1 files changed, 453 insertions, 0 deletions

diff --git a/drivers/net/wireless/iwmc3200wifi/debugfs.c b/drivers/net/wireless/iwmc3200wifi/debugfs.c
new file mode 100644
index 00000000000..0fa7b9150d5
--- /dev/null
+++ b/drivers/net/wireless/iwmc3200wifi/debugfs.c
@@ -0,0 +1,453 @@
+/*
+ * Intel Wireless Multicomm 3200 WiFi driver
+ *
+ * Copyright (C) 2009 Intel Corporation <ilw@linux.intel.com>
+ * Samuel Ortiz <samuel.ortiz@intel.com>
+ * Zhu Yi <yi.zhu@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * 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., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/bitops.h>
+#include <linux/debugfs.h>
+
+#include "iwm.h"
+#include "bus.h"
+#include "rx.h"
+#include "debug.h"
+
+static struct {
+	u8 id;
+	char *name;
+} iwm_debug_module[__IWM_DM_NR] = {
+	 {IWM_DM_BOOT, "boot"},
+	 {IWM_DM_FW,   "fw"},
+	 {IWM_DM_SDIO, "sdio"},
+	 {IWM_DM_NTF,  "ntf"},
+	 {IWM_DM_RX,   "rx"},
+	 {IWM_DM_TX,   "tx"},
+	 {IWM_DM_MLME, "mlme"},
+	 {IWM_DM_CMD,  "cmd"},
+	 {IWM_DM_WEXT,  "wext"},
+};
+
+#define add_dbg_module(dbg, name, id, initlevel) 	\
+do {							\
+	struct dentry *d;				\
+	dbg.dbg_module[id] = (initlevel);		\
+	d = debugfs_create_x8(name, 0600, dbg.dbgdir,	\
+			     &(dbg.dbg_module[id]));	\
+	if (!IS_ERR(d))					\
+		dbg.dbg_module_dentries[id] = d;        \
+} while (0)
+
+static int iwm_debugfs_u32_read(void *data, u64 *val)
+{
+	struct iwm_priv *iwm = data;
+
+	*val = iwm->dbg.dbg_level;
+	return 0;
+}
+
+static int iwm_debugfs_dbg_level_write(void *data, u64 val)
+{
+	struct iwm_priv *iwm = data;
+	int i;
+
+	iwm->dbg.dbg_level = val;
+
+	for (i = 0; i < __IWM_DM_NR; i++)
+		iwm->dbg.dbg_module[i] = val;
+
+	return 0;
+}
+DEFINE_SIMPLE_ATTRIBUTE(fops_iwm_dbg_level,
+			iwm_debugfs_u32_read, iwm_debugfs_dbg_level_write,
+			"%llu\n");
+
+static int iwm_debugfs_dbg_modules_write(void *data, u64 val)
+{
+	struct iwm_priv *iwm = data;
+	int i, bit;
+
+	iwm->dbg.dbg_modules = val;
+
+	for (i = 0; i < __IWM_DM_NR; i++)
+		iwm->dbg.dbg_module[i] = 0;
+
+	for_each_bit(bit, &iwm->dbg.dbg_modules, __IWM_DM_NR)
+		iwm->dbg.dbg_module[bit] = iwm->dbg.dbg_level;
+
+	return 0;
+}
+DEFINE_SIMPLE_ATTRIBUTE(fops_iwm_dbg_modules,
+			iwm_debugfs_u32_read, iwm_debugfs_dbg_modules_write,
+			"%llu\n");
+
+static int iwm_txrx_open(struct inode *inode, struct file *filp)
+{
+	filp->private_data = inode->i_private;
+	return 0;
+}
+
+
+static ssize_t iwm_debugfs_txq_read(struct file *filp, char __user *buffer,
+				   size_t count, loff_t *ppos)
+{
+	struct iwm_priv *iwm = filp->private_data;
+	char *buf;
+	int i, buf_len = 4096;
+	size_t len = 0;
+	ssize_t ret;
+
+	if (*ppos != 0)
+		return 0;
+	if (count < sizeof(buf))
+		return -ENOSPC;
+
+	buf = kzalloc(buf_len, GFP_KERNEL);
+	if (!buf)
+		return -ENOMEM;
+
+	for (i = 0; i < IWM_TX_QUEUES; i++) {
+		struct iwm_tx_queue *txq = &iwm->txq[i];
+		struct sk_buff *skb;
+		int j;
+		unsigned long flags;
+
+		spin_lock_irqsave(&txq->queue.lock, flags);
+
+		skb = (struct sk_buff *)&txq->queue;
+
+		len += snprintf(buf + len, buf_len - len, "TXQ #%d\n", i);
