intel_fb.c revision 280183 
1/*
2 * Copyright �� 2007 David Airlie
3 *
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:
10 *
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
13 * Software.
14 *
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.
22 *
23 * Authors:
24 *     David Airlie
25 */
26
27#include <sys/cdefs.h>
28__FBSDID("$FreeBSD: head/sys/dev/drm2/i915/intel_fb.c 280183 2015-03-17 18:50:33Z dumbbell $");
29
30#include "opt_syscons.h"
31#include <dev/drm2/drmP.h>
32#include <dev/drm2/drm.h>
33#include <dev/drm2/drm_crtc.h>
34#include <dev/drm2/drm_fb_helper.h>
35#include <dev/drm2/i915/i915_drm.h>
36#include <dev/drm2/i915/i915_drv.h>
37#include <dev/drm2/i915/intel_drv.h>
38
39static int intelfb_create(struct intel_fbdev *ifbdev,
40			  struct drm_fb_helper_surface_size *sizes)
41{
42	struct drm_device *dev = ifbdev->helper.dev;
43#if 0
44	struct drm_i915_private *dev_priv = dev->dev_private;
45#endif
46	struct fb_info *info;
47	struct drm_framebuffer *fb;
48	struct drm_mode_fb_cmd2 mode_cmd;
49	struct drm_i915_gem_object *obj;
50	int size, ret;
51
52	/* we don't do packed 24bpp */
53	if (sizes->surface_bpp == 24)
54		sizes->surface_bpp = 32;
55
56	mode_cmd.width = sizes->surface_width;
57	mode_cmd.height = sizes->surface_height;
58
59	mode_cmd.pitches[0] = roundup2(mode_cmd.width * ((sizes->surface_bpp + 7) /
60							 8), 64);
61	mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
62							  sizes->surface_depth);
63
64	size = mode_cmd.pitches[0] * mode_cmd.height;
65	size = roundup2(size, PAGE_SIZE);
66	obj = i915_gem_alloc_object(dev, size);
67	if (!obj) {
68		DRM_ERROR("failed to allocate framebuffer\n");
69		ret = -ENOMEM;
70		goto out;
71	}
72
73	DRM_LOCK(dev);
74
75	/* Flush everything out, we'll be doing GTT only from now on */
76	ret = intel_pin_and_fence_fb_obj(dev, obj, NULL);
77	if (ret) {
78		DRM_ERROR("failed to pin fb: %d\n", ret);
79		goto out_unref;
80	}
81
82	info = framebuffer_alloc();
83	if (!info) {
84		ret = -ENOMEM;
85		goto out_unpin;
86	}
87
88#if 0
89	info->par = ifbdev;
90#else
91	info->fb_size = size;
92	info->fb_bpp = sizes->surface_bpp;
93	info->fb_pbase = dev->agp->base + obj->gtt_offset;
94	info->fb_vbase = (vm_offset_t)pmap_mapdev_attr(info->fb_pbase, size,
95	    PAT_WRITE_COMBINING);
96
97#endif
98
99	ret = intel_framebuffer_init(dev, &ifbdev->ifb, &mode_cmd, obj);
100	if (ret)
101		goto out_unpin;
102
103	fb = &ifbdev->ifb.base;
104
105	ifbdev->helper.fb = fb;
106	ifbdev->helper.fbdev = info;
107#if 0
108
109	strcpy(info->fix.id, "inteldrmfb");
110
111	info->flags = FBINFO_DEFAULT | FBINFO_CAN_FORCE_OUTPUT;
112	info->fbops = &intelfb_ops;
113
114	ret = fb_alloc_cmap(&info->cmap, 256, 0);
115	if (ret) {
116		ret = -ENOMEM;
117		goto out_unpin;
118	}
119	/* setup aperture base/size for vesafb takeover */
120	info->apertures = alloc_apertures(1);
121	if (!info->apertures) {
122		ret = -ENOMEM;
123		goto out_unpin;
124	}
125	info->apertures->ranges[0].base = dev->mode_config.fb_base;
126	info->apertures->ranges[0].size =
127		dev_priv->mm.gtt->gtt_mappable_entries << PAGE_SHIFT;
128
129	info->fix.smem_start = dev->mode_config.fb_base + obj->gtt_offset;
130	info->fix.smem_len = size;
131
132	info->screen_base = ioremap_wc(dev->agp->base + obj->gtt_offset, size);
133	if (!info->screen_base) {
134		ret = -ENOSPC;
135		goto out_unpin;
136	}
137	info->screen_size = size;
138
139//	memset(info->screen_base, 0, size);
140#endif
141
142	drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth);
143	drm_fb_helper_fill_var(info, &ifbdev->helper, sizes->fb_width, sizes->fb_height);
