diff options
Diffstat (limited to 'arch/sh/boards/renesas/rts7751r2d/io.c')
| -rw-r--r-- | arch/sh/boards/renesas/rts7751r2d/io.c | 319 |
1 files changed, 319 insertions, 0 deletions
diff --git a/arch/sh/boards/renesas/rts7751r2d/io.c b/arch/sh/boards/renesas/rts7751r2d/io.c new file mode 100644 index 00000000000..c46f9154cfd --- /dev/null +++ b/arch/sh/boards/renesas/rts7751r2d/io.c @@ -0,0 +1,319 @@ +/* + * linux/arch/sh/kernel/io_rts7751r2d.c + * + * Copyright (C) 2001 Ian da Silva, Jeremy Siegel + * Based largely on io_se.c. + * + * I/O routine for Renesas Technology sales RTS7751R2D. + * + * Initial version only to support LAN access; some + * placeholder code from io_rts7751r2d.c left in with the + * expectation of later SuperIO and PCMCIA access. + */ + +#include <linux/kernel.h> +#include <linux/types.h> +#include <asm/io.h> +#include <asm/rts7751r2d/rts7751r2d.h> +#include <asm/addrspace.h> + +#include <linux/module.h> +#include <linux/pci.h> +#include "../../../drivers/pci/pci-sh7751.h" + +/* + * The 7751R RTS7751R2D 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)) + +#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 (PA_AREA5_IO + 0x80c); + else + return (PA_AREA5_IO + 0x1000 + ((port-0x1f0) << 1)); + else + maybebadio(port2adr, (unsigned long)port); + + return port; +} + +static inline unsigned long port88796l(unsigned int port, int flag) +{ + unsigned long addr; + + if (flag) + addr = PA_AX88796L + ((port - AX88796L_IO_BASE) << 1); + else + addr = PA_AX88796L + ((port - AX88796L_IO_BASE) << 1) + 0x1000; + + return addr; +} + +/* The 7751R RTS7751R2D 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; +} + +/* 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 + +#if defined(CONFIG_NE2000) || defined(CONFIG_NE2000_MODULE) +#define CHECK_AX88796L_PORT(port) \ + ((port >= AX88796L_IO_BASE) && (port < (AX88796L_IO_BASE+0x20))) +#else +#define CHECK_AX88796L_PORT(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 rts7751r2d_inb(unsigned long port) +{ + if (CHECK_AX88796L_PORT(port)) + return (*(volatile unsigned short *)port88796l(port, 0)) & 0xff; + else if (PXSEG(port)) + return *(volatile unsigned char *)port; + 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 rts7751r2d_inb_p(unsigned long port) +{ + unsigned char v; + + if (CHECK_AX88796L_PORT(port)) + v = (*(volatile unsigned short *)port88796l(port, 0)) & 0xff; + else if (PXSEG(port)) + v = *(volatile unsigned char *)port; + 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 rts7751r2d_inw(unsigned long port) +{ + if (CHECK_AX88796L_PORT(port)) + maybebadio(inw, port); + else 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 rts7751r2d_inl(unsigned long port) +{ + if (CHECK_AX88796L_PORT(port)) + maybebadio(inl, port); + else 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 rts7751r2d_outb(unsigned char value, unsigned long port) +{ + if (CHECK_AX88796L_PORT(port)) + *((volatile unsigned short *)port88796l(port, 0)) = value; + else if (PXSEG(port)) + *(volatile unsigned char *)port = value; + else if (CHECK_SH7751_PCIIO(port) || shifted_port(port)) + *(volatile unsigned char *)PCI_IOMAP(port) = value; + else + *(volatile unsigned short *)port2adr(port) = value; +} + +void rts7751r2d_outb_p(unsigned char value, unsigned long port) +{ + if (CHECK_AX88796L_PORT(port)) + *((volatile unsigned short *)port88796l(port, 0)) = value; + else if (PXSEG(port)) + *(volatile