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/*
* Low-level hardware access stuff for Jazz family machines.
*
* 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) 1995, 1996, 1997 by Ralf Baechle
*
* $Id: hw-access.c,v 1.4 1997/12/01 17:57:23 ralf Exp $
*/
#include <linux/delay.h>
#include <linux/linkage.h>
#include <linux/types.h>
#include <linux/mm.h>
#include <asm/addrspace.h>
#include <asm/vector.h>
#include <asm/jazz.h>
#include <asm/jazzdma.h>
#include <asm/keyboard.h>
#include <asm/pgtable.h>
#include <asm/mc146818rtc.h>
static unsigned char
fd_inb(unsigned int port)
{
unsigned char c;
c = *(volatile unsigned char *) port;
udelay(1);
return c;
}
static void
fd_outb(unsigned char value, unsigned int port)
{
*(volatile unsigned char *) port = value;
}
/*
* How to access the floppy DMA functions.
*/
static void
fd_enable_dma(int channel)
{
vdma_enable(JAZZ_FLOPPY_DMA);
}
static void
fd_disable_dma(int channel)
{
vdma_disable(JAZZ_FLOPPY_DMA);
}
static int
fd_request_dma(int channel)
{
return 0;
}
static void
fd_free_dma(int channel)
{
}
static void
fd_clear_dma_ff(int channel)
{
}
static void
fd_set_dma_mode(int channel, char mode)
{
vdma_set_mode(JAZZ_FLOPPY_DMA, mode);
}
static void
fd_set_dma_addr(int channel, unsigned int a)
{
vdma_set_addr(JAZZ_FLOPPY_DMA, vdma_phys2log(PHYSADDR(a)));
}
static void
fd_set_dma_count(int channel, unsigned int count)
{
vdma_set_count(JAZZ_FLOPPY_DMA, count);
}
static int
fd_get_dma_residue(int channel)
{
return vdma_get_residue(JAZZ_FLOPPY_DMA);
}
static void
fd_enable_irq(int irq)
{
}
static void
fd_disable_irq(int irq)
{
}
void
jazz_fd_cacheflush(const void *addr, size_t size)
{
flush_cache_all();
}
static unsigned char
rtc_read_data(unsigned long addr)
{
outb_p(addr, RTC_PORT(0));
return *(char *)JAZZ_RTC_BASE;
}
static void
rtc_write_data(unsigned char data, unsigned long addr)
{
outb_p(addr, RTC_PORT(0));
*(char *)JAZZ_RTC_BASE = data;
}
struct feature jazz_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
};
static volatile keyboard_hardware *jazz_kh =
(keyboard_hardware *) JAZZ_KEYBOARD_ADDRESS;
static unsigned char jazz_read_input(void)
{
return jazz_kh->data;
}
static void jazz_write_output(unsigned char val)
{
jazz_kh->data = val;
}
static void jazz_write_command(unsigned char val)
{
jazz_kh->command = val;
}
static unsigned char jazz_read_status(void)
{
return jazz_kh->command;
}
void jazz_keyboard_setup(void)
{
kbd_read_input = jazz_read_input;
kbd_write_output = jazz_write_output;
kbd_write_command = jazz_write_command;
kbd_read_status = jazz_read_status;
request_region(0x60, 16, "keyboard");
r4030_write_reg16(JAZZ_IO_IRQ_ENABLE, r4030_read_reg16(JAZZ_IO_IRQ_ENABLE) | JAZZ_IE_KEYBOARD);
}
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