[8/9] scsi: bht: tagqueue: Add the source files related to tagqueue transfer function

diff --git a/drivers/scsi/bht/tagqueue/tagqueue.c b/drivers/scsi/bht/tagqueue/tagqueue.c
new file mode 100644
index 000000000000..24ff0d2367db
--- /dev/null
+++ b/drivers/scsi/bht/tagqueue/tagqueue.c
@@ -0,0 +1,2517 @@ 
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2014 BHT Inc.
+ *
+ * File Name: tagqueue.c
+ *
+ * Abstract: handle tagqueue work flow
+ *
+ * Version: 1.00
+ *
+ * Author: Chuanjin
+ *
+ * Environment:	OS Independent
+ *
+ * History:
+ *
+ * 9/4/2014		Creation	Chuanjin
+ */
+
+#include "../include/basic.h"
+#include "../include/host.h"
+#include "../include/tqapi.h"
+#include "../include/cardapi.h"
+#include "../include/funcapi.h"
+#include "../include/reqapi.h"
+#include "../include/debug.h"
+#include "tq_trans_api.h"
+#include "../include/util.h"
+#include "../include/cmdhandler.h"
+#include "tq_util.h"
+#include "../include/hostapi.h"
+
+/*
+ *
+ * Function Name:  node_malloc
+ *
+ * Abstract:
+ *
+ *		get one node from tag queue node pool
+ *
+ * Input:
+ *
+ *		tag_queue_t *tq [in]: Pointer to the tag queue
+ *
+ * Output:
+ *
+ *		None.
+ *
+ * Return value: NULL means can't get one successful
+ *
+ * Notes:  must use node_mfree for release
+ *
+ * Caller:
+ *
+ */
+static node_t *node_malloc(tag_queue_t *tq)
+{
+	if (tq == NULL) {
+		DbgErr("%s tq NULL\n", __func__);
+		return NULL;
+	}
+	return node_list_get_one(&tq->node_pool_list);
+}
+
+/*
+ *
+ * Function Name:  node_mfree
+ *
+ * Abstract:
+ *
+ *		put  the node back to  tag queue node pool
+ *
+ * Input:
+ *
+ *		tag_queue_t *tq [in]: Pointer to the tag queue
+ *		node_t *node [nin] : the node which need free
+ *
+ * Output:
+ *
+ *		None.
+ *
+ * Return value:
+ *
+ * Notes:
+ *
+ * Caller:
+ *
+ */
+static void node_mfree(tag_queue_t *tq, node_t *node)
+{
+	if (node)
+		node_list_put_one(&tq->node_pool_list, node);
+	else
+		DbgErr("%s node NULL\n", __func__);
+}
+
+/*
+ *
+ * Function Name:  node_pool_init
+ *
+ * Abstract:
+ *
+ *		init node pool
+ *
+ * Input:
+ *
+ *		tag_queue_t *tq [in]: Pointer to the tag queue
+ *		dma_desc_buf_t *dma_res [in]: system dma buffer resource
+ *
+ * Output:
+ *
+ *		None.
+ *
+ * Return value:
+ *
+ * Notes:  this call must call before tq_setup_dma_res() for use DMA resource
+ *
+ * Caller:
+ *
+ */
+static bool node_pool_init(PVOID pdx, tag_queue_t *tq,
+			   dma_desc_buf_t *dma_res, bool sdma_like)
+{
+	u32 i = 0;
+	dma_desc_buf_t dma;
+	node_t *node = 0;
+	bool ret = FALSE;
+
+	DbgInfo(MODULE_TQ_FLOW, FEATURE_DRIVER_INIT, NOT_TO_RAM,
+		"Enter %s sdma_like:%d\n", __func__, sdma_like);
+	/* check input */
+	if (tq == NULL || dma_res == NULL) {
+		ret = FALSE;
+		DbgErr("%s tq or dma NULL\n", __func__);
+		goto exit;
+	}
+
+	if ((dma_res->va == 0) || (dma_res->len == 0)) {
+		ret = FALSE;
+		DbgErr("%s dma va:%p len:%xh\n", __func__, dma_res->va,
+		       dma_res->len);
+		goto exit;
+	}
+
+	if (dma_res->len <= (tq->max_wq_req_size * MAX_GENERAL_DESC_TABLE_LEN)) {
+		ret = FALSE;
+		DbgErr("dma buf too small 0x%x <=(%x)\n", dma_res->len,
+		       tq->max_wq_req_size * MAX_GENERAL_DESC_TABLE_LEN);
+		goto exit;
+	}
+	/* init each node general desc buf */
+	dma = *dma_res;
+#if CFG_OS_LINUX
+	os_list_init(&tq->node_pool_list);
+#else
+	os_list_init(pdx, &tq->node_pool_list);
+#endif
+	for (i = 0; i < tq->max_wq_req_size; i++) {
+		node = &tq->node[i];
+		node->general_desc_tbl = dma;
+		node->general_desc_tbl.len = MAX_GENERAL_DESC_TABLE_LEN;
+		node->general_desc_tbl_img = node->general_desc_tbl;
+		resize_dma_buf(&dma, MAX_GENERAL_DESC_TABLE_LEN);
+		node_list_put_one(&tq->node_pool_list, node);
+		DbgInfo(MODULE_TQ_FLOW, FEATURE_DRIVER_INIT, NOT_TO_RAM,
+			"general desc tbl len %x\n",
+			node->general_desc_tbl.len);
+	}
+	ret = TRUE;
+	/* update dma_res for usage */
+	resize_dma_buf(dma_res,
+		       tq->max_wq_req_size * MAX_GENERAL_DESC_TABLE_LEN);
+
+	/* if sdma like mode enable, init each node SDMA like buf */
+	if (sdma_like == TRUE) {
+		/* dma buf align */
+		if (dma_align(dma_res, DMA_BUF_ALIGN_SIZE) == FALSE) {
+			DbgErr("%s sdma-like dma align failed\n", __func__);
+			ret = FALSE;
+			goto exit;
+		}
+		/* check buf enough */
+		if (dma_res->len <=
+		    tq->max_wq_req_size * MAX_SDMA_LIKE_DATA_SIZE) {
+			ret = FALSE;
+			DbgErr("dma resource too small 0x%x <(%x)\n",
+			       dma_res->len,
+			       tq->max_wq_req_size * MAX_SDMA_LIKE_DATA_SIZE);
+			goto exit;
+		}
+		/* init each node for sdma-like mode */
+		dma = *dma_res;
+		for (i = 0; i < tq->max_wq_req_size; i++) {
+			node = &tq->node[i];
+			node->data_tbl = dma;
+			node->data_tbl.len = MAX_SDMA_LIKE_DATA_SIZE;
+			node->data_tbl_img = node->data_tbl;
+			DbgInfo(MODULE_TQ_FLOW, FEATURE_DRIVER_INIT, NOT_TO_RAM,
+				"data tbl len %x\n", node->data_tbl.len);
+			if (FALSE ==
+			    resize_dma_buf(&dma, MAX_SDMA_LIKE_DATA_SIZE)) {
+				DbgErr
+				    ("node sdma-like data buf resize failed\n");
+				ret = FALSE;
+				goto exit;
+			}
+		}
+		/* update dma_res for usage */
+		resize_dma_buf(dma_res,
+			       tq->max_wq_req_size * MAX_SDMA_LIKE_DATA_SIZE);
+	}
+exit:
+	DbgInfo(MODULE_TQ_FLOW, FEATURE_DRIVER_INIT, NOT_TO_RAM,
+		"Exit %s ret:%d\n", __func__, ret);
+	return ret;
+}
+
+/*
+ *
+ * Function Name:  node_notify_complete
+ *
+ * Abstract:
+ *
+ *		complete one node by call upper layer callback
+ *
+ * Input:
+ *
+ *		bht_dev_ext_t *pdx [in]: Pointer to the bht adapter extension structure
+ *		node_t *pnode [in]: the node which need complete
+ *
+ * Output:
+ *
+ *		None.
+ *
+ * Return value:
+ *
+ * Notes:
+ *
+ * Caller:
+ *
+ */
+static int node_notify_complete(bht_dev_ext_t *pdx, node_t *pnode)
+{
+	srb_ext_t *psrb_ext = 0;
+
+	DbgInfo(MODULE_TQ_FLOW, FEATURE_RW_TRACE, NOT_TO_RAM, "Enter %s\n",
+		__func__);
+
+	if (pnode && pdx) {
+		psrb_ext = (srb_ext_t *) pnode->psrb_ext;
+		if (psrb_ext && psrb_ext->req.srb_done_cb) {
+			if (psrb_ext->req.result == REQ_RESULT_OK) {
+				if (pnode->sdma_like) {
+					if (DATA_DIR_IN ==
+					    psrb_ext->req.data_dir)
+						os_memcpy(psrb_ext->req.srb_buff,
+							  pnode->data_tbl.va,
+							  psrb_ext->req.tag_req_t.sec_cnt
+							  * SD_BLOCK_LEN);
+				}
+			}
+
+			psrb_ext->req.srb_done_cb(pdx, psrb_ext);
+		} else {
+			DbgInfo(MODULE_TQ_FLOW, FEATURE_RW_TRACE, NOT_TO_RAM,
+				"%s ext%p cb%p\n", __func__, psrb_ext,
+				psrb_ext->req.srb_done_cb);
+		}
+	} else {
+		DbgErr("%s NULL %p %p\n", __func__, pnode, pdx);
+	}
+
+	return 0;
+}
+
+/*
+ *
+ * Function Name:  node_mark_node_status
+ *
+ * Abstract:
+ *
+ *		the group for make node request result value
+ *
+ * Input:
+ *
+ *
+ *		node_t *pnode [in]: the node which need make request status
+ *
+ * Output:
+ *
+ *		None.
+ *
+ * Return value:
+ *
+ * Notes:
+ *
+ * Caller:
+ *
+ */
+static bool node_mark_node_status(node_t *pnode, void *ctx)
+{
+	bool ret = TRUE;
+	srb_ext_t *psrb_ext = 0;
+	e_req_result result = REQ_RESULT_ACCESS_ERR;
+
+	if (ctx == NULL) {
+		DbgErr("%s ctx null\n", __func__);
+		ret = FALSE;
+		goto exit;
+	}
+
+	if (pnode) {
+		psrb_ext = (srb_ext_t *) pnode->psrb_ext;
+		result = *((e_req_result *) ctx);
+		if (psrb_ext)
+			psrb_ext->req.result = result;
+		DbgInfo(MODULE_TQ_FLOW, FEATURE_RW_TRACE, NOT_TO_RAM,
+			"%s mark sta:%x\n", __func__, result);
+	}
+exit:
+	return ret;
+}
+
+/*
+ *
+ * Function Name:  node_list_get_one
+ *
+ * Abstract:
+ *
+ *		get one node from  the queue
+ *
+ * Input:
+ *
+ *		list_t *p [in]: Pointer to the list
+ *
+ *
+ * Output:
+ *
+ *		None.
+ *
+ * Return value:
+ *		node_t *, NULL means empty queue
+ *
+ * Notes:
+ *
+ * Caller:
+ *
+ */
+node_t *node_list_get_one(list_t *p)
+{
+	node_t *node = 0;
+	list_entry *plist = 0;
+
+	DbgInfo(MODULE_TQ_FLOW, FEATURE_FUNC_TRACE, NOT_TO_RAM, "Enter %s\n",
+		__func__);
+	/* check input */
+	if (p == NULL) {
+		DbgErr("%s:p NULL\n", __func__);
+		node = NULL;
+		goto exit;
+	}
+	/* get list entry */
+	plist = os_list_locked_remove_head(p);
+	if (plist == NULL) {
+		node = NULL;
+		goto exit;
+	}
+
+	/* sometime caller try to get empty queue, the counter no need sub if emtpy */
+	if (os_atomic_read(&p->cnt))
+		os_atomic_sub(&p->cnt, 1);
+	node = os_container_of(plist, node_t, list);
+exit:
+	DbgInfo(MODULE_TQ_FLOW, FEATURE_FUNC_TRACE, NOT_TO_RAM,
+		"Exit %s ret:%x\n", __func__, node);
+	return node;
+}
+
+/*
+ *
+ * Function Name:  node_list_head_put_one
+ *
+ * Abstract:
+ *
+ *		put the node to  the queue head
+ *
+ * Input:
+ *
+ *		list_t *p [in]: Pointer to the list
+ *		node_t *pnode [in] : the node to put
+ *
+ * Output:
+ *
+ *		None.
+ *
+ * Return value:
+ *
+ * Notes:
+ *
+ * Caller:
+ *
+ */
+void node_list_head_put_one(list_t *p, node_t *pnode)
+{
+	if (p == NULL) {
+		DbgErr("%s:p NULL\n", __func__);
+		return;
+	}
+	os_atomic_add(&p->cnt, 1);
+	os_list_locked_insert_head(p, &pnode->list);
+}
+
+/*
+ *
+ * Function Name:  node_list_put_one
+ *
+ * Abstract:
+ *
+ *		put the node to  the queue tail
+ *
+ * Input:
+ *
+ *		list_t *p [in]: Pointer to the list
+ *		node_t *pnode [in] : the node to put
+ *
+ * Output:
+ *
+ *		None.
+ *
+ * Return value:
+ *
+ * Notes:
+ *
+ * Caller:
+ *
+ */
+void node_list_put_one(list_t *p, node_t *pnode)
+{
+	if (p == NULL) {
+		DbgErr("%s:p NULL\n", __func__);
+		return;
+	}
+	os_atomic_add(&p->cnt, 1);
+	os_list_locked_insert_tail(p, &pnode->list);
+}
+
+/*
+ *
+ * Function Name:  node_list_get_cnt
+ *
+ * Abstract:
+ *
+ *		get the counter of the queue
+ *
+ * Input:
+ *
+ *		list_t *p [in]: Pointer to the list
+ *
+ * Output:
+ *
+ *		None.
+ *
+ * Return value: the counter value.
+ *
+ * Notes:
+ *
+ * Caller:
+ *
+ */
+u32 node_list_get_cnt(list_t *p)
+{
+	if (p == NULL) {
+		DbgErr("%s:p NULL\n", __func__);
+		return 0;
+	}
+	return os_atomic_read(&p->cnt);
+}
+
+/*
+ *
+ * Function Name:  req_queue_loop_ctx_ops
+ *
+ * Abstract:
+ *
+ *		do operation for all noed of  the queue.
