1 files changed, 669 insertions, 0 deletions

diff --git a/drivers/net/ethernet/brocade/bna/bfa_msgq.c b/drivers/net/ethernet/brocade/bna/bfa_msgq.c
new file mode 100644
index 000000000000..dd36427f4752
--- /dev/null
+++ b/drivers/net/ethernet/brocade/bna/bfa_msgq.c
@@ -0,0 +1,669 @@
+/*
+ * Linux network driver for Brocade Converged Network Adapter.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License (GPL) Version 2 as
+ * published by the Free Software Foundation
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ */
+/*
+ * Copyright (c) 2005-2011 Brocade Communications Systems, Inc.
+ * All rights reserved
+ * www.brocade.com
+ */
+
+/**
+ * @file bfa_msgq.c MSGQ module source file.
+ */
+
+#include "bfi.h"
+#include "bfa_msgq.h"
+#include "bfa_ioc.h"
+
+#define call_cmdq_ent_cbfn(_cmdq_ent, _status)				\
+{									\
+	bfa_msgq_cmdcbfn_t cbfn;					\
+	void *cbarg;							\
+	cbfn = (_cmdq_ent)->cbfn;					\
+	cbarg = (_cmdq_ent)->cbarg;					\
+	(_cmdq_ent)->cbfn = NULL;					\
+	(_cmdq_ent)->cbarg = NULL;					\
+	if (cbfn) {							\
+		cbfn(cbarg, (_status));					\
+	}								\
+}
+
+static void bfa_msgq_cmdq_dbell(struct bfa_msgq_cmdq *cmdq);
+static void bfa_msgq_cmdq_copy_rsp(struct bfa_msgq_cmdq *cmdq);
+
+enum cmdq_event {
+	CMDQ_E_START			= 1,
+	CMDQ_E_STOP			= 2,
+	CMDQ_E_FAIL			= 3,
+	CMDQ_E_POST			= 4,
+	CMDQ_E_INIT_RESP		= 5,
+	CMDQ_E_DB_READY			= 6,
+};
+
+bfa_fsm_state_decl(cmdq, stopped, struct bfa_msgq_cmdq, enum cmdq_event);
+bfa_fsm_state_decl(cmdq, init_wait, struct bfa_msgq_cmdq, enum cmdq_event);
+bfa_fsm_state_decl(cmdq, ready, struct bfa_msgq_cmdq, enum cmdq_event);
+bfa_fsm_state_decl(cmdq, dbell_wait, struct bfa_msgq_cmdq,
+			enum cmdq_event);
+
+static void
+cmdq_sm_stopped_entry(struct bfa_msgq_cmdq *cmdq)
+{
+	struct bfa_msgq_cmd_entry *cmdq_ent;
+
+	cmdq->producer_index = 0;
+	cmdq->consumer_index = 0;
+	cmdq->flags = 0;
+	cmdq->token = 0;
+	cmdq->offset = 0;
+	cmdq->bytes_to_copy = 0;
+	while (!list_empty(&cmdq->pending_q)) {
+		bfa_q_deq(&cmdq->pending_q, &cmdq_ent);
+		bfa_q_qe_init(&cmdq_ent->qe);
+		call_cmdq_ent_cbfn(cmdq_ent, BFA_STATUS_FAILED);
+	}
+}
+
+static void
+cmdq_sm_stopped(struct bfa_msgq_cmdq *cmdq, enum cmdq_event event)
+{
+	switch (event) {
+	case CMDQ_E_START:
+		bfa_fsm_set_state(cmdq, cmdq_sm_init_wait);
+		break;
+
+	case CMDQ_E_STOP:
+	case CMDQ_E_FAIL:
+		/* No-op */
+		break;
+
+	case CMDQ_E_POST:
+		cmdq->flags |= BFA_MSGQ_CMDQ_F_DB_UPDATE;
+		break;
+
+	default:
+		bfa_sm_fault(event);
+	}
+}
+
+static void
+cmdq_sm_init_wait_entry(struct bfa_msgq_cmdq *cmdq)
+{
+	bfa_wc_down(&cmdq->msgq->init_wc);
+}
+
+static void
