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397 lines
11 KiB
397 lines
11 KiB
// SPDX-License-Identifier: GPL-2.0 |
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// Copyright 2019 NXP |
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#include <linux/module.h> |
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#include <linux/types.h> |
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#include <linux/io.h> |
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#include <linux/fsl/mc.h> |
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#include "dpdmai.h" |
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struct dpdmai_rsp_get_attributes { |
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__le32 id; |
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u8 num_of_priorities; |
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u8 pad0[3]; |
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__le16 major; |
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__le16 minor; |
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}; |
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struct dpdmai_cmd_queue { |
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__le32 dest_id; |
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u8 priority; |
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u8 queue; |
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u8 dest_type; |
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u8 pad; |
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__le64 user_ctx; |
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union { |
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__le32 options; |
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__le32 fqid; |
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}; |
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}; |
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struct dpdmai_rsp_get_tx_queue { |
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__le64 pad; |
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__le32 fqid; |
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}; |
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#define MC_CMD_OP(_cmd, _param, _offset, _width, _type, _arg) \ |
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((_cmd).params[_param] |= mc_enc((_offset), (_width), _arg)) |
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/* cmd, param, offset, width, type, arg_name */ |
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#define DPDMAI_CMD_CREATE(cmd, cfg) \ |
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do { \ |
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MC_CMD_OP(cmd, 0, 8, 8, u8, (cfg)->priorities[0]);\ |
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MC_CMD_OP(cmd, 0, 16, 8, u8, (cfg)->priorities[1]);\ |
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} while (0) |
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static inline u64 mc_enc(int lsoffset, int width, u64 val) |
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{ |
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return (val & MAKE_UMASK64(width)) << lsoffset; |
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} |
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/** |
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* dpdmai_open() - Open a control session for the specified object |
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* @mc_io: Pointer to MC portal's I/O object |
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* @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' |
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* @dpdmai_id: DPDMAI unique ID |
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* @token: Returned token; use in subsequent API calls |
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* |
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* This function can be used to open a control session for an |
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* already created object; an object may have been declared in |
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* the DPL or by calling the dpdmai_create() function. |
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* This function returns a unique authentication token, |
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* associated with the specific object ID and the specific MC |
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* portal; this token must be used in all subsequent commands for |
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* this specific object. |
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* |
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* Return: '0' on Success; Error code otherwise. |
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*/ |
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int dpdmai_open(struct fsl_mc_io *mc_io, u32 cmd_flags, |
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int dpdmai_id, u16 *token) |
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{ |
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struct fsl_mc_command cmd = { 0 }; |
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__le64 *cmd_dpdmai_id; |
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int err; |
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/* prepare command */ |
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cmd.header = mc_encode_cmd_header(DPDMAI_CMDID_OPEN, |
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cmd_flags, 0); |
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cmd_dpdmai_id = cmd.params; |
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*cmd_dpdmai_id = cpu_to_le32(dpdmai_id); |
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/* send command to mc*/ |
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err = mc_send_command(mc_io, &cmd); |
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if (err) |
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return err; |
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/* retrieve response parameters */ |
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*token = mc_cmd_hdr_read_token(&cmd); |
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return 0; |
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} |
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EXPORT_SYMBOL_GPL(dpdmai_open); |
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/** |
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* dpdmai_close() - Close the control session of the object |
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* @mc_io: Pointer to MC portal's I/O object |
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* @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' |
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* @token: Token of DPDMAI object |
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* |
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* After this function is called, no further operations are |
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* allowed on the object without opening a new control session. |
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* |
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* Return: '0' on Success; Error code otherwise. |
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*/ |
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int dpdmai_close(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token) |
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{ |
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struct fsl_mc_command cmd = { 0 }; |
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/* prepare command */ |
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cmd.header = mc_encode_cmd_header(DPDMAI_CMDID_CLOSE, |
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cmd_flags, token); |
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/* send command to mc*/ |
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return mc_send_command(mc_io, &cmd); |
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} |
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EXPORT_SYMBOL_GPL(dpdmai_close); |
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/** |
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* dpdmai_create() - Create the DPDMAI object |
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* @mc_io: Pointer to MC portal's I/O object |
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* @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' |
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* @cfg: Configuration structure |
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* @token: Returned token; use in subsequent API calls |
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* |
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* Create the DPDMAI object, allocate required resources and |
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* perform required initialization. |
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* |
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* The object can be created either by declaring it in the |
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* DPL file, or by calling this function. |
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* |
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* This function returns a unique authentication token, |
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* associated with the specific object ID and the specific MC |
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* portal; this token must be used in all subsequent calls to |
