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path: root/drivers/net/wireless/bcm43xx/bcm43xx_debugfs.c
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Diffstat (limited to 'drivers/net/wireless/bcm43xx/bcm43xx_debugfs.c')
-rw-r--r--drivers/net/wireless/bcm43xx/bcm43xx_debugfs.c499
1 files changed, 499 insertions, 0 deletions
diff --git a/drivers/net/wireless/bcm43xx/bcm43xx_debugfs.c b/drivers/net/wireless/bcm43xx/bcm43xx_debugfs.c
new file mode 100644
index 00000000000..d2c3401e9b7
--- /dev/null
+++ b/drivers/net/wireless/bcm43xx/bcm43xx_debugfs.c
@@ -0,0 +1,499 @@
+/*
+
+ Broadcom BCM43xx wireless driver
+
+ debugfs driver debugging code
+
+ Copyright (c) 2005 Michael Buesch <mbuesch@freenet.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 <asm/io.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 really_big_buffer[REALLY_BIG_BUFFER_SIZE];
+static DECLARE_MUTEX(big_buffer_sem);
+
+
+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->u.generic_ip;
+ return 0;
+}
+
+#define fappend(fmt, x...) pos += snprintf(buf + pos, len - pos, fmt , ##x)
+
+static ssize_t devinfo_read_file(struct file *file, char __user *userbuf,
+ size_t count, loff_t *ppos)
+{
+ const size_t len = REALLY_BIG_BUFFER_SIZE;
+
+ struct bcm43xx_private *bcm = file->private_data;
+ char *buf = really_big_buffer;
+ size_t pos = 0;
+ ssize_t res;
+ struct net_device *net_dev;
+ struct pci_dev *pci_dev;
+ unsigned long flags;
+ u16 tmp16;
+ int i;
+
+ down(&big_buffer_sem);
+
+ bcm43xx_lock_mmio(bcm, flags);
+ if (!bcm->initialized) {
+ fappend("Board not initialized.\n");
+ goto out;
+ }
+ net_dev = bcm->net_dev;
+ pci_dev = bcm->pci_dev;
+
+ /* This is where the information is written to the "devinfo" file */
+ fappend("*** %s devinfo ***\n", net_dev->name);
+ fappend("vendor: 0x%04x device: 0x%04x\n",
+ pci_dev->vendor, pci_dev->device);
+ fappend("subsystem_vendor: 0x%04x subsystem_device: 0x%04x\n",
+ pci_dev->subsystem_vendor, pci_dev->subsystem_device);
+ fappend("IRQ: %d\n", bcm->irq);
+ fappend("mmio_addr: 0x%p mmio_len: %u\n", bcm->mmio_addr, bcm->mmio_len);
+ fappend("chip_id: 0x%04x chip_rev: 0x%02x\n", bcm->chip_id, bcm->chip_rev);
+ if ((bcm->core_80211[0].rev >= 3) && (bcm43xx_read32(bcm, 0x0158) & (1 << 16)))
+ fappend("Radio disabled by hardware!\n");
+ if ((bcm->core_80211[0].rev < 3) && !(bcm43xx_read16(bcm, 0x049A) & (1 << 4)))
+ fappend("Radio disabled by hardware!\n");
+ fappend("board_vendor: 0x%04x board_type: 0x%04x\n", bcm->board_vendor,
+ bcm->board_type);
+
+ fappend("\nCores:\n");
+#define fappend_core(name, info) fappend("core \"" name "\" %s, %s, id: 0x%04x, " \
+ "rev: 0x%02x, index: 0x%02x\n", \
+ (info).available \
+ ? "available" : "nonavailable", \
+ (info).enabled \
+ ? "enabled" : "disabled", \
+ (info).id, (info).rev, (info).index)
