V3s_Allwinner
/
linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases 1 Wiki Activity
linux/linux-5.18.11/drivers/s390/crypto/zcrypt_cex4.c

735 lines
21 KiB
C
Raw Permalink Blame History

// SPDX-License-Identifier: GPL-2.0
/*
* Copyright IBM Corp. 2012, 2022
* Author(s): Holger Dengler <hd@linux.vnet.ibm.com>
*/
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/init.h>
#include <linux/err.h>
#include <linux/atomic.h>
#include <linux/uaccess.h>
#include <linux/mod_devicetable.h>
#include "ap_bus.h"
#include "zcrypt_api.h"
#include "zcrypt_msgtype6.h"
#include "zcrypt_msgtype50.h"
#include "zcrypt_error.h"
#include "zcrypt_cex4.h"
#include "zcrypt_ccamisc.h"
#include "zcrypt_ep11misc.h"
#define CEX4A_MIN_MOD_SIZE 1 /* 8 bits */
#define CEX4A_MAX_MOD_SIZE_2K 256 /* 2048 bits */
#define CEX4A_MAX_MOD_SIZE_4K 512 /* 4096 bits */
#define CEX4C_MIN_MOD_SIZE 16 /* 256 bits */
#define CEX4C_MAX_MOD_SIZE 512 /* 4096 bits */
/* Waiting time for requests to be processed.
* Currently there are some types of request which are not deterministic.
* But the maximum time limit managed by the stomper code is set to 60sec.
* Hence we have to wait at least that time period.
*/
#define CEX4_CLEANUP_TIME (900*HZ)
MODULE_AUTHOR("IBM Corporation");
MODULE_DESCRIPTION("CEX[45678] Cryptographic Card device driver, " \
"Copyright IBM Corp. 2022");
MODULE_LICENSE("GPL");
static struct ap_device_id zcrypt_cex4_card_ids[] = {
{ .dev_type = AP_DEVICE_TYPE_CEX4,
.match_flags = AP_DEVICE_ID_MATCH_CARD_TYPE },
{ .dev_type = AP_DEVICE_TYPE_CEX5,
.match_flags = AP_DEVICE_ID_MATCH_CARD_TYPE },
{ .dev_type = AP_DEVICE_TYPE_CEX6,
.match_flags = AP_DEVICE_ID_MATCH_CARD_TYPE },
{ .dev_type = AP_DEVICE_TYPE_CEX7,
.match_flags = AP_DEVICE_ID_MATCH_CARD_TYPE },
{ .dev_type = AP_DEVICE_TYPE_CEX8,
.match_flags = AP_DEVICE_ID_MATCH_CARD_TYPE },
{ /* end of list */ },
};
MODULE_DEVICE_TABLE(ap, zcrypt_cex4_card_ids);
static struct ap_device_id zcrypt_cex4_queue_ids[] = {
{ .dev_type = AP_DEVICE_TYPE_CEX4,
.match_flags = AP_DEVICE_ID_MATCH_QUEUE_TYPE },
{ .dev_type = AP_DEVICE_TYPE_CEX5,
.match_flags = AP_DEVICE_ID_MATCH_QUEUE_TYPE },
{ .dev_type = AP_DEVICE_TYPE_CEX6,
.match_flags = AP_DEVICE_ID_MATCH_QUEUE_TYPE },
{ .dev_type = AP_DEVICE_TYPE_CEX7,
.match_flags = AP_DEVICE_ID_MATCH_QUEUE_TYPE },
{ .dev_type = AP_DEVICE_TYPE_CEX8,
.match_flags = AP_DEVICE_ID_MATCH_QUEUE_TYPE },
{ /* end of list */ },
};
MODULE_DEVICE_TABLE(ap, zcrypt_cex4_queue_ids);
/*
* CCA card additional device attributes
*/
static ssize_t cca_serialnr_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct zcrypt_card *zc = dev_get_drvdata(dev);
struct cca_info ci;
struct ap_card *ac = to_ap_card(dev);
memset(&ci, 0, sizeof(ci));
if (ap_domain_index >= 0)
cca_get_info(ac->id, ap_domain_index, &ci, zc->online);
return scnprintf(buf, PAGE_SIZE, "%s\n", ci.serial);
}
static struct device_attribute dev_attr_cca_serialnr =
__ATTR(serialnr, 0444, cca_serialnr_show, NULL);
static struct attribute *cca_card_attrs[] = {
&dev_attr_cca_serialnr.attr,
NULL,
};
static const struct attribute_group cca_card_attr_grp = {
.attrs = cca_card_attrs,
};
/*
* CCA queue additional device attributes
*/