144
145	/* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
146	DRM_DEBUG_KMS("allocated %dx%d (s %dbits) fb: 0x%08x, bo %p\n",
147		      fb->width, fb->height, fb->depth,
148		      obj->gtt_offset, obj);
149
150	DRM_UNLOCK(dev);
151#if 1
152	KIB_NOTYET();
153#else
154	vga_switcheroo_client_fb_set(dev->pdev, info);
155#endif
156	return 0;
157
158out_unpin:
159	i915_gem_object_unpin(obj);
160out_unref:
161	drm_gem_object_unreference(&obj->base);
162	DRM_UNLOCK(dev);
163out:
164	return ret;
165}
166
167static int intel_fb_find_or_create_single(struct drm_fb_helper *helper,
168					  struct drm_fb_helper_surface_size *sizes)
169{
170	struct intel_fbdev *ifbdev = (struct intel_fbdev *)helper;
171	int new_fb = 0;
172	int ret;
173
174	if (!helper->fb) {
175		ret = intelfb_create(ifbdev, sizes);
176		if (ret)
177			return ret;
178		new_fb = 1;
179	}
180	return new_fb;
181}
182
183static struct drm_fb_helper_funcs intel_fb_helper_funcs = {
184	.gamma_set = intel_crtc_fb_gamma_set,
185	.gamma_get = intel_crtc_fb_gamma_get,
186	.fb_probe = intel_fb_find_or_create_single,
187};
188
189static void intel_fbdev_destroy(struct drm_device *dev,
190				struct intel_fbdev *ifbdev)
191{
192	struct fb_info *info;
193	struct intel_framebuffer *ifb = &ifbdev->ifb;
194
195	if (ifbdev->helper.fbdev) {
196		info = ifbdev->helper.fbdev;
197#if 0
198		unregister_framebuffer(info);
199		iounmap(info->screen_base);
200		if (info->cmap.len)
201			fb_dealloc_cmap(&info->cmap);
202#endif
203		framebuffer_release(info);
204	}
205
206	drm_fb_helper_fini(&ifbdev->helper);
207
208	drm_framebuffer_cleanup(&ifb->base);
209	if (ifb->obj) {
210		drm_gem_object_unreference_unlocked(&ifb->obj->base);
211		ifb->obj = NULL;
212	}
213}
214
215#ifdef DEV_SC
216extern int sc_txtmouse_no_retrace_wait;
217#endif
218
219int intel_fbdev_init(struct drm_device *dev)
220{
221	struct intel_fbdev *ifbdev;
222	drm_i915_private_t *dev_priv = dev->dev_private;
223	int ret;
224
225	ifbdev = malloc(sizeof(struct intel_fbdev), DRM_MEM_KMS,
226	    M_WAITOK | M_ZERO);
227
228	dev_priv->fbdev = ifbdev;
229	ifbdev->helper.funcs = &intel_fb_helper_funcs;
230
231	ret = drm_fb_helper_init(dev, &ifbdev->helper,
232				 dev_priv->num_pipe,
233				 INTELFB_CONN_LIMIT);
234	if (ret) {
235		free(ifbdev, DRM_MEM_KMS);
236		return ret;
237	}
238
239	drm_fb_helper_single_add_all_connectors(&ifbdev->helper);
240	drm_fb_helper_initial_config(&ifbdev->helper, 32);
241#ifdef DEV_SC
242	sc_txtmouse_no_retrace_wait = 1;
243#endif
244	return 0;
245}
246
247void intel_fbdev_fini(struct drm_device *dev)
248{
249	drm_i915_private_t *dev_priv = dev->dev_private;
250	if (!dev_priv->fbdev)
251		return;
252
253	intel_fbdev_destroy(dev, dev_priv->fbdev);
254	free(dev_priv->fbdev, DRM_MEM_KMS);
255	dev_priv->fbdev = NULL;
256}
257
258void intel_fb_output_poll_changed(struct drm_device *dev)
259{
260	drm_i915_private_t *dev_priv = dev->dev_private;
261	drm_fb_helper_hotplug_event(&dev_priv->fbdev->helper);
262}
263
264void intel_fb_restore_mode(struct drm_device *dev)
265{
266	int ret;
267	drm_i915_private_t *dev_priv = dev->dev_private;
268	struct drm_mode_config *config = &dev->mode_config;
269	struct drm_plane *plane;
270
271	sx_xlock(&dev->mode_config.mutex);
272
273	ret = drm_fb_helper_restore_fbdev_mode(&dev_priv->fbdev->helper);
274	if (ret)
275		DRM_DEBUG("failed to restore crtc mode\n");
276
277	/* Be sure to shut off any planes that may be active */
278	list_for_each_entry(plane, &config->plane_list, head)
279		plane->funcs->disable_plane(plane);
280
281	sx_xunlock(&dev->mode_config.mutex);
282}
283