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/init.h>
13 #include <linux/linkage.h>
14 #include <linux/types.h>
15 #include <linux/mm.h>
16 #include <asm/addrspace.h>
17 #include <asm/jazz.h>
18 #include <asm/jazzdma.h>
19 #include <asm/pgtable.h>
20 
21 static inline unsigned char fd_inb(unsigned int port)
22 {
23 	unsigned char c;
24 
25 	c = *(volatile unsigned char *) port;
26 	udelay(1);
27 
28 	return c;
29 }
30 
31 static inline void fd_outb(unsigned char value, unsigned int port)
32 {
33 	*(volatile unsigned char *) port = value;
34 }
35 
36 /*
37  * How to access the floppy DMA functions.
38  */
39 static inline void fd_enable_dma(void)
40 {
41 	vdma_enable(JAZZ_FLOPPY_DMA);
42 }
43 
44 static inline void fd_disable_dma(void)
45 {
46 	vdma_disable(JAZZ_FLOPPY_DMA);
47 }
48 
49 static inline int fd_request_dma(void)
50 {
51 	return 0;
52 }
53 
54 static inline void fd_free_dma(void)
55 {
56 }
57 
58 static inline void fd_clear_dma_ff(void)
59 {
60 }
61 
62 static inline void fd_set_dma_mode(char mode)
63 {
64 	vdma_set_mode(JAZZ_FLOPPY_DMA, mode);
65 }
66 
67 static inline void fd_set_dma_addr(char *a)
68 {
69 	vdma_set_addr(JAZZ_FLOPPY_DMA, vdma_phys2log(CPHYSADDR((unsigned long)a)));
70 }
71 
72 static inline void fd_set_dma_count(unsigned int count)
73 {
74 	vdma_set_count(JAZZ_FLOPPY_DMA, count);
75 }
76 
77 static inline int fd_get_dma_residue(void)
78 {
79 	return vdma_get_residue(JAZZ_FLOPPY_DMA);
80 }
81 
82 static inline void fd_enable_irq(void)
83 {
84 }
85 
86 static inline void fd_disable_irq(void)
87 {
88 }
89 
90 static inline int fd_request_irq(void)
91 {
92 	return request_irq(FLOPPY_IRQ, floppy_interrupt,
93 	                   0, "floppy", NULL);
94 }
95 
96 static inline void fd_free_irq(void)
97 {
98 	free_irq(FLOPPY_IRQ, NULL);
99 }
100 
101 static inline unsigned long fd_getfdaddr1(void)
102 {
103 	return JAZZ_FDC_BASE;
104 }
105 
106 static inline unsigned long fd_dma_mem_alloc(unsigned long size)
107 {
108 	unsigned long mem;
109 
110 	mem = __get_dma_pages(GFP_KERNEL, get_order(size));
111 	if(!mem)
112 		return 0;
113 	vdma_alloc(CPHYSADDR(mem), size);	/* XXX error checking */
114 
115 	return mem;
116 }
117 
118 static inline void fd_dma_mem_free(unsigned long addr, unsigned long size)
119 {
120 	vdma_free(vdma_phys2log(CPHYSADDR(addr)));
121 	free_pages(addr, get_order(size));
122 }
123 
124 static inline unsigned long fd_drive_type(unsigned long n)
125 {
126 	/* XXX This is wrong for machines with ED 2.88mb disk drives like the
127 	   Olivetti M700.  Anyway, we should suck this from the ARC
128 	   firmware.  */
129 	if (n == 0)
130 		return 4;	/* 3,5", 1.44mb */
131 
132 	return 0;
133 }
134 
135 #endif /* __ASM_MACH_JAZZ_FLOPPY_H */
136