forked from luck/tmp_suning_uos_patched
a1d001e26d
Export the two zcrypt device driver functions zcrypt_send_cprb and zcrypt_device_status_mask to be useable for other kernel code. Signed-off-by: Harald Freudenberger <freude@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
1497 lines
38 KiB
C
1497 lines
38 KiB
C
/*
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* zcrypt 2.1.0
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*
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* Copyright IBM Corp. 2001, 2012
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* Author(s): Robert Burroughs
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* Eric Rossman (edrossma@us.ibm.com)
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* Cornelia Huck <cornelia.huck@de.ibm.com>
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*
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* Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com)
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* Major cleanup & driver split: Martin Schwidefsky <schwidefsky@de.ibm.com>
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* Ralph Wuerthner <rwuerthn@de.ibm.com>
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* MSGTYPE restruct: Holger Dengler <hd@linux.vnet.ibm.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/interrupt.h>
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#include <linux/miscdevice.h>
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#include <linux/fs.h>
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#include <linux/proc_fs.h>
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#include <linux/seq_file.h>
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#include <linux/compat.h>
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#include <linux/slab.h>
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#include <linux/atomic.h>
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#include <linux/uaccess.h>
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#include <linux/hw_random.h>
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#include <linux/debugfs.h>
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#include <asm/debug.h>
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#define CREATE_TRACE_POINTS
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#include <asm/trace/zcrypt.h>
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#include "zcrypt_api.h"
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#include "zcrypt_debug.h"
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#include "zcrypt_msgtype6.h"
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#include "zcrypt_msgtype50.h"
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/*
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* Module description.
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*/
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MODULE_AUTHOR("IBM Corporation");
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MODULE_DESCRIPTION("Cryptographic Coprocessor interface, " \
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"Copyright IBM Corp. 2001, 2012");
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MODULE_LICENSE("GPL");
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/*
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* zcrypt tracepoint functions
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*/
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EXPORT_TRACEPOINT_SYMBOL(s390_zcrypt_req);
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EXPORT_TRACEPOINT_SYMBOL(s390_zcrypt_rep);
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static int zcrypt_hwrng_seed = 1;
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module_param_named(hwrng_seed, zcrypt_hwrng_seed, int, S_IRUSR|S_IRGRP);
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MODULE_PARM_DESC(hwrng_seed, "Turn on/off hwrng auto seed, default is 1 (on).");
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DEFINE_SPINLOCK(zcrypt_list_lock);
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LIST_HEAD(zcrypt_card_list);
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int zcrypt_device_count;
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static atomic_t zcrypt_open_count = ATOMIC_INIT(0);
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static atomic_t zcrypt_rescan_count = ATOMIC_INIT(0);
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atomic_t zcrypt_rescan_req = ATOMIC_INIT(0);
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EXPORT_SYMBOL(zcrypt_rescan_req);
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static LIST_HEAD(zcrypt_ops_list);
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/* Zcrypt related debug feature stuff. */
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debug_info_t *zcrypt_dbf_info;
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/**
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* Process a rescan of the transport layer.
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*
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* Returns 1, if the rescan has been processed, otherwise 0.
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*/
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static inline int zcrypt_process_rescan(void)
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{
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if (atomic_read(&zcrypt_rescan_req)) {
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atomic_set(&zcrypt_rescan_req, 0);
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atomic_inc(&zcrypt_rescan_count);
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ap_bus_force_rescan();
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ZCRYPT_DBF(DBF_INFO, "rescan count=%07d",
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atomic_inc_return(&zcrypt_rescan_count));
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return 1;
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}
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return 0;
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}
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void zcrypt_msgtype_register(struct zcrypt_ops *zops)
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{
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list_add_tail(&zops->list, &zcrypt_ops_list);
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}
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void zcrypt_msgtype_unregister(struct zcrypt_ops *zops)
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{
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list_del_init(&zops->list);
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}
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struct zcrypt_ops *zcrypt_msgtype(unsigned char *name, int variant)
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{
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struct zcrypt_ops *zops;
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list_for_each_entry(zops, &zcrypt_ops_list, list)
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if ((zops->variant == variant) &&
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(!strncmp(zops->name, name, sizeof(zops->name))))
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return zops;
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return NULL;
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}
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EXPORT_SYMBOL(zcrypt_msgtype);
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/**
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* zcrypt_read (): Not supported beyond zcrypt 1.3.1.
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*
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* This function is not supported beyond zcrypt 1.3.1.
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*/
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static ssize_t zcrypt_read(struct file *filp, char __user *buf,
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size_t count, loff_t *f_pos)
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{
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return -EPERM;
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}
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/**
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* zcrypt_write(): Not allowed.
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*
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* Write is is not allowed
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*/
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static ssize_t zcrypt_write(struct file *filp, const char __user *buf,
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size_t count, loff_t *f_pos)
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{
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return -EPERM;
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}
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/**
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* zcrypt_open(): Count number of users.
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*
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* Device open function to count number of users.
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*/
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static int zcrypt_open(struct inode *inode, struct file *filp)
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{
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atomic_inc(&zcrypt_open_count);
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return nonseekable_open(inode, filp);
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}
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/**
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* zcrypt_release(): Count number of users.
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*
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* Device close function to count number of users.
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*/
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static int zcrypt_release(struct inode *inode, struct file *filp)
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{
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atomic_dec(&zcrypt_open_count);
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return 0;
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}
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static inline struct zcrypt_queue *zcrypt_pick_queue(struct zcrypt_card *zc,
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struct zcrypt_queue *zq,
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unsigned int weight)
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{
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if (!zq || !try_module_get(zq->queue->ap_dev.drv->driver.owner))
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return NULL;
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zcrypt_queue_get(zq);
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get_device(&zq->queue->ap_dev.device);
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atomic_add(weight, &zc->load);
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atomic_add(weight, &zq->load);
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zq->request_count++;
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return zq;
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}
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static inline void zcrypt_drop_queue(struct zcrypt_card *zc,
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struct zcrypt_queue *zq,
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unsigned int weight)
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{
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struct module *mod = zq->queue->ap_dev.drv->driver.owner;
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zq->request_count--;
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atomic_sub(weight, &zc->load);
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atomic_sub(weight, &zq->load);
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put_device(&zq->queue->ap_dev.device);
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zcrypt_queue_put(zq);
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module_put(mod);
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}
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static inline bool zcrypt_card_compare(struct zcrypt_card *zc,
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struct zcrypt_card *pref_zc,
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unsigned weight, unsigned pref_weight)
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{
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if (!pref_zc)
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return false;
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weight += atomic_read(&zc->load);
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pref_weight += atomic_read(&pref_zc->load);
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if (weight == pref_weight)
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return atomic_read(&zc->card->total_request_count) >
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atomic_read(&pref_zc->card->total_request_count);
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return weight > pref_weight;
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}
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static inline bool zcrypt_queue_compare(struct zcrypt_queue *zq,
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struct zcrypt_queue *pref_zq,
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unsigned weight, unsigned pref_weight)
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{
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if (!pref_zq)
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return false;
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weight += atomic_read(&zq->load);
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pref_weight += atomic_read(&pref_zq->load);
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if (weight == pref_weight)
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return &zq->queue->total_request_count >
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&pref_zq->queue->total_request_count;
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return weight > pref_weight;
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}
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/*
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* zcrypt ioctls.
