#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/spinlock.h>
+#include <linux/sched.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
+#define INIT_TIMEOUT_SECS 10
#define HOST_LINK_BUF_SIZE 0x200
#define CTRLIF_SIZE_LOW 2
#define CTRLIF_SIZE_HIGH 3
-#define CMDREG_HC 1 /* Host control */
-#define CMDREG_SW 2 /* Size write */
-#define CMDREG_SR 4 /* Size read */
-#define CMDREG_RS 8 /* Reset interface */
-#define CMDREG_FRIE 0x40 /* Enable FR interrupt */
-#define CMDREG_DAIE 0x80 /* Enable DA interrupt */
+#define CMDREG_HC 1 /* Host control */
+#define CMDREG_SW 2 /* Size write */
+#define CMDREG_SR 4 /* Size read */
+#define CMDREG_RS 8 /* Reset interface */
+#define CMDREG_FRIE 0x40 /* Enable FR interrupt */
+#define CMDREG_DAIE 0x80 /* Enable DA interrupt */
#define IRQEN (CMDREG_DAIE)
-#define STATUSREG_RE 1 /* read error */
-#define STATUSREG_WE 2 /* write error */
-#define STATUSREG_FR 0x40 /* module free */
-#define STATUSREG_DA 0x80 /* data available */
-#define STATUSREG_TXERR (STATUSREG_RE|STATUSREG_WE) /* general transfer error */
+#define STATUSREG_RE 1 /* read error */
+#define STATUSREG_WE 2 /* write error */
+#define STATUSREG_FR 0x40 /* module free */
+#define STATUSREG_DA 0x80 /* data available */
+#define STATUSREG_TXERR (STATUSREG_RE|STATUSREG_WE) /* general transfer error */
#define DVB_CA_SLOTSTATE_NONE 0
/* Information on a CA slot */
struct dvb_ca_slot {
- /* current state of the CAM */
- int slot_state;
+ /* current state of the CAM */
+ int slot_state;
- /* Number of CAMCHANGES that have occurred since last processing */
- atomic_t camchange_count;
+ /* Number of CAMCHANGES that have occurred since last processing */
+ atomic_t camchange_count;
- /* Type of last CAMCHANGE */
- int camchange_type;
+ /* Type of last CAMCHANGE */
+ int camchange_type;
- /* base address of CAM config */
- u32 config_base;
+ /* base address of CAM config */
+ u32 config_base;
- /* value to write into Config Control register */
- u8 config_option;
+ /* value to write into Config Control register */
+ u8 config_option;
- /* if 1, the CAM supports DA IRQs */
- u8 da_irq_supported:1;
+ /* if 1, the CAM supports DA IRQs */
+ u8 da_irq_supported:1;
- /* size of the buffer to use when talking to the CAM */
- int link_buf_size;
+ /* size of the buffer to use when talking to the CAM */
+ int link_buf_size;
- /* semaphore for syncing access to slot structure */
- struct semaphore sem;
+ /* buffer for incoming packets */
+ struct dvb_ringbuffer rx_buffer;
- /* buffer for incoming packets */
- struct dvb_ringbuffer rx_buffer;
-
- /* timer used during various states of the slot */
- unsigned long timeout;
+ /* timer used during various states of the slot */
+ unsigned long timeout;
};
/* Private CA-interface information */
struct dvb_ca_private {
- /* pointer back to the public data structure */
- struct dvb_ca_en50221* pub;
+ /* pointer back to the public data structure */
+ struct dvb_ca_en50221 *pub;
- /* the DVB device */
- struct dvb_device *dvbdev;
+ /* the DVB device */
+ struct dvb_device *dvbdev;
- /* Flags describing the interface (DVB_CA_FLAG_*) */
- u32 flags;
+ /* Flags describing the interface (DVB_CA_FLAG_*) */
+ u32 flags;
- /* number of slots supported by this CA interface */
- unsigned int slot_count;
+ /* number of slots supported by this CA interface */
+ unsigned int slot_count;
- /* information on each slot */
- struct dvb_ca_slot* slot_info;
+ /* information on each slot */
+ struct dvb_ca_slot *slot_info;
- /* wait queues for read() and write() operations */
- wait_queue_head_t wait_queue;
+ /* wait queues for read() and write() operations */
+ wait_queue_head_t wait_queue;
- /* PID of the monitoring thread */
- pid_t thread_pid;
+ /* PID of the monitoring thread */
+ pid_t thread_pid;
- /* Wait queue used when shutting thread down */
- wait_queue_head_t thread_queue;
+ /* Wait queue used when shutting thread down */
+ wait_queue_head_t thread_queue;
- /* Flag indicating when thread should exit */
- int exit:1;
+ /* Flag indicating when thread should exit */
+ unsigned int exit:1;
- /* Flag indicating if the CA device is open */
- int open:1;
+ /* Flag indicating if the CA device is open */
+ unsigned int open:1;
- /* Flag indicating the thread should wake up now */
- int wakeup:1;
+ /* Flag indicating the thread should wake up now */
+ unsigned int wakeup:1;
- /* Delay the main thread should use */
- unsigned long delay;
+ /* Delay the main thread should use */
+ unsigned long delay;
- /* Slot to start looking for data to read from in the next user-space read operation */
- int next_read_slot;
+ /* Slot to start looking for data to read from in the next user-space read operation */
+ int next_read_slot;
};
-static void dvb_ca_en50221_thread_wakeup(struct dvb_ca_private* ca);
-static int dvb_ca_en50221_read_data(struct dvb_ca_private* ca, int slot, u8* ebuf, int ecount);
-static int dvb_ca_en50221_write_data(struct dvb_ca_private* ca, int slot, u8* ebuf, int ecount);
+static void dvb_ca_en50221_thread_wakeup(struct dvb_ca_private *ca);
+static int dvb_ca_en50221_read_data(struct dvb_ca_private *ca, int slot, u8 * ebuf, int ecount);
+static int dvb_ca_en50221_write_data(struct dvb_ca_private *ca, int slot, u8 * ebuf, int ecount);
/**
* @param nlen Number of bytes in needle.
* @return Pointer into haystack needle was found at, or NULL if not found.
