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