+ fappend_core("CHIPCOMMON", bcm->core_chipcommon);
+ fappend_core("PCI", bcm->core_pci);
+ fappend_core("first 80211", bcm->core_80211[0]);
+ fappend_core("second 80211", bcm->core_80211[1]);
+#undef fappend_core
+ tmp16 = bcm43xx_read16(bcm, BCM43xx_MMIO_GPIO_CONTROL);
+ fappend("LEDs: ");
+ for (i = 0; i < BCM43xx_NR_LEDS; i++)
+ fappend("%d ", !!(tmp16 & (1 << i)));
+ fappend("\n");
+
+out:
+ bcm43xx_unlock_mmio(bcm, flags);
+ res = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
+ up(&big_buffer_sem);
+ return res;
+}
+
+static ssize_t drvinfo_read_file(struct file *file, char __user *userbuf,
+ size_t count, loff_t *ppos)
+{
+ const size_t len = REALLY_BIG_BUFFER_SIZE;
+
+ char *buf = really_big_buffer;
+ size_t pos = 0;
+ ssize_t res;
+
+ down(&big_buffer_sem);
+
+ /* 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);
+ up(&big_buffer_sem);
+ return res;
+}
+
+static ssize_t spromdump_read_file(struct file *file, char __user *userbuf,
+ size_t count, loff_t *ppos)
+{
+ const size_t len = REALLY_BIG_BUFFER_SIZE;
+
+ struct bcm43xx_private *bcm = file->private_data;
+ char *buf = really_big_buffer;
+ size_t pos = 0;
+ ssize_t res;
+ unsigned long flags;
+
+ down(&big_buffer_sem);
+ bcm43xx_lock_mmio(bcm, flags);
+ if (!bcm->initialized) {
+ fappend("Board not initialized.\n");
+ goto out;
+ }
+
+ /* This is where the information is written to the "sprom_dump" file */
+ fappend("boardflags: 0x%04x\n", bcm->sprom.boardflags);
+
+out:
+ bcm43xx_unlock_mmio(bcm, flags);
+ res = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
+ up(&big_buffer_sem);
+ return res;
+}
+
+static ssize_t tsf_read_file(struct file *file, char __user *userbuf,
+ size_t count, loff_t *ppos)
+{
+ const size_t len = REALLY_BIG_BUFFER_SIZE;
+
+ struct bcm43xx_private *bcm = file->private_data;
+ char *buf = really_big_buffer;
+ size_t pos = 0;
+ ssize_t res;
+ unsigned long flags;
+ u64 tsf;
+
+ down(&big_buffer_sem);
+ bcm43xx_lock_mmio(bcm, flags);
+ if (!bcm->initialized) {
+ fappend("Board not initialized.\n");
+ goto out;
+ }
+ bcm43xx_tsf_read(bcm, &tsf);
+ fappend("0x%08x%08x\n",
+ (unsigned int)((tsf & 0xFFFFFFFF00000000ULL) >> 32),
+ (unsigned int)(tsf & 0xFFFFFFFFULL));
+
+out:
+ bcm43xx_unlock_mmio(bcm, flags);
+ res = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
+ up(&big_buffer_sem);
+ return res;
+}
+
+static ssize_t tsf_write_file(struct file *file, const char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ struct bcm43xx_private *bcm = file->private_data;
+ char *buf = really_big_buffer;
+ ssize_t buf_size;
+ ssize_t res;
+ unsigned long flags;
+ u64 tsf;
+
+ buf_size = min(count, sizeof (really_big_buffer) - 1);
+ down(&big_buffer_sem);
+ if (copy_from_user(buf, user_buf, buf_size)) {
+ res = -EFAULT;
+ goto out_up;
+ }