+cmdq_sm_init_wait(struct bfa_msgq_cmdq *cmdq, enum cmdq_event event)
+{
+	switch (event) {
+	case CMDQ_E_STOP:
+	case CMDQ_E_FAIL:
+		bfa_fsm_set_state(cmdq, cmdq_sm_stopped);
+		break;
+
+	case CMDQ_E_POST:
+		cmdq->flags |= BFA_MSGQ_CMDQ_F_DB_UPDATE;
+		break;
+
+	case CMDQ_E_INIT_RESP:
+		if (cmdq->flags & BFA_MSGQ_CMDQ_F_DB_UPDATE) {
+			cmdq->flags &= ~BFA_MSGQ_CMDQ_F_DB_UPDATE;
+			bfa_fsm_set_state(cmdq, cmdq_sm_dbell_wait);
+		} else
+			bfa_fsm_set_state(cmdq, cmdq_sm_ready);
+		break;
+
+	default:
+		bfa_sm_fault(event);
+	}
+}
+
+static void
+cmdq_sm_ready_entry(struct bfa_msgq_cmdq *cmdq)
+{
+}
+
+static void
+cmdq_sm_ready(struct bfa_msgq_cmdq *cmdq, enum cmdq_event event)
+{
+	switch (event) {
+	case CMDQ_E_STOP:
+	case CMDQ_E_FAIL:
+		bfa_fsm_set_state(cmdq, cmdq_sm_stopped);
+		break;
+
+	case CMDQ_E_POST:
+		bfa_fsm_set_state(cmdq, cmdq_sm_dbell_wait);
+		break;
+
+	default:
+		bfa_sm_fault(event);
+	}
+}
+
+static void
+cmdq_sm_dbell_wait_entry(struct bfa_msgq_cmdq *cmdq)
+{
+	bfa_msgq_cmdq_dbell(cmdq);
+}
+
+static void
+cmdq_sm_dbell_wait(struct bfa_msgq_cmdq *cmdq, enum cmdq_event event)
+{
+	switch (event) {
+	case CMDQ_E_STOP:
+	case CMDQ_E_FAIL:
+		bfa_fsm_set_state(cmdq, cmdq_sm_stopped);
+		break;
+
+	case CMDQ_E_POST:
+		cmdq->flags |= BFA_MSGQ_CMDQ_F_DB_UPDATE;
+		break;
+
+	case CMDQ_E_DB_READY:
+		if (cmdq->flags & BFA_MSGQ_CMDQ_F_DB_UPDATE) {
+			cmdq->flags &= ~BFA_MSGQ_CMDQ_F_DB_UPDATE;
+			bfa_fsm_set_state(cmdq, cmdq_sm_dbell_wait);
+		} else
+			bfa_fsm_set_state(cmdq, cmdq_sm_ready);
+		break;
+
+	default:
+		bfa_sm_fault(event);
+	}
+}
+
+static void
+bfa_msgq_cmdq_dbell_ready(void *arg)
+{
+	struct bfa_msgq_cmdq *cmdq = (struct bfa_msgq_cmdq *)arg;
+	bfa_fsm_send_event(cmdq, CMDQ_E_DB_READY);
+}
+
+static void
+bfa_msgq_cmdq_dbell(struct bfa_msgq_cmdq *cmdq)
+{
+	struct bfi_msgq_h2i_db *dbell =
+		(struct bfi_msgq_h2i_db *)(&cmdq->dbell_mb.msg[0]);
+
+	memset(dbell, 0, sizeof(struct bfi_msgq_h2i_db));
+	bfi_h2i_set(dbell->mh, BFI_MC_MSGQ, BFI_MSGQ_H2I_DOORBELL_PI, 0);
+	dbell->mh.mtag.i2htok = 0;
+	dbell->idx.cmdq_pi = htons(cmdq->producer_index);
+
+	if (!bfa_nw_ioc_mbox_queue(cmdq->msgq->ioc, &cmdq->dbell_mb,
+				bfa_msgq_cmdq_dbell_ready, cmdq)) {
+		bfa_msgq_cmdq_dbell_ready(cmdq);
+	}
+}
+
+static void
+__cmd_copy(struct bfa_msgq_cmdq *cmdq, struct bfa_msgq_cmd_entry *cmd)
+{
+	size_t len = cmd->msg_size;
+	int num_entries = 0;
+	size_t to_copy;
+	u8 *src, *dst;
+
+	src = (u8 *)cmd->msg_hdr;
+	dst = (u8 *)cmdq->addr.kva;
+	dst += (cmdq->producer_index * BFI_MSGQ_CMD_ENTRY_SIZE);
+
+	while (len) {
+		to_copy = (len < BFI_MSGQ_CMD_ENTRY_SIZE) ?
