include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit...
[linux-3.10.git] / drivers / gpu / drm / nouveau / nouveau_grctx.c
1 /*
2  * Copyright 2009 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 <linux/firmware.h>
26 #include <linux/slab.h>
27
28 #include "drmP.h"
29 #include "nouveau_drv.h"
30
31 struct nouveau_ctxprog {
32         uint32_t signature;
33         uint8_t  version;
34         uint16_t length;
35         uint32_t data[];
36 } __attribute__ ((packed));
37
38 struct nouveau_ctxvals {
39         uint32_t signature;
40         uint8_t  version;
41         uint32_t length;
42         struct {
43                 uint32_t offset;
44                 uint32_t value;
45         } data[];
46 } __attribute__ ((packed));
47
48 int
49 nouveau_grctx_prog_load(struct drm_device *dev)
50 {
51         struct drm_nouveau_private *dev_priv = dev->dev_private;
52         struct nouveau_pgraph_engine *pgraph = &dev_priv->engine.graph;
53         const int chipset = dev_priv->chipset;
54         const struct firmware *fw;
55         const struct nouveau_ctxprog *cp;
56         const struct nouveau_ctxvals *cv;
57         char name[32];
58         int ret, i;
59
60         if (pgraph->accel_blocked)
61                 return -ENODEV;
62
63         if (!pgraph->ctxprog) {
64                 sprintf(name, "nouveau/nv%02x.ctxprog", chipset);
65                 ret = request_firmware(&fw, name, &dev->pdev->dev);
66                 if (ret) {
67                         NV_ERROR(dev, "No ctxprog for NV%02x\n", chipset);
68                         return ret;
69                 }
70
71                 pgraph->ctxprog = kmalloc(fw->size, GFP_KERNEL);
72                 if (!pgraph->ctxprog) {
73                         NV_ERROR(dev, "OOM copying ctxprog\n");
74                         release_firmware(fw);
75                         return -ENOMEM;
76                 }
77                 memcpy(pgraph->ctxprog, fw->data, fw->size);
78
79                 cp = pgraph->ctxprog;
80                 if (le32_to_cpu(cp->signature) != 0x5043564e ||
81                     cp->version != 0 ||
82                     le16_to_cpu(cp->length) != ((fw->size - 7) / 4)) {
83                         NV_ERROR(dev, "ctxprog invalid\n");
84                         release_firmware(fw);
85                         nouveau_grctx_fini(dev);
86                         return -EINVAL;
87                 }
88                 release_firmware(fw);
89         }
90
91         if (!pgraph->ctxvals) {
92                 sprintf(name, "nouveau/nv%02x.ctxvals", chipset);
93                 ret = request_firmware(&fw, name, &dev->pdev->dev);
94                 if (ret) {
95                         NV_ERROR(dev, "No ctxvals for NV%02x\n", chipset);
96                         nouveau_grctx_fini(dev);
97                         return ret;
98                 }
99
100                 pgraph->ctxvals = kmalloc(fw->size, GFP_KERNEL);
101                 if (!pgraph->ctxvals) {
102                         NV_ERROR(dev, "OOM copying ctxvals\n");
103                         release_firmware(fw);
104                         nouveau_grctx_fini(dev);
105                         return -ENOMEM;
106                 }
107                 memcpy(pgraph->ctxvals, fw->data, fw->size);
108
109                 cv = (void *)pgraph->ctxvals;
110                 if (le32_to_cpu(cv->signature) != 0x5643564e ||
111                     cv->version != 0 ||
112                     le32_to_cpu(cv->length) != ((fw->size - 9) / 8)) {
113                         NV_ERROR(dev, "ctxvals invalid\n");
114                         release_firmware(fw);
115                         nouveau_grctx_fini(dev);
116                         return -EINVAL;
117                 }
118                 release_firmware(fw);
119         }
120
121         cp = pgraph->ctxprog;
122
123         nv_wr32(dev, NV40_PGRAPH_CTXCTL_UCODE_INDEX, 0);
124         for (i = 0; i < le16_to_cpu(cp->length); i++)
125                 nv_wr32(dev, NV40_PGRAPH_CTXCTL_UCODE_DATA,
126                         le32_to_cpu(cp->data[i]));
127
128         return 0;
129 }
130
131 void
132 nouveau_grctx_fini(struct drm_device *dev)
133 {
134         struct drm_nouveau_private *dev_priv = dev->dev_private;
135         struct nouveau_pgraph_engine *pgraph = &dev_priv->engine.graph;
136
137         if (pgraph->ctxprog) {
138                 kfree(pgraph->ctxprog);
139                 pgraph->ctxprog = NULL;
140         }
141
142         if (pgraph->ctxvals) {
143                 kfree(pgraph->ctxprog);
144                 pgraph->ctxvals = NULL;
145         }
146 }
147
148 void
149 nouveau_grctx_vals_load(struct drm_device *dev, struct nouveau_gpuobj *ctx)
150 {
151         struct drm_nouveau_private *dev_priv = dev->dev_private;
152         struct nouveau_pgraph_engine *pgraph = &dev_priv->engine.graph;
153         struct nouveau_ctxvals *cv = pgraph->ctxvals;
154         int i;
155
156         if (!cv)
157                 return;
158
159         for (i = 0; i < le32_to_cpu(cv->length); i++)
160                 nv_wo32(dev, ctx, le32_to_cpu(cv->data[i].offset),
161                         le32_to_cpu(cv->data[i].value));
162 }