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1da177e4 LT |
1 | /* |
2 | * av7110_ca.c: CA and CI stuff | |
3 | * | |
4 | * Copyright (C) 1999-2002 Ralph Metzler | |
5 | * & Marcus Metzler for convergence integrated media GmbH | |
6 | * | |
7 | * originally based on code by: | |
8 | * Copyright (C) 1998,1999 Christian Theiss <mistert@rz.fh-augsburg.de> | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or | |
11 | * modify it under the terms of the GNU General Public License | |
12 | * as published by the Free Software Foundation; either version 2 | |
13 | * of the License, or (at your option) any later version. | |
14 | * | |
15 | * | |
16 | * This program is distributed in the hope that it will be useful, | |
17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | * GNU General Public License for more details. | |
20 | * | |
21 | * | |
22 | * You should have received a copy of the GNU General Public License | |
23 | * along with this program; if not, write to the Free Software | |
24 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
25 | * Or, point your browser to http://www.gnu.org/copyleft/gpl.html | |
26 | * | |
27 | * | |
631dd1a8 | 28 | * the project's page is at http://www.linuxtv.org/ |
1da177e4 LT |
29 | */ |
30 | ||
31 | #include <linux/kernel.h> | |
1da177e4 LT |
32 | #include <linux/types.h> |
33 | #include <linux/delay.h> | |
34 | #include <linux/fs.h> | |
35 | #include <linux/timer.h> | |
36 | #include <linux/poll.h> | |
5a0e3ad6 | 37 | #include <linux/gfp.h> |
1da177e4 LT |
38 | |
39 | #include "av7110.h" | |
40 | #include "av7110_hw.h" | |
15ac8e66 | 41 | #include "av7110_ca.h" |
1da177e4 LT |
42 | |
43 | ||
44 | void CI_handle(struct av7110 *av7110, u8 *data, u16 len) | |
45 | { | |
46 | dprintk(8, "av7110:%p\n",av7110); | |
47 | ||
48 | if (len < 3) | |
49 | return; | |
50 | switch (data[0]) { | |
51 | case CI_MSG_CI_INFO: | |
52 | if (data[2] != 1 && data[2] != 2) | |
53 | break; | |
54 | switch (data[1]) { | |
55 | case 0: | |
56 | av7110->ci_slot[data[2] - 1].flags = 0; | |
57 | break; | |
58 | case 1: | |
59 | av7110->ci_slot[data[2] - 1].flags |= CA_CI_MODULE_PRESENT; | |
60 | break; | |
61 | case 2: | |
62 | av7110->ci_slot[data[2] - 1].flags |= CA_CI_MODULE_READY; | |
63 | break; | |
64 | } | |
65 | break; | |
66 | case CI_SWITCH_PRG_REPLY: | |
67 | //av7110->ci_stat=data[1]; | |
68 | break; | |
69 | default: | |
70 | break; | |
71 | } | |
72 | } | |
73 | ||
74 | ||
75 | void ci_get_data(struct dvb_ringbuffer *cibuf, u8 *data, int len) | |
76 | { | |
77 | if (dvb_ringbuffer_free(cibuf) < len + 2) | |
78 | return; | |
79 | ||
80 | DVB_RINGBUFFER_WRITE_BYTE(cibuf, len >> 8); | |
81 | DVB_RINGBUFFER_WRITE_BYTE(cibuf, len & 0xff); | |
82 | dvb_ringbuffer_write(cibuf, data, len); | |
83 | wake_up_interruptible(&cibuf->queue); | |
84 | } | |
85 | ||
86 | ||
87 | /****************************************************************************** | |
88 | * CI link layer file ops | |
89 | ******************************************************************************/ | |
90 | ||
91 | static int ci_ll_init(struct dvb_ringbuffer *cirbuf, struct dvb_ringbuffer *ciwbuf, int size) | |
