diff options
Diffstat (limited to 'include/asm-arm/arch-ixp4xx/io.h')
| -rw-r--r-- | include/asm-arm/arch-ixp4xx/io.h | 569 |
1 files changed, 0 insertions, 569 deletions
diff --git a/include/asm-arm/arch-ixp4xx/io.h b/include/asm-arm/arch-ixp4xx/io.h deleted file mode 100644 index 8e7426081f0..00000000000 --- a/include/asm-arm/arch-ixp4xx/io.h +++ /dev/null @@ -1,569 +0,0 @@ -/* - * linux/include/asm-arm/arch-ixp4xx/io.h - * - * Author: Deepak Saxena <dsaxena@plexity.net> - * - * Copyright (C) 2002-2005 MontaVista Software, Inc. - * - * 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. - */ - -#ifndef __ASM_ARM_ARCH_IO_H -#define __ASM_ARM_ARCH_IO_H - -#include <linux/bitops.h> - -#include <asm/arch/hardware.h> - -#define IO_SPACE_LIMIT 0xffff0000 - -extern int (*ixp4xx_pci_read)(u32 addr, u32 cmd, u32* data); -extern int ixp4xx_pci_write(u32 addr, u32 cmd, u32 data); - - -/* - * IXP4xx provides two methods of accessing PCI memory space: - * - * 1) A direct mapped window from 0x48000000 to 0x4bffffff (64MB). - * To access PCI via this space, we simply ioremap() the BAR - * into the kernel and we can use the standard read[bwl]/write[bwl] - * macros. This is the preffered method due to speed but it - * limits the system to just 64MB of PCI memory. This can be - * problamatic if using video cards and other memory-heavy - * targets. - * - * 2) If > 64MB of memory space is required, the IXP4xx can be configured - * to use indirect registers to access PCI (as we do below for I/O - * transactions). This allows for up to 128MB (0x48000000 to 0x4fffffff) - * of memory on the bus. The disadvantage of this is that every - * PCI access requires three local register accesses plus a spinlock, - * but in some cases the performance hit is acceptable. In addition, - * you cannot mmap() PCI devices in this case. - * - */ -#ifndef CONFIG_IXP4XX_INDIRECT_PCI - -#define __mem_pci(a) (a) - -#else - -#include <linux/mm.h> - -/* - * In the case of using indirect PCI, we simply return the actual PCI - * address and our read/write implementation use that to drive the - * access registers. If something outside of PCI is ioremap'd, we - * fallback to the default. - */ -static inline void __iomem * -__ixp4xx_ioremap(unsigned long addr, size_t size, unsigned int mtype) -{ - if((addr < PCIBIOS_MIN_MEM) || (addr > 0x4fffffff)) - return __arm_ioremap(addr, size, mtype); - - return (void __iomem *)addr; -} - -static inline void -__ixp4xx_iounmap(void __iomem *addr) -{ - if ((__force u32)addr >= VMALLOC_START) - __iounmap(addr); -} - -#define __arch_ioremap(a, s, f) __ixp4xx_ioremap(a, s, f) -#define __arch_iounmap(a) __ixp4xx_iounmap(a) - -#define writeb(v, p) __ixp4xx_writeb(v, p) -#define writew(v, p) __ixp4xx_writew(v, p) -#define writel(v, p) __ixp4xx_writel(v, p) - -#define writesb(p, v, l) __ixp4xx_writesb(p, v, l) -#define writesw(p, v, l) __ixp4xx_writesw(p, v, l) -#define writesl(p, v, l) __ixp4xx_writesl(p, v, l) - -#define