€•¤@      Œsphinx.addnodes”Œdocument”“”)”}”(Œ	rawsource”Œ ”Œchildren”]”(Œtranslations”ŒLanguagesNode”“”)”}”(hhh]”(h Œpending_xref”“”)”}”(hhh]”Œdocutils.nodes”ŒText”“”ŒChinese (Simplified)”…””}”Œparent”hsbaŒ
attributes”}”(Œids”]”Œclasses”]”Œnames”]”Œdupnames”]”Œbackrefs”]”Œ	refdomain”Œstd”Œreftype”Œdoc”Œ	reftarget”Œ9/translations/zh_CN/userspace-api/media/dvb/ca_high_level”Œmodname”NŒ	classname”NŒrefexplicit”ˆuŒtagname”hhhubh)”}”(hhh]”hŒChinese (Traditional)”…””}”hh2sbah}”(h]”h ]”h"]”h$]”h&]”Œ	refdomain”h)Œreftype”h+Œ	reftarget”Œ9/translations/zh_TW/userspace-api/media/dvb/ca_high_level”Œmodname”NŒ	classname”NŒrefexplicit”ˆuh1hhhubh)”}”(hhh]”hŒItalian”…””}”hhFsbah}”(h]”h ]”h"]”h$]”h&]”Œ	refdomain”h)Œreftype”h+Œ	reftarget”Œ9/translations/it_IT/userspace-api/media/dvb/ca_high_level”Œmodname”NŒ	classname”NŒrefexplicit”ˆuh1hhhubh)”}”(hhh]”hŒJapanese”…””}”hhZsbah}”(h]”h ]”h"]”h$]”h&]”Œ	refdomain”h)Œreftype”h+Œ	reftarget”Œ9/translations/ja_JP/userspace-api/media/dvb/ca_high_level”Œmodname”NŒ	classname”NŒrefexplicit”ˆuh1hhhubh)”}”(hhh]”hŒKorean”…””}”hhnsbah}”(h]”h ]”h"]”h$]”h&]”Œ	refdomain”h)Œreftype”h+Œ	reftarget”Œ9/translations/ko_KR/userspace-api/media/dvb/ca_high_level”Œmodname”NŒ	classname”NŒrefexplicit”ˆuh1hhhubh)”}”(hhh]”hŒPortuguese (Brazilian)”…””}”hh‚sbah}”(h]”h ]”h"]”h$]”h&]”Œ	refdomain”h)Œreftype”h+Œ	reftarget”Œ9/translations/pt_BR/userspace-api/media/dvb/ca_high_level”Œmodname”NŒ	classname”NŒrefexplicit”ˆuh1hhhubh)”}”(hhh]”hŒSpanish”…””}”hh–sbah}”(h]”h ]”h"]”h$]”h&]”Œ	refdomain”h)Œreftype”h+Œ	reftarget”Œ9/translations/sp_SP/userspace-api/media/dvb/ca_high_level”Œmodname”NŒ	classname”NŒrefexplicit”ˆuh1hhhubeh}”(h]”h ]”h"]”h$]”h&]”Œcurrent_language”ŒEnglish”uh1h
hhŒ	_document”hŒsource”NŒline”NubhŒcomment”“”)”}”(hŒ SPDX-License-Identifier: GPL-2.0”h]”hŒ SPDX-License-Identifier: GPL-2.0”…””}”hh·sbah}”(h]”h ]”h"]”h$]”h&]”Œ	xml:space”Œpreserve”uh1hµhhh²hh³ŒS/var/lib/git/docbuild/linux/Documentation/userspace-api/media/dvb/ca_high_level.rst”h´KubhŒsection”“”)”}”(hhh]”(hŒtitle”“”)”}”(hŒThe High level CI API”h]”hŒThe High level CI API”…””}”(hhÏh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÍhhÊh²hh³hÇh´KubhŒnote”“”)”}”(hŒThis documentation is outdated.”h]”hŒ	paragraph”“”)”}”(hháh]”hŒThis documentation is outdated.”…””}”(hhåh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hãh³hÇh´Khhßubah}”(h]”h ]”h"]”h$]”h&]”uh1hÝhhÊh²hh³hÇh´Nubhä)”}”(hŒTThis document describes the high level CI API as in accordance to the
Linux DVB API.”h]”hŒTThis document describes the high level CI API as in accordance to the
Linux DVB API.”…””}”(hhøh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hãh³hÇh´K
hhÊh²hubhä)”}”(hŒüWith the High Level CI approach any new card with almost any random
architecture can be implemented with this style, the definitions
inside the switch statement can be easily adapted for any card, thereby
eliminating the need for any additional ioctls.”h]”hŒüWith the High Level CI approach any new card with almost any random
architecture can be implemented with this style, the definitions
inside the switch statement can be easily adapted for any card, thereby
eliminating the need for any additional ioctls.”…””}”(hj  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hãh³hÇh´KhhÊh²hubhä)”}”(hX  The disadvantage is that the driver/hardware has to manage the rest. For
the application programmer it would be as simple as sending/receiving an
array to/from the CI ioctls as defined in the Linux DVB API. No changes
have been made in the API to accommodate this feature.”h]”hX  The disadvantage is that the driver/hardware has to manage the rest. For
the application programmer it would be as simple as sending/receiving an
array to/from the CI ioctls as defined in the Linux DVB API. No changes
have been made in the API to accommodate this feature.”…””}”(hj  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hãh³hÇh´KhhÊh²hubhÉ)”}”(hhh]”(hÎ)”}”(hŒ&Why the need for another CI interface?”h]”hŒ&Why the need for another CI interface?”…””}”(hj%  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÍhj"  h²hh³hÇh´Kubhä)”}”(hŒuThis is one of the most commonly asked question. Well a nice question.