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*/
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static long zcrypt_rsa_modexpo(struct ica_rsa_modexpo *mex)
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{
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struct zcrypt_card *zc, *pref_zc;
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struct zcrypt_queue *zq, *pref_zq;
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unsigned int weight, pref_weight;
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unsigned int func_code;
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int qid = 0, rc = -ENODEV;
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trace_s390_zcrypt_req(mex, TP_ICARSAMODEXPO);
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if (mex->outputdatalength < mex->inputdatalength) {
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rc = -EINVAL;
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goto out;
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}
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/*
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* As long as outputdatalength is big enough, we can set the
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* outputdatalength equal to the inputdatalength, since that is the
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* number of bytes we will copy in any case
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*/
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mex->outputdatalength = mex->inputdatalength;
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rc = get_rsa_modex_fc(mex, &func_code);
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if (rc)
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goto out;
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pref_zc = NULL;
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pref_zq = NULL;
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spin_lock(&zcrypt_list_lock);
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for_each_zcrypt_card(zc) {
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/* Check for online accelarator and CCA cards */
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if (!zc->online || !(zc->card->functions & 0x18000000))
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continue;
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/* Check for size limits */
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if (zc->min_mod_size > mex->inputdatalength ||
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zc->max_mod_size < mex->inputdatalength)
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continue;
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/* get weight index of the card device */
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weight = zc->speed_rating[func_code];
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if (zcrypt_card_compare(zc, pref_zc, weight, pref_weight))
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continue;
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for_each_zcrypt_queue(zq, zc) {
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/* check if device is online and eligible */
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if (!zq->online || !zq->ops->rsa_modexpo)
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continue;
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if (zcrypt_queue_compare(zq, pref_zq,
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weight, pref_weight))
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continue;
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pref_zc = zc;
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pref_zq = zq;
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pref_weight = weight;
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}
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}
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pref_zq = zcrypt_pick_queue(pref_zc, pref_zq, weight);
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spin_unlock(&zcrypt_list_lock);
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if (!pref_zq) {
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rc = -ENODEV;
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goto out;
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}
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qid = pref_zq->queue->qid;
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rc = pref_zq->ops->rsa_modexpo(pref_zq, mex);
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spin_lock(&zcrypt_list_lock);
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zcrypt_drop_queue(pref_zc, pref_zq, weight);
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spin_unlock(&zcrypt_list_lock);
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out:
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trace_s390_zcrypt_rep(mex, func_code, rc,
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AP_QID_CARD(qid), AP_QID_QUEUE(qid));
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return rc;
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}
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static long zcrypt_rsa_crt(struct ica_rsa_modexpo_crt *crt)
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{
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struct zcrypt_card *zc, *pref_zc;
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struct zcrypt_queue *zq, *pref_zq;
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unsigned int weight, pref_weight;
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unsigned int func_code;
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int qid = 0, rc = -ENODEV;
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trace_s390_zcrypt_req(crt, TP_ICARSACRT);
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if (crt->outputdatalength < crt->inputdatalength) {
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rc = -EINVAL;
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goto out;
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}
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/*
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* As long as outputdatalength is big enough, we can set the
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* outputdatalength equal to the inputdatalength, since that is the
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* number of bytes we will copy in any case
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*/
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crt->outputdatalength = crt->inputdatalength;
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rc = get_rsa_crt_fc(crt, &func_code);
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if (rc)
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goto out;
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pref_zc = NULL;
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pref_zq = NULL;
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spin_lock(&zcrypt_list_lock);
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for_each_zcrypt_card(zc) {
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/* Check for online accelarator and CCA cards */
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if (!zc->online || !(zc->card->functions & 0x18000000))
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continue;
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/* Check for size limits */
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if (zc->min_mod_size > crt->inputdatalength ||
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zc->max_mod_size < crt->inputdatalength)
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continue;
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/* get weight index of the card device */