+				len : BFI_MSGQ_CMD_ENTRY_SIZE;
+		memcpy(dst, src, to_copy);
+		len -= to_copy;
+		src += BFI_MSGQ_CMD_ENTRY_SIZE;
+		BFA_MSGQ_INDX_ADD(cmdq->producer_index, 1, cmdq->depth);
+		dst = (u8 *)cmdq->addr.kva;
+		dst += (cmdq->producer_index * BFI_MSGQ_CMD_ENTRY_SIZE);
+		num_entries++;
+	}
+
+}
+
+static void
+bfa_msgq_cmdq_ci_update(struct bfa_msgq_cmdq *cmdq, struct bfi_mbmsg *mb)
+{
+	struct bfi_msgq_i2h_db *dbell = (struct bfi_msgq_i2h_db *)mb;
+	struct bfa_msgq_cmd_entry *cmd;
+	int posted = 0;
+
+	cmdq->consumer_index = ntohs(dbell->idx.cmdq_ci);
+
+	/* Walk through pending list to see if the command can be posted */
+	while (!list_empty(&cmdq->pending_q)) {
+		cmd =
+		(struct bfa_msgq_cmd_entry *)bfa_q_first(&cmdq->pending_q);
+		if (ntohs(cmd->msg_hdr->num_entries) <=
+			BFA_MSGQ_FREE_CNT(cmdq)) {
+			list_del(&cmd->qe);
+			__cmd_copy(cmdq, cmd);
+			posted = 1;
+			call_cmdq_ent_cbfn(cmd, BFA_STATUS_OK);
+		} else {
+			break;
+		}
+	}
+
+	if (posted)
+		bfa_fsm_send_event(cmdq, CMDQ_E_POST);
+}
+
+static void
+bfa_msgq_cmdq_copy_next(void *arg)
+{
+	struct bfa_msgq_cmdq *cmdq = (struct bfa_msgq_cmdq *)arg;
+
+	if (cmdq->bytes_to_copy)
+		bfa_msgq_cmdq_copy_rsp(cmdq);
+}
+
+static void
+bfa_msgq_cmdq_copy_req(struct bfa_msgq_cmdq *cmdq, struct bfi_mbmsg *mb)
+{
+	struct bfi_msgq_i2h_cmdq_copy_req *req =
+		(struct bfi_msgq_i2h_cmdq_copy_req *)mb;
+
+	cmdq->token = 0;
+	cmdq->offset = ntohs(req->offset);
+	cmdq->bytes_to_copy = ntohs(req->len);
+	bfa_msgq_cmdq_copy_rsp(cmdq);
+}
+
+static void
+bfa_msgq_cmdq_copy_rsp(struct bfa_msgq_cmdq *cmdq)
+{
+	struct bfi_msgq_h2i_cmdq_copy_rsp *rsp =
+		(struct bfi_msgq_h2i_cmdq_copy_rsp *)&cmdq->copy_mb.msg[0];
+	int copied;
+	u8 *addr = (u8 *)cmdq->addr.kva;
+
+	memset(rsp, 0, sizeof(struct bfi_msgq_h2i_cmdq_copy_rsp));
+	bfi_h2i_set(rsp->mh, BFI_MC_MSGQ, BFI_MSGQ_H2I_CMDQ_COPY_RSP, 0);
+	rsp->mh.mtag.i2htok = htons(cmdq->token);
+	copied = (cmdq->bytes_to_copy >= BFI_CMD_COPY_SZ) ? BFI_CMD_COPY_SZ :
+		cmdq->bytes_to_copy;
+	addr += cmdq->offset;
+	memcpy(rsp->data, addr, copied);
+
+	cmdq->token++;
+	cmdq->offset += copied;
+	cmdq->bytes_to_copy -= copied;
+
