2 * Copyright © 2007 David Airlie
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:
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
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.
26 #include <linux/module.h>
27 #include <linux/slab.h>
33 #include "drm_crtc_helper.h"
34 #include "radeon_drm.h"
37 #include "drm_fb_helper.h"
39 #include <linux/vga_switcheroo.h>
42 this contains a helper + a radeon fb
43 the helper contains a pointer to radeon framebuffer baseclass.
46 struct drm_fb_helper helper;
47 struct radeon_framebuffer rfb;
48 struct list_head fbdev_list;
49 struct radeon_device *rdev;
52 static struct fb_ops radeonfb_ops = {
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 .fb_debug_enter = drm_fb_helper_debug_enter,
63 .fb_debug_leave = drm_fb_helper_debug_leave,
67 int radeon_align_pitch(struct radeon_device *rdev, int width, int bpp, bool tiled)
70 int align_large = (ASIC_IS_AVIVO(rdev)) || tiled;
75 pitch_mask = align_large ? 255 : 127;
78 pitch_mask = align_large ? 127 : 31;
82 pitch_mask = align_large ? 63 : 15;
86 aligned += pitch_mask;
87 aligned &= ~pitch_mask;
91 static void radeonfb_destroy_pinned_object(struct drm_gem_object *gobj)
93 struct radeon_bo *rbo = gem_to_radeon_bo(gobj);
96 ret = radeon_bo_reserve(rbo, false);
97 if (likely(ret == 0)) {
98 radeon_bo_kunmap(rbo);
100 radeon_bo_unreserve(rbo);
102 drm_gem_object_unreference_unlocked(gobj);
105 static int radeonfb_create_pinned_object(struct radeon_fbdev *rfbdev,
106 struct drm_mode_fb_cmd2 *mode_cmd,
107 struct drm_gem_object **gobj_p)
109 struct radeon_device *rdev = rfbdev->rdev;
110 struct drm_gem_object *gobj = NULL;
111 struct radeon_bo *rbo = NULL;
112 bool fb_tiled = false; /* useful for testing */
113 u32 tiling_flags = 0;
115 int aligned_size, size;
116 int height = mode_cmd->height;
119 drm_fb_get_bpp_depth(mode_cmd->pixel_format, &depth, &bpp);
121 /* need to align pitch with crtc limits */
122 mode_cmd->pitches[0] = radeon_align_pitch(rdev, mode_cmd->width, bpp,
123 fb_tiled) * ((bpp + 1) / 8);
125 if (rdev->family >= CHIP_R600)
126 height = ALIGN(mode_cmd->height, 8);
127 size = mode_cmd->pitches[0] * height;
128 aligned_size = ALIGN(size, PAGE_SIZE);
129 ret = radeon_gem_object_create(rdev, aligned_size, 0,
130 RADEON_GEM_DOMAIN_VRAM,
134 printk(KERN_ERR "failed to allocate framebuffer (%d)\n",
138 rbo = gem_to_radeon_bo(gobj);
141 tiling_flags = RADEON_TILING_MACRO;
146 tiling_flags |= RADEON_TILING_SWAP_32BIT;
149 tiling_flags |= RADEON_TILING_SWAP_16BIT;
156 ret = radeon_bo_set_tiling_flags(rbo,
157 tiling_flags | RADEON_TILING_SURFACE,
158 mode_cmd->pitches[0]);
160 dev_err(rdev->dev, "FB failed to set tiling flags\n");
164 ret = radeon_bo_reserve(rbo, false);
165 if (unlikely(ret != 0))
167 /* Only 27 bit offset for legacy CRTC */
168 ret = radeon_bo_pin_restricted(rbo, RADEON_GEM_DOMAIN_VRAM,
169 ASIC_IS_AVIVO(rdev) ? 0 : 1 << 27,
172 radeon_bo_unreserve(rbo);
176 radeon_bo_check_tiling(rbo, 0, 0);
177 ret = radeon_bo_kmap(rbo, NULL);
178 radeon_bo_unreserve(rbo);
186 radeonfb_destroy_pinned_object(gobj);
191 static int radeonfb_create(struct radeon_fbdev *rfbdev,
192 struct drm_fb_helper_surface_size *sizes)
194 struct radeon_device *rdev = rfbdev->rdev;
195 struct fb_info *info;
196 struct drm_framebuffer *fb = NULL;
197 struct drm_mode_fb_cmd2 mode_cmd;
198 struct drm_gem_object *gobj = NULL;
199 struct radeon_bo *rbo = NULL;
200 struct device *device = &rdev->pdev->dev;
204 mode_cmd.width = sizes->surface_width;
205 mode_cmd.height = sizes->surface_height;
207 /* avivo can't scanout real 24bpp */
208 if ((sizes->surface_bpp == 24) && ASIC_IS_AVIVO(rdev))
209 sizes->surface_bpp = 32;
211 mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
212 sizes->surface_depth);
214 ret = radeonfb_create_pinned_object(rfbdev, &mode_cmd, &gobj);
216 DRM_ERROR("failed to create fbcon object %d\n", ret);
220 rbo = gem_to_radeon_bo(gobj);
222 /* okay we have an object now allocate the framebuffer */
223 info = framebuffer_alloc(0, device);