92 | { | |
93 | struct dvb_ringbuffer *tab[] = { cirbuf, ciwbuf, NULL }, **p; | |
94 | void *data; | |
95 | ||
96 | for (p = tab; *p; p++) { | |
97 | data = vmalloc(size); | |
98 | if (!data) { | |
99 | while (p-- != tab) { | |
100 | vfree(p[0]->data); | |
101 | p[0]->data = NULL; | |
102 | } | |
103 | return -ENOMEM; | |
104 | } | |
105 | dvb_ringbuffer_init(*p, data, size); | |
106 | } | |
107 | return 0; | |
108 | } | |
109 | ||
110 | static void ci_ll_flush(struct dvb_ringbuffer *cirbuf, struct dvb_ringbuffer *ciwbuf) | |
111 | { | |
112 | dvb_ringbuffer_flush_spinlock_wakeup(cirbuf); | |
113 | dvb_ringbuffer_flush_spinlock_wakeup(ciwbuf); | |
114 | } | |
115 | ||
116 | static void ci_ll_release(struct dvb_ringbuffer *cirbuf, struct dvb_ringbuffer *ciwbuf) | |
117 | { | |
118 | vfree(cirbuf->data); | |
119 | cirbuf->data = NULL; | |
120 | vfree(ciwbuf->data); | |
121 | ciwbuf->data = NULL; | |
122 | } | |
123 | ||
124 | static int ci_ll_reset(struct dvb_ringbuffer *cibuf, struct file *file, | |
3165dcb3 | 125 | int slots, ca_slot_info_t *slot) |
1da177e4 LT |
126 | { |
127 | int i; | |
128 | int len = 0; | |
129 | u8 msg[8] = { 0x00, 0x06, 0x00, 0x00, 0xff, 0x02, 0x00, 0x00 }; | |
130 | ||
131 | for (i = 0; i < 2; i++) { | |
132 | if (slots & (1 << i)) | |
133 | len += 8; | |
134 | } | |
135 | ||
136 | if (dvb_ringbuffer_free(cibuf) < len) | |
137 | return -EBUSY; | |
138 | ||
139 | for (i = 0; i < 2; i++) { | |
140 | if (slots & (1 << i)) { | |
141 | msg[2] = i; | |
142 | dvb_ringbuffer_write(cibuf, msg, 8); | |
143 | slot[i].flags = 0; | |
144 | } | |
145 | } | |
146 | ||
147 | return 0; | |
148 | } | |
149 | ||
150 | static ssize_t ci_ll_write(struct dvb_ringbuffer *cibuf, struct file *file, | |
151 | const char __user *buf, size_t count, loff_t *ppos) | |
152 | { | |
153 | int free; | |
154 | int non_blocking = file->f_flags & O_NONBLOCK; | |
804b4458 | 155 | u8 *page = (u8 *)__get_free_page(GFP_USER); |
1da177e4 LT |
156 | int res; |
157 | ||
158 | if (!page) | |
159 | return -ENOMEM; | |
160 | ||
161 | res = -EINVAL; | |
162 | if (count > 2048) | |
163 | goto out; | |
164 | ||
165 | res = -EFAULT; | |
166 | if (copy_from_user(page, buf, count)) | |
167 | goto out; | |
168 | ||
169 | free = dvb_ringbuffer_free(cibuf); | |
170 | if (count + 2 > free) { | |
171 | res = -EWOULDBLOCK; | |
172 | if (non_blocking) | |
173 | goto out; | |
174 | res = -ERESTARTSYS; | |
175 | if (wait_event_interruptible(cibuf->queue, | |
176 | (dvb_ringbuffer_free(cibuf) >= count + 2))) | |
177 | goto out; | |
178 | } | |
179 | ||
180 | DVB_RINGBUFFER_WRITE_BYTE(cibuf, count >> 8); | |
181 | DVB_RINGBUFFER_WRITE_BYTE(cibuf, count & 0xff); | |
182 | ||
183 | res = dvb_ringbuffer_write(cibuf, page, count); | |
184 | out: | |
185 | free_page((unsigned long)page); | |
186 | return res; | |
187 | } | |
188 | ||
189 | static ssize_t ci_ll_read(struct dvb_ringbuffer *cibuf, struct file *file, | |
190 | char __user *buf, size_t count, loff_t *ppos) | |
191 | { | |
192 | int avail; | |
193 | int non_blocking = file->f_flags & O_NONBLOCK; | |
194 | ssize_t len; | |
195 | ||
