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/*

 *  linux/include/asm-arm/floppy.h

 *

 *  Copyright (C) 1996-2000 Russell King

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 as

 * published by the Free Software Foundation.

 *

 *  Note that we don't touch FLOPPY_DMA nor FLOPPY_IRQ here

 */

#ifndef __ASM_ARM_FLOPPY_H

#define __ASM_ARM_FLOPPY_H

#if 0

#include <asm/arch/floppy.h>

#endif

#define fd_outb(val,port)                       \

        do {                                    \

                if ((port) == FD_DOR)           \

                        fd_setdor((val));       \

                else                            \

                        outb((val),(port));     \

        } while(0)

#define fd_inb(port)            inb((port))

#define fd_request_irq()        request_irq(IRQ_FLOPPYDISK,floppy_interrupt,\

                                        SA_INTERRUPT|SA_SAMPLE_RANDOM,"floppy",NULL)

#define fd_free_irq()           free_irq(IRQ_FLOPPYDISK,NULL)

#define fd_disable_irq()        disable_irq(IRQ_FLOPPYDISK)

#define fd_enable_irq()         enable_irq(IRQ_FLOPPYDISK)

#define fd_request_dma()        request_dma(DMA_FLOPPY,"floppy")

#define fd_free_dma()           free_dma(DMA_FLOPPY)

#define fd_disable_dma()        disable_dma(DMA_FLOPPY)

#define fd_enable_dma()         enable_dma(DMA_FLOPPY)

#define fd_clear_dma_ff()       clear_dma_ff(DMA_FLOPPY)

#define fd_set_dma_mode(mode)   set_dma_mode(DMA_FLOPPY, (mode))

#define fd_set_dma_addr(addr)   set_dma_addr(DMA_FLOPPY, virt_to_bus((addr)))

#define fd_set_dma_count(len)   set_dma_count(DMA_FLOPPY, (len))

#define fd_cacheflush(addr,sz)

/* need to clean up dma.h */

#define DMA_FLOPPYDISK          DMA_FLOPPY

/* Floppy_selects is the list of DOR's to select drive fd

 *

 * On initialisation, the floppy list is scanned, and the drives allocated

 * in the order that they are found.  This is done by seeking the drive

 * to a non-zero track, and then restoring it to track 0.  If an error occurs,

 * then there is no floppy drive present.       [to be put back in again]

 */

static unsigned char floppy_selects[2][4] =

{

        { 0x10, 0x21, 0x23, 0x33 },

        { 0x10, 0x21, 0x23, 0x33 }

};

#define fd_setdor(dor)                                                          \

do {                                                                            \

        int new_dor = (dor);                                                    \

        if (new_dor & 0xf0)                                                     \

                new_dor = (new_dor & 0x0c) | floppy_selects[fdc][new_dor & 3];  \

        else                                                                    \

                new_dor &= 0x0c;                                                \

        outb(new_dor, FD_DOR);                                                  \

} while (0)

/*

 * Someday, we'll automatically detect which drives are present...

 */

static inline void fd_scandrives (void)

{

#if 0

        int floppy, drive_count;

        fd_disable_irq();

        raw_cmd = &default_raw_cmd;

        raw_cmd->flags = FD_RAW_SPIN | FD_RAW_NEED_SEEK;

        raw_cmd->track = 0;

        raw_cmd->rate = ?;

        drive_count = 0;

        for (floppy = 0; floppy < 4; floppy ++) {

                current_drive = drive_count;

                /*

                 * Turn on floppy motor

                 */

                if (start_motor(redo_fd_request))

                        continue;

                /*

                 * Set up FDC

                 */

                fdc_specify();

                /*

                 * Tell FDC to recalibrate

                 */

                output_byte(FD_RECALIBRATE);

                LAST_OUT(UNIT(floppy));

                /* wait for command to complete */

                if (!successful) {

                        int i;

                        for (i = drive_count; i < 3; i--)

                                floppy_selects[fdc][i] = floppy_selects[fdc][i + 1];

                        floppy_selects[fdc][3] = 0;

                        floppy -= 1;

                } else

                        drive_count++;

        }

#else

        floppy_selects[0][0] = 0x10;

        floppy_selects[0][1] = 0x21;

        floppy_selects[0][2] = 0x23;

        floppy_selects[0][3] = 0x33;

#endif

}

#define FDC1 (0x3f0)

#define FLOPPY0_TYPE 4

#define FLOPPY1_TYPE 4

#define N_FDC 1

#define N_DRIVE 4

#define FLOPPY_MOTOR_MASK 0xf0

#define CROSS_64KB(a,s) (0)

/*

 * This allows people to reverse the order of

 * fd0 and fd1, in case their hardware is

 * strangely connected (as some RiscPCs

 * and A5000s seem to be).

 */

static void driveswap(int *ints, int dummy, int dummy2)

{

        floppy_selects[0][0] ^= floppy_selects[0][1];

        floppy_selects[0][1] ^= floppy_selects[0][0];

        floppy_selects[0][0] ^= floppy_selects[0][1];

}

#define EXTRA_FLOPPY_PARAMS ,{ "driveswap", &driveswap, NULL, 0, 0 }

#endif