+		len += snprintf(buf + len, buf_len - len, "\tStopped:     %d\n",
+				__netif_subqueue_stopped(iwm_to_ndev(iwm),
+							 txq->id));
+		len += snprintf(buf + len, buf_len - len, "\tConcat count:%d\n",
+				txq->concat_count);
+		len += snprintf(buf + len, buf_len - len, "\tQueue len:   %d\n",
+				skb_queue_len(&txq->queue));
+		for (j = 0; j < skb_queue_len(&txq->queue); j++) {
+			struct iwm_tx_info *tx_info;
+
+			skb = skb->next;
+			tx_info = skb_to_tx_info(skb);
+
+			len += snprintf(buf + len, buf_len - len,
+					"\tSKB #%d\n", j);
+			len += snprintf(buf + len, buf_len - len,
+					"\t\tsta:   %d\n", tx_info->sta);
+			len += snprintf(buf + len, buf_len - len,
+					"\t\tcolor: %d\n", tx_info->color);
+			len += snprintf(buf + len, buf_len - len,
+					"\t\ttid:   %d\n", tx_info->tid);
+		}
+
+		spin_unlock_irqrestore(&txq->queue.lock, flags);
+	}
+
+	ret = simple_read_from_buffer(buffer, len, ppos, buf, buf_len);
+	kfree(buf);
+
+	return ret;
+}
+
+static ssize_t iwm_debugfs_tx_credit_read(struct file *filp,
+					  char __user *buffer,
+					  size_t count, loff_t *ppos)
+{
+	struct iwm_priv *iwm = filp->private_data;
+	struct iwm_tx_credit *credit = &iwm->tx_credit;
+	char *buf;
+	int i, buf_len = 4096;
+	size_t len = 0;
+	ssize_t ret;
+
+	if (*ppos != 0)
+		return 0;
+	if (count < sizeof(buf))
+		return -ENOSPC;
+
+	buf = kzalloc(buf_len, GFP_KERNEL);
+	if (!buf)
+		return -ENOMEM;
+
+	len += snprintf(buf + len, buf_len - len,
+			"NR pools:  %d\n", credit->pool_nr);
+	len += snprintf(buf + len, buf_len - len,
+			"pools map: 0x%lx\n", credit->full_pools_map);
+
+	len += snprintf(buf + len, buf_len - len, "\n### POOLS ###\n");
+	for (i = 0; i < IWM_MACS_OUT_GROUPS; i++) {
+		len += snprintf(buf + len, buf_len - len,
+				"pools entry #%d\n", i);
+		len += snprintf(buf + len, buf_len - len,
+				"\tid:          %d\n",
+				credit->pools[i].id);
+		len += snprintf(buf + len, buf_len - len,
+				"\tsid:         %d\n",
+				credit->pools[i].sid);
+		len += snprintf(buf + len, buf_len - len,
+				"\tmin_pages:   %d\n",
+				credit->pools[i].min_pages);
+		len += snprintf(buf + len, buf_len - len,
+				"\tmax_pages:   %d\n",
+				credit->pools[i].max_pages);
+		len += snprintf(buf + len, buf_len - len,
+				"\talloc_pages: %d\n",
+				credit->pools[i].alloc_pages);
+		len += snprintf(buf + len, buf_len - len,
+				"\tfreed_pages: %d\n",
+				credit->pools[i].total_freed_pages);
+	}
+
+	len += snprintf(buf + len, buf_len - len, "\n### SPOOLS ###\n");
+	for (i = 0; i < IWM_MACS_OUT_SGROUPS; i++) {
+		len += snprintf(buf + len, buf_len - len,
+				"spools entry #%d\n", i);
+		len += snprintf(buf + len, buf_len - len,
+				"\tid:          %d\n",
+				credit->spools[i].id);
+		len += snprintf(buf + len, buf_len - len,
+				"\tmax_pages:   %d\n",
+				credit->spools[i].max_pages);
+		len += snprintf(buf + len, buf_len - len,
+				"\talloc_pages: %d\n",
+				credit->spools[i].alloc_pages);
+
+	}
+
+	ret = simple_read_from_buffer(buffer, len, ppos, buf, buf_len);
+	kfree(buf);
+
+	return ret;
+}
+
+static ssize_t iwm_debugfs_rx_ticket_read(struct file *filp,
+					  char __user *buffer,
