// SPDX-License-Identifier: GPL-2.0
/*
* Thunderbolt driver - switch/port utility functions
*
* Copyright (c) 2014 Andreas Noever <andreas.noever@gmail.com>
* Copyright (C) 2018, Intel Corporation
*/
#include <linux/delay.h>
#include <linux/idr.h>
#include <linux/nvmem-provider.h>
#include <linux/pm_runtime.h>
#include <linux/sched/signal.h>
#include <linux/sizes.h>
#include <linux/slab.h>
#include <linux/vmalloc.h>
#include "tb.h"
/* Switch NVM support */
#define NVM_DEVID 0x05
#define NVM_VERSION 0x08
#define NVM_CSS 0x10
#define NVM_FLASH_SIZE 0x45
#define NVM_MIN_SIZE SZ_32K
#define NVM_MAX_SIZE SZ_512K
static DEFINE_IDA(nvm_ida);
struct nvm_auth_status {
struct list_head list;
uuid_t uuid;
u32 status;
};
/*
* Hold NVM authentication failure status per switch This information
* needs to stay around even when the switch gets power cycled so we
* keep it separately.
*/
static LIST_HEAD(nvm_auth_status_cache);
static DEFINE_MUTEX(nvm_auth_status_lock);
static struct nvm_auth_status *__nvm_get_auth_status(const struct tb_switch *sw)
{
struct nvm_auth_status *st;
list_for_each_entry(st, &nvm_auth_status_cache, list) {
if (uuid_equal(&st->uuid, sw->uuid))
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