377 lines
10 KiB
C
377 lines
10 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
// Copyright 2019 NXP
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/types.h>
|
|
#include <linux/io.h>
|
|
#include <linux/fsl/mc.h>
|
|
#include "dpdmai.h"
|
|
|
|
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))
|
|
|
|
/* cmd, param, offset, width, type, arg_name */
|
|
#define DPDMAI_CMD_CREATE(cmd, cfg) \
|
|
do { \
|
|
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 (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 fsl_mc_command cmd = { 0 };
|
|
__le64 *cmd_dpdmai_id;
|
|
int err;
|
|
|
|
/* prepare command */
|
|
cmd.header = mc_encode_cmd_header(DPDMAI_CMDID_OPEN,
|
|
cmd_flags, 0);
|
|
|
|
cmd_dpdmai_id = cmd.params;
|
|
*cmd_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_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)
|
|
{
|
|
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);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* 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;
|
|
|
|
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
|
|
* @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_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->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);
|
|
}
|
|
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
|
|
* @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_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;
|
|
|
|
/* 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;
|
|
}
|
|
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
|
|
* @priority: Select the queue relative to number of
|
|
* priorities configured at DPDMAI creation
|
|
* @fqid: Returned Tx queue
|
|
*
|
|
* 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, u32 *fqid)
|
|
{
|
|
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;
|
|
|
|
/* 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;
|
|
*fqid = le32_to_cpu(rsp_params->fqid);
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(dpdmai_get_tx_queue);
|
|
|
|
MODULE_LICENSE("GPL v2");
|