*/
-static u8* findstr(u8* haystack, int hlen, u8* needle, int nlen)
+static u8 *findstr(u8 * haystack, int hlen, u8 * needle, int nlen)
{
- int i;
+ 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;
- }
+ for (i = 0; i <= hlen - nlen; i++) {
+ if (!strncmp(haystack + i, needle, nlen))
+ return haystack + i;
+ }
- return NULL;
+ return NULL;
}
/**
* Check CAM status.
*/
-static int dvb_ca_en50221_check_camstatus(struct dvb_ca_private* ca, int slot)
+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;
-
- /* IRQ mode */
- if (ca->flags & DVB_CA_EN50221_FLAG_IRQ_CAMCHANGE) {
- return (atomic_read(&ca->slot_info[slot].camchange_count) != 0);
- }
-
- /* 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);
-
- 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;
- if (!cam_changed) {
- int cam_present_old = (ca->slot_info[slot].slot_state != DVB_CA_SLOTSTATE_NONE);
- cam_changed = (cam_present_now != cam_present_old);
- }
-
- if (cam_changed) {
- if (!cam_present_now) {
- ca->slot_info[slot].camchange_type = DVB_CA_EN50221_CAMCHANGE_REMOVED;
- } else {
- ca->slot_info[slot].camchange_type = DVB_CA_EN50221_CAMCHANGE_INSERTED;
- }
- atomic_set(&ca->slot_info[slot].camchange_count, 1);
- } else {
- if ((ca->slot_info[slot].slot_state == DVB_CA_SLOTSTATE_WAITREADY) &&
- (slot_status & DVB_CA_EN50221_POLL_CAM_READY)) {
- // move to validate state if reset is completed
- ca->slot_info[slot].slot_state = DVB_CA_SLOTSTATE_VALIDATE;
- }
- }
-
- return cam_changed;
+ int slot_status;
+ int cam_present_now;
+ int cam_changed;
+
+ /* IRQ mode */
+ if (ca->flags & DVB_CA_EN50221_FLAG_IRQ_CAMCHANGE) {
+ return (atomic_read(&ca->slot_info[slot].camchange_count) != 0);
+ }
+
+ /* poll mode */
+ 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;
+ if (!cam_changed) {
+ int cam_present_old = (ca->slot_info[slot].slot_state != DVB_CA_SLOTSTATE_NONE);
+ cam_changed = (cam_present_now != cam_present_old);
+ }
+
+ if (cam_changed) {
+ if (!cam_present_now) {
+ ca->slot_info[slot].camchange_type = DVB_CA_EN50221_CAMCHANGE_REMOVED;
+ } else {
+ ca->slot_info[slot].camchange_type = DVB_CA_EN50221_CAMCHANGE_INSERTED;
+ }
+ atomic_set(&ca->slot_info[slot].camchange_count, 1);
+ } else {
+ if ((ca->slot_info[slot].slot_state == DVB_CA_SLOTSTATE_WAITREADY) &&
+ (slot_status & DVB_CA_EN50221_POLL_CAM_READY)) {
+ // move to validate state if reset is completed
+ ca->slot_info[slot].slot_state = DVB_CA_SLOTSTATE_VALIDATE;
+ }
+ }
+
+ return cam_changed;
}
*
* @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;
-
- dprintk ("%s\n", __FUNCTION__);
-
- /* loop until timeout elapsed */
- start = jiffies;
- timeout = jiffies + timeout_hz;
- 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 we got the flags, it was successful! */
- if (res & waitfor) {
- dprintk("%s succeeded timeout:%lu\n", __FUNCTION__, jiffies - start);
- return 0;
- }
-
- /* check for timeout */
- if (time_after(jiffies, timeout)) {
- break;
- }
-
- /* wait for a bit */
- dvb_delay(1);
- }
-
- dprintk("%s failed timeout:%lu\n", __FUNCTION__, jiffies - start);
-
- /* if we get here, we've timed out */
- return -ETIMEDOUT;
+ unsigned long timeout;
+ unsigned long start;
+
+ dprintk("%s\n", __FUNCTION__);
+
+ /* loop until timeout elapsed */
+ start = jiffies;
+ timeout = jiffies + timeout_hz;
+ 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 we got the flags, it was successful! */
+ if (res & waitfor) {
+ dprintk("%s succeeded timeout:%lu\n", __FUNCTION__, jiffies - start);
+ return 0;
+ }
+
+ /* check for timeout */
+ if (time_after(jiffies, timeout)) {
+ break;
+ }
+
+ /* wait for a bit */
+ msleep(1);
+ }
+
+ dprintk("%s failed timeout:%lu\n", __FUNCTION__, jiffies - start);
+
+ /* if we get here, we've timed out */
+ return -ETIMEDOUT;
}
*
* @return 0 on success, nonzero on failure.
*/
-static int dvb_ca_en50221_link_init(struct dvb_ca_private* ca, int slot)
+static int dvb_ca_en50221_link_init(struct dvb_ca_private *ca, int slot)
{
- int ret;
- int buf_size;
- u8 buf[2];
-
- dprintk ("%s\n", __FUNCTION__);
-
- /* 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;
-
- /* 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;
- 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;
-
- /* success */
- return 0;
+ int ret;
+ int buf_size;
+ u8 buf[2];
+
+ dprintk("%s\n", __FUNCTION__);
+
+ /* we'll be determining these during this function */
+ ca->slot_info[slot].da_irq_supported = 0;
+
+ /* 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;
+
+ /* 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;
+ 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;
+
+ /* success */
+ return 0;
}
/**
*
* @return 0 on success, nonzero on error.
*/
-static int dvb_ca_en50221_read_tuple(struct dvb_ca_private* ca, int slot,
- int* address, int* tupleType, int* tupleLength, u8* tuple)
+static int dvb_ca_en50221_read_tuple(struct dvb_ca_private *ca, int slot,
+ int *address, int *tupleType, int *tupleLength, u8 * tuple)
{
- int i;
- int _tupleType;
- int _tupleLength;
- 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;
- _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] : '.');
- }
- _address += (_tupleLength*2);
-
- // success
- *tupleType = _tupleType;
- *tupleLength = _tupleLength;
- *address = _address;
- return 0;
+ int i;
+ int _tupleType;
+ int _tupleLength;
+ 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 (_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] : '.');
+ }
+ _address += (_tupleLength * 2);
+
+ // success
+ *tupleType = _tupleType;
+ *tupleLength = _tupleLength;
+ *address = _address;
+ return 0;
}
*
* @return 0 on success, <0 on failure.
