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 struct nouveau_bufbin_priv {
48 struct nouveau_bufref_priv *list;
49 int relocs;
50 };
51
52 struct nouveau_bufctx_priv {
53 struct nouveau_bufctx base;
54 struct nouveau_bufref_priv *free;
55 int nr_bins;
56 struct nouveau_bufbin_priv bins[];
57 };
58
59 static inline struct nouveau_bufctx_priv *
nouveau_bufctx(struct nouveau_bufctx * bctx)60 nouveau_bufctx(struct nouveau_bufctx *bctx)
61 {
62 return (struct nouveau_bufctx_priv *)bctx;
63 }
64
65 int
nouveau_bufctx_new(struct nouveau_client * client,int bins,struct nouveau_bufctx ** pbctx)66 nouveau_bufctx_new(struct nouveau_client *client, int bins,
67 struct nouveau_bufctx **pbctx)
68 {
69 struct nouveau_bufctx_priv *priv;
70
71 priv = calloc(1, sizeof(*priv) + sizeof(priv->bins[0]) * bins);
72 if (priv) {
73 DRMINITLISTHEAD(&priv->base.head);
74 DRMINITLISTHEAD(&priv->base.pending);
75 DRMINITLISTHEAD(&priv->base.current);
76 priv->base.client = client;
77 priv->nr_bins = bins;
78 *pbctx = &priv->base;
79 return 0;
80 }
81
82 return -ENOMEM;
83 }
84
85 void
nouveau_bufctx_del(struct nouveau_bufctx ** pbctx)86 nouveau_bufctx_del(struct nouveau_bufctx **pbctx)
87 {
88 struct nouveau_bufctx_priv *pctx = nouveau_bufctx(*pbctx);
89 struct nouveau_bufref_priv *pref;
90 if (pctx) {
91 while (pctx->nr_bins--)
92 nouveau_bufctx_reset(&pctx->base, pctx->nr_bins);
93 while ((pref = pctx->free)) {
94 pctx->free = pref->next;
95 free(pref);
96 }
97 free(pctx);
98 *pbctx = NULL;
99 }
100 }
101
102 void
nouveau_bufctx_reset(struct nouveau_bufctx * bctx,int bin)103 nouveau_bufctx_reset(struct nouveau_bufctx *bctx, int bin)
104 {
105 struct nouveau_bufctx_priv *pctx = nouveau_bufctx(bctx);
106 struct nouveau_bufbin_priv *pbin = &pctx->bins[bin];
107 struct nouveau_bufref_priv *pref;
108
109 while ((pref = pbin->list)) {
110 DRMLISTDELINIT(&pref->base.thead);
111 pbin->list = pref->next;
112 pref->next = pctx->free;
113 pctx->free = pref;
114 }
115
116 bctx->relocs -= pbin->relocs;
117 pbin->relocs = 0;
118 }
119
120 struct nouveau_bufref *
nouveau_bufctx_refn(struct nouveau_bufctx * bctx,int bin,struct nouveau_bo * bo,uint32_t flags)121 nouveau_bufctx_refn(struct nouveau_bufctx *bctx, int bin,
122 struct nouveau_bo *bo, uint32_t flags)
123 {
124 struct nouveau_bufctx_priv *pctx = nouveau_bufctx(bctx);
125 struct nouveau_bufbin_priv *pbin = &pctx->bins[bin];
126 struct nouveau_bufref_priv *pref = pctx->free;
127
128 if (!pref)
129 pref = malloc(sizeof(*pref));
130 else
131 pctx->free = pref->next;
132
133 if (pref) {
134 pref->base.bo = bo;
135 pref->base.flags = flags;
136 pref->base.packet = 0;
137
138 DRMLISTADDTAIL(&pref->base.thead, &bctx->pending);
139 pref->bufctx = bctx;
140 pref->next = pbin->list;
141 pbin->list = pref;
142 }
143
144 return &pref->base;
145 }
146
147 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)148 nouveau_bufctx_mthd(struct nouveau_bufctx *bctx, int bin, uint32_t packet,
149 struct nouveau_bo *bo, uint64_t data, uint32_t flags,
150 uint32_t vor, uint32_t tor)
151 {
152 struct nouveau_bufctx_priv *pctx = nouveau_bufctx(bctx);
153 struct nouveau_bufbin_priv *pbin = &pctx->bins[bin];
154 struct nouveau_bufref *bref = nouveau_bufctx_refn(bctx, bin, bo, flags);
155 if (bref) {
156 bref->packet = packet;
157 bref->data = data;
158 bref->vor = vor;
159 bref->tor = tor;
160 pbin->relocs++;
161 bctx->relocs++;
162 }
163 return bref;
164 }
165