#include <linux/slab.h>
#include <linux/list.h>
#include <linux/module.h>
+#include <linux/moduleparam.h>
#include <linux/vmalloc.h>
#include <linux/delay.h>
-#include <asm/semaphore.h>
-#include <asm/atomic.h>
+#include <linux/rwsem.h>
#include "dvb_ca_en50221.h"
-#include "dvb_functions.h"
#include "dvb_ringbuffer.h"
-static int dvb_ca_en50221_debug = 0;
+static int dvb_ca_en50221_debug;
+
+module_param_named(cam_debug, dvb_ca_en50221_debug, int, 0644);
+MODULE_PARM_DESC(cam_debug, "enable verbose debug messages");
+
#define dprintk if (dvb_ca_en50221_debug) printk
#define INIT_TIMEOUT_SECS 5
int link_buf_size;
/* semaphore for syncing access to slot structure */
- struct semaphore sem;
+ struct rw_semaphore sem;
/* buffer for incoming packets */
struct dvb_ringbuffer rx_buffer;
{
int i;
- if (hlen < nlen) return NULL;
+ if (hlen < nlen)
+ return NULL;
for(i=0; i<= hlen - nlen; i++) {
- if (!strncmp(haystack+i, needle, nlen)) return haystack+i;
+ if (!strncmp(haystack + i, needle, nlen))
+ return haystack + i;
}
return NULL;
static int dvb_ca_en50221_check_camstatus(struct dvb_ca_private* ca, int slot)
{
int slot_status;
- int status;
int cam_present_now;
int cam_changed;
}
/* poll mode */
- if ((status = down_interruptible(&ca->slot_info[slot].sem)) != 0) return status;
- slot_status = ca->pub->poll_slot_status(ca->pub, slot);
- up(&ca->slot_info[slot].sem);
+ slot_status = ca->pub->poll_slot_status(ca->pub, slot, ca->open);
cam_present_now = (slot_status & DVB_CA_EN50221_POLL_CAM_PRESENT) ? 1: 0;
cam_changed = (slot_status & DVB_CA_EN50221_POLL_CAM_CHANGED) ? 1: 0;
*
* @return 0 on success, nonzero on error.
*/
-static int dvb_ca_en50221_wait_if_status(struct dvb_ca_private* ca, int slot, u8 waitfor, int timeout_hz)
+static int dvb_ca_en50221_wait_if_status(struct dvb_ca_private *ca, int slot,
+ u8 waitfor, int timeout_hz)
{
unsigned long timeout;
unsigned long start;
while(1) {
/* read the status and check for error */
int res = ca->pub->read_cam_control(ca->pub, slot, CTRLIF_STATUS);
- if (res < 0) return -EIO;
+ if (res < 0)
+ return -EIO;
/* if we got the flags, it was successful! */
if (res & waitfor) {
}
/* wait for a bit */
- dvb_delay(1);
+ msleep(1);
}
dprintk("%s failed timeout:%lu\n", __FUNCTION__, jiffies - start);
/* we'll be determining these during this function */
ca->slot_info[slot].da_irq_supported = 0;
- /* reset the link interface. Note CAM IRQs are disabled */
- if ((ret = ca->pub->write_cam_control(ca->pub, slot, CTRLIF_COMMAND, CMDREG_RS)) != 0) return ret;
- if ((ret = dvb_ca_en50221_wait_if_status(ca, slot, STATUSREG_FR, HZ/10)) != 0) return ret;
-
/* set the host link buffer size temporarily. it will be overwritten with the
* real negotiated size later. */
ca->slot_info[slot].link_buf_size = 2;
/* read the buffer size from the CAM */
- if ((ret = ca->pub->write_cam_control(ca->pub, slot, CTRLIF_COMMAND, IRQEN | CMDREG_SR)) != 0) return ret;
- if ((ret = dvb_ca_en50221_wait_if_status(ca, slot, STATUSREG_DA, HZ/10)) != 0) return ret;
- if ((ret = dvb_ca_en50221_read_data(ca, slot, buf, 2)) != 2) return -EIO;
- if ((ret = ca->pub->write_cam_control(ca->pub, slot, CTRLIF_COMMAND, IRQEN)) != 0) return ret;
+ if ((ret = ca->pub->write_cam_control(ca->pub, slot, CTRLIF_COMMAND, IRQEN | CMDREG_SR)) != 0)
+ return ret;
+ if ((ret = dvb_ca_en50221_wait_if_status(ca, slot, STATUSREG_DA, HZ / 10)) != 0)
+ return ret;
+ if ((ret = dvb_ca_en50221_read_data(ca, slot, buf, 2)) != 2)
+ return -EIO;
+ if ((ret = ca->pub->write_cam_control(ca->pub, slot, CTRLIF_COMMAND, IRQEN)) != 0)
+ return ret;
/* store it, and choose the minimum of our buffer and the CAM's buffer size */
buf_size = (buf[0] << 8) | buf[1];
- if (buf_size > HOST_LINK_BUF_SIZE) buf_size = HOST_LINK_BUF_SIZE;
+ if (buf_size > HOST_LINK_BUF_SIZE)
+ buf_size = HOST_LINK_BUF_SIZE;
ca->slot_info[slot].link_buf_size = buf_size;
buf[0] = buf_size >> 8;
buf[1] = buf_size & 0xff;
dprintk("Chosen link buffer size of %i\n", buf_size);
/* write the buffer size to the CAM */
- if ((ret = ca->pub->write_cam_control(ca->pub, slot, CTRLIF_COMMAND, IRQEN | CMDREG_SW)) != 0) return ret;
- if ((ret = dvb_ca_en50221_wait_if_status(ca, slot, STATUSREG_FR, HZ/10)) != 0) return ret;
- if ((ret = dvb_ca_en50221_write_data(ca, slot, buf, 2)) != 2) return -EIO;
- if ((ret = ca->pub->write_cam_control(ca->pub, slot, CTRLIF_COMMAND, IRQEN)) != 0) return ret;
+ if ((ret = ca->pub->write_cam_control(ca->pub, slot, CTRLIF_COMMAND, IRQEN | CMDREG_SW)) != 0)
+ return ret;
+ if ((ret = dvb_ca_en50221_wait_if_status(ca, slot, STATUSREG_FR, HZ / 10)) != 0)
+ return ret;
+ if ((ret = dvb_ca_en50221_write_data(ca, slot, buf, 2)) != 2)
+ return -EIO;
+ if ((ret = ca->pub->write_cam_control(ca->pub, slot, CTRLIF_COMMAND, IRQEN)) != 0)
+ return ret;
/* success */
return 0;
int _address = *address;
/* grab the next tuple length and type */
- if ((_tupleType = ca->pub->read_attribute_mem(ca->pub, slot, _address)) < 0) return _tupleType;
- if ((_tupleLength = ca->pub->read_attribute_mem(ca->pub, slot, _address+2)) < 0) return _tupleLength;
+ if ((_tupleType = ca->pub->read_attribute_mem(ca->pub, slot, _address)) < 0)
+ return _tupleType;
+ if (_tupleType == 0xff) {
+ dprintk("END OF CHAIN TUPLE type:0x%x\n", _tupleType);
