diff options
Diffstat (limited to 'include/asm-powerpc/floppy.h')
-rw-r--r-- | include/asm-powerpc/floppy.h | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/include/asm-powerpc/floppy.h b/include/asm-powerpc/floppy.h new file mode 100644 index 000000000000..64276a3f6153 --- /dev/null +++ b/include/asm-powerpc/floppy.h | |||
@@ -0,0 +1,105 @@ | |||
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_POWERPC_FLOPPY_H | ||
11 | #define __ASM_POWERPC_FLOPPY_H | ||
12 | |||
13 | #include <linux/config.h> | ||
14 | #include <asm/machdep.h> | ||
15 | |||
16 | #define fd_inb(port) inb_p(port) | ||
17 | #define fd_outb(value,port) outb_p(value,port) | ||
18 | |||
19 | #define fd_enable_dma() enable_dma(FLOPPY_DMA) | ||
20 | #define fd_disable_dma() disable_dma(FLOPPY_DMA) | ||
21 | #define fd_request_dma() request_dma(FLOPPY_DMA, "floppy") | ||
22 | #define fd_free_dma() free_dma(FLOPPY_DMA) | ||
23 | #define fd_clear_dma_ff() clear_dma_ff(FLOPPY_DMA) | ||
24 | #define fd_set_dma_mode(mode) set_dma_mode(FLOPPY_DMA, mode) | ||
25 | #define fd_set_dma_count(count) set_dma_count(FLOPPY_DMA, count) | ||
26 | #define fd_enable_irq() enable_irq(FLOPPY_IRQ) | ||
27 | #define fd_disable_irq() disable_irq(FLOPPY_IRQ) | ||
28 | #define fd_cacheflush(addr,size) /* nothing */ | ||
29 | #define fd_request_irq() request_irq(FLOPPY_IRQ, floppy_interrupt, \ | ||
30 | SA_INTERRUPT|SA_SAMPLE_RANDOM, \ | ||
31 | "floppy", NULL) | ||
32 | #define fd_free_irq() free_irq(FLOPPY_IRQ, NULL); | ||
33 | |||
34 | #ifdef CONFIG_PCI | ||
35 | |||
36 | #include <linux/pci.h> | ||
37 | |||
38 | #define fd_dma_setup(addr,size,mode,io) powerpc_fd_dma_setup(addr,size,mode,io) | ||
39 | |||
40 | static __inline__ int powerpc_fd_dma_setup(char *addr, unsigned long size, | ||
41 | int mode, int io) | ||
42 | { | ||
43 | static unsigned long prev_size; | ||
44 | static dma_addr_t bus_addr = 0; | ||
45 | static char *prev_addr; | ||
46 | static int prev_dir; | ||
47 | int dir; | ||
48 | |||
49 | dir = (mode == DMA_MODE_READ) ? PCI_DMA_FROMDEVICE : PCI_DMA_TODEVICE; | ||
50 | |||
51 | if (bus_addr | ||
52 | && (addr != prev_addr || size != prev_size || dir != prev_dir)) { | ||
53 | /* different from last time -- unmap prev */ | ||
54 | pci_unmap_single(NULL, bus_addr, prev_size, prev_dir); | ||
55 | bus_addr = 0; | ||
56 | } | ||
57 | |||
58 | if (!bus_addr) /* need to map it */ | ||
59 | bus_addr = pci_map_single(NULL, addr, size, dir); | ||
60 | |||
61 | /* remember this one as prev */ | ||
62 | prev_addr = addr; | ||
63 | prev_size = size; | ||
64 | prev_dir = dir; | ||
65 | |||
66 | fd_clear_dma_ff(); | ||
67 | fd_cacheflush(addr, size); | ||
68 | fd_set_dma_mode(mode); | ||
69 | set_dma_addr(FLOPPY_DMA, bus_addr); | ||
70 | fd_set_dma_count(size); | ||
71 | virtual_dma_port = io; | ||
72 | fd_enable_dma(); | ||
73 | |||
74 | return 0; | ||
75 | } | ||
76 | |||
77 | #endif /* CONFIG_PCI */ | ||
78 | |||
79 | __inline__ void virtual_dma_init(void) | ||
80 | { | ||
81 | /* Nothing to do on PowerPC */ | ||
82 | } | ||
83 | |||
84 | static int FDC1 = 0x3f0; | ||
85 | static int FDC2 = -1; | ||
86 | |||
87 | /* | ||
88 | * Again, the CMOS information not available | ||
89 | */ | ||
90 | #define FLOPPY0_TYPE 6 | ||
91 | #define FLOPPY1_TYPE 0 | ||
92 | |||
93 | #define N_FDC 2 /* Don't change this! */ | ||
94 | #define N_DRIVE 8 | ||
95 | |||
96 | #define FLOPPY_MOTOR_MASK 0xf0 | ||
97 | |||
98 | /* | ||
99 | * The PowerPC has no problems with floppy DMA crossing 64k borders. | ||
100 | */ | ||
101 | #define CROSS_64KB(a,s) (0) | ||
102 | |||
103 | #define EXTRA_FLOPPY_PARAMS | ||
104 | |||
105 | #endif /* __ASM_POWERPC_FLOPPY_H */ | ||