patch-2.4.20 linux-2.4.20/drivers/net/e100/e100_proc.c

• Lines: 475
• Date: Thu Nov 28 15:53:13 2002
• Orig file: linux-2.4.19/drivers/net/e100/e100_proc.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -urN linux-2.4.19/drivers/net/e100/e100_proc.c linux-2.4.20/drivers/net/e100/e100_proc.c
@@ -0,0 +1,474 @@
+/*******************************************************************************
+
+  
+  Copyright(c) 1999 - 2002 Intel Corporation. All rights reserved.
+  
+  This program is free software; you can redistribute it and/or modify it 
+  under the terms of the GNU General Public License as published by the Free 
+  Software Foundation; either version 2 of the License, or (at your option) 
+  any later version.
+  
+  This program is distributed in the hope that it will be useful, but WITHOUT 
+  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 
+  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for 
+  more details.
+  
+  You should have received a copy of the GNU General Public License along with
+  this program; if not, write to the Free Software Foundation, Inc., 59 
+  Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+  
+  The full GNU General Public License is included in this distribution in the
+  file called LICENSE.
+  
+  Contact Information:
+  Linux NICS <linux.nics@intel.com>
+  Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+*******************************************************************************/
+
+/**********************************************************************
+*                                                                       *
+* INTEL CORPORATION                                                     *
+*                                                                       *
+* This software is supplied under the terms of the license included     *
+* above.  All use of this driver must be in accordance with the terms   *
+* of that license.                                                      *
+*                                                                       *
+* Module Name:  e100_proc.c                                             *
+*                                                                       *
+* Abstract:     Functions to handle the proc file system.               *
+*               Create the proc directories and files and run read and  *
+*               write requests from the user                            *
+*                                                                       *
+* Environment:  This file is intended to be specific to the Linux       *
+*               operating system.                                       *
+*                                                                       *
+**********************************************************************/
+
+#include <linux/config.h>
+
+#ifdef CONFIG_PROC_FS
+#include "e100.h"
+/* MDI sleep time is at least 50 ms, in jiffies */
+#define MDI_SLEEP_TIME ((HZ / 20) + 1)
+/***************************************************************************/
+/*       /proc File System Interaface Support Functions                    */
+/***************************************************************************/
+
+static struct proc_dir_entry *adapters_proc_dir = 0;
+
+/* externs from e100_main.c */
+extern char e100_short_driver_name[];
+extern char e100_driver_version[];
+extern struct net_device_stats *e100_get_stats(struct net_device *dev);
