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58aae0a00e
Some legacy devices have configuration ROM against standard AV/C device. They have vendor directory to store model identifier. It is described in annex of the following document. - Configuration ROM for AV/C Devices 1.0 (Dec. 12, 2000, 1394 Trading Association) In the case, current implementation of core function does not detect the model identifier, thus device attributes and modalias of unit have lack of it. Another KUnit test is required for the case, and this commit is for the purpose. The following output is the parse result for the hard-coded data, by config-rom-pretty-printer in linux-firewire-utils (https://git.kernel.org/pub/scm/utils/ieee1394/linux-firewire-utils.git/). The data is written by my hand. $ config-rom-pretty-printer < /tmp/rom.img ROM header and bus information block ----------------------------------------------------------------- 1024 04199fe7 bus_info_length 4, crc_length 25, crc 40935 1028 31333934 bus_name "1394" 1032 e0644000 irmc 1, cmc 1, isc 1, bmc 0, cyc_clk_acc 100, max_rec 4 (32) 1036 00112233 company_id 001122 | 1040 44556677 device_id 220189779575 | EUI-64 4822678189205111 root directory ----------------------------------------------------------------- 1044 0005dace directory_length 5, crc 56014 1048 03012345 vendor 1052 0c0083c0 node capabilities: per IEEE 1394 1056 8d000009 --> eui-64 leaf at 1092 1060 d1000002 --> unit directory at 1068 1064 c3000004 --> vendor directory at 1080 unit directory at 1068 ----------------------------------------------------------------- 1068 0002e107 directory_length 2, crc 57607 1072 12abcdef specifier id 1076 13543210 version vendor directory at 1080 ----------------------------------------------------------------- 1080 0002cb73 directory_length 2, crc 52083 1084 17fedcba model 1088 81000004 --> descriptor leaf at 1104 eui-64 leaf at 1092 ----------------------------------------------------------------- 1092 00026dc1 leaf_length 2, crc 28097 1096 00112233 company_id 001122 | 1100 44556677 device_id 220189779575 | EUI-64 4822678189205111 descriptor leaf at 1104 ----------------------------------------------------------------- 1104 00050e84 leaf_length 5, crc 3716 1108 00000000 textual descriptor 1112 00000000 minimal ASCII 1116 41424344 "ABCD" 1120 45464748 "EFGH" 1124 494a0000 "IJ" Link: https://lore.kernel.org/r/20231221134849.603857-6-o-takashi@sakamocchi.jp Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> |
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.