diff options
Diffstat (limited to 'include/asm-m68k/sun3xflop.h')
| -rw-r--r-- | include/asm-m68k/sun3xflop.h | 263 |
1 files changed, 0 insertions, 263 deletions
diff --git a/include/asm-m68k/sun3xflop.h b/include/asm-m68k/sun3xflop.h deleted file mode 100644 index 32c45f84ac6..00000000000 --- a/include/asm-m68k/sun3xflop.h +++ /dev/null @@ -1,263 +0,0 @@ -/* sun3xflop.h: Sun3/80 specific parts of the floppy driver. - * - * Derived partially from asm-sparc/floppy.h, which is: - * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu) - * - * Sun3x version 2/4/2000 Sam Creasey (sammy@sammy.net) - */ - -#ifndef __ASM_SUN3X_FLOPPY_H -#define __ASM_SUN3X_FLOPPY_H - -#include <asm/page.h> -#include <asm/pgtable.h> -#include <asm/system.h> -#include <asm/irq.h> -#include <asm/sun3x.h> - -/* default interrupt vector */ -#define SUN3X_FDC_IRQ 0x40 - -/* some constants */ -#define FCR_TC 0x1 -#define FCR_EJECT 0x2 -#define FCR_MTRON 0x4 -#define FCR_DSEL1 0x8 -#define FCR_DSEL0 0x10 - -/* We don't need no stinkin' I/O port allocation crap. */ -#undef release_region -#undef request_region -#define release_region(X, Y) do { } while(0) -#define request_region(X, Y, Z) (1) - -struct sun3xflop_private { - volatile unsigned char *status_r; - volatile unsigned char *data_r; - volatile unsigned char *fcr_r; - volatile unsigned char *fvr_r; - unsigned char fcr; -} sun3x_fdc; - -/* Super paranoid... */ -#undef HAVE_DISABLE_HLT - -/* Routines unique to each controller type on a Sun. */ -static unsigned char sun3x_82072_fd_inb(int port) -{ - static int once = 0; -// udelay(5); - switch(port & 7) { - default: - printk("floppy: Asked to read unknown port %d\n", port); - panic("floppy: Port bolixed."); - case 4: /* FD_STATUS */ - return (*sun3x_fdc.status_r) & ~STATUS_DMA; - case 5: /* FD_DATA */ - return (*sun3x_fdc.data_r); - case 7: /* FD_DIR */ - /* ugly hack, I can't find a way to actually detect the disk */ - if(!once) { - once = 1; - return 0x80; - } - return 0; - }; - panic("sun_82072_fd_inb: How did I get here?"); -} - -static void sun3x_82072_fd_outb(unsigned char value, int port) -{ -// udelay(5); - switch(port & 7) { - default: - printk("floppy: Asked to write to unknown port %d\n", port); - panic("floppy: Port bolixed."); - case 2: /* FD_DOR */ - /* Oh geese, 82072 on the Sun has no DOR register, - * so we make do with taunting the FCR. - * - * ASSUMPTIONS: There will only ever be one floppy - * drive attached to a Sun controller - * and it will be at drive zero. - */ - - { - unsigned char fcr = sun3x_fdc.fcr; - - if(value & 0x10) { - fcr |= (FCR_DSEL0 | FCR_MTRON); - } else - fcr &= ~(FCR_DSEL0 | FCR_MTRON); - - - if(fcr != sun3x_fdc.fcr) { - *(sun3x_fdc.fcr_r) = fcr; - sun3x_fdc.fcr = fcr; - } - } - break; - case 5: /* FD_DATA */ - *(sun3x_fdc.data_r) = value; - break; - case 7: /* FD_DCR */ - *(sun3x_fdc.status_r) = value; - break; - case 4: /* FD_STATUS */ - *(sun3x_fdc.status_r) = value; - break; - }; - return; -} - - -asmlinkage irqreturn_t sun3xflop_hardint(int irq, void *dev_id) -{ - register unsigned char st; - -#undef