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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()         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_addr(addr)   set_dma_addr(FLOPPY_DMA,virt_to_bus(addr))

#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, \

                                            SA_INTERRUPT|SA_SAMPLE_RANDOM, \

                                            "floppy", NULL)

#define fd_free_irq()           free_irq(FLOPPY_IRQ, NULL);

#ifdef CONFIG_PCI

#include <linux/pci.h>

#define fd_dma_setup(addr,size,mode,io) alpha_fd_dma_setup(addr,size,mode,io)

static __inline__ int

alpha_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(NULL, bus_addr, prev_size, prev_dir);

                bus_addr = 0;

        }

        if (!bus_addr)  /* need to map it */

                bus_addr = pci_map_single(NULL, 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 */

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 certain ones, like XL and RUFFIAN.

 *

 * However, the test is simple and fast, and this *is* floppy, after all,

 * so we do it for all platforms, just to make sure.

 *

 * This is advantageous in other circumstances as well, as in moving

 * about the PCI DMA windows and forcing the floppy to start doing

 * scatter-gather when it never had before, and there *is* a problem

 * on that platform... ;-}

 */

#define CROSS_64KB(a,s)                                         \

({ unsigned long __s64 = (unsigned long)(a);                    \

   unsigned long __e64 = __s64 + (unsigned long)(s) - 1;        \

   (__s64 ^ __e64) & ~0xfffful; })

#define EXTRA_FLOPPY_PARAMS

#endif /* __ASM_ALPHA_FLOPPY_H */