diff options
Diffstat (limited to 'drivers/net/dpaa2/mc/dpni.c')
| -rw-r--r-- | drivers/net/dpaa2/mc/dpni.c | 1326 |
1 files changed, 1132 insertions, 194 deletions
diff --git a/drivers/net/dpaa2/mc/dpni.c b/drivers/net/dpaa2/mc/dpni.c index c2d39691..6f671fe0 100644 --- a/drivers/net/dpaa2/mc/dpni.c +++ b/drivers/net/dpaa2/mc/dpni.c @@ -42,100 +42,39 @@ #include <fsl_dpni.h> #include <fsl_dpni_cmd.h> -int dpni_prepare_key_cfg(const struct dpkg_profile_cfg *cfg, - uint8_t *key_cfg_buf) -{ - int i, j; - int offset = 0; - int param = 1; - uint64_t *params = (uint64_t *)key_cfg_buf; - - if (!key_cfg_buf || !cfg) - return -EINVAL; - - params[0] |= mc_enc(0, 8, cfg->num_extracts); - params[0] = cpu_to_le64(params[0]); - - if (cfg->num_extracts >= DPKG_MAX_NUM_OF_EXTRACTS) - return -EINVAL; - - for (i = 0; i < cfg->num_extracts; i++) { - switch (cfg->extracts[i].type) { - case DPKG_EXTRACT_FROM_HDR: - params[param] |= mc_enc(0, 8, - cfg->extracts[i].extract.from_hdr.prot); - params[param] |= mc_enc(8, 4, - cfg->extracts[i].extract.from_hdr.type); - params[param] |= mc_enc(16, 8, - cfg->extracts[i].extract.from_hdr.size); - params[param] |= mc_enc(24, 8, - cfg->extracts[i].extract. - from_hdr.offset); - params[param] |= mc_enc(32, 32, - cfg->extracts[i].extract. - from_hdr.field); - params[param] = cpu_to_le64(params[param]); - param++; - params[param] |= mc_enc(0, 8, - cfg->extracts[i].extract. - from_hdr.hdr_index); - break; - case DPKG_EXTRACT_FROM_DATA: - params[param] |= mc_enc(16, 8, - cfg->extracts[i].extract. - from_data.size); - params[param] |= mc_enc(24, 8, - cfg->extracts[i].extract. - from_data.offset); - params[param] = cpu_to_le64(params[param]); - param++; - break; - case DPKG_EXTRACT_FROM_PARSE: - params[param] |= mc_enc(16, 8, - cfg->extracts[i].extract. - from_parse.size); - params[param] |= mc_enc(24, 8, - cfg->extracts[i].extract. - from_parse.offset); - params[param] = cpu_to_le64(params[param]); - param++; - break; - default: - return -EINVAL; - } - params[param] |= mc_enc( - 24, 8, cfg->extracts[i].num_of_byte_masks); - params[param] |= mc_enc(32, 4, cfg->extracts[i].type); - params[param] = cpu_to_le64(params[param]); - param++; - for (offset = 0, j = 0; - j < DPKG_NUM_OF_MASKS; - offset += 16, j++) { - params[param] |= mc_enc( - (offset), 8, cfg->extracts[i].masks[j].mask); - params[param] |= mc_enc( - (offset + 8), 8, - cfg->extracts[i].masks[j].offset); - } - params[param] = cpu_to_le64(params[param]); - param++; - } - return 0; -} - +/** + * dpni_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_' + * @dpni_id: DPNI 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 dpni_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 dpni_open(struct fsl_mc_io *mc_io, uint32_t cmd_flags, int dpni_id, uint16_t *token) { struct mc_command cmd = { 0 }; + struct dpni_cmd_open *cmd_params; + int err; /* prepare command */ cmd.header = mc_encode_cmd_header(DPNI_CMDID_OPEN, cmd_flags, 0); - DPNI_CMD_OPEN(cmd, dpni_id); + cmd_params = (struct dpni_cmd_open *)cmd.params; + cmd_params->dpni_id = cpu_to_le32(dpni_id); /* send command to mc*/ err = mc_send_command(mc_io, &cmd); @@ -143,11 +82,22 @@ int dpni_open(struct fsl_mc_io *mc_io, return err; /* retrieve response parameters */ - *token = MC_CMD_HDR_READ_TOKEN(cmd.header); + *token = mc_cmd_hdr_read_token(&cmd); return 0; } +/** + * dpni_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 DPNI 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 dpni_close(struct fsl_mc_io *mc_io, uint32_t cmd_flags, uint16_t token) @@ -163,12 +113,35 @@ int dpni_close(struct fsl_mc_io *mc_io, return mc_send_command(mc_io, &cmd); } -int dpni_create(struct fsl_mc_io *mc_io, - uint16_t dprc_token, - uint32_t cmd_flags, - const struct dpni_cfg *cfg, - uint32_t *obj_id) +/** + * dpni_create() - Create the DPNI object + * @mc_io: Pointer to MC portal's I/O object + * @dprc_token: Parent container token; '0' for default container + * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' + * @cfg: Configuration structure + * @obj_id: Returned object id + * + * Create the DPNI object, allocate required resources and + * perform required initialization. + * + * The object can be created either by declaring it in the + * DPL file, or by calling this function. + * + * The function accepts an authentication token of a parent + * container that this object should be assigned to. The token + * can be '0' so the object will be assigned to the default container. + * The newly created object can be opened with the returned + * object id and using the container's associated tokens and MC portals. + * + * Return: '0' on Success; Error code otherwise. + */ +int dpni_create(struct fsl_mc_io *mc_io, + uint16_t dprc_token, + uint32_t cmd_flags, + const struct dpni_cfg *cfg, + uint32_t *obj_id) { + struct dpni_cmd_create *cmd_params; struct mc_command cmd = { 0 }; int err; @@ -176,7 +149,14 @@ int dpni_create(struct fsl_mc_io *mc_io, cmd.header = mc_encode_cmd_header(DPNI_CMDID_CREATE, cmd_flags, dprc_token); - DPNI_CMD_CREATE(cmd, cfg); + cmd_params = (struct dpni_cmd_create *)cmd.params; + cmd_params->options = cpu_to_le32(cfg->options); + cmd_params->num_queues = cfg->num_queues; + cmd_params->num_tcs = cfg->num_tcs; + cmd_params->mac_filter_entries = cfg->mac_filter_entries; + cmd_params->vlan_filter_entries = cfg->vlan_filter_entries; + cmd_params->qos_entries = cfg->qos_entries; + cmd_params->fs_entries = cpu_to_le16(cfg->fs_entries); /* send command to mc*/ err = mc_send_command(mc_io, &cmd); @@ -184,16 +164,32 @@ int dpni_create(struct fsl_mc_io *mc_io, return err; /* retrieve response parameters */ - CMD_CREATE_RSP_GET_OBJ_ID_PARAM0(cmd, *obj_id); + *obj_id = mc_cmd_read_object_id(&cmd); return 0; } -int dpni_destroy(struct fsl_mc_io *mc_io, - uint16_t dprc_token, - uint32_t cmd_flags, - uint32_t object_id) +/** + * dpni_destroy() - Destroy the DPNI object and release all its resources. + * @mc_io: Pointer to MC portal's I/O object + * @dprc_token: Parent container token; '0' for default container + * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' + * @object_id: The object id; it must be a valid id within the container that + * created this object; + * + * The function accepts the authentication token of the parent container that + * created the object (not the one that currently owns the object). The object + * is searched within parent using the provided 'object_id'. + * All tokens to the object must be closed before calling destroy. + * + * Return: '0' on Success; error code otherwise. + */ +int dpni_destroy(struct fsl_mc_io *mc_io, + uint16_t dprc_token, + uint32_t cmd_flags, + uint32_t object_id) { + struct dpni_cmd_destroy *cmd_params; struct mc_command cmd = { 0 }; /* prepare command */ @@ -201,28 +197,63 @@ int dpni_destroy(struct fsl_mc_io *mc_io, cmd_flags, dprc_token); /* set object id to destroy */ - CMD_DESTROY_SET_OBJ_ID_PARAM0(cmd, object_id); + cmd_params = (struct dpni_cmd_destroy *)cmd.params; + cmd_params->dpsw_id = cpu_to_le32(object_id); + /* send command to mc*/ return mc_send_command(mc_io, &cmd); } +/** + * dpni_set_pools() - Set buffer pools configuration + * @mc_io: Pointer to MC portal's I/O object + * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' + * @token: Token of DPNI object + * @cfg: Buffer pools configuration + * + * mandatory for DPNI operation + * warning:Allowed only when DPNI is disabled + * + * Return: '0' on Success; Error code otherwise. + */ int dpni_set_pools(struct fsl_mc_io *mc_io, uint32_t cmd_flags, uint16_t