+	if (!bfa_nw_ioc_mbox_queue(cmdq->msgq->ioc, &cmdq->copy_mb,
+				bfa_msgq_cmdq_copy_next, cmdq)) {
+		bfa_msgq_cmdq_copy_next(cmdq);
+	}
+}
+
+static void
+bfa_msgq_cmdq_attach(struct bfa_msgq_cmdq *cmdq, struct bfa_msgq *msgq)
+{
+	cmdq->depth = BFA_MSGQ_CMDQ_NUM_ENTRY;
+	INIT_LIST_HEAD(&cmdq->pending_q);
+	cmdq->msgq = msgq;
+	bfa_fsm_set_state(cmdq, cmdq_sm_stopped);
+}
+
+static void bfa_msgq_rspq_dbell(struct bfa_msgq_rspq *rspq);
+
+enum rspq_event {
+	RSPQ_E_START			= 1,
+	RSPQ_E_STOP			= 2,
+	RSPQ_E_FAIL			= 3,
+	RSPQ_E_RESP			= 4,
+	RSPQ_E_INIT_RESP		= 5,
+	RSPQ_E_DB_READY			= 6,
+};
+
+bfa_fsm_state_decl(rspq, stopped, struct bfa_msgq_rspq, enum rspq_event);
+bfa_fsm_state_decl(rspq, init_wait, struct bfa_msgq_rspq,
+			enum rspq_event);
+bfa_fsm_state_decl(rspq, ready, struct bfa_msgq_rspq, enum rspq_event);
+bfa_fsm_state_decl(rspq, dbell_wait, struct bfa_msgq_rspq,
+			enum rspq_event);
+
+static void
+rspq_sm_stopped_entry(struct bfa_msgq_rspq *rspq)
+{
+	rspq->producer_index = 0;
+	rspq->consumer_index = 0;
+	rspq->flags = 0;
+}
+
+static void
+rspq_sm_stopped(struct bfa_msgq_rspq *rspq, enum rspq_event event)
+{
+	switch (event) {
+	case RSPQ_E_START:
+		bfa_fsm_set_state(rspq, rspq_sm_init_wait);
+		break;
+
+	case RSPQ_E_STOP:
+	case RSPQ_E_FAIL:
+		/* No-op */
+		break;
+
+	default:
+		bfa_sm_fault(event);
+	}
+}
+
+static void
+rspq_sm_init_wait_entry(struct bfa_msgq_rspq *rspq)
+{
+	bfa_wc_down(&rspq->msgq->init_wc);
+}
+
+static void
+rspq_sm_init_wait(struct bfa_msgq_rspq *rspq, enum rspq_event event)
+{
+	switch (event) {
+	case RSPQ_E_FAIL:
+	case RSPQ_E_STOP:
+		bfa_fsm_set_state(rspq, rspq_sm_stopped);
+		break;
+
+	case RSPQ_E_INIT_RESP:
+		bfa_fsm_set_state(rspq, rspq_sm_ready);
+		break;
+
+	default:
+		bfa_sm_fault(event);
+	}
+}
+
+static void
+rspq_sm_ready_entry(struct bfa_msgq_rspq *rspq)
+{
+}
+
+static void
+rspq_sm_ready(struct bfa_msgq_rspq *rspq, enum rspq_event event)
+{
+	switch (event) {
+	case RSPQ_E_STOP:
+	case RSPQ_E_FAIL:
+		bfa_fsm_set_state(rspq, rspq_sm_stopped);
+		break;
+
+	case RSPQ_E_RESP:
+		bfa_fsm_set_state(rspq, rspq_sm_dbell_wait);
+		break;
+
+	default:
+		bfa_sm_fault(event);
+	}
+}
+
+static void
