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