Strictly speaking this is not a new interface.”h]”hŒuThis is one of the most commonly asked question. Well a nice question.
Strictly speaking this is not a new interface.”…””}”(hj3  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hãh³hÇh´Khj"  h²hubhä)”}”(hŒ6The CI interface is defined in the DVB API in ca.h as:”h]”hŒ6The CI interface is defined in the DVB API in ca.h as:”…””}”(hjA  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hãh³hÇh´Khj"  h²hubhŒliteral_block”“”)”}”(hXc  typedef struct ca_slot_info {
        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_DESCR         8     /* built-in descrambler */
#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;”h]”hXc  typedef struct ca_slot_info {
        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_DESCR         8     /* built-in descrambler */
#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;”…””}”hjQ  sbah}”(h]”h ]”h"]”h$]”h&]”hÅhÆŒforce”‰Œlanguage”Œc”Œhighlight_args”}”uh1jO  h³hÇh´K!hj"  h²hubhä)”}”(hŒƒThis CI interface follows the CI high level interface, which is not
implemented by most applications. Hence this area is revisited.”h]”hŒƒThis CI interface follows the CI high level interface, which is not
implemented by most applications. Hence this area is revisited.”…””}”(hjd  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hãh³hÇh´K2hj"  h²hubhä)”}”(hŒŽThis CI interface is quite different in the case that it tries to
accommodate all other CI based devices, that fall into the other categories.”h]”hŒŽThis CI interface is quite different in the case that it tries to
accommodate all other CI based devices, that fall into the other categories.”…””}”(hjr  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hãh³hÇh´K5hj"  h²hubhä)”}”(hŒÍThis means that this CI interface handles the EN50221 style tags in the
Application layer only and no session management is taken care of by the
application. The driver/hardware will take care of all that.”h]”hŒÍThis means that this CI interface handles the EN50221 style tags in the
Application layer only and no session management is taken care of by the
application. The driver/hardware will take care of all that.”…””}”(hj€  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hãh³hÇh´K8hj"  h²hubhä)”}”(hX  This interface is purely an EN50221 interface exchanging APDU's. This
means that no session management, link layer or a transport layer do
exist in this case in the application to driver communication. It is
as simple as that. The driver/hardware has to take care of that.”h]”hX  This interface is purely an EN50221 interface exchanging APDUâ€™s. This
means that no session management, link layer or a transport layer do
exist in this case in the application to driver communication. It is
as simple as that. The driver/hardware has to take care of that.”…””}”(hjŽ  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hãh³hÇh´K<hj"  h²hubhä)”}”(hŒXWith this High Level CI interface, the interface can be defined with the
regular ioctls.”h]”hŒXWith this High Level CI interface, the interface can be defined with the
regular ioctls.”…””}”(hjœ  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hãh³hÇh´KAhj"  h²hubhä)”}”(hŒ?All these ioctls are also valid for the High level CI interface”h]”hŒ?All these ioctls are also valid for the High level CI interface”…””}”(hjª  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hãh³hÇh´KDhj"  h²hubhä)”}”(hXi  #define CA_RESET          _IO('o', 128)
#define CA_GET_CAP        _IOR('o', 129, ca_caps_t)
#define CA_GET_SLOT_INFO  _IOR('o', 130, ca_slot_info_t)
#define CA_GET_DESCR_INFO _IOR('o', 131, ca_descr_info_t)
#define CA_GET_MSG        _IOR('o', 132, ca_msg_t)
#define CA_SEND_MSG       _IOW('o', 133, ca_msg_t)
