New: mac80211-based bcm43xx driver from the wireless-dev tree

SVN-Revision: 7693

1 files changed, 433 insertions, 0 deletions

diff --git a/package/bcm43xx-mac80211/src/bcm43xx/bcm43xx_debugfs.c b/package/bcm43xx-mac80211/src/bcm43xx/bcm43xx_debugfs.c
new file mode 100644
index 0000000000..b24bf63c92
--- /dev/null
+++ b/package/bcm43xx-mac80211/src/bcm43xx/bcm43xx_debugfs.c
@@ -0,0 +1,433 @@
+/*
+
+  Broadcom BCM43xx wireless driver
+
+  debugfs driver debugging code
+
+  Copyright (c) 2005 Michael Buesch <mb@bu3sch.de>
+
+  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; see the file COPYING.  If not, write to
+  the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
+  Boston, MA 02110-1301, USA.
+
+*/
+
+
+
+#include <linux/fs.h>
+#include <linux/debugfs.h>
+#include <linux/slab.h>
+#include <linux/netdevice.h>
+#include <linux/pci.h>
+#include <linux/mutex.h>
+
+#include "bcm43xx.h"
+#include "bcm43xx_main.h"
+#include "bcm43xx_debugfs.h"
+#include "bcm43xx_dma.h"
+#include "bcm43xx_pio.h"
+#include "bcm43xx_xmit.h"
+
+#define REALLY_BIG_BUFFER_SIZE	(1024*256)
+
+static struct bcm43xx_debugfs fs;
+static char big_buffer[1024*256];
+static DEFINE_MUTEX(big_buffer_mutex);
+
+
+static ssize_t write_file_dummy(struct file *file, const char __user *buf,
+				size_t count, loff_t *ppos)
+{
+	return count;
+}
+
+static int open_file_generic(struct inode *inode, struct file *file)
+{
+	file->private_data = inode->i_private;
+	return 0;
+}
+
+#define fappend(fmt, x...)	pos += snprintf(buf + pos, len - pos, fmt , ##x)
+
+static ssize_t drvinfo_read_file(struct file *file, char __user *userbuf,
+				 size_t count, loff_t *ppos)
+{
+	const size_t len = ARRAY_SIZE(big_buffer);
+	char *buf = big_buffer;
+	size_t pos = 0;
+	ssize_t res;
+
+	mutex_lock(&big_buffer_mutex);
+	/* This is where the information is written to the "driver" file */
+	fappend(KBUILD_MODNAME " driver\n");
+	fappend("Compiled at: %s %s\n", __DATE__, __TIME__);
+	res = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
+	mutex_unlock(&big_buffer_mutex);
+
+	return res;
+}
+
+static ssize_t tsf_read_file(struct file *file, char __user *userbuf,
+			     size_t count, loff_t *ppos)
+{
+	struct bcm43xx_wldev *dev = file->private_data;
+	const size_t len = ARRAY_SIZE(big_buffer);
+	char *buf = big_buffer;
+	size_t pos = 0;
+	ssize_t res;
+	unsigned long flags;
+	u64 tsf;
+
+	mutex_lock(&big_buffer_mutex);
+	mutex_lock(&dev->wl->mutex);
+	spin_lock_irqsave(&dev->wl->irq_lock, flags);
+	if (bcm43xx_status(dev) != BCM43xx_STAT_INITIALIZED) {
+		fappend("Board not initialized.\n");
+		goto out;
+	}
+	bcm43xx_tsf_read(dev, &tsf);
+	fappend("0x%08x%08x\n",
+		(unsigned int)((tsf & 0xFFFFFFFF00000000ULL) >> 32),
+		(unsigned int)(tsf & 0xFFFFFFFFULL));
+
+out:
+	spin_unlock_irqrestore(&dev->wl->irq_lock, flags);
