radeon_fb.c revision 282199 
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: stable/10/sys/dev/drm2/radeon/radeon_fb.c 282199 2015-04-28 19:35:05Z dumbbell $");
29
30#include <machine/_inttypes.h>
31
32#include <dev/drm2/drmP.h>
33#include <dev/drm2/drm_crtc.h>
34#include <dev/drm2/drm_crtc_helper.h>
35#include <dev/drm2/radeon/radeon_drm.h>
36#include "radeon.h"
37
38#include <dev/drm2/drm_fb_helper.h>
39
40/* object hierarchy -
41   this contains a helper + a radeon fb
42   the helper contains a pointer to radeon framebuffer baseclass.
43*/
44struct radeon_fbdev {
45	struct drm_fb_helper helper;
46	struct radeon_framebuffer rfb;
47	struct list_head fbdev_list;
48	struct radeon_device *rdev;
49};
50
51#if defined(__linux__)
52static struct fb_ops radeonfb_ops = {
53	.owner = THIS_MODULE,
54	.fb_check_var = drm_fb_helper_check_var,
55	.fb_set_par = drm_fb_helper_set_par,
56	.fb_fillrect = cfb_fillrect,
57	.fb_copyarea = cfb_copyarea,
58	.fb_imageblit = cfb_imageblit,
59	.fb_pan_display = drm_fb_helper_pan_display,
60	.fb_blank = drm_fb_helper_blank,
61	.fb_setcmap = drm_fb_helper_setcmap,
62	.fb_debug_enter = drm_fb_helper_debug_enter,
63	.fb_debug_leave = drm_fb_helper_debug_leave,
64};
65#endif
66
67
68int radeon_align_pitch(struct radeon_device *rdev, int width, int bpp, bool tiled)
69{
70	int aligned = width;
71	int align_large = (ASIC_IS_AVIVO(rdev)) || tiled;
72	int pitch_mask = 0;
73
74	switch (bpp / 8) {
75	case 1:
76		pitch_mask = align_large ? 255 : 127;
77		break;
78	case 2:
79		pitch_mask = align_large ? 127 : 31;
80		break;
81	case 3:
82	case 4:
83		pitch_mask = align_large ? 63 : 15;
84		break;
85	}
86
87	aligned += pitch_mask;
88	aligned &= ~pitch_mask;
89	return aligned;
90}
91
92static void radeonfb_destroy_pinned_object(struct drm_gem_object *gobj)
93{
94	struct radeon_bo *rbo = gem_to_radeon_bo(gobj);
95	int ret;
96
97	ret = radeon_bo_reserve(rbo, false);
98	if (likely(ret == 0)) {
99		radeon_bo_kunmap(rbo);
100		radeon_bo_unpin(rbo);
101		radeon_bo_unreserve(rbo);
102	}
103	drm_gem_object_unreference_unlocked(gobj);
104}
105
106static int radeonfb_create_pinned_object(struct radeon_fbdev *rfbdev,
107					 struct drm_mode_fb_cmd2 *mode_cmd,
108					 struct drm_gem_object **gobj_p)
109{
110	struct radeon_device *rdev = rfbdev->rdev;
111	struct drm_gem_object *gobj = NULL;
112	struct radeon_bo *rbo = NULL;
113	bool fb_tiled = false; /* useful for testing */
114	u32 tiling_flags = 0;
115	int ret;
116	int aligned_size, size;
117	int height = mode_cmd->height;
118	u32 bpp, depth;
119
120	drm_fb_get_bpp_depth(mode_cmd->pixel_format, &depth, &bpp);
121
122	/* need to align pitch with crtc limits */
123	mode_cmd->pitches[0] = radeon_align_pitch(rdev, mode_cmd->width, bpp,
124						  fb_tiled) * ((bpp + 1) / 8);
125
126	if (rdev->family >= CHIP_R600)
127		height = roundup2(mode_cmd->height, 8);
128	size = mode_cmd->pitches[0] * height;
129	aligned_size = roundup2(size, PAGE_SIZE);
130	ret = radeon_gem_object_create(rdev, aligned_size, 0,
131				       RADEON_GEM_DOMAIN_VRAM,
132				       false, true,
133				       &gobj);
134	if (ret) {
135		DRM_ERROR("failed to allocate framebuffer (%d)\n",
136		       aligned_size);
137		return -ENOMEM;
138	}
139	rbo = gem_to_radeon_bo(gobj);
140
141	if (fb_tiled)
142		tiling_flags = RADEON_TILING_MACRO;
143
144#ifdef __BIG_ENDIAN
145	switch (bpp) {
146	case 32:
147		tiling_flags |= RADEON_TILING_SWAP_32BIT;
