* 04-Apr-1999 PJB Added check_signature.
* 12-Dec-1999 RMK More cleanups
* 18-Jun-2000 RMK Removed virt_to_* and friends definitions
+ * 05-Oct-2004 BJD Moved memory string functions to use void __iomem
*/
#ifndef __ASM_ARM_IO_H
#define __ASM_ARM_IO_H
#include <linux/types.h>
#include <asm/byteorder.h>
#include <asm/memory.h>
-#include <asm/arch/hardware.h>
/*
* ISA I/O bus memory addresses are 1:1 with the physical address.
* Generic IO read/write. These perform native-endian accesses. Note
* that some architectures will want to re-define __raw_{read,write}w.
*/
-extern void __raw_writesb(unsigned int addr, const void *data, int bytelen);
-extern void __raw_writesw(unsigned int addr, const void *data, int wordlen);
-extern void __raw_writesl(unsigned int addr, const void *data, int longlen);
+extern void __raw_writesb(void __iomem *addr, const void *data, int bytelen);
+extern void __raw_writesw(void __iomem *addr, const void *data, int wordlen);
+extern void __raw_writesl(void __iomem *addr, const void *data, int longlen);
-extern void __raw_readsb(unsigned int addr, void *data, int bytelen);
-extern void __raw_readsw(unsigned int addr, void *data, int wordlen);
-extern void __raw_readsl(unsigned int addr, void *data, int longlen);
+extern void __raw_readsb(const void __iomem *addr, void *data, int bytelen);
+extern void __raw_readsw(const void __iomem *addr, void *data, int wordlen);
+extern void __raw_readsl(const void __iomem *addr, void *data, int longlen);
-#define __raw_writeb(v,a) (*(volatile unsigned char *)(a) = (v))
-#define __raw_writew(v,a) (*(volatile unsigned short *)(a) = (v))
-#define __raw_writel(v,a) (*(volatile unsigned int *)(a) = (v))
+#define __raw_writeb(v,a) (__chk_io_ptr(a), *(volatile unsigned char __force *)(a) = (v))
+#define __raw_writew(v,a) (__chk_io_ptr(a), *(volatile unsigned short __force *)(a) = (v))
+#define __raw_writel(v,a) (__chk_io_ptr(a), *(volatile unsigned int __force *)(a) = (v))
-#define __raw_readb(a) (*(volatile unsigned char *)(a))
-#define __raw_readw(a) (*(volatile unsigned short *)(a))
-#define __raw_readl(a) (*(volatile unsigned int *)(a))
+#define __raw_readb(a) (__chk_io_ptr(a), *(volatile unsigned char __force *)(a))
+#define __raw_readw(a) (__chk_io_ptr(a), *(volatile unsigned short __force *)(a))
+#define __raw_readl(a) (__chk_io_ptr(a), *(volatile unsigned int __force *)(a))
+
+/*
+ * Architecture ioremap implementation.
+ *
+ * __ioremap takes CPU physical address.
+ *
+ * __ioremap_pfn takes a Page Frame Number and an offset into that page
+ */
+extern void __iomem * __ioremap_pfn(unsigned long, unsigned long, size_t, unsigned long);
+extern void __iomem * __ioremap(unsigned long, size_t, unsigned long);
+extern void __iounmap(void __iomem *addr);
/*
* Bad read/write accesses...
* only. Their primary purpose is to access PCI and ISA peripherals.
*
* Note that for a big endian machine, this implies that the following
- * big endian mode connectivity is in place, as described by numerious
+ * big endian mode connectivity is in place, as described by numerous
* ARM documents:
*
* PCI: D0-D7 D8-D15 D16-D23 D24-D31
*/
#ifdef __io
#define outb(v,p) __raw_writeb(v,__io(p))
-#define outw(v,p) __raw_writew(cpu_to_le16(v),__io(p))
-#define outl(v,p) __raw_writel(cpu_to_le32(v),__io(p))
+#define outw(v,p) __raw_writew((__force __u16) \
+ cpu_to_le16(v),__io(p))
+#define outl(v,p) __raw_writel((__force __u32) \
+ cpu_to_le32(v),__io(p))
-#define inb(p) ({ unsigned int __v = __raw_readb(__io(p)); __v; })
-#define inw(p) ({ unsigned int __v = le16_to_cpu(__raw_readw(__io(p))); __v; })
-#define inl(p) ({ unsigned int __v = le32_to_cpu(__raw_readl(__io(p))); __v; })
+#define inb(p) ({ __u8 __v = __raw_readb(__io(p)); __v; })
+#define inw(p) ({ __u16 __v = le16_to_cpu((__force __le16) \
+ __raw_readw(__io(p))); __v; })
+#define inl(p) ({ __u32 __v = le32_to_cpu((__force __le32) \
+ __raw_readl(__io(p))); __v; })
#define outsb(p,d,l) __raw_writesb(__io(p),d,l)
#define outsw(p,d,l) __raw_writesw(__io(p),d,l)
/*
* String version of IO memory access ops:
*/
-extern void _memcpy_fromio(void *, unsigned long, size_t);
-extern void _memcpy_toio(unsigned long, const void *, size_t);
-extern void _memset_io(unsigned long, int, size_t);
+extern void _memcpy_fromio(void *, const volatile void __iomem *, size_t);
+extern void _memcpy_toio(volatile void __iomem *, const void *, size_t);
+extern void _memset_io(volatile void __iomem *, int, size_t);
+
+#define mmiowb()
/*
* Memory access primitives
* IO port primitives for more information.
