diff options
Diffstat (limited to 'arch/sh/boards/snapgear/io.c')
| -rw-r--r-- | arch/sh/boards/snapgear/io.c | 145 |
1 files changed, 28 insertions, 117 deletions
diff --git a/arch/sh/boards/snapgear/io.c b/arch/sh/boards/snapgear/io.c index e2eb78fc381..0f482426455 100644 --- a/arch/sh/boards/snapgear/io.c +++ b/arch/sh/boards/snapgear/io.c @@ -1,6 +1,4 @@ -/* - * linux/arch/sh/kernel/io_7751se.c - * +/* * Copyright (C) 2002 David McCullough <davidm@snapgear.com> * Copyright (C) 2001 Ian da Silva, Jeremy Siegel * Based largely on io_se.c. @@ -11,67 +9,22 @@ * placeholder code from io_se.c left in with the * expectation of later SuperIO and PCMCIA access. */ - #include <linux/kernel.h> #include <linux/types.h> #include <linux/pci.h> #include <asm/io.h> #include <asm/addrspace.h> -#include <asm/pci.h> -#include "../../drivers/pci/pci-sh7751.h" - #ifdef CONFIG_SH_SECUREEDGE5410 unsigned short secureedge5410_ioport; #endif -/* - * The SnapGear uses the built-in PCI controller (PCIC) - * of the 7751 processor - */ - -#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 volatile __u16 *port2adr(unsigned int port) { -#if 0 - if (port >= 0x2000) - return (volatile __u16 *) (PA_MRSHPC + (port - 0x2000)); -#endif - maybebadio(name,(unsigned long)port); + maybebadio((unsigned long)port); return (volatile __u16*)port; } - -/* 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) @@ -79,148 +32,106 @@ static inline volatile __u16 *port2adr(unsigned int port) * should be way beyond the window, and is used w/o translation for * compatibility. */ - unsigned char snapgear_inb(unsigned long port) { if (PXSEG(port)) return *(volatile unsigned char *)port; - else if (CHECK_SH7751_PCIIO(port)) - return *(volatile unsigned char *)PCI_IOMAP(port); + else if (is_pci_ioaddr(port)) + return *(volatile unsigned char *)pci_ioaddr(port); else - return (*port2adr(port))&0xff; + return (*port2adr(port)) & 0xff; } - unsigned char snapgear_inb_p(unsigned long port) { unsigned char v; if (PXSEG(port)) v = *(volatile unsigned char *)port; - else if (CHECK_SH7751_PCIIO(port)) - v = *(volatile unsigned char *)PCI_IOMAP(port); + else if (is_pci_ioaddr(port)) + v = *(volatile unsigned char *)pci_ioaddr(port); else - v = (*port2adr(port))&0xff; - delay(); + v = (*port2adr(port))&0xff; + ctrl_delay(); return v; } - unsigned short snapgear_inw(unsigned long port) { if (PXSEG(port)) return *(volatile unsigned short *)port; - else if (CHECK_SH7751_PCIIO(port)) - return *(volatile unsigned short *)PCI_IOMAP(port); + else if (is_pci_ioaddr(port)) + return *(volatile unsigned short *)pci_ioaddr(port); else if (port >= 0x2000) return *port2adr(port); else - maybebadio(inw, port); + maybebadio(port); return 0; } - unsigned int snapgear_inl(unsigned long port) { if (PXSEG(port)) return *(volatile unsigned long *)port; - else if (CHECK_SH7751_PCIIO(port)) - return *(volatile unsigned int *)PCI_IOMAP(port); + else if (is_pci_ioaddr(port)) + return *(volatile unsigned int *)pci_ioaddr(port); else if (port >= 0x2000) return *port2adr(port); else - maybebadio(inl, port); + maybebadio(port); return 0; } - void snapgear_outb(unsigned char value, unsigned long port) { if (PXSEG(port)) *(volatile unsigned char *)port = value; - else if (CHECK_SH7751_PCIIO(port)) - *((unsigned char*)PCI_IOMAP(port)) = value; + else if (is_pci_ioaddr(port)) + *((unsigned char*)pci_ioaddr(port)) = value; else *(port2adr(port)) = value; } - void snapgear_outb_p(unsigned char value, unsigned long port) { if (PXSEG(port)) *(volatile unsigned char *)port = value; - else if (CHECK_SH7751_PCIIO(port)) - *((unsigned char*)PCI_IOMAP(port)) = value; + else if (is_pci_ioaddr(port)) + *((unsigned char*)pci_ioaddr(port)) = value; else *(port2adr(port)) = value; - delay(); + ctrl_delay(); } - void snapgear_outw(unsigned short value, unsigned long port) { if (PXSEG(port)) *(volatile unsigned short *)port = value; - else if (CHECK_SH7751_PCIIO(port)) - *((unsigned short *)PCI_IOMAP(port)) = value; + else if (is_pci_ioaddr(port)) + *((unsigned short *)pci_ioaddr(port)) = value; else if (port >= 0x2000) *port2adr(port) = value; else - maybebadio(outw, port); + maybebadio(port); } - void snapgear_outl(unsigned int value, unsigned long port) { if (PXSEG(port)) *(volatile unsigned long *)port = value; - else if (CHECK_SH7751_PCIIO(port)) - *((unsigned long*)PCI_IOMAP(port)) = value; + else if (is_pci_ioaddr(port)) + *((unsigned long*)pci_ioaddr(port)) = value; else - maybebadio(outl, port); + maybebadio(port); } void snapgear_insl(unsigned long port, void *addr, unsigned long count) { - maybebadio(insl, port); + maybebadio(port); } void snapgear_outsl(unsigned long port, const void *addr, unsigned long count) { - maybebadio(outsw, port); -} - -/* Map ISA bus address to the real address. Only for PCMCIA. */ - - -/* ISA page descriptor. */ -static __u32 sh_isa_memmap[256]; - - -#if 0 -static int sh_isa_mmap(__u32 start, __u32 length, __u32 offset) -{ - int idx; - - if (start >= 0x100000 || (start & 0xfff) || (length != 0x1000)) - return -1; - - idx = start >> 12; - sh_isa_memmap[idx] = 0xb8000000 + (offset &~ 0xfff); -#if 0 - printk("sh_isa_mmap: start %x len %x offset %x (idx %x paddr %x)\n", - start, length, offset, idx, sh_isa_memmap[idx]); -#endif - return 0; -} -#endif - -unsigned long snapgear_isa_port2addr(unsigned long offset) -{ - int idx; - - idx = (offset >> 12) & 0xff; - offset &= 0xfff; - return sh_isa_memmap[idx] + offset; + maybebadio(port); } |