From: Franck Bui-Huu <fbuihuu@xxxxxxxxx>
This code was needed only by Jaguar ATX.
Signed-off-by: Franck Bui-Huu <fbuihuu@xxxxxxxxx>
---
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, 0 insertions(+), 56 deletions(-)
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 28caf80..77a1ef0 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -885,11 +885,6 @@ 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 675502a..10dd2af 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 2d1c2c0..4c80528 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 f8c8182..4d6bd5c 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
- * <linux/highmem.h>
- */
-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 d3fbd83..5c3239d 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 <asm-generic/memory_model.h>
#include <asm-generic/page.h>
--
1.5.1.3
