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 
20 static 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 
30 static 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  */
38 static inline void fd_enable_dma(void)
39 {
40 	vdma_enable(JAZZ_FLOPPY_DMA);
41 }
42 
43 static inline void fd_disable_dma(void)
44 {
45 	vdma_disable(JAZZ_FLOPPY_DMA);
46 }
47 
48 static inline int fd_request_dma(void)
49 {
50 	return 0;
51 }
52 
53 static inline void fd_free_dma(void)
54 {
55 }
56 
57 static inline void fd_clear_dma_ff(void)
58 {
59 }
60 
61 static inline void fd_set_dma_mode(char mode)
62 {
63 	vdma_set_mode(JAZZ_FLOPPY_DMA, mode);
64 }
65 
66 static inline void fd_set_dma_addr(char *a)
67 {
68 	vdma_set_addr(JAZZ_FLOPPY_DMA, vdma_phys2log(CPHYSADDR((unsigned long)a)));
69 }
70 
71 static inline void fd_set_dma_count(unsigned int count)
72 {
73 	vdma_set_count(JAZZ_FLOPPY_DMA, count);
74 }
75 
76 static inline int fd_get_dma_residue(void)
77 {
78 	return vdma_get_residue(JAZZ_FLOPPY_DMA);
79 }
80 
81 static inline void fd_enable_irq(void)
82 {
83 }
84 
85 static inline void fd_disable_irq(void)
86 {
87 }
88 
89 static inline int fd_request_irq(void)
90 {
91 	return request_irq(FLOPPY_IRQ, floppy_interrupt,
92 			   0, "floppy", NULL);
93 }
94 
95 static inline void fd_free_irq(void)
96 {
97 	free_irq(FLOPPY_IRQ, NULL);
98 }
99 
100 static inline unsigned long fd_getfdaddr1(void)
101 {
102 	return JAZZ_FDC_BASE;
103 }
104 
105 static 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 
117 static 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 
123 static 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