diff options
Diffstat (limited to 'arch/sh/boards/renesas/hs7751rvoip/io.c')
| -rw-r--r-- | arch/sh/boards/renesas/hs7751rvoip/io.c | 310 |
1 files changed, 310 insertions, 0 deletions
diff --git a/arch/sh/boards/renesas/hs7751rvoip/io.c b/arch/sh/boards/renesas/hs7751rvoip/io.c new file mode 100644 index 00000000000..456753d2649 --- /dev/null +++ b/arch/sh/boards/renesas/hs7751rvoip/io.c @@ -0,0 +1,310 @@ +/* + * linux/arch/sh/kernel/io_hs7751rvoip.c + * + * Copyright (C) 2001 Ian da Silva, Jeremy Siegel + * Based largely on io_se.c. + * + * I/O routine for Renesas Technology sales HS7751RVoIP + * + * Initial version only to support LAN access; some + * placeholder code from io_hs7751rvoip.c left in with the + * expectation of later SuperIO and PCMCIA access. + */ + +#include <linux/config.h> +#include <linux/kernel.h> +#include <linux/types.h> +#include <asm/io.h> +#include <asm/hs7751rvoip/hs7751rvoip.h> +#include <asm/addrspace.h> + +#include <linux/module.h> +#include <linux/pci.h> +#include "../../../drivers/pci/pci-sh7751.h" + +extern void *area5_io8_base; /* Area 5 8bit I/O Base address */ +extern void *area6_io8_base; /* Area 6 8bit I/O Base address */ +extern void *area5_io16_base; /* Area 5 16bit I/O Base address */ +extern void *area6_io16_base; /* Area 6 16bit I/O Base address */ + +/* + * The 7751R HS7751RVoIP uses the built-in PCI controller (PCIC) + * of the 7751R processor, and has a SuperIO accessible via the PCI. + * The board also includes a PCMCIA controller on its memory bus, + * like the other Solution Engine boards. + */ + +#define PCIIOBR (volatile long *)PCI_REG(SH7751_PCIIOBR) +#define PCIMBR (volatile long *)PCI_REG(SH7751_PCIMBR) +#define PCI_IO_AREA SH7751_PCI_IO_BASE +#define PCI_MEM_AREA SH7751_PCI_CONFIG_BASE + +#define PCI_IOMAP(adr) (PCI_IO_AREA + (adr & ~SH7751_PCIIOBR_MASK)) + +#if defined(CONFIG_HS7751RVOIP_CODEC) +#define CODEC_IO_BASE 0x1000 +#endif + +#define maybebadio(name,port) \ + printk("bad PC-like io %s for port 0x%lx at 0x%08x\n", \ + #name, (port), (__u32) __builtin_return_address(0)) + +static inline void delay(void) +{ + ctrl_inw(0xa0000000); +} + +static inline unsigned long port2adr(unsigned int port) +{ + if ((0x1f0 <= port && port < 0x1f8) || port == 0x3f6) + if (port == 0x3f6) + return ((unsigned long)area5_io16_base + 0x0c); + else + return ((unsigned long)area5_io16_base + 0x800 + ((port-0x1f0) << 1)); + else + maybebadio(port2adr, (unsigned long)port); + return port; +} + +/* The 7751R HS7751RVoIP seems to have everything hooked */ +/* up pretty normally (nothing on high-bytes only...) so this */ +/* shouldn't be needed */ +static inline int shifted_port(unsigned long port) +{ + /* For IDE registers, value is not shifted */ + if ((0x1f0 <= port && port < 0x1f8) || port == 0x3f6) + return 0; + else + return 1; +} + +#if defined(CONFIG_HS7751RVOIP_CODEC) +static inline int +codec_port(unsigned long port) +{ + if (CODEC_IO_BASE <= port && port < (CODEC_IO_BASE+0x20)) + return 1; + else + return 0; +} +#endif + +/* In case someone configures the kernel w/o PCI support: in that */ +/* scenario, don't ever bother to check for PCI-window addresses */ + +/* NOTE: WINDOW CHECK MAY BE A BIT OFF, HIGH PCIBIOS_MIN_IO WRAPS? */ +#if defined(CONFIG_PCI) +#define