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Commit 06e05204 authored by Bojun Pan's avatar Bojun Pan Committed by Gerrit - the friendly Code Review server
Browse files

msm: veth_ipa: Introduce front end network driver 



IPA offload Front End Driver Implementation.
This driver creates VETH0 network interface
and is responsible for Initialization and Setup
of offload channels.

Change-Id: Ia664f45c2cf339656dc8e169b184c0ebc1947cf5
Acked-by: default avatarDevesh Bisht <dbisht@qti.qualcomm.com>
Signed-off-by: default avatarBojun Pan <bojunp@codeaurora.org>
parent 39641649

Documentation/devicetree/bindings/platform/msm/veth_ipa.txt

0 → 100644
+14 −0
Original line number Diff line number Diff line 
Qualcomm Technologies, Inc. Veth IPA device



This specifies the bindings for QTI VETH_IPA that provides backhaul

connectivity.



Required properties:

- compatible: Must be "qcom,veth-ipa"





Example:

	qcom,veth-ipa {

		compatible = "qcom,veth-ipa";

	};

drivers/platform/msm/Kconfig

+8 −0
Original line number Diff line number Diff line
@@ -84,6 +84,14 @@ config USB_BAM 
	  USB BAM driver was added to supports SPS Peripheral-to-Peripheral

	  transfers between the USB and other peripheral.



config VETH_IPA

        tristate "VETH_IPA Network Interface Driver Support"

        help

          Enables EMAC Ethernet Front end driver.

          Register net device and configure VETH0 iface. This driver will

          configure EMAC IPA offload channels with help of a backend driver

          running on GVM Host.



config GSI

	bool "GSI support"

	help

drivers/platform/msm/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -13,3 +13,4 @@ obj-$(CONFIG_EP_PCIE) += ep_pcie/ 
obj-$(CONFIG_MSM_MHI_DEV) += mhi_dev/

obj-$(CONFIG_MSM_11AD) += msm_11ad/

obj-$(CONFIG_SEEMP_CORE) += seemp_core/

obj-$(CONFIG_VETH_IPA) += veth_ipa/

drivers/platform/msm/veth_ipa/Makefile

0 → 100644
+1 −0
Original line number Diff line number Diff line 
obj-$(CONFIG_VETH_IPA) += veth_emac_mgt.o veth_ipa.o

drivers/platform/msm/veth_ipa/veth_emac_mgt.c

0 → 100644
+622 −0
Original line number Diff line number Diff line 
/* Copyright (c) 2020, The Linux Foundation. All rights reserved.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 and

 * only 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.

 */



#include <linux/kernel.h>

#include <linux/module.h>

#include <linux/of.h>

#include <linux/habmm.h>

#include <linux/habmmid.h>

#include <linux/mm.h>

#include <linux/mman.h>

#include <linux/dma-mapping.h>

#include <linux/memory.h>

#include <linux/platform_device.h>

#include "veth_emac_mgt.h"



uint32_t veth_hab_pdata_size = 32;



int veth_alloc_emac_export_mem(

	struct veth_emac_export_mem *veth_emac_mem, struct veth_ipa_dev *pdata)

{

	phys_addr_t  tx_desc_mem_paddr;

	phys_addr_t  rx_desc_mem_paddr;

	phys_addr_t  tx_buf_mem_paddr;

	phys_addr_t  rx_buf_mem_paddr;

	phys_addr_t  tx_buf_pool_paddr;

	phys_addr_t  rx_buf_pool_paddr;



	int i = 0;



	VETH_IPA_DEBUG("%s - begin\n", __func__);



	/* Allocate TX DESC */

	veth_emac_mem->tx_desc_mem_va = dma_alloc_coherent(&pdata->pdev->dev,

		sizeof(struct s_TX_NORMAL_DESC) * VETH_TX_DESC_CNT,

		&tx_desc_mem_paddr,

		GFP_KERNEL | GFP_DMA);



	if (!veth_emac_mem->tx_desc_mem_va) {

		VETH_IPA_DEBUG("%s: No memory\n", __func__);

		return -ENOMEM;

	}



	veth_emac_mem->tx_desc_mem_paddr = tx_desc_mem_paddr;



	VETH_IPA_DEBUG("%s: TX desc base mem allocated %p\n",

		__func__, veth_emac_mem->tx_desc_mem_va);

	VETH_IPA_DEBUG("%s: physical addr: tx desc mem 0x%x\n",

		__func__, veth_emac_mem->tx_desc_mem_paddr);



	for (i = 0; i < VETH_TX_DESC_CNT; i++) {

		veth_emac_mem->tx_desc_ring_base[i] =

			veth_emac_mem->tx_desc_mem_paddr +

			(i * sizeof(struct s_TX_NORMAL_DESC));