token, const struct dpni_pools_cfg *cfg) { struct mc_command cmd = { 0 }; + struct dpni_cmd_set_pools *cmd_params; + int i; /* prepare command */ cmd.header = mc_encode_cmd_header(DPNI_CMDID_SET_POOLS, cmd_flags, token); - DPNI_CMD_SET_POOLS(cmd, cfg); + cmd_params = (struct dpni_cmd_set_pools *)cmd.params; + cmd_params->num_dpbp = cfg->num_dpbp; + for (i = 0; i < DPNI_MAX_DPBP; i++) { + cmd_params->pool[i].dpbp_id = + cpu_to_le16(cfg->pools[i].dpbp_id); + cmd_params->pool[i].priority_mask = + cfg->pools[i].priority_mask; + cmd_params->buffer_size[i] = + cpu_to_le16(cfg->pools[i].buffer_size); + cmd_params->backup_pool_mask |= + DPNI_BACKUP_POOL(cfg->pools[i].backup_pool, i); + } /* send command to mc*/ return mc_send_command(mc_io, &cmd); } +/** + * dpni_enable() - Enable the DPNI, allow sending and receiving frames. + * @mc_io: Pointer to MC portal's I/O object + * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' + * @token: Token of DPNI object + * + * Return: '0' on Success; Error code otherwise. + */ int dpni_enable(struct fsl_mc_io *mc_io, uint32_t cmd_flags, uint16_t token) @@ -238,6 +269,14 @@ int dpni_enable(struct fsl_mc_io *mc_io, return mc_send_command(mc_io, &cmd); } +/** + * dpni_disable() - Disable the DPNI, stop sending and receiving frames. + * @mc_io: Pointer to MC portal's I/O object + * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' + * @token: Token of DPNI object + * + * Return: '0' on Success; Error code otherwise. + */ int dpni_disable(struct fsl_mc_io *mc_io, uint32_t cmd_flags, uint16_t token) @@ -253,15 +292,27 @@ int dpni_disable(struct fsl_mc_io *mc_io, return mc_send_command(mc_io, &cmd); } +/** + * dpni_is_enabled() - Check if the DPNI 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 DPNI object + * @en: Returns '1' if object is enabled; '0' otherwise + * + * Return: '0' on Success; Error code otherwise. + */ int dpni_is_enabled(struct fsl_mc_io *mc_io, uint32_t cmd_flags, uint16_t token, int *en) { struct mc_command cmd = { 0 }; + struct dpni_rsp_is_enabled *rsp_params; int err; + /* prepare command */ - cmd.header = mc_encode_cmd_header(DPNI_CMDID_IS_ENABLED, cmd_flags, + cmd.header = mc_encode_cmd_header(DPNI_CMDID_IS_ENABLED, + cmd_flags, token); /* send command to mc*/ @@ -270,11 +321,20 @@ int dpni_is_enabled(struct fsl_mc_io *mc_io, return err; /* retrieve response parameters */ - DPNI_RSP_IS_ENABLED(cmd, *en); + rsp_params = (struct dpni_rsp_is_enabled *)cmd.params; + *en = dpni_get_field(rsp_params->enabled, ENABLE); return 0; } +/** + * dpni_reset() - Reset the DPNI, 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 DPNI object + * + * Return: '0' on Success; Error code otherwise. + */ int dpni_reset(struct fsl_mc_io *mc_io, uint32_t cmd_flags, uint16_t token) @@ -290,12 +350,256 @@ int dpni_reset(struct fsl_mc_io *mc_io, return mc_send_command(mc_io, &cmd); } +/** + * dpni_set_irq_enable() - Set overall interrupt 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 DPNI object + * @irq_index: The interrupt index to configure + * @en: Interrupt state: - enable = 1, disable = 0 + * + * Allows GPP software to control when interrupts are generated. + * Each interrupt can have up to 32 causes. The enable/disable control's the + * overall interrupt state. if the interrupt is disabled no causes will cause + * an interrupt. + * + * Return: '0' on Success; Error code otherwise. + */ +int dpni_set_irq_enable(struct fsl_mc_io *mc_io, + uint32_t cmd_flags, + uint16_t token, + uint8_t irq_index, + uint8_t en) +{ + struct mc_command cmd = { 0 }; + struct dpni_cmd_set_irq_enable *cmd_params; + + /* prepare command */ + cmd.header = mc_encode_cmd_header(DPNI_CMDID_SET_IRQ_ENABLE, + cmd_flags, + token); + cmd_params = (struct dpni_cmd_set_irq_enable *)cmd.params; + dpni_set_field(cmd_params->enable, ENABLE, en); + cmd_params->irq_index = irq_index; + + /* send command to mc*/ + return mc_send_command(mc_io, &cmd); +} + +/** + * dpni_get_irq_enable() - Get overall interrupt 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 DPNI object + * @irq_index: The interrupt index to configure + * @en: Returned interrupt state - enable = 1, disable = 0 + * + * Return: '0' on Success; Error code otherwise. + */ +int dpni_get_irq_enable(struct fsl_mc_io *mc_io, + uint32_t cmd_flags, + uint16_t token, + uint8_t irq_index, + uint8_t *en) +{ + struct mc_command cmd = { 0 }; + struct dpni_cmd_get_irq_enable *cmd_params; + struct dpni_rsp_get_irq_enable *rsp_params; + + int err; + + /* prepare command */ + cmd.header = mc_encode_cmd_header(DPNI_CMDID_GET_IRQ_ENABLE, + cmd_flags, + token); + cmd_params = (struct dpni_cmd_get_irq_enable *)cmd.params; + cmd_params->irq_index = irq_index; + + /* send command to mc*/ + err = mc_send_command(mc_io, &cmd); + if (err) + return err; + + /* retrieve response parameters */ + rsp_params = (struct dpni_rsp_get_irq_enable *)cmd.params; + *en = dpni_get_field(rsp_params->enabled, ENABLE); + + return 0; +} + +/** + * dpni_set_irq_mask() - Set interrupt mask. + * @mc_io: Pointer to MC portal's I/O object + * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' + * @token: Token of DPNI object + * @irq_index: The interrupt index to configure + * @mask: Event mask to trigger interrupt; + * each bit: + * 0 = ignore event + * 1 = consider event for asserting IRQ + * + * Every interrupt can have up to 32 causes and the interrupt model supports + * masking/unmasking each cause independently + * + * Return: '0' on Success; Error code otherwise. + */ +int dpni_set_irq_mask(struct fsl_mc_io *mc_io, + uint32_t cmd_flags, + uint16_t token, + uint8_t irq_index, + uint32_t mask) +{ + struct mc_command cmd = { 0 }; + struct dpni_cmd_set_irq_mask *cmd_params; + + /* prepare command */ + cmd.header = mc_encode_cmd_header(DPNI_CMDID_SET_IRQ_MASK, + cmd_flags, + token); + cmd_params = (struct dpni_cmd_set_irq_mask *)cmd.params; + cmd_params->mask = cpu_to_le32(mask); + cmd_params->irq_index = irq_index; + + /* send command to mc*/ + return mc_send_command(mc_io, &cmd); +} + +/** + * dpni_get_irq_mask() - Get interrupt mask. + * @mc_io: Pointer to MC portal's I/O object + * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' + * @token: Token of DPNI object + * @irq_index: The interrupt index to configure + * @mask: Returned event mask to trigger interrupt + * + * Every interrupt can have up to 32 causes and the interrupt model supports + * masking/unmasking each cause independently + * + * Return: '0' on Success; Error code otherwise. + */ +int dpni_get_irq_mask(struct fsl_mc_io *mc_io, + uint32_t cmd_flags, + uint16_t token, + uint8_t irq_index, + uint32_t *mask) +{ + struct mc_command cmd = { 0 }; + struct dpni_cmd_get_irq_mask *cmd_params; + struct dpni_rsp_get_irq_mask *rsp_params; + int err; + + /* prepare command */ + cmd.header = mc_encode_cmd_header(DPNI_CMDID_GET_IRQ_MASK, + cmd_flags, + token); + cmd_params = (struct dpni_cmd_get_irq_mask *)cmd.params; + cmd_params->irq_index = irq_index; + + /* send command to mc*/ + err = mc_send_command(mc_io, &cmd); + if (err) + return err; + + /* retrieve response parameters */ + rsp_params = (struct dpni_rsp_get_irq_mask *)cmd.params; + *mask = le32_to_cpu(rsp_params->mask); + + return 0; +} + +/** + * dpni_get_irq_status() - Get the current status of any pending interrupts. + * @mc_io: Pointer to MC portal's I/O object + * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' + * @token: Token of DPNI object + * @irq_index: The interrupt index to configure + * @status: Returned interrupts status - one bit per cause: + * 0 = no interrupt pending + * 1 = interrupt pending + * + * Return: '0' on Success; Error code otherwise. + */ +int dpni_get_irq_status(struct fsl_mc_io *mc_io, + uint32_t cmd_flags, + uint16_t token, + uint8_t irq_index, + uint32_t *status) +{ + struct mc_command cmd = { 0 }; + struct dpni_cmd_get_irq_status *cmd_params; + struct dpni_rsp_get_irq_status *rsp_params; + int err; + + /* prepare command */ + cmd.header = mc_encode_cmd_header(DPNI_CMDID_GET_IRQ_STATUS, + cmd_flags, + token); + cmd_params = (struct dpni_cmd_get_irq_status *)cmd.params; + cmd_params->status = cpu_to_le32(*status); + cmd_params->irq_index = irq_index; + + /* send command to mc*/ + err = mc_send_command(mc_io, &cmd); + if (err) + return err; + + /* retrieve response parameters */ + rsp_params = (struct dpni_rsp_get_irq_status *)cmd.params; + *status = le32_to_cpu(rsp_params->status); + + return 0; +} + +/** + * dpni_clear_irq_status() - Clear a pending interrupt's status + * @mc_io: Pointer to MC portal's I/O object + * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' + * @token: Token of DPNI object + * @irq_index: The interrupt index to configure + * @status: bits to clear (W1C) - one bit per cause: + * 0 = don't change + * 1 = clear status bit + * + * Return: '0' on Success; Error code otherwise. + */ +int dpni_clear_irq_status(struct fsl_mc_io *mc_io, + uint32_t cmd_flags, + uint16_t token, + uint8_t irq_index, + uint32_t status) +{ + struct mc_command cmd = { 0 }; + struct dpni_cmd_clear_irq_status *cmd_params; + + /* prepare command */ + cmd.header = mc_encode_cmd_header(DPNI_CMDID_CLEAR_IRQ_STATUS, + cmd_flags, + token); + cmd_params = (struct dpni_cmd_clear_irq_status *)cmd.params; + cmd_params->irq_index = irq_index; + cmd_params->status = cpu_to_le32(status); + + /* send command to mc*/ + return mc_send_command(mc_io, &cmd); +} + +/** + * dpni_get_attributes() - Retrieve DPNI 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 DPNI object + * @attr: Object's attributes + * + * Return: '0' on Success; Error code otherwise. + */ int dpni_get_attributes(struct fsl_mc_io *mc_io, uint32_t cmd_flags, uint16_t token, struct dpni_attr *attr) { struct mc_command cmd = { 0 }; + struct dpni_rsp_get_attr *rsp_params; + int err; /* prepare command */ @@ -309,28 +613,65 @@ int dpni_get_attributes(struct fsl_mc_io *mc_io, return err; /* retrieve response parameters */ - DPNI_RSP_GET_ATTR(cmd, attr); + rsp_params = (struct dpni_rsp_get_attr *)cmd.params; + attr->options = le32_to_cpu(rsp_params->options); + attr->num_queues = rsp_params->num_queues; + attr->num_rx_tcs = rsp_params->num_rx_tcs; + attr->num_tx_tcs = rsp_params->num_tx_tcs; + attr->mac_filter_entries = rsp_params->mac_filter_entries; + attr->vlan_filter_entries = rsp_params->vlan_filter_entries; + attr->qos_entries = rsp_params->qos_entries; + attr->fs_entries = le16_to_cpu(rsp_params->fs_entries); + attr->qos_key_size = rsp_params->qos_key_size; + attr->fs_key_size = rsp_params->fs_key_size; + attr->wriop_version = le16_to_cpu(rsp_params->wriop_version); return 0; } +/** + * dpni_set_errors_behavior() - Set errors behavior + * @mc_io: Pointer to MC portal's I/O object + * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' + * @token: Token of DPNI object + * @cfg: Errors configuration + * + * This function may be called numerous times with different + * error masks + * + * Return: '0' on Success; Error code otherwise. + */ int dpni_set_errors_behavior(struct fsl_mc_io *mc_io, uint32_t cmd_flags, uint16_t token, - struct dpni_error_cfg *cfg) + struct dpni_error_cfg *cfg) { struct mc_command cmd = { 0 }; + struct dpni_cmd_set_errors_behavior *cmd_params; /* prepare command */ cmd.header = mc_encode_cmd_header(DPNI_CMDID_SET_ERRORS_BEHAVIOR, cmd_flags, token); - DPNI_CMD_SET_ERRORS_BEHAVIOR(cmd, cfg); + cmd_params = (struct dpni_cmd_set_errors_behavior *)cmd.params; + cmd_params->errors = cpu_to_le32(cfg->errors); + dpni_set_field(cmd_params->flags, ERROR_ACTION, cfg->error_action); + dpni_set_field(cmd_params->flags, FRAME_ANN, cfg->set_frame_annotation); /* send command to mc*/ return mc_send_command(mc_io, &cmd); } +/** + * dpni_get_buffer_layout() - Retrieve buffer layout 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 DPNI object + * @qtype: Type of queue to retrieve configuration for + * @layout: Returns buffer layout attributes + * + * Return: '0' on Success; Error code otherwise. + */ int dpni_get_buffer_layout(struct fsl_mc_io *mc_io, uint32_t cmd_flags, uint16_t token, @@ -338,13 +679,16 @@ int dpni_get_buffer_layout(struct fsl_mc_io *mc_io, struct dpni_buffer_layout *layout) { struct mc_command cmd = { 0 }; + struct dpni_cmd_get_buffer_layout *cmd_params; + struct dpni_rsp_get_buffer_layout *rsp_params; int err; /* prepare command */ cmd.header = mc_encode_cmd_header(DPNI_CMDID_GET_BUFFER_LAYOUT, cmd_flags, token); - DPNI_CMD_GET_BUFFER_LAYOUT(cmd, qtype); + cmd_params = (struct dpni_cmd_get_buffer_layout *)cmd.params; + cmd_params->qtype = qtype; /* send command to mc*/ err = mc_send_command(mc_io, &cmd); @@ -352,29 +696,72 @@ int dpni_get_buffer_layout(struct fsl_mc_io *mc_io, return err; /* retrieve response parameters */ - DPNI_RSP_GET_BUFFER_LAYOUT(cmd, layout); + rsp_params = (struct dpni_rsp_get_buffer_layout *)cmd.params; + layout->pass_timestamp = dpni_get_field(rsp_params->flags, PASS_TS); + layout->pass_parser_result = dpni_get_field(rsp_params->flags, PASS_PR); + layout->pass_frame_status = dpni_get_field(rsp_params->flags, PASS_FS); + layout->private_data_size = le16_to_cpu(rsp_params->private_data_size); + layout->data_align = le16_to_cpu(rsp_params->data_align); + layout->data_head_room = le16_to_cpu(rsp_params->head_room); + layout->data_tail_room = le16_to_cpu(rsp_params->tail_room); return 0; } +/** + * dpni_set_buffer_layout() - Set buffer layout configuration. + * @mc_io: Pointer to MC portal's I/O object + * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' + * @token: Token of DPNI object + * @qtype: Type of queue this configuration applies to + * @layout: Buffer layout configuration + * + * Return: '0' on Success; Error code otherwise. + * + * @warning Allowed only when DPNI is disabled + */ int dpni_set_buffer_layout(struct fsl_mc_io *mc_io, uint32_t cmd_flags, - uint16_t token, - enum dpni_queue_type qtype, - const struct dpni_buffer_layout *layout) + uint16_t token, + enum dpni_queue_type qtype, + const struct dpni_buffer_layout *layout) { struct mc_command cmd = { 0 }; + struct dpni_cmd_set_buffer_layout *cmd_params; /* prepare command */ cmd.header = mc_encode_cmd_header(DPNI_CMDID_SET_BUFFER_LAYOUT, cmd_flags, token); - DPNI_CMD_SET_BUFFER_LAYOUT(cmd, qtype, layout); + cmd_params = (struct dpni_cmd_set_buffer_layout *)cmd.params; + cmd_params->qtype = qtype; + cmd_params->options = cpu_to_le16(layout->options); + dpni_set_field(cmd_params->flags, PASS_TS, layout->pass_timestamp); + dpni_set_field(cmd_params->flags, PASS_PR, layout->pass_parser_result); + dpni_set_field(cmd_params->flags, PASS_FS, layout->pass_frame_status); + cmd_params->private_data_size = cpu_to_le16(layout->private_data_size); + cmd_params->data_align = cpu_to_le16(layout->data_align); + cmd_params->head_room = cpu_to_le16(layout->data_head_room); + cmd_params->tail_room = cpu_to_le16(layout->data_tail_room); /* send command to mc*/ return mc_send_command(mc_io, &cmd); } +/** + * dpni_set_offload() - Set DPNI offload configuration. + * @mc_io: Pointer to MC portal's I/O object + * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' + * @token: Token of DPNI object + * @type: Type of DPNI offload + * @config: Offload configuration. + * For checksum offloads, non-zero value enables the offload + * + * Return: '0' on Success; Error code otherwise. + * + * @warning Allowed only when DPNI is disabled + */ + int dpni_set_offload(struct fsl_mc_io *mc_io, uint32_t cmd_flags, uint16_t token, @@ -382,17 +769,32 @@ int dpni_set_offload(struct fsl_mc_io *mc_io, uint32_t config) { struct mc_command cmd = { 0 }; + struct dpni_cmd_set_offload *cmd_params; - /* prepare command */ cmd.header = mc_encode_cmd_header(DPNI_CMDID_SET_OFFLOAD, cmd_flags, token); - DPNI_CMD_SET_OFFLOAD(cmd, type, config); + cmd_params = (struct dpni_cmd_set_offload *)cmd.params; + cmd_params->dpni_offload = type; + cmd_params->config = cpu_to_le32(config); - /* send command to mc*/ return mc_send_command(mc_io, &cmd); } +/** + * dpni_get_offload() - Get DPNI offload configuration. + * @mc_io: Pointer to MC portal's I/O object + * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' + * @token: Token of DPNI object + * @type: Type of DPNI offload + * @config: Offload configuration. + * For checksum offloads, a value of 1 indicates that the + * offload is enabled. + * + * Return: '0' on Success; Error code otherwise. + * + * @warning Allowed only when DPNI is disabled + */ int dpni_get_offload(struct fsl_mc_io *mc_io, uint32_t cmd_flags, uint16_t token, @@ -400,13 +802,16 @@ int dpni_get_offload(struct fsl_mc_io *mc_io, uint32_t *config) { struct mc_command cmd = { 0 }; + struct dpni_cmd_get_offload *cmd_params; + struct dpni_rsp_get_offload *rsp_params; int err; /* prepare command */ cmd.header = mc_encode_cmd_header(DPNI_CMDID_GET_OFFLOAD, cmd_flags, token); - DPNI_CMD_GET_OFFLOAD(cmd, type); + cmd_params = (struct dpni_cmd_get_offload *)cmd.params; + cmd_params->dpni_offload = type; /* send command to mc*/ err = mc_send_command(mc_io, &cmd); @@ -414,11 +819,24 @@ int dpni_get_offload(struct fsl_mc_io *mc_io, return err; /* retrieve response parameters */ - DPNI_RSP_GET_OFFLOAD(cmd, *config); + rsp_params = (struct dpni_rsp_get_offload *)cmd.params; + *config = le32_to_cpu(rsp_params->config); return 0; } +/** + * dpni_get_qdid() - Get the Queuing Destination ID (QDID) that should be used + * for enqueue operations + * @mc_io: Pointer to MC portal's I/O object + * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' + * @token: Token of DPNI object + * @qtype: Type of queue to receive QDID for + * @qdid: Returned virtual QDID value that should be used as an argument + * in all enqueue operations + * + * Return: '0' on Success; Error code otherwise. + */ int dpni_get_qdid(struct fsl_mc_io *mc_io, uint32_t cmd_flags, uint16_t token, @@ -426,13 +844,16 @@ int dpni_get_qdid(struct fsl_mc_io *mc_io, uint16_t *qdid) { struct mc_command cmd = { 0 }; + struct dpni_cmd_get_qdid *cmd_params; + struct dpni_rsp_get_qdid *rsp_params; int err; /* prepare command */ cmd.header = mc_encode_cmd_header(DPNI_CMDID_GET_QDID, cmd_flags, token); - DPNI_CMD_GET_QDID(cmd, qtype); + cmd_params = (struct dpni_cmd_get_qdid *)cmd.params; + cmd_params->qtype = qtype; /* send command to mc*/ err = mc_send_command(mc_io, &cmd); @@ -440,34 +861,92 @@ int dpni_get_qdid(struct fsl_mc_io *mc_io, return err; /* retrieve response parameters */ - DPNI_RSP_GET_QDID(cmd, *qdid); + rsp_params = (struct dpni_rsp_get_qdid *)cmd.params; + *qdid = le16_to_cpu(rsp_params->qdid); return 0; } +/** + * dpni_get_tx_data_offset() - Get the Tx data offset (from start of buffer) + * @mc_io: Pointer to MC portal's I/O object + * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' + * @token: Token of DPNI object + * @data_offset: Tx data offset (from start of buffer) + * + * Return: '0' on Success; Error code otherwise. + */ +int dpni_get_tx_data_offset(struct fsl_mc_io *mc_io, + uint32_t cmd_flags, + uint16_t token, + uint16_t *data_offset) +{ + struct mc_command cmd = { 0 }; + struct dpni_rsp_get_tx_data_offset *rsp_params; + int err; + + /* prepare command */ + cmd.header = mc_encode_cmd_header(DPNI_CMDID_GET_TX_DATA_OFFSET, + cmd_flags, + token); + + /* send command to mc*/ + err = mc_send_command(mc_io, &cmd); + if (err) + return err; + + /* retrieve response parameters */ + rsp_params = (struct dpni_rsp_get_tx_data_offset *)cmd.params; + *data_offset = le16_to_cpu(rsp_params->data_offset); + + return 0; +} + +/** + * dpni_set_link_cfg() - set the link configuration. + * @mc_io: Pointer to MC portal's I/O object + * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' + * @token: Token of DPNI object + * @cfg: Link configuration + * + * Return: '0' on Success; Error code otherwise. + */ int dpni_set_link_cfg(struct fsl_mc_io *mc_io, uint32_t cmd_flags, uint16_t token, const struct dpni_link_cfg *cfg) { struct mc_command cmd = { 0 }; + struct dpni_cmd_set_link_cfg *cmd_params; /* prepare command */ cmd.header = mc_encode_cmd_header(DPNI_CMDID_SET_LINK_CFG, cmd_flags, token); - DPNI_CMD_SET_LINK_CFG(cmd, cfg); + cmd_params = (struct dpni_cmd_set_link_cfg *)cmd.params; + cmd_params->rate = cpu_to_le32(cfg->rate); + cmd_params->options = cpu_to_le64(cfg->options); /* send command to mc*/ return mc_send_command(mc_io, &cmd); } +/** + * dpni_get_link_state() - Return the link state (either up or down) + * @mc_io: Pointer to MC portal's I/O object + * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' + * @token: Token of DPNI object + * @state: Returned link state; + * + * Return: '0' on Success; Error code otherwise. + */ int dpni_get_link_state(struct fsl_mc_io *mc_io, uint32_t cmd_flags, uint16_t token, struct dpni_link_state *state) { struct mc_command cmd = { 0 }; + struct dpni_rsp_get_link_state *rsp_params; int err; /* prepare command */ @@ -481,34 +960,60 @@ int dpni_get_link_state(struct fsl_mc_io *mc_io, return err; /* retrieve response parameters */ - DPNI_RSP_GET_LINK_STATE(cmd, state); + rsp_params = (struct dpni_rsp_get_link_state *)cmd.params; + state->up = dpni_get_field(rsp_params->flags, LINK_STATE); + state->rate = le32_to_cpu(rsp_params->rate); + state->options = le64_to_cpu(rsp_params->options); return 0; } +/** + * dpni_set_max_frame_length() - Set the maximum received frame length. + * @mc_io: Pointer to MC portal's I/O object + * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' + * @token: Token of DPNI object + * @max_frame_length: Maximum received frame length (in bytes); + * frame is discarded if its length exceeds this value + * + * Return: '0' on Success; Error code otherwise. + */ int dpni_set_max_frame_length(struct fsl_mc_io *mc_io, uint32_t cmd_flags, uint16_t token, uint16_t max_frame_length) { struct mc_command cmd = { 0 }; + struct dpni_cmd_set_max_frame_length *cmd_params; /* prepare command */ cmd.header = mc_encode_cmd_header(DPNI_CMDID_SET_MAX_FRAME_LENGTH, cmd_flags, token); - DPNI_CMD_SET_MAX_FRAME_LENGTH(cmd, max_frame_length); + cmd_params = (struct dpni_cmd_set_max_frame_length *)cmd.params; + cmd_params->max_frame_length = cpu_to_le16(max_frame_length); /* send command to mc*/ return mc_send_command(mc_io, &cmd); } +/** + * dpni_get_max_frame_length() - Get the maximum received frame length. + * @mc_io: Pointer to MC portal's I/O object + * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' + * @token: Token of DPNI object + * @max_frame_length: Maximum received frame length (in bytes); + * frame is discarded if its length exceeds this value + * + * Return: '0' on Success; Error code otherwise. + */ int dpni_get_max_frame_length(struct fsl_mc_io *mc_io, uint32_t cmd_flags, uint16_t