diff options
Diffstat (limited to 'drivers/net/ethernet/freescale/dpaa2/dpmac.c')
| -rw-r--r-- | drivers/net/ethernet/freescale/dpaa2/dpmac.c | 237 |
1 files changed, 237 insertions, 0 deletions
diff --git a/drivers/net/ethernet/freescale/dpaa2/dpmac.c b/drivers/net/ethernet/freescale/dpaa2/dpmac.c new file mode 100644 index 000000000..f440a4c3b --- /dev/null +++ b/drivers/net/ethernet/freescale/dpaa2/dpmac.c @@ -0,0 +1,237 @@ +// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) +/* Copyright 2013-2016 Freescale Semiconductor Inc. + * Copyright 2019 NXP + */ +#include <linux/fsl/mc.h> +#include "dpmac.h" +#include "dpmac-cmd.h" + +/** + * dpmac_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_' + * @dpmac_id: DPMAC 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 dpmac_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 dpmac_open(struct fsl_mc_io *mc_io, + u32 cmd_flags, + int dpmac_id, + u16 *token) +{ + struct dpmac_cmd_open *cmd_params; + struct fsl_mc_command cmd = { 0 }; + int err; + + /* prepare command */ + cmd.header = mc_encode_cmd_header(DPMAC_CMDID_OPEN, + cmd_flags, + 0); + cmd_params = (struct dpmac_cmd_open *)cmd.params; + cmd_params->dpmac_id = cpu_to_le32(dpmac_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; +} + +/** + * dpmac_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 DPMAC 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 dpmac_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(DPMAC_CMDID_CLOSE, cmd_flags, + token); + + /* send command to mc*/ + return mc_send_command(mc_io, &cmd); +} + +/** + * dpmac_get_attributes - Retrieve DPMAC 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 DPMAC object + * @attr: Returned object's attributes + * + * Return: '0' on Success; Error code otherwise. + */ +int dpmac_get_attributes(struct fsl_mc_io *mc_io, + u32 cmd_flags, + u16 token, + struct dpmac_attr *attr) +{ + struct dpmac_rsp_get_attributes *rsp_params; + struct fsl_mc_command cmd = { 0 }; + int err; + + /* prepare command */ + cmd.header = mc_encode_cmd_header(DPMAC_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 dpmac_rsp_get_attributes *)cmd.params; + attr->eth_if = rsp_params->eth_if; + attr->link_type = rsp_params->link_type; + attr->id = le16_to_cpu(rsp_params->id); + attr->max_rate = le32_to_cpu(rsp_params->max_rate); + + return 0; +} + +/** + * dpmac_set_link_state() - Set the Ethernet link status + * @mc_io: Pointer to opaque I/O object + * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' + * @token: Token of DPMAC object + * @link_state: Link state configuration + * + * Return: '0' on Success; Error code otherwise. + */ +int dpmac_set_link_state(struct fsl_mc_io *mc_io, + u32 cmd_flags, + u16 token, + struct dpmac_link_state *link_state) +{ + struct dpmac_cmd_set_link_state *cmd_params; + struct fsl_mc_command cmd = { 0 }; + + /* prepare command */ + cmd.header = mc_encode_cmd_header(DPMAC_CMDID_SET_LINK_STATE, + cmd_flags, + token); + cmd_params = (struct dpmac_cmd_set_link_state *)cmd.params; + cmd_params->options = cpu_to_le64(link_state->options); + cmd_params->rate = cpu_to_le32(link_state->rate); + dpmac_set_field(cmd_params->state, STATE, link_state->up); + dpmac_set_field(cmd_params->state, STATE_VALID, + link_state->state_valid); + cmd_params->supported = cpu_to_le64(link_state->supported); + cmd_params->advertising = cpu_to_le64(link_state->advertising); + + /* send command to mc*/ + return mc_send_command(mc_io, &cmd); +} + +/** + * dpmac_get_counter() - Read a specific DPMAC counter + * @mc_io: Pointer to opaque I/O object + * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' + * @token: Token of DPMAC object + * @id: The requested counter ID + * @value: Returned counter value + * + * Return: The requested counter; '0' otherwise. + */ +int dpmac_get_counter(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token, + enum dpmac_counter_id id, u64 *value) +{ + struct dpmac_cmd_get_counter *dpmac_cmd; + struct dpmac_rsp_get_counter *dpmac_rsp; + struct fsl_mc_command cmd = { 0 }; + int err = 0; + + cmd.header = mc_encode_cmd_header(DPMAC_CMDID_GET_COUNTER, + cmd_flags, + token); + dpmac_cmd = (struct dpmac_cmd_get_counter *)cmd.params; + dpmac_cmd->id = id; + + err = mc_send_command(mc_io, &cmd); + if (err) + return err; + + dpmac_rsp = (struct dpmac_rsp_get_counter *)cmd.params; + *value = le64_to_cpu(dpmac_rsp->counter); + + return 0; +} + +/** + * dpmac_get_api_version() - Get Data Path MAC 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 data path mac API + * @minor_ver: Minor version of data path mac API + * + * Return: '0' on Success; Error code otherwise. + */ +int dpmac_get_api_version(struct fsl_mc_io *mc_io, u32 cmd_flags, + u16 *major_ver, u16 *minor_ver) +{ + struct dpmac_rsp_get_api_version *rsp_params; + struct fsl_mc_command cmd = { 0 }; + int err; + + cmd.header = mc_encode_cmd_header(DPMAC_CMDID_GET_API_VERSION, + cmd_flags, + 0); + + err = mc_send_command(mc_io, &cmd); + if (err) + return err; + + rsp_params = (struct dpmac_rsp_get_api_version *)cmd.params; + *major_ver = le16_to_cpu(rsp_params->major); + *minor_ver = le16_to_cpu(rsp_params->minor); + + return 0; +} + +/** + * dpmac_set_protocol() - Reconfigure the DPMAC protocol + * @mc_io: Pointer to opaque I/O object + * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' + * @token: Token of DPMAC object + * @protocol: New protocol for the DPMAC to be reconfigured in. + * + * Return: '0' on Success; Error code otherwise. + */ +int dpmac_set_protocol(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token, + enum dpmac_eth_if protocol) +{ + struct dpmac_cmd_set_protocol *cmd_params; + struct fsl_mc_command cmd = { 0 }; + + cmd.header = mc_encode_cmd_header(DPMAC_CMDID_SET_PROTOCOL, + cmd_flags, token); + cmd_params = (struct dpmac_cmd_set_protocol *)cmd.params; + cmd_params->eth_if = protocol; + + return mc_send_command(mc_io, &cmd); +} |