readb(p) __ixp4xx_readb(p) -#define readw(p) __ixp4xx_readw(p) -#define readl(p) __ixp4xx_readl(p) - -#define readsb(p, v, l) __ixp4xx_readsb(p, v, l) -#define readsw(p, v, l) __ixp4xx_readsw(p, v, l) -#define readsl(p, v, l) __ixp4xx_readsl(p, v, l) - -static inline void -__ixp4xx_writeb(u8 value, volatile void __iomem *p) -{ - u32 addr = (u32)p; - u32 n, byte_enables, data; - - if (addr >= VMALLOC_START) { - __raw_writeb(value, addr); - return; - } - - n = addr % 4; - byte_enables = (0xf & ~BIT(n)) << IXP4XX_PCI_NP_CBE_BESL; - data = value << (8*n); - ixp4xx_pci_write(addr, byte_enables | NP_CMD_MEMWRITE, data); -} - -static inline void -__ixp4xx_writesb(volatile void __iomem *bus_addr, const u8 *vaddr, int count) -{ - while (count--) - writeb(*vaddr++, bus_addr); -} - -static inline void -__ixp4xx_writew(u16 value, volatile void __iomem *p) -{ - u32 addr = (u32)p; - u32 n, byte_enables, data; - - if (addr >= VMALLOC_START) { - __raw_writew(value, addr); - return; - } - - n = addr % 4; - byte_enables = (0xf & ~(BIT(n) | BIT(n+1))) << IXP4XX_PCI_NP_CBE_BESL; - data = value << (8*n); - ixp4xx_pci_write(addr, byte_enables | NP_CMD_MEMWRITE, data); -} - -static inline void -__ixp4xx_writesw(volatile void __iomem *bus_addr, const u16 *vaddr, int count) -{ - while (count--) - writew(*vaddr++, bus_addr); -} - -static inline void -__ixp4xx_writel(u32 value, volatile void __iomem *p) -{ - u32 addr = (__force u32)p; - if (addr >= VMALLOC_START) { - __raw_writel(value, p); - return; - } - - ixp4xx_pci_write(addr, NP_CMD_MEMWRITE, value); -} - -static inline void -__ixp4xx_writesl(volatile void __iomem *bus_addr, const u32 *vaddr, int count) -{ - while (count--) - writel(*vaddr++, bus_addr); -} - -static inline unsigned char -__ixp4xx_readb(const volatile void __iomem *p) -{ - u32 addr = (u32)p; - u32 n, byte_enables, data; - - if (addr >= VMALLOC_START) - return __raw_readb(addr); - - n = addr % 4; - byte_enables = (0xf & ~BIT(n)) << IXP4XX_PCI_NP_CBE_BESL; - if (ixp4xx_pci_read(addr, byte_enables | NP_CMD_MEMREAD, &data)) - return 0xff; - - return data >> (8*n); -} - -static inline void -__ixp4xx_readsb(const volatile void __iomem *bus_addr, u8 *vaddr, u32 count) -{ - while (count--) - *vaddr++ = readb(bus_addr); -} - -static inline unsigned short -__ixp4xx_readw(const volatile void __iomem *p) -{ - u32 addr = (u32)p; - u32 n, byte_enables, data; - - if (addr >= VMALLOC_START) - return __raw_readw(addr); - - n = addr % 4; - byte_enables = (0xf & ~(BIT(n) | BIT(n+1))) << IXP4XX_PCI_NP_CBE_BESL; - if (ixp4xx_pci_read(addr, byte_enables | NP_CMD_MEMREAD, &data)) - return 0xffff; - - return data>>(8*n); -} - -static inline void -__ixp4xx_readsw(const volatile void __iomem *bus_addr, u16 *vaddr, u32 count) -{ - while (count--) - *vaddr++ = readw(bus_addr); -} - -static inline unsigned long -__ixp4xx_readl(const volatile void __iomem *p) -{ - u32 addr = (__force u32)p; - u32 