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@@ -1,279 +0,0 @@
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-/*
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- * Architecture specific parts of the Floppy driver
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- *
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- * This file is subject to the terms and conditions of the GNU General Public
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- * License. See the file "COPYING" in the main directory of this archive
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- * for more details.
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- *
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- * Copyright (C) 1995
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- */
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-#ifndef __ASM_X86_64_FLOPPY_H
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-#define __ASM_X86_64_FLOPPY_H
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-
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-#include <linux/vmalloc.h>
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-
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-
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-/*
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- * The DMA channel used by the floppy controller cannot access data at
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- * addresses >= 16MB
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- *
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- * Went back to the 1MB limit, as some people had problems with the floppy
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- * driver otherwise. It doesn't matter much for performance anyway, as most
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- * floppy accesses go through the track buffer.
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- */
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-#define _CROSS_64KB(a,s,vdma) \
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-(!(vdma) && ((unsigned long)(a)/K_64 != ((unsigned long)(a) + (s) - 1) / K_64))
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-
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-#define CROSS_64KB(a,s) _CROSS_64KB(a,s,use_virtual_dma & 1)
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-
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-
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-#define SW fd_routine[use_virtual_dma&1]
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-#define CSW fd_routine[can_use_virtual_dma & 1]
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-
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-
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-#define fd_inb(port) inb_p(port)
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-#define fd_outb(value,port) outb_p(value,port)
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-
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-#define fd_request_dma() CSW._request_dma(FLOPPY_DMA,"floppy")
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-#define fd_free_dma() CSW._free_dma(FLOPPY_DMA)
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-#define fd_enable_irq() enable_irq(FLOPPY_IRQ)
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-#define fd_disable_irq() disable_irq(FLOPPY_IRQ)
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-#define fd_free_irq() free_irq(FLOPPY_IRQ, NULL)
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-#define fd_get_dma_residue() SW._get_dma_residue(FLOPPY_DMA)
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-#define fd_dma_mem_alloc(size) SW._dma_mem_alloc(size)
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-#define fd_dma_setup(addr, size, mode, io) SW._dma_setup(addr, size, mode, io)
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-
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-#define FLOPPY_CAN_FALLBACK_ON_NODMA
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-
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-static int virtual_dma_count;
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-static int virtual_dma_residue;
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-static char *virtual_dma_addr;
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-static int virtual_dma_mode;
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-static int doing_pdma;
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-
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-static irqreturn_t floppy_hardint(int irq, void *dev_id)
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-{
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- register unsigned char st;
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-
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-#undef TRACE_FLPY_INT
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-
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-#ifdef TRACE_FLPY_INT
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- static int calls=0;
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- static int bytes=0;
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- static int dma_wait=0;
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-#endif
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- if (!doing_pdma)
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- return floppy_interrupt(irq, dev_id);
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-
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-#ifdef TRACE_FLPY_INT
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- if(!calls)
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- bytes = virtual_dma_count;
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-#endif
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-
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- {
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- register int lcount;
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- register char *lptr;
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-
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- st = 1;
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- for(lcount=virtual_dma_count, lptr=virtual_dma_addr;
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- lcount; lcount--, lptr++) {
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- st=inb(virtual_dma_port+4) & 0xa0 ;
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- if(st != 0xa0)
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- break;
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- if(virtual_dma_mode)
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- outb_p(*lptr, virtual_dma_port+5);
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- else
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- *lptr = inb_p(virtual_dma_port+5);
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- }
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- virtual_dma_count = lcount;
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- virtual_dma_addr = lptr;
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- st = inb(virtual_dma_port+4);
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- }
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-
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-#ifdef TRACE_FLPY_INT
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- calls++;
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-#endif
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- if(st == 0x20)
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- return IRQ_HANDLED;
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- if(!(st & 0x20)) {
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- virtual_dma_residue += virtual_dma_count;
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- virtual_dma_count=0;
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-#ifdef TRACE_FLPY_INT
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- printk("count=%x, residue=%x calls=%d bytes=%d dma_wait=%d\n",
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- virtual_dma_count, virtual_dma_residue, calls, bytes,
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- dma_wait);
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- calls = 0;
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- dma_wait=0;
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-#endif
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- doing_pdma = 0;
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- floppy_interrupt(irq, dev_id);
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- return IRQ_HANDLED;
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- }
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-#ifdef TRACE_FLPY_INT
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- if(!virtual_dma_count)
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- dma_wait++;
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-#endif
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- return IRQ_HANDLED;
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-}
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-
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-static void fd_disable_dma(void)
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-{
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- if(! (can_use_virtual_dma & 1))
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- disable_dma(FLOPPY_DMA);
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- doing_pdma = 0;
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- virtual_dma_residue += virtual_dma_count;
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- virtual_dma_count=0;
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-}
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-
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-static int vdma_request_dma(unsigned int dmanr, const char * device_id)
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-{
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- return 0;
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-}
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-
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-static void vdma_nop(unsigned int dummy)
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-{
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-}
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-
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-
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-static int vdma_get_dma_residue(unsigned int dummy)
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-{
