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Diffstat (limited to 'include/asm-frv/highmem.h')
| -rw-r--r-- | include/asm-frv/highmem.h | 182 |
1 files changed, 0 insertions, 182 deletions
diff --git a/include/asm-frv/highmem.h b/include/asm-frv/highmem.h deleted file mode 100644 index 68e4677fb9e..00000000000 --- a/include/asm-frv/highmem.h +++ /dev/null @@ -1,182 +0,0 @@ -/* highmem.h: virtual kernel memory mappings for high memory - * - * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved. - * Written by David Howells (dhowells@redhat.com) - * - Derived from include/asm-i386/highmem.h - * - * See Documentation/frv/mmu-layout.txt for more information. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - */ - -#ifndef _ASM_HIGHMEM_H -#define _ASM_HIGHMEM_H - -#ifdef __KERNEL__ - -#include <linux/init.h> -#include <linux/highmem.h> -#include <asm/mem-layout.h> -#include <asm/spr-regs.h> -#include <asm/mb-regs.h> - -#define NR_TLB_LINES 64 /* number of lines in the TLB */ - -#ifndef __ASSEMBLY__ - -#include <linux/interrupt.h> -#include <asm/kmap_types.h> -#include <asm/pgtable.h> - -#ifdef CONFIG_DEBUG_HIGHMEM -#define HIGHMEM_DEBUG 1 -#else -#define HIGHMEM_DEBUG 0 -#endif - -/* declarations for highmem.c */ -extern unsigned long highstart_pfn, highend_pfn; - -#define kmap_prot PAGE_KERNEL -#define kmap_pte ______kmap_pte_in_TLB -extern pte_t *pkmap_page_table; - -#define flush_cache_kmaps() do { } while (0) - -/* - * Right now we initialize only a single pte table. It can be extended - * easily, subsequent pte tables have to be allocated in one physical - * chunk of RAM. - */ -#define LAST_PKMAP PTRS_PER_PTE -#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 struct page *kmap_atomic_to_page(void *ptr); - -#endif /* !__ASSEMBLY__ */ - -/* - * The use of kmap_atomic/kunmap_atomic is discouraged - kmap/kunmap - * gives a more generic (and caching) interface. But kmap_atomic can - * be used in IRQ contexts, so in some (very limited) cases we need - * it. - */ -#define KMAP_ATOMIC_CACHE_DAMR 8 - -#ifndef __ASSEMBLY__ - -#define __kmap_atomic_primary(type, paddr, ampr) \ -({ \ - unsigned long damlr, dampr; \ - \ - dampr = paddr | xAMPRx_L | xAMPRx_M | xAMPRx_S | xAMPRx_SS_16Kb | xAMPRx_V; \ - \ - if (type != __KM_CACHE) \ - asm volatile("movgs %0,dampr"#ampr :: "r"(dampr) : "memory"); \ - else \ - asm volatile("movgs %0,iampr"#ampr"\n" \ - "movgs %0,dampr"#ampr"\n" \ - :: "r"(dampr) : "memory" \ - ); \ - \ - asm("movsg damlr"#ampr",%0" : "=r"(damlr)); \ - \ - /*printk("DAMR"#ampr": PRIM sl=%d L=%08lx P=%08lx\n", type, damlr, dampr);*/ \ - \ - (void *) damlr; \ -}) - -#define __kmap_atomic_secondary(slot, paddr) \ -({ \ - unsigned long damlr = KMAP_ATOMIC_SECONDARY_FRAME + (slot) * PAGE_SIZE; \ - unsigned long dampr = paddr | xAMPRx_L | xAMPRx_M | xAMPRx_S | xAMPRx_SS_16Kb | xAMPRx_V; \ - \ - asm volatile("movgs %0,tplr \n" \ - "movgs %1,tppr \n" \ - "tlbpr %0,gr0,#2,#1" \ - : : "r"(damlr), "r"(dampr) : "memory"); \ - \ - /*printk("TLB: SECN sl=%d L=%08lx P=%08lx\n", slot, damlr, dampr);*/ \ - \ - (void *) damlr; \ -}) - -static inline void *kmap_atomic(struct page *page, enum km_type type) -{ - unsigned long paddr; - - pagefault_disable(); - debug_kmap_atomic(type); - paddr = page_to_phys(page); - - switch (type) { - case 0: return __kmap_atomic_primary(0, paddr, 2); - case 1: return __kmap_atomic_primary(1, paddr, 3); - case 2: return __kmap_atomic_primary(2, paddr, 4); - case 3: return __kmap_atomic_primary(3, paddr, 5); - case 4: return __kmap_atomic_primary(4, paddr, 6); - case 5: return __kmap_atomic_primary(5, paddr, 7); - case 6: return __kmap_atomic_primary(6, paddr, 8); - case 7: return __kmap_atomic_primary(7, paddr, 9); - case 8: return __kmap_atomic_primary(8, paddr, 10); - - case 9 ... 9 + NR_TLB_LINES - 1: - return __kmap_atomic_secondary(type - 9, paddr); - - default: - BUG(); - return NULL; - } -} - -#define __kunmap_atomic_primary(type, ampr) \ -do { \ - asm volatile("movgs gr0,dampr"#ampr"\n" ::: "memory"); \ - if (type == __KM_CACHE) \ - asm volatile("movgs gr0,iampr"#ampr"\n" ::: "memory"); \ -} while(0) - -#define __kunmap_atomic_secondary(slot, vaddr) \ -do { \ - asm volatile("tlbpr %0,gr0,#4,#1" : : "r"(vaddr) : "memory"); \ -} while(0) - -static inline void kunmap_atomic(void *kvaddr, enum km_type type) -{ - switch (type) { - case 0: __kunmap_atomic_primary(0, 2); break; - case 1: __kunmap_atomic_primary(1, 3); break; - case 2: __kunmap_atomic_primary(2, 4); break; - case 3: __kunmap_atomic_primary(3, 5); break; - case 4: __kunmap_atomic_primary(4, 6); break; - case 5: __kunmap_atomic_primary(5, 7); break; - case 6: __kunmap_atomic_primary(6, 8); break; - case 7: __kunmap_atomic_primary(7, 9); break; - case 8: __kunmap_atomic_primary(8, 10); break; - - case 9 ... 9 + NR_TLB_LINES - 1: - __kunmap_atomic_secondary(type - 9, kvaddr); - break; - - default: - BUG(); - } - pagefault_enable(); -} - -#endif /* !__ASSEMBLY__ */ - -#endif /* __KERNEL__ */ - -#endif /* _ASM_HIGHMEM_H */ |