+ *address += 2;
+ *tupleType = _tupleType;
+ *tupleLength = 0;
+ return 0;
+ }
+ if ((_tupleLength = ca->pub->read_attribute_mem(ca->pub, slot, _address + 2)) < 0)
+ return _tupleLength;
_address += 4;
dprintk("TUPLE type:0x%x length:%i\n", _tupleType, _tupleLength);
/* read in the whole tuple */
for(i=0; i< _tupleLength; i++) {
tuple[i] = ca->pub->read_attribute_mem(ca->pub, slot, _address + (i*2));
- dprintk(" 0x%02x: 0x%02x %c\n", i, tuple[i] & 0xff, ((tuple[i] > 31) && (tuple[i] < 127)) ? tuple[i] : '.');
+ dprintk(" 0x%02x: 0x%02x %c\n",
+ i, tuple[i] & 0xff,
+ ((tuple[i] > 31) && (tuple[i] < 127)) ? tuple[i] : '.');
}
_address += (_tupleLength*2);
// CISTPL_DEVICE_0A
- if ((status = dvb_ca_en50221_read_tuple(ca, slot, &address, &tupleType, &tupleLength, tuple)) < 0) return status;
- if (tupleType != 0x1D) return -EINVAL;
+ if ((status =
+ dvb_ca_en50221_read_tuple(ca, slot, &address, &tupleType, &tupleLength, tuple)) < 0)
+ return status;
+ if (tupleType != 0x1D)
+ return -EINVAL;
// CISTPL_DEVICE_0C
- if ((status = dvb_ca_en50221_read_tuple(ca, slot, &address, &tupleType, &tupleLength, tuple)) < 0) return status;
- if (tupleType != 0x1C) return -EINVAL;
+ if ((status =
+ dvb_ca_en50221_read_tuple(ca, slot, &address, &tupleType, &tupleLength, tuple)) < 0)
+ return status;
+ if (tupleType != 0x1C)
+ return -EINVAL;
// CISTPL_VERS_1
- if ((status = dvb_ca_en50221_read_tuple(ca, slot, &address, &tupleType, &tupleLength, tuple)) < 0) return status;
- if (tupleType != 0x15) return -EINVAL;
+ if ((status =
+ dvb_ca_en50221_read_tuple(ca, slot, &address, &tupleType, &tupleLength, tuple)) < 0)
+ return status;
+ if (tupleType != 0x15)
+ return -EINVAL;
// CISTPL_MANFID
- if ((status = dvb_ca_en50221_read_tuple(ca, slot, &address, &tupleType, &tupleLength, tuple)) < 0) return status;
- if (tupleType != 0x20) return -EINVAL;
- if (tupleLength != 4) return -EINVAL;
+ if ((status = dvb_ca_en50221_read_tuple(ca, slot, &address, &tupleType,
+ &tupleLength, tuple)) < 0)
+ return status;
+ if (tupleType != 0x20)
+ return -EINVAL;
+ if (tupleLength != 4)
+ return -EINVAL;
manfid = (tuple[1] << 8) | tuple[0];
devid = (tuple[3] << 8) | tuple[2];
// CISTPL_CONFIG
- if ((status = dvb_ca_en50221_read_tuple(ca, slot, &address, &tupleType, &tupleLength, tuple)) < 0) return status;
- if (tupleType != 0x1A) return -EINVAL;
- if (tupleLength < 3) return -EINVAL;
+ if ((status = dvb_ca_en50221_read_tuple(ca, slot, &address, &tupleType,
+ &tupleLength, tuple)) < 0)
+ return status;
+ if (tupleType != 0x1A)
+ return -EINVAL;
+ if (tupleLength < 3)
+ return -EINVAL;
/* extract the configbase */
rasz = tuple[0] & 3;
- if (tupleLength < (3 + rasz + 14)) return -EINVAL;
+ if (tupleLength < (3 + rasz + 14))
+ return -EINVAL;
ca->slot_info[slot].config_base = 0;
for(i=0; i< rasz+1; i++) {
ca->slot_info[slot].config_base |= (tuple[2+i] << (8*i));
/* check it contains the correct DVB string */
dvb_str = findstr(tuple, tupleLength, "DVB_CI_V", 8);
- if (dvb_str == NULL) return -EINVAL;
- if (tupleLength < ((dvb_str - (char*) tuple) + 12)) return -EINVAL;
+ if (dvb_str == NULL)
+ return -EINVAL;
+ if (tupleLength < ((dvb_str - (char *) tuple) + 12))
+ return -EINVAL;
/* is it a version we support? */
if (strncmp(dvb_str + 8, "1.00", 4)) {
- printk("dvb_ca: Unsupported DVB CAM module version %c%c%c%c\n",
- dvb_str[8], dvb_str[9], dvb_str[10], dvb_str[11]);
+ printk("dvb_ca adapter %d: Unsupported DVB CAM module version %c%c%c%c\n",
+ ca->dvbdev->adapter->num, dvb_str[8], dvb_str[9], dvb_str[10], dvb_str[11]);
return -EINVAL;
}
/* process the CFTABLE_ENTRY tuples, and any after those */
while((!end_chain) && (address < 0x1000)) {
- if ((status = dvb_ca_en50221_read_tuple(ca, slot, &address, &tupleType, &tupleLength, tuple)) < 0) return status;
+ if ((status = dvb_ca_en50221_read_tuple(ca, slot, &address, &tupleType,
+ &tupleLength, tuple)) < 0)
+ return status;
switch(tupleType) {
case 0x1B: // CISTPL_CFTABLE_ENTRY
- if (tupleLength < (2+11+17)) break;
+ if (tupleLength < (2 + 11 + 17))
+ break;
/* if we've already parsed one, just use it */
- if (got_cftableentry) break;
+ if (got_cftableentry)
+ break;
/* get the config option */
ca->slot_info[slot].config_option = tuple[0] & 0x3f;
/* OK, check it contains the correct strings */
if ((findstr(tuple, tupleLength, "DVB_HOST", 8) == NULL) ||
- (findstr(tuple, tupleLength, "DVB_CI_MODULE", 13) == NULL)) break;
+ (findstr(tuple, tupleLength, "DVB_CI_MODULE", 13) == NULL))
+ break;
got_cftableentry = 1;
break;
break;
default: /* Unknown tuple type - just skip this tuple and move to the next one */
- dprintk("dvb_ca: Skipping unknown tuple type:0x%x length:0x%x\n", tupleType, tupleLength);
+ dprintk("dvb_ca: Skipping unknown tuple type:0x%x length:0x%x\n", tupleType,
+ tupleLength);
break;
}
}
- if ((address > 0x1000) || (!got_cftableentry)) return -EINVAL;
+ if ((address > 0x1000) || (!got_cftableentry))
+ return -EINVAL;
dprintk("Valid DVB CAM detected MANID:%x DEVID:%x CONFIGBASE:0x%x CONFIGOPTION:0x%x\n",
- manfid, devid,
- ca->slot_info[slot].config_base,
- ca->slot_info[slot].config_option);
+ manfid, devid, ca->slot_info[slot].config_base, ca->slot_info[slot].config_option);
// success!