+ *
+ * Input:
+ *
+ *		tag_queue_t *tq [in]: Pointer to the tag queue
+ *		req_queue_node_ops_cb cb [in]: the operation callback
+ *
+ * Output:
+ *
+ *		None.
+ *
+ * Return value:
+ *
+ * Notes:
+ *
+ * Caller:
+ *
+ */
+bool req_queue_loop_ctx_ops(req_queue_t *p, req_queue_node_ops_ctx_cb cb,
+			    void *ctx)
+{
+	bool ret = TRUE;
+	node_t *pnode = 0;
+	u32 i = 0, qsize = 0;
+
+	DbgInfo(MODULE_TQ_FLOW, FEATURE_RW_TRACE, NOT_TO_RAM, "Enter %s\n",
+		__func__);
+	/* check  input */
+	if ((cb == NULL) || (p == NULL)) {
+		DbgErr("% NULL\n", __func__);
+		ret = FALSE;
+		goto exit;
+	}
+	/* check empty queue */
+	if (node_list_get_cnt(&p->list) == 0) {
+		DbgInfo(MODULE_TQ_FLOW, FEATURE_RW_TRACE, NOT_TO_RAM,
+			"%s nobody in queue\n", __func__);
+		goto exit;
+	}
+
+	/* do  loops ops */
+	qsize = node_list_get_cnt(&p->list);
+	for (i = 0; i < qsize; i++) {
+		/* get one node */
+		pnode = node_list_get_one(&p->list);
+		if (pnode == NULL)
+			break;
+		if ((*cb) (pnode, ctx) == FALSE)
+			ret = FALSE;
+		/* put back to queue */
+		node_list_put_one(&p->list, pnode);
+	}
+	/* check cnt */
+	if (i != qsize)
+		DbgErr("%s:size no equal(%d-%d)\n", __func__, i, qsize);
+exit:
+	DbgInfo(MODULE_TQ_FLOW, FEATURE_RW_TRACE, NOT_TO_RAM, "Exit %s %d\n",
+		__func__, ret);
+	return ret;
+}
+
+/*
+ *
+ * Function Name:  req_queue_init
+ *
+ * Abstract:
+ *
+ *		init  the request queue
+ *
+ * Input:
+ *
+ *		req_queue_t *p [in]: the queue need init
+ *
+ *
+ * Output:
+ *
+ *		None.
+ *
+ * Return value:
+ *		TRUE: means ok
+ *
+ * Notes:
+ *
+ * Caller:
+ *
+ */
+static bool req_queue_init(PVOID pdx, req_queue_t *p, u32 id)
+{
+	if (p == NULL) {
+		DbgErr("%s:p NULL\n", __func__);
+		return FALSE;
+	}
+#if CFG_OS_LINUX
+	os_list_init(&p->list);
+#else
+	os_list_init(pdx, &p->list);
+#endif
+	p->id = id;
+	return TRUE;
+}
+
+/*
+ *
+ * Function Name:  req_queue_mark_node_status
+ *
+ * Abstract:
+ *
+ *		setup tag queue dma resource.
+ *
+ * Input:
+ *
+ *		req_queue_t *p [in]: Pointer to the request queue
+ *		e_req_result [in]: the mark request status value for queue
+ *
+ * Output:
+ *
+ *		None.
+ *
+ * Return value:
+ *
+ * Notes:
+ *
+ * Caller:
+ *
+ */
+static void req_queue_mark_node_status(req_queue_t *p, e_req_result result)
+{
+	req_queue_loop_ctx_ops(p, node_mark_node_status, &result);
+}
+
+static bool req_queue_move_node(req_queue_t *dq, req_queue_t *sq)
+{
+	bool ret = FALSE;
+	node_t *pnode = 0;
+
+	if ((dq == NULL) || (sq == NULL)) {
+		DbgErr("%s null\n", __func__);
+		ret = FALSE;
+		goto exit;
+	}
+
+	/* put request queue */
+	for (;;) {
+		pnode = node_list_get_one(&sq->list);
+		if (pnode == NULL)
+			break;
+		node_list_head_put_one(&dq->list, pnode);
+	}
+
+exit:
+	return ret;
+}
+
+bool req_queue_reverse_queue(PVOID pdx, req_queue_t *q)
+{
+	list_t tlist;
+	bool ret = TRUE;
+	u32 qsize = 0;
+	node_t *pnode = 0;
+
+	if (q == NULL) {
+		DbgErr("%s null\n", __func__);
+		ret = FALSE;
+		goto exit;
+	}
+	/* init temp list */
+#if CFG_OS_LINUX
+	os_list_init(&tlist);
+#else
+	os_list_init(pdx, &tlist);
+#endif
+
+	qsize = node_list_get_cnt(&q->list);
+
+	for (;;) {
+		pnode = node_list_get_one(&q->list);
+		if (pnode == NULL)
+			break;
+		node_list_head_put_one(&tlist, pnode);
+	}
+
+	for (;;) {
+		pnode = node_list_get_one(&tlist);
+		if (pnode == NULL)
+			break;
+		node_list_put_one(&q->list, pnode);
+	}
+
+	if (qsize != node_list_get_cnt(&q->list)) {
+		DbgErr("%s:size no equal(%d-%d)\n", __func__, qsize);
+		ret = FALSE;
+	}
+exit:
+	return ret;
+
+}
+
+static bool req_queue_move_order_node_at_head(PVOID pdx, req_queue_t *dq,
+					      req_queue_t *sq)
+{
+	bool ret = FALSE;
+	node_t *pnode = 0;
+
+	if ((dq == NULL) || (sq == NULL)) {
+		DbgErr("%s null\n", __func__);
+		ret = FALSE;
+		goto exit;
+	}
+
+	ret = req_queue_reverse_queue(pdx, sq);
+	if (ret == FALSE)
+		DbgErr("%s: reverse failed)\n", __func__);
+
+	/* put request queue */
+	for (;;) {
+		pnode = node_list_get_one(&sq->list);
+		if (pnode == NULL)
+			break;
+		node_list_head_put_one(&dq->list, pnode);
+	}
+
+exit:
+	return ret;
+}
+
+static e_tq_state work_queue_get_state(req_queue_t *rq)
+{
+	return rq->state;
+}
+
+/* only state machine API can change states, other only can get */
+static bool work_queue_state_machine(req_queue_t *rq, e_tq_state_evt evt)
+{
+	bool ret = TRUE;
+
+	DbgInfo(MODULE_TQ_FLOW, FEATURE_RW_TRACE, NOT_TO_RAM,
+		"Enter %s (%d)%x %x\n", __func__, rq->id, rq->state, evt);
+
+	switch (evt) {
+	case QUEUE_EVT_GET:
+		{
+			/* pre-condition */
+			if (rq->state == QUEUE_STATE_IDLE) {
+				rq->state = QUEUE_STATE_BUILD;
+			} else {
+				DbgErr("queue state not idle\n");
+				ret = FALSE;
+				goto exit;
+			}
+		}
+		break;
+	case QUEUE_EVT_BUILD_OK:
+		{
+			/* pre-condition */
+			if (rq->state == QUEUE_STATE_BUILD) {
+				rq->state = QUEUE_STATE_READY;
+			} else {
+				DbgErr("queue state not build\n");
+				ret = FALSE;
+				goto exit;
+			}
+		}
+		break;
+	case QUEUE_EVT_BUILD_FAILED:
+		{
+			/* pre-condition */
+			if (rq->state == QUEUE_STATE_BUILD) {
+				rq->state = QUEUE_STATE_IDLE;
+			} else {
+				DbgErr("queue state not build\n");
+				ret = FALSE;
+				goto exit;
+			}
+		}
+		break;
+	case QUEUE_EVT_ISSUE:
+		{
+
+			/* pre-condition */
+			if (rq->state == QUEUE_STATE_READY) {
+				rq->state = QUEUE_STATE_WAIT_CPL;
+			} else {
+				DbgErr("queue state not ready\n");
+				ret = FALSE;
+				goto exit;
+			}
+		}
+		break;
+	case QUEUE_EVT_DONE:
+		{
+
+			/* pre-condition */
+			if (rq->state == QUEUE_STATE_WAIT_CPL) {
+				rq->state = QUEUE_STATE_IDLE;
+			} else {
+				DbgErr("queue state not wait complete\n");
+				ret = FALSE;
+				goto exit;
+			}
+		}
+		break;
+	case QUEUE_EVT_FORCE_FAILED:
+		{
+			rq->state = QUEUE_STATE_WAIT_CPL;
+		}
+		break;
+	case QUEUE_EVT_INIT:
+		{
+			rq->state = QUEUE_STATE_IDLE;
+		}
+		break;
+	case QUEUE_EVT_ABORT:
+		{
+			/* pre-condition */
+			if (rq->state == QUEUE_STATE_READY
+			    || rq->state == QUEUE_STATE_WAIT_CPL) {
+				rq->state = QUEUE_STATE_IDLE;
+			} else {
+				DbgErr
+				    ("queue state not ready or wait complete\n");
+				ret = FALSE;
+				goto exit;
+			}
+		}
+		break;
+	default:
+		DbgErr("%s state error %d\n", __func__, rq->state);
+	}
+exit:
+
+	DbgInfo(MODULE_TQ_FLOW, FEATURE_RW_TRACE, NOT_TO_RAM,
+		"Exit %s (%d)%x %x\n", __func__, rq->id, rq->state, evt);
+	return ret;
+}
+
+/* side effect: dma will change size by use length */
+static bool work_queue_init_adma3_dma_res(req_queue_t *rq,
+					  dma_desc_buf_t *dma, u32 len)
+{
+	bool ret = FALSE;
+	/* check input */
+	if (dma->len < len) {
+		DbgErr("%s dma res len too small %x\n", __func__, dma->len);
+		ret = FALSE;
+		goto exit;
+	}
+	/* assign */
+	rq->adma3_integrate_tbl = *dma;
+	rq->adma3_integrate_tbl.len = len;
+	resize_dma_buf(dma, len);
+	DbgInfo(MODULE_TQ_DMA, FEATURE_DRIVER_INIT, NOT_TO_RAM,
+		"adma3 integrate tb len %x pa(%x)\n", len,
+		os_get_phy_addr32l(rq->adma3_integrate_tbl.pa));
+
+exit:
+	return ret;
+
+}
+
+typedef struct {
+	dma_desc_buf_t *desc_buf;
+	u32 len;
+} work_queue_init_adma3_arg;
+
+static bool work_queue_init_adma3_res_cb(PVOID pdx, req_queue_t *rq, void *ctx)
+{
+	bool ret = FALSE;
+	work_queue_init_adma3_arg *arg = ctx;
+	dma_desc_buf_t *dma = arg->desc_buf;
+
+	ret = work_queue_init_adma3_dma_res(rq, dma, arg->len);
+	if (ret == FALSE)
+		return FALSE;
+	else
+		return TRUE;
+}
+
+static bool work_queue_init_cb(PVOID pdx, req_queue_t *rq, void *ctx)
+{
+	tag_queue_t *tq = ctx;
+
+	req_queue_init(pdx, rq, tq->queue_id_seed++);
+	work_queue_state_machine(rq, QUEUE_EVT_INIT);
+	return FALSE;
+}
+
+/*
+ *	static bool work_queue_dump_state(PVOID pdx, req_queue_t *rq, void *ctx)
+ *	{
+ *		DbgErr("wq %d state(%d) cnt:%d\n", rq->id, rq->state,
+ *			node_list_get_cnt(&rq->list));
+ *		return FALSE;
+ *	}
+ */
+
+static bool work_queue_find_spec_state_queue_cb(PVOID pdx, req_queue_t *rq,
+						void *ctx)
+{
+	e_tq_state *pstate = (e_tq_state *) ctx;
+
+	if (ctx == NULL) {
+		DbgErr("%s null ctx\n", ctx);
+		return FALSE;
+	}
+	if (*pstate == work_queue_get_state(rq))
+		return TRUE;
+	else
+		return FALSE;
+}
+
+static bool work_queue_reset_state_cb(PVOID pdx, req_queue_t *rq, void *ctx)
+{
+	work_queue_state_machine(rq, QUEUE_EVT_INIT);
+	return FALSE;
+}
+
+typedef bool (*work_queue_ops_cb)(PVOID pdx, req_queue_t *rq, void *ctx);
+
+static req_queue_t *tq_work_queue_find_ops(void *pdx, tag_queue_t *ptq,
+					   work_queue_ops_cb pred, void *ctx)
+{
+	req_queue_t *rq = NULL, *retq = NULL;
+	u32 i = 0;
+
+	for (i = 0; i < TQ_WORK_QUEUE_SIZE; i++) {
+		rq = &ptq->work_queues[i];
+		if (pred((PVOID) pdx, rq, ctx) == TRUE) {
+			retq = rq;
+			break;
+		}
+	}
+	return retq;
+}
+
+/*
+ *
+ * Function Name:  tq_work_queue_init_adma3_res
+ *
+ * Abstract:
+ *
+ *		setup tag queue dma resource.
+ *
+ * Input:
+ *
+ *		bht_dev_ext_t *pdx [in]: Pointer to the bht adapter extension structure
+ *		dma_desc_buf_t *desc_buf [in]: the system DMA buffer resource
+ *
+ * Output:
+ *
+ *		None.
+ *
+ * Return value:
+ *
+ * Notes: the caller must set request status before call this function.
