floppy.h

 1/*
 2 * Architecture specific parts of the Floppy driver
 3 *
 4 * This file is subject to the terms and conditions of the GNU General Public
 5 * License.  See the file "COPYING" in the main directory of this archive
 6 * for more details.
 7 *
 8 * Copyright (C) 1995
 9 */
10#ifndef __ASM_ALPHA_FLOPPY_H
11#define __ASM_ALPHA_FLOPPY_H
12
13
14#define fd_inb(base, reg)		inb_p((base) + (reg))
15#define fd_outb(value, base, reg)	outb_p(value, (base) + (reg))
16
17#define fd_enable_dma()         enable_dma(FLOPPY_DMA)
18#define fd_disable_dma()        disable_dma(FLOPPY_DMA)
19#define fd_request_dma()        request_dma(FLOPPY_DMA,"floppy")
20#define fd_free_dma()           free_dma(FLOPPY_DMA)
21#define fd_clear_dma_ff()       clear_dma_ff(FLOPPY_DMA)
22#define fd_set_dma_mode(mode)   set_dma_mode(FLOPPY_DMA,mode)
23#define fd_set_dma_addr(addr)   set_dma_addr(FLOPPY_DMA,isa_virt_to_bus(addr))
24#define fd_set_dma_count(count) set_dma_count(FLOPPY_DMA,count)
25#define fd_enable_irq()         enable_irq(FLOPPY_IRQ)
26#define fd_disable_irq()        disable_irq(FLOPPY_IRQ)
27#define fd_request_irq()        request_irq(FLOPPY_IRQ, floppy_interrupt,\
28					    0, "floppy", NULL)
29#define fd_free_irq()           free_irq(FLOPPY_IRQ, NULL)
30
31#ifdef CONFIG_PCI
32
33#include <linux/pci.h>
34
35#define fd_dma_setup(addr,size,mode,io) alpha_fd_dma_setup(addr,size,mode,io)
36
37static __inline__ int 
38alpha_fd_dma_setup(char *addr, unsigned long size, int mode, int io)
39{
40	static unsigned long prev_size;
41	static dma_addr_t bus_addr = 0;
42	static char *prev_addr;
43	static int prev_dir;
44	int dir;
45
46	dir = (mode != DMA_MODE_READ) ? DMA_FROM_DEVICE : DMA_TO_DEVICE;
47
48	if (bus_addr 
49	    && (addr != prev_addr || size != prev_size || dir != prev_dir)) {
50		/* different from last time -- unmap prev */
51		dma_unmap_single(&isa_bridge->dev, bus_addr, prev_size,
52				 prev_dir);
53		bus_addr = 0;
54	}
55
56	if (!bus_addr)	/* need to map it */
57		bus_addr = dma_map_single(&isa_bridge->dev, addr, size, dir);
58
59	/* remember this one as prev */
60	prev_addr = addr;
61	prev_size = size;
62	prev_dir = dir;
63
64	fd_clear_dma_ff();
65	fd_set_dma_mode(mode);
66	set_dma_addr(FLOPPY_DMA, bus_addr);
67	fd_set_dma_count(size);
68	virtual_dma_port = io;
69	fd_enable_dma();
70
71	return 0;
72}
73
74#endif /* CONFIG_PCI */
75
76__inline__ void virtual_dma_init(void)
77{
78	/* Nothing to do on an Alpha */
79}
80
81static int FDC1 = 0x3f0;
82static int FDC2 = -1;
83
84/*
85 * Again, the CMOS information doesn't work on the alpha..
86 */
87#define FLOPPY0_TYPE 6
88#define FLOPPY1_TYPE 0
89
90#define N_FDC 2
91#define N_DRIVE 8
92
93#define EXTRA_FLOPPY_PARAMS
94
95#endif /* __ASM_ALPHA_FLOPPY_H */