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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* arch/arm/include/asm/floppy.h
*
* Copyright (C) 1996-2000 Russell King
*
* Note that we don't touch FLOPPY_DMA nor FLOPPY_IRQ here
*/
#ifndef __ASM_ARM_FLOPPY_H
#define __ASM_ARM_FLOPPY_H
#define fd_outb(val, base, reg) \
do { \
int new_val = (val); \
if ((reg) == FD_DOR) { \
if (new_val & 0xf0) \
new_val = (new_val & 0x0c) | \
floppy_selects[new_val & 3]; \
else \
new_val &= 0x0c; \
} \
outb(new_val, (base) + (reg)); \
} while(0)
#define fd_inb(base, reg) inb((base) + (reg))
#define fd_request_irq() request_irq(IRQ_FLOPPYDISK,floppy_interrupt,\
0,"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)
static inline int fd_dma_setup(void *data, unsigned int length,
unsigned int mode, unsigned long addr)
{
set_dma_mode(DMA_FLOPPY, mode);
__set_dma_addr(DMA_FLOPPY, data);
set_dma_count(DMA_FLOPPY, length);
virtual_dma_port = addr;
enable_dma(DMA_FLOPPY);
return 0;
}
#define fd_dma_setup fd_dma_setup
#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)
/* 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[4] = { 0x10, 0x21, 0x23, 0x33 };
#define FDC1 (0x3f0)
#define FLOPPY0_TYPE 4
#define FLOPPY1_TYPE 4
#define N_FDC 1
#define N_DRIVE 4
#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)
{
swap(floppy_selects[0], floppy_selects[1]);
}
#define EXTRA_FLOPPY_PARAMS ,{ "driveswap", &driveswap, NULL, 0, 0 }
#endif
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