patch-2.4.22 linux-2.4.22/arch/ia64/sn/io/ifconfig_bus.c

• Lines: 346
• Date: 1969-12-31 16:00:00.000000000 -0800
• Orig file: linux-2.4.21/arch/ia64/sn/io/ifconfig_bus.c
• Orig date: 2003-06-13 07:51:30.000000000 -0700

diff -urN linux-2.4.21/arch/ia64/sn/io/ifconfig_bus.c linux-2.4.22/arch/ia64/sn/io/ifconfig_bus.c
@@ -1,345 +0,0 @@
-/* $Id$
- *
- * 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.
- *
- *  ifconfig_bus - SGI's Persistent PCI Bus Numbering.
- *
- * Copyright (C) 1992-1997, 2000-2002 Silicon Graphics, Inc.  All rights reserved.
- */
-
-#include <linux/types.h>
-#include <linux/slab.h>
-#include <linux/ctype.h>
-#include <linux/module.h>
-#include <linux/init.h>
-
-#include <linux/pci.h>
-
-#include <asm/sn/sgi.h>
-#include <linux/devfs_fs.h>
-#include <linux/devfs_fs_kernel.h>
-#include <asm/io.h>
-#include <asm/sn/iograph.h>
-#include <asm/sn/invent.h>
-#include <asm/sn/hcl.h>
-#include <asm/sn/labelcl.h>
-#include <asm//sn/sn_sal.h>
-#include <asm/sn/addrs.h>
-
-#define SGI_IFCONFIG_BUS "SGI-PERSISTENT PCI BUS NUMBERING"
-#define SGI_IFCONFIG_BUS_VERSION "1.0"
-
-/*
- * Some Global definitions.
- */
-devfs_handle_t ioconfig_bus_handle = NULL;
-unsigned long ioconfig_bus_debug = 0;
-
-#define IFCONFIG_BUS_DEBUG 1
-#ifdef IFCONFIG_BUS_DEBUG
-#define DBG(x...)	printk(x)
-#else
-#define DBG(x...)
-#endif
-
-u64 ioconfig_file = 0;
-u64 ioconfig_file_size = 0;
-
-
-/*
- * PCI Bus Name for PCI
- * 		 module/001c02/Ibrick/xtalk/14/pci - only 1 bus per widget
- *
- * PCI Bus Name for PCI-X
- *		 module/001c02/Ibrick/xtalk/14/pci-x/0 - PCI bus 0 on Widget 14
- *		 module/001c02/Ibrick/xtalk/14/pci-x/1 - PCI bus 1 on Widget 14
- */
-
-struct	pcipath_to_busnum{
-	unsigned int  num;			/* persistent bus number */
-	unsigned int  len;			/* pci path length */
-	unsigned char	path[120];		/* pci path name */
-};
-
-struct  pcipath_to_busnum *ioconfig_bus_table;
-u64 ioconfig_bus_table_size = 0;
-
-
-struct pcipath_to_busnum pcibus_names[256];
-
-/*
- * highest_pcibus_num : The highest PCI bus number allocated.  Use for next 
- *			PCI Bus Number to be assigned.
- * pcibus_names_index : The starting entry of any new configuration.  It also 
- *			tracks the number of old config in the table.
- * current_index : Next free index in the table for new config.
- *		   current_index - pcibus_names_index = number new config.
- */
-
-int	highest_pcibus_num = 0;
-int	pcibus_names_index = 0; /* Start of new config */
-int	current_index = 0; /* Next entry for new config */
-
-/*
- * ioconfig_get_busnum():
- *	ioconfig_get_busnum() returns the bus number given a pci path name.
- *	If the pci path name exist in the persistent naming table, the
- *	corresponding bun number is returned.  If the pci path name does not
- *	exist, the next bus number is assigned to that path, added to the
- *	persistent naming table and the new bus num returned.
- */
-void
-ioconfig_get_busnum(char *pci_path, int *bus_num)
-{
-	struct	pcipath_to_busnum *temp;
-	int index;
-
-	*bus_num = -1;
-	temp = ioconfig_bus_table;
-	for (index = 0; index < current_index; ioconfig_bus_table++, index++) {
-		if ( (strncmp(pci_path, ioconfig_bus_table->path, strlen(pci_path) == 0)) ){
-			*bus_num = ioconfig_bus_table->num;
-			return;
-		}
-	}
-
-	/*
-	 * This is a new path and it is not in the config table.
-	 * Add it to the end.
-	 */
-	*bus_num = highest_pcibus_num;
-	highest_pcibus_num++;
-	ioconfig_bus_table->num = *bus_num;
-	strcpy((char *)&(ioconfig_bus_table->path), pci_path);
-	ioconfig_bus_table->len = strlen(pci_path);
-	current_index++;
-
-}
-
-void
-dump_ioconfig_table(struct pcipath_to_busnum *ioconfig_bus_table)
-{
-
-	int index = 0;
-	struct pcipath_to_busnum *temp;
-
-	temp = ioconfig_bus_table;
-	while (index < pcibus_names_index) {
-		printk("Bus Number %d PCI path %s\n", temp->num, temp->path);
-		temp++;
-		index++;
-	}
-		
-}
-/*
- * nextline
- *	This routine returns the nextline in the buffer.
- */
-int nextline(char *buffer, char **next, char *line)
-{
-
-	char *temp;
-
-	if (buffer[0] == 0x0) {
-		return(0);
-	}
-
-	temp = buffer;
-	while (*temp != 0) {
-		*line = *temp;
-		if (*temp != '\n'){
-			*line = *temp;
-			temp++; line++;
-		} else
-			break;
-	}
-
-	if (*temp == 0)
-		*next = temp;
-	else
-		*next = ++temp;
-
-	return(1);
-}
-
-/*
- * build_pcibus_name
- *	This routine parses the ioconfig contents read into
- *	memory by ioconfig command in EFI and builds the
- *	persistent pci bus naming table.
