455 lines
13 KiB
C
455 lines
13 KiB
C
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// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright IBM Corp. 2012, 2019
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* Author(s): Holger Dengler <hd@linux.vnet.ibm.com>
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*/
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <linux/init.h>
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#include <linux/err.h>
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#include <linux/atomic.h>
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#include <linux/uaccess.h>
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#include <linux/mod_devicetable.h>
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#include "ap_bus.h"
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#include "zcrypt_api.h"
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#include "zcrypt_msgtype6.h"
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#include "zcrypt_msgtype50.h"
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#include "zcrypt_error.h"
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#include "zcrypt_cex4.h"
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#include "zcrypt_ccamisc.h"
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#define CEX4A_MIN_MOD_SIZE 1 /* 8 bits */
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#define CEX4A_MAX_MOD_SIZE_2K 256 /* 2048 bits */
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#define CEX4A_MAX_MOD_SIZE_4K 512 /* 4096 bits */
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#define CEX4C_MIN_MOD_SIZE 16 /* 256 bits */
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#define CEX4C_MAX_MOD_SIZE 512 /* 4096 bits */
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#define CEX4A_MAX_MESSAGE_SIZE MSGTYPE50_CRB3_MAX_MSG_SIZE
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#define CEX4C_MAX_MESSAGE_SIZE MSGTYPE06_MAX_MSG_SIZE
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/* Waiting time for requests to be processed.
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* Currently there are some types of request which are not deterministic.
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* But the maximum time limit managed by the stomper code is set to 60sec.
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* Hence we have to wait at least that time period.
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*/
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#define CEX4_CLEANUP_TIME (900*HZ)
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MODULE_AUTHOR("IBM Corporation");
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MODULE_DESCRIPTION("CEX4/CEX5/CEX6/CEX7 Cryptographic Card device driver, " \
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"Copyright IBM Corp. 2019");
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MODULE_LICENSE("GPL");
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static struct ap_device_id zcrypt_cex4_card_ids[] = {
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{ .dev_type = AP_DEVICE_TYPE_CEX4,
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.match_flags = AP_DEVICE_ID_MATCH_CARD_TYPE },
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{ .dev_type = AP_DEVICE_TYPE_CEX5,
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.match_flags = AP_DEVICE_ID_MATCH_CARD_TYPE },
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{ .dev_type = AP_DEVICE_TYPE_CEX6,
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.match_flags = AP_DEVICE_ID_MATCH_CARD_TYPE },
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{ .dev_type = AP_DEVICE_TYPE_CEX7,
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.match_flags = AP_DEVICE_ID_MATCH_CARD_TYPE },
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{ /* end of list */ },
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};
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MODULE_DEVICE_TABLE(ap, zcrypt_cex4_card_ids);
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static struct ap_device_id zcrypt_cex4_queue_ids[] = {
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{ .dev_type = AP_DEVICE_TYPE_CEX4,
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.match_flags = AP_DEVICE_ID_MATCH_QUEUE_TYPE },
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{ .dev_type = AP_DEVICE_TYPE_CEX5,
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.match_flags = AP_DEVICE_ID_MATCH_QUEUE_TYPE },
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{ .dev_type = AP_DEVICE_TYPE_CEX6,
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.match_flags = AP_DEVICE_ID_MATCH_QUEUE_TYPE },
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{ .dev_type = AP_DEVICE_TYPE_CEX7,
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.match_flags = AP_DEVICE_ID_MATCH_QUEUE_TYPE },
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{ /* end of list */ },
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};
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MODULE_DEVICE_TABLE(ap, zcrypt_cex4_queue_ids);
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/*
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* CCA card addditional device attributes
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*/
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static ssize_t serialnr_show(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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struct cca_info ci;
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struct ap_card *ac = to_ap_card(dev);
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struct zcrypt_card *zc = ac->private;
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memset(&ci, 0, sizeof(ci));
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if (ap_domain_index >= 0)
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cca_get_info(ac->id, ap_domain_index, &ci, zc->online);
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return snprintf(buf, PAGE_SIZE, "%s\n", ci.serial);
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}
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static DEVICE_ATTR_RO(serialnr);
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static struct attribute *cca_card_attrs[] = {
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&dev_attr_serialnr.attr,
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NULL,
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};
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static const struct attribute_group cca_card_attr_group = {
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.attrs = cca_card_attrs,
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};
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/*
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* CCA queue addditional device attributes
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*/
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static ssize_t mkvps_show(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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int n = 0;
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struct cca_info ci;
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struct zcrypt_queue *zq = to_ap_queue(dev)->private;
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static const char * const cao_state[] = { "invalid", "valid" };
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static const char * const new_state[] = { "empty", "partial", "full" };
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memset(&ci, 0, sizeof(ci));
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cca_get_info(AP_QID_CARD(zq->queue->qid),
