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>
37 #include <drm/drm_fb_helper.h>
39 #include <linux/vga_switcheroo.h>
42 this contains a helper + a amdgpu fb
43 the helper contains a pointer to amdgpu framebuffer baseclass.
46 struct drm_fb_helper helper
;
47 struct amdgpu_framebuffer rfb
;
48 struct amdgpu_device
*adev
;
52 amdgpufb_open(struct fb_info
*info
, int user
)
54 struct amdgpu_fbdev
*rfbdev
= info
->par
;
55 struct amdgpu_device
*adev
= rfbdev
->adev
;
56 int ret
= pm_runtime_get_sync(adev
->ddev
->dev
);
57 if (ret
< 0 && ret
!= -EACCES
) {
58 pm_runtime_mark_last_busy(adev
->ddev
->dev
);
59 pm_runtime_put_autosuspend(adev
->ddev
->dev
);
66 amdgpufb_release(struct fb_info
*info
, int user
)
68 struct amdgpu_fbdev
*rfbdev
= info
->par
;
69 struct amdgpu_device
*adev
= rfbdev
->adev
;
71 pm_runtime_mark_last_busy(adev
->ddev
->dev
);
72 pm_runtime_put_autosuspend(adev
->ddev
->dev
);
76 static struct fb_ops amdgpufb_ops
= {
78 DRM_FB_HELPER_DEFAULT_OPS
,
79 .fb_open
= amdgpufb_open
,
80 .fb_release
= amdgpufb_release
,
81 .fb_fillrect
= drm_fb_helper_cfb_fillrect
,
82 .fb_copyarea
= drm_fb_helper_cfb_copyarea
,
83 .fb_imageblit
= drm_fb_helper_cfb_imageblit
,
87 int amdgpu_align_pitch(struct amdgpu_device
*adev
, int width
, int cpp
, bool tiled
)
105 aligned
+= pitch_mask
;
106 aligned
&= ~pitch_mask
;
107 return aligned
* cpp
;
110 static void amdgpufb_destroy_pinned_object(struct drm_gem_object
*gobj
)
112 struct amdgpu_bo
*abo
= gem_to_amdgpu_bo(gobj
);
115 ret
= amdgpu_bo_reserve(abo
, true);
116 if (likely(ret
== 0)) {
117 amdgpu_bo_kunmap(abo
);
118 amdgpu_bo_unpin(abo
);
119 amdgpu_bo_unreserve(abo
);
121 drm_gem_object_unreference_unlocked(gobj
);
124 static int amdgpufb_create_pinned_object(struct amdgpu_fbdev
*rfbdev
,
125 struct drm_mode_fb_cmd2
*mode_cmd
,
126 struct drm_gem_object
**gobj_p
)
128 struct amdgpu_device
*adev
= rfbdev
->adev
;
129 struct drm_gem_object
*gobj
= NULL
;
130 struct amdgpu_bo
*abo
= NULL
;
131 bool fb_tiled
= false; /* useful for testing */
132 u32 tiling_flags
= 0;
134 int aligned_size
, size
;
135 int height
= mode_cmd
->height
;
138 cpp
= drm_format_plane_cpp(mode_cmd
->pixel_format
, 0);
140 /* need to align pitch with crtc limits */
141 mode_cmd
->pitches
[0] = amdgpu_align_pitch(adev
, mode_cmd
->width
, cpp
,
144 height
= ALIGN(mode_cmd
->height
, 8);
145 size
= mode_cmd
->pitches
[0] * height
;
146 aligned_size
= ALIGN(size
, PAGE_SIZE
);
147 ret
= amdgpu_gem_object_create(adev
, aligned_size
, 0,
148 AMDGPU_GEM_DOMAIN_VRAM
,
149 AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED
|
150 AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS
|
151 AMDGPU_GEM_CREATE_VRAM_CLEARED
,
154 pr_err("failed to allocate framebuffer (%d)\n", aligned_size
);
157 abo
= gem_to_amdgpu_bo(gobj
);
160 tiling_flags
= AMDGPU_TILING_SET(ARRAY_MODE
, GRPH_ARRAY_2D_TILED_THIN1
);
162 ret
= amdgpu_bo_reserve(abo
, false);
163 if (unlikely(ret
!= 0))
167 ret
= amdgpu_bo_set_tiling_flags(abo
,
170 dev_err(adev
->dev
, "FB failed to set tiling flags\n");
174 ret
= amdgpu_bo_pin(abo
