[PATCH] uml: add -ffreestanding to CFLAGS
[linux/fpc-iii.git] / include / asm-powerpc / floppy.h
blob608164c39efbc1cd00f34923e292357bed5f9a4d
1 /*
2 * Architecture specific parts of the Floppy driver
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.
8 * Copyright (C) 1995
9 */
10 #ifndef __ASM_POWERPC_FLOPPY_H
11 #define __ASM_POWERPC_FLOPPY_H
12 #ifdef __KERNEL__
14 #include <linux/config.h>
15 #include <asm/machdep.h>
17 #define fd_inb(port) inb_p(port)
18 #define fd_outb(value,port) outb_p(value,port)
20 #define fd_enable_dma() enable_dma(FLOPPY_DMA)
21 #define fd_disable_dma() disable_dma(FLOPPY_DMA)
22 #define fd_request_dma() request_dma(FLOPPY_DMA, "floppy")
23 #define fd_free_dma() free_dma(FLOPPY_DMA)
24 #define fd_clear_dma_ff() clear_dma_ff(FLOPPY_DMA)
25 #define fd_set_dma_mode(mode) set_dma_mode(FLOPPY_DMA, mode)
26 #define fd_set_dma_count(count) set_dma_count(FLOPPY_DMA, count)
27 #define fd_enable_irq() enable_irq(FLOPPY_IRQ)
28 #define fd_disable_irq() disable_irq(FLOPPY_IRQ)
29 #define fd_cacheflush(addr,size) /* nothing */
30 #define fd_request_irq() request_irq(FLOPPY_IRQ, floppy_interrupt, \
31 SA_INTERRUPT|SA_SAMPLE_RANDOM, \
32 "floppy", NULL)
33 #define fd_free_irq() free_irq(FLOPPY_IRQ, NULL);
35 #ifdef CONFIG_PCI
37 #include <linux/pci.h>
38 #include <asm/ppc-pci.h> /* for ppc64_isabridge_dev */
40 #define fd_dma_setup(addr,size,mode,io) powerpc_fd_dma_setup(addr,size,mode,io)
42 static __inline__ int powerpc_fd_dma_setup(char *addr, unsigned long size,
43 int mode, int io)
45 static unsigned long prev_size;
46 static dma_addr_t bus_addr = 0;
47 static char *prev_addr;
48 static int prev_dir;
49 int dir;
51 dir = (mode == DMA_MODE_READ) ? PCI_DMA_FROMDEVICE : PCI_DMA_TODEVICE;
53 if (bus_addr
54 && (addr != prev_addr || size != prev_size || dir != prev_dir)) {
55 /* different from last time -- unmap prev */
56 pci_unmap_single(ppc64_isabridge_dev, bus_addr, prev_size, prev_dir);
57 bus_addr = 0;
60 if (!bus_addr) /* need to map it */
61 bus_addr = pci_map_single(ppc64_isabridge_dev, addr, size, dir);
63 /* remember this one as prev */
64 prev_addr = addr;
65 prev_size = size;
66 prev_dir = dir;
68 fd_clear_dma_ff();
69 fd_cacheflush(addr, size);
70 fd_set_dma_mode(mode);
71 set_dma_addr(FLOPPY_DMA, bus_addr);
72 fd_set_dma_count(size);
73 virtual_dma_port = io;
74 fd_enable_dma();
76 return 0;
79 #endif /* CONFIG_PCI */
81 __inline__ void virtual_dma_init(void)
83 /* Nothing to do on PowerPC */
86 static int FDC1 = 0x3f0;
87 static int FDC2 = -1;
90 * Again, the CMOS information not available
92 #define FLOPPY0_TYPE 6
93 #define FLOPPY1_TYPE 0
95 #define N_FDC 2 /* Don't change this! */
96 #define N_DRIVE 8
98 #define FLOPPY_MOTOR_MASK 0xf0
101 * The PowerPC has no problems with floppy DMA crossing 64k borders.
103 #define CROSS_64KB(a,s) (0)
105 #define EXTRA_FLOPPY_PARAMS
107 #endif /* __KERNEL__ */
108 #endif /* __ASM_POWERPC_FLOPPY_H */