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AP_QID_QUEUE(zq->queue->qid),
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&ci, zq->online);
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if (ci.new_mk_state >= '1' && ci.new_mk_state <= '3')
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n = snprintf(buf, PAGE_SIZE, "AES NEW: %s 0x%016llx\n",
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new_state[ci.new_mk_state - '1'], ci.new_mkvp);
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else
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n = snprintf(buf, PAGE_SIZE, "AES NEW: - -\n");
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if (ci.cur_mk_state >= '1' && ci.cur_mk_state <= '2')
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n += snprintf(buf + n, PAGE_SIZE - n, "AES CUR: %s 0x%016llx\n",
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cao_state[ci.cur_mk_state - '1'], ci.cur_mkvp);
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else
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n += snprintf(buf + n, PAGE_SIZE - n, "AES CUR: - -\n");
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if (ci.old_mk_state >= '1' && ci.old_mk_state <= '2')
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n += snprintf(buf + n, PAGE_SIZE - n, "AES OLD: %s 0x%016llx\n",
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cao_state[ci.old_mk_state - '1'], ci.old_mkvp);
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else
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n += snprintf(buf + n, PAGE_SIZE - n, "AES OLD: - -\n");
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return n;
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}
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static DEVICE_ATTR_RO(mkvps);
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static struct attribute *cca_queue_attrs[] = {
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&dev_attr_mkvps.attr,
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NULL,
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};
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static const struct attribute_group cca_queue_attr_group = {
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.attrs = cca_queue_attrs,
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};
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/**
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* Probe function for CEX4/CEX5/CEX6/CEX7 card device. It always
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* accepts the AP device since the bus_match already checked
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* the hardware type.
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* @ap_dev: pointer to the AP device.
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*/
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static int zcrypt_cex4_card_probe(struct ap_device *ap_dev)
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{
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/*
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* Normalized speed ratings per crypto adapter
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* MEX_1k, MEX_2k, MEX_4k, CRT_1k, CRT_2k, CRT_4k, RNG, SECKEY
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*/
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static const int CEX4A_SPEED_IDX[] = {
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14, 19, 249, 42, 228, 1458, 0, 0};
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static const int CEX5A_SPEED_IDX[] = {
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8, 9, 20, 18, 66, 458, 0, 0};
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static const int CEX6A_SPEED_IDX[] = {
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6, 9, 20, 17, 65, 438, 0, 0};
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static const int CEX7A_SPEED_IDX[] = {
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6, 8, 17, 15, 54, 362, 0, 0};
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static const int CEX4C_SPEED_IDX[] = {
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59, 69, 308, 83, 278, 2204, 209, 40};
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static const int CEX5C_SPEED_IDX[] = {
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24, 31, 50, 37, 90, 479, 27, 10};
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static const int CEX6C_SPEED_IDX[] = {
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16, 20, 32, 27, 77, 455, 24, 9};
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static const int CEX7C_SPEED_IDX[] = {
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14, 16, 26, 23, 64, 376, 23, 8};
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static const int CEX4P_SPEED_IDX[] = {
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0, 0, 0, 0, 0, 0, 0, 50};
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static const int CEX5P_SPEED_IDX[] = {
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0, 0, 0, 0, 0, 0, 0, 10};
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static const int CEX6P_SPEED_IDX[] = {
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0, 0, 0, 0, 0, 0, 0, 9};
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static const int CEX7P_SPEED_IDX[] = {
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0, 0, 0, 0, 0, 0, 0, 8};
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struct ap_card *ac = to_ap_card(&ap_dev->device);
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struct zcrypt_card *zc;
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int rc = 0;
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zc = zcrypt_card_alloc();
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if (!zc)
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return -ENOMEM;
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zc->card = ac;
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ac->private = zc;
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if (ap_test_bit(&ac->functions, AP_FUNC_ACCEL)) {
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if (ac->ap_dev.device_type == AP_DEVICE_TYPE_CEX4) {
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zc->type_string = "CEX4A";
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zc->user_space_type = ZCRYPT_CEX4;
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memcpy(zc->speed_rating, CEX4A_SPEED_IDX,
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sizeof(CEX4A_SPEED_IDX));
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} else if (ac->ap_dev.device_type == AP_DEVICE_TYPE_CEX5) {
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zc->type_string = "CEX5A";
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zc->user_space_type = ZCRYPT_CEX5;
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memcpy(zc->speed_rating, CEX5A_SPEED_IDX,
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sizeof(CEX5A_SPEED_IDX));
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} else if (ac->ap_dev.device_type == AP_DEVICE_TYPE_CEX6) {
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zc->type_string = "CEX6A";
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zc->user_space_type = ZCRYPT_CEX6;
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memcpy(zc->speed_rating, CEX6A_SPEED_IDX,
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sizeof(CEX6A_SPEED_IDX));
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} else {
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zc->type_string = "CEX7A";
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/* wrong user space type, just for compatibility
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* with the ZCRYPT_STATUS_MASK ioctl.