+					  size_t count, loff_t *ppos)
+{
+	struct iwm_priv *iwm = filp->private_data;
+	struct iwm_rx_ticket_node *ticket, *next;
+	char *buf;
+	int buf_len = 4096, i;
+	size_t len = 0;
+	ssize_t ret;
+
+	if (*ppos != 0)
+		return 0;
+	if (count < sizeof(buf))
+		return -ENOSPC;
+
+	buf = kzalloc(buf_len, GFP_KERNEL);
+	if (!buf)
+		return -ENOMEM;
+
+	list_for_each_entry_safe(ticket, next, &iwm->rx_tickets, node) {
+		len += snprintf(buf + len, buf_len - len, "Ticket #%d\n",
+				ticket->ticket->id);
+		len += snprintf(buf + len, buf_len - len, "\taction: 0x%x\n",
+				ticket->ticket->action);
+		len += snprintf(buf + len, buf_len - len, "\tflags:  0x%x\n",
+				ticket->ticket->flags);
+	}
+
+	for (i = 0; i < IWM_RX_ID_HASH; i++) {
+		struct iwm_rx_packet *packet, *nxt;
+		struct list_head *pkt_list = &iwm->rx_packets[i];
+		if (!list_empty(pkt_list)) {
+			len += snprintf(buf + len, buf_len - len,
+					"Packet hash #%d\n", i);
+			list_for_each_entry_safe(packet, nxt, pkt_list, node) {
+				len += snprintf(buf + len, buf_len - len,
+						"\tPacket id:     %d\n",
+						packet->id);
+				len += snprintf(buf + len, buf_len - len,
+						"\tPacket length: %lu\n",
+						packet->pkt_size);
+			}
+		}
+	}
+
+	ret = simple_read_from_buffer(buffer, len, ppos, buf, buf_len);
+	kfree(buf);
+
+	return ret;
+}
+
+
+static const struct file_operations iwm_debugfs_txq_fops = {
+	.owner =	THIS_MODULE,
+	.open =		iwm_txrx_open,
+	.read =		iwm_debugfs_txq_read,
+};
+
+static const struct file_operations iwm_debugfs_tx_credit_fops = {
+	.owner =	THIS_MODULE,
+	.open =		iwm_txrx_open,
+	.read =		iwm_debugfs_tx_credit_read,
+};
+
+static const struct file_operations iwm_debugfs_rx_ticket_fops = {
+	.owner =	THIS_MODULE,
+	.open =		iwm_txrx_open,
+	.read =		iwm_debugfs_rx_ticket_read,
+};
+
+int iwm_debugfs_init(struct iwm_priv *iwm)
+{
+	int i, result;
+	char devdir[16];
+
+	iwm->dbg.rootdir = debugfs_create_dir(KBUILD_MODNAME, NULL);
+	result = PTR_ERR(iwm->dbg.rootdir);
+	if (!result || IS_ERR(iwm->dbg.rootdir)) {
+		if (result == -ENODEV) {
+			IWM_ERR(iwm, "DebugFS (CONFIG_DEBUG_FS) not "
+				"enabled in kernel config\n");
+			result = 0;	/* No debugfs support */
+		}
+		IWM_ERR(iwm, "Couldn't create rootdir: %d\n", result);
+		goto error;
+	}
+
+	snprintf(devdir, sizeof(devdir), "%s", wiphy_name(iwm_to_wiphy(iwm)));
+
+	iwm->dbg.devdir = debugfs_create_dir(devdir, iwm->dbg.rootdir);
+	result = PTR_ERR(iwm->dbg.devdir);
+	if (IS_ERR(iwm->dbg.devdir) && (result != -ENODEV)) {
+		IWM_ERR(iwm, "Couldn't create devdir: %d\n", result);
+		goto error;
+	}
+
+	iwm->dbg.dbgdir = debugfs_create_dir("debug", iwm->dbg.devdir);
+	result = PTR_ERR(iwm->dbg.dbgdir);
+	if (IS_ERR(iwm->dbg.dbgdir) && (result != -ENODEV)) {
+		IWM_ERR(iwm, "Couldn't create dbgdir: %d\n", result);
+		goto error;
+	}
+
+	iwm->dbg.rxdir = debugfs_create_dir("rx", iwm->dbg.devdir);
+	result = PTR_ERR(iwm->dbg.rxdir);
+	if (IS_ERR(iwm->dbg.rxdir) && (result != -ENODEV)) {
+		IWM_ERR(iwm, "Couldn't create rx dir: %d\n", result);
+		goto error;
+	}
+
+	iwm->dbg.txdir = debugfs_create_dir("tx", iwm->dbg.devdir);
+	result = PTR_ERR(iwm->dbg.txdir);
