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>
30 #include <drm/drm_crtc.h>
31 #include <drm/drm_crtc_helper.h>
32 #include <drm/amdgpu_drm.h>
36 #include <drm/drm_fb_helper.h>
38 #include <linux/vga_switcheroo.h>
41 this contains a helper + a amdgpu fb
42 the helper contains a pointer to amdgpu framebuffer baseclass.
45 struct drm_fb_helper helper
;
46 struct amdgpu_framebuffer rfb
;
47 struct amdgpu_device
*adev
;
50 static struct fb_ops amdgpufb_ops
= {
52 .fb_check_var
= drm_fb_helper_check_var
,
53 .fb_set_par
= drm_fb_helper_set_par
,
54 .fb_fillrect
= drm_fb_helper_cfb_fillrect
,
55 .fb_copyarea
= drm_fb_helper_cfb_copyarea
,
56 .fb_imageblit
= drm_fb_helper_cfb_imageblit
,
57 .fb_pan_display
= drm_fb_helper_pan_display
,
58 .fb_blank
= drm_fb_helper_blank
,
59 .fb_setcmap
= drm_fb_helper_setcmap
,
60 .fb_debug_enter
= drm_fb_helper_debug_enter
,
61 .fb_debug_leave
= drm_fb_helper_debug_leave
,
65 int amdgpu_align_pitch(struct amdgpu_device
*adev
, int width
, int bpp
, bool tiled
)
83 aligned
+= pitch_mask
;
84 aligned
&= ~pitch_mask
;
88 static void amdgpufb_destroy_pinned_object(struct drm_gem_object
*gobj
)
90 struct amdgpu_bo
*rbo
= gem_to_amdgpu_bo(gobj
);
93 ret
= amdgpu_bo_reserve(rbo
, false);
94 if (likely(ret
== 0)) {
95 amdgpu_bo_kunmap(rbo
);
97 amdgpu_bo_unreserve(rbo
);
99 drm_gem_object_unreference_unlocked(gobj
);
102 static int amdgpufb_create_pinned_object(struct amdgpu_fbdev
*rfbdev
,
103 struct drm_mode_fb_cmd2
*mode_cmd
,
104 struct drm_gem_object
**gobj_p
)
106 struct amdgpu_device
*adev
= rfbdev
->adev
;
107 struct drm_gem_object
*gobj
= NULL
;
108 struct amdgpu_bo
*rbo
= NULL
;
109 bool fb_tiled
= false; /* useful for testing */
110 u32 tiling_flags
= 0;
112 int aligned_size
, size
;
113 int height
= mode_cmd
->height
;
116 drm_fb_get_bpp_depth(mode_cmd
->pixel_format
, &depth
, &bpp
);
118 /* need to align pitch with crtc limits */
119 mode_cmd
->pitches
[0] = amdgpu_align_pitch(adev
, mode_cmd
->width
, bpp
,
120 fb_tiled
) * ((bpp
+ 1) / 8);
122 height
= ALIGN(mode_cmd
->height
, 8);
123 size
= mode_cmd
->pitches
[0] * height
;
124 aligned_size
= ALIGN(size
, PAGE_SIZE
);
125 ret
= amdgpu_gem_object_create(adev
, aligned_size
, 0,
126 AMDGPU_GEM_DOMAIN_VRAM
,
127 AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED
,
130 printk(KERN_ERR
"failed to allocate framebuffer (%d)\n",
134 rbo
= gem_to_amdgpu_bo(gobj
);
137 tiling_flags
= AMDGPU_TILING_SET(ARRAY_MODE
, GRPH_ARRAY_2D_TILED_THIN1
);
139 ret
= amdgpu_bo_reserve(rbo
, false);
140 if (unlikely(ret
!= 0))
144 ret
= amdgpu_bo_set_tiling_flags(rbo
,
147 dev_err(adev
->dev
, "FB failed to set tiling flags\n");
151 ret
= amdgpu_bo_pin_restricted(rbo
, AMDGPU_GEM_DOMAIN_VRAM
, 0, 0, NULL
);
153 amdgpu_bo_unreserve(rbo
);
156 ret
= amdgpu_bo_kmap(rbo
, NULL
);
157 amdgpu_bo_unreserve(rbo
);
165 amdgpufb_destroy_pinned_object(gobj
);
170 static int amdgpufb_create(struct drm_fb_helper
*helper
,
171 struct drm_fb_helper_surface_size
*sizes
)
173 struct amdgpu_fbdev
*rfbdev
= (struct amdgpu_fbdev
*)helper
;