CHECK_SH7751_PCIIO(port) \ + ((port >= PCIBIOS_MIN_IO) && (port < (PCIBIOS_MIN_IO + SH7751_PCI_IO_SIZE))) +#else +#define CHECK_SH7751_PCIIO(port) (0) +#endif + +/* + * General outline: remap really low stuff [eventually] to SuperIO, + * stuff in PCI IO space (at or above window at pci.h:PCIBIOS_MIN_IO) + * is mapped through the PCI IO window. Stuff with high bits (PXSEG) + * should be way beyond the window, and is used w/o translation for + * compatibility. + */ +unsigned char hs7751rvoip_inb(unsigned long port) +{ + if (PXSEG(port)) + return *(volatile unsigned char *)port; +#if defined(CONFIG_HS7751RVOIP_CODEC) + else if (codec_port(port)) + return *(volatile unsigned char *)((unsigned long)area6_io8_base+(port-CODEC_IO_BASE)); +#endif + else if (CHECK_SH7751_PCIIO(port) || shifted_port(port)) + return *(volatile unsigned char *)PCI_IOMAP(port); + else + return (*(volatile unsigned short *)port2adr(port) & 0xff); +} + +unsigned char hs7751rvoip_inb_p(unsigned long port) +{ + unsigned char v; + + if (PXSEG(port)) + v = *(volatile unsigned char *)port; +#if defined(CONFIG_HS7751RVOIP_CODEC) + else if (codec_port(port)) + v = *(volatile unsigned char *)((unsigned long)area6_io8_base+(port-CODEC_IO_BASE)); +#endif + else if (CHECK_SH7751_PCIIO(port) || shifted_port(port)) + v = *(volatile unsigned char *)PCI_IOMAP(port); + else + v = (*(volatile unsigned short *)port2adr(port) & 0xff); + delay(); + return v; +} + +unsigned short hs7751rvoip_inw(unsigned long port) +{ + if (PXSEG(port)) + return *(volatile unsigned short *)port; + else if (CHECK_SH7751_PCIIO(port) || shifted_port(port)) + return *(volatile unsigned short *)PCI_IOMAP(port); + else + maybebadio(inw, port); + return 0; +} + +unsigned int hs7751rvoip_inl(unsigned long port) +{ + if (PXSEG(port)) + return *(volatile unsigned long *)port; + else if (CHECK_SH7751_PCIIO(port) || shifted_port(port)) + return *(volatile unsigned long *)PCI_IOMAP(port); + else + maybebadio(inl, port); + return 0; +} + +void hs7751rvoip_outb(unsigned char value, unsigned long port) +{ + + if (PXSEG(port)) + *(volatile unsigned char *)port = value; +#if defined(CONFIG_HS7751RVOIP_CODEC) + else if (codec_port(port)) + *(volatile unsigned cjar *)((unsigned long)area6_io8_base+(port-CODEC_IO_BASE)) = value; +#endif + else if (CHECK_SH7751_PCIIO(port) || shifted_port(port)) + *(unsigned char *)PCI_IOMAP(port) = value; + else + *(volatile unsigned short *)port2adr(port) = value; +} + +void hs7751rvoip_outb_p(unsigned char value, unsigned long port) +{ + if (PXSEG(port)) + *(volatile unsigned char *)port = value; +#if defined(CONFIG_HS7751RVOIP_CODEC) + else if (codec_port(port)) + *(volatile unsigned cjar *)((unsigned long)area6_io8_base+(port-CODEC_IO_BASE)) = value; +#endif + else if (CHECK_SH7751_PCIIO(port) || shifted_port(port)) + *(unsigned char *)PCI_IOMAP(port) = value; + else + *(volatile unsigned short *)port2adr(port) = value; + delay(); +} + +void hs7751rvoip_outw(unsigned short value, unsigned long port) +{ + if (PXSEG(port)) + *(volatile unsigned short *)port = value; + else if (CHECK_SH7751_PCIIO(port) || shifted_port(port)) + *(unsigned short *)PCI_IOMAP(port) = value; + else + maybebadio(outw, port); +} + +void hs7751rvoip_outl(unsigned