| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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_PPC64_FLOPPY_H |
| 11 | #define __ASM_PPC64_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) ppc64_fd_dma_setup(addr,size,mode,io) |
| 39 | |
| 40 | static __inline__ int |
| 41 | ppc64_fd_dma_setup(char *addr, unsigned long size, 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 | |
| 62 | /* remember this one as prev */ |
| 63 | prev_addr = addr; |
| 64 | prev_size = size; |
| 65 | prev_dir = dir; |
| 66 | |
| 67 | fd_clear_dma_ff(); |
| 68 | fd_cacheflush(addr, size); |
| 69 | fd_set_dma_mode(mode); |
| 70 | set_dma_addr(FLOPPY_DMA, bus_addr); |
| 71 | fd_set_dma_count(size); |
| 72 | virtual_dma_port = io; |
| 73 | fd_enable_dma(); |
| 74 | |
| 75 | return 0; |
| 76 | } |
| 77 | |
| 78 | #endif /* CONFIG_PCI */ |
| 79 | |
| 80 | __inline__ void virtual_dma_init(void) |
| 81 | { |
| 82 | /* Nothing to do on PowerPC */ |
| 83 | } |
| 84 | |
| 85 | static int FDC1 = 0x3f0; |
| 86 | static int FDC2 = -1; |
| 87 | |
| 88 | /* |
| 89 | * Again, the CMOS information not available |
| 90 | */ |
| 91 | #define FLOPPY0_TYPE 6 |
| 92 | #define FLOPPY1_TYPE 0 |
| 93 | |
| 94 | #define N_FDC 2 /* Don't change this! */ |
| 95 | #define N_DRIVE 8 |
| 96 | |
| 97 | #define FLOPPY_MOTOR_MASK 0xf0 |
| 98 | |
| 99 | /* |
| 100 | * The PowerPC has no problems with floppy DMA crossing 64k borders. |
| 101 | */ |
| 102 | #define CROSS_64KB(a,s) (0) |
| 103 | |
| 104 | #define EXTRA_FLOPPY_PARAMS |
| 105 | |
| 106 | #endif /* __ASM_PPC64_FLOPPY_H */ |