if_lnc_p.c

来自「基于组件方式开发操作系统的OSKIT源代码」· C语言 代码 · 共 103 行

/*
 *
 * Copyright (c) 1996 Stefan Esser <[e-mail]>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice immediately at the beginning of the file, without modification,
 *    this list of conditions, and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Absolutely no warranty of function or purpose is made by the author
 *    Stefan Esser.
 * 4. Modifications may be freely made to this file if the above conditions
 *    are met.
 *
 *	$Id: if_lnc_p.c,v 1.7.2.1 1999/05/11 23:46:22 paul Exp $
 */

#include "pci.h"
#if NPCI > 0

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/malloc.h>
#include <sys/kernel.h>
#include <pci/pcireg.h>
#include <pci/pcivar.h>

#include "lnc.h"

#define PCI_DEVICE_ID_PCNet_PCI	0x20001022

extern void *lnc_attach_ne2100_pci __P((int unit, unsigned iobase));

static const char* lnc_pci_probe __P((pcici_t tag, pcidi_t type));
static void lnc_pci_attach __P((pcici_t config_id, int unit));

static u_long lnc_pci_count = NLNC;

static struct pci_device lnc_pci_driver = {
	"lnc",
	lnc_pci_probe,
	lnc_pci_attach,
	&lnc_pci_count,
	NULL
};

DATA_SET (pcidevice_set, lnc_pci_driver);

static const char*
lnc_pci_probe (pcici_t tag, pcidi_t type)
{
	switch(type) {
	case PCI_DEVICE_ID_PCNet_PCI:
		return ("PCNet/PCI Ethernet adapter");
		break;
	default:
		break;
	}
	return (0);
}

void lncintr_sc (void*);

static void
lnc_pci_attach(config_id, unit)
	pcici_t config_id;
	int	unit;
{
	unsigned iobase;
	unsigned data;	/* scratch to make this device a bus master*/
	void *lnc; /* device specific data for interrupt handler ... */

	if ( !pci_map_port(config_id,PCI_MAP_REG_START,(u_short *)&iobase) )
	    printf("lnc%d: pci_port_map_attach failed?!\n",unit);


	/* Make this device a bus master.  This was implictly done by 
	   pci_map_port under 2.2.x -- tvf */

	data = pci_cfgread(config_id, PCIR_COMMAND, 4);
	data |= PCIM_CMD_PORTEN | PCIM_CMD_BUSMASTEREN;
	pci_cfgwrite(config_id, PCIR_COMMAND, data, 4);

	lnc = lnc_attach_ne2100_pci(unit, iobase);

	if (!lnc)
		return;
	if(!(pci_map_int(config_id, lncintr_sc, (void *)lnc, &net_imask))) {
		free (lnc, M_DEVBUF);
		return;
	}

	return;
}

#endif /* NPCI > 0 */