path: root/drivers/net/qede/base/ecore_dcbx.c

/*
 * Copyright (c) 2016 QLogic Corporation.
 * All rights reserved.
 * www.qlogic.com
 *
 * See LICENSE.qede_pmd for copyright and licensing details.
 */

#include "bcm_osal.h"
#include "ecore.h"
#include "ecore_sp_commands.h"
#include "ecore_dcbx.h"
#include "ecore_cxt.h"
#include "ecore_gtt_reg_addr.h"
#include "ecore_iro.h"

#define ECORE_DCBX_MAX_MIB_READ_TRY	(100)
#define ECORE_MAX_PFC_PRIORITIES	8
#define ECORE_ETH_TYPE_DEFAULT		(0)

#define ECORE_DCBX_INVALID_PRIORITY	0xFF

/* Get Traffic Class from priority traffic class table, 4 bits represent
 * the traffic class corresponding to the priority.
 */
#define ECORE_DCBX_PRIO2TC(prio_tc_tbl, prio) \
		((u32)(pri_tc_tbl >> ((7 - prio) * 4)) & 0x7)

static bool ecore_dcbx_app_ethtype(u32 app_info_bitmap)
{
	return (ECORE_MFW_GET_FIELD(app_info_bitmap, DCBX_APP_SF) ==
		DCBX_APP_SF_ETHTYPE) ? true : false;
}

static bool ecore_dcbx_app_port(u32 app_info_bitmap)
{
	return (ECORE_MFW_GET_FIELD(app_info_bitmap, DCBX_APP_SF) ==
		DCBX_APP_SF_PORT) ? true : false;
}

static bool ecore_dcbx_default_tlv(u32 app_info_bitmap, u16 proto_id)
{
	return (ecore_dcbx_app_ethtype(app_info_bitmap) &&
		proto_id == ECORE_ETH_TYPE_DEFAULT) ? true : false;
}

static bool ecore_dcbx_enabled(u32 dcbx_cfg_bitmap)
{
	return (ECORE_MFW_GET_FIELD(dcbx_cfg_bitmap, DCBX_CONFIG_VERSION) ==
		DCBX_CONFIG_VERSION_DISABLED) ? false : true;
}

static bool ecore_dcbx_cee(u32 dcbx_cfg_bitmap)
{
	return (ECORE_MFW_GET_FIELD(dcbx_cfg_bitmap, DCBX_CONFIG_VERSION) ==
		DCBX_CONFIG_VERSION_CEE) ? true : false;
}

static bool ecore_dcbx_ieee(u32 dcbx_cfg_bitmap)
{
	return (ECORE_MFW_GET_FIELD(dcbx_cfg_bitmap, DCBX_CONFIG_VERSION) ==
		DCBX_CONFIG_VERSION_IEEE) ? true : false;
}

/* @@@TBD A0 Eagle workaround */
void ecore_dcbx_eagle_workaround(struct ecore_hwfn *p_hwfn,
				 struct ecore_ptt *p_ptt, bool set_to_pfc)
{
	if (!ENABLE_EAGLE_ENG1_WORKAROUND(p_hwfn))
		return;

	ecore_wr(p_hwfn, p_ptt,
		 YSEM_REG_FAST_MEMORY + 0x20000 /* RAM in FASTMEM */  +
		 YSTORM_FLOW_CONTROL_MODE_OFFSET,
		 set_to_pfc ? flow_ctrl_pfc : flow_ctrl_pause);
	ecore_wr(p_hwfn, p_ptt, NIG_REG_FLOWCTRL_MODE,
		 EAGLE_ENG1_WORKAROUND_NIG_FLOWCTRL_MODE);
}

static void
ecore_dcbx_dp_protocol(struct ecore_hwfn *p_hwfn,
		       struct ecore_dcbx_results *p_data)
{
	struct ecore_hw_info *p_info = &p_hwfn->hw_info;
	enum dcbx_protocol_type id;
	bool enable, update;
	u8 prio, tc, size;
	const char *name;	/* @DPDK */
	int i;

	size = OSAL_ARRAY_SIZE(ecore_dcbx_app_update);

	DP_INFO(p_hwfn, "DCBX negotiated: %d\n", p_data->dcbx_enabled);

	for (i = 0; i < size; i++) {
		id = ecore_dcbx_app_update[i].id;
		name = ecore_dcbx_app_update[i].name;

		enable = p_data->arr[id].enable;
		update = p_data->arr[id].update;
		tc = p_data->arr[id].tc;
		prio = p_data->arr[id].priority;

