brcmsmac: hardware info in debugfs

Put basic information about hardware in debugfs.

Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: Hante Meuleman <meuleman@broadcom.com>
Reviewed-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Piotr Haber <phaber@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Acked-by: Seth Forshee <seth.forshee@canonical.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 113 insertions, 0 deletions

diff --git a/drivers/net/wireless/brcm80211/brcmsmac/debug.c b/drivers/net/wireless/brcm80211/brcmsmac/debug.c
index 6ba4136c7cf6..be84791857cb 100644
--- a/drivers/net/wireless/brcm80211/brcmsmac/debug.c
+++ b/drivers/net/wireless/brcm80211/brcmsmac/debug.c
@@ -1,8 +1,121 @@
+/*
+ * Copyright (c) 2012 Broadcom Corporation
+ * Copyright (c) 2012 Canonical Ltd.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+#include <linux/debugfs.h>
+#include <linux/if_ether.h>
+#include <linux/if.h>
 #include <linux/net.h>
+#include <linux/netdevice.h>
+#include <linux/ieee80211.h>
+#include <linux/module.h>
+#include <linux/netdevice.h>
+#include <net/mac80211.h>
+
+#include <defs.h>
+#include <brcmu_wifi.h>
+#include <brcmu_utils.h>
 #include "types.h"
+#include "main.h"
 #include "debug.h"
 #include "brcms_trace_events.h"
 
+static struct dentry *root_folder;
+
+void brcms_debugfs_init(void)
+{
+        root_folder = debugfs_create_dir(KBUILD_MODNAME, NULL);
+        if (IS_ERR(root_folder))
+                root_folder = NULL;
+}
+
+void brcms_debugfs_exit(void)
+{
+        if (!root_folder)
+                return;
+
+        debugfs_remove_recursive(root_folder);
+        root_folder = NULL;
+}
+
+int brcms_debugfs_attach(struct brcms_pub *drvr)
+{
+        if (!root_folder)
+                return -ENODEV;
+
+        drvr->dbgfs_dir = debugfs_create_dir(
+                 dev_name(&drvr->wlc->hw->d11core->dev), root_folder);
+        return PTR_RET(drvr->dbgfs_dir);
+}
+
+void brcms_debugfs_detach(struct brcms_pub *drvr)
+{
+        if (!IS_ERR_OR_NULL(drvr->dbgfs_dir))
+                debugfs_remove_recursive(drvr->dbgfs_dir);
+}
+
+struct dentry *brcms_debugfs_get_devdir(struct brcms_pub *drvr)
+{
+        return drvr->dbgfs_dir;
+}
+
+static
+ssize_t brcms_debugfs_hardware_read(struct file *f, char __user *data,
+                                        size_t count, loff_t *ppos)
+{
+        char buf[128];
+        int res;
+        struct brcms_pub *drvr = f->private_data;
+
+        /* only allow read from start */
+        if (*ppos > 0)
+                return 0;
+
+        res = scnprintf(buf, sizeof(buf),
+                "board vendor: %x\n"
+                "board type: %x\n"
+                "board revision: %x\n"
+                "board flags: %x\n"
+                "board flags2: %x\n"
+                "firmware revision: %x\n",
+                drvr->wlc->hw->d11core->bus->boardinfo.vendor,
+                drvr->wlc->hw->d11core->bus->boardinfo.type,
+                drvr->wlc->hw->boardrev,
+                drvr->wlc->hw->boardflags,
+                drvr->wlc->hw->boardflags2,
+                drvr->wlc->ucode_rev
+                );
+
+        return simple_read_from_buffer(data, count, ppos, buf, res);
+}
+
+static const struct file_operations brcms_debugfs_hardware_ops = {
+        .owner = THIS_MODULE,
+        .open = simple_open,
+        .read = brcms_debugfs_hardware_read
+};
+
+void brcms_debugfs_create_files(struct brcms_pub *drvr)
+{
+        struct dentry *dentry = drvr->dbgfs_dir;
+
+        if (!IS_ERR_OR_NULL(dentry))
+                debugfs_create_file("hardware", S_IRUGO, dentry,
+                                    drvr, &brcms_debugfs_hardware_ops);
+}
+
 #define __brcms_fn(fn)                                          \
 void __brcms_ ##fn(struct device *dev, const char *fmt, ...)    \
 {                                                               \