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Diffstat (limited to 'drivers/crypto/octeontx/otx_cryptodev_ops.c')
-rw-r--r--drivers/crypto/octeontx/otx_cryptodev_ops.c531
1 files changed, 531 insertions, 0 deletions
diff --git a/drivers/crypto/octeontx/otx_cryptodev_ops.c b/drivers/crypto/octeontx/otx_cryptodev_ops.c
new file mode 100644
index 00000000..23f96591
--- /dev/null
+++ b/drivers/crypto/octeontx/otx_cryptodev_ops.c
@@ -0,0 +1,531 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2018 Cavium, Inc
+ */
+
+#include <rte_alarm.h>
+#include <rte_bus_pci.h>
+#include <rte_cryptodev.h>
+#include <rte_cryptodev_pmd.h>
+#include <rte_malloc.h>
+
+#include "cpt_pmd_logs.h"
+#include "cpt_pmd_ops_helper.h"
+#include "cpt_ucode.h"
+#include "cpt_request_mgr.h"
+
+#include "otx_cryptodev.h"
+#include "otx_cryptodev_capabilities.h"
+#include "otx_cryptodev_hw_access.h"
+#include "otx_cryptodev_ops.h"
+
+static int otx_cryptodev_probe_count;
+static rte_spinlock_t otx_probe_count_lock = RTE_SPINLOCK_INITIALIZER;
+
+static struct rte_mempool *otx_cpt_meta_pool;
+static int otx_cpt_op_mlen;
+static int otx_cpt_op_sb_mlen;
+
+/* Forward declarations */
+
+static int
+otx_cpt_que_pair_release(struct rte_cryptodev *dev, uint16_t que_pair_id);
+
+/*
+ * Initializes global variables used by fast-path code
+ *
+ * @return
+ * - 0 on success, errcode on error
+ */
+static int
+init_global_resources(void)
+{
+ /* Get meta len for scatter gather mode */
+ otx_cpt_op_mlen = cpt_pmd_ops_helper_get_mlen_sg_mode();
+
+ /* Extra 4B saved for future considerations */
+ otx_cpt_op_mlen += 4 * sizeof(uint64_t);
+
+ otx_cpt_meta_pool = rte_mempool_create("cpt_metabuf-pool", 4096 * 16,
+ otx_cpt_op_mlen, 512, 0,
+ NULL, NULL, NULL, NULL,
+ SOCKET_ID_ANY, 0);
+ if (!otx_cpt_meta_pool) {
+ CPT_LOG_ERR("cpt metabuf pool not created");
+ return -ENOMEM;
+ }
+
+ /* Get meta len for direct mode */
+ otx_cpt_op_sb_mlen = cpt_pmd_ops_helper_get_mlen_direct_mode();
+
+ /* Extra 4B saved for future considerations */
+ otx_cpt_op_sb_mlen += 4 * sizeof(uint64_t);
+
+ return 0;
+}
+
+void
+cleanup_global_resources(void)
+{
+ /* Take lock */
+ rte_spinlock_lock(&otx_probe_count_lock);
+
+ /* Decrement the cryptodev count */
+ otx_cryptodev_probe_count--;
+
+ /* Free buffers */
+ if (otx_cpt_meta_pool && otx_cryptodev_probe_count == 0)
+ rte_mempool_free(otx_cpt_meta_pool);
+
+ /* Free lock */
+ rte_spinlock_unlock(&otx_probe_count_lock);
+}
+
+/* Alarm routines */
+
+static void
+otx_cpt_alarm_cb(void *arg)
+{
+ struct cpt_vf *cptvf = arg;
+ otx_cpt_poll_misc(cptvf);
+ rte_eal_alarm_set(CPT_INTR_POLL_INTERVAL_MS * 1000,
+ otx_cpt_alarm_cb, cptvf);
+}
+
+static int
+otx_cpt_periodic_alarm_start(void *arg)
+{
+ return rte_eal_alarm_set(CPT_INTR_POLL_INTERVAL_MS * 1000,
+ otx_cpt_alarm_cb, arg);
+}
+
+static int
+otx_cpt_periodic_alarm_stop(void *arg)
+{