static ssize_t cca_mkvps_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct zcrypt_queue *zq = dev_get_drvdata(dev);
int n = 0;
struct cca_info ci;
static const char * const cao_state[] = { "invalid", "valid" };
static const char * const new_state[] = { "empty", "partial", "full" };
memset(&ci, 0, sizeof(ci));
cca_get_info(AP_QID_CARD(zq->queue->qid),
AP_QID_QUEUE(zq->queue->qid),
&ci, zq->online);
if (ci.new_aes_mk_state >= '1' && ci.new_aes_mk_state <= '3')
n = scnprintf(buf, PAGE_SIZE, "AES NEW: %s 0x%016llx\n",
new_state[ci.new_aes_mk_state - '1'],
ci.new_aes_mkvp);
else
n = scnprintf(buf, PAGE_SIZE, "AES NEW: - -\n");
if (ci.cur_aes_mk_state >= '1' && ci.cur_aes_mk_state <= '2')
n += scnprintf(buf + n, PAGE_SIZE - n,
"AES CUR: %s 0x%016llx\n",
cao_state[ci.cur_aes_mk_state - '1'],
ci.cur_aes_mkvp);
else
n += scnprintf(buf + n, PAGE_SIZE - n, "AES CUR: - -\n");
if (ci.old_aes_mk_state >= '1' && ci.old_aes_mk_state <= '2')
n += scnprintf(buf + n, PAGE_SIZE - n,
"AES OLD: %s 0x%016llx\n",
cao_state[ci.old_aes_mk_state - '1'],
ci.old_aes_mkvp);
else
n += scnprintf(buf + n, PAGE_SIZE - n, "AES OLD: - -\n");
if (ci.new_apka_mk_state >= '1' && ci.new_apka_mk_state <= '3')
n += scnprintf(buf + n, PAGE_SIZE - n,
"APKA NEW: %s 0x%016llx\n",
new_state[ci.new_apka_mk_state - '1'],
ci.new_apka_mkvp);
else
n += scnprintf(buf + n, PAGE_SIZE - n, "APKA NEW: - -\n");
if (ci.cur_apka_mk_state >= '1' && ci.cur_apka_mk_state <= '2')
n += scnprintf(buf + n, PAGE_SIZE - n,
"APKA CUR: %s 0x%016llx\n",
cao_state[ci.cur_apka_mk_state - '1'],
ci.cur_apka_mkvp);
else
n += scnprintf(buf + n, PAGE_SIZE - n, "APKA CUR: - -\n");
if (ci.old_apka_mk_state >= '1' && ci.old_apka_mk_state <= '2')
n += scnprintf(buf + n, PAGE_SIZE - n,
"APKA OLD: %s 0x%016llx\n",
cao_state[ci.old_apka_mk_state - '1'],
ci.old_apka_mkvp);
else
n += scnprintf(buf + n, PAGE_SIZE - n, "APKA OLD: - -\n");
return n;
}
static struct device_attribute dev_attr_cca_mkvps =
__ATTR(mkvps, 0444, cca_mkvps_show, NULL);
static struct attribute *cca_queue_attrs[] = {
&dev_attr_cca_mkvps.attr,
NULL,
};
static const struct attribute_group cca_queue_attr_grp = {
.attrs = cca_queue_attrs,
};
/*
* EP11 card additional device attributes
*/
static ssize_t ep11_api_ordinalnr_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct zcrypt_card *zc = dev_get_drvdata(dev);
struct ep11_card_info ci;
struct ap_card *ac = to_ap_card(dev);
memset(&ci, 0, sizeof(ci));
ep11_get_card_info(ac->id, &ci, zc->online);
if (ci.API_ord_nr > 0)
return scnprintf(buf, PAGE_SIZE, "%u\n", ci.API_ord_nr);
else
return scnprintf(buf, PAGE_SIZE, "\n");
}
static struct device_attribute dev_attr_ep11_api_ordinalnr =
__ATTR(API_ordinalnr, 0444, ep11_api_ordinalnr_show, NULL);
static ssize_t ep11_fw_version_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct zcrypt_card *zc = dev_get_drvdata(dev);
struct ep11_card_info ci;
struct ap_card *ac = to_ap_card(dev);
memset(&ci, 0, sizeof(ci));
ep11_get_card_info(ac->id, &ci, zc->online);
if (ci.FW_version > 0)
return scnprintf(buf, PAGE_SIZE, "%d.%d\n",
(int)(ci.FW_version >> 8),
(int)(ci.FW_version & 0xFF));
else
return scnprintf(buf, PAGE_SIZE, "\n");
}
static struct device_attribute dev_attr_ep11_fw_version =
