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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 | /* * linux/include/asm-arm/floppy.h * * Copyright (C) 1996-2000 Russell King * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. * * Note that we don't touch FLOPPY_DMA nor FLOPPY_IRQ here */ #ifndef __ASM_ARM_FLOPPY_H #define __ASM_ARM_FLOPPY_H #if 0 #include <asm/arch/floppy.h> #endif #define fd_outb(val,port) \ do { \ if ((port) == FD_DOR) \ fd_setdor((val)); \ else \ outb((val),(port)); \ } while(0) #define fd_inb(port) inb((port)) #define fd_request_irq() request_irq(IRQ_FLOPPYDISK,floppy_interrupt,\ SA_INTERRUPT|SA_SAMPLE_RANDOM,"floppy",NULL) #define fd_free_irq() free_irq(IRQ_FLOPPYDISK,NULL) #define fd_disable_irq() disable_irq(IRQ_FLOPPYDISK) #define fd_enable_irq() enable_irq(IRQ_FLOPPYDISK) #define fd_request_dma() request_dma(DMA_FLOPPY,"floppy") #define fd_free_dma() free_dma(DMA_FLOPPY) #define fd_disable_dma() disable_dma(DMA_FLOPPY) #define fd_enable_dma() enable_dma(DMA_FLOPPY) #define fd_clear_dma_ff() clear_dma_ff(DMA_FLOPPY) #define fd_set_dma_mode(mode) set_dma_mode(DMA_FLOPPY, (mode)) #define fd_set_dma_addr(addr) set_dma_addr(DMA_FLOPPY, virt_to_bus((addr))) #define fd_set_dma_count(len) set_dma_count(DMA_FLOPPY, (len)) #define fd_cacheflush(addr,sz) /* need to clean up dma.h */ #define DMA_FLOPPYDISK DMA_FLOPPY /* Floppy_selects is the list of DOR's to select drive fd * * On initialisation, the floppy list is scanned, and the drives allocated * in the order that they are found. This is done by seeking the drive * to a non-zero track, and then restoring it to track 0. If an error occurs, * then there is no floppy drive present. [to be put back in again] */ static unsigned char floppy_selects[2][4] = { { 0x10, 0x21, 0x23, 0x33 }, { 0x10, 0x21, 0x23, 0x33 } }; #define fd_setdor(dor) \ do { \ int new_dor = (dor); \ if (new_dor & 0xf0) \ new_dor = (new_dor & 0x0c) | floppy_selects[fdc][new_dor & 3]; \ else \ new_dor &= 0x0c; \ outb(new_dor, FD_DOR); \ } while (0) /* * Someday, we'll automatically detect which drives are present... */ static inline void fd_scandrives (void) { #if 0 int floppy, drive_count; fd_disable_irq(); raw_cmd = &default_raw_cmd; raw_cmd->flags = FD_RAW_SPIN | FD_RAW_NEED_SEEK; raw_cmd->track = 0; raw_cmd->rate = ?; drive_count = 0; for (floppy = 0; floppy < 4; floppy ++) { current_drive = drive_count; /* * Turn on floppy motor */ if (start_motor(redo_fd_request)) continue; /* * Set up FDC */ fdc_specify(); /* * Tell FDC to recalibrate */ output_byte(FD_RECALIBRATE); LAST_OUT(UNIT(floppy)); /* wait for command to complete */ if (!successful) { int i; for (i = drive_count; i < 3; i--) floppy_selects[fdc][i] = floppy_selects[fdc][i + 1]; floppy_selects[fdc][3] = 0; floppy -= 1; } else drive_count++; } #else floppy_selects[0][0] = 0x10; floppy_selects[0][1] = 0x21; floppy_selects[0][2] = 0x23; floppy_selects[0][3] = 0x33; #endif } #define FDC1 (0x3f0) #define FLOPPY0_TYPE 4 #define FLOPPY1_TYPE 4 #define N_FDC 1 #define N_DRIVE 4 #define FLOPPY_MOTOR_MASK 0xf0 #define CROSS_64KB(a,s) (0) /* * This allows people to reverse the order of * fd0 and fd1, in case their hardware is * strangely connected (as some RiscPCs * and A5000s seem to be). */ static void driveswap(int *ints, int dummy, int dummy2) { floppy_selects[0][0] ^= floppy_selects[0][1]; floppy_selects[0][1] ^= floppy_selects[0][0]; floppy_selects[0][0] ^= floppy_selects[0][1]; } #define EXTRA_FLOPPY_PARAMS ,{ "driveswap", &driveswap, NULL, 0, 0 } #endif |