+ return rte_eal_alarm_cancel(otx_cpt_alarm_cb, arg);
+}
+
+/* PMD ops */
+
+static int
+otx_cpt_dev_config(struct rte_cryptodev *dev __rte_unused,
+ struct rte_cryptodev_config *config __rte_unused)
+{
+ CPT_PMD_INIT_FUNC_TRACE();
+ return 0;
+}
+
+static int
+otx_cpt_dev_start(struct rte_cryptodev *c_dev)
+{
+ void *cptvf = c_dev->data->dev_private;
+
+ CPT_PMD_INIT_FUNC_TRACE();
+
+ return otx_cpt_start_device(cptvf);
+}
+
+static void
+otx_cpt_dev_stop(struct rte_cryptodev *c_dev)
+{
+ void *cptvf = c_dev->data->dev_private;
+
+ CPT_PMD_INIT_FUNC_TRACE();
+
+ otx_cpt_stop_device(cptvf);
+}
+
+static int
+otx_cpt_dev_close(struct rte_cryptodev *c_dev)
+{
+ void *cptvf = c_dev->data->dev_private;
+ int i, ret;
+
+ CPT_PMD_INIT_FUNC_TRACE();
+
+ for (i = 0; i < c_dev->data->nb_queue_pairs; i++) {
+ ret = otx_cpt_que_pair_release(c_dev, i);
+ if (ret)
+ return ret;
+ }
+
+ otx_cpt_periodic_alarm_stop(cptvf);
+ otx_cpt_deinit_device(cptvf);
+
+ return 0;
+}
+
+static void
+otx_cpt_dev_info_get(struct rte_cryptodev *dev, struct rte_cryptodev_info *info)
+{
+ CPT_PMD_INIT_FUNC_TRACE();
+ if (info != NULL) {
+ info->max_nb_queue_pairs = CPT_NUM_QS_PER_VF;
+ info->feature_flags = dev->feature_flags;
+ info->capabilities = otx_get_capabilities();
+ info->sym.max_nb_sessions = 0;
+ info->driver_id = otx_cryptodev_driver_id;
+ info->min_mbuf_headroom_req = OTX_CPT_MIN_HEADROOM_REQ;
+ info->min_mbuf_tailroom_req = OTX_CPT_MIN_TAILROOM_REQ;
+ }
+}
+
+static void
+otx_cpt_stats_get(struct rte_cryptodev *dev __rte_unused,
+ struct rte_cryptodev_stats *stats __rte_unused)
+{
+ CPT_PMD_INIT_FUNC_TRACE();
+}
+
+static void
+otx_cpt_stats_reset(struct rte_cryptodev *dev __rte_unused)
+{
+ CPT_PMD_INIT_FUNC_TRACE();
+}
+
+static int
+otx_cpt_que_pair_setup(struct rte_cryptodev *dev,
+ uint16_t que_pair_id,
+ const struct rte_cryptodev_qp_conf *qp_conf,
+ int socket_id __rte_unused,
+ struct rte_mempool *session_pool __rte_unused)
+{
+ void *cptvf = dev->data->dev_private;
+ struct cpt_instance *instance = NULL;
+ struct rte_pci_device *pci_dev;
+ int ret = -1;
+
+ CPT_PMD_INIT_FUNC_TRACE();
+
+ if (dev->data->queue_pairs[que_pair_id] != NULL) {
+ ret = otx_cpt_que_pair_release(dev, que_pair_id);
+ if (ret)
+ return ret;
+ }
+
+ if (qp_conf->nb_descriptors > DEFAULT_CMD_QLEN) {
+ CPT_LOG_INFO("Number of descriptors too big %d, using default "
+ "queue length of %d", qp_conf->nb_descriptors,
+ DEFAULT_CMD_QLEN);
+ }
+
+ pci_dev = RTE_DEV_TO_PCI(dev->device);
+
+ if (pci_dev->mem_resource[0].addr == NULL) {
+ CPT_LOG_ERR("PCI mem address null");
+ return -EIO;
+ }
+
+ ret = otx_cpt_get_resource(cptvf, 0, &instance);
+ if (ret != 0) {
+ CPT_LOG_ERR("Error getting instance handle from device %s : "
+ "ret = %d", dev->data->name, ret);
+ return ret;
+ }
+
+ instance->queue_id = que_pair_id;
+ dev->data->queue_pairs[que_pair_id] = instance;
+
+ return 0;
+}
+
+static int