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*/
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zc->user_space_type = ZCRYPT_CEX6;
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memcpy(zc->speed_rating, CEX7A_SPEED_IDX,
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sizeof(CEX7A_SPEED_IDX));
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}
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zc->min_mod_size = CEX4A_MIN_MOD_SIZE;
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if (ap_test_bit(&ac->functions, AP_FUNC_MEX4K) &&
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ap_test_bit(&ac->functions, AP_FUNC_CRT4K)) {
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zc->max_mod_size = CEX4A_MAX_MOD_SIZE_4K;
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zc->max_exp_bit_length =
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CEX4A_MAX_MOD_SIZE_4K;
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} else {
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zc->max_mod_size = CEX4A_MAX_MOD_SIZE_2K;
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zc->max_exp_bit_length =
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CEX4A_MAX_MOD_SIZE_2K;
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}
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} else if (ap_test_bit(&ac->functions, AP_FUNC_COPRO)) {
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if (ac->ap_dev.device_type == AP_DEVICE_TYPE_CEX4) {
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zc->type_string = "CEX4C";
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/* wrong user space type, must be CEX4
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* just keep it for cca compatibility
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*/
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zc->user_space_type = ZCRYPT_CEX3C;
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memcpy(zc->speed_rating, CEX4C_SPEED_IDX,
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sizeof(CEX4C_SPEED_IDX));
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} else if (ac->ap_dev.device_type == AP_DEVICE_TYPE_CEX5) {
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zc->type_string = "CEX5C";
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/* wrong user space type, must be CEX5
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* just keep it for cca compatibility
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*/
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zc->user_space_type = ZCRYPT_CEX3C;
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memcpy(zc->speed_rating, CEX5C_SPEED_IDX,
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sizeof(CEX5C_SPEED_IDX));
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} else if (ac->ap_dev.device_type == AP_DEVICE_TYPE_CEX6) {
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zc->type_string = "CEX6C";
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/* wrong user space type, must be CEX6
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* just keep it for cca compatibility
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*/
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zc->user_space_type = ZCRYPT_CEX3C;
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memcpy(zc->speed_rating, CEX6C_SPEED_IDX,
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sizeof(CEX6C_SPEED_IDX));
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} else {
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zc->type_string = "CEX7C";
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/* wrong user space type, must be CEX7
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* just keep it for cca compatibility
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*/
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zc->user_space_type = ZCRYPT_CEX3C;
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memcpy(zc->speed_rating, CEX7C_SPEED_IDX,
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sizeof(CEX7C_SPEED_IDX));
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}
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zc->min_mod_size = CEX4C_MIN_MOD_SIZE;
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zc->max_mod_size = CEX4C_MAX_MOD_SIZE;
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zc->max_exp_bit_length = CEX4C_MAX_MOD_SIZE;
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} else if (ap_test_bit(&ac->functions, AP_FUNC_EP11)) {
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if (ac->ap_dev.device_type == AP_DEVICE_TYPE_CEX4) {
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zc->type_string = "CEX4P";
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zc->user_space_type = ZCRYPT_CEX4;
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memcpy(zc->speed_rating, CEX4P_SPEED_IDX,
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sizeof(CEX4P_SPEED_IDX));
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} else if (ac->ap_dev.device_type == AP_DEVICE_TYPE_CEX5) {
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zc->type_string = "CEX5P";
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zc->user_space_type = ZCRYPT_CEX5;
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memcpy(zc->speed_rating, CEX5P_SPEED_IDX,
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sizeof(CEX5P_SPEED_IDX));
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} else if (ac->ap_dev.device_type == AP_DEVICE_TYPE_CEX6) {
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zc->type_string = "CEX6P";
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zc->user_space_type = ZCRYPT_CEX6;
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memcpy(zc->speed_rating, CEX6P_SPEED_IDX,
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sizeof(CEX6P_SPEED_IDX));
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} else {
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zc->type_string = "CEX7P";
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/* wrong user space type, just for compatibility
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* with the ZCRYPT_STATUS_MASK ioctl.