#define CA_SET_DESCR      _IOW('o', 134, ca_descr_t)”h]”hX…  #define CA_RESET          _IO(â€˜oâ€™, 128)
#define CA_GET_CAP        _IOR(â€˜oâ€™, 129, ca_caps_t)
#define CA_GET_SLOT_INFO  _IOR(â€˜oâ€™, 130, ca_slot_info_t)
#define CA_GET_DESCR_INFO _IOR(â€˜oâ€™, 131, ca_descr_info_t)
#define CA_GET_MSG        _IOR(â€˜oâ€™, 132, ca_msg_t)
#define CA_SEND_MSG       _IOW(â€˜oâ€™, 133, ca_msg_t)
#define CA_SET_DESCR      _IOW(â€˜oâ€™, 134, ca_descr_t)”…””}”(hj¸  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hãh³hÇh´KFhj"  h²hubhä)”}”(hŒ;On querying the device, the device yields information thus:”h]”hŒ;On querying the device, the device yields information thus:”…””}”(hjÆ  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hãh³hÇh´KOhj"  h²hubjP  )”}”(hX  CA_GET_SLOT_INFO
----------------------------
Command = [info]
APP: Number=[1]
APP: Type=[1]
APP: flags=[1]
APP: CI High level interface
APP: CA/CI Module Present

CA_GET_CAP
----------------------------
Command = [caps]
APP: Slots=[1]
APP: Type=[1]
APP: Descrambler keys=[16]
APP: Type=[1]

CA_SEND_MSG
----------------------------
Descriptors(Program Level)=[ 09 06 06 04 05 50 ff f1]
Found CA descriptor @ program level

(20) ES type=[2] ES pid=[201]  ES length =[0 (0x0)]
(25) ES type=[4] ES pid=[301]  ES length =[0 (0x0)]
ca_message length is 25 (0x19) bytes
EN50221 CA MSG=[ 9f 80 32 19 03 01 2d d1 f0 08 01 09 06 06 04 05 50 ff f1 02 e0 c9 00 00 04 e1 2d 00 00]”h]”hX  CA_GET_SLOT_INFO
----------------------------
Command = [info]
APP: Number=[1]
APP: Type=[1]
APP: flags=[1]
APP: CI High level interface
APP: CA/CI Module Present

CA_GET_CAP
----------------------------
Command = [caps]
APP: Slots=[1]
APP: Type=[1]
APP: Descrambler keys=[16]
APP: Type=[1]

CA_SEND_MSG
----------------------------
Descriptors(Program Level)=[ 09 06 06 04 05 50 ff f1]
Found CA descriptor @ program level

(20) ES type=[2] ES pid=[201]  ES length =[0 (0x0)]
(25) ES type=[4] ES pid=[301]  ES length =[0 (0x0)]
ca_message length is 25 (0x19) bytes
EN50221 CA MSG=[ 9f 80 32 19 03 01 2d d1 f0 08 01 09 06 06 04 05 50 ff f1 02 e0 c9 00 00 04 e1 2d 00 00]”…””}”hjÔ  sbah}”(h]”h ]”h"]”h$]”h&]”hÅhÆj_  ‰j`  Œnone”jb  }”uh1jO  h³hÇh´KQhj"  h²hubhä)”}”(hX#  Not all ioctl's are implemented in the driver from the API, the other
features of the hardware that cannot be implemented by the API are achieved
using the CA_GET_MSG and CA_SEND_MSG ioctls. An EN50221 style wrapper is
used to exchange the data to maintain compatibility with other hardware.”h]”hX%  Not all ioctlâ€™s are implemented in the driver from the API, the other
features of the hardware that cannot be implemented by the API are achieved
using the CA_GET_MSG and CA_SEND_MSG ioctls. An EN50221 style wrapper is
used to exchange the data to maintain compatibility with other hardware.”…””}”(hjä  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hãh³hÇh´Kohj"  h²hubjP  )”}”(hŒ¸/* a message to/from a CI-CAM */
typedef struct ca_msg {
        unsigned int index;
        unsigned int type;
        unsigned int length;
        unsigned char msg[256];
} ca_msg_t;”h]”hŒ¸/* a message to/from a CI-CAM */
typedef struct ca_msg {
        unsigned int index;
        unsigned int type;
        unsigned int length;
        unsigned char msg[256];
} ca_msg_t;”…””}”hjò  sbah}”(h]”h ]”h"]”h$]”h&]”hÅhÆj_  ‰j`  ja  jb  }”uh1jO  h³hÇh´Kthj"  h²hubhä)”}”(hŒ'The flow of data can be described thus,”h]”hŒ'The flow of data can be described thus,”…””}”(hj  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hãh³hÇh´Khj"  h²hubjP  )”}”(hXº       App (User)
     -----
     parse
       |
       |
       v
     en50221 APDU (package)
--------------------------------------
|      |                             | High Level CI driver
