X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=include%2Fasm-ia64%2Fio.h;h=491e9d1fc538d0e31cbc2ecbbf15016cd6d7d194;hb=6a77f38946aaee1cd85eeec6cf4229b204c15071;hp=4d19a5b240cb5478b145d64fd0e699888febdbd5;hpb=c7b5ebbddf7bcd3651947760f423e3783bbe6573;p=linux-2.6.git

diff --git a/include/asm-ia64/io.h b/include/asm-ia64/io.h
index 4d19a5b24..491e9d1fc 100644
--- a/include/asm-ia64/io.h
+++ b/include/asm-ia64/io.h
@@ -32,7 +32,8 @@
  */
 #define IO_SPACE_LIMIT		0xffffffffffffffffUL
 
-#define MAX_IO_SPACES			16
+#define MAX_IO_SPACES_BITS		4
+#define MAX_IO_SPACES			(1UL << MAX_IO_SPACES_BITS)
 #define IO_SPACE_BITS			24
 #define IO_SPACE_SIZE			(1UL << IO_SPACE_BITS)
 
@@ -52,10 +53,24 @@ extern unsigned int num_io_spaces;
 
 # ifdef __KERNEL__
 
+/*
+ * All MMIO iomem cookies are in region 6; anything less is a PIO cookie:
+ *	0xCxxxxxxxxxxxxxxx	MMIO cookie (return from ioremap)
+ *	0x000000001SPPPPPP	PIO cookie (S=space number, P..P=port)
+ *
+ * ioread/writeX() uses the leading 1 in PIO cookies (PIO_OFFSET) to catch
+ * code that uses bare port numbers without the prerequisite pci_iomap().
+ */
+#define PIO_OFFSET		(1UL << (MAX_IO_SPACES_BITS + IO_SPACE_BITS))
+#define PIO_MASK		(PIO_OFFSET - 1)
+#define PIO_RESERVED		__IA64_UNCACHED_OFFSET
+#define HAVE_ARCH_PIO_SIZE
+
 #include <asm/intrinsics.h>
 #include <asm/machvec.h>
 #include <asm/page.h>
 #include <asm/system.h>
+#include <asm-generic/iomap.h>
 
 /*
  * Change virtual addresses to physical addresses and vv.
@@ -91,6 +106,20 @@ extern int valid_phys_addr_range (unsigned long addr, size_t *count); /* efi.c *
  */
 #define __ia64_mf_a()	ia64_mfa()
 
+/**
+ * ___ia64_mmiowb - I/O write barrier
+ *
+ * Ensure ordering of I/O space writes.  This will make sure that writes
+ * following the barrier will arrive after all previous writes.  For most
+ * ia64 platforms, this is a simple 'mf.a' instruction.
+ *
+ * See Documentation/DocBook/deviceiobook.tmpl for more information.
+ */
+static inline void ___ia64_mmiowb(void)
+{
+	ia64_mfa();
+}
+
 static inline const unsigned long
 __ia64_get_io_port_base (void)
 {
@@ -133,6 +162,7 @@ __ia64_mk_io_addr (unsigned long port)
 #define __ia64_writew	___ia64_writew
 #define __ia64_writel	___ia64_writel
 #define __ia64_writeq	___ia64_writeq
+#define __ia64_mmiowb	___ia64_mmiowb
 
 /*
  * For the in/out routines, we need to do "mf.a" _after_ doing the I/O access to ensure
@@ -267,6 +297,7 @@ __outsl (unsigned long port, const void *src, unsigned long count)
 #define __outb		platform_outb
 #define __outw		platform_outw
 #define __outl		platform_outl
+#define __mmiowb	platform_mmiowb
 
 #define inb(p)		__inb(p)
 #define inw(p)		__inw(p)
@@ -280,6 +311,7 @@ __outsl (unsigned long port, const void *src, unsigned long count)
 #define outsb(p,s,c)	__outsb(p,s,c)
 #define outsw(p,s,c)	__outsw(p,s,c)
 #define outsl(p,s,c)	__outsl(p,s,c)
+#define mmiowb()	__mmiowb()
 
 /*
  * The address passed to these functions are ioremap()ped already.
@@ -415,14 +447,9 @@ iounmap (volatile void __iomem *addr)
 /*
  * String version of IO memory access ops:
  */
-extern void __ia64_memcpy_fromio (void *, volatile void __iomem *, long);
-extern void __ia64_memcpy_toio (volatile void __iomem *, void *, long);
-extern void __ia64_memset_c_io (volatile void __iomem *, unsigned long, long);
-
-#define memcpy_fromio(to,from,len)	__ia64_memcpy_fromio((to), (from),(len))
-#define memcpy_toio(to,from,len)	__ia64_memcpy_toio((to),(from),(len))
-#define memset_io(addr,c,len)		__ia64_memset_c_io((addr), 0x0101010101010101UL*(u8)(c), \
-							   (len))
+extern void memcpy_fromio(void *dst, const volatile void __iomem *src, long n);
+extern void memcpy_toio(volatile void __iomem *dst, const void *src, long n);
+extern void memset_io(volatile void __iomem *s, int c, long n);
 
 #define dma_cache_inv(_start,_size)             do { } while (0)
 #define dma_cache_wback(_start,_size)           do { } while (0)