data; - - if (addr >= VMALLOC_START) - return __raw_readl(p); - - if (ixp4xx_pci_read(addr, NP_CMD_MEMREAD, &data)) - return 0xffffffff; - - return data; -} - -static inline void -__ixp4xx_readsl(const volatile void __iomem *bus_addr, u32 *vaddr, u32 count) -{ - while (count--) - *vaddr++ = readl(bus_addr); -} - - -/* - * We can use the built-in functions b/c they end up calling writeb/readb - */ -#define memset_io(c,v,l) _memset_io((c),(v),(l)) -#define memcpy_fromio(a,c,l) _memcpy_fromio((a),(c),(l)) -#define memcpy_toio(c,a,l) _memcpy_toio((c),(a),(l)) - -#endif - -#ifndef CONFIG_PCI - -#define __io(v) v - -#else - -/* - * IXP4xx does not have a transparent cpu -> PCI I/O translation - * window. Instead, it has a set of registers that must be tweaked - * with the proper byte lanes, command types, and address for the - * transaction. This means that we need to override the default - * I/O functions. - */ -#define outb(p, v) __ixp4xx_outb(p, v) -#define outw(p, v) __ixp4xx_outw(p, v) -#define outl(p, v) __ixp4xx_outl(p, v) - -#define outsb(p, v, l) __ixp4xx_outsb(p, v, l) -#define outsw(p, v, l) __ixp4xx_outsw(p, v, l) -#define outsl(p, v, l) __ixp4xx_outsl(p, v, l) - -#define inb(p) __ixp4xx_inb(p) -#define inw(p) __ixp4xx_inw(p) -#define inl(p) __ixp4xx_inl(p) - -#define insb(p, v, l) __ixp4xx_insb(p, v, l) -#define insw(p, v, l) __ixp4xx_insw(p, v, l) -#define insl(p, v, l) __ixp4xx_insl(p, v, l) - - -static inline void -__ixp4xx_outb(u8 value, u32 addr) -{ - u32 n, byte_enables, data; - n = addr % 4; - byte_enables = (0xf & ~BIT(n)) << IXP4XX_PCI_NP_CBE_BESL; - data = value << (8*n); - ixp4xx_pci_write(addr, byte_enables | NP_CMD_IOWRITE, data); -} - -static inline void -__ixp4xx_outsb(u32 io_addr, const u8 *vaddr, u32 count) -{ - while (count--) - outb(*vaddr++, io_addr); -} - -static inline void -__ixp4xx_outw(u16 value, u32 addr) -{ - u32 n, byte_enables, data; - n = addr % 4; - byte_enables = (0xf & ~(BIT(n) | BIT(n+1))) << IXP4XX_PCI_NP_CBE_BESL; - data = value << (8*n); - ixp4xx_pci_write(addr, byte_enables | NP_CMD_IOWRITE, data); -} - -static inline void -__ixp4xx_outsw(u32 io_addr, const u16 *vaddr, u32 count) -{ - while (count--) - outw(cpu_to_le16(*vaddr++), io_addr); -} - -static inline void -__ixp4xx_outl(u32 value, u32 addr) -{ - ixp4xx_pci_write(addr, NP_CMD_IOWRITE, value); -} - -static inline void -__ixp4xx_outsl(u32 io_addr, const u32 *vaddr, u32 count) -{ - while (count--) - outl(*vaddr++, io_addr); -} - -static inline u8 -__ixp4xx_inb(u32 addr) -{ - u32 n, byte_enables, data; - n = addr % 4; - byte_enables = (0xf & ~BIT(n)) << IXP4XX_PCI_NP_CBE_BESL; - if (ixp4xx_pci_read(addr, byte_enables | NP_CMD_IOREAD, &data)) - return 0xff; - - return data >> (8*n); -} - -static inline void -__ixp4xx_insb(u32 io_addr, u8 *vaddr, u32 count) -{ - while (count--) - *vaddr++ = inb(io_addr); -} - -static inline u16 -__ixp4xx_inw(u32 addr) -{ - u32 n, byte_enables, data; - n = addr % 4; - byte_enables = (0xf & ~(BIT(n) | BIT(n+1))) << IXP4XX_PCI_NP_CBE_BESL; - if (ixp4xx_pci_read(addr, byte_enables | NP_CMD_IOREAD, &data)) - return 0xffff; - - return data>>(8*n); -} - -static inline void -__ixp4xx_insw(u32 io_addr, u16 *vaddr, u32 count) -{ - while (count--) - *vaddr++ = le16_to_cpu(inw(io_addr)); -} - -static inline u32 -__ixp4xx_inl(u32 addr) -{ - u32 data; - if (ixp4xx_pci_read(addr, NP_CMD_IOREAD, &data)) - return 0xffffffff; - - return data; -} - -static inline void -__ixp4xx_insl(u32 io_addr, u32 *vaddr, u32 count) -{ - while (count--) - *vaddr++ = inl(io_addr); -} - -#define PIO_OFFSET 0x10000UL -#define PIO_MASK 0x0ffffUL - -#define __is_io_address(p) (((unsigned long)p >= PIO_OFFSET) && \ - ((unsigned long)p <= (PIO_MASK + PIO_OFFSET))) -static inline unsigned int -__ixp4xx_ioread8(const void __iomem *addr) -{ - unsigned long port = (unsigned long __force)addr; - if (__is_io_address(port)) - return (unsigned int)__ixp4xx_inb(port & PIO_MASK); - else -#ifndef CONFIG_IXP4XX_INDIRECT_PCI - return (unsigned int)__raw_readb(port); -#else - return (unsigned int)__ixp4xx_readb(addr); -#endif -} - -static inline void -__ixp4xx_ioread8_rep(const void __iomem *addr, void *vaddr, u32 count) -{ - unsigned long port = (unsigned long __force)addr; - if (__is_io_address(port)) - __ixp4xx_insb(port & PIO_MASK, vaddr, count); - else -#ifndef CONFIG_IXP4XX_INDIRECT_PCI - __raw_readsb(addr, vaddr, count); -#else - __ixp4xx_readsb(addr, vaddr, count); -#endif -} - -static inline unsigned int -__ixp4xx_ioread16(const void __iomem *addr) -{ - unsigned long port = (unsigned long __force)addr; - if (__is_io_address(port)) - return (unsigned int)__ixp4xx_inw(port & PIO_MASK); - else -#ifndef CONFIG_IXP4XX_INDIRECT_PCI - return le16_to_cpu(__raw_readw((u32)port)); -#else - return (unsigned int)__ixp4xx_readw(addr); -#endif -} - -static inline void -__ixp4xx_ioread16_rep(const void __iomem *addr, void *vaddr, u32 count) -{ - unsigned long port = (unsigned long __force)addr; - if (__is_io_address(port)) - __ixp4xx_insw(port & PIO_MASK, vaddr, count); - else -#ifndef CONFIG_IXP4XX_INDIRECT_PCI - __raw_readsw(addr, vaddr, count); -#else - __ixp4xx_readsw(addr, vaddr, count); -#endif -} - -static inline unsigned int -__ixp4xx_ioread32(const void __iomem *addr) -{ - unsigned long port = (unsigned long __force)addr; - if (__is_io_address(port)) - return (unsigned int)__ixp4xx_inl(port & PIO_MASK); - else { -#ifndef CONFIG_IXP4XX_INDIRECT_PCI - return le32_to_cpu((__force __le32)__raw_readl(addr)); -#else - return (unsigned int)__ixp4xx_readl(addr); -#endif - } -} - -static inline void -__ixp4xx_ioread32_rep(const void __iomem *addr, void *vaddr, u32 count) -{ - unsigned long port = (unsigned long __force)addr; - if (__is_io_address(port)) - __ixp4xx_insl(port & PIO_MASK, vaddr, count); - else -#ifndef CONFIG_IXP4XX_INDIRECT_PCI - __raw_readsl(addr, vaddr, count); -#else - __ixp4xx_readsl(addr, vaddr, count); -#endif -} - -static inline void -__ixp4xx_iowrite8(u8 value, void __iomem *addr) -{ - unsigned long port = (unsigned long __force)addr; - if (__is_io_address(port)) - __ixp4xx_outb(value, port & PIO_MASK); - else -#ifndef CONFIG_IXP4XX_INDIRECT_PCI - __raw_writeb(value, port); -#else - __ixp4xx_writeb(value, addr); -#endif -} - -static inline void -__ixp4xx_iowrite8_rep(void __iomem *addr, const void *vaddr, u32 count) -{ - unsigned long port = (unsigned long __force)addr; - if (__is_io_address(port)) - __ixp4xx_outsb(port & PIO_MASK, vaddr, count); - else -#ifndef CONFIG_IXP4XX_INDIRECT_PCI - __raw_writesb(addr, vaddr, count); -#else - __ixp4xx_writesb(addr, vaddr, count); -#endif -} - -static inline void -__ixp4xx_iowrite16(u16 value, void __iomem *addr) -{ - unsigned long port = (unsigned long __force)addr; - if (__is_io_address(port)) - __ixp4xx_outw(value, port & PIO_MASK); - else -#ifndef CONFIG_IXP4XX_INDIRECT_PCI - __raw_writew(cpu_to_le16(value), addr); -#else - __ixp4xx_writew(value, addr); -#endif -} - -static inline void -__ixp4xx_iowrite16_rep(void __iomem *addr, const void *vaddr, u32 count) -{ - unsigned long port = (unsigned long __force)addr; - if (__is_io_address(port)) - __ixp4xx_outsw(port & PIO_MASK, vaddr, count); - else -#ifndef CONFIG_IXP4XX_INDIRECT_PCI - __raw_writesw(addr, vaddr, count); -#else - __ixp4xx_writesw(addr, vaddr, count); -#endif -} - -static inline void -__ixp4xx_iowrite32(u32 value, void __iomem *addr) -{ - unsigned long port = (unsigned long __force)addr; - if (__is_io_address(port)) - __ixp4xx_outl(value, port & PIO_MASK); - else -#ifndef CONFIG_IXP4XX_INDIRECT_PCI - __raw_writel((u32 __force)cpu_to_le32(value), addr); -#else - __ixp4xx_writel(value, addr); -#endif -} - -static inline void -__ixp4xx_iowrite32_rep(void __iomem *addr, const void *vaddr, u32 count) -{ - unsigned long port = (unsigned long __force)addr; - if (__is_io_address(port)) - __ixp4xx_outsl(port & PIO_MASK, vaddr, count); - else -#ifndef CONFIG_IXP4XX_INDIRECT_PCI - __raw_writesl(addr, vaddr, count); -#else - __ixp4xx_writesl(addr, vaddr, count); -#endif -} - -#define ioread8(p) __ixp4xx_ioread8(p) -#define ioread16(p) __ixp4xx_ioread16(p) -#define ioread32(p) __ixp4xx_ioread32(p) - -#define ioread8_rep(p, v, c) __ixp4xx_ioread8_rep(p, v, c) -#define ioread16_rep(p, v, c) __ixp4xx_ioread16_rep(p, v, c) -#define ioread32_rep(p, v, c) __ixp4xx_ioread32_rep(p, v, c) - -#define iowrite8(v,p) __ixp4xx_iowrite8(v,p) -#define iowrite16(v,p) __ixp4xx_iowrite16(v,p) -#define iowrite32(v,p) __ixp4xx_iowrite32(v,p) - -#define iowrite8_rep(p, v, c) __ixp4xx_iowrite8_rep(p, v, c) -#define iowrite16_rep(p, v, c) __ixp4xx_iowrite16_rep(p, v, c) -#define iowrite32_rep(p, v, c) __ixp4xx_iowrite32_rep(p, v, c) - -#define ioport_map(port, nr) ((void __iomem*)(port + PIO_OFFSET)) -#define ioport_unmap(addr) -#endif // !CONFIG_PCI - -#endif // __ASM_ARM_ARCH_IO_H - |