2 * av7110_ca.c: CA and CI stuff
4 * Copyright (C) 1999-2002 Ralph Metzler
5 * & Marcus Metzler for convergence integrated media GmbH
7 * originally based on code by:
8 * Copyright (C) 1998,1999 Christian Theiss <mistert@rz.fh-augsburg.de>
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.
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.
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
28 * the project's page is at http://www.linuxtv.org/dvb/
31 #include <linux/kernel.h>
32 #include <linux/sched.h>
33 #include <linux/types.h>
34 #include <linux/delay.h>
36 #include <linux/timer.h>
37 #include <linux/poll.h>
38 #include <linux/byteorder/swabb.h>
39 #include <linux/smp_lock.h>
42 #include "av7110_hw.h"
43 #include "av7110_ca.h"
46 void CI_handle(struct av7110 *av7110, u8 *data, u16 len)
48 dprintk(8, "av7110:%p\n",av7110);
54 if (data[2] != 1 && data[2] != 2)
58 av7110->ci_slot[data[2] - 1].flags = 0;
61 av7110->ci_slot[data[2] - 1].flags |= CA_CI_MODULE_PRESENT;
64 av7110->ci_slot[data[2] - 1].flags |= CA_CI_MODULE_READY;
68 case CI_SWITCH_PRG_REPLY:
69 //av7110->ci_stat=data[1];
77 void ci_get_data(struct dvb_ringbuffer *cibuf, u8 *data, int len)
79 if (dvb_ringbuffer_free(cibuf) < len + 2)
82 DVB_RINGBUFFER_WRITE_BYTE(cibuf, len >> 8);
83 DVB_RINGBUFFER_WRITE_BYTE(cibuf, len & 0xff);
84 dvb_ringbuffer_write(cibuf, data, len);
85 wake_up_interruptible(&cibuf->queue);
89 /******************************************************************************
90 * CI link layer file ops
91 ******************************************************************************/
93 static int ci_ll_init(struct dvb_ringbuffer *cirbuf, struct dvb_ringbuffer *ciwbuf, int size)
95 struct dvb_ringbuffer *tab[] = { cirbuf, ciwbuf, NULL }, **p;
98 for (p = tab; *p; p++) {
107 dvb_ringbuffer_init(*p, data, size);
112 static void ci_ll_flush(struct dvb_ringbuffer *cirbuf, struct dvb_ringbuffer *ciwbuf)
114 dvb_ringbuffer_flush_spinlock_wakeup(cirbuf);
115 dvb_ringbuffer_flush_spinlock_wakeup(ciwbuf);
118 static void ci_ll_release(struct dvb_ringbuffer *cirbuf, struct dvb_ringbuffer *ciwbuf)
126 static int ci_ll_reset(struct dvb_ringbuffer *cibuf, struct file *file,
127 int slots, ca_slot_info_t *slot)
131 u8 msg[8] = { 0x00, 0x06, 0x00, 0x00, 0xff, 0x02, 0x00, 0x00 };
133 for (i = 0; i < 2; i++) {
134 if (slots & (1 << i))
138 if (dvb_ringbuffer_free(cibuf) < len)
141 for (i = 0; i < 2; i++) {
142 if (slots & (1 << i)) {
144 dvb_ringbuffer_write(cibuf, msg, 8);
152 static ssize_t ci_ll_write(struct dvb_ringbuffer *cibuf, struct file *file,
153 const char __user *buf, size_t count, loff_t *ppos)
156 int non_blocking = file->f_flags & O_NONBLOCK;
157 char *page = (char *)__get_free_page(GFP_USER);
168 if (copy_from_user(page, buf, count))
171 free = dvb_ringbuffer_free(cibuf);
172 if (count + 2 > free) {
177 if (wait_event_interruptible(cibuf->queue,
178 (dvb_ringbuffer_free(cibuf) >= count + 2)))
182 DVB_RINGBUFFER_WRITE_BYTE(cibuf, count >> 8);
183 DVB_RINGBUFFER_WRITE_BYTE(cibuf, count & 0xff);
185 res = dvb_ringbuffer_write(cibuf, page, count);
187 free_page((unsigned long)page);
191 static ssize_t ci_ll_read(struct dvb_ringbuffer *cibuf, struct file *file,
192 char __user *buf, size_t count, loff_t *ppos)
195 int non_blocking = file->f_flags & O_NONBLOCK;
198 if (!cibuf->data || !count)
200 if (non_blocking && (dvb_ringbuffer_empty(cibuf)))
202 if (wait_event_interruptible(cibuf->queue,
203 !dvb_ringbuffer_empty(cibuf)))
205 avail = dvb_ringbuffer_avail(cibuf);
208 len = DVB_RINGBUFFER_PEEK(cibuf, 0) << 8;
209 len |= DVB_RINGBUFFER_PEEK(cibuf, 1);
210 if (avail < len + 2 || count < len)
212 DVB_RINGBUFFER_SKIP(cibuf, 2);
