diff options
Diffstat (limited to 'drivers/staging/uwb/uwb-debug.c')
| -rw-r--r-- | drivers/staging/uwb/uwb-debug.c | 354 |
1 files changed, 0 insertions, 354 deletions
diff --git a/drivers/staging/uwb/uwb-debug.c b/drivers/staging/uwb/uwb-debug.c deleted file mode 100644 index dd14df219ef8..000000000000 --- a/drivers/staging/uwb/uwb-debug.c +++ /dev/null @@ -1,354 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Ultra Wide Band - * Debug support - * - * Copyright (C) 2005-2006 Intel Corporation - * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com> - * Copyright (C) 2008 Cambridge Silicon Radio Ltd. - * - * FIXME: doc - */ - -#include <linux/spinlock.h> -#include <linux/module.h> -#include <linux/slab.h> -#include <linux/notifier.h> -#include <linux/device.h> -#include <linux/debugfs.h> -#include <linux/uaccess.h> -#include <linux/seq_file.h> - -#include "include/debug-cmd.h" -#include "uwb-internal.h" - -/* - * Debug interface - * - * Per radio controller debugfs files (in uwb/uwbN/): - * - * command: Flexible command interface (see <linux/uwb/debug-cmd.h>). - * - * reservations: information on reservations. - * - * accept: Set to true (Y or 1) to accept reservation requests from - * peers. - * - * drp_avail: DRP availability information. - */ - -struct uwb_dbg { - struct uwb_pal pal; - - bool accept; - struct list_head rsvs; - - struct dentry *root_d; - struct dentry *command_f; - struct dentry *reservations_f; - struct dentry *accept_f; - struct dentry *drp_avail_f; - spinlock_t list_lock; -}; - -static struct dentry *root_dir; - -static void uwb_dbg_rsv_cb(struct uwb_rsv *rsv) -{ - struct uwb_dbg *dbg = rsv->pal_priv; - - uwb_rsv_dump("debug", rsv); - - if (rsv->state == UWB_RSV_STATE_NONE) { - spin_lock(&dbg->list_lock); - list_del(&rsv->pal_node); - spin_unlock(&dbg->list_lock); - uwb_rsv_destroy(rsv); - } -} - -static int cmd_rsv_establish(struct uwb_rc *rc, - struct uwb_dbg_cmd_rsv_establish *cmd) -{ - struct uwb_mac_addr macaddr; - struct uwb_rsv *rsv; - struct uwb_dev *target; - int ret; - - memcpy(&macaddr, cmd->target, sizeof(macaddr)); - target = uwb_dev_get_by_macaddr(rc, &macaddr); - if (target == NULL) - return -ENODEV; - - rsv = uwb_rsv_create(rc, uwb_dbg_rsv_cb, rc->dbg); - if (rsv == NULL) { - uwb_dev_put(target); - return -ENOMEM; - } - - rsv->target.type = UWB_RSV_TARGET_DEV; - rsv->target.dev = target; - rsv->type = cmd->type; - rsv->max_mas = cmd->max_mas; - rsv->min_mas = cmd->min_mas; - rsv->max_interval = cmd->max_interval; - - ret = uwb_rsv_establish(rsv); - if (ret) - uwb_rsv_destroy(rsv); - else { - spin_lock(&(rc->dbg)->list_lock); - list_add_tail(&rsv->pal_node, &rc->dbg->rsvs); - spin_unlock(&(rc->dbg)->list_lock); - } - return ret; -} - -static int cmd_rsv_terminate(struct uwb_rc *rc, - struct uwb_dbg_cmd_rsv_terminate *cmd) -{ - struct uwb_rsv *rsv, *found = NULL; - int i = 