107 lines
2.8 KiB
C
107 lines
2.8 KiB
C
/*
|
|
* Architecture specific parts of the Floppy driver
|
|
*
|
|
* 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
|
|
*/
|
|
#ifndef __ASM_POWERPC_FLOPPY_H
|
|
#define __ASM_POWERPC_FLOPPY_H
|
|
#ifdef __KERNEL__
|
|
|
|
#include <asm/machdep.h>
|
|
|
|
#define fd_inb(port) inb_p(port)
|
|
#define fd_outb(value,port) outb_p(value,port)
|
|
|
|
#define fd_enable_dma() enable_dma(FLOPPY_DMA)
|
|
#define fd_disable_dma() disable_dma(FLOPPY_DMA)
|
|
#define fd_request_dma() request_dma(FLOPPY_DMA, "floppy")
|
|
#define fd_free_dma() free_dma(FLOPPY_DMA)
|
|
#define fd_clear_dma_ff() clear_dma_ff(FLOPPY_DMA)
|
|
#define fd_set_dma_mode(mode) set_dma_mode(FLOPPY_DMA, mode)
|
|
#define fd_set_dma_count(count) set_dma_count(FLOPPY_DMA, count)
|
|
#define fd_enable_irq() enable_irq(FLOPPY_IRQ)
|
|
#define fd_disable_irq() disable_irq(FLOPPY_IRQ)
|
|
#define fd_cacheflush(addr,size) /* nothing */
|
|
#define fd_request_irq() request_irq(FLOPPY_IRQ, floppy_interrupt, \
|
|
IRQF_DISABLED, "floppy", NULL)
|
|
#define fd_free_irq() free_irq(FLOPPY_IRQ, NULL);
|
|
|
|
#ifdef CONFIG_PCI
|
|
|
|
#include <linux/pci.h>
|
|
#include <asm/ppc-pci.h> /* for ppc64_isabridge_dev */
|
|
|
|
#define fd_dma_setup(addr,size,mode,io) powerpc_fd_dma_setup(addr,size,mode,io)
|
|
|
|
static __inline__ int powerpc_fd_dma_setup(char *addr, unsigned long size,
|
|
int mode, int io)
|
|
{
|
|
static unsigned long prev_size;
|
|
static dma_addr_t bus_addr = 0;
|
|
static char *prev_addr;
|
|
static int prev_dir;
|
|
int dir;
|
|
|
|
dir = (mode == DMA_MODE_READ) ? PCI_DMA_FROMDEVICE : PCI_DMA_TODEVICE;
|
|
|
|
if (bus_addr
|
|
&& (addr != prev_addr || size != prev_size || dir != prev_dir)) {
|
|
/* different from last time -- unmap prev */
|
|
pci_unmap_single(ppc64_isabridge_dev, bus_addr, prev_size, prev_dir);
|
|
bus_addr = 0;
|
|
}
|
|
|
|
if (!bus_addr) /* need to map it */
|
|
bus_addr = pci_map_single(ppc64_isabridge_dev, addr, size, dir);
|
|
|
|
/* remember this one as prev */
|
|
prev_addr = addr;
|
|
prev_size = size;
|
|
prev_dir = dir;
|
|
|
|
fd_clear_dma_ff();
|
|
fd_cacheflush(addr, size);
|
|
fd_set_dma_mode(mode);
|
|
set_dma_addr(FLOPPY_DMA, bus_addr);
|
|
fd_set_dma_count(size);
|
|
virtual_dma_port = io;
|
|
fd_enable_dma();
|
|
|
|
return 0;
|
|
}
|
|
|
|
#endif /* CONFIG_PCI */
|
|
|
|
__inline__ void virtual_dma_init(void)
|
|
{
|
|
/* Nothing to do on PowerPC */
|
|
}
|
|
|
|
static int FDC1 = 0x3f0;
|
|
static int FDC2 = -1;
|
|
|
|
/*
|
|
* Again, the CMOS information not available
|
|
*/
|
|
#define FLOPPY0_TYPE 6
|
|
#define FLOPPY1_TYPE 0
|
|
|
|
#define N_FDC 2 /* Don't change this! */
|
|
#define N_DRIVE 8
|
|
|
|
#define FLOPPY_MOTOR_MASK 0xf0
|
|
|
|
/*
|
|
* The PowerPC has no problems with floppy DMA crossing 64k borders.
|
|
*/
|
|
#define CROSS_64KB(a,s) (0)
|
|
|
|
#define EXTRA_FLOPPY_PARAMS
|
|
|
|
#endif /* __KERNEL__ */
|
|
#endif /* __ASM_POWERPC_FLOPPY_H */
|