token, uint16_t *max_frame_length) { struct mc_command cmd = { 0 }; + struct dpni_rsp_get_max_frame_length *rsp_params; int err; /* prepare command */ @@ -522,34 +1027,56 @@ int dpni_get_max_frame_length(struct fsl_mc_io *mc_io, return err; /* retrieve response parameters */ - DPNI_RSP_GET_MAX_FRAME_LENGTH(cmd, *max_frame_length); + rsp_params = (struct dpni_rsp_get_max_frame_length *)cmd.params; + *max_frame_length = le16_to_cpu(rsp_params->max_frame_length); return 0; } +/** + * dpni_set_multicast_promisc() - Enable/disable multicast promiscuous mode + * @mc_io: Pointer to MC portal's I/O object + * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' + * @token: Token of DPNI object + * @en: Set to '1' to enable; '0' to disable + * + * Return: '0' on Success; Error code otherwise. + */ int dpni_set_multicast_promisc(struct fsl_mc_io *mc_io, uint32_t cmd_flags, uint16_t token, int en) { struct mc_command cmd = { 0 }; + struct dpni_cmd_set_multicast_promisc *cmd_params; /* prepare command */ cmd.header = mc_encode_cmd_header(DPNI_CMDID_SET_MCAST_PROMISC, cmd_flags, token); - DPNI_CMD_SET_MULTICAST_PROMISC(cmd, en); + cmd_params = (struct dpni_cmd_set_multicast_promisc *)cmd.params; + dpni_set_field(cmd_params->enable, ENABLE, en); /* send command to mc*/ return mc_send_command(mc_io, &cmd); } +/** + * dpni_get_multicast_promisc() - Get multicast promiscuous mode + * @mc_io: Pointer to MC portal's I/O object + * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' + * @token: Token of DPNI object + * @en: Returns '1' if enabled; '0' otherwise + * + * Return: '0' on Success; Error code otherwise. + */ int dpni_get_multicast_promisc(struct fsl_mc_io *mc_io, uint32_t cmd_flags, uint16_t token, int *en) { struct mc_command cmd = { 0 }; + struct dpni_rsp_get_multicast_promisc *rsp_params; int err; /* prepare command */ @@ -563,34 +1090,56 @@ int dpni_get_multicast_promisc(struct fsl_mc_io *mc_io, return err; /* retrieve response parameters */ - DPNI_RSP_GET_MULTICAST_PROMISC(cmd, *en); + rsp_params = (struct dpni_rsp_get_multicast_promisc *)cmd.params; + *en = dpni_get_field(rsp_params->enabled, ENABLE); return 0; } +/** + * dpni_set_unicast_promisc() - Enable/disable unicast promiscuous mode + * @mc_io: Pointer to MC portal's I/O object + * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' + * @token: Token of DPNI object + * @en: Set to '1' to enable; '0' to disable + * + * Return: '0' on Success; Error code otherwise. + */ int dpni_set_unicast_promisc(struct fsl_mc_io *mc_io, uint32_t cmd_flags, uint16_t token, int en) { struct mc_command cmd = { 0 }; + struct dpni_cmd_set_unicast_promisc *cmd_params; /* prepare command */ cmd.header = mc_encode_cmd_header(DPNI_CMDID_SET_UNICAST_PROMISC, cmd_flags, token); - DPNI_CMD_SET_UNICAST_PROMISC(cmd, en); + cmd_params = (struct dpni_cmd_set_unicast_promisc *)cmd.params; + dpni_set_field(cmd_params->enable, ENABLE, en); /* send command to mc*/ return mc_send_command(mc_io, &cmd); } +/** + * dpni_get_unicast_promisc() - Get unicast promiscuous mode + * @mc_io: Pointer to MC portal's I/O object + * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' + * @token: Token of DPNI object + * @en: Returns '1' if enabled; '0' otherwise + * + * Return: '0' on Success; Error code otherwise. + */ int dpni_get_unicast_promisc(struct fsl_mc_io *mc_io, uint32_t cmd_flags, uint16_t token, int *en) { struct mc_command cmd = { 0 }; + struct dpni_rsp_get_unicast_promisc *rsp_params; int err; /* prepare command */ @@ -604,35 +1153,59 @@ int dpni_get_unicast_promisc(struct fsl_mc_io *mc_io, return err; /* retrieve response parameters */ - DPNI_RSP_GET_UNICAST_PROMISC(cmd, *en); + rsp_params = (struct dpni_rsp_get_unicast_promisc *)cmd.params; + *en = dpni_get_field(rsp_params->enabled, ENABLE); return 0; } +/** + * dpni_set_primary_mac_addr() - Set the primary MAC address + * @mc_io: Pointer to MC portal's I/O object + * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' + * @token: Token of DPNI object + * @mac_addr: MAC address to set as primary address + * + * Return: '0' on Success; Error code otherwise. + */ int dpni_set_primary_mac_addr(struct fsl_mc_io *mc_io, uint32_t cmd_flags, uint16_t token, const uint8_t mac_addr[6]) { struct mc_command cmd = { 0 }; + struct dpni_cmd_set_primary_mac_addr *cmd_params; + int i; /* prepare command */ cmd.header = mc_encode_cmd_header(DPNI_CMDID_SET_PRIM_MAC, cmd_flags, token); - DPNI_CMD_SET_PRIMARY_MAC_ADDR(cmd, mac_addr); + cmd_params = (struct dpni_cmd_set_primary_mac_addr *)cmd.params; + for (i = 0; i < 6; i++) + cmd_params->mac_addr[i] = mac_addr[5 - i]; /* send command to mc*/ return mc_send_command(mc_io, &cmd); } +/** + * dpni_get_primary_mac_addr() - Get the primary MAC address + * @mc_io: Pointer to MC portal's I/O object + * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' + * @token: Token of DPNI object + * @mac_addr: Returned MAC address + * + * Return: '0' on Success; Error code otherwise. + */ int dpni_get_primary_mac_addr(struct fsl_mc_io *mc_io, uint32_t cmd_flags, uint16_t token, uint8_t mac_addr[6]) { struct mc_command cmd = { 0 }; - int err; + struct dpni_rsp_get_primary_mac_addr *rsp_params; + int i, err; /* prepare command */ cmd.header = mc_encode_cmd_header(DPNI_CMDID_GET_PRIM_MAC, @@ -645,45 +1218,85 @@ int dpni_get_primary_mac_addr(struct fsl_mc_io *mc_io, return err; /* retrieve response parameters */ - DPNI_RSP_GET_PRIMARY_MAC_ADDR(cmd, mac_addr); + rsp_params = (struct dpni_rsp_get_primary_mac_addr *)cmd.params; + for (i = 0; i < 6; i++) + mac_addr[5 - i] = rsp_params->mac_addr[i]; return 0; } +/** + * dpni_add_mac_addr() - Add MAC address filter + * @mc_io: Pointer to MC portal's I/O object + * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' + * @token: Token of DPNI object + * @mac_addr: MAC address to add + * + * Return: '0' on Success; Error code otherwise. + */ int dpni_add_mac_addr(struct fsl_mc_io *mc_io, uint32_t cmd_flags, uint16_t token, const uint8_t mac_addr[6]) { struct mc_command cmd = { 0 }; + struct dpni_cmd_add_mac_addr *cmd_params; + int i; /* prepare command */ cmd.header = mc_encode_cmd_header(DPNI_CMDID_ADD_MAC_ADDR, cmd_flags, token); - DPNI_CMD_ADD_MAC_ADDR(cmd, mac_addr); + cmd_params = (struct dpni_cmd_add_mac_addr *)cmd.params; + for (i = 0; i < 6; i++) + cmd_params->mac_addr[i] = mac_addr[5 - i]; /* send command to mc*/ return mc_send_command(mc_io, &cmd); } +/** + * dpni_remove_mac_addr() - Remove MAC address filter + * @mc_io: Pointer to MC portal's I/O object + * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' + * @token: Token of DPNI object + * @mac_addr: MAC address to remove + * + * Return: '0' on Success; Error code otherwise. + */ int dpni_remove_mac_addr(struct fsl_mc_io *mc_io, uint32_t cmd_flags, uint16_t token, const uint8_t mac_addr[6]) { struct mc_command cmd = { 0 }; + struct dpni_cmd_remove_mac_addr *cmd_params; + int i; /* prepare command */ cmd.header = mc_encode_cmd_header(DPNI_CMDID_REMOVE_MAC_ADDR, cmd_flags, token); - DPNI_CMD_REMOVE_MAC_ADDR(cmd, mac_addr); + cmd_params = (struct dpni_cmd_remove_mac_addr *)cmd.params; + for (i = 0; i < 6; i++) + cmd_params->mac_addr[i] = mac_addr[5 - i]; /* send command to mc*/ return mc_send_command(mc_io, &cmd); } +/** + * dpni_clear_mac_filters() - Clear all unicast and/or multicast MAC filters + * @mc_io: Pointer to MC portal's I/O object + * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' + * @token: Token of DPNI object + * @unicast: Set to '1' to clear unicast addresses + * @multicast: Set to '1' to clear multicast addresses + * + * The primary MAC address is not cleared by this operation. + * + * Return: '0' on Success; Error code otherwise. + */ int dpni_clear_mac_filters(struct fsl_mc_io *mc_io, uint32_t cmd_flags, uint16_t token, @@ -691,24 +1304,40 @@ int dpni_clear_mac_filters(struct fsl_mc_io *mc_io, int multicast) { struct mc_command cmd = { 0 }; + struct dpni_cmd_clear_mac_filters *cmd_params; /* prepare command */ cmd.header = mc_encode_cmd_header(DPNI_CMDID_CLR_MAC_FILTERS, cmd_flags, token); - DPNI_CMD_CLEAR_MAC_FILTERS(cmd, unicast, multicast); + cmd_params = (struct dpni_cmd_clear_mac_filters *)cmd.params; + dpni_set_field(cmd_params->flags, UNICAST_FILTERS, unicast); + dpni_set_field(cmd_params->flags, MULTICAST_FILTERS, multicast); /* send command to mc*/ return mc_send_command(mc_io, &cmd); } +/** + * dpni_get_port_mac_addr() - Retrieve MAC address associated to the physical + * port the DPNI is attached to + * @mc_io: Pointer to MC portal's I/O object + * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' + * @token: Token of DPNI object + * @mac_addr: MAC address of the physical port, if any, otherwise 0 + * + * The primary MAC address is not cleared by this operation. + * + * Return: '0' on Success; Error code otherwise. + */ int dpni_get_port_mac_addr(struct fsl_mc_io *mc_io, uint32_t cmd_flags, uint16_t token, uint8_t mac_addr[6]) { struct mc_command cmd = { 0 }; - int err; + struct dpni_rsp_get_port_mac_addr *rsp_params; + int i, err; /* prepare command */ cmd.header = mc_encode_cmd_header(DPNI_CMDID_GET_PORT_MAC_ADDR, @@ -721,62 +1350,105 @@ int dpni_get_port_mac_addr(struct fsl_mc_io *mc_io, return err; /* retrieve response parameters */ - DPNI_RSP_GET_PORT_MAC_ADDR(cmd, mac_addr); + rsp_params = (struct dpni_rsp_get_port_mac_addr *)cmd.params; + for (i = 0; i < 6; i++) + mac_addr[5 - i] = rsp_params->mac_addr[i]; return 0; } +/** + * dpni_enable_vlan_filter() - Enable/disable VLAN filtering mode + * @mc_io: Pointer to MC portal's I/O object + * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' + * @token: Token of DPNI object + * @en: Set to '1' to enable; '0' to disable + * + * Return: '0' on Success; Error code otherwise. + */ int dpni_enable_vlan_filter(struct fsl_mc_io *mc_io, uint32_t cmd_flags, - uint16_t token, - int en) + uint16_t token, + int en) { + struct dpni_cmd_enable_vlan_filter *cmd_params; struct mc_command cmd = { 0 }; /* prepare command */ cmd.header = mc_encode_cmd_header(DPNI_CMDID_ENABLE_VLAN_FILTER, cmd_flags, token); - DPNI_CMD_ENABLE_VLAN_FILTER(cmd, en); + cmd_params = (struct dpni_cmd_enable_vlan_filter *)cmd.params; + dpni_set_field(cmd_params->en, ENABLE, en); /* send command to mc*/ return mc_send_command(mc_io, &cmd); } +/** + * dpni_add_vlan_id() - Add VLAN ID filter + * @mc_io: Pointer to MC portal's I/O object + * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' + * @token: Token of DPNI object + * @vlan_id: VLAN ID to add + * + * Return: '0' on Success; Error code otherwise. + */ int dpni_add_vlan_id(struct fsl_mc_io *mc_io, uint32_t cmd_flags, uint16_t token, uint16_t vlan_id) { + struct dpni_cmd_vlan_id *cmd_params; struct mc_command cmd = { 0 }; /* prepare command */ cmd.header = mc_encode_cmd_header(DPNI_CMDID_ADD_VLAN_ID, cmd_flags, token); - DPNI_CMD_ADD_VLAN_ID(cmd, vlan_id); + cmd_params = (struct dpni_cmd_vlan_id *)cmd.params; + cmd_params->vlan_id = cpu_to_le16(vlan_id); /* send command to mc*/ return mc_send_command(mc_io, &cmd); } +/** + * dpni_remove_vlan_id() - Remove VLAN ID filter + * @mc_io: Pointer to MC portal's I/O object + * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' + * @token: Token of DPNI object + * @vlan_id: VLAN ID to remove + * + * Return: '0' on Success; Error code otherwise. + */ int dpni_remove_vlan_id(struct fsl_mc_io *mc_io, uint32_t cmd_flags, uint16_t token, uint16_t vlan_id) { + struct dpni_cmd_vlan_id *cmd_params; struct mc_command cmd = { 0 }; /* prepare command */ cmd.header = mc_encode_cmd_header(DPNI_CMDID_REMOVE_VLAN_ID, cmd_flags, token); - DPNI_CMD_REMOVE_VLAN_ID(cmd, vlan_id); + cmd_params = (struct dpni_cmd_vlan_id *)cmd.params; + cmd_params->vlan_id = cpu_to_le16(vlan_id); /* send command to mc*/ return mc_send_command(mc_io, &cmd); } +/** + * dpni_clear_vlan_filters() - Clear all VLAN filters + * @mc_io: Pointer to MC portal's I/O object + * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' + * @token: Token of DPNI object + * + * Return: '0' on Success; Error code otherwise. + */ int dpni_clear_vlan_filters(struct fsl_mc_io *mc_io, uint32_t cmd_flags, uint16_t token) @@ -792,6 +1464,19 @@ int dpni_clear_vlan_filters(struct fsl_mc_io *mc_io, return mc_send_command(mc_io, &cmd); } +/** + * dpni_set_rx_tc_dist() - Set Rx traffic class distribution configuration + * @mc_io: Pointer to MC portal's I/O object + * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' + * @token: Token of DPNI object + * @tc_id: Traffic class selection (0-7) + * @cfg: Traffic class distribution configuration + * + * warning: if 'dist_mode != DPNI_DIST_MODE_NONE', call dpkg_prepare_key_cfg() + * first to prepare the key_cfg_iova parameter + * + * Return: '0' on Success; error code otherwise. + */ int dpni_set_rx_tc_dist(struct fsl_mc_io *mc_io, uint32_t cmd_flags, uint16_t token, @@ -799,87 +1484,185 @@ int dpni_set_rx_tc_dist(struct fsl_mc_io *mc_io, const struct dpni_rx_tc_dist_cfg *cfg) { struct mc_command cmd = { 0 }; + struct dpni_cmd_set_rx_tc_dist *cmd_params; /* prepare command */ cmd.header = mc_encode_cmd_header(DPNI_CMDID_SET_RX_TC_DIST, cmd_flags, token); - DPNI_CMD_SET_RX_TC_DIST(cmd, tc_id, cfg); + cmd_params = (struct dpni_cmd_set_rx_tc_dist *)cmd.params; + cmd_params->dist_size = cpu_to_le16(cfg->dist_size); + cmd_params->tc_id = tc_id; + cmd_params->default_flow_id = cpu_to_le16(cfg->fs_cfg.default_flow_id); + cmd_params->key_cfg_iova = cpu_to_le64(cfg->key_cfg_iova); + dpni_set_field(cmd_params->flags, + DIST_MODE, + cfg->dist_mode); + dpni_set_field(cmd_params->flags, + MISS_ACTION, + cfg->fs_cfg.miss_action); + dpni_set_field(cmd_params->keep_hash_key, + KEEP_HASH_KEY, + cfg->fs_cfg.keep_hash_key); /* send command to mc*/ return mc_send_command(mc_io, &cmd); } -int dpni_set_tx_confirmation_mode(struct fsl_mc_io *mc_io, - uint32_t cmd_flags, - uint16_t token, - enum dpni_confirmation_mode mode) +/** + * dpni_set_tx_confirmation_mode() - Tx confirmation mode + * @mc_io: Pointer to MC portal's I/O object + * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' + * @token: Token of DPNI object + * @mode: Tx confirmation mode + * + * This function is useful only when 'DPNI_OPT_TX_CONF_DISABLED' is not + * selected at DPNI creation. + * Calling this function with 'mode' set to DPNI_CONF_DISABLE disables all + * transmit confirmation (including the private confirmation queues), regardless + * of previous settings; Note that in this case, Tx error frames are still + * enqueued to the general transmit errors queue. + * Calling this function with 'mode' set to DPNI_CONF_SINGLE switches all + * Tx confirmations to a shared Tx conf queue. 