0; - - spin_lock(&(rc->dbg)->list_lock); - - list_for_each_entry(rsv, &rc->dbg->rsvs, pal_node) { - if (i == cmd->index) { - found = rsv; - uwb_rsv_get(found); - break; - } - i++; - } - - spin_unlock(&(rc->dbg)->list_lock); - - if (!found) - return -EINVAL; - - uwb_rsv_terminate(found); - uwb_rsv_put(found); - - return 0; -} - -static int cmd_ie_add(struct uwb_rc *rc, struct uwb_dbg_cmd_ie *ie_to_add) -{ - return uwb_rc_ie_add(rc, - (const struct uwb_ie_hdr *) ie_to_add->data, - ie_to_add->len); -} - -static int cmd_ie_rm(struct uwb_rc *rc, struct uwb_dbg_cmd_ie *ie_to_rm) -{ - return uwb_rc_ie_rm(rc, ie_to_rm->data[0]); -} - -static ssize_t command_write(struct file *file, const char __user *buf, - size_t len, loff_t *off) -{ - struct uwb_rc *rc = file->private_data; - struct uwb_dbg_cmd cmd; - int ret = 0; - - if (len != sizeof(struct uwb_dbg_cmd)) - return -EINVAL; - - if (copy_from_user(&cmd, buf, len) != 0) - return -EFAULT; - - switch (cmd.type) { - case UWB_DBG_CMD_RSV_ESTABLISH: - ret = cmd_rsv_establish(rc, &cmd.rsv_establish); - break; - case UWB_DBG_CMD_RSV_TERMINATE: - ret = cmd_rsv_terminate(rc, &cmd.rsv_terminate); - break; - case UWB_DBG_CMD_IE_ADD: - ret = cmd_ie_add(rc, &cmd.ie_add); - break; - case UWB_DBG_CMD_IE_RM: - ret = cmd_ie_rm(rc, &cmd.ie_rm); - break; - case UWB_DBG_CMD_RADIO_START: - ret = uwb_radio_start(&rc->dbg->pal); - break; - case UWB_DBG_CMD_RADIO_STOP: - uwb_radio_stop(&rc->dbg->pal); - break; - default: - return -EINVAL; - } - - return ret < 0 ? ret : len; -} - -static const struct file_operations command_fops = { - .open = simple_open, - .write = command_write, - .read = NULL, - .llseek = no_llseek, - .owner = THIS_MODULE, -}; - -static int reservations_show(struct seq_file *s, void *p) -{ - struct uwb_rc *rc = s->private; - struct uwb_rsv *rsv; - - mutex_lock(&rc->rsvs_mutex); - - list_for_each_entry(rsv, &rc->reservations, rc_node) { - struct uwb_dev_addr devaddr; - char owner[UWB_ADDR_STRSIZE], target[UWB_ADDR_STRSIZE]; - bool is_owner; - - uwb_dev_addr_print(owner, sizeof(owner), &rsv->owner->dev_addr); - if (rsv->target.type == UWB_RSV_TARGET_DEV) { - devaddr = rsv->target.dev->dev_addr; - is_owner = &rc->uwb_dev == rsv->owner; - } else { - devaddr = rsv->target.devaddr; - is_owner = true; - } - uwb_dev_addr_print(target, sizeof(target), &devaddr); - - seq_printf(s, "%c %s -> %s: %s\n", - is_owner ? 'O' : 'T', - owner, target, uwb_rsv_state_str(rsv->state)); - seq_printf(s, " stream: %d type: %s\n", - rsv->stream, uwb_rsv_type_str(rsv->type)); - seq_printf(s, " %*pb\n", UWB_NUM_MAS, rsv->mas.bm); - } - - mutex_unlock(&rc->rsvs_mutex); - - return 0; -} -DEFINE_SHOW_ATTRIBUTE(reservations); - -static int drp_avail_show(struct seq_file *s, void *p) -{ - struct uwb_rc *rc = s->private; - - seq_printf(s, "global: %*pb\n", UWB_NUM_MAS, rc->drp_avail.global); - seq_printf(s, "local: %*pb\n", UWB_NUM_MAS, rc->drp_avail.local); - seq_printf(s, "pending: %*pb\n", UWB_NUM_MAS, rc->drp_avail.pending); - - return 0; -} -DEFINE_SHOW_ATTRIBUTE(drp_avail); - -static void uwb_dbg_channel_changed(struct uwb_pal *pal, int channel) -{ - struct device *dev = &pal->rc->uwb_dev.dev; - - if (channel > 0) - dev_info(dev, "debug: channel %d started\n", channel); - else - dev_info(dev, "debug: channel stopped\n"); -} - -static void uwb_dbg_new_rsv(struct uwb_pal *pal, struct uwb_rsv *rsv) -{ - struct uwb_dbg *dbg = container_of(pal, struct uwb_dbg, pal); - - if (dbg->accept) { - spin_lock(&dbg->list_lock); - list_add_tail(&rsv->pal_node, &dbg->rsvs); - spin_unlock(&dbg->list_lock); - uwb_rsv_accept(rsv, uwb_dbg_rsv_cb, dbg); - } -} - -/** - * uwb_dbg_add_rc - add a debug interface for a radio controller - * @rc: the radio controller - */ -void uwb_dbg_add_rc(struct uwb_rc *rc) -{ - rc->dbg = kzalloc(sizeof(struct uwb_dbg), GFP_KERNEL); - if (rc->dbg == NULL) - return; - - INIT_LIST_HEAD(&rc->dbg->rsvs); - spin_lock_init(&(rc->dbg)->list_lock); - - uwb_pal_init(&rc->dbg->pal); - rc->dbg->pal.rc = rc; - rc->dbg->pal.channel_changed = uwb_dbg_channel_changed; - rc->dbg->pal.new_rsv = uwb_dbg_new_rsv; - uwb_pal_register(&rc->dbg->pal); - - if (root_dir) { - rc->dbg->root_d = debugfs_create_dir(dev_name(&rc->uwb_dev.dev), - root_dir); - rc->dbg->command_f = debugfs_create_file("command", 0200, - rc->dbg->root_d, rc, - &command_fops); - rc->dbg->reservations_f = debugfs_create_file("reservations", 0444, - rc->dbg->root_d, rc, - &reservations_fops); - rc->dbg->accept_f = debugfs_create_bool("accept", 0644, - rc->dbg->root_d, - &rc->dbg->accept); - rc->dbg->drp_avail_f = debugfs_create_file("drp_avail", 0444, - rc->dbg->root_d, rc, - &drp_avail_fops); - } -} - -/** - * uwb_dbg_del_rc - remove a radio controller's debug interface - * @rc: the radio controller - */ -void uwb_dbg_del_rc(struct uwb_rc *rc) -{ - struct uwb_rsv *rsv, *t; - - if (rc->dbg == NULL) - return; - - list_for_each_entry_safe(rsv, t, &rc->dbg->rsvs, pal_node) { - uwb_rsv_terminate(rsv); - } - - uwb_pal_unregister(&rc->dbg->pal); - - if (root_dir) { - debugfs_remove(rc->dbg->drp_avail_f); - debugfs_remove(rc->dbg->accept_f); - debugfs_remove(rc->dbg->reservations_f); - debugfs_remove(rc->dbg->command_f); - debugfs_remove(rc->dbg->root_d); - } -} - -/** - * uwb_dbg_exit - initialize the debug interface sub-module - */ -void uwb_dbg_init(void) -{ - root_dir = debugfs_create_dir("uwb", NULL); -} - -/** - * uwb_dbg_exit - clean-up the debug interface sub-module - */ -void uwb_dbg_exit(void) -{ - debugfs_remove(root_dir); -} - -/** - * uwb_dbg_create_pal_dir - create a debugfs directory for a PAL - * @pal: The PAL. - */ -struct dentry *uwb_dbg_create_pal_dir(struct uwb_pal *pal) -{ - struct uwb_rc *rc = pal->rc; - - if (root_dir && rc->dbg && rc->dbg->root_d && pal->name) - return debugfs_create_dir(pal->name, rc->dbg->root_d); - return NULL; -} |