Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932577Ab0KLSBS (ORCPT ); Fri, 12 Nov 2010 13:01:18 -0500 Received: from cam-admin0.cambridge.arm.com ([217.140.96.50]:50931 "EHLO cam-admin0.cambridge.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932493Ab0KLSBQ (ORCPT ); Fri, 12 Nov 2010 13:01:16 -0500 From: Catalin Marinas To: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: Will Deacon Subject: [PATCH v2 14/20] ARM: LPAE: use phys_addr_t instead of unsigned long for physical addresses Date: Fri, 12 Nov 2010 18:00:34 +0000 Message-Id: <1289584840-18097-15-git-send-email-catalin.marinas@arm.com> X-Mailer: git-send-email 1.7.3.2.164.g6f10c In-Reply-To: <1289584840-18097-1-git-send-email-catalin.marinas@arm.com> References: <1289584840-18097-1-git-send-email-catalin.marinas@arm.com> X-OriginalArrivalTime: 12 Nov 2010 18:00:52.0750 (UTC) FILETIME=[8BCD92E0:01CB8293] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 8739 Lines: 244 From: Will Deacon The unsigned long datatype is not sufficient for mapping physical addresses >= 4GB. This patch ensures that the phys_addr_t datatype is used to represent physical addresses which may be beyond the range of an unsigned long. The virt <-> phys macros are updated accordingly to ensure that virtual addresses can remain as they are. Signed-off-by: Will Deacon Signed-off-by: Catalin Marinas --- arch/arm/include/asm/memory.h | 17 +++++++++-------- arch/arm/include/asm/outercache.h | 14 ++++++++------ arch/arm/include/asm/pgalloc.h | 2 +- arch/arm/include/asm/pgtable.h | 2 +- arch/arm/include/asm/setup.h | 2 +- arch/arm/mm/init.c | 6 +++--- arch/arm/mm/mmu.c | 12 +++++++----- 7 files changed, 30 insertions(+), 25 deletions(-) diff --git a/arch/arm/include/asm/memory.h b/arch/arm/include/asm/memory.h index 23c2e8e..756252b 100644 --- a/arch/arm/include/asm/memory.h +++ b/arch/arm/include/asm/memory.h @@ -15,6 +15,7 @@ #include #include +#include #include #include @@ -138,15 +139,15 @@ * files. Use virt_to_phys/phys_to_virt/__pa/__va instead. */ #ifndef __virt_to_phys -#define __virt_to_phys(x) ((x) - PAGE_OFFSET + PHYS_OFFSET) -#define __phys_to_virt(x) ((x) - PHYS_OFFSET + PAGE_OFFSET) +#define __virt_to_phys(x) (((phys_addr_t)(x) - PAGE_OFFSET + PHYS_OFFSET)) +#define __phys_to_virt(x) ((unsigned long)((x) - PHYS_OFFSET + PAGE_OFFSET)) #endif /* * Convert a physical address to a Page Frame Number and back */ -#define __phys_to_pfn(paddr) ((paddr) >> PAGE_SHIFT) -#define __pfn_to_phys(pfn) ((pfn) << PAGE_SHIFT) +#define __phys_to_pfn(paddr) ((unsigned long)((paddr) >> PAGE_SHIFT)) +#define __pfn_to_phys(pfn) ((phys_addr_t)(pfn) << PAGE_SHIFT) /* * Convert a page to/from a physical address @@ -188,21 +189,21 @@ * translation for translating DMA addresses. Use the driver * DMA support - see dma-mapping.h. */ -static inline unsigned long virt_to_phys(void *x) +static inline phys_addr_t virt_to_phys(void *x) { return __virt_to_phys((unsigned long)(x)); } -static inline void *phys_to_virt(unsigned long x) +static inline void *phys_to_virt(phys_addr_t x) { - return (void *)(__phys_to_virt((unsigned long)(x))); + return (void *)(__phys_to_virt(x)); } /* * Drivers should NOT use these either. */ #define __pa(x) __virt_to_phys((unsigned long)(x)) -#define __va(x) ((void *)__phys_to_virt((unsigned long)(x))) +#define __va(x) ((void *)__phys_to_virt((phys_addr_t)(x))) #define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT) /* diff --git a/arch/arm/include/asm/outercache.h b/arch/arm/include/asm/outercache.h index fc19009..88ad892 100644 --- a/arch/arm/include/asm/outercache.h +++ b/arch/arm/include/asm/outercache.h @@ -21,6 +21,8 @@ #ifndef __ASM_OUTERCACHE_H #define __ASM_OUTERCACHE_H +#include + struct outer_cache_fns { void (*inv_range)(unsigned long, unsigned long); void (*clean_range)(unsigned long, unsigned long); @@ -37,17 +39,17 @@ struct outer_cache_fns { extern struct outer_cache_fns outer_cache; -static inline void outer_inv_range(unsigned long start, unsigned long end) +static inline void outer_inv_range(phys_addr_t start, phys_addr_t end) { if (outer_cache.inv_range) outer_cache.inv_range(start, end); } -static inline void outer_clean_range(unsigned long start, unsigned long end) +static inline void outer_clean_range(phys_addr_t start, phys_addr_t end) { if (outer_cache.clean_range) outer_cache.clean_range(start, end); } -static inline void outer_flush_range(unsigned long start, unsigned long end) +static inline void outer_flush_range(phys_addr_t start, phys_addr_t end) { if (outer_cache.flush_range) outer_cache.flush_range(start, end); @@ -73,11 +75,11 @@ static inline void outer_disable(void) #else -static inline void outer_inv_range(unsigned long start, unsigned long end) +static inline void outer_inv_range(phys_addr_t start, phys_addr_t end) { } -static inline void outer_clean_range(unsigned long start, unsigned long end) +static inline void outer_clean_range(phys_addr_t start, phys_addr_t end) { } -static inline void outer_flush_range(unsigned long start, unsigned long end) +static inline void outer_flush_range(phys_addr_t start, phys_addr_t end) { } static inline void outer_flush_all(void) { } static inline void outer_inv_all(void) { } diff --git a/arch/arm/include/asm/pgalloc.h b/arch/arm/include/asm/pgalloc.h index 64a303d..33761b8 100644 --- a/arch/arm/include/asm/pgalloc.h +++ b/arch/arm/include/asm/pgalloc.h @@ -159,7 +159,7 @@ pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmdp, pte_t *ptep) static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmdp, pgtable_t ptep) { - __pmd_populate(pmdp, page_to_pfn(ptep) << PAGE_SHIFT | _PAGE_USER_TABLE); + __pmd_populate(pmdp, page_to_phys(ptep) | _PAGE_USER_TABLE); } #define pmd_pgtable(pmd) pmd_page(pmd) diff --git a/arch/arm/include/asm/pgtable.h b/arch/arm/include/asm/pgtable.h index 41236f0..bfbfcbd 100644 --- a/arch/arm/include/asm/pgtable.h +++ b/arch/arm/include/asm/pgtable.h @@ -130,7 +130,7 @@ extern struct page *empty_zero_page; #define pte_pfn(pte) (pte_val(pte) >> PAGE_SHIFT) #endif -#define pfn_pte(pfn,prot) (__pte(((pfn) << PAGE_SHIFT) | pgprot_val(prot))) +#define pfn_pte(pfn,prot) (__pte(((phys_addr_t)(pfn) << PAGE_SHIFT) | pgprot_val(prot))) #define pte_none(pte) (!pte_val(pte)) #define pte_clear(mm,addr,ptep) set_pte_ext(ptep, __pte(0), 0) diff --git a/arch/arm/include/asm/setup.h b/arch/arm/include/asm/setup.h index f1e5a9b..5092118 100644 --- a/arch/arm/include/asm/setup.h +++ b/arch/arm/include/asm/setup.h @@ -199,7 +199,7 @@ static struct tagtable __tagtable_##fn __tag = { tag, fn } #endif struct membank { - unsigned long start; + phys_addr_t start; unsigned long size; unsigned int highmem; }; diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c index 5164069..14a00a1 100644 --- a/arch/arm/mm/init.c +++ b/arch/arm/mm/init.c @@ -344,7 +344,7 @@ void __init bootmem_init(void) */ arm_bootmem_free(min, max_low, max_high); - high_memory = __va((max_low << PAGE_SHIFT) - 1) + 1; + high_memory = __va(((phys_addr_t)max_low << PAGE_SHIFT) - 1) + 1; /* * This doesn't seem to be used by the Linux memory manager any @@ -392,8 +392,8 @@ free_memmap(unsigned long start_pfn, unsigned long end_pfn) * Convert to physical addresses, and * round start upwards and end downwards. */ - pg = PAGE_ALIGN(__pa(start_pg)); - pgend = __pa(end_pg) & PAGE_MASK; + pg = (unsigned long)PAGE_ALIGN(__pa(start_pg)); + pgend = (unsigned long)__pa(end_pg) & PAGE_MASK; /* * If there are free pages between these, diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c index 3784acc..b03e431 100644 --- a/arch/arm/mm/mmu.c +++ b/arch/arm/mm/mmu.c @@ -573,7 +573,7 @@ static void __init alloc_init_pte(pmd_t *pmd, unsigned long addr, } static void __init alloc_init_section(pgd_t *pgd, unsigned long addr, - unsigned long end, unsigned long phys, + unsigned long end, phys_addr_t phys, const struct mem_type *type) { pmd_t *pmd = pmd_offset(pgd, addr); @@ -609,11 +609,12 @@ static void __init alloc_init_section(pgd_t *pgd, unsigned long addr, static void __init create_36bit_mapping(struct map_desc *md, const struct mem_type *type) { - unsigned long phys, addr, length, end; + unsigned long addr, length, end; + phys_addr_t phys; pgd_t *pgd; addr = md->virtual; - phys = (unsigned long)__pfn_to_phys(md->pfn); + phys = __pfn_to_phys(md->pfn); length = PAGE_ALIGN(md->length); if (!(cpu_architecture() >= CPU_ARCH_ARMv6 || cpu_is_xsc3())) { @@ -674,7 +675,8 @@ static void __init create_36bit_mapping(struct map_desc *md, */ static void __init create_mapping(struct map_desc *md) { - unsigned long phys, addr, length, end; + unsigned long addr, length, end; + phys_addr_t phys; const struct mem_type *type; pgd_t *pgd; @@ -705,7 +707,7 @@ static void __init create_mapping(struct map_desc *md) #endif addr = md->virtual & PAGE_MASK; - phys = (unsigned long)__pfn_to_phys(md->pfn); + phys = __pfn_to_phys(md->pfn); length = PAGE_ALIGN(md->length + (md->virtual & ~PAGE_MASK)); if (type->prot_l1 == 0 && ((addr | phys | length) & ~SECTION_MASK)) { -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/