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afc26cb39e
Add architectural support for USB EHCI host controllers. It has been tested using the USB EHCI host controller from Xilinx Inc., using both High Speed devices and Full Speed devices. Signed-off-by: Julie Zhu <julie.zhu@xilinx.com> Signed-off-by: Michal Simek <monstr@monstr.eu>
241 lines
7.4 KiB
C
241 lines
7.4 KiB
C
/*
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* Copyright (C) 2007-2009 Michal Simek <monstr@monstr.eu>
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* Copyright (C) 2007-2009 PetaLogix
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* Copyright (C) 2006 Atmark Techno, Inc.
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*/
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#ifndef _ASM_MICROBLAZE_IO_H
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#define _ASM_MICROBLAZE_IO_H
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#include <asm/byteorder.h>
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#include <asm/page.h>
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#include <linux/types.h>
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#include <linux/mm.h> /* Get struct page {...} */
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#define IO_SPACE_LIMIT (0xFFFFFFFF)
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static inline unsigned char __raw_readb(const volatile void __iomem *addr)
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{
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return *(volatile unsigned char __force *)addr;
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}
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static inline unsigned short __raw_readw(const volatile void __iomem *addr)
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{
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return *(volatile unsigned short __force *)addr;
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}
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static inline unsigned int __raw_readl(const volatile void __iomem *addr)
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{
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return *(volatile unsigned int __force *)addr;
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}
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static inline unsigned long __raw_readq(const volatile void __iomem *addr)
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{
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return *(volatile unsigned long __force *)addr;
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}
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static inline void __raw_writeb(unsigned char v, volatile void __iomem *addr)
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{
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*(volatile unsigned char __force *)addr = v;
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}
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static inline void __raw_writew(unsigned short v, volatile void __iomem *addr)
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{
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*(volatile unsigned short __force *)addr = v;
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}
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static inline void __raw_writel(unsigned int v, volatile void __iomem *addr)
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{
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*(volatile unsigned int __force *)addr = v;
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}
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static inline void __raw_writeq(unsigned long v, volatile void __iomem *addr)
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{
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*(volatile unsigned long __force *)addr = v;
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}
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/*
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* read (readb, readw, readl, readq) and write (writeb, writew,
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* writel, writeq) accessors are for PCI and thus littel endian.
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* Linux 2.4 for Microblaze had this wrong.
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*/
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static inline unsigned char readb(const volatile void __iomem *addr)
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{
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return *(volatile unsigned char __force *)addr;
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}
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static inline unsigned short readw(const volatile void __iomem *addr)
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{
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return le16_to_cpu(*(volatile unsigned short __force *)addr);
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}
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static inline unsigned int readl(const volatile void __iomem *addr)
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{
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return le32_to_cpu(*(volatile unsigned int __force *)addr);
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}
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static inline void writeb(unsigned char v, volatile void __iomem *addr)
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{
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*(volatile unsigned char __force *)addr = v;
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}
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static inline void writew(unsigned short v, volatile void __iomem *addr)
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{
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*(volatile unsigned short __force *)addr = cpu_to_le16(v);
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}
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static inline void writel(unsigned int v, volatile void __iomem *addr)
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{
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*(volatile unsigned int __force *)addr = cpu_to_le32(v);
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}
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/* ioread and iowrite variants. thease are for now same as __raw_
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* variants of accessors. we might check for endianess in the feature
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*/
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#define ioread8(addr) __raw_readb((u8 *)(addr))
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#define ioread16(addr) __raw_readw((u16 *)(addr))
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#define ioread32(addr) __raw_readl((u32 *)(addr))
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#define iowrite8(v, addr) __raw_writeb((u8)(v), (u8 *)(addr))
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#define iowrite16(v, addr) __raw_writew((u16)(v), (u16 *)(addr))
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#define iowrite32(v, addr) __raw_writel((u32)(v), (u32 *)(addr))
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/* These are the definitions for the x86 IO instructions
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* inb/inw/inl/outb/outw/outl, the "string" versions
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* insb/insw/insl/outsb/outsw/outsl, and the "pausing" versions
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* inb_p/inw_p/...
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* The macros don't do byte-swapping.