__ATTR(FW_version, 0444, ep11_fw_version_show, NULL);
static ssize_t ep11_serialnr_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct zcrypt_card *zc = dev_get_drvdata(dev);
struct ep11_card_info ci;
struct ap_card *ac = to_ap_card(dev);
memset(&ci, 0, sizeof(ci));
ep11_get_card_info(ac->id, &ci, zc->online);
if (ci.serial[0])
return scnprintf(buf, PAGE_SIZE, "%16.16s\n", ci.serial);
else
return scnprintf(buf, PAGE_SIZE, "\n");
}
static struct device_attribute dev_attr_ep11_serialnr =
__ATTR(serialnr, 0444, ep11_serialnr_show, NULL);
static const struct {
int mode_bit;
const char *mode_txt;
} ep11_op_modes[] = {
{ 0, "FIPS2009" },
{ 1, "BSI2009" },
{ 2, "FIPS2011" },
{ 3, "BSI2011" },
{ 6, "BSICC2017" },
{ 0, NULL }
};
static ssize_t ep11_card_op_modes_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct zcrypt_card *zc = dev_get_drvdata(dev);
int i, n = 0;
struct ep11_card_info ci;
struct ap_card *ac = to_ap_card(dev);
memset(&ci, 0, sizeof(ci));
ep11_get_card_info(ac->id, &ci, zc->online);
for (i = 0; ep11_op_modes[i].mode_txt; i++) {
if (ci.op_mode & (1ULL << ep11_op_modes[i].mode_bit)) {
if (n > 0)
buf[n++] = ' ';
n += scnprintf(buf + n, PAGE_SIZE - n,
"%s", ep11_op_modes[i].mode_txt);
}
}
n += scnprintf(buf + n, PAGE_SIZE - n, "\n");
return n;
}
static struct device_attribute dev_attr_ep11_card_op_modes =
__ATTR(op_modes, 0444, ep11_card_op_modes_show, NULL);
static struct attribute *ep11_card_attrs[] = {
&dev_attr_ep11_api_ordinalnr.attr,
&dev_attr_ep11_fw_version.attr,
&dev_attr_ep11_serialnr.attr,
&dev_attr_ep11_card_op_modes.attr,
NULL,
};
static const struct attribute_group ep11_card_attr_grp = {
.attrs = ep11_card_attrs,
};
/*
* EP11 queue additional device attributes
*/
static ssize_t ep11_mkvps_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct zcrypt_queue *zq = dev_get_drvdata(dev);
int n = 0;
struct ep11_domain_info di;
static const char * const cwk_state[] = { "invalid", "valid" };
static const char * const nwk_state[] = { "empty", "uncommitted",
"committed" };
memset(&di, 0, sizeof(di));
if (zq->online)
ep11_get_domain_info(AP_QID_CARD(zq->queue->qid),
AP_QID_QUEUE(zq->queue->qid),
&di);
if (di.cur_wk_state == '0') {
n = scnprintf(buf, PAGE_SIZE, "WK CUR: %s -\n",
cwk_state[di.cur_wk_state - '0']);
} else if (di.cur_wk_state == '1') {
n = scnprintf(buf, PAGE_SIZE, "WK CUR: %s 0x",
cwk_state[di.cur_wk_state - '0']);
bin2hex(buf + n, di.cur_wkvp, sizeof(di.cur_wkvp));
n += 2 * sizeof(di.cur_wkvp);
n += scnprintf(buf + n, PAGE_SIZE - n, "\n");
} else
n = scnprintf(buf, PAGE_SIZE, "WK CUR: - -\n");
if (di.new_wk_state == '0') {
n += scnprintf(buf + n, PAGE_SIZE - n, "WK NEW: %s -\n",
nwk_state[di.new_wk_state - '0']);
} else if (di.new_wk_state >= '1' && di.new_wk_state <= '2') {
n += scnprintf(buf + n, PAGE_SIZE - n, "WK NEW: %s 0x",
nwk_state[di.new_wk_state - '0']);
bin2hex(buf + n, di.new_wkvp, sizeof(di.new_wkvp));
n += 2 * sizeof(di.new_wkvp);
n += scnprintf(buf + n, PAGE_SIZE - n, "\n");
} else
n += scnprintf(buf + n, PAGE_SIZE - n, "WK NEW: - -\n");
return n;
}
static struct device_attribute dev_attr_ep11_mkvps =