		DP_INFO(p_hwfn,
			"%s info: update %d, enable %d, prio %d, tc %d, num_tc %d\n",
			name, update, enable, prio, tc, p_info->num_tc);
	}
}

static void
ecore_dcbx_set_pf_tcs(struct ecore_hw_info *p_info,
		      u8 tc, enum ecore_pci_personality personality)
{
	/* QM reconf data */
	if (p_info->personality == personality) {
		if (personality == ECORE_PCI_ETH)
			p_info->non_offload_tc = tc;
		else
			p_info->offload_tc = tc;
	}
}

void
ecore_dcbx_set_params(struct ecore_dcbx_results *p_data,
		      struct ecore_hw_info *p_info,
		      bool enable, bool update, u8 prio, u8 tc,
		      enum dcbx_protocol_type type,
		      enum ecore_pci_personality personality)
{
	/* PF update ramrod data */
	p_data->arr[type].update = update;
	p_data->arr[type].enable = enable;
	p_data->arr[type].priority = prio;
	p_data->arr[type].tc = tc;

	ecore_dcbx_set_pf_tcs(p_info, tc, personality);
}

/* Update app protocol data and hw_info fields with the TLV info */
static void
ecore_dcbx_update_app_info(struct ecore_dcbx_results *p_data,
			   struct ecore_hwfn *p_hwfn,
			   bool enable, bool update, u8 prio, u8 tc,
			   enum dcbx_protocol_type type)
{
	struct ecore_hw_info *p_info = &p_hwfn->hw_info;
	enum ecore_pci_personality personality;
	enum dcbx_protocol_type id;
	const char *name;	/* @DPDK */
	u8 size;
	int i;

	size = OSAL_ARRAY_SIZE(ecore_dcbx_app_update);

	for (i = 0; i < size; i++) {
		id = ecore_dcbx_app_update[i].id;

		if (type != id)
			continue;

		personality = ecore_dcbx_app_update[i].personality;
		name = ecore_dcbx_app_update[i].name;

		ecore_dcbx_set_params(p_data, p_info, enable, update,
				      prio, tc, type, personality);
	}
}

static enum _ecore_status_t
ecore_dcbx_get_app_priority(u8 pri_bitmap, u8 *priority)
{
	u32 pri_mask, pri = ECORE_MAX_PFC_PRIORITIES;
	u32 index = ECORE_MAX_PFC_PRIORITIES - 1;
	enum _ecore_status_t rc = ECORE_SUCCESS;

	/* Bitmap 1 corresponds to priority 0, return priority 0 */
	if (pri_bitmap == 1) {
		*priority = 0;
		return rc;
	}

	/* Choose the highest priority */
	while ((pri == ECORE_MAX_PFC_PRIORITIES) && index) {
		pri_mask = 1 << index;
		if (pri_bitmap & pri_mask)
			pri = index;
		index--;
	}

	if (pri < ECORE_MAX_PFC_PRIORITIES)
		*priority = (u8)pri;
	else
		rc = ECORE_INVAL;

	return rc;
}

static bool
ecore_dcbx_get_app_protocol_type(struct ecore_hwfn *p_hwfn,
				 u32 app_prio_bitmap, u16 id, int *type)
{
	bool status = false;

	if (ecore_dcbx_default_tlv(app_prio_bitmap, id)) {
		*type = DCBX_PROTOCOL_ETH;
		status = true;
	} else {
		DP_ERR(p_hwfn, "Unsupported protocol %d\n", id);
	}

	return status;
}

/*  Parse app TLV's to update TC information in hw_info structure for
 * reconfiguring QM. Get protocol specific data for PF update ramrod command.
 */
static enum _ecore_status_t
ecore_dcbx_process_tlv(struct ecore_hwfn *p_hwfn,
		       struct ecore_dcbx_results *p_data,
		       struct dcbx_app_priority_entry *p_tbl, u32 pri_tc_tbl,
		       int count, bool dcbx_enabled)
{
	enum _ecore_status_t rc = ECORE_SUCCESS;
	u8 tc, priority, priority_map;
	int i, type = -1;
	u16 protocol_id;
	bool enable;

	DP_VERBOSE(p_hwfn, ECORE_MSG_DCB, "Num APP entries = %d\n", count);

