84 lines
2.3 KiB
C
84 lines
2.3 KiB
C
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/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* arch/arm/include/asm/floppy.h
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*
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* Copyright (C) 1996-2000 Russell King
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*
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* Note that we don't touch FLOPPY_DMA nor FLOPPY_IRQ here
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*/
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#ifndef __ASM_ARM_FLOPPY_H
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#define __ASM_ARM_FLOPPY_H
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#define fd_outb(val, base, reg) \
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do { \
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int new_val = (val); \
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if ((reg) == FD_DOR) { \
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if (new_val & 0xf0) \
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new_val = (new_val & 0x0c) | \
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floppy_selects[new_val & 3]; \
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else \
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new_val &= 0x0c; \
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} \
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outb(new_val, (base) + (reg)); \
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} while(0)
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#define fd_inb(base, reg) inb((base) + (reg))
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#define fd_request_irq() request_irq(IRQ_FLOPPYDISK,floppy_interrupt,\
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0,"floppy",NULL)
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#define fd_free_irq() free_irq(IRQ_FLOPPYDISK,NULL)
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#define fd_disable_irq() disable_irq(IRQ_FLOPPYDISK)
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#define fd_enable_irq() enable_irq(IRQ_FLOPPYDISK)
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static inline int fd_dma_setup(void *data, unsigned int length,
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unsigned int mode, unsigned long addr)
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{
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set_dma_mode(DMA_FLOPPY, mode);
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__set_dma_addr(DMA_FLOPPY, data);
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set_dma_count(DMA_FLOPPY, length);
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virtual_dma_port = addr;
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enable_dma(DMA_FLOPPY);
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return 0;
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}
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#define fd_dma_setup fd_dma_setup
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#define fd_request_dma() request_dma(DMA_FLOPPY,"floppy")
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#define fd_free_dma() free_dma(DMA_FLOPPY)
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#define fd_disable_dma() disable_dma(DMA_FLOPPY)
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/* need to clean up dma.h */
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#define DMA_FLOPPYDISK DMA_FLOPPY
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/* Floppy_selects is the list of DOR's to select drive fd
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*
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* On initialisation, the floppy list is scanned, and the drives allocated
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* in the order that they are found. This is done by seeking the drive
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* to a non-zero track, and then restoring it to track 0. If an error occurs,
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* then there is no floppy drive present. [to be put back in again]
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*/
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static unsigned char floppy_selects[4] = { 0x10, 0x21, 0x23, 0x33 };
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#define FDC1 (0x3f0)
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#define FLOPPY0_TYPE 4
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#define FLOPPY1_TYPE 4
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#define N_FDC 1
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#define N_DRIVE 4
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#define CROSS_64KB(a,s) (0)
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/*
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* This allows people to reverse the order of
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* fd0 and fd1, in case their hardware is
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* strangely connected (as some RiscPCs
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* and A5000s seem to be).
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*/
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static void driveswap(int *ints, int dummy, int dummy2)
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{
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swap(floppy_selects[0], floppy_selects[1]);
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}
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#define EXTRA_FLOPPY_PARAMS ,{ "driveswap", &driveswap, NULL, 0, 0 }
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#endif
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