return 0;
dprintk ("%s\n", __FUNCTION__);
/* set the config option */
- ca->pub->write_attribute_mem(ca->pub, slot, ca->slot_info[slot].config_base, ca->slot_info[slot].config_option);
+ ca->pub->write_attribute_mem(ca->pub, slot,
+ ca->slot_info[slot].config_base,
+ ca->slot_info[slot].config_option);
/* check it */
configoption = ca->pub->read_attribute_mem(ca->pub, slot, ca->slot_info[slot].config_base);
dprintk ("%s\n", __FUNCTION__);
- /* acquire the slot */
- if ((status = down_interruptible(&ca->slot_info[slot].sem)) != 0) return status;
-
/* check if we have space for a link buf in the rx_buffer */
if (ebuf == NULL) {
- if (dvb_ringbuffer_free(&ca->slot_info[slot].rx_buffer) <
- (ca->slot_info[slot].link_buf_size + DVB_RINGBUFFER_PKTHDRSIZE)) {
+ int buf_free;
+
+ down_read(&ca->slot_info[slot].sem);
+ if (ca->slot_info[slot].rx_buffer.data == NULL) {
+ up_read(&ca->slot_info[slot].sem);
+ status = -EIO;
+ goto exit;
+ }
+ buf_free = dvb_ringbuffer_free(&ca->slot_info[slot].rx_buffer);
+ up_read(&ca->slot_info[slot].sem);
+
+ if (buf_free < (ca->slot_info[slot].link_buf_size + DVB_RINGBUFFER_PKTHDRSIZE)) {
status = -EAGAIN;
goto exit;
}
}
- /* reset the interface if there's been a tx error */
- if ((status = ca->pub->read_cam_control(ca->pub, slot, CTRLIF_STATUS)) < 0) goto exit;
- if (status & STATUSREG_TXERR) {
- ca->slot_info[slot].slot_state = DVB_CA_SLOTSTATE_LINKINIT;
- status = -EIO;
- goto exit;
- }
+ /* check if there is data available */
+ if ((status = ca->pub->read_cam_control(ca->pub, slot, CTRLIF_STATUS)) < 0)
+ goto exit;
if (!(status & STATUSREG_DA)) {
/* no data */
status = 0;
}
/* read the amount of data */
- if ((status = ca->pub->read_cam_control(ca->pub, slot, CTRLIF_SIZE_HIGH)) < 0) goto exit;
+ if ((status = ca->pub->read_cam_control(ca->pub, slot, CTRLIF_SIZE_HIGH)) < 0)
+ goto exit;
bytes_read = status << 8;
- if ((status = ca->pub->read_cam_control(ca->pub, slot, CTRLIF_SIZE_LOW)) < 0) goto exit;
+ if ((status = ca->pub->read_cam_control(ca->pub, slot, CTRLIF_SIZE_LOW)) < 0)
+ goto exit;
bytes_read |= status;
/* check it will fit */
if (ebuf == NULL) {
if (bytes_read > ca->slot_info[slot].link_buf_size) {
- printk("dvb_ca: CAM tried to send a buffer larger than the link buffer size!\n");
+ printk("dvb_ca adapter %d: CAM tried to send a buffer larger than the link buffer size (%i > %i)!\n",
+ ca->dvbdev->adapter->num, bytes_read, ca->slot_info[slot].link_buf_size);
ca->slot_info[slot].slot_state = DVB_CA_SLOTSTATE_LINKINIT;
status = -EIO;
goto exit;
}
if (bytes_read < 2) {
- printk("dvb_ca: CAM sent a buffer that was less than 2 bytes!\n");
+ printk("dvb_ca adapter %d: CAM sent a buffer that was less than 2 bytes!\n",
+ ca->dvbdev->adapter->num);
ca->slot_info[slot].slot_state = DVB_CA_SLOTSTATE_LINKINIT;
status = -EIO;
goto exit;
}
} else {
if (bytes_read > ecount) {
- printk("dvb_ca: CAM tried to send a buffer larger than the ecount size!\n");
+ printk("dvb_ca adapter %d: CAM tried to send a buffer larger than the ecount size!\n",
+ ca->dvbdev->adapter->num);
status = -EIO;
goto exit;
}
/* fill the buffer */
for(i=0; i < bytes_read; i++) {
/* read byte and check */
- if ((status = ca->pub->read_cam_control(ca->pub, slot, CTRLIF_DATA)) < 0) goto exit;
+ if ((status = ca->pub->read_cam_control(ca->pub, slot, CTRLIF_DATA)) < 0)
+ goto exit;
/* OK, store it in the buffer */
buf[i] = status;
}
- /* check for read error (RE should now go to 0) */
- if ((status = ca->pub->read_cam_control(ca->pub, slot, CTRLIF_STATUS)) < 0) goto exit;
+ /* check for read error (RE should now be 0) */
+ if ((status = ca->pub->read_cam_control(ca->pub, slot, CTRLIF_STATUS)) < 0)
+ goto exit;
if (status & STATUSREG_RE) {
+ ca->slot_info[slot].slot_state = DVB_CA_SLOTSTATE_LINKINIT;
status = -EIO;
goto exit;
}
/* OK, add it to the receive buffer, or copy into external buffer if supplied */
