[V4 1/2] dmaengine: fsl-dpaa2-qdma: Add the DPDMAI(Data Path DMA Interface) support

Peng Ma
2019-06-13T15:35:27Z

The MC(Management Complex) exports the DPDMAI(Data Path DMA Interface)
object as an interface to operate the DPAA2(Data Path Acceleration
Architecture 2) qDMA Engine. The DPDMAI enables sending frame-based
requests to qDMA and receiving back confirmation response on transaction
completion, utilizing the DPAA2 QBMan(Queue Manager and Buffer Manager
hardware) infrastructure. DPDMAI object provides up to two priorities for
processing qDMA requests.
The following list summarizes the DPDMAI main features and capabilities:
1. Supports up to two scheduling priorities for processing
service requests.
- Each DPDMAI transmit queue is mapped to one of two service
priorities, allowing further prioritization in hardware between
requests from different DPDMAI objects.
2. Supports up to two receive queues for incoming transaction
completion confirmations.
- Each DPDMAI receive queue is mapped to one of two receive
priorities, allowing further prioritization between other
interfaces when associating the DPDMAI receive queues to DPIO
or DPCON(Data Path Concentrator) objects.
3. Supports different scheduling options for processing received
packets:
- Queues can be configured either in 'parked' mode (default),
oattached to a DPIO object, or attached to DPCON object.
4. Allows interaction with one or more DPIO objects for
dequeueing/enqueueing frame descriptors(FD) and for
acquiring/releasing buffers.
5. Supports enable, disable, and reset operations.

Add dpdmai to support some platforms with dpaa2 qdma engine.

Signed-off-by: Peng Ma <peng.ma@nxp.com>
---
changed for v4:
- Delete dpdmai_cmd.h.
- Remove some useless functions.
- Clean up the format.
- Update Copyright.

drivers/dma/fsl-dpaa2-qdma/dpdmai.c | 275 ++++++++++++++++++++++++++++++
drivers/dma/fsl-dpaa2-qdma/dpdmai.h | 318 +++++++++++++++++++++++++++++++++++
2 files changed, 593 insertions(+), 0 deletions(-)
create mode 100644 drivers/dma/fsl-dpaa2-qdma/dpdmai.c
create mode 100644 drivers/dma/fsl-dpaa2-qdma/dpdmai.h

diff --git a/drivers/dma/fsl-dpaa2-qdma/dpdmai.c b/drivers/dma/fsl-dpaa2-qdma/dpdmai.c
new file mode 100644
index 0000000..4dba154
--- /dev/null
+++ b/drivers/dma/fsl-dpaa2-qdma/dpdmai.c
@@ -0,0 +1,275 @@
+// SPDX-License-Identifier: GPL-2.0
+// Copyright 2019 NXP
+
+#include <linux/types.h>
+#include <linux/io.h>
+#include <linux/fsl/mc.h>
+#include "dpdmai.h"
+
+struct dpdmai_cmd_open {
+ __le32 dpdmai_id;
+};
+
+struct dpdmai_rsp_get_attributes {
+ __le32 id;
+ u8 num_of_priorities;
+ u8 pad0[3];
+ __le16 major;
+ __le16 minor;
+};
+
+struct dpdmai_cmd_queue {
+ __le32 dest_id;
+ u8 priority;
+ u8 queue;
+ u8 dest_type;
+ u8 pad;
+ __le64 user_ctx;
+ union {
+ __le32 options;
+ __le32 fqid;
+ };
+};
+
+struct dpdmai_rsp_get_tx_queue {
+ __le64 pad;
+ __le32 fqid;
+};
+
+#define MC_CMD_OP(_cmd, _param, _offset, _width, _type, _arg) \
+ ((_cmd).params[_param] |= mc_enc((_offset), (_width), _arg))
+
+#define MC_CMD_HDR_READ_TOKEN(_hdr) \
+ ((u16)mc_dec((_hdr), MC_CMD_HDR_TOKEN_O, MC_CMD_HDR_TOKEN_S))
+
+/* cmd, param, offset, width, type, arg_name */
+#define DPDMAI_CMD_CREATE(_cmd, _cfg) \
+do { \
+ typeof(_cmd) (cmd) = (_cmd); \
+ typeof(_cfg) (cfg) = (_cfg); \
+ MC_CMD_OP(cmd, 0, 8, 8, u8, (cfg)->priorities[0]);\
