2 * uqmi -- tiny QMI support implementation
4 * Copyright (C) 2014-2015 Felix Fietkau <nbd@openwrt.org>
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the
18 * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
19 * Boston, MA 02110-1301 USA.
28 #include "qmi-errors.h"
29 #include "qmi-errors.c"
31 bool cancel_all_requests
= false;
33 #define __qmi_service(_n) [__##_n] = _n
34 static const uint8_t qmi_services
[__QMI_SERVICE_LAST
] = {
45 void dump_packet(const char *prefix
, void *ptr
, int len
)
47 unsigned char *data
= ptr
;
50 fprintf(stderr
, "%s:", prefix
);
51 for (i
= 0; i
< len
; i
++)
52 fprintf(stderr
, " %02x", data
[i
]);
53 fprintf(stderr
, "\n");
58 qmi_get_service_idx(QmiService svc
)
62 for (i
= 0; i
< ARRAY_SIZE(qmi_services
); i
++)
63 if (qmi_services
[i
] == svc
)
69 static void __qmi_request_complete(struct qmi_dev
*qmi
, struct qmi_request
*req
, struct qmi_msg
*msg
)
81 tlv_buf
= qmi_msg_get_tlv_buf(msg
, &tlv_len
);
82 req
->ret
= qmi_check_message_status(tlv_buf
, tlv_len
);
86 req
->ret
= QMI_ERROR_CANCELLED
;
89 if (req
->cb
&& (msg
|| !req
->no_error_cb
))
90 req
->cb(qmi
, req
, msg
);
93 *req
->complete
= true;
94 uloop_cancelled
= true;
98 static void qmi_process_msg(struct qmi_dev
*qmi
, struct qmi_msg
*msg
)
100 struct qmi_request
*req
;
103 if (msg
->qmux
.service
== QMI_SERVICE_CTL
)
104 tid
= msg
->ctl
.transaction
;
106 tid
= le16_to_cpu(msg
->svc
.transaction
);
108 list_for_each_entry(req
, &qmi
->req
, list
) {
109 if (req
->service
!= msg
->qmux
.service
)
115 __qmi_request_complete(qmi
, req
, msg
);
120 static void qmi_notify_read(struct ustream
*us
, int bytes
)
122 struct qmi_dev
*qmi
= container_of(us
, struct qmi_dev
, sf
.stream
);
128 buf
= ustream_get_read_buf(us
, &len
);
132 if (len
< offsetof(struct qmi_msg
, flags
))
135 msg
= (struct qmi_msg
*) buf
;
136 msg_len
= le16_to_cpu(msg
->qmux
.len
) + 1;
140 dump_packet("Received packet", msg
, msg_len
);
141 qmi_process_msg(qmi
, msg
);
142 ustream_consume(us
, msg_len
);
146 int qmi_request_start(struct qmi_dev
*qmi
, struct qmi_request
*req
, struct qmi_msg
*msg
, request_cb cb
)
148 int len
= qmi_complete_request_message(msg
);
151 memset(req
, 0, sizeof(*req
));
153 req
->service
= msg
->qmux
.service
;
154 if (req
->service
== QMI_SERVICE_CTL
) {
155 tid
= qmi
->ctl_tid
++;
156 msg
->ctl
.transaction
= tid
;
158 int idx
= qmi_get_service_idx(req
->service
);
163 tid
= qmi
->service_data
[idx
].tid
++;
164 msg
->svc
.transaction
= cpu_to_le16(tid
);
165 msg
->qmux
.client
= qmi
->service_data
[idx
].client_id
;
171 list_add(&req
->list
, &qmi
->req
);
173 dump_packet("Send packet", msg
, len
);
174 ustream_write(&qmi
->sf
.stream
, (void *) msg
, len
, false);
178 void qmi_request_cancel(struct qmi_dev
*qmi
, struct qmi_request
*req
)
181 __qmi_request_complete(qmi
, req
, NULL
);
184 int qmi_request_wait(struct qmi_dev
*qmi
, struct qmi_request
*req
)
186 bool complete
= false;
193 *req
->complete
= true;
195 req
->complete
= &complete
;
197 cancelled
= uloop_cancelled
;
198 uloop_cancelled
= false;
201 if (cancel_all_requests
)
202 qmi_request_cancel(qmi
, req
);
204 uloop_cancelled
= cancelled
;
207 if (req
->complete
== &complete
)
208 req
->complete
= NULL
;
213 struct qmi_connect_request
{
214 struct qmi_request req
;
218 static void qmi_connect_service_cb(struct qmi_dev
*qmi
, struct qmi_request
*req
, struct qmi_msg
*msg
)
220 struct qmi_ctl_allocate_cid_response res
