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 000000000000..d2c3401e9b70
--- /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");
+}