174 struct amdgpu_device
*adev
= rfbdev
->adev
;
175 struct fb_info
*info
;
176 struct drm_framebuffer
*fb
= NULL
;
177 struct drm_mode_fb_cmd2 mode_cmd
;
178 struct drm_gem_object
*gobj
= NULL
;
179 struct amdgpu_bo
*rbo
= NULL
;
183 mode_cmd
.width
= sizes
->surface_width
;
184 mode_cmd
.height
= sizes
->surface_height
;
186 if (sizes
->surface_bpp
== 24)
187 sizes
->surface_bpp
= 32;
189 mode_cmd
.pixel_format
= drm_mode_legacy_fb_format(sizes
->surface_bpp
,
190 sizes
->surface_depth
);
192 ret
= amdgpufb_create_pinned_object(rfbdev
, &mode_cmd
, &gobj
);
194 DRM_ERROR("failed to create fbcon object %d\n", ret
);
198 rbo
= gem_to_amdgpu_bo(gobj
);
200 /* okay we have an object now allocate the framebuffer */
201 info
= drm_fb_helper_alloc_fbi(helper
);
208 info
->skip_vt_switch
= true;
210 ret
= amdgpu_framebuffer_init(adev
->ddev
, &rfbdev
->rfb
, &mode_cmd
, gobj
);
212 DRM_ERROR("failed to initialize framebuffer %d\n", ret
);
213 goto out_destroy_fbi
;
216 fb
= &rfbdev
->rfb
.base
;
219 rfbdev
->helper
.fb
= fb
;
221 memset_io(rbo
->kptr
, 0x0, amdgpu_bo_size(rbo
));
223 strcpy(info
->fix
.id
, "amdgpudrmfb");
225 drm_fb_helper_fill_fix(info
, fb
->pitches
[0], fb
->depth
);
227 info
->flags
= FBINFO_DEFAULT
| FBINFO_CAN_FORCE_OUTPUT
;
228 info
->fbops
= &amdgpufb_ops
;
230 tmp
= amdgpu_bo_gpu_offset(rbo
) - adev
->mc
.vram_start
;
231 info
->fix
.smem_start
= adev
->mc
.aper_base
+ tmp
;
232 info
->fix
.smem_len
= amdgpu_bo_size(rbo
);
233 info
->screen_base
= rbo
->kptr
;
234 info
->screen_size
= amdgpu_bo_size(rbo
);
236 drm_fb_helper_fill_var(info
, &rfbdev
->helper
, sizes
->fb_width
, sizes
->fb_height
);
238 /* setup aperture base/size for vesafb takeover */
239 info
->apertures
->ranges
[0].base
= adev
->ddev
->mode_config
.fb_base
;
240 info
->apertures
->ranges
[0].size
= adev
->mc
.aper_size
;
242 /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
244 if (info
->screen_base
== NULL
) {
246 goto out_destroy_fbi
;
249 DRM_INFO("fb mappable at 0x%lX\n", info
->fix
.smem_start
);
250 DRM_INFO("vram apper at 0x%lX\n", (unsigned long)adev
->mc
.aper_base
);
251 DRM_INFO("size %lu\n", (unsigned long)amdgpu_bo_size(rbo
));
252 DRM_INFO("fb depth is %d\n", fb
->depth
);
253 DRM_INFO(" pitch is %d\n", fb
->pitches
[0]);
255 vga_switcheroo_client_fb_set(adev
->ddev
->pdev
, info
);
259 drm_fb_helper_release_fbi(helper
);
265 drm_gem_object_unreference_unlocked(gobj
);
266 drm_framebuffer_unregister_private(fb
);
267 drm_framebuffer_cleanup(fb
);
273 void amdgpu_fb_output_poll_changed(struct amdgpu_device
*adev
)
275 if (adev
->mode_info
.rfbdev
)
276 drm_fb_helper_hotplug_event(&adev
->mode_info
.rfbdev
->helper
);
279 static int amdgpu_fbdev_destroy(struct drm_device
*dev
, struct amdgpu_fbdev
*rfbdev
)
281 struct amdgpu_framebuffer
*rfb
= &rfbdev
->rfb
;
283 drm_fb_helper_unregister_fbi(&rfbdev
->helper
);
284 drm_fb_helper_release_fbi(&rfbdev
->helper
);
287 amdgpufb_destroy_pinned_object(rfb
->obj
);
290 drm_fb_helper_fini(&rfbdev
->helper
);
291 drm_framebuffer_unregister_private(&rfb
->base
);