*/
-static int dvb_ca_en50221_parse_attributes(struct dvb_ca_private* ca, int slot)
+static int dvb_ca_en50221_parse_attributes(struct dvb_ca_private *ca, int slot)
{
- int address = 0;
- int tupleLength;
- int tupleType;
- u8 tuple[257];
- char* dvb_str;
- int rasz;
- int status;
- int got_cftableentry = 0;
- int end_chain = 0;
- int i;
- u16 manfid = 0;
- u16 devid = 0;
-
-
- // CISTPL_DEVICE_0A
- 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;
-
-
-
- // CISTPL_VERS_1
- 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;
- 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;
-
- /* extract the configbase */
- rasz = tuple[0] & 3;
- 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;
-
- /* 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]);
- 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;
- switch(tupleType) {
- case 0x1B: // CISTPL_CFTABLE_ENTRY
- if (tupleLength < (2+11+17)) break;
-
- /* if we've already parsed one, just use it */
- 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;
-
- got_cftableentry = 1;
- break;
-
- case 0x14: // CISTPL_NO_LINK
- break;
-
- case 0xFF: // CISTPL_END
- end_chain = 1;
- 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);
- break;
- }
- }
+ int address = 0;
+ int tupleLength;
+ int tupleType;
+ u8 tuple[257];
+ char *dvb_str;
+ int rasz;
+ int status;
+ int got_cftableentry = 0;
+ int end_chain = 0;
+ int i;
+ u16 manfid = 0;
+ u16 devid = 0;
+
+
+ // CISTPL_DEVICE_0A
+ 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;
+
+
+
+ // CISTPL_VERS_1
+ 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;
+ 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;
+
+ /* extract the configbase */
+ rasz = tuple[0] & 3;
+ 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;
+
+ /* is it a version we support? */
+ if (strncmp(dvb_str + 8, "1.00", 4)) {
+ 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;
+ switch (tupleType) {
+ case 0x1B: // CISTPL_CFTABLE_ENTRY
+ if (tupleLength < (2 + 11 + 17))
+ break;
+
+ /* if we've already parsed one, just use it */
+ 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;
+
+ got_cftableentry = 1;
+ break;
+
+ case 0x14: // CISTPL_NO_LINK
+ break;
+
+ case 0xFF: // CISTPL_END
+ end_chain = 1;
+ 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);
+ 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);
+ 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);
- // success!
- return 0;
+ // success!
+ return 0;
}
* @param ca CA instance.
* @param slot Slot containing the CAM.
*/
-static int dvb_ca_en50221_set_configoption(struct dvb_ca_private* ca, int slot)
+static int dvb_ca_en50221_set_configoption(struct dvb_ca_private *ca, int slot)
{
- int configoption;
+ int configoption;
- dprintk ("%s\n", __FUNCTION__);
+ 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);
+ /* set the 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("Set configoption 0x%x, read configoption 0x%x\n",
+ /* check it */
+ configoption = ca->pub->read_attribute_mem(ca->pub, slot, ca->slot_info[slot].config_base);
+ dprintk("Set configoption 0x%x, read configoption 0x%x\n",
ca->slot_info[slot].config_option, configoption & 0x3f);
- /* fine! */
- return 0;
+ /* fine! */
+ return 0;
}
*
* @return Number of bytes read, or < 0 on error
*/
-static int dvb_ca_en50221_read_data(struct dvb_ca_private* ca, int slot, u8* ebuf, int ecount)
+static int dvb_ca_en50221_read_data(struct dvb_ca_private *ca, int slot, u8 * ebuf, int ecount)
{
- int bytes_read;
- int status;
- u8 buf[HOST_LINK_BUF_SIZE];
- int i;
-
- 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)) {
- 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;
- }
- if (!(status & STATUSREG_DA)) {
- /* no data */
- status = 0;
- goto exit;
- }
-
- /* read the amount of data */
- 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;
- 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");
- 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");
- 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");
- 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;
-
- /* 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;
- if (status & STATUSREG_RE) {
- status = -EIO;
- goto exit;
- }
-
- /* OK, add it to the receive buffer, or copy into external buffer if supplied */
- if (ebuf == NULL) {
- dvb_ringbuffer_pkt_write(&ca->slot_info[slot].rx_buffer, buf, bytes_read, 0);
- } else {
- memcpy(ebuf, buf, 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;
+ int bytes_read;
+ int status;
+ u8 buf[HOST_LINK_BUF_SIZE];
+ int i;
+
+ dprintk("%s\n", __FUNCTION__);
+
+ /* check if we have space for a link buf in the rx_buffer */
+ if (ebuf == NULL) {
+ int buf_free;
+
+ if (ca->slot_info[slot].rx_buffer.data == NULL) {
+ status = -EIO;
+ goto exit;
+ }
+ buf_free = dvb_ringbuffer_free(&ca->slot_info[slot].rx_buffer);
+
+ if (buf_free < (ca->slot_info[slot].link_buf_size + DVB_RINGBUFFER_PKTHDRSIZE)) {
+ status = -EAGAIN;
+ 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;
+ goto exit;
+ }
+
+ /* read the amount of data */
+ 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;
+ bytes_read |= status;
+
+ /* check it will fit */
+ if (ebuf == NULL) {
+ if (bytes_read > ca->slot_info[slot].link_buf_size) {
+ 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 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 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;
+
+ /* OK, store it in the buffer */
+ buf[i] = status;
+ }
+
+ /* 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) {
+ if (ca->slot_info[slot].rx_buffer.data == NULL) {
+ status = -EIO;
+ goto exit;
+ }
+ dvb_ringbuffer_pkt_write(&ca->slot_info[slot].rx_buffer, buf, bytes_read);
+ } 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;
+ return status;
}
*
* @return Number of bytes written, or < 0 on error.