*/
#ifdef __mem_pci
-#define readb(c) ({ unsigned int __v = __raw_readb(__mem_pci(c)); __v; })
-#define readw(c) ({ unsigned int __v = le16_to_cpu(__raw_readw(__mem_pci(c))); __v; })
-#define readl(c) ({ unsigned int __v = le32_to_cpu(__raw_readl(__mem_pci(c))); __v; })
+#define readb(c) ({ __u8 __v = __raw_readb(__mem_pci(c)); __v; })
+#define readw(c) ({ __u16 __v = le16_to_cpu((__force __le16) \
+ __raw_readw(__mem_pci(c))); __v; })
+#define readl(c) ({ __u32 __v = le32_to_cpu((__force __le32) \
+ __raw_readl(__mem_pci(c))); __v; })
#define readb_relaxed(addr) readb(addr)
#define readw_relaxed(addr) readw(addr)
#define readl_relaxed(addr) readl(addr)
-#define readsb(p,d,l) __raw_readsb((unsigned int)__mem_pci(p),d,l)
-#define readsw(p,d,l) __raw_readsw((unsigned int)__mem_pci(p),d,l)
-#define readsl(p,d,l) __raw_readsl((unsigned int)__mem_pci(p),d,l)
+#define readsb(p,d,l) __raw_readsb(__mem_pci(p),d,l)
+#define readsw(p,d,l) __raw_readsw(__mem_pci(p),d,l)
+#define readsl(p,d,l) __raw_readsl(__mem_pci(p),d,l)
#define writeb(v,c) __raw_writeb(v,__mem_pci(c))
-#define writew(v,c) __raw_writew(cpu_to_le16(v),__mem_pci(c))
-#define writel(v,c) __raw_writel(cpu_to_le32(v),__mem_pci(c))
+#define writew(v,c) __raw_writew((__force __u16) \
+ cpu_to_le16(v),__mem_pci(c))
+#define writel(v,c) __raw_writel((__force __u32) \
+ cpu_to_le32(v),__mem_pci(c))
-#define writesb(p,d,l) __raw_writesb((unsigned int)__mem_pci(p),d,l)
-#define writesw(p,d,l) __raw_writesw((unsigned int)__mem_pci(p),d,l)
-#define writesl(p,d,l) __raw_writesl((unsigned int)__mem_pci(p),d,l)
+#define writesb(p,d,l) __raw_writesb(__mem_pci(p),d,l)
+#define writesw(p,d,l) __raw_writesw(__mem_pci(p),d,l)
+#define writesl(p,d,l) __raw_writesl(__mem_pci(p),d,l)
#define memset_io(c,v,l) _memset_io(__mem_pci(c),(v),(l))
#define memcpy_fromio(a,c,l) _memcpy_fromio((a),__mem_pci(c),(l))
eth_copy_and_sum((s),__mem_pci(c),(l),(b))
static inline int
-check_signature(unsigned long io_addr, const unsigned char *signature,
+check_signature(void __iomem *io_addr, const unsigned char *signature,
int length)
{
int retval = 0;
#endif /* __mem_pci */
-/*
- * If this architecture has ISA IO, then define the isa_read/isa_write
- * macros.