+ MC_CMD_OP(cmd, 0, 16, 8, u8, (cfg)->priorities[1]);\
+} while (0)
+
+static inline u64 mc_enc(int lsoffset, int width, u64 val)
+{
+ return (u64)(((u64)val & MAKE_UMASK64(width)) << lsoffset);
+}
+
+static inline u64 mc_dec(u64 val, int lsoffset, int width)
+{
+ return (u64)((val >> lsoffset) & MAKE_UMASK64(width));
+}
+
+int dpdmai_open(struct fsl_mc_io *mc_io, u32 cmd_flags,
+ int dpdmai_id, u16 *token)
+{
+ struct fsl_mc_command cmd = { 0 };
+ struct dpdmai_cmd_open *cmd_params;
+ int err;
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(DPDMAI_CMDID_OPEN,
+ cmd_flags, 0);
+
+ cmd_params = (struct dpdmai_cmd_open *)cmd.params;
+ cmd_params->dpdmai_id = cpu_to_le32(dpdmai_id);
+
+ /* send command to mc*/
+ err = mc_send_command(mc_io, &cmd);
+ if (err)
+ return err;
+
+ /* retrieve response parameters */
+ *token = mc_cmd_hdr_read_token(&cmd);
+ return 0;
+}
+
+int dpdmai_close(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token)
+{
+ struct fsl_mc_command cmd = { 0 };
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(DPDMAI_CMDID_CLOSE,
+ cmd_flags, token);
+
+ /* send command to mc*/
+ return mc_send_command(mc_io, &cmd);
+}
+
+int dpdmai_create(struct fsl_mc_io *mc_io, u32 cmd_flags,
+ const struct dpdmai_cfg *cfg, u16 *token)
+{
+ struct fsl_mc_command cmd = { 0 };
+ int err;
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(DPDMAI_CMDID_CREATE,
+ cmd_flags,
+ 0);
+ DPDMAI_CMD_CREATE(cmd, cfg);
+
+ /* send command to mc*/
+ err = mc_send_command(mc_io, &cmd);
+ if (err)
+ return err;
+
+ /* retrieve response parameters */
+ *token = MC_CMD_HDR_READ_TOKEN(cmd.header);
+
+ return 0;
+}
+
+int dpdmai_enable(struct fsl_mc_io *mc_io, u32 cmd_flags,
+ u16 token)
+{
+ struct fsl_mc_command cmd = { 0 };
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(DPDMAI_CMDID_ENABLE,
+ cmd_flags,
+ token);
+
+ /* send command to mc*/
+ return mc_send_command(mc_io, &cmd);
+}
+
+int dpdmai_disable(struct fsl_mc_io *mc_io, u32 cmd_flags,
+ u16 token)
+{
+ struct fsl_mc_command cmd = { 0 };
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(DPDMAI_CMDID_DISABLE,
+ cmd_flags,
+ token);
+
+ /* send command to mc*/
+ return mc_send_command(mc_io, &cmd);
+}
+
+int dpdmai_reset(struct fsl_mc_io *mc_io, u32 cmd_flags,
+ u16 token)
+{
+ struct fsl_mc_command cmd = { 0 };
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(DPDMAI_CMDID_RESET,
+ cmd_flags,
+ token);
+
+ /* send command to mc*/
+ return mc_send_command(mc_io, &cmd);
+}
+
+int dpdmai_get_attributes(struct fsl_mc_io *mc_io, u32 cmd_flags,
+ u16 token, struct dpdmai_attr *attr)
+{
+ struct fsl_mc_command cmd = { 0 };
+ int err;
+ struct dpdmai_rsp_get_attributes *rsp_params;
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(DPDMAI_CMDID_GET_ATTR,
+ cmd_flags,
+ token);
+
+ /* send command to mc*/
+ err = mc_send_command(mc_io, &cmd);
+ if (err)
+ return err;
+
+ /* retrieve response parameters */
+ rsp_params = (struct dpdmai_rsp_get_attributes *)cmd.params;
+ attr->id = le32_to_cpu(rsp_params->id);
+ attr->version.major = le16_to_cpu(rsp_params->major);
+ attr->version.minor = le16_to_cpu(rsp_params->minor);
+ attr->num_of_priorities = rsp_params->num_of_priorities;
+
+ return 0;
+}
+
+int dpdmai_set_rx_queue(struct fsl_mc_io *mc_io, u32 cmd_flags,
+ u16 token, u8 priority,