		VETH_IPA_DEBUG(

			"%s: veth_emac_mem->tx_desc_ring_base [i] 0x%x\n",

			__func__, i, veth_emac_mem->tx_desc_ring_base[i]);

	}



	/*Allocate RX DESC */

	veth_emac_mem->rx_desc_mem_va = dma_alloc_coherent(&pdata->pdev->dev,

		sizeof(struct s_RX_NORMAL_DESC) * VETH_RX_DESC_CNT,

		&rx_desc_mem_paddr,

		GFP_KERNEL | GFP_DMA);



	if (!veth_emac_mem->rx_desc_mem_va) {

		VETH_IPA_DEBUG("%s: No memory\n", __func__);

		goto free_tx_desc_mem_va;

	}



	VETH_IPA_DEBUG("%s: RX desc mem allocated %p\n",

		__func__, veth_emac_mem->rx_desc_mem_va);

	veth_emac_mem->rx_desc_mem_paddr = rx_desc_mem_paddr;



	for (i = 0; i < VETH_RX_DESC_CNT; i++) {

		veth_emac_mem->rx_desc_ring_base[i] =

			veth_emac_mem->rx_desc_mem_paddr +

			(i * sizeof(struct s_RX_NORMAL_DESC));

		VETH_IPA_DEBUG(

			"%s: veth_emac_mem->rx_desc_ring_base [i] 0x%x\n",

			__func__, i, veth_emac_mem->rx_desc_ring_base[i]);

	}



	VETH_IPA_DEBUG("%s: physical addr: rx desc mem 0x%x\n",

		__func__, veth_emac_mem->rx_desc_mem_paddr);



	/*Allocate TX Buffers*/

	veth_emac_mem->tx_buf_mem_va = dma_alloc_coherent(&pdata->pdev->dev,

		VETH_ETH_FRAME_LEN_IPA * VETH_TX_DESC_CNT,

		&tx_buf_mem_paddr,

		GFP_KERNEL | GFP_DMA);



	if (!veth_emac_mem->tx_buf_mem_va) {

		VETH_IPA_DEBUG("%s: No memory\n", __func__);

		goto free_rx_desc_mem_va;

	}



	veth_emac_mem->tx_buf_mem_paddr = tx_buf_mem_paddr;



	VETH_IPA_DEBUG("%s: TX buf mem allocated %p\n",

		__func__, veth_emac_mem->tx_buf_mem_va);

	VETH_IPA_DEBUG("%s: physical addr: tx buf mem 0x%x\n",

		__func__, veth_emac_mem->tx_buf_mem_paddr);



	veth_emac_mem->tx_buff_pool_base =

		(uint32_t *)dma_zalloc_coherent(&pdata->pdev->dev,

			sizeof(uint32_t) * VETH_TX_DESC_CNT,

			&tx_buf_pool_paddr,

			GFP_KERNEL);



	if (!veth_emac_mem->tx_buff_pool_base) {

		VETH_IPA_DEBUG("%s: No memory for rx_buf_mem_va\n", __func__);

		goto free_tx_buf_mem_va;

	}



	veth_emac_mem->tx_buff_pool_base[0] = veth_emac_mem->tx_buf_mem_paddr;



	for (i = 0; i < VETH_TX_DESC_CNT; i++) {

		veth_emac_mem->tx_buff_pool_base[i] =

			veth_emac_mem->tx_buff_pool_base[0] +

			i*VETH_ETH_FRAME_LEN_IPA;

		VETH_IPA_DEBUG(

			"%s: veth_emac_mem->tx_buff_pool_base[%d] 0x%x\n",

			__func__, i, veth_emac_mem->tx_buff_pool_base[i]);

	}



	veth_emac_mem->tx_buff_pool_base_pa = tx_buf_pool_paddr;



	/* Allocate RX buffers*/

	veth_emac_mem->rx_buf_mem_va = dma_alloc_coherent(&pdata->pdev->dev,

		VETH_ETH_FRAME_LEN_IPA * VETH_RX_DESC_CNT,

		&rx_buf_mem_paddr,

		GFP_KERNEL | GFP_DMA);





	if (!veth_emac_mem->rx_buf_mem_va) {

		VETH_IPA_DEBUG("%s: No memory for rx_buf_mem_va\n", __func__);

		goto free_tx_buff_pool_base;