+ *
+ * Caller:
+ *
+ */
+
+static bool tq_work_queue_init_adma3_res(PVOID pdx, tag_queue_t *ptq,
+					 dma_desc_buf_t *desc_buf)
+{
+	bool ret = FALSE;
+
+	work_queue_init_adma3_arg arg;
+
+	DbgInfo(MODULE_TQ_FLOW, FEATURE_DRIVER_INIT, NOT_TO_RAM, "Enter %s\n",
+		__func__);
+	/* check input parameters */
+	if ((ptq == NULL) || (desc_buf == NULL)) {
+		ret = FALSE;
+		DbgErr("%s tq or dma NULL\n", __func__);
+		goto exit;
+	}
+	if ((desc_buf->va == 0) || (desc_buf->len == 0)) {
+		ret = FALSE;
+		DbgErr("%s dma va:%p len:%xh\n", __func__, desc_buf->va,
+		       desc_buf->len);
+		goto exit;
+	}
+
+	/* adma3 integrate table resource init */
+	arg.desc_buf = desc_buf;
+	arg.len =
+	    MAX_ADMA3_INTERGATE_TABLE_LEN_PER_QUEUE_PER_NODE *
+	    ptq->max_wq_req_size;
+	if (NULL !=
+	    tq_work_queue_find_ops(pdx, ptq, work_queue_init_adma3_res_cb,
+				   &arg)) {
+		DbgErr("%s amd3 wq init res failed\n", __func__);
+		ret = FALSE;
+		goto exit;
+	}
+
+	ret = TRUE;
+exit:
+	DbgInfo(MODULE_TQ_FLOW, FEATURE_DRIVER_INIT, NOT_TO_RAM,
+		"Exit %s ret:%d\n", __func__, ret);
+	return ret;
+
+}
+
+static bool dma_need_integrate_desc_buffer(u32 dma_mode)
+{
+	if ((dma_mode == CFG_TRANS_MODE_ADMA3_SDMA_LIKE) ||
+	    (dma_mode == CFG_TRANS_MODE_ADMA3) ||
+	    (dma_mode == CFG_TRANS_MODE_ADMA_MIX_SDMA_LIKE) ||
+	    (dma_mode == CFG_TRANS_MODE_ADMA_MIX))
+		return TRUE;
+	else
+		return FALSE;
+
+}
+
+static bool tq_work_queue_init(PVOID pdx, tag_queue_t *tq,
+			       dma_desc_buf_t *desc_buf, u32 dma_mode)
+{
+	bool ret = TRUE;
+	/* init basic work queue */
+	tq_work_queue_find_ops(pdx, tq, work_queue_init_cb, tq);
+	/* ADMA3 integrate descriptor table res need */
+	if (dma_need_integrate_desc_buffer(dma_mode) == TRUE) {
+		ret = tq_work_queue_init_adma3_res(pdx, tq, desc_buf);
+		if (ret == FALSE)
+			DbgErr("%s dma setup failed\n", __func__);
+	}
+
+	return ret;
+}
+
+static bool tq_work_queue_reset_state(PVOID pdx, tag_queue_t *tq)
+{
+	bool ret = TRUE;
+	/* init basic work queue */
+	tq_work_queue_find_ops(pdx, tq, work_queue_reset_state_cb, 0);
+
+	return ret;
+}
+
+/*
+ *
+ * Function Name:   tq_work_queue_complete_cur_wq
+ *
+ * Abstract:
+ *
+ *		complete all requsts which in cur work queue.
+ *
+ * Input:
+ *
+ *		bht_dev_ext_t *pdx [in]: Pointer to the bht adapter extension structure
+ *
+ *
+ * Output:
+ *
+ *		None.
+ *
+ * Return value:
+ *
+ * Notes: the caller must set request status before call this function.
+ *
+ * Caller:
+ *
+ */
+static void tq_work_queue_complete_cur_wq(bht_dev_ext_t *pdx)
+{
+	tag_queue_t *ptq = &pdx->tag_queue;
+	req_queue_t *pwq = ptq->wq_cur;
+	node_t *pnode = 0;
+
+	if (pwq == NULL) {
+		DbgErr("%s wq cur is NULL\n", __func__);
+		goto exit;
+	}
+
+	DbgInfo(MODULE_TQ_FLOW, FEATURE_RW_TRACE, NOT_TO_RAM,
+		"Enter %s tq have(%d)\n", __func__,
+		os_atomic_read(&ptq->req_cnt));
+
+	if (pwq->state != QUEUE_STATE_WAIT_CPL) {
+		DbgInfo(MODULE_TQ_FLOW, FEATURE_RW_TRACE, NOT_TO_RAM,
+			"try to complete non-wait-cpl queue\n");
+	}
+
+	if (os_atomic_read(&ptq->req_cnt) == 0) {
+		DbgInfo(MODULE_TQ_FLOW, FEATURE_RW_TRACE, NOT_TO_RAM,
+			"try to complete empty queue\n");
+	}
+
+	for (;;) {
+		pnode = node_list_get_one(&pwq->list);
+
+		if (pnode == NULL) {
+			DbgInfo(MODULE_TQ_FLOW, FEATURE_RW_TRACE, NOT_TO_RAM,
+				"Exit %s tq have(%d)\n", __func__,
+				os_atomic_read(&ptq->req_cnt));
+			goto exit;
+		}
+
+		if (os_atomic_read(&ptq->req_cnt))
+			os_atomic_sub(&(ptq->req_cnt), 1);
+		else
+			DbgErr("tq complete req but cnt 0\n");
+		node_notify_complete(pdx, pnode);
+		/* free node memory to pool */
+		node_mfree(ptq, pnode);
+	}
+exit:
+
+	DbgInfo(MODULE_TQ_FLOW, FEATURE_RW_TRACE, NOT_TO_RAM,
+		"Exit %s tq have(%d)\n", __func__,
+		os_atomic_read(&ptq->req_cnt));
+}
+
+/*
+ *
+ * Function Name:   tq_work_queue_move_update_node_status
+ *
+ * Abstract:
+ *
+ *		update request status in tag queue.
+ *
+ * Input:
+ *
+ *		bht_dev_ext_t *pdx [in]: Pointer to the bht adapter extension structure
+ *		e_req_result req_status [in]: the complete status
+ *		bool queue_select_all [in]:  select all request or just work queue
+ *
+ * Output:
+ *
+ *		None.
+ *
+ * Return value:
+ *
+ * Notes:
+ *
+ * Caller:
+ *
+ */
+
+static bool tq_work_queue_move_node_to_cur_wq_cb(PVOID pdx, req_queue_t *rq,
+						 void *ctx)
+{
+	tag_queue_t *tq = (tag_queue_t *) ctx;
+
+	if (tq->wq_cur == NULL) {
+		DbgErr("%s cur wq null\n", __func__);
+		goto exit;
+	}
+	if (tq->wq_cur != rq) {
+		if (work_queue_get_state(rq) == QUEUE_STATE_READY) {
+			req_queue_move_node(tq->wq_cur, rq);
+			/* update queue state to idle */
+			work_queue_state_machine(rq, QUEUE_EVT_ABORT);
+		}
+	}
+
+exit:
+
+	return FALSE;
+}
+
+/*
+ *
+ * Function Name:   tq_work_queue_thread_io_done
+ *
+ * Abstract:
+ *
+ *		a wapper function for complete request.
+ *
+ * Input:
+ *
+ *		bht_dev_ext_t *pdx [in]: Pointer to the bht adapter extension structure
+ * Output:
+ *
+ *		None.
+ *
+ * Return value:
+ *
+ * Notes:
+ *
+ * Caller:
+ *
+ */
+static void tq_work_queue_thread_io_done(void *p)
+{
+	tq_work_queue_complete_cur_wq(p);
+}
+
+/*
+ *	static void tq_work_queue_dump_state(PVOID pdx, tag_queue_t *tq)
+ *	{
+ *		if (tq->wq_cur)
+ *			DbgErr("wq cur (%d)\n", tq->wq_cur->id, tq->wq_cur->state);
+ *		tq_work_queue_find_ops(pdx, tq, work_queue_dump_state, 0);
+ *	}
+ */
+
+static bool tq_work_queue_rollback_node_cb(PVOID pdx, req_queue_t *rq,
+					   void *ctx)
+{
+	tag_queue_t *tq = (tag_queue_t *) ctx;
+
+	req_queue_move_node(&tq->req_queue, rq);
+	/* loop all */
+	return FALSE;
+}
+
+static void tq_work_queue_rollback_all_node(PVOID pdx, tag_queue_t *tq)
+{
+	tq_work_queue_find_ops(pdx, tq, tq_work_queue_rollback_node_cb, tq);
+
+}
+
+static void tq_all_queue_move_node_to_cur_wq(bht_dev_ext_t *pdx)
+{
+	tag_queue_t *ptq = &pdx->tag_queue;
+
+	DbgInfo(MODULE_TQ_FLOW, FEATURE_RW_TRACE, NOT_TO_RAM, "Enter %s\n",
+		__func__);
+
+	/* check cur wq */
+	if (ptq->wq_cur == NULL) {
+		DbgErr("%s wq cur is NULL\n", __func__);
+		goto exit;
+	}
+
+	/* put request queue io to cur_wq */
+	req_queue_move_node(ptq->wq_cur, &ptq->req_queue);
+
+	/* put left queue io to cur wq */
+	tq_work_queue_find_ops((PVOID) pdx, ptq,
+			       tq_work_queue_move_node_to_cur_wq_cb, ptq);
+
+exit:
+	DbgInfo(MODULE_TQ_FLOW, FEATURE_RW_TRACE, NOT_TO_RAM, "Exit %s\n",
+		__func__);
+}
+
+/*
+ *
+ * Function Name:   tq_thread_failed_queue
+ *
+ * Abstract:
+ *
+ *		tag queue use this function for complete request in thread context.
+ *
+ * Input:
+ *
+ *		bht_dev_ext_t *pdx [in]: Pointer to the bht adapter extension structure
+ *		e_req_result req_status [in]: the complete status
+ *		bool queue_select_all [in]:  select all request or just work queue
+ * Output:
+ *
+ *		None.
+ *
+ * Return value:
+ *
+ * Notes:
+ *
+ * Caller:
+ *
+ */
+
+static void tq_thread_failed_queue(bht_dev_ext_t *pdx, e_req_result req_status,
+				   bool queue_select_all)
+{
+	tag_queue_t *ptq = &pdx->tag_queue;
+
+	DbgInfo(MODULE_TQ_FLOW, FEATURE_RW_TRACE, NOT_TO_RAM,
+		"Enter %s sta:%d select:%d\n", __func__, req_status,
+		queue_select_all);
+	/* check cur wq */
+	if (ptq->wq_cur == NULL) {
+		DbgErr("%s wq cur is NULL, so force assign a cur wq\n",
+		       __func__);
+		ptq->wq_cur = &ptq->work_queues[0];
+	}
+	if (queue_select_all == TRUE)
+		tq_all_queue_move_node_to_cur_wq(pdx);
+
+	/* mark  status */
+	req_queue_mark_node_status(ptq->wq_cur, req_status);
+
+	/* check status */
+	work_queue_state_machine(ptq->wq_cur, QUEUE_EVT_FORCE_FAILED);
+
+	/* check empty */
+	if (node_list_get_cnt(&ptq->wq_cur->list) != 0) {
+		DbgInfo(MODULE_TQ_FLOW, FEATURE_RW_TRACE, NOT_TO_RAM, "%s %d\n",
+			__func__, ptq->req_cnt);
+		/* complete node to OS */
+		thread_exec_high_prio_job(pdx, tq_work_queue_thread_io_done,
+					  pdx);
+	} else {
+		DbgInfo(MODULE_TQ_FLOW, FEATURE_RW_TRACE, NOT_TO_RAM,
+			"%s empty %d\n", __func__, ptq->req_cnt);
+	}
+
+	/* update to idle */
+	work_queue_state_machine(ptq->wq_cur, QUEUE_EVT_DONE);
+
+	DbgInfo(MODULE_TQ_FLOW, FEATURE_RW_TRACE, NOT_TO_RAM, "Exit %s\n",
+		__func__);
+}
+
+bool tq_get_hardware_idle_state(tag_queue_t *ptq)
+{
+	return (ptq->hw_idle == TRUE) ? TRUE : FALSE;
+}
+
+void tq_set_hardware_idle_state(tag_queue_t *ptq, bool idle)
+{
+	ptq->hw_idle = idle;
+}
+
+bool tq_wait_stratege(req_queue_t *q)
+{
+	return TRUE;
+}
+
+/* get a idle trans ctx for next build */
+static req_queue_t *tq_trans_ctx_get_spec_one(PVOID pdx, tag_queue_t *ptq,
+					      e_tq_state sta)
+{
+	req_queue_t *rq = NULL;
+
+	rq = tq_work_queue_find_ops(pdx, ptq,
+				    work_queue_find_spec_state_queue_cb, &sta);
+
+	return rq;
+}
+
+static req_queue_t *tq_trans_ctx_get_idle_one(PVOID pdx, tag_queue_t *ptq)
+{
+	req_queue_t *rq = NULL;
+
+	rq = tq_trans_ctx_get_spec_one(pdx, ptq, QUEUE_STATE_IDLE);
+	if (rq != NULL)
+		work_queue_state_machine(rq, QUEUE_EVT_GET);
+	return rq;
+}
+
+static req_queue_t *tq_trans_ctx_get_ready_one(PVOID pdx, tag_queue_t *ptq)
+{
+	req_queue_t *rq = NULL;
+
+	rq = tq_trans_ctx_get_spec_one(pdx, ptq, QUEUE_STATE_READY);
+	return rq;
+}
+
+static e_build_ctx_result tq_trans_ctx_build_only(bht_dev_ext_t *pdx,
+						  tag_queue_t *ptq,
+						  req_queue_t *build_queue)
+{
+	node_t *pnode = 0;
+	u32 i = 0;
+	e_build_ctx_result ret = TQ_BUILD_IO_ERROR;
+	/* when build ctx maybe host transfer data for current queue */
+	ptq->wq_build = build_queue;
+	/* check */
+	if (work_queue_get_state(build_queue) != QUEUE_STATE_BUILD) {
+		DbgErr("TQ queue state error\n");
+		ret = TQ_BUILD_IO_ERROR;
+		goto exit;
+	}
+
+	/* 1. init context one transfer. */
+	if (ptq->ops.init_io) {
+		if (ptq->ops.init_io(pdx) == FALSE) {
+			DbgErr("Tag Queue InitIo failed\n");
+			ret = TQ_BUILD_IO_ERROR;
+			goto exit;
+		}
+	}
+	/* 2. build IOs context stage */
+
+	for (i = 0; i < ptq->max_build_limit; i++) {
+		/* 2.1 get one node from request queue list */
+		pnode = node_list_get_one(&ptq->req_queue.list);
+		if (pnode == NULL) {
+			if (i == 0) {
+				DbgInfo(MODULE_TQ_FLOW, FEATURE_RW_TRACE,
+					NOT_TO_RAM,
+					"no request in request queue\n");
+				/* can't got any node, so exit. */
+				ret = TQ_BUILD_IO_EMPTY;
+				goto exit;
+			}
+			/* can't fetch anything more node, so goto issue stage. */
+			break;
+		}
+		/* 2.2 build one IO context for the node */
+		/* prebuild io */
+		if (ptq->ops.prebuild_io) {
+			if (ptq->ops.prebuild_io(pdx, pnode) == FALSE)
+				goto build_error_handle;
+		}
+
+		if (ptq->ops.build_io) {
+
+			if (ptq->ops.build_io(pdx, pnode) == FALSE) {
+				/*
+				 * put this node backto request queue.
