diff options
| -rw-r--r-- | linux/drivers/media/dvb/dvb-core/Makefile | 3 | ||||
| -rw-r--r-- | linux/drivers/media/dvb/dvb-core/dvb_ca.c | 1928 | ||||
| -rw-r--r-- | linux/drivers/media/dvb/dvb-core/dvb_ca.h | 248 | ||||
| -rw-r--r-- | linux/drivers/media/dvb/dvb-core/dvb_ca_en50221.c | 1635 | ||||
| -rw-r--r-- | linux/drivers/media/dvb/dvb-core/dvb_ca_en50221.h | 128 | ||||
| -rw-r--r-- | linux/drivers/media/dvb/dvb-core/dvb_ksyms.c | 6 | ||||
| -rw-r--r-- | linux/drivers/media/dvb/dvb-core/dvb_ringbuffer.c | 127 | ||||
| -rw-r--r-- | linux/drivers/media/dvb/dvb-core/dvb_ringbuffer.h | 69 | ||||
| -rw-r--r-- | linux/drivers/media/dvb/ttpci/budget-ci.c | 382 | ||||
| -rw-r--r-- | linux/drivers/media/dvb/ttpci/budget-core.c | 229 | ||||
| -rw-r--r-- | linux/drivers/media/dvb/ttpci/budget.h | 3 | ||||
| -rw-r--r-- | linux/include/media/saa7146.h | 2 |
12 files changed, 2335 insertions, 2425 deletions
diff --git a/linux/drivers/media/dvb/dvb-core/Makefile b/linux/drivers/media/dvb/dvb-core/Makefile index a58e89e8c..712778914 100644 --- a/linux/drivers/media/dvb/dvb-core/Makefile +++ b/linux/drivers/media/dvb/dvb-core/Makefile @@ -3,6 +3,7 @@ # dvb-core-objs = dvbdev.o dmxdev.o dvb_demux.o dvb_filter.o \ - dvb_functions.o dvb_frontend.o dvb_i2c.o dvb_net.o dvb_ksyms.o dvb_ringbuffer.o + dvb_ca_en50221.o dvb_functions.o dvb_frontend.o \ + dvb_i2c.o dvb_net.o dvb_ksyms.o dvb_ringbuffer.o obj-$(CONFIG_DVB_CORE) += dvb-core.o diff --git a/linux/drivers/media/dvb/dvb-core/dvb_ca.c b/linux/drivers/media/dvb/dvb-core/dvb_ca.c deleted file mode 100644 index 51c0b4166..000000000 --- a/linux/drivers/media/dvb/dvb-core/dvb_ca.c +++ /dev/null @@ -1,1928 +0,0 @@ -/* - * dvb_ca.c: generic DVB CA functions - * - * Copyright (C) 2004 Andrew de Quincey - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version 2 - * of the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. - * Or, point your browser to http://www.gnu.org/copyleft/gpl.html - */ - -/* - * In the following, public functions always do locking of slots, private functions do not - * necessarily do locking of slots - they may expect the caller to have locked */ - -#include <linux/errno.h> -#include <linux/slab.h> -#include <linux/list.h> -#include <linux/module.h> -#include <asm/semaphore.h> - -#include "dvb_ca.h" -#include "dvb_functions.h" - -static int dvb_ca_debug = 0; -#define dprintk if (dvb_ca_debug) printk - -#define HOST_LINK_BUF_SIZE 0x200 - -#define RX_BUFFER_SIZE 65540 -#define TX_BUFFER_SIZE 65540 - -#define CTRLIF_DATA 0 -#define CTRLIF_COMMAND 1 -#define CTRLIF_STATUS 1 -#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 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 */ - - -static int dvb_ca_en50221_link_init(struct dvb_ca* ca, int slot); - - -static u8* findstr(u8* haystack, int hlen, u8* needle, int nlen) { - int i; - - for(i=0; i<= hlen - nlen; i++) { - if (!strncmp(haystack+i, needle, nlen)) return haystack+i; - } - - return NULL; -} - - -/* ******************************************************************************** */ -/* Functions for controlling access to slots */ - -/** - * Safely increment the usage counter for a CA slot. - * - * @param ca CA instance. - * @param slot Slot concerned. - * - * @return 0 on success, <0 on failure. - * */ -static int dvb_ca_slot_acquire(struct dvb_ca* ca, int slot) { - int status; - - if (status = down_interruptible(&ca->slot_info[slot].sem)) return status; - - if (!ca->slot_info[slot].cam_present) { - up(&ca->slot_info[slot].sem); - return -EIO; - } - ca->slot_info[slot].usage_counter++; - - up(&ca->slot_info[slot].sem); - return 0; -} - - -/** - * Safely decrement the usage counter for a CA slot. - * - * @param ca CA instance. - * @param slot Slot concerned. - * - * @return 0 on success, <0 on failure. - * */ -static int dvb_ca_slot_release(struct dvb_ca* ca, int slot) { - int status; - - if (status = down_interruptible(&ca->slot_info[slot].sem)) return status; - - ca->slot_info[slot].usage_counter--; - - up(&ca->slot_info[slot].sem); - return(0); -} - - -/** - * Acquire a slot exclusively. The slot semaphore will be left locked on successful - * exit of this function. - * - * @param ca CA instance. - * @param slot Slot concerned. - * - * @return 0 on success, <0 on failure. - * */ -static int dvb_ca_slot_acquire_exclusive(struct dvb_ca* ca, int slot) { - int status; - - while(1) { - /* lock the slot */ - if (status = down_interruptible(&ca->slot_info[slot].sem)) return status; - - /* if there is no CAM, exit straight away */ - if (!ca->slot_info[slot].cam_present) { - up(&ca->slot_info[slot].sem); - return -EIO; - } - - /* if there are no other users of the slot, we've finished */ - if (ca->slot_info[slot].usage_counter == 0) { - ca->slot_info[slot].usage_counter++; - break; - } - - /* sleep a bit and try again */ - up(&ca->slot_info[slot].sem); - dvb_delay(1); - } - - /* DO NOT UNLOCK! */ - return 0; -} - - -/** - * Release an exclusively owned slot. The slot semaphore will be unlocked by this function. - * - * @param ca CA instance. - * @param slot Slot concerned. - * - * @return 0 on success, <0 on failure. - * */ -static int dvb_ca_slot_release_exclusive(struct dvb_ca* ca, int slot) { - ca->slot_info[slot].usage_counter--; - up(&ca->slot_info[slot].sem); - return(0); -} - - - - - -/* ******************************************************************************** */ -/* Functions for link level connection_ids */ - -/** - * Internal function to destroy and unlink a dvb_ca_connection structure. - * - * @param cacon The structure to destroy. - * @param unlink If 1, it will be unlinked from the list. - */ -static void dvb_ca_connection_destroy(struct dvb_ca_connection* cacon, int unlink) { - /* unlink it from the list. */ - if (unlink) - list_del(&cacon->connection); - - /* destroy buffers etc */ - if (cacon->rx_buffer.data) vfree(cacon->rx_buffer.data); - if (cacon->tx_buffer.data) vfree(cacon->tx_buffer.data); - vfree(cacon); -} - - - -/** - * Get or create a dvb_ca_connection structure for a particular slot/connection_id. - * - * @param ca CA device instance. - * @param slot Slot id. - * @param connection_id Connection id to retrieve structure for. - * @param create If 1, and a connection struct was not found, a new one will be created. - * - * @return A dvb_ca_connection structure, or NULL. - */ -static struct dvb_ca_connection* dvb_ca_connection_get(struct dvb_ca* ca, int slot, int connection_id, int create) { - struct dvb_ca_connection* cacon; - u8* mem; - - /* is there already a record for this connection_id */ - list_for_each_entry(cacon, &ca->slot_info[slot].connections, next) { - /* if we found it, return it immediately */ - if (cacon->connection_id == connection_id) { - cacon->last_used = jiffies; - return cacon; - } - } - - /* if we get here, and we've been asked not to create a structure, just return NULL */ - if (!create) { - return NULL; - } - - /* did not find it => create a new connection */ - cacon = vmalloc(sizeof(struct dvb_ca_connection)); - if (cacon == NULL) { - goto error; - } - - /* setup the structure */ - memset(cacon, 0, sizeof(struct dvb_ca_connection)); - cacon->connection_id = connection_id; - cacon->rx_partial_pkt = -1; - cacon->tx_partial_pkt_size = -1; - cacon->last_used = jiffies; - - if (!(mem = vmalloc(RX_BUFFER_SIZE))) { - goto error; - } - dvb_ringbuffer_init(&cacon->rx_buffer, mem, RX_BUFFER_SIZE); - - if (!(mem = vmalloc(TX_BUFFER_SIZE))) { - goto error; - } - dvb_ringbuffer_init(&cacon->tx_buffer, mem, TX_BUFFER_SIZE); - - /* success */ - list_add_tail(&cacon->next, &ca->slot_info[slot].connections); - return cacon; - -error: - if (cacon != NULL) { - dvb_ca_connection_destroy(cacon, 0); - } - return NULL; -} - - - - - -/* ******************************************************************************** */ -/* EN50221 physical interface functions */ - - -/** - * Wait for flags to become set on the STATUS register on a CAM interface, - * checking for errors and timeout. - * - * @param ca CA instance. - * @param slot Slot on interface. - * @param waitfor Flags to wait for. - * @param timeout_ms Timeout in milliseconds. - * - * @return 0 on success, nonzero on error. - */ -static int dvb_ca_en50221_wait_if_status(struct dvb_ca* ca, int slot, u8 waitfor, int timeout_ms) { - unsigned long timeout; - - /* loop until timeout elapsed */ - timeout = jiffies + ((HZ * timeout_ms) / 1000); - while(1) { - /* read the status and check for error */ - int res = ca->read_cam_control(ca, slot, CTRLIF_STATUS); - if (res < 0) return -EIO; - - /* if we got the flags, it was successful! */ - if (res & waitfor) { - return 0; - } - - /* check for timeout */ - if (time_after(jiffies,timeout)) { - break; - } - - /* wait for a bit */ - mdelay(100); // FIXME: is this timeout good? need to investigate - } - - /* if we get here, we've timed out */ - return -ETIMEDOUT; -} - - - -/** - * Reset the CAM control interface. - * - * @param ca CA instance. - * @param slot Slot id. - * - * @return 0 on success, nonzero on failure. - */ -static int dvb_ca_en50221_reset_if(struct dvb_ca* ca, int slot) { - int ret; - - /* reset the interface and wait for FR to be set */ - if (ret = ca->write_cam_control(ca, slot, CTRLIF_COMMAND, CMDREG_RS)) return ret; - if (ret = dvb_ca_cam_wait_if_status(ca, slot, STATUSREG_FR, 2)) return ret; - - /* need to perform link initialisation again */ - return dvb_ca_en50221_link_init(ca, slot); -} - - -/** - * Initialise the link layer connection to a CAM. - * - * @param ca CA instance. - * @param slot Slot id. - * - * @return 0 on success, nonzero on failure. - */ -static int dvb_ca_en50221_link_init(struct dvb_ca* ca, int slot) { - int ret; - int buf_size; - u8 buf[2]; - - /* reset the interface */ - if (ret = dvb_ca_en50221_reset_if(ca, slot)) return ret; - - /* set the host link buffer size temporarily. it will be overwritten with the - * real negotiated size later. */ - ca->slot_info[i]->link_buf_size = 2; - - /* OK, setup to read the buffer size */ - if (ret = ca->write_cam_control(ca, slot, CTRLIF_COMMAND, CMDREG_SR)) return ret; - if (ret = dvb_ca_en50221_wait_if_status(ca, slot, STATUSREG_DA, 2)) return ret; - - /* read the buffer size from the CAM */ - if ((ret = dvb_ca_en50221_read_data(ca, slot, buf, 2)) != 2) return ret; - - /* set everything back to 0 again */ - if (ret = ca->write_cam_control(ca, slot, CTRLIF_COMMAND, 0)) return ret; - - /* store it, and choose the minimum of our buffer and the CAM's buffer size */ - bufsize = (buf[0] << 8) | buf[1]; - if (bufsize > HOST_LINK_BUF_SIZE) bufsize = HOST_LINK_BUF_SIZE; - ca->slot_info[i]->link_buf_size = bufsize; - - /* setup the buffer size in the link_buf */ - buf[0] = bufsize >> 8; - buf[1] = bufsize & 0xff; - - /* OK, setup to write chosen buffer size to CAM */ - if (ret = ca->write_cam_control(ca, slot, CTRLIF_COMMAND, CMDREG_SW)) return ret; - if (ret = dvb_ca_en50221_wait_if_status(ca, slot, STATUSREG_FR, 2)) return ret; - - /* write the buffer size to the CAM */ - if ((ret = dvb_ca_en50221_write_data(ca, slot, buf, 2)) != 2) return ret; - - /* set everything back to 0 again */ - if (ret = ca->write_cam_control(ca, slot, CTRLIF_COMMAND, 0)) return ret; - - /* success */ - return 0; -} - - - -/** - * Parse attribute memory of a CAM module, extracting Config register, and checking - * it is a DVB CAM module. - * - * @param ca CA instance. - * @param slot Slot id. - * - * @return 0 on success, <0 on failure. - */ -static int dvb_ca_en50221_parse_attributes(struct dvb_ca* ca, int slot) { - int address = 0; - int tupleLength; - int tupleType; - char tuple[257]; - char* dvb_str; - int i; - int rasz; - int got_device0a = 0; - int got_device0c = 0; - int got_vers1 = 0; - int got_manfid = 0; - int got_config = 0; - int got_cftableentry = 0; - int end_chain = 0; - - - while(!end_chain) { - /* grab the next tuple length and type */ - if ((tupleType = ca->read_attribute_mem(ca, slot, address++)) < 0) return tupleType; - if ((tupleLength = ca->read_attribute_mem(ca, slot, address++)) < 0) return tupleLength; - - /* read in the whole tuple */ - for(i=0; i< tupleLength; i++) { - tuple[i] = ca->read_attribute_mem(ca, slot, address+i); - } - address += tupleLength; - - /* deal with the types of tuple */ - switch(tupleType) { - case 0x1D: // CISTPL_DEVICE_0A - got_device0a = 1; - break; /* don't bother parsing */ - - case 0x1C: // CISTPL_DEVICE_0C - got_device0c = 1; - break; /* don't bother parsng */ - - case 0x15: // CISTPL_VERS_1 - got_vers1 = 1; - break; /* don't bother parsing */ - - case 0x20: // CISTPL_MANFID - /* check tuple length is valid */ - if (tupleLength != 4) break; - - /* OK, extract manid and devid */ - ca->slot_info[i].manid = (tuple[1] << 8) | tuple[0]; - ca->slot_info[i].devid = (tuple[3] << 8) | tuple[2]; - - got_manfid = 1; - break; - - case 0x1A: // CISTPL_CONFIG - /* check tuple length is valid */ - if (tupleLength < 3) break; - - /* OK, grab length of configbase */ - rasz = tuple[0] & 3; - - /* check there is enough space for everything */ - if (tupleLength < (3 + rasz + 14)) break; - - /* extract the configbase */ - ca->slot_info[i].config_base = 0; - for(i=0; i< rasz+1; i++) { - ca->slot_info[i].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) break; - if (tupleLength < ((dvb_str - tuple) + 12)) break; - - /* 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; - } - - got_config = 1; - break; - - case 0x1D: // CISTPL_CFTABLE_ENTRY - if (tupleLength < (2+11+17)) break; - - /* get the config option */ - ca->slot_info[i].config_option = tuple[0] & 0x3f; - - /* does it contain an interrupt descriptor structure? */ - i = 1; - if (tuple[0] & 0x80) i++; - if (tuple[i] & 0x10) { - ca->slot_info[i].irq_supported = 1; - } else - ca->slot_info[i].irq_supported = 0; - } - - /* 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 0xFF: // end of chain - end_chain = true; - break; - - default: /* Unknown tuple type */ - /* just skip this tuple and move to the next one */ - break; - } - } - - // OK, did we get everything we were looking for? - if (!got_device0a || !got_device0c || !got_vers1 || !got_manfid || !got_config || !got_cftablenentry) { - printk("dvb_ca: Non-CAM PC card detected\n"); - return -EINVAL; - } - - // success! - return 0; -} - - - -/** - * Initialise a CAM module. - * - * @param ca CA instance. - * @param slot Slot containing the CAM. - */ -static void dvb_ca_en50221_init(struct dvb_ca* ca, int slot) { - int tmp; - - /* reset the CAM module */ - tmp = ca->read_attribute_mem(ca, slot, ca->slot_info[slot].config_base); - ca->write_attribute_mem(ca, slot, ca->slot_info[slot].config_base, tmp | 0x80); - dvb_delay(1); - ca->write_attribute_mem(ca, slot, ca->slot_info[slot].config_base, tmp); - dvb_delay(1); - - /* set the config option */ - tmp = (tmp & 0x3f) | ca->slot_info[slot].config_option; - ca->write_attribute_mem(ca, slot, ca->slot_info[slot].config_base, tmp); -} - - -/** - * This function talks to an EN50221 CAM control interface. It reads a buffer of - * data from the CAM. The data can either be stored in a supplied buffer, or - * automatically be added to the correct place in the CA slot/connection buffer structures. - * - * @param ca CA instance. - * @param slot Slot to read from. - * @param buf If non-NULL, the data will be written to this buffer. If NULL, - * the data will be added into the buffering system as a normal fragment. - * @param count Size of buf. Ignored if buf is NULL. - * - * @return Number of bytes read, or < 0 on error - */ -static int dvb_ca_en50221_read_data(struct dvb_ca* ca, int slot, u8* buf, int count) { - int bytes_read; - int status; - u8 buf[HOST_LINK_BUF_SIZE]; - u8 last_fragment; - u8 connection_id; - - /* if the CA device is not open, do not attempt to receive data from it */ - if (!ca->open) return -EIO; - - /* acquire the slot */ - if (status = dvb_ca_slot_acquire(ca, slot)) return status; - - /* reset the interface if there's been a tx error */ - if ((status = ca->read_cam_control(ca, slot, CTRLIF_STATUS)) < 0) goto exit; - if (status & STATUSREG_TXERR) dvb_ca_en50221_reset_if(ca, slot); - - /* check if data is available */ - if ((status = ca->read_cam_control(ca, slot, CTRLIF_STATUS)) < 0) goto exit; - if (!