__ATTR(mkvps, 0444, ep11_mkvps_show, NULL);
static ssize_t ep11_queue_op_modes_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct zcrypt_queue *zq = dev_get_drvdata(dev);
int i, n = 0;
struct ep11_domain_info di;
memset(&di, 0, sizeof(di));
if (zq->online)
ep11_get_domain_info(AP_QID_CARD(zq->queue->qid),
AP_QID_QUEUE(zq->queue->qid),
&di);
for (i = 0; ep11_op_modes[i].mode_txt; i++) {
if (di.op_mode & (1ULL << ep11_op_modes[i].mode_bit)) {
if (n > 0)
buf[n++] = ' ';
n += scnprintf(buf + n, PAGE_SIZE - n,
"%s", ep11_op_modes[i].mode_txt);
}
}
n += scnprintf(buf + n, PAGE_SIZE - n, "\n");
return n;
}
static struct device_attribute dev_attr_ep11_queue_op_modes =
__ATTR(op_modes, 0444, ep11_queue_op_modes_show, NULL);
static struct attribute *ep11_queue_attrs[] = {
&dev_attr_ep11_mkvps.attr,
&dev_attr_ep11_queue_op_modes.attr,
NULL,
};
static const struct attribute_group ep11_queue_attr_grp = {
.attrs = ep11_queue_attrs,
};
/*
* Probe function for CEX[45678] card 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_card_probe(struct ap_device *ap_dev)
{
/*
* Normalized speed ratings per crypto adapter
* MEX_1k, MEX_2k, MEX_4k, CRT_1k, CRT_2k, CRT_4k, RNG, SECKEY
*/
static const int CEX4A_SPEED_IDX[NUM_OPS] = {
14, 19, 249, 42, 228, 1458, 0, 0};
static const int CEX5A_SPEED_IDX[NUM_OPS] = {
8, 9, 20, 18, 66, 458, 0, 0};
static const int CEX6A_SPEED_IDX[NUM_OPS] = {
6, 9, 20, 17, 65, 438, 0, 0};
static const int CEX7A_SPEED_IDX[NUM_OPS] = {
6, 8, 17, 15, 54, 362, 0, 0};
static const int CEX8A_SPEED_IDX[NUM_OPS] = {
6, 8, 17, 15, 54, 362, 0, 0};
static const int CEX4C_SPEED_IDX[NUM_OPS] = {
59, 69, 308, 83, 278, 2204, 209, 40};
static const int CEX5C_SPEED_IDX[] = {
24, 31, 50, 37, 90, 479, 27, 10};
static const int CEX6C_SPEED_IDX[NUM_OPS] = {
16, 20, 32, 27, 77, 455, 24, 9};
static const int CEX7C_SPEED_IDX[NUM_OPS] = {
14, 16, 26, 23, 64, 376, 23, 8};
static const int CEX8C_SPEED_IDX[NUM_OPS] = {
14, 16, 26, 23, 64, 376, 23, 8};
static const int CEX4P_SPEED_IDX[NUM_OPS] = {
0, 0, 0, 0, 0, 0, 0, 50};
static const int CEX5P_SPEED_IDX[NUM_OPS] = {
0, 0, 0, 0, 0, 0, 0, 10};
static const int CEX6P_SPEED_IDX[NUM_OPS] = {
0, 0, 0, 0, 0, 0, 0, 9};
static const int CEX7P_SPEED_IDX[NUM_OPS] = {
0, 0, 0, 0, 0, 0, 0, 8};
static const int CEX8P_SPEED_IDX[NUM_OPS] = {
0, 0, 0, 0, 0, 0, 0, 8};
struct ap_card *ac = to_ap_card(&ap_dev->device);
struct zcrypt_card *zc;
int rc = 0;
zc = zcrypt_card_alloc();
if (!zc)
return -ENOMEM;
zc->card = ac;
dev_set_drvdata(&ap_dev->device, zc);
if (ap_test_bit(&ac->functions, AP_FUNC_ACCEL)) {
if (ac->ap_dev.device_type == AP_DEVICE_TYPE_CEX4) {
zc->type_string = "CEX4A";
zc->user_space_type = ZCRYPT_CEX4;
zc->speed_rating = CEX4A_SPEED_IDX;
} else if (ac->ap_dev.device_type == AP_DEVICE_TYPE_CEX5) {
zc->type_string = "CEX5A";
zc->user_space_type = ZCRYPT_CEX5;
zc->speed_rating = CEX5A_SPEED_IDX;
} else if (ac->ap_dev.device_type == AP_DEVICE_TYPE_CEX6) {
zc->type_string = "CEX6A";
zc->user_space_type = ZCRYPT_CEX6;
zc->speed_rating = CEX6A_SPEED_IDX;
} else if (ac->ap_dev.device_type == AP_DEVICE_TYPE_CEX7) {
zc->type_string = "CEX7A";
zc->speed_rating = CEX7A_SPEED_IDX;
/* wrong user space type, just for compatibility
* with the ZCRYPT_STATUS_MASK ioctl.