+ const struct dpdmai_rx_queue_cfg *cfg)
+{
+ struct fsl_mc_command cmd = { 0 };
+ struct dpdmai_cmd_queue *cmd_params;
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(DPDMAI_CMDID_SET_RX_QUEUE,
+ cmd_flags,
+ token);
+
+ cmd_params = (struct dpdmai_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 = priority;
+ cmd_params->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);
+
+ /* send command to mc*/
+ return mc_send_command(mc_io, &cmd);
+}
+
+int dpdmai_get_rx_queue(struct fsl_mc_io *mc_io, u32 cmd_flags,
+ u16 token, u8 priority,
+ struct dpdmai_rx_queue_attr *attr)
+{
+ struct fsl_mc_command cmd = { 0 };
+ struct dpdmai_cmd_queue *cmd_params;
+ int err;
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(DPDMAI_CMDID_GET_RX_QUEUE,
+ cmd_flags,
+ token);
+
+ cmd_params = (struct dpdmai_cmd_queue *)cmd.params;
+ cmd_params->queue = priority;
+
+ /* send command to mc*/
+ err = mc_send_command(mc_io, &cmd);
+ if (err)
+ return err;
+
+ /* retrieve response parameters */
+ attr->dest_cfg.dest_id = le32_to_cpu(cmd_params->dest_id);
+ attr->dest_cfg.priority = cmd_params->priority;
+ attr->dest_cfg.dest_type = cmd_params->dest_type;
+ attr->user_ctx = le64_to_cpu(cmd_params->user_ctx);
+ attr->fqid = le32_to_cpu(cmd_params->fqid);
+
+ return 0;
+}
+
+int dpdmai_get_tx_queue(struct fsl_mc_io *mc_io, u32 cmd_flags,
+ u16 token, u8 priority,
+ struct dpdmai_tx_queue_attr *attr)
+{
+ struct fsl_mc_command cmd = { 0 };
+ struct dpdmai_cmd_queue *cmd_params;
+ struct dpdmai_rsp_get_tx_queue *rsp_params;
+ int err;
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(DPDMAI_CMDID_GET_TX_QUEUE,
+ cmd_flags,
+ token);
+
+ cmd_params = (struct dpdmai_cmd_queue *)cmd.params;
+ cmd_params->queue = priority;
+
+ /* send command to mc*/
+ err = mc_send_command(mc_io, &cmd);
+ if (err)
+ return err;
+
+ /* retrieve response parameters */
+
+ rsp_params = (struct dpdmai_rsp_get_tx_queue *)cmd.params;
+ attr->fqid = le32_to_cpu(rsp_params->fqid);
+
+ return 0;
+}
diff --git a/drivers/dma/fsl-dpaa2-qdma/dpdmai.h b/drivers/dma/fsl-dpaa2-qdma/dpdmai.h
new file mode 100644
index 0000000..54d26bb
--- /dev/null
+++ b/drivers/dma/fsl-dpaa2-qdma/dpdmai.h
@@ -0,0 +1,318 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright 2019 NXP */
+
+#ifndef __FSL_DPDMAI_H
+#define __FSL_DPDMAI_H
+
+/* DPDMAI Version */
+#define DPDMAI_VER_MAJOR 2
+#define DPDMAI_VER_MINOR 2
+
+#define DPDMAI_CMD_BASE_VERSION 0
+#define DPDMAI_CMD_ID_OFFSET 4
+
+#define DPDMAI_CMDID_FORMAT(x) (((x) << DPDMAI_CMD_ID_OFFSET) | \
+ DPDMAI_CMD_BASE_VERSION)
+
+/* Command IDs */
+#define DPDMAI_CMDID_CLOSE DPDMAI_CMDID_FORMAT(0x800)
+#define DPDMAI_CMDID_OPEN DPDMAI_CMDID_FORMAT(0x80E)
+#define DPDMAI_CMDID_CREATE DPDMAI_CMDID_FORMAT(0x90E)
+
+#define DPDMAI_CMDID_ENABLE DPDMAI_CMDID_FORMAT(0x002)
+#define DPDMAI_CMDID_DISABLE DPDMAI_CMDID_FORMAT(0x003)
+#define DPDMAI_CMDID_GET_ATTR DPDMAI_CMDID_FORMAT(0x004)
+#define DPDMAI_CMDID_RESET DPDMAI_CMDID_FORMAT(0x005)
+#define DPDMAI_CMDID_IS_ENABLED DPDMAI_CMDID_FORMAT(0x006)
+
+#define DPDMAI_CMDID_SET_IRQ DPDMAI_CMDID_FORMAT(0x010)
+#define DPDMAI_CMDID_GET_IRQ DPDMAI_CMDID_FORMAT(0x011)
+#define DPDMAI_CMDID_SET_IRQ_ENABLE DPDMAI_CMDID_FORMAT(0x012)
+#define DPDMAI_CMDID_GET_IRQ_ENABLE DPDMAI_CMDID_FORMAT(0x013)
+#define DPDMAI_CMDID_SET_IRQ_MASK DPDMAI_CMDID_FORMAT(0x014)