+ bcm43xx_lock_mmio(bcm, flags);
+ if (!bcm->initialized) {
+ printk(KERN_INFO PFX "debugfs: Board not initialized.\n");
+ res = -EFAULT;
+ goto out_unlock;
+ }
+ if (sscanf(buf, "%lli", &tsf) != 1) {
+ printk(KERN_INFO PFX "debugfs: invalid values for \"tsf\"\n");
+ res = -EINVAL;
+ goto out_unlock;
+ }
+ bcm43xx_tsf_write(bcm, tsf);
+ res = buf_size;
+
+out_unlock:
+ bcm43xx_unlock_mmio(bcm, flags);
+out_up:
+ up(&big_buffer_sem);
+ return res;
+}
+
+static ssize_t txstat_read_file(struct file *file, char __user *userbuf,
+ size_t count, loff_t *ppos)
+{
+ const size_t len = REALLY_BIG_BUFFER_SIZE;
+
+ struct bcm43xx_private *bcm = file->private_data;
+ char *buf = really_big_buffer;
+ size_t pos = 0;
+ ssize_t res;
+ unsigned long flags;
+ struct bcm43xx_dfsentry *e;
+ struct bcm43xx_xmitstatus *status;
+ int i, cnt, j = 0;
+
+ down(&big_buffer_sem);
+ bcm43xx_lock(bcm, flags);
+
+ fappend("Last %d logged xmitstatus blobs (Latest first):\n\n",
+ BCM43xx_NR_LOGGED_XMITSTATUS);
+ e = bcm->dfsentry;
+ if (e->xmitstatus_printing == 0) {
+ /* At the beginning, make a copy of all data to avoid
+ * concurrency, as this function is called multiple
+ * times for big logs. Without copying, the data might
+ * change between reads. This would result in total trash.
+ */
+ e->xmitstatus_printing = 1;
+ e->saved_xmitstatus_ptr = e->xmitstatus_ptr;
+ e->saved_xmitstatus_cnt = e->xmitstatus_cnt;
+ memcpy(e->xmitstatus_print_buffer, e->xmitstatus_buffer,
+ BCM43xx_NR_LOGGED_XMITSTATUS * sizeof(*(e->xmitstatus_buffer)));
+ }
+ i = e->saved_xmitstatus_ptr - 1;
+ if (i < 0)
+ i = BCM43xx_NR_LOGGED_XMITSTATUS - 1;
+ cnt = e->saved_xmitstatus_cnt;
+ while (cnt) {
+ status = e->xmitstatus_print_buffer + i;
+ fappend("0x%02x: cookie: 0x%04x, flags: 0x%02x, "
+ "cnt1: 0x%02x, cnt2: 0x%02x, seq: 0x%04x, "
+ "unk: 0x%04x\n", j,
+ status->cookie, status->flags,
+ status->cnt1, status->cnt2, status->seq,
+ status->unknown);
+ j++;
+ cnt--;
+ i--;
+ if (i < 0)
+ i = BCM43xx_NR_LOGGED_XMITSTATUS - 1;
+ }
+
+ bcm43xx_unlock(bcm, flags);
+ res = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
+ bcm43xx_lock(bcm, flags);
+ if (*ppos == pos) {
+ /* Done. Drop the copied data. */
+ e->xmitstatus_printing = 0;
+ }
+ bcm43xx_unlock(bcm, flags);
+ up(&big_buffer_sem);
+ return res;
+}
+
+#undef fappend
+
+
+static struct file_operations devinfo_fops = {
+ .read = devinfo_read_file,
+ .write = write_file_dummy,
+ .open = open_file_generic,
+};
+
+static struct file_operations spromdump_fops = {
+ .read = spromdump_read_file,
+ .write = write_file_dummy,
+ .open = open_file_generic,
+};
+
+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,
+};
+
+
+void bcm43xx_debugfs_add_device(struct bcm43xx_private *bcm)
+{
+ struct bcm43xx_dfsentry *e;
+ char devdir[IFNAMSIZ];
+
+ assert(bcm);
