cdl.c

linux-2.4.29操作系统的源码

/* $Id$
 *
 * 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) 1992 - 1997, 2000-2003 Silicon Graphics, Inc. All rights reserved.
 */

#include <linux/config.h>
#include <linux/types.h>
#include <asm/sn/sgi.h>
#include <asm/io.h>
#include <asm/sn/invent.h>
#include <asm/sn/hcl.h>
#include <asm/sn/pci/bridge.h>
#include "asm/sn/ioerror_handling.h"
#include <asm/sn/xtalk/xbow.h>

/* these get called directly in cdl_add_connpt in fops bypass hack */
extern int pcibr_attach(vertex_hdl_t);
extern int xbow_attach(vertex_hdl_t);
extern int pic_attach(vertex_hdl_t);


/*
 *    cdl: Connection and Driver List
 *
 *	We are not porting this to Linux.  Devices are registered via 
 *	the normal Linux PCI layer.  This is a very simplified version 
 *	of cdl that will allow us to register and call our very own 
 *	IO Infrastructure Drivers e.g. pcibr.
 */

#define MAX_SGI_IO_INFRA_DRVR 7

static struct cdl sgi_infrastructure_drivers[MAX_SGI_IO_INFRA_DRVR] =
{
	{ XBRIDGE_WIDGET_PART_NUM, XBRIDGE_WIDGET_MFGR_NUM, pcibr_attach /* &pcibr_fops  */},
	{ BRIDGE_WIDGET_PART_NUM,  BRIDGE_WIDGET_MFGR_NUM,  pcibr_attach /* &pcibr_fops */},
	{ PIC_WIDGET_PART_NUM_BUS0,  PIC_WIDGET_MFGR_NUM,   pic_attach /* &pic_fops */},
	{ PIC_WIDGET_PART_NUM_BUS1,  PIC_WIDGET_MFGR_NUM,   pic_attach /* &pic_fops */},
	{ XXBOW_WIDGET_PART_NUM,   XXBOW_WIDGET_MFGR_NUM,   xbow_attach /* &xbow_fops */},
	{ XBOW_WIDGET_PART_NUM,    XBOW_WIDGET_MFGR_NUM,    xbow_attach /* &xbow_fops */},
	{ PXBOW_WIDGET_PART_NUM,   XXBOW_WIDGET_MFGR_NUM,   xbow_attach /* &xbow_fops */},
};

/*
 * cdl_add_connpt: We found a device and it's connect point.  Call the 
 * attach routine of that driver.
 *
 * May need support for pciba registration here ...
 *
 * This routine use to create /hw/.id/pci/.../.. that links to 
 * /hw/module/006c06/Pbrick/xtalk/15/pci/<slotnum> .. do we still need 
 * it?  The specified driver attach routine does not reference these 
 * vertices.
 */
int
cdl_add_connpt(int part_num, int mfg_num, 
	       vertex_hdl_t connpt, int drv_flags)
{
	int i;
	
	/*
	 * Find the driver entry point and call the attach routine.
	 */
	for (i = 0; i < MAX_SGI_IO_INFRA_DRVR; i++) {
		if ( (part_num == sgi_infrastructure_drivers[i].part_num) &&
		   ( mfg_num == sgi_infrastructure_drivers[i].mfg_num) ) {
			/*
			 * Call the device attach routines.
			 */
			if (sgi_infrastructure_drivers[i].attach) {
			    return(sgi_infrastructure_drivers[i].attach(connpt));
			}
		} else {
			continue;
		}
	}	

	/* printk("WARNING: cdl_add_connpt: Driver not found for part_num 0x%x mfg_num 0x%x\n", part_num, mfg_num); */

	return (0);
}