(status & STATUSREG_DA)) { - /* no data */ - status = 0; - goto exit; - } - - /* read the amount of data */ - if ((status = ca->read_cam_control(ca, slot, CTRLIF_SIZE_HIGH)) < 0) goto exit; - bytes_read = status << 8; - if ((status = ca->read_cam_control(ca, slot, CTRLIF_SIZE_LOW)) < 0) goto exit; - bytes_read |= status; - - /* check it will fit */ - if (bytes_read > ca->slot_info[i].link_buf_size) { - printk("dvb_ca: CAM tried to send a buffer larger than the link buffer size!\n"); - status = -EIO; - goto exit; - } - - /* fill the buffer */ - for(i=0; i < bytes_read; i++) { - /* read byte and check */ - if ((status = ca->read_cam_control(ca, slot, CTRLIF_DATA)) < 0) goto exit; - - /* OK, store it in the buffer */ - buf[i] = res; - - /* at this point, RE=1, DA=0 during the transfer */ - } - - /* check for read error (RE should now go to 0) */ - if ((status = ca->read_cam_control(ca, slot, CTRLIF_STATUS)) < 0) goto exit; - if (status & STATUSREG_RE) { - status = -EIO; - goto exit; - } - - /* check there are at least two bytes received! */ - if (bytes_read < 2) { - printk("dvb_ca: CAM sent a buffer that was less than 2 bytes!\n"); - status = -EIO; - goto exit; - } - - /* extract information about this buffer */ - connection_id = buf[0]; - last_fragment = (buf[1] & 0x80) ? 0 : 1; // received bit clear => last fragment - - /* OK, add it to the receive buffer */ - if ((status = dvb_ca_buf_copy_from_cam(ca, buf+2, bytes_read-2, last_fragment, slot, connection_id)) < 0) { - goto exit; - } - - /* return the number of bytes read */ - status = bytes_read; - - exit: - ca->write_cam_control(ca, slot, CTRLIF_COMMAND, 0); - dvb_ca_slot_release(ca, slot); - return status; -} - - -/** - * This function talks to an EN50221 CAM control interface. It writes a buffer of data - * to a CAM. The data to write will can either come from a supplied buffer, or from the - * buffering system identified by the slot/connection_id. - * - * @param ca CA instance. - * @param slot Slot to read from. - * @param connection_id Connection id to write data from. Ignored if buf is non-NULL. - * @param buf If non-NULL, the data in this buffer is treated as a complete link-level packet to - * be written. If NULL, the data will be extracted from the buffering system for the slot/connection_id. - * @param count Size of buf. Ignored if buf is NULL. - * - * @return Number of bytes written, or < 0 on error. - */ -static int dvb_ca_en50221_write_data(struct dvb_ca* ca, int slot, int connection_id, u8* buf, int count) { - int status; - u8 buf[HOST_LINK_BUF_SIZE]; - u8 last_fragment; - int bytes_write; - - - /* if the CA device is not open, do not attempt to send data to it */ - if (!ca->open) return -EIO; - - /* acquire the slot */ - if (status = dvb_ca_slot_acquire(ca, slot)) return status; - - /* reset the interface if there's been a tx error */ - if ((status = ca->read_cam_control(ca, slot, CTRLIF_STATUS)) < 0) goto exit; - if (status & STATUSREG_TXERR) dvb_cam_reset_if(ca, slot); - - /* check if interface does not have data available */ - if ((status = ca->read_cam_control(ca, slot, CTRLIF_STATUS)) < 0) goto exit; - if (status & STATUSREG_DA) { - status = -EAGAIN; - goto exit; - } - - /* OK, set HC bit */ - if (status = ca->write_cam_control(ca, slot, CTRLIF_COMMAND, CMDREG_HC)) goto exit; - - /* check if interface is free */ - if ((status = ca->read_cam_control(ca, slot, CTRLIF_STATUS)) < 0) goto exit; - if (!(status & STATUSREG_FR)) { - /* it wasn't free => try again later */ - res = -EAGAIN; - goto exit; - } - - /* grab some data to send */ - bytes_write = dvb_ca_buf_copy_to_cam(ca, buf + 2, ca->slot_info[i].link_buf_size - 2, &last_fragment, slot, connection_id); - if (bytes_write <= 0) { - res = bytes_write; - goto exit; - } - - /* setup the buffer header */ - buf[0] = connection_id; - buf[1] = last_fragment ? 0 : 0x80; - bytes_write += 2; // for the header - - /* send the amount of data */ - if (status = ca->write_cam_control(ca, slot, CTRLIF_SIZE_HIGH, bytes_write >> 8)) goto exit; - if (status = ca->write_cam_control(ca, slot, CTRLIF_SIZE_LOW, bytes_write & 0xff)) goto exit; - - /* send the buffer */ - for(i=0; i < bytes_read; i++) { - if (status = ca->write_cam_control(ca, slot, CTRLIF_DATA, ca->slot_info[slot].link_buf[i])) goto exit; - - /* At this point, WE=1, FR=0 during the transfer */ - } - - /* check for write error (WE should now be 0) */ - if ((status = ca->read_cam_control(ca, slot, CTRLIF_STATUS)) < 0) goto exit; - if (status & STATUSREG_WE) { - res = -EIO; - goto exit; - } - - /* return the number of bytes read */ - status = bytes_write; - -exit: - ca->write_cam_control(ca, slot, CTRLIF_COMMAND, 0); - dvb_ca_slot_release(ca, slot); - return status; -} - - - -/** - * A CAM has been inserted => initialise it. - * - * @param ca CA instance. - * @param slot Slot containing the CAM to initialise. - */ -static int dvb_ca_en50221_slot_init(struct dvb_ca* ca, int slot) { - int status; - int old_camchange_count; - - dprintk ("%s\n", __FUNCTION__); - - /* acquire the slot exclusively */ - if (status = dvb_ca_slot_acquire_exclusive(ca, slot)) return status; - - /* get the current number of reported CAM changes */ - old_camchange_count = atomic_get(&ca->slot_info[slot].camchange_count); - - /* reset slot */ - ca->slot_reset(ca, slot); - - /* check it is a DVB cam and get hardware info */ - if (status = dvb_ca_en50221_parse_attributes(ca, slot)) { - dvb_ca_slot_release_exclusive(ca, slot); - return status; - } - - /* setup CAM hardware */ - if (status = dvb_ca_en50221_init(ca, slot)) { - dvb_ca_slot_release_exclusive(ca, slot); - return status; - } - - /* check for a CAM change before bothering to initialise it */ - if (atomic_get(&ca->camchange_count) != old_camchange_count) { - dvb_ca_slot_release_exclusive(ca, slot); - return -EIO; - } - - /* perform CAM link protocol init */ - if (status = dvb_ca_en50221_link_init(ca, slot)) { - dvb_ca_slot_release_exclusive(ca, slot); - return status; - } - - /* OK, slot is now active */ - INIT_LIST_HEAD(&ca->slot[info].connections); - atomic_set(&ca->slot_info[slot].write_count, 0); - atomic_set(&ca->slot_info[slot].read_count, 0); - ca->slot_info[slot].cam_present = 1; - - /* success */ - dvb_ca_slot_release_exclusive(ca, slot); - return 0; -} - - -/** - * A CAM has been removed => shut it down. - * - * @param ca CA instance. - * @param slot Slot to shut down. - */ -static int dvb_ca_en50221_slot_shutdown(struct dvb_ca* ca, int slot) { - struct dvb_ca_connection* cacon; - struct dvb_ca_connection* tmp; - int status; - - dprintk ("%s\n", __FUNCTION__); - - /* acquire the slot exclusively */ - if (status = dvb_ca_slot_acquire_exclusive(ca, slot)) return status; - - /* there is no longer a CAM present in this slot */ - ca->slot_info[slot].cam_present = 0; - - /* bypass the TS feed to that slot, then reset it */ - ca->slot_ts_bypass(ca, slot, 1); - ca->slot_reset(ca, slot); - - /* flush the buffers on this slot */ - /* cannot use dvb_ca_buf_flush_buffers() here because it locks exclusively as well */ - list_for_each_entry_safe(cacon, tmp, &ca->slot_info[slot].connections, next) { - dvb_ca_connection_destroy(cacon, 1); - } - - /* finished modifying slot structures */ - dvb_ca_slot_release_exclusive(ca, slot); - - /* need to wake up all read and write processes to check if they're now - trying to write to a defunct CAM */ - wake_up_interruptible(&ca->read_queue); - wake_up_interruptible(&ca->write_queue); - - /* success */ - return 0; -} - -/** - * A CAMCHANGE IRQ has occurred. - * - * @param ca CA instance. - * @param slot Slot concerned. - */ -void dvb_ca_en50221_camchange_irq(struct dvb_ca* ca, int slot) { - atomic_inc(&ca->slot_info[slot].camchange_count); -} - -/** - * A READDATA IRQ has occurred. - * - * @param ca CA instance. - * @param slot Slot concerned. - */ -void dvb_ca_en50221_readdata_irq(struct dvb_ca* ca, int slot) { - atomic_inc(&ca->slot_info[slot].read_count); -} - - - -/* ******************************************************************************** */ -/* Monitoring thread */ - -/** - * Wake up the DVB CA thread - */ -static void dvb_ca_wakeup(struct dvb_ca* ca) { - ca->wakeup = 1; - wake_up_interruptible(&ca->wait_queue); -} - -/** - * Used by the CA thread to determine if an early wakeup is necessary - */ -static int dvb_ca_should_wakeup(struct dvb_ca* ca) { - if (ca->wakeup) { - ca->wakeup = 0; - return 1; - } - if (ca->exit) return 1; - return 0; -} - -/** - * Kernel thread which monitors CA slots for CAM changes, and performs data transfers. - */ -static int dvb_ca_thread(void* data) { - struct dvb_ca *ca = (struct dvb_ca*) data; - struct dvb_ca_connection* cacon; - struct dvb_ca_connection* tmp; - char name[15]; - int slot; - int timeout; - unsigned long scan_connections = jiffies + (60*HZ); - - dprintk ("%s\n", __FUNCTION__); - - /* setup kernel thread */ - snprintf(name, sizeof(name), "kdvb-ca"); - dvb_kernel_thread_setup(name); - - /* main loop */ - while(!ca->exit) { - up (&ca->thread_sem); /* is locked when we enter the thread... */ - - /* sleep for a bit */ - timeout = wait_event_interruptible_timeout(ca->wait_queue,0 != dvb_ca_should_wakeup(ca), HZ/10); - if ((-ERESTARTSYS == timeout) || (ca->exit)) { - /* got signal or quitting */ - break; - } - if (down_interruptible(&ca->thread_sem)) break; - - /* go through all the slots processing them */ - for(slot=0; slot < ca->slot_count; slot++) { - - /* poll for CAM changes if there aren't any IRQs for that - * OR: if we've have a >1 CAMCHANGE counter in IRQ mode */ - if ((!(ca->flags & DVB_CA_FLAG_EN50221_IRQ_CAMCHANGE)) || - (atomic_get(ca->slot_info[slot].camchange_count))) { - // setup the flag for when we have no CAMCHANGE IRQ, and therefore no camchange_count - int no_irqs_flag = 0; - if (!(ca->flags & DVB_CA_FLAG_EN50221_IRQ_CAMCHANGE)) no_irqs_flag = 1; - - // In IRQ mode, we keep looping until no more CAM changes are reported. - while(atomic_get(ca->slot_info[slot].camchange_count) || no_irqs_flag) { - /* determine the hardware status of the CAM */ - int slot_status = ca->slot_status(ca, slot); - int cam_present_now = (slot_status & DVB_CA_SLOT_CAM_PRESENT) ? 1: 0; - int cam_changed = (slot_status & DVB_CA_SLOT_CAM_CHANGED) ? 1: 0; - if (!cam_changed) { - cam_changed = (cam_present_now != ca->slot_info[slot].cam_present); - } - - /* if cam status has changed => update */ - if (cam_changed) { - /* clear down an old CI slot */ - if (ca->slot_info[slot].cam_present) dvb_ca_en50221_cam_slot_shutdown(ca, slot); - - /* if a CAM is NOW present, initialise it */ - if (cam_present_now) dvb_ca_en50221_cam_slot_init(ca, slot); - } - - /* if we don't have a CAMCHANGE IRQ, exit the loop after one iteration */ - if (no_irqs_flag) break; - - /* we've handled one change in IRQ mode; decrement the counter */ - atomic_dec(&ca->slot_info[slot].camchange_count); - } - } - - /* do any reading and writing necessary */ - if (ca->open && (ca->slot_info[slot].cam_present)) { - // FIXME: sort it out! - - /* if the CAM or the CI interface itself doesn't support IRQs, need to poll for reads */ - if ((!ca->slot_info[slot].irq_supported) || (!ca->flags & DVB_CA_FLAG_EN50221_IRQ_READ)) { - /* if there is data to be read, read it! */ - while(dvb_ca_cam_read_data(ca, slot) > 0); - } - } - - /* tidy up any defunct connection structures every 60 seconds */ - if ((ca->slot_info[slot].cam_present) && (time_after(jiffies, scan_connections))) { - - if (status = dvb_ca_slot_acquire_exclusive(ca, slot)) break; - - list_for_each_entry_safe(cacon, tmp, &ca->slot_info[slot].connections, next) { - - /* tear down a connection structure if it hasn't been used for 120 seconds */ - unsigned long timeout = cacon->last_used + (120 * HZ); - if (time_after(jiffies, timeout)) { - dvb_ca_connection_destroy(cacon, 1); - } - } - - dvb_ca_slot_release_exclusive(ca, slot); - } - } - } - - up(&ca->thread_sem); - mb(); - - /* completed */ - wake_up_interruptible (&ca->thread_queue); - return(0); -} - - - - -/* ******************************************************************************** */ -/* Packet buffer functions */ - - -/** - * Flush buffers associated with a particular CA slot. - * - * @param ca CA instance. - * @param slot Slot whose buffers are to be to flushed. - * - * @return 0 on success, <0 on failure. - */ -int dvb_ca_buf_flush_buffers(struct dvb_ca* ca, int slot) { - struct dvb_ca_connection* cacon; - struct dvb_ca_connection* tmp; - int status; - - if (status = dvb_ca_slot_acquire_exclusive(ca, slot)) return status; - - /* just destroy all the connections for this slot */ - list_for_each_entry_safe(cacon, tmp, &ca->slot_info[slot].connections, next) { - dvb_ca_connection_destroy(cacon, 1); - } - - dvb_ca_slot_release_exclusive(ca, slot); - return 0; -} - - - -/** - * This function does not talk to a CAM; it is a utility function for grabbing data from the - * connection buffers in chunks suitable for use by hardware-dependent code. - * - * Copy data to be sent to the CAM from the cache into the - * supplied buffer. This call is for lower layers to get data still to - * be sent to the CAM. The buffer is filled by the layers which receive data - * from userspace. - * - * @param ca CA instance. - * @param dest Where to put the data. - * @param len Size of destination buffer. - * @param last_fragment. This will be set to 1 if this is the last fragment of a packet, - * or 0 if there is still more data in this packet to be transmitted. - * @param slot Slot concerned. - * @param connection_id Connection id concerned. - * - * @return Number of bytes copied to dest, or <0 on error. - */ -int dvb_ca_buf_copy_to_cam(dvb_ca* ca, u8 *dest, int len, u8* last_fragment, u8 slot, u8 connection_id) -{ - struct dvb_ca_connection* cacon; - int status; - - /* in the buffer, each packet has a 3 byte header as follows: - 0: High byte of total packet size. - 1: Low byte of total packet size. - 2: Flag byte. 0=> packet incomplete. 