Hi all: This patch set introduces the Loongson-2K BMC.
It is a PCIe device present on servers similar to the Loongson-3C6000. And it is a multifunctional device (MFD), such as display as a sub-function of it. For IPMI, 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, we use fifo pointer to ensure data consistency. For the display, based on simpledrm, the resolution is read from a fixed position in the BMC since the hardware does not support auto-detection of the resolution. Of course, we will try to support multiple resolutions later, through a vbios-like approach. Especially, for the BMC reset function, since the display will be disconnected when BMC reset, we made a special treatment of re-push. Based on this, I will present it in four patches: patch-1: BMC device PCI resource allocation. patch-2: IPMI implementation patch-3: BMC reset function support Thanks. ------- V3: Patch (1/3): - Drop "MFD" in title and comment; - Fromatting code; - Add clearer comments. Patch (2/3): - Rebase linux-ipmi/next tree; - Update commit message; - Use readx()/writex() to read and write IPMI data instead of structure pointer references; - CONFIG_LOONGARCH -> MFD_LS2K_BMC; - Drop unused output. Patch (3/3): - Update commit message; - Inline the ls2k_bmc_gpio_reset_handler() function to ls2k_bmc_pdata_initial(); - Add clearer comments. - Use proper multi-line commentary as per the Coding Style documentation; - Define all magic numbers. Link to V2: https://lore.kernel.org/all/cover.1747276047.git.zhoubin...@loongson.cn/ V2: - Drop ls2kdrm, use simpledrm instead. Patch (1/3): - Use DEFINE_RES_MEM_NAMED/MFD_CELL_RES simplified code; - Add resolution fetching due to replacing the original display solution with simpledrm; - Add aperture_remove_conflicting_devices() to avoid efifb conflict with simpledrm. Patch (3/3): - This part of the function, moved from the original ls2kdrm to mfd; - Use set_console to implement the Re-push display function. Link to V1: https://lore.kernel.org/all/cover.1735550269.git.zhoubin...@loongson.cn/ Binbin Zhou (3): mfd: ls2kbmc: Introduce Loongson-2K BMC core driver ipmi: Add Loongson-2K BMC support mfd: ls2kbmc: Add Loongson-2K BMC reset function support drivers/char/ipmi/Makefile | 1 + drivers/char/ipmi/ipmi_si.h | 7 + drivers/char/ipmi/ipmi_si_intf.c | 3 + drivers/char/ipmi/ipmi_si_ls2k.c | 190 ++++++++++++ drivers/mfd/Kconfig | 12 + drivers/mfd/Makefile | 2 + drivers/mfd/ls2kbmc-mfd.c | 482 +++++++++++++++++++++++++++++++ 7 files changed, 697 insertions(+) create mode 100644 drivers/char/ipmi/ipmi_si_ls2k.c create mode 100644 drivers/mfd/ls2kbmc-mfd.c base-commit: 08effa6b77f7dbb4727f811daef0f6085c0d63c8 -- 2.47.1 _______________________________________________ Openipmi-developer mailing list Openipmi-developer@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/openipmi-developer