+#define DPDMAI_CMDID_GET_IRQ_MASK DPDMAI_CMDID_FORMAT(0x015)
+#define DPDMAI_CMDID_GET_IRQ_STATUS DPDMAI_CMDID_FORMAT(0x016)
+#define DPDMAI_CMDID_CLEAR_IRQ_STATUS DPDMAI_CMDID_FORMAT(0x017)
+
+#define DPDMAI_CMDID_SET_RX_QUEUE DPDMAI_CMDID_FORMAT(0x1A0)
+#define DPDMAI_CMDID_GET_RX_QUEUE DPDMAI_CMDID_FORMAT(0x1A1)
+#define DPDMAI_CMDID_GET_TX_QUEUE DPDMAI_CMDID_FORMAT(0x1A2)
+
+#define MC_CMD_HDR_TOKEN_O 32 /* Token field offset */
+#define MC_CMD_HDR_TOKEN_S 16 /* Token field size */
+
+#define MAKE_UMASK64(_width) \
+ ((u64)((_width) < 64 ? ((u64)1 << (_width)) - 1 : (u64)-1))
+
+/* Data Path DMA Interface API
+ * Contains initialization APIs and runtime control APIs for DPDMAI
+ */
+
+/**
+ * Maximum number of Tx/Rx priorities per DPDMAI object
+ */
+#define DPDMAI_PRIO_NUM 2
+
+/* DPDMAI queue modification options */
+
+/**
+ * Select to modify the user's context associated with the queue
+ */
+#define DPDMAI_QUEUE_OPT_USER_CTX 0x1
+
+/**
+ * Select to modify the queue's destination
+ */
+#define DPDMAI_QUEUE_OPT_DEST 0x2
+
+/**
+ * dpdmai_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_'
+ * @dpdmai_id: DPDMAI 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 in
+ * the DPL or by calling the dpdmai_create() function.
+ * 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 dpdmai_open(struct fsl_mc_io *mc_io, u32 cmd_flags,
+ int dpdmai_id, u16 *token);
+
+/**
+ * dpdmai_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 DPDMAI 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 dpdmai_close(struct fsl_mc_io *mc_io, u32 cmd_flags,
+ u16 token);
+
+/**
+ * struct dpdmai_cfg - Structure representing DPDMAI configuration
+ * @priorities: Priorities for the DMA hardware processing; valid priorities are
+ * configured with values 1-8; the entry following last valid entry
+ * should be configured with 0
+ */
+struct dpdmai_cfg {
+ u8 priorities[DPDMAI_PRIO_NUM];
+};
+
+/**
+ * dpdmai_create() - Create the DPDMAI object
+ * @mc_io: Pointer to MC portal's I/O object
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
+ * @cfg: Configuration structure
+ * @token: Returned token; use in subsequent API calls
+ *
+ * Create the DPDMAI object, allocate required resources and
+ * perform required initialization.
+ *
+ * The object can be created either by declaring it in the
+ * DPL file, or by calling this function.
+ *
+ * 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 calls to
+ * this specific object. For objects that are created using the
+ * DPL file, call dpdmai_open() function to get an authentication
+ * token first.
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dpdmai_create(struct fsl_mc_io *mc_io, u32 cmd_flags,
+ const struct dpdmai_cfg *cfg, u16 *token);
+
+/**
+ * dpdmai_enable() - Enable the DPDMAI, 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 DPDMAI object
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dpdmai_enable(struct fsl_mc_io *mc_io, u32 cmd_flags,
+ u16 token);
+
+/**
+ * dpdmai_disable() - Disable the DPDMAI, 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 DPDMAI object
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dpdmai_disable(struct fsl_mc_io *mc_io, u32 cmd_flags,
+ u16 token);
+
+/**
+ * dpdmai_reset() - Reset the DPDMAI, returns the object to initial state.