	/* Parse APP TLV */
	for (i = 0; i < count; i++) {
		protocol_id = ECORE_MFW_GET_FIELD(p_tbl[i].entry,
						  DCBX_APP_PROTOCOL_ID);
		priority_map = ECORE_MFW_GET_FIELD(p_tbl[i].entry,
						   DCBX_APP_PRI_MAP);
		rc = ecore_dcbx_get_app_priority(priority_map, &priority);
		if (rc == ECORE_INVAL) {
			DP_ERR(p_hwfn, "Invalid priority\n");
			return rc;
		}

		tc = ECORE_DCBX_PRIO2TC(pri_tc_tbl, priority);
		if (ecore_dcbx_get_app_protocol_type(p_hwfn, p_tbl[i].entry,
						     protocol_id, &type)) {
			/* ETH always have the enable bit reset, as it gets
			 * vlan information per packet. For other protocols,
			 * should be set according to the dcbx_enabled
			 * indication, but we only got here if there was an
			 * app tlv for the protocol, so dcbx must be enabled.
			 */
			enable = (type == DCBX_PROTOCOL_ETH ? false : true);

			ecore_dcbx_update_app_info(p_data, p_hwfn, enable, true,
						   priority, tc, type);
		}
	}
	/* Update ramrod protocol data and hw_info fields
	 * with default info when corresponding APP TLV's are not detected.
	 * The enabled field has a different logic for ethernet as only for
	 * ethernet dcb should disabled by default, as the information arrives
	 * from the OS (unless an explicit app tlv was present).
	 */
	tc = p_data->arr[DCBX_PROTOCOL_ETH].tc;
	priority = p_data->arr[DCBX_PROTOCOL_ETH].priority;
	for (type = 0; type < DCBX_MAX_PROTOCOL_TYPE; type++) {
		if (p_data->arr[type].update)
			continue;

		enable = (type == DCBX_PROTOCOL_ETH) ? false : dcbx_enabled;
		ecore_dcbx_update_app_info(p_data, p_hwfn, enable, true,
					   priority, tc, type);
	}

	return ECORE_SUCCESS;
}

/* Parse app TLV's to update TC information in hw_info structure for
 * reconfiguring QM. Get protocol specific data for PF update ramrod command.
 */
static enum _ecore_status_t
ecore_dcbx_process_mib_info(struct ecore_hwfn *p_hwfn)
{
	struct dcbx_app_priority_feature *p_app;
	enum _ecore_status_t rc = ECORE_SUCCESS;
	struct ecore_dcbx_results data = { 0 };
	struct dcbx_app_priority_entry *p_tbl;
	struct dcbx_ets_feature *p_ets;
	struct ecore_hw_info *p_info;
	u32 pri_tc_tbl, flags;
	bool dcbx_enabled;
	int num_entries;

	/* If DCBx version is non zero, then negotiation was
	 * successfuly performed
	 */
	flags = p_hwfn->p_dcbx_info->operational.flags;
	dcbx_enabled = ECORE_MFW_GET_FIELD(flags, DCBX_CONFIG_VERSION) != 0;

	p_app = &p_hwfn->p_dcbx_info->operational.features.app;
	p_tbl = p_app->app_pri_tbl;

	p_ets = &p_hwfn->p_dcbx_info->operational.features.ets;
	pri_tc_tbl = p_ets->pri_tc_tbl[0];

	p_info = &p_hwfn->hw_info;
	num_entries = ECORE_MFW_GET_FIELD(p_app->flags, DCBX_APP_NUM_ENTRIES);

	rc = ecore_dcbx_process_tlv(p_hwfn, &data, p_tbl, pri_tc_tbl,
				    num_entries, dcbx_enabled);
	if (rc != ECORE_SUCCESS)
		return rc;

	p_info->num_tc = ECORE_MFW_GET_FIELD(p_ets->flags, DCBX_ETS_MAX_TCS);
	data.pf_id = p_hwfn->rel_pf_id;
	data.dcbx_enabled = dcbx_enabled;

	ecore_dcbx_dp_protocol(p_hwfn, &data);

	OSAL_MEMCPY(&p_hwfn->p_dcbx_info->results, &data,
		    sizeof(struct ecore_dcbx_results));

	return ECORE_SUCCESS;
}

static enum _ecore_status_t
ecore_dcbx_copy_mib(struct ecore_hwfn *p_hwfn,
		    struct ecore_ptt *p_ptt,
		    struct ecore_dcbx_mib_meta_data *p_data,
		    enum ecore_mib_read_type type)
{
	enum _ecore_status_t rc = ECORE_SUCCESS;
	u32 prefix_seq_num, suffix_seq_num;
	int read_count = 0;

	do {
		if (type == ECORE_DCBX_REMOTE_LLDP_MIB) {
			ecore_memcpy_from(p_hwfn, p_ptt, p_data->lldp_remote,
					  p_data->addr, p_data->size);
			prefix_seq_num = p_data->lldp_remote->prefix_seq_num;
			suffix_seq_num = p_data->lldp_remote->suffix_seq_num;
		} else {
			ecore_memcpy_from(p_hwfn, p_ptt, p_data->mib,
					  p_data->addr, p_data->size);
			prefix_seq_num = p_data->mib->prefix_seq_num;
			suffix_seq_num = p_data->mib->suffix_seq_num;
		}
		read_count++;

