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/*
* 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_ALPHA_FLOPPY_H
#define __ASM_ALPHA_FLOPPY_H
#include <linux/config.h>
#define fd_inb(port) inb_p(port)
#define fd_outb(port,value) outb_p(port,value)
#define fd_enable_dma(channel) enable_dma(channel)
#define fd_disable_dma(channel) disable_dma(channel)
#define fd_request_dma(channel) request_dma(channel, "floppy")
#define fd_free_dma(channel) free_dma(channel)
#define fd_clear_dma_ff(channel) clear_dma_ff(channel)
#define fd_set_dma_mode(channel, mode) set_dma_mode(channel, mode)
#define fd_set_dma_addr(channel, addr) set_dma_addr(channel,virt_to_bus(addr))
#define fd_set_dma_count(channel, count) set_dma_count(channel,count)
#define fd_enable_irq(irq) enable_irq(irq)
#define fd_disable_irq(irq) disable_irq(irq)
#define fd_request_irq(irq) request_irq(irq, \
floppy_interrupt, \
SA_INTERRUPT \
| SA_SAMPLE_RANDOM, \
"floppy", NULL)
#define fd_free_irq(irq) free_irq(irq, NULL);
__inline__ void virtual_dma_init(void)
{
/* Nothing to do on an Alpha */
}
static int FDC1 = 0x3f0;
static int FDC2 = -1;
/*
* Again, the CMOS information doesn't work on the alpha..
*/
#define FLOPPY0_TYPE 6
#define FLOPPY1_TYPE 0
#define N_FDC 2
#define N_DRIVE 8
#define FLOPPY_MOTOR_MASK 0xf0
/*
* Most Alphas have no problems with floppy DMA crossing 64k borders,
* except for XL and RUFFIAN. They are also the only one with DMA
* limits, so we use that to test in the generic kernel.
*/
#define __CROSS_64KB(a,s) \
({ unsigned long __s64 = (unsigned long)(a); \
unsigned long __e64 = __s64 + (unsigned long)(s) - 1; \
(__s64 ^ __e64) & ~0xfffful; })
#ifdef CONFIG_ALPHA_GENERIC
# define CROSS_64KB(a,s) (__CROSS_64KB(a,s) && ~alpha_mv.max_dma_address)
#else
# if defined(CONFIG_ALPHA_XL) || defined(CONFIG_ALPHA_RUFFIAN)
# define CROSS_64KB(a,s) __CROSS_64KB(a,s)
# else
# define CROSS_64KB(a,s) (0)
# endif
#endif
#endif /* __ASM_ALPHA_FLOPPY_H */
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