diff options
Diffstat (limited to 'include/asm-m68k/floppy.h')
| -rw-r--r-- | include/asm-m68k/floppy.h | 254 |
1 files changed, 0 insertions, 254 deletions
diff --git a/include/asm-m68k/floppy.h b/include/asm-m68k/floppy.h deleted file mode 100644 index 697d503..0000000 --- a/include/asm-m68k/floppy.h +++ /dev/null @@ -1,254 +0,0 @@ -/* - * Implementation independent bits of the Floppy driver. - * - * much of this file is derived from what was originally the Q40 floppy driver. - * - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - * - * Copyright (C) 1999, 2000, 2001 - * - * Sun3x support added 2/4/2000 Sam Creasey (sammy@sammy.net) - * - */ - -#include <asm/io.h> - -#include <linux/vmalloc.h> - -asmlinkage irqreturn_t floppy_hardint(int irq, void *dev_id); - -/* constants... */ - -#undef MAX_DMA_ADDRESS -#define MAX_DMA_ADDRESS 0x00 /* nothing like that */ - - -/* - * Again, the CMOS information doesn't work on m68k.. - */ -#define FLOPPY0_TYPE (MACH_IS_Q40 ? 6 : 4) -#define FLOPPY1_TYPE 0 - -/* basically PC init + set use_virtual_dma */ -#define FDC1 m68k_floppy_init() - -#define N_FDC 1 -#define N_DRIVE 8 - - -/* vdma globals adapted from asm-i386/floppy.h */ - -static int virtual_dma_count=0; -static int virtual_dma_residue=0; -static char *virtual_dma_addr=NULL; -static int virtual_dma_mode=0; -static int doing_pdma=0; - -#include <asm/sun3xflop.h> - -extern spinlock_t dma_spin_lock; - -static __inline__ unsigned long claim_dma_lock(void) -{ - unsigned long flags; - spin_lock_irqsave(&dma_spin_lock, flags); - return flags; -} - -static __inline__ void release_dma_lock(unsigned long flags) -{ - spin_unlock_irqrestore(&dma_spin_lock, flags); -} - - -static __inline__ unsigned char fd_inb(int port) -{ - if(MACH_IS_Q40) - return inb_p(port); - else if(MACH_IS_SUN3X) - return sun3x_82072_fd_inb(port); - return 0; -} - -static __inline__ void fd_outb(unsigned char value, int port) -{ - if(MACH_IS_Q40) - outb_p(value, port); - else if(MACH_IS_SUN3X) - sun3x_82072_fd_outb(value, port); -} - - -static int fd_request_irq(void) -{ - if(MACH_IS_Q40) - return request_irq(FLOPPY_IRQ, floppy_hardint, - IRQF_DISABLED, "floppy", floppy_hardint); - else if(MACH_IS_SUN3X) - return sun3xflop_request_irq(); - return -ENXIO; -} - -static void fd_free_irq(void) -{ - if(MACH_IS_Q40) - free_irq(FLOPPY_IRQ, floppy_hardint); -} - -#define fd_request_dma() vdma_request_dma(FLOPPY_DMA,"floppy") -#define fd_get_dma_residue() vdma_get_dma_residue(FLOPPY_DMA) -#define fd_dma_mem_alloc(size) vdma_mem_alloc(size) -#define fd_dma_setup(addr, size, mode, io) vdma_dma_setup(addr, size, mode, io) - -#define fd_enable_irq() /* nothing... */ -#define fd_disable_irq() /* nothing... */ - -#define fd_free_dma() /* nothing */ - -/* No 64k boundary crossing problems on Q40 - no DMA at all */ -#define CROSS_64KB(a,s) (0) - -#define DMA_MODE_READ 0x44 /* i386 look-alike */ -#define DMA_MODE_WRITE 0x48 - - -static int m68k_floppy_init(void) -{ - use_virtual_dma =1; - can_use_virtual_dma = 1; - - - if (MACH_IS_Q40) - return 0x3f0; - else if(MACH_IS_SUN3X) - return sun3xflop_init(); - else - return -1; -} - - -static int vdma_request_dma(unsigned int dmanr, const char * device_id) -{ - return 0; -} - - -static int vdma_get_dma_residue(unsigned int dummy) -{ - return virtual_dma_count + virtual_dma_residue; -} - - -static unsigned long vdma_mem_alloc(unsigned long size) -{ - return (unsigned long) vmalloc(size); - -} - -static void _fd_dma_mem_free(unsigned long addr, unsigned long size) -{ - vfree((void *)addr); -} -#define fd_dma_mem_free(addr,size) _fd_dma_mem_free(addr, size) - - -/* choose_dma_mode ???*/ - -static int vdma_dma_setup(char *addr, unsigned long size, int mode, int io) -{ - doing_pdma = 1; - virtual_dma_port = (MACH_IS_Q40 ? io : 0); - virtual_dma_mode = (mode == DMA_MODE_WRITE); - virtual_dma_addr = addr; - virtual_dma_count = size; - virtual_dma_residue = 0; - return 0; -} - - - -static void fd_disable_dma(void) -{ - doing_pdma = 0; - virtual_dma_residue += virtual_dma_count; - virtual_dma_count=0; -} - - - -/* this is the only truly Q40 specific function */ - -asmlinkage irqreturn_t floppy_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; - } - -#ifdef TRACE_FLPY_INT - if(!calls) - bytes = virtual_dma_count; -#endif - - { - register int lcount; - register char *lptr; - - /* serve 1st byte fast: */ - - st=1; - for(lcount=virtual_dma_count, lptr=virtual_dma_addr; - lcount; lcount--, lptr++) { - st=inb(virtual_dma_port+4) & 0xa0 ; - if(st != 0xa0) - break; - if(virtual_dma_mode) - outb_p(*lptr, virtual_dma_port+5); - else - *lptr = inb_p(virtual_dma_port+5); - } - - virtual_dma_count = lcount; - virtual_dma_addr = lptr; - st = inb(virtual_dma_port+4); - } - -#ifdef TRACE_FLPY_INT - calls++; -#endif - if(st == 0x20) - return IRQ_HANDLED; - if(!(st & 0x20)) { - virtual_dma_residue += virtual_dma_count; - virtual_dma_count=0; -#ifdef TRACE_FLPY_INT - printk("count=%x, residue=%x calls=%d bytes=%d dma_wait=%d\n", - virtual_dma_count, virtual_dma_residue, calls, bytes, - dma_wait); - calls = 0; - dma_wait=0; -#endif - doing_pdma = 0; - floppy_interrupt(irq, dev_id); - return IRQ_HANDLED; - } -#ifdef TRACE_FLPY_INT - if(!virtual_dma_count) - dma_wait++; -#endif - return IRQ_HANDLED; -} - -#define EXTRA_FLOPPY_PARAMS |