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"
45 void CI_handle(struct av7110 *av7110, u8 *data, u16 len)
47 dprintk(8, "av7110:%p\n",av7110);
53 if (data[2] != 1 && data[2] != 2)
57 av7110->ci_slot[data[2] - 1].flags = 0;
60 av7110->ci_slot[data[2] - 1].flags |= CA_CI_MODULE_PRESENT;
63 av7110->ci_slot[data[2] - 1].flags |= CA_CI_MODULE_READY;
67 case CI_SWITCH_PRG_REPLY:
68 //av7110->ci_stat=data[1];
76 void ci_get_data(struct dvb_ringbuffer *cibuf, u8 *data, int len)
78 if (dvb_ringbuffer_free(cibuf) < len + 2)
81 DVB_RINGBUFFER_WRITE_BYTE(cibuf, len >> 8);
82 DVB_RINGBUFFER_WRITE_BYTE(cibuf, len & 0xff);
83 dvb_ringbuffer_write(cibuf, data, len);
84 wake_up_interruptible(&cibuf->queue);
88 /******************************************************************************
89 * CI link layer file ops
90 ******************************************************************************/
92 static int ci_ll_init(struct dvb_ringbuffer *cirbuf, struct dvb_ringbuffer *ciwbuf, int size)
94 struct dvb_ringbuffer *tab[] = { cirbuf, ciwbuf, NULL }, **p;
97 for (p = tab; *p; p++) {
106 dvb_ringbuffer_init(*p, data, size);
111 static void ci_ll_flush(struct dvb_ringbuffer *cirbuf, struct dvb_ringbuffer *ciwbuf)
113 dvb_ringbuffer_flush_spinlock_wakeup(cirbuf);
114 dvb_ringbuffer_flush_spinlock_wakeup(ciwbuf);
117 static void ci_ll_release(struct dvb_ringbuffer *cirbuf, struct dvb_ringbuffer *ciwbuf)
125 static int ci_ll_reset(struct dvb_ringbuffer *cibuf, struct file *file,
126 int slots, ca_slot_info_t *slot)
130 u8 msg[8] = { 0x00, 0x06, 0x00, 0x00, 0xff, 0x02, 0x00, 0x00 };
132 for (i = 0; i < 2; i++) {
133 if (slots & (1 << i))
137 if (dvb_ringbuffer_free(cibuf) < len)
140 for (i = 0; i < 2; i++) {
141 if (slots & (1 << i)) {
143 dvb_ringbuffer_write(cibuf, msg, 8);
151 static ssize_t ci_ll_write(struct dvb_ringbuffer *cibuf, struct file *file,
152 const char __user *buf, size_t count, loff_t *ppos)
155 int non_blocking = file->f_flags & O_NONBLOCK;
156 char *page = (char *)__get_free_page(GFP_USER);
167 if (copy_from_user(page, buf, count))
170 free = dvb_ringbuffer_free(cibuf);
171 if (count + 2 > free) {
176 if (wait_event_interruptible(cibuf->queue,
177 (dvb_ringbuffer_free(cibuf) >= count + 2)))
181 DVB_RINGBUFFER_WRITE_BYTE(cibuf, count >> 8);
182 DVB_RINGBUFFER_WRITE_BYTE(cibuf, count & 0xff);
184 res = dvb_ringbuffer_write(cibuf, page, count);
186 free_page((unsigned long)page);
190 static ssize_t ci_ll_read(struct dvb_ringbuffer *cibuf, struct file *file,
191 char __user *buf, size_t count, loff_t *ppos)
194 int non_blocking = file->f_flags & O_NONBLOCK;
197 if (!cibuf->data || !count)
199 if (non_blocking && (dvb_ringbuffer_empty(cibuf)))
201 if (wait_event_interruptible(cibuf->queue,
202 !dvb_ringbuffer_empty(cibuf)))
204 avail = dvb_ringbuffer_avail(cibuf);
207 len = DVB_RINGBUFFER_PEEK(cibuf, 0) << 8;
208 len |= DVB_RINGBUFFER_PEEK(cibuf, 1);
209 if (avail < len + 2 || count < len)
211 DVB_RINGBUFFER_SKIP(cibuf, 2);
213 return dvb_ringbuffer_read(cibuf, buf, len, 1);
216 static int dvb_ca_open(struct inode *inode, struct file *file)
218 struct dvb_device *dvbdev = (struct dvb_device *) file->private_data;
219 struct av7110 *av7110 = (struct av7110 *) dvbdev->priv;
220 int err = dvb_generic_open(inode, file);
222 dprintk(8, "av7110:%p\n",av7110);
