diff options
Diffstat (limited to 'linux/drivers/media/dvb/dvb-core')
| -rw-r--r-- | linux/drivers/media/dvb/dvb-core/dvb_ca_en50221.c | 2519 |
1 files changed, 1259 insertions, 1260 deletions
diff --git a/linux/drivers/media/dvb/dvb-core/dvb_ca_en50221.c b/linux/drivers/media/dvb/dvb-core/dvb_ca_en50221.c index fd3116c49..35e265963 100644 --- a/linux/drivers/media/dvb/dvb-core/dvb_ca_en50221.c +++ b/linux/drivers/media/dvb/dvb-core/dvb_ca_en50221.c @@ -42,8 +42,8 @@ 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"); +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 @@ -61,19 +61,19 @@ MODULE_PARM_DESC (cam_debug, "enable verbose debug messages"); #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 @@ -89,85 +89,83 @@ MODULE_PARM_DESC (cam_debug, "enable verbose debug messages"); /* 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 rw_semaphore sem; + /* semaphore for syncing access to slot structure */ + struct rw_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 */ + int exit:1; - /* Flag indicating if the CA device is open */ - int open:1; + /* Flag indicating if the CA device is open */ + int open:1; - /* Flag indicating the thread should wake up now */ - int wakeup:1; + /* Flag indicating the thread should wake up now */ + 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); /** @@ -179,19 +177,19 @@ static int dvb_ca_en50221_write_data (struct dvb_ca_private *ca, int slot, * @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; } @@ -203,43 +201,43 @@ static u8 *findstr (u8 * haystack, int hlen, u8 * needle, int nlen) /** * 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 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; + 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; } @@ -254,44 +252,42 @@ static int dvb_ca_en50221_check_camstatus (struct dvb_ca_private *ca, int slot) * * @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 */ - msleep (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; } @@ -303,52 +299,52 @@ static int dvb_ca_en50221_wait_if_status (struct dvb_ca_private *ca, int slot, * * @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; - - /* 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; } /** @@ -363,46 +359,44 @@ static int dvb_ca_en50221_link_init (struct dvb_ca_private *ca, int slot) * * @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 (_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; + 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; } @@ -415,136 +409,141 @@ static int dvb_ca_en50221_read_tuple (struct dvb_ca_private *ca, int slot, * * @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 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; - - 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; + 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; + + 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; } @@ -554,25 +553,24 @@ static int dvb_ca_en50221_parse_attributes (struct dvb_ca_private *ca, int slot) * @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", - ca->slot_info[slot].config_option, configoption & 0x3f); + /* 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; } @@ -590,111 +588,110 @@ static int dvb_ca_en50221_set_configoption (struct dvb_ca_private *ca, int slot) * * @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__); - - /* check if we have space for a link buf in the rx_buffer */ - if (ebuf == NULL) { - int buf_free; - - down_read (&ca->slot_info[slot].sem); - 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; - } - } - - /* 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!\n", ca->dvbdev->adapter->num); - 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) { - down_read (&ca->slot_info[slot].sem); - 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; + 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; + + down_read(&ca->slot_info[slot].sem); + 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; + } + } + + /* 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!\n", + ca->dvbdev->adapter->num); + 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) { + down_read(&ca->slot_info[slot].sem); + 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: - return status; + return status; } @@ -710,73 +707,71 @@ static int dvb_ca_en50221_read_data (struct dvb_ca_private *ca, int slot, * * @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; - - /* 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); - - exitnowrite: - return status; + 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); + +exitnowrite: + return status; } @@ -791,26 +786,26 @@ static int dvb_ca_en50221_write_data (struct dvb_ca_private *ca, int slot, * @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) { - dprintk ("%s\n", __FUNCTION__); + dprintk("%s\n", __FUNCTION__); - 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); - ca->slot_info[slot].rx_buffer.data = NULL; - up_write (&ca->slot_info[slot].sem); + 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); + ca->slot_info[slot].rx_buffer.data = NULL; + 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 */ - 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; } @@ -821,25 +816,24 @@ static int dvb_ca_en50221_slot_shutdown (struct dvb_ca_private *ca, int slot) * @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 = (struct dvb_ca_private *) 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); } @@ -849,16 +843,16 @@ void dvb_ca_en50221_camchange_irq (struct dvb_ca_en50221 *pubca, int slot, * @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 = (struct dvb_ca_private *) 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); + } } @@ -868,27 +862,27 @@ void dvb_ca_en50221_camready_irq (struct dvb_ca_en50221 *pubca, int slot) * @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; - - 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; - } - break; - - case DVB_CA_SLOTSTATE_RUNNING: - if (ca->open) - dvb_ca_en50221_read_data (ca, slot, NULL, 0); - break; - } + struct dvb_ca_private *ca = (struct dvb_ca_private *) pubca->private; + int flags; + + 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; + } + break; + + case DVB_CA_SLOTSTATE_RUNNING: + if (ca->open) + dvb_ca_en50221_read_data(ca, slot, NULL, 0); + break; + } } @@ -901,14 +895,14 @@ void dvb_ca_en50221_frda_irq (struct dvb_ca_en50221 *pubca, int slot) * * @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); } /** @@ -916,16 +910,16 @@ static void dvb_ca_en50221_thread_wakeup (struct dvb_ca_private *ca) * * @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; } @@ -934,50 +928,50 @@ static int dvb_ca_en50221_thread_should_wakeup (struct dvb_ca_private *ca) * * @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 / 100; + } + } + break; + } + + if (delay < curdelay) + curdelay = delay; + } + + ca->delay = curdelay; } @@ -985,189 +979,195 @@ static void