if (ebuf == NULL) {
+ down_read(&ca->slot_info[slot].sem);
+ if (ca->slot_info[slot].rx_buffer.data == NULL) {
+ up_read(&ca->slot_info[slot].sem);
+ status = -EIO;
+ goto exit;
+ }
dvb_ringbuffer_pkt_write(&ca->slot_info[slot].rx_buffer, buf, bytes_read);
+ up_read(&ca->slot_info[slot].sem);
} else {
memcpy(ebuf, buf, bytes_read);
}
+ dprintk("Received CA packet for slot %i connection id 0x%x last_frag:%i size:0x%x\n", slot,
+ buf[0], (buf[1] & 0x80) == 0, bytes_read);
+
/* wake up readers when a last_fragment is received */
if ((buf[1] & 0x80) == 0x00) {
wake_up_interruptible(&ca->wait_queue);
status = bytes_read;
exit:
- up(&ca->slot_info[slot].sem);
return status;
}
// sanity check
- if (bytes_write > ca->slot_info[slot].link_buf_size) return -EINVAL;
-
- /* acquire the slot */
- if ((status = down_interruptible(&ca->slot_info[slot].sem)) != 0) return status;
-
- /* reset the interface if there's been a tx error */
- if ((status = ca->pub->read_cam_control(ca->pub, slot, CTRLIF_STATUS)) < 0) goto exitnowrite;
- if (status & STATUSREG_TXERR) {
- ca->slot_info[slot].slot_state = DVB_CA_SLOTSTATE_LINKINIT;
- status = -EIO;
- goto exitnowrite;
- }
+ if (bytes_write > ca->slot_info[slot].link_buf_size)
+ return -EINVAL;
- /* check if interface is actually waiting for us to read from it */
- if (status & STATUSREG_DA) {
+ /* check if interface is actually waiting for us to read from it, or if a read is in progress */
+ if ((status = ca->pub->read_cam_control(ca->pub, slot, CTRLIF_STATUS)) < 0)
+ goto exitnowrite;
+ if (status & (STATUSREG_DA|STATUSREG_RE)) {
status = -EAGAIN;
goto exitnowrite;
}
/* OK, set HC bit */
- if ((status = ca->pub->write_cam_control(ca->pub, slot, CTRLIF_COMMAND, IRQEN | CMDREG_HC)) != 0) goto exit;
+ if ((status = ca->pub->write_cam_control(ca->pub, slot, CTRLIF_COMMAND,
+ IRQEN | CMDREG_HC)) != 0)
+ goto exit;
/* check if interface is still free */
- if ((status = ca->pub->read_cam_control(ca->pub, slot, CTRLIF_STATUS)) < 0) goto exit;
+ if ((status = ca->pub->read_cam_control(ca->pub, slot, CTRLIF_STATUS)) < 0)
+ goto exit;
if (!(status & STATUSREG_FR)) {
/* it wasn't free => try again later */
status = -EAGAIN;
}
/* send the amount of data */
- if ((status = ca->pub->write_cam_control(ca->pub, slot, CTRLIF_SIZE_HIGH, bytes_write >> 8)) != 0) goto exit;
- if ((status = ca->pub->write_cam_control(ca->pub, slot, CTRLIF_SIZE_LOW, bytes_write & 0xff)) != 0) goto exit;
+ if ((status = ca->pub->write_cam_control(ca->pub, slot, CTRLIF_SIZE_HIGH, bytes_write >> 8)) != 0)
+ goto exit;
+ if ((status = ca->pub->write_cam_control(ca->pub, slot, CTRLIF_SIZE_LOW,
+ bytes_write & 0xff)) != 0)
+ goto exit;
/* send the buffer */
for(i=0; i < bytes_write; i++) {
- if ((status = ca->pub->write_cam_control(ca->pub, slot, CTRLIF_DATA, buf[i])) != 0) goto exit;
+ if ((status = ca->pub->write_cam_control(ca->pub, slot, CTRLIF_DATA, buf[i])) != 0)
+ goto exit;
}
/* check for write error (WE should now be 0) */
- if ((status = ca->pub->read_cam_control(ca->pub, slot, CTRLIF_STATUS)) < 0) goto exit;
+ if ((status = ca->pub->read_cam_control(ca->pub, slot, CTRLIF_STATUS)) < 0)
+ goto exit;
if (status & STATUSREG_WE) {
+ ca->slot_info[slot].slot_state = DVB_CA_SLOTSTATE_LINKINIT;
status = -EIO;
goto exit;
}
status = bytes_write;
+ dprintk("Wrote CA packet for slot %i, connection id 0x%x last_frag:%i size:0x%x\n", slot,
+ buf[0], (buf[1] & 0x80) == 0, bytes_write);
+
exit:
ca->pub->write_cam_control(ca->pub, slot, CTRLIF_COMMAND, IRQEN);
exitnowrite:
- up(&ca->slot_info[slot].sem);
return status;
}
+EXPORT_SYMBOL(dvb_ca_en50221_camchange_irq);
*/
static int dvb_ca_en50221_slot_shutdown(struct dvb_ca_private* ca, int slot)
{
- int status;
-
dprintk ("%s\n", __FUNCTION__);
- if ((status = down_interruptible(&ca->slot_info[slot].sem)) != 0) return status;