		DP_VERBOSE(p_hwfn, ECORE_MSG_DCB,
			   "mib type = %d, try count = %d prefix seq num  = %d suffix seq num = %d\n",
			   type, read_count, prefix_seq_num, suffix_seq_num);
	} while ((prefix_seq_num != suffix_seq_num) &&
		 (read_count < ECORE_DCBX_MAX_MIB_READ_TRY));

	if (read_count >= ECORE_DCBX_MAX_MIB_READ_TRY) {
		DP_ERR(p_hwfn,
		       "MIB read err, mib type = %d, try count = %d prefix seq num = %d suffix seq num = %d\n",
		       type, read_count, prefix_seq_num, suffix_seq_num);
		rc = ECORE_IO;
	}

	return rc;
}

static enum _ecore_status_t
ecore_dcbx_get_priority_info(struct ecore_hwfn *p_hwfn,
			     struct ecore_dcbx_app_prio *p_prio,
			     struct ecore_dcbx_results *p_results)
{
	enum _ecore_status_t rc = ECORE_SUCCESS;

	if (p_results->arr[DCBX_PROTOCOL_ETH].update &&
	    p_results->arr[DCBX_PROTOCOL_ETH].enable) {
		p_prio->eth = p_results->arr[DCBX_PROTOCOL_ETH].priority;
		DP_VERBOSE(p_hwfn, ECORE_MSG_DCB,
			   "Priority: eth %d\n", p_prio->eth);
	}

	return rc;
}

static void
ecore_dcbx_get_app_data(struct ecore_hwfn *p_hwfn,
			struct dcbx_app_priority_feature *p_app,
			struct dcbx_app_priority_entry *p_tbl,
			struct ecore_dcbx_params *p_params)
{
	int i;

	p_params->app_willing = ECORE_MFW_GET_FIELD(p_app->flags,
						    DCBX_APP_WILLING);
	p_params->app_valid = ECORE_MFW_GET_FIELD(p_app->flags,
						  DCBX_APP_ENABLED);
	p_params->num_app_entries = ECORE_MFW_GET_FIELD(p_app->flags,
							DCBX_APP_ENABLED);
	for (i = 0; i < DCBX_MAX_APP_PROTOCOL; i++)
		p_params->app_bitmap[i] = p_tbl[i].entry;

	DP_VERBOSE(p_hwfn, ECORE_MSG_DCB,
		   "APP params: willing %d, valid %d\n",
		   p_params->app_willing, p_params->app_valid);
}

static void
ecore_dcbx_get_pfc_data(struct ecore_hwfn *p_hwfn,
			u32 pfc, struct ecore_dcbx_params *p_params)
{
	p_params->pfc_willing = ECORE_MFW_GET_FIELD(pfc, DCBX_PFC_WILLING);
	p_params->max_pfc_tc = ECORE_MFW_GET_FIELD(pfc, DCBX_PFC_CAPS);
	p_params->pfc_enabled = ECORE_MFW_GET_FIELD(pfc, DCBX_PFC_ENABLED);
	p_params->pfc_bitmap = pfc;

	DP_VERBOSE(p_hwfn, ECORE_MSG_DCB,
		   "PFC params: willing %d, pfc_bitmap %d\n",
		   p_params->pfc_willing, p_params->pfc_bitmap);
}

static void
ecore_dcbx_get_ets_data(struct ecore_hwfn *p_hwfn,
			struct dcbx_ets_feature *p_ets,
			struct ecore_dcbx_params *p_params)
{
	int i;

	p_params->ets_willing = ECORE_MFW_GET_FIELD(p_ets->flags,
						    DCBX_ETS_WILLING);
	p_params->ets_enabled = ECORE_MFW_GET_FIELD(p_ets->flags,
						    DCBX_ETS_ENABLED);
	p_params->max_ets_tc = ECORE_MFW_GET_FIELD(p_ets->flags,
						   DCBX_ETS_MAX_TCS);
	p_params->ets_pri_tc_tbl[0] = p_ets->pri_tc_tbl[0];

	DP_VERBOSE(p_hwfn, ECORE_MSG_DCB,
		   "ETS params: willing %d, pri_tc_tbl_0 %x max_ets_tc %d\n",
		   p_params->ets_willing, p_params->ets_pri_tc_tbl[0],
		   p_params->max_ets_tc);

