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Diffstat (limited to 'arch/blackfin/mm/maccess.c')
-rw-r--r--arch/blackfin/mm/maccess.c97
1 files changed, 0 insertions, 97 deletions
diff --git a/arch/blackfin/mm/maccess.c b/arch/blackfin/mm/maccess.c
deleted file mode 100644
index e2532114c5fd..000000000000
--- a/arch/blackfin/mm/maccess.c
+++ /dev/null
@@ -1,97 +0,0 @@
-/*
- * safe read and write memory routines callable while atomic
- *
- * Copyright 2005-2008 Analog Devices Inc.
- *
- * Licensed under the GPL-2 or later.
- */
-
-#include <linux/uaccess.h>
-#include <asm/dma.h>
-
-static int validate_memory_access_address(unsigned long addr, int size)
-{
- if (size < 0 || addr == 0)
- return -EFAULT;
- return bfin_mem_access_type(addr, size);
-}
-
-long probe_kernel_read(void *dst, const void *src, size_t size)
-{
- unsigned long lsrc = (unsigned long)src;
- int mem_type;
-
- mem_type = validate_memory_access_address(lsrc, size);
- if (mem_type < 0)
- return mem_type;
-
- if (lsrc >= SYSMMR_BASE) {
- if (size == 2 && lsrc % 2 == 0) {
- u16 mmr = bfin_read16(src);
- memcpy(dst, &mmr, sizeof(mmr));
- return 0;
- } else if (size == 4 && lsrc % 4 == 0) {
- u32 mmr = bfin_read32(src);
- memcpy(dst, &mmr, sizeof(mmr));
- return 0;
- }
- } else {
- switch (mem_type) {
- case BFIN_MEM_ACCESS_CORE:
- case BFIN_MEM_ACCESS_CORE_ONLY:
- return __probe_kernel_read(dst, src, size);
- /* XXX: should support IDMA here with SMP */
- case BFIN_MEM_ACCESS_DMA:
- if (dma_memcpy(dst, src, size))
- return 0;
- break;
- case BFIN_MEM_ACCESS_ITEST:
- if (isram_memcpy(dst, src, size))
- return 0;
- break;
- }
- }
-
- return -EFAULT;
-}
-
-long probe_kernel_write(void *dst, const void *src, size_t size)
-{
- unsigned long ldst = (unsigned long)dst;
- int mem_type;
-
- mem_type = validate_memory_access_address(ldst, size);
- if (mem_type < 0)
- return mem_type;
-
- if (ldst >= SYSMMR_BASE) {
- if (size == 2 && ldst % 2 == 0) {
- u16 mmr;
- memcpy(&mmr, src, sizeof(mmr));
- bfin_write16(dst, mmr);
- return 0;
- } else if (size == 4 && ldst % 4 == 0) {
- u32 mmr;
- memcpy(&mmr, src, sizeof(mmr));
- bfin_write32(dst, mmr);
- return 0;
- }
- } else {
- switch (mem_type) {
- case BFIN_MEM_ACCESS_CORE:
- case BFIN_MEM_ACCESS_CORE_ONLY:
- return __probe_kernel_write(dst, src, size);
- /* XXX: should support IDMA here with SMP */
- case BFIN_MEM_ACCESS_DMA:
- if (dma_memcpy(dst, src, size))
- return 0;
- break;
- case BFIN_MEM_ACCESS_ITEST:
- if (isram_memcpy(dst, src, size))
- return 0;
- break;
- }
- }
-
- return -EFAULT;
-}