1 #include "drmP.h"
2 #include "drm.h"
3 #include "nouveau_drv.h"
4 #include "nouveau_drm.h"
5
6 static struct drm_mm_node *
nv20_fb_alloc_tag(struct drm_device * dev,uint32_t size)7 nv20_fb_alloc_tag(struct drm_device *dev, uint32_t size)
8 {
9 struct drm_nouveau_private *dev_priv = dev->dev_private;
10 struct nouveau_fb_engine *pfb = &dev_priv->engine.fb;
11 struct drm_mm_node *mem;
12 int ret;
13
14 ret = drm_mm_pre_get(&pfb->tag_heap);
15 if (ret)
16 return NULL;
17
18 spin_lock(&dev_priv->tile.lock);
19 mem = drm_mm_search_free(&pfb->tag_heap, size, 0, 0);
20 if (mem)
21 mem = drm_mm_get_block_atomic(mem, size, 0);
22 spin_unlock(&dev_priv->tile.lock);
23
24 return mem;
25 }
26
27 static void
nv20_fb_free_tag(struct drm_device * dev,struct drm_mm_node * mem)28 nv20_fb_free_tag(struct drm_device *dev, struct drm_mm_node *mem)
29 {
30 struct drm_nouveau_private *dev_priv = dev->dev_private;
31
32 spin_lock(&dev_priv->tile.lock);
33 drm_mm_put_block(mem);
34 spin_unlock(&dev_priv->tile.lock);
35 }
36
37 void
nv10_fb_init_tile_region(struct drm_device * dev,int i,uint32_t addr,uint32_t size,uint32_t pitch,uint32_t flags)38 nv10_fb_init_tile_region(struct drm_device *dev, int i, uint32_t addr,
39 uint32_t size, uint32_t pitch, uint32_t flags)
40 {
41 struct drm_nouveau_private *dev_priv = dev->dev_private;
42 struct nouveau_tile_reg *tile = &dev_priv->tile.reg[i];
43 int bpp = (flags & NOUVEAU_GEM_TILE_32BPP ? 32 : 16);
44
45 tile->addr = addr;
46 tile->limit = max(1u, addr + size) - 1;
47 tile->pitch = pitch;
48
49 if (dev_priv->card_type == NV_20) {
50 if (flags & NOUVEAU_GEM_TILE_ZETA) {
51 /*
52 * Allocate some of the on-die tag memory,
53 * used to store Z compression meta-data (most
54 * likely just a bitmap determining if a given
55 * tile is compressed or not).
56 */
57 tile->tag_mem = nv20_fb_alloc_tag(dev, size / 256);
58
59 if (tile->tag_mem) {
60 /* Enable Z compression */
61 if (dev_priv->chipset >= 0x25)
62 tile->zcomp = tile->tag_mem->start |
63 (bpp == 16 ?
64 NV25_PFB_ZCOMP_MODE_16 :
65 NV25_PFB_ZCOMP_MODE_32);
66 else
67 tile->zcomp = tile->tag_mem->start |
68 NV20_PFB_ZCOMP_EN |
69 (bpp == 16 ? 0 :
70 NV20_PFB_ZCOMP_MODE_32);
71 }
72
73 tile->addr |= 3;
74 } else {
75 tile->addr |= 1;
76 }
77
78 } else {
79 tile->addr |= 1 << 31;
80 }
81 }
82
83 void
nv10_fb_free_tile_region(struct drm_device * dev,int i)84 nv10_fb_free_tile_region(struct drm_device *dev, int i)
85 {
86 struct drm_nouveau_private *dev_priv = dev->dev_private;
87 struct nouveau_tile_reg *tile = &dev_priv->tile.reg[i];
88
89 if (tile->tag_mem) {
90 nv20_fb_free_tag(dev, tile->tag_mem);
91 tile->tag_mem = NULL;
92 }
93
94 tile->addr = tile->limit = tile->pitch = tile->zcomp = 0;
95 }
96
97 void
nv10_fb_set_tile_region(struct drm_device * dev,int i)98 nv10_fb_set_tile_region(struct drm_device *dev, int i)
99 {
100 struct drm_nouveau_private *dev_priv = dev->dev_private;
101 struct nouveau_tile_reg *tile = &dev_priv->tile.reg[i];
102
103 nv_wr32(dev, NV10_PFB_TLIMIT(i), tile->limit);
104 nv_wr32(dev, NV10_PFB_TSIZE(i), tile->pitch);
105 nv_wr32(dev, NV10_PFB_TILE(i), tile->addr);
106
107 if (dev_priv->card_type == NV_20)
108 nv_wr32(dev, NV20_PFB_ZCOMP(i), tile->zcomp);
109 }
110
111 int
nv10_fb_init(struct drm_device * dev)112 nv10_fb_init(struct drm_device *dev)
113 {
114 struct drm_nouveau_private *dev_priv = dev->dev_private;
115 struct nouveau_fb_engine *pfb = &dev_priv->engine.fb;
116 int i;
117
118 pfb->num_tiles = NV10_PFB_TILE__SIZE;
119
120 if (dev_priv->card_type == NV_20)
121 drm_mm_init(&pfb->tag_heap, 0,
122 (dev_priv->chipset >= 0x25 ?
123 64 * 1024 : 32 * 1024));
124
125 /* Turn all the tiling regions off. */
126 for (i = 0; i < pfb->num_tiles; i++)
127 pfb->set_tile_region(dev, i);
128
129 return 0;
130 }
131
132 void
nv10_fb_takedown(struct drm_device * dev)133 nv10_fb_takedown(struct drm_device *dev)
134 {
135 struct drm_nouveau_private *dev_priv = dev->dev_private;
136 struct nouveau_fb_engine *pfb = &dev_priv->engine.fb;
137 int i;
138
139 for (i = 0; i < pfb->num_tiles; i++)
140 pfb->free_tile_region(dev, i);
141
142 if (dev_priv->card_type == NV_20)
143 drm_mm_takedown(&pfb->tag_heap);
144 }
145