+				 * 1.for ADMA2 merge case:no the continuous SRB
+				 * 2.for ADMA3 maybe no enough buf resource,so must put it back
+				 */
+build_error_handle:
+				node_list_head_put_one(&ptq->req_queue.list,
+						       pnode);
+				/* check empty condition */
+				if (node_list_get_cnt(&build_queue->list) == 0) {
+					DbgErr
+					    ("Tag Queue transfer queue empty\n");
+					/* abort */
+					ret = TQ_BUILD_IO_ERROR;
+					goto exit;
+				}
+				/* goto issue stage */
+				break;
+			}
+		}
+		node_list_put_one(&build_queue->list, pnode);
+
+		/* 2.3 TQ policy need break. */
+		if (tag_queue_policy_break(pdx) == TRUE) {
+			DbgInfo(MODULE_TQ_FLOW, FEATURE_RW_TRACE, NOT_TO_RAM,
+				"%s TQ policy break\n", __func__);
+			break;
+		}
+		/* hardware idle */
+		if (tq_get_hardware_idle_state(ptq) == TRUE) {
+			DbgInfo(MODULE_TQ_FLOW, FEATURE_RW_TRACE, NOT_TO_RAM,
+				"%s HW idle break\n", __func__);
+			break;
+		}
+	}
+
+	ret = TQ_BUILD_IO_OK;
+exit:
+	return ret;
+}
+
+static e_build_ctx_result tq_trans_ctx_build(bht_dev_ext_t *pdx,
+					     tag_queue_t *ptq,
+					     req_queue_t *build_queue)
+{
+	e_build_ctx_result ret = TQ_BUILD_IO_ERROR;
+	/* build */
+	ret = tq_trans_ctx_build_only(pdx, ptq, build_queue);
+	/* update state */
+	if (ret == TQ_BUILD_IO_OK)
+		work_queue_state_machine(build_queue, QUEUE_EVT_BUILD_OK);
+	else
+		work_queue_state_machine(build_queue, QUEUE_EVT_BUILD_FAILED);
+	return ret;
+}
+
+static bool tq_trans_ctx_rebuild(bht_dev_ext_t *pdx, tag_queue_t *tq)
+{
+	bool ret = FALSE;
+
+	/* put all build ios back to request queue */
+	req_queue_move_order_node_at_head((PVOID) pdx, &tq->req_queue,
+					  tq->wq_cur);
+	work_queue_state_machine(tq->wq_cur, QUEUE_EVT_ABORT);
+	/* get idle ctx */
+	tq->wq_cur = tq_trans_ctx_get_idle_one((PVOID) pdx, tq);
+	if (tq->wq_cur == NULL) {
+		ret = FALSE;
+		DbgErr("%s null wq_cur\n", __func__);
+		goto exit;
+	}
+	/* rebuild ctx */
+	if (tq_trans_ctx_build(pdx, tq, tq->wq_cur) != TQ_BUILD_IO_OK) {
+		/* empty request queue or build failed */
+		ret = FALSE;
+		DbgErr("%s build failed\n", __func__);
+		goto exit;
+	}
+	/* update */
+	work_queue_state_machine(tq->wq_cur, QUEUE_EVT_ISSUE);
+	ret = TRUE;
+exit:
+	return ret;
+}
+
+static bool tq_trans_ctx_rebuild_node_cb(node_t *pnode, void *ctx)
+{
+	bool ret = TRUE;
+	bht_dev_ext_t *pdx = ctx;
+	tag_queue_t *ptq = &pdx->tag_queue;
+
+	/* build one IO context for the node */
+
+	if (ptq->ops.prebuild_io) {
+		if (ptq->ops.prebuild_io(pdx, pnode) == FALSE) {
+			ret = FALSE;
+			goto exit;
+		}
+	}
+
+	if (ptq->ops.build_io) {
+
+		if (ptq->ops.build_io(pdx, pnode) == FALSE) {
+			ret = FALSE;
+			goto exit;
+		}
+	}
+exit:
+	DbgInfo(MODULE_TQ_FLOW, FEATURE_RW_TRACE, NOT_TO_RAM, "Exit %s %d\n",
+		__func__, ret);
+	return ret;
+}
+
+static bool tq_trans_ctx_rebuild_each_node(bht_dev_ext_t *pdx,
+					   tag_queue_t *ptq,
+					   req_queue_t *build_queue)
+{
+	bool ret = TRUE;
+
+	ptq->wq_build = build_queue;
+
+	/* 1. init context one transfer. */
+	if (ptq->ops.init_io) {
+		if (ptq->ops.init_io(pdx) == FALSE) {
+			DbgErr("Tag Queue InitIo failed\n");
+			ret = FALSE;
+			goto exit;
+		}
+	}
+
+	ret =
+	    req_queue_loop_ctx_ops(ptq->wq_cur, tq_trans_ctx_rebuild_node_cb,
+				   pdx);
+
+	DbgInfo(MODULE_TQ_FLOW, FEATURE_RW_TRACE, NOT_TO_RAM, "Exit %s %d\n",
+		__func__, ret);
+
+exit:
+	return ret;
+}
+
+bool tq_dma_mode_switch(bht_dev_ext_t *pdx, tag_queue_t *tq)
+{
+	bool ret = FALSE;
+	u32 target_dma_mode = os_atomic_read(&tq->target_dma_mode);
+
+	DbgInfo(MODULE_TQ_FLOW, FEATURE_RW_TRACE, NOT_TO_RAM, "Enter %s\n",
+		__func__);
+	/* need switch */
+	if (target_dma_mode == tq->cur_dma_mode) {
+		ret = TRUE;
+		goto exit;
+	}
+
+	DbgInfo(MODULE_TQ_FLOW, FEATURE_RW_TRACE, NOT_TO_RAM,
+		" %s switch(%d,%d)\n", __func__, target_dma_mode,
+		tq->cur_dma_mode);
+	/* call each mode clean ops */
+	if (tq->ops.unload) {
+		ret = tq->ops.unload(pdx);
+		/* need error recovery,switch failed. */
+		if (ret == FALSE) {
+			DbgErr("%s unload failed\n", __func__);
+			ret = FALSE;
+			goto exit;
+		}
+	}
+	/* config new mode */
+	os_memset(&tq->ops, 0, sizeof(transfer_cb_t));
+	switch (target_dma_mode) {
+	case CFG_TRANS_MODE_ADMA3:
+		tq_adma3_mode_init(&tq->ops);
+		break;
+	case CFG_TRANS_MODE_ADMA2:
+		tq_adma2_inf_mode_init(&tq->ops);
+		break;
+	case CFG_TRANS_MODE_ADMA2_SDMA_LIKE:
+		tq_adma2_inf_sdmalike_mode_init(&tq->ops);
+		break;
+	case CFG_TRANS_MODE_ADMA3_SDMA_LIKE:
+		tq_adma3_sdmalike_mode_init(&tq->ops);
+		break;
+	case CFG_TRANS_MODE_ADMA2_ONLY:
+		host_transfer_init(&pdx->host, FALSE, TRUE);
+		tq_adma2_mode_init(&tq->ops);
+		break;
+	case CFG_TRANS_MODE_ADMA2_ONLY_SDMA_LIKE:
+		tq_adma2_sdmalike_mode_init(&tq->ops);
+		break;
+	default:
+		DbgErr("error dma mode\n");
+	}
+	tq->cur_dma_mode = target_dma_mode;
+	/* rebuild io */
+	tq_trans_ctx_rebuild(pdx, tq);
+
+	ret = TRUE;
+exit:
+	DbgInfo(MODULE_TQ_FLOW, FEATURE_RW_TRACE, NOT_TO_RAM, "Exit %s\n",
+		__func__);
+	return ret;
+}
+
+static bool tq_dma_support_mix_mode(u32 dma_mode)
+{
+
+	if ((dma_mode == CFG_TRANS_MODE_ADMA_MIX) ||
+	    (dma_mode == CFG_TRANS_MODE_ADMA_MIX_SDMA_LIKE))
+		return TRUE;
+	else
+		return FALSE;
+
+}
+
+u32 tq_issue_post_cb(void *p)
+{
+	bht_dev_ext_t *pdx = p;
+	tag_queue_t *ptq = &pdx->tag_queue;
+	req_queue_t *build_queue = NULL;
+
+	DbgInfo(MODULE_TQ_FLOW, FEATURE_RW_TRACE, NOT_TO_RAM, "Enter %s\n",
+		__func__);
+
+	tq_wait_stratege(ptq->wq_cur);
+
+	/* try build it now */
+	if (tq_trans_ctx_get_ready_one((PVOID) pdx, ptq) == NULL) {
+		build_queue = tq_trans_ctx_get_idle_one((PVOID) pdx, ptq);
+		if (build_queue != NULL) {
+			if (ptq->wq_cur == build_queue) {
+				DbgErr("%s wq_cur == build_queue\n",
+				       __func__);
+				goto exit;
+
+			}
+			if (TQ_BUILD_IO_OK !=
+			    tq_trans_ctx_build(pdx, ptq, build_queue)) {
+				DbgInfo(MODULE_TQ_FLOW, FEATURE_RW_TRACE,
+					NOT_TO_RAM, "not build trans ctx\n");
+			} else {
+				DbgInfo(MODULE_TQ_FLOW, FEATURE_RW_TRACE,
+					NOT_TO_RAM, "build trans ctx ok\n");
+			}
+		}
+	}
+exit:
+	DbgInfo(MODULE_TQ_FLOW, FEATURE_RW_TRACE, NOT_TO_RAM, "Exit %s\n",
+		__func__);
+	return 0;
+}
+
+/*
+ *
+ * Function Name:  tag_queue_rw_data_issue_stage
+ *
+ * Abstract:
+ *
+ *		issue cmd for tag_queue_rw_data()
+ *
+ * Input:
+ *
+ *		bht_dev_ext_t *pdx [in]: Pointer to the bht adapter extension structure
+ * Output:
+ *
+ *		None.
+ *
+ * Return value:
+ *
+ * Notes:
+ *
+ * Caller: only for tag_queue_rw_data()
+ *
+ */
+
+e_req_result tag_queue_rw_data_issue_stage(bht_dev_ext_t *pdx,
+					   tag_queue_t *ptq, sd_card_t *card,
+					   host_cmd_req_t *irq)
+{
+	/* cfg retry times */
+	int retry = TQ_MAX_RECOVERY_ERROR_RETRY_TIMES;
+	sd_command_t *sd_cmd = 0;
+	e_req_result ret = REQ_RESULT_OK;
+	bool card_poweroff_flg = TRUE;
+
+	DbgInfo(MODULE_TQ_FLOW, FEATURE_RW_TRACE, NOT_TO_RAM, "Enter %s\n",
+		__func__);
+
+	/* check cur wq */
+	if (ptq->wq_cur == NULL) {
+		ret = REQ_RESULT_ABORT;
+		DbgErr("%s wq cur is NULL, so exit\n", __func__);
+		goto exit;
+	}
+
+	/* update */
+	work_queue_state_machine(ptq->wq_cur, QUEUE_EVT_ISSUE);
+
+	os_set_dev_busy(pdx);
+	card_poweroff_flg = card_is_poweroff(&pdx->card);
+	ret = thread_wakeup_card(pdx);
+	if (ret != REQ_RESULT_OK) {
+		DbgErr("Tag Queue wakeup card failed\n");
+		tq_thread_failed_queue(pdx, REQ_RESULT_ACCESS_ERR, TRUE);
+		ret = REQ_RESULT_ACCESS_ERR;
+		goto exit;
+	}
+
+	if (card_poweroff_flg == TRUE) {
+		/*
+		 * for ADMA3 case, if card poweroff, adma3 dma ctx may invalid,
+		 * a) card init may degrade from uhs2 to uhs1.
+		 * b) card power, the cmd descriptor may also build wrong.