231 ret = radeon_framebuffer_init(rdev->ddev, &rfbdev->rfb, &mode_cmd, gobj);
233 DRM_ERROR("failed to initalise framebuffer %d\n", ret);
237 fb = &rfbdev->rfb.base;
240 rfbdev->helper.fb = fb;
241 rfbdev->helper.fbdev = info;
243 memset_io(rbo->kptr, 0x0, radeon_bo_size(rbo));
245 strcpy(info->fix.id, "radeondrmfb");
247 drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth);
249 info->flags = FBINFO_DEFAULT | FBINFO_CAN_FORCE_OUTPUT;
250 info->fbops = &radeonfb_ops;
252 tmp = radeon_bo_gpu_offset(rbo) - rdev->mc.vram_start;
253 info->fix.smem_start = rdev->mc.aper_base + tmp;
254 info->fix.smem_len = radeon_bo_size(rbo);
255 info->screen_base = rbo->kptr;
256 info->screen_size = radeon_bo_size(rbo);
258 drm_fb_helper_fill_var(info, &rfbdev->helper, sizes->fb_width, sizes->fb_height);
260 /* setup aperture base/size for vesafb takeover */
261 info->apertures = alloc_apertures(1);
262 if (!info->apertures) {
266 info->apertures->ranges[0].base = rdev->ddev->mode_config.fb_base;
267 info->apertures->ranges[0].size = rdev->mc.aper_size;
269 /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
271 if (info->screen_base == NULL) {
276 ret = fb_alloc_cmap(&info->cmap, 256, 0);
282 DRM_INFO("fb mappable at 0x%lX\n", info->fix.smem_start);
283 DRM_INFO("vram apper at 0x%lX\n", (unsigned long)rdev->mc.aper_base);
284 DRM_INFO("size %lu\n", (unsigned long)radeon_bo_size(rbo));
285 DRM_INFO("fb depth is %d\n", fb->depth);
286 DRM_INFO(" pitch is %d\n", fb->pitches[0]);
288 vga_switcheroo_client_fb_set(rdev->ddev->pdev, info);
296 drm_gem_object_unreference(gobj);
297 drm_framebuffer_cleanup(fb);
303 static int radeon_fb_find_or_create_single(struct drm_fb_helper *helper,
304 struct drm_fb_helper_surface_size *sizes)
306 struct radeon_fbdev *rfbdev = (struct radeon_fbdev *)helper;
311 ret = radeonfb_create(rfbdev, sizes);
319 static char *mode_option;
320 int radeon_parse_options(char *options)
324 if (!options || !*options)
327 while ((this_opt = strsep(&options, ",")) != NULL) {
330 mode_option = this_opt;
335 void radeon_fb_output_poll_changed(struct radeon_device *rdev)
337 drm_fb_helper_hotplug_event(&rdev->mode_info.rfbdev->helper);
340 static int radeon_fbdev_destroy(struct drm_device *dev, struct radeon_fbdev *rfbdev)
342 struct fb_info *info;
343 struct radeon_framebuffer *rfb = &rfbdev->rfb;
345 if (rfbdev->helper.fbdev) {
346 info = rfbdev->helper.fbdev;
348 unregister_framebuffer(info);
350 fb_dealloc_cmap(&info->cmap);
351 framebuffer_release(info);
355 radeonfb_destroy_pinned_object(rfb->obj);
358 drm_fb_helper_fini(&rfbdev->helper);
359 drm_framebuffer_cleanup(&rfb->base);
364 static struct drm_fb_helper_funcs radeon_fb_helper_funcs = {
365 .gamma_set = radeon_crtc_fb_gamma_set,
366 .gamma_get = radeon_crtc_fb_gamma_get,
367 .fb_probe = radeon_fb_find_or_create_single,
370 int radeon_fbdev_init(struct radeon_device *rdev)
372 struct radeon_fbdev *rfbdev;
376 /* select 8 bpp console on RN50 or 16MB cards */
377 if (ASIC_IS_RN50(rdev) || rdev->mc.real_vram_size <= (32*1024*1024))
380 rfbdev = kzalloc(sizeof(struct radeon_fbdev), GFP_KERNEL);
385 rdev->mode_info.rfbdev = rfbdev;
386 rfbdev->helper.funcs = &radeon_fb_helper_funcs;
388 ret = drm_fb_helper_init(rdev->ddev, &rfbdev->helper,
390 RADEONFB_CONN_LIMIT);
396 drm_fb_helper_single_add_all_connectors(&rfbdev->helper);
397 drm_fb_helper_initial_config(&rfbdev->helper, bpp_sel);
401 void radeon_fbdev_fini(struct radeon_device *rdev)
403 if (!rdev->mode_info.rfbdev)
406 radeon_fbdev_destroy(rdev->ddev, rdev->mode_info.rfbdev);
407 kfree(rdev->mode_info.rfbdev);
408 rdev->mode_info.rfbdev = NULL;
411 void radeon_fbdev_set_suspend(struct radeon_device *rdev, int state)
413 fb_set_suspend(rdev->mode_info.rfbdev->helper.fbdev, state);
416 int radeon_fbdev_total_size(struct radeon_device *rdev)
418 struct radeon_bo *robj;
421 robj = gem_to_radeon_bo(rdev->mode_info.rfbdev->rfb.obj);
422 size += radeon_bo_size(robj);
426 bool radeon_fbdev_robj_is_fb(struct radeon_device *rdev, struct radeon_bo *robj)
428 if (robj == gem_to_radeon_bo(rdev->mode_info.rfbdev->rfb.obj))