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OMAPDSS: VENC: fix NULL pointer dereference in DSS2 VENC sysfs debug attr on OMAP4
[zen-stable.git] / drivers / gpu / drm / nouveau / nvc0_fbcon.c
bloba495e48197caa0d522e6e99efb30eafc03c8570a
1 /*
2 * Copyright 2010 Red Hat Inc.
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 shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 *
22 * Authors: Ben Skeggs
23 */
24
25 #include "drmP.h"
26 #include "nouveau_drv.h"
27 #include "nouveau_dma.h"
28 #include "nouveau_ramht.h"
29 #include "nouveau_fbcon.h"
30 #include "nouveau_mm.h"
31
32 int
33 nvc0_fbcon_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
34 {
35 struct nouveau_fbdev *nfbdev = info->par;
36 struct drm_device *dev = nfbdev->dev;
37 struct drm_nouveau_private *dev_priv = dev->dev_private;
38 struct nouveau_channel *chan = dev_priv->channel;
39 int ret;
40
41 ret = RING_SPACE(chan, rect->rop == ROP_COPY ? 7 : 11);
42 if (ret)
43 return ret;
44
45 if (rect->rop != ROP_COPY) {
46 BEGIN_NVC0(chan, 2, NvSub2D, 0x02ac, 1);
47 OUT_RING (chan, 1);
48 }
49 BEGIN_NVC0(chan, 2, NvSub2D, 0x0588, 1);
50 if (info->fix.visual == FB_VISUAL_TRUECOLOR ||
51 info->fix.visual == FB_VISUAL_DIRECTCOLOR)
52 OUT_RING (chan, ((uint32_t *)info->pseudo_palette)[rect->color]);
53 else
54 OUT_RING (chan, rect->color);
55 BEGIN_NVC0(chan, 2, NvSub2D, 0x0600, 4);
56 OUT_RING (chan, rect->dx);
57 OUT_RING (chan, rect->dy);
58 OUT_RING (chan, rect->dx + rect->width);
59 OUT_RING (chan, rect->dy + rect->height);
60 if (rect->rop != ROP_COPY) {
61 BEGIN_NVC0(chan, 2, NvSub2D, 0x02ac, 1);
62 OUT_RING (chan, 3);
63 }
64 FIRE_RING(chan);
65 return 0;
66 }
67
68 int
69 nvc0_fbcon_copyarea(struct fb_info *info, const struct fb_copyarea *region)
70 {
71 struct nouveau_fbdev *nfbdev = info->par;
72 struct drm_device *dev = nfbdev->dev;
73 struct drm_nouveau_private *dev_priv = dev->dev_private;
74 struct nouveau_channel *chan = dev_priv->channel;
75 int ret;
76
77 ret = RING_SPACE(chan, 12);
78 if (ret)
79 return ret;
80
81 BEGIN_NVC0(chan, 2, NvSub2D, 0x0110, 1);
82 OUT_RING (chan, 0);
83 BEGIN_NVC0(chan, 2, NvSub2D, 0x08b0, 4);
84 OUT_RING (chan, region->dx);
85 OUT_RING (chan, region->dy);
86 OUT_RING (chan, region->width);
87 OUT_RING (chan, region->height);
88 BEGIN_NVC0(chan, 2, NvSub2D, 0x08d0, 4);
89 OUT_RING (chan, 0);
90 OUT_RING (chan, region->sx);
91 OUT_RING (chan, 0);
92 OUT_RING (chan, region->sy);
93 FIRE_RING(chan);
94 return 0;
95 }
96
97 int
98 nvc0_fbcon_imageblit(struct fb_info *info, const struct fb_image *image)
99 {
100 struct nouveau_fbdev *nfbdev = info->par;
101 struct drm_device *dev = nfbdev->dev;
102 struct drm_nouveau_private *dev_priv = dev->dev_private;
103 struct nouveau_channel *chan = dev_priv->channel;
104 uint32_t width, dwords, *data = (uint32_t *)image->data;
105 uint32_t mask = ~(~0 >> (32 - info->var.bits_per_pixel));
106 uint32_t *palette = info->pseudo_palette;
107 int ret;
108
109 if (image->depth != 1)
110 return -ENODEV;
111
112 ret = RING_SPACE(chan, 11);
113 if (ret)
114 return ret;
115
116 width = ALIGN(image->width, 32);
117 dwords = (width * image->height) >> 5;
118
119 BEGIN_NVC0(chan, 2, NvSub2D, 0x0814, 2);
120 if (info->fix.visual == FB_VISUAL_TRUECOLOR ||
121 info->fix.visual == FB_VISUAL_DIRECTCOLOR) {
122 OUT_RING (chan, palette[image->bg_color] | mask);
123 OUT_RING (chan, palette[image->fg_color] | mask);
124 } else {
125 OUT_RING (chan, image->bg_color);
126 OUT_RING (chan, image->fg_color);
127 }
128 BEGIN_NVC0(chan, 2, NvSub2D, 0x0838, 2);
129 OUT_RING (chan, image->width);
130 OUT_RING (chan, image->height);
131 BEGIN_NVC0(chan, 2, NvSub2D, 0x0850, 4);
