diff options
Diffstat (limited to 'include/asm-ppc/io.h')
| -rw-r--r-- | include/asm-ppc/io.h | 502 |
1 files changed, 0 insertions, 502 deletions
diff --git a/include/asm-ppc/io.h b/include/asm-ppc/io.h deleted file mode 100644 index a0d409a5d80..00000000000 --- a/include/asm-ppc/io.h +++ /dev/null @@ -1,502 +0,0 @@ -#ifdef __KERNEL__ -#ifndef _PPC_IO_H -#define _PPC_IO_H - -#include <linux/string.h> -#include <linux/types.h> - -#include <asm/page.h> -#include <asm/byteorder.h> -#include <asm/synch.h> -#include <asm/mmu.h> - -#define SIO_CONFIG_RA 0x398 -#define SIO_CONFIG_RD 0x399 - -#define SLOW_DOWN_IO - -#define PMAC_ISA_MEM_BASE 0 -#define PMAC_PCI_DRAM_OFFSET 0 -#define CHRP_ISA_IO_BASE 0xf8000000 -#define CHRP_ISA_MEM_BASE 0xf7000000 -#define CHRP_PCI_DRAM_OFFSET 0 -#define PREP_ISA_IO_BASE 0x80000000 -#define PREP_ISA_MEM_BASE 0xc0000000 -#define PREP_PCI_DRAM_OFFSET 0x80000000 - -#if defined(CONFIG_4xx) -#include <asm/ibm4xx.h> -#elif defined(CONFIG_8xx) -#include <asm/mpc8xx.h> -#elif defined(CONFIG_8260) -#include <asm/mpc8260.h> -#elif !defined(CONFIG_PCI) -#define _IO_BASE 0 -#define _ISA_MEM_BASE 0 -#define PCI_DRAM_OFFSET 0 -#else /* Everyone else */ -#define _IO_BASE isa_io_base -#define _ISA_MEM_BASE isa_mem_base -#define PCI_DRAM_OFFSET pci_dram_offset -#endif /* Platform-dependent I/O */ - -#define ___IO_BASE ((void __iomem *)_IO_BASE) -extern unsigned long isa_io_base; -extern unsigned long isa_mem_base; -extern unsigned long pci_dram_offset; - -/* - * 8, 16 and 32 bit, big and little endian I/O operations, with barrier. - * - * Read operations have additional twi & isync to make sure the read - * is actually performed (i.e. the data has come back) before we start - * executing any following instructions. - */ -extern inline int in_8(const volatile unsigned char __iomem *addr) -{ - int ret; - - __asm__ __volatile__( - "sync; lbz%U1%X1 %0,%1;\n" - "twi 0,%0,0;\n" - "isync" : "=r" (ret) : "m" (*addr)); - return ret; -} - -extern inline void out_8(volatile unsigned char __iomem *addr, int val) -{ - __asm__ __volatile__("stb%U0%X0 %1,%0; eieio" : "=m" (*addr) : "r" (val)); -} - -extern inline int in_le16(const volatile unsigned short __iomem *addr) -{ - int ret; - - __asm__ __volatile__("sync; lhbrx %0,0,%1;\n" - "twi 0,%0,0;\n" - "isync" : "=r" (ret) : - "r" (addr), "m" (*addr)); - return ret; -} - -extern inline int in_be16(const volatile unsigned short __iomem *addr) -{ - int ret; - - __asm__ __volatile__("sync; lhz%U1%X1 %0,%1;\n" - "twi 0,%0,0;\n" - "isync" : "=r" (ret) : "m" (*addr)); - return ret; -} - -extern inline void out_le16(volatile unsigned short __iomem *addr, int val) -{ - __asm__ __volatile__("sync; sthbrx %1,0,%2" : "=m" (*addr) : - "r" (val), "r" (addr)); -} - -extern inline void out_be16(volatile unsigned short __iomem *addr, int val) -{ - __asm__ __volatile__("sync; sth%U0%X0 %1,%0" : "=m" (*addr) : "r" (val)); -} - -extern inline unsigned in_le32(const volatile unsigned __iomem *addr) -{ - unsigned ret; - - __asm__ __volatile__("sync; lwbrx %0,0,%1;\n" - "twi 0,%0,0;\n" - "isync" : "=r" (ret) : - "r" (addr), "m" (*addr)); - return ret; -} - -extern inline unsigned in_be32(const volatile unsigned __iomem *addr) -{ - unsigned ret; - - __asm__ __volatile__("sync; lwz%U1%X1 %0,%1;\n" - "twi 0,%0,0;\n" - "isync" : "=r" (ret) : "m" (*addr)); - return ret; -} - -extern inline void out_le32(volatile unsigned __iomem *addr, int val) -{ - __asm__ __volatile__("sync; stwbrx %1,0,%2" : "=m" (*addr) : - "r" (val), "r" (addr)); -} - -extern inline void out_be32(volatile unsigned __iomem *addr, int val) -{ - __asm__ __volatile__("sync; stw%U0%X0 %1,%0" : "=m" (*addr) : "r" (val)); -} -#if defined (CONFIG_8260_PCI9) -#define readb(addr) in_8((volatile u8 *)(addr)) -#define writeb(b,addr) out_8((volatile u8 *)(addr), (b)) -#else -static inline __u8 readb(const volatile void __iomem *addr) -{ - return in_8(addr); -} -static inline void writeb(__u8 b, volatile void __iomem *addr) -{ - out_8(addr, b); -} -#endif - -#if defined (CONFIG_8260_PCI9) -/* Use macros if PCI9 workaround enabled */ -#define readw(addr) in_le16((volatile u16 *)(addr)) -#define readl(addr) in_le32((volatile u32 *)(addr)) -#define writew(b,addr) out_le16((volatile u16 *)(addr),(b)) -#define writel(b,addr) out_le32((volatile u32 *)(addr),(b)) -#else -static inline __u16 readw(const volatile void __iomem *addr) -{ - return in_le16(addr); -} -static inline __u32 readl(const volatile void __iomem *addr) -{ - return in_le32(addr); -} -static inline void writew(__u16 b, volatile void __iomem *addr) -{ - out_le16(addr, b); -} -static inline void writel(__u32 b, volatile void __iomem *addr) -{ - out_le32(addr, b); -} -#endif /* CONFIG_8260_PCI9 */ - -#define readb_relaxed(addr) readb(addr) -#define readw_relaxed(addr) readw(addr) -#define readl_relaxed(addr) readl(addr) - -static inline __u8 __raw_readb(const volatile void __iomem *addr) -{ - return *(__force volatile __u8 *)(addr); -} -static inline __u16 __raw_readw(const volatile void __iomem *addr) -{ - return *(__force volatile __u16 *)(addr); -} -static inline __u32 __raw_readl(const volatile void __iomem *addr) -{ - return *(__force volatile __u32 *)(addr); -} -static inline void __raw_writeb(__u8 b, volatile void __iomem *addr) -{ - *(__force volatile __u8 *)(addr) = b; -} -static inline void __raw_writew(__u16 b, volatile void __iomem *addr) -{ - *(__force volatile __u16 *)(addr) = b; -} -static inline void __raw_writel(__u32 b, volatile void __iomem *addr) -{ - *(__force volatile __u32 *)(addr) = b; -} - -#define mmiowb() - -/* - * The insw/outsw/insl/outsl macros don't do byte-swapping. - * They are only used in practice for transferring buffers which - * are arrays of bytes, and byte-swapping is not appropriate in - * that case. - paulus - */ -#define insb(port, buf, ns) _insb((port)+___IO_BASE, (buf), (ns)) -#define outsb(port, buf, ns) _outsb((port)+___IO_BASE, (buf), (ns)) -#define insw(port, buf, ns) _insw_ns((port)+___IO_BASE, (buf), (ns)) -#define outsw(port, buf, ns) _outsw_ns((port)+___IO_BASE, (buf), (ns)) -#define insl(port, buf, nl) _insl_ns((port)+___IO_BASE, (buf), (nl)) -#define outsl(port, buf, nl) _outsl_ns((port)+___IO_BASE, (buf), (nl)) - -#define readsb(a, b, n) _insb((a), (b), (n)) -#define readsw(a, b, n) _insw_ns((a), (b), (n)) -#define readsl(a, b, n) _insl_ns((a), (b), (n)) -#define writesb(a, b, n) _outsb((a),(b),(n)) -#define writesw(a, b, n) _outsw_ns((a),(b),(n)) -#define writesl(a, b, n) _outsl_ns((a),(b),(n)) - - -/* - * On powermacs and 8xx we will get a machine check exception - * if we try to read data from a non-existent I/O port. Because - * the machine check is an asynchronous exception, it isn't - * well-defined which instruction SRR0 will point to when the - * exception occurs. - * With the sequence below (twi; isync; nop), we have found that - * the machine check occurs on one of the three instructions on - * all PPC implementations tested so far. The twi and isync are - * needed on the 601 (in fact twi; sync works too), the isync and - * nop are needed on 604[e|r], and any of twi, sync or isync will - * work on 603[e], 750, 74xx. - * The twi creates an explicit data dependency on the returned - * value which seems to be needed