cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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floppy.h (2318B)

      1/* SPDX-License-Identifier: GPL-2.0-only */
      2/*
      3 *  arch/arm/include/asm/floppy.h
      4 *
      5 *  Copyright (C) 1996-2000 Russell King
      6 *
      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
     11
     12#define fd_outb(val, base, reg)						\
     13	do {								\
     14		int new_val = (val);					\
     15		if ((reg) == FD_DOR) {					\
     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, (base) + (reg));				\
     23	} while(0)
     24
     25#define fd_inb(base, reg)	inb((base) + (reg))
     26#define fd_request_irq()	request_irq(IRQ_FLOPPYDISK,floppy_interrupt,\
     27					    0,"floppy",NULL)
     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
     32static 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
     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)
     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 */
     58static unsigned char floppy_selects[4] = { 0x10, 0x21, 0x23, 0x33 };
     59
     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
     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 */
     76static void driveswap(int *ints, int dummy, int dummy2)
     77{
     78	swap(floppy_selects[0], floppy_selects[1]);
     79}
     80
     81#define EXTRA_FLOPPY_PARAMS ,{ "driveswap", &driveswap, NULL, 0, 0 }
     82	
     83#endif