;
221 struct qmi_connect_request
*creq
= container_of(req
, struct qmi_connect_request
, req
);
226 qmi_parse_ctl_allocate_cid_response(msg
, &res
);
227 creq
->cid
= res
.data
.allocation_info
.cid
;
230 int qmi_service_connect(struct qmi_dev
*qmi
, QmiService svc
, int client_id
)
232 struct qmi_ctl_allocate_cid_request creq
= {
233 QMI_INIT(service
, svc
)
235 struct qmi_connect_request req
;
236 int idx
= qmi_get_service_idx(svc
);
237 struct qmi_msg
*msg
= &msgbuf
.msg
;
242 if (qmi
->service_connected
& (1 << idx
))
246 qmi_set_ctl_allocate_cid_request(msg
, &creq
);
247 qmi_request_start(qmi
, &req
.req
, msg
, qmi_connect_service_cb
);
248 qmi_request_wait(qmi
, &req
.req
);
255 qmi
->service_keep_cid
|= (1 << idx
);
258 qmi
->service_data
[idx
].connected
= true;
259 qmi
->service_data
[idx
].client_id
= client_id
;
260 qmi
->service_data
[idx
].tid
= 1;
261 qmi
->service_connected
|= (1 << idx
);
266 static void __qmi_service_disconnect(struct qmi_dev
*qmi
, int idx
)
268 int client_id
= qmi
->service_data
[idx
].client_id
;
269 struct qmi_ctl_release_cid_request creq
= {
270 QMI_INIT_SEQUENCE(release_info
,
271 .service
= qmi_services
[idx
],
275 struct qmi_request req
;
276 struct qmi_msg
*msg
= &msgbuf
.msg
;
278 qmi
->service_connected
&= ~(1 << idx
);
279 qmi
->service_data
[idx
].client_id
= -1;
280 qmi
->service_data
[idx
].tid
= 0;
282 qmi_set_ctl_release_cid_request(msg
, &creq
);
283 qmi_request_start(qmi
, &req
, msg
, NULL
);
284 qmi_request_wait(qmi
, &req
);
287 int qmi_service_release_client_id(struct qmi_dev
*qmi
, QmiService svc
)
289 int idx
= qmi_get_service_idx(svc
);
290 qmi
->service_release_cid
|= 1 << idx
;
294 static void qmi_close_all_services(struct qmi_dev
*qmi
)
296 uint32_t connected
= qmi
->service_connected
;
299 qmi
->service_keep_cid
&= ~qmi
->service_release_cid
;
300 for (idx
= 0; connected
; idx
++, connected
>>= 1) {
301 if (!(connected
& 1))
304 if (qmi
->service_keep_cid
& (1 << idx
))
307 __qmi_service_disconnect(qmi
, idx
);
311 int qmi_service_get_client_id(struct qmi_dev
*qmi
, QmiService svc
)
313 int idx
= qmi_get_service_idx(svc
);
318 qmi
->service_keep_cid
|= (1 << idx
);
319 return qmi
->service_data
[idx
].client_id
;
322 int qmi_device_open(struct qmi_dev
*qmi
, const char *path
)
324 struct ustream
*us
= &qmi
->sf
.stream
;
329 fd
= open(path
, O_RDWR
| O_EXCL
| O_NONBLOCK
| O_NOCTTY
);
333 us
->notify_read
= qmi_notify_read
;
334 ustream_fd_init(&qmi
->sf
, fd
);
335 INIT_LIST_HEAD(&qmi
->req
);
341 void qmi_device_close(struct qmi_dev
*qmi
)
343 struct qmi_request
*req
;
345 qmi_close_all_services(qmi
);
346 ustream_free(&qmi
->sf
.stream
);
347 close(qmi
->sf
.fd
.fd
);
349 while (!list_empty(&qmi
->req
)) {
350 req
= list_first_entry(&qmi
->req
, struct qmi_request
, list
);
351 qmi_request_cancel(qmi
, req
);
355 QmiService
qmi_service_get_by_name(const char *str
)
357 static const struct {
361 { "dms", QMI_SERVICE_DMS
},
362 { "nas", QMI_SERVICE_NAS
},
363 { "pds", QMI_SERVICE_PDS
},
364 { "wds", QMI_SERVICE_WDS
},
365 { "wms", QMI_SERVICE_WMS
},
366 { "wda", QMI_SERVICE_WDA
},
370 for (i
= 0; i
< ARRAY_SIZE(services
); i
++) {
371 if (!strcasecmp(str
, services
[i
].name
))
372 return services
[i
].svc
;
378 const char *qmi_get_error_str(int code
)
382 for (i
= 0; i
< ARRAY_SIZE(qmi_errors
); i
++) {
383 if (qmi_errors
[i
].code
== code
)
384 return qmi_errors
[i
].text
;
387 return "Unknown error";