forked from Minki/linux
d7cdc9e8ac
ioremap() overhaul. Add support for transparent PMB mapping, get rid of p3_ioremap(), etc. Also drop ioremap() and iounmap() routines from the machvec, as everyone can use the generic ioremap() API instead. For PCI memory apertures and other special cases, use the pci_iomap() API, as boards are already required to get the mapping right there. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
285 lines
6.8 KiB
C
285 lines
6.8 KiB
C
/*
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* arch/sh/boards/landisk/io.c
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*
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* Copyright (C) 2001 Ian da Silva, Jeremy Siegel
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* Based largely on io_se.c.
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*
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* I/O routine for I-O Data Device, Inc. LANDISK.
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*
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* Initial version only to support LAN access; some
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* placeholder code from io_landisk.c left in with the
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* expectation of later SuperIO and PCMCIA access.
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*/
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/*
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* modifed by kogiidena
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* 2005.03.03
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*/
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#include <linux/kernel.h>
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#include <linux/types.h>
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#include <asm/landisk/iodata_landisk.h>
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#include <asm/addrspace.h>
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#include <asm/io.h>
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#include <linux/module.h>
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#include <linux/pci.h>
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#include "../../drivers/pci/pci-sh7751.h"
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extern void *area5_io_base; /* Area 5 I/O Base address */
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extern void *area6_io_base; /* Area 6 I/O Base address */
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/*
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* The 7751R LANDISK uses the built-in PCI controller (PCIC)
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* of the 7751R processor, and has a SuperIO accessible via the PCI.
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* The board also includes a PCMCIA controller on its memory bus,
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* like the other Solution Engine boards.
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*/
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#define PCIIOBR (volatile long *)PCI_REG(SH7751_PCIIOBR)
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#define PCIMBR (volatile long *)PCI_REG(SH7751_PCIMBR)
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#define PCI_IO_AREA SH7751_PCI_IO_BASE
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#define PCI_MEM_AREA SH7751_PCI_CONFIG_BASE
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#define PCI_IOMAP(adr) (PCI_IO_AREA + (adr & ~SH7751_PCIIOBR_MASK))
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static inline void delay(void)
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{
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ctrl_inw(0xa0000000);
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}
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static inline unsigned long port2adr(unsigned int port)
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{
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if ((0x1f0 <= port && port < 0x1f8) || port == 0x3f6)
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if (port == 0x3f6)
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return ((unsigned long)area5_io_base + 0x2c);
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else
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return ((unsigned long)area5_io_base + PA_PIDE_OFFSET +
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((port - 0x1f0) << 1));
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else if ((0x170 <= port && port < 0x178) || port == 0x376)
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if (port == 0x376)
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return ((unsigned long)area6_io_base + 0x2c);
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else
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return ((unsigned long)area6_io_base + PA_SIDE_OFFSET +
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((port - 0x170) << 1));
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else
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maybebadio((unsigned long)port);
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return port;
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}
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/* In case someone configures the kernel w/o PCI support: in that */
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/* scenario, don't ever bother to check for PCI-window addresses */
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/* NOTE: WINDOW CHECK MAY BE A BIT OFF, HIGH PCIBIOS_MIN_IO WRAPS? */
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#if defined(CONFIG_PCI)
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#define CHECK_SH7751_PCIIO(port) \
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((port >= PCIBIOS_MIN_IO) && (port < (PCIBIOS_MIN_IO + SH7751_PCI_IO_SIZE)))
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#else
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#define CHECK_SH_7751_PCIIO(port) (0)
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#endif
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/*
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* General outline: remap really low stuff [eventually] to SuperIO,
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* stuff in PCI IO space (at or above window at pci.h:PCIBIOS_MIN_IO)
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* is mapped through the PCI IO window. Stuff with high bits (PXSEG)
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* should be way beyond the window, and is used w/o translation for
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* compatibility.