+ e = kzalloc(sizeof(*e), GFP_KERNEL);
+ if (!e) {
+ printk(KERN_ERR PFX "out of memory\n");
+ return;
+ }
+ e->bcm = bcm;
+ e->xmitstatus_buffer = kzalloc(BCM43xx_NR_LOGGED_XMITSTATUS
+ * sizeof(*(e->xmitstatus_buffer)),
+ GFP_KERNEL);
+ if (!e->xmitstatus_buffer) {
+ printk(KERN_ERR PFX "out of memory\n");
+ kfree(e);
+ return;
+ }
+ e->xmitstatus_print_buffer = kzalloc(BCM43xx_NR_LOGGED_XMITSTATUS
+ * sizeof(*(e->xmitstatus_buffer)),
+ GFP_KERNEL);
+ if (!e->xmitstatus_print_buffer) {
+ printk(KERN_ERR PFX "out of memory\n");
+ kfree(e);
+ return;
+ }
+
+
+ bcm->dfsentry = e;
+
+ strncpy(devdir, bcm->net_dev->name, ARRAY_SIZE(devdir));
+ e->subdir = debugfs_create_dir(devdir, fs.root);
+ e->dentry_devinfo = debugfs_create_file("devinfo", 0444, e->subdir,
+ bcm, &devinfo_fops);
+ if (!e->dentry_devinfo)
+ printk(KERN_ERR PFX "debugfs: creating \"devinfo\" for \"%s\" failed!\n", devdir);
+ e->dentry_spromdump = debugfs_create_file("sprom_dump", 0444, e->subdir,
+ bcm, &spromdump_fops);
+ if (!e->dentry_spromdump)
+ printk(KERN_ERR PFX "debugfs: creating \"sprom_dump\" for \"%s\" failed!\n", devdir);
+ e->dentry_tsf = debugfs_create_file("tsf", 0666, e->subdir,
+ bcm, &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,
+ bcm, &txstat_fops);
+ if (!e->dentry_txstat)
+ printk(KERN_ERR PFX "debugfs: creating \"tx_status\" for \"%s\" failed!\n", devdir);
+}
+
+void bcm43xx_debugfs_remove_device(struct bcm43xx_private *bcm)
+{
+ struct bcm43xx_dfsentry *e;
+
+ if (!bcm)
+ return;
+
+ e = bcm->dfsentry;
+ assert(e);
+ debugfs_remove(e->dentry_spromdump);
+ debugfs_remove(e->dentry_devinfo);
+ debugfs_remove(e->dentry_tsf);
+ debugfs_remove(e->dentry_txstat);
+ debugfs_remove(e->subdir);
+ kfree(e->xmitstatus_buffer);
+ kfree(e->xmitstatus_print_buffer);
+ kfree(e);
+}
+
+void bcm43xx_debugfs_log_txstat(struct bcm43xx_private *bcm,
+ struct bcm43xx_xmitstatus *status)
+{
+ struct bcm43xx_dfsentry *e;
+ struct bcm43xx_xmitstatus *savedstatus;
+
+ /* This is protected by bcm->_lock */
+ e = bcm->dfsentry;
+ assert(e);
+ savedstatus = e->xmitstatus_buffer + e->xmitstatus_ptr;
+ memcpy(savedstatus, status, sizeof(*status));
+ e->xmitstatus_ptr++;
+ if (e->xmitstatus_ptr >= BCM43xx_NR_LOGGED_XMITSTATUS)
+ e->xmitstatus_ptr = 0;
+ if (e->xmitstatus_cnt < BCM43xx_NR_LOGGED_XMITSTATUS)
+ e->xmitstatus_cnt++;
+}
+
+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)
+{
+ size_t i;
+ char c;
+
+ printk(KERN_INFO PFX "Data dump (%s, %u bytes):",
+ description, 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)
+{
+ size_t i;
+ int j;
+ const unsigned char *d;
+
+ printk(KERN_INFO PFX "*** Bitdump (%s, %u bytes, %s) ***",
+ description, 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");
+}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-27 16:46:51 +0000