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// SPDX-License-Identifier: GPL-2.0
// Copyright 2019 NXP
#include <linux/bitfield.h>
#include <linux/module.h>
#include <linux/types.h>
#include <linux/io.h>
#include <linux/fsl/mc.h>
#include "dpdmai.h"
#define DEST_TYPE_MASK 0xF
struct dpdmai_rsp_get_attributes {
__le32 id;
u8 num_of_priorities;
u8 num_of_queues;
u8 pad0[2];
__le16 major;
__le16 minor;
};
struct dpdmai_cmd_queue {
__le32 dest_id;
u8 dest_priority;
union {
u8 queue;
u8 pri;
};
u8 dest_type;
u8 queue_idx;
__le64 user_ctx;
union {
__le32 options;
__le32 fqid;
};
} __packed;
struct dpdmai_rsp_get_tx_queue {
__le64 pad;
__le32 fqid;
};
struct dpdmai_cmd_open {
__le32 dpdmai_id;
} __packed;
struct dpdmai_cmd_destroy {
__le32 dpdmai_id;
} __packed;
static inline u64 mc_enc(int lsoffset, int width, u64 val)
{
return (val & MAKE_UMASK64(width)) << lsoffset;
}
/**
* 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)
{
struct dpdmai_cmd_open *cmd_params;
struct fsl_mc_command cmd = { 0 };
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;
}
EXPORT_SYMBOL_GPL(dpdmai_open);
/**
* 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 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);
}
EXPORT_SYMBOL_GPL(dpdmai_close);
/**
* dpdmai_destroy() - Destroy the DPDMAI object and release all its resources.
* @mc_io: Pointer to MC portal's I/O object
* @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
* @dpdmai_id: The object id; it must be a valid id within the container that created this object;
* @token: Token of DPDMAI object
*
* Return: '0' on Success; error code otherwise.
*/
int dpdmai_destroy(struct fsl_mc_io *mc_io, u32 cmd_flags, u32 dpdmai_id, u16 token)
{
struct dpdmai_cmd_destroy *cmd_params;
struct fsl_mc_command cmd = { 0 };
/* prepare command */
cmd.header = mc_encode_cmd_header(DPDMAI_CMDID_DESTROY,
cmd_flags, token);
cmd_params = (struct dpdmai_cmd_destroy *)&cmd.params;
cmd_params->dpdmai_id = cpu_to_le32(dpdmai_id);
/* send command to mc*/
return mc_send_command(mc_io, &cmd);
}
EXPORT_SYMBOL_GPL(dpdmai_destroy);
/**
* 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)
{
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);
}
EXPORT_SYMBOL_GPL(dpdmai_enable);
/**
* 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)
{
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);
}
EXPORT_SYMBOL_GPL(dpdmai_disable);
/**
* 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 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);
}
EXPORT_SYMBOL_GPL(dpdmai_reset);
/**
* 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)
{
struct dpdmai_rsp_get_attributes *rsp_params;
struct fsl_mc_command cmd = { 0 };
int err;
/* 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;
attr->num_of_queues = rsp_params->num_of_queues;
return 0;
}
EXPORT_SYMBOL_GPL(dpdmai_get_attributes);
/**
* 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
* @queue_idx: DMA queue index
* @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 queue_idx,
u8 priority, const struct dpdmai_rx_queue_cfg *cfg)
{
struct dpdmai_cmd_queue *cmd_params;
struct fsl_mc_command cmd = { 0 };
/* 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->dest_priority = cfg->dest_cfg.priority;
cmd_params->pri = 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);
cmd_params->queue_idx = queue_idx;
/* send command to mc*/
return mc_send_command(mc_io, &cmd);
}
EXPORT_SYMBOL_GPL(dpdmai_set_rx_queue);
/**
* 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
* @queue_idx: DMA Queue index
* @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 queue_idx,
u8 priority, struct dpdmai_rx_queue_attr *attr)
{
struct dpdmai_cmd_queue *cmd_params;
struct fsl_mc_command cmd = { 0 };
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;
cmd_params->queue_idx = queue_idx;
/* 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->dest_priority;
attr->dest_cfg.dest_type = FIELD_GET(DEST_TYPE_MASK, cmd_params->dest_type);
attr->user_ctx = le64_to_cpu(cmd_params->user_ctx);
attr->fqid = le32_to_cpu(cmd_params->fqid);
return 0;
}
EXPORT_SYMBOL_GPL(dpdmai_get_rx_queue);
/**
* 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
* @queue_idx: DMA queue index
* @priority: Select the queue relative to number of
* priorities configured at DPDMAI creation
* @attr: Returned DMA 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 queue_idx, u8 priority, struct dpdmai_tx_queue_attr *attr)
{
struct dpdmai_rsp_get_tx_queue *rsp_params;
struct dpdmai_cmd_queue *cmd_params;
struct fsl_mc_command cmd = { 0 };
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;
cmd_params->queue_idx = queue_idx;
/* 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;
}
EXPORT_SYMBOL_GPL(dpdmai_get_tx_queue);
MODULE_LICENSE("GPL v2");
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