'index' field in dpni_get_queue + * command will be ignored. + * + * Return: '0' on Success; Error code otherwise. + */ +int dpni_set_tx_confirmation_mode(struct fsl_mc_io *mc_io, + uint32_t cmd_flags, + uint16_t token, + enum dpni_confirmation_mode mode) { + struct dpni_tx_confirmation_mode *cmd_params; struct mc_command cmd = { 0 }; /* prepare command */ cmd.header = mc_encode_cmd_header(DPNI_CMDID_SET_TX_CONFIRMATION_MODE, cmd_flags, token); - DPNI_CMD_SET_TX_CONFIRMATION_MODE(cmd, mode); + cmd_params = (struct dpni_tx_confirmation_mode *)cmd.params; + cmd_params->confirmation_mode = mode; /* send command to mc*/ return mc_send_command(mc_io, &cmd); } -int dpni_set_congestion_notification( - struct fsl_mc_io *mc_io, - uint32_t cmd_flags, - uint16_t token, - enum dpni_queue_type qtype, - uint8_t tc_id, +/** + * dpni_set_congestion_notification() - Set traffic class congestion + * notification configuration + * @mc_io: Pointer to MC portal's I/O object + * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' + * @token: Token of DPNI object + * @qtype: Type of queue - Rx, Tx and Tx confirm types are supported + * @tc_id: Traffic class selection (0-7) + * @cfg: congestion notification configuration + * + * Return: '0' on Success; error code otherwise. + */ +int dpni_set_congestion_notification(struct fsl_mc_io *mc_io, + uint32_t cmd_flags, + uint16_t token, + enum dpni_queue_type qtype, + uint8_t tc_id, const struct dpni_congestion_notification_cfg *cfg) { + struct dpni_cmd_set_congestion_notification *cmd_params; struct mc_command cmd = { 0 }; /* prepare command */ cmd.header = mc_encode_cmd_header( - DPNI_CMDID_SET_CONGESTION_NOTIFICATION, - cmd_flags, - token); - DPNI_CMD_SET_CONGESTION_NOTIFICATION(cmd, qtype, tc_id, cfg); + DPNI_CMDID_SET_CONGESTION_NOTIFICATION, + cmd_flags, + token); + cmd_params = (struct dpni_cmd_set_congestion_notification *)cmd.params; + cmd_params->qtype = qtype; + cmd_params->tc = tc_id; + cmd_params->dest_id = cpu_to_le32(cfg->dest_cfg.dest_id); + cmd_params->notification_mode = cpu_to_le16(cfg->notification_mode); + cmd_params->dest_priority = cfg->dest_cfg.priority; + cmd_params->message_iova = cpu_to_le64(cfg->message_iova); + cmd_params->message_ctx = cpu_to_le64(cfg->message_ctx); + cmd_params->threshold_entry = cpu_to_le32(cfg->threshold_entry); + cmd_params->threshold_exit = cpu_to_le32(cfg->threshold_exit); + dpni_set_field(cmd_params->type_units, + DEST_TYPE, + cfg->dest_cfg.dest_type); + dpni_set_field(cmd_params->type_units, + CONG_UNITS, + cfg->units); /* send command to mc*/ return mc_send_command(mc_io, &cmd); } -int dpni_get_congestion_notification(struct fsl_mc_io *mc_io, - uint32_t cmd_flags, - uint16_t token, +/** + * dpni_get_congestion_notification() - Get traffic class congestion + * notification configuration + * @mc_io: Pointer to MC portal's I/O object + * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' + * @token: Token of DPNI object + * @qtype: Type of queue - Rx, Tx and Tx confirm types are supported + * @tc_id: Traffic class selection (0-7) + * @cfg: congestion notification configuration + * + * Return: '0' on Success; error code otherwise. + */ +int dpni_get_congestion_notification(struct fsl_mc_io *mc_io, + uint32_t cmd_flags, + uint16_t token, enum dpni_queue_type qtype, - uint8_t tc_id, + uint8_t tc_id, struct dpni_congestion_notification_cfg *cfg) { + struct dpni_rsp_get_congestion_notification *rsp_params; + struct dpni_cmd_get_congestion_notification *cmd_params; struct mc_command cmd = { 0 }; int err; /* prepare command */ cmd.header = mc_encode_cmd_header( - DPNI_CMDID_GET_CONGESTION_NOTIFICATION, - cmd_flags, - token); - DPNI_CMD_GET_CONGESTION_NOTIFICATION(cmd, qtype, tc_id); + DPNI_CMDID_GET_CONGESTION_NOTIFICATION, + cmd_flags, + token); + cmd_params = (struct dpni_cmd_get_congestion_notification *)cmd.params; + cmd_params->qtype = qtype; + cmd_params->tc = tc_id; /* send command to mc*/ err = mc_send_command(mc_io, &cmd); if (err) return err; - DPNI_RSP_GET_CONGESTION_NOTIFICATION(cmd, cfg); + rsp_params = (struct dpni_rsp_get_congestion_notification *)cmd.params; + cfg->units = dpni_get_field(rsp_params->type_units, CONG_UNITS); + cfg->threshold_entry = le32_to_cpu(rsp_params->threshold_entry); + cfg->threshold_exit = le32_to_cpu(rsp_params->threshold_exit); + cfg->message_ctx = le64_to_cpu(rsp_params->message_ctx); + cfg->message_iova = le64_to_cpu(rsp_params->message_iova); + cfg->notification_mode = le16_to_cpu(rsp_params->notification_mode); + cfg->dest_cfg.dest_id = le32_to_cpu(rsp_params->dest_id); + cfg->dest_cfg.priority = rsp_params->dest_priority; + cfg->dest_cfg.dest_type = dpni_get_field(rsp_params->type_units, + DEST_TYPE); return 0; } +/** + * dpni_get_api_version() - Get Data Path Network Interface 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 data path network interface API + * @minor_ver: Minor version of data path network interface API + * + * Return: '0' on Success; Error code otherwise. + */ int dpni_get_api_version(struct fsl_mc_io *mc_io, uint32_t cmd_flags, - uint16_t *major_ver, - uint16_t *minor_ver) + uint16_t *major_ver, + uint16_t *minor_ver) { + struct dpni_rsp_get_api_version *rsp_params; struct mc_command cmd = { 0 }; int err; @@ -891,87 +1674,177 @@ int dpni_get_api_version(struct fsl_mc_io *mc_io, if (err) return err; - DPNI_RSP_GET_API_VERSION(cmd, *major_ver, *minor_ver); + rsp_params = (struct dpni_rsp_get_api_version *)cmd.params; + *major_ver = le16_to_cpu(rsp_params->major); + *minor_ver = le16_to_cpu(rsp_params->minor); return 0; } +/** + * dpni_set_queue() - Set queue parameters + * @mc_io: Pointer to MC portal's I/O object + * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' + * @token: Token of DPNI object + * @qtype: Type of queue - all queue types are supported, although + * the command is ignored for Tx + * @tc: Traffic class, in range 0 to NUM_TCS - 1 + * @index: Selects the specific queue out of the set allocated for the + * same TC. Value must be in range 0 to NUM_QUEUES - 1 + * @options: A combination of DPNI_QUEUE_OPT_ values that control what + * configuration options are set on the queue + * @queue: Queue structure + * + * Return: '0' on Success; Error code otherwise. + */ int dpni_set_queue(struct fsl_mc_io *mc_io, uint32_t cmd_flags, - uint16_t token, + uint16_t token, enum dpni_queue_type qtype, - uint8_t tc, - uint8_t index, + uint8_t tc, + uint8_t index, uint8_t options, - const struct dpni_queue *queue) + const struct dpni_queue *queue) { struct mc_command cmd = { 0 }; + struct dpni_cmd_set_queue *cmd_params; /* prepare command */ cmd.header = mc_encode_cmd_header(DPNI_CMDID_SET_QUEUE, cmd_flags, token); - DPNI_CMD_SET_QUEUE(cmd, qtype, tc, index, options, queue); - - /* send command to mc*/ + cmd_params = (struct dpni_cmd_set_queue *)cmd.params; + cmd_params->qtype = qtype; + cmd_params->tc = tc; + cmd_params->index = index; + cmd_params->options = options; + cmd_params->dest_id = cpu_to_le32(queue->destination.id); + cmd_params->dest_prio = queue->destination.priority; + dpni_set_field(cmd_params->flags, DEST_TYPE, queue->destination.type); + dpni_set_field(cmd_params->flags, STASH_CTRL, queue->flc.stash_control); + dpni_set_field(cmd_params->flags, HOLD_ACTIVE, + queue->destination.hold_active); + cmd_params->flc = cpu_to_le64(queue->flc.value); + cmd_params->user_context = cpu_to_le64(queue->user_context); + + /* send command to mc */ return mc_send_command(mc_io, &cmd); } +/** + * dpni_get_queue() - Get queue parameters + * @mc_io: Pointer to MC portal's I/O object + * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' + * @token: Token of DPNI object + * @qtype: Type of queue - all queue types are supported + * @tc: Traffic class, in range 0 to NUM_TCS - 1 + * @index: Selects the specific queue out of the set allocated for the + * same TC. Value must be in range 0 to NUM_QUEUES - 1 + * @queue: Queue configuration structure + * @qid: Queue identification + * + * Return: '0' on Success; Error