+		 */
+		if (ptq->ops.poweroff_need_rebuild) {
+			if (ptq->ops.poweroff_need_rebuild(pdx) == TRUE) {
+				/* maybe card mode change during error recovery */
+				if (FALSE ==
+				    tq_trans_ctx_rebuild_each_node(pdx, ptq,
+								   ptq->wq_cur)) {
+					DbgErr("Tag Queue rebuild failed\n");
+					ret = REQ_RESULT_ACCESS_ERR;
+					tq_thread_failed_queue(pdx,
+							       REQ_RESULT_ACCESS_ERR,
+							       TRUE);
+					goto exit;
+				}
+			}
+		}
+	}
+
+	if (func_thermal_control(card) == FALSE) {
+		if (card_recovery_flow(card, NULL) == FALSE) {
+			DbgErr("%s thremal control recover failed\n",
+			       __func__);
+			/* can't handle anything */
+			tq_thread_failed_queue(pdx, REQ_RESULT_ACCESS_ERR,
+					       TRUE);
+			ret = REQ_RESULT_ACCESS_ERR;
+			goto exit;
+		}
+	}
+
+	/* 3.1 issue transfer */
+
+	if (TRUE ==
+	    tq_dma_support_mix_mode(pdx->cfg->host_item.test_dma_mode_setting.dma_mode)) {
+		ret = tq_dma_mode_switch(pdx, ptq);
+		if (ret == FALSE)
+			goto error_handle;
+	}
+tq_trans_again:
+	if (os_thread_is_freeze(pdx) || card->card_type == CARD_ERROR) {
+		tq_thread_failed_queue(pdx, REQ_RESULT_ABORT, TRUE);
+		ret = REQ_RESULT_ABORT;
+		DbgInfo(MODULE_TQ_FLOW, FEATURE_RW_TRACE, NOT_TO_RAM,
+			"%s card err or thread freeze\n", __func__);
+		goto final;
+	}
+
+	if (card->info.scr.sd_spec <= SCR_SPEC_VER_1) {
+		/*
+		 * For SD1.1/SD1.0 card, need add delay between two
+		 * read/write command when using infinite transfer mode
+		 */
+		os_udelay(100);
+	}
+
+	/* hardware idle not sync with queue status */
+	tq_set_hardware_idle_state(&pdx->tag_queue, FALSE);
+	retry--;
+	if (ptq->ops.issue_transfer(pdx) == FALSE) {
+		/* error recovery flow */
+error_handle:
+		DbgErr("Error Recovery for ReadWrite\n");
+		sd_cmd = irq->private;
+		ret = card_recovery_flow(card, sd_cmd);
+		if (ret == REQ_RESULT_OK) {
+			if (retry > 0) {
+				DbgInfo(MODULE_TQ_FLOW, FEATURE_RW_TRACE,
+					NOT_TO_RAM, "%s TQ retry %d\n",
+					__func__, retry);
+				/* maybe card mode change during error recovery */
+				if (FALSE ==
+				    tq_trans_ctx_rebuild_each_node(pdx, ptq,
+								   ptq->wq_cur)) {
+					DbgErr("Tag Queue rebuild failed\n");
+					ret = REQ_RESULT_ACCESS_ERR;
+					tq_thread_failed_queue(pdx,
+							       REQ_RESULT_ACCESS_ERR,
+							       TRUE);
+					goto exit;
+				} else
+					goto tq_trans_again;
+			} else {
+				DbgErr
+				    ("Tag Queue Error Recovery retry exceed\n");
+
+				/*
+				 * set card error after retry fail.
+				 * to avoid process one more tag io that already in queue.
+				 */
+				pdx->card.card_type = CARD_ERROR;
+
+				tq_thread_failed_queue(pdx,
+						       REQ_RESULT_ACCESS_ERR,
+						       FALSE);
+				ret = REQ_RESULT_ACCESS_ERR;
+				goto exit;
+			}
+		} else {
+			DbgErr("Tag Queue Error card Recovery failed\n");
+			tq_thread_failed_queue(pdx, ret, TRUE);
+			goto exit;
+		}
+	}
+	tq_set_hardware_idle_state(&pdx->tag_queue, TRUE);
+	/* queue final idle */
+	work_queue_state_machine(ptq->wq_cur, QUEUE_EVT_DONE);
+
+exit:
+	os_set_dev_idle(pdx);
+final:
+
+	if (ptq->wq_cur->state != QUEUE_STATE_IDLE)
+		DbgErr("%s cur_wq state is not idle\n", __func__);
+	DbgInfo(MODULE_TQ_FLOW, FEATURE_RW_TRACE, NOT_TO_RAM,
+		"Exit %s ret=%x\n", __func__, ret);
+	return ret;
+}
+
+bool tq_work_queue_state_recovery(PVOID pdx, tag_queue_t *tq)
+{
+	bool ret = FALSE;
+
+	/* roll back all IOs to request queue, then reset TQ wq */
+
+	/* 1. rollback all IOs to request queue */
+	tq_work_queue_rollback_all_node(pdx, tq);
+	/* 2.reset TQ wq */
+	tq_work_queue_reset_state(pdx, tq);
+
+	return ret;
+}
+
+/*
+ *
+ * Function Name:  tag_queue_rw_data
+ *
+ * Abstract:
+ *
+ *		it handle tag queue read/write request work flow.
+ *
+ * Input:
+ *
+ *		bht_dev_ext_t *pdx [in]: Pointer to the bht adapter extension structure
+ * Output:
+ *
+ *		None.
+ *
+ * Return value:
+ *
+ * Notes:
+ *
+ * Caller: thread for complete TQ request
+ *
+ */
+e_req_result tag_queue_rw_data(bht_dev_ext_t *pdx)
+{
+	tag_queue_t *ptq = 0;
+	host_cmd_req_t *irq = 0;
+	e_req_result ret = REQ_RESULT_OK;
+	sd_card_t *card = 0;
+
+	DbgInfo(MODULE_TQ_FLOW, FEATURE_RW_TRACE, NOT_TO_RAM, "Enter %s\n",
+		__func__);
+	/* check input */
+	if (pdx == NULL) {
+		DbgErr("%s:pdx NULL\n", __func__);
+		/* can't handle anything */
+		ret = REQ_RESULT_ABORT;
+		goto exit;
+	}
+	/* init variable */
+	ptq = &pdx->tag_queue;
+	irq = &ptq->cmd_req;
+	card = &pdx->card;
+	/* check TQ status */
+	if (ptq->init_magic_number != TAG_QUEUE_INIT_MAGIC_NUMBER) {
+		DbgErr("%s TQ no init ok\n", __func__);
+		/* can't handle anything */
+		tq_thread_failed_queue(pdx, REQ_RESULT_ABORT, TRUE);
+		ret = REQ_RESULT_ABORT;
+		goto exit;
+	}
+
+	if (ptq->ops.issue_transfer == NULL) {
+		DbgErr("%s TQ no issue cb\n", __func__);
+		tq_thread_failed_queue(pdx, REQ_RESULT_ABORT, TRUE);
+		ret = REQ_RESULT_ABORT;
+		goto exit;
+	}
+
+	/* start jobs */
+	while (1) {
+		if (card->card_chg || card->card_present == FALSE) {
+			DbgErr("Tag Queue card not ready failed\n");
+			/* can't handle anything */
+			tq_thread_failed_queue(pdx, REQ_RESULT_NO_CARD, TRUE);
+			ret = REQ_RESULT_NO_CARD;
+			goto exit;
+		}
+
+		/* Thomas add based on UHS2 issue 11. */
+		if (card->card_type == CARD_ERROR) {
+			DbgErr("Tag Queue aborted for card error\n");
+
+			ret = REQ_RESULT_ACCESS_ERR;
+			goto exit;
+		}
+
+		ptq->wq_cur = tq_trans_ctx_get_ready_one((PVOID) pdx, ptq);
+		if (ptq->wq_cur == NULL) {
+			/* need build it now */
+			ptq->wq_cur =
+			    tq_trans_ctx_get_idle_one((PVOID) pdx, ptq);
+			if (ptq->wq_cur == NULL) {
+				/* impossible path(assert case),but need check */
+				DbgErr
+				    ("%s fatal error,failed to get free trans ctx\n",
+				     __func__);
+				tq_work_queue_state_recovery((PVOID) pdx, ptq);
+				ptq->wq_cur =
+				    tq_trans_ctx_get_idle_one((PVOID) pdx, ptq);
+
+				if (ptq->wq_cur == NULL) {
+					DbgErr
+					    ("%s recovery but still get null cur wq\n",
+					     __func__);
+					tq_thread_failed_queue(pdx,
+							       REQ_RESULT_ACCESS_ERR,
+							       TRUE);
+					ret = REQ_RESULT_ACCESS_ERR;
+					goto exit;
+				}
+
+			}
+			/* build ctx */
+			{
+				e_build_ctx_result build_ret =
+				    tq_trans_ctx_build(pdx, ptq, ptq->wq_cur);
+				switch (build_ret) {
+				case TQ_BUILD_IO_ERROR:
+					{
+						/* can't handle anything */
+						tq_thread_failed_queue(pdx,
+								       REQ_RESULT_ACCESS_ERR,
+								       TRUE);
+						/* empty request queue or build failed */
+						ret = REQ_RESULT_ACCESS_ERR;
+						goto exit;
+					}
+					break;
+				case TQ_BUILD_IO_OK:
+					break;
+				case TQ_BUILD_IO_EMPTY:
+					ret = REQ_RESULT_OK;
+					goto exit;
+					break;
+				default:
+					DbgErr("%s build state error\n");
+				}
+			}
+		}
+
+		/* ---------------issue stage--------------- */
+		ret = tag_queue_rw_data_issue_stage(pdx, ptq, card, irq);
+		if (ret != REQ_RESULT_OK) {
+			DbgInfo(MODULE_TQ_FLOW, FEATURE_RW_TRACE, NOT_TO_RAM,
+				"Exit %s ret=%x\n", __func__, ret);
+			goto exit;
+		}
+
+	}
+	ret = REQ_RESULT_OK;
+exit:
+	DbgInfo(MODULE_TQ_FLOW, FEATURE_RW_TRACE, NOT_TO_RAM, "Exit %s %d\n",
+		__func__, ret);
+	return ret;
+}
+
+/*
+ *
+ * Function Name: tq_add_request
+ *
+ * Abstract:
+ *
+ *		add one request to tag queue, and do prebuild callback if have.
+ *
+ * Input:
+ *
+ *		bht_dev_ext_t *pdx [in]: Pointer to the bht adapter extension structure
+ *		srb_ext* srb_ext [in]: Pointer to the request data structure.
+ * Output:
+ *
+ *		None.
+ *
+ * Return value:
+ *
+ *		REQ_RESULT_OK: tag queue have put this request successful in queue.
+ *		REQ_RESULT_QUEUE_BUSY:  tag queue is full, please retry late.
+ * Notes:
+ *
+ * Caller: StartIO. async add request to tq
+ *
+ */
+
+e_req_result tq_add_request(bht_dev_ext_t *pdx, srb_ext_t *srb_ext,
+			    sd_card_t *card)
+{
+	tag_queue_t *tq = 0;
+	node_t *pnode = 0;
+	e_req_result ret = 0;
+	u32 dma_mode;
+
+	DbgInfo(MODULE_TQ_FLOW, FEATURE_RW_TRACE, NOT_TO_RAM, "Enter %s\n",
+		__func__);
+	/* check */
+	if (pdx == NULL) {
+		ret = REQ_RESULT_ABORT;
+		DbgErr("%s null pdx\n", __func__);
+		goto exit;
+	}
+
+	tq = &pdx->tag_queue;
+	/* init done check */
+	if (tq->init_magic_number != TAG_QUEUE_INIT_MAGIC_NUMBER) {
+		DbgErr("%s TQ no init\n", __func__);
+		ret = REQ_RESULT_ABORT;
+		goto exit;
+	}
+
+	/* over size check */
+	if ((int)os_atomic_read(&tq->req_cnt) < ((int)tq->max_wq_req_size)) {
+		/* get one node_t */
+		pnode = node_malloc(tq);
+		if (pnode == NULL) {
+			DbgErr("%s node malloc failed\n", __func__);
+			ret = REQ_RESULT_QUEUE_BUSY;
+			goto exit;
+		}
+		/* bind srb_ext to node_t */
+		pnode->psrb_ext = srb_ext;
+		/* bind card to node */
+		pnode->card = card;
+
+		dma_mode = pdx->cfg->host_item.test_dma_mode_setting.dma_mode;
+#if CFG_OS_LINUX
+		if (cfg_dma_need_sdma_like_buffer(dma_mode) == TRUE)
+			tq_adma2_sdmalike_copy(pdx, pnode);
+#endif
+
+		/* put node to request queue & add cnt */
+		os_atomic_add(&(tq->req_cnt), 1);
+		DbgInfo(MODULE_TQ_FLOW, FEATURE_RW_TRACE, NOT_TO_RAM,
+			"%s,tq cnt:%x\n", __func__,
+			os_atomic_read(&tq->req_cnt));
+		node_list_put_one(&(tq->req_queue.list), pnode);
+
+#if CFG_OS_LINUX
+		os_set_event(&pdx->os, EVENT_TAG_IO);
+#else
+		os_set_event(pdx, &pdx->os, EVENT_TASK_OCCUR, EVENT_TAG_IO);
+#endif
+
+		if (TRUE ==
+		    tq_dma_support_mix_mode(pdx->cfg->host_item.test_dma_mode_setting.dma_mode)) {
+			tq_dma_decision_policy(tq, card, &srb_ext->req);
+		}
+
+		ret = REQ_RESULT_PENDING;
+		goto exit;
+	} else {
+		/* TQ full */
+		ret = REQ_RESULT_QUEUE_BUSY;
+		goto exit;
+	}
+exit:
+	DbgInfo(MODULE_TQ_FLOW, FEATURE_RW_TRACE, NOT_TO_RAM,
+		"Exit %s,ret=%x\n", __func__, ret);
+	return ret;
+
+}
+
+/*
+ *
+ * Function Name: tq_is_empty
+ *
+ * Abstract:
+ *
+ *		get tag queue running status.
+ *
+ * Input:
+ *
+ *		bht_dev_ext_t *pdx [in]: Pointer to the bht adapter extension structure
+ *
+ * Output:
+ *
+
+ * Return value:
+ *
+ *		TRUE: empty
+ *		FALSE: no empty
+ * Notes:
+ *
+ * IO_control case for corrently crash.
+ */
+
+bool tq_is_empty(bht_dev_ext_t *pdx)
+{
+	tag_queue_t *tq = 0;
+	bool ret = TRUE;
+
+	if (pdx == NULL) {
+		DbgErr("%s pdx null\n", __func__);
+		ret = FALSE;
+		goto exit;
+	}
+
+	tq = &pdx->tag_queue;
+
+	if (tq->init_magic_number != TAG_QUEUE_INIT_MAGIC_NUMBER) {
+		DbgErr("%s TQ no init\n", __func__);
+		ret = TRUE;
+		goto exit;
+	}
+
+	if (os_atomic_read(&tq->req_cnt))
+		ret = FALSE;
+exit:
+	return ret;
+}
+
+/*
+ *
+ * Function Name: tag_queue_dma_size_init
+ *
+ * Abstract:
+ *
+ *		try to get TQ cfg for DMA buffer size
+ *
+ * Input:
+ *
+ *		bht_dev_ext_t *pdx [in]: Pointer to the bht adapter extension structure
+ *
+ * Output:
+ *
+
+ * Return value:
+ *
+ *
+ * Notes:
+ *
+ * IO_control case for corrently crash.