+otx_cpt_que_pair_release(struct rte_cryptodev *dev, uint16_t que_pair_id)
+{
+ struct cpt_instance *instance = dev->data->queue_pairs[que_pair_id];
+ int ret;
+
+ CPT_PMD_INIT_FUNC_TRACE();
+
+ ret = otx_cpt_put_resource(instance);
+ if (ret != 0) {
+ CPT_LOG_ERR("Error putting instance handle of device %s : "
+ "ret = %d", dev->data->name, ret);
+ return ret;
+ }
+
+ dev->data->queue_pairs[que_pair_id] = NULL;
+
+ return 0;
+}
+
+static unsigned int
+otx_cpt_get_session_size(struct rte_cryptodev *dev __rte_unused)
+{
+ return cpt_get_session_size();
+}
+
+static void
+otx_cpt_session_init(void *sym_sess, uint8_t driver_id)
+{
+ struct rte_cryptodev_sym_session *sess = sym_sess;
+ struct cpt_sess_misc *cpt_sess =
+ (struct cpt_sess_misc *) get_sym_session_private_data(sess, driver_id);
+
+ CPT_PMD_INIT_FUNC_TRACE();
+ cpt_sess->ctx_dma_addr = rte_mempool_virt2iova(cpt_sess) +
+ sizeof(struct cpt_sess_misc);
+}
+
+static int
+otx_cpt_session_cfg(struct rte_cryptodev *dev,
+ struct rte_crypto_sym_xform *xform,
+ struct rte_cryptodev_sym_session *sess,
+ struct rte_mempool *mempool)
+{
+ struct rte_crypto_sym_xform *chain;
+ void *sess_private_data = NULL;
+
+ CPT_PMD_INIT_FUNC_TRACE();
+
+ if (cpt_is_algo_supported(xform))
+ goto err;
+
+ if (unlikely(sess == NULL)) {
+ CPT_LOG_ERR("invalid session struct");
+ return -EINVAL;
+ }
+
+ if (rte_mempool_get(mempool, &sess_private_data)) {
+ CPT_LOG_ERR("Could not allocate sess_private_data");
+ return -ENOMEM;
+ }
+
+ chain = xform;
+ while (chain) {
+ switch (chain->type) {
+ case RTE_CRYPTO_SYM_XFORM_AEAD:
+ if (fill_sess_aead(chain, sess_private_data))
+ goto err;
+ break;
+ case RTE_CRYPTO_SYM_XFORM_CIPHER:
+ if (fill_sess_cipher(chain, sess_private_data))
+ goto err;
+ break;
+ case RTE_CRYPTO_SYM_XFORM_AUTH:
+ if (chain->auth.algo == RTE_CRYPTO_AUTH_AES_GMAC) {
+ if (fill_sess_gmac(chain, sess_private_data))
+ goto err;
+ } else {
+ if (fill_sess_auth(chain, sess_private_data))
+ goto err;
+ }
+ break;
+ default:
+ CPT_LOG_ERR("Invalid crypto xform type");
+ break;
+ }
+ chain = chain->next;
+ }
+ set_sym_session_private_data(sess, dev->driver_id, sess_private_data);
+ otx_cpt_session_init(sess, dev->driver_id);
+ return 0;
+
+err:
+ if (sess_private_data)
+ rte_mempool_put(mempool, sess_private_data);
+ return -EPERM;
+}
+
+static void
+otx_cpt_session_clear(struct rte_cryptodev *dev,
+ struct rte_cryptodev_sym_session *sess)
+{
+ void *sess_priv = get_sym_session_private_data(sess, dev->driver_id);
+
+ CPT_PMD_INIT_FUNC_TRACE();
+ if (sess_priv) {
+ memset(sess_priv, 0, otx_cpt_get_session_size(dev));
+ struct rte_mempool *sess_mp = rte_mempool_from_obj(sess_priv);
+ set_sym_session_private_data(sess, dev->driver_id, NULL);
+ rte_mempool_put(sess_mp, sess_priv);
+ }
+}
+
+static uint16_t
+otx_cpt_pkt_enqueue(void *qptr, struct rte_crypto_op **ops, uint16_t nb_ops)
+{
+ struct cpt_instance *instance = (struct cpt_instance *)qptr;