- */
-#ifdef __mem_isa
-
-#define isa_readb(addr) __raw_readb(__mem_isa(addr))
-#define isa_readw(addr) __raw_readw(__mem_isa(addr))
-#define isa_readl(addr) __raw_readl(__mem_isa(addr))
-#define isa_writeb(val,addr) __raw_writeb(val,__mem_isa(addr))
-#define isa_writew(val,addr) __raw_writew(val,__mem_isa(addr))
-#define isa_writel(val,addr) __raw_writel(val,__mem_isa(addr))
-#define isa_memset_io(a,b,c) _memset_io(__mem_isa(a),(b),(c))
-#define isa_memcpy_fromio(a,b,c) _memcpy_fromio((a),__mem_isa(b),(c))
-#define isa_memcpy_toio(a,b,c) _memcpy_toio(__mem_isa((a)),(b),(c))
-
-#define isa_eth_io_copy_and_sum(a,b,c,d) \
- eth_copy_and_sum((a),__mem_isa(b),(c),(d))
-
-static inline int
-isa_check_signature(unsigned long io_addr, const unsigned char *signature,
- int length)
-{
- int retval = 0;
- do {
- if (isa_readb(io_addr) != *signature)
- goto out;
- io_addr++;
- signature++;
- length--;
- } while (length);
- retval = 1;
-out:
- return retval;
-}
-
-#else /* __mem_isa */
-
-#define isa_readb(addr) (__readwrite_bug("isa_readb"),0)
-#define isa_readw(addr) (__readwrite_bug("isa_readw"),0)
-#define isa_readl(addr) (__readwrite_bug("isa_readl"),0)
-#define isa_writeb(val,addr) __readwrite_bug("isa_writeb")
-#define isa_writew(val,addr) __readwrite_bug("isa_writew")
-#define isa_writel(val,addr) __readwrite_bug("isa_writel")
-#define isa_memset_io(a,b,c) __readwrite_bug("isa_memset_io")
-#define isa_memcpy_fromio(a,b,c) __readwrite_bug("isa_memcpy_fromio")
-#define isa_memcpy_toio(a,b,c) __readwrite_bug("isa_memcpy_toio")
-
-#define isa_eth_io_copy_and_sum(a,b,c,d) \
- __readwrite_bug("isa_eth_io_copy_and_sum")
-
-#define isa_check_signature(io,sig,len) (0)
-
-#endif /* __mem_isa */
-
/*
* ioremap and friends.
*
* ioremap takes a PCI memory address, as specified in
- * linux/Documentation/IO-mapping.txt.
+ * Documentation/IO-mapping.txt.
+ *
*/
-extern void * __ioremap(unsigned long, size_t, unsigned long, unsigned long);
-extern void __iounmap(void *addr);
-
#ifndef __arch_ioremap
-#define ioremap(cookie,size) __ioremap(cookie,size,0,1)
-#define ioremap_nocache(cookie,size) __ioremap(cookie,size,0,1)
+#define ioremap(cookie,size) __ioremap(cookie,size,0)
+#define ioremap_nocache(cookie,size) __ioremap(cookie,size,0)
+#define ioremap_cached(cookie,size) __ioremap(cookie,size,L_PTE_CACHEABLE)
#define iounmap(cookie) __iounmap(cookie)
#else
-#define ioremap(cookie,size) __arch_ioremap((cookie),(size),0,1)
-#define ioremap_nocache(cookie,size) __arch_ioremap((cookie),(size),0,1)
+#define ioremap(cookie,size) __arch_ioremap((cookie),(size),0)
+#define ioremap_nocache(cookie,size) __arch_ioremap((cookie),(size),0)
+#define ioremap_cached(cookie,size) __arch_ioremap((cookie),(size),L_PTE_CACHEABLE)
#define iounmap(cookie) __arch_iounmap(cookie)
#endif
+/*
+ * io{read,write}{8,16,32} macros
+ */
+#ifndef ioread8
+#define ioread8(p) ({ unsigned int __v = __raw_readb(p); __v; })
+#define ioread16(p) ({ unsigned int __v = le16_to_cpu(__raw_readw(p)); __v; })
+#define ioread32(p) ({ unsigned int __v = le32_to_cpu(__raw_readl(p)); __v; })
+
+#define iowrite8(v,p) __raw_writeb(v, p)
+#define iowrite16(v,p) __raw_writew(cpu_to_le16(v), p)
+#define iowrite32(v,p) __raw_writel(cpu_to_le32(v), p)
+
+#define ioread8_rep(p,d,c) __raw_readsb(p,d,c)
+#define ioread16_rep(p,d,c) __raw_readsw(p,d,c)
+#define ioread32_rep(p,d,c) __raw_readsl(p,d,c)
+
+#define iowrite8_rep(p,s,c) __raw_writesb(p,s,c)
+#define iowrite16_rep(p,s,c) __raw_writesw(p,s,c)
+#define iowrite32_rep(p,s,c) __raw_writesl(p,s,c)
+
+extern void __iomem *ioport_map(unsigned long port, unsigned int nr);
+extern void ioport_unmap(void __iomem *addr);
+#endif
+
+struct pci_dev;
+
+extern void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long maxlen);
+extern void pci_iounmap(struct pci_dev *dev, void __iomem *addr);
+
/*
* can the hardware map this into one segment or not, given no other
* constraints.
#define BIOVEC_MERGEABLE(vec1, vec2) \
((bvec_to_phys((vec1)) + (vec1)->bv_len) == bvec_to_phys((vec2)))
+/*
+ * Convert a physical pointer to a virtual kernel pointer for /dev/mem
+ * access
+ */
+#define xlate_dev_mem_ptr(p) __va(p)
+
+/*
+ * Convert a virtual cached pointer to an uncached pointer
+ */
+#define xlate_dev_kmem_ptr(p) p
+
#endif /* __KERNEL__ */
#endif /* __ASM_ARM_IO_H */
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