132 OUT_RING (chan, 0);
133 OUT_RING (chan, image->dx);
134 OUT_RING (chan, 0);
135 OUT_RING (chan, image->dy);
136
137 while (dwords) {
138 int push = dwords > 2047 ? 2047 : dwords;
139
140 ret = RING_SPACE(chan, push + 1);
141 if (ret)
142 return ret;
143
144 dwords -= push;
145
146 BEGIN_NVC0(chan, 6, NvSub2D, 0x0860, push);
147 OUT_RINGp(chan, data, push);
148 data += push;
149 }
150
151 FIRE_RING(chan);
152 return 0;
153 }
154
155 int
156 nvc0_fbcon_accel_init(struct fb_info *info)
157 {
158 struct nouveau_fbdev *nfbdev = info->par;
159 struct drm_device *dev = nfbdev->dev;
160 struct drm_nouveau_private *dev_priv = dev->dev_private;
161 struct nouveau_channel *chan = dev_priv->channel;
162 struct nouveau_framebuffer *fb = &nfbdev->nouveau_fb;
163 int ret, format;
164
165 ret = nouveau_gpuobj_gr_new(chan, 0x902d, 0x902d);
166 if (ret)
167 return ret;
168
169 switch (info->var.bits_per_pixel) {
170 case 8:
171 format = 0xf3;
172 break;
173 case 15:
174 format = 0xf8;
175 break;
176 case 16:
177 format = 0xe8;
178 break;
179 case 32:
180 switch (info->var.transp.length) {
181 case 0: /* depth 24 */
182 case 8: /* depth 32, just use 24.. */
183 format = 0xe6;
184 break;
185 case 2: /* depth 30 */
186 format = 0xd1;
187 break;
188 default:
189 return -EINVAL;
190 }
191 break;
192 default:
193 return -EINVAL;
194 }
195
196 ret = RING_SPACE(chan, 60);
197 if (ret) {
198 WARN_ON(1);
199 nouveau_fbcon_gpu_lockup(info);
200 return ret;
201 }
202
203 BEGIN_NVC0(chan, 2, NvSub2D, 0x0000, 1);
204 OUT_RING (chan, 0x0000902d);
205 BEGIN_NVC0(chan, 2, NvSub2D, 0x0104, 2);
206 OUT_RING (chan, upper_32_bits(chan->notifier_vma.offset));
207 OUT_RING (chan, lower_32_bits(chan->notifier_vma.offset));
208 BEGIN_NVC0(chan, 2, NvSub2D, 0x0290, 1);
209 OUT_RING (chan, 0);
210 BEGIN_NVC0(chan, 2, NvSub2D, 0x0888, 1);
211 OUT_RING (chan, 1);
212 BEGIN_NVC0(chan, 2, NvSub2D, 0x02ac, 1);
213 OUT_RING (chan, 3);
214 BEGIN_NVC0(chan, 2, NvSub2D, 0x02a0, 1);
215 OUT_RING (chan, 0x55);
216 BEGIN_NVC0(chan, 2, NvSub2D, 0x08c0, 4);
217 OUT_RING (chan, 0);
218 OUT_RING (chan, 1);
219 OUT_RING (chan, 0);
220 OUT_RING (chan, 1);
221 BEGIN_NVC0(chan, 2, NvSub2D, 0x0580, 2);
222 OUT_RING (chan, 4);
223 OUT_RING (chan, format);
224 BEGIN_NVC0(chan, 2, NvSub2D, 0x02e8, 2);
225 OUT_RING (chan, 2);
226 OUT_RING (chan, 1);
227
228 BEGIN_NVC0(chan, 2, NvSub2D, 0x0804, 1);
229 OUT_RING (chan, format);
230 BEGIN_NVC0(chan, 2, NvSub2D, 0x0800, 1);
231 OUT_RING (chan, 1);
232 BEGIN_NVC0(chan, 2, NvSub2D, 0x0808, 3);
233 OUT_RING (chan, 0);
234 OUT_RING (chan, 0);
235 OUT_RING (chan, 1);
236 BEGIN_NVC0(chan, 2, NvSub2D, 0x081c, 1);
237 OUT_RING (chan, 1);
238 BEGIN_NVC0(chan, 2, NvSub2D, 0x0840, 4);
239 OUT_RING (chan, 0);
240 OUT_RING (chan, 1);
241 OUT_RING (chan, 0);
242 OUT_RING (chan, 1);
243 BEGIN_NVC0(chan, 2, NvSub2D, 0x0200, 10);
244 OUT_RING (chan, format);
245 OUT_RING (chan, 1);
246 OUT_RING (chan, 0);
247 OUT_RING (chan, 1);
248 OUT_RING (chan, 0);
249 OUT_RING (chan, info->fix.line_length);
250 OUT_RING (chan, info->var.xres_virtual);
251 OUT_RING (chan, info->var.yres_virtual);
252 OUT_RING (chan, upper_32_bits(fb->vma.offset));
253 OUT_RING (chan, lower_32_bits(fb->vma.offset));
254 BEGIN_NVC0(chan, 2, NvSub2D, 0x0230, 10);
255 OUT_RING (chan, format);
256 OUT_RING (chan, 1);
257 OUT_RING (chan, 0);
258 OUT_RING (chan, 1);
259 OUT_RING (chan, 0);
260 OUT_RING (chan, info->fix.line_length);
261 OUT_RING (chan, info->var.xres_virtual);
262 OUT_RING (chan, info->var.yres_virtual);
263 OUT_RING (chan, upper_32_bits(fb->vma.offset));
264 OUT_RING (chan, lower_32_bits(fb->vma.offset));
265 FIRE_RING (chan);
266
267 return 0;
268 }
269