ath - Basic re-port, base code compile
[dragonfly.git] / sys / dev / netif / ath / ath / if_ath_alq.c
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1/*-
2 * Copyright (c) 2012 Adrian Chadd
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 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer,
10 * without modification.
11 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
12 * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
13 * redistribution must be conditioned upon including a substantially
14 * similar Disclaimer requirement for further binary redistribution.
15 *
16 * NO WARRANTY
17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
19 * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
20 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
21 * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
22 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
25 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
26 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
27 * THE POSSIBILITY OF SUCH DAMAGES.
28 *
29 * $FreeBSD$
30 */
31#include "opt_ah.h"
32#include "opt_ath.h"
33
34#include <sys/param.h>
35#include <sys/systm.h>
36#include <sys/kernel.h>
37#include <sys/module.h>
38#include <sys/sysctl.h>
39#include <sys/bus.h>
40#include <sys/malloc.h>
41#include <sys/proc.h>
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42#include <sys/lock.h>
43#include <sys/mutex.h>
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44#include <sys/endian.h>
45#include <sys/time.h>
46
5cd80a8c 47#include <dev/netif/ath/ath/if_ath_alq.h>
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48
49#ifdef ATH_DEBUG_ALQ
50static struct ale *
51if_ath_alq_get(struct if_ath_alq *alq, int len)
52{
53 struct ale *ale;
54
55 if (alq->sc_alq_isactive == 0)
56 return (NULL);
57
58 ale = alq_getn(alq->sc_alq_alq, len, ALQ_NOWAIT);
59 if (! ale)
60 alq->sc_alq_numlost++;
61 return (ale);
62}
63
64void
65if_ath_alq_init(struct if_ath_alq *alq, const char *devname)
66{
67
68 bzero(alq, sizeof(*alq));
69
70 strncpy(alq->sc_alq_devname, devname, ATH_ALQ_DEVNAME_LEN);
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71 kprintf("%s (%s): attached\n", __func__, alq->sc_alq_devname);
72 ksnprintf(alq->sc_alq_filename, ATH_ALQ_FILENAME_LEN,
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73 "/tmp/ath_%s_alq.log", alq->sc_alq_devname);
74
75 /* XXX too conservative, right? */
76 alq->sc_alq_qsize = (64*1024);
77}
78
79void
80if_ath_alq_setcfg(struct if_ath_alq *alq, uint32_t macVer,
81 uint32_t macRev, uint32_t phyRev, uint32_t halMagic)
82{
83
84 /* Store these in network order */
85 alq->sc_alq_cfg.sc_mac_version = htobe32(macVer);
86 alq->sc_alq_cfg.sc_mac_revision = htobe32(macRev);
87 alq->sc_alq_cfg.sc_phy_rev = htobe32(phyRev);
88 alq->sc_alq_cfg.sc_hal_magic = htobe32(halMagic);
89}
90
91void
92if_ath_alq_tidyup(struct if_ath_alq *alq)
93{
94
95 if_ath_alq_stop(alq);
3133c5e3 96 kprintf("%s (%s): detached\n", __func__, alq->sc_alq_devname);
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97 bzero(alq, sizeof(*alq));
98}
99
100int
101if_ath_alq_start(struct if_ath_alq *alq)
102{
103 int error;
104
105 if (alq->sc_alq_isactive)
106 return (0);
107
108 /*
109 * Create a variable-length ALQ.
110 */
111 error = alq_open(&alq->sc_alq_alq, alq->sc_alq_filename,
112 curthread->td_ucred, ALQ_DEFAULT_CMODE,
113 alq->sc_alq_qsize, 0);
114
115 if (error != 0) {
3133c5e3 116 kprintf("%s (%s): failed, err=%d\n", __func__,
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117 alq->sc_alq_devname, error);
118 } else {
3133c5e3 119 kprintf("%s (%s): opened\n", __func__, alq->sc_alq_devname);
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120 alq->sc_alq_isactive = 1;
121 if_ath_alq_post(alq, ATH_ALQ_INIT_STATE,
122 sizeof (struct if_ath_alq_init_state),
123 (char *) &alq->sc_alq_cfg);
124 }
125 return (error);
126}
127
128int
129if_ath_alq_stop(struct if_ath_alq *alq)
130{
131
132 if (alq->sc_alq_isactive == 0)
133 return (0);
134
3133c5e3 135 kprintf("%s (%s): closed\n", __func__, alq->sc_alq_devname);
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136
137 alq->sc_alq_isactive = 0;
138 alq_close(alq->sc_alq_alq);
139 alq->sc_alq_alq = NULL;
140
141 return (0);
142}
143
144/*
145 * Post a debug message to the ALQ.
146 *
147 * "len" is the size of the buf payload in bytes.
148 */
149void
150if_ath_alq_post(struct if_ath_alq *alq, uint16_t op, uint16_t len,
151 const char *buf)
152{
153 struct if_ath_alq_hdr *ap;
154 struct ale *ale;
155 struct timeval tv;
156
157 if (! if_ath_alq_checkdebug(alq, op))
158 return;
159
160 microtime(&tv);
161
162 /*
163 * Enforce some semblence of sanity on 'len'.
164 * Although strictly speaking, any length is possible -
165 * just be conservative so things don't get out of hand.
166 */
167 if (len > ATH_ALQ_PAYLOAD_LEN)
168 len = ATH_ALQ_PAYLOAD_LEN;
169
170 ale = if_ath_alq_get(alq, len + sizeof(struct if_ath_alq_hdr));
171
172 if (ale == NULL)
173 return;
174
175 ap = (struct if_ath_alq_hdr *) ale->ae_data;
176 ap->threadid = htobe64((uint64_t) curthread->td_tid);
177 ap->tstamp_sec = htobe32((uint32_t) tv.tv_sec);
178 ap->tstamp_usec = htobe32((uint32_t) tv.tv_usec);
179 ap->op = htobe16(op);
180 ap->len = htobe16(len);
181
182 /*
183 * Copy the payload _after_ the header field.
184 */
185 if (buf != NULL) {
186 memcpy(((char *) ap) + sizeof(struct if_ath_alq_hdr),
187 buf,
188 len);
189 }
190
191 alq_post(alq->sc_alq_alq, ale);
192}
193#endif /* ATH_DEBUG */