+extern char *e100_get_brand_msg(struct e100_private *bdp);
+extern int e100_mdi_write(struct e100_private *, u32, u32, u16);
+
+static void e100_proc_cleanup(void);
+static unsigned char e100_init_proc_dir(void);
+
+#define ADAPTERS_PROC_DIR "PRO_LAN_Adapters"
+#define WRITE_BUF_MAX_LEN 20	
+#define READ_BUF_MAX_LEN  256
+#define E100_PE_LEN       25
+
+#define bdp_drv_off(off) (unsigned long)(offsetof(struct e100_private, drv_stats.off))
+#define bdp_prm_off(off) (unsigned long)(offsetof(struct e100_private, params.off))
+
+typedef struct _e100_proc_entry {
+	char *name;
+	read_proc_t *read_proc;
+	write_proc_t *write_proc;
+	unsigned long offset;	/* offset into bdp. ~0 means no value, pass NULL. */
+} e100_proc_entry;
+
+static int
+generic_read(char *page, char **start, off_t off, int count, int *eof, int len)
+{
+	if (len <= off + count)
+		*eof = 1;
+
+	*start = page + off;
+	len -= off;
+	if (len > count)
+		len = count;
+
+	if (len < 0)
+		len = 0;
+
+	return len;
+}
+
+static int
+read_ulong(char *page, char **start, off_t off,
+	   int count, int *eof, unsigned long l)
+{
+	int len;
+
+	len = sprintf(page, "%lu\n", l);
+
+	return generic_read(page, start, off, count, eof, len);
+}
+
+static int
+read_gen_ulong(char *page, char **start, off_t off,
+	       int count, int *eof, void *data)
+{
+	unsigned long val = 0;
+
+	if (data)
+		val = *((unsigned long *) data);
+
+	return read_ulong(page, start, off, count, eof, val);
+}
+
+static int
+read_hwaddr(char *page, char **start, off_t off,
+	    int count, int *eof, unsigned char *hwaddr)
+{
+	int len;
+
+	len = sprintf(page, "%02X:%02X:%02X:%02X:%02X:%02X\n",
+		      hwaddr[0], hwaddr[1], hwaddr[2],
+		      hwaddr[3], hwaddr[4], hwaddr[5]);
+
+	return generic_read(page, start, off, count, eof, len);
+}
+
+static int
+read_descr(char *page, char **start, off_t off, int count, int *eof, void *data)
+{
+	struct e100_private *bdp = data;
+	int len;
+
+	len = sprintf(page, "%s\n", bdp->id_string);
+
+	return generic_read(page, start, off, count, eof, len);
+}
+
+static int
+read_permanent_hwaddr(char *page, char **start, off_t off,
+		      int count, int *eof, void *data)
+{
+	struct e100_private *bdp = data;
+	unsigned char *hwaddr = bdp->perm_node_address;
+
+	return read_hwaddr(page, start, off, count, eof, hwaddr);
+}
+
+static int
+read_part_number(char *page, char **start, off_t off,
+		 int count, int *eof, void *data)
+{
+	struct e100_private *bdp = data;
+	int len;
+
+	len = sprintf(page, "%06lx-%03x\n",
+		      (unsigned long) (bdp->pwa_no >> 8),
+		      (unsigned int) (bdp->pwa_no & 0xFF));
+
+	return generic_read(page, start, off, count, eof, len);
+}
+
+static void
+set_led(struct e100_private *bdp, u16 led_mdi_op)
+{
+	e100_mdi_write(bdp, PHY_82555_LED_SWITCH_CONTROL,
+		       bdp->phy_addr, led_mdi_op);
+
+	set_current_state(TASK_UNINTERRUPTIBLE);
+	schedule_timeout(MDI_SLEEP_TIME);
+
+	/* turn led ownership to the chip */
+	e100_mdi_write(bdp, PHY_82555_LED_SWITCH_CONTROL,
+		       bdp->phy_addr, PHY_82555_LED_NORMAL_CONTROL);
+}
+
+static int
+write_blink_led_timer(struct file *file, const char *buffer,
+		      unsigned long count, void *data)
+{
+	struct e100_private *bdp = data;
+	char s_blink_op[WRITE_BUF_MAX_LEN + 1];
+	char *res;
+	unsigned long i_blink_op;
+
+	if (!buffer)
+		return -EINVAL;
+
+	if (count > WRITE_BUF_MAX_LEN) {
+		count = WRITE_BUF_MAX_LEN;
+	}