+ */
+
+bool tag_queue_dma_size_init(bht_dev_ext_t *pdx, u32 buf_size)
+{
+	u32 max_req_numb = 0;
+	tag_queue_t *tq = &pdx->tag_queue;
+	u32 dma_mode = 0;
+	u32 cnt = 0;
+	u32 infinite_mode_enable = 0;
+	bool sdma_like_mode = FALSE;
+	u32 node_size = 0;
+	bool ret = FALSE;
+
+	DbgInfo(MODULE_TQ_FLOW, FEATURE_DRIVER_INIT, NOT_TO_RAM, "Enter %s\n",
+		__func__);
+
+	max_req_numb = pdx->cfg->host_item.test_tag_queue_capability.max_srb;
+	dma_mode = pdx->cfg->host_item.test_dma_mode_setting.dma_mode;
+	infinite_mode_enable =
+	    pdx->cfg->host_item.test_infinite_transfer_mode.enable_inf;
+
+	max_req_numb += TQ_RESERVED_NODE_SIZE;
+
+	/* get cfg value */
+	if (max_req_numb == 0) {
+		tq->max_wq_req_size = 1;
+	} else {
+		if (max_req_numb > MAX_WORK_QUEUE_SIZE)
+			max_req_numb = MAX_WORK_QUEUE_SIZE;
+		tq->max_wq_req_size = max_req_numb;
+	}
+
+	/* check can use sdma-like mode or not */
+	if (cfg_dma_need_sdma_like_buffer(dma_mode) == TRUE) {
+		/*
+		 * try get max for sdma-like mode first,
+		 * if can't support at least two for sdma-like mode,
+		 * then degrade to non-sdma-like mode
+		 */
+		if (buf_size >= (2 * MAX_SDMA_LIKE_MODE_NODE_BUF_SIZE))
+			sdma_like_mode = TRUE;
+		else {
+			sdma_like_mode = FALSE;
+			/* can't use sdma_like mode ,so disable this cfg to non-sdma-like mode */
+			DbgErr
+			    ("TQ degrade sdma-like mode to non-sdma-like mode\n");
+			if (dma_mode == CFG_TRANS_MODE_ADMA2_SDMA_LIKE)
+				cfg_dma_mode_dec(pdx->cfg,
+						 CFG_TRANS_MODE_ADMA2);
+			if (dma_mode == CFG_TRANS_MODE_ADMA3_SDMA_LIKE)
+				cfg_dma_mode_dec(pdx->cfg,
+						 CFG_TRANS_MODE_ADMA3);
+			if (dma_mode == CFG_TRANS_MODE_ADMA_MIX_SDMA_LIKE)
+				cfg_dma_mode_dec(pdx->cfg,
+						 CFG_TRANS_MODE_ADMA_MIX);
+			if (dma_mode == CFG_TRANS_MODE_SDMA) {
+				DbgErr("SDMA mode degrade adma2 mode\n");
+				cfg_dma_mode_dec(pdx->cfg,
+						 CFG_TRANS_MODE_ADMA2);
+			}
+		}
+	}
+
+	/* get node size */
+	if (sdma_like_mode == TRUE)
+		node_size = MAX_SDMA_LIKE_MODE_NODE_BUF_SIZE;
+	else
+		node_size = MAX_NODE_BUF_SIZE;
+
+	/* make sure have DMA buffer align size */
+	cnt = buf_size / (node_size);
+	/* small req size is over buffer resource */
+	if (tq->max_wq_req_size >= cnt)
+		tq->max_wq_req_size = cnt;
+
+	/* if infinite mode enable, however only cfg one node.  it can't work for link table. */
+	if (infinite_mode_enable) {
+		if (tq->max_wq_req_size <= 1) {
+			DbgErr
+			    ("infinite mode can't work when only one node.force TQ stall\n");
+			tq->max_wq_req_size = 0;
+		}
+	}
+
+	/* check cnt value */
+	if (tq->max_wq_req_size == 0) {
+		DbgErr("TQ failed to get any dma buffer for only one desc\n");
+		ret = FALSE;
+	} else
+		ret = TRUE;
+
+	DbgInfo(MODULE_TQ_FLOW, FEATURE_DRIVER_INIT, NOT_TO_RAM,
+		"Exit %s max_req:%d dma_mode:%d\n", __func__,
+		tq->max_wq_req_size, dma_mode);
+	return ret;
+
+}
+
+/*
+ *
+ * Function Name:   tag_queue_isr
+ *
+ * Abstract:
+ *
+ *		it's the cb_req_complete function for ISR handle.
+ *
+ * Input:
+ *
+ *		bht_dev_ext_t *pdx [in]: Pointer to the bht adapter extension structure
+ *		cmd_err_t *err [in] : the error information
+ * Output:
+ *
+ *		None.
+ *
+ * Return value:
+ *
+ * Notes:
+ *
+ * Caller: ISR
+ *
+ */
+u32 tag_queue_isr(void *p, cmd_err_t *err)
+{
+	bht_dev_ext_t *pdx = p;
+	tag_queue_t *tq = &pdx->tag_queue;
+
+	DbgInfo(MODULE_TQ_FLOW, FEATURE_RW_TRACE, NOT_TO_RAM, "Enter %s (%s)\n",
+		__func__, err->error_code ? "err" : "ok");
+
+	tq_set_hardware_idle_state(&pdx->tag_queue, TRUE);
+	if (err->error_code) {
+		/*
+		 * just update transfer queue requests to ERROR,
+		 * wait for thread handle later.(retry or other)
+		 */
+
+		req_queue_mark_node_status(tq->wq_cur, REQ_RESULT_ACCESS_ERR);
+	} else {
+		/* complete these request now, mark ok first(for error recovery successful case) */
+
+		req_queue_mark_node_status(tq->wq_cur, REQ_RESULT_OK);
+		tq_work_queue_complete_cur_wq(pdx);
+	}
+	DbgInfo(MODULE_TQ_FLOW, FEATURE_RW_TRACE, NOT_TO_RAM, "Exit %s\n",
+		__func__);
+	return TRUE;
+}
+
+/*
+ *
+ * Function Name:  tag_queue_abort
+ *
+ * Abstract:
+ *
+ *		flush all request with error status in TQ for abort
+ *
+ * Input:
+ *
+ *		bht_dev_ext_t *pdx [in]: Pointer to the bht adapter extension structure
+ *		e_req_result result [in] : the abort status for request
+ * Output:
+ *
+ *		None.
+ *
+ * Return value:
+ *
+ * Notes:
+ *
+ * Caller: thread when wakeup card failed, need abort.
+ *
+ */
+void tag_queue_abort(bht_dev_ext_t *pdx, e_req_result result)
+{
+	DbgInfo(MODULE_TQ_FLOW, FEATURE_RW_TRACE, NOT_TO_RAM,
+		"Enter %s req_result:%x\n", __func__, result);
+
+	if (pdx == NULL) {
+		DbgErr("%s pdx null\n", __func__);
+		goto exit;
+	}
+
+	if (pdx->tag_queue.init_magic_number != TAG_QUEUE_INIT_MAGIC_NUMBER) {
+		DbgErr("TQ no init\n");
+		goto exit;
+	}
+
+	tq_thread_failed_queue(pdx, result, TRUE);
+exit:
+	DbgInfo(MODULE_TQ_FLOW, FEATURE_RW_TRACE, NOT_TO_RAM, "Exit %s\n",
+		__func__);
+}
+
+/*
+ *
+ * Function Name: tag_queue_init
+ *
+ * Abstract:
+ *
+ *		initialize tag queue.
+ *
+ * Input:
+ *
+ *		bht_dev_ext_t *pdx [in]: Pointer to the bht adapter extension structure
+ *
+ * Output:
+ *
+ *		None
+ *
+ * Return value:
+ *
+ *		None.
+ *
+ * Notes:
+ *
+ *		Caller:
+ *		1. This function is called req_global_init
+ *		2. tag queue must use DMA buffer for generate DMA desc table.
+ */
+
+bool tag_queue_init(bht_dev_ext_t *pdx)
+{
+	tag_queue_t *tq = 0;
+	dma_desc_buf_t dma_res = { 0 };
+	bool ret = FALSE, sdma_mode = FALSE;
+	u32 dma_mode = 0;
+	u32 merge_enable = 0;
+
+	DbgInfo(MODULE_TQ_FLOW, FEATURE_DRIVER_INIT, NOT_TO_RAM, "Enter %s\n",
+		__func__);
+	/* input check */
+	if (pdx == NULL) {
+		DbgErr("%s pdx null\n", __func__);
+		goto exit;
+	}
+
+	os_memset(&(pdx->tag_queue), 0, sizeof(tag_queue_t));
+
+	tag_queue_dma_size_init(pdx, pdx->dma_buff.len);
+	/* init var */
+	dma_mode = pdx->cfg->host_item.test_dma_mode_setting.dma_mode;
+	merge_enable =
+	    pdx->cfg->host_item.test_tag_queue_capability.enable_srb_merge;
+	tq = &pdx->tag_queue;
+
+	dma_res = pdx->dma_buff;
+	if (dma_res.len == 0 || dma_res.va == NULL) {
+		DbgErr("%s dma_res null\n", __func__);
+		ret = FALSE;
+		goto exit;
+	}
+
+	/* check req size */
+	if (tq->max_wq_req_size == 0) {
+		DbgErr("%s req size =0\n", __func__);
+		ret = FALSE;
+		goto exit;
+	}
+
+	/* reset TQ state */
+	os_atomic_set(&tq->req_cnt, 0);
+	req_queue_init((PVOID) pdx, &tq->req_queue, tq->queue_id_seed++);
+	tq->wq_cur = NULL;
+	/* bind completion */
+	tq->tran_cpl = &tq->cmd_req.done;
+	/*
+	 * init node memory pool , this call must call
+	 * before tq_setup_dma_res() for use DMA resource
+	 */
+	if (cfg_dma_need_sdma_like_buffer(dma_mode) == TRUE)
+		sdma_mode = TRUE;
+	else
+		sdma_mode = FALSE;
+	if (node_pool_init((PVOID) pdx, tq, &dma_res, sdma_mode) == FALSE) {
+		DbgErr("%s node pool failed\n", __func__);
+		ret = FALSE;
+		goto exit;
+	}
+
+	/* work queue init */
+	if (tq_work_queue_init((PVOID) pdx, tq, &dma_res, dma_mode) == FALSE) {
+		ret = FALSE;
+		goto exit;
+	}
+
+	/* cfg tag queue */
+
+	/* transfer cbs */
+	/*
+	 * 0: SDMA, 1: ADMA2, 2: ADMA3, 3: ADMA2_SDMA_Like,
+	 * 4: ADMA3_SDMA_Like, 0xF: PIO, other: Reserved
+	 */
+	switch (dma_mode) {
+	case CFG_TRANS_MODE_SDMA:
+		tq_sdma_mode_init(&tq->ops);
+		break;
+	case CFG_TRANS_MODE_ADMA2:
+		tq_adma2_inf_mode_init(&tq->ops);
+		break;
+	case CFG_TRANS_MODE_ADMA3:
+		tq_adma3_mode_init(&tq->ops);
+		break;
+	case CFG_TRANS_MODE_ADMA2_SDMA_LIKE:
+		tq_adma2_inf_sdmalike_mode_init(&tq->ops);
+		break;
+	case CFG_TRANS_MODE_ADMA3_SDMA_LIKE:
+		tq_adma3_sdmalike_mode_init(&tq->ops);
+		break;
+	case CFG_TRANS_MODE_ADMA_MIX:
+		tq_adma2_inf_mode_init(&tq->ops);
+		break;
+	case CFG_TRANS_MODE_ADMA_MIX_SDMA_LIKE:
+		tq_adma2_inf_sdmalike_mode_init(&tq->ops);
+		break;
+	case CFG_TRANS_MODE_ADMA2_ONLY:
+		tq_adma2_mode_init(&tq->ops);
+		break;
+	case CFG_TRANS_MODE_ADMA2_ONLY_SDMA_LIKE:
+		tq_adma2_sdmalike_mode_init(&tq->ops);
+		break;
+	default:
+		/* ADMA2,no support PIO mode in tag queue now. */
+		DbgErr("%s dma_mode(%d) invliad,so use default mode\n",
+		       __func__, dma_mode);
+		tq_adma2_mode_init(&tq->ops);
+		break;
+	}
+	tq->cur_dma_mode = dma_mode;
+	os_atomic_set(&(tq->target_dma_mode), dma_mode);
+	tq->cfg_dma_mode = dma_mode;
+	tq_dma_decision_init(&tq->decision, pdx->host.chip_type, 4, 2, 0);
+	/* signature code for init done (TQ internal use) */
+	tq->init_magic_number = TAG_QUEUE_INIT_MAGIC_NUMBER;
+
+	DbgInfo(MODULE_TQ_FLOW, FEATURE_DRIVER_INIT, NOT_TO_RAM,
+		"%s max req total support:%d\n", __func__,
+		tq->max_wq_req_size);
+	if (tq->max_wq_req_size > 0)
+		/*
+		 * for dma infinite transfer limit: need reserved one for
+		 * keep link address in descriptor buf.
+		 */
+		tq->max_wq_req_size -= TQ_RESERVED_NODE_SIZE;
+	DbgInfo(MODULE_TQ_FLOW, FEATURE_DRIVER_INIT, NOT_TO_RAM,
+		"%s max req use:%d\n", __func__, tq->max_wq_req_size);
+
+#if (TQ_WORK_QUEUE_SIZE >= 2)
+
+#define MIN_PINGPONG_BUILD_FUNCTION_SIZE 4
+#define MAX_PINGPONG_BUILD_FUNCTION_SIZE 16
+
+	if (tq->max_wq_req_size >= MIN_PINGPONG_BUILD_FUNCTION_SIZE) {
+		tq->max_build_limit = tq->max_wq_req_size;
+		tq->max_build_limit = tq->max_build_limit / 2;
+		if (tq->max_build_limit >= MAX_PINGPONG_BUILD_FUNCTION_SIZE)
+			tq->max_build_limit = MAX_PINGPONG_BUILD_FUNCTION_SIZE;
+		DbgInfo(MODULE_TQ_FLOW, FEATURE_DRIVER_INIT, NOT_TO_RAM,
+			"max build limit=%d\n", tq->max_build_limit);
+	} else
+		tq->max_build_limit = tq->max_wq_req_size;
+#else
+	tq->max_build_limit = tq->max_wq_req_size;
+#endif
+
+	ret = TRUE;
+exit:
+	DbgInfo(MODULE_TQ_FLOW, FEATURE_DRIVER_INIT, NOT_TO_RAM, "Exit %s\n",
+		__func__);
+	return ret;
+}
diff --git a/drivers/scsi/bht/tagqueue/tq_merge.c b/drivers/scsi/bht/tagqueue/tq_merge.c
new file mode 100644
index 000000000000..51ce2da257d7
--- /dev/null
+++ b/drivers/scsi/bht/tagqueue/tq_merge.c
@@ -0,0 +1,433 @@ 
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2014 BHT Inc.