	}



	veth_emac_mem->rx_buf_mem_paddr = rx_buf_mem_paddr;



	VETH_IPA_DEBUG("%s: RX buf mem allocated %p\n",

		__func__, veth_emac_mem->rx_buf_mem_va);

	VETH_IPA_DEBUG("%s: physical addr: rx_buf_mem_addr 0x%x\n",

		__func__, veth_emac_mem->rx_buf_mem_paddr);



	veth_emac_mem->rx_buff_pool_base =

		(uint32_t *)dma_zalloc_coherent(&pdata->pdev->dev,

			sizeof(uint32_t) * VETH_RX_DESC_CNT,

			&rx_buf_pool_paddr,

			GFP_KERNEL);



	if (!veth_emac_mem->rx_buff_pool_base) {

		VETH_IPA_DEBUG("%s: No memory for rx_buf_mem_va\n", __func__);

		goto free_rx_buf_mem_va;

	}



	veth_emac_mem->rx_buff_pool_base[0] = veth_emac_mem->rx_buf_mem_paddr;



	for (i = 0; i < VETH_RX_DESC_CNT; i++) {

		veth_emac_mem->rx_buff_pool_base[i] =

			veth_emac_mem->rx_buff_pool_base[0] +

			i*VETH_ETH_FRAME_LEN_IPA;

		VETH_IPA_DEBUG(

			"%s: veth_emac_mem->rx_buff_pool_base[%d] 0x%x\n",

			__func__, i, veth_emac_mem->rx_buff_pool_base[i]);

	}



	veth_emac_mem->rx_buff_pool_base_pa = rx_buf_pool_paddr;



	return 0;



free_rx_buf_mem_va:

	dma_free_coherent(&pdata->pdev->dev,

		VETH_ETH_FRAME_LEN_IPA * VETH_RX_DESC_CNT,

		veth_emac_mem->rx_buf_mem_va,

		rx_buf_mem_paddr);

free_tx_buff_pool_base:

	dma_free_coherent(&pdata->pdev->dev,

		sizeof(uint32_t) * VETH_TX_DESC_CNT,

		veth_emac_mem->tx_buff_pool_base,

		tx_buf_pool_paddr);

free_tx_buf_mem_va:

	dma_free_coherent(&pdata->pdev->dev,

		VETH_ETH_FRAME_LEN_IPA * VETH_TX_DESC_CNT,

		veth_emac_mem->tx_buf_mem_va,

		tx_buf_mem_paddr);

free_rx_desc_mem_va:

	dma_free_coherent(&pdata->pdev->dev,

		sizeof(struct s_RX_NORMAL_DESC) * VETH_RX_DESC_CNT,

		veth_emac_mem->rx_desc_mem_va,

		rx_desc_mem_paddr);

free_tx_desc_mem_va:

	dma_free_coherent(&pdata->pdev->dev,

		sizeof(struct s_TX_NORMAL_DESC) * VETH_TX_DESC_CNT,

		veth_emac_mem->tx_desc_mem_va,

		tx_desc_mem_paddr);

	return -ENOMEM;

}



int emac_ipa_hab_init(int mmid)

{

	uint32_t timeout_ms = 100;

	int ret = 0;

	int vc_id = 0;

	char *pdata_send;

	char *pdata_recv;



	pdata_send = kmalloc(veth_hab_pdata_size, GFP_KERNEL);

	if (!pdata_send) {

		VETH_IPA_ERROR("%s: failed to alloc pdata_send\n", __func__);

		return -ENOMEM;

	}



	pdata_recv = kmalloc(veth_hab_pdata_size, GFP_KERNEL);

	if (!pdata_recv) {

		kfree(pdata_send);

		VETH_IPA_ERROR("%s: failed to alloc pdata_recv\n", __func__);

		return -ENOMEM;

	}



	VETH_IPA_DEBUG("%s: Opening hab socket\n", __func__);

	ret = habmm_socket_open(&vc_id, mmid, timeout_ms, 0);



	if (ret) {

		VETH_IPA_ERROR("%s: hab open failed %d returned\n",

			__func__, ret);

		ret = -1;

		goto err;

	}

	VETH_IPA_DEBUG("%s: vc_id = %d\n", __func__, vc_id);



	/*Send the INIT*/

	memset(pdata_send, 1, veth_hab_pdata_size);

