- struct dvb_ca_private *ca = (struct dvb_ca_private*) data;
- char name[15];
- int slot;
- int flags;
- int pktcount;
- void* rxbuf;
-
- dprintk ("%s\n", __FUNCTION__);
-
- /* setup kernel thread */
- snprintf(name, sizeof(name), "kdvb-ca-%i:%i", ca->dvbdev->adapter->num, ca->dvbdev->id);
- dvb_kernel_thread_setup(name);
-
- /* choose the correct initial delay */
- dvb_ca_en50221_thread_update_delay(ca);
-
- /* main loop */
- 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);
- if ((flags == -ERESTARTSYS) || ca->exit) {
- /* got signal or quitting */
- break;
- }
- }
- ca->wakeup = 0;
-
- /* go through all the slots processing them */
- for(slot=0; slot < ca->slot_count; slot++) {
-
- // 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 a CAM is NOW present, initialise it */
- if (ca->slot_info[slot].camchange_type == DVB_CA_EN50221_CAMCHANGE_INSERTED) {
- ca->slot_info[slot].slot_state = DVB_CA_SLOTSTATE_UNINITIALISED;
- }
-
- /* we've handled one CAMCHANGE */
- dvb_ca_en50221_thread_update_delay(ca);
- atomic_dec(&ca->slot_info[slot].camchange_count);
- }
-
- // CAM state machine
- switch(ca->slot_info[slot].slot_state) {
- case DVB_CA_SLOTSTATE_NONE:
- case DVB_CA_SLOTSTATE_INVALID:
- // no action needed
- break;
-
- case DVB_CA_SLOTSTATE_UNINITIALISED:
- ca->slot_info[slot].slot_state = DVB_CA_SLOTSTATE_WAITREADY;
- ca->pub->slot_reset(ca->pub, slot);
- ca->slot_info[slot].timeout = jiffies + (INIT_TIMEOUT_SECS * HZ);
- break;
-
- case DVB_CA_SLOTSTATE_WAITREADY:
- if (time_after(jiffies, ca->slot_info[slot].timeout)) {
- printk("dvb_ca: PC card did not respond :(\n");
- ca->slot_info[slot].slot_state = DVB_CA_SLOTSTATE_INVALID;
- dvb_ca_en50221_thread_update_delay(ca);
- break;
- }
- // no other action needed; will automatically change state when ready
- break;
-
- case DVB_CA_SLOTSTATE_VALIDATE:
- if (dvb_ca_en50221_parse_attributes(ca, slot) != 0) {
- printk("dvb_ca: Invalid PC card inserted :(\n");
- ca->slot_info[slot].slot_state = DVB_CA_SLOTSTATE_INVALID;
- 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");
- ca->slot_info[slot].slot_state = DVB_CA_SLOTSTATE_INVALID;
- dvb_ca_en50221_thread_update_delay(ca);
- break;
- }
-
- dprintk("DVB CAM validated successfully\n");
-
- ca->slot_info[slot].timeout = jiffies + (INIT_TIMEOUT_SECS * HZ);
- ca->slot_info[slot].slot_state = DVB_CA_SLOTSTATE_WAITFR;
- ca->wakeup = 1;
- break;
-
- case DVB_CA_SLOTSTATE_WAITFR:
- if (time_after(jiffies, ca->slot_info[slot].timeout)) {
- printk("dvb_ca: DVB CAM did not respond :(\n");
- ca->slot_info[slot].slot_state = DVB_CA_SLOTSTATE_INVALID;
- dvb_ca_en50221_thread_update_delay(ca);
- break;
- }
-
- flags = ca->pub->read_cam_control(ca->pub, slot, CTRLIF_STATUS);
- if (flags & STATUSREG_FR) {
- ca->slot_info[slot].slot_state = DVB_CA_SLOTSTATE_LINKINIT;
- ca->wakeup = 1;
- }
- break;
-
- case DVB_CA_SLOTSTATE_LINKINIT:
- if (dvb_ca_en50221_link_init(ca, slot) != 0) {
- printk("dvb_ca: DVB CAM link initialisation failed :(\n");
- 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");
- ca->slot_info[slot].slot_state = DVB_CA_SLOTSTATE_INVALID;
- dvb_ca_en50221_thread_update_delay(ca);
- break;
- }
- dvb_ringbuffer_init(&ca->slot_info[slot].rx_buffer, rxbuf, RX_BUFFER_SIZE);
-
- 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");
- break;
-
- case DVB_CA_SLOTSTATE_RUNNING:
- if (!ca->open) break;
-
- pktcount = 0;
- while(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)) {
- // we dont want to sleep on the next iteration so we can handle the cam change
- ca->wakeup = 1;
- break;
- }
-
- /* check if we've hit our limit this time */
- if (++pktcount >= MAX_RX_PACKETS_PER_ITERATION) {
- // dont sleep; there is likely to be more data to read
- ca->wakeup = 1;
- break;
- }
- }
- break;
- }
- }
- }
-
- /* completed */
- ca->thread_pid = 0;
- mb();
- wake_up_interruptible (&ca->thread_queue);
- return 0;
+ struct dvb_ca_private *ca = data;
+ char name[15];
+ int slot;
+ int flags;
+ int status;
+ int pktcount;
+ void *rxbuf;
+
+ dprintk("%s\n", __FUNCTION__);
+
+ /* setup kernel thread */
+ snprintf(name, sizeof(name), "kdvb-ca-%i:%i", ca->dvbdev->adapter->num, ca->dvbdev->id);
+
+ lock_kernel();
+ daemonize(name);