+rspq_sm_dbell_wait_entry(struct bfa_msgq_rspq *rspq)
+{
+	if (!bfa_nw_ioc_is_disabled(rspq->msgq->ioc))
+		bfa_msgq_rspq_dbell(rspq);
+}
+
+static void
+rspq_sm_dbell_wait(struct bfa_msgq_rspq *rspq, enum rspq_event event)
+{
+	switch (event) {
+	case RSPQ_E_STOP:
+	case RSPQ_E_FAIL:
+		bfa_fsm_set_state(rspq, rspq_sm_stopped);
+		break;
+
+	case RSPQ_E_RESP:
+		rspq->flags |= BFA_MSGQ_RSPQ_F_DB_UPDATE;
+		break;
+
+	case RSPQ_E_DB_READY:
+		if (rspq->flags & BFA_MSGQ_RSPQ_F_DB_UPDATE) {
+			rspq->flags &= ~BFA_MSGQ_RSPQ_F_DB_UPDATE;
+			bfa_fsm_set_state(rspq, rspq_sm_dbell_wait);
+		} else
+			bfa_fsm_set_state(rspq, rspq_sm_ready);
+		break;
+
+	default:
+		bfa_sm_fault(event);
+	}
+}
+
+static void
+bfa_msgq_rspq_dbell_ready(void *arg)
+{
+	struct bfa_msgq_rspq *rspq = (struct bfa_msgq_rspq *)arg;
+	bfa_fsm_send_event(rspq, RSPQ_E_DB_READY);
+}
+
+static void
+bfa_msgq_rspq_dbell(struct bfa_msgq_rspq *rspq)
+{
+	struct bfi_msgq_h2i_db *dbell =
+		(struct bfi_msgq_h2i_db *)(&rspq->dbell_mb.msg[0]);
+
+	memset(dbell, 0, sizeof(struct bfi_msgq_h2i_db));
+	bfi_h2i_set(dbell->mh, BFI_MC_MSGQ, BFI_MSGQ_H2I_DOORBELL_CI, 0);
+	dbell->mh.mtag.i2htok = 0;
+	dbell->idx.rspq_ci = htons(rspq->consumer_index);
+
+	if (!bfa_nw_ioc_mbox_queue(rspq->msgq->ioc, &rspq->dbell_mb,
+				bfa_msgq_rspq_dbell_ready, rspq)) {
+		bfa_msgq_rspq_dbell_ready(rspq);
+	}
+}
+
+static void
+bfa_msgq_rspq_pi_update(struct bfa_msgq_rspq *rspq, struct bfi_mbmsg *mb)
+{
+	struct bfi_msgq_i2h_db *dbell = (struct bfi_msgq_i2h_db *)mb;
+	struct bfi_msgq_mhdr *msghdr;
+	int num_entries;
+	int mc;
+	u8 *rspq_qe;
+
+	rspq->producer_index = ntohs(dbell->idx.rspq_pi);
+
+	while (rspq->consumer_index != rspq->producer_index) {
+		rspq_qe = (u8 *)rspq->addr.kva;
+		rspq_qe += (rspq->consumer_index * BFI_MSGQ_RSP_ENTRY_SIZE);
+		msghdr = (struct bfi_msgq_mhdr *)rspq_qe;
+
+		mc = msghdr->msg_class;
+		num_entries = ntohs(msghdr->num_entries);
+
+		if ((mc >= BFI_MC_MAX) || (rspq->rsphdlr[mc].cbfn == NULL))
+			break;
+
+		(rspq->rsphdlr[mc].cbfn)(rspq->rsphdlr[mc].cbarg, msghdr);
+
+		BFA_MSGQ_INDX_ADD(rspq->consumer_index, num_entries,
+				rspq->depth);
+	}
+