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weight = zc->speed_rating[func_code];
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if (zcrypt_card_compare(zc, pref_zc, weight, pref_weight))
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continue;
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for_each_zcrypt_queue(zq, zc) {
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/* check if device is online and eligible */
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if (!zq->online || !zq->ops->rsa_modexpo_crt)
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continue;
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if (zcrypt_queue_compare(zq, pref_zq,
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weight, pref_weight))
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continue;
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pref_zc = zc;
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pref_zq = zq;
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pref_weight = weight;
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}
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}
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pref_zq = zcrypt_pick_queue(pref_zc, pref_zq, weight);
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spin_unlock(&zcrypt_list_lock);
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if (!pref_zq) {
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rc = -ENODEV;
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goto out;
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}
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qid = pref_zq->queue->qid;
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rc = pref_zq->ops->rsa_modexpo_crt(pref_zq, crt);
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spin_lock(&zcrypt_list_lock);
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zcrypt_drop_queue(pref_zc, pref_zq, weight);
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spin_unlock(&zcrypt_list_lock);
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out:
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trace_s390_zcrypt_rep(crt, func_code, rc,
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AP_QID_CARD(qid), AP_QID_QUEUE(qid));
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return rc;
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}
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long zcrypt_send_cprb(struct ica_xcRB *xcRB)
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{
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struct zcrypt_card *zc, *pref_zc;
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struct zcrypt_queue *zq, *pref_zq;
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struct ap_message ap_msg;
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unsigned int weight, pref_weight;
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unsigned int func_code;
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unsigned short *domain;
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int qid = 0, rc = -ENODEV;
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trace_s390_zcrypt_req(xcRB, TB_ZSECSENDCPRB);
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rc = get_cprb_fc(xcRB, &ap_msg, &func_code, &domain);
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if (rc)
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goto out;
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pref_zc = NULL;
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pref_zq = NULL;
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spin_lock(&zcrypt_list_lock);
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for_each_zcrypt_card(zc) {
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/* Check for online CCA cards */
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if (!zc->online || !(zc->card->functions & 0x10000000))
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continue;
|
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/* Check for user selected CCA card */
|
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if (xcRB->user_defined != AUTOSELECT &&
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xcRB->user_defined != zc->card->id)
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continue;
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/* get weight index of the card device */
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weight = speed_idx_cca(func_code) * zc->speed_rating[SECKEY];
|
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if (zcrypt_card_compare(zc, pref_zc, weight, pref_weight))
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continue;
|
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for_each_zcrypt_queue(zq, zc) {
|
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/* check if device is online and eligible */
|
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if (!zq->online ||
|
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!zq->ops->send_cprb ||
|
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((*domain != (unsigned short) AUTOSELECT) &&
|
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(*domain != AP_QID_QUEUE(zq->queue->qid))))
|
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continue;
|
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if (zcrypt_queue_compare(zq, pref_zq,
|
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weight, pref_weight))
|
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continue;
|
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pref_zc = zc;
|
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pref_zq = zq;
|
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pref_weight = weight;
|
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}
|
|
}
|
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pref_zq = zcrypt_pick_queue(pref_zc, pref_zq, weight);
|
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spin_unlock(&zcrypt_list_lock);
|
|
|
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if (!pref_zq) {
|
|
rc = -ENODEV;
|
|
goto out;
|
|
}
|
|
|
|
/* in case of auto select, provide the correct domain */
|
|
qid = pref_zq->queue->qid;
|
|
if (*domain == (unsigned short) AUTOSELECT)
|
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*domain = AP_QID_QUEUE(qid);
|
|
|
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rc = pref_zq->ops->send_cprb(pref_zq, xcRB, &ap_msg);
|
|
|
|
spin_lock(&zcrypt_list_lock);
|
|
zcrypt_drop_queue(pref_zc, pref_zq, weight);
|
|
spin_unlock(&zcrypt_list_lock);
|
|
|
|
out:
|
|
trace_s390_zcrypt_rep(xcRB, func_code, rc,
|
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AP_QID_CARD(qid), AP_QID_QUEUE(qid));
|
|
return rc;
|
|
}
|
|
EXPORT_SYMBOL(zcrypt_send_cprb);
|
|
|
|
static bool is_desired_ep11_card(unsigned int dev_id,
|
|
unsigned short target_num,
|
|
struct ep11_target_dev *targets)
|
|
{
|
|
while (target_num-- > 0) {
|
|
if (dev_id == targets->ap_id)
|
|
return true;
|
|
targets++;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static bool is_desired_ep11_queue(unsigned int dev_qid,
|
|
unsigned short target_num,
|
|
struct ep11_target_dev *targets)
|
|
{
|
|
while (target_num-- > 0) {
|
|
if (AP_MKQID(targets->ap_id, targets->dom_id) == dev_qid)
|
|
return true;
|
|
targets++;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static long zcrypt_send_ep11_cprb(struct ep11_urb *xcrb)
|
|
{
|
|
struct zcrypt_card *zc, *pref_zc;
|
|
struct zcrypt_queue *zq, *pref_zq;
|
|
struct ep11_target_dev *targets;
|
|
unsigned short target_num;
|
|
unsigned int weight, pref_weight;
|
|
unsigned int func_code;
|
|
struct ap_message ap_msg;
|
|
int qid = 0, rc = -ENODEV;
|
|
|
|
trace_s390_zcrypt_req(xcrb, TP_ZSENDEP11CPRB);
|
|
|
|
