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>

diff --git a/drivers/net/wireless/brcm80211/brcmsmac/debug.c b/drivers/net/wireless/brcm80211/brcmsmac/debug.c
index 6ba4136..be84791 100644 (file)
--- 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, ...)   \
 {                                                              \

diff --git a/drivers/net/wireless/brcm80211/brcmsmac/debug.h b/drivers/net/wireless/brcm80211/brcmsmac/debug.h
index f77066b..796836b 100644 (file)
--- a/drivers/net/wireless/brcm80211/brcmsmac/debug.h
+++ b/drivers/net/wireless/brcm80211/brcmsmac/debug.h
@@ -1,3 +1,18 @@
+/*
+ * Copyright (c) 2012 Broadcom Corporation
+ *
+ * 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.
+ */
 #ifndef _BRCMS_DEBUG_H_
 #define _BRCMS_DEBUG_H_
 
@@ -49,4 +64,12 @@ void __brcms_dbg(struct device *dev, u32 level, const char *func,
 #define brcms_dbg_dma(core, f, a...)           brcms_dbg(core, BRCM_DL_DMA, f, ##a)
 #define brcms_dbg_ht(core, f, a...)            brcms_dbg(core, BRCM_DL_HT, f, ##a)
 
+struct brcms_pub;
+void brcms_debugfs_init(void);
+void brcms_debugfs_exit(void);
+int brcms_debugfs_attach(struct brcms_pub *drvr);
+void brcms_debugfs_detach(struct brcms_pub *drvr);
+struct dentry *brcms_debugfs_get_devdir(struct brcms_pub *drvr);
+void brcms_debugfs_create_files(struct brcms_pub *drvr);
+
 #endif /* _BRCMS_DEBUG_H_ */

diff --git a/drivers/net/wireless/brcm80211/brcmsmac/mac80211_if.c b/drivers/net/wireless/brcm80211/brcmsmac/mac80211_if.c
index 976720c..85dbaf8 100644 (file)
--- a/drivers/net/wireless/brcm80211/brcmsmac/mac80211_if.c
+++ b/drivers/net/wireless/brcm80211/brcmsmac/mac80211_if.c
@@ -846,8 +846,10 @@ static void brcms_free(struct brcms_info *wl)
        /* kill dpc */
        tasklet_kill(&wl->tasklet);
 
-       if (wl->pub)
+       if (wl->pub) {
+               brcms_debugfs_detach(wl->pub);
                brcms_c_module_unregister(wl->pub, "linux", wl);
+       }
 
        /* free common resources */
        if (wl->wlc) {
@@ -1077,6 +1079,8 @@ static struct brcms_info *brcms_attach(struct bcma_device *pdev)
            regulatory_hint(wl->wiphy, wl->pub->srom_ccode))
                wiphy_err(wl->wiphy, "%s: regulatory hint failed\n", __func__);
 
+       brcms_debugfs_attach(wl->pub);
+       brcms_debugfs_create_files(wl->pub);
        n_adapters_found++;
        return wl;
 
@@ -1185,6 +1189,7 @@ static DECLARE_WORK(brcms_driver_work, brcms_driver_init);
 
 static int __init brcms_module_init(void)
 {
+       brcms_debugfs_init();
        if (!schedule_work(&brcms_driver_work))
                return -EBUSY;
 
@@ -1202,6 +1207,7 @@ static void __exit brcms_module_exit(void)
 {
        cancel_work_sync(&brcms_driver_work);
        bcma_driver_unregister(&brcms_bcma_driver);
+       brcms_debugfs_exit();
 }
 
 module_init(brcms_module_init);

diff --git a/drivers/net/wireless/brcm80211/brcmsmac/pub.h b/drivers/net/wireless/brcm80211/brcmsmac/pub.h
index 2aafe74..4fb2834 100644 (file)
--- a/drivers/net/wireless/brcm80211/brcmsmac/pub.h
+++ b/drivers/net/wireless/brcm80211/brcmsmac/pub.h
@@ -176,6 +176,7 @@ struct brcms_pub {
        bool phy_11ncapable;    /* the PHY/HW is capable of 802.11N */
 
        struct wl_cnt *_cnt;    /* low-level counters in driver */
+       struct dentry *dbgfs_dir;
 };
 
 enum wlc_par_id {