crypto: caam - add DPAA2-CAAM (DPSECI) backend API
Add the low-level API that allows to manage DPSECI DPAA2 objects
that sit on the Management Complex (MC) fsl-mc bus.
The API is compatible with MC firmware 10.2.0+.
Signed-off-by: Horia Geantă <horia.geanta@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
diff --git a/drivers/crypto/caam/dpseci.c b/drivers/crypto/caam/dpseci.c
new file mode 100644
index 0000000..8a68531
--- /dev/null
+++ b/drivers/crypto/caam/dpseci.c
@@ -0,0 +1,426 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
+/*
+ * Copyright 2013-2016 Freescale Semiconductor Inc.
+ * Copyright 2017-2018 NXP
+ */
+
+#include <linux/fsl/mc.h>
+#include "dpseci.h"
+#include "dpseci_cmd.h"
+
+/**
+ * dpseci_open() - Open a control session for the specified object
+ * @mc_io: Pointer to MC portal's I/O object
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
+ * @dpseci_id: DPSECI unique ID
+ * @token: Returned token; use in subsequent API calls
+ *
+ * This function can be used to open a control session for an already created
+ * object; an object may have been declared statically in the DPL
+ * or created dynamically.
+ * This function returns a unique authentication token, associated with the
+ * specific object ID and the specific MC portal; this token must be used in all
+ * subsequent commands for this specific object.
+ *
+ * Return: '0' on success, error code otherwise
+ */
+int dpseci_open(struct fsl_mc_io *mc_io, u32 cmd_flags, int dpseci_id,
+ u16 *token)
+{
+ struct fsl_mc_command cmd = { 0 };
+ struct dpseci_cmd_open *cmd_params;
+ int err;
+
+ cmd.header = mc_encode_cmd_header(DPSECI_CMDID_OPEN,
+ cmd_flags,
+ 0);
+ cmd_params = (struct dpseci_cmd_open *)cmd.params;
+ cmd_params->dpseci_id = cpu_to_le32(dpseci_id);
+ err = mc_send_command(mc_io, &cmd);
+ if (err)
+ return err;
+
+ *token = mc_cmd_hdr_read_token(&cmd);
+
+ return 0;
+}
+
+/**
+ * dpseci_close() - Close the control session of the object
+ * @mc_io: Pointer to MC portal's I/O object
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token: Token of DPSECI object
+ *
+ * After this function is called, no further operations are allowed on the
+ * object without opening a new control session.
+ *
+ * Return: '0' on success, error code otherwise
+ */
+int dpseci_close(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token)
+{
+ struct fsl_mc_command cmd = { 0 };
+
+ cmd.header = mc_encode_cmd_header(DPSECI_CMDID_CLOSE,
+ cmd_flags,
+ token);
+ return mc_send_command(mc_io, &cmd);
+}
+
+/**
+ * dpseci_enable() - Enable the DPSECI, allow sending and receiving frames
+ * @mc_io: Pointer to MC portal's I/O object
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token: Token of DPSECI object
+ *
+ * Return: '0' on success, error code otherwise
+ */
+int dpseci_enable(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token)
+{
+ struct fsl_mc_command cmd = { 0 };
+
+ cmd.header = mc_encode_cmd_header(DPSECI_CMDID_ENABLE,
+ cmd_flags,
+ token);
+ return mc_send_command(mc_io, &cmd);
+}
+
+/**
+ * dpseci_disable() - Disable the DPSECI, stop sending and receiving frames
+ * @mc_io: Pointer to MC portal's I/O object
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token: Token of DPSECI object
+ *
+ * Return: '0' on success, error code otherwise
+ */
+int dpseci_disable(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token)
+{
+ struct fsl_mc_command cmd = { 0 };
+
+ cmd.header = mc_encode_cmd_header(DPSECI_CMDID_DISABLE,
+ cmd_flags,
+ token);
+
+ return mc_send_command(mc_io, &cmd);
+}
+
+/**
+ * dpseci_is_enabled() - Check if the DPSECI is enabled.
