1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0-only */
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * arch/arm/include/asm/floppy.h
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * Copyright (C) 1996-2000 Russell King
6*4882a593Smuzhiyun *
7*4882a593Smuzhiyun * Note that we don't touch FLOPPY_DMA nor FLOPPY_IRQ here
8*4882a593Smuzhiyun */
9*4882a593Smuzhiyun #ifndef __ASM_ARM_FLOPPY_H
10*4882a593Smuzhiyun #define __ASM_ARM_FLOPPY_H
11*4882a593Smuzhiyun
12*4882a593Smuzhiyun #define fd_outb(val, base, reg) \
13*4882a593Smuzhiyun do { \
14*4882a593Smuzhiyun int new_val = (val); \
15*4882a593Smuzhiyun if ((reg) == FD_DOR) { \
16*4882a593Smuzhiyun if (new_val & 0xf0) \
17*4882a593Smuzhiyun new_val = (new_val & 0x0c) | \
18*4882a593Smuzhiyun floppy_selects[new_val & 3]; \
19*4882a593Smuzhiyun else \
20*4882a593Smuzhiyun new_val &= 0x0c; \
21*4882a593Smuzhiyun } \
22*4882a593Smuzhiyun outb(new_val, (base) + (reg)); \
23*4882a593Smuzhiyun } while(0)
24*4882a593Smuzhiyun
25*4882a593Smuzhiyun #define fd_inb(base, reg) inb((base) + (reg))
26*4882a593Smuzhiyun #define fd_request_irq() request_irq(IRQ_FLOPPYDISK,floppy_interrupt,\
27*4882a593Smuzhiyun 0,"floppy",NULL)
28*4882a593Smuzhiyun #define fd_free_irq() free_irq(IRQ_FLOPPYDISK,NULL)
29*4882a593Smuzhiyun #define fd_disable_irq() disable_irq(IRQ_FLOPPYDISK)
30*4882a593Smuzhiyun #define fd_enable_irq() enable_irq(IRQ_FLOPPYDISK)
31*4882a593Smuzhiyun
fd_dma_setup(void * data,unsigned int length,unsigned int mode,unsigned long addr)32*4882a593Smuzhiyun static inline int fd_dma_setup(void *data, unsigned int length,
33*4882a593Smuzhiyun unsigned int mode, unsigned long addr)
34*4882a593Smuzhiyun {
35*4882a593Smuzhiyun set_dma_mode(DMA_FLOPPY, mode);
36*4882a593Smuzhiyun __set_dma_addr(DMA_FLOPPY, data);
37*4882a593Smuzhiyun set_dma_count(DMA_FLOPPY, length);
38*4882a593Smuzhiyun virtual_dma_port = addr;
39*4882a593Smuzhiyun enable_dma(DMA_FLOPPY);
40*4882a593Smuzhiyun return 0;
41*4882a593Smuzhiyun }
42*4882a593Smuzhiyun #define fd_dma_setup fd_dma_setup
43*4882a593Smuzhiyun
44*4882a593Smuzhiyun #define fd_request_dma() request_dma(DMA_FLOPPY,"floppy")
45*4882a593Smuzhiyun #define fd_free_dma() free_dma(DMA_FLOPPY)
46*4882a593Smuzhiyun #define fd_disable_dma() disable_dma(DMA_FLOPPY)
47*4882a593Smuzhiyun
48*4882a593Smuzhiyun /* need to clean up dma.h */
49*4882a593Smuzhiyun #define DMA_FLOPPYDISK DMA_FLOPPY
50*4882a593Smuzhiyun
51*4882a593Smuzhiyun /* Floppy_selects is the list of DOR's to select drive fd
52*4882a593Smuzhiyun *
53*4882a593Smuzhiyun * On initialisation, the floppy list is scanned, and the drives allocated
54*4882a593Smuzhiyun * in the order that they are found. This is done by seeking the drive
55*4882a593Smuzhiyun * to a non-zero track, and then restoring it to track 0. If an error occurs,
56*4882a593Smuzhiyun * then there is no floppy drive present. [to be put back in again]
57*4882a593Smuzhiyun */
58*4882a593Smuzhiyun static unsigned char floppy_selects[4] = { 0x10, 0x21, 0x23, 0x33 };
59*4882a593Smuzhiyun
60*4882a593Smuzhiyun #define FDC1 (0x3f0)
61*4882a593Smuzhiyun
62*4882a593Smuzhiyun #define FLOPPY0_TYPE 4
63*4882a593Smuzhiyun #define FLOPPY1_TYPE 4
64*4882a593Smuzhiyun
65*4882a593Smuzhiyun #define N_FDC 1
66*4882a593Smuzhiyun #define N_DRIVE 4
67*4882a593Smuzhiyun
68*4882a593Smuzhiyun #define CROSS_64KB(a,s) (0)
69*4882a593Smuzhiyun
70*4882a593Smuzhiyun /*
71*4882a593Smuzhiyun * This allows people to reverse the order of
72*4882a593Smuzhiyun * fd0 and fd1, in case their hardware is
73*4882a593Smuzhiyun * strangely connected (as some RiscPCs
74*4882a593Smuzhiyun * and A5000s seem to be).
75*4882a593Smuzhiyun */
driveswap(int * ints,int dummy,int dummy2)76*4882a593Smuzhiyun static void driveswap(int *ints, int dummy, int dummy2)
77*4882a593Smuzhiyun {
78*4882a593Smuzhiyun swap(floppy_selects[0], floppy_selects[1]);
79*4882a593Smuzhiyun }
80*4882a593Smuzhiyun
81*4882a593Smuzhiyun #define EXTRA_FLOPPY_PARAMS ,{ "driveswap", &driveswap, NULL, 0, 0 }
82*4882a593Smuzhiyun
83*4882a593Smuzhiyun #endif
84