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>
28 #include <linux/pm_runtime.h>
31 #include <drm/drm_crtc.h>
32 #include <drm/drm_crtc_helper.h>
33 #include <drm/amdgpu_drm.h>
36 #include "amdgpu_gem.h"
38 #include <drm/drm_fb_helper.h>
40 #include <linux/vga_switcheroo.h>
42 #include "amdgpu_display.h"
45 this contains a helper + a amdgpu fb
46 the helper contains a pointer to amdgpu framebuffer baseclass.
50 amdgpufb_open(struct fb_info *info, int user)
52 struct amdgpu_fbdev *rfbdev = info->par;
53 struct amdgpu_device *adev = rfbdev->adev;
54 int ret = pm_runtime_get_sync(adev->ddev->dev);
55 if (ret < 0 && ret != -EACCES) {
56 pm_runtime_mark_last_busy(adev->ddev->dev);
57 pm_runtime_put_autosuspend(adev->ddev->dev);
64 amdgpufb_release(struct fb_info *info, int user)
66 struct amdgpu_fbdev *rfbdev = info->par;
67 struct amdgpu_device *adev = rfbdev->adev;
69 pm_runtime_mark_last_busy(adev->ddev->dev);
70 pm_runtime_put_autosuspend(adev->ddev->dev);
74 static struct fb_ops amdgpufb_ops = {
76 DRM_FB_HELPER_DEFAULT_OPS,
77 .fb_open = amdgpufb_open,
78 .fb_release = amdgpufb_release,
79 .fb_fillrect = drm_fb_helper_cfb_fillrect,
80 .fb_copyarea = drm_fb_helper_cfb_copyarea,
81 .fb_imageblit = drm_fb_helper_cfb_imageblit,
85 int amdgpu_align_pitch(struct amdgpu_device *adev, int width, int cpp, bool tiled)
103 aligned += pitch_mask;
104 aligned &= ~pitch_mask;
105 return aligned * cpp;
108 static void amdgpufb_destroy_pinned_object(struct drm_gem_object *gobj)
110 struct amdgpu_bo *abo = gem_to_amdgpu_bo(gobj);
113 ret = amdgpu_bo_reserve(abo, true);
114 if (likely(ret == 0)) {
115 amdgpu_bo_kunmap(abo);
116 amdgpu_bo_unpin(abo);
117 amdgpu_bo_unreserve(abo);
119 drm_gem_object_put_unlocked(gobj);
122 static int amdgpufb_create_pinned_object(struct amdgpu_fbdev *rfbdev,
123 struct drm_mode_fb_cmd2 *mode_cmd,
124 struct drm_gem_object **gobj_p)
126 struct amdgpu_device *adev = rfbdev->adev;
127 struct drm_gem_object *gobj = NULL;
128 struct amdgpu_bo *abo = NULL;
129 bool fb_tiled = false; /* useful for testing */
130 u32 tiling_flags = 0, domain;
132 int aligned_size, size;
133 int height = mode_cmd->height;
136 cpp = drm_format_plane_cpp(mode_cmd->pixel_format, 0);
138 /* need to align pitch with crtc limits */
139 mode_cmd->pitches[0] = amdgpu_align_pitch(adev, mode_cmd->width, cpp,
141 domain = amdgpu_display_supported_domains(adev);
143 height = ALIGN(mode_cmd->height, 8);
144 size = mode_cmd->pitches[0] * height;
145 aligned_size = ALIGN(size, PAGE_SIZE);
146 ret = amdgpu_gem_object_create(adev, aligned_size, 0, domain,
147 AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED |
148 AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS |
149 AMDGPU_GEM_CREATE_VRAM_CLEARED,
150 ttm_bo_type_kernel, NULL, &gobj);
152 pr_err("failed to allocate framebuffer (%d)\n", aligned_size);
155 abo = gem_to_amdgpu_bo(gobj);
158 tiling_flags = AMDGPU_TILING_SET(ARRAY_MODE, GRPH_ARRAY_2D_TILED_THIN1);
160 ret = amdgpu_bo_reserve(abo, false);
161 if (unlikely(ret != 0))
165 ret = amdgpu_bo_set_tiling_flags(abo,
168 dev_err(adev->dev, "FB failed to set tiling flags\n");
172 ret = amdgpu_bo_pin(abo, domain);
174 amdgpu_bo_unreserve(abo);
178 ret = amdgpu_ttm_alloc_gart(&abo->tbo);
180 amdgpu_bo_unreserve(abo);
181 dev_err(adev->dev, "%p bind failed\n", abo);
185 ret = amdgpu_bo_kmap(abo, NULL);
186 amdgpu_bo_unreserve(abo);
194 amdgpufb_destroy_pinned_object(gobj);
199 static int amdgpufb_create(struct drm_fb_helper *helper,
200 struct drm_fb_helper_surface_size *sizes)
202 struct amdgpu_fbdev *rfbdev = (struct amdgpu_fbdev *)helper;
203 struct amdgpu_device *adev = rfbdev->adev;
204 struct fb_info *info;
205 struct drm_framebuffer *fb = NULL;
206 struct drm_mode_fb_cmd2 mode_cmd;
207 struct drm_gem_object *gobj = NULL;
208 struct amdgpu_bo *abo = NULL;
212 mode_cmd.width = sizes->surface_width;
213 mode_cmd.height = sizes->surface_height;
215 if (sizes->surface_bpp == 24)
216 sizes->surface_bpp = 32;
218 mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
