Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
[pandora-kernel.git] / drivers / gpu / drm / nouveau / nv04_instmem.c
1 #include "drmP.h"
2 #include "drm.h"
3 #include "nouveau_drv.h"
4
5 /* returns the size of fifo context */
6 static int
7 nouveau_fifo_ctx_size(struct drm_device *dev)
8 {
9         struct drm_nouveau_private *dev_priv = dev->dev_private;
10
11         if (dev_priv->chipset >= 0x40)
12                 return 128;
13         else
14         if (dev_priv->chipset >= 0x17)
15                 return 64;
16
17         return 32;
18 }
19
20 static void
21 nv04_instmem_determine_amount(struct drm_device *dev)
22 {
23         struct drm_nouveau_private *dev_priv = dev->dev_private;
24         int i;
25
26         /* Figure out how much instance memory we need */
27         if (dev_priv->card_type >= NV_40) {
28                 /* We'll want more instance memory than this on some NV4x cards.
29                  * There's a 16MB aperture to play with that maps onto the end
30                  * of vram.  For now, only reserve a small piece until we know
31                  * more about what each chipset requires.
32                  */
33                 switch (dev_priv->chipset) {
34                 case 0x40:
35                 case 0x47:
36                 case 0x49:
37                 case 0x4b:
38                         dev_priv->ramin_rsvd_vram = (2 * 1024 * 1024);
39                         break;
40                 default:
41                         dev_priv->ramin_rsvd_vram = (1 * 1024 * 1024);
42                         break;
43                 }
44         } else {
45                 /*XXX: what *are* the limits on <NV40 cards?
46                  */
47                 dev_priv->ramin_rsvd_vram = (512 * 1024);
48         }
49         NV_DEBUG(dev, "RAMIN size: %dKiB\n", dev_priv->ramin_rsvd_vram >> 10);
50
51         /* Clear all of it, except the BIOS image that's in the first 64KiB */
52         for (i = 64 * 1024; i < dev_priv->ramin_rsvd_vram; i += 4)
53                 nv_wi32(dev, i, 0x00000000);
54 }
55
56 static void
57 nv04_instmem_configure_fixed_tables(struct drm_device *dev)
58 {
59         struct drm_nouveau_private *dev_priv = dev->dev_private;
60         struct nouveau_engine *engine = &dev_priv->engine;
61
62         /* FIFO hash table (RAMHT)
63          *   use 4k hash table at RAMIN+0x10000
64          *   TODO: extend the hash table
65          */
66         dev_priv->ramht_offset = 0x10000;
67         dev_priv->ramht_bits   = 9;
68         dev_priv->ramht_size   = (1 << dev_priv->ramht_bits); /* nr entries */
69         dev_priv->ramht_size  *= 8; /* 2 32-bit values per entry in RAMHT */
70         NV_DEBUG(dev, "RAMHT offset=0x%x, size=%d\n", dev_priv->ramht_offset,
71                                                       dev_priv->ramht_size);
72
73         /* FIFO runout table (RAMRO) - 512k at 0x11200 */
74         dev_priv->ramro_offset = 0x11200;
75         dev_priv->ramro_size   = 512;
76         NV_DEBUG(dev, "RAMRO offset=0x%x, size=%d\n", dev_priv->ramro_offset,
77                                                       dev_priv->ramro_size);
78
79         /* FIFO context table (RAMFC)
80          *   NV40  : Not sure exactly how to position RAMFC on some cards,
81          *           0x30002 seems to position it at RAMIN+0x20000 on these
82          *           cards.  RAMFC is 4kb (32 fifos, 128byte entries).
83          *   Others: Position RAMFC at RAMIN+0x11400
84          */
85         dev_priv->ramfc_size = engine->fifo.channels *
86                                                 nouveau_fifo_ctx_size(dev);
87         switch (dev_priv->card_type) {
88         case NV_40:
89                 dev_priv->ramfc_offset = 0x20000;
90                 break;
91         case NV_30:
92         case NV_20:
93         case NV_10:
94         case NV_04:
95         default:
96                 dev_priv->ramfc_offset = 0x11400;
97                 break;
98         }
99         NV_DEBUG(dev, "RAMFC offset=0x%x, size=%d\n", dev_priv->ramfc_offset,
100                                                       dev_priv->ramfc_size);
101 }
102
103 int nv04_instmem_init(struct drm_device *dev)
104 {
105         struct drm_nouveau_private *dev_priv = dev->dev_private;
106         uint32_t offset;
107         int ret;
108
109         nv04_instmem_determine_amount(dev);
110         nv04_instmem_configure_fixed_tables(dev);
111
112         /* Create a heap to manage RAMIN allocations, we don't allocate
113          * the space that was reserved for RAMHT/FC/RO.
114          */
115         offset = dev_priv->ramfc_offset + dev_priv->ramfc_size;
116
117         /* It appears RAMRO (or something?) is controlled by 0x2220/0x2230
118          * on certain NV4x chipsets as well as RAMFC.  When 0x2230 == 0
119          * ("new style" control) the upper 16-bits of 0x2220 points at this
120          * other mysterious table that's clobbering important things.
121          *
122          * We're now pointing this at RAMIN+0x30000 to avoid RAMFC getting
123          * smashed to pieces on us, so reserve 0x30000-0x40000 too..
124          */
125         if (dev_priv->card_type >= NV_40) {
126                 if (offset < 0x40000)
127                         offset = 0x40000;
128         }
129
130         ret = drm_mm_init(&dev_priv->ramin_heap, offset,
131                           dev_priv->ramin_rsvd_vram - offset);
132         if (ret) {
133                 NV_ERROR(dev, "Failed to init RAMIN heap: %d\n", ret);
134                 return ret;
135         }
136
137         return 0;
138 }
139
140 void
141 nv04_instmem_takedown(struct drm_device *dev)
142 {
143 }
144
145 int
146 nv04_instmem_populate(struct drm_device *dev, struct nouveau_gpuobj *gpuobj, uint32_t *sz)
147 {
148         if (gpuobj->im_backing)
149                 return -EINVAL;
150
151         return 0;
152 }
153
154 void
155 nv04_instmem_clear(struct drm_device *dev, struct nouveau_gpuobj *gpuobj)
156 {
157         struct drm_nouveau_private *dev_priv = dev->dev_private;
158
159         if (gpuobj && gpuobj->im_backing) {
160                 if (gpuobj->im_bound)
161                         dev_priv->engine.instmem.unbind(dev, gpuobj);
162                 gpuobj->im_backing = NULL;
163         }
164 }
165
166 int
167 nv04_instmem_bind(struct drm_device *dev, struct nouveau_gpuobj *gpuobj)
168 {
169         if (!gpuobj->im_pramin || gpuobj->im_bound)
170                 return -EINVAL;
171
172         gpuobj->im_bound = 1;
173         return 0;
174 }
175
176 int
177 nv04_instmem_unbind(struct drm_device *dev, struct nouveau_gpuobj *gpuobj)
178 {
179         if (gpuobj->im_bound == 0)
180                 return -EINVAL;
181
182         gpuobj->im_bound = 0;
183         return 0;
184 }
185
186 void
187 nv04_instmem_flush(struct drm_device *dev)
188 {
189 }
190
191 int
192 nv04_instmem_suspend(struct drm_device *dev)
193 {
194         return 0;
195 }
196
197 void
198 nv04_instmem_resume(struct drm_device *dev)
199 {
200 }
201