target_num = (unsigned short) xcrb->targets_num;
|
|
|
|
/* empty list indicates autoselect (all available targets) */
|
|
targets = NULL;
|
|
if (target_num != 0) {
|
|
struct ep11_target_dev __user *uptr;
|
|
|
|
targets = kcalloc(target_num, sizeof(*targets), GFP_KERNEL);
|
|
if (!targets) {
|
|
rc = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
uptr = (struct ep11_target_dev __force __user *) xcrb->targets;
|
|
if (copy_from_user(targets, uptr,
|
|
target_num * sizeof(*targets))) {
|
|
rc = -EFAULT;
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
rc = get_ep11cprb_fc(xcrb, &ap_msg, &func_code);
|
|
if (rc)
|
|
goto out_free;
|
|
|
|
pref_zc = NULL;
|
|
pref_zq = NULL;
|
|
spin_lock(&zcrypt_list_lock);
|
|
for_each_zcrypt_card(zc) {
|
|
/* Check for online EP11 cards */
|
|
if (!zc->online || !(zc->card->functions & 0x04000000))
|
|
continue;
|
|
/* Check for user selected EP11 card */
|
|
if (targets &&
|
|
!is_desired_ep11_card(zc->card->id, target_num, targets))
|
|
continue;
|
|
/* get weight index of the card device */
|
|
weight = speed_idx_ep11(func_code) * zc->speed_rating[SECKEY];
|
|
if (zcrypt_card_compare(zc, pref_zc, weight, pref_weight))
|
|
continue;
|
|
for_each_zcrypt_queue(zq, zc) {
|
|
/* check if device is online and eligible */
|
|
if (!zq->online ||
|
|
!zq->ops->send_ep11_cprb ||
|
|
(targets &&
|
|
!is_desired_ep11_queue(zq->queue->qid,
|
|
target_num, targets)))
|
|
continue;
|
|
if (zcrypt_queue_compare(zq, pref_zq,
|
|
weight, pref_weight))
|
|
continue;
|
|
pref_zc = zc;
|
|
pref_zq = zq;
|
|
pref_weight = weight;
|
|
}
|
|
}
|
|
pref_zq = zcrypt_pick_queue(pref_zc, pref_zq, weight);
|
|
spin_unlock(&zcrypt_list_lock);
|
|
|
|
if (!pref_zq) {
|
|
rc = -ENODEV;
|
|
goto out_free;
|
|
}
|
|
|
|
qid = pref_zq->queue->qid;
|
|
rc = pref_zq->ops->send_ep11_cprb(pref_zq, xcrb, &ap_msg);
|
|
|
|
spin_lock(&zcrypt_list_lock);
|
|
zcrypt_drop_queue(pref_zc, pref_zq, weight);
|
|
spin_unlock(&zcrypt_list_lock);
|
|
|
|
out_free:
|
|
kfree(targets);
|
|
out:
|
|
trace_s390_zcrypt_rep(xcrb, func_code, rc,
|
|
AP_QID_CARD(qid), AP_QID_QUEUE(qid));
|
|
return rc;
|
|
}
|
|
|
|
static long zcrypt_rng(char *buffer)
|
|
{
|
|
struct zcrypt_card *zc, *pref_zc;
|
|
struct zcrypt_queue *zq, *pref_zq;
|
|
unsigned int weight, pref_weight;
|
|
unsigned int func_code;
|
|
struct ap_message ap_msg;
|
|
unsigned int domain;
|
|
int qid = 0, rc = -ENODEV;
|
|
|
|
trace_s390_zcrypt_req(buffer, TP_HWRNGCPRB);
|
|
|
|
rc = get_rng_fc(&ap_msg, &func_code, &domain);
|
|
if (rc)
|
|
goto out;
|
|
|
|
pref_zc = NULL;
|
|
pref_zq = NULL;
|
|
spin_lock(&zcrypt_list_lock);
|
|
for_each_zcrypt_card(zc) {
|
|
/* Check for online CCA cards */
|
|
if (!zc->online || !(zc->card->functions & 0x10000000))
|
|
continue;
|
|
/* get weight index of the card device */
|
|
weight = zc->speed_rating[func_code];
|
|
if (zcrypt_card_compare(zc, pref_zc, weight, pref_weight))
|
|
continue;
|
|
for_each_zcrypt_queue(zq, zc) {
|
|
/* check if device is online and eligible */
|
|
if (!zq->online || !zq->ops->rng)
|
|
continue;
|
|
if (zcrypt_queue_compare(zq, pref_zq,
|
|
weight, pref_weight))
|
|
continue;
|
|
pref_zc = zc;
|
|
pref_zq = zq;
|
|
pref_weight = weight;
|
|
}
|
|
}
|
|
pref_zq = zcrypt_pick_queue(pref_zc, pref_zq, weight);
|
|
spin_unlock(&zcrypt_list_lock);
|
|
|
|
if (!pref_zq)
|
|
return -ENODEV;
|
|
|
|
qid = pref_zq->queue->qid;
|
|
rc = pref_zq->ops->rng(pref_zq, buffer, &ap_msg);
|
|
|
|
spin_lock(&zcrypt_list_lock);
|
|
zcrypt_drop_queue(pref_zc, pref_zq, weight);
|
|
spin_unlock(&zcrypt_list_lock);
|
|
|
|
out:
|
|
trace_s390_zcrypt_rep(buffer, func_code, rc,
|
|
AP_QID_CARD(qid), AP_QID_QUEUE(qid));
|
|
return rc;
|
|
}
|
|
|
|
void zcrypt_device_status_mask(struct zcrypt_device_matrix *matrix)
|
|
{
|
|
struct zcrypt_card *zc;
|
|
struct zcrypt_queue *zq;
|
|
struct zcrypt_device_status *stat;
|
|
|
|
memset(matrix, 0, sizeof(*matrix));
|
|
spin_lock(&zcrypt_list_lock);
|
|
for_each_zcrypt_card(zc) {
|
|
for_each_zcrypt_queue(zq, zc) {
|
|
stat = matrix->device;
|
|
stat += AP_QID_CARD(zq->queue->qid) * MAX_ZDEV_DOMAINS;
|
|
stat += AP_QID_QUEUE(zq->queue->qid);
|
|
stat->hwtype = zc->card->ap_dev.device_type;
|
|
stat->functions = zc->card->functions >> 26;
|
|
stat->qid = zq->queue->qid;
|
|
stat->online = zq->online ? 0x01 : 0x00;
|
|
}
|
|
}
|
|
spin_unlock(&zcrypt_list_lock);
|
|
}
|
|
EXPORT_SYMBOL(zcrypt_device_status_mask);
|
|
|
|
static void zcrypt_status_mask(char status[AP_DEVICES])
|
|
{
|
|
struct zcrypt_card *zc;
|
|
struct zcrypt_queue *zq;
|
|
|
|
memset(status, 0, sizeof(char) * AP_DEVICES);
|
|
spin_lock(&zcrypt_list_lock);
|
|
for_each_zcrypt_card(zc) {
|
|
for_each_zcrypt_queue(zq, zc) {
|
|
if (AP_QID_QUEUE(zq->queue->qid) != ap_domain_index)
|
|
continue;
|
|
status[AP_QID_CARD(zq->queue->qid)] =
|
|
zc->online ? zc->user_space_type : 0x0d;
|
|
}
|
|
}
|
|
spin_unlock(&zcrypt_list_lock);
|
|
}
|
|
|
|
static void zcrypt_qdepth_mask(char qdepth[AP_DEVICES])
|
|
{
|
|
struct zcrypt_card *zc;
|
|
struct zcrypt_queue *zq;
|
|
|
|
memset(qdepth, 0, sizeof(char) * AP_DEVICES);
|
|
spin_lock(&zcrypt_list_lock);
|
|
local_bh_disable();
|
|
for_each_zcrypt_card(zc) {
|
|
for_each_zcrypt_queue(zq, zc) {
|
|
if (AP_QID_QUEUE(zq->queue->qid) != ap_domain_index)
|
|
continue;
|
|
spin_lock(&zq->queue->lock);
|
|
qdepth[AP_QID_CARD(zq->queue->qid)] =
|
|
zq->queue->pendingq_count +
|
|
zq->queue->requestq_count;
|
|
spin_unlock(&zq->queue->lock);
|
|
}
|
|
}
|
|
local_bh_enable();
|
|
spin_unlock(&zcrypt_list_lock);
|
|
}
|
|
|
|
static void zcrypt_perdev_reqcnt(int reqcnt[AP_DEVICES])
|
|
{
|
|
struct zcrypt_card *zc;
|
|
struct zcrypt_queue *zq;
|
|
|
|
memset(reqcnt, 0, sizeof(int) * AP_DEVICES);
|
|
spin_lock(&zcrypt_list_lock);
|
|
local_bh_disable();
|
|
for_each_zcrypt_card(zc) {
|
|
for_each_zcrypt_queue(zq, zc) {
|
|
if (AP_QID_QUEUE(zq->queue->qid) != ap_domain_index)
|
|
continue;
|
|
spin_lock(&zq->queue->lock);
|
|
reqcnt[AP_QID_CARD(zq->queue->qid)] =
|
|
zq->queue->total_request_count;
|
|
spin_unlock(&zq->queue->lock);
|
|
}
|
|
}
|
|
local_bh_enable();
|
|
spin_unlock(&zcrypt_list_lock);
|
|
}
|
|
|
|
static int zcrypt_pendingq_count(void)
|
|
{
|
|
struct zcrypt_card *zc;
|
|
struct zcrypt_queue *zq;
|
|
int pendingq_count;
|
|
|
|
pendingq_count = 0;
|
|
spin_lock(&zcrypt_list_lock);
|
|
local_bh_disable();
|
|
for_each_zcrypt_card(zc) {
|
|
for_each_zcrypt_queue(zq, zc) {
|
|
if (AP_QID_QUEUE(zq->queue->qid) != ap_domain_index)
|
|
continue;
|
|
spin_lock(&zq->queue->lock);
|
|
pendingq_count += zq->queue->pendingq_count;
|
|
spin_unlock(&zq->queue->lock);
|
|
}
|
|
}
|
|
local_bh_enable();
|
|
spin_unlock(&zcrypt_list_lock);
|
|
return pendingq_count;
|
|
}
|
|
|
|
static int zcrypt_requestq_count(void)
|
|
{
|
|
struct zcrypt_card *zc;
|
|
struct zcrypt_queue *zq;
|
|
int requestq_count;
|
|
|
|
requestq_count = 0;
|
|
spin_lock(&zcrypt_list_lock);
|
|
local_bh_disable();
|
|
for_each_zcrypt_card(zc) {
|
|
for_each_zcrypt_queue(zq, zc) {
|
|
if (AP_QID_QUEUE(zq->queue->qid) != ap_domain_index)
|
|
continue;
|
|
spin_lock(&zq->queue->lock);
|
|
requestq_count += zq->queue->requestq_count;
|
|
spin_unlock(&zq->queue->lock);
|
|
}
|
|
}
|
|
local_bh_enable();
|
|
spin_unlock(&zcrypt_list_lock);
|
|
return requestq_count;
|
|
}
|
|
|
|
static int zcrypt_count_type(int type)
|
|
{
|
|
struct zcrypt_card *zc;
|
|
struct zcrypt_queue *zq;
|
|
int device_count;
|
|
|
|
device_count = 0;
|
|
spin_lock(&zcrypt_list_lock);
|
|
for_each_zcrypt_card(zc) {
|
|
if (zc->card->id != type)
|
|
continue;
|
|
for_each_zcrypt_queue(zq, zc) {
|
|
if (AP_QID_QUEUE(zq->queue->qid) != ap_domain_index)
|
|
continue;
|
|
device_count++;
|
|
}
|
|
}
|
|
spin_unlock(&zcrypt_list_lock);
|
|
return device_count;
|
|
}
|
|
|
|
/**
|
|
* zcrypt_ica_status(): Old, depracted combi status call.
|
|
*
|
|
* Old, deprecated combi status call.
