--- /dev/null
+/*
+ * linux/include/asm-sh/io.h
+ *
+ * Copyright (C) 1996-2000 Russell King
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Modifications:
+ * 16-Sep-1996 RMK Inlined the inx/outx functions & optimised for both
+ * constant addresses and variable addresses.
+ * 04-Dec-1997 RMK Moved a lot of this stuff to the new architecture
+ * specific IO header files.
+ * 27-Mar-1999 PJB Second parameter of memcpy_toio is const..
+ * 04-Apr-1999 PJB Added check_signature.
+ * 12-Dec-1999 RMK More cleanups
+ * 18-Jun-2000 RMK Removed virt_to_* and friends definitions
+ */
+#ifndef __ASM_SH_IO_H
+#define __ASM_SH_IO_H
+
+#ifdef __KERNEL__
+
+#include <linux/types.h>
+#include <asm/byteorder.h>
+
+/*
+ * Generic virtual read/write. Note that we don't support half-word
+ * read/writes. We define __arch_*[bl] here, and leave __arch_*w
+ * to the architecture specific code.
+ */
+#define __arch_getb(a) (*(volatile unsigned char *)(a))
+#define __arch_getw(a) (*(volatile unsigned short *)(a))
+#define __arch_getl(a) (*(volatile unsigned int *)(a))
+
+#define __arch_putb(v, a) (*(volatile unsigned char *)(a) = (v))
+#define __arch_putw(v, a) (*(volatile unsigned short *)(a) = (v))
+#define __arch_putl(v, a) (*(volatile unsigned int *)(a) = (v))
+
+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_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);
+
+#define __raw_writeb(v, a) __arch_putb(v, a)
+#define __raw_writew(v, a) __arch_putw(v, a)
+#define __raw_writel(v, a) __arch_putl(v, a)
+
+#define __raw_readb(a) __arch_getb(a)
+#define __raw_readw(a) __arch_getw(a)
+#define __raw_readl(a) __arch_getl(a)
+
+/*
+ * The compiler seems to be incapable of optimising constants
+ * properly. Spell it out to the compiler in some cases.
+ * These are only valid for small values of "off" (< 1<<12)
+ */
+#define __raw_base_writeb(val, base, off) __arch_base_putb(val, base, off)
+#define __raw_base_writew(val, base, off) __arch_base_putw(val, base, off)
+#define __raw_base_writel(val, base, off) __arch_base_putl(val, base, off)
+
+#define __raw_base_readb(base, off) __arch_base_getb(base, off)
+#define __raw_base_readw(base, off) __arch_base_getw(base, off)
+#define __raw_base_readl(base, off) __arch_base_getl(base, off)
+
+/*
+ * Now, pick up the machine-defined IO definitions
+ */
+#if 0 /* XXX###XXX */
+#include <asm/arch/io.h>
+#endif /* XXX###XXX */
+
+/*
+ * IO port access primitives
+ * -------------------------
+ *
+ * The SH doesn't have special IO access instructions; all IO is memory
+ * mapped. Note that these are defined to perform little endian accesses
+ * only. Their primary purpose is to access PCI and ISA peripherals.
+ *
+ * The machine specific io.h include defines __io to translate an "IO"
+ * address to a memory address.
+ *
+ * Note that we prevent GCC re-ordering or caching values in expressions
+ * by introducing sequence points into the in*() definitions. Note that
+ * __raw_* do not guarantee this behaviour.
+ *
+ * The {in,out}[bwl] macros are for emulating x86-style PCI/ISA IO space.
+ */
+#define outb(v, p) __raw_writeb(v, p)
+#define outw(v, p) __raw_writew(cpu_to_le16(v), p)
+#define outl(v, p) __raw_writel(cpu_to_le32(v), p)
+
+#define inb(p) ({ unsigned int __v = __raw_readb(p); __v; })
+#define inw(p) ({ unsigned int __v = __le16_to_cpu(__raw_readw(p)); __v; })
+#define inl(p) ({ unsigned int __v = __le32_to_cpu(__raw_readl(p)); __v; })
+
+#define outsb(p, d, l) __raw_writesb(p, d, l)
+#define outsw(p, d, l) __raw_writesw(p, d, l)
+#define outsl(p, d, l) __raw_writesl(p, d, l)
+
+#define insb(p, d, l) __raw_readsb(p, d, l)
+#define insw(p, d, l) __raw_readsw(p, d, l)
+#define insl(p, d, l) __raw_readsl(p, d, l)
+
+#define outb_p(val, port) outb((val), (port))
+#define outw_p(val, port) outw((val), (port))
+#define outl_p(val, port) outl((val), (port))
+#define inb_p(port) inb((port))
+#define inw_p(port) inw((port))
+#define inl_p(port) inl((port))
+
+#define outsb_p(port, from, len) outsb(port, from, len)
+#define outsw_p(port, from, len) outsw(port, from, len)
+#define outsl_p(port, from, len) outsl(port, from, len)
+#define insb_p(port, to, len) insb(port, to, len)
+#define insw_p(port, to, len) insw(port, to, len)
+#define insl_p(port, to, len) insl(port, to, len)
+
+/* for U-Boot PCI */
+#define out_8(port, val) outb(val, port)
+#define out_le16(port, val) outw(val, port)
+#define out_le32(port, val) outl(val, port)
+#define in_8(port) inb(port)
+#define in_le16(port) inw(port)
+#define in_le32(port) inl(port)
+/*
+ * ioremap and friends.
+ *
+ * ioremap takes a PCI memory address, as specified in
+ * linux/Documentation/IO-mapping.txt. If you want a
+ * physical address, use __ioremap instead.
