diff options
Diffstat (limited to 'include/asm-sh')
| -rw-r--r-- | include/asm-sh/addrspace.h | 6 | ||||
| -rw-r--r-- | include/asm-sh/cpu-sh4/mmu_context.h | 8 | ||||
| -rw-r--r-- | include/asm-sh/io.h | 16 | ||||
| -rw-r--r-- | include/asm-sh/page.h | 50 | ||||
| -rw-r--r-- | include/asm-sh/pgtable.h | 8 | ||||
| -rw-r--r-- | include/asm-sh/pgtable_32.h | 2 | ||||
| -rw-r--r-- | include/asm-sh/scatterlist.h | 3 |
7 files changed, 60 insertions, 33 deletions
diff --git a/include/asm-sh/addrspace.h b/include/asm-sh/addrspace.h index e7f2deb..fa544fc 100644 --- a/include/asm-sh/addrspace.h +++ b/include/asm-sh/addrspace.h @@ -31,6 +31,7 @@ /* Returns the physical address of a PnSEG (n=1,2) address */ #define PHYSADDR(a) (((unsigned long)(a)) & 0x1fffffff) +#ifdef CONFIG_29BIT /* * Map an address to a certain privileged segment */ @@ -42,8 +43,11 @@ ((__typeof__(a))(((unsigned long)(a) & 0x1fffffff) | P3SEG)) #define P4SEGADDR(a) \ ((__typeof__(a))(((unsigned long)(a) & 0x1fffffff) | P4SEG)) - +#endif /* 29BIT */ #endif /* P1SEG */ +/* Check if an address can be reached in 29 bits */ +#define IS_29BIT(a) (((unsigned long)(a)) < 0x20000000) + #endif /* __KERNEL__ */ #endif /* __ASM_SH_ADDRSPACE_H */ diff --git a/include/asm-sh/cpu-sh4/mmu_context.h b/include/asm-sh/cpu-sh4/mmu_context.h index fdd56e3..9ea8eb2 100644 --- a/include/asm-sh/cpu-sh4/mmu_context.h +++ b/include/asm-sh/cpu-sh4/mmu_context.h @@ -30,6 +30,12 @@ #define MMUCR_ME (0) #endif +#if defined(CONFIG_32BIT) && defined(CONFIG_CPU_SUBTYPE_ST40) +#define MMUCR_SE (1 << 4) +#else +#define MMUCR_SE (0) +#endif + #ifdef CONFIG_SH_STORE_QUEUES #define MMUCR_SQMD (1 << 9) #else @@ -37,7 +43,7 @@ #endif #define MMU_NTLB_ENTRIES 64 -#define MMU_CONTROL_INIT (0x05|MMUCR_SQMD|MMUCR_ME) +#define MMU_CONTROL_INIT (0x05|MMUCR_SQMD|MMUCR_ME|MMUCR_SE) #define MMU_ITLB_DATA_ARRAY 0xF3000000 #define MMU_UTLB_DATA_ARRAY 0xF7000000 diff --git a/include/asm-sh/io.h b/include/asm-sh/io.h index a4e5f55..94900c0 100644 --- a/include/asm-sh/io.h +++ b/include/asm-sh/io.h @@ -273,23 +273,9 @@ extern void onchip_unmap(unsigned long vaddr); #if !defined(CONFIG_MMU) #define virt_to_phys(address) ((unsigned long)(address)) #define phys_to_virt(address) ((void *)(address)) -#elif defined(CONFIG_SUPERH64) +#else #define virt_to_phys(address) (__pa(address)) #define phys_to_virt(address) (__va(address)) -#else -/* - * Change virtual addresses to physical addresses and vv. - * These are trivial on the 1:1 Linux/SuperH mapping - */ -static inline unsigned long virt_to_phys(volatile void *address) -{ - return PHYSADDR(address); -} - -static inline void *phys_to_virt(unsigned long address) -{ - return (void *)P1SEGADDR(address); -} #endif /* diff --git a/include/asm-sh/page.h b/include/asm-sh/page.h index bff635a..002e64a 100644 --- a/include/asm-sh/page.h +++ b/include/asm-sh/page.h @@ -5,6 +5,8 @@ * Copyright (C) 1999 Niibe Yutaka */ +#include <linux/const.h> + #ifdef __KERNEL__ /* PAGE_SHIFT determines the page size */ @@ -18,15 +20,13 @@ # error "Bogus kernel page size?" #endif -#ifdef __ASSEMBLY__ -#define PAGE_SIZE (1 << PAGE_SHIFT) -#else -#define PAGE_SIZE (1UL << PAGE_SHIFT) -#endif - +#define PAGE_SIZE (_AC(1, UL) << PAGE_SHIFT) #define PAGE_MASK (~(PAGE_SIZE-1)) #define PTE_MASK PAGE_MASK +/* to align the pointer to the (next) page boundary */ +#define PAGE_ALIGN(addr) (((addr)+PAGE_SIZE-1)&PAGE_MASK) + #if defined(CONFIG_HUGETLB_PAGE_SIZE_64K) #define HPAGE_SHIFT 16 #elif defined(CONFIG_HUGETLB_PAGE_SIZE_256K) @@ -104,20 +104,44 @@ typedef struct { unsigned long pgd; } pgd_t; #endif /* !