, AMDGPU_GEM_DOMAIN_VRAM
, NULL
);
176 amdgpu_bo_unreserve(abo
);
179 ret
= amdgpu_bo_kmap(abo
, NULL
);
180 amdgpu_bo_unreserve(abo
);
188 amdgpufb_destroy_pinned_object(gobj
);
193 static int amdgpufb_create(struct drm_fb_helper
*helper
,
194 struct drm_fb_helper_surface_size
*sizes
)
196 struct amdgpu_fbdev
*rfbdev
= (struct amdgpu_fbdev
*)helper
;
197 struct amdgpu_device
*adev
= rfbdev
->adev
;
198 struct fb_info
*info
;
199 struct drm_framebuffer
*fb
= NULL
;
200 struct drm_mode_fb_cmd2 mode_cmd
;
201 struct drm_gem_object
*gobj
= NULL
;
202 struct amdgpu_bo
*abo
= NULL
;
206 mode_cmd
.width
= sizes
->surface_width
;
207 mode_cmd
.height
= sizes
->surface_height
;
209 if (sizes
->surface_bpp
== 24)
210 sizes
->surface_bpp
= 32;
212 mode_cmd
.pixel_format
= drm_mode_legacy_fb_format(sizes
->surface_bpp
,
213 sizes
->surface_depth
);
215 ret
= amdgpufb_create_pinned_object(rfbdev
, &mode_cmd
, &gobj
);
217 DRM_ERROR("failed to create fbcon object %d\n", ret
);
221 abo
= gem_to_amdgpu_bo(gobj
);
223 /* okay we have an object now allocate the framebuffer */
224 info
= drm_fb_helper_alloc_fbi(helper
);
231 info
->skip_vt_switch
= true;
233 ret
= amdgpu_framebuffer_init(adev
->ddev
, &rfbdev
->rfb
, &mode_cmd
, gobj
);
235 DRM_ERROR("failed to initialize framebuffer %d\n", ret
);
239 fb
= &rfbdev
->rfb
.base
;
242 rfbdev
->helper
.fb
= fb
;
244 strcpy(info
->fix
.id
, "amdgpudrmfb");
246 drm_fb_helper_fill_fix(info
, fb
->pitches
[0], fb
->format
->depth
);
248 info
->flags
= FBINFO_DEFAULT
| FBINFO_CAN_FORCE_OUTPUT
;
249 info
->fbops
= &amdgpufb_ops
;
251 tmp
= amdgpu_bo_gpu_offset(abo
) - adev
->mc
.vram_start
;
252 info
->fix
.smem_start
= adev
->mc
.aper_base
+ tmp
;
253 info
->fix
.smem_len
= amdgpu_bo_size(abo
);
254 info
->screen_base
= abo
->kptr
;
255 info
->screen_size
= amdgpu_bo_size(abo
);
257 drm_fb_helper_fill_var(info
, &rfbdev
->helper
, sizes
->fb_width
, sizes
->fb_height
);
259 /* setup aperture base/size for vesafb takeover */
260 info
->apertures
->ranges
[0].base
= adev
->ddev
->mode_config
.fb_base
;
261 info
->apertures
->ranges
[0].size
= adev
->mc
.aper_size
;
263 /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
265 if (info
->screen_base
== NULL
) {
270 DRM_INFO("fb mappable at 0x%lX\n", info
->fix
.smem_start
);
271 DRM_INFO("vram apper at 0x%lX\n", (unsigned long)adev
->mc
.aper_base
);
272 DRM_INFO("size %lu\n", (unsigned long)amdgpu_bo_size(abo
));
273 DRM_INFO("fb depth is %d\n", fb
->format
->depth
);
274 DRM_INFO(" pitch is %d\n", fb
->pitches
[0]);
276 vga_switcheroo_client_fb_set(adev
->ddev
->pdev
, info
);
284 drm_gem_object_unreference_unlocked(gobj
);
285 drm_framebuffer_unregister_private(fb
);
286 drm_framebuffer_cleanup(fb
);
292 void amdgpu_fb_output_poll_changed(struct amdgpu_device
*adev
)
294 if (adev
->mode_info
.rfbdev
)
295 drm_fb_helper_hotplug_event(&adev
->mode_info
.rfbdev
->helper
);
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
);
305 amdgpufb_destroy_pinned_object(rfb
->obj
);
308 drm_fb_helper_fini(&rfbdev
->helper
);
309 drm_framebuffer_unregister_private(&rfb
