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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2023-04-27 17:46:52 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2023-04-27 17:46:52 -0700 |
| commit | 91ec4b0d11fe115581ce2835300558802ce55e6c (patch) | |
| tree | 0c31e5d1627212dd459901f899c10f036b571d0e /arch/mips/mm/cache.c | |
| parent | 513f17f8d6b67563d977c730d50bc0db6ea6e1b0 (diff) | |
| parent | 46e614cc91f7bd6f7872e434e6bcfda44454aac3 (diff) | |
Merge tag 'mips_6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux
Pull MIPS updates from Thomas Bogendoerfer:
- added support for Huawei B593u-12
- added support for virt board aligned to QEMU MIPS virt board
- added support for doing DMA coherence on a per device base
- reworked handling of RALINK SoCs
- cleanup for Loongon64 barriers
- removed deprecated support for MIPS_CMP SMP handling method
- removed support Sibyte CARMEL and CHRINE boards
- cleanups and fixes
* tag 'mips_6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: (59 commits)
MIPS: uprobes: Restore thread.trap_nr
MIPS: Don't clear _PAGE_SPECIAL in _PAGE_CHG_MASK
MIPS: Sink body of check_bugs_early() into its only call site
MIPS: Mark check_bugs() as __init
Revert "MIPS: generic: Enable all CPUs supported by virt board in Kconfig"
MIPS: octeon_switch: Remove duplicated labels
MIPS: loongson2ef: Add missing break in cs5536_isa
MIPS: Remove set_swbp() in uprobes.c
MIPS: Use def_bool y for ARCH_SUPPORTS_UPROBES
MIPS: fw: Allow firmware to pass a empty env
MIPS: Remove deprecated CONFIG_MIPS_CMP
MIPS: lantiq: remove unused function declaration
MIPS: Drop unused positional parameter in local_irq_{dis,en}able
MIPS: mm: Remove local_cache_flush_page
MIPS: Remove no longer used ide.h
MIPS: mm: Remove unused *cache_page_indexed flush functions
MIPS: generic: Enable all CPUs supported by virt board in Kconfig
MIPS: Add board config for virt board
MIPS: Octeon: Disable CVMSEG by default on other platforms
MIPS: Loongson: Don't select platform features with CPU
...
Diffstat (limited to 'arch/mips/mm/cache.c')
| -rw-r--r-- | arch/mips/mm/cache.c | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/arch/mips/mm/cache.c b/arch/mips/mm/cache.c index 11b3e7ddafd5..d21cf8c6cf6c 100644 --- a/arch/mips/mm/cache.c +++ b/arch/mips/mm/cache.c @@ -17,6 +17,7 @@ #include <linux/highmem.h> #include <linux/pagemap.h> +#include <asm/bcache.h> #include <asm/cacheflush.h> #include <asm/processor.h> #include <asm/cpu.h> @@ -48,14 +49,30 @@ void (*__flush_kernel_vmap_range)(unsigned long vaddr, int size); EXPORT_SYMBOL_GPL(__flush_kernel_vmap_range); /* MIPS specific cache operations */ -void (*local_flush_data_cache_page)(void * addr); void (*flush_data_cache_page)(unsigned long addr); void (*flush_icache_all)(void); -EXPORT_SYMBOL_GPL(local_flush_data_cache_page); EXPORT_SYMBOL(flush_data_cache_page); EXPORT_SYMBOL(flush_icache_all); +/* + * Dummy cache handling routine + */ + +void cache_noop(void) {} + +#ifdef CONFIG_BOARD_SCACHE + +static struct bcache_ops no_sc_ops = { + .bc_enable = (void *)cache_noop, + .bc_disable = (void *)cache_noop, + .bc_wback_inv = (void *)cache_noop, + .bc_inv = (void *)cache_noop +}; + +struct bcache_ops *bcops = &no_sc_ops; +#endif + #ifdef CONFIG_DMA_NONCOHERENT /* DMA cache operations. */ |