196 | if (!cibuf->data || !count) | |
197 | return 0; | |
198 | if (non_blocking && (dvb_ringbuffer_empty(cibuf))) | |
199 | return -EWOULDBLOCK; | |
200 | if (wait_event_interruptible(cibuf->queue, | |
201 | !dvb_ringbuffer_empty(cibuf))) | |
202 | return -ERESTARTSYS; | |
203 | avail = dvb_ringbuffer_avail(cibuf); | |
204 | if (avail < 4) | |
205 | return 0; | |
206 | len = DVB_RINGBUFFER_PEEK(cibuf, 0) << 8; | |
207 | len |= DVB_RINGBUFFER_PEEK(cibuf, 1); | |
208 | if (avail < len + 2 || count < len) | |
209 | return -EINVAL; | |
210 | DVB_RINGBUFFER_SKIP(cibuf, 2); | |
211 | ||
b0ba0e3a | 212 | return dvb_ringbuffer_read_user(cibuf, buf, len); |
1da177e4 LT |
213 | } |
214 | ||
215 | static int dvb_ca_open(struct inode *inode, struct file *file) | |
216 | { | |
d9bdf772 TK |
217 | struct dvb_device *dvbdev = file->private_data; |
218 | struct av7110 *av7110 = dvbdev->priv; | |
1da177e4 LT |
219 | int err = dvb_generic_open(inode, file); |
220 | ||
221 | dprintk(8, "av7110:%p\n",av7110); | |
222 | ||
223 | if (err < 0) | |
224 | return err; | |
225 | ci_ll_flush(&av7110->ci_rbuffer, &av7110->ci_wbuffer); | |
226 | return 0; | |
227 | } | |
228 | ||
229 | static unsigned int dvb_ca_poll (struct file *file, poll_table *wait) | |
230 | { | |
d9bdf772 TK |
231 | struct dvb_device *dvbdev = file->private_data; |
232 | struct av7110 *av7110 = dvbdev->priv; | |
1da177e4 LT |
233 | struct dvb_ringbuffer *rbuf = &av7110->ci_rbuffer; |
234 | struct dvb_ringbuffer *wbuf = &av7110->ci_wbuffer; | |
235 | unsigned int mask = 0; | |
236 | ||
237 | dprintk(8, "av7110:%p\n",av7110); | |
238 | ||
239 | poll_wait(file, &rbuf->queue, wait); | |
240 | poll_wait(file, &wbuf->queue, wait); | |
241 | ||
242 | if (!dvb_ringbuffer_empty(rbuf)) | |
243 | mask |= (POLLIN | POLLRDNORM); | |
244 | ||
245 | if (dvb_ringbuffer_free(wbuf) > 1024) | |
246 | mask |= (POLLOUT | POLLWRNORM); | |
247 | ||
248 | return mask; | |
249 | } | |
250 | ||
16ef8def | 251 | static int dvb_ca_ioctl(struct file *file, unsigned int cmd, void *parg) |
1da177e4 | 252 | { |
d9bdf772 TK |
253 | struct dvb_device *dvbdev = file->private_data; |
254 | struct av7110 *av7110 = dvbdev->priv; | |
1da177e4 LT |
255 | unsigned long arg = (unsigned long) parg; |
256 | ||
257 | dprintk(8, "av7110:%p\n",av7110); | |
258 | ||
259 | switch (cmd) { | |
260 | case CA_RESET: | |
261 | return ci_ll_reset(&av7110->ci_wbuffer, file, arg, &av7110->ci_slot[0]); | |
262 | break; | |
263 | case CA_GET_CAP: | |
264 | { | |
265 | ca_caps_t cap; | |
266 | ||
267 | cap.slot_num = 2; | |
268 | cap.slot_type = (FW_CI_LL_SUPPORT(av7110->arm_app) ? | |
269 | CA_CI_LINK : CA_CI) | CA_DESCR; | |
270 | cap.descr_num = 16; | |
271 | cap.descr_type = CA_ECD; | |
272 | memcpy(parg, &cap, sizeof(cap)); | |
273 | break; | |
274 | } | |
275 | ||
276 | case CA_GET_SLOT_INFO: | |
277 | { | |
278 | ca_slot_info_t *info=(ca_slot_info_t *)parg; | |
279 | ||
280 | if (info->num > 1) | |
281 | return -EINVAL; | |
282 | av7110->ci_slot[info->num].num = info->num; | |
283 | av7110->ci_slot[info->num].type = FW_CI_LL_SUPPORT(av7110->arm_app) ? | |
284 | CA_CI_LINK : CA_CI; | |
