bca79b9f56
Move comment description to the same line as the function name.
This is to fix the following warning when compiling the QAT driver
using the clang compiler with CC=clang W=2:
drivers/crypto/intel/qat/qat_common/qat_crypto.c:108: warning: missing initial short description on line:
* qat_crypto_vf_dev_config()
Signed-off-by: Adam Guerin <adam.guerin@intel.com>
Reviewed-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
287 lines
6.7 KiB
C
287 lines
6.7 KiB
C
// SPDX-License-Identifier: (BSD-3-Clause OR GPL-2.0-only)
|
|
/* Copyright(c) 2014 - 2020 Intel Corporation */
|
|
#include <linux/module.h>
|
|
#include <linux/slab.h>
|
|
#include "adf_accel_devices.h"
|
|
#include "adf_common_drv.h"
|
|
#include "adf_transport.h"
|
|
#include "adf_cfg.h"
|
|
#include "adf_cfg_strings.h"
|
|
#include "adf_gen2_hw_data.h"
|
|
#include "qat_crypto.h"
|
|
#include "icp_qat_fw.h"
|
|
|
|
#define SEC ADF_KERNEL_SEC
|
|
|
|
static struct service_hndl qat_crypto;
|
|
|
|
void qat_crypto_put_instance(struct qat_crypto_instance *inst)
|
|
{
|
|
atomic_dec(&inst->refctr);
|
|
adf_dev_put(inst->accel_dev);
|
|
}
|
|
|
|
static int qat_crypto_free_instances(struct adf_accel_dev *accel_dev)
|
|
{
|
|
struct qat_crypto_instance *inst, *tmp;
|
|
int i;
|
|
|
|
list_for_each_entry_safe(inst, tmp, &accel_dev->crypto_list, list) {
|
|
for (i = 0; i < atomic_read(&inst->refctr); i++)
|
|
qat_crypto_put_instance(inst);
|
|
|
|
if (inst->sym_tx)
|
|
adf_remove_ring(inst->sym_tx);
|
|
|
|
if (inst->sym_rx)
|
|
adf_remove_ring(inst->sym_rx);
|
|
|
|
if (inst->pke_tx)
|
|
adf_remove_ring(inst->pke_tx);
|
|
|
|
if (inst->pke_rx)
|
|
adf_remove_ring(inst->pke_rx);
|
|
|
|
list_del(&inst->list);
|
|
kfree(inst);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
struct qat_crypto_instance *qat_crypto_get_instance_node(int node)
|
|
{
|
|
struct adf_accel_dev *accel_dev = NULL, *tmp_dev;
|
|
struct qat_crypto_instance *inst = NULL, *tmp_inst;
|
|
unsigned long best = ~0;
|
|
|
|
list_for_each_entry(tmp_dev, adf_devmgr_get_head(), list) {
|
|
unsigned long ctr;
|
|
|
|
if ((node == dev_to_node(&GET_DEV(tmp_dev)) ||
|
|
dev_to_node(&GET_DEV(tmp_dev)) < 0) &&
|
|
adf_dev_started(tmp_dev) &&
|
|
!list_empty(&tmp_dev->crypto_list)) {
|
|
ctr = atomic_read(&tmp_dev->ref_count);
|
|
if (best > ctr) {
|
|
accel_dev = tmp_dev;
|
|
best = ctr;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!accel_dev) {
|
|
pr_debug_ratelimited("QAT: Could not find a device on node %d\n", node);
|
|
/* Get any started device */
|
|
list_for_each_entry(tmp_dev, adf_devmgr_get_head(), list) {
|
|
if (adf_dev_started(tmp_dev) &&
|
|
!list_empty(&tmp_dev->crypto_list)) {
|
|
accel_dev = tmp_dev;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!accel_dev)
|
|
return NULL;
|
|
|
|
best = ~0;
|
|
list_for_each_entry(tmp_inst, &accel_dev->crypto_list, list) {
|
|
unsigned long ctr;
|
|
|
|
ctr = atomic_read(&tmp_inst->refctr);
|
|
if (best > ctr) {
|
|
inst = tmp_inst;
|
|
best = ctr;
|
|
}
|
|
}
|
|
if (inst) {
|
|
if (adf_dev_get(accel_dev)) {
|
|
dev_err(&GET_DEV(accel_dev), "Could not increment dev refctr\n");
|
|
return NULL;
|
|
}
|
|
atomic_inc(&inst->refctr);
|
|
}
|
|
return inst;
|
|
}
|
|
|
|
/**
|
|
* qat_crypto_vf_dev_config() - create dev config required to create
|
|
* crypto inst.