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*/
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zc->user_space_type = ZCRYPT_CEX6;
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memcpy(zc->speed_rating, CEX7P_SPEED_IDX,
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sizeof(CEX7P_SPEED_IDX));
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}
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zc->min_mod_size = CEX4C_MIN_MOD_SIZE;
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zc->max_mod_size = CEX4C_MAX_MOD_SIZE;
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zc->max_exp_bit_length = CEX4C_MAX_MOD_SIZE;
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} else {
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zcrypt_card_free(zc);
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return -ENODEV;
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}
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zc->online = 1;
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rc = zcrypt_card_register(zc);
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if (rc) {
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ac->private = NULL;
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zcrypt_card_free(zc);
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goto out;
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}
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if (ap_test_bit(&ac->functions, AP_FUNC_COPRO)) {
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rc = sysfs_create_group(&ap_dev->device.kobj,
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&cca_card_attr_group);
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if (rc)
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zcrypt_card_unregister(zc);
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}
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out:
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return rc;
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}
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/**
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* This is called to remove the CEX4/CEX5/CEX6/CEX7 card driver
|
||
|
|
* information if an AP card device is removed.
|
||
|
|
*/
|
||
|
|
static void zcrypt_cex4_card_remove(struct ap_device *ap_dev)
|
||
|
|
{
|
||
|
|
struct ap_card *ac = to_ap_card(&ap_dev->device);
|
||
|
|
struct zcrypt_card *zc = ac->private;
|
||
|
|
|
||
|
|
if (ap_test_bit(&ac->functions, AP_FUNC_COPRO))
|
||
|
|
sysfs_remove_group(&ap_dev->device.kobj, &cca_card_attr_group);
|
||
|
|
if (zc)
|
||
|
|
zcrypt_card_unregister(zc);
|
||
|
|
}
|
||
|
|
|
||
|
|
static struct ap_driver zcrypt_cex4_card_driver = {
|
||
|
|
.probe = zcrypt_cex4_card_probe,
|
||
|
|
.remove = zcrypt_cex4_card_remove,
|
||
|
|
.ids = zcrypt_cex4_card_ids,
|
||
|
|
.flags = AP_DRIVER_FLAG_DEFAULT,
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Probe function for CEX4/CEX5/CEX6/CEX7 queue device. It always
|
||
|
|
* accepts the AP device since the bus_match already checked
|
||
|
|
* the hardware type.
|
||
|
|
* @ap_dev: pointer to the AP device.