to make the 601 wait for the - * load to finish. - */ - -#define __do_in_asm(name, op) \ -extern __inline__ unsigned int name(unsigned int port) \ -{ \ - unsigned int x; \ - __asm__ __volatile__( \ - "sync\n" \ - "0:" op " %0,0,%1\n" \ - "1: twi 0,%0,0\n" \ - "2: isync\n" \ - "3: nop\n" \ - "4:\n" \ - ".section .fixup,\"ax\"\n" \ - "5: li %0,-1\n" \ - " b 4b\n" \ - ".previous\n" \ - ".section __ex_table,\"a\"\n" \ - " .align 2\n" \ - " .long 0b,5b\n" \ - " .long 1b,5b\n" \ - " .long 2b,5b\n" \ - " .long 3b,5b\n" \ - ".previous" \ - : "=&r" (x) \ - : "r" (port + ___IO_BASE)); \ - return x; \ -} - -#define __do_out_asm(name, op) \ -extern __inline__ void name(unsigned int val, unsigned int port) \ -{ \ - __asm__ __volatile__( \ - "sync\n" \ - "0:" op " %0,0,%1\n" \ - "1: sync\n" \ - "2:\n" \ - ".section __ex_table,\"a\"\n" \ - " .align 2\n" \ - " .long 0b,2b\n" \ - " .long 1b,2b\n" \ - ".previous" \ - : : "r" (val), "r" (port + ___IO_BASE)); \ -} - -__do_out_asm(outb, "stbx") -#if defined (CONFIG_8260_PCI9) -/* in asm cannot be defined if PCI9 workaround is used */ -#define inb(port) in_8((port)+___IO_BASE) -#define inw(port) in_le16((port)+___IO_BASE) -#define inl(port) in_le32((port)+___IO_BASE) -__do_out_asm(outw, "sthbrx") -__do_out_asm(outl, "stwbrx") -#else -__do_in_asm(inb, "lbzx") -__do_in_asm(inw, "lhbrx") -__do_in_asm(inl, "lwbrx") -__do_out_asm(outw, "sthbrx") -__do_out_asm(outl, "stwbrx") - -#endif - -#define inb_p(port) inb((port)) -#define outb_p(val, port) outb((val), (port)) -#define inw_p(port) inw((port)) -#define outw_p(val, port) outw((val), (port)) -#define inl_p(port) inl((port)) -#define outl_p(val, port) outl((val), (port)) - -extern void _insb(const volatile u8 __iomem *addr, void *buf, long count); -extern void _outsb(volatile u8 __iomem *addr,const void *buf,long count); -extern void _insw_ns(const volatile u16 __iomem *addr, void *buf, long count); -extern void _outsw_ns(volatile u16 __iomem *addr, const void *buf, long count); -extern void _insl_ns(const volatile u32 __iomem *addr, void *buf, long count); -extern void _outsl_ns(volatile u32 __iomem *addr, const void *buf, long count); - - -#define IO_SPACE_LIMIT ~0 - -#if defined (CONFIG_8260_PCI9) -#define memset_io(a,b,c) memset((void *)(a),(b),(c)) -#define memcpy_fromio(a,b,c) memcpy((a),(void *)(b),(c)) -#define memcpy_toio(a,b,c) memcpy((void *)(a),(b),(c)) -#else -static inline void memset_io(volatile void __iomem *addr, unsigned char val, int count) -{ - memset((void __force *)addr, val, count); -} -static inline void memcpy_fromio(void *dst,const volatile void __iomem *src, int count) -{ - memcpy(dst, (void __force *) src, count); -} -static inline void memcpy_toio(volatile void __iomem *dst, const void *src, int count) -{ - memcpy((void __force *) dst, src, count); -} -#endif - -/* - * Map in an area of physical address space, for accessing - * I/O devices etc. - */ -extern void __iomem *__ioremap(phys_addr_t address, unsigned long size, - unsigned long flags); -extern void __iomem *ioremap(phys_addr_t address, unsigned long size); -#ifdef CONFIG_44x -extern void __iomem *ioremap64(unsigned long long address, unsigned long size); -#endif -#define ioremap_nocache(addr, size) ioremap((addr), (size)) -extern void iounmap(volatile void __iomem *addr); -extern unsigned long iopa(unsigned long addr); -extern void io_block_mapping(unsigned long virt, phys_addr_t phys, - unsigned int size, int flags); - -/* - * The PCI bus is inherently Little-Endian. The PowerPC is being - * run Big-Endian. Thus all values which cross the [PCI] barrier - * must be endian-adjusted. Also, the