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.
27 #include <linux/module.h>
28 #include <linux/kernel.h>
29 #include <linux/errno.h>
30 #include <linux/string.h>
32 #include <linux/tty.h>
33 #include <linux/sysrq.h>
34 #include <linux/delay.h>
36 #include <linux/init.h>
37 #include <linux/vga_switcheroo.h>
40 #include <drm/drm_crtc.h>
41 #include <drm/drm_fb_helper.h>
42 #include "intel_drv.h"
43 #include <drm/i915_drm.h>
46 static struct fb_ops intelfb_ops
= {
48 .fb_check_var
= drm_fb_helper_check_var
,
49 .fb_set_par
= drm_fb_helper_set_par
,
50 .fb_fillrect
= cfb_fillrect
,
51 .fb_copyarea
= cfb_copyarea
,
52 .fb_imageblit
= cfb_imageblit
,
53 .fb_pan_display
= drm_fb_helper_pan_display
,
54 .fb_blank
= drm_fb_helper_blank
,
55 .fb_setcmap
= drm_fb_helper_setcmap
,
56 .fb_debug_enter
= drm_fb_helper_debug_enter
,
57 .fb_debug_leave
= drm_fb_helper_debug_leave
,
60 static int intelfb_create(struct drm_fb_helper
*helper
,
61 struct drm_fb_helper_surface_size
*sizes
)
63 struct intel_fbdev
*ifbdev
= (struct intel_fbdev
*)helper
;
64 struct drm_device
*dev
= ifbdev
->helper
.dev
;
65 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
67 struct drm_framebuffer
*fb
;
68 struct drm_mode_fb_cmd2 mode_cmd
= {};
69 struct drm_i915_gem_object
*obj
;
70 struct device
*device
= &dev
->pdev
->dev
;
73 /* we don't do packed 24bpp */
74 if (sizes
->surface_bpp
== 24)
75 sizes
->surface_bpp
= 32;
77 mode_cmd
.width
= sizes
->surface_width
;
78 mode_cmd
.height
= sizes
->surface_height
;
80 mode_cmd
.pitches
[0] = ALIGN(mode_cmd
.width
* ((sizes
->surface_bpp
+ 7) /
82 mode_cmd
.pixel_format
= drm_mode_legacy_fb_format(sizes
->surface_bpp
,
83 sizes
->surface_depth
);
85 size
= mode_cmd
.pitches
[0] * mode_cmd
.height
;
86 size
= ALIGN(size
, PAGE_SIZE
);
87 obj
= i915_gem_object_create_stolen(dev
, size
);
89 obj
= i915_gem_alloc_object(dev
, size
);
91 DRM_ERROR("failed to allocate framebuffer\n");
96 mutex_lock(&dev
->struct_mutex
);
98 /* Flush everything out, we'll be doing GTT only from now on */
99 ret
= intel_pin_and_fence_fb_obj(dev
, obj
, NULL
);
101 DRM_ERROR("failed to pin fb: %d\n", ret
);
105 info
= framebuffer_alloc(0, device
);
113 ret
= intel_framebuffer_init(dev
, &ifbdev
->ifb
, &mode_cmd
, obj
);
117 fb
= &ifbdev
->ifb
.base
;
119 ifbdev
->helper
.fb
= fb
;
120 ifbdev
->helper
.fbdev
= info
;
122 strcpy(info
->fix
.id
, "inteldrmfb");
124 info
->flags
= FBINFO_DEFAULT
| FBINFO_CAN_FORCE_OUTPUT
;
125 info
->fbops
= &intelfb_ops
;
127 ret
= fb_alloc_cmap(&info
->cmap
, 256, 0);
132 /* setup aperture base/size for vesafb takeover */
133 info
->apertures
= alloc_apertures(1);
134 if (!info
->apertures
) {
138 info
->apertures
->ranges
[0].base
= dev
->mode_config
.fb_base
;
139 info
->apertures
->ranges
[0].size
= dev_priv
->gtt
.mappable_end
;
141 info
->fix
.smem_start
= dev
->mode_config
.fb_base
+ obj
->gtt_offset
;
142 info
->fix
.smem_len
= size
;
145 ioremap_wc(dev_priv
->gtt
.mappable_base
+ obj
->gtt_offset
,
147 if (!info
->screen_base
) {
151 info
->screen_size
= size
;
153 /* This driver doesn't need a VT switch to restore the mode on resume */
154 info
->skip_vt_switch
= true;
156 drm_fb_helper_fill_fix(info
, fb
->pitches
[0], fb
->depth
);
157 drm_fb_helper_fill_var(info
, &ifbdev
->helper
, sizes
->fb_width
, sizes
->fb_height
);
159 /* If the object is shmemfs backed, it will have given us zeroed pages.
160 * If the object is stolen however, it will be full of whatever
161 * garbage was left in there.