|
||
|
|
*/
|
||
|
|
static int zcrypt_cex4_queue_probe(struct ap_device *ap_dev)
|
||
|
|
{
|
||
|
|
struct ap_queue *aq = to_ap_queue(&ap_dev->device);
|
||
|
|
struct zcrypt_queue *zq;
|
||
|
|
int rc;
|
||
|
|
|
||
|
|
if (ap_test_bit(&aq->card->functions, AP_FUNC_ACCEL)) {
|
||
|
|
zq = zcrypt_queue_alloc(CEX4A_MAX_MESSAGE_SIZE);
|
||
|
|
if (!zq)
|
||
|
|
return -ENOMEM;
|
||
|
|
zq->ops = zcrypt_msgtype(MSGTYPE50_NAME,
|
||
|
|
MSGTYPE50_VARIANT_DEFAULT);
|
||
|
|
} else if (ap_test_bit(&aq->card->functions, AP_FUNC_COPRO)) {
|
||
|
|
zq = zcrypt_queue_alloc(CEX4C_MAX_MESSAGE_SIZE);
|
||
|
|
if (!zq)
|
||
|
|
return -ENOMEM;
|
||
|
|
zq->ops = zcrypt_msgtype(MSGTYPE06_NAME,
|
||
|
|
MSGTYPE06_VARIANT_DEFAULT);
|
||
|
|
} else if (ap_test_bit(&aq->card->functions, AP_FUNC_EP11)) {
|
||
|
|
zq = zcrypt_queue_alloc(CEX4C_MAX_MESSAGE_SIZE);
|
||
|
|
if (!zq)
|
||
|
|
return -ENOMEM;
|
||
|
|
zq->ops = zcrypt_msgtype(MSGTYPE06_NAME,
|
||
|
|
MSGTYPE06_VARIANT_EP11);
|
||
|
|
} else {
|
||
|
|
return -ENODEV;
|
||
|
|
}
|
||
|
|
|
||
|
|
zq->queue = aq;
|
||
|
|
zq->online = 1;
|
||
|
|
atomic_set(&zq->load, 0);
|
||
|
|
ap_queue_init_state(aq);
|
||
|
|
ap_queue_init_reply(aq, &zq->reply);
|
||
|
|
aq->request_timeout = CEX4_CLEANUP_TIME,
|
||
|
|
aq->private = zq;
|
||
|
|
rc = zcrypt_queue_register(zq);
|
||
|
|
if (rc) {
|
||
|
|
aq->private = NULL;
|
||
|
|
zcrypt_queue_free(zq);
|
||
|
|
goto out;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (ap_test_bit(&aq->card->functions, AP_FUNC_COPRO)) {
|
||
|
|
rc = sysfs_create_group(&ap_dev->device.kobj,
|
||
|
|
&cca_queue_attr_group);
|
||
|
|
if (rc)
|
||
|
|
zcrypt_queue_unregister(zq);
|
||
|
|
}
|
||
|
|
|
||
|
|
out:
|
||
|
|
return rc;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* This is called to remove the CEX4/CEX5/CEX6/CEX7 queue driver
|
||
|
|
* information if an AP queue device is removed.
|
||
|
|
*/
|
||
|
|
static void zcrypt_cex4_queue_remove(struct ap_device *ap_dev)
|
||
|
|
{
|
||
|
|
struct ap_queue *aq = to_ap_queue(&ap_dev->device);
|
||
|
|
struct zcrypt_queue *zq = aq->private;
|
||
|
|
|
||
|
|
if (ap_test_bit(&aq->card->functions, AP_FUNC_COPRO))
|
||
|
|
sysfs_remove_group(&ap_dev->device.kobj, &cca_queue_attr_group);
|
||
|
|
if (zq)
|
||
|
|
zcrypt_queue_unregister(zq);
|
||
|
|
}
|
||
|
|
|
||
|
|
static struct ap_driver zcrypt_cex4_queue_driver = {
|
||
|
|
.probe = zcrypt_cex4_queue_probe,
|
||
|
|
.remove = zcrypt_cex4_queue_remove,
|
||
|
|
.suspend = ap_queue_suspend,
|
||
|
|
.resume = ap_queue_resume,
|
||
|
|
.ids = zcrypt_cex4_queue_ids,
|
||
|
|
.flags = AP_DRIVER_FLAG_DEFAULT,
|
||
|
|
};
|
||
|
|
|
||
|
|
int __init zcrypt_cex4_init(void)
|
||
|
|
{
|
||
|
|
int rc;
|
||
|
|
|
||
|
|
rc = ap_driver_register(&zcrypt_cex4_card_driver,
|
||
|
|
THIS_MODULE, "cex4card");
|
||
|
|
if (rc)
|
||
|
|
return rc;
|
||
|
|
|
||
|
|
rc = ap_driver_register(&zcrypt_cex4_queue_driver,
|
||
|
|
THIS_MODULE, "cex4queue");
|
||
|
|
if (rc)
|
||
|
|
ap_driver_unregister(&zcrypt_cex4_card_driver);
|
||
|
|
|
||
|
|
return rc;
|
||
|
|
}
|
||
|
|
|
||
|
|
void __exit zcrypt_cex4_exit(void)
|
||
|
|
{
|
||
|
|
ap_driver_unregister(&zcrypt_cex4_queue_driver);
|
||
|
|
ap_driver_unregister(&zcrypt_cex4_card_driver);
|
||
|
|
}
|
||
|
|
|
||
|
|
module_init(zcrypt_cex4_init);
|
||
|
|
module_exit(zcrypt_cex4_exit);
|