floppy.h
2.51 KB
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/*
* 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) 1998, 2003 by Ralf Baechle
*/
#ifndef __ASM_MACH_JAZZ_FLOPPY_H
#define __ASM_MACH_JAZZ_FLOPPY_H
#include <linux/delay.h>
#include <linux/linkage.h>
#include <linux/types.h>
#include <linux/mm.h>
#include <asm/addrspace.h>
#include <asm/jazz.h>
#include <asm/jazzdma.h>
#include <asm/pgtable.h>
static inline unsigned char fd_inb(unsigned int port)
{
unsigned char c;
c = *(volatile unsigned char *) port;
udelay(1);
return c;
}
static inline void fd_outb(unsigned char value, unsigned int port)
{
*(volatile unsigned char *) port = value;
}
/*
* How to access the floppy DMA functions.
*/
static inline void fd_enable_dma(void)
{
vdma_enable(JAZZ_FLOPPY_DMA);
}
static inline void fd_disable_dma(void)
{
vdma_disable(JAZZ_FLOPPY_DMA);
}
static inline int fd_request_dma(void)
{
return 0;
}
static inline void fd_free_dma(void)
{
}
static inline void fd_clear_dma_ff(void)
{
}
static inline void fd_set_dma_mode(char mode)
{
vdma_set_mode(JAZZ_FLOPPY_DMA, mode);
}
static inline void fd_set_dma_addr(char *a)
{
vdma_set_addr(JAZZ_FLOPPY_DMA, vdma_phys2log(CPHYSADDR((unsigned long)a)));
}
static inline void fd_set_dma_count(unsigned int count)
{
vdma_set_count(JAZZ_FLOPPY_DMA, count);
}
static inline int fd_get_dma_residue(void)
{
return vdma_get_residue(JAZZ_FLOPPY_DMA);
}
static inline void fd_enable_irq(void)
{
}
static inline void fd_disable_irq(void)
{
}
static inline int fd_request_irq(void)
{
return request_irq(FLOPPY_IRQ, floppy_interrupt,
0, "floppy", NULL);
}
static inline void fd_free_irq(void)
{
free_irq(FLOPPY_IRQ, NULL);
}
static inline unsigned long fd_getfdaddr1(void)
{
return JAZZ_FDC_BASE;
}
static inline unsigned long fd_dma_mem_alloc(unsigned long size)
{
unsigned long mem;
mem = __get_dma_pages(GFP_KERNEL, get_order(size));
if(!mem)
return 0;
vdma_alloc(CPHYSADDR(mem), size); /* XXX error checking */
return mem;
}
static inline void fd_dma_mem_free(unsigned long addr, unsigned long size)
{
vdma_free(vdma_phys2log(CPHYSADDR(addr)));
free_pages(addr, get_order(size));
}
static inline unsigned long fd_drive_type(unsigned long n)
{
/* XXX This is wrong for machines with ED 2.88mb disk drives like the
Olivetti M700. Anyway, we should suck this from the ARC
firmware. */
if (n == 0)
return 4; /* 3,5", 1.44mb */
return 0;
}
#endif /* __ASM_MACH_JAZZ_FLOPPY_H */