*/
-static int dvb_ca_en50221_write_data(struct dvb_ca_private* ca, int slot, u8* buf, int bytes_write)
+static int dvb_ca_en50221_write_data(struct dvb_ca_private *ca, int slot, u8 * buf, int bytes_write)
{
- int status;
- int i;
-
- dprintk ("%s\n", __FUNCTION__);
-
-
- // 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;
- }
-
- /* check if interface is actually waiting for us to read from it */
- if (status & STATUSREG_DA) {
- 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;
-
- /* check if interface is still free */
- 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;
- goto exit;
- }
-
- /* 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;
-
- /* 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;
- }
-
- /* 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 & STATUSREG_WE) {
- status = -EIO;
- goto exit;
- }
- status = bytes_write;
+ int status;
+ int i;
+
+ dprintk("%s\n", __FUNCTION__);
+
+
+ // sanity check
+ if (bytes_write > ca->slot_info[slot].link_buf_size)
+ return -EINVAL;
+
+ /* 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;
+
+ /* check if interface is still free */
+ 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;
+ goto exit;
+ }
+
+ /* 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;
+
+ /* 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;
+ }
+
+ /* 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 & 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);
+ ca->pub->write_cam_control(ca->pub, slot, CTRLIF_COMMAND, IRQEN);
exitnowrite:
- up(&ca->slot_info[slot].sem);
- return status;
+ return status;
}
+EXPORT_SYMBOL(dvb_ca_en50221_camchange_irq);
* @param ca CA instance.
* @param slot Slot to shut down.
*/
-static int dvb_ca_en50221_slot_shutdown(struct dvb_ca_private* ca, int slot)
+static int dvb_ca_en50221_slot_shutdown(struct dvb_ca_private *ca, int slot)
{
- int status;
+ dprintk("%s\n", __FUNCTION__);
- dprintk ("%s\n", __FUNCTION__);
+ ca->pub->slot_shutdown(ca->pub, slot);
+ ca->slot_info[slot].slot_state = DVB_CA_SLOTSTATE_NONE;
- if ((status = down_interruptible(&ca->slot_info[slot].sem)) != 0) return status;
- 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);
- ca->slot_info[slot].rx_buffer.data = NULL;
- up(&ca->slot_info[slot].sem);
+ /* need to wake up all processes to check if they're now
+ trying to write to a defunct CAM */
+ wake_up_interruptible(&ca->wait_queue);
- /* need to wake up all processes to check if they're now
- trying to write to a defunct CAM */
- wake_up_interruptible(&ca->wait_queue);
+ dprintk("Slot %i shutdown\n", slot);
- dprintk("Slot %i shutdown\n", slot);
-
- /* success */
- return 0;
+ /* success */
+ return 0;
}
+EXPORT_SYMBOL(dvb_ca_en50221_camready_irq);
/**
* @param slot Slot concerned.
* @param change_type One of the DVB_CA_CAMCHANGE_* values.
*/
-void dvb_ca_en50221_camchange_irq(struct dvb_ca_en50221* pubca, int slot, int change_type)
+void dvb_ca_en50221_camchange_irq(struct dvb_ca_en50221 *pubca, int slot, int change_type)
{
- struct dvb_ca_private* ca = (struct dvb_ca_private*) pubca->private;
+ struct dvb_ca_private *ca = pubca->private;
- dprintk("CAMCHANGE IRQ slot:%i change_type:%i\n", slot, change_type);
+ dprintk("CAMCHANGE IRQ slot:%i change_type:%i\n", slot, change_type);
- switch(change_type) {
- case DVB_CA_EN50221_CAMCHANGE_REMOVED:
- case DVB_CA_EN50221_CAMCHANGE_INSERTED:
- break;
+ switch (change_type) {
+ case DVB_CA_EN50221_CAMCHANGE_REMOVED:
+ case DVB_CA_EN50221_CAMCHANGE_INSERTED:
+ break;
- default:
- return;
- }
+ default:
+ return;
+ }
- ca->slot_info[slot].camchange_type = change_type;
- atomic_inc(&ca->slot_info[slot].camchange_count);
- dvb_ca_en50221_thread_wakeup(ca);
+ ca->slot_info[slot].camchange_type = change_type;
+ atomic_inc(&ca->slot_info[slot].camchange_count);
+ dvb_ca_en50221_thread_wakeup(ca);
}
+EXPORT_SYMBOL(dvb_ca_en50221_frda_irq);
/**
* @param ca CA instance.
* @param slot Slot concerned.
*/
-void dvb_ca_en50221_camready_irq(struct dvb_ca_en50221* pubca, int slot)
+void dvb_ca_en50221_camready_irq(struct dvb_ca_en50221 *pubca, int slot)
{
- struct dvb_ca_private* ca = (struct dvb_ca_private*) pubca->private;
+ struct dvb_ca_private *ca = pubca->private;
- dprintk("CAMREADY IRQ slot:%i\n", slot);
+ dprintk("CAMREADY IRQ slot:%i\n", slot);
- if (ca->slot_info[slot].slot_state == DVB_CA_SLOTSTATE_WAITREADY) {
- ca->slot_info[slot].slot_state = DVB_CA_SLOTSTATE_VALIDATE;
- dvb_ca_en50221_thread_wakeup(ca);
- }
+ if (ca->slot_info[slot].slot_state == DVB_CA_SLOTSTATE_WAITREADY) {
+ ca->slot_info[slot].slot_state = DVB_CA_SLOTSTATE_VALIDATE;
+ dvb_ca_en50221_thread_wakeup(ca);
+ }
}
* @param ca CA instance.
* @param slot Slot concerned.