1=> packet complete. - These are all updated as data fragments are appended to the packet. - */ - - - /* acquire the slot */ - if (status = dvb_ca_slot_acquire(ca, slot)) return status; - - /* get the connection struct for this slot/connection id */ - cacon = dvb_ca_connection_get(ca, slot, connection_id, 0); - - /* if we didn't find a connection struct, there is no data! */ - if (cacon == NULL) { - dvb_ca_slot_release(ca, slot); - *last_fragment = 1; - return 0; - } - - /* if there is no data, there is no point going on */ - if (dvb_ringbuffer_avail(&cacon->tx_buffer) == 0) { - dvb_ca_slot_release(ca, slot); - *last_fragment = 1; - return 0; - } - - /* if we're not in the middle of sending a packet... */ - if (cacon->tx_partial_pkt_size == -1); - /* ensure there is actually enough data for a header */ - if (dvb_ringbuffer_avail(&cacon->tx_buffer) < 3) { - dvb_ca_slot_release(ca, slot); - *last_fragment = 1; - return 0; - } - - /* if the packet data is not available yet, exit straight away */ - if (DVB_RINGBUFFER_PEEK(&cacon->tx_buffer, 2) != 1) { - dvb_ca_slot_release(ca, slot); - *last_fragment = 1; - return 0; - } - - /* get the size of the next packet */ - cacon->tx_partial_pkt_size = DVB_RINGBUFFER_PEEK(&cacon->tx_buffer, 0) << 8; - cacon->tx_partial_pkt_size |= DVB_RINGBUFFER_PEEK(&cacon->tx_buffer, 1); - DVB_RINGBUFFER_SKIP(&cacon->tx_buffer, 3); - } - - /* don't copy more data than is actually available */ - if (cacon->tx_partial_pkt_size < len) len = cacon->partial_pkt_size; - - /* copy the data into dest */ - dvb_ringbuffer_read(&cacon->tx_buffer, dest, len, 0); - - /* update the amount of consumed data */ - cacon->tx_partial_pkt_size -= len; - if (cacon->tx_partial_pkt_size == 0) { - /* whole packet consumed => move to next */ - cacon->tx_partial_pkt_size = -1; - - /* wake up the wait queues now writing is completed */ - wake_up_interruptible(&ca->read_queue); - wake_up_interruptible(&ca->write_queue); - } - - /* ok, return the amount of data copied this time */ - *last_fragment = (cacon->tx_partial_pkt_size == -1) ? 1 : 0; - dvb_ca_slot_release(ca, slot); - return len; -} - - - -/** - * This function does not talk to a CAM; it is a utility function for caching data retrieved - * from a CAM by some hardware-dependent method and storing it in the connection buffers. - * - * Copy data recieved from the CAM into the cache. This call is for lower layers - * to cache data received from the CAM. The buffer is emptied by the higher layers - * which send data to userspace. - * - * @param ca CA instance. - * @param data Buffer containing data. - * @param len Number of bytes. - * @param last_fragment 1 if this is the last fragment of a packet, or 0 if not. - * @param slot Slot the data was received from. - * @param connection_id Connection id the data was received from. - * - * @return 0 on success, or -1 if there was not enough space. - * If -1 is returned, the packet will be automatically discarded. Any further data written - * for this packet (last_fragment==0) will also be discarded until the next packet (i.e. the - * write AFTER the write with last_fragment==1). - */ -int dvb_ca_buf_copy_from_cam(dvb_ca* ca, u8 *data, int len, u8 last_fragment, u8 slot, u8 connection_id) -{ - struct dvb_ca_connection* cacon; - int total_length = 0; - int status; - - - /* in the buffer, each packet has a 3 byte header as follows: - 0: High byte of total packet size. - 1: Low byte of total packet size. - 2: Flag byte. 0=> packet incomplete. 1=> packet complete. - These are all updated as data fragments are appended to the packet. - */ - - /* acquire the slot */ - if (status = dvb_ca_slot_acquire(ca, slot)) return status; - - /* get the connection struct for this slot/connection id */ - cacon = dvb_ca_connection_get(ca, slot, connection_id, 1); - if (cacon == NULL) { - dvb_ca_slot_release(ca, slot); - return -1; - } - - /* check if we're discarding the current packet */ - if (cacon->rx_partial_pkt == -2) { - /* if it is the last_fragment of a packet, set the flags appropriately */ - if (last_fragment) { - - /* we're NOT in the middle of a partial any more */ - cacon->rx_partial_pkt = -1; - } - - /* indicate we're discarding this bit */ - dvb_ca_slot_release(ca, slot); - return -1; - } else if (cacon->rx_partial_pkt == -1) { - /* check we've got enough space for the data + 3 byte header */ - if (dvb_ringbuffer_free(&cacon->rx_buffer) < (len + 3)) { - - /* if it is not the last fragment, we need to discard any other data written for this packet */ - if (!last_fragment) { - - /* set the rx_partial_pkt to indicate discarding in progress */ - cacon->rx_partial_pkt = -2; - } - - /* indicate we're discarding */ - dvb_ca_slot_release(ca, slot); - return -1; - } - - /* record position partial packet starts at */ - cacon->rx_partial_pkt = cacon->rx_buffer.pwrite - cacon->rx_buffer.data; - - /* build the dummy (for the moment) packet header */ - DVB_RINGBUFFER_WRITE_BYTE(&cacon->rx_buffer, 0); - DVB_RINGBUFFER_WRITE_BYTE(&cacon->rx_buffer, 0); - DVB_RINGBUFFER_WRITE_BYTE(&cacon->rx_buffer, 0); - } else { - /* check we've got enough space for this fragment, if not, need to discard the current packet */ - if (dvb_ringbuffer_free(&cacon->rx_buffer) < len) { - /* roll the write pointer back to the start of the packet being discarded */ - cacon->rx_buffer.pwrite = cacon->rx_buffer.data + cacon->rx_partial_pkt; - - /* mark the current packet to be discarded */ - cacon->rx_partial_pkt = -2; - - /* if it is the last_fragment of a packet, set the flags appropriately */ - if (last_fragment) { - /* we're NOT in the middle of a packet */ - cacon->rx_partial_pkt = -1; - } - - dvb_ca_slot_release(ca, slot); - return -1; - } - - /* get the current length of the partial packet */ - total_length = cacon->rx_buffer.data[(cacon->rx_partial_pkt + 0) % cacon->rx_buffer.size] << 8; - total_length |= cacon->rx_buffer.data[(cacon->rx_partial_pkt + 1) % cacon->rx_buffer.size]; - } - - /* store the data */ - dvb_ringbuffer_write(&cacon->rx_buffer, data, len, 0); - - /* update the length of the packet in the packet header */ - total_length += len; - cacon->rx_buffer.data[(cacon->rx_partial_pkt + 0) % cacon->rx_buffer.size] = total_length >> 8; - cacon->rx_buffer.data[(cacon->rx_partial_pkt + 1) % cacon->rx_buffer.size] = (total_length & 0xff); - - /* if this is the last fragment, tidy up */ - if (last_fragment) { - /* mark the packet as complete */ - cacon->rx_buffer.data[(cacon->rx_partial_pkt + 2) % cacon->rx_buffer.size] = 1; - - /* we no longer have a partial packet */ - cacon->rx_partial_pkt = -1; - - /* ok, wake up everything now reading is complete */ - wake_up_interruptible(&ca->read_queue); - wake_up_interruptible(&ca->write_queue); - } - - /* success */ - dvb_ca_slot_release(ca, slot); - return 0; -} - - -#define DVB_CA_BUF_COPY_FROM_USER_CONDITION \ -({ \ - if ((err = dvb_ca_slot_acquire(ca, slot)) == 0) { \ - cacon = dvb_ca_connection_get(ca, slot, connection_id, 1); \ - if (cacon == NULL) { \ - err = -EIO; \ - dvb_ca_slot_release(ca, slot); \ - } else { \ - err = dvb_ringbuffer_free(&cacon->tx_buffer) >= (count+3) \ - if (!err) dvb_ca_slot_release(ca, slot); \ - } \ - } \ - err; \ -}) - - -/** - * Function to copy a packet supplied by the user into the appropriate slot/connection's tx_buffer. - * - * @param ca CA instance. - * @param file Associated file. - * @param buf Source buffer (userspace). - * @param count Size of buffer. - * @param ppos Position in file (ignored). - * @param slot Slot to write to. - * @param connection_id Id of connection to write to. - * - * @return Number of bytes copied, or <0 on error. - */ -static ssize_t dvb_ca_buf_copy_from_user(dvb_ca* ca, struct file *file, const char *buf, size_t count, loff_t *ppos, int slot, int connection_id) { - dvb_ca_connection* cacon; - int status; - int write_pos; - int err; - - /* Packets in the buffer have a 3 byte header as follows: - 0: MSB of total packet size. - 1: LSB of total packet size. - 2: Flag byte. 0=> packet incomplete. 1=> packet complete. - These are all updated as data fragments are appended to the packet. - */ - - /* acquire the slot */ - if (status = dvb_ca_slot_acquire(ca, slot)) return status; - - /* locate the connection to write to */ - cacon = dvb_ca_connection_get(ca, slot, connection_id, 1); - if (cacon == NULL) { - dvb_ca_slot_release(ca, slot); - return -EIO; - } - - /* check if the packet is WAY too big */ - if ((count + 3) > cacon->tx_buffer.size) { - dvb_ca_slot_release(ca, slot); - return -EINVAL; - } - - /* OK, block if there isn't enough space at the moment */ - if (dvb_ringbuffer_free(&cacon->tx_buffer) < (count + 3)) { - - /* if we're in non blocking mode... */ - if (file->f_flags & O_NONBLOCK) { - dvb_ca_slot_release(ca, slot); - return -EWOULDBLOCK; - } - - /* wait for some space */ - dvb_ca_slot_release(ca, slot); - if ((status = wait_event_interruptible(ca->write_queue, DVB_CA_BUF_COPY_FROM_USER_CONDITION)) < 0) { - /* slot is already released if the above failed */ - return status; - } - - /* the wait was successful => slot is now reacquired */ - } - - /* write the packet header */ - write_pos = cacon->tx_buffer.pwrite - cacon->tx_buffer.data; - DVB_RINGBUFFER_WRITE_BYTE(&cacon->tx_buffer, count >> 8); - DVB_RINGBUFFER_WRITE_BYTE(&cacon->tx_buffer, count & 0xff); - DVB_RINGBUFFER_WRITE_BYTE(&cacon->tx_buffer, 0); - - /* write the packet data to the buffer */ - if (dvb_ringbuffer_write(&cacon->tx_buffer, buf+3, count, 1) != count) { - - /* roll the write pointer back to the start of the packet being discarded */ - cacon->tx_buffer.pwrite = cacon->tx_buffer.data + write_pos; - - /* tell userspace */ - dvb_ca_slot_release(ca, slot); - return -EFAULT; - } - - /* mark the packet as available */ - cacon->tx_buffer.data[(write_pos + 2) % cacon->tx_buffer.size] = 1; - - /* return number of bytes written */ - dvb_ca_slot_release(ca, slot); - return count; -} - -// TODO: we should maybe remember the previous slot/connection and the next time start -// at the one after, to give them equal priority. -#define DVB_CA_BUF_COPY_TO_USER_CONDITION \ -({ \ - for(slot=0; slot < ca->slot_count; slot++) { \ - \ - if (dvb_ca_slot_acquire(ca, slot) == 0) { \ - \ - /* go through each connection id to see if there is data available */ \ - list_for_each_entry(cacon, &ca->slot_info[slot].connections, next) { \ - err = dvb_ringbuffer_avail(&cacon->rx_buffer) >= 3; \ - if (err) goto completed; \ - } \ - dvb_ca_slot_release(ca, slot); \ - } \ - } \ - completed: \ - err; \ -}) - - -/** - * Function to copy a packet received from the CAM to a buffer supplied by the user. - * - * @param ca CA instance. - * @param file Associated file. - * @param buf Destination buffer (userspace). - * @param count Size of buffer. - * @param ppos Position in file (ignored). - * @param _slot Updated to contain the slot received from. - * @param connection_id Updated to contain the connection_id received from. - * - * @return Number of bytes copied, or <0 on error. - */ -static ssize_t dvb_ca_buf_copy_to_user(dvb_ca* ca, struct file *file, char *buf, size_t count, loff_t *ppos, u8* _slot, u8* connection_id) { - dvb_ca_connection* cacon; - int slot; - int packet_size; - int split; - int status; - int err; - - /* Packets in the buffer have a 3 byte header as follows: - 0: MSB of total packet size. - 1: LSB of total packet size. - 2: Flag byte. 0=> packet incomplete. 1=> packet complete. - These are all updated as data fragments are appended to the packet. - */ - - /* check there is some space in the user-supplied destination buffer */ - if (count == 0) return 0; - - /* get a slot/connection to read from */ - if ((status = DVB_CA_BUF_COPY_TO_USER_CONDITION) == 0) { - - /* if we're in nonblocking mode, exit immediately */ - if (file->f_flags & O_NONBLOCK) - return -EWOULDBLOCK; - - /* wait for some data */ - if ((status = wait_event_interruptible(ca->read_queue, DVB_CA_BUF_COPY_TO_USER_CONDITION)) < 0) { - /* check for errors. No need to relase slot, as we won't have one */ - return status; - } - /* the wait was successful => slot is now acquired */ - } - - /* check for errors. No need to relase slot, as we won't have one */ - if (status < 0) return status; - - /* is the packet marked complete? */ - if (DVB_RINGBUFFER_PEEK(&cacon->rx_buffer, 2) != 1) { - dvb_ca_slot_release(ca, slot); - return 0; - } - - /* get the packet's size */ - packet_size = DVB_RINGBUFFER_PEEK(&cacon->rx_buffer,0) << 8; - packet_size |= DVB_RINGBUFFER_PEEK(&cacon->rx_buffer,1); - - /* is there enough space in the destination buffer */ - if (count < packet_size) { - dvb_ca_slot_release(ca, slot); - return -EINVAL; - } - - /* Copy the data into the user buffer */ - /* Cannot use dvb_ringbuffer_read() here because we have to ignore the - * three byte packet header. We can't just skip it beforehand, because - * the read COULD -EFAULT, and we'd have to roll back. In the meantime, - * something could have overwritten the packet header we skipped. */ - if ((cacon->rx_buffer.pread + 3 + packet_size) > cacon->rx_buffer.size) { - split = cacon->rx_buffer.size - (cacon->rx_buffer.pread + 3); - } else { - split = 0; - } - if (split > 0) { - if (copy_to_user(buf, cacon->rx_buffer.data + cacon->rx_buffer.pread + 3, split)) { - dvb_ca_slot_release(ca, slot); - return -EFAULT; - } - if (copy_to_user(buf+split, cacon->rx_buffer.data, packet_size - split)) { - dvb_ca_slot_release(ca, slot); - return -EFAULT; - } - } else { - if (copy_to_user(buf, cacon->rx_buffer.data + cacon->rx_buffer.pread + 3, packet_size)) { - dvb_ca_slot_release(ca, slot); - return -EFAULT; - } - } - - /* the copy was successful => skip the packet header and the packet data */ - DVB_RINGBUFFER_SKIP(&cacon->rx_buffer, 3 + packet_size); - - /* return number of bytes read */ - *_slot = slot; - *connection_id = cacon->connection_id; - dvb_ca_slot_release(ca, slot); - return packet_size; -} - - - - -/* ******************************************************************************** */ -/* File IO interface functions */ - - - - -/** - * Implementation of file open syscall. - * - * @param inode Inode concerned. - * @param file File concerned. - * - * @return 0 on success, <0 on failure. - */ -int dvb_ca_io_open(struct inode *inode, struct file *file) { - dvb_device_t *dvbdev=(dvb_device_t *) file->private_data; - dvb_ca *ca=(dvb_ca*) dvbdev->priv; - int i; - - int err=dvb_generic_open(inode, file); - if (err<0) - return err; - - ca->open = 1; - return 0; -} - - -/** - * Implementation of file close syscall. - * - * @param inode Inode concerned. - * @param file File concerned. - * - * @return 0 on success, <0 on failure. - */ -int dvb_ca_io_release(struct inode *inode, struct file *file) { - dvb_device_t *dvbdev=(dvb_device_t *) file->private_data; - dvb_ca *ca=(dvb_ca*) dvbdev->priv; - int i; - - /* mark the CA device as closed */ - ca->open = 0; - - /* flush connection buffers */ - for(i=0; i< ca->slot_count; i++) { - dvb_ca_buf_flush_buffers(ca, slot); - } - - int err=dvb_generic_release(inode, file); - if (err<0) - return err; - return 0; -} - - -/** - * Implementation of poll() syscall. - * - * @param file File concerned. - * @param wait poll wait table. - * - * @return Standard poll mask. - */ -unsigned int dvb_ca_io_poll(struct file *file, poll_table *wait) { - dvb_device_t* dvbdev = (dvb_device_t*) file->private_data; - dvb_ca* ca = (dvb_ca*) dvbdev->priv; - unsigned int mask=0; - int slot; - struct dvb_ca_connection* cacon; - - - /* go through each slot looking to see if there is data available */ - for(slot=0; slot < ca->slot_count; slot++) { - - /* acquire the slot */ - dvb_ca_slot_acquire(ca, slot); - - /* go through each connection id to see if there is data available */ - list_for_each_entry(cacon, &ca->slot_info[slot].connections, next) { - - /* if the RX queue is NOT empty... */ - if (dvb_ringbuffer_avail(&cacon->rx_buffer) > 3) { - /* and if the first packet on the RX buffer is marked as complete, data is ready to be read */ - if (DVB_RINGBUFFER_PEEK(&cacon->rx_buffer, 2) == 1) - mask|= POLLIN; - } - - /* is there data still to be written? */ - if (!dvb_ringbuffer_empty(&cacon->tx_buffer)) - mask|=POLLOUT; - } - - /* finished with this slot now */ - dvb_ca_slot_release(ca, slot); - } - - /* if there is something, return now */ - if (mask) return mask; - - /* wait for something to happen */ - poll_wait(file, &ca->read_queue, wait); - - /* see if there is some data available now */ - for(slot=0; slot < ca->slot_count; slot++) { - - /* acquire the slot */ - dvb_ca_slot_acquire(ca, slot); - - /* go through each connection id to see if there is data available */ - list_for_each_entry(cacon, &ca->slot_info[slot].connections, next) { - - /* if the RX queue is NOT empty... */ - if (dvb_ringbuffer_avail(&cacon->rx_buffer) > 3) { - /* and if the first packet on the RX buffer is marked as complete, data is ready to be read */ - if (DVB_RINGBUFFER_PEEK(&cacon->rx_buffer, 2) == 1) - mask|= POLLIN; - } - - /* is there data still to be written? */ - if (!dvb_ringbuffer_empty(&cacon->tx_buffer)) - mask|=POLLOUT; - } - - /* finished with this slot now */ - dvb_ca_slot_release(ca, slot); - } - - return mask; -} - -/** - * Real ioctl implementation. - * NOTE: CA_SEND_MSG/CA_GET_MSG ioctls have userspace buffers passed to them. - * - * @param inode Inode concerned. - * @param file File concerned. - * @param cmd IOCTL command. - * @param arg Associated argument. - * - * @return 0 on success, <0 on error. - */ -int dvb_ca_io_do_ioctl(struct inode *inode, struct file *file, unsigned int cmd, void *parg) { - dvb_device_t *dvbdev=(dvb_device_t *) file->private_data; - dvb_ca* ca=(dvb_ca*) dvbdev->priv; - int err=0; - int slot, connection_id; - ca_msg_t msg; - int msg_buf_offset = &msg.p.en50021.buf - &msg; - - switch (cmd) { - case CA_RESET: - // FIXME: update - err=dvb_ci_ll_reset(&ci->wbuf, file, (int) parg, &ci->info[0]); - break; - - case CA_GET_CAP: - { - if (ca->flags & DVB_CA_FLAG_EN50221) { - ca_cap_t *cap = (ca_cap_t*) parg; - - cap->slot_num=ca->slot_count; - cap->slot_type=CA_EN50221; - cap->descr_num=0; - cap->descr_type=0; - } - break; - } - - - case CA_GET_SLOT_INFO: - { - if (ca->flags & DVB_CA_FLAG_EN50221) { - ca_slot_info_t *info=(ca_slot_info_t *)parg; - - if (info->num > ca->slot_count) - return -EINVAL; - - info->type = CA_EN50221; - info->flags = 0; - if (ca->slot_info[info->num].cam_present) - info->flags = CA_CI_MODULE_PRESENT | CA_CI_MODULE_READY; - } - break; - } - - case CA_GET_MSG: - if (ca->flags & DVB_CA_FLAG_EN50221) { - if (copy_from_user(&msg, parg, msg_buf_offset)) return -EFAULT; - - err = dvb_ca_buf_copy_to_user(ca, file, parg + msg_buf_offset, msg.p.en50221.length, NULL, &slot, &connection_id); - if (err >= 0) { - msg.index = slot; - msg.type = CA_EN50221; - msg.p.en50221.connection_id = connection_id; - msg.p.en50221.length = err; - if (copy_to_user(&msg, parg, msg_buf_offset)) return -EFAULT; - } - } - break; - - case CA_SEND_MSG: - if ((ca->flags & DVB_CA_FLAG_EN50221) && (msg->type == CA_EN50221)) { - if (copy_from_user(&msg, parg, msg_buf_offset)) return -EFAULT; - - err = dvb_ca_buf_copy_from_user(ca, file, parg + msg_buf_offset, msg.p.en50221.length, NULL, - msg.index, msg.p.en50221.connection_id); - } - break; - - case CA_GET_DESCR_INFO: - case CA_SET_DESCR: - case CA_SET_PID: - if (ca->flags & DVB_CA_FLAG_EN50221) { - err=-EINVAL; - } - break; - - default: - err=-EINVAL; - break; - } - - if (ca->ioctl) - err=ca->ioctl(ca, cmd, parg); - if (err<0 && err!=-EINVAL) - return err; - return 0; -} - - -/** - * Wrapper for ioctl implementation. - * - * @param inode Inode concerned. - * @param file File concerned. - * @param cmd IOCTL command. - * @param arg Associated argument. - * - * @return 0 on success, <0 on error. - */ -int dvb_ca_io_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg) { - /* need to pass userspace buffer to these two */ - if ((cmd == CA_GET_MSG) || (cmd == CA_SEND_MSG)) { - return dvb_ca_do_ioctl(inode, file, cmd, (void*) arg); - } - - /* otherwise, just use the easy route */ - return generic_usercopy(inode, file, cmd, arg, dvb_ca_io_do_ioctl); -} - - -/** - * Implementation of write() syscall. - * - * @param file File structure. - * @param buf Source buffer. - * @param count Size of source buffer. - * @param ppos Position in file (ignored). - * - * @return Number of bytes read, or <0 on error. - */ -ssize_t dvb_ca_io_write(struct file *file, const char *buf, size_t count, loff_t *ppos) { - dvb_device_t *dvbdev=(dvb_device_t *) file->private_data; - dvb_ca *ca=(dvb_ca*) dvbdev->priv; - u8 hdr[2]; - u8 slot, connection_id; - - /* Incoming packet has a 2 byte header. hdr[0] = slot_id, hdr[1] = connection_id */ - if (count < 2) return -EINVAL; - - /* extract slot and connection id */ - if (copy_from_user(hdr, buf, 2)) return -EFAULT; - slot = hdr[0]; - connection_id = hdr[1]; - - /* copy the data from the buffer */ - status = dvb_ca_buf_copy_from_user(ca, file, buf+2, count-2, ppos, slot, connection_id); - if (status < 0) return status; - - /* success */ - return status + 2; -} - - -/** - * Implementation of read() syscall. - * - * @param file File structure. - * @param buf Destination buffer. - * @param count Size of destination buffer. - * @param ppos Position in file (ignored). - * - * @return Number of bytes read, or <0 on error. - */ -ssize_t dvb_ca_io_read(struct file *file, char *buf, size_t count, loff_t *ppos) { - dvb_device_t *dvbdev=(dvb_device_t *) file->private_data; - dvb_ca *ca=(dvb_ca*) dvbdev->priv; - int status; - u8 hdr[2]; - u8 slot, connection_id; - - /* Outgoing packet has a 2 byte header. hdr[0] = slot_id, hdr[1] = connection_id */ - if (count < 2) return -EINVAL; - - /* copy the data into the buffer */ - status = dvb_ca_buf_copy_to_user(ca, file, buf+2, count-2, ppos, &slot, &connection_id); - if (status < 0) return status; - - /* set the slot and connection id */ - hdr[0] = slot; - hdr[1] = connetion_id; - if (copy_to_user(buf, hdr, 2)) return -EFAULT; - - /* success */ - return status + 2; -} - -static struct file_operations dvb_ca_fops = { - owner: THIS_MODULE, - read: dvb_ca_io_read, - write: dvb_ca_io_write, - ioctl: dvb_ca_io_ioctl, - open: dvb_ca_io_open, - release: dvb_ca_io_release, - poll: dvb_ca_io_poll, -}; - -static dvb_device_t dvbdev_ca = { - priv: 0, - users: 1, - writers: 1, - fops: &dvb_ca_fops, -}; - - - - - -/* ******************************************************************************** */ -/* Initialisation/shutdown functions */ - - -/** - * Initialise a new DVB CA device. - * - * @param dvb_adapter DVB adapter to attach the new CA device to. - * @param ca_dev The dvb_device_t to return. - * @param ca The dvb_ca instance. - * - * @return 0 on success, nonzero on failure - */ -int dvb_ca_init(dvb_adapter_t *dvb_adapter, dvb_device_t **ca_dev, struct dvb_ca* ca) { - int ret; - - dprintk ("%s\n", __FUNCTION__); - - // FIXME: update - - /* make sure everything is within tolerances */ - if (ca->slot_count > DVB_CA_MAX_SLOTS) { - return -EINVAL; - } - - /* initialise the system parts */ - memset(&(ca->slot_info[0]), 0, sizeof(struct dvb_ca_slot_info) * DVB_CA_MAX_SLOTS); - init_MUTEX(&ca->thread_sem); - init_waitqueue_head(&ca->thread_queue); - init_waitqueue_head(&ca->read_queue); - init_waitqueue_head(&ca->write_queue); - ca->exit = 0; - ca->thread_pid = 0; - - /* register the DVB device */ - ret = dvb_register_device(dvb_adapter, ca_dev, &dvbdev_ca, ca, DVB_DEVICE_CA); - return ret; - - /* create a kthread if necessary */ - if (ca->flags & DVB_CA_FLAG_EN50221) { - - if (signal_pending(current)) return -EINTR; - if (down_interruptible (&ca->thread_sem)) return -EINTR; - - mb(); - - /* create a kthread for monitoring this CA device */ -#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)) - { - /* bug in linux 2.4.x: kernel_thread() fails when the process calling - * open() is run in the debugger (fixed in kernel 2.5). I hope this - * workaround does not have any ugly side effects... - */ - int pt = current->ptrace; - current->ptrace = 0; -#endif - - ret = kernel_thread (dvb_ca_thread, ca, 0); - -#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)) - current->ptrace = pt; - } -#endif - - if (ret < 0) { - printk("dvb_ca_init: failed to start kernel_thread (%d)\n", ret); - up(&ca->thread_sem); - return ret; - } - ca->thread_pid = ret; - } - - /* done */ - return 0; -} - - - -/** - * Release a DVB CA device. - * - * @param ca_dev The dvb_device_t instance for the CA device. - * @param ca The associated dvb_ca instance. - */ -void dvb_ca_release(dvb_device_t *ca_dev, struct dvb_ca* ca) { - dprintk ("%s %s\n", __FUNCTION__, ca->name); - - // FIXME: update - - /* shutdown the thread if there was one */ - if (ca->thread_pid) { - - /* tell the thread to stop */ - ca->exit = 1; - mb(); - - /* check if the thread is really alive */ - if (kill_proc(fe->thread_pid, 0, 1) == -ESRCH) { - printk("dvb_ca_shutdown: thread PID %d already died\n", ca->thread_pid); - /* make sure the mutex was not held by the thread */ - init_MUTEX (&ca->thread_sem); - return; - } - - wake_up_interruptible(&ca->thread_queue); - interruptible_sleep_on(&ca->thread_queue); - - /* paranoia check */ - if (ca->thread_pid) - printk("dvb_ca_shutdown: warning: thread PID %d won't exit\n", ca->thread_pid); - } - - /* disable all CAM modules if we're an EN50221 style CAM */ - if (ca->flags & DVB_CA_FLAG_EN50221) { - for(i=0; i< ca->slot_count; i++) { - dvb_ca_en50221_slot_shutdown(ca, i); - } - } - - /* finally, unregister the device */ - dvb_unregister_device(ca_dev); -} diff --git a/linux/drivers/media/dvb/dvb-core/dvb_ca.h b/linux/drivers/media/dvb/dvb-core/dvb_ca.h deleted file mode 100644 index b3e3ce2d0..000000000 --- a/linux/drivers/media/dvb/dvb-core/dvb_ca.h +++ /dev/null @@ -1,248 +0,0 @@ -/* - * dvb_ca.h: generic DVB CA functions - * - * Copyright (C) 2004 Andrew de Quincey - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public License - * as published by the Free Software Foundation; either version 2.1 - * of the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. - */ - -#ifndef _DVB_CA_H_ -#define _DVB_CA_H_ - -#include <linux/list.h> - -#include "dvbdev.h" - -#define DVB_CA_MAX_SLOTS 4 - -#define DVB_CA_SLOTSTATUS_CAM_PRESENT 1 -#define DVB_CA_SLOTSTATUS_CAM_CHANGED 2 - -#define DVB_CA_FLAG_EN50221 1 -#define DVB_CA_FLAG_EN50221_IRQ_CAMCHANGE 2 -#define DVB_CA_FLAG_EN50221_IRQ_READ 4 - - - -/* A connection id to a CAM */ -struct dvb_ca_connection { - - u8 connection_id; /* ID of this connection */ - - struct dvb_ringbuffer rx_buffer; /* queue of data */ - struct dvb_ringbuffer tx_buffer; /* queue of data */ - - int rx_partial_pkt; /* pointer to the position the current RX partial packet starts at, or -1 for none */ - - int tx_partial_pkt_size; /* amount of data remaining from the current partial packet, or -1 for none */ - - unsigned long last_used; /* last time in jiffies that this connection was used. */ - - list_head next; /* next connection in list */ -}; - -/* Information on a CA slot */ -struct dvb_ca_slot { - - u8 cam_present; /* is a CAM present in this slot or not? */ - - u16 cam_manfid; /* manufacturer ID of the CAM */ - u16 cam_devid; /* device ID of the CAM */ - - u32 config_base; /* base register of CAM config */ - - u8 config_option; /* value to write into Config Control register */ - - u8 irq_supported; /* if 1, the CAM supportes IRQs */ - - int link_buf_size; /* size of the buffer to use when talking to the CAM */ - - struct semaphore sem; /* semaphore for syncing access to slot structure */ - - int usage_counter; /* current usage counter of this slot */ - - atomic_t camchange_count; - atomic_t write_count; - atomic_t read_count; - - list_head connections; /* list of dvb_ca_connection, one per connection_id */ -}; - - -/* Structure describing a CA interface */ -struct dvb_ca { - - int index; //??? - - dvb_adapter* adapter; //??? - - /* Flags describing the interface (DVB_CA_FLAG_*) */ - u32 flags; - - /* number of slots supported by this CA interface */ - unsigned int slot_count; - - /* information on each slot */ - struct dvb_ca_slot slot_info[DVB_CA_MAX_SLOTS]; - - /* functions for accessing attribute memory on the CAM */ - int (*read_attribute_mem)(struct dvb_ca* ca, int slot, int address); - int (*write_attribute_mem)(struct dvb_ca* ca, int slot, int address, u8 value); - - /* functions for accessing the control interface on the CAM */ - int (*read_cam_control)(struct dvb_ca* ca, int slot, u8 address); - int (*write_cam_control)(struct dvb_ca* ca, int slot, u8 address, u8 value); - - /* Functions for controlling slots */ - int (*slot_reset)(struct dvb_ca* ca, int slot); - int (*slot_status)(struct dvb_ca* ca, int slot); - int (*slot_ts_bypass)(struct dvb_ca* ca, int slot, int bypass); - - /* Hardware-specific IOCTL implementation. Set to NULL if you don't care */ - int (*ioctl)(void *, unsigned int cmd, void *parg); - - - /* private data, used by caller */ - void* data; - - /* wait queues for read() and write() operations */ - wait_queue_head_t read_queue; - wait_queue_head_t write_queue; - - /* PID of the monitoring thread */ - pid_t thread_pid; - - /* Semaphore for syncinc access when modifying driver structures */ - struct semaphore thread_sem; - - /* Wait queue used when shutting thread down */ - wait_queue_head_t thread_queue; - - /* Flag indicating when thread should exit */ - int exit; - - /* Flag indicating if the CA device is open */ - int open; -}; - - - - -/* ******************************************************************************** */ -/* Functions for reporting EN50221 IRQ events */ - -/** - * A CAMCHANGE IRQ has occurred. - * - * @param ca CA instance. - * @param slot Slot concerned. - */ -void dvb_ca_en50221_camchange_irq(struct dvb_ca* ca, int slot); - -/** - * A READDATA IRQ has occurred. - * - * @param ca CA instance. - * @param slot Slot concerned. - */ -void dvb_ca_en50221_readdata_irq(struct dvb_ca* ca, int slot); - - - -/* ******************************************************************************** */ -/* Packet buffer functions */ - - -/** - * Flush buffers associated with a particular CA slot. - * - * @param ca CA instance. - * @param slot Slot whose buffers are to be to flushed. - * - * @return 0 on success, <0 on failure. - */ -extern int dvb_ca_buf_flush_buffers(struct dvb_ca* ca, int slot); - - -/** - * This function does not talk to a CAM; it is a utility function for grabbing data from the - * connection buffers in chunks suitable for use by hardware-dependent code. - * - * Copy data to be sent to the CAM from the cache into the - * supplied buffer. This call is for lower layers to get data still to - * be sent to the CAM. The buffer is filled by the layers which receive data - * from userspace. - * - * @param ca CA instance. - * @param dest Where to put the data. - * @param len Size of destination buffer. - * @param last_fragment. This will be set to 1 if this is the last fragment of a packet, - * or 0 if there is still more data in this packet to be transmitted. - * @param slot Slot concerned. - * @param connection_id Connection concerned. - * - * @return Number of bytes copied to dest, or <0 on error. - */ -extern int dvb_ca_buf_copy_to_cam(dvb_ca* ca, u8 *dest, int len, u8* last_fragment, u8 slot, u8 connection_id); - - -/** - * This function does not talk to a CAM; it is a utility function for caching data retrieved - * from a CAM by some hardware-dependent method and storing it in the connection buffers. - * - * Copy data recieved from the CAM into the