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/* $Id: hw-access.c,v 1.5 1998/05/06 02:46:46 ralf Exp $
*
* Low-level hardware access stuff for SNI RM200 PCI
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 1996, 1997, 1998 by Ralf Baechle
*/
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/kbdcntrlr.h>
#include <linux/kernel.h>
#include <linux/linkage.h>
#include <linux/types.h>
#include <linux/mm.h>
#include <asm/bootinfo.h>
#include <asm/cachectl.h>
#include <asm/dma.h>
#include <asm/keyboard.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/mc146818rtc.h>
#include <asm/pgtable.h>
#include <asm/vector.h>
extern int FLOPPY_IRQ;
extern int FLOPPY_DMA;
/*
* How to access the FDC's registers.
*/
static unsigned char
fd_inb(unsigned int port)
{
return inb_p(port);
}
static void
fd_outb(unsigned char value, unsigned int port)
{
outb_p(value, port);
}
/*
* How to access the floppy DMA functions.
*/
static void
fd_enable_dma(int channel)
{
enable_dma(channel);
}
static void
fd_disable_dma(int channel)
{
disable_dma(channel);
}
static int
fd_request_dma(int channel)
{
return request_dma(channel, "floppy");
}
static void
fd_free_dma(int channel)
{
free_dma(channel);
}
static void
fd_clear_dma_ff(int channel)
{
clear_dma_ff(channel);
}
static void
fd_set_dma_mode(int channel, char mode)
{
set_dma_mode(channel, mode);
}
static void
fd_set_dma_addr(int channel, unsigned int addr)
{
set_dma_addr(channel, addr);
}
static void
fd_set_dma_count(int channel, unsigned int count)
{
set_dma_count(channel, count);
}
static int
fd_get_dma_residue(int channel)
{
return get_dma_residue(channel);
}
static void
fd_enable_irq(int irq)
{
enable_irq(irq);
}
static void
fd_disable_irq(int irq)
{
disable_irq(irq);
}
void
sni_fd_cacheflush(const void *addr, size_t size)
{
flush_cache_all();
}
/*
* RTC stuff (This is a guess on how the RM handles this ...)
*/
static unsigned char
rtc_read_data(unsigned long addr)
{
outb_p(addr, RTC_PORT(0));
return inb_p(RTC_PORT(1));
}
static void
rtc_write_data(unsigned char data, unsigned long addr)
{
outb_p(addr, RTC_PORT(0));
outb_p(data, RTC_PORT(1));
}
struct feature sni_rm200_pci_feature = {
/*
* How to access the floppy controller's ports
*/
fd_inb,
fd_outb,
/*
* How to access the floppy DMA functions.
*/
fd_enable_dma,
fd_disable_dma,
fd_request_dma,
fd_free_dma,
fd_clear_dma_ff,
fd_set_dma_mode,
fd_set_dma_addr,
fd_set_dma_count,
fd_get_dma_residue,
fd_enable_irq,
fd_disable_irq,
/*
* How to access the RTC functions.
*/
rtc_read_data,
rtc_write_data
};
#define KBD_STAT_IBF 0x02 /* Keyboard input buffer full */
static unsigned char sni_read_input(void)
{
return inb(KBD_DATA_REG);
}
static void sni_write_output(unsigned char val)
{
int status;
do {
status = inb(KBD_CNTL_REG);
} while (status & KBD_STAT_IBF);
outb(val, KBD_DATA_REG);
}
static void sni_write_command(unsigned char val)
{
int status;
do {
status = inb(KBD_CNTL_REG);
} while (status & KBD_STAT_IBF);
outb(val, KBD_CNTL_REG);
}
static unsigned char sni_read_status(void)
{
return inb(KBD_STATUS_REG);
}
__initfunc(void sni_rm200_keyboard_setup(void))
{
kbd_read_input = sni_read_input;
kbd_write_output = sni_write_output;
kbd_write_command = sni_write_command;
kbd_read_status = sni_read_status;
request_region(0x60, 16, "keyboard");
}
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