	/* 8 bit tsa and bw data corresponding to each of the 8 TC's are
	 * encoded in a type u32 array of size 2.
	 */
	for (i = 0; i < 2; i++) {
		p_params->ets_tc_tsa_tbl[i] = p_ets->tc_tsa_tbl[i];
		p_params->ets_tc_bw_tbl[i] = p_ets->tc_bw_tbl[i];

		DP_VERBOSE(p_hwfn, ECORE_MSG_DCB,
			   "elem %d  bw_tbl %x tsa_tbl %x\n",
			   i, p_params->ets_tc_bw_tbl[i],
			   p_params->ets_tc_tsa_tbl[i]);
	}
}

static enum _ecore_status_t
ecore_dcbx_get_common_params(struct ecore_hwfn *p_hwfn,
			     struct dcbx_app_priority_feature *p_app,
			     struct dcbx_app_priority_entry *p_tbl,
			     struct dcbx_ets_feature *p_ets,
			     u32 pfc, struct ecore_dcbx_params *p_params)
{
	ecore_dcbx_get_app_data(p_hwfn, p_app, p_tbl, p_params);
	ecore_dcbx_get_ets_data(p_hwfn, p_ets, p_params);
	ecore_dcbx_get_pfc_data(p_hwfn, pfc, p_params);

	return ECORE_SUCCESS;
}

static enum _ecore_status_t
ecore_dcbx_get_local_params(struct ecore_hwfn *p_hwfn,
			    struct ecore_ptt *p_ptt,
			    struct ecore_dcbx_get *params)
{
	struct ecore_dcbx_admin_params *p_local;
	struct dcbx_app_priority_feature *p_app;
	struct dcbx_app_priority_entry *p_tbl;
	struct ecore_dcbx_params *p_data;
	struct dcbx_ets_feature *p_ets;
	u32 pfc;

	p_local = &params->local;
	p_data = &p_local->params;
	p_app = &p_hwfn->p_dcbx_info->local_admin.features.app;
	p_tbl = p_app->app_pri_tbl;
	p_ets = &p_hwfn->p_dcbx_info->local_admin.features.ets;
	pfc = p_hwfn->p_dcbx_info->local_admin.features.pfc;

	ecore_dcbx_get_common_params(p_hwfn, p_app, p_tbl, p_ets, pfc, p_data);
	p_local->valid = true;

	return ECORE_SUCCESS;
}

static enum _ecore_status_t
ecore_dcbx_get_remote_params(struct ecore_hwfn *p_hwfn,
			     struct ecore_ptt *p_ptt,
			     struct ecore_dcbx_get *params)
{
	struct ecore_dcbx_remote_params *p_remote;
	struct dcbx_app_priority_feature *p_app;
	struct dcbx_app_priority_entry *p_tbl;
	struct ecore_dcbx_params *p_data;
	struct dcbx_ets_feature *p_ets;
	u32 pfc;

	p_remote = &params->remote;
	p_data = &p_remote->params;
	p_app = &p_hwfn->p_dcbx_info->remote.features.app;
	p_tbl = p_app->app_pri_tbl;
	p_ets = &p_hwfn->p_dcbx_info->remote.features.ets;
	pfc = p_hwfn->p_dcbx_info->remote.features.pfc;

	ecore_dcbx_get_common_params(p_hwfn, p_app, p_tbl, p_ets, pfc, p_data);
	p_remote->valid = true;

	return ECORE_SUCCESS;
}

static enum _ecore_status_t
ecore_dcbx_get_operational_params(struct ecore_hwfn *p_hwfn,
				  struct ecore_ptt *p_ptt,
				  struct ecore_dcbx_get *params)
{
	struct ecore_dcbx_operational_params *p_operational;
	enum _ecore_status_t rc = ECORE_SUCCESS;
	struct dcbx_app_priority_feature *p_app;
	struct dcbx_app_priority_entry *p_tbl;
	struct ecore_dcbx_results *p_results;
	struct ecore_dcbx_params *p_data;
	struct dcbx_ets_feature *p_ets;
	bool enabled, err;
	u32 pfc, flags;

	flags = p_hwfn->p_dcbx_info->operational.flags;

