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4.4.0-1128-aws
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asm
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floppy.h
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/* * arch/arm/include/asm/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 <mach/floppy.h> #endif #define fd_outb(val,port) \ do { \ if ((port) == (u32)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,\ 0,"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) static inline int fd_dma_setup(void *data, unsigned int length, unsigned int mode, unsigned long addr) { set_dma_mode(DMA_FLOPPY, mode); __set_dma_addr(DMA_FLOPPY, data); set_dma_count(DMA_FLOPPY, length); virtual_dma_port = addr; enable_dma(DMA_FLOPPY); return 0; } #define fd_dma_setup fd_dma_setup #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) /* 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 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