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- return virtual_dma_count + virtual_dma_residue;
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-}
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-
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-
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-static int fd_request_irq(void)
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-{
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- if(can_use_virtual_dma)
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- return request_irq(FLOPPY_IRQ, floppy_hardint,
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- IRQF_DISABLED, "floppy", NULL);
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- else
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- return request_irq(FLOPPY_IRQ, floppy_interrupt,
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- IRQF_DISABLED, "floppy", NULL);
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-}
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-
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-static unsigned long dma_mem_alloc(unsigned long size)
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-{
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- return __get_dma_pages(GFP_KERNEL|__GFP_NORETRY,get_order(size));
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-}
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-
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-
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-static unsigned long vdma_mem_alloc(unsigned long size)
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-{
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- return (unsigned long) vmalloc(size);
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-
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-}
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-
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-#define nodma_mem_alloc(size) vdma_mem_alloc(size)
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-
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-static void _fd_dma_mem_free(unsigned long addr, unsigned long size)
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-{
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- if((unsigned long) addr >= (unsigned long) high_memory)
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- vfree((void *)addr);
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- else
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- free_pages(addr, get_order(size));
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-}
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-
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-#define fd_dma_mem_free(addr, size) _fd_dma_mem_free(addr, size)
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-
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-static void _fd_chose_dma_mode(char *addr, unsigned long size)
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-{
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- if(can_use_virtual_dma == 2) {
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- if((unsigned long) addr >= (unsigned long) high_memory ||
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- isa_virt_to_bus(addr) >= 0x1000000 ||
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- _CROSS_64KB(addr, size, 0))
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- use_virtual_dma = 1;
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- else
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- use_virtual_dma = 0;
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- } else {
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- use_virtual_dma = can_use_virtual_dma & 1;
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- }
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-}
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-
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-#define fd_chose_dma_mode(addr, size) _fd_chose_dma_mode(addr, size)
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-
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-
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-static int vdma_dma_setup(char *addr, unsigned long size, int mode, int io)
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-{
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- doing_pdma = 1;
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- virtual_dma_port = io;
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- virtual_dma_mode = (mode == DMA_MODE_WRITE);
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- virtual_dma_addr = addr;
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- virtual_dma_count = size;
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- virtual_dma_residue = 0;
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- return 0;
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-}
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-
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-static int hard_dma_setup(char *addr, unsigned long size, int mode, int io)
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-{
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-#ifdef FLOPPY_SANITY_CHECK
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- if (CROSS_64KB(addr, size)) {
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- printk("DMA crossing 64-K boundary %p-%p\n", addr, addr+size);
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- return -1;
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- }
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-#endif
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- /* actual, physical DMA */
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- doing_pdma = 0;
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- clear_dma_ff(FLOPPY_DMA);
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- set_dma_mode(FLOPPY_DMA,mode);
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- set_dma_addr(FLOPPY_DMA,isa_virt_to_bus(addr));
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- set_dma_count(FLOPPY_DMA,size);
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- enable_dma(FLOPPY_DMA);
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- return 0;
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-}
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-
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-static struct fd_routine_l {
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- int (*_request_dma)(unsigned int dmanr, const char * device_id);
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- void (*_free_dma)(unsigned int dmanr);
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- int (*_get_dma_residue)(unsigned int dummy);
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- unsigned long (*_dma_mem_alloc) (unsigned long size);
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- int (*_dma_setup)(char *addr, unsigned long size, int mode, int io);
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-} fd_routine[] = {
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- {
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- request_dma,
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- free_dma,
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- get_dma_residue,
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- dma_mem_alloc,
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- hard_dma_setup
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- },
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- {
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- vdma_request_dma,
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- vdma_nop,
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- vdma_get_dma_residue,
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- vdma_mem_alloc,
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- vdma_dma_setup
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- }
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-};
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-
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-
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-static int FDC1 = 0x3f0;
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-static int FDC2 = -1;
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-
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-/*
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- * Floppy types are stored in the rtc's CMOS RAM and so rtc_lock
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- * is needed to prevent corrupted CMOS RAM in case "insmod floppy"
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- * coincides with another rtc CMOS user. Paul G.
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- */
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-#define FLOPPY0_TYPE ({ \
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- unsigned long flags; \
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- unsigned char val; \
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- spin_lock_irqsave(&rtc_lock, flags); \
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- val = (CMOS_READ(0x10) >> 4) & 15; \
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- spin_unlock_irqrestore(&rtc_lock, flags); \
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- val; \
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-})
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-
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-#define FLOPPY1_TYPE ({ \
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- unsigned long flags; \
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- unsigned char val; \
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- spin_lock_irqsave(&rtc_lock, flags); \
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- val = CMOS_READ(0x10) & 15; \
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- spin_unlock_irqrestore(&rtc_lock, flags); \
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- val; \
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-})
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-
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-#define N_FDC 2
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-#define N_DRIVE 8
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-
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-#define EXTRA_FLOPPY_PARAMS
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-
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-#endif /* __ASM_X86_64_FLOPPY_H */
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