1 /*-
2 * Copyright (c) 2014 Marcel Moolenaar
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
29
30 #include <sys/types.h>
31 #include <errno.h>
32
33 #include "bus.h"
34 #include "busdma.h"
35 #include "libbus.h"
36
37 int16_t
bus_read_1(int rid,long ofs)38 bus_read_1(int rid, long ofs)
39 {
40 uint8_t val;
41
42 return ((!bs_read(rid, ofs, &val, sizeof(val))) ? -1 : (int)val);
43 }
44
45 int32_t
bus_read_2(int rid,long ofs)46 bus_read_2(int rid, long ofs)
47 {
48 uint16_t val;
49
50 return ((!bs_read(rid, ofs, &val, sizeof(val))) ? -1 : (int)val);
51 }
52
53 int64_t
bus_read_4(int rid,long ofs)54 bus_read_4(int rid, long ofs)
55 {
56 uint32_t val;
57
58 return ((!bs_read(rid, ofs, &val, sizeof(val))) ? -1 : (int64_t)val);
59 }
60
61 int
bus_write_1(int rid,long ofs,uint8_t val)62 bus_write_1(int rid, long ofs, uint8_t val)
63 {
64
65 return ((!bs_write(rid, ofs, &val, sizeof(val))) ? errno : 0);
66 }
67
68 int
bus_write_2(int rid,long ofs,uint16_t val)69 bus_write_2(int rid, long ofs, uint16_t val)
70 {
71
72 return ((!bs_write(rid, ofs, &val, sizeof(val))) ? errno : 0);
73 }
74
75 int
bus_write_4(int rid,long ofs,uint32_t val)76 bus_write_4(int rid, long ofs, uint32_t val)
77 {
78
79 return ((!bs_write(rid, ofs, &val, sizeof(val))) ? errno : 0);
80 }
81
82 int
bus_map(const char * dev,const char * resource)83 bus_map(const char *dev, const char *resource)
84 {
85
86 return (bs_map(dev, resource));
87 }
88
89 int
bus_unmap(int rid)90 bus_unmap(int rid)
91 {
92
93 return ((!bs_unmap(rid)) ? errno : 0);
94 }
95
96 int
bus_subregion(int rid,long ofs,long sz)97 bus_subregion(int rid, long ofs, long sz)
98 {
99
100 return (bs_subregion(rid, ofs, sz));
101 }
102
103 int
busdma_tag_create(const char * dev,bus_addr_t align,bus_addr_t bndry,bus_addr_t maxaddr,bus_size_t maxsz,u_int nsegs,bus_size_t maxsegsz,u_int datarate,u_int flags,busdma_tag_t * out_p)104 busdma_tag_create(const char *dev, bus_addr_t align, bus_addr_t bndry,
105 bus_addr_t maxaddr, bus_size_t maxsz, u_int nsegs, bus_size_t maxsegsz,
106 u_int datarate, u_int flags, busdma_tag_t *out_p)
107 {
108 int res;
109
110 res = bd_tag_create(dev, align, bndry, maxaddr, maxsz, nsegs, maxsegsz,
111 datarate, flags);
112 if (res == -1)
113 return (errno);
114 *out_p = res;
115 return (0);
116 }
117
118 int
busdma_tag_derive(busdma_tag_t tag,bus_addr_t align,bus_addr_t bndry,bus_addr_t maxaddr,bus_size_t maxsz,u_int nsegs,bus_size_t maxsegsz,u_int datarate,u_int flags,busdma_tag_t * out_p)119 busdma_tag_derive(busdma_tag_t tag, bus_addr_t align, bus_addr_t bndry,
120 bus_addr_t maxaddr, bus_size_t maxsz, u_int nsegs, bus_size_t maxsegsz,
121 u_int datarate, u_int flags, busdma_tag_t *out_p)
122 {
123 int res;
124
125 res = bd_tag_derive(tag, align, bndry, maxaddr, maxsz, nsegs, maxsegsz,
126 datarate, flags);
127 if (res == -1)
128 return (errno);
129 *out_p = res;
130 return (0);
131 }
132
133 int
busdma_tag_destroy(busdma_tag_t tag)134 busdma_tag_destroy(busdma_tag_t tag)
135 {
136
137 return (bd_tag_destroy(tag));
138 }
139
140 int
busdma_mem_alloc(busdma_tag_t tag,u_int flags,busdma_md_t * out_p)141 busdma_mem_alloc(busdma_tag_t tag, u_int flags, busdma_md_t *out_p)
142 {
143 int res;
144
145 res = bd_mem_alloc(tag, flags);
146 if (res == -1)
147 return (errno);
148 *out_p = res;
149 return (0);
150 }
151
152 int
busdma_mem_free(busdma_md_t md)153 busdma_mem_free(busdma_md_t md)
154 {
155
156 return (bd_mem_free(md));
157 }
158
159 int
busdma_md_create(busdma_tag_t tag,u_int flags,busdma_md_t * out_p)160 busdma_md_create(busdma_tag_t tag, u_int flags, busdma_md_t *out_p)
161 {
162 int res;
163
164 res = bd_md_create(tag, flags);
165 if (res == -1)
166 return (errno);
167 *out_p = res;
168 return (0);
169 }
170
171 int
busdma_md_destroy(busdma_md_t md)172 busdma_md_destroy(busdma_md_t md)
173 {
174
175 return (bd_md_destroy(md));
176 }
177
178 int
busdma_md_load(busdma_md_t md,void * buf,size_t len,u_int flags)179 busdma_md_load(busdma_md_t md, void *buf, size_t len, u_int flags)
180 {
181
182 return (bd_md_load(md, buf, len, flags));
183 }
184
185 int
busdma_md_unload(busdma_md_t md)186 busdma_md_unload(busdma_md_t md)
187 {
188
189 return (bd_md_unload(md));
190 }
191
192 busdma_seg_t
busdma_md_first_seg(busdma_md_t md,int space)193 busdma_md_first_seg(busdma_md_t md, int space)
194 {
195 busdma_seg_t seg;
196
197 seg = bd_md_first_seg(md, space);
198 return (seg);
199 }
200
201 busdma_seg_t
busdma_md_next_seg(busdma_md_t md,busdma_seg_t seg)202 busdma_md_next_seg(busdma_md_t md, busdma_seg_t seg)
203 {
204
205 seg = bd_md_next_seg(md, seg);
206 return (seg);
207 }
208
209 bus_addr_t
busdma_seg_get_addr(busdma_seg_t seg)210 busdma_seg_get_addr(busdma_seg_t seg)
211 {
212 u_long addr;
213 int error;
214
215 error = bd_seg_get_addr(seg, &addr);
216 return ((error) ? ~0UL : addr);
217 }
218
219 bus_size_t
busdma_seg_get_size(busdma_seg_t seg)220 busdma_seg_get_size(busdma_seg_t seg)
221 {
222 u_long size;
223 int error;
224
225 error = bd_seg_get_size(seg, &size);
226 return ((error) ? ~0UL : size);
227 }
228
229 int
busdma_sync(busdma_md_t md,int op)230 busdma_sync(busdma_md_t md, int op)
231 {
232
233 return (bd_sync(md, op, 0UL, ~0UL));
234 }
235
236 int
busdma_sync_range(busdma_md_t md,int op,bus_size_t ofs,bus_size_t len)237 busdma_sync_range(busdma_md_t md, int op, bus_size_t ofs, bus_size_t len)
238 {
239
240 return (bd_sync(md, op, ofs, len));
241 }
242