linux/drivers/char/ipmi/Kconfig, branch master

ipmi: ssif_bmc: Fix KUnit test link failure when KUNIT=m

2026-04-07T12:33:23Z

Building with CONFIG_KUNIT=m and CONFIG_SSIF_IPMI_BMC_KUNIT_TEST=y results in link errors such as: undefined reference to `kunit_binary_assert_format' undefined reference to `__kunit_do_failed_assertion' This happens because the test code is built-in while the KUnit core is built as a module, so the required KUnit symbols are not available at link time. Fix this by requiring KUNIT to be built-in when enabling SSIF_IPMI_BMC_KUNIT_TEST. Signed-off-by: Jian Zhang Reported-by: kernel test robot Closes: https://lore.kernel.org/oe-kbuild-all/202604071448.zUBjPYPu-lkp@intel.com/ Message-ID: <20260407094647.356661-1-zhangjian.3032@bytedance.com> Signed-off-by: Corey Minyard

ipmi: ssif_bmc: add unit test for state machine

2026-04-03T15:23:42Z

Add some unit test for state machine when in SSIF_ABORTING state. Fixes: dd2bc5cc9e25 ("ipmi: ssif_bmc: Add SSIF BMC driver") Signed-off-by: Jian Zhang Message-ID: <20260403143939.434017-1-zhangjian.3032@bytedance.com> Signed-off-by: Corey Minyard

ipmi: Add Loongson-2K BMC support

2025-09-16T15:15:54Z

This patch adds Loongson-2K BMC IPMI support. According to the existing design, we use software simulation to implement the KCS interface registers: Stauts/Command/Data_Out/Data_In. Also since both host side and BMC side read and write kcs status, fifo flag is used to ensure data consistency. The single KCS message block is as follows: +-------------------------------------------------------------------------+ |FIFO flags| KCS register data | CMD data | KCS version | WR REQ | WR ACK | +-------------------------------------------------------------------------+ Co-developed-by: Chong Qiao Signed-off-by: Chong Qiao Reviewed-by: Huacai Chen Acked-by: Corey Minyard Signed-off-by: Binbin Zhou Message-ID: <8f9ffb6f0405345af8f04193ce1510aacd075e72.1756987761.git.zhoubinbin@loongson.cn> Signed-off-by: Corey Minyard

ipmi: ASPEED_BT_IPMI_BMC: select REGMAP_MMIO instead of depending on it

2023-03-02T22:14:15Z

REGMAP is a hidden (not user visible) symbol. Users cannot set it directly thru "make *config", so drivers should select it instead of depending on it if they need it. Consistently using "select" or "depends on" can also help reduce Kconfig circular dependency issues. Therefore, change the use of "depends on REGMAP_MMIO" to "select REGMAP_MMIO", which will also set REGMAP. Fixes: eb994594bc22 ("ipmi: bt-bmc: Use a regmap for register access") Signed-off-by: Randy Dunlap Cc: Andrew Jeffery Cc: Corey Minyard Cc: openipmi-developer@lists.sourceforge.net Cc: Arnd Bergmann Cc: Greg Kroah-Hartman Message-Id: <20230226053953.4681-2-rdunlap@infradead.org> Signed-off-by: Corey Minyard

ipmi: ssif_bmc: Add SSIF BMC driver

2022-10-17T14:51:26Z

The SMBus system interface (SSIF) IPMI BMC driver can be used to perform in-band IPMI communication with their host in management (BMC) side. Thanks Dan for the copy_from_user() fix in the link below. Link: https://lore.kernel.org/linux-arm-kernel/20220310114119.13736-4-quan@os.amperecomputing.com/ Signed-off-by: Quan Nguyen Message-Id: <20221004093106.1653317-2-quan@os.amperecomputing.com> Signed-off-by: Corey Minyard

char: ipmi: modify NPCM KCS configuration

2022-07-19T00:27:57Z

Modify NPCM IPMI KCS configuration to support all NPCM BMC SoC. Signed-off-by: Tomer Maimon Message-Id: <20220717121124.154734-3-tmaimon77@gmail.com> Signed-off-by: Corey Minyard

ipmi: ipmb: fix dependencies to eliminate build error

2021-10-14T16:17:18Z

When CONFIG_I2C=m, CONFIG_I2C_SLAVE=y (bool), and CONFIG_IPMI_IPMB=y, the build fails with: ld: drivers/char/ipmi/ipmi_ipmb.o: in function `ipmi_ipmb_remove': ipmi_ipmb.c:(.text+0x6b): undefined reference to `i2c_slave_unregister' ld: drivers/char/ipmi/ipmi_ipmb.o: in function `ipmi_ipmb_thread': ipmi_ipmb.c:(.text+0x2a4): undefined reference to `i2c_transfer' ld: drivers/char/ipmi/ipmi_ipmb.o: in function `ipmi_ipmb_probe': ipmi_ipmb.c:(.text+0x646): undefined reference to `i2c_slave_register' ld: drivers/char/ipmi/ipmi_ipmb.o: in function `ipmi_ipmb_driver_init': ipmi_ipmb.c:(.init.text+0xa): undefined reference to `i2c_register_driver' ld: drivers/char/ipmi/ipmi_ipmb.o: in function `ipmi_ipmb_driver_exit': ipmi_ipmb.c:(.exit.text+0x8): undefined reference to `i2c_del_driver' This is due to having a tristate depending on a bool symbol. By adding I2C (tristate) as a dependency, the desired dependencies are met, causing IPMI_IPMB to be changed from =y to =m: -CONFIG_IPMI_IPMB=y +CONFIG_IPMI_IPMB=m Fixes: 63c4eb347164 ("ipmi:ipmb: Add initial support for IPMI over IPMB") Signed-off-by: Randy Dunlap Cc: Corey Minyard Cc: openipmi-developer@lists.sourceforge.net Cc: Arnd Bergmann Cc: Greg Kroah-Hartman Message-Id: <20211012204416.23108-1-rdunlap@infradead.org> Signed-off-by: Corey Minyard

ipmi:ssif: Use depends on, not select, for I2C

2021-10-05T11:54:17Z

It's more appropriate here. Suggested-by: Randy Dunlap Signed-off-by: Corey Minyard

ipmi:ipmb: Add initial support for IPMI over IPMB

2021-10-05T11:54:17Z

This provides access to the management controllers on an IPMB bus to a device sitting on the IPMB bus. It also provides slave capability to respond to received messages on the bus. Signed-off-by: Corey Minyard Tested-by: Andrew Manley Reviewed-by: Andrew Manley

ipmi: kcs_bmc: Add serio adaptor

2021-06-22T00:50:28Z

kcs_bmc_serio acts as a bridge between the KCS drivers in the IPMI subsystem and the existing userspace interfaces available through the serio subsystem. This is useful when userspace would like to make use of the BMC KCS devices for purposes that aren't IPMI. Signed-off-by: Andrew Jeffery Message-Id: <20210608104757.582199-12-andrew@aj.id.au> Reviewed-by: Zev Weiss Signed-off-by: Corey Minyard