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/*
* Low-level hardware access stuff for Deskstation rPC44/Tyne
*
* 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 by Ralf Baechle
*
* $Id: hw-access.c,v 1.2 1997/07/23 17:40:54 ralf Exp $
*/
#include <linux/config.h>
#include <linux/delay.h>
#include <linux/kbdcntrlr.h>
#include <linux/kernel.h>
#include <linux/linkage.h>
#include <linux/types.h>
#include <asm/bootinfo.h>
#include <asm/cachectl.h>
#include <asm/dma.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/vector.h>
extern int FLOPPY_IRQ;
extern int FLOPPY_DMA;
asmlinkage extern void deskstation_handle_int(void);
/*
* 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(void)
{
enable_dma(FLOPPY_DMA);
}
static void
fd_disable_dma(void)
{
disable_dma(FLOPPY_DMA);
}
static int
fd_request_dma(void)
{
return request_dma(FLOPPY_DMA, "floppy");
}
static void
fd_free_dma(void)
{
free_dma(FLOPPY_DMA);
}
static void
fd_clear_dma_ff(void)
{
clear_dma_ff(FLOPPY_DMA);
}
static void
fd_set_dma_mode(char mode)
{
set_dma_mode(FLOPPY_DMA, mode);
}
static void
fd_set_dma_addr(unsigned int addr)
{
set_dma_addr(FLOPPY_DMA, addr);
}
static void
fd_set_dma_count(unsigned int count)
{
set_dma_count(FLOPPY_DMA, count);
}
static int
fd_get_dma_residue(void)
{
return get_dma_residue(FLOPPY_DMA);
}
static void
fd_enable_irq(void)
{
enable_irq(FLOPPY_IRQ);
}
static void
fd_disable_irq(void)
{
disable_irq(FLOPPY_IRQ);
}
void
deskstation_fd_cacheflush(const void *addr, size_t size)
{
flush_cache_all();
}
/*
* RTC stuff
*/
static unsigned char *
rtc_read_data()
{
return 0;
}
static void
rtc_write_data(unsigned char data)
{
}
/*
* KLUDGE
*/
static unsigned long
vdma_alloc(unsigned long paddr, unsigned long size)
{
return 0;
}
#ifdef CONFIG_DESKSTATION_TYNE
struct feature deskstation_tyne_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
};
#endif
#ifdef CONFIG_DESKSTATION_RPC44
struct feature deskstation_rpc44_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
};
#endif
static unsigned char dtc_read_input(void)
{
return inb(KBD_DATA_REG);
}
static void dtc_write_output(unsigned char val)
{
outb(val, KBD_DATA_REG);
}
static void dtc_write_command(unsigned char val)
{
outb(val, KBD_CNTL_REG);
}
static unsigned char dtc_read_status(void)
{
return inb(KBD_STATUS_REG);
}
static void dtc_rm200_keyboard_setup(void)
{
kbd_read_input = dtc_read_input;
kbd_write_output = dtc_write_output;
kbd_write_command = dtc_write_command;
kbd_read_status = dtc_read_status;
request_region(0x60, 16, "keyboard");
}
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