1/*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License.  See the file "COPYING" in the main directory of this archive
4 * for more details.
5 *
6 * Copyright (C) 1998, 2003 by Ralf Baechle
7 */
8#ifndef __ASM_MACH_JAZZ_FLOPPY_H
9#define __ASM_MACH_JAZZ_FLOPPY_H
10
11#include <linux/delay.h>
12#include <linux/linkage.h>
13#include <linux/types.h>
14#include <linux/mm.h>
15#include <asm/addrspace.h>
16#include <asm/jazz.h>
17#include <asm/jazzdma.h>
18#include <asm/pgtable.h>
19
20static inline unsigned char fd_inb(unsigned int port)
21{
22	unsigned char c;
23
24	c = *(volatile unsigned char *) port;
25	udelay(1);
26
27	return c;
28}
29
30static inline void fd_outb(unsigned char value, unsigned int port)
31{
32	*(volatile unsigned char *) port = value;
33}
34
35/*
36 * How to access the floppy DMA functions.
37 */
38static inline void fd_enable_dma(void)
39{
40	vdma_enable(JAZZ_FLOPPY_DMA);
41}
42
43static inline void fd_disable_dma(void)
44{
45	vdma_disable(JAZZ_FLOPPY_DMA);
46}
47
48static inline int fd_request_dma(void)
49{
50	return 0;
51}
52
53static inline void fd_free_dma(void)
54{
55}
56
57static inline void fd_clear_dma_ff(void)
58{
59}
60
61static inline void fd_set_dma_mode(char mode)
62{
63	vdma_set_mode(JAZZ_FLOPPY_DMA, mode);
64}
65
66static inline void fd_set_dma_addr(char *a)
67{
68	vdma_set_addr(JAZZ_FLOPPY_DMA, vdma_phys2log(CPHYSADDR((unsigned long)a)));
69}
70
71static inline void fd_set_dma_count(unsigned int count)
72{
73	vdma_set_count(JAZZ_FLOPPY_DMA, count);
74}
75
76static inline int fd_get_dma_residue(void)
77{
78	return vdma_get_residue(JAZZ_FLOPPY_DMA);
79}
80
81static inline void fd_enable_irq(void)
82{
83}
84
85static inline void fd_disable_irq(void)
86{
87}
88
89static inline int fd_request_irq(void)
90{
91	return request_irq(FLOPPY_IRQ, floppy_interrupt,
92			   0, "floppy", NULL);
93}
94
95static inline void fd_free_irq(void)
96{
97	free_irq(FLOPPY_IRQ, NULL);
98}
99
100static inline unsigned long fd_getfdaddr1(void)
101{
102	return JAZZ_FDC_BASE;
103}
104
105static inline unsigned long fd_dma_mem_alloc(unsigned long size)
106{
107	unsigned long mem;
108
109	mem = __get_dma_pages(GFP_KERNEL, get_order(size));
110	if(!mem)
111		return 0;
112	vdma_alloc(CPHYSADDR(mem), size);	/* XXX error checking */
113
114	return mem;
115}
116
117static inline void fd_dma_mem_free(unsigned long addr, unsigned long size)
118{
119	vdma_free(vdma_phys2log(CPHYSADDR(addr)));
120	free_pages(addr, get_order(size));
121}
122
123static inline unsigned long fd_drive_type(unsigned long n)
124{
125	/* XXX This is wrong for machines with ED 2.88mb disk drives like the
126	   Olivetti M700.  Anyway, we should suck this from the ARC
127	   firmware.  */
128	if (n == 0)
129		return 4;	/* 3,5", 1.44mb */
130
131	return 0;
132}
133
134#endif /* __ASM_MACH_JAZZ_FLOPPY_H */
135