From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from nat-132.atmel.no ([80.232.32.132]:35063 "EHLO relay.atmel.no") by vger.kernel.org with ESMTP id S964808AbWHHMXW (ORCPT ); Tue, 8 Aug 2006 08:23:22 -0400 From: Haavard Skinnemoen Subject: [PATCH 8/13] Generic ioremap_page_range: mips conversion Reply-To: Haavard Skinnemoen Date: Tue, 08 Aug 2006 14:23:10 +0200 Message-Id: <11550397963281-git-send-email-hskinnemoen@atmel.com> In-Reply-To: <1155039796529-git-send-email-hskinnemoen@atmel.com> References: <11550397951750-git-send-email-hskinnemoen@atmel.com> <11550397954098-git-send-email-hskinnemoen@atmel.com> <11550397954093-git-send-email-hskinnemoen@atmel.com> <11550397963310-git-send-email-hskinnemoen@atmel.com> <11550397962723-git-send-email-hskinnemoen@atmel.com> <1155039796165-git-send-email-hskinnemoen@atmel.com> <11550397964177-git-send-email-hskinnemoen@atmel.com> <1155039796529-git-send-email-hskinnemoen@atmel.com> Sender: linux-arch-owner@vger.kernel.org To: linux-arch@vger.kernel.org Cc: Haavard Skinnemoen List-ID: Convert MIPS to use generic ioremap_page_range() Signed-off-by: Haavard Skinnemoen --- arch/mips/mm/ioremap.c | 95 ++++-------------------------------------------- 1 files changed, 7 insertions(+), 88 deletions(-) diff --git a/arch/mips/mm/ioremap.c b/arch/mips/mm/ioremap.c index 3101d1d..cac79ae 100644 --- a/arch/mips/mm/ioremap.c +++ b/arch/mips/mm/ioremap.c @@ -11,93 +11,7 @@ #include #include #include -#include -#include -#include - -static inline void remap_area_pte(pte_t * pte, unsigned long address, - phys_t size, phys_t phys_addr, unsigned long flags) -{ - phys_t end; - unsigned long pfn; - pgprot_t pgprot = __pgprot(_PAGE_GLOBAL | _PAGE_PRESENT | __READABLE - | __WRITEABLE | flags); - - 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)); - address += PAGE_SIZE; - pfn++; - pte++; - } while (address && (address < end)); -} - -static inline int remap_area_pmd(pmd_t * pmd, unsigned long address, - phys_t size, phys_t phys_addr, unsigned long flags) -{ - phys_t 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; -} - -static int remap_area_pages(unsigned long address, phys_t phys_addr, - phys_t size, unsigned long flags) -{ - int error; - pgd_t * dir; - unsigned long end = address + size; - - phys_addr -= address; - dir = pgd_offset(&init_mm, address); - flush_cache_all(); - if (address >= end) - BUG(); - do { - pud_t *pud; - pmd_t *pmd; - - error = -ENOMEM; - pud = pud_alloc(&init_mm, dir, address); - if (!pud) - break; - pmd = pmd_alloc(&init_mm, pud, address); - 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)); - flush_tlb_all(); - return error; -} +#include /* * Generic mapping function (not visible outside): @@ -121,6 +35,7 @@ void __iomem * __ioremap(phys_t phys_add unsigned long offset; phys_t last_addr; void * addr; + pgprot_t pgprot; phys_addr = fixup_bigphys_addr(phys_addr, size); @@ -152,6 +67,9 @@ void __iomem * __ioremap(phys_t phys_add return NULL; } + pgprot = __pgprot(_PAGE_GLOBAL | _PAGE_PRESENT | __READABLE + | __WRITEABLE | flags); + /* * Mappings have to be page-aligned */ @@ -166,7 +84,8 @@ void __iomem * __ioremap(phys_t phys_add if (!area) return NULL; addr = area->addr; - if (remap_area_pages((unsigned long) addr, phys_addr, size, flags)) { + if (ioremap_page_range((unsigned long)addr, (unsigned long)addr + size, + phys_addr, pgprot)) { vunmap(addr); return NULL; } -- 1.4.0