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 dvb_ringbuffer_init(cirbuf, vmalloc(size), size);
95 dvb_ringbuffer_init(ciwbuf, vmalloc(size), size);
99 static void ci_ll_flush(struct dvb_ringbuffer *cirbuf, struct dvb_ringbuffer *ciwbuf)
101 dvb_ringbuffer_flush_spinlock_wakeup(cirbuf);
102 dvb_ringbuffer_flush_spinlock_wakeup(ciwbuf);
105 static void ci_ll_release(struct dvb_ringbuffer *cirbuf, struct dvb_ringbuffer *ciwbuf)
113 static int ci_ll_reset(struct dvb_ringbuffer *cibuf, struct file *file,
114 int slots, ca_slot_info_t *slot)
118 u8 msg[8] = { 0x00, 0x06, 0x00, 0x00, 0xff, 0x02, 0x00, 0x00 };
120 for (i = 0; i < 2; i++) {
121 if (slots & (1 << i))
125 if (dvb_ringbuffer_free(cibuf) < len)
128 for (i = 0; i < 2; i++) {
129 if (slots & (1 << i)) {
131 dvb_ringbuffer_write(cibuf, msg, 8);
139 static ssize_t ci_ll_write(struct dvb_ringbuffer *cibuf, struct file *file,
140 const char __user *buf, size_t count, loff_t *ppos)
143 int non_blocking = file->f_flags & O_NONBLOCK;
144 char *page = (char *)__get_free_page(GFP_USER);
155 if (copy_from_user(page, buf, count))
158 free = dvb_ringbuffer_free(cibuf);
159 if (count + 2 > free) {
164 if (wait_event_interruptible(cibuf->queue,
165 (dvb_ringbuffer_free(cibuf) >= count + 2)))
169 DVB_RINGBUFFER_WRITE_BYTE(cibuf, count >> 8);
170 DVB_RINGBUFFER_WRITE_BYTE(cibuf, count & 0xff);
172 res = dvb_ringbuffer_write(cibuf, page, count);
174 free_page((unsigned long)page);
178 static ssize_t ci_ll_read(struct dvb_ringbuffer *cibuf, struct file *file,
179 char __user *buf, size_t count, loff_t *ppos)
182 int non_blocking = file->f_flags & O_NONBLOCK;
185 if (!cibuf->data || !count)
187 if (non_blocking && (dvb_ringbuffer_empty(cibuf)))
189 if (wait_event_interruptible(cibuf->queue,
190 !dvb_ringbuffer_empty(cibuf)))
192 avail = dvb_ringbuffer_avail(cibuf);
195 len = DVB_RINGBUFFER_PEEK(cibuf, 0) << 8;
196 len |= DVB_RINGBUFFER_PEEK(cibuf, 1);
197 if (avail < len + 2 || count < len)
199 DVB_RINGBUFFER_SKIP(cibuf, 2);
201 return dvb_ringbuffer_read(cibuf, buf, len, 1);
204 static int dvb_ca_open(struct inode *inode, struct file *file)
206 struct dvb_device *dvbdev = (struct dvb_device *) file->private_data;
207 struct av7110 *av7110 = (struct av7110 *) dvbdev->priv;
208 int err = dvb_generic_open(inode, file);
210 dprintk(8, "av7110:%p\n",av7110);
214 ci_ll_flush(&av7110->ci_rbuffer, &av7110->ci_wbuffer);
218 static unsigned int dvb_ca_poll (struct file *file, poll_table *wait)
220 struct dvb_device *dvbdev = (struct dvb_device *) file->private_data;
221 struct av7110 *av7110 = (struct av7110 *) dvbdev->priv;
222 struct dvb_ringbuffer *rbuf = &av7110->ci_rbuffer;
223 struct dvb_ringbuffer *wbuf = &av7110->ci_wbuffer;
224 unsigned int mask = 0;
226 dprintk(8, "av7110:%p\n",av7110);
228 poll_wait(file, &rbuf->queue, wait);
229 poll_wait(file, &wbuf->queue, wait);
231 if (!dvb_ringbuffer_empty(rbuf))
232 mask |= (POLLIN | POLLRDNORM);
234 if (dvb_ringbuffer_free(wbuf) > 1024)
235 mask |= (POLLOUT | POLLWRNORM);
240 static int dvb_ca_ioctl(struct inode *inode, struct file *file,
241 unsigned int cmd, void *parg)
243 struct dvb_device *dvbdev = (struct dvb_device *) file->private_data;
244 struct av7110 *av7110 = (struct av7110 *) dvbdev->priv;
245 unsigned long arg = (unsigned long) parg;
247 dprintk(8, "av7110:%p\n",av7110);
251 return ci_ll_reset(&av7110->ci_wbuffer, file, arg, &av7110->ci_slot[0]);
258 cap.slot_type = (FW_CI_LL_SUPPORT(av7110->arm_app) ?
