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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 | // SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) /* * Copyright 2013-2016 Freescale Semiconductor Inc. * */ #include <linux/kernel.h> #include <linux/fsl/mc.h> #include "fsl-mc-private.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 fsl_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_GPL(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 fsl_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_GPL(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 fsl_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_GPL(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 fsl_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_GPL(dpbp_disable); /** * 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 fsl_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_GPL(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 fsl_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_GPL(dpbp_get_attributes); |