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*/
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u8 landisk_inb(unsigned long port)
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{
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if (PXSEG(port))
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return ctrl_inb(port);
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else if (CHECK_SH7751_PCIIO(port))
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return ctrl_inb(PCI_IOMAP(port));
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return ctrl_inw(port2adr(port)) & 0xff;
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}
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u8 landisk_inb_p(unsigned long port)
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{
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u8 v;
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if (PXSEG(port))
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v = ctrl_inb(port);
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else if (CHECK_SH7751_PCIIO(port))
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v = ctrl_inb(PCI_IOMAP(port));
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else
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v = ctrl_inw(port2adr(port)) & 0xff;
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delay();
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return v;
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}
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u16 landisk_inw(unsigned long port)
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{
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if (PXSEG(port))
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return ctrl_inw(port);
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else if (CHECK_SH7751_PCIIO(port))
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return ctrl_inw(PCI_IOMAP(port));
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else
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maybebadio(port);
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return 0;
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}
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u32 landisk_inl(unsigned long port)
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{
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if (PXSEG(port))
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return ctrl_inl(port);
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else if (CHECK_SH7751_PCIIO(port))
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return ctrl_inl(PCI_IOMAP(port));
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else
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maybebadio(port);
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return 0;
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}
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void landisk_outb(u8 value, unsigned long port)
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{
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if (PXSEG(port))
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ctrl_outb(value, port);
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else if (CHECK_SH7751_PCIIO(port))
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ctrl_outb(value, PCI_IOMAP(port));
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else
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ctrl_outw(value, port2adr(port));
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}
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void landisk_outb_p(u8 value, unsigned long port)
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{
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if (PXSEG(port))
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ctrl_outb(value, port);
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else if (CHECK_SH7751_PCIIO(port))
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ctrl_outb(value, PCI_IOMAP(port));
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else
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ctrl_outw(value, port2adr(port));
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delay();
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}
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void landisk_outw(u16 value, unsigned long port)
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{
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if (PXSEG(port))
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ctrl_outw(value, port);
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else if (CHECK_SH7751_PCIIO(port))
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ctrl_outw(value, PCI_IOMAP(port));
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else
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maybebadio(port);
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}
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void landisk_outl(u32 value, unsigned long port)
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{
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if (PXSEG(port))
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ctrl_outl(value, port);
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else if (CHECK_SH7751_PCIIO(port))
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ctrl_outl(value, PCI_IOMAP(port));
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else
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maybebadio(port);
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}
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void landisk_insb(unsigned long port, void *dst, unsigned long count)
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{
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volatile u16 *p;
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u8 *buf = dst;
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if (PXSEG(port)) {
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while (count--)
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*buf++ = *(volatile u8 *)port;
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} else if (CHECK_SH7751_PCIIO(port)) {
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volatile u8 *bp = (volatile u8 *)PCI_IOMAP(port);
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while (count--)
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*buf++ = *bp;
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} else {
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p = (volatile u16 *)port2adr(port);
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while (count--)
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*buf++ = *p & 0xff;
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}
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}
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void landisk_insw(unsigned long port, void *dst, unsigned long count)
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{
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volatile u16 *p;
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u16 *buf = dst;
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if (PXSEG(port))
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p = (volatile u16 *)port;
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else if (CHECK_SH7751_PCIIO(port))
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p = (volatile u16 *)PCI_IOMAP(port);
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else
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p = (volatile u16 *)port2adr(port);
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while (count--)
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*buf++ = *p;
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}
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void landisk_insl(unsigned long port, void *dst, unsigned long count)
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{
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u32 *buf = dst;
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if (CHECK_SH7751_PCIIO(port)) {
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volatile u32 *p = (volatile u32 *)PCI_IOMAP(port);
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while (count--)
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*buf++ = *p;
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} else
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maybebadio(port);
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}
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void landisk_outsb(unsigned long port, const void *src, unsigned long count)
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{
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volatile u16 *p;
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const u8 *buf = src;
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if (PXSEG(port))
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while (count--)
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ctrl_outb(*buf++, port);
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else if (CHECK_SH7751_PCIIO(port)) {
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volatile u8 *bp = (volatile u8 *)PCI_IOMAP(port);
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while (count--)
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*bp = *buf++;
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} else {
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p = (volatile u16 *)port2adr(port);
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while (count--)
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*p = *buf++;
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}
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}
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void landisk_outsw(unsigned long port, const void *src, unsigned long count)
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{
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volatile u16 *p;
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const u16 *buf = src;
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if (PXSEG(port))
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p = (volatile u16 *)port;
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else if (CHECK_SH7751_PCIIO(port))
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p = (volatile u16 *)PCI_IOMAP(port);
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else
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p = (volatile u16 *)port2adr(port);
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while (count--)
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*p = *buf++;
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}
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void landisk_outsl(unsigned long port, const void *src, unsigned long count)
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{
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const u32 *buf = src;
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if (CHECK_SH7751_PCIIO(port)) {
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volatile u32 *p = (volatile u32 *)PCI_IOMAP(port);
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while (count--)
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*p = *buf++;
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} else
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maybebadio(port);
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}
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void __iomem *landisk_ioport_map(unsigned long port, unsigned int size)
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{
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if (PXSEG(port))
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return (void __iomem *)port;
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else if (CHECK_SH7751_PCIIO(port))
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return (void __iomem *)PCI_IOMAP(port);
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return (void __iomem *)port2adr(port);
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}
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