+ * @mc_io: Pointer to MC portal's I/O object
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token: Token of DPSECI object
+ * @en: Returns '1' if object is enabled; '0' otherwise
+ *
+ * Return: '0' on success, error code otherwise
+ */
+int dpseci_is_enabled(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token,
+ int *en)
+{
+ struct fsl_mc_command cmd = { 0 };
+ struct dpseci_rsp_is_enabled *rsp_params;
+ int err;
+
+ cmd.header = mc_encode_cmd_header(DPSECI_CMDID_IS_ENABLED,
+ cmd_flags,
+ token);
+ err = mc_send_command(mc_io, &cmd);
+ if (err)
+ return err;
+
+ rsp_params = (struct dpseci_rsp_is_enabled *)cmd.params;
+ *en = dpseci_get_field(rsp_params->is_enabled, ENABLE);
+
+ return 0;
+}
+
+/**
+ * dpseci_get_attributes() - Retrieve DPSECI attributes
+ * @mc_io: Pointer to MC portal's I/O object
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token: Token of DPSECI object
+ * @attr: Returned object's attributes
+ *
+ * Return: '0' on success, error code otherwise
+ */
+int dpseci_get_attributes(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token,
+ struct dpseci_attr *attr)
+{
+ struct fsl_mc_command cmd = { 0 };
+ struct dpseci_rsp_get_attributes *rsp_params;
+ int err;
+
+ cmd.header = mc_encode_cmd_header(DPSECI_CMDID_GET_ATTR,
+ cmd_flags,
+ token);
+ err = mc_send_command(mc_io, &cmd);
+ if (err)
+ return err;
+
+ rsp_params = (struct dpseci_rsp_get_attributes *)cmd.params;
+ attr->id = le32_to_cpu(rsp_params->id);
+ attr->num_tx_queues = rsp_params->num_tx_queues;
+ attr->num_rx_queues = rsp_params->num_rx_queues;
+ attr->options = le32_to_cpu(rsp_params->options);
+
+ return 0;
+}
+
+/**
+ * dpseci_set_rx_queue() - Set Rx queue configuration
+ * @mc_io: Pointer to MC portal's I/O object
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token: Token of DPSECI object
+ * @queue: Select the queue relative to number of priorities configured at
+ * DPSECI creation; use DPSECI_ALL_QUEUES to configure all
+ * Rx queues identically.
+ * @cfg: Rx queue configuration
+ *
+ * Return: '0' on success, error code otherwise
+ */
+int dpseci_set_rx_queue(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token,
+ u8 queue, const struct dpseci_rx_queue_cfg *cfg)
+{
+ struct fsl_mc_command cmd = { 0 };
+ struct dpseci_cmd_queue *cmd_params;
+
+ cmd.header = mc_encode_cmd_header(DPSECI_CMDID_SET_RX_QUEUE,
+ cmd_flags,
+ token);
+ cmd_params = (struct dpseci_cmd_queue *)cmd.params;
+ cmd_params->dest_id = cpu_to_le32(cfg->dest_cfg.dest_id);
+ cmd_params->priority = cfg->dest_cfg.priority;
+ cmd_params->queue = queue;
+ dpseci_set_field(cmd_params->dest_type, DEST_TYPE,
+ cfg->dest_cfg.dest_type);
+ cmd_params->user_ctx = cpu_to_le64(cfg->user_ctx);
+ cmd_params->options = cpu_to_le32(cfg->options);
+ dpseci_set_field(cmd_params->order_preservation_en, ORDER_PRESERVATION,
+ cfg->order_preservation_en);
+
+ return mc_send_command(mc_io, &cmd);
+}
+
+/**
+ * dpseci_get_rx_queue() - Retrieve Rx queue attributes
+ * @mc_io: Pointer to MC portal's I/O object
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token: Token of DPSECI object
+ * @queue: Select the queue relative to number of priorities configured at
+ * DPSECI creation
+ * @attr: Returned Rx queue attributes
+ *
+ * Return: '0' on success, error code otherwise
+ */
+int dpseci_get_rx_queue(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token,
+ u8 queue, struct dpseci_rx_queue_attr *attr)
+{
+ struct fsl_mc_command cmd = { 0 };
+ struct dpseci_cmd_queue *cmd_params;