219 sizes->surface_depth);
221 ret = amdgpufb_create_pinned_object(rfbdev, &mode_cmd, &gobj);
223 DRM_ERROR("failed to create fbcon object %d\n", ret);
227 abo = gem_to_amdgpu_bo(gobj);
229 /* okay we have an object now allocate the framebuffer */
230 info = drm_fb_helper_alloc_fbi(helper);
237 info->skip_vt_switch = true;
239 ret = amdgpu_display_framebuffer_init(adev->ddev, &rfbdev->rfb,
242 DRM_ERROR("failed to initialize framebuffer %d\n", ret);
246 fb = &rfbdev->rfb.base;
249 rfbdev->helper.fb = fb;
251 strcpy(info->fix.id, "amdgpudrmfb");
253 drm_fb_helper_fill_fix(info, fb->pitches[0], fb->format->depth);
255 info->fbops = &amdgpufb_ops;
257 tmp = amdgpu_bo_gpu_offset(abo) - adev->gmc.vram_start;
258 info->fix.smem_start = adev->gmc.aper_base + tmp;
259 info->fix.smem_len = amdgpu_bo_size(abo);
260 info->screen_base = amdgpu_bo_kptr(abo);
261 info->screen_size = amdgpu_bo_size(abo);
263 drm_fb_helper_fill_var(info, &rfbdev->helper, sizes->fb_width, sizes->fb_height);
265 /* setup aperture base/size for vesafb takeover */
266 info->apertures->ranges[0].base = adev->ddev->mode_config.fb_base;
267 info->apertures->ranges[0].size = adev->gmc.aper_size;
269 /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
271 if (info->screen_base == NULL) {
276 DRM_INFO("fb mappable at 0x%lX\n", info->fix.smem_start);
277 DRM_INFO("vram apper at 0x%lX\n", (unsigned long)adev->gmc.aper_base);
278 DRM_INFO("size %lu\n", (unsigned long)amdgpu_bo_size(abo));
279 DRM_INFO("fb depth is %d\n", fb->format->depth);
280 DRM_INFO(" pitch is %d\n", fb->pitches[0]);
282 vga_switcheroo_client_fb_set(adev->ddev->pdev, info);
290 drm_gem_object_put_unlocked(gobj);
291 drm_framebuffer_unregister_private(fb);
292 drm_framebuffer_cleanup(fb);
298 static int amdgpu_fbdev_destroy(struct drm_device *dev, struct amdgpu_fbdev *rfbdev)
300 struct amdgpu_framebuffer *rfb = &rfbdev->rfb;
302 drm_fb_helper_unregister_fbi(&rfbdev->helper);
304 if (rfb->base.obj[0]) {
305 amdgpufb_destroy_pinned_object(rfb->base.obj[0]);
306 rfb->base.obj[0] = NULL;
307 drm_framebuffer_unregister_private(&rfb->base);
308 drm_framebuffer_cleanup(&rfb->base);
310 drm_fb_helper_fini(&rfbdev->helper);
315 static const struct drm_fb_helper_funcs amdgpu_fb_helper_funcs = {
316 .fb_probe = amdgpufb_create,
319 int amdgpu_fbdev_init(struct amdgpu_device *adev)
321 struct amdgpu_fbdev *rfbdev;
325 /* don't init fbdev on hw without DCE */
326 if (!adev->mode_info.mode_config_initialized)
329 /* don't init fbdev if there are no connectors */
330 if (list_empty(&adev->ddev->mode_config.connector_list))
333 /* select 8 bpp console on low vram cards */
334 if (adev->gmc.real_vram_size <= (32*1024*1024))
337 rfbdev = kzalloc(sizeof(struct amdgpu_fbdev), GFP_KERNEL);
342 adev->mode_info.rfbdev = rfbdev;
344 drm_fb_helper_prepare(adev->ddev, &rfbdev->helper,
345 &amdgpu_fb_helper_funcs);
347 ret = drm_fb_helper_init(adev->ddev, &rfbdev->helper,
348 AMDGPUFB_CONN_LIMIT);
354 drm_fb_helper_single_add_all_connectors(&rfbdev->helper);
356 /* disable all the possible outputs/crtcs before entering KMS mode */
357 if (!amdgpu_device_has_dc_support(adev))
358 drm_helper_disable_unused_functions(adev->ddev);
360 drm_fb_helper_initial_config(&rfbdev->helper, bpp_sel);
364 void amdgpu_fbdev_fini(struct amdgpu_device *adev)
366 if (!adev->mode_info.rfbdev)
369 amdgpu_fbdev_destroy(adev->ddev, adev->mode_info.rfbdev);
370 kfree(adev->mode_info.rfbdev);
371 adev->mode_info.rfbdev = NULL;
374 void amdgpu_fbdev_set_suspend(struct amdgpu_device *adev, int state)
376 if (adev->mode_info.rfbdev)
377 drm_fb_helper_set_suspend_unlocked(&adev->mode_info.rfbdev->helper,
381 int amdgpu_fbdev_total_size(struct amdgpu_device *adev)
383 struct amdgpu_bo *robj;
386 if (!adev->mode_info.rfbdev)
389 robj = gem_to_amdgpu_bo(adev->mode_info.rfbdev->rfb.base.obj[0]);
390 size += amdgpu_bo_size(robj);
394 bool amdgpu_fbdev_robj_is_fb(struct amdgpu_device *adev, struct amdgpu_bo *robj)
396 if (!adev->mode_info.rfbdev)
398 if (robj == gem_to_amdgpu_bo(adev->mode_info.rfbdev->rfb.base.obj[0]))