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 #include "priv.h" 27 #include "ram.h" 28 29 void 30 nv30_fb_tile_init(struct nvkm_fb *fb, int i, u32 addr, u32 size, u32 pitch, 31 u32 flags, struct nvkm_fb_tile *tile) 32 { 33 /* for performance, select alternate bank offset for zeta */ 34 if (!(flags & 4)) { 35 tile->addr = (0 << 4); 36 } else { 37 if (fb->func->tile.comp) /* z compression */ 38 fb->func->tile.comp(fb, i, size, flags, tile); 39 tile->addr = (1 << 4); 40 } 41 42 tile->addr |= 0x00000001; /* enable */ 43 tile->addr |= addr; 44 tile->limit = max(1u, addr + size) - 1; 45 tile->pitch = pitch; 46 } 47 48 static void 49 nv30_fb_tile_comp(struct nvkm_fb *fb, int i, u32 size, u32 flags, 50 struct nvkm_fb_tile *tile) 51 { 52 u32 tiles = DIV_ROUND_UP(size, 0x40); 53 u32 tags = round_up(tiles / fb->ram->parts, 0x40); 54 if (!nvkm_mm_head(&fb->tags.mm, 0, 1, tags, tags, 1, &tile->tag)) { 55 if (flags & 2) tile->zcomp |= 0x01000000; /* Z16 */ 56 else tile->zcomp |= 0x02000000; /* Z24S8 */ 57 tile->zcomp |= ((tile->tag->offset ) >> 6); 58 tile->zcomp |= ((tile->tag->offset + tags - 1) >> 6) << 12; 59 #ifdef __BIG_ENDIAN 60 tile->zcomp |= 0x10000000; 61 #endif 62 } 63 } 64 65 static int 66 calc_bias(struct nvkm_fb *fb, int k, int i, int j) 67 { 68 struct nvkm_device *device = fb->subdev.device; 69 int b = (device->chipset > 0x30 ? 70 nvkm_rd32(device, 0x122c + 0x10 * k + 0x4 * j) >> 71 (4 * (i ^ 1)) : 72 0) & 0xf; 73 74 return 2 * (b & 0x8 ? b - 0x10 : b); 75 } 76 77 static int 78 calc_ref(struct nvkm_fb *fb, int l, int k, int i) 79 { 80 int j, x = 0; 81 82 for (j = 0; j < 4; j++) { 83 int m = (l >> (8 * i) & 0xff) + calc_bias(fb, k, i, j); 84 85 x |= (0x80 | clamp(m, 0, 0x1f)) << (8 * j); 86 } 87 88 return x; 89 } 90 91 void 92 nv30_fb_init(struct nvkm_fb *fb) 93 { 94 struct nvkm_device *device = fb->subdev.device; 95 int i, j; 96 97 /* Init the memory timing regs at 0x10037c/0x1003ac */ 98 if (device->chipset == 0x30 || 99 device->chipset == 0x31 || 100 device->chipset == 0x35) { 101 /* Related to ROP count */ 102 int n = (device->chipset == 0x31 ? 2 : 4); 103 int l = nvkm_rd32(device, 0x1003d0); 104 105 for (i = 0; i < n; i++) { 106 for (j = 0; j < 3; j++) 107 nvkm_wr32(device, 0x10037c + 0xc * i + 0x4 * j, 108 calc_ref(fb, l, 0, j)); 109 110 for (j = 0; j < 2; j++) 111 nvkm_wr32(device, 0x1003ac + 0x8 * i + 0x4 * j, 112 calc_ref(fb, l, 1, j)); 113 } 114 } 115 } 116 117 static const struct nvkm_fb_func 118 nv30_fb = { 119 .tags = nv20_fb_tags, 120 .init = nv30_fb_init, 121 .tile.regions = 8, 122 .tile.init = nv30_fb_tile_init, 123 .tile.comp = nv30_fb_tile_comp, 124 .tile.fini = nv20_fb_tile_fini, 125 .tile.prog = nv20_fb_tile_prog, 126 .ram_new = nv20_ram_new, 127 }; 128 129 int 130 nv30_fb_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, struct nvkm_fb **pfb) 131 { 132 return nvkm_fb_new_(&nv30_fb, device, type, inst, pfb); 133 } 134