+ *
+ * File Name: tq_merge.c
+ *
+ * Abstract: handle tagqueue sdma_like transfer cb ops.
+ *
+ * Version: 1.00
+ *
+ * Author: Chuanjin
+ *
+ * Environment:	OS Independent
+ *
+ * History:
+ *
+ * 11/1/2014		Creation	Chuanjin
+ */
+
+#include "../include/basic.h"
+#include "../include/tqapi.h"
+#include "../include/debug.h"
+#include "../include/cmdhandler.h"
+#include "../include/card.h"
+#include "tq_util.h"
+#include "tq_trans_api.h"
+#include "../include/util.h"
+
+/*
+ *
+ * Function Name: queue_2_tb
+ *
+ * Abstract:
+ *
+ *		convert tq list to array format.
+ *
+ * Input:
+ *
+ *		req_queue_t *rq [in]: Pointer to queue
+ *		pnode_t *tb [in] : array table
+ *
+ * Output:
+ *
+ *		None.
+ *
+ * Return value:
+ *
+ *		convert size
+ * Notes:
+ *
+ * Caller:
+ *
+ */
+static u32 queue_2_tb(req_queue_t *rq, pnode_t *tb)
+{
+	u32 len = 0;
+	u32 i = 0;
+	node_t *node = 0;
+
+	/* check parameter */
+	len = node_list_get_cnt(&rq->list);
+
+	if (len > MAX_WORK_QUEUE_SIZE) {
+		len = MAX_WORK_QUEUE_SIZE;
+		DbgErr("%s overflow\n", __func__);
+	}
+	/* convert to array */
+	for (i = 0; i < len; i++) {
+		/* get one from queue */
+		node = node_list_get_one(&rq->list);
+		if (node == NULL)
+			break;
+		tb[i] = node;
+		/* put back to queue */
+		node_list_put_one(&rq->list, node);
+	}
+
+	return len;
+}
+
+/*
+ *
+ * Function Name: mark_continuous_flag
+ *
+ * Abstract:
+ *
+ *		mark continuos flag for transfer queue.
+ *       if next node is continuous node, then mark current node flag means can merge
+ *
+ * Input:
+ *
+ *		sd_card_t *card [in]: card which for merge
+ *		pnode_t *tb [in] : Pointer to array
+ *
+ * Output:
+ *
+ *		None.
+ *
+ * Return value:
+ *
+ *
+ * Notes:
+ *
+ * Caller:
+ *
+ */
+bool tq_judge_request_continuous(bool low_capacity_card, e_data_dir req_dir,
+				 u32 req_sec_addr, u32 req_sec_cnt,
+				 e_data_dir next_req_dir, u32 next_req_sec_addr)
+{
+	bool ret = FALSE;
+
+	DbgInfo(MODULE_TQ_POLICY, FEATURE_RW_TRACE, NOT_TO_RAM,
+		"req dir%x next dir%x\n", req_dir, next_req_dir);
+	DbgInfo(MODULE_TQ_POLICY, FEATURE_RW_TRACE, NOT_TO_RAM,
+		"req sec%x cnt%x, next %x\n", req_sec_addr, req_sec_cnt,
+		next_req_sec_addr);
+	/* same dir */
+	if (req_dir == next_req_dir) {
+		u32 factor = 1;
+		/* for scsd card need */
+		if (low_capacity_card)
+			factor = SD_BLOCK_LEN;
+		else
+			factor = 1;
+		/* calculate continuos case */
+		if ((req_sec_addr + req_sec_cnt * factor) == next_req_sec_addr) {
+			ret = TRUE;
+			DbgInfo(MODULE_TQ_POLICY, FEATURE_RW_TRACE, NOT_TO_RAM,
+				"can merge\n");
+		}
+
+	}
+	return ret;
+}
+
+static bool mark_continuous_flag(sd_card_t *card, pnode_t *tb, u32 len)
+{
+	u32 i = 0;
+	srb_ext_t *pext = 0;
+	request_t *req = 0;
+	request_t *next_req = 0;
+
+	DbgInfo(MODULE_TQ_POLICY, FEATURE_RW_TRACE, NOT_TO_RAM, "Enter %s\n",
+		__func__);
+	/*
+	 * loop for mark
+	 * len-1 :make sure no over flow for mark
+	 */
+	for (i = 0; i < (len - 1); i++) {
+		pext = node_2_srb_ext(tb[i]);
+		req = &pext->req;
+		/* get next req */
+		pext = node_2_srb_ext(tb[i + 1]);
+		next_req = &pext->req;
+
+		/* clear or will false set */
+		tb[i]->flag =
+		    tq_judge_request_continuous(card_is_low_capacity(card),
+						req->data_dir,
+						req->tag_req_t.sec_addr,
+						req->tag_req_t.sec_cnt,
+						next_req->data_dir,
+						next_req->tag_req_t.sec_addr);
+	}
+	DbgInfo(MODULE_TQ_POLICY, FEATURE_RW_TRACE, NOT_TO_RAM, "Exit %s\n",
+		__func__);
+	return TRUE;
+}
+
+/*
+ *
+ * Function Name: update_adma3_blk_cnt
+ *
+ * Abstract:
+ *
+ *		update adma3 command descriptor for block counter
+ *
+ * Input:
+ *
+ *		sd_card_t *card [in]: card which for merge
+ *		dma_desc_buf_t *pdma [in] : Pointer to adma3 command descriptor buffer
+ *
+ *
+ * Output:
+ *
+ *		None.
+ *
+ * Return value:
+ *
+ *
+ * Notes:
+ *
+ * Caller:
+ *
+ */
+int update_adma3_blk_cnt(sd_card_t *card, const dma_desc_buf_t *pdma, u32 cnt)
+{
+	u32 *ptb = (u32 *) pdma->va;
+
+	if (card->card_type == CARD_UHS2) {
+		*(ptb + 3) = cnt;
+		*(ptb + 9) = swapu32(cnt);
+	} else {
+		*(ptb + 1) = cnt;
+	}
+	return 0;
+}
+
+/*
+ *
+ * Function Name:  merge_continous_io
+ *
+ * Abstract:
+ *
+ *		merge one continuous IOs until first break flag occur
+ *
+ * Input:
+ *
+ *		sd_card_t *card [in]: card which for merge
+ *
+ *
+ * Output:
+ *
+ *		None.
+ *
+ * Return value:
+ *		merge number io.
+ *
+ * Notes:
+ *
+ * Caller:
+ *
+ */
+static int merge_continous_io(req_queue_t *rq, sd_card_t *card, pnode_t *tb,
+			      int len, bool dma_64bit)
+{
+	int i = 0;
+	dma_desc_buf_t *pdma = 0;
+	int merge_cnt = 0;
+	srb_ext_t *pext = 0;
+	request_t *req = 0;
+	request_t *next_req = 0;
+	byte *pdesc = 0;
+	u32 size = 0;
+
+	DbgInfo(MODULE_TQ_POLICY, FEATURE_RW_TRACE, NOT_TO_RAM,
+		"Enter %s len:%d dma_64b:%d\n", __func__, len, dma_64bit);
+	merge_cnt = 0;
+	/* get one integrate desc items buffer */
+	pdma = get_one_integrate_desc_res(rq);
+
+	pext = node_2_srb_ext(tb[i]);
+	req = &pext->req;
+
+	merge_cnt = req->tag_req_t.sec_cnt;
+	/* do merge if any */
+	for (i = 0; i < len - 1; i++) {
+		pext = node_2_srb_ext(tb[i]);
+		req = &pext->req;
+		/* get next req */
+		pext = node_2_srb_ext(tb[i + 1]);
+		next_req = &pext->req;
+
+		if (tb[i]->flag == TRUE) {
+			phy_addr_t m_pa;
+			u32 cmd_desc_len = 0;
+
+			merge_cnt += next_req->tag_req_t.sec_cnt;
+			/* get next adma2 table physical address */
+			m_pa = tb[i + 1]->phy_node_buffer.head.pa;
+			if (card->card_type == CARD_UHS2) {
+				cmd_desc_len =
+				    ADMA3_CMDDESC_ITEM_LENGTH *
+				    ADMA3_CMDDESC_ITEM_NUM_UHSII;
+			} else {
+				cmd_desc_len =
+				    ADMA3_CMDDESC_ITEM_LENGTH *
+				    ADMA3_CMDDESC_ITEM_NUM_UHSI;
+			}
+			pa_offset_pa(&m_pa, cmd_desc_len);
+			/* update adma2 table */
+			link_adma2_desc(tb[i]->phy_node_buffer.end.va, &m_pa,
+					dma_64bit);
+		} else {
+			DbgInfo(MODULE_TQ_POLICY, FEATURE_RW_TRACE, NOT_TO_RAM,
+				"no continues (%x)\n", i);
+			break;
+		}
+	}
+
+	pdesc =
+	    build_integrated_desc(pdma->va, &(tb[0]->phy_node_buffer.head.pa),
+				  dma_64bit);
+	size = pp_ofs(pdesc, pdma->va);
+	put_one_integrate_desc(rq, size);
+	/* update cnt */
+	update_adma3_blk_cnt(card, &tb[0]->phy_node_buffer.head, merge_cnt);
+	DbgInfo(MODULE_TQ_POLICY, FEATURE_RW_TRACE, NOT_TO_RAM,
+		"Exit%s ret:%d\n", __func__, i + 1);
+	return (i + 1);
+}
+
+/*
+ *
+ * Function Name: _update_io_descriptor
+ *
+ * Abstract:
+ *
+ *		only forcus on merge IOs descriptor for queue
+ *
+ * Input:
+ *
+ *		sd_card_t *card [in]: card which for merge
+ *
+ *
+ * Output:
+ *
+ *		None.
+ *
+ * Return value:
+ *
+ *
+ * Notes:
+ *
+ * Caller:
+ *
+ */
+static int _update_io_descriptor(req_queue_t *rq, sd_card_t *card,
+				 pnode_t *tb, int len, bool dma_64bit)
+{
+	int sz = 0, left = 0;
+	int i = 0;
+
+	left = len;
+	for (i = 0; i < len;) {
+		sz = merge_continous_io(rq, card, &tb[i], left, dma_64bit);
+		DbgInfo(MODULE_TQ_POLICY, FEATURE_RW_TRACE, NOT_TO_RAM,
+			"merge sz=%x,len=%x\n", sz, len);
+		left -= sz;
+		i += sz;
+	}
+	return 0;
+
+}
+
+/*
+ *
+ * Function Name: update_io_descriptor
+ *
+ * Abstract:
+ *
+ *		update merge IOs descriptor for queue
+ *
+ * Input:
+ *
+ *		sd_card_t *card [in]: card which for merge
+ *
+ *
+ * Output:
+ *
+ *		None.
+ *
+ * Return value:
+ *
+ *
+ * Notes:
+ *
+ * Caller:
+ *
+ */
+static bool update_io_descriptor(sd_card_t *card, req_queue_t *rq,
+				 pnode_t *tb, u32 len, bool dma_64bit)
+{
+	/* reset */
+	tq_adma3_reset_integrate(rq);
+	/* update descriptor */
+	_update_io_descriptor(rq, card, &tb[0], len, dma_64bit);
+	/* end table */
+	adma3_end_integrated_tb(rq->adma3_integrate_tbl_cur.va, dma_64bit);
+
+	return 0;
+}
+
+/*
+ *
+ * Function Name: adma3_merge_io_descriptor
+ *
+ * Abstract:
+ *
+ *		adma3 merge IOs descriptor for queue
+ *
+ * Input:
+ *
+ *		sd_card_t *card [in]: card which for merge
+ *
+ *
+ * Output:
+ *
+ *		None.
+ *
+ * Return value:
+ *
+ *
+ * Notes:
+ *
+ * Caller:
+ *
+ */
+bool adma3_merge_io_descriptor(req_queue_t *rq, sd_card_t *card,
+			       bool dma_64bit)
+{
+	u32 len = 0;
+	node_t *tb[MAX_WORK_QUEUE_SIZE];
+	bool ret = 0;
+
+	len = node_list_get_cnt(&rq->list);
+	DbgInfo(MODULE_TQ_POLICY, FEATURE_RW_TRACE, NOT_TO_RAM,
+		"Enter %s len:%d dma_64b:%d\n", __func__, len, dma_64bit);
+	/* check */
+	if (len < 2) {
+		/* no need merge for one SRB */
+		return TRUE;
+	}
+
+	/* convert to node array */
+	len = queue_2_tb(rq, tb);
+	mark_continuous_flag(card, tb, len);
+	ret = update_io_descriptor(card, rq, tb, len, dma_64bit);
+	DbgInfo(MODULE_TQ_POLICY, FEATURE_RW_TRACE, NOT_TO_RAM,
+		"Exit %s ret:%d\n", __func__, ret);
+	return ret;
+}
diff --git a/drivers/scsi/bht/tagqueue/tq_trans_api.h b/drivers/scsi/bht/tagqueue/tq_trans_api.h
new file mode 100644
index 000000000000..e57974fafc03
--- /dev/null
+++ b/drivers/scsi/bht/tagqueue/tq_trans_api.h
@@ -0,0 +1,91 @@ 
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (c) 2014 BHT Inc.