+ down_write(&ca->slot_info[slot].sem);
ca->pub->slot_shutdown(ca->pub, slot);
ca->slot_info[slot].slot_state = DVB_CA_SLOTSTATE_NONE;
- if (ca->slot_info[slot].rx_buffer.data) vfree(ca->slot_info[slot].rx_buffer.data);
+ if (ca->slot_info[slot].rx_buffer.data)
+ vfree(ca->slot_info[slot].rx_buffer.data);
ca->slot_info[slot].rx_buffer.data = NULL;
- up(&ca->slot_info[slot].sem);
+ up_write(&ca->slot_info[slot].sem);
/* need to wake up all processes to check if they're now
trying to write to a defunct CAM */
/* success */
return 0;
}
+EXPORT_SYMBOL(dvb_ca_en50221_camready_irq);
/**
atomic_inc(&ca->slot_info[slot].camchange_count);
dvb_ca_en50221_thread_wakeup(ca);
}
+EXPORT_SYMBOL(dvb_ca_en50221_frda_irq);
/**
break;
case DVB_CA_SLOTSTATE_RUNNING:
- flags = ca->pub->read_cam_control(pubca, slot, CTRLIF_STATUS);
- if (flags & STATUSREG_DA) {
- dvb_ca_en50221_thread_wakeup(ca);
- }
+ if (ca->open)
+ dvb_ca_en50221_read_data(ca, slot, NULL, 0);
break;
}
}
ca->wakeup = 0;
return 1;
}
- if (ca->exit) return 1;
+ if (ca->exit)
+ return 1;
return 0;
}
break;
}
- if (delay < curdelay) curdelay = delay;
+ if (delay < curdelay)
+ curdelay = delay;
}
ca->delay = curdelay;
char name[15];
int slot;
int flags;
+ int status;
int pktcount;
void* rxbuf;
/* setup kernel thread */
snprintf(name, sizeof(name), "kdvb-ca-%i:%i", ca->dvbdev->adapter->num, ca->dvbdev->id);
- dvb_kernel_thread_setup(name);
+
+ lock_kernel ();
+ daemonize (name);
+ sigfillset (¤t->blocked);
+ unlock_kernel ();
/* choose the correct initial delay */
dvb_ca_en50221_thread_update_delay(ca);
while(!ca->exit) {
/* sleep for a bit */
if (!ca->wakeup) {
- flags = wait_event_interruptible_timeout(ca->thread_queue, dvb_ca_en50221_thread_should_wakeup(ca), ca->delay);
+ flags = wait_event_interruptible_timeout(ca->thread_queue,
+ dvb_ca_en50221_thread_should_wakeup(ca),
+ ca->delay);
if ((flags == -ERESTARTSYS) || ca->exit) {
/* got signal or quitting */
break;
// check the cam status + deal with CAMCHANGEs
while(dvb_ca_en50221_check_camstatus(ca, slot)) {
/* clear down an old CI slot if necessary */
- if (ca->slot_info[slot].slot_state != DVB_CA_SLOTSTATE_NONE) dvb_ca_en50221_slot_shutdown(ca, slot);
+ if (ca->slot_info[slot].slot_state != DVB_CA_SLOTSTATE_NONE)
+ dvb_ca_en50221_slot_shutdown(ca, slot);
/* if a CAM is NOW present, initialise it */
if (ca->slot_info[slot].camchange_type == DVB_CA_EN50221_CAMCHANGE_INSERTED) {
case DVB_CA_SLOTSTATE_WAITREADY:
if (time_after(jiffies, ca->slot_info[slot].timeout)) {
- printk("dvb_ca: PC card did not respond :(\n");
+ printk("dvb_ca adaptor %d: PC card did not respond :(\n",
+ ca->dvbdev->adapter->num);
ca->slot_info[slot].slot_state = DVB_CA_SLOTSTATE_INVALID;
dvb_ca_en50221_thread_update_delay(ca);
break;
break;
case DVB_CA_SLOTSTATE_VALIDATE:
- if (dvb_ca_en50221_parse_attributes(ca, slot) != 0) {
- printk("dvb_ca: Invalid PC card inserted :(\n");
+ if (dvb_ca_en50221_parse_attributes(ca, slot)
+ != 0) {
+ printk("dvb_ca adapter %d: Invalid PC card inserted :(\n",
+ ca->dvbdev->adapter->num);
ca->slot_info[slot].slot_state = DVB_CA_SLOTSTATE_INVALID;
- dvb_ca_en50221_thread_update_delay(ca);
+ dvb_ca_en50221_thread_update_delay(ca);
break;
}
if (dvb_ca_en50221_set_configoption(ca, slot) != 0) {
- printk("dvb_ca: Unable to initialise CAM :(\n");
+ printk("dvb_ca adapter %d: Unable to initialise CAM :(\n",
+ ca->dvbdev->adapter->num);
+ ca->slot_info[slot].slot_state = DVB_CA_SLOTSTATE_INVALID;
+ dvb_ca_en50221_thread_update_delay(ca);
+ break;
+ }
+ if (ca->pub->write_cam_control(ca->pub, slot,
+ CTRLIF_COMMAND, CMDREG_RS) != 0) {
+ printk("dvb_ca adapter %d: Unable to reset CAM IF\n",
+ ca->dvbdev->adapter->num);
ca->slot_info[slot].slot_state = DVB_CA_SLOTSTATE_INVALID;
dvb_ca_en50221_thread_update_delay(ca);
break;
case DVB_CA_SLOTSTATE_WAITFR:
if (time_after(jiffies, ca->slot_info[slot].timeout)) {
- printk("dvb_ca: DVB CAM did not respond :(\n");
+ printk("dvb_ca adapter %d: DVB CAM did not respond :(\n",
+ ca->dvbdev->adapter->num);
ca->slot_info[slot].slot_state = DVB_CA_SLOTSTATE_INVALID;
dvb_ca_en50221_thread_update_delay(ca);
break;
case DVB_CA_SLOTSTATE_LINKINIT:
if (dvb_ca_en50221_link_init(ca, slot) != 0) {
- printk("dvb_ca: DVB CAM link initialisation failed :(\n");
+ printk("dvb_ca adapter %d: DVB CAM link initialisation failed :(\n", ca->dvbdev->adapter->num);
ca->slot_info[slot].slot_state = DVB_CA_SLOTSTATE_INVALID;
dvb_ca_en50221_thread_update_delay(ca);
break;
rxbuf = vmalloc(RX_BUFFER_SIZE);
if (rxbuf == NULL) {
- printk("dvb_ca: Unable to allocate CAM rx buffer :(\n");
+ printk("dvb_ca adapter %d: Unable to allocate CAM rx buffer :(\n", ca->dvbdev->adapter->num);
ca->slot_info[slot].slot_state = DVB_CA_SLOTSTATE_INVALID;
dvb_ca_en50221_thread_update_delay(ca);
break;
}
+ down_write(&ca->slot_info[slot].sem);
dvb_ringbuffer_init(&ca->slot_info[slot].rx_buffer, rxbuf, RX_BUFFER_SIZE);
+ up_write(&ca->slot_info[slot].sem);
ca->pub->slot_ts_enable(ca->pub, slot);
ca->slot_info[slot].slot_state = DVB_CA_SLOTSTATE_RUNNING;
dvb_ca_en50221_thread_update_delay(ca);
- printk("dvb_ca: DVB CAM detected and initialised successfully\n");
+ printk("dvb_ca adapter %d: DVB CAM detected and initialised successfully\n", ca->dvbdev->adapter->num);
break;
case DVB_CA_SLOTSTATE_RUNNING:
- if (!ca->open) break;
+ if (!ca->open)
+ continue;
+ // no need to poll if the CAM supports IRQs
+ if (ca->slot_info[slot].da_irq_supported)
+ break;
+
+ // poll mode
pktcount = 0;
- while(dvb_ca_en50221_read_data(ca, slot, NULL, 0) > 0) {
- if (!ca->open) break;
+ while ((status = dvb_ca_en50221_read_data(ca, slot, NULL, 0)) > 0) {
+ if (!ca->open)
+ break;
/* if a CAMCHANGE occurred at some point, do not do any more processing of this slot */
if (dvb_ca_en50221_check_camstatus(ca, slot)) {
*
* @return 0 on success, <0 on error.
*/
-static int dvb_ca_en50221_io_do_ioctl(struct inode *inode, struct file *file, unsigned int cmd, void *parg)
+static int dvb_ca_en50221_io_do_ioctl(struct inode *inode, struct file *file,
+ unsigned int cmd, void *parg)
{
struct dvb_device* dvbdev=(struct dvb_device*) file->private_data;
struct dvb_ca_private* ca = (struct dvb_ca_private*) dvbdev->priv;
if (ca->slot_info[slot].slot_state != DVB_CA_SLOTSTATE_NONE) {
dvb_ca_en50221_slot_shutdown(ca, slot);
if (ca->flags & DVB_CA_EN50221_FLAG_IRQ_CAMCHANGE)
- dvb_ca_en50221_camchange_irq(ca->pub, slot, DVB_CA_EN50221_CAMCHANGE_INSERTED);
+ dvb_ca_en50221_camchange_irq(ca->pub,
+ slot,
+ DVB_CA_EN50221_CAMCHANGE_INSERTED);
}
}
ca->next_read_slot = 0;
dvb_ca_en50221_thread_wakeup(ca);
break;
- case CA_GET_CAP:
- {
+ case CA_GET_CAP: {
struct ca_caps *caps = (struct ca_caps*) parg;
caps->slot_num=ca->slot_count;
break;
}
-
- case CA_GET_SLOT_INFO:
- {
+ case CA_GET_SLOT_INFO: {
struct ca_slot_info *info=(struct ca_slot_info *)parg;
if ((info->num > ca->slot_count) || (info->num < 0))
info->type = CA_CI_LINK;
info->flags = 0;
- if ((ca->slot_info[info->num].slot_state != DVB_CA_SLOTSTATE_NONE) &&
- (ca->slot_info[info->num].slot_state != DVB_CA_SLOTSTATE_INVALID)) {
+ if ((ca->slot_info[info->num].slot_state != DVB_CA_SLOTSTATE_NONE)
+ && (ca->slot_info[info->num].slot_state != DVB_CA_SLOTSTATE_INVALID)) {
info->flags = CA_CI_MODULE_PRESENT;
}
if (ca->slot_info[info->num].slot_state == DVB_CA_SLOTSTATE_RUNNING) {
*
* @return 0 on success, <0 on error.
*/
-static int dvb_ca_en50221_io_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
+static int dvb_ca_en50221_io_ioctl(struct inode *inode, struct file *file,
+ unsigned int cmd, unsigned long arg)
{
return dvb_usercopy(inode, file, cmd, arg, dvb_ca_en50221_io_do_ioctl);
}
*
* @return Number of bytes read, or <0 on error.