148		break;
149	case 16:
150		tiling_flags |= RADEON_TILING_SWAP_16BIT;
151	default:
152		break;
153	}
154#endif
155
156	if (tiling_flags) {
157		ret = radeon_bo_set_tiling_flags(rbo,
158						 tiling_flags | RADEON_TILING_SURFACE,
159						 mode_cmd->pitches[0]);
160		if (ret)
161			dev_err(rdev->dev, "FB failed to set tiling flags\n");
162	}
163
164
165	ret = radeon_bo_reserve(rbo, false);
166	if (unlikely(ret != 0))
167		goto out_unref;
168	/* Only 27 bit offset for legacy CRTC */
169	ret = radeon_bo_pin_restricted(rbo, RADEON_GEM_DOMAIN_VRAM,
170				       ASIC_IS_AVIVO(rdev) ? 0 : 1 << 27,
171				       NULL);
172	if (ret) {
173		radeon_bo_unreserve(rbo);
174		goto out_unref;
175	}
176	if (fb_tiled)
177		radeon_bo_check_tiling(rbo, 0, 0);
178	ret = radeon_bo_kmap(rbo, NULL);
179	radeon_bo_unreserve(rbo);
180	if (ret) {
181		goto out_unref;
182	}
183
184	*gobj_p = gobj;
185	return 0;
186out_unref:
187	radeonfb_destroy_pinned_object(gobj);
188	*gobj_p = NULL;
189	return ret;
190}
191
192static int radeonfb_create(struct radeon_fbdev *rfbdev,
193			   struct drm_fb_helper_surface_size *sizes)
194{
195	struct radeon_device *rdev = rfbdev->rdev;
196	struct fb_info *info;
197	struct drm_framebuffer *fb = NULL;
198	struct drm_mode_fb_cmd2 mode_cmd;
199	struct drm_gem_object *gobj = NULL;
200	struct radeon_bo *rbo = NULL;
201	int ret;
202	unsigned long tmp;
203
204	mode_cmd.width = sizes->surface_width;
205	mode_cmd.height = sizes->surface_height;
206
207	/* avivo can't scanout real 24bpp */
208	if ((sizes->surface_bpp == 24) && ASIC_IS_AVIVO(rdev))
209		sizes->surface_bpp = 32;
210
211	mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
212							  sizes->surface_depth);
213
214	ret = radeonfb_create_pinned_object(rfbdev, &mode_cmd, &gobj);
215	if (ret) {
216		DRM_ERROR("failed to create fbcon object %d\n", ret);
217		return ret;
218	}
219
220	rbo = gem_to_radeon_bo(gobj);
221
222	/* okay we have an object now allocate the framebuffer */
223	info = framebuffer_alloc();
224	if (info == NULL) {
225		ret = -ENOMEM;
226		goto out_unref;
227	}
228
229	ret = radeon_framebuffer_init(rdev->ddev, &rfbdev->rfb, &mode_cmd, gobj);
230	if (ret) {
231		DRM_ERROR("failed to initalise framebuffer %d\n", ret);
232		goto out_unref;
233	}
234
235	fb = &rfbdev->rfb.base;
236
237	/* setup helper */
238	rfbdev->helper.fb = fb;
239	rfbdev->helper.fbdev = info;
240
241	memset(rbo->kptr, 0x0, radeon_bo_size(rbo));
242
243	drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth);
244
245	tmp = radeon_bo_gpu_offset(rbo) - rdev->mc.vram_start;
246	info->fb_size  = radeon_bo_size(rbo);
247	info->fb_bpp = sizes->surface_bpp;
248	info->fb_pbase = rdev->mc.aper_base + tmp;
249	info->fb_vbase = (vm_offset_t)rbo->kptr;
250
251	drm_fb_helper_fill_var(info, &rfbdev->helper, sizes->fb_width, sizes->fb_height);
252
253	DRM_INFO("fb mappable at 0x%" PRIXPTR "\n",  info->fb_pbase);
254	DRM_INFO("vram apper at 0x%lX\n",  (unsigned long)rdev->mc.aper_base);
255	DRM_INFO("size %lu\n", (unsigned long)radeon_bo_size(rbo));
256	DRM_INFO("fb depth is %d\n", fb->depth);
257	DRM_INFO("   pitch is %d\n", fb->pitches[0]);
258
259	return 0;
260
261out_unref:
262	if (rbo) {
263		/* TODO? dumbbell@ */
264	}
265	if (fb && ret) {
266		drm_gem_object_unreference(gobj);
267		drm_framebuffer_cleanup(fb);
268		free(fb, DRM_MEM_DRIVER); /* XXX malloc'd in radeon_user_framebuffer_create? */
269	}