+	bfa_fsm_send_event(rspq, RSPQ_E_RESP);
+}
+
+static void
+bfa_msgq_rspq_attach(struct bfa_msgq_rspq *rspq, struct bfa_msgq *msgq)
+{
+	rspq->depth = BFA_MSGQ_RSPQ_NUM_ENTRY;
+	rspq->msgq = msgq;
+	bfa_fsm_set_state(rspq, rspq_sm_stopped);
+}
+
+static void
+bfa_msgq_init_rsp(struct bfa_msgq *msgq,
+		 struct bfi_mbmsg *mb)
+{
+	bfa_fsm_send_event(&msgq->cmdq, CMDQ_E_INIT_RESP);
+	bfa_fsm_send_event(&msgq->rspq, RSPQ_E_INIT_RESP);
+}
+
+static void
+bfa_msgq_init(void *arg)
+{
+	struct bfa_msgq *msgq = (struct bfa_msgq *)arg;
+	struct bfi_msgq_cfg_req *msgq_cfg =
+		(struct bfi_msgq_cfg_req *)&msgq->init_mb.msg[0];
+
+	memset(msgq_cfg, 0, sizeof(struct bfi_msgq_cfg_req));
+	bfi_h2i_set(msgq_cfg->mh, BFI_MC_MSGQ, BFI_MSGQ_H2I_INIT_REQ, 0);
+	msgq_cfg->mh.mtag.i2htok = 0;
+
+	bfa_dma_be_addr_set(msgq_cfg->cmdq.addr, msgq->cmdq.addr.pa);
+	msgq_cfg->cmdq.q_depth = htons(msgq->cmdq.depth);
+	bfa_dma_be_addr_set(msgq_cfg->rspq.addr, msgq->rspq.addr.pa);
+	msgq_cfg->rspq.q_depth = htons(msgq->rspq.depth);
+
+	bfa_nw_ioc_mbox_queue(msgq->ioc, &msgq->init_mb, NULL, NULL);
+}
+
+static void
+bfa_msgq_isr(void *cbarg, struct bfi_mbmsg *msg)
+{
+	struct bfa_msgq *msgq = (struct bfa_msgq *)cbarg;
+
+	switch (msg->mh.msg_id) {
+	case BFI_MSGQ_I2H_INIT_RSP:
+		bfa_msgq_init_rsp(msgq, msg);
+		break;
+
+	case BFI_MSGQ_I2H_DOORBELL_PI:
+		bfa_msgq_rspq_pi_update(&msgq->rspq, msg);
+		break;
+
+	case BFI_MSGQ_I2H_DOORBELL_CI:
+		bfa_msgq_cmdq_ci_update(&msgq->cmdq, msg);
+		break;
+
+	case BFI_MSGQ_I2H_CMDQ_COPY_REQ:
+		bfa_msgq_cmdq_copy_req(&msgq->cmdq, msg);
+		break;
+
+	default:
+		BUG_ON(1);
+	}
+}
+
+static void
+bfa_msgq_notify(void *cbarg, enum bfa_ioc_event event)
+{
+	struct bfa_msgq *msgq = (struct bfa_msgq *)cbarg;
+
+	switch (event) {
+	case BFA_IOC_E_ENABLED:
+		bfa_wc_init(&msgq->init_wc, bfa_msgq_init, msgq);
+		bfa_wc_up(&msgq->init_wc);
+		bfa_fsm_send_event(&msgq->cmdq, CMDQ_E_START);
+		bfa_wc_up(&msgq->init_wc);
+		bfa_fsm_send_event(&msgq->rspq, RSPQ_E_START);
+		bfa_wc_wait(&msgq->init_wc);
+		break;
+
+	case BFA_IOC_E_DISABLED:
+		bfa_fsm_send_event(&msgq->cmdq, CMDQ_E_STOP);
+		bfa_fsm_send_event(&msgq->rspq, RSPQ_E_STOP);
+		break;
+
+	case BFA_IOC_E_FAILED:
