1/* 2 * Copyright 2014 Red Hat Inc. 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice shall be included in 12 * all copies or substantial portions of the Software. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 20 * OTHER DEALINGS IN THE SOFTWARE. 21 * 22 * Authors: Ben Skeggs <bskeggs@redhat.com> 23 */ 24 25#include "priv.h" 26 27static int 28nvkm_ltc_tags_alloc(struct nouveau_ltc *ltc, u32 n, 29 struct nouveau_mm_node **pnode) 30{ 31 struct nvkm_ltc_priv *priv = (void *)ltc; 32 int ret; 33 34 ret = nouveau_mm_head(&priv->tags, 0, 1, n, n, 1, pnode); 35 if (ret) 36 *pnode = NULL; 37 38 return ret; 39} 40 41static void 42nvkm_ltc_tags_free(struct nouveau_ltc *ltc, struct nouveau_mm_node **pnode) 43{ 44 struct nvkm_ltc_priv *priv = (void *)ltc; 45 nouveau_mm_free(&priv->tags, pnode); 46} 47 48static void 49nvkm_ltc_tags_clear(struct nouveau_ltc *ltc, u32 first, u32 count) 50{ 51 const struct nvkm_ltc_impl *impl = (void *)nv_oclass(ltc); 52 struct nvkm_ltc_priv *priv = (void *)ltc; 53 const u32 limit = first + count - 1; 54 55 BUG_ON((first > limit) || (limit >= priv->num_tags)); 56 57 impl->cbc_clear(priv, first, limit); 58 impl->cbc_wait(priv); 59} 60 61static int 62nvkm_ltc_zbc_color_get(struct nouveau_ltc *ltc, int index, const u32 color[4]) 63{ 64 const struct nvkm_ltc_impl *impl = (void *)nv_oclass(ltc); 65 struct nvkm_ltc_priv *priv = (void *)ltc; 66 memcpy(priv->zbc_color[index], color, sizeof(priv->zbc_color[index])); 67 impl->zbc_clear_color(priv, index, color); 68 return index; 69} 70 71static int 72nvkm_ltc_zbc_depth_get(struct nouveau_ltc *ltc, int index, const u32 depth) 73{ 74 const struct nvkm_ltc_impl *impl = (void *)nv_oclass(ltc); 75 struct nvkm_ltc_priv *priv = (void *)ltc; 76 priv->zbc_depth[index] = depth; 77 impl->zbc_clear_depth(priv, index, depth); 78 return index; 79} 80 81int 82_nvkm_ltc_init(struct nouveau_object *object) 83{ 84 const struct nvkm_ltc_impl *impl = (void *)nv_oclass(object); 85 struct nvkm_ltc_priv *priv = (void *)object; 86 int ret, i; 87 88 ret = nouveau_subdev_init(&priv->base.base); 89 if (ret) 90 return ret; 91 92 for (i = priv->base.zbc_min; i <= priv->base.zbc_max; i++) { 93 impl->zbc_clear_color(priv, i, priv->zbc_color[i]); 94 impl->zbc_clear_depth(priv, i, priv->zbc_depth[i]); 95 } 96 97 return 0; 98} 99 100int 101nvkm_ltc_create_(struct nouveau_object *parent, struct nouveau_object *engine, 102 struct nouveau_oclass *oclass, int length, void **pobject) 103{ 104 const struct nvkm_ltc_impl *impl = (void *)oclass; 105 struct nvkm_ltc_priv *priv; 106 int ret; 107 108 ret = nouveau_subdev_create_(parent, engine, oclass, 0, "PLTCG", 109 "l2c", length, pobject); 110 priv = *pobject; 111 if (ret) 112 return ret; 113 114 memset(priv->zbc_color, 0x00, sizeof(priv->zbc_color)); 115 memset(priv->zbc_depth, 0x00, sizeof(priv->zbc_depth)); 116 117 priv->base.base.intr = impl->intr; 118 priv->base.tags_alloc = nvkm_ltc_tags_alloc; 119 priv->base.tags_free = nvkm_ltc_tags_free; 120 priv->base.tags_clear = nvkm_ltc_tags_clear; 121 priv->base.zbc_min = 1; /* reserve 0 for disabled */ 122 priv->base.zbc_max = min(impl->zbc, NOUVEAU_LTC_MAX_ZBC_CNT) - 1; 123 priv->base.zbc_color_get = nvkm_ltc_zbc_color_get; 124 priv->base.zbc_depth_get = nvkm_ltc_zbc_depth_get; 125 return 0; 126} 127