*/
-static ssize_t dvb_ca_en50221_io_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos)
+static ssize_t dvb_ca_en50221_io_write(struct file *file,
+ const char __user * buf, size_t count, loff_t * ppos)
{
struct dvb_device *dvbdev=(struct dvb_device *) file->private_data;
struct dvb_ca_private *ca=(struct dvb_ca_private*) dvbdev->priv;
int status;
char fragbuf[HOST_LINK_BUF_SIZE];
int fragpos = 0;
- size_t fraglen;
+ int fraglen;
unsigned long timeout;
int written;
dprintk ("%s\n", __FUNCTION__);
/* Incoming packet has a 2 byte header. hdr[0] = slot_id, hdr[1] = connection_id */
- if (count < 2) return -EINVAL;
+ if (count < 2)
+ return -EINVAL;
/* extract slot & connection id */
- if (copy_from_user(&slot, buf, 1)) return -EFAULT;
- if (copy_from_user(&connection_id, buf+1, 1)) return -EFAULT;
+ if (copy_from_user(&slot, buf, 1))
+ return -EFAULT;
+ if (copy_from_user(&connection_id, buf + 1, 1))
+ return -EFAULT;
buf+=2;
count-=2;
/* check if the slot is actually running */
- if (ca->slot_info[slot].slot_state != DVB_CA_SLOTSTATE_RUNNING) return -EINVAL;
+ if (ca->slot_info[slot].slot_state != DVB_CA_SLOTSTATE_RUNNING)
+ return -EINVAL;
/* fragment the packets & store in the buffer */
while(fragpos < count) {
fraglen = ca->slot_info[slot].link_buf_size - 2;
- if ((count - fragpos) < fraglen) fraglen = count - fragpos;
+ if ((count - fragpos) < fraglen)
+ fraglen = count - fragpos;
fragbuf[0] = connection_id;
fragbuf[1] = ((fragpos + fraglen) < count) ? 0x80 : 0x00;
- if ((status = copy_from_user(fragbuf+2, buf+fragpos, fraglen)) != 0) goto exit;
+ if ((status = copy_from_user(fragbuf + 2, buf + fragpos, fraglen)) != 0)
+ goto exit;
timeout = jiffies + HZ/2;
written = 0;
while(!time_after(jiffies, timeout)) {
+ /* check the CAM hasn't been removed/reset in the meantime */
+ if (ca->slot_info[slot].slot_state != DVB_CA_SLOTSTATE_RUNNING) {
+ status = -EIO;
+ goto exit;
+ }
+
status = dvb_ca_en50221_write_data(ca, slot, fragbuf, fraglen+2);
if (status == (fraglen+2)) {
written = 1;
break;
}
- if (status != -EAGAIN) goto exit;
+ if (status != -EAGAIN)
+ goto exit;
- dvb_delay(1);
+ msleep(1);
}
if (!written) {
status = -EIO;
int slot;
int slot_count = 0;
int idx;
- size_t fraglen;
+ int fraglen;
int connection_id = -1;
int found = 0;
u8 hdr[2];
slot = ca->next_read_slot;
while((slot_count < ca->slot_count) && (!found)) {
- if (ca->slot_info[slot].slot_state != DVB_CA_SLOTSTATE_RUNNING) goto nextslot;
+ if (ca->slot_info[slot].slot_state != DVB_CA_SLOTSTATE_RUNNING)
+ goto nextslot;
- if ((*result = down_interruptible(&ca->slot_info[slot].sem)) != 0) return 1;
+ down_read(&ca->slot_info[slot].sem);
+
+ if (ca->slot_info[slot].rx_buffer.data == NULL) {
+ up_read(&ca->slot_info[slot].sem);
+ return 0;
+ }
idx = dvb_ringbuffer_pkt_next(&ca->slot_info[slot].rx_buffer, -1, &fraglen);
while(idx != -1) {
dvb_ringbuffer_pkt_read(&ca->slot_info[slot].rx_buffer, idx, 0, hdr, 2, 0);
- if (connection_id == -1) connection_id = hdr[0];
+ if (connection_id == -1)
+ connection_id = hdr[0];
if ((hdr[0] == connection_id) && ((hdr[1] & 0x80) == 0)) {
*_slot = slot;
found = 1;
idx = dvb_ringbuffer_pkt_next(&ca->slot_info[slot].rx_buffer, idx, &fraglen);
}
- if (!found) up(&ca->slot_info[slot].sem);
+ if (!found)
+ up_read(&ca->slot_info[slot].sem);
nextslot:
slot = (slot + 1) % ca->slot_count;
*
* @return Number of bytes read, or <0 on error.
*/
-static ssize_t dvb_ca_en50221_io_read(struct file *file, char __user *buf, size_t count, loff_t *ppos)
+static ssize_t dvb_ca_en50221_io_read(struct file *file, char __user * buf,
+ size_t count, loff_t * ppos)
{
struct dvb_device *dvbdev=(struct dvb_device *) file->private_data;
struct dvb_ca_private *ca=(struct dvb_ca_private*) dvbdev->priv;
dprintk ("%s\n", __FUNCTION__);
/* Outgoing packet has a 2 byte header. hdr[0] = slot_id, hdr[1] = connection_id */
- if (count < 2) return -EINVAL;
+ if (count < 2)
+ return -EINVAL;
/* wait for some data */
if ((status = dvb_ca_en50221_io_read_condition(ca, &result, &slot)) == 0) {
/* if we're in nonblocking mode, exit immediately */
- if (file->f_flags & O_NONBLOCK) return -EWOULDBLOCK;
+ if (file->f_flags & O_NONBLOCK)
+ return -EWOULDBLOCK;
/* wait for some data */
- status = wait_event_interruptible(ca->wait_queue, dvb_ca_en50221_io_read_condition(ca, &result, &slot));
+ status = wait_event_interruptible(ca->wait_queue,
+ dvb_ca_en50221_io_read_condition
+ (ca, &result, &slot));
}
if ((status < 0) || (result < 0)) {
- if (result) return result;
+ if (result)
+ return result;
return status;
}
pktlen = 2;
do {
if (idx == -1) {
- printk("dvb_ca: BUG: read packet ended before last_fragment encountered\n");
+ printk("dvb_ca adapter %d: BUG: read packet ended before last_fragment encountered\n", ca->dvbdev->adapter->num);
status = -EIO;
goto exit;
}
dvb_ringbuffer_pkt_read(&ca->slot_info[slot].rx_buffer, idx, 0, hdr, 2, 0);
- if (connection_id == -1) connection_id = hdr[0];
+ if (connection_id == -1)
+ connection_id = hdr[0];
if (hdr[0] == connection_id) {
if (pktlen < count) {
if ((pktlen + fraglen - 2) > count) {
fraglen -= 2;
}