TRACE_FLPY_INT -#define NO_FLOPPY_ASSEMBLER - -#ifdef TRACE_FLPY_INT - static int calls=0; - static int bytes=0; - static int dma_wait=0; -#endif - if(!doing_pdma) { - floppy_interrupt(irq, dev_id); - return IRQ_HANDLED; - } - -// printk("doing pdma\n");// st %x\n", sun_fdc->status_82072); - -#ifdef TRACE_FLPY_INT - if(!calls) - bytes = virtual_dma_count; -#endif - - { - register int lcount; - register char *lptr; - - for(lcount=virtual_dma_count, lptr=virtual_dma_addr; - lcount; lcount--, lptr++) { -/* st=fd_inb(virtual_dma_port+4) & 0x80 ; */ - st = *(sun3x_fdc.status_r); -/* if(st != 0xa0) */ -/* break; */ - - if((st & 0x80) == 0) { - virtual_dma_count = lcount; - virtual_dma_addr = lptr; - return IRQ_HANDLED; - } - - if((st & 0x20) == 0) - break; - - if(virtual_dma_mode) -/* fd_outb(*lptr, virtual_dma_port+5); */ - *(sun3x_fdc.data_r) = *lptr; - else -/* *lptr = fd_inb(virtual_dma_port+5); */ - *lptr = *(sun3x_fdc.data_r); - } - - virtual_dma_count = lcount; - virtual_dma_addr = lptr; -/* st = fd_inb(virtual_dma_port+4); */ - st = *(sun3x_fdc.status_r); - } - -#ifdef TRACE_FLPY_INT - calls++; -#endif -// printk("st=%02x\n", st); - if(st == 0x20) - return IRQ_HANDLED; - if(!(st & 0x20)) { - virtual_dma_residue += virtual_dma_count; - virtual_dma_count=0; - doing_pdma = 0; - -#ifdef TRACE_FLPY_INT - printk("count=%x, residue=%x calls=%d bytes=%x dma_wait=%d\n", - virtual_dma_count, virtual_dma_residue, calls, bytes, - dma_wait); - calls = 0; - dma_wait=0; -#endif - - floppy_interrupt(irq, dev_id); - return IRQ_HANDLED; - } - - -#ifdef TRACE_FLPY_INT - if(!virtual_dma_count) - dma_wait++; -#endif - return IRQ_HANDLED; -} - -static int sun3xflop_request_irq(void) -{ - static int once = 0; - int error; - - if(!once) { - once = 1; - error = request_irq(FLOPPY_IRQ, sun3xflop_hardint, - IRQF_DISABLED, "floppy", NULL); - return ((error == 0) ? 0 : -1); - } else return 0; -} - -static void __init floppy_set_flags(int *ints,int param, int param2); - -static int sun3xflop_init(void) -{ - if(FLOPPY_IRQ < 0x40) - FLOPPY_IRQ = SUN3X_FDC_IRQ; - - sun3x_fdc.status_r = (volatile unsigned char *)SUN3X_FDC; - sun3x_fdc.data_r = (volatile unsigned char *)(SUN3X_FDC+1); - sun3x_fdc.fcr_r = (volatile unsigned char *)SUN3X_FDC_FCR; - sun3x_fdc.fvr_r = (volatile unsigned char *)SUN3X_FDC_FVR; - sun3x_fdc.fcr = 0; - - /* Last minute sanity check... */ - if(*sun3x_fdc.status_r == 0xff) { - return -1; - } - - *sun3x_fdc.fvr_r = FLOPPY_IRQ; - - *sun3x_fdc.fcr_r = FCR_TC; - udelay(10); - *sun3x_fdc.fcr_r = 0; - - /* Success... */ - floppy_set_flags(NULL, 1, FD_BROKEN_DCL); // I don't know how to detect this. - allowed_drive_mask = 0x01; - return (int) SUN3X_FDC; -} - -/* I'm not precisely sure this eject routine works */ -static int sun3x_eject(void) -{ - if(MACH_IS_SUN3X) { - - sun3x_fdc.fcr |= (FCR_DSEL0 | FCR_EJECT); - *(sun3x_fdc.fcr_r) = sun3x_fdc.fcr; - udelay(10); - sun3x_fdc.fcr &= ~(FCR_DSEL0 | FCR_EJECT); - *(sun3x_fdc.fcr_r) = sun3x_fdc.fcr; - } - - return 0; -} - -#define fd_eject(drive) sun3x_eject() - -#endif /* !(__ASM_SUN3X_FLOPPY_H) */ |