2 * Copyright (C) 2010 Francisco Jerez.
5 * Permission is hereby granted, free of charge, to any person obtaining
6 * a copy of this software and associated documentation files (the
7 * "Software"), to deal in the Software without restriction, including
8 * without limitation the rights to use, copy, modify, merge, publish,
9 * distribute, sublicense, and/or sell copies of the Software, and to
10 * permit persons to whom the Software is furnished to do so, subject to
11 * the following conditions:
13 * The above copyright notice and this permission notice (including the
14 * next paragraph) shall be included in all copies or substantial
15 * portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
20 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
21 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
22 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
23 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
28 #include "nouveau_drv.h"
29 #include "nouveau_drm.h"
32 nv30_fb_init_tile_region(struct drm_device *dev, int i, uint32_t addr,
33 uint32_t size, uint32_t pitch, uint32_t flags)
35 struct drm_nouveau_private *dev_priv = dev->dev_private;
36 struct nouveau_tile_reg *tile = &dev_priv->tile.reg[i];
38 tile->addr = addr | 1;
39 tile->limit = max(1u, addr + size) - 1;
44 nv30_fb_free_tile_region(struct drm_device *dev, int i)
46 struct drm_nouveau_private *dev_priv = dev->dev_private;
47 struct nouveau_tile_reg *tile = &dev_priv->tile.reg[i];
49 tile->addr = tile->limit = tile->pitch = 0;
53 calc_bias(struct drm_device *dev, int k, int i, int j)
55 struct drm_nouveau_private *dev_priv = dev->dev_private;
56 int b = (dev_priv->chipset > 0x30 ?
57 nv_rd32(dev, 0x122c + 0x10 * k + 0x4 * j) >> (4 * (i ^ 1)) :
60 return 2 * (b & 0x8 ? b - 0x10 : b);
64 calc_ref(struct drm_device *dev, int l, int k, int i)
68 for (j = 0; j < 4; j++) {
69 int m = (l >> (8 * i) & 0xff) + calc_bias(dev, k, i, j);
71 x |= (0x80 | clamp(m, 0, 0x1f)) << (8 * j);
78 nv30_fb_init(struct drm_device *dev)
80 struct drm_nouveau_private *dev_priv = dev->dev_private;
81 struct nouveau_fb_engine *pfb = &dev_priv->engine.fb;
84 pfb->num_tiles = NV10_PFB_TILE__SIZE;
86 /* Turn all the tiling regions off. */
87 for (i = 0; i < pfb->num_tiles; i++)
88 pfb->set_tile_region(dev, i);
90 /* Init the memory timing regs at 0x10037c/0x1003ac */
91 if (dev_priv->chipset == 0x30 ||
92 dev_priv->chipset == 0x31 ||
93 dev_priv->chipset == 0x35) {
94 /* Related to ROP count */
95 int n = (dev_priv->chipset == 0x31 ? 2 : 4);
96 int l = nv_rd32(dev, 0x1003d0);
98 for (i = 0; i < n; i++) {
99 for (j = 0; j < 3; j++)
100 nv_wr32(dev, 0x10037c + 0xc * i + 0x4 * j,
101 calc_ref(dev, l, 0, j));
103 for (j = 0; j < 2; j++)
104 nv_wr32(dev, 0x1003ac + 0x8 * i + 0x4 * j,
105 calc_ref(dev, l, 1, j));
113 nv30_fb_takedown(struct drm_device *dev)