unsigned char *)port = value; + else if (CHECK_SH7751_PCIIO(port) || shifted_port(port)) + *(volatile unsigned char *)PCI_IOMAP(port) = value; + else + *(volatile unsigned short *)port2adr(port) = value; + delay(); +} + +void rts7751r2d_outw(unsigned short value, unsigned long port) +{ + if (CHECK_AX88796L_PORT(port)) + maybebadio(outw, port); + else if (PXSEG(port)) + *(volatile unsigned short *)port = value; + else if (CHECK_SH7751_PCIIO(port) || shifted_port(port)) + *(volatile unsigned short *)PCI_IOMAP(port) = value; + else + maybebadio(outw, port); +} + +void rts7751r2d_outl(unsigned int value, unsigned long port) +{ + if (CHECK_AX88796L_PORT(port)) + maybebadio(outl, port); + else if (PXSEG(port)) + *(volatile unsigned long *)port = value; + else if (CHECK_SH7751_PCIIO(port) || shifted_port(port)) + *(volatile unsigned long *)PCI_IOMAP(port) = value; + else + maybebadio(outl, port); +} + +void rts7751r2d_insb(unsigned long port, void *addr, unsigned long count) +{ + volatile __u8 *bp; + volatile __u16 *p; + + if (CHECK_AX88796L_PORT(port)) { + p = (volatile unsigned short *)port88796l(port, 0); + while (count--) *((unsigned char *) addr)++ = *p & 0xff; + } else if (PXSEG(port)) + while (count--) *((unsigned char *) addr)++ = *(volatile unsigned char *)port; + else if (CHECK_SH7751_PCIIO(port) || shifted_port(port)) { + bp = (__u8 *)PCI_IOMAP(port); + while (count--) *((volatile unsigned char *) addr)++ = *bp; + } else { + p = (volatile unsigned short *)port2adr(port); + while (count--) *((unsigned char *) addr)++ = *p & 0xff; + } +} + +void rts7751r2d_insw(unsigned long port, void *addr, unsigned long count) +{ + volatile __u16 *p; + + if (CHECK_AX88796L_PORT(port)) + p = (volatile unsigned short *)port88796l(port, 1); + else 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 rts7751r2d_insl(unsigned long port, void *addr, unsigned long count) +{ + if (CHECK_AX88796L_PORT(port)) + maybebadio(insl, port); + else 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 rts7751r2d_outsb(unsigned long port, const void *addr, unsigned long count) +{ + volatile __u8 *bp; + volatile __u16 *p; + + if (CHECK_AX88796L_PORT(port)) { + p = (volatile unsigned short *)port88796l(port, 0); + while (count--) *p = *((unsigned char *) addr)++; + } else if (PXSEG(port)) + while (count--) *(volatile unsigned char *)port = *((unsigned char *) addr)++; + else if (CHECK_SH7751_PCIIO(port) || shifted_port(port)) { + bp = (__u8 *)PCI_IOMAP(port); + while (count--) *bp = *((volatile unsigned char *) addr)++; + } else { + p = (volatile unsigned short *)port2adr(port); + while (count--) *p = *((unsigned char *) addr)++; + } +} + +void rts7751r2d_outsw(unsigned long port, const void *addr, unsigned long count) +{ + volatile __u16 *p; + + if (CHECK_AX88796L_PORT(port)) + p = (volatile unsigned short *)port88796l(port, 1); + else 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 rts7751r2d_outsl(unsigned long port, const void *addr, unsigned long count) +{ + if (CHECK_AX88796L_PORT(port)) + maybebadio(outsl, port); + else 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 *rts7751r2d_ioremap(unsigned long offset, unsigned long size) +{ + if (offset >= 0xfd000000) + return (void *)offset; + else + return (void *)P2SEGADDR(offset); +} +EXPORT_SYMBOL(rts7751r2d_ioremap); + +unsigned long rts7751r2d_isa_port2addr(unsigned long offset) +{ + return port2adr(offset); +} |