214 return dvb_ringbuffer_read(cibuf, buf, len, 1);
217 static int dvb_ca_open(struct inode *inode, struct file *file)
219 struct dvb_device *dvbdev = (struct dvb_device *) file->private_data;
220 struct av7110 *av7110 = (struct av7110 *) dvbdev->priv;
221 int err = dvb_generic_open(inode, file);
223 dprintk(8, "av7110:%p\n",av7110);
227 ci_ll_flush(&av7110->ci_rbuffer, &av7110->ci_wbuffer);
231 static unsigned int dvb_ca_poll (struct file *file, poll_table *wait)
233 struct dvb_device *dvbdev = (struct dvb_device *) file->private_data;
234 struct av7110 *av7110 = (struct av7110 *) dvbdev->priv;
235 struct dvb_ringbuffer *rbuf = &av7110->ci_rbuffer;
236 struct dvb_ringbuffer *wbuf = &av7110->ci_wbuffer;
237 unsigned int mask = 0;
239 dprintk(8, "av7110:%p\n",av7110);
241 poll_wait(file, &rbuf->queue, wait);
242 poll_wait(file, &wbuf->queue, wait);
244 if (!dvb_ringbuffer_empty(rbuf))
245 mask |= (POLLIN | POLLRDNORM);
247 if (dvb_ringbuffer_free(wbuf) > 1024)
248 mask |= (POLLOUT | POLLWRNORM);
253 static int dvb_ca_ioctl(struct inode *inode, struct file *file,
254 unsigned int cmd, void *parg)
256 struct dvb_device *dvbdev = (struct dvb_device *) file->private_data;
257 struct av7110 *av7110 = (struct av7110 *) dvbdev->priv;
258 unsigned long arg = (unsigned long) parg;
260 dprintk(8, "av7110:%p\n",av7110);
264 return ci_ll_reset(&av7110->ci_wbuffer, file, arg, &av7110->ci_slot[0]);
271 cap.slot_type = (FW_CI_LL_SUPPORT(av7110->arm_app) ?
272 CA_CI_LINK : CA_CI) | CA_DESCR;
274 cap.descr_type = CA_ECD;
275 memcpy(parg, &cap, sizeof(cap));
279 case CA_GET_SLOT_INFO:
281 ca_slot_info_t *info=(ca_slot_info_t *)parg;
285 av7110->ci_slot[info->num].num = info->num;
286 av7110->ci_slot[info->num].type = FW_CI_LL_SUPPORT(av7110->arm_app) ?
288 memcpy(info, &av7110->ci_slot[info->num], sizeof(ca_slot_info_t));
298 case CA_GET_DESCR_INFO:
300 ca_descr_info_t info;
304 memcpy(parg, &info, sizeof (info));
310 ca_descr_t *descr = (ca_descr_t*) parg;
312 if (descr->index >= 16)
314 if (descr->parity > 1)
316 av7110_fw_cmd(av7110, COMTYPE_PIDFILTER, SetDescr, 5,
317 (descr->index<<8)|descr->parity,
318 (descr->cw[0]<<8)|descr->cw[1],
319 (descr->cw[2]<<8)|descr->cw[3],
320 (descr->cw[4]<<8)|descr->cw[5],
321 (descr->cw[6]<<8)|descr->cw[7]);
331 static ssize_t dvb_ca_write(struct file *file, const char __user *buf,
332 size_t count, loff_t *ppos)
334 struct dvb_device *dvbdev = (struct dvb_device *) file->private_data;
335 struct av7110 *av7110 = (struct av7110 *) dvbdev->priv;
337 dprintk(8, "av7110:%p\n",av7110);
338 return ci_ll_write(&av7110->ci_wbuffer, file, buf, count, ppos);
341 static ssize_t dvb_ca_read(struct file *file, char __user *buf,
342 size_t count, loff_t *ppos)
344 struct dvb_device *dvbdev = (struct dvb_device *) file->private_data;
345 struct av7110 *av7110 = (struct av7110 *) dvbdev->priv;
347 dprintk(8, "av7110:%p\n",av7110);
348 return ci_ll_read(&av7110->ci_rbuffer, file, buf, count, ppos);
353 static struct file_operations dvb_ca_fops = {
354 .owner = THIS_MODULE,
356 .write = dvb_ca_write,
357 .ioctl = dvb_generic_ioctl,
359 .release = dvb_generic_release,
363 static struct dvb_device dvbdev_ca = {
367 .fops = &dvb_ca_fops,
368 .kernel_ioctl = dvb_ca_ioctl,
372 int av7110_ca_register(struct av7110 *av7110)
374 return dvb_register_device(&av7110->dvb_adapter, &av7110->ca_dev,
375 &dvbdev_ca, av7110, DVB_DEVICE_CA);
378 void av7110_ca_unregister(struct av7110 *av7110)
380 dvb_unregister_device(av7110->ca_dev);
383 int av7110_ca_init(struct av7110* av7110)
385 return ci_ll_init(&av7110->ci_rbuffer, &av7110->ci_wbuffer, 8192);
388 void av7110_ca_exit(struct av7110* av7110)
390 ci_ll_release(&av7110->ci_rbuffer, &av7110->ci_wbuffer);