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>
42 #include "drm_fb_helper.h"
43 #include "intel_drv.h"
47 static struct fb_ops intelfb_ops
= {
49 .fb_check_var
= drm_fb_helper_check_var
,
50 .fb_set_par
= drm_fb_helper_set_par
,
51 .fb_fillrect
= cfb_fillrect
,
52 .fb_copyarea
= cfb_copyarea
,
53 .fb_imageblit
= cfb_imageblit
,
54 .fb_pan_display
= drm_fb_helper_pan_display
,
55 .fb_blank
= drm_fb_helper_blank
,
56 .fb_setcmap
= drm_fb_helper_setcmap
,
57 .fb_debug_enter
= drm_fb_helper_debug_enter
,
58 .fb_debug_leave
= drm_fb_helper_debug_leave
,
61 static int intelfb_create(struct intel_fbdev
*ifbdev
,
62 struct drm_fb_helper_surface_size
*sizes
)
64 struct drm_device
*dev
= ifbdev
->helper
.dev
;
66 struct drm_framebuffer
*fb
;
67 struct drm_mode_fb_cmd mode_cmd
;
68 struct drm_gem_object
*fbo
= NULL
;
69 struct drm_i915_gem_object
*obj_priv
;
70 struct device
*device
= &dev
->pdev
->dev
;
71 int size
, ret
, mmio_bar
= IS_GEN2(dev
) ? 1 : 0;
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
.bpp
= sizes
->surface_bpp
;
81 mode_cmd
.pitch
= ALIGN(mode_cmd
.width
* ((mode_cmd
.bpp
+ 1) / 8), 64);
82 mode_cmd
.depth
= sizes
->surface_depth
;
84 size
= mode_cmd
.pitch
* mode_cmd
.height
;
85 size
= ALIGN(size
, PAGE_SIZE
);
86 fbo
= i915_gem_alloc_object(dev
, size
);
88 DRM_ERROR("failed to allocate framebuffer\n");
92 obj_priv
= to_intel_bo(fbo
);
94 mutex_lock(&dev
->struct_mutex
);
96 /* Flush everything out, we'll be doing GTT only from now on */
97 ret
= intel_pin_and_fence_fb_obj(dev
, fbo
, false);
99 DRM_ERROR("failed to pin fb: %d\n", ret
);
103 info
= framebuffer_alloc(0, device
);
111 ret
= intel_framebuffer_init(dev
, &ifbdev
->ifb
, &mode_cmd
, fbo
);
115 fb
= &ifbdev
->ifb
.base
;
117 ifbdev
->helper
.fb
= fb
;
118 ifbdev
->helper
.fbdev
= info
;
120 strcpy(info
->fix
.id
, "inteldrmfb");
122 info
->flags
= FBINFO_DEFAULT
| FBINFO_CAN_FORCE_OUTPUT
;
123 info
->fbops
= &intelfb_ops
;
125 /* setup aperture base/size for vesafb takeover */
126 info
->apertures
= alloc_apertures(1);
127 if (!info
->apertures
) {
131 info
->apertures
->ranges
[0].base
= dev
->mode_config
.fb_base
;
133 info
->apertures
->ranges
[0].size
= pci_resource_len(dev
->pdev
, 2);
135 info
->apertures
->ranges
[0].size
= pci_resource_len(dev
->pdev
, 0);
137 info
->fix
.smem_start
= dev
->mode_config
.fb_base
+ obj_priv
->gtt_offset
;
138 info
->fix
.smem_len
= size
;
140 info
->screen_base
= ioremap_wc(dev
->agp
->base
+ obj_priv
->gtt_offset
,
142 if (!info
->screen_base
) {
147 ret
= fb_alloc_cmap(&info
->cmap
, 256, 0);
152 info
->screen_size
= size
;
154 // memset(info->screen_base, 0, size);
156 drm_fb_helper_fill_fix(info
, fb
->pitch
, fb
->depth
