1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
|
/*
* arch/arm/include/asm/floppy.h
*
* Copyright (C) 1996-2000 Russell King
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* Note that we don't touch FLOPPY_DMA nor FLOPPY_IRQ here
*/
#ifndef __ASM_ARM_FLOPPY_H
#define __ASM_ARM_FLOPPY_H
#if 0
#include <mach/floppy.h>
#endif
#define fd_outb(val,port) \
do { \
if ((port) == (u32)FD_DOR) \
fd_setdor((val)); \
else \
outb((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[2][4] =
{
{ 0x10, 0x21, 0x23, 0x33 },
{ 0x10, 0x21, 0x23, 0x33 }
};
#define fd_setdor(dor) \
do { \
int new_dor = (dor); \
if (new_dor & 0xf0) \
new_dor = (new_dor & 0x0c) | floppy_selects[fdc][new_dor & 3]; \
else \
new_dor &= 0x0c; \
outb(new_dor, FD_DOR); \
} while (0)
/*
* Someday, we'll automatically detect which drives are present...
*/
static inline void fd_scandrives (void)
{
#if 0
int floppy, drive_count;
fd_disable_irq();
raw_cmd = &default_raw_cmd;
raw_cmd->flags = FD_RAW_SPIN | FD_RAW_NEED_SEEK;
raw_cmd->track = 0;
raw_cmd->rate = ?;
drive_count = 0;
for (floppy = 0; floppy < 4; floppy ++) {
current_drive = drive_count;
/*
* Turn on floppy motor
*/
if (start_motor(redo_fd_request))
continue;
/*
* Set up FDC
*/
fdc_specify();
/*
* Tell FDC to recalibrate
*/
output_byte(FD_RECALIBRATE);
LAST_OUT(UNIT(floppy));
/* wait for command to complete */
if (!successful) {
int i;
for (i = drive_count; i < 3; i--)
floppy_selects[fdc][i] = floppy_selects[fdc][i + 1];
floppy_selects[fdc][3] = 0;
floppy -= 1;
} else
drive_count++;
}
#else
floppy_selects[0][0] = 0x10;
floppy_selects[0][1] = 0x21;
floppy_selects[0][2] = 0x23;
floppy_selects[0][3] = 0x33;
#endif
}
#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)
{
floppy_selects[0][0] ^= floppy_selects[0][1];
floppy_selects[0][1] ^= floppy_selects[0][0];
floppy_selects[0][0] ^= floppy_selects[0][1];
}
#define EXTRA_FLOPPY_PARAMS ,{ "driveswap", &driveswap, NULL, 0, 0 }
#endif
|