|
|
*/
|
|
static long zcrypt_ica_status(struct file *filp, unsigned long arg)
|
|
{
|
|
struct ica_z90_status *pstat;
|
|
int ret;
|
|
|
|
pstat = kzalloc(sizeof(*pstat), GFP_KERNEL);
|
|
if (!pstat)
|
|
return -ENOMEM;
|
|
pstat->totalcount = zcrypt_device_count;
|
|
pstat->leedslitecount = zcrypt_count_type(ZCRYPT_PCICA);
|
|
pstat->leeds2count = zcrypt_count_type(ZCRYPT_PCICC);
|
|
pstat->requestqWaitCount = zcrypt_requestq_count();
|
|
pstat->pendingqWaitCount = zcrypt_pendingq_count();
|
|
pstat->totalOpenCount = atomic_read(&zcrypt_open_count);
|
|
pstat->cryptoDomain = ap_domain_index;
|
|
zcrypt_status_mask(pstat->status);
|
|
zcrypt_qdepth_mask(pstat->qdepth);
|
|
ret = 0;
|
|
if (copy_to_user((void __user *) arg, pstat, sizeof(*pstat)))
|
|
ret = -EFAULT;
|
|
kfree(pstat);
|
|
return ret;
|
|
}
|
|
|
|
static long zcrypt_unlocked_ioctl(struct file *filp, unsigned int cmd,
|
|
unsigned long arg)
|
|
{
|
|
int rc;
|
|
|
|
switch (cmd) {
|
|
case ICARSAMODEXPO: {
|
|
struct ica_rsa_modexpo __user *umex = (void __user *) arg;
|
|
struct ica_rsa_modexpo mex;
|
|
if (copy_from_user(&mex, umex, sizeof(mex)))
|
|
return -EFAULT;
|
|
do {
|
|
rc = zcrypt_rsa_modexpo(&mex);
|
|
} while (rc == -EAGAIN);
|
|
/* on failure: retry once again after a requested rescan */
|
|
if ((rc == -ENODEV) && (zcrypt_process_rescan()))
|
|
do {
|
|
rc = zcrypt_rsa_modexpo(&mex);
|
|
} while (rc == -EAGAIN);
|
|
if (rc)
|
|
return rc;
|
|
return put_user(mex.outputdatalength, &umex->outputdatalength);
|
|
}
|
|
case ICARSACRT: {
|
|
struct ica_rsa_modexpo_crt __user *ucrt = (void __user *) arg;
|
|
struct ica_rsa_modexpo_crt crt;
|
|
if (copy_from_user(&crt, ucrt, sizeof(crt)))
|
|
return -EFAULT;
|
|
do {
|
|
rc = zcrypt_rsa_crt(&crt);
|
|
} while (rc == -EAGAIN);
|
|
/* on failure: retry once again after a requested rescan */
|
|
if ((rc == -ENODEV) && (zcrypt_process_rescan()))
|
|
do {
|
|
rc = zcrypt_rsa_crt(&crt);
|
|
} while (rc == -EAGAIN);
|
|
if (rc)
|
|
return rc;
|
|
return put_user(crt.outputdatalength, &ucrt->outputdatalength);
|
|
}
|
|
case ZSECSENDCPRB: {
|
|
struct ica_xcRB __user *uxcRB = (void __user *) arg;
|
|
struct ica_xcRB xcRB;
|
|
if (copy_from_user(&xcRB, uxcRB, sizeof(xcRB)))
|
|
return -EFAULT;
|
|
do {
|
|
rc = zcrypt_send_cprb(&xcRB);
|
|
} while (rc == -EAGAIN);
|
|
/* on failure: retry once again after a requested rescan */
|
|
if ((rc == -ENODEV) && (zcrypt_process_rescan()))
|
|
do {
|
|
rc = zcrypt_send_cprb(&xcRB);
|
|
} while (rc == -EAGAIN);
|
|
if (copy_to_user(uxcRB, &xcRB, sizeof(xcRB)))
|
|
return -EFAULT;
|
|
return rc;
|
|
}
|
|
case ZSENDEP11CPRB: {
|
|
struct ep11_urb __user *uxcrb = (void __user *)arg;
|
|
struct ep11_urb xcrb;
|
|
if (copy_from_user(&xcrb, uxcrb, sizeof(xcrb)))
|
|
return -EFAULT;
|
|
do {
|
|
rc = zcrypt_send_ep11_cprb(&xcrb);
|
|
} while (rc == -EAGAIN);
|
|
/* on failure: retry once again after a requested rescan */
|
|
if ((rc == -ENODEV) && (zcrypt_process_rescan()))
|
|
do {
|
|
rc = zcrypt_send_ep11_cprb(&xcrb);
|
|
} while (rc == -EAGAIN);
|
|
if (copy_to_user(uxcrb, &xcrb, sizeof(xcrb)))
|
|
return -EFAULT;
|
|
return rc;
|
|
}
|
|
case ZDEVICESTATUS: {
|
|
struct zcrypt_device_matrix *device_status;
|
|
|
|
device_status = kzalloc(sizeof(struct zcrypt_device_matrix),
|
|
GFP_KERNEL);
|
|
if (!device_status)
|
|
return -ENOMEM;
|
|
|
|
zcrypt_device_status_mask(device_status);
|
|
|
|
if (copy_to_user((char __user *) arg, device_status,
|
|
sizeof(struct zcrypt_device_matrix))) {
|
|
kfree(device_status);
|
|
return -EFAULT;
|
|
}
|
|
|
|
kfree(device_status);
|
|
return 0;
|
|
}
|
|
case Z90STAT_STATUS_MASK: {
|
|
char status[AP_DEVICES];
|
|
zcrypt_status_mask(status);
|
|
if (copy_to_user((char __user *) arg, status,
|
|
sizeof(char) * AP_DEVICES))
|
|
return -EFAULT;
|
|
return 0;
|
|
}
|
|
case Z90STAT_QDEPTH_MASK: {
|
|
char qdepth[AP_DEVICES];
|
|
zcrypt_qdepth_mask(qdepth);
|
|
if (copy_to_user((char __user *) arg, qdepth,
|
|
sizeof(char) * AP_DEVICES))
|
|
return -EFAULT;
|
|
return 0;
|
|
}
|
|
case Z90STAT_PERDEV_REQCNT: {
|
|
int reqcnt[AP_DEVICES];
|
|
zcrypt_perdev_reqcnt(reqcnt);
|
|
if (copy_to_user((int __user *) arg, reqcnt,
|
|
sizeof(int) * AP_DEVICES))
|
|
return -EFAULT;
|
|
return 0;
|
|
}
|
|
case Z90STAT_REQUESTQ_COUNT:
|
|
return put_user(zcrypt_requestq_count(), (int __user *) arg);
|
|
case Z90STAT_PENDINGQ_COUNT:
|
|
return put_user(zcrypt_pendingq_count(), (int __user *) arg);
|
|
case Z90STAT_TOTALOPEN_COUNT:
|
|
return put_user(atomic_read(&zcrypt_open_count),
|
|
(int __user *) arg);
|
|
case Z90STAT_DOMAIN_INDEX:
|
|
return put_user(ap_domain_index, (int __user *) arg);
|
|
/*
|
|
* Deprecated ioctls. Don't add another device count ioctl,
|
|
* you can count them yourself in the user space with the
|
|
* output of the Z90STAT_STATUS_MASK ioctl.