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*/
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#define inb(port) readb((u8 *)((port)))
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#define outb(val, port) writeb((val), (u8 *)((unsigned long)(port)))
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#define inw(port) readw((u16 *)((port)))
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#define outw(val, port) writew((val), (u16 *)((unsigned long)(port)))
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#define inl(port) readl((u32 *)((port)))
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#define outl(val, port) writel((val), (u32 *)((unsigned long)(port)))
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#define inb_p(port) inb((port))
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#define outb_p(val, port) outb((val), (port))
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#define inw_p(port) inw((port))
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#define outw_p(val, port) outw((val), (port))
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#define inl_p(port) inl((port))
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#define outl_p(val, port) outl((val), (port))
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#define memset_io(a, b, c) memset((void *)(a), (b), (c))
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#define memcpy_fromio(a, b, c) memcpy((a), (void *)(b), (c))
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#define memcpy_toio(a, b, c) memcpy((void *)(a), (b), (c))
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#ifdef CONFIG_MMU
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#define mm_ptov(addr) ((void *)__phys_to_virt(addr))
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#define mm_vtop(addr) ((unsigned long)__virt_to_phys(addr))
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#define phys_to_virt(addr) ((void *)__phys_to_virt(addr))
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#define virt_to_phys(addr) ((unsigned long)__virt_to_phys(addr))
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#define virt_to_bus(addr) ((unsigned long)__virt_to_phys(addr))
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#define __page_address(page) \
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(PAGE_OFFSET + (((page) - mem_map) << PAGE_SHIFT))
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#define page_to_phys(page) virt_to_phys((void *)__page_address(page))
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#define page_to_bus(page) (page_to_phys(page))
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#define bus_to_virt(addr) (phys_to_virt(addr))
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extern void iounmap(void *addr);
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/*extern void *__ioremap(phys_addr_t address, unsigned long size,
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unsigned long flags);*/
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extern void __iomem *ioremap(phys_addr_t address, unsigned long size);
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#define ioremap_writethrough(addr, size) ioremap((addr), (size))
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#define ioremap_nocache(addr, size) ioremap((addr), (size))
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#define ioremap_fullcache(addr, size) ioremap((addr), (size))
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#else /* CONFIG_MMU */
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/**
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* virt_to_phys - map virtual addresses to physical
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* @address: address to remap
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*
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* The returned physical address is the physical (CPU) mapping for
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* the memory address given. It is only valid to use this function on
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* addresses directly mapped or allocated via kmalloc.
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*
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* This function does not give bus mappings for DMA transfers. In
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* almost all conceivable cases a device driver should not be using
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* this function
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*/
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static inline unsigned long __iomem virt_to_phys(volatile void *address)
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{
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return __pa((unsigned long)address);
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}
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#define virt_to_bus virt_to_phys
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/**
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* phys_to_virt - map physical address to virtual
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* @address: address to remap
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*
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* The returned virtual address is a current CPU mapping for
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* the memory address given. It is only valid to use this function on
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* addresses that have a kernel mapping
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*
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* This function does not handle bus mappings for DMA transfers. In
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* almost all conceivable cases a device driver should not be using
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* this function
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*/
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static inline void *phys_to_virt(unsigned long address)
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{
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return (void *)__va(address);
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}
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#define bus_to_virt(a) phys_to_virt(a)
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static inline void __iomem *__ioremap(phys_addr_t address, unsigned long size,
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unsigned long flags)
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{
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return (void *)address;
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}
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#define ioremap(physaddr, size) ((void __iomem *)(unsigned long)(physaddr))
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#define iounmap(addr) ((void)0)
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#define ioremap_nocache(physaddr, size) ioremap(physaddr, size)
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#endif /* CONFIG_MMU */
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/*
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* Convert a physical pointer to a virtual kernel pointer for /dev/mem
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* access
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*/
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#define xlate_dev_mem_ptr(p) __va(p)
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/*
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* Convert a virtual cached pointer to an uncached pointer
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*/
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#define xlate_dev_kmem_ptr(p) p
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/*
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* Big Endian
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*/
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#define out_be32(a, v) __raw_writel((v), (void __iomem __force *)(a))
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#define out_be16(a, v) __raw_writew((v), (a))
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#define in_be32(a) __raw_readl((const void __iomem __force *)(a))
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#define in_be16(a) __raw_readw(a)
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#define writel_be(v, a) out_be32((__force unsigned *)a, v)
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#define readl_be(a) in_be32((__force unsigned *)a)
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/*
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* Little endian
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*/
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#define out_le32(a, v) __raw_writel(__cpu_to_le32(v), (a));
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#define out_le16(a, v) __raw_writew(__cpu_to_le16(v), (a))
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#define in_le32(a) __le32_to_cpu(__raw_readl(a))
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#define in_le16(a) __le16_to_cpu(__raw_readw(a))
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/* Byte ops */
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#define out_8(a, v) __raw_writeb((v), (a))
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#define in_8(a) __raw_readb(a)
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/* FIXME */
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static inline void __iomem *ioport_map(unsigned long port, unsigned int len)
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{
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return (void __iomem *) (port);
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}
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static inline void ioport_unmap(void __iomem *addr)
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{
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/* Nothing to do */
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}
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#endif /* _ASM_MICROBLAZE_IO_H */
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