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) 1996, 1997, 1998, 2003 by Ralf Baechle
7  */
8 #ifndef __ASM_MACH_GENERIC_FLOPPY_H
9 #define __ASM_MACH_GENERIC_FLOPPY_H
10 
11 #include <linux/delay.h>
12 #include <linux/init.h>
13 #include <linux/ioport.h>
14 #include <linux/sched.h>
15 #include <linux/linkage.h>
16 #include <linux/types.h>
17 #include <linux/mm.h>
18 
19 #include <asm/bootinfo.h>
20 #include <asm/cachectl.h>
21 #include <asm/dma.h>
22 #include <asm/floppy.h>
23 #include <asm/io.h>
24 #include <asm/irq.h>
25 #include <asm/pgtable.h>
26 
27 /*
28  * How to access the FDC's registers.
29  */
30 static inline unsigned char fd_inb(unsigned int port)
31 {
32 	return inb_p(port);
33 }
34 
35 static inline void fd_outb(unsigned char value, unsigned int port)
36 {
37 	outb_p(value, port);
38 }
39 
40 /*
41  * How to access the floppy DMA functions.
42  */
43 static inline void fd_enable_dma(void)
44 {
45 	enable_dma(FLOPPY_DMA);
46 }
47 
48 static inline void fd_disable_dma(void)
49 {
50 	disable_dma(FLOPPY_DMA);
51 }
52 
53 static inline int fd_request_dma(void)
54 {
55 	return request_dma(FLOPPY_DMA, "floppy");
56 }
57 
58 static inline void fd_free_dma(void)
59 {
60 	free_dma(FLOPPY_DMA);
61 }
62 
63 static inline void fd_clear_dma_ff(void)
64 {
65 	clear_dma_ff(FLOPPY_DMA);
66 }
67 
68 static inline void fd_set_dma_mode(char mode)
69 {
70 	set_dma_mode(FLOPPY_DMA, mode);
71 }
72 
73 static inline void fd_set_dma_addr(char *addr)
74 {
75 	set_dma_addr(FLOPPY_DMA, (unsigned long) addr);
76 }
77 
78 static inline void fd_set_dma_count(unsigned int count)
79 {
80 	set_dma_count(FLOPPY_DMA, count);
81 }
82 
83 static inline int fd_get_dma_residue(void)
84 {
85 	return get_dma_residue(FLOPPY_DMA);
86 }
87 
88 static inline void fd_enable_irq(void)
89 {
90 	enable_irq(FLOPPY_IRQ);
91 }
92 
93 static inline void fd_disable_irq(void)
94 {
95 	disable_irq(FLOPPY_IRQ);
96 }
97 
98 static inline int fd_request_irq(void)
99 {
100 	return request_irq(FLOPPY_IRQ, floppy_interrupt,
101 	                   IRQF_DISABLED, "floppy", NULL);
102 }
103 
104 static inline void fd_free_irq(void)
105 {
106 	free_irq(FLOPPY_IRQ, NULL);
107 }
108 
109 #define fd_free_irq()           free_irq(FLOPPY_IRQ, NULL);
110 
111 
112 static inline unsigned long fd_getfdaddr1(void)
113 {
114 	return 0x3f0;
115 }
116 
117 static inline unsigned long fd_dma_mem_alloc(unsigned long size)
118 {
119 	unsigned long mem;
120 
121 	mem = __get_dma_pages(GFP_KERNEL, get_order(size));
122 
123 	return mem;
124 }
125 
126 static inline void fd_dma_mem_free(unsigned long addr, unsigned long size)
127 {
128 	free_pages(addr, get_order(size));
129 }
130 
131 static inline unsigned long fd_drive_type(unsigned long n)
132 {
133 	if (n == 0)
134 		return 4;	/* 3,5", 1.44mb */
135 
136 	return 0;
137 }
138 
139 #endif /* __ASM_MACH_GENERIC_FLOPPY_H */
140