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[/] [or1k/] [tags/] [before_ORP/] [uclinux/] [uClinux-2.0.x/] [include/] [asm-armnommu/] [floppy.h] - Rev 1765
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/* * linux/include/asm-arm/floppy.h * * (C) 1996 Russell King */ #ifndef __ASM_ARM_FLOPPY_H #define __ASM_ARM_FLOPPY_H #if 0 #include <asm/arch/floppy.h> #endif #define fd_outb(val,port) outb((val),(port)) #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(FLOPPY_DMA,"floppy") #define fd_free_dma() free_dma(FLOPPY_DMA) #define fd_disable_dma() disable_dma(FLOPPY_DMA) #define fd_enable_dma() enable_dma(FLOPPY_DMA) #define fd_clear_dma_ff() clear_dma_ff(FLOPPY_DMA) #define fd_set_dma_mode(mode) set_dma_mode(FLOPPY_DMA, (mode)) #define fd_set_dma_addr(addr) set_dma_addr(FLOPPY_DMA, (addr)) #define fd_set_dma_count(len) set_dma_count(FLOPPY_DMA, (len)) #define fd_cacheflush(addr,sz) /* 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) \ fd_outb((new_dor & 0x0c) | floppy_selects[fdc][new_dor & 3], FD_DOR); \ else \ fd_outb((new_dor & 0x0c), FD_DOR); \ } while (0) /* * Someday, we'll automatically detect which drives are present... */ extern __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) static int FDC2 = -1; #define FLOPPY0_TYPE 4 #define FLOPPY1_TYPE 4 #define N_FDC 1 #define N_DRIVE 8 #define FLOPPY_MOTOR_MASK 0xf0 #define CROSS_64KB(a,s) (0) #endif