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32 #include <linux/kernel.h>
33 #include "../include/mc.h"
34 #include "../include/dpbp.h"
39 * dpbp_open() - Open a control session for the specified object.
40 * @mc_io: Pointer to MC portal's I/O object
41 * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
42 * @dpbp_id: DPBP unique ID
43 * @token: Returned token; use in subsequent API calls
45 * This function can be used to open a control session for an
46 * already created object; an object may have been declared in
47 * the DPL or by calling the dpbp_create function.
48 * This function returns a unique authentication token,
49 * associated with the specific object ID and the specific MC
50 * portal; this token must be used in all subsequent commands for
51 * this specific object
53 * Return: '0' on Success; Error code otherwise.
55 int dpbp_open(struct fsl_mc_io *mc_io,
60 struct mc_command cmd = { 0 };
61 struct dpbp_cmd_open *cmd_params;
65 cmd.header = mc_encode_cmd_header(DPBP_CMDID_OPEN,
67 cmd_params = (struct dpbp_cmd_open *)cmd.params;
68 cmd_params->dpbp_id = cpu_to_le32(dpbp_id);
70 /* send command to mc*/
71 err = mc_send_command(mc_io, &cmd);
75 /* retrieve response parameters */
76 *token = mc_cmd_hdr_read_token(&cmd);
80 EXPORT_SYMBOL(dpbp_open);
83 * dpbp_close() - Close the control session of the object
84 * @mc_io: Pointer to MC portal's I/O object
85 * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
86 * @token: Token of DPBP object
88 * After this function is called, no further operations are
89 * allowed on the object without opening a new control session.
91 * Return: '0' on Success; Error code otherwise.
93 int dpbp_close(struct fsl_mc_io *mc_io,
97 struct mc_command cmd = { 0 };
100 cmd.header = mc_encode_cmd_header(DPBP_CMDID_CLOSE, cmd_flags,
103 /* send command to mc*/
104 return mc_send_command(mc_io, &cmd);
106 EXPORT_SYMBOL(dpbp_close);
109 * dpbp_enable() - Enable the DPBP.
110 * @mc_io: Pointer to MC portal's I/O object
111 * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
112 * @token: Token of DPBP object
114 * Return: '0' on Success; Error code otherwise.
116 int dpbp_enable(struct fsl_mc_io *mc_io,
120 struct mc_command cmd = { 0 };
122 /* prepare command */
123 cmd.header = mc_encode_cmd_header(DPBP_CMDID_ENABLE, cmd_flags,
126 /* send command to mc*/
127 return mc_send_command(mc_io, &cmd);
129 EXPORT_SYMBOL(dpbp_enable);
132 * dpbp_disable() - Disable the DPBP.
133 * @mc_io: Pointer to MC portal's I/O object
134 * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
135 * @token: Token of DPBP object
137 * Return: '0' on Success; Error code otherwise.
139 int dpbp_disable(struct fsl_mc_io *mc_io,
143 struct mc_command cmd = { 0 };
145 /* prepare command */
146 cmd.header = mc_encode_cmd_header(DPBP_CMDID_DISABLE,
149 /* send command to mc*/
150 return mc_send_command(mc_io, &cmd);
152 EXPORT_SYMBOL(dpbp_disable);
155 * dpbp_is_enabled() - Check if the DPBP is enabled.
156 * @mc_io: Pointer to MC portal's I/O object
157 * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
158 * @token: Token of DPBP object
159 * @en: Returns '1' if object is enabled; '0' otherwise
161 * Return: '0' on Success; Error code otherwise.
163 int dpbp_is_enabled(struct fsl_mc_io *mc_io,
168 struct mc_command cmd = { 0 };
169 struct dpbp_rsp_is_enabled *rsp_params;
171 /* prepare command */
172 cmd.header = mc_encode_cmd_header(DPBP_CMDID_IS_ENABLED, cmd_flags,
175 /* send command to mc*/
176 err = mc_send_command(mc_io, &cmd);
180 /* retrieve response parameters */
181 rsp_params = (struct dpbp_rsp_is_enabled *)cmd.params;
182 *en = rsp_params->enabled & DPBP_ENABLE;
186 EXPORT_SYMBOL(dpbp_is_enabled);
189 * dpbp_reset() - Reset the DPBP, returns the object to initial state.
190 * @mc_io: Pointer to MC portal's I/O object
191 * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
192 * @token: Token of DPBP object
194 * Return: '0' on Success; Error code otherwise.
196 int dpbp_reset(struct fsl_mc_io *mc_io,
200 struct mc_command cmd = { 0 };
202 /* prepare command */
203 cmd.header = mc_encode_cmd_header(DPBP_CMDID_RESET,
206 /* send command to mc*/
207 return mc_send_command(mc_io, &cmd);
209 EXPORT_SYMBOL(dpbp_reset);
212 * dpbp_get_attributes - Retrieve DPBP attributes.
214 * @mc_io: Pointer to MC portal's I/O object
215 * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
216 * @token: Token of DPBP object
217 * @attr: Returned object's attributes
219 * Return: '0' on Success; Error code otherwise.
221 int dpbp_get_attributes(struct fsl_mc_io *mc_io,
224 struct dpbp_attr *attr)
226 struct mc_command cmd = { 0 };
227 struct dpbp_rsp_get_attributes *rsp_params;
230 /* prepare command */
231 cmd.header = mc_encode_cmd_header(DPBP_CMDID_GET_ATTR,
234 /* send command to mc*/
235 err = mc_send_command(mc_io, &cmd);
239 /* retrieve response parameters */
240 rsp_params = (struct dpbp_rsp_get_attributes *)cmd.params;
241 attr->bpid = le16_to_cpu(rsp_params->bpid);
242 attr->id = le32_to_cpu(rsp_params->id);
246 EXPORT_SYMBOL(dpbp_get_attributes);
249 * dpbp_get_api_version - Get Data Path Buffer Pool API version
250 * @mc_io: Pointer to Mc portal's I/O object
251 * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
252 * @major_ver: Major version of Buffer Pool API
253 * @minor_ver: Minor version of Buffer Pool API
255 * Return: '0' on Success; Error code otherwise.
257 int dpbp_get_api_version(struct fsl_mc_io *mc_io,
262 struct mc_command cmd = { 0 };
265 /* prepare command */
266 cmd.header = mc_encode_cmd_header(DPBP_CMDID_GET_API_VERSION,
269 /* send command to mc */
270 err = mc_send_command(mc_io, &cmd);
274 /* retrieve response parameters */
275 mc_cmd_read_api_version(&cmd, major_ver, minor_ver);
279 EXPORT_SYMBOL(dpbp_get_api_version);