LXR linux/drivers/net/wireless/broadcom/brcm80211/brcmfmac/debug.c

   1// SPDX-License-Identifier: ISC
   2/*
   3 * Copyright (c) 2012 Broadcom Corporation
   4 */
   5#include <linux/debugfs.h>
   6#include <linux/netdevice.h>
   7#include <linux/module.h>
   8#include <linux/devcoredump.h>
   9
  10#include <brcmu_wifi.h>
  11#include <brcmu_utils.h>
  12#include "core.h"
  13#include "bus.h"
  14#include "fweh.h"
  15#include "debug.h"
  16
  17int brcmf_debug_create_memdump(struct brcmf_bus *bus, const void *data,
  18                               size_t len)
  19{
  20        void *dump;
  21        size_t ramsize;
  22        int err;
  23
  24        ramsize = brcmf_bus_get_ramsize(bus);
  25        if (!ramsize)
  26                return -ENOTSUPP;
  27
  28        dump = vzalloc(len + ramsize);
  29        if (!dump)
  30                return -ENOMEM;
  31
  32        if (data && len > 0)
  33                memcpy(dump, data, len);
  34        err = brcmf_bus_get_memdump(bus, dump + len, ramsize);
  35        if (err) {
  36                vfree(dump);
  37                return err;
  38        }
  39
  40        dev_coredumpv(bus->dev, dump, len + ramsize, GFP_KERNEL);
  41
  42        return 0;
  43}
  44
  45struct dentry *brcmf_debugfs_get_devdir(struct brcmf_pub *drvr)
  46{
  47        return drvr->wiphy->debugfsdir;
  48}
  49
  50int brcmf_debugfs_add_entry(struct brcmf_pub *drvr, const char *fn,
  51                            int (*read_fn)(struct seq_file *seq, void *data))
  52{
  53        struct dentry *e;
  54
  55        WARN(!drvr->wiphy->debugfsdir, "wiphy not (yet) registered\n");
  56        e = debugfs_create_devm_seqfile(drvr->bus_if->dev, fn,
  57                                        drvr->wiphy->debugfsdir, read_fn);
  58        return PTR_ERR_OR_ZERO(e);
  59}
  60