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