	/* If DCBx version is non zero, then negotiation
	 * was successfuly performed
	 */
	p_operational = &params->operational;
	enabled = ecore_dcbx_enabled(flags);
	if (!enabled) {
		p_operational->enabled = enabled;
		p_operational->valid = false;
		return ECORE_INVAL;
	}

	p_data = &p_operational->params;
	p_results = &p_hwfn->p_dcbx_info->results;
	p_app = &p_hwfn->p_dcbx_info->operational.features.app;
	p_tbl = p_app->app_pri_tbl;
	p_ets = &p_hwfn->p_dcbx_info->operational.features.ets;
	pfc = p_hwfn->p_dcbx_info->operational.features.pfc;

	p_operational->ieee = ecore_dcbx_ieee(flags);
	p_operational->cee = ecore_dcbx_cee(flags);

	DP_VERBOSE(p_hwfn, ECORE_MSG_DCB,
		   "Version support: ieee %d, cee %d\n",
		   p_operational->ieee, p_operational->cee);

	ecore_dcbx_get_common_params(p_hwfn, p_app, p_tbl, p_ets, pfc, p_data);
	ecore_dcbx_get_priority_info(p_hwfn, &p_operational->app_prio,
				     p_results);
	err = ECORE_MFW_GET_FIELD(p_app->flags, DCBX_APP_ERROR);
	p_operational->err = err;
	p_operational->enabled = enabled;
	p_operational->valid = true;

	return rc;
}

static enum _ecore_status_t
ecore_dcbx_get_local_lldp_params(struct ecore_hwfn *p_hwfn,
				 struct ecore_ptt *p_ptt,
				 struct ecore_dcbx_get *params)
{
	struct ecore_dcbx_lldp_local *p_local;
	osal_size_t size;
	u32 *dest;

	p_local = &params->lldp_local;

	size = OSAL_ARRAY_SIZE(p_local->local_chassis_id);
	dest = p_hwfn->p_dcbx_info->get.lldp_local.local_chassis_id;
	OSAL_MEMCPY(dest, p_local->local_chassis_id, size);

	size = OSAL_ARRAY_SIZE(p_local->local_port_id);
	dest = p_hwfn->p_dcbx_info->get.lldp_local.local_port_id;
	OSAL_MEMCPY(dest, p_local->local_port_id, size);

	return ECORE_SUCCESS;
}

static enum _ecore_status_t
ecore_dcbx_get_remote_lldp_params(struct ecore_hwfn *p_hwfn,
				  struct ecore_ptt *p_ptt,
				  struct ecore_dcbx_get *params)
{
	struct ecore_dcbx_lldp_remote *p_remote;
	osal_size_t size;
	u32 *dest;

	p_remote = &params->lldp_remote;

	size = OSAL_ARRAY_SIZE(p_remote->peer_chassis_id);
	dest = p_hwfn->p_dcbx_info->get.lldp_remote.peer_chassis_id;
	OSAL_MEMCPY(dest, p_remote->peer_chassis_id, size);

	size = OSAL_ARRAY_SIZE(p_remote->peer_port_id);
	dest = p_hwfn->p_dcbx_info->get.lldp_remote.peer_port_id;
	OSAL_MEMCPY(dest, p_remote->peer_port_id, size);

	return ECORE_SUCCESS;
}

static enum _ecore_status_t
ecore_dcbx_get_params(struct ecore_hwfn *p_hwfn,
		      struct ecore_ptt *p_ptt, enum ecore_mib_read_type type)
{
	enum _ecore_status_t rc = ECORE_SUCCESS;
	struct ecore_dcbx_get *p_params;

	p_params = &p_hwfn->p_dcbx_info->get;

	switch (type) {
	case ECORE_DCBX_REMOTE_MIB:
		ecore_dcbx_get_remote_params(p_hwfn, p_ptt, p_params);
		break;
	case ECORE_DCBX_LOCAL_MIB:
		ecore_dcbx_get_local_params(p_hwfn, p_ptt, p_params);
		break;
	case ECORE_DCBX_OPERATIONAL_MIB:
		ecore_dcbx_get_operational_params(p_hwfn, p_ptt, p_params);
		break;
	case ECORE_DCBX_REMOTE_LLDP_MIB:
		rc = ecore_dcbx_get_remote_lldp_params(p_hwfn, p_ptt, p_params);
		break;
	case ECORE_DCBX_LOCAL_LLDP_MIB:
		rc = ecore_dcbx_get_local_lldp_params(p_hwfn, p_ptt, p_params);
		break;
	default:
		DP_ERR(p_hwfn, "MIB read err, unknown mib type %d\n", type);
		return ECORE_INVAL;
	}

	return rc;
}

static enum _ecore_status_t
ecore_dcbx_read_local_lldp_mib(struct ecore_hwfn *p_hwfn,
			       struct ecore_ptt *p_ptt)
{
	enum _ecore_status_t rc = ECORE_SUCCESS;
	struct ecore_dcbx_mib_meta_data data;

