aboutsummaryrefslogtreecommitdiff
path: root/arch/mips/include/asm/mach-jazz/floppy.h
blob: 56e9ca6ae426b28923c57f084b82ede0411193db (plain)
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
/*
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
 * for more details.
 *
 * Copyright (C) 1998, 2003 by Ralf Baechle
 */
#ifndef __ASM_MACH_JAZZ_FLOPPY_H
#define __ASM_MACH_JAZZ_FLOPPY_H

#include <linux/delay.h>
#include <linux/init.h>
#include <linux/linkage.h>
#include <linux/types.h>
#include <linux/mm.h>
#include <asm/addrspace.h>
#include <asm/jazz.h>
#include <asm/jazzdma.h>
#include <asm/pgtable.h>

static inline unsigned char fd_inb(unsigned int port)
{
	unsigned char c;

	c = *(volatile unsigned char *) port;
	udelay(1);

	return c;
}

static inline void fd_outb(unsigned char value, unsigned int port)
{
	*(volatile unsigned char *) port = value;
}

/*
 * How to access the floppy DMA functions.
 */
static inline void fd_enable_dma(void)
{
	vdma_enable(JAZZ_FLOPPY_DMA);
}

static inline void fd_disable_dma(void)
{
	vdma_disable(JAZZ_FLOPPY_DMA);
}

static inline int fd_request_dma(void)
{
	return 0;
}

static inline void fd_free_dma(void)
{
}

static inline void fd_clear_dma_ff(void)
{
}

static inline void fd_set_dma_mode(char mode)
{
	vdma_set_mode(JAZZ_FLOPPY_DMA, mode);
}

static inline void fd_set_dma_addr(char *a)
{
	vdma_set_addr(JAZZ_FLOPPY_DMA, vdma_phys2log(CPHYSADDR((unsigned long)a)));
}

static inline void fd_set_dma_count(unsigned int count)
{
	vdma_set_count(JAZZ_FLOPPY_DMA, count);
}

static inline int fd_get_dma_residue(void)
{
	return vdma_get_residue(JAZZ_FLOPPY_DMA);
}

static inline void fd_enable_irq(void)
{
}

static inline void fd_disable_irq(void)
{
}

static inline int fd_request_irq(void)
{
	return request_irq(FLOPPY_IRQ, floppy_interrupt,
	                   IRQF_DISABLED, "floppy", NULL);
}

static inline void fd_free_irq(void)
{
	free_irq(FLOPPY_IRQ, NULL);
}

static inline unsigned long fd_getfdaddr1(void)
{
	return JAZZ_FDC_BASE;
}

static inline unsigned long fd_dma_mem_alloc(unsigned long size)
{
	unsigned long mem;

	mem = __get_dma_pages(GFP_KERNEL, get_order(size));
	if(!mem)
		return 0;
	vdma_alloc(CPHYSADDR(mem), size);	/* XXX error checking */

	return mem;
}

static inline void fd_dma_mem_free(unsigned long addr, unsigned long size)
{
	vdma_free(vdma_phys2log(CPHYSADDR(addr)));
	free_pages(addr, get_order(size));
}

static inline unsigned long fd_drive_type(unsigned long n)
{
	/* XXX This is wrong for machines with ED 2.88mb disk drives like the
	   Olivetti M700.  Anyway, we should suck this from the ARC
	   firmware.  */
	if (n == 0)
		return 4;	/* 3,5", 1.44mb */

	return 0;
}

#endif /* __ASM_MACH_JAZZ_FLOPPY_H */