| /* |
| * Copyright 2013-2016 Freescale Semiconductor Inc. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are met: |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * * Neither the name of the above-listed copyright holders nor the |
| * names of any contributors may be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * ALTERNATIVELY, this software may be distributed under the terms of the |
| * GNU General Public License ("GPL") as published by the Free Software |
| * Foundation, either version 2 of that License or (at your option) any |
| * later version. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE |
| * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| * POSSIBILITY OF SUCH DAMAGE. |
| */ |
| #include <linux/kernel.h> |
| #include "../include/mc.h" |
| #include "../include/dpbp.h" |
| |
| #include "dpbp-cmd.h" |
| |
| /** |
| * dpbp_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_' |
| * @dpbp_id: DPBP 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 dpbp_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 dpbp_open(struct fsl_mc_io *mc_io, |
| u32 cmd_flags, |
| int dpbp_id, |
| u16 *token) |
| { |
| struct mc_command cmd = { 0 }; |
| struct dpbp_cmd_open *cmd_params; |
| int err; |
| |
| /* prepare command */ |
| cmd.header = mc_encode_cmd_header(DPBP_CMDID_OPEN, |
| cmd_flags, 0); |
| cmd_params = (struct dpbp_cmd_open *)cmd.params; |
| cmd_params->dpbp_id = cpu_to_le32(dpbp_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 err; |
| } |
| EXPORT_SYMBOL(dpbp_open); |
| |
| /** |
| * dpbp_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 DPBP 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 dpbp_close(struct fsl_mc_io *mc_io, |
| u32 cmd_flags, |
| u16 token) |
| { |
| struct mc_command cmd = { 0 }; |
| |
| /* prepare command */ |
| cmd.header = mc_encode_cmd_header(DPBP_CMDID_CLOSE, cmd_flags, |
| token); |
| |
| /* send command to mc*/ |
| return mc_send_command(mc_io, &cmd); |
| } |
| EXPORT_SYMBOL(dpbp_close); |
| |
| /** |
| * dpbp_enable() - Enable the DPBP. |
| * @mc_io: Pointer to MC portal's I/O object |
| * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' |
| * @token: Token of DPBP object |
| * |
| * Return: '0' on Success; Error code otherwise. |
| */ |
| int dpbp_enable(struct fsl_mc_io *mc_io, |
| u32 cmd_flags, |
| u16 token) |
| { |
| struct mc_command cmd = { 0 }; |
| |
| /* prepare command */ |
| cmd.header = mc_encode_cmd_header(DPBP_CMDID_ENABLE, cmd_flags, |
| token); |
| |
| /* send command to mc*/ |
| return mc_send_command(mc_io, &cmd); |
| } |
| EXPORT_SYMBOL(dpbp_enable); |
| |
| /** |
| * dpbp_disable() - Disable the DPBP. |
| * @mc_io: Pointer to MC portal's I/O object |
| * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' |
| * @token: Token of DPBP object |
| * |
| * Return: '0' on Success; Error code otherwise. |
| */ |
| int dpbp_disable(struct fsl_mc_io *mc_io, |
| u32 cmd_flags, |
| u16 token) |
| { |
| struct mc_command cmd = { 0 }; |
| |
| /* prepare command */ |
| cmd.header = mc_encode_cmd_header(DPBP_CMDID_DISABLE, |
| cmd_flags, token); |
| |
| /* send command to mc*/ |
| return mc_send_command(mc_io, &cmd); |
| } |
| EXPORT_SYMBOL(dpbp_disable); |
| |
| /** |
| * dpbp_is_enabled() - Check if the DPBP is enabled. |
| * @mc_io: Pointer to MC portal's I/O object |
| * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' |
| * @token: Token of DPBP object |
| * @en: Returns '1' if object is enabled; '0' otherwise |
| * |
| * Return: '0' on Success; Error code otherwise. |
| */ |
| int dpbp_is_enabled(struct fsl_mc_io *mc_io, |
| u32 cmd_flags, |
| u16 token, |
| int *en) |
| { |
| struct mc_command cmd = { 0 }; |
| struct dpbp_rsp_is_enabled *rsp_params; |
| int err; |
| /* prepare command */ |
| cmd.header = mc_encode_cmd_header(DPBP_CMDID_IS_ENABLED, cmd_flags, |
| token); |
| |
| /* send command to mc*/ |
| err = mc_send_command(mc_io, &cmd); |
| if (err) |
| return err; |
| |
| /* retrieve response parameters */ |
| rsp_params = (struct dpbp_rsp_is_enabled *)cmd.params; |
| *en = rsp_params->enabled & DPBP_ENABLE; |
| |
| return 0; |
| } |
| EXPORT_SYMBOL(dpbp_is_enabled); |
| |
| /** |
| * dpbp_reset() - Reset the DPBP, 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 DPBP object |
| * |
| * Return: '0' on Success; Error code otherwise. |
| */ |
| int dpbp_reset(struct fsl_mc_io *mc_io, |
| u32 cmd_flags, |
| u16 token) |
| { |
| struct mc_command cmd = { 0 }; |
| |
| /* prepare command */ |
| cmd.header = mc_encode_cmd_header(DPBP_CMDID_RESET, |
| cmd_flags, token); |
| |
| /* send command to mc*/ |
| return mc_send_command(mc_io, &cmd); |
| } |
| EXPORT_SYMBOL(dpbp_reset); |
| |
| /** |
| * dpbp_get_attributes - Retrieve DPBP 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 DPBP object |
| * @attr: Returned object's attributes |
| * |
| * Return: '0' on Success; Error code otherwise. |
| */ |
| int dpbp_get_attributes(struct fsl_mc_io *mc_io, |
| u32 cmd_flags, |
| u16 token, |
| struct dpbp_attr *attr) |
| { |
| struct mc_command cmd = { 0 }; |
| struct dpbp_rsp_get_attributes *rsp_params; |
| int err; |
| |
| /* prepare command */ |
| cmd.header = mc_encode_cmd_header(DPBP_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 dpbp_rsp_get_attributes *)cmd.params; |
| attr->bpid = le16_to_cpu(rsp_params->bpid); |
| attr->id = le32_to_cpu(rsp_params->id); |
| |
| return 0; |
| } |
| EXPORT_SYMBOL(dpbp_get_attributes); |
| |
| /** |
| * dpbp_get_api_version - Get Data Path Buffer Pool API version |
| * @mc_io: Pointer to Mc portal's I/O object |
| * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' |
| * @major_ver: Major version of Buffer Pool API |
| * @minor_ver: Minor version of Buffer Pool API |
| * |
| * Return: '0' on Success; Error code otherwise. |
| */ |
| int dpbp_get_api_version(struct fsl_mc_io *mc_io, |
| u32 cmd_flags, |
| u16 *major_ver, |
| u16 *minor_ver) |
| { |
| struct mc_command cmd = { 0 }; |
| int err; |
| |
| /* prepare command */ |
| cmd.header = mc_encode_cmd_header(DPBP_CMDID_GET_API_VERSION, |
| cmd_flags, 0); |
| |
| /* send command to mc */ |
| err = mc_send_command(mc_io, &cmd); |
| if (err) |
| return err; |
| |
| /* retrieve response parameters */ |
| mc_cmd_read_api_version(&cmd, major_ver, minor_ver); |
| |
| return 0; |
| } |
| EXPORT_SYMBOL(dpbp_get_api_version); |