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
19static inline unsigned char fd_inb(unsigned int base, unsigned int reg)
20{
21	unsigned char c;
22
23	c = *(volatile unsigned char *) (base + reg);
24	udelay(1);
25
26	return c;
27}
28
29static inline void fd_outb(unsigned char value, unsigned int base, unsigned int reg)
30{
31	*(volatile unsigned char *) (base + reg) = value;
32}
33
34/*
35 * How to access the floppy DMA functions.
36 */
37static inline void fd_enable_dma(void)
38{
39	vdma_enable(JAZZ_FLOPPY_DMA);
40}
41
42static inline void fd_disable_dma(void)
43{
44	vdma_disable(JAZZ_FLOPPY_DMA);
45}
46
47static inline int fd_request_dma(void)
48{
49	return 0;
50}
51
52static inline void fd_free_dma(void)
53{
54}
55
56static inline void fd_clear_dma_ff(void)
57{
58}
59
60static inline void fd_set_dma_mode(char mode)
61{
62	vdma_set_mode(JAZZ_FLOPPY_DMA, mode);
63}
64
65static inline void fd_set_dma_addr(char *a)
66{
67	vdma_set_addr(JAZZ_FLOPPY_DMA, vdma_phys2log(CPHYSADDR((unsigned long)a)));
68}
69
70static inline void fd_set_dma_count(unsigned int count)
71{
72	vdma_set_count(JAZZ_FLOPPY_DMA, count);
73}
74
75static inline int fd_get_dma_residue(void)
76{
77	return vdma_get_residue(JAZZ_FLOPPY_DMA);
78}
79
80static inline void fd_enable_irq(void)
81{
82}
83
84static inline void fd_disable_irq(void)
85{
86}
87
88static inline int fd_request_irq(void)
89{
90	return request_irq(FLOPPY_IRQ, floppy_interrupt,
91			   0, "floppy", NULL);
92}
93
94static inline void fd_free_irq(void)
95{
96	free_irq(FLOPPY_IRQ, NULL);
97}
98
99static inline unsigned long fd_getfdaddr1(void)
100{
101	return JAZZ_FDC_BASE;
102}
103
104static inline unsigned long fd_dma_mem_alloc(unsigned long size)
105{
106	unsigned long mem;
107
108	mem = __get_dma_pages(GFP_KERNEL, get_order(size));
109	if(!mem)
110		return 0;
111	vdma_alloc(CPHYSADDR(mem), size);	/* XXX error checking */
112
113	return mem;
114}
115
116static inline void fd_dma_mem_free(unsigned long addr, unsigned long size)
117{
118	vdma_free(vdma_phys2log(CPHYSADDR(addr)));
119	free_pages(addr, get_order(size));
120}
121
122static inline unsigned long fd_drive_type(unsigned long n)
123{
124	/* XXX This is wrong for machines with ED 2.88mb disk drives like the
125	   Olivetti M700.  Anyway, we should suck this from the ARC
126	   firmware.  */
127	if (n == 0)
128		return 4;	/* 3,5", 1.44mb */
129
130	return 0;
131}
132
133#endif /* __ASM_MACH_JAZZ_FLOPPY_H */
134