- */
-void
-build_pcibus_name(char *file_contents, struct pcipath_to_busnum *table)
-{
-	/*
-	 * Read the whole file into memory.
-	 */
-	int busnum;
-	int rc;
-	char *name;
-	char *temp;
-	char *next;
-	char *current;
-	char *line;
-	struct pcipath_to_busnum *pcibus;
-
-	line = kmalloc(256, GFP_KERNEL);
-	memset(line, 0,256);
-	name = kmalloc(125, GFP_KERNEL);
-	memset(name, 0, 125);
-	pcibus = table;
-	current = file_contents;
-	while (nextline(current, &next, line)){
-printk("current 0x%lx next 0x%lx\n", current, next);
-		temp = line;
-		/*
-		 * Skip all leading Blank lines ..
-		 */
-		while (isspace(*temp))
-			if (*temp != '\n')
-				temp++;
-			else
-				break;
-
-		if (*temp == '\n') {
-			current = next;
-			memset(line, 0, 256);
-			continue;
-		}
- 
-		/*
-		 * Skip comment lines
-		 */
-		if (*temp == '#') {
-			current = next;
-			memset(line, 0, 256);
-			continue;
-		}
-
-		/*
-		 * Get the next free entry in the table.
-		 */
-		rc = sscanf(temp, "%d %s", &busnum, name);
-		pcibus->num = busnum;
-		pcibus->len = strlen(name);
-		strcpy(&pcibus->path[0], name);
-		DBG("pci number = %d pci path = %s\n", pcibus->num, pcibus->path);
-		if (busnum > highest_pcibus_num)
-			highest_pcibus_num = busnum;
-		else 
-			highest_pcibus_num = busnum; 
- 
-		pcibus_names_index++;
-		pcibus++;
-		current = next;
-		memset(line, 0, 256);
-	}
-
-	DBG("highest_pcibus_num %d pcibus_names_index %d\n", highest_pcibus_num, pcibus_names_index);
-
-	current_index = pcibus_names_index;
-	kfree(line);
-	kfree(name);
-
-	return;
-}
-
-void
-ioconfig_bus_init(void)
-{
-
-	struct ia64_sal_retval ret_stuff;
-
-	DBG("ioconfig_bus_init called.\n");
-
-	/*
-	 * Make SAL call to get the address of the bus configuration table.
-	 */
-	ret_stuff.status = (uint64_t)0;
-	ret_stuff.v0 = (uint64_t)0;
-	ret_stuff.v1 = (uint64_t)0;
-	ret_stuff.v2 = (uint64_t)0;
-	SAL_CALL(ret_stuff, SN_SAL_BUS_CONFIG, 0, get_nasid(), 0, 0, 0, 0, 0);
-	if (ret_stuff.status != 0) {
-		DBG("ifconfig_bus_init: No Address given\n");
-	}
-
-	ioconfig_file = ret_stuff.v0;
-	ioconfig_file_size = ret_stuff.v1;
-	DBG("ioconfig_bus_init: ioconfig_file %p %d\n", 
-		(void *)ioconfig_file, (int)ioconfig_file_size);
-
-	/*
-	 * Convert the address to a Cache Address.
-	 */
-	ioconfig_file = (CACHEABLE_MEM_SPACE | 
-		(ioconfig_file & TO_PHYS_MASK));
-
-	ioconfig_bus_table = kmalloc( 512*sizeof(struct pcipath_to_busnum), 
-				GFP_KERNEL );
-
-	DBG("ioconfig_bus_init: Kernel virtual ioconfig_file %p ioconfig_bus_table %p\n", 
-		(void *)ioconfig_file, (void *)ioconfig_bus_table);
-
-	(void) build_pcibus_name((char *)ioconfig_file, ioconfig_bus_table);
-
-	(void) dump_ioconfig_table(ioconfig_bus_table);
-
-}
-
-/*
- * ioconfig_bus_open - Opens the special device node "/dev/hw/.ioconfig_bus".
- */
-static int ioconfig_bus_open(struct inode * inode, struct file * filp)
-{
-	if (ioconfig_bus_debug) {
-        	printk("ioconfig_bus_open called.\n");
-	}
-
-        return(0);
-
-}
-
-/*
- * ioconfig_bus_close - Closes the special device node "/dev/hw/.ioconfig_bus".
- */
-static int ioconfig_bus_close(struct inode * inode, struct file * filp)
-{
-
-	if (ioconfig_bus_debug) {
-        	printk("ioconfig_bus_close called.\n");
-	}
-
-        return(0);
-}
-
-struct file_operations ioconfig_bus_fops = {
-	/* ioctl:ioconfig_bus_ioctl, ioctl */
-	open:ioconfig_bus_open,		/* open */
-	release:ioconfig_bus_close	/* release */
-};
-
-
-/*
- * init_ifconfig_net() - Boot time initialization.  Ensure that it is called 
- *	after devfs has been initialized.
- *
- */
-int init_ioconfig_bus(void)
-{
-	ioconfig_bus_handle = NULL;
-	ioconfig_bus_handle = hwgraph_register(hwgraph_root, ".ioconfig_bus",
-			0, DEVFS_FL_AUTO_DEVNUM,
-			0, 0,
-			S_IFCHR | S_IRUSR | S_IWUSR | S_IRGRP, 0, 0,
-			&ioconfig_bus_fops, NULL);
-
-	if (ioconfig_bus_handle == NULL) {
-		panic("Unable to create SGI PERSISTENT BUS NUMBERING Driver.\n");
-	}
-
-	return(0);
-
-}