	VETH_IPA_DEBUG("%s: Sending INIT\n", __func__);

	ret = habmm_socket_send(vc_id, pdata_send, veth_hab_pdata_size, 0);



	if (ret) {

		VETH_IPA_ERROR("%s: Send failed %d returned\n", __func__, ret);

		ret = -1;

		goto err;

	}



	/*Receive ACK*/

	memset(pdata_recv, 1, veth_hab_pdata_size);

	VETH_IPA_DEBUG("%s: Receiving ACK\n", __func__);

	ret = habmm_socket_recv(vc_id, pdata_recv, &veth_hab_pdata_size, 0, 0);



	if (ret) {

		VETH_IPA_ERROR("%s: receive failed! ret %d, recv size %d\n",

			__func__, ret, veth_hab_pdata_size);

		ret = -1;

		goto err;

	}



	/*Send INITACK*/

	memset(pdata_send, 1, veth_hab_pdata_size);

	VETH_IPA_DEBUG("%s: INIT ACK\n", __func__);

	ret = habmm_socket_send(vc_id, pdata_send, veth_hab_pdata_size, 0);



	if (ret) {

		VETH_IPA_ERROR("%s: Send failed failed %d returned\n",

			__func__, ret);

		ret = -1;

		goto err;

	}



	return vc_id;

err:

	kfree(pdata_send);

	kfree(pdata_recv);

	if (vc_id > 0)

		habmm_socket_close(vc_id);

	return ret;

}



int emac_ipa_hab_export_tx_desc(

	int vc_id, struct veth_emac_export_mem *veth_emac_mem)

{

	uint32_t exp_id = 0;

	int ret = 0;

	char *pdata_send;

	char *pdata_recv;



	pdata_send = kmalloc(veth_hab_pdata_size, GFP_KERNEL);

	if (!pdata_send) {

		VETH_IPA_ERROR("%s: failed to alloc pdata_send\n", __func__);

		return -ENOMEM;

	}



	pdata_recv = kmalloc(veth_hab_pdata_size, GFP_KERNEL);

	if (!pdata_recv) {

		kfree(pdata_send);

		VETH_IPA_ERROR("%s: failed to alloc pdata_recv\n", __func__);

		return -ENOMEM;

	}



	/*export the memory*/

	VETH_IPA_DEBUG("%s: Export TX desc memory TO VC_ID %d\n",

		__func__, vc_id);

	VETH_IPA_DEBUG("%s: veth_emac_mem->tx_desc_mem_va  %p\n",

		__func__, veth_emac_mem->tx_desc_mem_va);

	VETH_IPA_DEBUG("%s: size  %d\n",

		__func__, sizeof(struct s_TX_NORMAL_DESC) * VETH_TX_DESC_CNT);

	ret = habmm_export(vc_id,

		veth_emac_mem->tx_desc_mem_va,

		sizeof(struct s_TX_NORMAL_DESC) * VETH_TX_DESC_CNT,

		&exp_id, 0);



	if (ret) {

		VETH_IPA_ERROR("%s: Export failed %d returned, export id %d\n",

			__func__, ret, exp_id);

		ret = -1;

		goto err;

	}



	VETH_IPA_DEBUG("%s: Export memory location %p\n",

		__func__, veth_emac_mem->tx_desc_mem_va);



	/*Send the export ID*/

	VETH_IPA_DEBUG("%s: Send TX desc export memory %d\n",

		__func__, exp_id);

	ret = habmm_socket_send(vc_id, &exp_id, veth_hab_pdata_size, 0);



	if (ret) {

		VETH_IPA_ERROR("%s: Send failed failed %d returned\n",

			__func__, ret);

		ret = -1;

		goto err;

	}



	/*Receive ACK*/

	memset(pdata_recv, 0, veth_hab_pdata_size);

	ret = habmm_socket_recv(vc_id, pdata_recv, &veth_hab_pdata_size, 0, 0);



	if (ret) {

		VETH_IPA_ERROR("%s: Receive failed failed %d returned\n",

			__func__, ret);

		ret = -1;

		goto err;

	}



	kfree(pdata_send);

	kfree(pdata_recv);

	return ret;

err:

	kfree(pdata_send);

	kfree(pdata_recv);

	kfree(veth_emac_mem->tx_desc_mem_va);

	kfree(veth_emac_mem->rx_desc_mem_va);

	kfree(veth_emac_mem->tx_buf_mem_va);

	kfree(veth_emac_mem->rx_buf_mem_va);

	return ret;

