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"
32 bool cancel_all_requests
= false;
34 #define __qmi_service(_n) [__##_n] = _n
35 static const uint8_t qmi_services
[__QMI_SERVICE_LAST
] = {
41 struct mbim_command_message mbim
;
49 void dump_packet(const char *prefix
, void *ptr
, int len
)
51 unsigned char *data
= ptr
;
54 fprintf(stderr
, "%s:", prefix
);
55 for (i
= 0; i
< len
; i
++)
56 fprintf(stderr
, " %02x", data
[i
]);
57 fprintf(stderr
, "\n");
62 qmi_get_service_idx(QmiService svc
)
66 for (i
= 0; i
< ARRAY_SIZE(qmi_services
); i
++)
67 if (qmi_services
[i
] == svc
)
73 static void __qmi_request_complete(struct qmi_dev
*qmi
, struct qmi_request
*req
, struct qmi_msg
*msg
)
85 tlv_buf
= qmi_msg_get_tlv_buf(msg
, &tlv_len
);
86 req
->ret
= qmi_check_message_status(tlv_buf
, tlv_len
);
90 req
->ret
= QMI_ERROR_CANCELLED
;
93 if (req
->cb
&& (msg
|| !req
->no_error_cb
))
94 req
->cb(qmi
, req
, msg
);
97 *req
->complete
= true;
98 uloop_cancelled
= true;
102 static void qmi_process_msg(struct qmi_dev
*qmi
, struct qmi_msg
*msg
)
104 struct qmi_request
*req
;
107 if (msg
->qmux
.service
== QMI_SERVICE_CTL
)
108 tid
= msg
->ctl
.transaction
;
110 tid
= le16_to_cpu(msg
->svc
.transaction
);
112 list_for_each_entry(req
, &qmi
->req
, list
) {
113 if (req
->service
!= msg
->qmux
.service
)
119 __qmi_request_complete(qmi
, req
, msg
);
124 static void qmi_notify_read(struct ustream
*us
, int bytes
)
126 struct qmi_dev
*qmi
= container_of(us
, struct qmi_dev
, sf
.stream
);
133 buf
= ustream_get_read_buf(us
, &len
);
137 dump_packet("Received packet", buf
, len
);
139 struct mbim_command_message
*mbim
= (void *) buf
;
141 if (len
< sizeof(*mbim
))
143 msg
= (struct qmi_msg
*) (buf
+ sizeof(*mbim
));
144 msg_len
= le32_to_cpu(mbim
->header
.length
);
145 if (!is_mbim_qmi(mbim
)) {
146 /* must consume other MBIM packets */
147 ustream_consume(us
, msg_len
);
151 if (len
< offsetof(struct qmi_msg
, flags
))
153 msg
= (struct qmi_msg
*) buf
;
154 msg_len
= le16_to_cpu(msg
->qmux
.len
) + 1;
160 qmi_process_msg(qmi
, msg
);
161 ustream_consume(us
, msg_len
);
165 int qmi_request_start(struct qmi_dev
*qmi
, struct qmi_request
*req
, struct qmi_msg
*msg
, request_cb cb
)
167 int len
= qmi_complete_request_message(msg
);
169 char *buf
= (void *) msg
;
171 memset(req
, 0, sizeof(*req
));
173 req
->service
= msg
->qmux
.service
;
174 if (req
->service
== QMI_SERVICE_CTL
) {
175 tid
= qmi
->ctl_tid
++;
176 msg
->ctl
.transaction
= tid
;
178 int idx
= qmi_get_service_idx(req
->service
);
183 tid
= qmi
->service_data
[idx
].tid
++;
184 msg
->svc
.transaction
= cpu_to_le16(tid
);
185 msg
->qmux
.client
= qmi
->service_data
[idx
].client_id
;
191 list_add(&req
->list
, &qmi
->req
);
194 buf
-= sizeof(struct mbim_command_message
);
195 mbim_qmi_cmd((struct mbim_command_message
*) buf
, len
, tid
);
196 len
+= sizeof(struct mbim_command_message
);
199 dump_packet("Send packet", buf
, len
);
200 ustream_write(&qmi
->sf
.stream
, buf
, len
, false);
204 void qmi_request_cancel(struct qmi_dev
*qmi
, struct qmi_request
*req
)
207 __qmi_request_complete(qmi
, req
, NULL
);
210 int qmi_request_wait(struct qmi_dev
*qmi
, struct qmi_request
*req
)
212 bool complete
= false;
219 *req
->complete
= true;
221 req
->complete
= &complete
;
223 cancelled
= uloop_cancelled
;
224 uloop_cancelled
= false;
227 if (cancel_all_requests
)
228 qmi_request_cancel(qmi
, req
);
230 uloop_cancelled
= cancelled
;
233 if (req
->complete
== &complete
)
234 req
->complete
= NULL
;
239 struct qmi_connect_request
{
240 struct qmi_request req
;