	data.addr = p_hwfn->mcp_info->port_addr + offsetof(struct public_port,
							   lldp_config_params);
	data.lldp_local = p_hwfn->p_dcbx_info->lldp_local;
	data.size = sizeof(struct lldp_config_params_s);
	ecore_memcpy_from(p_hwfn, p_ptt, data.lldp_local, data.addr, data.size);

	return rc;
}

static enum _ecore_status_t
ecore_dcbx_read_remote_lldp_mib(struct ecore_hwfn *p_hwfn,
				struct ecore_ptt *p_ptt,
				enum ecore_mib_read_type type)
{
	enum _ecore_status_t rc = ECORE_SUCCESS;
	struct ecore_dcbx_mib_meta_data data;

	data.addr = p_hwfn->mcp_info->port_addr + offsetof(struct public_port,
							   lldp_status_params);
	data.lldp_remote = p_hwfn->p_dcbx_info->lldp_remote;
	data.size = sizeof(struct lldp_status_params_s);
	rc = ecore_dcbx_copy_mib(p_hwfn, p_ptt, &data, type);

	return rc;
}

static enum _ecore_status_t
ecore_dcbx_read_operational_mib(struct ecore_hwfn *p_hwfn,
				struct ecore_ptt *p_ptt,
				enum ecore_mib_read_type type)
{
	struct ecore_dcbx_mib_meta_data data;
	enum _ecore_status_t rc = ECORE_SUCCESS;

	data.addr = p_hwfn->mcp_info->port_addr +
	    offsetof(struct public_port, operational_dcbx_mib);
	data.mib = &p_hwfn->p_dcbx_info->operational;
	data.size = sizeof(struct dcbx_mib);
	rc = ecore_dcbx_copy_mib(p_hwfn, p_ptt, &data, type);

	return rc;
}

static enum _ecore_status_t
ecore_dcbx_read_remote_mib(struct ecore_hwfn *p_hwfn,
			   struct ecore_ptt *p_ptt,
			   enum ecore_mib_read_type type)
{
	struct ecore_dcbx_mib_meta_data data;
	enum _ecore_status_t rc = ECORE_SUCCESS;

	data.addr = p_hwfn->mcp_info->port_addr +
	    offsetof(struct public_port, remote_dcbx_mib);
	data.mib = &p_hwfn->p_dcbx_info->remote;
	data.size = sizeof(struct dcbx_mib);
	rc = ecore_dcbx_copy_mib(p_hwfn, p_ptt, &data, type);

	return rc;
}

static enum _ecore_status_t
ecore_dcbx_read_local_mib(struct ecore_hwfn *p_hwfn, struct ecore_ptt *p_ptt)
{
	struct ecore_dcbx_mib_meta_data data;
	enum _ecore_status_t rc = ECORE_SUCCESS;

	data.addr = p_hwfn->mcp_info->port_addr +
	    offsetof(struct public_port, local_admin_dcbx_mib);
	data.local_admin = &p_hwfn->p_dcbx_info->local_admin;
	data.size = sizeof(struct dcbx_local_params);
	ecore_memcpy_from(p_hwfn, p_ptt, data.local_admin,
			  data.addr, data.size);

	return rc;
}

static enum _ecore_status_t ecore_dcbx_read_mib(struct ecore_hwfn *p_hwfn,
						struct ecore_ptt *p_ptt,
						enum ecore_mib_read_type type)
{
	enum _ecore_status_t rc = ECORE_SUCCESS;

	switch (type) {
	case ECORE_DCBX_OPERATIONAL_MIB:
		rc = ecore_dcbx_read_operational_mib(p_hwfn, p_ptt, type);
		break;
	case ECORE_DCBX_REMOTE_MIB:
		rc = ecore_dcbx_read_remote_mib(p_hwfn, p_ptt, type);
		break;
	case ECORE_DCBX_LOCAL_MIB:
		rc = ecore_dcbx_read_local_mib(p_hwfn, p_ptt);
		break;
	case ECORE_DCBX_REMOTE_LLDP_MIB:
		rc = ecore_dcbx_read_remote_lldp_mib(p_hwfn, p_ptt, type);
		break;
	case ECORE_DCBX_LOCAL_LLDP_MIB:
		rc = ecore_dcbx_read_local_lldp_mib(p_hwfn, p_ptt);
		break;
	default:
		DP_ERR(p_hwfn, "MIB read err, unknown mib type %d\n", type);
		return ECORE_INVAL;
	}

	return rc;
}

/*
 * Read updated MIB.
 * Reconfigure QM and invoke PF update ramrod command if operational MIB
 * change is detected.
 */
enum _ecore_status_t
ecore_dcbx_mib_update_event(struct ecore_hwfn *p_hwfn, struct ecore_ptt *p_ptt,
			    enum ecore_mib_read_type type)
{
	enum _ecore_status_t rc = ECORE_SUCCESS;

	rc = ecore_dcbx_read_mib(p_hwfn, p_ptt, type);
	if (rc)
		return rc;

	if (type == ECORE_DCBX_OPERATIONAL_MIB) {
		rc = ecore_dcbx_process_mib_info(p_hwfn);
		if (!rc) {
			bool enabled;

