From 599ca0fb639ba843da46c3ad1a53590763539750 Mon Sep 17 00:00:00 2001 From: Franck Bui-Huu Date: Mon, 7 May 2007 18:01:53 +0200 Subject: [PATCH] [MIPS] Remove LIMITED_DMA support This code was needed only by Jaguar ATX. Signed-off-by: Franck Bui-Huu Signed-off-by: Ralf Baechle --- arch/mips/Kconfig | 5 ----- arch/mips/mm/highmem.c | 2 -- arch/mips/mm/init.c | 3 --- include/asm-mips/highmem.h | 42 -------------------------------------- include/asm-mips/page.h | 4 ---- 5 files changed, 56 deletions(-) diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index 515c5a698040..fa2c44388fdb 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -883,11 +883,6 @@ config GENERIC_ISA_DMA config I8259 bool -config LIMITED_DMA - bool - select HIGHMEM - select SYS_SUPPORTS_HIGHMEM - config MIPS_BONITO64 bool diff --git a/arch/mips/mm/highmem.c b/arch/mips/mm/highmem.c index 675502ada5a2..10dd2af2343b 100644 --- a/arch/mips/mm/highmem.c +++ b/arch/mips/mm/highmem.c @@ -80,7 +80,6 @@ void __kunmap_atomic(void *kvaddr, enum km_type type) pagefault_enable(); } -#ifndef CONFIG_LIMITED_DMA /* * This is the same as kmap_atomic() but can map memory that doesn't * have a struct page associated with it. @@ -99,7 +98,6 @@ void *kmap_atomic_pfn(unsigned long pfn, enum km_type type) return (void*) vaddr; } -#endif /* CONFIG_LIMITED_DMA */ struct page *__kmap_atomic_to_page(void *ptr) { diff --git a/arch/mips/mm/init.c b/arch/mips/mm/init.c index 2d1c2c024822..4c80528deadd 100644 --- a/arch/mips/mm/init.c +++ b/arch/mips/mm/init.c @@ -424,9 +424,6 @@ void __init mem_init(void) continue; } ClearPageReserved(page); -#ifdef CONFIG_LIMITED_DMA - set_page_address(page, lowmem_page_address(page)); -#endif init_page_count(page); __free_page(page); totalhigh_pages++; diff --git a/include/asm-mips/highmem.h b/include/asm-mips/highmem.h index f8c8182f7f2e..4d6bd5c31c7b 100644 --- a/include/asm-mips/highmem.h +++ b/include/asm-mips/highmem.h @@ -48,46 +48,6 @@ extern pte_t *pkmap_page_table; extern void * kmap_high(struct page *page); extern void kunmap_high(struct page *page); -/* - * CONFIG_LIMITED_DMA is for systems with DMA limitations such as Momentum's - * Jaguar ATX. This option exploits the highmem code in the kernel so is - * always enabled together with CONFIG_HIGHMEM but at this time doesn't - * actually add highmem functionality. - */ - -#ifdef CONFIG_LIMITED_DMA - -/* - * These are the default functions for the no-highmem case from - * - */ -static inline void *kmap(struct page *page) -{ - might_sleep(); - return page_address(page); -} - -#define kunmap(page) do { (void) (page); } while (0) - -static inline void *kmap_atomic(struct page *page, enum km_type type) -{ - pagefault_disable(); - return page_address(page); -} - -static inline void kunmap_atomic(void *kvaddr, enum km_type type) -{ - pagefault_enable(); -} - -#define kmap_atomic_pfn(pfn, idx) kmap_atomic(pfn_to_page(pfn), (idx)) - -#define kmap_atomic_to_page(ptr) virt_to_page(ptr) - -#define flush_cache_kmaps() do { } while (0) - -#else /* LIMITED_DMA */ - extern void *__kmap(struct page *page); extern void __kunmap(struct page *page); extern void *__kmap_atomic(struct page *page, enum km_type type); @@ -103,8 +63,6 @@ extern struct page *__kmap_atomic_to_page(void *ptr); #define flush_cache_kmaps() flush_cache_all() -#endif /* LIMITED_DMA */ - #endif /* __KERNEL__ */ #endif /* _ASM_HIGHMEM_H */ diff --git a/include/asm-mips/page.h b/include/asm-mips/page.h index d3fbd83ff545..5c3239dad0f2 100644 --- a/include/asm-mips/page.h +++ b/include/asm-mips/page.h @@ -190,10 +190,6 @@ typedef struct { unsigned long pgprot; } pgprot_t; #define UNCAC_ADDR(addr) ((addr) - PAGE_OFFSET + UNCAC_BASE) #define CAC_ADDR(addr) ((addr) - UNCAC_BASE + PAGE_OFFSET) -#ifdef CONFIG_LIMITED_DMA -#define WANT_PAGE_VIRTUAL -#endif - #include #include -- 2.20.1