270	return ret;
271}
272
273static int radeon_fb_find_or_create_single(struct drm_fb_helper *helper,
274					   struct drm_fb_helper_surface_size *sizes)
275{
276	struct radeon_fbdev *rfbdev = (struct radeon_fbdev *)helper;
277	int new_fb = 0;
278	int ret;
279
280	if (!helper->fb) {
281		ret = radeonfb_create(rfbdev, sizes);
282		if (ret)
283			return ret;
284		new_fb = 1;
285	}
286	return new_fb;
287}
288
289void radeon_fb_output_poll_changed(struct radeon_device *rdev)
290{
291	drm_fb_helper_hotplug_event(&rdev->mode_info.rfbdev->helper);
292}
293
294static int radeon_fbdev_destroy(struct drm_device *dev, struct radeon_fbdev *rfbdev)
295{
296	struct fb_info *info;
297	struct radeon_framebuffer *rfb = &rfbdev->rfb;
298
299	if (rfbdev->helper.fbdev) {
300		info = rfbdev->helper.fbdev;
301		framebuffer_release(info);
302	}
303
304	if (rfb->obj) {
305		radeonfb_destroy_pinned_object(rfb->obj);
306		rfb->obj = NULL;
307	}
308	drm_fb_helper_fini(&rfbdev->helper);
309	drm_framebuffer_cleanup(&rfb->base);
310
311	return 0;
312}
313
314static struct drm_fb_helper_funcs radeon_fb_helper_funcs = {
315	.gamma_set = radeon_crtc_fb_gamma_set,
316	.gamma_get = radeon_crtc_fb_gamma_get,
317	.fb_probe = radeon_fb_find_or_create_single,
318};
319
320int radeon_fbdev_init(struct radeon_device *rdev)
321{
322	struct radeon_fbdev *rfbdev;
323	int bpp_sel = 32;
324	int ret;
325
326	/* select 8 bpp console on RN50 or 16MB cards */
327	if (ASIC_IS_RN50(rdev) || rdev->mc.real_vram_size <= (32*1024*1024))
328		bpp_sel = 8;
329
330	rfbdev = malloc(sizeof(struct radeon_fbdev),
331	    DRM_MEM_DRIVER, M_NOWAIT | M_ZERO);
332	if (!rfbdev)
333		return -ENOMEM;
334
335	rfbdev->rdev = rdev;
336	rdev->mode_info.rfbdev = rfbdev;
337	rfbdev->helper.funcs = &radeon_fb_helper_funcs;
338
339	ret = drm_fb_helper_init(rdev->ddev, &rfbdev->helper,
340				 rdev->num_crtc,
341				 RADEONFB_CONN_LIMIT);
342	if (ret) {
343		free(rfbdev, DRM_MEM_DRIVER);
344		return ret;
345	}
346
347	drm_fb_helper_single_add_all_connectors(&rfbdev->helper);
348	drm_fb_helper_initial_config(&rfbdev->helper, bpp_sel);
349	return 0;
350}
351
352void radeon_fbdev_fini(struct radeon_device *rdev)
353{
354	if (!rdev->mode_info.rfbdev)
355		return;
356
357	radeon_fbdev_destroy(rdev->ddev, rdev->mode_info.rfbdev);
358	free(rdev->mode_info.rfbdev, DRM_MEM_DRIVER);
359	rdev->mode_info.rfbdev = NULL;
360}
361
362void radeon_fbdev_set_suspend(struct radeon_device *rdev, int state)
363{
364#ifdef FREEBSD_WIP
365	fb_set_suspend(rdev->mode_info.rfbdev->helper.fbdev, state);
366#endif /* FREEBSD_WIP */
367}
368
369int radeon_fbdev_total_size(struct radeon_device *rdev)
370{
371	struct radeon_bo *robj;
372	int size = 0;
373
374	robj = gem_to_radeon_bo(rdev->mode_info.rfbdev->rfb.obj);
375	size += radeon_bo_size(robj);
376	return size;
377}
378
379bool radeon_fbdev_robj_is_fb(struct radeon_device *rdev, struct radeon_bo *robj)
380{
381	if (robj == gem_to_radeon_bo(rdev->mode_info.rfbdev->rfb.obj))
382		return true;
383	return false;
384}
385
386struct fb_info *
387radeon_fb_helper_getinfo(device_t kdev)
388{
389	struct drm_device *dev;
390	struct radeon_device *rdev;
391	struct radeon_fbdev *rfbdev;
392	struct fb_info *info;
393
394	dev = device_get_softc(kdev);
395	rdev = dev->dev_private;
396	rfbdev = rdev->mode_info.rfbdev;
397	if (rfbdev == NULL)
398		return (NULL);
399
400	info = rfbdev->helper.fbdev;
401
402	return (info);
403}
404