include/asm-alpha/parport.h

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 1 /*
 2  * parport.h: platform-specific PC-style parport initialisation
 3  *
 4  * Copyright (C) 1999 Tim Waugh <tim@cyberelk.demon.co.uk>
 5  *
 6  * This file should only be included by drivers/parport/parport_pc.c.
 7  */
 8
 9 #ifndef _ASM_AXP_PARPORT_H
 10 #define _ASM_AXP_PARPORT_H 1
 11
 12 #include <linux/config.h>
 13
 14 /* Maximum number of ports to support. It is useless to set this greater
 15  than PARPORT_MAX (in <linux/parport.h>). */
 16 #define PARPORT_PC_MAX_PORTS 8
 17
 18 /* If parport_cs (PCMCIA) is managing ports for us, we'll need the
 19  * probing routines forever; otherwise we can lose them at boot time. */
 20 #ifdef CONFIG_PARPORT_PC_PCMCIA
 21 #define __maybe_initdata
 22 #define __maybe_init
 23 #else
 24 #define __maybe_initdata __initdata
 25 #define __maybe_init __init
 26 #endif
 27
 28 static int __maybe_init parport_pc_init_pci(int irq,int dma);
 29
 30 static int user_specified __maybe_initdata =0;
 31 int __init
 32 parport_pc_init(int*io,int*io_hi,int*irq,int*dma)
 33 {
 34 int count =0, i =0;
 35
 36 if(io && *io) {
 37 /* Only probe the ports we were given. */
 38  user_specified =1;
 39 do{
 40 if(!*io_hi) *io_hi =0x400+ *io;
 41 if(parport_pc_probe_port(*(io++), *(io_hi++),
 42 *(irq++), *(dma++)))
 43  count++;
 44 }while(*io && (++i < PARPORT_PC_MAX_PORTS));
 45 }else{
 46 /* Probe all the likely ports. */
 47 if(parport_pc_probe_port(0x3bc,0x7bc, irq[0], dma[0]))
 48  count++;
 49 if(parport_pc_probe_port(0x378,0x778, irq[0], dma[0]))
 50  count++;
 51 if(parport_pc_probe_port(0x278,0x678, irq[0], dma[0]))
 52  count++;
 53  count +=parport_pc_init_pci(irq[0], dma[0]);
 54 }
 55
 56 return count;
 57 }
 58
 59 #endif/* !(_ASM_AXP_PARPORT_H) */