*/
-void dvb_ca_en50221_frda_irq(struct dvb_ca_en50221* pubca, int slot)
+void dvb_ca_en50221_frda_irq(struct dvb_ca_en50221 *pubca, int slot)
{
- struct dvb_ca_private* ca = (struct dvb_ca_private*) pubca->private;
- int flags;
+ struct dvb_ca_private *ca = pubca->private;
+ int flags;
- dprintk("FR/DA IRQ slot:%i\n", slot);
+ dprintk("FR/DA IRQ slot:%i\n", slot);
- switch(ca->slot_info[slot].slot_state) {
- case DVB_CA_SLOTSTATE_LINKINIT:
- flags = ca->pub->read_cam_control(pubca, slot, CTRLIF_STATUS);
- if (flags & STATUSREG_DA) {
- dprintk("CAM supports DA IRQ\n");
- ca->slot_info[slot].da_irq_supported = 1;
+ switch (ca->slot_info[slot].slot_state) {
+ case DVB_CA_SLOTSTATE_LINKINIT:
+ flags = ca->pub->read_cam_control(pubca, slot, CTRLIF_STATUS);
+ if (flags & STATUSREG_DA) {
+ dprintk("CAM supports DA IRQ\n");
+ ca->slot_info[slot].da_irq_supported = 1;
}
- 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);
- }
- break;
- }
+ break;
+
+ case DVB_CA_SLOTSTATE_RUNNING:
+ if (ca->open)
+ dvb_ca_en50221_thread_wakeup(ca);
+ break;
+ }
}
*
* @param ca CA instance.
*/
-static void dvb_ca_en50221_thread_wakeup(struct dvb_ca_private* ca)
+static void dvb_ca_en50221_thread_wakeup(struct dvb_ca_private *ca)
{
- dprintk ("%s\n", __FUNCTION__);
+ dprintk("%s\n", __FUNCTION__);
- ca->wakeup = 1;
- mb();
- wake_up_interruptible(&ca->thread_queue);
+ ca->wakeup = 1;
+ mb();
+ wake_up_interruptible(&ca->thread_queue);
}
/**
*
* @param ca CA instance.
*/
-static int dvb_ca_en50221_thread_should_wakeup(struct dvb_ca_private* ca)
+static int dvb_ca_en50221_thread_should_wakeup(struct dvb_ca_private *ca)
{
- if (ca->wakeup) {
- ca->wakeup = 0;
- return 1;
- }
- if (ca->exit) return 1;
-
- return 0;
+ if (ca->wakeup) {
+ ca->wakeup = 0;
+ return 1;
+ }
+ if (ca->exit)
+ return 1;
+
+ return 0;
}
*
* @param ca CA instance.
*/
-static void dvb_ca_en50221_thread_update_delay(struct dvb_ca_private* ca)
+static void dvb_ca_en50221_thread_update_delay(struct dvb_ca_private *ca)
{
- int delay;
- int curdelay = 100000000;
- int slot;
-
- for(slot=0; slot < ca->slot_count; slot++) {
- switch(ca->slot_info[slot].slot_state) {
- default:
- case DVB_CA_SLOTSTATE_NONE:
- case DVB_CA_SLOTSTATE_INVALID:
- delay = HZ*60;
- if (!(ca->flags & DVB_CA_EN50221_FLAG_IRQ_CAMCHANGE)) {
- delay = HZ/10;
- }
- break;
-
- case DVB_CA_SLOTSTATE_UNINITIALISED:
- case DVB_CA_SLOTSTATE_WAITREADY:
- case DVB_CA_SLOTSTATE_VALIDATE:
- case DVB_CA_SLOTSTATE_WAITFR:
- case DVB_CA_SLOTSTATE_LINKINIT:
- delay = HZ/10;
- break;
-
- case DVB_CA_SLOTSTATE_RUNNING:
- delay = HZ*60;
- if (!(ca->flags & DVB_CA_EN50221_FLAG_IRQ_CAMCHANGE)) {
- delay = HZ/10;
- }
- if (ca->open) {
- if ((!ca->slot_info[slot].da_irq_supported) ||
- (!(ca->flags & DVB_CA_EN50221_FLAG_IRQ_DA))) {
- delay = HZ/100;
- }
- }
- break;
- }
-
- if (delay < curdelay) curdelay = delay;
- }
-
- ca->delay = curdelay;
+ int delay;
+ int curdelay = 100000000;
+ int slot;
+
+ for (slot = 0; slot < ca->slot_count; slot++) {
+ switch (ca->slot_info[slot].slot_state) {
+ default:
+ case DVB_CA_SLOTSTATE_NONE:
+ case DVB_CA_SLOTSTATE_INVALID:
+ delay = HZ * 60;
+ if (!(ca->flags & DVB_CA_EN50221_FLAG_IRQ_CAMCHANGE)) {
+ delay = HZ / 10;
+ }
+ break;
+
+ case DVB_CA_SLOTSTATE_UNINITIALISED:
+ case DVB_CA_SLOTSTATE_WAITREADY:
+ case DVB_CA_SLOTSTATE_VALIDATE:
+ case DVB_CA_SLOTSTATE_WAITFR:
+ case DVB_CA_SLOTSTATE_LINKINIT:
+ delay = HZ / 10;
+ break;
+
+ case DVB_CA_SLOTSTATE_RUNNING:
+ delay = HZ * 60;
+ if (!(ca->flags & DVB_CA_EN50221_FLAG_IRQ_CAMCHANGE)) {
+ delay = HZ / 10;
+ }
+ if (ca->open) {
+ if ((!ca->slot_info[slot].da_irq_supported) ||
+ (!(ca->flags & DVB_CA_EN50221_FLAG_IRQ_DA))) {
+ delay = HZ / 10;
+ }
+ }
+ break;
+ }
+
+ if (delay < curdelay)
+ curdelay = delay;
+ }
+
+ ca->delay = curdelay;
}
/**
* Kernel thread which monitors CA slots for CAM changes, and performs data transfers.
