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authorFranck Bui-Huu <fbuihuu@gmail.com>2007-05-07 12:01:53 -0400
committerRalf Baechle <ralf@linux-mips.org>2007-05-11 09:28:31 -0400
commit599ca0fb639ba843da46c3ad1a53590763539750 (patch)
treef521a5ca50d70dda6a7fe42f5d5a9f1ef370c80b /include/asm-mips
parentbef964e55ac128b1a6894c68171d0b22263449f8 (diff)
[MIPS] Remove LIMITED_DMA support
This code was needed only by Jaguar ATX. Signed-off-by: Franck Bui-Huu <fbuihuu@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'include/asm-mips')
-rw-r--r--include/asm-mips/highmem.h42
-rw-r--r--include/asm-mips/page.h4
2 files changed, 0 insertions, 46 deletions
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;
48extern void * kmap_high(struct page *page); 48extern void * kmap_high(struct page *page);
49extern void kunmap_high(struct page *page); 49extern void kunmap_high(struct page *page);
50 50
51/*
52 * CONFIG_LIMITED_DMA is for systems with DMA limitations such as Momentum's
53 * Jaguar ATX. This option exploits the highmem code in the kernel so is
54 * always enabled together with CONFIG_HIGHMEM but at this time doesn't
55 * actually add highmem functionality.
56 */
57
58#ifdef CONFIG_LIMITED_DMA
59
60/*
61 * These are the default functions for the no-highmem case from
62 * <linux/highmem.h>
63 */
64static inline void *kmap(struct page *page)
65{
66 might_sleep();
67 return page_address(page);
68}
69
70#define kunmap(page) do { (void) (page); } while (0)
71
72static inline void *kmap_atomic(struct page *page, enum km_type type)
73{
74 pagefault_disable();
75 return page_address(page);
76}
77
78static inline void kunmap_atomic(void *kvaddr, enum km_type type)
79{
80 pagefault_enable();
81}
82
83#define kmap_atomic_pfn(pfn, idx) kmap_atomic(pfn_to_page(pfn), (idx))
84
85#define kmap_atomic_to_page(ptr) virt_to_page(ptr)
86
87#define flush_cache_kmaps() do { } while (0)
88
89#else /* LIMITED_DMA */
90
91extern void *__kmap(struct page *page); 51extern void *__kmap(struct page *page);
92extern void __kunmap(struct page *page); 52extern void __kunmap(struct page *page);
93extern void *__kmap_atomic(struct page *page, enum km_type type); 53extern void *__kmap_atomic(struct page *page, enum km_type type);
@@ -103,8 +63,6 @@ extern struct page *__kmap_atomic_to_page(void *ptr);
103 63
104#define flush_cache_kmaps() flush_cache_all() 64#define flush_cache_kmaps() flush_cache_all()
105 65
106#endif /* LIMITED_DMA */
107
108#endif /* __KERNEL__ */ 66#endif /* __KERNEL__ */
109 67
110#endif /* _ASM_HIGHMEM_H */ 68#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;
190#define UNCAC_ADDR(addr) ((addr) - PAGE_OFFSET + UNCAC_BASE) 190#define UNCAC_ADDR(addr) ((addr) - PAGE_OFFSET + UNCAC_BASE)
191#define CAC_ADDR(addr) ((addr) - UNCAC_BASE + PAGE_OFFSET) 191#define CAC_ADDR(addr) ((addr) - UNCAC_BASE + PAGE_OFFSET)
192 192
193#ifdef CONFIG_LIMITED_DMA
194#define WANT_PAGE_VIRTUAL
195#endif
196
197#include <asm-generic/memory_model.h> 193#include <asm-generic/memory_model.h>
198#include <asm-generic/page.h> 194#include <asm-generic/page.h>
199 195