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* this specific object. For objects that are created using the |
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* DPL file, call dpdmai_open() function to get an authentication |
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* token first. |
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* |
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* Return: '0' on Success; Error code otherwise. |
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*/ |
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int dpdmai_create(struct fsl_mc_io *mc_io, u32 cmd_flags, |
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const struct dpdmai_cfg *cfg, u16 *token) |
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{ |
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struct fsl_mc_command cmd = { 0 }; |
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int err; |
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/* prepare command */ |
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cmd.header = mc_encode_cmd_header(DPDMAI_CMDID_CREATE, |
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cmd_flags, 0); |
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DPDMAI_CMD_CREATE(cmd, cfg); |
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/* send command to mc*/ |
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err = mc_send_command(mc_io, &cmd); |
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if (err) |
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return err; |
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/* retrieve response parameters */ |
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*token = mc_cmd_hdr_read_token(&cmd); |
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return 0; |
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} |
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/** |
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* dpdmai_destroy() - Destroy the DPDMAI object and release all its resources. |
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* @mc_io: Pointer to MC portal's I/O object |
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* @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' |
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* @token: Token of DPDMAI object |
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* |
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* Return: '0' on Success; error code otherwise. |
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*/ |
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int dpdmai_destroy(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token) |
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{ |
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struct fsl_mc_command cmd = { 0 }; |
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/* prepare command */ |
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cmd.header = mc_encode_cmd_header(DPDMAI_CMDID_DESTROY, |
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cmd_flags, token); |
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/* send command to mc*/ |
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return mc_send_command(mc_io, &cmd); |
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} |
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EXPORT_SYMBOL_GPL(dpdmai_destroy); |
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/** |
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* dpdmai_enable() - Enable the DPDMAI, allow sending and receiving frames. |
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* @mc_io: Pointer to MC portal's I/O object |
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* @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' |
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* @token: Token of DPDMAI object |
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* |
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* Return: '0' on Success; Error code otherwise. |
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*/ |
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int dpdmai_enable(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token) |
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{ |
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struct fsl_mc_command cmd = { 0 }; |
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/* prepare command */ |
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cmd.header = mc_encode_cmd_header(DPDMAI_CMDID_ENABLE, |
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cmd_flags, token); |
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/* send command to mc*/ |
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return mc_send_command(mc_io, &cmd); |
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} |
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EXPORT_SYMBOL_GPL(dpdmai_enable); |
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/** |
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* dpdmai_disable() - Disable the DPDMAI, stop sending and receiving frames. |
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* @mc_io: Pointer to MC portal's I/O object |
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* @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' |
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* @token: Token of DPDMAI object |
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* |
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* Return: '0' on Success; Error code otherwise. |
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*/ |
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int dpdmai_disable(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token) |
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{ |
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struct fsl_mc_command cmd = { 0 }; |
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/* prepare command */ |
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cmd.header = mc_encode_cmd_header(DPDMAI_CMDID_DISABLE, |
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cmd_flags, token); |
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/* send command to mc*/ |
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return mc_send_command(mc_io, &cmd); |
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} |
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EXPORT_SYMBOL_GPL(dpdmai_disable); |
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/** |
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* dpdmai_reset() - Reset the DPDMAI, returns the object to initial state. |
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* @mc_io: Pointer to MC portal's I/O object |
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* @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' |
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* @token: Token of DPDMAI object |
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* |
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* Return: '0' on Success; Error code otherwise. |
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*/ |
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int dpdmai_reset(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token) |
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{ |
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struct fsl_mc_command cmd = { 0 }; |
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/* prepare command */ |
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cmd.header = mc_encode_cmd_header(DPDMAI_CMDID_RESET, |
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cmd_flags, token); |
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/* send command to mc*/ |
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return mc_send_command(mc_io, &cmd); |
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} |
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EXPORT_SYMBOL_GPL(dpdmai_reset); |
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/** |
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* dpdmai_get_attributes() - Retrieve DPDMAI attributes. |
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* @mc_io: Pointer to MC portal's I/O object |
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* @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' |
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* @token: Token of DPDMAI object |
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* @attr: Returned object's attributes |
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* |
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* Return: '0' on Success; Error code otherwise. |
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*/ |
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int dpdmai_get_attributes(struct fsl_mc_io *mc_io, u32 cmd_flags, |
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u16 token, struct dpdmai_attr *attr) |
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{ |
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struct dpdmai_rsp_get_attributes *rsp_params; |
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struct fsl_mc_command cmd = { 0 }; |
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int err; |
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/* prepare command */ |
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cmd.header = mc_encode_cmd_header(DPDMAI_CMDID_GET_ATTR, |
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cmd_flags, token); |
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/* send command to mc*/ |
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err = mc_send_command(mc_io, &cmd); |