local DRAM has a different - * address from the PCI point of view, thus buffer addresses also - * have to be modified [mapped] appropriately. - */ -extern inline unsigned long virt_to_bus(volatile void * address) -{ - if (address == (void *)0) - return 0; - return (unsigned long)address - KERNELBASE + PCI_DRAM_OFFSET; -} - -extern inline void * bus_to_virt(unsigned long address) -{ - if (address == 0) - return NULL; - return (void *)(address - PCI_DRAM_OFFSET + KERNELBASE); -} - -/* - * Change virtual addresses to physical addresses and vv, for - * addresses in the area where the kernel has the RAM mapped. - */ -extern inline unsigned long virt_to_phys(volatile void * address) -{ - return (unsigned long) address - KERNELBASE; -} - -extern inline void * phys_to_virt(unsigned long address) -{ - return (void *) (address + KERNELBASE); -} - -/* - * Change "struct page" to physical address. - */ -#define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT) -#define page_to_bus(page) (page_to_phys(page) + PCI_DRAM_OFFSET) - -/* Enforce in-order execution of data I/O. - * No distinction between read/write on PPC; use eieio for all three. - */ -#define iobarrier_rw() eieio() -#define iobarrier_r() eieio() -#define iobarrier_w() eieio() - -/* - * Here comes the ppc implementation of the IOMAP - * interfaces. - */ -static inline unsigned int ioread8(void __iomem *addr) -{ - return readb(addr); -} - -static inline unsigned int ioread16(void __iomem *addr) -{ - return readw(addr); -} - -static inline unsigned int ioread32(void __iomem *addr) -{ - return readl(addr); -} - -static inline void iowrite8(u8 val, void __iomem *addr) -{ - writeb(val, addr); -} - -static inline void iowrite16(u16 val, void __iomem *addr) -{ - writew(val, addr); -} - -static inline void iowrite32(u32 val, void __iomem *addr) -{ - writel(val, addr); -} - -static inline void ioread8_rep(void __iomem *addr, void *dst, unsigned long count) -{ - _insb(addr, dst, count); -} - -static inline void ioread16_rep(void __iomem *addr, void *dst, unsigned long count) -{ - _insw_ns(addr, dst, count); -} - -static inline void ioread32_rep(void __iomem *addr, void *dst, unsigned long count) -{ - _insl_ns(addr, dst, count); -} - -static inline void iowrite8_rep(void __iomem *addr, const void *src, unsigned long count) -{ - _outsb(addr, src, count); -} - -static inline void iowrite16_rep(void __iomem *addr, const void *src, unsigned long count) -{ - _outsw_ns(addr, src, count); -} - -static inline void iowrite32_rep(void __iomem *addr, const void *src, unsigned long count) -{ - _outsl_ns(addr, src, count); -} - -/* Create a virtual mapping cookie for an IO port range */ -extern void __iomem *ioport_map(unsigned long port, unsigned int nr); -extern void ioport_unmap(void __iomem *); - -/* Create a virtual mapping cookie for a PCI BAR (memory or IO) */ -struct pci_dev; -extern void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max); -extern void pci_iounmap(struct pci_dev *dev, void __iomem *); - -#endif /* _PPC_IO_H */ - -#ifdef CONFIG_8260_PCI9 -#include <asm/mpc8260_pci9.h> -#endif - -/* - * 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 - -/* access ports */ -#define setbits32(_addr, _v) out_be32((_addr), in_be32(_addr) | (_v)) -#define clrbits32(_addr, _v) out_be32((_addr), in_be32(_addr) & ~(_v)) - -#define setbits16(_addr, _v) out_be16((_addr), in_be16(_addr) | (_v)) -#define clrbits16(_addr, _v) out_be16((_addr), in_be16(_addr) & ~(_v)) - -#define setbits8(_addr, _v) out_8((_addr), in_8(_addr) | (_v)) -#define clrbits8(_addr, _v) out_8((_addr), in_8(_addr) & ~(_v)) - -#endif /* __KERNEL__ */ |