From 801f92ad5a0c630646f6746f3ed1663fcab185d1 Mon Sep 17 00:00:00 2001 From: Haavard Skinnemoen Date: Sat, 30 Sep 2006 23:29:15 -0700 Subject: [PATCH] Generic ioremap_page_range: alpha conversion Convert Alpha to use generic ioremap_page_range() by turning __alpha_remap_area_pages() into an inline wrapper around ioremap_page_range(). Signed-off-by: Haavard Skinnemoen Cc: Richard Henderson Cc: Ivan Kokshaysky Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/alpha/kernel/proto.h | 15 +++++++-- arch/alpha/mm/Makefile | 2 +- arch/alpha/mm/remap.c | 86 ----------------------------------------------- 3 files changed, 13 insertions(+), 90 deletions(-) delete mode 100644 arch/alpha/mm/remap.c diff --git a/arch/alpha/kernel/proto.h b/arch/alpha/kernel/proto.h index 2a6e3da8144f..21f71287b6f5 100644 --- a/arch/alpha/kernel/proto.h +++ b/arch/alpha/kernel/proto.h @@ -1,5 +1,7 @@ #include +#include +#include /* Prototypes of functions used across modules here in this directory. */ @@ -181,9 +183,16 @@ extern void titan_dispatch_irqs(u64, struct pt_regs *); extern void switch_to_system_map(void); extern void srm_paging_stop(void); -/* ../mm/remap.c */ -extern int __alpha_remap_area_pages(unsigned long, unsigned long, - unsigned long, unsigned long); +static inline int +__alpha_remap_area_pages(unsigned long address, unsigned long phys_addr, + unsigned long size, unsigned long flags) +{ + pgprot_t prot; + + prot = __pgprot(_PAGE_VALID | _PAGE_ASM | _PAGE_KRE + | _PAGE_KWE | flags); + return ioremap_page_range(address, address + size, phys_addr, prot); +} /* irq.c */ diff --git a/arch/alpha/mm/Makefile b/arch/alpha/mm/Makefile index 6edd9a09ea4f..09399c5386cb 100644 --- a/arch/alpha/mm/Makefile +++ b/arch/alpha/mm/Makefile @@ -4,6 +4,6 @@ EXTRA_CFLAGS := -Werror -obj-y := init.o fault.o extable.o remap.o +obj-y := init.o fault.o extable.o obj-$(CONFIG_DISCONTIGMEM) += numa.o diff --git a/arch/alpha/mm/remap.c b/arch/alpha/mm/remap.c deleted file mode 100644 index a78356c3ead5..000000000000 --- a/arch/alpha/mm/remap.c +++ /dev/null @@ -1,86 +0,0 @@ -#include -#include -#include - -static inline void -remap_area_pte(pte_t * pte, unsigned long address, unsigned long size, - unsigned long phys_addr, unsigned long flags) -{ - unsigned long end; - unsigned long pfn; - - address &= ~PMD_MASK; - end = address + size; - if (end > PMD_SIZE) - end = PMD_SIZE; - if (address >= end) - BUG(); - pfn = phys_addr >> PAGE_SHIFT; - do { - if (!pte_none(*pte)) { - printk("remap_area_pte: page already exists\n"); - BUG(); - } - set_pte(pte, pfn_pte(pfn, - __pgprot(_PAGE_VALID | _PAGE_ASM | - _PAGE_KRE | _PAGE_KWE | flags))); - address += PAGE_SIZE; - pfn++; - pte++; - } while (address && (address < end)); -} - -static inline int -remap_area_pmd(pmd_t * pmd, unsigned long address, unsigned long size, - unsigned long phys_addr, unsigned long flags) -{ - unsigned long end; - - address &= ~PGDIR_MASK; - end = address + size; - if (end > PGDIR_SIZE) - end = PGDIR_SIZE; - phys_addr -= address; - if (address >= end) - BUG(); - do { - pte_t * pte = pte_alloc_kernel(pmd, address); - if (!pte) - return -ENOMEM; - remap_area_pte(pte, address, end - address, - address + phys_addr, flags); - address = (address + PMD_SIZE) & PMD_MASK; - pmd++; - } while (address && (address < end)); - return 0; -} - -int -__alpha_remap_area_pages(unsigned long address, unsigned long phys_addr, - unsigned long size, unsigned long flags) -{ - pgd_t * dir; - int error = 0; - unsigned long end = address + size; - - phys_addr -= address; - dir = pgd_offset(&init_mm, address); - flush_cache_all(); - if (address >= end) - BUG(); - do { - pmd_t *pmd; - pmd = pmd_alloc(&init_mm, dir, address); - error = -ENOMEM; - if (!pmd) - break; - if (remap_area_pmd(pmd, address, end - address, - phys_addr + address, flags)) - break; - error = 0; - address = (address + PGDIR_SIZE) & PGDIR_MASK; - dir++; - } while (address && (address < end)); - return error; -} - -- cgit v1.2.3