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