+	mutex_unlock(&dev->wl->mutex);
+	res = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
+	mutex_unlock(&big_buffer_mutex);
+
+	return res;
+}
+
+static ssize_t tsf_write_file(struct file *file, const char __user *user_buf,
+			      size_t count, loff_t *ppos)
+{
+	struct bcm43xx_wldev *dev = file->private_data;
+	char *buf = big_buffer;
+	ssize_t buf_size;
+	ssize_t res;
+	unsigned long flags;
+	u64 tsf;
+
+	mutex_lock(&big_buffer_mutex);
+	buf_size = min(count, ARRAY_SIZE(big_buffer) - 1);
+	if (copy_from_user(buf, user_buf, buf_size)) {
+	        res = -EFAULT;
+		goto out_unlock_bb;
+	}
+	mutex_lock(&dev->wl->mutex);
+	spin_lock_irqsave(&dev->wl->irq_lock, flags);
+	if (bcm43xx_status(dev) != BCM43xx_STAT_INITIALIZED) {
+		printk(KERN_INFO PFX "debugfs: Board not initialized.\n");
+		res = -EFAULT;
+		goto out_unlock;
+	}
+	if (sscanf(buf, "%llu", (unsigned long long *)(&tsf)) != 1) {
+		printk(KERN_INFO PFX "debugfs: invalid values for \"tsf\"\n");
+		res = -EINVAL;
+		goto out_unlock;
+	}
+	bcm43xx_tsf_write(dev, tsf);
+	mmiowb();
+	res = buf_size;
+
+out_unlock:
+	spin_unlock_irqrestore(&dev->wl->irq_lock, flags);
+	mutex_unlock(&dev->wl->mutex);
+out_unlock_bb:
+	mutex_unlock(&big_buffer_mutex);
+
+	return res;
+}
+
+static ssize_t txstat_read_file(struct file *file, char __user *userbuf,
+				size_t count, loff_t *ppos)
+{
+	struct bcm43xx_wldev *dev = file->private_data;
+	struct bcm43xx_dfsentry *e = dev->dfsentry;
+	struct bcm43xx_txstatus_log *log = &e->txstatlog;
+	unsigned long flags;
+	char *buf = log->printbuf;
+	const size_t len = ARRAY_SIZE(log->printbuf);
+	size_t pos = 0;
+	ssize_t res;
+	int i, idx;
+	struct bcm43xx_txstatus *stat;
+
+	mutex_lock(&big_buffer_mutex);
+	spin_lock_irqsave(&log->lock, flags);
+	if (!log->printing) {
+		log->printing = 1;
+		fappend("bcm43xx TX status reports:\n\n"
+			"index | cookie | seq | phy_stat | frame_count | "
+			"rts_count | supp_reason | pm_indicated | "
+			"intermediate | for_ampdu | acked\n"
+			"---\n");
+		i = log->end + 1;
+		idx = 0;
+		while (1) {
+			if (i == BCM43xx_NR_LOGGED_TXSTATUS)
+				i = 0;
+			stat = &(log->log[i]);
+			if (stat->cookie) {
+				fappend("%03d | "
+					"0x%04X | 0x%04X | 0x%02X | "
+					"0x%X | 0x%X | "
+					"%u | %u | "
+					"%u | %u | %u\n",
+					idx,
+					stat->cookie, stat->seq, stat->phy_stat,
+					stat->frame_count, stat->rts_count,
+					stat->supp_reason, stat->pm_indicated,
+					stat->intermediate, stat->for_ampdu,
+					stat->acked);
+				idx++;
+			}
+			if (i == log->end)
+				break;
+			i++;
+		}
+		log->buf_avail = pos;
+	}
+	memcpy(big_buffer, buf,
+	       min(log->buf_avail, ARRAY_SIZE(big_buffer)));
+	spin_unlock_irqrestore(&log->lock, flags);
+
+	res = simple_read_from_buffer(userbuf, count, ppos,
+				      big_buffer,
+				      log->buf_avail);