*/
zc->user_space_type = ZCRYPT_CEX6;
} else {
zc->type_string = "CEX8A";
zc->speed_rating = CEX8A_SPEED_IDX;
/* wrong user space type, just for compatibility
* with the ZCRYPT_STATUS_MASK ioctl.
*/
zc->user_space_type = ZCRYPT_CEX6;
}
zc->min_mod_size = CEX4A_MIN_MOD_SIZE;
if (ap_test_bit(&ac->functions, AP_FUNC_MEX4K) &&
ap_test_bit(&ac->functions, AP_FUNC_CRT4K)) {
zc->max_mod_size = CEX4A_MAX_MOD_SIZE_4K;
zc->max_exp_bit_length =
CEX4A_MAX_MOD_SIZE_4K;
} else {
zc->max_mod_size = CEX4A_MAX_MOD_SIZE_2K;
zc->max_exp_bit_length =
CEX4A_MAX_MOD_SIZE_2K;
}
} else if (ap_test_bit(&ac->functions, AP_FUNC_COPRO)) {
if (ac->ap_dev.device_type == AP_DEVICE_TYPE_CEX4) {
zc->type_string = "CEX4C";
zc->speed_rating = CEX4C_SPEED_IDX;
/* wrong user space type, must be CEX3C
* just keep it for cca compatibility
*/
zc->user_space_type = ZCRYPT_CEX3C;
} else if (ac->ap_dev.device_type == AP_DEVICE_TYPE_CEX5) {
zc->type_string = "CEX5C";
zc->speed_rating = CEX5C_SPEED_IDX;
/* wrong user space type, must be CEX3C
* just keep it for cca compatibility
*/
zc->user_space_type = ZCRYPT_CEX3C;
} else if (ac->ap_dev.device_type == AP_DEVICE_TYPE_CEX6) {
zc->type_string = "CEX6C";
zc->speed_rating = CEX6C_SPEED_IDX;
/* wrong user space type, must be CEX3C
* just keep it for cca compatibility
*/
zc->user_space_type = ZCRYPT_CEX3C;
} else if (ac->ap_dev.device_type == AP_DEVICE_TYPE_CEX7) {
zc->type_string = "CEX7C";
zc->speed_rating = CEX7C_SPEED_IDX;
/* wrong user space type, must be CEX3C
* just keep it for cca compatibility
*/
zc->user_space_type = ZCRYPT_CEX3C;
} else {
zc->type_string = "CEX8C";
zc->speed_rating = CEX8C_SPEED_IDX;
/* wrong user space type, must be CEX3C
* just keep it for cca compatibility
*/
zc->user_space_type = ZCRYPT_CEX3C;
}
zc->min_mod_size = CEX4C_MIN_MOD_SIZE;
zc->max_mod_size = CEX4C_MAX_MOD_SIZE;
zc->max_exp_bit_length = CEX4C_MAX_MOD_SIZE;
} else if (ap_test_bit(&ac->functions, AP_FUNC_EP11)) {
if (ac->ap_dev.device_type == AP_DEVICE_TYPE_CEX4) {
zc->type_string = "CEX4P";
zc->user_space_type = ZCRYPT_CEX4;
zc->speed_rating = CEX4P_SPEED_IDX;
} else if (ac->ap_dev.device_type == AP_DEVICE_TYPE_CEX5) {
zc->type_string = "CEX5P";
zc->user_space_type = ZCRYPT_CEX5;
zc->speed_rating = CEX5P_SPEED_IDX;
} else if (ac->ap_dev.device_type == AP_DEVICE_TYPE_CEX6) {
zc->type_string = "CEX6P";
zc->user_space_type = ZCRYPT_CEX6;
zc->speed_rating = CEX6P_SPEED_IDX;
} else if (ac->ap_dev.device_type == AP_DEVICE_TYPE_CEX7) {
zc->type_string = "CEX7P";
zc->speed_rating = CEX7P_SPEED_IDX;
/* wrong user space type, just for compatibility
* with the ZCRYPT_STATUS_MASK ioctl.
