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221 lines
5.7 KiB
221 lines
5.7 KiB
// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) |
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/* |
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* Copyright 2013-2016 Freescale Semiconductor Inc. |
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* |
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*/ |
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#include <linux/kernel.h> |
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#include <linux/fsl/mc.h> |
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#include "fsl-mc-private.h" |
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/** |
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* dpcon_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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* @dpcon_id: DPCON 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 dpcon_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 dpcon_open(struct fsl_mc_io *mc_io, |
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u32 cmd_flags, |
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int dpcon_id, |
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u16 *token) |
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{ |
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struct fsl_mc_command cmd = { 0 }; |
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struct dpcon_cmd_open *dpcon_cmd; |
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int err; |
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/* prepare command */ |
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cmd.header = mc_encode_cmd_header(DPCON_CMDID_OPEN, |
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cmd_flags, |
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0); |
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dpcon_cmd = (struct dpcon_cmd_open *)cmd.params; |
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dpcon_cmd->dpcon_id = cpu_to_le32(dpcon_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(dpcon_open); |
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/** |
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* dpcon_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 DPCON 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 dpcon_close(struct fsl_mc_io *mc_io, |
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u32 cmd_flags, |
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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(DPCON_CMDID_CLOSE, |
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cmd_flags, |
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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(dpcon_close); |
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/** |
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* dpcon_enable() - Enable the DPCON |
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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 DPCON 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 dpcon_enable(struct fsl_mc_io *mc_io, |
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u32 cmd_flags, |
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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(DPCON_CMDID_ENABLE, |
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cmd_flags, |
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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(dpcon_enable); |
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/** |
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* dpcon_disable() - Disable the DPCON |
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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 DPCON 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 dpcon_disable(struct fsl_mc_io *mc_io, |
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u32 cmd_flags, |
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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(DPCON_CMDID_DISABLE, |
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cmd_flags, |
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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(dpcon_disable); |
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/** |
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* dpcon_reset() - Reset the DPCON, 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 DPCON 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 dpcon_reset(struct fsl_mc_io *mc_io, |
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u32 cmd_flags, |
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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(DPCON_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(dpcon_reset); |
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/** |
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* dpcon_get_attributes() - Retrieve DPCON 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 DPCON object |
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* @attr: 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 dpcon_get_attributes(struct fsl_mc_io *mc_io, |
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u32 cmd_flags, |
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u16 token, |
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struct dpcon_attr *attr) |
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{ |
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struct fsl_mc_command cmd = { 0 }; |
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struct dpcon_rsp_get_attr *dpcon_rsp; |
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int err; |
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/* prepare command */ |
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cmd.header = mc_encode_cmd_header(DPCON_CMDID_GET_ATTR, |
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cmd_flags, |
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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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dpcon_rsp = (struct dpcon_rsp_get_attr *)cmd.params; |
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attr->id = le32_to_cpu(dpcon_rsp->id); |
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attr->qbman_ch_id = le16_to_cpu(dpcon_rsp->qbman_ch_id); |
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attr->num_priorities = dpcon_rsp->num_priorities; |
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return 0; |
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} |
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EXPORT_SYMBOL_GPL(dpcon_get_attributes); |
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/** |
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* dpcon_set_notification() - Set DPCON notification destination |
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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 DPCON object |
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* @cfg: Notification parameters |
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* |
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* Return: '0' on Success; Error code otherwise |
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*/ |
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int dpcon_set_notification(struct fsl_mc_io *mc_io, |
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u32 cmd_flags, |
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u16 token, |
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struct dpcon_notification_cfg *cfg) |
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{ |
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struct fsl_mc_command cmd = { 0 }; |
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struct dpcon_cmd_set_notification *dpcon_cmd; |
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/* prepare command */ |
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cmd.header = mc_encode_cmd_header(DPCON_CMDID_SET_NOTIFICATION, |
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cmd_flags, |
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token); |
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dpcon_cmd = (struct dpcon_cmd_set_notification *)cmd.params; |
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dpcon_cmd->dpio_id = cpu_to_le32(cfg->dpio_id); |
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dpcon_cmd->priority = cfg->priority; |
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dpcon_cmd->user_ctx = cpu_to_le64(cfg->user_ctx); |
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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(dpcon_set_notification);
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