linux/arch/loongarch
Huacai Chen 8e02c3b782 LoongArch: Add writecombine support for DMW-based ioremap()
Currently, only TLB-based ioremap() support writecombine, so add the
counterpart for DMW-based ioremap() with help of DMW2. The base address
(WRITECOMBINE_BASE) is configured as 0xa000000000000000.

DMW3 is unused by kernel now, however firmware may leave garbage in them
and interfere kernel's address mapping. So clear it as necessary.

BTW, centralize the DMW configuration to macro SETUP_DMWINS.

Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
2024-07-20 22:40:59 +08:00
..
boot LoongArch: Fix GMAC's phy-mode definitions in dts 2024-06-03 15:45:53 +08:00
configs LoongArch changes for v6.10 2024-05-22 09:43:07 -07:00
crypto LoongArch/crypto: Clean up useless assignment operations 2024-03-19 15:50:34 +08:00
include LoongArch: Add writecombine support for DMW-based ioremap() 2024-07-20 22:40:59 +08:00
kernel LoongArch: Add writecombine support for DMW-based ioremap() 2024-07-20 22:40:59 +08:00
kvm LoongArch: KVM: Remove an unneeded semicolon 2024-06-21 10:18:40 +08:00
lib LoongArch: Select ARCH_SUPPORTS_INT128 if CC_HAS_INT128 2024-05-14 12:24:18 +08:00
mm LoongArch changes for v6.10 2024-05-22 09:43:07 -07:00
net bpf: Take return from set_memory_rox() into account with bpf_jit_binary_lock_ro() 2024-03-14 19:28:52 -07:00
pci LoongArch: Add FDT booting support from efi system table 2022-12-14 08:41:53 +08:00
power LoongArch: Add writecombine support for DMW-based ioremap() 2024-07-20 22:40:59 +08:00
vdso Makefile: remove redundant tool coverage variables 2024-05-14 23:35:48 +09:00
Kbuild LoongArch: Allow device trees be built into the kernel 2024-01-17 12:43:00 +08:00
Kconfig LoongArch: Add ARCH_HAS_DEBUG_VM_PGTABLE support 2024-07-20 22:40:59 +08:00
Kconfig.debug LoongArch: Only allow OBJTOOL & ORC unwinder if toolchain supports -mthin-add-sub 2024-06-21 10:18:40 +08:00
Makefile - A series ("kbuild: enable more warnings by default") from Arnd 2024-05-22 18:59:29 -07:00