163 if (ifbdev
->ifb
.obj
->stolen
)
164 memset_io(info
->screen_base
, 0, info
->screen_size
);
166 /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
168 DRM_DEBUG_KMS("allocated %dx%d fb: 0x%08x, bo %p\n",
169 fb
->width
, fb
->height
,
170 obj
->gtt_offset
, obj
);
173 mutex_unlock(&dev
->struct_mutex
);
174 vga_switcheroo_client_fb_set(dev
->pdev
, info
);
178 i915_gem_object_unpin(obj
);
180 drm_gem_object_unreference(&obj
->base
);
181 mutex_unlock(&dev
->struct_mutex
);
186 static struct drm_fb_helper_funcs intel_fb_helper_funcs
= {
187 .gamma_set
= intel_crtc_fb_gamma_set
,
188 .gamma_get
= intel_crtc_fb_gamma_get
,
189 .fb_probe
= intelfb_create
,
192 static void intel_fbdev_destroy(struct drm_device
*dev
,
193 struct intel_fbdev
*ifbdev
)
195 struct fb_info
*info
;
196 struct intel_framebuffer
*ifb
= &ifbdev
->ifb
;
198 if (ifbdev
->helper
.fbdev
) {
199 info
= ifbdev
->helper
.fbdev
;
200 unregister_framebuffer(info
);
201 iounmap(info
->screen_base
);
203 fb_dealloc_cmap(&info
->cmap
);
204 framebuffer_release(info
);
207 drm_fb_helper_fini(&ifbdev
->helper
);
209 drm_framebuffer_unregister_private(&ifb
->base
);
210 drm_framebuffer_cleanup(&ifb
->base
);
212 drm_gem_object_unreference_unlocked(&ifb
->obj
->base
);
217 int intel_fbdev_init(struct drm_device
*dev
)
219 struct intel_fbdev
*ifbdev
;
220 drm_i915_private_t
*dev_priv
= dev
->dev_private
;
223 ifbdev
= kzalloc(sizeof(struct intel_fbdev
), GFP_KERNEL
);
227 dev_priv
->fbdev
= ifbdev
;
228 ifbdev
->helper
.funcs
= &intel_fb_helper_funcs
;
230 ret
= drm_fb_helper_init(dev
, &ifbdev
->helper
,
231 INTEL_INFO(dev
)->num_pipes
,
238 drm_fb_helper_single_add_all_connectors(&ifbdev
->helper
);
243 void intel_fbdev_initial_config(struct drm_device
*dev
)
245 drm_i915_private_t
*dev_priv
= dev
->dev_private
;
247 /* Due to peculiar init order wrt to hpd handling this is separate. */
248 drm_fb_helper_initial_config(&dev_priv
->fbdev
->helper
, 32);
251 void intel_fbdev_fini(struct drm_device
*dev
)
253 drm_i915_private_t
*dev_priv
= dev
->dev_private
;
254 if (!dev_priv
->fbdev
)
257 intel_fbdev_destroy(dev
, dev_priv
->fbdev
);
258 kfree(dev_priv
->fbdev
);
259 dev_priv
->fbdev
= NULL
;
262 void intel_fbdev_set_suspend(struct drm_device
*dev
, int state
)
264 drm_i915_private_t
*dev_priv
= dev
->dev_private
;
265 struct intel_fbdev
*ifbdev
= dev_priv
->fbdev
;
266 struct fb_info
*info
;
271 info
= ifbdev
->helper
.fbdev
;
273 /* On resume from hibernation: If the object is shmemfs backed, it has
274 * been restored from swap. If the object is stolen however, it will be
275 * full of whatever garbage was left in there.
277 if (!state
&& ifbdev
->ifb
.obj
->stolen
)
278 memset_io(info
->screen_base
, 0, info
->screen_size
);
280 fb_set_suspend(info
, state
);
283 MODULE_LICENSE("GPL and additional rights");
285 void intel_fb_output_poll_changed(struct drm_device
*dev
)
287 drm_i915_private_t
*dev_priv
= dev
->dev_private
;
288 drm_fb_helper_hotplug_event(&dev_priv
->fbdev
->helper
);
291 void intel_fb_restore_mode(struct drm_device
*dev
)
294 drm_i915_private_t
*dev_priv
= dev
->dev_private
;
295 struct drm_mode_config
*config
= &dev
->mode_config
;
296 struct drm_plane
*plane
;
298 if (INTEL_INFO(dev
)->num_pipes
== 0)
301 drm_modeset_lock_all(dev
);
303 ret
= drm_fb_helper_restore_fbdev_mode(&dev_priv
->fbdev
->helper
);
305 DRM_DEBUG("failed to restore crtc mode\n");
307 /* Be sure to shut off any planes that may be active */
308 list_for_each_entry(plane
, &config
->plane_list
, head
)
310 plane
->funcs
->disable_plane(plane
);
312 drm_modeset_unlock_all(dev
);