@@ -46,6 +46,7 @@ config IA64
select GENERIC_IRQ_LEGACY
select ARCH_HAVE_NMI_SAFE_CMPXCHG
select GENERIC_IOMAP
+ select GENERIC_IOREMAP
select GENERIC_SMP_IDLE_THREAD
select ARCH_TASK_STRUCT_ON_STACK
select ARCH_TASK_STRUCT_ALLOCATOR
@@ -255,17 +255,23 @@ static inline void outsl(unsigned long port, const void *src,
# ifdef __KERNEL__
-extern void __iomem * ioremap(unsigned long offset, unsigned long size);
-extern void __iomem * ioremap_uc(unsigned long offset, unsigned long size);
-extern void iounmap (volatile void __iomem *addr);
-static inline void __iomem * ioremap_cache (unsigned long phys_addr, unsigned long size)
-{
- return ioremap(phys_addr, size);
-}
-#define ioremap ioremap
-#define ioremap_cache ioremap_cache
+/*
+ * I/O memory mapping functions.
+ */
+void __iomem *
+ioremap_allowed(phys_addr_t *paddr, size_t size, unsigned long *prot_val);
+#define ioremap_allowed ioremap_allowed
+
+int iounmap_allowed(void *addr);
+#define iounmap_allowed iounmap_allowed
+
+#define _PAGE_IOREMAP pgprot_val(PAGE_KERNEL)
+
+#define ioremap_cache(addr, size) \
+ ioremap_prot((addr), (size), pgprot_val(PAGE_KERNEL))
+
+void __iomem *ioremap_uc(unsigned long offset, unsigned long size);
#define ioremap_uc ioremap_uc
-#define iounmap iounmap
/*
* String version of IO memory access ops:
@@ -30,15 +30,12 @@ early_ioremap (unsigned long phys_addr, unsigned long size)
}
void __iomem *
-ioremap (unsigned long phys_addr, unsigned long size)
+ioremap_allowed(phys_addr_t *paddr, size_t size, unsigned long *prot_val)
{
- void __iomem *addr;
- struct vm_struct *area;
- unsigned long offset;
- pgprot_t prot;
- u64 attr;
+ phys_addr_t phys_addr = *paddr;
unsigned long gran_base, gran_size;
unsigned long page_base;
+ u64 attr;
/*
* For things in kern_memmap, we must use the same attribute
@@ -69,35 +66,18 @@ ioremap (unsigned long phys_addr, unsigned long size)
page_base = phys_addr & PAGE_MASK;
size = PAGE_ALIGN(phys_addr + size) - page_base;
if (efi_mem_attribute(page_base, size) & EFI_MEMORY_WB) {
- prot = PAGE_KERNEL;
-
- /*
- * Mappings have to be page-aligned
- */
- offset = phys_addr & ~PAGE_MASK;
- phys_addr &= PAGE_MASK;
-
- /*
- * Ok, go for it..
- */
- area = get_vm_area(size, VM_IOREMAP);
- if (!area)
- return NULL;
-
- area->phys_addr = phys_addr;
- addr = (void __iomem *) area->addr;
- if (ioremap_page_range((unsigned long) addr,
- (unsigned long) addr + size, phys_addr, prot)) {
- vunmap((void __force *) addr);
- return NULL;
- }
-
- return (void __iomem *) (offset + (char __iomem *)addr);
+ return NULL;
}
return __ioremap_uc(phys_addr);
}
-EXPORT_SYMBOL(ioremap);
+
+int iounmap_allowed(void __iomem *addr)
+{
+ if (REGION_NUMBER(addr) != RGN_GATE)
+ return -EINVAL;
+ return 0;
+}
void __iomem *
ioremap_uc(unsigned long phys_addr, unsigned long size)
@@ -113,11 +93,3 @@ void
early_iounmap (volatile void __iomem *addr, unsigned long size)
{
}
-
-void
-iounmap (volatile void __iomem *addr)
-{
- if (REGION_NUMBER(addr) == RGN_GATE)
- vunmap((void *) ((unsigned long) addr & PAGE_MASK));
-}
-EXPORT_SYMBOL(iounmap);
Add hooks ioremap_allowed() and iounmap_allowed() for ia64's special operation when ioremap() and iounmap(), then ioremap_cache() is converted to use ioremap_prot() from GENERIC_IOREMAP. The old ioremap_uc() is kept and add its macro definittion. Signed-off-by: Baoquan He <bhe@redhat.com> Cc: linux-ia64@vger.kernel.org --- arch/ia64/Kconfig | 1 + arch/ia64/include/asm/io.h | 26 ++++++++++++-------- arch/ia64/mm/ioremap.c | 50 +++++++++----------------------------- 3 files changed, 28 insertions(+), 49 deletions(-)