_fb, fb_helper); 136 drm = container_of(drm_dev, struct tegra_drm, drm_dev); 137 bpp = (sizes->surface_bpp + 7) / 8; 138 139 /* Create mode_cmd */ 140 memset(&mode_cmd, 0, sizeof(mode_cmd)); 141 mode_cmd.width = sizes->surface_width; 142 mode_cmd.height = sizes->surface_height; 143 mode_cmd.pitches[0] = roundup(sizes->surface_width * bpp, 144 drm->pitch_align); 145 mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp, 146 sizes->surface_depth); 147 size = mode_cmd.pitches[0] * mode_cmd.height; 148 149 DRM_LOCK(drm_dev); 150 rv = tegra_bo_create(drm_dev, size, &bo); 151 DRM_UNLOCK(drm_dev); 152 if (rv != 0) 153 return (rv); 154 155 info = framebuffer_alloc(); 156 if (info == NULL) { 157 device_printf(drm_dev->dev, 158 "Cannot allocate DRM framebuffer info.\n"); 159 rv = -ENOMEM; 160 goto err_object; 161 } 162 163 rv = fb_alloc(drm_dev, &mode_cmd, &bo, 1, &fb); 164 if (rv != 0) { 165 device_printf(drm_dev->dev, 166 "Cannot allocate DRM framebuffer.\n"); 167 goto err_fb; 168 } 169 helper->fb = &fb->drm_fb; 170 helper->fbdev = info; 171 172 /* Fill FB info */ 173 info->fb_vbase = bo->vbase; 174 info->fb_pbase = bo->pbase; 175 info->fb_size = size; 176 info->fb_bpp = sizes->surface_bpp; 177 drm_fb_helper_fill_fix(info, fb->drm_fb.pitches[0], fb->drm_fb.depth); 178 drm_fb_helper_fill_var(info, helper, fb->drm_fb.width, 179 fb->drm_fb.height); 180 181 DRM_DEBUG_KMS("allocated %dx%d (s %dbits) fb size: %d, bo %p\n", 182 fb->drm_fb.width, fb->drm_fb.height, fb->drm_fb.depth, 183 size, bo); 184 return (1); 185 err_fb: 186 drm_gem_object_unreference_unlocked(&bo->gem_obj); 187 framebuffer_release(info); 188 err_object: 189 drm_gem_object_release(&bo->gem_obj); 190 return (rv); 191 } 192 193 static struct drm_fb_helper_funcs fb_helper_funcs = { 194 .fb_probe = tegra_fb_probe, 195 }; 196 197 /* 198 * Exported functions 199 */ 200 struct fb_info * 201 tegra_drm_fb_getinfo(struct drm_device *drm_dev) 202 { 203 struct tegra_fb *fb; 204 struct tegra_drm *drm; 205 206 drm = container_of(drm_dev, struct tegra_drm, drm_dev); 207 fb = drm->fb; 208 if (fb == NULL) 209 return (NULL); 210 return (fb->fb_helper.fbdev); 211 } 212 213 struct tegra_bo * 214 tegra_fb_get_plane(struct tegra_fb *fb, int idx) 215 { 216 217 if (idx >= drm_format_num_planes(fb->drm_fb.pixel_format)) 218 return (NULL); 219 if (idx >= fb->nplanes) 220 return (NULL); 221 return (fb->planes[idx]); 222 } 223 224 int 225 tegra_drm_fb_init(struct drm_device *drm_dev) 226 { 227 struct tegra_fb *fb; 228 struct tegra_drm *drm; 229 int rv; 230 231 drm = drm_dev->dev_private; 232 drm = container_of(drm_dev, struct tegra_drm, drm_dev); 233 fb = malloc(sizeof(*fb), DRM_MEM_DRIVER, M_WAITOK | M_ZERO); 234 drm->fb = fb; 235 236 fb->fb_helper.funcs = &fb_helper_funcs; 237 rv = drm_fb_helper_init(drm_dev, &fb->fb_helper, 238 drm_dev->mode_config.num_crtc, drm_dev->mode_config.num_connector); 239 if (rv != 0) { 240 device_printf(drm_dev->dev, 241 "Cannot initialize frame buffer %d\n", rv); 242 return (rv); 243 } 244 245 rv = drm_fb_helper_single_add_all_connectors(&fb->fb_helper); 246 if (rv != 0) { 247 device_printf(drm_dev->dev, "Cannot add all connectors: %d\n", 248 rv); 249 goto err_fini; 250 } 251 252 rv = drm_fb_helper_initial_config(&fb->fb_helper, 32); 253 if (rv != 0) { 254 device_printf(drm_dev->dev, 255 "Cannot set initial config: %d\n", rv); 256 goto err_fini; 257 } 258 /* XXXX Setup initial mode for FB */ 259 /* drm_fb_helper_set_par(fb->fb_helper.fbdev); */ 260 return 0; 261 262 err_fini: 263 drm_fb_helper_fini(&fb->fb_helper); 264 return (rv); 265 } 266 267 int 268 tegra_drm_fb_create(struct drm_device *drm, struct drm_file *file, 269 struct drm_mode_fb_cmd2 *cmd, struct drm_framebuffer **fb_res) 270 { 271 int hsub, vsub, i; 272 int width, height, size, bpp; 273 struct tegra_bo *planes[4]; 274 struct drm_gem_object *gem_obj; 275 struct tegra_fb *fb; 276 int rv, nplanes; 277 278 hsub = drm_format_horz_chroma_subsampling(cmd->pixel_format); 279 vsub = drm_format_vert_chroma_subsampling(cmd->pixel_format); 280 281 nplanes = drm_format_num_planes(cmd->pixel_format); 282 for (i = 0; i < nplanes; i++) { 283 width = cmd->width; 284 height = cmd->height; 285 if (i != 0) { 286 width /= hsub; 287 height /= vsub; 288 } 289 gem_obj = drm_gem_object_lookup(drm, file, cmd->handles[i]); 290 if (gem_obj == NULL) { 291 rv = -ENXIO; 292 goto fail; 293 } 294 295 bpp = drm_format_plane_cpp(cmd->pixel_format, i); 296 size = (height - 1) * cmd->pitches[i] + 297 width * bpp + cmd->offsets[i]; 298 if (gem_obj->size < size) { 299 rv = -EINVAL; 300 goto fail; 301 } 302 planes[i] = container_of(gem_obj, struct tegra_bo, gem_obj); 303 } 304 305 rv = fb_alloc(drm, cmd, planes, nplanes, &fb); 306 if (rv != 0) 307 goto fail; 308 309 *fb_res = &fb->drm_fb; 310 return (0); 311 312 fail: 313 while (i--) 314 drm_gem_object_unreference_unlocked(&planes[i]->gem_obj); 315 return (rv); 316 } 317 318 void 319 tegra_drm_fb_destroy(struct drm_device *drm_dev) 320 { 321 struct fb_info *info; 322 struct tegra_fb *fb; 323 struct tegra_drm *drm; 324 325 drm = container_of(drm_dev, struct tegra_drm, drm_dev); 326 fb = drm->fb; 327 if (fb == NULL) 328 return; 329 info = fb->fb_helper.fbdev; 330 drm_framebuffer_remove(&fb->drm_fb); 331 framebuffer_release(info); 332 drm_fb_helper_fini(&fb->fb_helper); 333 drm_framebuffer_cleanup(&fb->drm_fb); 334 free(fb, DRM_MEM_DRIVER); 335 drm->fb = NULL; 336 } 337