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if (err) |
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return err; |
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/* retrieve response parameters */ |
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rsp_params = (struct dpdmai_rsp_get_attributes *)cmd.params; |
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attr->id = le32_to_cpu(rsp_params->id); |
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attr->version.major = le16_to_cpu(rsp_params->major); |
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attr->version.minor = le16_to_cpu(rsp_params->minor); |
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attr->num_of_priorities = rsp_params->num_of_priorities; |
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return 0; |
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} |
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EXPORT_SYMBOL_GPL(dpdmai_get_attributes); |
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/** |
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* dpdmai_set_rx_queue() - Set Rx queue configuration |
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* @mc_io: Pointer to MC portal's I/O object |
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* @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' |
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* @token: Token of DPDMAI object |
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* @priority: Select the queue relative to number of |
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* priorities configured at DPDMAI creation |
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* @cfg: Rx queue configuration |
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* |
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* Return: '0' on Success; Error code otherwise. |
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*/ |
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int dpdmai_set_rx_queue(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token, |
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u8 priority, const struct dpdmai_rx_queue_cfg *cfg) |
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{ |
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struct dpdmai_cmd_queue *cmd_params; |
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struct fsl_mc_command cmd = { 0 }; |
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/* prepare command */ |
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cmd.header = mc_encode_cmd_header(DPDMAI_CMDID_SET_RX_QUEUE, |
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cmd_flags, token); |
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cmd_params = (struct dpdmai_cmd_queue *)cmd.params; |
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cmd_params->dest_id = cpu_to_le32(cfg->dest_cfg.dest_id); |
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cmd_params->priority = cfg->dest_cfg.priority; |
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cmd_params->queue = priority; |
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cmd_params->dest_type = cfg->dest_cfg.dest_type; |
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cmd_params->user_ctx = cpu_to_le64(cfg->user_ctx); |
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cmd_params->options = cpu_to_le32(cfg->options); |
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/* send command to mc*/ |
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return mc_send_command(mc_io, &cmd); |
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} |
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EXPORT_SYMBOL_GPL(dpdmai_set_rx_queue); |
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/** |
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* dpdmai_get_rx_queue() - Retrieve Rx queue attributes. |
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* @mc_io: Pointer to MC portal's I/O object |
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* @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' |
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* @token: Token of DPDMAI object |
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* @priority: Select the queue relative to number of |
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* priorities configured at DPDMAI creation |
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* @attr: Returned Rx queue attributes |
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* |
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* Return: '0' on Success; Error code otherwise. |
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*/ |
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int dpdmai_get_rx_queue(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token, |
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u8 priority, struct dpdmai_rx_queue_attr *attr) |
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{ |
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struct dpdmai_cmd_queue *cmd_params; |
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struct fsl_mc_command cmd = { 0 }; |
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int err; |
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/* prepare command */ |
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cmd.header = mc_encode_cmd_header(DPDMAI_CMDID_GET_RX_QUEUE, |
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cmd_flags, token); |
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cmd_params = (struct dpdmai_cmd_queue *)cmd.params; |
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cmd_params->queue = priority; |
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/* send command to mc*/ |
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err = mc_send_command(mc_io, &cmd); |
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if (err) |
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return err; |
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/* retrieve response parameters */ |
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attr->dest_cfg.dest_id = le32_to_cpu(cmd_params->dest_id); |
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attr->dest_cfg.priority = cmd_params->priority; |
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attr->dest_cfg.dest_type = cmd_params->dest_type; |
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attr->user_ctx = le64_to_cpu(cmd_params->user_ctx); |
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attr->fqid = le32_to_cpu(cmd_params->fqid); |
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return 0; |
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} |
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EXPORT_SYMBOL_GPL(dpdmai_get_rx_queue); |
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/** |
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* dpdmai_get_tx_queue() - Retrieve Tx queue attributes. |
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* @mc_io: Pointer to MC portal's I/O object |
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* @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' |
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* @token: Token of DPDMAI object |
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* @priority: Select the queue relative to number of |
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* priorities configured at DPDMAI creation |
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* @fqid: Returned Tx queue |
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* |
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* Return: '0' on Success; Error code otherwise. |
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*/ |
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int dpdmai_get_tx_queue(struct fsl_mc_io *mc_io, u32 cmd_flags, |
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u16 token, u8 priority, u32 *fqid) |
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{ |
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struct dpdmai_rsp_get_tx_queue *rsp_params; |
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struct dpdmai_cmd_queue *cmd_params; |
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struct fsl_mc_command cmd = { 0 }; |
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int err; |
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/* prepare command */ |
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cmd.header = mc_encode_cmd_header(DPDMAI_CMDID_GET_TX_QUEUE, |
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cmd_flags, token); |
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cmd_params = (struct dpdmai_cmd_queue *)cmd.params; |
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cmd_params->queue = priority; |
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/* send command to mc*/ |
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err = mc_send_command(mc_io, &cmd); |
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if (err) |
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return err; |
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/* retrieve response parameters */ |
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rsp_params = (struct dpdmai_rsp_get_tx_queue *)cmd.params; |
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*fqid = le32_to_cpu(rsp_params->fqid); |
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return 0; |
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} |
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EXPORT_SYMBOL_GPL(dpdmai_get_tx_queue); |
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MODULE_LICENSE("GPL v2");
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