+ */
+extern void *__ioremap(unsigned long offset, size_t size, unsigned long flags);
+extern void __iounmap(void *addr);
+
+/*
+ * Generic ioremap support.
+ *
+ * Define:
+ * iomem_valid_addr(off,size)
+ * iomem_to_phys(off)
+ */
+#ifdef iomem_valid_addr
+#define __arch_ioremap(off, sz, nocache) \
+({ \
+ unsigned long _off = (off), _size = (sz); \
+ void *_ret = (void *)0; \
+ if (iomem_valid_addr(_off, _size)) \
+ _ret = __ioremap(iomem_to_phys(_off), _size, 0); \
+ _ret; \
+})
+
+#define __arch_iounmap __iounmap
+#endif
+
+#define ioremap(off, sz) __arch_ioremap((off), (sz), 0)
+#define ioremap_nocache(off, sz) __arch_ioremap((off), (sz), 1)
+#define iounmap(_addr) __arch_iounmap(_addr)
+
+/*
+ * DMA-consistent mapping functions. These allocate/free a region of
+ * uncached, unwrite-buffered mapped memory space for use with DMA
+ * devices. This is the "generic" version. The PCI specific version
+ * is in pci.h
+ */
+extern void *consistent_alloc(int gfp, size_t size, dma_addr_t *handle);
+extern void consistent_free(void *vaddr, size_t size, dma_addr_t handle);
+extern void consistent_sync(void *vaddr, size_t size, int rw);
+
+/*
+ * 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);
+
+/*
+ * If this architecture has PCI memory IO, then define the read/write
+ * macros. These should only be used with the cookie passed from
+ * ioremap.
+ */
+#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 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 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))
+#define memcpy_toio(c, a, l) _memcpy_toio(__mem_pci(c), (a), (l))
+
+#define eth_io_copy_and_sum(s, c, l, b) \
+ eth_copy_and_sum((s), __mem_pci(c), (l), (b))
+
+static inline int
+check_signature(unsigned long io_addr, const unsigned char *signature,
+ int length)
+{
+ int retval = 0;
+ do {
+ if (readb(io_addr) != *signature)
+ goto out;
+ io_addr++;
+ signature++;
+ length--;
+ } while (length);
+ retval = 1;
+out:
+ return retval;
+}
+
+#elif !defined(readb)
+
+#define readb(addr) __raw_readb(addr)
+#define readw(addr) __raw_readw(addr)
+#define readl(addr) __raw_readl(addr)
+#define writeb(v, addr) __raw_writeb(v, addr)
+#define writew(v, addr) __raw_writew(v, addr)
+#define writel(v, addr) __raw_writel(v, addr)
+
+#define check_signature(io, sig, len) (0)
+
+#endif /* __mem_pci */
+
+static inline void sync(void)
+{
+}
+
+/*
+ * Clear and set bits in one shot. These macros can be used to clear and
+ * set multiple bits in a register using a single call. These macros can
+ * also be used to set a multiple-bit bit pattern using a mask, by
+ * specifying the mask in the 'clear' parameter and the new bit pattern
+ * in the 'set' parameter.
+ */
+
+#define clrbits(type, addr, clear) \
+ out_##type((addr), in_##type(addr) & ~(clear))
+
+#define setbits(type, addr, set) \
+ out_##type((addr), in_##type(addr) | (set))
+
+#define clrsetbits(type, addr, clear, set) \
+ out_##type((addr), (in_##type(addr) & ~(clear)) | (set))
+
+#define clrbits_be32(addr, clear) clrbits(be32, addr, clear)
+#define setbits_be32(addr, set) setbits(be32, addr, set)
+#define clrsetbits_be32(addr, clear, set) clrsetbits(be32, addr, clear, set)
+
+#define clrbits_le32(addr, clear) clrbits(le32, addr, clear)
+#define setbits_le32(addr, set) setbits(le32, addr, set)
+#define clrsetbits_le32(addr, clear, set) clrsetbits(le32, addr, clear, set)
+
+#define clrbits_be16(addr, clear) clrbits(be16, addr, clear)
+#define setbits_be16(addr, set) setbits(be16, addr, set)
+#define clrsetbits_be16(addr, clear, set) clrsetbits(be16, addr, clear, set)
+
+#define clrbits_le16(addr, clear) clrbits(le16, addr, clear)
+#define setbits_le16(addr, set) setbits(le16, addr, set)
+#define clrsetbits_le16(addr, clear, set) clrsetbits(le16, addr, clear, set)
+
+#define clrbits_8(addr, clear) clrbits(8, addr, clear)
+#define setbits_8(addr, set) setbits(8, addr, set)
+#define clrsetbits_8(addr, clear, set) clrsetbits(8, addr, clear, set)
+
+/*
+ * Given a physical address and a length, return a virtual address
+ * that can be used to access the memory range with the caching
+ * properties specified by "flags".
+ */
+#define MAP_NOCACHE (0)
+#define MAP_WRCOMBINE (0)
+#define MAP_WRBACK (0)
+#define MAP_WRTHROUGH (0)
+
+static inline void *
+map_physmem(phys_addr_t paddr, unsigned long len, unsigned long flags)
+{
+ return (void *)paddr;
+}
+
+/*
+ * Take down a mapping set up by map_physmem().
+ */
+static inline void unmap_physmem(void *vaddr, unsigned long flags)
+{
+
+}
+
+static inline phys_addr_t virt_to_phys(void *vaddr)
+{
+ return (phys_addr_t)(vaddr);
+}
+
+#endif /* __KERNEL__ */
+#endif /* __ASM_SH_IO_H */
Code Review / kvmfornfv.git / blobdiff