+ uint16_t count = 0;
+ int ret;
+ struct cpt_vf *cptvf = (struct cpt_vf *)instance;
+ struct pending_queue *pqueue = &cptvf->pqueue;
+
+ count = DEFAULT_CMD_QLEN - pqueue->pending_count;
+ if (nb_ops > count)
+ nb_ops = count;
+
+ count = 0;
+ while (likely(count < nb_ops)) {
+ ret = cpt_pmd_crypto_operation(instance, ops[count], pqueue,
+ otx_cryptodev_driver_id);
+ if (unlikely(ret))
+ break;
+ count++;
+ }
+ otx_cpt_ring_dbell(instance, count);
+ return count;
+}
+
+static uint16_t
+otx_cpt_pkt_dequeue(void *qptr, struct rte_crypto_op **ops, uint16_t nb_ops)
+{
+ struct cpt_instance *instance = (struct cpt_instance *)qptr;
+ struct cpt_vf *cptvf = (struct cpt_vf *)instance;
+ struct pending_queue *pqueue = &cptvf->pqueue;
+ uint16_t nb_completed, i = 0;
+ uint8_t compcode[nb_ops];
+
+ nb_completed = cpt_dequeue_burst(instance, nb_ops,
+ (void **)ops, compcode, pqueue);
+ while (likely(i < nb_completed)) {
+ struct rte_crypto_op *cop;
+ void *metabuf;
+ uintptr_t *rsp;
+ uint8_t status;
+
+ rsp = (void *)ops[i];
+ status = compcode[i];
+ if (likely((i + 1) < nb_completed))
+ rte_prefetch0(ops[i+1]);
+ metabuf = (void *)rsp[0];
+ cop = (void *)rsp[1];
+
+ ops[i] = cop;
+
+ if (likely(status == 0)) {
+ if (likely(!rsp[2]))
+ cop->status =
+ RTE_CRYPTO_OP_STATUS_SUCCESS;
+ else
+ compl_auth_verify(cop, (uint8_t *)rsp[2],
+ rsp[3]);
+ } else if (status == ERR_GC_ICV_MISCOMPARE) {
+ /*auth data mismatch */
+ cop->status = RTE_CRYPTO_OP_STATUS_AUTH_FAILED;
+ } else {
+ cop->status = RTE_CRYPTO_OP_STATUS_ERROR;
+ }
+ free_op_meta(metabuf, cptvf->meta_info.cptvf_meta_pool);
+ i++;
+ }
+ return nb_completed;
+}
+
+static struct rte_cryptodev_ops cptvf_ops = {
+ /* Device related operations */
+ .dev_configure = otx_cpt_dev_config,
+ .dev_start = otx_cpt_dev_start,
+ .dev_stop = otx_cpt_dev_stop,
+ .dev_close = otx_cpt_dev_close,
+ .dev_infos_get = otx_cpt_dev_info_get,
+
+ .stats_get = otx_cpt_stats_get,
+ .stats_reset = otx_cpt_stats_reset,
+ .queue_pair_setup = otx_cpt_que_pair_setup,
+ .queue_pair_release = otx_cpt_que_pair_release,
+ .queue_pair_count = NULL,
+
+ /* Crypto related operations */
+ .sym_session_get_size = otx_cpt_get_session_size,
+ .sym_session_configure = otx_cpt_session_cfg,
+ .sym_session_clear = otx_cpt_session_clear
+};
+
+static void
+otx_cpt_common_vars_init(struct cpt_vf *cptvf)
+{
+ cptvf->meta_info.cptvf_meta_pool = otx_cpt_meta_pool;
+ cptvf->meta_info.cptvf_op_mlen = otx_cpt_op_mlen;
+ cptvf->meta_info.cptvf_op_sb_mlen = otx_cpt_op_sb_mlen;
+}
+
+int
+otx_cpt_dev_create(struct rte_cryptodev *c_dev)
+{
+ struct rte_pci_device *pdev = RTE_DEV_TO_PCI(c_dev->device);
+ struct cpt_vf *cptvf = NULL;
+ void *reg_base;
+ char dev_name[32];
+ int ret;
+
+ if (pdev->mem_resource[0].phys_addr == 0ULL)
+ return -EIO;
+
+ /* for secondary processes, we don't initialise any further as primary
+ * has already done this work.