+ int err;
+
+ cmd.header = mc_encode_cmd_header(DPSECI_CMDID_GET_RX_QUEUE,
+ cmd_flags,
+ token);
+ cmd_params = (struct dpseci_cmd_queue *)cmd.params;
+ cmd_params->queue = queue;
+ err = mc_send_command(mc_io, &cmd);
+ if (err)
+ return err;
+
+ attr->dest_cfg.dest_id = le32_to_cpu(cmd_params->dest_id);
+ attr->dest_cfg.priority = cmd_params->priority;
+ attr->dest_cfg.dest_type = dpseci_get_field(cmd_params->dest_type,
+ DEST_TYPE);
+ attr->user_ctx = le64_to_cpu(cmd_params->user_ctx);
+ attr->fqid = le32_to_cpu(cmd_params->fqid);
+ attr->order_preservation_en =
+ dpseci_get_field(cmd_params->order_preservation_en,
+ ORDER_PRESERVATION);
+
+ return 0;
+}
+
+/**
+ * dpseci_get_tx_queue() - Retrieve Tx queue attributes
+ * @mc_io: Pointer to MC portal's I/O object
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token: Token of DPSECI object
+ * @queue: Select the queue relative to number of priorities configured at
+ * DPSECI creation
+ * @attr: Returned Tx queue attributes
+ *
+ * Return: '0' on success, error code otherwise
+ */
+int dpseci_get_tx_queue(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token,
+ u8 queue, struct dpseci_tx_queue_attr *attr)
+{
+ struct fsl_mc_command cmd = { 0 };
+ struct dpseci_cmd_queue *cmd_params;
+ struct dpseci_rsp_get_tx_queue *rsp_params;
+ int err;
+
+ cmd.header = mc_encode_cmd_header(DPSECI_CMDID_GET_TX_QUEUE,
+ cmd_flags,
+ token);
+ cmd_params = (struct dpseci_cmd_queue *)cmd.params;
+ cmd_params->queue = queue;
+ err = mc_send_command(mc_io, &cmd);
+ if (err)
+ return err;
+
+ rsp_params = (struct dpseci_rsp_get_tx_queue *)cmd.params;
+ attr->fqid = le32_to_cpu(rsp_params->fqid);
+ attr->priority = rsp_params->priority;
+
+ return 0;
+}
+
+/**
+ * dpseci_get_sec_attr() - Retrieve SEC accelerator attributes
+ * @mc_io: Pointer to MC portal's I/O object
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token: Token of DPSECI object
+ * @attr: Returned SEC attributes
+ *
+ * Return: '0' on success, error code otherwise
+ */
+int dpseci_get_sec_attr(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token,
+ struct dpseci_sec_attr *attr)
+{
+ struct fsl_mc_command cmd = { 0 };
+ struct dpseci_rsp_get_sec_attr *rsp_params;
+ int err;
+
+ cmd.header = mc_encode_cmd_header(DPSECI_CMDID_GET_SEC_ATTR,
+ cmd_flags,
+ token);
+ err = mc_send_command(mc_io, &cmd);
+ if (err)
+ return err;
+
+ rsp_params = (struct dpseci_rsp_get_sec_attr *)cmd.params;
+ attr->ip_id = le16_to_cpu(rsp_params->ip_id);
+ attr->major_rev = rsp_params->major_rev;
+ attr->minor_rev = rsp_params->minor_rev;
+ attr->era = rsp_params->era;
+ attr->deco_num = rsp_params->deco_num;
+ attr->zuc_auth_acc_num = rsp_params->zuc_auth_acc_num;
+ attr->zuc_enc_acc_num = rsp_params->zuc_enc_acc_num;
+ attr->snow_f8_acc_num = rsp_params->snow_f8_acc_num;
+ attr->snow_f9_acc_num = rsp_params->snow_f9_acc_num;
+ attr->crc_acc_num = rsp_params->crc_acc_num;
+ attr->pk_acc_num = rsp_params->pk_acc_num;
+ attr->kasumi_acc_num = rsp_params->kasumi_acc_num;
+ attr->rng_acc_num = rsp_params->rng_acc_num;
+ attr->md_acc_num = rsp_params->md_acc_num;
+ attr->arc4_acc_num = rsp_params->arc4_acc_num;
+ attr->des_acc_num = rsp_params->des_acc_num;
+ attr->aes_acc_num = rsp_params->aes_acc_num;
+ attr->ccha_acc_num = rsp_params->ccha_acc_num;
+ attr->ptha_acc_num = rsp_params->ptha_acc_num;
+
+ return 0;
+}
+
+/**
+ * dpseci_get_api_version() - Get Data Path SEC Interface API version
+ * @mc_io: Pointer to MC portal's I/O object
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
