| /* |
| * 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. |
| */ |
| #include <linux/debugfs.h> |
| #include <linux/netdevice.h> |
| #include <linux/module.h> |
| #include <linux/devcoredump.h> |
| |
| #include <brcmu_wifi.h> |
| #include <brcmu_utils.h> |
| #include "core.h" |
| #include "bus.h" |
| #include "fweh.h" |
| #include "debug.h" |
| |
| static struct dentry *root_folder; |
| |
| int brcmf_debug_create_memdump(struct brcmf_bus *bus, const void *data, |
| size_t len) |
| { |
| void *dump; |
| size_t ramsize; |
| int err; |
| |
| ramsize = brcmf_bus_get_ramsize(bus); |
| if (!ramsize) |
| return -ENOTSUPP; |
| |
| dump = vzalloc(len + ramsize); |
| if (!dump) |
| return -ENOMEM; |
| |
| memcpy(dump, data, len); |
| err = brcmf_bus_get_memdump(bus, dump + len, ramsize); |
| if (err) { |
| vfree(dump); |
| return err; |
| } |
| |
| dev_coredumpv(bus->dev, dump, len + ramsize, GFP_KERNEL); |
| |
| return 0; |
| } |
| |
| void brcmf_debugfs_init(void) |
| { |
| root_folder = debugfs_create_dir(KBUILD_MODNAME, NULL); |
| if (IS_ERR(root_folder)) |
| root_folder = NULL; |
| } |
| |
| void brcmf_debugfs_exit(void) |
| { |
| if (!root_folder) |
| return; |
| |
| debugfs_remove_recursive(root_folder); |
| root_folder = NULL; |
| } |
| |
| int brcmf_debug_attach(struct brcmf_pub *drvr) |
| { |
| struct device *dev = drvr->bus_if->dev; |
| |
| if (!root_folder) |
| return -ENODEV; |
| |
| drvr->dbgfs_dir = debugfs_create_dir(dev_name(dev), root_folder); |
| if (IS_ERR(drvr->dbgfs_dir)) |
| return PTR_ERR(drvr->dbgfs_dir); |
| |
| return 0; |
| } |
| |
| void brcmf_debug_detach(struct brcmf_pub *drvr) |
| { |
| brcmf_fweh_unregister(drvr, BRCMF_E_PSM_WATCHDOG); |
| |
| if (!IS_ERR_OR_NULL(drvr->dbgfs_dir)) |
| debugfs_remove_recursive(drvr->dbgfs_dir); |
| } |
| |
| struct dentry *brcmf_debugfs_get_devdir(struct brcmf_pub *drvr) |
| { |
| return drvr->dbgfs_dir; |
| } |
| |
| int brcmf_debugfs_add_entry(struct brcmf_pub *drvr, const char *fn, |
| int (*read_fn)(struct seq_file *seq, void *data)) |
| { |
| struct dentry *e; |
| |
| e = debugfs_create_devm_seqfile(drvr->bus_if->dev, fn, |
| drvr->dbgfs_dir, read_fn); |
| return PTR_ERR_OR_ZERO(e); |
| } |