+	if (*ppos == log->buf_avail) {
+		spin_lock_irqsave(&log->lock, flags);
+		log->printing = 0;
+		spin_unlock_irqrestore(&log->lock, flags);
+	}
+	mutex_unlock(&big_buffer_mutex);
+
+	return res;
+}
+
+static ssize_t restart_write_file(struct file *file, const char __user *user_buf,
+				  size_t count, loff_t *ppos)
+{
+	struct bcm43xx_wldev *dev = file->private_data;
+	char *buf = big_buffer;
+	ssize_t buf_size;
+	ssize_t res;
+	unsigned long flags;
+
+	mutex_lock(&big_buffer_mutex);
+	buf_size = min(count, ARRAY_SIZE(big_buffer) - 1);
+	if (copy_from_user(buf, user_buf, buf_size)) {
+	        res = -EFAULT;
+		goto out_unlock_bb;
+	}
+	mutex_lock(&dev->wl->mutex);
+	spin_lock_irqsave(&dev->wl->irq_lock, flags);
+	if (bcm43xx_status(dev) != BCM43xx_STAT_INITIALIZED) {
+		printk(KERN_INFO PFX "debugfs: Board not initialized.\n");
+		res = -EFAULT;
+		goto out_unlock;
+	}
+	if (count > 0 && buf[0] == '1') {
+		bcm43xx_controller_restart(dev, "manually restarted");
+		res = count;
+	} else
+		res = -EINVAL;
+
+out_unlock:
+	spin_unlock_irqrestore(&dev->wl->irq_lock, flags);
+	mutex_unlock(&dev->wl->mutex);
+out_unlock_bb:
+	mutex_unlock(&big_buffer_mutex);
+
+	return res;
+}
+
+#undef fappend
+
+
+static struct file_operations drvinfo_fops = {
+	.read = drvinfo_read_file,
+	.write = write_file_dummy,
+	.open = open_file_generic,
+};
+
+static struct file_operations tsf_fops = {
+	.read = tsf_read_file,
+	.write = tsf_write_file,
+	.open = open_file_generic,
+};
+
+static struct file_operations txstat_fops = {
+	.read = txstat_read_file,
+	.write = write_file_dummy,
+	.open = open_file_generic,
+};
+
+static struct file_operations restart_fops = {
+	.write = restart_write_file,
+	.open = open_file_generic,
+};
+
+
+void bcm43xx_debugfs_add_device(struct bcm43xx_wldev *dev)
+{
+	struct bcm43xx_dfsentry *e;
+	struct bcm43xx_txstatus_log *log;
+	char devdir[16];
+
+	assert(dev);
+	e = kzalloc(sizeof(*e), GFP_KERNEL);
+	if (!e) {
+		printk(KERN_ERR PFX "out of memory\n");
+		return;
+	}
+	e->dev = dev;
+	log = &e->txstatlog;
+	log->log = kcalloc(BCM43xx_NR_LOGGED_TXSTATUS,
+			   sizeof(struct bcm43xx_txstatus),
+			   GFP_KERNEL);
+	if (!log->log) {
+		printk(KERN_ERR PFX "debugfs txstatus log OOM\n");
+		kfree(e);
+		return;
+	}
+	log->end = -1;
+	spin_lock_init(&log->lock);
+
+	dev->dfsentry = e;
+
+	snprintf(devdir, sizeof(devdir), "%s", wiphy_name(dev->wl->hw->wiphy));
+	e->subdir = debugfs_create_dir(devdir, fs.root);
+	e->dentry_tsf = debugfs_create_file("tsf", 0666, e->subdir,
+	                                    dev, &tsf_fops);
+	if (!e->dentry_tsf)
+		printk(KERN_ERR PFX "debugfs: creating \"tsf\" for \"%s\" failed!\n", devdir);
+	e->dentry_txstat = debugfs_create_file("tx_status", 0444, e->subdir,
+						dev, &txstat_fops);
+	if (!e->dentry_txstat)