			/* reconfigure tcs of QM queues according
			 * to negotiation results
			 */
			ecore_qm_reconf(p_hwfn, p_ptt);

			/* update storm FW with negotiation results */
			ecore_sp_pf_update(p_hwfn);

			/* set eagle enigne 1 flow control workaround
			 * according to negotiation results
			 */
			enabled = p_hwfn->p_dcbx_info->results.dcbx_enabled;
			ecore_dcbx_eagle_workaround(p_hwfn, p_ptt, enabled);
		}
	}
	ecore_dcbx_get_params(p_hwfn, p_ptt, type);
	OSAL_DCBX_AEN(p_hwfn, type);

	return rc;
}

enum _ecore_status_t ecore_dcbx_info_alloc(struct ecore_hwfn *p_hwfn)
{
	enum _ecore_status_t rc = ECORE_SUCCESS;

	p_hwfn->p_dcbx_info = OSAL_ZALLOC(p_hwfn->p_dev, GFP_KERNEL,
					  sizeof(struct ecore_dcbx_info));
	if (!p_hwfn->p_dcbx_info) {
		DP_NOTICE(p_hwfn, true,
			  "Failed to allocate `struct ecore_dcbx_info'");
		rc = ECORE_NOMEM;
	}

	return rc;
}

void ecore_dcbx_info_free(struct ecore_hwfn *p_hwfn,
			  struct ecore_dcbx_info *p_dcbx_info)
{
	OSAL_FREE(p_hwfn->p_dev, p_hwfn->p_dcbx_info);
}

static void ecore_dcbx_update_protocol_data(struct protocol_dcb_data *p_data,
					    struct ecore_dcbx_results *p_src,
					    enum dcbx_protocol_type type)
{
	p_data->dcb_enable_flag = p_src->arr[type].enable;
	p_data->dcb_priority = p_src->arr[type].priority;
	p_data->dcb_tc = p_src->arr[type].tc;
}

/* Set pf update ramrod command params */
void ecore_dcbx_set_pf_update_params(struct ecore_dcbx_results *p_src,
				     struct pf_update_ramrod_data *p_dest)
{
	struct protocol_dcb_data *p_dcb_data;
	bool update_flag;

	p_dest->pf_id = p_src->pf_id;

	update_flag = p_src->arr[DCBX_PROTOCOL_ETH].update;
	p_dest->update_eth_dcb_data_flag = update_flag;

	p_dcb_data = &p_dest->eth_dcb_data;
	ecore_dcbx_update_protocol_data(p_dcb_data, p_src, DCBX_PROTOCOL_ETH);
}

static
enum _ecore_status_t ecore_dcbx_query(struct ecore_hwfn *p_hwfn,
				      enum ecore_mib_read_type type)
{
	struct ecore_ptt *p_ptt;
	enum _ecore_status_t rc;

	p_ptt = ecore_ptt_acquire(p_hwfn);
	if (!p_ptt) {
		rc = ECORE_TIMEOUT;
		DP_ERR(p_hwfn, "rc = %d\n", rc);
		return rc;
	}

	rc = ecore_dcbx_read_mib(p_hwfn, p_ptt, type);
	if (rc != ECORE_SUCCESS)
		goto out;

	rc = ecore_dcbx_get_params(p_hwfn, p_ptt, type);

out:
	ecore_ptt_release(p_hwfn, p_ptt);
	return rc;
}

enum _ecore_status_t ecore_dcbx_query_params(struct ecore_hwfn *p_hwfn,
					     struct ecore_dcbx_get *p_get,
					     enum ecore_mib_read_type type)
{
	enum _ecore_status_t rc;

	rc = ecore_dcbx_query(p_hwfn, type);
	if (rc)
		return rc;

	if (p_get != OSAL_NULL)
		OSAL_MEMCPY(p_get, &p_hwfn->p_dcbx_info->get,
			    sizeof(struct ecore_dcbx_get));

	return rc;
}