259 CA_CI_LINK : CA_CI) | CA_DESCR;
261 cap.descr_type = CA_ECD;
262 memcpy(parg, &cap, sizeof(cap));
266 case CA_GET_SLOT_INFO:
268 ca_slot_info_t *info=(ca_slot_info_t *)parg;
272 av7110->ci_slot[info->num].num = info->num;
273 av7110->ci_slot[info->num].type = FW_CI_LL_SUPPORT(av7110->arm_app) ?
275 memcpy(info, &av7110->ci_slot[info->num], sizeof(ca_slot_info_t));
285 case CA_GET_DESCR_INFO:
287 ca_descr_info_t info;
291 memcpy(parg, &info, sizeof (info));
297 ca_descr_t *descr = (ca_descr_t*) parg;
299 if (descr->index >= 16)
301 if (descr->parity > 1)
303 av7110_fw_cmd(av7110, COMTYPE_PIDFILTER, SetDescr, 5,
304 (descr->index<<8)|descr->parity,
305 (descr->cw[0]<<8)|descr->cw[1],
306 (descr->cw[2]<<8)|descr->cw[3],
307 (descr->cw[4]<<8)|descr->cw[5],
308 (descr->cw[6]<<8)|descr->cw[7]);
318 static ssize_t dvb_ca_write(struct file *file, const char __user *buf,
319 size_t count, loff_t *ppos)
321 struct dvb_device *dvbdev = (struct dvb_device *) file->private_data;
322 struct av7110 *av7110 = (struct av7110 *) dvbdev->priv;
324 dprintk(8, "av7110:%p\n",av7110);
325 return ci_ll_write(&av7110->ci_wbuffer, file, buf, count, ppos);
328 static ssize_t dvb_ca_read(struct file *file, char __user *buf,
329 size_t count, loff_t *ppos)
331 struct dvb_device *dvbdev = (struct dvb_device *) file->private_data;
332 struct av7110 *av7110 = (struct av7110 *) dvbdev->priv;
334 dprintk(8, "av7110:%p\n",av7110);
335 return ci_ll_read(&av7110->ci_rbuffer, file, buf, count, ppos);
340 static struct file_operations dvb_ca_fops = {
341 .owner = THIS_MODULE,
343 .write = dvb_ca_write,
344 .ioctl = dvb_generic_ioctl,
346 .release = dvb_generic_release,
350 static struct dvb_device dvbdev_ca = {
354 .fops = &dvb_ca_fops,
355 .kernel_ioctl = dvb_ca_ioctl,
359 int av7110_ca_register(struct av7110 *av7110)
361 return dvb_register_device(av7110->dvb_adapter, &av7110->ca_dev,
362 &dvbdev_ca, av7110, DVB_DEVICE_CA);
365 void av7110_ca_unregister(struct av7110 *av7110)
367 dvb_unregister_device(av7110->ca_dev);
370 void av7110_ca_init(struct av7110* av7110)
372 ci_ll_init(&av7110->ci_rbuffer, &av7110->ci_wbuffer, 8192);
375 void av7110_ca_exit(struct av7110* av7110)
377 ci_ll_release(&av7110->ci_rbuffer, &av7110->ci_wbuffer);