1 /* 2 * Copyright 2012 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 23 */ 24 25 #ifdef HAVE_CONFIG_H 26 #include <config.h> 27 #endif 28 29 #include <stdio.h> 30 #include <stdlib.h> 31 #include <stdint.h> 32 #include <stdbool.h> 33 #include <assert.h> 34 #include <errno.h> 35 36 #include "libdrm_lists.h" 37 38 #include "nouveau.h" 39 #include "private.h" 40 41 struct nouveau_bufref_priv { 42 struct nouveau_bufref base; 43 struct nouveau_bufref_priv *next; 44 struct nouveau_bufctx *bufctx; 45 }; 46 47 static inline struct nouveau_bufref_priv * 48 nouveau_bufref(struct nouveau_bufref *bctx) 49 { 50 return (struct nouveau_bufref_priv *)bctx; 51 } 52 53 struct nouveau_bufbin_priv { 54 struct nouveau_bufref_priv *list; 55 int relocs; 56 }; 57 58 struct nouveau_bufctx_priv { 59 struct nouveau_bufctx base; 60 struct nouveau_bufref_priv *free; 61 int nr_bins; 62 struct nouveau_bufbin_priv bins[]; 63 }; 64 65 static inline struct nouveau_bufctx_priv * 66 nouveau_bufctx(struct nouveau_bufctx *bctx) 67 { 68 return (struct nouveau_bufctx_priv *)bctx; 69 } 70 71 drm_public int 72 nouveau_bufctx_new(struct nouveau_client *client, int bins, 73 struct nouveau_bufctx **pbctx) 74 { 75 struct nouveau_bufctx_priv *priv; 76 77 priv = calloc(1, sizeof(*priv) + sizeof(priv->bins[0]) * bins); 78 if (priv) { 79 DRMINITLISTHEAD(&priv->base.head); 80 DRMINITLISTHEAD(&priv->base.pending); 81 DRMINITLISTHEAD(&priv->base.current); 82 priv->base.client = client; 83 priv->nr_bins = bins; 84 *pbctx = &priv->base; 85 return 0; 86 } 87 88 return -ENOMEM; 89 } 90 91 drm_public void 92 nouveau_bufctx_del(struct nouveau_bufctx **pbctx) 93 { 94 struct nouveau_bufctx_priv *pctx = nouveau_bufctx(*pbctx); 95 struct nouveau_bufref_priv *pref; 96 if (pctx) { 97 while (pctx->nr_bins--) 98 nouveau_bufctx_reset(&pctx->base, pctx->nr_bins); 99 while ((pref = pctx->free)) { 100 pctx->free = pref->next; 101 free(pref); 102 } 103 free(pctx); 104 *pbctx = NULL; 105 } 106 } 107 108 drm_public void 109 nouveau_bufctx_reset(struct nouveau_bufctx *bctx, int bin) 110 { 111 struct nouveau_bufctx_priv *pctx = nouveau_bufctx(bctx); 112 struct nouveau_bufbin_priv *pbin = &pctx->bins[bin]; 113 struct nouveau_bufref_priv *pref; 114 115 while ((pref = pbin->list)) { 116 DRMLISTDELINIT(&pref->base.thead); 117 pbin->list = pref->next; 118 pref->next = pctx->free; 119 pctx->free = pref; 120 } 121 122 bctx->relocs -= pbin->relocs; 123 pbin->relocs = 0; 124 } 125 126 drm_public struct nouveau_bufref * 127 nouveau_bufctx_refn(struct nouveau_bufctx *bctx, int bin, 128 struct nouveau_bo *bo, uint32_t flags) 129 { 130 struct nouveau_bufctx_priv *pctx = nouveau_bufctx(bctx); 131 struct nouveau_bufbin_priv *pbin = &pctx->bins[bin]; 132 struct nouveau_bufref_priv *pref = pctx->free; 133 134 if (!pref) 135 pref = malloc(sizeof(*pref)); 136 else 137 pctx->free = pref->next; 138 139 if (pref) { 140 pref->base.bo = bo; 141 pref->base.flags = flags; 142 pref->base.packet = 0; 143 144 DRMLISTADDTAIL(&pref->base.thead, &bctx->pending); 145 pref->bufctx = bctx; 146 pref->next = pbin->list; 147 pbin->list = pref; 148 } 149 150 return &pref->base; 151 } 152 153 drm_public struct nouveau_bufref * 154 nouveau_bufctx_mthd(struct nouveau_bufctx *bctx, int bin, uint32_t packet, 155 struct nouveau_bo *bo, uint64_t data, uint32_t flags, 156 uint32_t vor, uint32_t tor) 157 { 158 struct nouveau_bufctx_priv *pctx = nouveau_bufctx(bctx); 159 struct nouveau_bufbin_priv *pbin = &pctx->bins[bin]; 160 struct nouveau_bufref *bref = nouveau_bufctx_refn(bctx, bin, bo, flags); 161 if (bref) { 162 bref->packet = packet; 163 bref->data = data; 164 bref->vor = vor; 165 bref->tor = tor; 166 pbin->relocs++; 167 bctx->relocs++; 168 } 169 return bref; 170 } 171