);
157 drm_fb_helper_fill_var(info
, &ifbdev
->helper
, sizes
->fb_width
, sizes
->fb_height
);
159 /* FIXME: we really shouldn't expose mmio space at all */
160 info
->fix
.mmio_start
= pci_resource_start(dev
->pdev
, mmio_bar
);
161 info
->fix
.mmio_len
= pci_resource_len(dev
->pdev
, mmio_bar
);
163 info
->pixmap
.size
= 64*1024;
164 info
->pixmap
.buf_align
= 8;
165 info
->pixmap
.access_align
= 32;
166 info
->pixmap
.flags
= FB_PIXMAP_SYSTEM
;
167 info
->pixmap
.scan_align
= 1;
169 DRM_DEBUG_KMS("allocated %dx%d fb: 0x%08x, bo %p\n",
170 fb
->width
, fb
->height
,
171 obj_priv
->gtt_offset
, fbo
);
174 mutex_unlock(&dev
->struct_mutex
);
175 vga_switcheroo_client_fb_set(dev
->pdev
, info
);
179 i915_gem_object_unpin(fbo
);
181 drm_gem_object_unreference(fbo
);
182 mutex_unlock(&dev
->struct_mutex
);
187 static int intel_fb_find_or_create_single(struct drm_fb_helper
*helper
,
188 struct drm_fb_helper_surface_size
*sizes
)
190 struct intel_fbdev
*ifbdev
= (struct intel_fbdev
*)helper
;
195 ret
= intelfb_create(ifbdev
, sizes
);
203 static struct drm_fb_helper_funcs intel_fb_helper_funcs
= {
204 .gamma_set
= intel_crtc_fb_gamma_set
,
205 .gamma_get
= intel_crtc_fb_gamma_get
,
206 .fb_probe
= intel_fb_find_or_create_single
,
209 static void intel_fbdev_destroy(struct drm_device
*dev
,
210 struct intel_fbdev
*ifbdev
)
212 struct fb_info
*info
;
213 struct intel_framebuffer
*ifb
= &ifbdev
->ifb
;
215 if (ifbdev
->helper
.fbdev
) {
216 info
= ifbdev
->helper
.fbdev
;
217 unregister_framebuffer(info
);
218 iounmap(info
->screen_base
);
220 fb_dealloc_cmap(&info
->cmap
);
221 framebuffer_release(info
);
224 drm_fb_helper_fini(&ifbdev
->helper
);
226 drm_framebuffer_cleanup(&ifb
->base
);
228 drm_gem_object_unreference_unlocked(ifb
->obj
);
233 int intel_fbdev_init(struct drm_device
*dev
)
235 struct intel_fbdev
*ifbdev
;
236 drm_i915_private_t
*dev_priv
= dev
->dev_private
;
239 ifbdev
= kzalloc(sizeof(struct intel_fbdev
), GFP_KERNEL
);
243 dev_priv
->fbdev
= ifbdev
;
244 ifbdev
->helper
.funcs
= &intel_fb_helper_funcs
;
246 ret
= drm_fb_helper_init(dev
, &ifbdev
->helper
,
254 drm_fb_helper_single_add_all_connectors(&ifbdev
->helper
);
255 drm_fb_helper_initial_config(&ifbdev
->helper
, 32);
259 void intel_fbdev_fini(struct drm_device
*dev
)
261 drm_i915_private_t
*dev_priv
= dev
->dev_private
;
262 if (!dev_priv
->fbdev
)
265 intel_fbdev_destroy(dev
, dev_priv
->fbdev
);
266 kfree(dev_priv
->fbdev
);
267 dev_priv
->fbdev
= NULL
;
269 MODULE_LICENSE("GPL and additional rights");
271 void intel_fb_output_poll_changed(struct drm_device
*dev
)
273 drm_i915_private_t
*dev_priv
= dev
->dev_private
;
274 drm_fb_helper_hotplug_event(&dev_priv
->fbdev
->helper
);