244 static void qmi_connect_service_cb(struct qmi_dev
*qmi
, struct qmi_request
*req
, struct qmi_msg
*msg
)
246 struct qmi_ctl_allocate_cid_response res
;
247 struct qmi_connect_request
*creq
= container_of(req
, struct qmi_connect_request
, req
);
252 qmi_parse_ctl_allocate_cid_response(msg
, &res
);
253 creq
->cid
= res
.data
.allocation_info
.cid
;
256 int qmi_service_connect(struct qmi_dev
*qmi
, QmiService svc
, int client_id
)
258 struct qmi_ctl_allocate_cid_request creq
= {
259 QMI_INIT(service
, svc
)
261 struct qmi_connect_request req
;
262 int idx
= qmi_get_service_idx(svc
);
263 struct qmi_msg
*msg
= &msgbuf
.u
.msg
;
268 if (qmi
->service_connected
& (1 << idx
))
272 qmi_set_ctl_allocate_cid_request(msg
, &creq
);
273 qmi_request_start(qmi
, &req
.req
, msg
, qmi_connect_service_cb
);
274 qmi_request_wait(qmi
, &req
.req
);
281 qmi
->service_keep_cid
|= (1 << idx
);
284 qmi
->service_data
[idx
].connected
= true;
285 qmi
->service_data
[idx
].client_id
= client_id
;
286 qmi
->service_data
[idx
].tid
= 1;
287 qmi
->service_connected
|= (1 << idx
);
292 static void __qmi_service_disconnect(struct qmi_dev
*qmi
, int idx
)
294 int client_id
= qmi
->service_data
[idx
].client_id
;
295 struct qmi_ctl_release_cid_request creq
= {
296 QMI_INIT_SEQUENCE(release_info
,
297 .service
= qmi_services
[idx
],
301 struct qmi_request req
;
302 struct qmi_msg
*msg
= &msgbuf
.u
.msg
;
304 qmi
->service_connected
&= ~(1 << idx
);
305 qmi
->service_data
[idx
].client_id
= -1;
306 qmi
->service_data
[idx
].tid
= 0;
308 qmi_set_ctl_release_cid_request(msg
, &creq
);
309 qmi_request_start(qmi
, &req
, msg
, NULL
);
310 qmi_request_wait(qmi
, &req
);
313 int qmi_service_release_client_id(struct qmi_dev
*qmi
, QmiService svc
)
315 int idx
= qmi_get_service_idx(svc
);
316 qmi
->service_release_cid
|= 1 << idx
;
320 static void qmi_close_all_services(struct qmi_dev
*qmi
)
322 uint32_t connected
= qmi
->service_connected
;
325 qmi
->service_keep_cid
&= ~qmi
->service_release_cid
;
326 for (idx
= 0; connected
; idx
++, connected
>>= 1) {
327 if (!(connected
& 1))
330 if (qmi
->service_keep_cid
& (1 << idx
))
333 __qmi_service_disconnect(qmi
, idx
);
337 int qmi_service_get_client_id(struct qmi_dev
*qmi
, QmiService svc
)
339 int idx
= qmi_get_service_idx(svc
);
344 qmi
->service_keep_cid
|= (1 << idx
);
345 return qmi
->service_data
[idx
].client_id
;
348 int qmi_device_open(struct qmi_dev
*qmi
, const char *path
)
350 struct ustream
*us
= &qmi
->sf
.stream
;
355 fd
= open(path
, O_RDWR
| O_EXCL
| O_NONBLOCK
| O_NOCTTY
);
359 us
->notify_read
= qmi_notify_read
;
360 ustream_fd_init(&qmi
->sf
, fd
);
361 INIT_LIST_HEAD(&qmi
->req
);
367 void qmi_device_close(struct qmi_dev
*qmi
)
369 struct qmi_request
*req
;
371 qmi_close_all_services(qmi
);
372 ustream_free(&qmi
->sf
.stream
);
373 close(qmi
->sf
.fd
.fd
);
375 while (!list_empty(&qmi
->req
)) {
376 req
= list_first_entry(&qmi
->req
, struct qmi_request
, list
);
377 qmi_request_cancel(qmi
, req
);
381 QmiService
qmi_service_get_by_name(const char *str
)
383 static const struct {
387 { "dms", QMI_SERVICE_DMS
},
388 { "nas", QMI_SERVICE_NAS
},
389 { "pds", QMI_SERVICE_PDS
},
390 { "wds", QMI_SERVICE_WDS
},
391 { "wms", QMI_SERVICE_WMS
},
392 { "wda", QMI_SERVICE_WDA
},
396 for (i
= 0; i
< ARRAY_SIZE(services
); i
++) {
397 if (!strcasecmp(str
, services
[i
].name
))
398 return services
[i
].svc
;
404 const char *qmi_get_error_str(int code
)
408 for (i
= 0; i
< ARRAY_SIZE(qmi_errors
); i
++) {
409 if (qmi_errors
[i
].code
== code
)
410 return qmi_errors
[i
].text
;
413 return "Unknown error";