diff options
Diffstat (limited to 'arch/csky')
| -rw-r--r-- | arch/csky/Kconfig | 1 | ||||
| -rw-r--r-- | arch/csky/include/asm/io.h | 11 | ||||
| -rw-r--r-- | arch/csky/include/asm/pgtable.h | 4 | ||||
| -rw-r--r-- | arch/csky/kernel/vmlinux.lds.S | 5 | ||||
| -rw-r--r-- | arch/csky/mm/dma-mapping.c | 8 | ||||
| -rw-r--r-- | arch/csky/mm/ioremap.c | 52 |
6 files changed, 14 insertions, 67 deletions
diff --git a/arch/csky/Kconfig b/arch/csky/Kconfig index 3973847b5f42..da09c884cc30 100644 --- a/arch/csky/Kconfig +++ b/arch/csky/Kconfig @@ -17,6 +17,7 @@ config CSKY select IRQ_DOMAIN select HANDLE_DOMAIN_IRQ select DW_APB_TIMER_OF + select GENERIC_IOREMAP select GENERIC_LIB_ASHLDI3 select GENERIC_LIB_ASHRDI3 select GENERIC_LIB_LSHRDI3 diff --git a/arch/csky/include/asm/io.h b/arch/csky/include/asm/io.h index 80d071e2567f..332f51bc68fb 100644 --- a/arch/csky/include/asm/io.h +++ b/arch/csky/include/asm/io.h @@ -36,14 +36,9 @@ /* * I/O memory mapping functions. */ -extern void __iomem *ioremap_cache(phys_addr_t addr, size_t size); -extern void __iomem *__ioremap(phys_addr_t addr, size_t size, pgprot_t prot); -extern void iounmap(void *addr); - -#define ioremap(addr, size) __ioremap((addr), (size), pgprot_noncached(PAGE_KERNEL)) -#define ioremap_wc(addr, size) __ioremap((addr), (size), pgprot_writecombine(PAGE_KERNEL)) -#define ioremap_nocache(addr, size) ioremap((addr), (size)) -#define ioremap_cache ioremap_cache +#define ioremap_wc(addr, size) \ + ioremap_prot((addr), (size), \ + (_PAGE_IOREMAP & ~_CACHE_MASK) | _CACHE_UNCACHED) #include <asm-generic/io.h> diff --git a/arch/csky/include/asm/pgtable.h b/arch/csky/include/asm/pgtable.h index 7c21985c60dc..4b2a41e15f2e 100644 --- a/arch/csky/include/asm/pgtable.h +++ b/arch/csky/include/asm/pgtable.h @@ -86,6 +86,10 @@ #define PAGE_USERIO __pgprot(_PAGE_PRESENT | _PAGE_READ | _PAGE_WRITE | \ _CACHE_CACHED) +#define _PAGE_IOREMAP \ + (_PAGE_PRESENT | __READABLE | __WRITEABLE | _PAGE_GLOBAL | \ + _CACHE_UNCACHED | _PAGE_SO) + #define __P000 PAGE_NONE #define __P001 PAGE_READONLY #define __P010 PAGE_COPY diff --git a/arch/csky/kernel/vmlinux.lds.S b/arch/csky/kernel/vmlinux.lds.S index ae7961b973f2..2ff37beaf2bf 100644 --- a/arch/csky/kernel/vmlinux.lds.S +++ b/arch/csky/kernel/vmlinux.lds.S @@ -49,11 +49,10 @@ SECTIONS _sdata = .; - RO_DATA_SECTION(PAGE_SIZE) - RW_DATA_SECTION(L1_CACHE_BYTES, PAGE_SIZE, THREAD_SIZE) + RO_DATA(PAGE_SIZE) + RW_DATA(L1_CACHE_BYTES, PAGE_SIZE, THREAD_SIZE) _edata = .; - NOTES EXCEPTION_TABLE(L1_CACHE_BYTES) BSS_SECTION(L1_CACHE_BYTES, PAGE_SIZE, L1_CACHE_BYTES) VBR_BASE diff --git a/arch/csky/mm/dma-mapping.c b/arch/csky/mm/dma-mapping.c index 06e85b565454..8f6571ae27c8 100644 --- a/arch/csky/mm/dma-mapping.c +++ b/arch/csky/mm/dma-mapping.c @@ -58,8 +58,8 @@ void arch_dma_prep_coherent(struct page *page, size_t size) cache_op(page_to_phys(page), size, dma_wbinv_set_zero_range); } -void arch_sync_dma_for_device(struct device *dev, phys_addr_t paddr, - size_t size, enum dma_data_direction dir) +void arch_sync_dma_for_device(phys_addr_t paddr, size_t size, + enum dma_data_direction dir) { switch (dir) { case DMA_TO_DEVICE: @@ -74,8 +74,8 @@ void arch_sync_dma_for_device(struct device *dev, phys_addr_t paddr, } } -void arch_sync_dma_for_cpu(struct device *dev, phys_addr_t paddr, - size_t size, enum dma_data_direction dir) +void arch_sync_dma_for_cpu(phys_addr_t paddr, size_t size, + enum dma_data_direction dir) { switch (dir) { case DMA_TO_DEVICE: diff --git a/arch/csky/mm/ioremap.c b/arch/csky/mm/ioremap.c index e13cd3497628..70c8268d3b2b 100644 --- a/arch/csky/mm/ioremap.c +++ b/arch/csky/mm/ioremap.c @@ -3,60 +3,8 @@ #include <linux/export.h> #include <linux/mm.h> -#include <linux/vmalloc.h> #include <linux/io.h> -#include <asm/pgtable.h> - -static void __iomem *__ioremap_caller(phys_addr_t addr, size_t size, - pgprot_t prot, void *caller) -{ - phys_addr_t last_addr; - unsigned long offset, vaddr; - struct vm_struct *area; - - last_addr = addr + size - 1; - if (!size || last_addr < addr) - return NULL; - - offset = addr & (~PAGE_MASK); - addr &= PAGE_MASK; - size = PAGE_ALIGN(size + offset); - - area = get_vm_area_caller(size, VM_IOREMAP, caller); - if (!area) - return NULL; - - vaddr = (unsigned long)area->addr; - - if (ioremap_page_range(vaddr, vaddr + size, addr, prot)) { - free_vm_area(area); - return NULL; - } - - return (void __iomem *)(vaddr + offset); -} - -void __iomem *__ioremap(phys_addr_t phys_addr, size_t size, pgprot_t prot) -{ - return __ioremap_caller(phys_addr, size, prot, - __builtin_return_address(0)); -} -EXPORT_SYMBOL(__ioremap); - -void __iomem *ioremap_cache(phys_addr_t phys_addr, size_t size) -{ - return __ioremap_caller(phys_addr, size, PAGE_KERNEL, - __builtin_return_address(0)); -} -EXPORT_SYMBOL(ioremap_cache); - -void iounmap(void __iomem *addr) -{ - vunmap((void *)((unsigned long)addr & PAGE_MASK)); -} -EXPORT_SYMBOL(iounmap); - pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn, unsigned long size, pgprot_t vma_prot) { |