diff options
Diffstat (limited to 'arch/mips/include/asm/highmem.h')
| -rw-r--r-- | arch/mips/include/asm/highmem.h | 33 |
1 files changed, 15 insertions, 18 deletions
diff --git a/arch/mips/include/asm/highmem.h b/arch/mips/include/asm/highmem.h index b0dd0c84df70..92a380210017 100644 --- a/arch/mips/include/asm/highmem.h +++ b/arch/mips/include/asm/highmem.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ /* * highmem.h: virtual kernel memory mappings for high memory * @@ -19,13 +20,11 @@ #ifdef __KERNEL__ -#include <linux/init.h> +#include <linux/bug.h> #include <linux/interrupt.h> #include <linux/uaccess.h> -#include <asm/kmap_types.h> - -/* undef for production */ -#define HIGHMEM_DEBUG 1 +#include <asm/cpu-features.h> +#include <asm/kmap_size.h> /* declarations for highmem.c */ extern unsigned long highstart_pfn, highend_pfn; @@ -37,26 +36,24 @@ extern pte_t *pkmap_page_table; * easily, subsequent pte tables have to be allocated in one physical * chunk of RAM. */ +#if defined(CONFIG_PHYS_ADDR_T_64BIT) || defined(CONFIG_MIPS_HUGE_TLB_SUPPORT) +#define LAST_PKMAP 512 +#else #define LAST_PKMAP 1024 +#endif + #define LAST_PKMAP_MASK (LAST_PKMAP-1) #define PKMAP_NR(virt) ((virt-PKMAP_BASE) >> PAGE_SHIFT) #define PKMAP_ADDR(nr) (PKMAP_BASE + ((nr) << PAGE_SHIFT)) -extern void * kmap_high(struct page *page); -extern void kunmap_high(struct page *page); - -extern void *kmap(struct page *page); -extern void kunmap(struct page *page); -extern void *kmap_atomic(struct page *page); -extern void __kunmap_atomic(void *kvaddr); -extern void *kmap_atomic_pfn(unsigned long pfn); -extern struct page *kmap_atomic_to_page(void *ptr); - -#define flush_cache_kmaps() flush_cache_all() +#define ARCH_HAS_KMAP_FLUSH_TLB +extern void kmap_flush_tlb(unsigned long addr); -extern void kmap_init(void); +#define flush_cache_kmaps() BUG_ON(cpu_has_dc_aliases) -#define kmap_prot PAGE_KERNEL +#define arch_kmap_local_set_pte(mm, vaddr, ptep, ptev) set_pte(ptep, ptev) +#define arch_kmap_local_post_map(vaddr, pteval) local_flush_tlb_one(vaddr) +#define arch_kmap_local_post_unmap(vaddr) local_flush_tlb_one(vaddr) #endif /* __KERNEL__ */ |