1/* 2 * Copyright (C) 2010 Francisco Jerez. 3 * All Rights Reserved. 4 * 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: 12 * 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. 16 * 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. 24 * 25 */ 26 27#include "drmP.h" 28#include "drm.h" 29#include "nouveau_drv.h" 30#include "nouveau_drm.h" 31 32static int 33calc_bias(struct drm_device *dev, int k, int i, int j) 34{ 35 struct drm_nouveau_private *dev_priv = dev->dev_private; 36 int b = (dev_priv->chipset > 0x30 ? 37 nv_rd32(dev, 0x122c + 0x10 * k + 0x4 * j) >> (4 * (i ^ 1)) : 38 0) & 0xf; 39 40 return 2 * (b & 0x8 ? b - 0x10 : b); 41} 42 43static int 44calc_ref(struct drm_device *dev, int l, int k, int i) 45{ 46 int j, x = 0; 47 48 for (j = 0; j < 4; j++) { 49 int m = (l >> (8 * i) & 0xff) + calc_bias(dev, k, i, j); 50 51 x |= (0x80 | clamp(m, 0, 0x1f)) << (8 * j); 52 } 53 54 return x; 55} 56 57int 58nv30_fb_init(struct drm_device *dev) 59{ 60 struct drm_nouveau_private *dev_priv = dev->dev_private; 61 struct nouveau_fb_engine *pfb = &dev_priv->engine.fb; 62 int i, j; 63 64 pfb->num_tiles = NV10_PFB_TILE__SIZE; 65 66 /* Turn all the tiling regions off. */ 67 for (i = 0; i < pfb->num_tiles; i++) 68 pfb->set_region_tiling(dev, i, 0, 0, 0); 69 70 /* Init the memory timing regs at 0x10037c/0x1003ac */ 71 if (dev_priv->chipset == 0x30 || 72 dev_priv->chipset == 0x31 || 73 dev_priv->chipset == 0x35) { 74 /* Related to ROP count */ 75 int n = (dev_priv->chipset == 0x31 ? 2 : 4); 76 int l = nv_rd32(dev, 0x1003d0); 77 78 for (i = 0; i < n; i++) { 79 for (j = 0; j < 3; j++) 80 nv_wr32(dev, 0x10037c + 0xc * i + 0x4 * j, 81 calc_ref(dev, l, 0, j)); 82 83 for (j = 0; j < 2; j++) 84 nv_wr32(dev, 0x1003ac + 0x8 * i + 0x4 * j, 85 calc_ref(dev, l, 1, j)); 86 } 87 } 88 89 return 0; 90} 91 92void 93nv30_fb_takedown(struct drm_device *dev) 94{ 95} 96