}



int emac_ipa_hab_export_rx_desc(

	int vc_id, struct veth_emac_export_mem *veth_emac_mem)

{

	uint32_t exp_id = 0;

	int ret = 0;

	char *pdata_send;

	char *pdata_recv;



	pdata_send = kmalloc(veth_hab_pdata_size, GFP_KERNEL);

	if (!pdata_send) {

		VETH_IPA_ERROR("%s: failed to alloc pdata_send\n", __func__);

		return -ENOMEM;

	}



	pdata_recv = kmalloc(veth_hab_pdata_size, GFP_KERNEL);

	if (!pdata_recv) {

		kfree(pdata_send);

		VETH_IPA_ERROR("%s: failed to alloc pdata_recv\n", __func__);

		return -ENOMEM;

	}



	VETH_IPA_DEBUG("%s: Export RX desc memory TO VC_ID %d\n",

		__func__, vc_id);

	ret = habmm_export(vc_id,

		veth_emac_mem->rx_desc_mem_va,

		sizeof(struct s_RX_NORMAL_DESC) * VETH_RX_DESC_CNT,

		&exp_id,

		0);



	if (ret) {

		VETH_IPA_ERROR("%s: Export failed %d returned, export id %d\n",

			__func__, ret, exp_id);

		ret = -1;

		goto err;

	}



	VETH_IPA_DEBUG("%s: Export RX desc memory location %p\n",

		__func__, veth_emac_mem->rx_desc_mem_va);



	/*Send the export ID*/

	VETH_IPA_DEBUG("%s: Export RX desc memory %d\n", __func__, exp_id);

	ret = habmm_socket_send(vc_id, &exp_id, veth_hab_pdata_size, 0);



	if (ret) {

		VETH_IPA_ERROR("%s: Send failed failed %d returned\n",

			__func__, ret);

		ret = -1;

		goto err;

	}



	ret = habmm_socket_recv(vc_id, pdata_recv, &veth_hab_pdata_size, 0, 0);



	if (ret) {

		VETH_IPA_ERROR("%s: Receive failed failed %d returned\n",

			__func__, ret);

		ret = -1;

		goto err;

	}



	kfree(pdata_send);

	kfree(pdata_recv);

	return ret;



err:

	kfree(pdata_send);

	kfree(pdata_recv);

	kfree(veth_emac_mem->tx_desc_mem_va);

	kfree(veth_emac_mem->rx_desc_mem_va);

	kfree(veth_emac_mem->tx_buf_mem_va);

	kfree(veth_emac_mem->rx_buf_mem_va);

	return ret;

}



int emac_ipa_hab_export_tx_buf(

	int vc_id, struct veth_emac_export_mem *veth_emac_mem)

{

	uint32_t exp_id = 0;

	int ret = 0;

	char *pdata_send;

	char *pdata_recv;



	pdata_send = kmalloc(veth_hab_pdata_size, GFP_KERNEL);

	if (!pdata_send) {

		VETH_IPA_ERROR("%s: failed to alloc pdata_send\n", __func__);

		return -ENOMEM;

	}



	pdata_recv = kmalloc(veth_hab_pdata_size, GFP_KERNEL);

	if (!pdata_recv) {

		kfree(pdata_send);

		VETH_IPA_ERROR("%s: failed to alloc pdata_recv\n", __func__);

		return -ENOMEM;

	}



	VETH_IPA_DEBUG("%s: Export TX buf memory TO VC_ID %d\n",

		__func__, vc_id);

	ret = habmm_export(

		vc_id,

		veth_emac_mem->tx_buf_mem_va,

		VETH_ETH_FRAME_LEN_IPA * VETH_RX_DESC_CNT,

		&exp_id,

		0);



	if (ret) {

		VETH_IPA_ERROR("%s: Export failed %d returned, export id %d\n",

			__func__, ret, exp_id);

		ret = -1;

		goto err;

	}



	VETH_IPA_DEBUG("%s: Export TX buf memory location %p\n",

		__func__, veth_emac_mem->tx_buf_mem_va);



	/*Send the export ID*/

	VETH_IPA_DEBUG("%s: Send TX buf memory %d\n", __func__, exp_id);

	ret = habmm_socket_send(vc_id, &exp_id, veth_hab_pdata_size, 0);



	if (ret) {

		VETH_IPA_ERROR("%s: Send failed failed %d returned\n",

			__func__, ret);

		ret = -1;

		goto err;