|
|
*/
|
|
case ICAZ90STATUS:
|
|
return zcrypt_ica_status(filp, arg);
|
|
case Z90STAT_TOTALCOUNT:
|
|
return put_user(zcrypt_device_count, (int __user *) arg);
|
|
case Z90STAT_PCICACOUNT:
|
|
return put_user(zcrypt_count_type(ZCRYPT_PCICA),
|
|
(int __user *) arg);
|
|
case Z90STAT_PCICCCOUNT:
|
|
return put_user(zcrypt_count_type(ZCRYPT_PCICC),
|
|
(int __user *) arg);
|
|
case Z90STAT_PCIXCCMCL2COUNT:
|
|
return put_user(zcrypt_count_type(ZCRYPT_PCIXCC_MCL2),
|
|
(int __user *) arg);
|
|
case Z90STAT_PCIXCCMCL3COUNT:
|
|
return put_user(zcrypt_count_type(ZCRYPT_PCIXCC_MCL3),
|
|
(int __user *) arg);
|
|
case Z90STAT_PCIXCCCOUNT:
|
|
return put_user(zcrypt_count_type(ZCRYPT_PCIXCC_MCL2) +
|
|
zcrypt_count_type(ZCRYPT_PCIXCC_MCL3),
|
|
(int __user *) arg);
|
|
case Z90STAT_CEX2CCOUNT:
|
|
return put_user(zcrypt_count_type(ZCRYPT_CEX2C),
|
|
(int __user *) arg);
|
|
case Z90STAT_CEX2ACOUNT:
|
|
return put_user(zcrypt_count_type(ZCRYPT_CEX2A),
|
|
(int __user *) arg);
|
|
default:
|
|
/* unknown ioctl number */
|
|
return -ENOIOCTLCMD;
|
|
}
|
|
}
|
|
|
|
#ifdef CONFIG_COMPAT
|
|
/*
|
|
* ioctl32 conversion routines
|
|
*/
|
|
struct compat_ica_rsa_modexpo {
|
|
compat_uptr_t inputdata;
|
|
unsigned int inputdatalength;
|
|
compat_uptr_t outputdata;
|
|
unsigned int outputdatalength;
|
|
compat_uptr_t b_key;
|
|
compat_uptr_t n_modulus;
|
|
};
|
|
|
|
static long trans_modexpo32(struct file *filp, unsigned int cmd,
|
|
unsigned long arg)
|
|
{
|
|
struct compat_ica_rsa_modexpo __user *umex32 = compat_ptr(arg);
|
|
struct compat_ica_rsa_modexpo mex32;
|
|
struct ica_rsa_modexpo mex64;
|
|
long rc;
|
|
|
|
if (copy_from_user(&mex32, umex32, sizeof(mex32)))
|
|
return -EFAULT;
|
|
mex64.inputdata = compat_ptr(mex32.inputdata);
|
|
mex64.inputdatalength = mex32.inputdatalength;
|
|
mex64.outputdata = compat_ptr(mex32.outputdata);
|
|
mex64.outputdatalength = mex32.outputdatalength;
|
|
mex64.b_key = compat_ptr(mex32.b_key);
|
|
mex64.n_modulus = compat_ptr(mex32.n_modulus);
|
|
do {
|
|
rc = zcrypt_rsa_modexpo(&mex64);
|
|
} while (rc == -EAGAIN);
|
|
/* on failure: retry once again after a requested rescan */
|
|
if ((rc == -ENODEV) && (zcrypt_process_rescan()))
|
|
do {
|
|
rc = zcrypt_rsa_modexpo(&mex64);
|
|
} while (rc == -EAGAIN);
|
|
if (rc)
|
|
return rc;
|
|
return put_user(mex64.outputdatalength,
|
|
&umex32->outputdatalength);
|
|
}
|
|
|
|
struct compat_ica_rsa_modexpo_crt {
|
|
compat_uptr_t inputdata;
|
|
unsigned int inputdatalength;
|
|
compat_uptr_t outputdata;
|
|
unsigned int outputdatalength;
|
|
compat_uptr_t bp_key;
|
|
compat_uptr_t bq_key;
|
|
compat_uptr_t np_prime;
|
|
compat_uptr_t nq_prime;
|
|
compat_uptr_t u_mult_inv;
|
|
};
|
|
|
|
static long trans_modexpo_crt32(struct file *filp, unsigned int cmd,
|
|
unsigned long arg)
|
|
{
|
|
struct compat_ica_rsa_modexpo_crt __user *ucrt32 = compat_ptr(arg);
|
|
struct compat_ica_rsa_modexpo_crt crt32;
|
|
struct ica_rsa_modexpo_crt crt64;
|
|
long rc;
|
|
|
|
if (copy_from_user(&crt32, ucrt32, sizeof(crt32)))
|
|
return -EFAULT;
|
|
crt64.inputdata = compat_ptr(crt32.inputdata);
|
|
crt64.inputdatalength = crt32.inputdatalength;
|
|
crt64.outputdata= compat_ptr(crt32.outputdata);
|
|
crt64.outputdatalength = crt32.outputdatalength;
|
|
crt64.bp_key = compat_ptr(crt32.bp_key);
|
|
crt64.bq_key = compat_ptr(crt32.bq_key);
|
|
crt64.np_prime = compat_ptr(crt32.np_prime);
|
|
crt64.nq_prime = compat_ptr(crt32.nq_prime);
|
|
crt64.u_mult_inv = compat_ptr(crt32.u_mult_inv);
|
|
do {
|
|
rc = zcrypt_rsa_crt(&crt64);
|
|
} while (rc == -EAGAIN);
|
|
/* on failure: retry once again after a requested rescan */
|
|
if ((rc == -ENODEV) && (zcrypt_process_rescan()))
|
|
do {
|
|
rc = zcrypt_rsa_crt(&crt64);
|
|
} while (rc == -EAGAIN);
|
|
if (rc)
|
|
return rc;
|
|
return put_user(crt64.outputdatalength,
|
|
&ucrt32->outputdatalength);
|
|
}
|
|
|
|
struct compat_ica_xcRB {
|
|
unsigned short agent_ID;
|
|
unsigned int user_defined;
|
|
unsigned short request_ID;
|
|
unsigned int request_control_blk_length;
|
|
unsigned char padding1[16 - sizeof (compat_uptr_t)];
|
|
compat_uptr_t request_control_blk_addr;
|
|
unsigned int request_data_length;
|
|
char padding2[16 - sizeof (compat_uptr_t)];
|
|
compat_uptr_t request_data_address;
|
|
unsigned int reply_control_blk_length;
|
|
char padding3[16 - sizeof (compat_uptr_t)];
|
|
compat_uptr_t reply_control_blk_addr;
|
|
unsigned int reply_data_length;
|
|
char padding4[16 - sizeof (compat_uptr_t)];
|
|
compat_uptr_t reply_data_addr;
|
|
unsigned short priority_window;
|
|
unsigned int status;
|
|
} __attribute__((packed));
|
|
|
|
static long trans_xcRB32(struct file *filp, unsigned int cmd,
|
|
unsigned long arg)
|
|
{
|
|
struct compat_ica_xcRB __user *uxcRB32 = compat_ptr(arg);
|
|
struct compat_ica_xcRB xcRB32;
|
|
struct ica_xcRB xcRB64;
|
|
long rc;
|
|
|
|
if (copy_from_user(&xcRB32, uxcRB32, sizeof(xcRB32)))
|
|
return -EFAULT;
|
|
xcRB64.agent_ID = xcRB32.agent_ID;
|
|
xcRB64.user_defined = xcRB32.user_defined;
|
|
xcRB64.request_ID = xcRB32.request_ID;
|
|
xcRB64.request_control_blk_length =
|
|
xcRB32.request_control_blk_length;
|
|
xcRB64.request_control_blk_addr =
|
|
compat_ptr(xcRB32.request_control_blk_addr);
|
|
xcRB64.request_data_length =
|
|
xcRB32.request_data_length;
|
|
xcRB64.request_data_address =
|
|
compat_ptr(xcRB32.request_data_address);
|
|
xcRB64.reply_control_blk_length =
|
|
xcRB32.reply_control_blk_length;
|
|
xcRB64.reply_control_blk_addr =
|
|
compat_ptr(xcRB32.reply_control_blk_addr);
|
|
xcRB64.reply_data_length = xcRB32.reply_data_length;
|
|
xcRB64.reply_data_addr =
|
|
compat_ptr(xcRB32.reply_data_addr);
|
|
xcRB64.priority_window = xcRB32.priority_window;
|
|
xcRB64.status = xcRB32.status;
|
|
do {
|
|
rc = zcrypt_send_cprb(&xcRB64);
|
|
} while (rc == -EAGAIN);
|
|
/* on failure: retry once again after a requested rescan */
|
|
if ((rc == -ENODEV) && (zcrypt_process_rescan()))
|
|
do {
|
|
rc = zcrypt_send_cprb(&xcRB64);
|
|
} while (rc == -EAGAIN);
|
|
xcRB32.reply_control_blk_length = xcRB64.reply_control_blk_length;
|
|
xcRB32.reply_data_length = xcRB64.reply_data_length;
|
|
xcRB32.status = xcRB64.status;
|
|
if (copy_to_user(uxcRB32, &xcRB32, sizeof(xcRB32)))
|
|
return -EFAULT;
|
|
return rc;
|
|
}
|
|
|
|
static long zcrypt_compat_ioctl(struct file *filp, unsigned int cmd,
|
|
unsigned long arg)
|
|
{
|
|
if (cmd == ICARSAMODEXPO)
|
|
return trans_modexpo32(filp, cmd, arg);
|
|
if (cmd == ICARSACRT)
|
|
return trans_modexpo_crt32(filp, cmd, arg);
|
|
if (cmd == ZSECSENDCPRB)
|
|
return trans_xcRB32(filp, cmd, arg);
|
|
return zcrypt_unlocked_ioctl(filp, cmd, arg);
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* Misc device file operations.