*/
-static int dvb_ca_en50221_thread(void* data)
+static int dvb_ca_en50221_thread(void *data)
{
- 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;
}
*
* @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;
- int err=0;
- int slot;
-
- dprintk ("%s\n", __FUNCTION__);
-
- switch (cmd) {
- case CA_RESET:
- for(slot = 0; slot < ca->slot_count; slot++) {
- 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);
- }
- }
- ca->next_read_slot = 0;
- dvb_ca_en50221_thread_wakeup(ca);
- break;
-
- case CA_GET_CAP:
- {
- struct ca_caps *caps = (struct ca_caps*) parg;
-
- caps->slot_num=ca->slot_count;
- caps->slot_type=CA_CI_LINK;
- caps->descr_num=0;
- caps->descr_type=0;
- break;
- }
-
-
- case CA_GET_SLOT_INFO:
- {
- struct ca_slot_info *info=(struct ca_slot_info *)parg;
-
- if ((info->num > ca->slot_count) || (info->num < 0))
- return -EINVAL;
-
- 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)) {
- info->flags = CA_CI_MODULE_PRESENT;
- }
- if (ca->slot_info[info->num].slot_state == DVB_CA_SLOTSTATE_RUNNING) {
- info->flags |= CA_CI_MODULE_READY;
- }
- break;
- }
-
- default:
- err=-EINVAL;
- break;
- }
-
- return err;
+ struct dvb_device *dvbdev = file->private_data;
+ struct dvb_ca_private *ca = dvbdev->priv;
+ int err = 0;
+ int slot;
+
+ dprintk("%s\n", __FUNCTION__);
+
+ switch (cmd) {
+ case CA_RESET:
+ for (slot = 0; slot < ca->slot_count; slot++) {
+ 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);
+ }
+ }
+ ca->next_read_slot = 0;
+ dvb_ca_en50221_thread_wakeup(ca);
+ break;
+
+ case CA_GET_CAP: {
+ struct ca_caps *caps = parg;
+
+ caps->slot_num = ca->slot_count;
+ caps->slot_type = CA_CI_LINK;
+ caps->descr_num = 0;
+ caps->descr_type = 0;
+ break;
+ }
+
+ case CA_GET_SLOT_INFO: {
+ struct ca_slot_info *info = parg;
+
+ if ((info->num > ca->slot_count) || (info->num < 0))
+ return -EINVAL;
+
+ 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)) {
+ info->flags = CA_CI_MODULE_PRESENT;
+ }
+ if (ca->slot_info[info->num].slot_state == DVB_CA_SLOTSTATE_RUNNING) {
+ info->flags |= CA_CI_MODULE_READY;
+ }
+ break;
+ }
+
+ default:
+ err = -EINVAL;
+ break;
+ }
+
+ return err;
}
*
* @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 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 *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;
- u8 slot, connection_id;
- int status;
- char fragbuf[HOST_LINK_BUF_SIZE];
- int fragpos = 0;
- 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;
-
- /* extract slot & connection id */
- 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;
-
- /* 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;
-
- fragbuf[0] = connection_id;
- fragbuf[1] = ((fragpos + fraglen) < count) ? 0x80 : 0x00;
- if ((status = copy_from_user(fragbuf+2, buf+fragpos, fraglen)) != 0) goto exit;
-
- timeout = jiffies + HZ/2;
- written = 0;
- while(!time_after(jiffies, timeout)) {
- status = dvb_ca_en50221_write_data(ca, slot, fragbuf, fraglen+2);
- if (status == (fraglen+2)) {
- written = 1;
- break;
+ struct dvb_device *dvbdev = file->private_data;
+ struct dvb_ca_private *ca = dvbdev->priv;
+ u8 slot, connection_id;
+ int status;
+ char fragbuf[HOST_LINK_BUF_SIZE];
+ int fragpos = 0;
+ 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;
+
+ /* extract slot & connection id */
+ 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;
+
+ /* 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;
+
+ fragbuf[0] = connection_id;
+ fragbuf[1] = ((fragpos + fraglen) < count) ? 0x80 : 0x00;
+ 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;
}
- if (status != -EAGAIN) goto exit;
- dvb_delay(1);
- }
- if (!written) {
- 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;
+
+ msleep(1);
+ }
+ if (!written) {
+ status = -EIO;
+ goto exit;
}
- fragpos += fraglen;
- }
- status = count + 2;
+ fragpos += fraglen;
+ }
+ status = count + 2;
exit:
- return status;
+ return status;
}
/**
* Condition for waking up in dvb_ca_en50221_io_read_condition
*/
-static int dvb_ca_en50221_io_read_condition(struct dvb_ca_private* ca, int* result, int* _slot)
+static int dvb_ca_en50221_io_read_condition(struct dvb_ca_private *ca,
+ int *result, int *_slot)
{
- int slot;
- int slot_count = 0;
- int idx;
- 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 ((*result = down_interruptible(&ca->slot_info[slot].sem)) != 0) return 1;
-
- 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 ((hdr[0] == connection_id) && ((hdr[1] & 0x80) == 0)) {
- *_slot = slot;
- found = 1;
- break;
- }
-
- idx = dvb_ringbuffer_pkt_next(&ca->slot_info[slot].rx_buffer, idx, &fraglen);
- }
-
- if (!found) up(&ca->slot_info[slot].sem);
+ int slot;
+ int slot_count = 0;
+ int idx;
+ size_t 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].rx_buffer.data == NULL) {
+ 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 ((hdr[0] == connection_id) && ((hdr[1] & 0x80) == 0)) {
+ *_slot = slot;
+ found = 1;
+ break;
+ }
+
+ idx = dvb_ringbuffer_pkt_next(&ca->slot_info[slot].rx_buffer, idx, &fraglen);
+ }
nextslot:
- slot = (slot + 1) % ca->slot_count;
- slot_count++;
- }
+ slot = (slot + 1) % ca->slot_count;
+ slot_count++;
+ }
- ca->next_read_slot = slot;
- return found;
+ ca->next_read_slot = slot;
+ return found;
}
*
* @return Number of bytes read, or <0 on error.