cache. This call is for lower layers - * to cache data received from the CAM. The buffer is emptied by the higher layers - * which send data to userspace. - * - * @param ca CA instance. - * @param data Buffer containing data. - * @param len Number of bytes. - * @param last_fragment 1 if this is the last fragment of a packet, or 0 if not. - * @param slot Slot the data was received from. - * @param connection_id Connection id the data was received from. - * - * @return 0 on success, or -1 if there was not enough space. - * If -1 is returned, the packet will be automatically discarded. Any further data written - * for this packet (last_fragment==0) will also be discarded until the next packet (i.e. the - * write AFTER the write with last_fragment==1). - */ -extern int dvb_ca_buf_copy_from_cam(dvb_ca* ca, u8 *data, int len, u8 last_fragment, u8 slot, u8 connection_id); - - -/* ******************************************************************************** */ -/* Initialisation/shutdown functions */ - -/** - * Initialise a new DVB CA device. - * - * @param dvb_adapter DVB adapter to attach the new CA device to. - * @param ca_dev The dvb_device_t to return. - * @param ca The dvb_ca instance. - * - * @return 0 on success, nonzero on failure - */ -extern int dvb_ca_init(dvb_adapter_t *dvb_adapter, dvb_device_t **ca_dev, struct dvb_ca* ca); - -/** - * Release a DVB CA device. - * - * @param ca_dev The dvb_device_t instance for the CA device. - * @param ca The associated dvb_ca instance. - */ -extern void dvb_ca_release(dvb_device_t *ca_dev, struct dvb_ca* ca); - - - -#endif diff --git a/linux/drivers/media/dvb/dvb-core/dvb_ca_en50221.c b/linux/drivers/media/dvb/dvb-core/dvb_ca_en50221.c new file mode 100644 index 000000000..02f40f5e0 --- /dev/null +++ b/linux/drivers/media/dvb/dvb-core/dvb_ca_en50221.c @@ -0,0 +1,1635 @@ +/* + * dvb_ca.c: generic DVB functions for EN50221 CAM interfaces + * + * Copyright (C) 2004 Andrew de Quincey + * + * Parts of this file were based on sources as follows: + * + * Copyright (C) 2003 Ralph Metzler <rjkm@metzlerbros.de> + * + * based on code: + * + * Copyright (C) 1999-2002 Ralph Metzler + * & Marcus Metzler for convergence integrated media GmbH + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + * Or, point your browser to http://www.gnu.org/copyleft/gpl.html + */ + +#include <linux/errno.h> +#include <linux/slab.h> +#include <linux/list.h> +#include <linux/module.h> +#include <linux/vmalloc.h> +#include <linux/delay.h> +#include <asm/semaphore.h> +#include <asm/atomic.h> + +#include "dvb_ca_en50221.h" +#include "dvb_functions.h" +#include "dvb_ringbuffer.h" + +static int dvb_ca_en50221_debug = 0; +#define dprintk if (dvb_ca_en50221_debug) printk + +#define INIT_TIMEOUT_SECS 5 + +#define HOST_LINK_BUF_SIZE 0x200 + +#define RX_BUFFER_SIZE 65535 + +#define MAX_RX_PACKETS_PER_ITERATION 10 + +#define CTRLIF_DATA 0 +#define CTRLIF_COMMAND 1 +#define CTRLIF_STATUS 1 +#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 IRQEN (CMDREG_FRIE|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 DVB_CA_SLOTSTATE_NONE 0 +#define DVB_CA_SLOTSTATE_UNINITIALISED 1 +#define DVB_CA_SLOTSTATE_RUNNING 2 +#define DVB_CA_SLOTSTATE_INVALID 3 +#define DVB_CA_SLOTSTATE_WAITREADY 4 +#define DVB_CA_SLOTSTATE_VALIDATE 5 +#define DVB_CA_SLOTSTATE_WAITFR 6 +#define DVB_CA_SLOTSTATE_LINKINIT 7 + + +/* Information on a CA slot */ +struct dvb_ca_slot { + + /* current state of the CAM */ + int slot_state; + + /* Number of CAMCHANGES that have occurred since last processing */ + atomic_t camchange_count; + + /* Type of last CAMCHANGE */ + int camchange_type; + + /* base address of CAM config */ + u32 config_base; + + /* value to write into Config Control register */ + u8 config_option; + + /* if 1, the CAM supports FR IRQs */ + u8 fr_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; + + /* semaphore for syncing access to slot structure */ + struct semaphore sem; + + /* buffer for incoming packets */ + struct dvb_ringbuffer rx_buffer; + + /* 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; + + /* the DVB device */ + struct dvb_device *dvbdev; + + /* Flags describing the interface (DVB_CA_FLAG_*) */ + u32 flags; + + /* number of slots supported by this CA interface */ + unsigned int slot_count; + + /* information on each slot */ + struct dvb_ca_slot* slot_info; + + /* wait queues for read() and write() operations */ + wait_queue_head_t wait_queue; + + /* PID of the monitoring thread */ + pid_t thread_pid; + + /* Wait queue used when shutting thread down */ + wait_queue_head_t thread_queue; + + /* Flag indicating when thread should exit */ + int exit:1; + + /* Flag indicating if the CA device is open */ + int open:1; + + /* Flag indicating the thread should wake up now */ + int wakeup:1; + + /* 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; +}; + +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); + + +/** + * Safely find needle in haystack. + * + * @param haystack Buffer to look in. + * @param hlen Number of bytes in haystack. + * @param needle Buffer to find. + * @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) +{ + int i; + + if (hlen < nlen) return NULL; + + for(i=0; i<= hlen - nlen; i++) { + if (!strncmp(haystack+i, needle, nlen)) return haystack+i; + } + + return NULL; +} + + + +/* ******************************************************************************** */ +/* EN50221 physical interface functions */ + + +/** + * Check CAM status. + */ +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; +} + + +/** + * Wait for flags to become set on the STATUS register on a CAM interface, + * checking for errors and timeout. + * + * @param ca CA instance. + * @param slot Slot on interface. + * @param waitfor Flags to wait for. + * @param timeout_ms Timeout in milliseconds. + * + * @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) +{ + 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; +} + + +/** + * Initialise the link layer connection to a CAM. + * + * @param ca CA instance. + * @param slot Slot id. + * + * @return 0 on success, nonzero on failure. + */ +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].fr_irq_supported = 0; + 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; +} + +/** + * Read a tuple from attribute memory. + * + * @param ca CA instance. + * @param slot Slot id. + * @param address Address to read from. Updated. + * @param tupleType Tuple id byte. Updated. + * @param tupleLength Tuple length. Updated. + * @param tuple Dest buffer for tuple (must be 256 bytes). Updated. + * + * @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) +{ + 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; +} + + +/** + * Parse attribute memory of a CAM module, extracting Config register, and checking + * it is a DVB CAM module. + * + * @param ca CA instance. + * @param slot Slot id. + * + * @return 0 on success, <0 on failure. + */ +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; + + /* does it contain an interrupt descriptor structure? */ + i = 1; + if (tuple[0] & 0x80) i++; + + /* 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; +} + + +/** + * Set CAM's configoption correctly. + * + * @param ca CA instance. + * @param slot Slot containing the CAM. + */ +static int dvb_ca_en50221_set_configoption(struct dvb_ca_private* ca, int slot) +{ + int configoption; + + 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); + + /* check it */ + configoption = ca->pub->read_attribute_mem(ca->pub, slot, ca->slot_info[slot].config_base); + if ((configoption & 0x3f) != ca->slot_info[slot].config_option) { + return -EINVAL; + } + + /* fine! */ + return 0; + +} + + +/** + * This function talks to an EN50221 CAM control interface. It reads a buffer of + * data from the CAM. The data can either be stored in a supplied buffer, or + * automatically be added to the slot's rx_buffer. + * + * @param ca CA instance. + * @param slot Slot to read from. + * @param ebuf If non-NULL, the data will be written to this buffer. If NULL, + * the data will be added into the buffering system as a normal fragment. + * @param ecount Size of ebuf. Ignored if ebuf is NULL. + * + * @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) +{ + 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 at 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); + } + status = bytes_read; + +exit: + up(&ca->slot_info[slot].sem); + return status; +} + + +/** + * This function talks to an EN50221 CAM control interface. It writes a buffer of data + * to a CAM. + * + * @param ca CA instance. + * @param slot Slot to write to. + * @param ebuf The data in this buffer is treated as a complete link-level packet to + * be written. + * @param count Size of ebuf. + * + * @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) +{ + 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 exit; + 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; + +exit: + ca->pub->write_cam_control(ca->pub, slot, CTRLIF_COMMAND, IRQEN); + +exitnowrite: + up(&ca->slot_info[slot].sem); + if (bytes_write >= 0) wake_up_interruptible(&ca->wait_queue); + return status; +} + + + +/* ******************************************************************************** */ +/* EN50221 higher level functions */ + + +/** + * A CAM has been removed => shut it down. + * + * @param ca CA instance. + * @param slot Slot to shut down. + */ +static int dvb_ca_en50221_slot_shutdown(struct dvb_ca_private* ca, int slot) +{ + int status; + + dprintk ("%s\n", __FUNCTION__); + + if ((status = down_interruptible(&ca->slot_info[slot].sem)) != 0) return status; + 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 write 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); + + /* success */ + return 0; +} + + +/** + * A CAMCHANGE IRQ has occurred. + * + * @param ca CA instance. + * @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) +{ + struct dvb_ca_private* ca = (struct dvb_ca_private*) pubca->private; + + 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; + + default: + return; + } + + ca->slot_info[slot].camchange_type = change_type; + atomic_inc(&ca->slot_info[slot].camchange_count); + dvb_ca_en50221_thread_wakeup(ca); +} + + +/** + * A CAMREADY IRQ has occurred. + * + * @param ca CA instance. + * @param slot Slot concerned. + */ +void dvb_ca_en50221_camready_irq(struct dvb_ca_en50221* pubca, int slot) +{ + struct dvb_ca_private* ca = (struct dvb_ca_private*) pubca->private; + + 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); + } +} + + +/** + * An FR or DA IRQ has occurred. + * + * @param ca CA instance. + * @param slot Slot concerned. + */ +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; + } else if (flags & STATUSREG_FR) { + // this is an else because some modules leave the FR bit + // set as well as DA during the link init sequence + dprintk("CAM supports FR IRQ\n"); + ca->slot_info[slot].fr_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); + } + if (flags & STATUSREG_FR) { + wake_up_interruptible(&ca->wait_queue); + } + break; + } +} + + + +/* ******************************************************************************** */ +/* EN50221 thread functions */ + +/** + * Wake up the DVB CA thread + * + * @param ca CA instance. + */ +static void dvb_ca_en50221_thread_wakeup(struct dvb_ca_private* ca) +{ + + dprintk ("%s\n", __FUNCTION__); + + ca->wakeup = 1; + mb(); + wake_up_interruptible(&ca->thread_queue); +} + +/** + * Used by the CA thread to determine if an early wakeup is necessary + * + * @param ca CA instance. + */ +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; +} + + +/** + * Update the delay used by the thread. + * + * @param ca CA instance. + */ +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++) { + if (!ca->open) { + delay = HZ*60; + if (!(ca->flags & DVB_CA_EN50221_FLAG_IRQ_CAMCHANGE)) delay = HZ/10; + } else { + + 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->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; +} + + + +/** + * Kernel thread which monitors CA slots for CAM changes, and performs data transfers. + */ +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; + 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; + 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; + 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; + 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; + 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; + 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; +} + + + +/* ******************************************************************************** */ +/* EN50221 IO interface functions */ + +/** + * Real ioctl implementation. + * NOTE: CA_SEND_MSG/CA_GET_MSG ioctls have userspace buffers passed to them. + * + * @param inode Inode concerned. + * @param file File concerned. + * @param cmd IOCTL command. + * @param arg Associated argument. + * + * @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) +{ + 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; +} + + +/** + * Wrapper for ioctl implementation. + * + * @param inode Inode concerned. + * @param file File concerned. + * @param cmd IOCTL command. + * @param arg Associated argument. + * + * @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) +{ + return dvb_usercopy(inode, file, cmd, arg, dvb_ca_en50221_io_do_ioctl); +} + + +/** + * Implementation of write() syscall. + * + * @param file File structure. + * @param buf Source buffer. + * @param count Size of source buffer. + * @param ppos Position in file (ignored). + * + * @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) +{ + 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; + + 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; + + while(1) { + status = dvb_ca_en50221_write_data(ca, slot, fragbuf, fraglen+2); + if (status == (fraglen+2)) break; + if (status != -EAGAIN) goto exit; + + dvb_delay(1); + } + + fragpos += fraglen; + } + status = count; + +exit: + dvb_ca_en50221_thread_wakeup(ca); + 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) +{ + 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); + +nextslot: + slot = (slot + 1) % ca->slot_count; + slot_count++; + } + + ca->next_read_slot = slot; + return found; +} + + +/** + * Implementation of read() syscall. + * + * @param file File structure. + * @param buf Destination buffer. + * @param count Size of destination buffer. + * @param ppos Position in file (ignored). + * + * @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) +{ + 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); + + if ((status = copy_to_user(buf, &slot, 1)) != 0) goto exit; + if ((status = copy_to_user(buf+1, &connection_id, 1)) != 0) goto exit; + status = pktlen; + +exit: + up(&ca->slot_info[slot].sem); + return status; +} + + +/** + * Implementation of file open syscall. + * + * @param inode Inode concerned. + * @param file File concerned. + * + * @return 0 on success, <0 on failure. + */ +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; + + dprintk ("%s\n", __FUNCTION__); + + 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) { + 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); + + return 0; +} + + +/** + * Implementation of file close syscall. + * + * @param inode Inode concerned. + * @param file File concerned. + * + * @return 0 on success, <0 on failure. + */ +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; + + dprintk ("%s\n", __FUNCTION__); + + /* 