int value, unsigned long port) +{ + if (PXSEG(port)) + *(volatile unsigned long *)port = value; + else if (CHECK_SH7751_PCIIO(port) || shifted_port(port)) + *((unsigned long *)PCI_IOMAP(port)) = value; + else + maybebadio(outl, port); +} + +void hs7751rvoip_insb(unsigned long port, void *addr, unsigned long count) +{ + if (PXSEG(port)) + while (count--) *((unsigned char *) addr)++ = *(volatile unsigned char *)port; +#if defined(CONFIG_HS7751RVOIP_CODEC) + else if (codec_port(port)) + while (count--) *((unsigned char *) addr)++ = *(volatile unsigned char *)((unsigned long)area6_io8_base+(port-CODEC_IO_BASE)); +#endif + else if (CHECK_SH7751_PCIIO(port) || shifted_port(port)) { + volatile __u8 *bp = (__u8 *)PCI_IOMAP(port); + + while (count--) *((volatile unsigned char *) addr)++ = *bp; + } else { + volatile __u16 *p = (volatile unsigned short *)port2adr(port); + + while (count--) *((unsigned char *) addr)++ = *p & 0xff; + } +} + +void hs7751rvoip_insw(unsigned long port, void *addr, unsigned long count) +{ + volatile __u16 *p; + + if (PXSEG(port)) + p = (volatile unsigned short *)port; + else if (CHECK_SH7751_PCIIO(port) || shifted_port(port)) + p = (volatile unsigned short *)PCI_IOMAP(port); + else + p = (volatile unsigned short *)port2adr(port); + while (count--) *((__u16 *) addr)++ = *p; +} + +void hs7751rvoip_insl(unsigned long port, void *addr, unsigned long count) +{ + if (CHECK_SH7751_PCIIO(port) || shifted_port(port)) { + volatile __u32 *p = (__u32 *)PCI_IOMAP(port); + + while (count--) *((__u32 *) addr)++ = *p; + } else + maybebadio(insl, port); +} + +void hs7751rvoip_outsb(unsigned long port, const void *addr, unsigned long count) +{ + if (PXSEG(port)) + while (count--) *(volatile unsigned char *)port = *((unsigned char *) addr)++; +#if defined(CONFIG_HS7751RVOIP_CODEC) + else if (codec_port(port)) + while (count--) *(volatile unsigned char *)((unsigned long)area6_io8_base+(port-CODEC_IO_BASE)) = *((unsigned char *) addr)++; +#endif + else if (CHECK_SH7751_PCIIO(port) || shifted_port(port)) { + volatile __u8 *bp = (__u8 *)PCI_IOMAP(port); + + while (count--) *bp = *((volatile unsigned char *) addr)++; + } else { + volatile __u16 *p = (volatile unsigned short *)port2adr(port); + + while (count--) *p = *((unsigned char *) addr)++; + } +} + +void hs7751rvoip_outsw(unsigned long port, const void *addr, unsigned long count) +{ + volatile __u16 *p; + + if (PXSEG(port)) + p = (volatile unsigned short *)port; + else if (CHECK_SH7751_PCIIO(port) || shifted_port(port)) + p = (volatile unsigned short *)PCI_IOMAP(port); + else + p = (volatile unsigned short *)port2adr(port); + while (count--) *p = *((__u16 *) addr)++; +} + +void hs7751rvoip_outsl(unsigned long port, const void *addr, unsigned long count) +{ + if (CHECK_SH7751_PCIIO(port) || shifted_port(port)) { + volatile __u32 *p = (__u32 *)PCI_IOMAP(port); + + while (count--) *p = *((__u32 *) addr)++; + } else + maybebadio(outsl, port); +} + +void *hs7751rvoip_ioremap(unsigned long offset, unsigned long size) +{ + if (offset >= 0xfd000000) + return (void *)offset; + else + return (void *)P2SEGADDR(offset); +} +EXPORT_SYMBOL(hs7751rvoip_ioremap); + +unsigned long hs7751rvoip_isa_port2addr(unsigned long offset) +{ + return port2adr(offset); +} |