dvb_ca_en50221_thread_update_delay (struct dvb_ca_private *ca) /** * 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 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) { - 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) { - 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 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; - - // no need to poll if the CAM supports IRQs - if (ca->slot_info[slot].da_irq_supported) - break; - - // poll mode - 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; + struct dvb_ca_private *ca = (struct dvb_ca_private *) 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) { + 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) { + 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 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; + + // no need to poll if the CAM supports IRQs + if (ca->slot_info[slot].da_irq_supported) + break; + + // poll mode + 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; } @@ -1186,66 +1186,67 @@ static int dvb_ca_en50221_thread (void *data) * * @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); - else - ca->slot_info[slot].slot_state = DVB_CA_SLOTSTATE_NONE; - } - } - 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 = (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); + else + ca->slot_info[slot].slot_state = DVB_CA_SLOTSTATE_NONE; + } + } + 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; } @@ -1259,10 +1260,10 @@ static int dvb_ca_en50221_io_do_ioctl (struct inode *inode, struct file *file, * * @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); } @@ -1276,121 +1277,120 @@ static int dvb_ca_en50221_io_ioctl (struct inode *inode, struct file *file, * * @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; - 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; - } - if (status != -EAGAIN) - goto exit; - - msleep (1); - } - if (!written) { - status = -EIO; - goto exit; - } - - fragpos += fraglen; - } - status = count + 2; + 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; + } + if (status != -EAGAIN) + goto exit; + + msleep(1); + } + if (!written) { + status = -EIO; + goto exit; + } + + 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; - - down_read (&ca->slot_info[slot].sem); - - 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_read (&ca->slot_info[slot].sem); - - nextslot: - slot = (slot + 1) % ca->slot_count; - slot_count++; - } - - ca->next_read_slot = slot; - return found; + 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; + + down_read(&ca->slot_info[slot].sem); + + 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_read(&ca->slot_info[slot].sem); + + nextslot: + slot = (slot + 1) % ca->slot_count; + slot_count++; + } + + ca->next_read_slot = slot; + return found; } @@ -1404,96 +1404,97 @@ static int dvb_ca_en50221_io_read_condition (struct dvb_ca_private *ca, * * @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; - 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; + 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 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_read (&ca->slot_info[slot].sem); - return status; + up_read(&ca->slot_info[slot].sem); + return status; } @@ -1505,33 +1506,33 @@ static ssize_t dvb_ca_en50221_io_read (struct file *file, char __user * buf, * * @return 0 on success, <0 on failure. */ -static int dvb_ca_en50221_io_open (struct inode *inode, struct file *file) +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 = (struct dvb_device *) file->private_data; + struct dvb_ca_private *ca = (struct dvb_ca_private *) 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; + err = dvb_generic_open(inode, file); + if (err < 0) + return err; - for (i = 0; i < ca->slot_count; i++) { + 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); - dvb_ringbuffer_flush (&ca->slot_info[i].rx_buffer); - up_write (&ca->slot_info[i].sem); - } - } + if (ca->slot_info[i].slot_state == DVB_CA_SLOTSTATE_RUNNING) { + down_write(&ca->slot_info[i].sem); + dvb_ringbuffer_flush(&ca->slot_info[i].rx_buffer); + up_write(&ca->slot_info[i].sem); + } + } - 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; } @@ -1543,22 +1544,22 @@ static int dvb_ca_en50221_io_open (struct inode *inode, struct file *file) * * @return 0 on success, <0 on failure. */ -static int dvb_ca_en50221_io_release (struct inode *inode, struct file *file) +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 = (struct dvb_device *) file->private_data; + struct dvb_ca_private *ca = (struct dvb_ca_private *) dvbdev->priv; + int err; - dprintk ("%s\n", __FUNCTION__); + dprintk("%s\n", __FUNCTION__); - /* mark the CA device as closed */ - ca->open = 0; - dvb_ca_en50221_thread_update_delay (ca); + /* mark the CA device as closed */ + ca->open = 0; + dvb_ca_en50221_thread_update_delay(ca); - err = dvb_generic_release (inode, file); - if (err < 0) - return err; - return 0; + err = dvb_generic_release(inode, file); + if (err < 0) + return err; + return 0; } @@ -1570,54 +1571,53 @@ static int dvb_ca_en50221_io_release (struct inode *inode, struct file *file) * * @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 = (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; - dprintk ("%s\n", __FUNCTION__); + dprintk("%s\n", __FUNCTION__); - if (dvb_ca_en50221_io_read_condition (ca, &result, &slot) == 1) { - up_read (&ca->slot_info[slot].sem); - mask |= POLLIN; - } + if (dvb_ca_en50221_io_read_condition(ca, &result, &slot) == 1) { + up_read(&ca->slot_info[slot].sem); + 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_read (&ca->slot_info[slot].sem); - mask |= POLLIN; - } + if (dvb_ca_en50221_io_read_condition(ca, &result, &slot) == 1) { + up_read(&ca->slot_info[slot].sem); + mask |= POLLIN; + } - return mask; + return mask; } 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 = NULL, - .users = 1, - .readers = 1, - .writers = 1, - .fops = &dvb_ca_fops, + .priv = NULL, + .users = 1, + .readers = 1, + .writers = 1, + .fops = &dvb_ca_fops, }; @@ -1635,85 +1635,84 @@ static struct dvb_device dvbdev_ca = { * * @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_rwsem (&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; - -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; + 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_rwsem(&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; + + 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; } @@ -1724,31 +1723,31 @@ error: * @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 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); - } - kfree (ca->slot_info); - dvb_unregister_device (ca->dvbdev); - kfree (ca); - pubca->private = NULL; + 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 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); + } + kfree(ca->slot_info); + dvb_unregister_device(ca->dvbdev); + kfree(ca); + pubca->private = NULL; } |