__ASSEMBLY__ */ -/* to align the pointer to the (next) page boundary */ -#define PAGE_ALIGN(addr) (((addr)+PAGE_SIZE-1)&PAGE_MASK) - +/* + * __MEMORY_START and SIZE are the physical addresses and size of RAM. + */ #define __MEMORY_START CONFIG_MEMORY_START #define __MEMORY_SIZE CONFIG_MEMORY_SIZE +/* + * PAGE_OFFSET is the virtual address of the start of kernel address + * space. + */ #define PAGE_OFFSET CONFIG_PAGE_OFFSET -#define __pa(x) ((unsigned long)(x)-PAGE_OFFSET) -#define __va(x) ((void *)((unsigned long)(x)+PAGE_OFFSET)) -#define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT) +/* + * Virtual to physical RAM address translation. + * + * In 29 bit mode, the physical offset of RAM from address 0 is visible in + * the kernel virtual address space, and thus we don't have to take + * this into account when translating. However in 32 bit mode this offset + * is not visible (it is part of the PMB mapping) and so needs to be + * added or subtracted as required. + */ +#ifdef CONFIG_32BIT +#define __pa(x) ((unsigned long)(x)-PAGE_OFFSET+__MEMORY_START) +#define __va(x) ((void *)((unsigned long)(x)+PAGE_OFFSET-__MEMORY_START)) +#else +#define __pa(x) ((unsigned long)(x)-PAGE_OFFSET) +#define __va(x) ((void *)((unsigned long)(x)+PAGE_OFFSET)) +#endif + +#define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT) #define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT) -/* PFN start number, because of __MEMORY_START */ +/* + * PFN = physical frame number (ie PFN 0 == physical address 0) + * PFN_START is the PFN of the first page of RAM. By defining this we + * don't have struct page entries for the portion of address space + * between physical address 0 and the start of RAM. + */ #define PFN_START (__MEMORY_START >> PAGE_SHIFT) #define ARCH_PFN_OFFSET (PFN_START) #define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT) diff --git a/include/asm-sh/pgtable.h b/include/asm-sh/pgtable.h index b4d7561..3df90f0 100644 --- a/include/asm-sh/pgtable.h +++ b/include/asm-sh/pgtable.h @@ -69,7 +69,13 @@ extern unsigned long empty_zero_page[PAGE_SIZE / sizeof(unsigned long)]; #define USER_PTRS_PER_PGD (TASK_SIZE/PGDIR_SIZE) #define FIRST_USER_ADDRESS 0 -#define PTE_PHYS_MASK (0x20000000 - PAGE_SIZE) +#ifdef CONFIG_32BIT +#define PHYS_ADDR_MASK 0xffffffff +#else +#define PHYS_ADDR_MASK 0x1fffffff +#endif + +#define PTE_PHYS_MASK (PHYS_ADDR_MASK & PAGE_MASK) #ifdef CONFIG_SUPERH32 #define VMALLOC_START (P3SEG) diff --git a/include/asm-sh/pgtable_32.h b/include/asm-sh/pgtable_32.h index 7030360..7efc954 100644 --- a/include/asm-sh/pgtable_32.h +++ b/include/asm-sh/pgtable_32.h @@ -98,7 +98,7 @@ #define _PAGE_CLEAR_FLAGS (_PAGE_PROTNONE | _PAGE_ACCESSED | _PAGE_FILE) #endif -#define _PAGE_FLAGS_HARDWARE_MASK (0x1fffffff & ~(_PAGE_CLEAR_FLAGS)) +#define _PAGE_FLAGS_HARDWARE_MASK (PHYS_ADDR_MASK & ~(_PAGE_CLEAR_FLAGS)) /* Hardware flags, page size encoding */ #if defined(CONFIG_X2TLB) diff --git a/include/asm-sh/scatterlist.h b/include/asm-sh/scatterlist.h index a7d0d18..35ef9c3 100644 --- a/include/asm-sh/scatterlist.h +++ b/include/asm-sh/scatterlist.h @@ -1,6 +1,7 @@ #ifndef __ASM_SH_SCATTERLIST_H #define __ASM_SH_SCATTERLIST_H +#include <asm/pgtable.h> #include <asm/types.h> struct scatterlist { @@ -13,7 +14,7 @@ struct scatterlist { unsigned int length; }; -#define ISA_DMA_THRESHOLD (0x1fffffff) +#define ISA_DMA_THRESHOLD PHYS_ADDR_MASK /* These macros should be used after a pci_map_sg call has been done * to get bus addresses of each of the SG entries and their lengths. |