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; +} + + +/** + * Implementation of poll() syscall. + * + * @param file File concerned. + * @param wait poll wait table. + * + * @return Standard poll mask. + */ +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; + + dprintk ("%s\n", __FUNCTION__); + + if (dvb_ca_en50221_io_read_condition(ca, &result, &slot) == 1) { + up(&ca->slot_info[slot].sem); + mask |= POLLIN; + } + + /* if there is something, return now */ + if (mask) return mask; + + /* wait for something to happen */ + poll_wait(file, &ca->wait_queue, wait); + + if (dvb_ca_en50221_io_read_condition(ca, &result, &slot) == 1) { + up(&ca->slot_info[slot].sem); + mask |= POLLIN; + } + + 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, +}; + +static struct dvb_device dvbdev_ca = { + priv: 0, + users: 1, + writers: 1, + fops: &dvb_ca_fops, +}; + + +/* ******************************************************************************** */ +/* Initialisation/shutdown functions */ + + +/** + * Initialise a new DVB CA EN50221 interface device. + * + * @param dvb_adapter DVB adapter to attach the new CA device to. + * @param ca The dvb_ca instance. + * @param flags Flags describing the CA device (DVB_CA_FLAG_*). + * @param slot_count Number of slots supported. + * + * @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 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 */ +#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)) + { + /* bug in linux 2.4.x: kernel_thread() fails when the process calling + * open() is run in the debugger (fixed in kernel 2.5). I hope this + * workaround does not have any ugly side effects... + */ + int pt = current->ptrace; + current->ptrace = 0; +#endif + + ret = kernel_thread (dvb_ca_en50221_thread, ca, 0); + +#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)) + current->ptrace = pt; + } +#endif + + 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; +} + + + +/** + * Release a DVB CA EN50221 interface device. + * + * @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) +{ + 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; +} + +MODULE_PARM(dvb_ca_en50221_debug,"i"); + +MODULE_PARM_DESC(dvb_ca_en50221_debug, "enable verbose debug messages"); diff --git a/linux/drivers/media/dvb/dvb-core/dvb_ca_en50221.h b/linux/drivers/media/dvb/dvb-core/dvb_ca_en50221.h new file mode 100644 index 000000000..8458f7afd --- /dev/null +++ b/linux/drivers/media/dvb/dvb-core/dvb_ca_en50221.h @@ -0,0 +1,128 @@ +/* + * dvb_ca.h: generic DVB functions for EN50221 CA interfaces + * + * Copyright (C) 2004 Andrew de Quincey + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public License + * as published by the Free Software Foundation; either version 2.1 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + */ + +#ifndef _DVB_CA_EN50221_H_ +#define _DVB_CA_EN50221_H_ + +#include <linux/list.h> +#include <linux/dvb/ca.h> + +#include "dvbdev.h" + +#define DVB_CA_EN50221_POLL_CAM_PRESENT 1 +#define DVB_CA_EN50221_POLL_CAM_CHANGED 2 +#define DVB_CA_EN50221_POLL_CAM_READY 4 + +#define DVB_CA_EN50221_FLAG_IRQ_CAMCHANGE 1 +#define DVB_CA_EN50221_FLAG_IRQ_FR 2 +#define DVB_CA_EN50221_FLAG_IRQ_DA 4 + +#define DVB_CA_EN50221_CAMCHANGE_REMOVED 0 +#define DVB_CA_EN50221_CAMCHANGE_INSERTED 1 + + + +/* Structure describing a CA interface */ +struct dvb_ca_en50221 { + + /* functions for accessing attribute memory on the CAM */ + int (*read_attribute_mem)(struct dvb_ca_en50221* ca, int slot, int address); + int (*write_attribute_mem)(struct dvb_ca_en50221* ca, int slot, int address, u8 value); + + /* functions for accessing the control interface on the CAM */ + int (*read_cam_control)(struct dvb_ca_en50221* ca, int slot, u8 address); + int (*write_cam_control)(struct dvb_ca_en50221* ca, int slot, u8 address, u8 value); + + /* Functions for controlling slots */ + int (*slot_reset)(struct dvb_ca_en50221* ca, int slot); + int (*slot_shutdown)(struct dvb_ca_en50221* ca, int slot); + int (*slot_ts_enable)(struct dvb_ca_en50221* ca, int slot); + + /* + * Poll slot status. + * Only necessary if DVB_CA_FLAG_EN50221_IRQ_CAMCHANGE is not set + */ + int (*poll_slot_status)(struct dvb_ca_en50221* ca, int slot); + + /* private data, used by caller */ + void* data; + + /* Opaque data used by the dvb_ca core. Do not modify! */ + void* private; +}; + + + + +/* ******************************************************************************** */ +/* Functions for reporting IRQ events */ + +/** + * A CAMCHANGE IRQ has occurred. + * + * @param ca CA instance. + * @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); + +/** + * A CAMREADY IRQ has occurred. + * + * @param ca CA instance. + * @param slot Slot concerned. + */ +void dvb_ca_en50221_camready_irq(struct dvb_ca_en50221* pubca, int slot); + +/** + * An FR or a DA IRQ has occurred. + * + * @param ca CA instance. + * @param slot Slot concerned. + */ +void dvb_ca_en50221_frda_irq(struct dvb_ca_en50221* ca, int slot); + + + +/* ******************************************************************************** */ +/* Initialisation/shutdown functions */ + +/** + * Initialise a new DVB CA device. + * + * @param dvb_adapter DVB adapter to attach the new CA device to. + * @param ca The dvb_ca instance. + * @param flags Flags describing the CA device (DVB_CA_EN50221_FLAG_*). + * @param slot_count Number of slots supported. + * + * @return 0 on success, nonzero on failure + */ +extern int dvb_ca_en50221_init(struct dvb_adapter *dvb_adapter, struct dvb_ca_en50221* ca, int flags, int slot_count); + +/** + * Release a DVB CA device. + * + * @param ca The associated dvb_ca instance. + */ +extern void dvb_ca_en50221_release(struct dvb_ca_en50221* ca); + + + +#endif diff --git a/linux/drivers/media/dvb/dvb-core/dvb_ksyms.c b/linux/drivers/media/dvb/dvb-core/dvb_ksyms.c index 6b471c44c..558b3f41e 100644 --- a/linux/drivers/media/dvb/dvb-core/dvb_ksyms.c +++ b/linux/drivers/media/dvb/dvb-core/dvb_ksyms.c @@ -10,6 +10,7 @@ #include "dvb_frontend.h" #include "dvb_net.h" #include "dvb_filter.h" +#include "dvb_ca_en50221.h" EXPORT_SYMBOL(dvb_dmxdev_init); EXPORT_SYMBOL(dvb_dmxdev_release); @@ -49,3 +50,8 @@ EXPORT_SYMBOL(dvb_filter_pes2ts_init); EXPORT_SYMBOL(dvb_filter_pes2ts); EXPORT_SYMBOL(dvb_filter_get_ac3info); +EXPORT_SYMBOL(dvb_ca_en50221_init); +EXPORT_SYMBOL(dvb_ca_en50221_release); +EXPORT_SYMBOL(dvb_ca_en50221_frda_irq); +EXPORT_SYMBOL(dvb_ca_en50221_camchange_irq); +EXPORT_SYMBOL(dvb_ca_en50221_camready_irq); diff --git a/linux/drivers/media/dvb/dvb-core/dvb_ringbuffer.c b/linux/drivers/media/dvb/dvb-core/dvb_ringbuffer.c index 1db637351..1ab5166fc 100644 --- a/linux/drivers/media/dvb/dvb-core/dvb_ringbuffer.c +++ b/linux/drivers/media/dvb/dvb-core/dvb_ringbuffer.c @@ -2,10 +2,11 @@ * * dvb_ringbuffer.c: ring buffer implementation for the dvb driver * - * Copyright (C) 2003 Oliver Endriss - * - * based on code originally found in av7110.c: - * Copyright (C) 1999-2002 Ralph Metzler + * Copyright (C) 2003 Oliver Endriss + * Copyright (C) 2004 Andrew de Quincey + * + * based on code originally found in av7110.c & dvb_ci.c: + * Copyright (C) 1999-2003 Ralph Metzler * & Marcus Metzler for convergence integrated media GmbH * * This program is free software; you can redistribute it and/or @@ -35,6 +36,8 @@ #include "dvb_ringbuffer.h" +#define PKT_READY 0 +#define PKT_DISPOSED 1 void dvb_ringbuffer_init(struct dvb_ringbuffer *rbuf, void *data, size_t len) @@ -60,7 +63,7 @@ int dvb_ringbuffer_empty(struct dvb_ringbuffer *rbuf) ssize_t dvb_ringbuffer_free(struct dvb_ringbuffer *rbuf) { ssize_t free; - + free = rbuf->pread - rbuf->pwrite; if (free <= 0) free += rbuf->size; @@ -72,7 +75,7 @@ ssize_t dvb_ringbuffer_free(struct dvb_ringbuffer *rbuf) ssize_t dvb_ringbuffer_avail(struct dvb_ringbuffer *rbuf) { ssize_t avail; - + avail = rbuf->pwrite - rbuf->pread; if (avail < 0) avail += rbuf->size; @@ -135,31 +138,127 @@ ssize_t dvb_ringbuffer_write(struct dvb_ringbuffer *rbuf, const u8 *buf, { size_t todo = len; size_t split; - + split = (rbuf->pwrite + len > rbuf->size) ? rbuf->size - rbuf->pwrite : 0; if (split > 0) { - if (!usermem) + if (!usermem) memcpy(rbuf->data+rbuf->pwrite, buf, split); else - if (copy_from_user(rbuf->data+rbuf->pwrite, + if (copy_from_user(rbuf->data+rbuf->pwrite, buf, split)) return -EFAULT; buf += split; todo -= split; rbuf->pwrite = 0; } - if (!usermem) + if (!usermem) memcpy(rbuf->data+rbuf->pwrite, buf, todo); else - if (copy_from_user(rbuf->data+rbuf->pwrite, buf, todo)) + if (copy_from_user(rbuf->data+rbuf->pwrite, buf, todo)) return -EFAULT; rbuf->pwrite = (rbuf->pwrite + todo) % rbuf->size; - return len; + return len; +} + +ssize_t dvb_ringbuffer_pkt_write(struct dvb_ringbuffer *rbuf, u8* buf, size_t len, int usermem) +{ + int status; + ssize_t oldpwrite = rbuf->pwrite; + + DVB_RINGBUFFER_WRITE_BYTE(rbuf, len >> 8); + DVB_RINGBUFFER_WRITE_BYTE(rbuf, len & 0xff); + DVB_RINGBUFFER_WRITE_BYTE(rbuf, PKT_READY); + status = dvb_ringbuffer_write(rbuf, buf, len, usermem); + + if (status < 0) rbuf->pwrite = oldpwrite; + return status; } +ssize_t dvb_ringbuffer_pkt_read(struct dvb_ringbuffer *rbuf, size_t idx, + int offset, u8* buf, size_t len, int usermem) +{ + size_t todo; + size_t split; + size_t pktlen; + + pktlen = rbuf->data[idx] << 8; + pktlen |= rbuf->data[(idx + 1) % rbuf->size]; + if (offset > pktlen) return -EINVAL; + if ((offset + len) > pktlen) len = pktlen - offset; + + idx = (idx + DVB_RINGBUFFER_PKTHDRSIZE + offset) % rbuf->size; + todo = len; + split = ((idx + len) > rbuf->size) ? rbuf->size - idx : 0; + if (split > 0) { + if (!usermem) + memcpy(buf, rbuf->data+idx, split); + else + if (copy_to_user(buf, rbuf->data+idx, split)) + return -EFAULT; + buf += split; + todo -= split; + idx = 0; + } + if (!usermem) + memcpy(buf, rbuf->data+idx, todo); + else + if (copy_to_user(buf, rbuf->data+idx, todo)) + return -EFAULT; + + return len; +} + +void dvb_ringbuffer_pkt_dispose(struct dvb_ringbuffer *rbuf, size_t idx) +{ + size_t pktlen; + + rbuf->data[(idx + 2) % rbuf->size] = PKT_DISPOSED; + + // clean up disposed packets + while(dvb_ringbuffer_avail(rbuf) > DVB_RINGBUFFER_PKTHDRSIZE) { + if (DVB_RINGBUFFER_PEEK(rbuf, 2) == PKT_DISPOSED) { + pktlen = DVB_RINGBUFFER_PEEK(rbuf, 0) << 8; + pktlen |= DVB_RINGBUFFER_PEEK(rbuf, 1); + DVB_RINGBUFFER_SKIP(rbuf, pktlen + DVB_RINGBUFFER_PKTHDRSIZE); + } else { + // first packet is not disposed, so we stop cleaning now + break; + } + } +} + +ssize_t dvb_ringbuffer_pkt_next(struct dvb_ringbuffer *rbuf, size_t idx, size_t* pktlen) +{ + int consumed; + int curpktlen; + int curpktstatus; + + if (idx == -1) idx = rbuf->pread; + consumed = (idx - rbuf->pread) % rbuf->size; + + while((dvb_ringbuffer_avail(rbuf) - consumed) > DVB_RINGBUFFER_PKTHDRSIZE) { + + curpktlen = rbuf->data[idx] << 8; + curpktlen |= rbuf->data[(idx + 1) % rbuf->size]; + curpktstatus = rbuf->data[(idx + 2) % rbuf->size]; + + if (curpktstatus == PKT_READY) { + *pktlen = curpktlen; + return idx; + } + + consumed += curpktlen + DVB_RINGBUFFER_PKTHDRSIZE; + idx = (idx + curpktlen + DVB_RINGBUFFER_PKTHDRSIZE) % rbuf->size; + } + + // no packets available + return -1; +} + + EXPORT_SYMBOL(dvb_ringbuffer_init); EXPORT_SYMBOL(dvb_ringbuffer_empty); @@ -169,3 +268,7 @@ EXPORT_SYMBOL(dvb_ringbuffer_flush); EXPORT_SYMBOL(dvb_ringbuffer_flush_spinlock_wakeup); EXPORT_SYMBOL(dvb_ringbuffer_read); EXPORT_SYMBOL(dvb_ringbuffer_write); +EXPORT_SYMBOL(dvb_ringbuffer_pkt_write); +EXPORT_SYMBOL(dvb_ringbuffer_pkt_read); +EXPORT_SYMBOL(dvb_ringbuffer_pkt_dispose); +EXPORT_SYMBOL(dvb_ringbuffer_pkt_next); diff --git a/linux/drivers/media/dvb/dvb-core/dvb_ringbuffer.h b/linux/drivers/media/dvb/dvb-core/dvb_ringbuffer.h index 50cd1a6d9..c72f6cb82 100644 --- a/linux/drivers/media/dvb/dvb-core/dvb_ringbuffer.h +++ b/linux/drivers/media/dvb/dvb-core/dvb_ringbuffer.h @@ -2,10 +2,11 @@ * * dvb_ringbuffer.h: ring buffer implementation for the dvb driver * - * Copyright (C) 2003 Oliver Endriss - * - * based on code originally found in av7110.c: - * Copyright (C) 1999-2002 Ralph Metzler & Marcus Metzler + * Copyright (C) 2003 Oliver Endriss + * Copyright (C) 2004 Andrew de Quincey + * + * based on code originally found in av7110.c & dvb_ci.c: + * Copyright (C) 1999-2003 Ralph Metzler & Marcus Metzler * for convergence integrated media GmbH * * This program is free software; you can redistribute it and/or @@ -39,6 +40,8 @@ struct dvb_ringbuffer { spinlock_t lock; }; +#define DVB_RINGBUFFER_PKTHDRSIZE 3 + /* ** Notes: @@ -49,7 +52,7 @@ struct dvb_ringbuffer { ** ** *** write <buflen> bytes *** ** free = dvb_ringbuffer_free(rbuf); -** if (free >= buflen) +** if (free >= buflen) ** count = dvb_ringbuffer_write(rbuf, buffer, buflen, 0); ** else ** ... @@ -61,7 +64,7 @@ struct dvb_ringbuffer { ** else ** ... ** -** (2) If there is exactly one reader and one writer, there is no need +** (2) If there is exactly one reader and one writer, there is no need ** to lock read or write operations. ** Two or more readers must be locked against each other. ** Flushing the buffer counts as a read operation. @@ -96,13 +99,13 @@ extern void dvb_ringbuffer_flush_spinlock_wakeup(struct dvb_ringbuffer *rbuf); /* advance read ptr by <num> bytes */ #define DVB_RINGBUFFER_SKIP(rbuf,num) \ (rbuf)->pread=((rbuf)->pread+(num))%(rbuf)->size - + /* -** read <len> bytes from ring buffer into <buf> +** read <len> bytes from ring buffer into <buf> ** <usermem> specifies whether <buf> resides in user space ** returns number of bytes transferred or -EFAULT */ -extern ssize_t dvb_ringbuffer_read(struct dvb_ringbuffer *rbuf, u8 *buf, +extern ssize_t dvb_ringbuffer_read(struct dvb_ringbuffer *rbuf, u8 *buf, size_t len, int usermem); @@ -120,4 +123,52 @@ extern ssize_t dvb_ringbuffer_read(struct dvb_ringbuffer *rbuf, u8 *buf, extern ssize_t dvb_ringbuffer_write(struct dvb_ringbuffer *rbuf, const u8 *buf, size_t len, int usermem); + +/** + * Write a packet into the ringbuffer. + * + * <rbuf> Ringbuffer to write to. + * <buf> Buffer to write. + * <len> Length of buffer (currently limited to 65535 bytes max). + * <usermem> Set to 1 if <buf> is in userspace. + * returns Number of bytes written, or -EFAULT, -ENOMEM, -EVINAL. + */ +extern ssize_t dvb_ringbuffer_pkt_write(struct dvb_ringbuffer *rbuf, u8* buf, + size_t len, int usermem); + +/** + * Read from a packet in the ringbuffer. Note: unlike dvb_ringbuffer_read(), this + * does NOT update the read pointer in the ringbuffer. You must use + * dvb_ringbuffer_pkt_dispose() to mark a packet as no longer required. + * + * <rbuf> Ringbuffer concerned. + * <idx> Packet index as returned by dvb_ringbuffer_pkt_next(). + * <offset> Offset into packet to read from. + * <buf> Destination buffer for data. + * <len> Size of destination buffer. + * <usermem> Set to 1 if <buf> is in userspace. + * returns Number of bytes read, or -EFAULT. + */ +extern ssize_t dvb_ringbuffer_pkt_read(struct dvb_ringbuffer *rbuf, size_t idx, + int offset, u8* buf, size_t len, int usermem); + +/** + * Dispose of a packet in the ring buffer. + * + * <rbuf> Ring buffer concerned. + * <idx> Packet index as returned by dvb_ringbuffer_pkt_next(). + */ +extern void dvb_ringbuffer_pkt_dispose(struct dvb_ringbuffer *rbuf, size_t idx); + +/** + * Get the index of the next packet in a ringbuffer. + * + * <rbuf> Ringbuffer concerned. + * <idx> Previous packet index, or -1 to return the first packet