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