+++ /dev/null
-<title>DVB CA Device</title>
-<para>The DVB CA device controls the conditional access hardware. It can be accessed through
-<emphasis role="tt">/dev/dvb/adapter0/ca0</emphasis>. Data types and and ioctl definitions can be accessed by
-including <emphasis role="tt">linux/dvb/ca.h</emphasis> in your application.
-</para>
-
-<section id="ca_data_types">
-<title>CA Data Types</title>
-
-
-<section id="ca_slot_info_t">
-<title>ca_slot_info_t</title>
- <programlisting>
- /⋆ slot interface types and info ⋆/
-
- typedef struct ca_slot_info_s {
- int num; /⋆ slot number ⋆/
-
- int type; /⋆ CA interface this slot supports ⋆/
- #define CA_CI 1 /⋆ CI high level interface ⋆/
- #define CA_CI_LINK 2 /⋆ CI link layer level interface ⋆/
- #define CA_CI_PHYS 4 /⋆ CI physical layer level interface ⋆/
- #define CA_SC 128 /⋆ simple smart card interface ⋆/
-
- unsigned int flags;
- #define CA_CI_MODULE_PRESENT 1 /⋆ module (or card) inserted ⋆/
- #define CA_CI_MODULE_READY 2
- } ca_slot_info_t;
-</programlisting>
-
-</section>
-<section id="ca_descr_info_t">
-<title>ca_descr_info_t</title>
- <programlisting>
- typedef struct ca_descr_info_s {
- unsigned int num; /⋆ number of available descramblers (keys) ⋆/
- unsigned int type; /⋆ type of supported scrambling system ⋆/
- #define CA_ECD 1
- #define CA_NDS 2
- #define CA_DSS 4
- } ca_descr_info_t;
-</programlisting>
-
-</section>
-<section id="ca_cap_t">
-<title>ca_cap_t</title>
- <programlisting>
- typedef struct ca_cap_s {
- unsigned int slot_num; /⋆ total number of CA card and module slots ⋆/
- unsigned int slot_type; /⋆ OR of all supported types ⋆/
- unsigned int descr_num; /⋆ total number of descrambler slots (keys) ⋆/
- unsigned int descr_type;/⋆ OR of all supported types ⋆/
- } ca_cap_t;
-</programlisting>
-
-</section>
-<section id="ca_msg_t">
-<title>ca_msg_t</title>
- <programlisting>
- /⋆ a message to/from a CI-CAM ⋆/
- typedef struct ca_msg_s {
- unsigned int index;
- unsigned int type;
- unsigned int length;
- unsigned char msg[256];
- } ca_msg_t;
-</programlisting>
-
-</section>
-<section id="ca_descr_t">
-<title>ca_descr_t</title>
- <programlisting>
- typedef struct ca_descr_s {
- unsigned int index;
- unsigned int parity;
- unsigned char cw[8];
- } ca_descr_t;
-</programlisting>
- </section></section>
-<section id="ca_function_calls">
-<title>CA Function Calls</title>
-
-
-<section id="ca_fopen">
-<title>open()</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This system call opens a named ca device (e.g. /dev/ost/ca) for subsequent use.</para>
-<para>When an open() call has succeeded, the device will be ready for use.
- The significance of blocking or non-blocking mode is described in the
- documentation for functions where there is a difference. It does not affect the
- semantics of the open() call itself. A device opened in blocking mode can later
- be put into non-blocking mode (and vice versa) using the F_SETFL command
- of the fcntl system call. This is a standard system call, documented in the Linux
- manual page for fcntl. Only one user can open the CA Device in O_RDWR
- mode. All other attempts to open the device in this mode will fail, and an error
- code will be returned.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>int open(const char ⋆deviceName, int flags);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>const char
- *deviceName</para>
-</entry><entry
- align="char">
-<para>Name of specific video device.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int flags</para>
-</entry><entry
- align="char">
-<para>A bit-wise OR of the following flags:</para>
-</entry>
- </row><row><entry
- align="char">
-</entry><entry
- align="char">
-<para>O_RDONLY read-only access</para>
-</entry>
- </row><row><entry
- align="char">
-</entry><entry
- align="char">
-<para>O_RDWR read/write access</para>
-</entry>
- </row><row><entry
- align="char">
-</entry><entry
- align="char">
-<para>O_NONBLOCK open in non-blocking mode</para>
-</entry>
- </row><row><entry
- align="char">
-</entry><entry
- align="char">
-<para>(blocking mode is the default)</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>ENODEV</para>
-</entry><entry
- align="char">
-<para>Device driver not loaded/available.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINTERNAL</para>
-</entry><entry
- align="char">
-<para>Internal error.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EBUSY</para>
-</entry><entry
- align="char">
-<para>Device or resource busy.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINVAL</para>
-</entry><entry
- align="char">
-<para>Invalid argument.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-</section>
-<section id="ca_fclose">
-<title>close()</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This system call closes a previously opened audio device.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>int close(int fd);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid open file descriptor.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
- </section>
-</section>