- if ((status = dvb_ringbuffer_pkt_read(&ca->slot_info[slot].rx_buffer, idx, 2, buf + pktlen, fraglen, 1)) < 0) {
+ if ((status = dvb_ringbuffer_pkt_read(&ca->slot_info[slot].rx_buffer, idx, 2,
+ buf + pktlen, fraglen, 1)) < 0) {
goto exit;
}
pktlen += fraglen;
}
- if ((hdr[1] & 0x80) == 0) last_fragment = 1;
+ if ((hdr[1] & 0x80) == 0)
+ last_fragment = 1;
dispose = 1;
}
idx2 = dvb_ringbuffer_pkt_next(&ca->slot_info[slot].rx_buffer, idx, &fraglen);
- if (dispose) dvb_ringbuffer_pkt_dispose(&ca->slot_info[slot].rx_buffer, idx);
+ if (dispose)
+ dvb_ringbuffer_pkt_dispose(&ca->slot_info[slot].rx_buffer, idx);
idx = idx2;
dispose = 0;
} while (!last_fragment);
hdr[0] = slot;
hdr[1] = connection_id;
- if ((status = copy_to_user(buf, hdr, 2)) != 0) goto exit;
+ if ((status = copy_to_user(buf, hdr, 2)) != 0)
+ goto exit;
status = pktlen;
exit:
- up(&ca->slot_info[slot].sem);
+ up_read(&ca->slot_info[slot].sem);
return status;
}
dprintk ("%s\n", __FUNCTION__);
+ if (!try_module_get(ca->pub->owner))
+ return -EIO;
+
err=dvb_generic_open(inode, file);
if (err<0)
return err;
for(i=0; i< ca->slot_count; i++) {
+
if (ca->slot_info[i].slot_state == DVB_CA_SLOTSTATE_RUNNING) {
+ down_write(&ca->slot_info[i].sem);
+ if (ca->slot_info[i].rx_buffer.data != NULL) {
dvb_ringbuffer_flush(&ca->slot_info[i].rx_buffer);
+ }
+ up_write(&ca->slot_info[i].sem);
}
}
{
struct dvb_device *dvbdev=(struct dvb_device *) file->private_data;
struct dvb_ca_private *ca=(struct dvb_ca_private*) dvbdev->priv;
- int err;
+ int err = 0;
dprintk ("%s\n", __FUNCTION__);
dvb_ca_en50221_thread_update_delay(ca);
err=dvb_generic_release(inode, file);
- if (err<0)
- return err;
+
+ module_put(ca->pub->owner);
+
return 0;
}
dprintk ("%s\n", __FUNCTION__);
if (dvb_ca_en50221_io_read_condition(ca, &result, &slot) == 1) {
- up(&ca->slot_info[slot].sem);
+ up_read(&ca->slot_info[slot].sem);
mask |= POLLIN;
}
/* if there is something, return now */
- if (mask) return mask;
+ if (mask)
+ return mask;
/* wait for something to happen */
poll_wait(file, &ca->wait_queue, wait);
if (dvb_ca_en50221_io_read_condition(ca, &result, &slot) == 1) {
- up(&ca->slot_info[slot].sem);
+ up_read(&ca->slot_info[slot].sem);
mask |= POLLIN;
}
return mask;
}
+EXPORT_SYMBOL(dvb_ca_en50221_init);
static struct file_operations dvb_ca_fops = {
- .owner = THIS_MODULE,
- .read = dvb_ca_en50221_io_read,
- .write = dvb_ca_en50221_io_write,
- .ioctl = dvb_ca_en50221_io_ioctl,
- .open = dvb_ca_en50221_io_open,
- .release = dvb_ca_en50221_io_release,
- .poll = dvb_ca_en50221_io_poll,
+ .owner = THIS_MODULE,
+ .read = dvb_ca_en50221_io_read,
+ .write = dvb_ca_en50221_io_write,
+ .ioctl = dvb_ca_en50221_io_ioctl,
+ .open = dvb_ca_en50221_io_open,
+ .release= dvb_ca_en50221_io_release,
+ .poll = dvb_ca_en50221_io_poll,
};
static struct dvb_device dvbdev_ca = {
- .users = 1,
- .readers = 1,
- .writers = 1,
- .fops = &dvb_ca_fops,
+ .priv = NULL,
+ .users = 1,
+ .readers= 1,
+ .writers= 1,
+ .fops = &dvb_ca_fops,
};
-
/* ******************************************************************************** */
/* Initialisation/shutdown functions */
*
* @return 0 on success, nonzero on failure
*/
-int dvb_ca_en50221_init(struct dvb_adapter *dvb_adapter, struct dvb_ca_en50221* pubca, int flags, int slot_count)
+int dvb_ca_en50221_init(struct dvb_adapter *dvb_adapter,
+ struct dvb_ca_en50221 *pubca, int flags, int slot_count)
{
int ret;
struct dvb_ca_private* ca = NULL;
dprintk ("%s\n", __FUNCTION__);
- if (slot_count < 1) return -EINVAL;
+ if (slot_count < 1)
+ return -EINVAL;
/* initialise the system data */
- if ((ca = (struct dvb_ca_private*) kmalloc(sizeof(struct dvb_ca_private), GFP_KERNEL)) == NULL) {
+ if ((ca =
+ (struct dvb_ca_private *) kmalloc(sizeof(struct dvb_ca_private),
+ GFP_KERNEL)) == NULL) {
ret = -ENOMEM;
goto error;
}
/* register the DVB device */
ret = dvb_register_device(dvb_adapter, &ca->dvbdev, &dvbdev_ca, ca, DVB_DEVICE_CA);
- if (ret) goto error;
+ if (ret)
+ goto error;
/* now initialise each slot */
for(i=0; i< slot_count; i++) {
ca->slot_info[i].slot_state = DVB_CA_SLOTSTATE_NONE;
atomic_set(&ca->slot_info[i].camchange_count, 0);
ca->slot_info[i].camchange_type = DVB_CA_EN50221_CAMCHANGE_REMOVED;
- init_MUTEX(&ca->slot_info[i].sem);
+ init_rwsem(&ca->slot_info[i].sem);
}
if (signal_pending(current)) {
error:
if (ca != NULL) {
- if (ca->dvbdev != NULL) dvb_unregister_device(ca->dvbdev);
- if (ca->slot_info != NULL) kfree(ca->slot_info);
+ if (ca->dvbdev != NULL)
+ dvb_unregister_device(ca->dvbdev);
+ if (ca->slot_info != NULL)
+ kfree(ca->slot_info);
kfree(ca);
}
pubca->private = NULL;
return ret;
}
+EXPORT_SYMBOL(dvb_ca_en50221_release);
/* shutdown the thread if there was one */
if (ca->thread_pid) {
if (kill_proc(ca->thread_pid, 0, 1) == -ESRCH) {
- printk("dvb_ca_release: thread PID %d already died\n", ca->thread_pid);
+ printk("dvb_ca_release adapter %d: thread PID %d already died\n",
+ ca->dvbdev->adapter->num, ca->thread_pid);
} else {
ca->exit = 1;
mb();
pubca->private = NULL;
}
-MODULE_PARM(dvb_ca_en50221_debug,"i");
-
-MODULE_PARM_DESC(dvb_ca_en50221_debug, "enable verbose debug messages");
git://git.onelab.eu / linux-2.6.git / blobdiff