+ * @major_ver: Major version of data path sec API
+ * @minor_ver: Minor version of data path sec API
+ *
+ * Return: '0' on success, error code otherwise
+ */
+int dpseci_get_api_version(struct fsl_mc_io *mc_io, u32 cmd_flags,
+ u16 *major_ver, u16 *minor_ver)
+{
+ struct fsl_mc_command cmd = { 0 };
+ struct dpseci_rsp_get_api_version *rsp_params;
+ int err;
+
+ cmd.header = mc_encode_cmd_header(DPSECI_CMDID_GET_API_VERSION,
+ cmd_flags, 0);
+ err = mc_send_command(mc_io, &cmd);
+ if (err)
+ return err;
+
+ rsp_params = (struct dpseci_rsp_get_api_version *)cmd.params;
+ *major_ver = le16_to_cpu(rsp_params->major);
+ *minor_ver = le16_to_cpu(rsp_params->minor);
+
+ return 0;
+}
+
+/**
+ * dpseci_set_congestion_notification() - Set congestion group
+ * notification configuration
+ * @mc_io: Pointer to MC portal's I/O object
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token: Token of DPSECI object
+ * @cfg: congestion notification configuration
+ *
+ * Return: '0' on success, error code otherwise
+ */
+int dpseci_set_congestion_notification(struct fsl_mc_io *mc_io, u32 cmd_flags,
+ u16 token, const struct dpseci_congestion_notification_cfg *cfg)
+{
+ struct fsl_mc_command cmd = { 0 };
+ struct dpseci_cmd_congestion_notification *cmd_params;
+
+ cmd.header = mc_encode_cmd_header(
+ DPSECI_CMDID_SET_CONGESTION_NOTIFICATION,
+ cmd_flags,
+ token);
+ cmd_params = (struct dpseci_cmd_congestion_notification *)cmd.params;
+ cmd_params->dest_id = cpu_to_le32(cfg->dest_cfg.dest_id);
+ cmd_params->notification_mode = cpu_to_le16(cfg->notification_mode);
+ cmd_params->priority = cfg->dest_cfg.priority;
+ dpseci_set_field(cmd_params->options, CGN_DEST_TYPE,
+ cfg->dest_cfg.dest_type);
+ dpseci_set_field(cmd_params->options, CGN_UNITS, cfg->units);
+ cmd_params->message_iova = cpu_to_le64(cfg->message_iova);
+ cmd_params->message_ctx = cpu_to_le64(cfg->message_ctx);
+ cmd_params->threshold_entry = cpu_to_le32(cfg->threshold_entry);
+ cmd_params->threshold_exit = cpu_to_le32(cfg->threshold_exit);
+
+ return mc_send_command(mc_io, &cmd);
+}
+
+/**
+ * dpseci_get_congestion_notification() - Get congestion group notification
+ * configuration
+ * @mc_io: Pointer to MC portal's I/O object
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token: Token of DPSECI object
+ * @cfg: congestion notification configuration
+ *
+ * Return: '0' on success, error code otherwise
+ */
+int dpseci_get_congestion_notification(struct fsl_mc_io *mc_io, u32 cmd_flags,
+ u16 token, struct dpseci_congestion_notification_cfg *cfg)
+{
+ struct fsl_mc_command cmd = { 0 };
+ struct dpseci_cmd_congestion_notification *rsp_params;
+ int err;
+
+ cmd.header = mc_encode_cmd_header(
+ DPSECI_CMDID_GET_CONGESTION_NOTIFICATION,
+ cmd_flags,
+ token);
+ err = mc_send_command(mc_io, &cmd);
+ if (err)
+ return err;
+
+ rsp_params = (struct dpseci_cmd_congestion_notification *)cmd.params;
+ cfg->dest_cfg.dest_id = le32_to_cpu(rsp_params->dest_id);
+ cfg->notification_mode = le16_to_cpu(rsp_params->notification_mode);
+ cfg->dest_cfg.priority = rsp_params->priority;
+ cfg->dest_cfg.dest_type = dpseci_get_field(rsp_params->options,
+ CGN_DEST_TYPE);
+ cfg->units = dpseci_get_field(rsp_params->options, CGN_UNITS);
+ cfg->message_iova = le64_to_cpu(rsp_params->message_iova);
+ cfg->message_ctx = le64_to_cpu(rsp_params->message_ctx);
+ cfg->threshold_entry = le32_to_cpu(rsp_params->threshold_entry);
+ cfg->threshold_exit = le32_to_cpu(rsp_params->threshold_exit);
+
+ return 0;
+}