+ */
+ if (rte_eal_process_type() != RTE_PROC_PRIMARY)
+ return 0;
+
+ cptvf = rte_zmalloc_socket("otx_cryptodev_private_mem",
+ sizeof(struct cpt_vf), RTE_CACHE_LINE_SIZE,
+ rte_socket_id());
+
+ if (cptvf == NULL) {
+ CPT_LOG_ERR("Cannot allocate memory for device private data");
+ return -ENOMEM;
+ }
+
+ snprintf(dev_name, 32, "%02x:%02x.%x",
+ pdev->addr.bus, pdev->addr.devid, pdev->addr.function);
+
+ reg_base = pdev->mem_resource[0].addr;
+ if (!reg_base) {
+ CPT_LOG_ERR("Failed to map BAR0 of %s", dev_name);
+ ret = -ENODEV;
+ goto fail;
+ }
+
+ ret = otx_cpt_hw_init(cptvf, pdev, reg_base, dev_name);
+ if (ret) {
+ CPT_LOG_ERR("Failed to init cptvf %s", dev_name);
+ ret = -EIO;
+ goto fail;
+ }
+
+ /* Start off timer for mailbox interrupts */
+ otx_cpt_periodic_alarm_start(cptvf);
+
+ rte_spinlock_lock(&otx_probe_count_lock);
+ if (!otx_cryptodev_probe_count) {
+ ret = init_global_resources();
+ if (ret) {
+ rte_spinlock_unlock(&otx_probe_count_lock);
+ goto init_fail;
+ }
+ }
+ otx_cryptodev_probe_count++;
+ rte_spinlock_unlock(&otx_probe_count_lock);
+
+ /* Initialize data path variables used by common code */
+ otx_cpt_common_vars_init(cptvf);
+
+ c_dev->dev_ops = &cptvf_ops;
+
+ c_dev->enqueue_burst = otx_cpt_pkt_enqueue;
+ c_dev->dequeue_burst = otx_cpt_pkt_dequeue;
+
+ c_dev->feature_flags = RTE_CRYPTODEV_FF_SYMMETRIC_CRYPTO |
+ RTE_CRYPTODEV_FF_HW_ACCELERATED |
+ RTE_CRYPTODEV_FF_SYM_OPERATION_CHAINING |
+ RTE_CRYPTODEV_FF_IN_PLACE_SGL |
+ RTE_CRYPTODEV_FF_OOP_SGL_IN_LB_OUT |
+ RTE_CRYPTODEV_FF_OOP_SGL_IN_SGL_OUT;
+
+ /* Save dev private data */
+ c_dev->data->dev_private = cptvf;
+
+ return 0;
+
+init_fail:
+ otx_cpt_periodic_alarm_stop(cptvf);
+ otx_cpt_deinit_device(cptvf);
+
+fail:
+ if (cptvf) {
+ /* Free private data allocated */
+ rte_free(cptvf);
+ }
+
+ return ret;
+}