+	if (IS_ERR(iwm->dbg.txdir) && (result != -ENODEV)) {
+		IWM_ERR(iwm, "Couldn't create tx dir: %d\n", result);
+		goto error;
+	}
+
+	iwm->dbg.busdir = debugfs_create_dir("bus", iwm->dbg.devdir);
+	result = PTR_ERR(iwm->dbg.busdir);
+	if (IS_ERR(iwm->dbg.busdir) && (result != -ENODEV)) {
+		IWM_ERR(iwm, "Couldn't create bus dir: %d\n", result);
+		goto error;
+	}
+
+	if (iwm->bus_ops->debugfs_init) {
+		result = iwm->bus_ops->debugfs_init(iwm, iwm->dbg.busdir);
+		if (result < 0) {
+			IWM_ERR(iwm, "Couldn't create bus entry: %d\n", result);
+			goto error;
+		}
+	}
+
+
+	iwm->dbg.dbg_level = IWM_DL_NONE;
+	iwm->dbg.dbg_level_dentry =
+		debugfs_create_file("level", 0200, iwm->dbg.dbgdir, iwm,
+				    &fops_iwm_dbg_level);
+	result = PTR_ERR(iwm->dbg.dbg_level_dentry);
+	if (IS_ERR(iwm->dbg.dbg_level_dentry) && (result != -ENODEV)) {
+		IWM_ERR(iwm, "Couldn't create dbg_level: %d\n", result);
+		goto error;
+	}
+
+
+	iwm->dbg.dbg_modules = IWM_DM_DEFAULT;
+	iwm->dbg.dbg_modules_dentry =
+		debugfs_create_file("modules", 0200, iwm->dbg.dbgdir, iwm,
+				    &fops_iwm_dbg_modules);
+	result = PTR_ERR(iwm->dbg.dbg_modules_dentry);
+	if (IS_ERR(iwm->dbg.dbg_modules_dentry) && (result != -ENODEV)) {
+		IWM_ERR(iwm, "Couldn't create dbg_modules: %d\n", result);
+		goto error;
+	}
+
+	for (i = 0; i < __IWM_DM_NR; i++)
+		add_dbg_module(iwm->dbg, iwm_debug_module[i].name,
+			       iwm_debug_module[i].id, IWM_DL_DEFAULT);
+
+	iwm->dbg.txq_dentry = debugfs_create_file("queues", 0200,
+						  iwm->dbg.txdir, iwm,
+						  &iwm_debugfs_txq_fops);
+	result = PTR_ERR(iwm->dbg.txq_dentry);
+	if (IS_ERR(iwm->dbg.txq_dentry) && (result != -ENODEV)) {
+		IWM_ERR(iwm, "Couldn't create tx queue: %d\n", result);
+		goto error;
+	}
+
+	iwm->dbg.tx_credit_dentry = debugfs_create_file("credits", 0200,
+						   iwm->dbg.txdir, iwm,
+						   &iwm_debugfs_tx_credit_fops);
+	result = PTR_ERR(iwm->dbg.tx_credit_dentry);
+	if (IS_ERR(iwm->dbg.tx_credit_dentry) && (result != -ENODEV)) {
+		IWM_ERR(iwm, "Couldn't create tx credit: %d\n", result);
+		goto error;
+	}
+
+	iwm->dbg.rx_ticket_dentry = debugfs_create_file("tickets", 0200,
+						  iwm->dbg.rxdir, iwm,
+						  &iwm_debugfs_rx_ticket_fops);
+	result = PTR_ERR(iwm->dbg.rx_ticket_dentry);
+	if (IS_ERR(iwm->dbg.rx_ticket_dentry) && (result != -ENODEV)) {
+		IWM_ERR(iwm, "Couldn't create rx ticket: %d\n", result);
+		goto error;
+	}
+
+	return 0;
+
+ error:
+	return result;
+}
+
+void iwm_debugfs_exit(struct iwm_priv *iwm)
+{
+	int i;
+
+	for (i = 0; i < __IWM_DM_NR; i++)
+		debugfs_remove(iwm->dbg.dbg_module_dentries[i]);
+
+	debugfs_remove(iwm->dbg.dbg_modules_dentry);
+	debugfs_remove(iwm->dbg.dbg_level_dentry);
+	debugfs_remove(iwm->dbg.txq_dentry);
+	debugfs_remove(iwm->dbg.tx_credit_dentry);
+	debugfs_remove(iwm->dbg.rx_ticket_dentry);
+	if (iwm->bus_ops->debugfs_exit)
+		iwm->bus_ops->debugfs_exit(iwm);
+
+	debugfs_remove(iwm->dbg.busdir);
+	debugfs_remove(iwm->dbg.dbgdir);
+	debugfs_remove(iwm->dbg.txdir);
+	debugfs_remove(iwm->dbg.rxdir);
+	debugfs_remove(iwm->dbg.devdir);
+	debugfs_remove(iwm->dbg.rootdir);
+}