+ * @mc_io: Pointer to MC portal's I/O object
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token: Token of DPDMAI object
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dpdmai_reset(struct fsl_mc_io *mc_io, u32 cmd_flags,
+ u16 token);
+
+/**
+ * struct dpdmai_attr - Structure representing DPDMAI attributes
+ * @id: DPDMAI object ID
+ * @version: DPDMAI version
+ * @num_of_priorities: number of priorities
+ */
+struct dpdmai_attr {
+ int id;
+ /**
+ * struct version - DPDMAI version
+ * @major: DPDMAI major version
+ * @minor: DPDMAI minor version
+ */
+ struct {
+ u16 major;
+ u16 minor;
+ } version;
+ u8 num_of_priorities;
+};
+
+/**
+ * dpdmai_get_attributes() - Retrieve DPDMAI 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 DPDMAI object
+ * @attr: Returned object's attributes
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dpdmai_get_attributes(struct fsl_mc_io *mc_io, u32 cmd_flags,
+ u16 token, struct dpdmai_attr *attr);
+
+/**
+ * enum dpdmai_dest - DPDMAI destination types
+ * @DPDMAI_DEST_NONE: Unassigned destination; The queue is set in parked mode
+ * and does not generate FQDAN notifications; user is expected to dequeue
+ * from the queue based on polling or other user-defined method
+ * @DPDMAI_DEST_DPIO: The queue is set in schedule mode and generates FQDAN
+ * notifications to the specified DPIO; user is expected to dequeue
+ * from the queue only after notification is received
+ * @DPDMAI_DEST_DPCON: The queue is set in schedule mode and does not generate
+ * FQDAN notifications, but is connected to the specified DPCON object;
+ * user is expected to dequeue from the DPCON channel
+ */
+enum dpdmai_dest {
+ DPDMAI_DEST_NONE = 0,
+ DPDMAI_DEST_DPIO = 1,
+ DPDMAI_DEST_DPCON = 2
+};
+
+/**
+ * struct dpdmai_dest_cfg - Structure representing DPDMAI destination parameters
+ * @dest_type: Destination type
+ * @dest_id: Either DPIO ID or DPCON ID, depending on the destination type
+ * @priority: Priority selection within the DPIO or DPCON channel; valid values
+ * are 0-1 or 0-7, depending on the number of priorities in that
+ * channel; not relevant for 'DPDMAI_DEST_NONE' option
+ */
+struct dpdmai_dest_cfg {
+ enum dpdmai_dest dest_type;
+ int dest_id;
+ u8 priority;
+};
+
+/**
+ * struct dpdmai_rx_queue_cfg - DPDMAI RX queue configuration
+ * @options: Flags representing the suggested modifications to the queue;
+ * Use any combination of 'DPDMAI_QUEUE_OPT_<X>' flags
+ * @user_ctx: User context value provided in the frame descriptor of each
+ * dequeued frame;
+ * valid only if 'DPDMAI_QUEUE_OPT_USER_CTX' is contained in 'options'
+ * @dest_cfg: Queue destination parameters;
+ * valid only if 'DPDMAI_QUEUE_OPT_DEST' is contained in 'options'
+ */
+struct dpdmai_rx_queue_cfg {
+ struct dpdmai_dest_cfg dest_cfg;
+ u32 options;
+ u64 user_ctx;
+
+};
+
+/**
+ * dpdmai_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 DPDMAI object
+ * @priority: Select the queue relative to number of
+ * priorities configured at DPDMAI creation
+ * @cfg: Rx queue configuration
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dpdmai_set_rx_queue(struct fsl_mc_io *mc_io, u32 cmd_flags,
+ u16 token, u8 priority,
+ const struct dpdmai_rx_queue_cfg *cfg);
+
+/**
+ * struct dpdmai_rx_queue_attr - Structure representing attributes of Rx queues
+ * @user_ctx: User context value provided in the frame descriptor of each
+ * dequeued frame
+ * @dest_cfg: Queue destination configuration
+ * @fqid: Virtual FQID value to be used for dequeue operations
+ */
+struct dpdmai_rx_queue_attr {
+ struct dpdmai_dest_cfg dest_cfg;
+ u64 user_ctx;
+ u32 fqid;
+};
+
+/**
+ * dpdmai_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 DPDMAI object
+ * @priority: Select the queue relative to number of
+ * priorities configured at DPDMAI creation
+ * @attr: Returned Rx queue attributes
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dpdmai_get_rx_queue(struct fsl_mc_io *mc_io, u32 cmd_flags,
+ u16 token, u8 priority,
+ struct dpdmai_rx_queue_attr *attr);
+
+/**
+ * struct dpdmai_tx_queue_attr - Structure representing attributes of Tx queues
+ * @fqid: Virtual FQID to be used for sending frames to DMA hardware
+ */
+
+struct dpdmai_tx_queue_attr {
+ u32 fqid;
+};
+
+/**
+ * dpdmai_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 DPDMAI object
+ * @priority: Select the queue relative to number of
+ * priorities configured at DPDMAI creation
+ * @attr: Returned Tx queue attributes
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dpdmai_get_tx_queue(struct fsl_mc_io *mc_io, u32 cmd_flags,
+ u16 token, u8 priority,
+ struct dpdmai_tx_queue_attr *attr);
+
+#endif /* __FSL_DPDMAI_H */
--
1.7.1