	}



	ret = habmm_socket_recv(vc_id, pdata_recv, &veth_hab_pdata_size, 0, 0);



	if (ret) {

		VETH_IPA_ERROR("%s: Receive  failed failed %d returned\n",

			__func__, ret);

		ret = -1;

		goto err;

	}



	kfree(pdata_send);

	kfree(pdata_recv);

	return ret;



err:

	kfree(pdata_send);

	kfree(pdata_recv);

	kfree(veth_emac_mem->tx_desc_mem_va);

	kfree(veth_emac_mem->rx_desc_mem_va);

	kfree(veth_emac_mem->tx_buf_mem_va);

	kfree(veth_emac_mem->rx_buf_mem_va);

	return ret;

}





int emac_ipa_hab_export_rx_buf(

	int vc_id, struct veth_emac_export_mem *veth_emac_mem)

{

	int ret = 0;

	char *pdata_recv;

	uint32_t exp_id = 0;



	VETH_IPA_DEBUG("%s: Export RX buf memory TO VC_ID %d\n",

		__func__, vc_id);

	ret = habmm_export(vc_id,

		veth_emac_mem->rx_buf_mem_va,

		VETH_ETH_FRAME_LEN_IPA * VETH_RX_DESC_CNT,

		&exp_id,

		0);



	if (ret) {

		VETH_IPA_ERROR("%s: Export failed %d returned, export id %d\n",

			__func__, ret, exp_id);

		ret = -1

		;

		goto err;

	}



	VETH_IPA_DEBUG("%s: Export RX buf memory location %p\n",

		__func__, veth_emac_mem->rx_buf_mem_va);



	/*Send the export ID*/

	VETH_IPA_DEBUG("%s: Send TX buf memory %d\n", __func__, exp_id);

	ret = habmm_socket_send(vc_id, &exp_id, veth_hab_pdata_size, 0);



	if (ret) {

		VETH_IPA_ERROR("%s: Send failed failed %d returned\n",

			__func__, ret);

		ret = -1;

		goto err;

	}



	ret = habmm_socket_recv(vc_id, pdata_recv, &veth_hab_pdata_size, 0, 0);



	if (ret) {

		VETH_IPA_ERROR("%s: Receive  failed failed %d returned\n",

			__func__, ret);

		ret = -1;

		goto err;

	}



	return ret;



err:

	kfree(veth_emac_mem->tx_desc_mem_va);

	kfree(veth_emac_mem->rx_desc_mem_va);

	kfree(veth_emac_mem->tx_buf_mem_va);

	kfree(veth_emac_mem->rx_buf_mem_va);

	return ret;

}



int veth_emac_init(struct veth_emac_export_mem *veth_emac_mem)

{

	int ret = 0;

	int vc_id = 0;

	unsigned int mmid = HAB_MMID_CREATE(MM_MISC, MM_MISC_VM_HAB_MINOR_ID);



	/*Open the FD*/

	VETH_IPA_INFO("%s: %d\n", __func__, mmid);



	vc_id = emac_ipa_hab_init(mmid);

	if (vc_id < 0) {

		VETH_IPA_ERROR("%s: HAB init failed, returning error\n",

			__func__);

		return -EAGAIN;

	}



	VETH_IPA_DEBUG("%s: emac_ipa vc_id = %d\n", __func__, vc_id);

	VETH_IPA_DEBUG("%s: VETH_EMAC_MEM ptr = %p\n",

		__func__, veth_emac_mem);

	ret = emac_ipa_hab_export_tx_desc(vc_id, veth_emac_mem);



	if (ret < 0) {

		VETH_IPA_ERROR(

			"HAB export of TX desc mem failed, returning error");

		return -EAGAIN;

	}



	ret = emac_ipa_hab_export_rx_desc(vc_id, veth_emac_mem);



	if (ret < 0) {

		VETH_IPA_ERROR(

			"HAB export of RX desc mem failed, returning error");

		return -EAGAIN;

	}



	ret = emac_ipa_hab_export_tx_buf(vc_id, veth_emac_mem);



	if (ret < 0) {

		VETH_IPA_ERROR(

			"HAB export of TX buf mem failed, returning error");

		return -EAGAIN;

	}



	ret = emac_ipa_hab_export_rx_buf(vc_id, veth_emac_mem);



	if (ret < 0) {

		VETH_IPA_ERROR(

			"HAB export of RX buf mem failed, returning error");

		return -EAGAIN;

	}



	VETH_IPA_INFO("%s: Memory export complete\n", __func__);

	return 0;

}