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