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 17 int 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 45 struct dentry *brcmf_debugfs_get_devdir(struct brcmf_pub *drvr) 46 { 47 return drvr->wiphy->debugfsdir; 48 } 49 50 void 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 } 57