|
|
*
|
|
* @accel_dev: Pointer to acceleration device.
|
|
*
|
|
* Function creates device configuration required to create
|
|
* asym, sym or, crypto instances
|
|
*
|
|
* Return: 0 on success, error code otherwise.
|
|
*/
|
|
int qat_crypto_vf_dev_config(struct adf_accel_dev *accel_dev)
|
|
{
|
|
u16 ring_to_svc_map = GET_HW_DATA(accel_dev)->ring_to_svc_map;
|
|
|
|
if (ring_to_svc_map != ADF_GEN2_DEFAULT_RING_TO_SRV_MAP) {
|
|
dev_err(&GET_DEV(accel_dev),
|
|
"Unsupported ring/service mapping present on PF");
|
|
return -EFAULT;
|
|
}
|
|
|
|
return GET_HW_DATA(accel_dev)->dev_config(accel_dev);
|
|
}
|
|
|
|
static int qat_crypto_create_instances(struct adf_accel_dev *accel_dev)
|
|
{
|
|
unsigned long num_inst, num_msg_sym, num_msg_asym;
|
|
char key[ADF_CFG_MAX_KEY_LEN_IN_BYTES];
|
|
char val[ADF_CFG_MAX_VAL_LEN_IN_BYTES];
|
|
unsigned long sym_bank, asym_bank;
|
|
struct qat_crypto_instance *inst;
|
|
int msg_size;
|
|
int ret;
|
|
int i;
|
|
|
|
INIT_LIST_HEAD(&accel_dev->crypto_list);
|
|
ret = adf_cfg_get_param_value(accel_dev, SEC, ADF_NUM_CY, val);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = kstrtoul(val, 0, &num_inst);
|
|
if (ret)
|
|
return ret;
|
|
|
|
for (i = 0; i < num_inst; i++) {
|
|
inst = kzalloc_node(sizeof(*inst), GFP_KERNEL,
|
|
dev_to_node(&GET_DEV(accel_dev)));
|
|
if (!inst) {
|
|
ret = -ENOMEM;
|
|
goto err;
|
|
}
|
|
|
|
list_add_tail(&inst->list, &accel_dev->crypto_list);
|
|
inst->id = i;
|
|
atomic_set(&inst->refctr, 0);
|
|
inst->accel_dev = accel_dev;
|
|
|
|
snprintf(key, sizeof(key), ADF_CY "%d" ADF_RING_SYM_BANK_NUM, i);
|
|
ret = adf_cfg_get_param_value(accel_dev, SEC, key, val);
|
|
if (ret)
|
|
goto err;
|
|
|
|
ret = kstrtoul(val, 10, &sym_bank);
|
|
if (ret)
|
|
goto err;
|
|
|
|
snprintf(key, sizeof(key), ADF_CY "%d" ADF_RING_ASYM_BANK_NUM, i);
|
|
ret = adf_cfg_get_param_value(accel_dev, SEC, key, val);
|
|
if (ret)
|
|
goto err;
|
|
|
|
ret = kstrtoul(val, 10, &asym_bank);
|
|
if (ret)
|
|
goto err;
|
|
|
|
snprintf(key, sizeof(key), ADF_CY "%d" ADF_RING_SYM_SIZE, i);
|
|
ret = adf_cfg_get_param_value(accel_dev, SEC, key, val);
|
|
if (ret)
|
|
goto err;
|
|
|
|
ret = kstrtoul(val, 10, &num_msg_sym);
|
|
if (ret)
|
|
goto err;
|
|
|
|
num_msg_sym = num_msg_sym >> 1;
|
|
|
|
snprintf(key, sizeof(key), ADF_CY "%d" ADF_RING_ASYM_SIZE, i);
|
|
ret = adf_cfg_get_param_value(accel_dev, SEC, key, val);
|
|
if (ret)
|
