cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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debug.c (1209B)

      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
     50void brcmf_debugfs_add_entry(struct brcmf_pub *drvr, const char *fn,
     51			    int (*read_fn)(struct seq_file *seq, void *data))
     52{
     53	WARN(!drvr->wiphy->debugfsdir, "wiphy not (yet) registered\n");
     54	debugfs_create_devm_seqfile(drvr->bus_if->dev, fn,
     55				    drvr->wiphy->debugfsdir, read_fn);
     56}