*/
-static ssize_t dvb_ca_en50221_io_read(struct file *file, char *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;
- int status;
- int result = 0;
- u8 hdr[2];
- int slot;
- int connection_id = -1;
- size_t idx, idx2;
- int last_fragment = 0;
- size_t fraglen;
- int pktlen;
- int dispose = 0;
-
- dprintk ("%s\n", __FUNCTION__);
-
- /* Outgoing packet has a 2 byte header. hdr[0] = slot_id, hdr[1] = connection_id */
- 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;
-
- /* wait for some data */
- 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;
- return status;
- }
-
- idx = dvb_ringbuffer_pkt_next(&ca->slot_info[slot].rx_buffer, -1, &fraglen);
- pktlen = 2;
- do {
- if (idx == -1) {
- printk("dvb_ca: BUG: read packet ended before last_fragment encountered\n");
- 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 (hdr[0] == connection_id) {
- if (pktlen < count) {
- if ((pktlen + fraglen - 2) > count) {
- fraglen = count - pktlen;
- } else {
- fraglen -= 2;
- }
-
- 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;
- 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);
- 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;
- status = pktlen;
+ struct dvb_device *dvbdev = file->private_data;
+ struct dvb_ca_private *ca = dvbdev->priv;
+ int status;
+ int result = 0;
+ u8 hdr[2];
+ int slot;
+ int connection_id = -1;
+ size_t idx, idx2;
+ int last_fragment = 0;
+ size_t fraglen;
+ int pktlen;
+ int dispose = 0;
+
+ dprintk("%s\n", __FUNCTION__);
+
+ /* Outgoing packet has a 2 byte header. hdr[0] = slot_id, hdr[1] = connection_id */
+ 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;
+
+ /* wait for some data */
+ 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;
+ return status;
+ }
+
+ idx = dvb_ringbuffer_pkt_next(&ca->slot_info[slot].rx_buffer, -1, &fraglen);
+ pktlen = 2;
+ do {
+ if (idx == -1) {
+ 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 (hdr[0] == connection_id) {
+ if (pktlen < count) {
+ if ((pktlen + fraglen - 2) > count) {
+ fraglen = count - pktlen;
+ } else {
+ fraglen -= 2;
+ }
+
+ 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;
+ 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);
+ 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;
+ status = pktlen;
exit:
- up(&ca->slot_info[slot].sem);
- return status;
+ return status;
}
*/
static int dvb_ca_en50221_io_open(struct inode *inode, struct file *file)
{
- struct dvb_device *dvbdev = (struct dvb_device *) file->private_data;
- struct dvb_ca_private *ca = (struct dvb_ca_private*) dvbdev->priv;
- int err;
- int i;
+ struct dvb_device *dvbdev = file->private_data;
+ struct dvb_ca_private *ca = dvbdev->priv;
+ int err;
+ int i;
- dprintk ("%s\n", __FUNCTION__);
+ dprintk("%s\n", __FUNCTION__);
- err=dvb_generic_open(inode, file);
- if (err<0)
- return err;
+ if (!try_module_get(ca->pub->owner))
+ return -EIO;
- for(i=0; i< ca->slot_count; i++) {
- if (ca->slot_info[i].slot_state == DVB_CA_SLOTSTATE_RUNNING) {
- dvb_ringbuffer_flush(&ca->slot_info[i].rx_buffer);
- }
- }
+ 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) {
+ if (ca->slot_info[i].rx_buffer.data != NULL) {
+ /* it is safe to call this here without locks because
+ * ca->open == 0. Data is not read in this case */
+ dvb_ringbuffer_flush(&ca->slot_info[i].rx_buffer);
+ }
+ }
+ }
- ca->open = 1;
- dvb_ca_en50221_thread_update_delay(ca);
- dvb_ca_en50221_thread_wakeup(ca);
+ ca->open = 1;
+ dvb_ca_en50221_thread_update_delay(ca);
+ dvb_ca_en50221_thread_wakeup(ca);
- return 0;
+ return 0;
}
*/
static int dvb_ca_en50221_io_release(struct inode *inode, struct file *file)
{
- struct dvb_device *dvbdev=(struct dvb_device *) file->private_data;
- struct dvb_ca_private *ca=(struct dvb_ca_private*) dvbdev->priv;
- int err;
+ struct dvb_device *dvbdev = file->private_data;
+ struct dvb_ca_private *ca = dvbdev->priv;
+ int err = 0;
+
+ dprintk("%s\n", __FUNCTION__);
+
+ /* mark the CA device as closed */
+ ca->open = 0;
+ dvb_ca_en50221_thread_update_delay(ca);
- dprintk ("%s\n", __FUNCTION__);
+ err = dvb_generic_release(inode, file);
- /* mark the CA device as closed */
- ca->open = 0;
- dvb_ca_en50221_thread_update_delay(ca);
+ module_put(ca->pub->owner);
- err=dvb_generic_release(inode, file);
- if (err<0)
- return err;
- return 0;
+ return 0;
}
*
* @return Standard poll mask.