index. + * <pktlen> On success, will be updated to contain the length of the packet in bytes. + * returns Packet index (if >=0), or -1 if no packets available. + */ +extern ssize_t dvb_ringbuffer_pkt_next(struct dvb_ringbuffer *rbuf, size_t idx, size_t* pktlen); + + #endif /* _DVB_RINGBUFFER_H_ */ diff --git a/linux/drivers/media/dvb/ttpci/budget-ci.c b/linux/drivers/media/dvb/ttpci/budget-ci.c index db16c44e1..955ae3ffb 100644 --- a/linux/drivers/media/dvb/ttpci/budget-ci.c +++ b/linux/drivers/media/dvb/ttpci/budget-ci.c @@ -1,30 +1,30 @@ /* - * budget-ci.c: driver for the SAA7146 based Budget DVB cards + * budget-ci.c: driver for the SAA7146 based Budget DVB cards * - * Compiled from various sources by Michael Hunold <michael@mihu.de> + * Compiled from various sources by Michael Hunold <michael@mihu.de> * * msp430 IR support contributed by Jack Thomasson <jkt@Helius.COM> * partially based on the Siemens DVB driver by Ralph+Marcus Metzler * * CI interface support (c) 2004 Andrew de Quincey <adq_dvb@lidskialf.net> - * + * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. - * + * * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. - * + * * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * Or, point your browser to http://www.gnu.org/copyleft/gpl.html - * + * * * the project's page is at http://www.linuxtv.org/dvb/ */ @@ -39,81 +39,96 @@ #include <linux/spinlock.h> #include "dvb_functions.h" +#include "dvb_ca_en50221.h" #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)) #include "input_fake.h" #endif -#define DEBIADDR_IR 0x1234 -#define DEBIADDR_CICONTROL 0x0000 -#define DEBIADDR_CIVERSION 0x4000 -#define DEBIADDR_CIIRQCONTROL 0x4000 +#define DEBIADDR_IR 0x1234 +#define DEBIADDR_CICONTROL 0x0000 +#define DEBIADDR_CIVERSION 0x4000 +#define DEBIADDR_IO 0x1000 +#define DEBIADDR_ATTR 0x3000 + +#define CICONTROL_RESET 0x01 +#define CICONTROL_ENABLETS 0x02 +#define CICONTROL_CAMDETECT 0x08 +#define DEBICICTL 0x00420000 +#define DEBICICAM 0x02420000 +#define SLOTSTATUS_NONE 1 +#define SLOTSTATUS_PRESENT 2 +#define SLOTSTATUS_RESET 4 +#define SLOTSTATUS_READY 8 +#define SLOTSTATUS_OCCUPIED (SLOTSTATUS_PRESENT|SLOTSTATUS_RESET|SLOTSTATUS_READY) struct budget_ci { struct budget budget; struct input_dev input_dev; struct tasklet_struct msp430_irq_tasklet; - spinlock_t debilock; - int ci_present; + struct tasklet_struct ciintf_irq_tasklet; + spinlock_t debilock; + int slot_status; + struct dvb_ca_en50221 ca; char ir_dev_name[50]; }; static u32 budget_debiread (struct budget_ci* budget_ci, u32 config, int addr, int count) { struct saa7146_dev *saa = budget_ci->budget.dev; - u32 result = 0; - + u32 result = 0; + if (count > 4 || count <= 0) return 0; - spin_lock(&budget_ci->debilock); - + spin_lock(&budget_ci->debilock); + if (saa7146_wait_for_debi_done(saa) < 0) { - spin_unlock(&budget_ci->debilock); + spin_unlock(&budget_ci->debilock); return 0; } - + saa7146_write (saa, DEBI_COMMAND, (count << 17) | 0x10000 | (addr & 0xffff)); saa7146_write(saa, DEBI_CONFIG, config); - saa7146_write(saa, DEBI_PAGE, 0); + saa7146_write(saa, DEBI_PAGE, 0); saa7146_write(saa, MC2, (2 << 16) | 2); - + saa7146_wait_for_debi_done(saa); result = saa7146_read(saa, 0x88); result &= (0xffffffffUL >> ((4 - count) * 8)); - spin_unlock(&budget_ci->debilock); + spin_unlock(&budget_ci->debilock); return result; } static u8 budget_debiwrite (struct budget_ci* budget_ci, u32 config, int addr, int count, u32 value) { struct saa7146_dev *saa = budget_ci->budget.dev; - + if (count > 4 || count <= 0) return 0; - spin_lock(&budget_ci->debilock); - + spin_lock(&budget_ci->debilock); + if (saa7146_wait_for_debi_done(saa) < 0) { - spin_unlock(&budget_ci->debilock); + spin_unlock(&budget_ci->debilock); return 0; } saa7146_write (saa, DEBI_COMMAND, (count << 17) | 0x00000 | (addr & 0xffff)); saa7146_write(saa, DEBI_CONFIG, config); - saa7146_write(saa, DEBI_PAGE, 0); + saa7146_write(saa, DEBI_PAGE, 0); saa7146_write(saa, DEBI_AD, value); saa7146_write(saa, MC2, (2 << 16) | 2); - + saa7146_wait_for_debi_done(saa); - - spin_unlock(&budget_ci->debilock); + + spin_unlock(&budget_ci->debilock); return 0; } @@ -123,52 +138,52 @@ static u8 budget_debiwrite (struct budget_ci* budget_ci, u32 config, int addr, i Hauppauge (from NOVA-CI-s box product) i've taken a "middle of the road" approach and note the differences */ -static u16 key_map[64] = { +static u16 key_map[64] = { /* 0x0X */ KEY_0, KEY_1, KEY_2, KEY_3, KEY_4, KEY_5, KEY_6, KEY_7, KEY_8, KEY_9, KEY_ENTER, KEY_RED, - KEY_POWER, /* RADIO on Hauppauge */ + KEY_POWER, /* RADIO on Hauppauge */ KEY_MUTE, 0, - KEY_A, /* TV on Hauppauge */ + KEY_A, /* TV on Hauppauge */ /* 0x1X */ KEY_VOLUMEUP, KEY_VOLUMEDOWN, 0, 0, KEY_B, 0, 0, 0, 0, 0, 0, 0, KEY_UP, KEY_DOWN, - KEY_OPTION, /* RESERVED on Hauppauge */ + KEY_OPTION, /* RESERVED on Hauppauge */ KEY_BREAK, /* 0x2X */ KEY_CHANNELUP, KEY_CHANNELDOWN, - KEY_PREVIOUS, /* Prev. Ch on Zenith, SOURCE on Hauppauge */ + KEY_PREVIOUS, /* Prev. Ch on Zenith, SOURCE on Hauppauge */ 0, KEY_RESTART, KEY_OK, - KEY_CYCLEWINDOWS, /* MINIMIZE on Hauppauge */ + KEY_CYCLEWINDOWS, /* MINIMIZE on Hauppauge */ 0, - KEY_ENTER, /* VCR mode on Zenith */ + KEY_ENTER, /* VCR mode on Zenith */ KEY_PAUSE, 0, KEY_RIGHT, KEY_LEFT, 0, - KEY_MENU, /* FULL SCREEN on Hauppauge */ + KEY_MENU, /* FULL SCREEN on Hauppauge */ 0, /* 0x3X */ KEY_SLOW, - KEY_PREVIOUS, /* VCR mode on Zenith */ + KEY_PREVIOUS, /* VCR mode on Zenith */ KEY_REWIND, 0, KEY_FASTFORWARD, KEY_PLAY, KEY_STOP, KEY_RECORD, - KEY_TUNER, /* TV/VCR on Zenith */ + KEY_TUNER, /* TV/VCR on Zenith */ 0, KEY_C, 0, KEY_EXIT, KEY_POWER2, - KEY_TUNER, /* VCR mode on Zenith */ + KEY_TUNER, /* VCR mode on Zenith */ 0, }; @@ -185,7 +200,7 @@ static void msp430_ir_debounce (unsigned long data) dev->rep[0] = 0; dev->timer.expires = jiffies + HZ * 350 / 1000; add_timer(&dev->timer); - input_event(dev, EV_KEY, key_map[dev->repeat_key], 2); /* REPEAT */ + input_event(dev, EV_KEY, key_map[dev->repeat_key], 2); /* REPEAT */ } @@ -197,22 +212,22 @@ static void msp430_ir_interrupt (unsigned long data) unsigned int code = budget_debiread(budget_ci, DEBINOSWAP, DEBIADDR_IR, 2) >> 8; if (code & 0x40) { - code &= 0x3f; - - if (timer_pending(&dev->timer)) { - if (code == dev->repeat_key) { - ++dev->rep[0]; - return; - } - del_timer(&dev->timer); - input_event(dev, EV_KEY, key_map[dev->repeat_key], !!0); + code &= 0x3f; + + if (timer_pending(&dev->timer)) { + if (code == dev->repeat_key) { + ++dev->rep[0]; + return; + } + del_timer(&dev->timer); + input_event(dev, EV_KEY, key_map[dev->repeat_key], !!0); } if (!key_map[code]) { - printk ("DVB (%s): no key for %02x!\n", + printk ("DVB (%s): no key for %02x!\n", __FUNCTION__, code); - return; - } + return; + } /* initialize debounce and repeat */ dev->repeat_key = code; @@ -221,7 +236,7 @@ static void msp430_ir_interrupt (unsigned long data) /* 350 milliseconds */ dev->timer.expires = jiffies + HZ * 350 / 1000; /* MAKE */ - input_event(dev, EV_KEY, key_map[code], !0); + input_event(dev, EV_KEY, key_map[code], !0); add_timer(&dev->timer); } } @@ -249,7 +264,7 @@ static int msp430_ir_init (struct budget_ci *budget_ci) saa7146_write(saa, IER, saa7146_read(saa, IER) | MASK_06); - saa7146_setgpio(saa, 3, SAA7146_GPIO_IRQHI); + saa7146_setgpio(saa, 3, SAA7146_GPIO_IRQHI); return 0; } @@ -269,73 +284,215 @@ static void msp430_ir_deinit (struct budget_ci *budget_ci) input_unregister_device(dev); } +static int ciintf_read_attribute_mem(struct dvb_ca_en50221* ca, int slot, int address) { + struct budget_ci* budget_ci = (struct budget_ci*) ca->data; + + if (slot != 0) return -EINVAL; + + return budget_debiread(budget_ci, DEBICICAM, DEBIADDR_ATTR | (address & 0xfff), 1); +} + +static int ciintf_write_attribute_mem(struct dvb_ca_en50221* ca, int slot, int address, u8 value) { + struct budget_ci* budget_ci = (struct budget_ci*) ca->data; + + if (slot != 0) return -EINVAL; + + return budget_debiwrite(budget_ci, DEBICICAM, DEBIADDR_ATTR | (address & 0xfff), 1, value); +} + +static int ciintf_read_cam_control(struct dvb_ca_en50221* ca, int slot, u8 address) { + struct budget_ci* budget_ci = (struct budget_ci*) ca->data; + + if (slot != 0) return -EINVAL; + + return budget_debiread(budget_ci, DEBICICAM, DEBIADDR_IO | (address & 3), 1); +} + +static int ciintf_write_cam_control(struct dvb_ca_en50221* ca, int slot, u8 address, u8 value) { + struct budget_ci* budget_ci = (struct budget_ci*) ca->data; + + if (slot != 0) return -EINVAL; + + return budget_debiwrite(budget_ci, DEBICICAM, DEBIADDR_IO | (address & 3), 1, value); +} + +static int ciintf_slot_reset(struct dvb_ca_en50221* ca, int slot) { + struct budget_ci* budget_ci = (struct budget_ci*) ca->data; + struct saa7146_dev *saa = budget_ci->budget.dev; + + if (slot != 0) return -EINVAL; + + // trigger on RISING edge during reset so we know when READY is re-asserted + saa7146_setgpio(saa, 0, SAA7146_GPIO_IRQHI); + budget_ci->slot_status = SLOTSTATUS_RESET; + budget_debiwrite(budget_ci, DEBICICTL, DEBIADDR_CICONTROL, 1, 0); + dvb_delay(1); + budget_debiwrite(budget_ci, DEBICICTL, DEBIADDR_CICONTROL, 1, CICONTROL_RESET); + + return 0; +} + +static int ciintf_slot_shutdown(struct dvb_ca_en50221* ca, int slot) { + if (slot != 0) return -EINVAL; + + // no implementation necessary + return 0; +} + +static int ciintf_slot_ts_enable(struct dvb_ca_en50221* ca, int slot) { + struct budget_ci* budget_ci = (struct budget_ci*) ca->data; + int tmp; + + if (slot != 0) return -EINVAL; + + tmp = budget_debiread(budget_ci, DEBICICTL, DEBIADDR_CICONTROL, 1); + budget_debiwrite(budget_ci, DEBICICTL, DEBIADDR_CICONTROL, 1, tmp | CICONTROL_ENABLETS); + return 0; +} + + +static void ciintf_interrupt (unsigned long data) +{ + struct budget_ci *budget_ci = (struct budget_ci*) data; + struct saa7146_dev *saa = budget_ci->budget.dev; + unsigned int flags; + + // ensure we don't get spurious IRQs during initialisation + if (!budget_ci->budget.ci_present) return; + + flags = budget_debiread(budget_ci, DEBICICTL, DEBIADDR_CICONTROL, 1); + + // always set the GPIO mode back to "normal", in case the card is + // yanked at an inopportune moment + saa7146_setgpio(saa, 0, SAA7146_GPIO_IRQLO); + + if (flags & CICONTROL_CAMDETECT) { + + if (budget_ci->slot_status & SLOTSTATUS_NONE) { + // CAM insertion IRQ + budget_ci->slot_status = SLOTSTATUS_PRESENT; + dvb_ca_en50221_camchange_irq(&budget_ci->ca, 0, DVB_CA_EN50221_CAMCHANGE_INSERTED); + + } else if (budget_ci->slot_status & SLOTSTATUS_RESET) { + // CAM ready (reset completed) + budget_ci->slot_status = SLOTSTATUS_READY; + dvb_ca_en50221_camready_irq(&budget_ci->ca, 0); + + } else if (budget_ci->slot_status & SLOTSTATUS_READY) { + // FR/DA IRQ + dvb_ca_en50221_frda_irq(&budget_ci->ca, 0); + } + } else { + if (budget_ci->slot_status & SLOTSTATUS_OCCUPIED) { + budget_ci->slot_status = SLOTSTATUS_NONE; + dvb_ca_en50221_camchange_irq(&budget_ci->ca, 0, DVB_CA_EN50221_CAMCHANGE_REMOVED); + } + } +} + static int ciintf_init(struct budget_ci* budget_ci) { struct saa7146_dev *saa = budget_ci->budget.dev; + int flags; + int result; + + memset(&budget_ci->ca, 0, sizeof(struct dvb_ca_en50221)); + + // enable DEBI pins + saa7146_write(saa, MC1, saa7146_read(saa, MC1) | (0x800 << 16) | 0x800); + + // test if it is there + if ((budget_debiread(budget_ci, DEBICICTL, DEBIADDR_CIVERSION, 1) & 0xa0) != 0xa0) { + result = -ENODEV; + goto error; + } - // enable DEBI pins - saa7146_write(saa, MC1, saa7146_read(saa, MC1) | (0x800 << 16) | 0x800); - - // test if it is there - if ((budget_debiread(budget_ci, DEBICICTL, DEBIADDR_CIVERSION, 1) & 0xa0) != 0xa0) { - saa7146_write(saa, MC1, saa7146_read(saa, MC1) | (0x800 << 16)); - return -ENODEV; + // determine whether a CAM is present or not + flags = budget_debiread(budget_ci, DEBICICTL, DEBIADDR_CICONTROL, 1); + budget_ci->slot_status = SLOTSTATUS_NONE; + if (flags & CICONTROL_CAMDETECT) budget_ci->slot_status = SLOTSTATUS_PRESENT; + + + // register CI interface + budget_ci->ca.read_attribute_mem = ciintf_read_attribute_mem; + budget_ci->ca.write_attribute_mem = ciintf_write_attribute_mem; + budget_ci->ca.read_cam_control = ciintf_read_cam_control; + budget_ci->ca.write_cam_control = ciintf_write_cam_control; + budget_ci->ca.slot_reset = ciintf_slot_reset; + budget_ci->ca.slot_shutdown = ciintf_slot_shutdown; + budget_ci->ca.slot_ts_enable = ciintf_slot_ts_enable; + budget_ci->ca.data = budget_ci; + if ((result = dvb_ca_en50221_init(budget_ci->budget.dvb_adapter, + &budget_ci->ca, + DVB_CA_EN50221_FLAG_IRQ_CAMCHANGE | + DVB_CA_EN50221_FLAG_IRQ_FR | + DVB_CA_EN50221_FLAG_IRQ_DA, + 1)) != 0) { + printk("budget_ci: CI interface detected, but initialisation failed.\n"); + goto error; } - // reset CI interface - budget_debiwrite(budget_ci, DEBICICTL, DEBIADDR_CICONTROL, 1, 0); - dvb_delay(1); - budget_debiwrite(budget_ci, DEBICICTL, DEBIADDR_CICONTROL, 1, 1); + // Setup CI slot IRQ + tasklet_init (&budget_ci->ciintf_irq_tasklet, ciintf_interrupt, (unsigned long) budget_ci); + saa7146_setgpio(saa, 0, SAA7146_GPIO_IRQLO); + saa7146_write(saa, IER, saa7146_read(saa, IER) | MASK_03); + budget_debiwrite(budget_ci, DEBICICTL, DEBIADDR_CICONTROL, 1, CICONTROL_RESET); - // clear any CI interrupt status - budget_debiwrite(budget_ci, DEBICICTL, DEBIADDR_CIIRQCONTROL, 1, 0xC0); + // success! + printk("budget_ci: CI interface initialised\n"); + budget_ci->budget.ci_present = 1; - // FIXME: register CI slot + // route TS data out to CI interface + saa7146_setgpio(saa, 1, SAA7146_GPIO_OUTHI); - // Setup CI slot IRQ - saa7146_setgpio(saa, 0, SAA7146_GPIO_IRQLO); - saa7146_write(saa, IER, saa7146_read(saa, IER) | MASK_03); - budget_debiwrite(budget_ci, DEBICICTL, DEBIADDR_CICONTROL, 1, 0xc1); + // forge a fake CI IRQ so the CAM state is setup correctly + flags = DVB_CA_EN50221_CAMCHANGE_REMOVED; + if (budget_ci->slot_status != SLOTSTATUS_NONE) flags = DVB_CA_EN50221_CAMCHANGE_INSERTED; + dvb_ca_en50221_camchange_irq(&budget_ci->ca, 0, flags); - // FIXME: route TS data out to CI interface -// saa7146_setgpio(saa, 1, SAA7146_GPIO_OUTHI); + return 0; - // success! - printk("budget_ci: CI interface detected\n"); - budget_ci->ci_present = 1; - return 0; +error: + saa7146_write(saa, MC1, saa7146_read(saa, MC1) | (0x800 << 16)); + return result; } -static void ciintf_deinit(struct budget_ci* budget_ci) +static void ciintf_deinit(struct budget_ci* budget_ci) { struct saa7146_dev *saa = budget_ci->budget.dev; - // disable CI interrupts - budget_debiwrite(budget_ci, DEBICICTL, DEBIADDR_CICONTROL, 1, 0x1); - saa7146_write(saa, IER, saa7146_read(saa, IER) & ~MASK_03); + // disable CI interrupts + saa7146_write(saa, IER, saa7146_read(saa, IER) & ~MASK_03); saa7146_setgpio(saa, 0, SAA7146_GPIO_INPUT); + tasklet_kill(&budget_ci->ciintf_irq_tasklet); + budget_debiwrite(budget_ci, DEBICICTL, DEBIADDR_CICONTROL, 1, 0); + dvb_delay(1); + budget_debiwrite(budget_ci, DEBICICTL, DEBIADDR_CICONTROL, 1, CICONTROL_RESET); - // FIXME: disable TS data stream to CI interface - saa7146_setgpio(saa, 1, SAA7146_GPIO_INPUT); + // disable TS data stream to CI interface + saa7146_setgpio(saa, 1, SAA7146_GPIO_INPUT); - // disable DEBI pins again - saa7146_write(saa, MC1, saa7146_read(saa, MC1) | (0x800 << 16)); + // release the CA device + dvb_ca_en50221_release(&budget_ci->ca); + + // disable DEBI pins + saa7146_write(saa, MC1, saa7146_read(saa, MC1) | (0x800 << 16)); } static void budget_ci_irq (struct saa7146_dev *dev, u32 *isr) { - struct budget_ci *budget_ci = (struct budget_ci*) dev->ext_priv; + struct budget_ci *budget_ci = (struct budget_ci*) dev->ext_priv; - DEB_EE(("dev: %p, budget_ci: %p\n", dev, budget_ci)); + DEB_EE(("dev: %p, budget_ci: %p\n", dev, budget_ci)); - if (*isr & MASK_06) - tasklet_schedule (&budget_ci->msp430_irq_tasklet); + if (*isr & MASK_06) + tasklet_schedule (&budget_ci->msp430_irq_tasklet); - if (*isr & MASK_10) + if (*isr & MASK_10) ttpci_budget_irq10_handler (dev, isr); - if (*isr & MASK_03) - printk("CI IRQ!!