+		printk(KERN_ERR PFX "debugfs: creating \"tx_status\" for \"%s\" failed!\n", devdir);
+	e->dentry_restart = debugfs_create_file("restart", 0222, e->subdir,
+						dev, &restart_fops);
+	if (!e->dentry_restart)
+		printk(KERN_ERR PFX "debugfs: creating \"restart\" for \"%s\" failed!\n", devdir);
+}
+
+void bcm43xx_debugfs_remove_device(struct bcm43xx_wldev *dev)
+{
+	struct bcm43xx_dfsentry *e;
+
+	if (!dev)
+		return;
+
+	e = dev->dfsentry;
+	assert(e);
+	debugfs_remove(e->dentry_tsf);
+	debugfs_remove(e->dentry_txstat);
+	debugfs_remove(e->dentry_restart);
+	debugfs_remove(e->subdir);
+	kfree(e->txstatlog.log);
+	kfree(e);
+}
+
+void bcm43xx_debugfs_log_txstat(struct bcm43xx_wldev *dev,
+				const struct bcm43xx_txstatus *status)
+{
+	struct bcm43xx_dfsentry *e = dev->dfsentry;
+	struct bcm43xx_txstatus_log *log;
+	struct bcm43xx_txstatus *cur;
+	int i;
+
+	log = &e->txstatlog;
+	assert(irqs_disabled());
+	spin_lock(&log->lock);
+	i = log->end + 1;
+	if (i == BCM43xx_NR_LOGGED_TXSTATUS)
+		i = 0;
+	log->end = i;
+	cur = &(log->log[i]);
+	memcpy(cur, status, sizeof(*cur));
+	spin_unlock(&log->lock);
+}
+
+void bcm43xx_debugfs_init(void)
+{
+	memset(&fs, 0, sizeof(fs));
+	fs.root = debugfs_create_dir(KBUILD_MODNAME, NULL);
+	if (!fs.root)
+		printk(KERN_ERR PFX "debugfs: creating \"" KBUILD_MODNAME "\" subdir failed!\n");
+	fs.dentry_driverinfo = debugfs_create_file("driver", 0444, fs.root, NULL, &drvinfo_fops);
+	if (!fs.dentry_driverinfo)
+		printk(KERN_ERR PFX "debugfs: creating \"" KBUILD_MODNAME "/driver\" failed!\n");
+}
+
+void bcm43xx_debugfs_exit(void)
+{
+	debugfs_remove(fs.dentry_driverinfo);
+	debugfs_remove(fs.root);
+}
+
+void bcm43xx_printk_dump(const char *data,
+			 size_t size,
+			 const char *description)
+{
+	unsigned int i;
+	char c;
+
+	printk(KERN_INFO PFX "Data dump (%s, %lu bytes):",
+	       description, (unsigned long)size);
+	for (i = 0; i < size; i++) {
+		c = data[i];
+		if (i % 8 == 0)
+			printk("\n" KERN_INFO PFX "0x%08x:  0x%02x, ", i, c & 0xff);
+		else
+			printk("0x%02x, ", c & 0xff);
+	}
+	printk("\n");
+}
+
+void bcm43xx_printk_bitdump(const unsigned char *data,
+			    size_t bytes, int msb_to_lsb,
+			    const char *description)
+{
+	unsigned int i;
+	int j;
+	const unsigned char *d;
+
+	printk(KERN_INFO PFX "*** Bitdump (%s, %lu bytes, %s) ***",
+	       description, (unsigned long)bytes,
+	       msb_to_lsb ? "MSB to LSB" : "LSB to MSB");
+	for (i = 0; i < bytes; i++) {
+		d = data + i;
+		if (i % 8 == 0)
+			printk("\n" KERN_INFO PFX "0x%08x:  ", i);
+		if (msb_to_lsb) {
+			for (j = 7; j >= 0; j--) {
+				if (*d & (1 << j))
+					printk("1");
+				else
+					printk("0");
+			}
+		} else {
+			for (j = 0; j < 8; j++) {
+				if (*d & (1 << j))
+					printk("1");
+				else
+					printk("0");
+			}
+		}
+		printk(" ");
+	}
+	printk("\n");
+}