+		bfa_fsm_send_event(&msgq->cmdq, CMDQ_E_FAIL);
+		bfa_fsm_send_event(&msgq->rspq, RSPQ_E_FAIL);
+		break;
+
+	default:
+		break;
+	}
+}
+
+u32
+bfa_msgq_meminfo(void)
+{
+	return roundup(BFA_MSGQ_CMDQ_SIZE, BFA_DMA_ALIGN_SZ) +
+		roundup(BFA_MSGQ_RSPQ_SIZE, BFA_DMA_ALIGN_SZ);
+}
+
+void
+bfa_msgq_memclaim(struct bfa_msgq *msgq, u8 *kva, u64 pa)
+{
+	msgq->cmdq.addr.kva = kva;
+	msgq->cmdq.addr.pa  = pa;
+
+	kva += roundup(BFA_MSGQ_CMDQ_SIZE, BFA_DMA_ALIGN_SZ);
+	pa += roundup(BFA_MSGQ_CMDQ_SIZE, BFA_DMA_ALIGN_SZ);
+
+	msgq->rspq.addr.kva = kva;
+	msgq->rspq.addr.pa = pa;
+}
+
+void
+bfa_msgq_attach(struct bfa_msgq *msgq, struct bfa_ioc *ioc)
+{
+	msgq->ioc    = ioc;
+
+	bfa_msgq_cmdq_attach(&msgq->cmdq, msgq);
+	bfa_msgq_rspq_attach(&msgq->rspq, msgq);
+
+	bfa_nw_ioc_mbox_regisr(msgq->ioc, BFI_MC_MSGQ, bfa_msgq_isr, msgq);
+	bfa_q_qe_init(&msgq->ioc_notify);
+	bfa_ioc_notify_init(&msgq->ioc_notify, bfa_msgq_notify, msgq);
+	bfa_nw_ioc_notify_register(msgq->ioc, &msgq->ioc_notify);
+}
+
+void
+bfa_msgq_regisr(struct bfa_msgq *msgq, enum bfi_mclass mc,
+		bfa_msgq_mcfunc_t cbfn, void *cbarg)
+{
+	msgq->rspq.rsphdlr[mc].cbfn	= cbfn;
+	msgq->rspq.rsphdlr[mc].cbarg	= cbarg;
+}
+
+void
+bfa_msgq_cmd_post(struct bfa_msgq *msgq,  struct bfa_msgq_cmd_entry *cmd)
+{
+	if (ntohs(cmd->msg_hdr->num_entries) <=
+		BFA_MSGQ_FREE_CNT(&msgq->cmdq)) {
+		__cmd_copy(&msgq->cmdq, cmd);
+		call_cmdq_ent_cbfn(cmd, BFA_STATUS_OK);
+		bfa_fsm_send_event(&msgq->cmdq, CMDQ_E_POST);
+	} else {
+		list_add_tail(&cmd->qe, &msgq->cmdq.pending_q);
+	}
+}
+
+void
+bfa_msgq_rsp_copy(struct bfa_msgq *msgq, u8 *buf, size_t buf_len)
+{
+	struct bfa_msgq_rspq *rspq = &msgq->rspq;
+	size_t len = buf_len;
+	size_t to_copy;
+	int ci;
+	u8 *src, *dst;
+
+	ci = rspq->consumer_index;
+	src = (u8 *)rspq->addr.kva;
+	src += (ci * BFI_MSGQ_RSP_ENTRY_SIZE);
+	dst = buf;
+
+	while (len) {
+		to_copy = (len < BFI_MSGQ_RSP_ENTRY_SIZE) ?
+				len : BFI_MSGQ_RSP_ENTRY_SIZE;
+		memcpy(dst, src, to_copy);
+		len -= to_copy;
+		dst += BFI_MSGQ_RSP_ENTRY_SIZE;
+		BFA_MSGQ_INDX_ADD(ci, 1, rspq->depth);
+		src = (u8 *)rspq->addr.kva;
+		src += (ci * BFI_MSGQ_RSP_ENTRY_SIZE);
+	}
+}