*/
zc->user_space_type = ZCRYPT_CEX6;
} else {
zc->type_string = "CEX8P";
zc->speed_rating = CEX8P_SPEED_IDX;
/* wrong user space type, just for compatibility
* with the ZCRYPT_STATUS_MASK ioctl.
*/
zc->user_space_type = ZCRYPT_CEX6;
}
zc->min_mod_size = CEX4C_MIN_MOD_SIZE;
zc->max_mod_size = CEX4C_MAX_MOD_SIZE;
zc->max_exp_bit_length = CEX4C_MAX_MOD_SIZE;
} else {
zcrypt_card_free(zc);
return -ENODEV;
}
zc->online = 1;
rc = zcrypt_card_register(zc);
if (rc) {
zcrypt_card_free(zc);
return rc;
}
if (ap_test_bit(&ac->functions, AP_FUNC_COPRO)) {
rc = sysfs_create_group(&ap_dev->device.kobj,
&cca_card_attr_grp);
if (rc) {
zcrypt_card_unregister(zc);
zcrypt_card_free(zc);
}
} else if (ap_test_bit(&ac->functions, AP_FUNC_EP11)) {
rc = sysfs_create_group(&ap_dev->device.kobj,
&ep11_card_attr_grp);
if (rc) {
zcrypt_card_unregister(zc);
zcrypt_card_free(zc);
}
}
return rc;
}
/*
* This is called to remove the CEX[45678] card driver
* information if an AP card device is removed.
*/
static void zcrypt_cex4_card_remove(struct ap_device *ap_dev)
{
struct zcrypt_card *zc = dev_get_drvdata(&ap_dev->device);
struct ap_card *ac = to_ap_card(&ap_dev->device);
if (ap_test_bit(&ac->functions, AP_FUNC_COPRO))
sysfs_remove_group(&ap_dev->device.kobj, &cca_card_attr_grp);
else if (ap_test_bit(&ac->functions, AP_FUNC_EP11))
sysfs_remove_group(&ap_dev->device.kobj, &ep11_card_attr_grp);
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 CEX[45678] 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(aq->card->maxmsgsize);
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(aq->card->maxmsgsize);
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(aq->card->maxmsgsize);
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;
dev_set_drvdata(&ap_dev->device, zq);
rc = zcrypt_queue_register(zq);
if (rc) {
zcrypt_queue_free(zq);
return rc;
}
if (ap_test_bit(&aq->card->functions, AP_FUNC_COPRO)) {
rc = sysfs_create_group(&ap_dev->device.kobj,
&cca_queue_attr_grp);
if (rc) {
zcrypt_queue_unregister(zq);
zcrypt_queue_free(zq);
}
} else if (ap_test_bit(&aq->card->functions, AP_FUNC_EP11)) {
rc = sysfs_create_group(&ap_dev->device.kobj,
&ep11_queue_attr_grp);
if (rc) {
zcrypt_queue_unregister(zq);
zcrypt_queue_free(zq);
}
}
return rc;
}
/*
* This is called to remove the CEX[45678] queue driver
* information if an AP queue device is removed.
*/
static void zcrypt_cex4_queue_remove(struct ap_device *ap_dev)
{
struct zcrypt_queue *zq = dev_get_drvdata(&ap_dev->device);
struct ap_queue *aq = to_ap_queue(&ap_dev->device);
if (ap_test_bit(&aq->card->functions, AP_FUNC_COPRO))
sysfs_remove_group(&ap_dev->device.kobj, &cca_queue_attr_grp);
else if (ap_test_bit(&aq->card->functions, AP_FUNC_EP11))
sysfs_remove_group(&ap_dev->device.kobj, &ep11_queue_attr_grp);
zcrypt_queue_unregister(zq);
}
static struct ap_driver zcrypt_cex4_queue_driver = {
.probe = zcrypt_cex4_queue_probe,
.remove = zcrypt_cex4_queue_remove,
.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);
Reference in New Issue View Git Blame Copy Permalink