+	if (copy_from_user(s_blink_op, buffer, count))
+		return -EFAULT;
+	s_blink_op[count] = '\0';
+	i_blink_op = simple_strtoul(s_blink_op, &res, 0);
+	if (res == s_blink_op) {
+		return -EINVAL;
+	}
+
+	switch (i_blink_op) {
+
+	case LED_OFF:
+		set_led(bdp, PHY_82555_LED_OFF);
+		break;
+	case LED_ON:
+		if (bdp->rev_id >= D101MA_REV_ID)
+			set_led(bdp, PHY_82555_LED_ON_559);
+		else
+			set_led(bdp, PHY_82555_LED_ON_PRE_559);
+
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return count;
+}
+
+static e100_proc_entry e100_proc_list[] = {
+	{"Description",           read_descr,            0, 0},
+	{"Permanent_HWaddr",      read_permanent_hwaddr, 0, 0},
+	{"Part_Number",           read_part_number,      0, 0},
+	{"\n",},
+	{"Rx_TCP_Checksum_Good",  read_gen_ulong, 0, ~0},
+	{"Rx_TCP_Checksum_Bad",   read_gen_ulong, 0, ~0},
+	{"Tx_TCP_Checksum_Good",  read_gen_ulong, 0, ~0},
+	{"Tx_TCP_Checksum_Bad",   read_gen_ulong, 0, ~0},
+	{"\n",},
+	{"Tx_Abort_Late_Coll",    read_gen_ulong, 0, bdp_drv_off(tx_late_col)},
+	{"Tx_Deferred_Ok",        read_gen_ulong, 0, bdp_drv_off(tx_ok_defrd)},
+	{"Tx_Single_Coll_Ok",     read_gen_ulong, 0, bdp_drv_off(tx_one_retry)},
+	{"Tx_Multi_Coll_Ok",      read_gen_ulong, 0, bdp_drv_off(tx_mt_one_retry)},
+	{"Rx_Long_Length_Errors", read_gen_ulong, 0, ~0},
+	{"\n",},
+	{"Tx_Flow_Control_Pause", read_gen_ulong, 0, bdp_drv_off(xmt_fc_pkts)},
+	{"Rx_Flow_Control_Pause", read_gen_ulong, 0, bdp_drv_off(rcv_fc_pkts)},
+	{"Rx_Flow_Control_Unsup", read_gen_ulong, 0, bdp_drv_off(rcv_fc_unsupported)},
+	{"\n",},
+	{"Tx_TCO_Packets",        read_gen_ulong, 0, bdp_drv_off(xmt_tco_pkts)},
+	{"Rx_TCO_Packets",        read_gen_ulong, 0, bdp_drv_off(rcv_tco_pkts)},
+	{"\n",},
+	{"Rx_Interrupt_Packets",  read_gen_ulong, 0, bdp_drv_off(rx_intr_pkts)},
+	{"Identify_Adapter", 0, write_blink_led_timer, 0},
+	{"", 0, 0, 0}
+};
+
+static int
+read_info(char *page, char **start, off_t off, int count, int *eof, void *data)
+{
+	struct e100_private *bdp = data;
+	e100_proc_entry *pe;
+	int tmp;
+	void *val;
+	int len = 0;
+
+	for (pe = e100_proc_list; pe->name[0]; pe++) {
+		if (pe->name[0] == '\n') {
+			len += sprintf(page + len, "\n");
+			continue;
+		}
+
+		if (pe->read_proc) {
+			if ((len + READ_BUF_MAX_LEN + E100_PE_LEN + 1) >=
+			    PAGE_SIZE)
+				break;
+
+			if (pe->offset != ~0)
+				val = ((char *) bdp) + pe->offset;
+			else
+				val = NULL;
+
+			len += sprintf(page + len, "%-"
+				       __MODULE_STRING(E100_PE_LEN)
+				       "s ", pe->name);
+			len += pe->read_proc(page + len, start, 0,
+					     READ_BUF_MAX_LEN + 1, &tmp, val);
+		}
+	}
+
+	return generic_read(page, start, off, count, eof, len);
+}
+
+static struct proc_dir_entry *
+create_proc_rw(char *name, void *data, struct proc_dir_entry *parent,
+	       read_proc_t * read_proc, write_proc_t * write_proc)
+{
+	struct proc_dir_entry *pdep;
+	mode_t mode = S_IFREG;
+
+	if (write_proc) {
+		mode |= S_IWUSR;
+		if (read_proc) {
+			mode |= S_IRUSR;
+		}
+
+	} else if (read_proc) {
+		mode |= S_IRUGO;
+	}
+
+	if (!(pdep = create_proc_entry(name, mode, parent)))
+		return NULL;
+
+	pdep->read_proc = read_proc;
+	pdep->write_proc = write_proc;
+	pdep->data = data;
+	return pdep;
+}
+
+void
+e100_remove_proc_subdir(struct e100_private *bdp, char *name)
+{
+	e100_proc_entry *pe;
+	char info[256];
+	int len;
+
+	/* If our root /proc dir was not created, there is nothing to remove */
+	if (adapters_proc_dir == NULL) {