|
|
*/
|
|
static const struct file_operations zcrypt_fops = {
|
|
.owner = THIS_MODULE,
|
|
.read = zcrypt_read,
|
|
.write = zcrypt_write,
|
|
.unlocked_ioctl = zcrypt_unlocked_ioctl,
|
|
#ifdef CONFIG_COMPAT
|
|
.compat_ioctl = zcrypt_compat_ioctl,
|
|
#endif
|
|
.open = zcrypt_open,
|
|
.release = zcrypt_release,
|
|
.llseek = no_llseek,
|
|
};
|
|
|
|
/*
|
|
* Misc device.
|
|
*/
|
|
static struct miscdevice zcrypt_misc_device = {
|
|
.minor = MISC_DYNAMIC_MINOR,
|
|
.name = "z90crypt",
|
|
.fops = &zcrypt_fops,
|
|
};
|
|
|
|
/*
|
|
* Deprecated /proc entry support.
|
|
*/
|
|
static struct proc_dir_entry *zcrypt_entry;
|
|
|
|
static void sprintcl(struct seq_file *m, unsigned char *addr, unsigned int len)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < len; i++)
|
|
seq_printf(m, "%01x", (unsigned int) addr[i]);
|
|
seq_putc(m, ' ');
|
|
}
|
|
|
|
static void sprintrw(struct seq_file *m, unsigned char *addr, unsigned int len)
|
|
{
|
|
int inl, c, cx;
|
|
|
|
seq_printf(m, " ");
|
|
inl = 0;
|
|
for (c = 0; c < (len / 16); c++) {
|
|
sprintcl(m, addr+inl, 16);
|
|
inl += 16;
|
|
}
|
|
cx = len%16;
|
|
if (cx) {
|
|
sprintcl(m, addr+inl, cx);
|
|
inl += cx;
|
|
}
|
|
seq_putc(m, '\n');
|
|
}
|
|
|
|
static void sprinthx(unsigned char *title, struct seq_file *m,
|
|
unsigned char *addr, unsigned int len)
|
|
{
|
|
int inl, r, rx;
|
|
|
|
seq_printf(m, "\n%s\n", title);
|
|
inl = 0;
|
|
for (r = 0; r < (len / 64); r++) {
|
|
sprintrw(m, addr+inl, 64);
|
|
inl += 64;
|
|
}
|
|
rx = len % 64;
|
|
if (rx) {
|
|
sprintrw(m, addr+inl, rx);
|
|
inl += rx;
|
|
}
|
|
seq_putc(m, '\n');
|
|
}
|
|
|
|
static void sprinthx4(unsigned char *title, struct seq_file *m,
|
|
unsigned int *array, unsigned int len)
|
|
{
|
|
seq_printf(m, "\n%s\n", title);
|
|
seq_hex_dump(m, " ", DUMP_PREFIX_NONE, 32, 4, array, len, false);
|
|
seq_putc(m, '\n');
|
|
}
|
|
|
|
static int zcrypt_proc_show(struct seq_file *m, void *v)
|
|
{
|
|
char workarea[sizeof(int) * AP_DEVICES];
|
|
|
|
seq_printf(m, "\nzcrypt version: %d.%d.%d\n",
|
|
ZCRYPT_VERSION, ZCRYPT_RELEASE, ZCRYPT_VARIANT);
|
|
seq_printf(m, "Cryptographic domain: %d\n", ap_domain_index);
|
|
seq_printf(m, "Total device count: %d\n", zcrypt_device_count);
|
|
seq_printf(m, "PCICA count: %d\n", zcrypt_count_type(ZCRYPT_PCICA));
|
|
seq_printf(m, "PCICC count: %d\n", zcrypt_count_type(ZCRYPT_PCICC));
|
|
seq_printf(m, "PCIXCC MCL2 count: %d\n",
|
|
zcrypt_count_type(ZCRYPT_PCIXCC_MCL2));
|
|
seq_printf(m, "PCIXCC MCL3 count: %d\n",
|
|
zcrypt_count_type(ZCRYPT_PCIXCC_MCL3));
|
|
seq_printf(m, "CEX2C count: %d\n", zcrypt_count_type(ZCRYPT_CEX2C));
|
|
seq_printf(m, "CEX2A count: %d\n", zcrypt_count_type(ZCRYPT_CEX2A));
|
|
seq_printf(m, "CEX3C count: %d\n", zcrypt_count_type(ZCRYPT_CEX3C));
|
|
seq_printf(m, "CEX3A count: %d\n", zcrypt_count_type(ZCRYPT_CEX3A));
|
|
seq_printf(m, "requestq count: %d\n", zcrypt_requestq_count());
|
|
seq_printf(m, "pendingq count: %d\n", zcrypt_pendingq_count());
|
|
seq_printf(m, "Total open handles: %d\n\n",
|
|
atomic_read(&zcrypt_open_count));
|
|
zcrypt_status_mask(workarea);
|
|
sprinthx("Online devices: 1=PCICA 2=PCICC 3=PCIXCC(MCL2) "
|
|
"4=PCIXCC(MCL3) 5=CEX2C 6=CEX2A 7=CEX3C 8=CEX3A",
|
|
m, workarea, AP_DEVICES);
|
|
zcrypt_qdepth_mask(workarea);
|
|
sprinthx("Waiting work element counts", m, workarea, AP_DEVICES);
|
|
zcrypt_perdev_reqcnt((int *) workarea);
|
|
sprinthx4("Per-device successfully completed request counts",
|
|
m, (unsigned int *) workarea, AP_DEVICES);
|
|
return 0;
|
|
}
|
|
|
|
static int zcrypt_proc_open(struct inode *inode, struct file *file)
|
|
{
|
|
return single_open(file, zcrypt_proc_show, NULL);
|
|
}
|
|
|
|
static void zcrypt_disable_card(int index)
|
|
{
|
|
struct zcrypt_card *zc;
|
|
struct zcrypt_queue *zq;
|
|
|
|
spin_lock(&zcrypt_list_lock);
|
|
for_each_zcrypt_card(zc) {
|
|
for_each_zcrypt_queue(zq, zc) {
|
|
if (AP_QID_QUEUE(zq->queue->qid) != ap_domain_index)
|
|
continue;
|
|
zq->online = 0;
|
|
ap_flush_queue(zq->queue);
|
|
}
|
|
}
|
|
spin_unlock(&zcrypt_list_lock);
|
|
}
|
|
|
|
static void zcrypt_enable_card(int index)
|
|
{
|
|
struct zcrypt_card *zc;
|
|
struct zcrypt_queue *zq;
|
|
|
|
spin_lock(&zcrypt_list_lock);
|
|
for_each_zcrypt_card(zc) {
|
|
for_each_zcrypt_queue(zq, zc) {
|
|
if (AP_QID_QUEUE(zq->queue->qid) != ap_domain_index)
|
|
continue;
|
|
zq->online = 1;
|
|
ap_flush_queue(zq->queue);
|
|
}
|
|
}
|
|
spin_unlock(&zcrypt_list_lock);
|
|
}
|
|
|
|
static ssize_t zcrypt_proc_write(struct file *file, const char __user *buffer,
|
|
size_t count, loff_t *pos)
|
|
{
|
|
unsigned char *lbuf, *ptr;
|
|
size_t local_count;
|
|
int j;
|
|
|
|
if (count <= 0)
|
|
return 0;