226 ci_ll_flush(&av7110->ci_rbuffer, &av7110->ci_wbuffer);
230 static unsigned int dvb_ca_poll (struct file *file, poll_table *wait)
232 struct dvb_device *dvbdev = (struct dvb_device *) file->private_data;
233 struct av7110 *av7110 = (struct av7110 *) dvbdev->priv;
234 struct dvb_ringbuffer *rbuf = &av7110->ci_rbuffer;
235 struct dvb_ringbuffer *wbuf = &av7110->ci_wbuffer;
236 unsigned int mask = 0;
238 dprintk(8, "av7110:%p\n",av7110);
240 poll_wait(file, &rbuf->queue, wait);
241 poll_wait(file, &wbuf->queue, wait);
243 if (!dvb_ringbuffer_empty(rbuf))
244 mask |= (POLLIN | POLLRDNORM);
246 if (dvb_ringbuffer_free(wbuf) > 1024)
247 mask |= (POLLOUT | POLLWRNORM);
252 static int dvb_ca_ioctl(struct inode *inode, struct file *file,
253 unsigned int cmd, void *parg)
255 struct dvb_device *dvbdev = (struct dvb_device *) file->private_data;
256 struct av7110 *av7110 = (struct av7110 *) dvbdev->priv;
257 unsigned long arg = (unsigned long) parg;
259 dprintk(8, "av7110:%p\n",av7110);
263 return ci_ll_reset(&av7110->ci_wbuffer, file, arg, &av7110->ci_slot[0]);
270 cap.slot_type = (FW_CI_LL_SUPPORT(av7110->arm_app) ?
271 CA_CI_LINK : CA_CI) | CA_DESCR;
273 cap.descr_type = CA_ECD;
274 memcpy(parg, &cap, sizeof(cap));
278 case CA_GET_SLOT_INFO:
280 ca_slot_info_t *info=(ca_slot_info_t *)parg;
284 av7110->ci_slot[info->num].num = info->num;
285 av7110->ci_slot[info->num].type = FW_CI_LL_SUPPORT(av7110->arm_app) ?
287 memcpy(info, &av7110->ci_slot[info->num], sizeof(ca_slot_info_t));
297 case CA_GET_DESCR_INFO:
299 ca_descr_info_t info;
303 memcpy(parg, &info, sizeof (info));
309 ca_descr_t *descr = (ca_descr_t*) parg;
311 if (descr->index >= 16)
313 if (descr->parity > 1)
315 av7110_fw_cmd(av7110, COMTYPE_PIDFILTER, SetDescr, 5,
316 (descr->index<<8)|descr->parity,
317 (descr->cw[0]<<8)|descr->cw[1],
318 (descr->cw[2]<<8)|descr->cw[3],
319 (descr->cw[4]<<8)|descr->cw[5],
320 (descr->cw[6]<<8)|descr->cw[7]);
330 static ssize_t dvb_ca_write(struct file *file, const char __user *buf,
331 size_t count, loff_t *ppos)
333 struct dvb_device *dvbdev = (struct dvb_device *) file->private_data;
334 struct av7110 *av7110 = (struct av7110 *) dvbdev->priv;
336 dprintk(8, "av7110:%p\n",av7110);
337 return ci_ll_write(&av7110->ci_wbuffer, file, buf, count, ppos);
340 static ssize_t dvb_ca_read(struct file *file, char __user *buf,
341 size_t count, loff_t *ppos)
343 struct dvb_device *dvbdev = (struct dvb_device *) file->private_data;
344 struct av7110 *av7110 = (struct av7110 *) dvbdev->priv;
346 dprintk(8, "av7110:%p\n",av7110);
347 return ci_ll_read(&av7110->ci_rbuffer, file, buf, count, ppos);
352 static struct file_operations dvb_ca_fops = {
353 .owner = THIS_MODULE,
355 .write = dvb_ca_write,
356 .ioctl = dvb_generic_ioctl,
358 .release = dvb_generic_release,
362 static struct dvb_device dvbdev_ca = {
366 .fops = &dvb_ca_fops,
367 .kernel_ioctl = dvb_ca_ioctl,
371 int av7110_ca_register(struct av7110 *av7110)
373 return dvb_register_device(&av7110->dvb_adapter, &av7110->ca_dev,
374 &dvbdev_ca, av7110, DVB_DEVICE_CA);
377 void av7110_ca_unregister(struct av7110 *av7110)
379 dvb_unregister_device(av7110->ca_dev);
382 int av7110_ca_init(struct av7110* av7110)
384 return ci_ll_init(&av7110->ci_rbuffer, &av7110->ci_wbuffer, 8192);
387 void av7110_ca_exit(struct av7110* av7110)
389 ci_ll_release(&av7110->ci_rbuffer, &av7110->ci_wbuffer);