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