Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
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linux
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 */