292 drm_framebuffer_cleanup(&rfb
->base
);
297 /** Sets the color ramps on behalf of fbcon */
298 static void amdgpu_crtc_fb_gamma_set(struct drm_crtc
*crtc
, u16 red
, u16 green
,
301 struct amdgpu_crtc
*amdgpu_crtc
= to_amdgpu_crtc(crtc
);
303 amdgpu_crtc
->lut_r
[regno
] = red
>> 6;
304 amdgpu_crtc
->lut_g
[regno
] = green
>> 6;
305 amdgpu_crtc
->lut_b
[regno
] = blue
>> 6;
308 /** Gets the color ramps on behalf of fbcon */
309 static void amdgpu_crtc_fb_gamma_get(struct drm_crtc
*crtc
, u16
*red
, u16
*green
,
310 u16
*blue
, int regno
)
312 struct amdgpu_crtc
*amdgpu_crtc
= to_amdgpu_crtc(crtc
);
314 *red
= amdgpu_crtc
->lut_r
[regno
] << 6;
315 *green
= amdgpu_crtc
->lut_g
[regno
] << 6;
316 *blue
= amdgpu_crtc
->lut_b
[regno
] << 6;
319 static const struct drm_fb_helper_funcs amdgpu_fb_helper_funcs
= {
320 .gamma_set
= amdgpu_crtc_fb_gamma_set
,
321 .gamma_get
= amdgpu_crtc_fb_gamma_get
,
322 .fb_probe
= amdgpufb_create
,
325 int amdgpu_fbdev_init(struct amdgpu_device
*adev
)
327 struct amdgpu_fbdev
*rfbdev
;
331 /* don't init fbdev on hw without DCE */
332 if (!adev
->mode_info
.mode_config_initialized
)
335 /* don't init fbdev if there are no connectors */
336 if (list_empty(&adev
->ddev
->mode_config
.connector_list
))
339 /* select 8 bpp console on low vram cards */
340 if (adev
->mc
.real_vram_size
<= (32*1024*1024))
343 rfbdev
= kzalloc(sizeof(struct amdgpu_fbdev
), GFP_KERNEL
);
348 adev
->mode_info
.rfbdev
= rfbdev
;
350 drm_fb_helper_prepare(adev
->ddev
, &rfbdev
->helper
,
351 &amdgpu_fb_helper_funcs
);
353 ret
= drm_fb_helper_init(adev
->ddev
, &rfbdev
->helper
,
354 adev
->mode_info
.num_crtc
,
355 AMDGPUFB_CONN_LIMIT
);
361 drm_fb_helper_single_add_all_connectors(&rfbdev
->helper
);
363 /* disable all the possible outputs/crtcs before entering KMS mode */
364 drm_helper_disable_unused_functions(adev
->ddev
);
366 drm_fb_helper_initial_config(&rfbdev
->helper
, bpp_sel
);
370 void amdgpu_fbdev_fini(struct amdgpu_device
*adev
)
372 if (!adev
->mode_info
.rfbdev
)
375 amdgpu_fbdev_destroy(adev
->ddev
, adev
->mode_info
.rfbdev
);
376 kfree(adev
->mode_info
.rfbdev
);
377 adev
->mode_info
.rfbdev
= NULL
;
380 void amdgpu_fbdev_set_suspend(struct amdgpu_device
*adev
, int state
)
382 if (adev
->mode_info
.rfbdev
)
383 drm_fb_helper_set_suspend(&adev
->mode_info
.rfbdev
->helper
,
387 int amdgpu_fbdev_total_size(struct amdgpu_device
*adev
)
389 struct amdgpu_bo
*robj
;
392 if (!adev
->mode_info
.rfbdev
)
395 robj
= gem_to_amdgpu_bo(adev
->mode_info
.rfbdev
->rfb
.obj
);
396 size
+= amdgpu_bo_size(robj
);
400 bool amdgpu_fbdev_robj_is_fb(struct amdgpu_device
*adev
, struct amdgpu_bo
*robj
)
402 if (!adev
->mode_info
.rfbdev
)
404 if (robj
== gem_to_amdgpu_bo(adev
->mode_info
.rfbdev
->rfb
.obj
))
409 void amdgpu_fbdev_restore_mode(struct amdgpu_device
*adev
)
411 struct amdgpu_fbdev
*afbdev
= adev
->mode_info
.rfbdev
;
412 struct drm_fb_helper
*fb_helper
;
418 fb_helper
= &afbdev
->helper
;
420 ret
= drm_fb_helper_restore_fbdev_mode_unlocked(fb_helper
);
422 DRM_DEBUG("failed to restore crtc mode\n");