|      |                             |
|      v                             |
|    en50221 APDU (unpackage)        |
|      |                             |
|      |                             |
|      v                             |
|    sanity checks                   |
|      |                             |
|      |                             |
|      v                             |
|    do (H/W dep)                    |
--------------------------------------
       |    Hardware
       |
       v”h]”hXº       App (User)
     -----
     parse
       |
       |
       v
     en50221 APDU (package)
--------------------------------------
|      |                             | High Level CI driver
|      |                             |
|      v                             |
|    en50221 APDU (unpackage)        |
|      |                             |
|      |                             |
|      v                             |
|    sanity checks                   |
|      |                             |
|      |                             |
|      v                             |
|    do (H/W dep)                    |
--------------------------------------
       |    Hardware
       |
       v”…””}”hj  sbah}”(h]”h ]”h"]”h$]”h&]”hÅhÆj_  ‰j`  Œnone”jb  }”uh1jO  h³hÇh´Khj"  h²hubhä)”}”(hŒhThe High Level CI interface uses the EN50221 DVB standard, following a
standard ensures futureproofness.”h]”hŒhThe High Level CI interface uses the EN50221 DVB standard, following a
standard ensures futureproofness.”…””}”(hj  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hãh³hÇh´Kœhj"  h²hubeh}”(h]”Œ%why-the-need-for-another-ci-interface”ah ]”h"]”Œ&why the need for another ci interface?”ah$]”h&]”uh1hÈhhÊh²hh³hÇh´Kubeh}”(h]”Œthe-high-level-ci-api”ah ]”h"]”Œthe high level ci api”ah$]”h&]”uh1hÈhhh²hh³hÇh´Kubeh}”(h]”h ]”h"]”h$]”h&]”Œsource”hÇuh1hŒcurrent_source”NŒcurrent_line”NŒsettings”Œdocutils.frontend”ŒValues”“”)”}”(hÍNŒ	generator”NŒ	datestamp”NŒsource_link”NŒ
source_url”NŒtoc_backlinks”Œentry”Œfootnote_backlinks”KŒsectnum_xform”KŒstrip_comments”NŒstrip_elements_with_classes”NŒstrip_classes”NŒreport_level”KŒ
halt_level”KŒexit_status_level”KŒdebug”NŒwarning_stream”NŒ	traceback”ˆŒinput_encoding”Œ	utf-8-sig”Œinput_encoding_error_handler”Œstrict”Œoutput_encoding”Œutf-8”Œoutput_encoding_error_handler”j`  Œerror_encoding”Œutf-8”Œerror_encoding_error_handler”Œbackslashreplace”Œlanguage_code”Œen”Œrecord_dependencies”NŒconfig”NŒ	id_prefix”hŒauto_id_prefix”Œid”Œdump_settings”NŒdump_internals”NŒdump_transforms”NŒdump_pseudo_xml”NŒexpose_internals”NŒstrict_visitor”NŒ_disable_config”NŒ_source”hÇŒ_destination”NŒ_config_files”]”Œ7/var/lib/git/docbuild/linux/Documentation/docutils.conf”aŒfile_insertion_enabled”ˆŒraw_enabled”KŒline_length_limit”M'Œpep_references”NŒpep_base_url”Œhttps://peps.python.org/”Œpep_file_url_template”Œpep-%04d”Œrfc_references”NŒrfc_base_url”Œ&https://datatracker.ietf.org/doc/html/”Œ	tab_width”KŒtrim_footnote_reference_space”‰Œsyntax_highlight”Œlong”Œsmart_quotes”ˆŒsmartquotes_locales”]”Œcharacter_level_inline_markup”‰Œdoctitle_xform”‰Œdocinfo_xform”KŒsectsubtitle_xform”‰Œimage_loading”Œlink”Œembed_stylesheet”‰Œcloak_email_addresses”ˆŒsection_self_link”‰Œenv”NubŒreporter”NŒindirect_targets”]”Œsubstitution_defs”}”Œsubstitution_names”}”Œrefnames”}”Œrefids”}”Œnameids”}”(j:  j7  j2  j/  uŒ	nametypes”}”(j:  ‰j2  ‰uh}”(j7  hÊj/  j"  uŒfootnote_refs”}”Œcitation_refs”}”Œautofootnotes”]”Œautofootnote_refs”]”Œsymbol_footnotes”]”Œsymbol_footnote_refs”]”Œ	footnotes”]”Œ	citations”]”Œautofootnote_start”KŒsymbol_footnote_start”K Œ
id_counter”Œcollections”ŒCounter”“”}”…”R”Œparse_messages”]”Œtransform_messages”]”Œtransformer”NŒinclude_log”]”Œ
decoration”Nh²hub.