*/
-static unsigned int dvb_ca_en50221_io_poll(struct file *file, poll_table *wait)
+static unsigned int dvb_ca_en50221_io_poll(struct file *file, poll_table * wait)
{
- struct dvb_device* dvbdev = (struct dvb_device*) file->private_data;
- struct dvb_ca_private* ca = (struct dvb_ca_private*) dvbdev->priv;
- unsigned int mask=0;
- int slot;
- int result = 0;
+ struct dvb_device *dvbdev = file->private_data;
+ struct dvb_ca_private *ca = dvbdev->priv;
+ unsigned int mask = 0;
+ int slot;
+ int result = 0;
- dprintk ("%s\n", __FUNCTION__);
+ dprintk("%s\n", __FUNCTION__);
- if (dvb_ca_en50221_io_read_condition(ca, &result, &slot) == 1) {
- up(&ca->slot_info[slot].sem);
- mask |= POLLIN;
- }
+ if (dvb_ca_en50221_io_read_condition(ca, &result, &slot) == 1) {
+ mask |= POLLIN;
+ }
- /* if there is something, return now */
- if (mask) return mask;
+ /* if there is something, return now */
+ if (mask)
+ return mask;
- /* wait for something to happen */
- poll_wait(file, &ca->wait_queue, wait);
+ /* 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);
- mask |= POLLIN;
- }
+ if (dvb_ca_en50221_io_read_condition(ca, &result, &slot) == 1) {
+ mask |= POLLIN;
+ }
- return mask;
+ 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 = {
- priv: 0,
- users: 1,
- readers: 1,
- writers: 1,
- fops: &dvb_ca_fops,
+ .priv = NULL,
+ .users = 1,
+ .readers = 1,
+ .writers = 1,
+ .fops = &dvb_ca_fops,
};
*
* @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;
- int i;
-
- dprintk ("%s\n", __FUNCTION__);
-
- 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) {
- ret = -ENOMEM;
- goto error;
- }
- memset(ca, 0, sizeof(struct dvb_ca_private));
- ca->pub = pubca;
- ca->flags = flags;
- ca->slot_count = slot_count;
- if ((ca->slot_info = kmalloc(sizeof(struct dvb_ca_slot) * slot_count, GFP_KERNEL)) == NULL) {
- ret = -ENOMEM;
- goto error;
- }
- memset(ca->slot_info, 0, sizeof(struct dvb_ca_slot) * slot_count);
- init_waitqueue_head(&ca->wait_queue);
- ca->thread_pid = 0;
- init_waitqueue_head(&ca->thread_queue);
- ca->exit = 0;
- ca->open = 0;
- ca->wakeup = 0;
- ca->next_read_slot = 0;
- pubca->private = ca;
-
- /* register the DVB device */
- ret = dvb_register_device(dvb_adapter, &ca->dvbdev, &dvbdev_ca, ca, DVB_DEVICE_CA);
- if (ret) goto error;
-
- /* now initialise each slot */
- for(i=0; i< slot_count; i++) {
- memset(&ca->slot_info[i], 0, sizeof(struct dvb_ca_slot));
- 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);
- }
-
- if (signal_pending(current)) {
- ret = -EINTR;
- goto error;
- }
- mb();
-
- /* create a kthread for monitoring this CA device */
- ret = kernel_thread (dvb_ca_en50221_thread, ca, 0);
- if (ret < 0) {
- printk("dvb_ca_init: failed to start kernel_thread (%d)\n", ret);
- goto error;
- }
- ca->thread_pid = ret;
- return 0;
+ int ret;
+ struct dvb_ca_private *ca = NULL;
+ int i;
+
+ dprintk("%s\n", __FUNCTION__);
+
+ if (slot_count < 1)
+ return -EINVAL;
+
+ /* initialise the system data */
+ if ((ca = kzalloc(sizeof(struct dvb_ca_private), GFP_KERNEL)) == NULL) {
+ ret = -ENOMEM;
+ goto error;
+ }
+ ca->pub = pubca;
+ ca->flags = flags;
+ ca->slot_count = slot_count;
+ if ((ca->slot_info = kcalloc(slot_count, sizeof(struct dvb_ca_slot), GFP_KERNEL)) == NULL) {
+ ret = -ENOMEM;
+ goto error;
+ }
+ init_waitqueue_head(&ca->wait_queue);
+ ca->thread_pid = 0;
+ init_waitqueue_head(&ca->thread_queue);
+ ca->exit = 0;
+ ca->open = 0;
+ ca->wakeup = 0;
+ ca->next_read_slot = 0;
+ pubca->private = ca;
+
+ /* register the DVB device */
+ ret = dvb_register_device(dvb_adapter, &ca->dvbdev, &dvbdev_ca, ca, DVB_DEVICE_CA);
+ if (ret)
+ goto error;
+
+ /* now initialise each slot */
+ for (i = 0; i < slot_count; i++) {
+ memset(&ca->slot_info[i], 0, sizeof(struct dvb_ca_slot));
+ 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;
+ }
+
+ if (signal_pending(current)) {
+ ret = -EINTR;
+ goto error;
+ }
+ mb();
+
+ /* create a kthread for monitoring this CA device */
+
+ ret = kernel_thread(dvb_ca_en50221_thread, ca, 0);
+
+ if (ret < 0) {
+ printk("dvb_ca_init: failed to start kernel_thread (%d)\n", ret);
+ goto error;
+ }
+ ca->thread_pid = ret;
+ return 0;
error:
- if (ca != NULL) {
- 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;
+ if (ca != NULL) {
+ if (ca->dvbdev != NULL)
+ dvb_unregister_device(ca->dvbdev);
+ kfree(ca->slot_info);
+ kfree(ca);
+ }
+ pubca->private = NULL;
+ return ret;
}
+EXPORT_SYMBOL(dvb_ca_en50221_release);
* @param ca_dev The dvb_device_t instance for the CA device.
* @param ca The associated dvb_ca instance.
*/
-void dvb_ca_en50221_release(struct dvb_ca_en50221* pubca)
+void dvb_ca_en50221_release(struct dvb_ca_en50221 *pubca)
{
- struct dvb_ca_private* ca = (struct dvb_ca_private*) pubca->private;
- int i;
-
- dprintk ("%s\n", __FUNCTION__);
-
- /* 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);
- } else {
- ca->exit = 1;
- mb();
- dvb_ca_en50221_thread_wakeup(ca);
- wait_event_interruptible(ca->thread_queue, ca->thread_pid == 0);
- }
- }
-
- for(i=0; i< ca->slot_count; i++) {
- dvb_ca_en50221_slot_shutdown(ca, i);
- }
- kfree(ca->slot_info);
- dvb_unregister_device(ca->dvbdev);
- kfree(ca);
- pubca->private = NULL;
+ struct dvb_ca_private *ca = pubca->private;
+ int i;
+
+ dprintk("%s\n", __FUNCTION__);
+
+ /* shutdown the thread if there was one */
+ if (ca->thread_pid) {
+ if (kill_proc(ca->thread_pid, 0, 1) == -ESRCH) {
+ printk("dvb_ca_release adapter %d: thread PID %d already died\n",
+ ca->dvbdev->adapter->num, ca->thread_pid);
+ } else {
+ ca->exit = 1;
+ mb();
+ dvb_ca_en50221_thread_wakeup(ca);
+ wait_event_interruptible(ca->thread_queue, ca->thread_pid == 0);
+ }
+ }
+
+ for (i = 0; i < ca->slot_count; i++) {
+ dvb_ca_en50221_slot_shutdown(ca, i);
+ vfree(ca->slot_info[i].rx_buffer.data);
+ }
+ kfree(ca->slot_info);
+ dvb_unregister_device(ca->dvbdev);
+ kfree(ca);
+ 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