|
|
|
|
#define LBUFSIZE 1200UL
|
|
lbuf = kmalloc(LBUFSIZE, GFP_KERNEL);
|
|
if (!lbuf)
|
|
return 0;
|
|
|
|
local_count = min(LBUFSIZE - 1, count);
|
|
if (copy_from_user(lbuf, buffer, local_count) != 0) {
|
|
kfree(lbuf);
|
|
return -EFAULT;
|
|
}
|
|
lbuf[local_count] = '\0';
|
|
|
|
ptr = strstr(lbuf, "Online devices");
|
|
if (!ptr)
|
|
goto out;
|
|
ptr = strstr(ptr, "\n");
|
|
if (!ptr)
|
|
goto out;
|
|
ptr++;
|
|
|
|
if (strstr(ptr, "Waiting work element counts") == NULL)
|
|
goto out;
|
|
|
|
for (j = 0; j < 64 && *ptr; ptr++) {
|
|
/*
|
|
* '0' for no device, '1' for PCICA, '2' for PCICC,
|
|
* '3' for PCIXCC_MCL2, '4' for PCIXCC_MCL3,
|
|
* '5' for CEX2C and '6' for CEX2A'
|
|
* '7' for CEX3C and '8' for CEX3A
|
|
*/
|
|
if (*ptr >= '0' && *ptr <= '8')
|
|
j++;
|
|
else if (*ptr == 'd' || *ptr == 'D')
|
|
zcrypt_disable_card(j++);
|
|
else if (*ptr == 'e' || *ptr == 'E')
|
|
zcrypt_enable_card(j++);
|
|
else if (*ptr != ' ' && *ptr != '\t')
|
|
break;
|
|
}
|
|
out:
|
|
kfree(lbuf);
|
|
return count;
|
|
}
|
|
|
|
static const struct file_operations zcrypt_proc_fops = {
|
|
.owner = THIS_MODULE,
|
|
.open = zcrypt_proc_open,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
.write = zcrypt_proc_write,
|
|
};
|
|
|
|
static int zcrypt_rng_device_count;
|
|
static u32 *zcrypt_rng_buffer;
|
|
static int zcrypt_rng_buffer_index;
|
|
static DEFINE_MUTEX(zcrypt_rng_mutex);
|
|
|
|
static int zcrypt_rng_data_read(struct hwrng *rng, u32 *data)
|
|
{
|
|
int rc;
|
|
|
|
/*
|
|
* We don't need locking here because the RNG API guarantees serialized
|
|
* read method calls.
|
|
*/
|
|
if (zcrypt_rng_buffer_index == 0) {
|
|
rc = zcrypt_rng((char *) zcrypt_rng_buffer);
|
|
/* on failure: retry once again after a requested rescan */
|
|
if ((rc == -ENODEV) && (zcrypt_process_rescan()))
|
|
rc = zcrypt_rng((char *) zcrypt_rng_buffer);
|
|
if (rc < 0)
|
|
return -EIO;
|
|
zcrypt_rng_buffer_index = rc / sizeof *data;
|
|
}
|
|
*data = zcrypt_rng_buffer[--zcrypt_rng_buffer_index];
|
|
return sizeof *data;
|
|
}
|
|
|
|
static struct hwrng zcrypt_rng_dev = {
|
|
.name = "zcrypt",
|
|
.data_read = zcrypt_rng_data_read,
|
|
.quality = 990,
|
|
};
|
|
|
|
int zcrypt_rng_device_add(void)
|
|
{
|
|
int rc = 0;
|
|
|
|
mutex_lock(&zcrypt_rng_mutex);
|
|
if (zcrypt_rng_device_count == 0) {
|
|
zcrypt_rng_buffer = (u32 *) get_zeroed_page(GFP_KERNEL);
|
|
if (!zcrypt_rng_buffer) {
|
|
rc = -ENOMEM;
|
|
goto out;
|
|
}
|
|
zcrypt_rng_buffer_index = 0;
|
|
if (!zcrypt_hwrng_seed)
|
|
zcrypt_rng_dev.quality = 0;
|
|
rc = hwrng_register(&zcrypt_rng_dev);
|
|
if (rc)
|
|
goto out_free;
|
|
zcrypt_rng_device_count = 1;
|
|
} else
|
|
zcrypt_rng_device_count++;
|
|
mutex_unlock(&zcrypt_rng_mutex);
|
|
return 0;
|
|
|
|
out_free:
|
|
free_page((unsigned long) zcrypt_rng_buffer);
|
|
out:
|
|
mutex_unlock(&zcrypt_rng_mutex);
|
|
return rc;
|
|
}
|
|
|
|
void zcrypt_rng_device_remove(void)
|
|
{
|
|
mutex_lock(&zcrypt_rng_mutex);
|
|
zcrypt_rng_device_count--;
|
|
if (zcrypt_rng_device_count == 0) {
|
|
hwrng_unregister(&zcrypt_rng_dev);
|
|
free_page((unsigned long) zcrypt_rng_buffer);
|
|
}
|
|
mutex_unlock(&zcrypt_rng_mutex);
|
|
}
|
|
|
|
int __init zcrypt_debug_init(void)
|
|
{
|
|
zcrypt_dbf_info = debug_register("zcrypt", 1, 1,
|
|
DBF_MAX_SPRINTF_ARGS * sizeof(long));
|
|
debug_register_view(zcrypt_dbf_info, &debug_sprintf_view);
|
|
debug_set_level(zcrypt_dbf_info, DBF_ERR);
|
|
|
|
return 0;
|
|
}
|
|
|
|
void zcrypt_debug_exit(void)
|
|
{
|
|
debug_unregister(zcrypt_dbf_info);
|
|
}
|
|
|
|
/**
|
|
* zcrypt_api_init(): Module initialization.
|
|
*
|
|
* The module initialization code.
|
|
*/
|
|
int __init zcrypt_api_init(void)
|
|
{
|
|
int rc;
|
|
|
|
rc = zcrypt_debug_init();
|
|
if (rc)
|
|
goto out;
|
|
|
|
atomic_set(&zcrypt_rescan_req, 0);
|
|
|
|
/* Register the request sprayer. */
|
|
rc = misc_register(&zcrypt_misc_device);
|
|
if (rc < 0)
|
|
goto out;
|
|
|
|
/* Set up the proc file system */
|
|
zcrypt_entry = proc_create("driver/z90crypt", 0644, NULL,
|
|
&zcrypt_proc_fops);
|
|
if (!zcrypt_entry) {
|
|
rc = -ENOMEM;
|
|
goto out_misc;
|
|
}
|
|
|
|
zcrypt_msgtype6_init();
|
|
zcrypt_msgtype50_init();
|
|
return 0;
|
|
|
|
out_misc:
|
|
misc_deregister(&zcrypt_misc_device);
|
|
out:
|
|
return rc;
|
|
}
|
|
|
|
/**
|
|
* zcrypt_api_exit(): Module termination.
|
|
*
|
|
* The module termination code.
|
|
*/
|
|
void __exit zcrypt_api_exit(void)
|
|
{
|
|
remove_proc_entry("driver/z90crypt", NULL);
|
|
misc_deregister(&zcrypt_misc_device);
|
|
zcrypt_msgtype6_exit();
|
|
zcrypt_msgtype50_exit();
|
|
zcrypt_debug_exit();
|
|
}
|
|
|
|
module_init(zcrypt_api_init);
|
|
module_exit(zcrypt_api_exit);
|