+ sigfillset(¤t->blocked);
+ unlock_kernel();
+
+ /* choose the correct initial delay */
+ dvb_ca_en50221_thread_update_delay(ca);
+
+ /* main loop */
+ 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);
+ if ((flags == -ERESTARTSYS) || ca->exit) {
+ /* got signal or quitting */
+ break;
+ }
+ }
+ ca->wakeup = 0;
+
+ /* go through all the slots processing them */
+ for (slot = 0; slot < ca->slot_count; slot++) {
+
+ // 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 a CAM is NOW present, initialise it */
+ if (ca->slot_info[slot].camchange_type == DVB_CA_EN50221_CAMCHANGE_INSERTED) {
+ ca->slot_info[slot].slot_state = DVB_CA_SLOTSTATE_UNINITIALISED;
+ }
+
+ /* we've handled one CAMCHANGE */
+ dvb_ca_en50221_thread_update_delay(ca);
+ atomic_dec(&ca->slot_info[slot].camchange_count);
+ }
+
+ // CAM state machine
+ switch (ca->slot_info[slot].slot_state) {
+ case DVB_CA_SLOTSTATE_NONE:
+ case DVB_CA_SLOTSTATE_INVALID:
+ // no action needed
+ break;
+
+ case DVB_CA_SLOTSTATE_UNINITIALISED:
+ ca->slot_info[slot].slot_state = DVB_CA_SLOTSTATE_WAITREADY;
+ ca->pub->slot_reset(ca->pub, slot);
+ ca->slot_info[slot].timeout = jiffies + (INIT_TIMEOUT_SECS * HZ);
+ break;
+
+ case DVB_CA_SLOTSTATE_WAITREADY:
+ if (time_after(jiffies, ca->slot_info[slot].timeout)) {
+ 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;
+ }
+ // no other action needed; will automatically change state when ready
+ break;
+
+ case DVB_CA_SLOTSTATE_VALIDATE:
+ if (dvb_ca_en50221_parse_attributes(ca, slot) != 0) {
+ /* we need this extra check for annoying interfaces like the budget-av */
+ if ((!(ca->flags & DVB_CA_EN50221_FLAG_IRQ_CAMCHANGE)) &&
+ (ca->pub->poll_slot_status)) {
+ int status = ca->pub->poll_slot_status(ca->pub, slot, 0);
+ if (!(status & DVB_CA_EN50221_POLL_CAM_PRESENT)) {
+ ca->slot_info[slot].slot_state = DVB_CA_SLOTSTATE_NONE;
+ dvb_ca_en50221_thread_update_delay(ca);
+ break;
+ }
+ }
+
+ 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);
+ break;
+ }
+ if (dvb_ca_en50221_set_configoption(ca, slot) != 0) {
+ 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;
+ }
+ dprintk("DVB CAM validated successfully\n");
+
+ ca->slot_info[slot].timeout = jiffies + (INIT_TIMEOUT_SECS * HZ);
+ ca->slot_info[slot].slot_state = DVB_CA_SLOTSTATE_WAITFR;
+ ca->wakeup = 1;
+ break;
+
+ case DVB_CA_SLOTSTATE_WAITFR:
+ if (time_after(jiffies, ca->slot_info[slot].timeout)) {
+ 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;
+ }
+
+ flags = ca->pub->read_cam_control(ca->pub, slot, CTRLIF_STATUS);
+ if (flags & STATUSREG_FR) {
+ ca->slot_info[slot].slot_state = DVB_CA_SLOTSTATE_LINKINIT;
+ ca->wakeup = 1;
+ }
+ break;
+
+ case DVB_CA_SLOTSTATE_LINKINIT:
+ if (dvb_ca_en50221_link_init(ca, slot) != 0) {
+ /* we need this extra check for annoying interfaces like the budget-av */
+ if ((!(ca->flags & DVB_CA_EN50221_FLAG_IRQ_CAMCHANGE)) &&
+ (ca->pub->poll_slot_status)) {
+ int status = ca->pub->poll_slot_status(ca->pub, slot, 0);
+ if (!(status & DVB_CA_EN50221_POLL_CAM_PRESENT)) {
+ ca->slot_info[slot].slot_state = DVB_CA_SLOTSTATE_NONE;
+ dvb_ca_en50221_thread_update_delay(ca);
+ break;
+ }
+ }
+
+ 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;
+ }
+
+ if (ca->slot_info[slot].rx_buffer.data == NULL) {
+ rxbuf = vmalloc(RX_BUFFER_SIZE);
+ if (rxbuf == NULL) {
+ 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;
+ }
+ dvb_ringbuffer_init(&ca->slot_info[slot].rx_buffer, rxbuf, RX_BUFFER_SIZE);
+ }
+
+ 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 adapter %d: DVB CAM detected and initialised successfully\n", ca->dvbdev->adapter->num);
+ break;
+
+ case DVB_CA_SLOTSTATE_RUNNING:
+ if (!ca->open)
+ continue;
+
+ // poll slots for data
+ pktcount = 0;
+ 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)) {
+ // we dont want to sleep on the next iteration so we can handle the cam change
+ ca->wakeup = 1;
+ break;
+ }
+
+ /* check if we've hit our limit this time */
+ if (++pktcount >= MAX_RX_PACKETS_PER_ITERATION) {
+ // dont sleep; there is likely to be more data to read
+ ca->wakeup = 1;
+ break;
+ }
+ }
+ break;
+ }
+ }
+ }
+
+ /* completed */
+ ca->thread_pid = 0;
+ mb();
+ wake_up_interruptible(&ca->thread_queue);
+ return 0;