\n"); + if ((*isr & MASK_03) && (budget_ci->budget.ci_present)) + tasklet_schedule (&budget_ci->ciintf_irq_tasklet); } @@ -351,8 +508,8 @@ static int budget_ci_attach (struct saa7146_dev* dev, DEB_EE(("budget_ci: %p\n", budget_ci)); - spin_lock_init(&budget_ci->debilock); - budget_ci->ci_present = 0; + spin_lock_init(&budget_ci->debilock); + budget_ci->budget.ci_present = 0; if ((err = ttpci_budget_init (&budget_ci->budget, dev, info))) { kfree (budget_ci); @@ -365,8 +522,9 @@ static int budget_ci_attach (struct saa7146_dev* dev, (unsigned long) budget_ci); msp430_ir_init (budget_ci); - - ciintf_init(budget_ci); + + // UNCOMMENT TO TEST CI INTERFACE +// ciintf_init(budget_ci); return 0; } @@ -377,7 +535,9 @@ static int budget_ci_detach (struct saa7146_dev* dev) { struct budget_ci *budget_ci = (struct budget_ci*) dev->ext_priv; struct saa7146_dev *saa = budget_ci->budget.dev; - int err; + int err; + + if (budget_ci->budget.ci_present) ciintf_deinit(budget_ci); err = ttpci_budget_deinit (&budget_ci->budget); @@ -385,11 +545,9 @@ static int budget_ci_detach (struct saa7146_dev* dev) msp430_ir_deinit (budget_ci); - if (budget_ci->ci_present) ciintf_deinit(budget_ci); + // disable frontend and CI interface + saa7146_setgpio(saa, 2, SAA7146_GPIO_INPUT); - // disable frontend and CI interface - saa7146_setgpio(saa, 2, SAA7146_GPIO_INPUT); - kfree (budget_ci); return err; @@ -397,17 +555,17 @@ static int budget_ci_detach (struct saa7146_dev* dev) -static struct saa7146_extension budget_extension; +static struct saa7146_extension budget_extension; MAKE_BUDGET_INFO(ttbci, "TT-Budget/WinTV-NOVA-CI PCI", BUDGET_TT_HW_DISEQC); -MAKE_BUDGET_INFO(ttbt2, "TT-Budget/WinTV-NOVA-T PCI", BUDGET_TT); +MAKE_BUDGET_INFO(ttbt2, "TT-Budget/WinTV-NOVA-T PCI", BUDGET_TT); static struct pci_device_id pci_tbl[] = { MAKE_EXTENSION_PCI(ttbci, 0x13c2, 0x100c), MAKE_EXTENSION_PCI(ttbci, 0x13c2, 0x100f), - MAKE_EXTENSION_PCI(ttbt2, 0x13c2, 0x1011), + MAKE_EXTENSION_PCI(ttbt2, 0x13c2, 0x1011), { - .vendor = 0, + .vendor = 0, } }; @@ -415,7 +573,7 @@ MODULE_DEVICE_TABLE(pci, pci_tbl); static struct saa7146_extension budget_extension = { .name = "budget_ci dvb\0", - .flags = 0, + .flags = 0, .module = THIS_MODULE, .pci_tbl = &pci_tbl[0], @@ -424,10 +582,10 @@ static struct saa7146_extension budget_extension = { .irq_mask = MASK_03 | MASK_06 | MASK_10, .irq_func = budget_ci_irq, -}; +}; -static int __init budget_ci_init(void) +static int __init budget_ci_init(void) { return saa7146_register_extension(&budget_extension); } @@ -436,7 +594,7 @@ static int __init budget_ci_init(void) static void __exit budget_ci_exit(void) { DEB_EE((".\n")); - saa7146_unregister_extension(&budget_extension); + saa7146_unregister_extension(&budget_extension); } module_init(budget_ci_init); diff --git a/linux/drivers/media/dvb/ttpci/budget-core.c b/linux/drivers/media/dvb/ttpci/budget-core.c index 302a3495c..2b626a4f4 100644 --- a/linux/drivers/media/dvb/ttpci/budget-core.c +++ b/linux/drivers/media/dvb/ttpci/budget-core.c @@ -6,12 +6,12 @@ * Copyright (C) 2002 Ralph Metzler <rjkm@metzlerbros.de> * * Copyright (C) 1999-2002 Ralph Metzler - * & Marcus Metzler for convergence integrated media GmbH - * + * & Marcus Metzler for convergence integrated media GmbH + * * 26feb2004 Support for FS Activy Card (Grundig tuner) by - * Michael Dreher <michael@5dot1.de>, - * Oliver Endriss <o.endriss@gmx.de>, - * Andreas 'randy' Weinberger + * Michael Dreher <michael@5dot1.de>, + * Oliver Endriss <o.endriss@gmx.de>, + * Andreas 'randy' Weinberger * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License @@ -21,7 +21,7 @@ * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * @@ -47,33 +47,33 @@ static int stop_ts_capture(struct budget *budget) { DEB_EE(("budget: %p\n",budget)); - if (--budget->feeding) - return budget->feeding; + if (--budget->feeding) + return budget->feeding; - saa7146_write(budget->dev, MC1, MASK_20); // DMA3 off + saa7146_write(budget->dev, MC1, MASK_20); // DMA3 off IER_DISABLE(budget->dev, MASK_10); - return 0; + return 0; } static int start_ts_capture (struct budget *budget) { - struct saa7146_dev *dev=budget->dev; + struct saa7146_dev *dev=budget->dev; DEB_EE(("budget: %p\n",budget)); - if (budget->feeding) - return ++budget->feeding; + if (budget->feeding) + return ++budget->feeding; - saa7146_write(dev, MC1, MASK_20); // DMA3 off + saa7146_write(dev, MC1, MASK_20); // DMA3 off - memset(budget->grabbing, 0x00, TS_HEIGHT*TS_WIDTH); + memset(budget->grabbing, 0x00, TS_HEIGHT*TS_WIDTH); - saa7146_write(dev, PCI_BT_V1, 0x001c0000 | - (saa7146_read(dev, PCI_BT_V1) & ~0x001f0000)); + saa7146_write(dev, PCI_BT_V1, 0x001c0000 | + (saa7146_read(dev, PCI_BT_V1) & ~0x001f0000)); - budget->tsf=0xff; - budget->ttbp=0; + budget->tsf=0xff; + budget->ttbp=0; /* * Signal path on the Activy: @@ -82,71 +82,77 @@ static int start_ts_capture (struct budget *budget) * * Since the tuner feeds 204 bytes packets into the SAA7146, * DMA3 is configured to strip the trailing 16 FEC bytes: - * Pitch: 188, NumBytes3: 188, NumLines3: 1024 + * Pitch: 188, NumBytes3: 188, NumLines3: 1024 */ - if (budget->card->type == BUDGET_FS_ACTIVY) { - saa7146_write(dev, DD1_INIT, 0x04000000); - saa7146_write(dev, MC2, (MASK_09 | MASK_25)); - saa7146_write(dev, BRS_CTRL, 0x00000000); - } else { - saa7146_write(dev, DD1_INIT, 0x02000600); - saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26)); - saa7146_write(dev, BRS_CTRL, 0x60000000); - } - - saa7146_write(dev, MC2, (MASK_08 | MASK_24)); - mdelay(10); - - saa7146_write(dev, BASE_ODD3, 0); - saa7146_write(dev, BASE_EVEN3, 0); - saa7146_write(dev, PROT_ADDR3, TS_WIDTH*TS_HEIGHT); - saa7146_write(dev, BASE_PAGE3, budget->pt.dma |ME1|0x90); - - if (budget->card->type == BUDGET_FS_ACTIVY) { - saa7146_write(dev, PITCH3, TS_WIDTH/2); - saa7146_write(dev, NUM_LINE_BYTE3, ((TS_HEIGHT*2)<<16)|(TS_WIDTH/2)); - } else { - saa7146_write(dev, PITCH3, TS_WIDTH); - saa7146_write(dev, NUM_LINE_BYTE3, (TS_HEIGHT<<16)|TS_WIDTH); - } - - saa7146_write(dev, MC2, (MASK_04 | MASK_20)); - saa7146_write(dev, MC1, (MASK_04 | MASK_20)); // DMA3 on + if (budget->card->type == BUDGET_FS_ACTIVY) { + saa7146_write(dev, DD1_INIT, 0x04000000); + saa7146_write(dev, MC2, (MASK_09 | MASK_25)); + saa7146_write(dev, BRS_CTRL, 0x00000000); + } else { + if (!budget->ci_present) { + saa7146_write(dev, DD1_INIT, 0x02000600); + saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26)); + saa7146_write(dev, BRS_CTRL, 0x60000000); + } else { + saa7146_write(dev, DD1_INIT, 0x06000200); + saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26)); + saa7146_write(dev, BRS_CTRL, 0x00000000); + } + } + + saa7146_write(dev, MC2, (MASK_08 | MASK_24)); + mdelay(10); + + saa7146_write(dev, BASE_ODD3, 0); + saa7146_write(dev, BASE_EVEN3, 0); + saa7146_write(dev, PROT_ADDR3, TS_WIDTH*TS_HEIGHT); + saa7146_write(dev, BASE_PAGE3, budget->pt.dma |ME1|0x90); + + if (budget->card->type == BUDGET_FS_ACTIVY) { + saa7146_write(dev, PITCH3, TS_WIDTH/2); + saa7146_write(dev, NUM_LINE_BYTE3, ((TS_HEIGHT*2)<<16)|(TS_WIDTH/2)); + } else { + saa7146_write(dev, PITCH3, TS_WIDTH); + saa7146_write(dev, NUM_LINE_BYTE3, (TS_HEIGHT<<16)|TS_WIDTH); + } + + saa7146_write(dev, MC2, (MASK_04 | MASK_20)); + saa7146_write(dev, MC1, (MASK_04 | MASK_20)); // DMA3 on IER_ENABLE(budget->dev, MASK_10); // VPE - return ++budget->feeding; + return ++budget->feeding; } static void vpeirq (unsigned long data) { - struct budget *budget = (struct budget*) data; - u8 *mem = (u8 *)(budget->grabbing); - u32 olddma = budget->ttbp; - u32 newdma = saa7146_read(budget->dev, PCI_VDP3); + struct budget *budget = (struct budget*) data; + u8 *mem = (u8 *)(budget->grabbing); + u32 olddma = budget->ttbp; + u32 newdma = saa7146_read(budget->dev, PCI_VDP3); - /* nearest lower position divisible by 188 */ - newdma -= newdma % 188; + /* nearest lower position divisible by 188 */ + newdma -= newdma % 188; - if (newdma >= TS_BUFLEN) - return; + if (newdma >= TS_BUFLEN) + return; budget->ttbp = newdma; if(budget->feeding == 0 || newdma == olddma) return; - if (newdma > olddma) { /* no wraparound, dump olddma..newdma */ - dvb_dmx_swfilter_packets(&budget->demux, - mem+olddma, (newdma-olddma) / 188); - } else { /* wraparound, dump olddma..buflen and 0..newdma */ - dvb_dmx_swfilter_packets(&budget->demux, - mem+olddma, (TS_BUFLEN-olddma) / 188); - dvb_dmx_swfilter_packets(&budget->demux, - mem, newdma / 188); - } + if (newdma > olddma) { /* no wraparound, dump olddma..newdma */ + dvb_dmx_swfilter_packets(&budget->demux, + mem+olddma, (newdma-olddma) / 188); + } else { /* wraparound, dump olddma..buflen and 0..newdma */ + dvb_dmx_swfilter_packets(&budget->demux, + mem+olddma, (TS_BUFLEN-olddma) / 188); + dvb_dmx_swfilter_packets(&budget->demux, + mem, newdma / 188); + } } @@ -156,21 +162,21 @@ static void vpeirq (unsigned long data) static int budget_start_feed(struct dvb_demux_feed *feed) { - struct dvb_demux *demux = feed->demux; - struct budget *budget = (struct budget*) demux->priv; + struct dvb_demux *demux = feed->demux; + struct budget *budget = (struct budget*) demux->priv; DEB_EE(("budget: %p\n",budget)); - if (!demux->dmx.frontend) - return -EINVAL; + if (!demux->dmx.frontend) + return -EINVAL; return start_ts_capture (budget); } static int budget_stop_feed(struct dvb_demux_feed *feed) { - struct dvb_demux *demux = feed->demux; - struct budget *budget = (struct budget *) demux->priv; + struct dvb_demux *demux = feed->demux; + struct budget *budget = (struct budget *) demux->priv; DEB_EE(("budget: %p\n",budget)); @@ -180,49 +186,49 @@ static int budget_stop_feed(struct dvb_demux_feed *feed) static int budget_register(struct budget *budget) { - struct dvb_demux *dvbdemux = &budget->demux; - int ret; + struct dvb_demux *dvbdemux = &budget->demux; + int ret; DEB_EE(("budget: %p\n",budget)); - dvbdemux->priv = (void *) budget; + dvbdemux->priv = (void *) budget; dvbdemux->filternum = 256; - dvbdemux->feednum = 256; - dvbdemux->start_feed = budget_start_feed; - dvbdemux->stop_feed = budget_stop_feed; - dvbdemux->write_to_decoder = NULL; + dvbdemux->feednum = 256; + dvbdemux->start_feed = budget_start_feed; + dvbdemux->stop_feed = budget_stop_feed; + dvbdemux->write_to_decoder = NULL; - dvbdemux->dmx.capabilities = (DMX_TS_FILTERING | DMX_SECTION_FILTERING | - DMX_MEMORY_BASED_FILTERING); + dvbdemux->dmx.capabilities = (DMX_TS_FILTERING | DMX_SECTION_FILTERING | + DMX_MEMORY_BASED_FILTERING); - dvb_dmx_init(&budget->demux); + dvb_dmx_init(&budget->demux); - budget->dmxdev.filternum = 256; - budget->dmxdev.demux = &dvbdemux->dmx; - budget->dmxdev.capabilities = 0; + budget->dmxdev.filternum = 256; + budget->dmxdev.demux = &dvbdemux->dmx; + budget->dmxdev.capabilities = 0; - dvb_dmxdev_init(&budget->dmxdev, budget->dvb_adapter); + dvb_dmxdev_init(&budget->dmxdev, budget->dvb_adapter); - budget->hw_frontend.source = DMX_FRONTEND_0; + budget->hw_frontend.source = DMX_FRONTEND_0; - ret = dvbdemux->dmx.add_frontend(&dvbdemux->dmx, &budget->hw_frontend); + ret = dvbdemux->dmx.add_frontend(&dvbdemux->dmx, &budget->hw_frontend); if (ret < 0) - return ret; - - budget->mem_frontend.source = DMX_MEMORY_FE; - ret=dvbdemux->dmx.add_frontend (&dvbdemux->dmx, - &budget->mem_frontend); - if (ret<0) - return ret; - - ret=dvbdemux->dmx.connect_frontend (&dvbdemux->dmx, - &budget->hw_frontend); - if (ret < 0) - return ret; - - dvb_net_init(budget->dvb_adapter, &budget->dvb_net, &dvbdemux->dmx); + return ret; + + budget->mem_frontend.source = DMX_MEMORY_FE; + ret=dvbdemux->dmx.add_frontend (&dvbdemux->dmx, + &budget->mem_frontend); + if (ret<0) + return ret; + + ret=dvbdemux->dmx.connect_frontend (&dvbdemux->dmx, + &budget->hw_frontend); + if (ret < 0) + return ret; + + dvb_net_init(budget->dvb_adapter, &budget->dvb_net, &dvbdemux->dmx); return 0; } @@ -230,18 +236,18 @@ static int budget_register(struct budget *budget) static void budget_unregister(struct budget *budget) { - struct dvb_demux *dvbdemux=&budget->demux; + struct dvb_demux *dvbdemux=&budget->demux; DEB_EE(("budget: %p\n",budget)); dvb_net_release(&budget->dvb_net); dvbdemux->dmx.close(&dvbdemux->dmx); - dvbdemux->dmx.remove_frontend(&dvbdemux->dmx, &budget->hw_frontend); - dvbdemux->dmx.remove_frontend(&dvbdemux->dmx, &budget->mem_frontend); + dvbdemux->dmx.remove_frontend(&dvbdemux->dmx, &budget->hw_frontend); + dvbdemux->dmx.remove_frontend(&dvbdemux->dmx, &budget->mem_frontend); - dvb_dmxdev_release(&budget->dmxdev); - dvb_dmx_release(&budget->demux); + dvb_dmxdev_release(&budget->dmxdev); + dvb_dmx_release(&budget->demux); } @@ -270,12 +276,12 @@ int ttpci_budget_init (struct budget *budget, dvb_register_adapter(&budget->dvb_adapter, budget->card->name, THIS_MODULE); /* set dd1 stream a & b */ - saa7146_write(dev, DD1_STREAM_B, 0x00000000); + saa7146_write(dev, DD1_STREAM_B, 0x00000000); saa7146_write(dev, DD1_INIT, 0x02000000); saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26)); /* the Siemens DVB needs this if you want to have the i2c chips - get recognized before the main driver is loaded */ + get recognized before the main driver is loaded */ if (bi->type != BUDGET_FS_ACTIVY) saa7146_write(dev, GPIO_CTRL, 0x500000); /* GPIO 3 = 1 */ @@ -298,7 +304,7 @@ int ttpci_budget_init (struct budget *budget, saa7146_write(dev, PCI_BT_V1, 0x001c0000); /* upload all */ - saa7146_write(dev, GPIO_CTRL, 0x000000); + saa7146_write(dev, GPIO_CTRL, 0x000000); tasklet_init (&budget->vpe_tasklet, vpeirq, (unsigned long) budget); @@ -308,7 +314,7 @@ int ttpci_budget_init (struct budget *budget, else saa7146_setgpio(dev, 2, SAA7146_GPIO_OUTHI); - if (budget_register(budget) == 0) { + if (budget_register(budget) == 0) { return 0; } err: @@ -365,4 +371,3 @@ EXPORT_SYMBOL_GPL(budget_debug); MODULE_PARM(budget_debug,"i"); MODULE_LICENSE("GPL"); - diff --git a/linux/drivers/media/dvb/ttpci/budget.h b/linux/drivers/media/dvb/ttpci/budget.h index 3c730423d..b0d315a0f 100644 --- a/linux/drivers/media/dvb/ttpci/budget.h +++ b/linux/drivers/media/dvb/ttpci/budget.h @@ -45,6 +45,8 @@ struct budget { int fe_synced; struct semaphore pid_mutex; + + int ci_present; u8 tsf; u32 ttbp; @@ -75,7 +77,6 @@ static struct saa7146_pci_extension_data x_var = { \ #define BUDGET_PATCH 3 #define BUDGET_FS_ACTIVY 4 - extern int ttpci_budget_init (struct budget *budget, struct saa7146_dev* dev, struct saa7146_pci_extension_data *info); diff --git a/linux/include/media/saa7146.h b/linux/include/media/saa7146.h index e3d94070a..b3019ceb7 100644 --- a/linux/include/media/saa7146.h +++ b/linux/include/media/saa7146.h @@ -193,8 +193,6 @@ int saa7146_wait_for_debi_done(struct saa7146_dev *dev); /* debi defines */ #define DEBINOSWAP 0x000e0000 -#define DEBICICTL 0x00420000 -#define DEBICICAM 0x02420000 /* define for the register programming sequencer (rps) */ #define CMD_NOP 0x00000000 /* No operation */ |