+		return;
+	}
+
+	len = strlen(bdp->ifname);
+	strncpy(info, bdp->ifname, sizeof (info));
+	strncat(info + len, ".info", sizeof (info) - len);
+
+	if (bdp->proc_parent) {
+		for (pe = e100_proc_list; pe->name[0]; pe++) {
+			if (pe->name[0] == '\n')
+				continue;
+
+			remove_proc_entry(pe->name, bdp->proc_parent);
+		}
+
+		remove_proc_entry(bdp->ifname, adapters_proc_dir);
+		bdp->proc_parent = NULL;
+	}
+
+	remove_proc_entry(info, adapters_proc_dir);
+
+	/* try to remove the main /proc dir, if it's empty */
+	e100_proc_cleanup();
+}
+
+int
+e100_create_proc_subdir(struct e100_private *bdp)
+{
+	struct proc_dir_entry *dev_dir;
+	e100_proc_entry *pe;
+	char info[256];
+	int len;
+	void *data;
+
+	/* create the main /proc dir if needed */
+	if (!adapters_proc_dir) {
+		if (!e100_init_proc_dir())
+			return -ENOMEM;
+	}
+
+	strncpy(info, bdp->ifname, sizeof (info));
+	len = strlen(info);
+	strncat(info + len, ".info", sizeof (info) - len);
+
+	/* info */
+	if (!(create_proc_rw(info, bdp, adapters_proc_dir, read_info, 0))) {
+		e100_proc_cleanup();
+		return -ENOMEM;
+	}
+
+	dev_dir = create_proc_entry(bdp->ifname, S_IFDIR,
+				    adapters_proc_dir);
+	bdp->proc_parent = dev_dir;
+
+	if (!dev_dir) {
+		e100_remove_proc_subdir(bdp, bdp->ifname);
+		return -ENOMEM;
+	}
+
+	for (pe = e100_proc_list; pe->name[0]; pe++) {
+		if (pe->name[0] == '\n')
+			continue;
+
+		if (pe->offset != ~0)
+			data = ((char *) bdp) + pe->offset;
+		else
+			data = NULL;
+
+		if (!(create_proc_rw(pe->name, data, dev_dir,
+				     pe->read_proc, pe->write_proc))) {
+			e100_remove_proc_subdir(bdp, bdp->ifname);
+			return -ENOMEM;
+		}
+	}
+
+	return 0;
+}
+
+/****************************************************************************
+ * Name:          e100_init_proc_dir
+ *
+ * Description:   This routine creates the top-level /proc directory for the
+ *                driver in /proc/net
+ *
+ * Arguments:     none
+ *
+ * Returns:       true on success, false on fail
+ *
+ ***************************************************************************/
+static unsigned char
+e100_init_proc_dir(void)
+{
+	int len;
+
+	/* first check if adapters_proc_dir already exists */
+	len = strlen(ADAPTERS_PROC_DIR);
+	for (adapters_proc_dir = proc_net->subdir;
+	     adapters_proc_dir; adapters_proc_dir = adapters_proc_dir->next) {
+
+		if ((adapters_proc_dir->namelen == len) &&
+		    (!memcmp(adapters_proc_dir->name, ADAPTERS_PROC_DIR, len)))
+			break;
+	}
+
+	if (!adapters_proc_dir)
+		adapters_proc_dir =
+			create_proc_entry(ADAPTERS_PROC_DIR, S_IFDIR, proc_net);
+
+	if (!adapters_proc_dir)
+		return false;
+
+	return true;
+}
+
+/****************************************************************************
+ * Name:          e100_proc_cleanup
+ *
+ * Description:   This routine clears the top-level /proc directory, if empty.
+ *
+ * Arguments:     none
+ *
+ * Returns:       none
+ *
+ ***************************************************************************/
+static void
+e100_proc_cleanup(void)
+{
+	struct proc_dir_entry *de;
+
+	if (adapters_proc_dir == NULL) {
+		return;
+	}
+
+	/* check if subdir list is empty before removing adapters_proc_dir */
+	for (de = adapters_proc_dir->subdir; de; de = de->next) {
+		/* ignore . and .. */
+		if (*(de->name) != '.')
+			break;
+	}
+
+	if (de)
+		return;
+
+	remove_proc_entry(ADAPTERS_PROC_DIR, proc_net);
+	adapters_proc_dir = NULL;
+}
+
+#endif /* CONFIG_PROC_FS */