|
goto err;
|
|
|
|
ret = kstrtoul(val, 10, &num_msg_asym);
|
|
if (ret)
|
|
goto err;
|
|
num_msg_asym = num_msg_asym >> 1;
|
|
|
|
msg_size = ICP_QAT_FW_REQ_DEFAULT_SZ;
|
|
snprintf(key, sizeof(key), ADF_CY "%d" ADF_RING_SYM_TX, i);
|
|
ret = adf_create_ring(accel_dev, SEC, sym_bank, num_msg_sym,
|
|
msg_size, key, NULL, 0, &inst->sym_tx);
|
|
if (ret)
|
|
goto err;
|
|
|
|
msg_size = msg_size >> 1;
|
|
snprintf(key, sizeof(key), ADF_CY "%d" ADF_RING_ASYM_TX, i);
|
|
ret = adf_create_ring(accel_dev, SEC, asym_bank, num_msg_asym,
|
|
msg_size, key, NULL, 0, &inst->pke_tx);
|
|
if (ret)
|
|
goto err;
|
|
|
|
msg_size = ICP_QAT_FW_RESP_DEFAULT_SZ;
|
|
snprintf(key, sizeof(key), ADF_CY "%d" ADF_RING_SYM_RX, i);
|
|
ret = adf_create_ring(accel_dev, SEC, sym_bank, num_msg_sym,
|
|
msg_size, key, qat_alg_callback, 0,
|
|
&inst->sym_rx);
|
|
if (ret)
|
|
goto err;
|
|
|
|
snprintf(key, sizeof(key), ADF_CY "%d" ADF_RING_ASYM_RX, i);
|
|
ret = adf_create_ring(accel_dev, SEC, asym_bank, num_msg_asym,
|
|
msg_size, key, qat_alg_asym_callback, 0,
|
|
&inst->pke_rx);
|
|
if (ret)
|
|
goto err;
|
|
|
|
INIT_LIST_HEAD(&inst->backlog.list);
|
|
spin_lock_init(&inst->backlog.lock);
|
|
}
|
|
return 0;
|
|
err:
|
|
qat_crypto_free_instances(accel_dev);
|
|
return ret;
|
|
}
|
|
|
|
static int qat_crypto_init(struct adf_accel_dev *accel_dev)
|
|
{
|
|
if (qat_crypto_create_instances(accel_dev))
|
|
return -EFAULT;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int qat_crypto_shutdown(struct adf_accel_dev *accel_dev)
|
|
{
|
|
return qat_crypto_free_instances(accel_dev);
|
|
}
|
|
|
|
static int qat_crypto_event_handler(struct adf_accel_dev *accel_dev,
|
|
enum adf_event event)
|
|
{
|
|
int ret;
|
|
|
|
switch (event) {
|
|
case ADF_EVENT_INIT:
|
|
ret = qat_crypto_init(accel_dev);
|
|
break;
|
|
case ADF_EVENT_SHUTDOWN:
|
|
ret = qat_crypto_shutdown(accel_dev);
|
|
break;
|
|
case ADF_EVENT_RESTARTING:
|
|
case ADF_EVENT_RESTARTED:
|
|
case ADF_EVENT_START:
|
|
case ADF_EVENT_STOP:
|
|
default:
|
|
ret = 0;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
int qat_crypto_register(void)
|
|
{
|
|
memset(&qat_crypto, 0, sizeof(qat_crypto));
|
|
qat_crypto.event_hld = qat_crypto_event_handler;
|
|
qat_crypto.name = "qat_crypto";
|
|
return adf_service_register(&qat_crypto);
|
|
}
|
|
|
|
int qat_crypto_unregister(void)
|
|
{
|
|
return adf_service_unregister(&qat_crypto);
|
|
}
|