[linux-block.git] / arch / arm / include / asm / floppy.h

/* 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,port)						\
	do {								\
		int new_val = (val);					\
		if (((port) & 7) == FD_DOR) {				\
			if (new_val & 0xf0)				\
				new_val = (new_val & 0x0c) |		\
					  floppy_selects[new_val & 3];	\
			else						\
				new_val &= 0x0c;			\
		}							\
		outb(new_val, (port));					\
	} while(0)

#define fd_inb(port)		inb((port))
#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
Commit	Line	Data
d2912cb1	1	/* SPDX-License-Identifier: GPL-2.0-only */
1da177e4	2	/*
4baa9922	3	* arch/arm/include/asm/floppy.h
1da177e4 LT	4	*
	5	* Copyright (C) 1996-2000 Russell King
	6	*
1da177e4 LT	7	* Note that we don't touch FLOPPY_DMA nor FLOPPY_IRQ here
	8	*/
	9	#ifndef __ASM_ARM_FLOPPY_H
	10	#define __ASM_ARM_FLOPPY_H
1da177e4	11
fc0c5c0c WT	12	#define fd_outb(val,port) \
	13	do { \
	14	int new_val = (val); \
e2032464	15	if (((port) & 7) == FD_DOR) { \
fc0c5c0c WT	16	if (new_val & 0xf0) \
	17	new_val = (new_val & 0x0c) \| \
	18	floppy_selects[new_val & 3]; \
	19	else \
	20	new_val &= 0x0c; \
	21	} \
	22	outb(new_val, (port)); \
1da177e4 LT	23	} while(0)
	24
	25	#define fd_inb(port) inb((port))
	26	#define fd_request_irq() request_irq(IRQ_FLOPPYDISK,floppy_interrupt,\
57c06a8e	27	0,"floppy",NULL)
1da177e4 LT	28	#define fd_free_irq() free_irq(IRQ_FLOPPYDISK,NULL)
	29	#define fd_disable_irq() disable_irq(IRQ_FLOPPYDISK)
	30	#define fd_enable_irq() enable_irq(IRQ_FLOPPYDISK)
	31
21d1ca04 RK	32	static inline int fd_dma_setup(void *data, unsigned int length,
	33	unsigned int mode, unsigned long addr)
	34	{
	35	set_dma_mode(DMA_FLOPPY, mode);
	36	__set_dma_addr(DMA_FLOPPY, data);
	37	set_dma_count(DMA_FLOPPY, length);
	38	virtual_dma_port = addr;
	39	enable_dma(DMA_FLOPPY);
	40	return 0;
	41	}
	42	#define fd_dma_setup fd_dma_setup
	43
1da177e4 LT	44	#define fd_request_dma() request_dma(DMA_FLOPPY,"floppy")
	45	#define fd_free_dma() free_dma(DMA_FLOPPY)
	46	#define fd_disable_dma() disable_dma(DMA_FLOPPY)
1da177e4 LT	47
	48	/* need to clean up dma.h */
	49	#define DMA_FLOPPYDISK DMA_FLOPPY
	50
	51	/* Floppy_selects is the list of DOR's to select drive fd
	52	*
	53	* On initialisation, the floppy list is scanned, and the drives allocated
	54	* in the order that they are found. This is done by seeking the drive
	55	* to a non-zero track, and then restoring it to track 0. If an error occurs,
	56	* then there is no floppy drive present. [to be put back in again]
	57	*/
336eae37	58	static unsigned char floppy_selects[4] = { 0x10, 0x21, 0x23, 0x33 };
1da177e4	59
1da177e4 LT	60	#define FDC1 (0x3f0)
	61
	62	#define FLOPPY0_TYPE 4
	63	#define FLOPPY1_TYPE 4
	64
	65	#define N_FDC 1
	66	#define N_DRIVE 4
	67
1da177e4 LT	68	#define CROSS_64KB(a,s) (0)
	69
	70	/*
	71	* This allows people to reverse the order of
	72	* fd0 and fd1, in case their hardware is
	73	* strangely connected (as some RiscPCs
	74	* and A5000s seem to be).
	75	*/
	76	static void driveswap(int *ints, int dummy, int dummy2)
	77	{
336eae37	78	swap(floppy_selects[0], floppy_selects[1]);
1da177e4 LT	79	}
	80
	81	#define EXTRA_FLOPPY_PARAMS ,{ "driveswap", &driveswap, NULL, 0, 0 }
	82
	83	#endif