code otherwise. + */ int dpni_get_queue(struct fsl_mc_io *mc_io, uint32_t cmd_flags, - uint16_t token, + uint16_t token, enum dpni_queue_type qtype, - uint8_t tc, - uint8_t index, + uint8_t tc, + uint8_t index, struct dpni_queue *queue, struct dpni_queue_id *qid) { struct mc_command cmd = { 0 }; + struct dpni_cmd_get_queue *cmd_params; + struct dpni_rsp_get_queue *rsp_params; int err; /* prepare command */ cmd.header = mc_encode_cmd_header(DPNI_CMDID_GET_QUEUE, cmd_flags, token); - DPNI_CMD_GET_QUEUE(cmd, qtype, tc, index); + cmd_params = (struct dpni_cmd_get_queue *)cmd.params; + cmd_params->qtype = qtype; + cmd_params->tc = tc; + cmd_params->index = index; - /* send command to mc*/ + /* send command to mc */ err = mc_send_command(mc_io, &cmd); if (err) return err; /* retrieve response parameters */ - DPNI_RSP_GET_QUEUE(cmd, queue, qid); + rsp_params = (struct dpni_rsp_get_queue *)cmd.params; + queue->destination.id = le32_to_cpu(rsp_params->dest_id); + queue->destination.priority = rsp_params->dest_prio; + queue->destination.type = dpni_get_field(rsp_params->flags, + DEST_TYPE); + queue->flc.stash_control = dpni_get_field(rsp_params->flags, + STASH_CTRL); + queue->destination.hold_active = dpni_get_field(rsp_params->flags, + HOLD_ACTIVE); + queue->flc.value = le64_to_cpu(rsp_params->flc); + queue->user_context = le64_to_cpu(rsp_params->user_context); + qid->fqid = le32_to_cpu(rsp_params->fqid); + qid->qdbin = le16_to_cpu(rsp_params->qdbin); return 0; } +/** + * dpni_get_statistics() - Get DPNI statistics + * @mc_io: Pointer to MC portal's I/O object + * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' + * @token: Token of DPNI object + * @page: Selects the statistics page to retrieve, see + * DPNI_GET_STATISTICS output. Pages are numbered 0 to 2. + * @param: Custom parameter for some pages used to select + * a certain statistic source, for example the TC. + * @stat: Structure containing the statistics + * + * Return: '0' on Success; Error code otherwise. + */ int dpni_get_statistics(struct fsl_mc_io *mc_io, uint32_t cmd_flags, uint16_t token, uint8_t page, + uint8_t param, union dpni_statistics *stat) { struct mc_command cmd = { 0 }; - int err; + struct dpni_cmd_get_statistics *cmd_params; + struct dpni_rsp_get_statistics *rsp_params; + int i, err; /* prepare command */ cmd.header = mc_encode_cmd_header(DPNI_CMDID_GET_STATISTICS, cmd_flags, token); - DPNI_CMD_GET_STATISTICS(cmd, page); + cmd_params = (struct dpni_cmd_get_statistics *)cmd.params; + cmd_params->page_number = page; + cmd_params->param = param; - /* send command to mc*/ + /* send command to mc */ err = mc_send_command(mc_io, &cmd); if (err) return err; /* retrieve response parameters */ - DPNI_RSP_GET_STATISTICS(cmd, stat); + rsp_params = (struct dpni_rsp_get_statistics *)cmd.params; + for (i = 0; i < DPNI_STATISTICS_CNT; i++) + stat->raw.counter[i] = le64_to_cpu(rsp_params->counter[i]); return 0; } +/** + * dpni_reset_statistics() - Clears DPNI statistics + * @mc_io: Pointer to MC portal's I/O object + * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' + * @token: Token of DPNI object + * + * Return: '0' on Success; Error code otherwise. + */ int dpni_reset_statistics(struct fsl_mc_io *mc_io, uint32_t cmd_flags, uint16_t token) @@ -987,52 +1860,117 @@ int dpni_reset_statistics(struct fsl_mc_io *mc_io, return mc_send_command(mc_io, &cmd); } +/** + * dpni_set_taildrop() - Set taildrop per queue or TC + * + * Setting a per-TC taildrop (cg_point = DPNI_CP_GROUP) will reset any current + * congestion notification or early drop (WRED) configuration previously applied + * to the same TC. + * + * @mc_io: Pointer to MC portal's I/O object + * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' + * @token: Token of DPNI object + * @cg_point: Congestion point, DPNI_CP_QUEUE is only supported in + * combination with DPNI_QUEUE_RX. + * @q_type: Queue type, can be DPNI_QUEUE_RX or DPNI_QUEUE_TX. + * @tc: Traffic class to apply this taildrop to + * @q_index: Index of the queue if the DPNI supports multiple queues for + * traffic distribution. + * Ignored if CONGESTION_POINT is not DPNI_CP_QUEUE. + * @taildrop: Taildrop structure + * + * Return: '0' on Success; Error code otherwise. + */ int dpni_set_taildrop(struct fsl_mc_io *mc_io, uint32_t cmd_flags, uint16_t token, enum dpni_congestion_point cg_point, - enum dpni_queue_type q_type, + enum dpni_queue_type qtype, uint8_t tc, - uint8_t q_index, + uint8_t index, struct dpni_taildrop *taildrop) { struct mc_command cmd = { 0 }; + struct dpni_cmd_set_taildrop *cmd_params; /* prepare command */ cmd.header = mc_encode_cmd_header(DPNI_CMDID_SET_TAILDROP, cmd_flags, token); - DPNI_CMD_SET_TAILDROP(cmd, cg_point, q_type, tc, q_index, taildrop); - - /* send command to mc*/ + cmd_params = (struct dpni_cmd_set_taildrop *)cmd.params; + cmd_params->congestion_point = cg_point; + cmd_params->qtype = qtype; + cmd_params->tc = tc; + cmd_params->index = index; + cmd_params->units = taildrop->units; + cmd_params->threshold = cpu_to_le32(taildrop->threshold); + dpni_set_field(cmd_params->enable_oal_lo, ENABLE, taildrop->enable); + dpni_set_field(cmd_params->enable_oal_lo, OAL_LO, taildrop->oal); + dpni_set_field(cmd_params->oal_hi, + OAL_HI, + taildrop->oal >> DPNI_OAL_LO_SIZE); + + /* send command to mc */ return mc_send_command(mc_io, &cmd); } +/** + * dpni_get_taildrop() - Get taildrop information + * @mc_io: Pointer to MC portal's I/O object + * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' + * @token: Token of DPNI object + * @cg_point: Congestion point + * @q_type: Queue type on which the taildrop is configured. + * Only Rx queues are supported for now + * @tc: Traffic class to apply this taildrop to + * @q_index: Index of the queue if the DPNI supports multiple queues for + * traffic distribution. Ignored if CONGESTION_POINT is not 0. + * @taildrop: Taildrop structure + * + * Return: '0' on Success; Error code otherwise. + */ int dpni_get_taildrop(struct fsl_mc_io *mc_io, uint32_t cmd_flags, - uint16_t token, - enum dpni_congestion_point cg_point, - enum dpni_queue_type q_type, - uint8_t tc, - uint8_t q_index, - struct dpni_taildrop *taildrop) + uint16_t token, + enum dpni_congestion_point cg_point, + enum dpni_queue_type qtype, + uint8_t tc, + uint8_t index, + struct dpni_taildrop *taildrop) { struct mc_command cmd = { 0 }; + struct dpni_cmd_get_taildrop *cmd_params; + struct dpni_rsp_get_taildrop *rsp_params; + uint8_t oal_lo, oal_hi; int err; /* prepare command */ cmd.header = mc_encode_cmd_header(DPNI_CMDID_GET_TAILDROP, cmd_flags, token); - DPNI_CMD_GET_TAILDROP(cmd, cg_point, q_type, tc, q_index); + cmd_params = (struct dpni_cmd_get_taildrop *)cmd.params; + cmd_params->congestion_point = cg_point; + cmd_params->qtype = qtype; + cmd_params->tc = tc; + cmd_params->index = index; - /* send command to mc*/ + /* send command to mc */ err = mc_send_command(mc_io, &cmd); if (err) return err; /* retrieve response parameters */ - DPNI_RSP_GET_TAILDROP(cmd, taildrop); + rsp_params = (struct dpni_rsp_get_taildrop *)cmd.params; + taildrop->enable = dpni_get_field(rsp_params->enable_oal_lo, ENABLE); + taildrop->units = rsp_params->units; + taildrop->threshold = le32_to_cpu(rsp_params->threshold); + oal_lo = dpni_get_field(rsp_params->enable_oal_lo, OAL_LO); + oal_hi = dpni_get_field(rsp_params->oal_hi, OAL_HI); + taildrop->oal = oal_hi << DPNI_OAL_LO_SIZE | oal_lo; + + /* Fill the first 4 bits, 'oal' is a 2's complement value of 12 bits */ + if (taildrop->oal >= 0x0800) + taildrop->oal |= 0xF000; return 0; } |