->base
);
310 drm_framebuffer_cleanup(&rfb
->base
);
315 /** Sets the color ramps on behalf of fbcon */
316 static void amdgpu_crtc_fb_gamma_set(struct drm_crtc
*crtc
, u16 red
, u16 green
,
319 struct amdgpu_crtc
*amdgpu_crtc
= to_amdgpu_crtc(crtc
);
321 amdgpu_crtc
->lut_r
[regno
] = red
>> 6;
322 amdgpu_crtc
->lut_g
[regno
] = green
>> 6;
323 amdgpu_crtc
->lut_b
[regno
] = blue
>> 6;
326 /** Gets the color ramps on behalf of fbcon */
327 static void amdgpu_crtc_fb_gamma_get(struct drm_crtc
*crtc
, u16
*red
, u16
*green
,
328 u16
*blue
, int regno
)
330 struct amdgpu_crtc
*amdgpu_crtc
= to_amdgpu_crtc(crtc
);
332 *red
= amdgpu_crtc
->lut_r
[regno
] << 6;
333 *green
= amdgpu_crtc
->lut_g
[regno
] << 6;
334 *blue
= amdgpu_crtc
->lut_b
[regno
] << 6;
337 static const struct drm_fb_helper_funcs amdgpu_fb_helper_funcs
= {
338 .gamma_set
= amdgpu_crtc_fb_gamma_set
,
339 .gamma_get
= amdgpu_crtc_fb_gamma_get
,
340 .fb_probe
= amdgpufb_create
,
343 int amdgpu_fbdev_init(struct amdgpu_device
*adev
)
345 struct amdgpu_fbdev
*rfbdev
;
349 /* don't init fbdev on hw without DCE */
350 if (!adev
->mode_info
.mode_config_initialized
)
353 /* don't init fbdev if there are no connectors */
354 if (list_empty(&adev
->ddev
->mode_config
.connector_list
))
357 /* select 8 bpp console on low vram cards */
358 if (adev
->mc
.real_vram_size
<= (32*1024*1024))
361 rfbdev
= kzalloc(sizeof(struct amdgpu_fbdev
), GFP_KERNEL
);
366 adev
->mode_info
.rfbdev
= rfbdev
;
368 drm_fb_helper_prepare(adev
->ddev
, &rfbdev
->helper
,
369 &amdgpu_fb_helper_funcs
);
371 ret
= drm_fb_helper_init(adev
->ddev
, &rfbdev
->helper
,
372 AMDGPUFB_CONN_LIMIT
);
378 drm_fb_helper_single_add_all_connectors(&rfbdev
->helper
);
380 /* disable all the possible outputs/crtcs before entering KMS mode */
381 drm_helper_disable_unused_functions(adev
->ddev
);
383 drm_fb_helper_initial_config(&rfbdev
->helper
, bpp_sel
);
387 void amdgpu_fbdev_fini(struct amdgpu_device
*adev
)
389 if (!adev
->mode_info
.rfbdev
)
392 amdgpu_fbdev_destroy(adev
->ddev
, adev
->mode_info
.rfbdev
);
393 kfree(adev
->mode_info
.rfbdev
);
394 adev
->mode_info
.rfbdev
= NULL
;
397 void amdgpu_fbdev_set_suspend(struct amdgpu_device
*adev
, int state
)
399 if (adev
->mode_info
.rfbdev
)
400 drm_fb_helper_set_suspend(&adev
->mode_info
.rfbdev
->helper
,
404 int amdgpu_fbdev_total_size(struct amdgpu_device
*adev
)
406 struct amdgpu_bo
*robj
;
409 if (!adev
->mode_info
.rfbdev
)
412 robj
= gem_to_amdgpu_bo(adev
->mode_info
.rfbdev
->rfb
.obj
);
413 size
+= amdgpu_bo_size(robj
);
417 bool amdgpu_fbdev_robj_is_fb(struct amdgpu_device
*adev
, struct amdgpu_bo
*robj
)
419 if (!adev
->mode_info
.rfbdev
)
421 if (robj
== gem_to_amdgpu_bo(adev
->mode_info
.rfbdev
->rfb
.obj
))
426 void amdgpu_fbdev_restore_mode(struct amdgpu_device
*adev
)
428 struct amdgpu_fbdev
*afbdev
;
429 struct drm_fb_helper
*fb_helper
;
435 afbdev
= adev
->mode_info
.rfbdev
;
440 fb_helper
= &afbdev
->helper
;
442 ret
= drm_fb_helper_restore_fbdev_mode_unlocked(fb_helper
);
444 DRM_DEBUG("failed to restore crtc mode\n");