285 | memcpy(info, &av7110->ci_slot[info->num], sizeof(ca_slot_info_t)); | |
286 | break; | |
287 | } | |
288 | ||
289 | case CA_GET_MSG: | |
290 | break; | |
291 | ||
292 | case CA_SEND_MSG: | |
293 | break; | |
294 | ||
295 | case CA_GET_DESCR_INFO: | |
296 | { | |
297 | ca_descr_info_t info; | |
298 | ||
299 | info.num = 16; | |
300 | info.type = CA_ECD; | |
301 | memcpy(parg, &info, sizeof (info)); | |
302 | break; | |
303 | } | |
304 | ||
305 | case CA_SET_DESCR: | |
306 | { | |
307 | ca_descr_t *descr = (ca_descr_t*) parg; | |
308 | ||
309 | if (descr->index >= 16) | |
310 | return -EINVAL; | |
311 | if (descr->parity > 1) | |
312 | return -EINVAL; | |
313 | av7110_fw_cmd(av7110, COMTYPE_PIDFILTER, SetDescr, 5, | |
314 | (descr->index<<8)|descr->parity, | |
315 | (descr->cw[0]<<8)|descr->cw[1], | |
316 | (descr->cw[2]<<8)|descr->cw[3], | |
317 | (descr->cw[4]<<8)|descr->cw[5], | |
318 | (descr->cw[6]<<8)|descr->cw[7]); | |
319 | break; | |
320 | } | |
321 | ||
322 | default: | |
323 | return -EINVAL; | |
324 | } | |
325 | return 0; | |
326 | } | |
327 | ||
328 | static ssize_t dvb_ca_write(struct file *file, const char __user *buf, | |
329 | size_t count, loff_t *ppos) | |
330 | { | |
d9bdf772 TK |
331 | struct dvb_device *dvbdev = file->private_data; |
332 | struct av7110 *av7110 = dvbdev->priv; | |
1da177e4 LT |
333 | |
334 | dprintk(8, "av7110:%p\n",av7110); | |
335 | return ci_ll_write(&av7110->ci_wbuffer, file, buf, count, ppos); | |
336 | } | |
337 | ||
338 | static ssize_t dvb_ca_read(struct file *file, char __user *buf, | |
339 | size_t count, loff_t *ppos) | |
340 | { | |
d9bdf772 TK |
341 | struct dvb_device *dvbdev = file->private_data; |
342 | struct av7110 *av7110 = dvbdev->priv; | |
1da177e4 LT |
343 | |
344 | dprintk(8, "av7110:%p\n",av7110); | |
345 | return ci_ll_read(&av7110->ci_rbuffer, file, buf, count, ppos); | |
346 | } | |
347 | ||
784e29d2 | 348 | static const struct file_operations dvb_ca_fops = { |
1da177e4 LT |
349 | .owner = THIS_MODULE, |
350 | .read = dvb_ca_read, | |
351 | .write = dvb_ca_write, | |
16ef8def | 352 | .unlocked_ioctl = dvb_generic_ioctl, |
1da177e4 LT |
353 | .open = dvb_ca_open, |
354 | .release = dvb_generic_release, | |
355 | .poll = dvb_ca_poll, | |
356 | }; | |
357 | ||
358 | static struct dvb_device dvbdev_ca = { | |
359 | .priv = NULL, | |
360 | .users = 1, | |
361 | .writers = 1, | |
362 | .fops = &dvb_ca_fops, | |
363 | .kernel_ioctl = dvb_ca_ioctl, | |
364 | }; | |
365 | ||
366 | ||
367 | int av7110_ca_register(struct av7110 *av7110) | |
368 | { | |
fdc53a6d | 369 | return dvb_register_device(&av7110->dvb_adapter, &av7110->ca_dev, |
1da177e4 LT |
370 | &dvbdev_ca, av7110, DVB_DEVICE_CA); |
371 | } | |
372 | ||
373 | void av7110_ca_unregister(struct av7110 *av7110) | |
374 | { | |
375 | dvb_unregister_device(av7110->ca_dev); | |
376 | } | |
377 | ||
378 | int av7110_ca_init(struct av7110* av7110) | |
379 | { | |
380 | return ci_ll_init(&av7110->ci_rbuffer, &av7110->ci_wbuffer, 8192); | |
381 | } | |
382 | ||
383 | void av7110_ca_exit(struct av7110* av7110) | |
384 | { | |
385 | ci_ll_release(&av7110->ci_rbuffer, &av7110->ci_wbuffer); | |
386 | } |