The Loongson 7A1000 bridge chip has been released for several years since the second half of 2017, but it is not supported by the Linux mainline kernel while it only works well with the Loongson internal kernel version. When I update the latest version of Linux mainline kernel on the Loongson 3A3000 CPU and 7A1000 bridge chip system, the boot process failed and I feel depressed. The 7A1000 bridge chip is used a lot with 3A3000 or 3A4000 CPU in the most Loongson desktop and sever products, it is important to support Loongson 7A1000 bridge chip by the Linux mainline kernel. This patch series adds the basic support for the Loongson 7A1000 bridge chip, when apply these patches based on linux-5.6-rc5, the boot process is successful and we can login normally used with the latest firmware and discrete graphics card, the next work to do is power management and some other controller device drivers. Additionally, when I git clone mips code [1], the speed is too slow and clone always failed, so this patch series is based on the latest linux-5.6-rc5 [2]. If you have any questions and suggestions, please let me know. Thanks, Tiezhu Yang [1] git clone https://git.kernel.org/pub/scm/linux/kernel/git/mips/linux.git [2] git clone https://github.com/torvalds/linux.git Tiezhu Yang (6): PCI: Add Loongson vendor ID and 7A1000 device IDs AHCI: Add support for Loongson 7A1000 SATA controller MIPS: Loongson: Use firmware arguments to get board name MIPS: Loongson: Add DMA support for 7A1000 MIPS: Loongson: Add PCI support for 7A1000 MIPS: Loongson: Add support for 7A1000 interrupt controller arch/mips/include/asm/mach-loongson64/boot_param.h | 2 + arch/mips/include/asm/mach-loongson64/ioaicu.h | 166 +++++++++++ arch/mips/include/asm/mach-loongson64/irq.h | 2 + arch/mips/include/asm/mach-loongson64/pci.h | 1 + arch/mips/loongson64/Makefile | 2 +- arch/mips/loongson64/dma.c | 49 +++- arch/mips/loongson64/env.c | 5 + arch/mips/loongson64/init.c | 13 + arch/mips/loongson64/ioaicu.c | 305 +++++++++++++++++++++ arch/mips/loongson64/irq.c | 20 +- arch/mips/loongson64/pci.c | 12 +- arch/mips/loongson64/smp.c | 11 +- arch/mips/pci/Makefile | 2 +- arch/mips/pci/ops-loongson3-ls7a.c | 132 +++++++++ drivers/ata/ahci.c | 8 + include/linux/pci_ids.h | 18 ++ 16 files changed, 733 insertions(+), 15 deletions(-) create mode 100644 arch/mips/include/asm/mach-loongson64/ioaicu.h create mode 100644 arch/mips/loongson64/ioaicu.c create mode 100644 arch/mips/pci/ops-loongson3-ls7a.c -- 2.1.0