+ *
+ * File Name: tq_trans_api.h
+ *
+ * Abstract: This file is used to declare interface for TagQueue DMA mode callbacks
+ *
+ * Version: 1.00
+ *
+ * Author: Chuanjin
+ *
+ * Environment:	OS Independent
+ *
+ * History:
+ *
+ * 9/12/2014		Creation	Chuanjin
+ */
+
+#ifndef _TQ_TRANS_CBS_
+#define _TQ_TRANS_CBS_
+
+u32 node_list_get_cnt(list_t *p);
+node_t *node_list_get_one(list_t *p);
+void node_list_put_one(list_t *p, node_t *pnode);
+u32 tag_queue_isr(void *pdx, cmd_err_t *err);
+u32 tq_issue_post_cb(void *p);
+bool req_queue_loop_ctx_ops(req_queue_t *p, req_queue_node_ops_ctx_cb cb,
+			    void *ctx);
+
+/* transfer handle */
+bool adma3_end_integrated_tb(u8 *desc, bool dma_64bit);
+bool link_adma2_desc(u8 *pdesc, phy_addr_t *pa, bool dma_64bit);
+bool gen_sdma_like_sgl(request_t *req, dma_desc_buf_t *pdma);
+dma_desc_buf_t *node_get_desc_res(node_t *node, u32 max_use_size);
+u32 build_card_cmd_desc(sd_card_t *card, u8 *desc, sd_command_t *cmd);
+
+u32 get_sdma_boudary_size(cfg_item_t *cfg);
+bool dma_align(dma_desc_buf_t *pdma, u32 align_size);
+/* sdma */
+bool tq_sdma_mode_init(transfer_cb_t *ops);
+
+/* adma2 */
+void dump_adma2_desc(u8 *desc, u8 *desc_end);
+bool dump_node_adma2_desc(node_t *node, void *ctx);
+
+void dbg_dump_general_desc_tb(u8 *desc, u32 size);
+
+bool tq_adma2_mode_init(transfer_cb_t *ops);
+bool tq_adma2_inf_mode_init(transfer_cb_t *ops);
+
+bool tq_adma2_inf_build_io(void *p, node_t *node);
+bool tq_adma2_build_io(void *p, node_t *node);
+bool tq_adma2_inf_send_command(void *p);
+bool req_build_cmd(sd_card_t *card, sd_command_t *cmd, request_t *req);
+bool tq_adma2_prebuild_io(void *p, node_t *node);
+bool update_adma2_inf_tb(u8 *pdesc, u8 **link_addr, phy_addr_t *pa,
+			 bool dma_64bit);
+bool tq_adma2_inf_unload(void *p);
+bool tq_adma2_sdmalike_copy(void *p, node_t *node);
+
+/* adma3 */
+dma_desc_buf_t *get_one_integrate_desc_res(req_queue_t *rq);
+bool put_one_integrate_desc(req_queue_t *rq, u32 size);
+bool tq_adma3_reset_integrate(req_queue_t *rq);
+bool tq_adma3_mode_init(transfer_cb_t *ops);
+
+bool tq_adma3_build_io(void *p, node_t *node);
+bool tq_adma3_prebuild_io(void *p, node_t *node);
+/* adma3 merge */
+
+bool adma3_merge_io_descriptor(req_queue_t *rq, sd_card_t *card,
+			       bool dma_64bit);
+bool tq_judge_request_continuous(bool low_capacity_card, e_data_dir req_dir,
+				 u32 req_sec_addr, u32 req_sec_cnt,
+				 e_data_dir next_req_dir,
+				 u32 next_req_sec_addr);
+
+/* sdma-like */
+bool tq_adma2_inf_sdmalike_mode_init(transfer_cb_t *ops);
+bool tq_adma2_sdmalike_mode_init(transfer_cb_t *ops);
+bool tq_adma3_sdmalike_mode_init(transfer_cb_t *ops);
+/* others */
+
+bool tag_queue_policy_break(bht_dev_ext_t *pdx);
+void tq_dma_decision_policy(tag_queue_t *tq, sd_card_t *card,
+			    request_t *request);
+void tq_dma_decision_init(decision_mgr *mgr, e_chip_type chip_id,
+			  int scope_size, int up_threshold, int low_threshold);
+
+#endif
diff --git a/drivers/scsi/bht/tagqueue/tq_util.h b/drivers/scsi/bht/tagqueue/tq_util.h
new file mode 100644
index 000000000000..4996527d865e
--- /dev/null
+++ b/drivers/scsi/bht/tagqueue/tq_util.h
@@ -0,0 +1,29 @@ 
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (c) 2014 BHT Inc.
+ *
+ * File Name: tq_util.h
+ *
+ * Abstract: This file is used to define util interface for tag queue
+ *
+ * Version: 1.00
+ *
+ * Author: Chuanjin
+ *
+ * Environment:	OS Independent
+ *
+ * History:
+ *
+ * 9/12/2014		Creation	Chuanjin
+ */
+
+#ifndef _TQ_UTIL_CBS_
+#define _TQ_UTIL_CBS_
+
+u32 pp_ofs(byte *ph, byte *pl);
+
+srb_ext_t *node_2_srb_ext(node_t *node);
+dma_desc_buf_t *get_one_desc_res(dma_desc_buf_t *cur, u32 max_use_size);
+bool put_one_desc_res(dma_desc_buf_t *cur, u32 size);
+
+#endif
diff --git a/drivers/scsi/bht/tagqueue/tqadma2.c b/drivers/scsi/bht/tagqueue/tqadma2.c
new file mode 100644
index 000000000000..90b43978315d
--- /dev/null
+++ b/drivers/scsi/bht/tagqueue/tqadma2.c
@@ -0,0 +1,821 @@ 
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2014 BHT Inc.
+ *
+ * File Name: tqadma2.c
+ *
+ * Abstract: handle tagqueue adma2 transfer cb ops.
+ *
+ * Version: 1.00
+ *
+ * Author: Chuanjin
+ *
+ * Environment:	OS Independent
+ *
+ * History:
+ *
+ * 9/5/2014		Creation	Chuanjin
+ */
+
+#include "../include/basic.h"
+#include "../include/tqapi.h"
+#include "../include/debug.h"
+#include "../include/cmdhandler.h"
+#include "../include/card.h"
+#include "tq_util.h"
+#include "tq_trans_api.h"
+#include "../include/util.h"
+#include "../include/cardapi.h"
+#include "../include/hostapi.h"
+
+/*
+ *
+ * Function Name: node_2_srb_ext
+ *
+ * Abstract:
+ *
+ *		convert node to srb_ext pointer
+ *
+ * Input:
+ *
+ *		node_t *node [in]: Pointer to node
+ *
+ *
+ * Output:
+ *
+ *
+ *
+ * Return value:
+ *
+ *		the srb_ext_t *pointer of the node
+ * Notes:
+ *
+ * Caller:
+ *
+ */
+srb_ext_t *node_2_srb_ext(node_t *node)
+{
+	srb_ext_t *psrb_ext = (srb_ext_t *) node->psrb_ext;
+	return psrb_ext;
+}
+
+static bool tq_adma2_init_ctx(void *p)
+{
+	bool ret = TRUE;
+	bht_dev_ext_t *pdx = (bht_dev_ext_t *) p;
+	req_queue_t *rq = pdx->tag_queue.wq_build;
+
+	DbgInfo(MODULE_TQ_DMA, FEATURE_RW_TRACE, NOT_TO_RAM, "Enter %s\n",
+		__func__);
+	rq->adma2_last_req.data_dir = DATA_DIR_NONE;
+	DbgInfo(MODULE_TQ_DMA, FEATURE_RW_TRACE, NOT_TO_RAM, "Exit %s %d\n",
+		__func__, ret);
+	return ret;
+}
+
+/*
+ *
+ * Function Name: req_build_cmd
+ *
+ * Abstract:
+ *
+ *		build cmd  index & cmd_flag
+ *
+ * Input:
+ *
+ *		sd_command_t *cmd [in]: Pointer to sd_cmd_t
+ *		request_t *req [in] : the req need build
+ *
+ * Output:
+ *
+ *		None.
+ *
+ * Return value:
+ *
+ *		TRUE: build ok
+ * Notes:
+ *
+ * Caller:
+ *
+ */
+bool req_build_cmd(sd_card_t *card, sd_command_t *cmd, request_t *req)
+{
+	u32 merge_enable = 0;
+
+	merge_enable =
+	    card->host->cfg->host_item.test_tag_queue_capability.enable_srb_merge;
+
+	/* set cmd index */
+
+	/* read */
+	if (req->data_dir == DATA_DIR_IN) {
+		if ((req->tag_req_t.sec_cnt == 1)
+		    && (card->inf_trans_enable == 0) && (merge_enable == 0))
+			cmd->cmd_index = SD_CMD17;
+		else {
+			cmd->cmd_index = SD_CMD18;
+			cmd->cmd_flag |= CMD_FLG_MULDATA;
+		}
+	} else {
+		if ((req->tag_req_t.sec_cnt == 1)
+		    && (card->inf_trans_enable == 0) && (merge_enable == 0))
+			cmd->cmd_index = SD_CMD24;
+		else {
+			cmd->cmd_index = SD_CMD25;
+			cmd->cmd_flag |= CMD_FLG_MULDATA;
+		}
+	}
+	/* set arg */
+	cmd->argument = req->tag_req_t.sec_addr;
+	/* set flg */
+	cmd->cmd_flag |= CMD_FLG_R1 | CMD_FLG_RESCHK;
+
+	DbgInfo(MODULE_TQ_DMA, FEATURE_RW_TRACE, NOT_TO_RAM,
+		"Exit %s cmd_idx=%x flg=%x\n", __func__, cmd->cmd_index,
+		cmd->cmd_flag);
+	return TRUE;
+}
+
+/*
+ *
+ * Function Name: tq_adma2_prebuild_io
+ *
+ * Abstract:
+ *
+ *		build ADMA2 desc table, prepare cmd
+ *
+ * Input:
+ *
+ *		void *p [in]: Pointer to the bht_dev_ext_t *
+ *		node_t *node [in] : the node need prebuild
+ *
+ * Output:
+ *
+ *		None.
+ *
+ * Return value:
+ *
+ *		TRUE: build ok
+ * Notes:
+ *
+ * Caller:
+ *
+ */
+bool tq_adma2_prebuild_io(void *p, node_t *node)
+{
+	bht_dev_ext_t *pdx = (bht_dev_ext_t *) p;
+	dma_desc_buf_t *pdma = 0;
+	srb_ext_t *pext = node_2_srb_ext(node);
+	request_t *req = &pext->req;
+	sd_command_t *cmd = &pext->cmd;
+	bool ret = FALSE;
+	bool dma_64bit = node->card->host->bit64_enable ? TRUE : FALSE;
+	bool data_26bit_len =
+	    pdx->cfg->host_item.test_dma_mode_setting.enable_dma_26bit_len ? TRUE : FALSE;
+	u32 dbg_var = 0;
+
+	DbgInfo(MODULE_TQ_DMA, FEATURE_RW_TRACE, NOT_TO_RAM, "Enter %s\n",
+		__func__);
+	/* check parameters */
+	if (req->srb_sg_len == 0 || req->srb_sg_list == NULL) {
+		DbgErr("%s null sglist\n", __func__);
+		ret = FALSE;
+		goto exit;
+	}
+
+	/* 1.build cmd arg */
+	os_memset(cmd, 0, sizeof(sd_command_t));
+	req_build_cmd(node->card, cmd, req);
+	cmd->cmd_flag |= CMD_FLG_ADMA2;
+
+	if (req->gg8_ddr200_workaround)
+		cmd->gg8_ddr200_workaround = 1;
+	else
+		cmd->gg8_ddr200_workaround = 0;
+
+	cmd_set_auto_cmd_flag(&pdx->card, &cmd->cmd_flag);
+
+	/* 2.alloc dma desc buf */
+
+	/* TODO max_len for 64bit dma */
+	pdma = node_get_desc_res(node, MAX_ADMA2_TABLE_LEN);
+	if (pdma == NULL) {
+		DbgErr("%s get desc res failed\n", __func__);
+		ret = FALSE;
+		goto exit;
+	}
+	node->phy_node_buffer.head = *pdma;
+	/* 3.build ADMA2 Desc */
+	dbg_var = req->srb_sg_list[0].Length;
+
+	if (req->gg8_ddr200_workaround) {
+		DbgInfo(MODULE_TQ_DMA, FEATURE_RW_TRACE, NOT_TO_RAM,
+			"Add NOP desc\n");
+		node->phy_node_buffer.end =
+		    build_adma2_desc_nop(req->srb_sg_list, req->srb_sg_len,
+					 (byte *) pdma->va, pdma->len,
+					 dma_64bit, data_26bit_len);
+	} else {
+		node->phy_node_buffer.end = build_adma2_desc(req->srb_sg_list,
+							     req->srb_sg_len,
+							     (byte *) pdma->va,
+							     pdma->len,
+							     dma_64bit,
+							     data_26bit_len);
+	}
+
+	if (node->phy_node_buffer.end.va == NULL)
+		ret = FALSE;
+	else
+		ret = TRUE;
+
+exit:
+	DbgInfo(MODULE_TQ_DMA, FEATURE_RW_TRACE, NOT_TO_RAM, "Exit %s ret=%d\n",
+		__func__, ret);
+	return ret;
+}
+
+/*
+ *
+ * Function Name: tq_adma2_build_io
+ *
+ * Abstract:
+ *
+ *		build io for adma2
+ *
+ * Input:
+ *
+ *		void *p [in]: Pointer to the bht_dev_ext_t *
+ *		node_t *node [in] : the node need build
+ *
+ * Output:
+ *
+ *		None.
+ *
+ * Return value:
+ *
+ *		TRUE: build ok
+ * Notes:
+ *
+ * Caller:
+ *
+ */
+bool tq_adma2_build_io(void *p, node_t *node)
+{
+	bht_dev_ext_t *pdx = (bht_dev_ext_t *) p;
+	req_queue_t *rq = pdx->tag_queue.wq_build;
+	srb_ext_t *pext = node_2_srb_ext(node);
+	request_t *req = &pext->req;
+	sd_command_t *cmd = &pext->cmd;
+	sd_data_t *data = &rq->sd_data;
+	bool ret = FALSE;
+
+	DbgInfo(MODULE_TQ_DMA, FEATURE_RW_TRACE, NOT_TO_RAM, "Enter %s\n",
+		__func__);
+	/* 1.bind cmd to TQ current queue(can't bind when prebuild stage for sync) */
+	rq->priv = cmd;
+	/* 2.bind data to cmd */
+	cmd->data = &rq->sd_data;
+	data->dir = req->data_dir;
+	data->data_mng.total_bytess = req->tag_req_t.sec_cnt * SD_BLOCK_LEN;
+	/* 3.cfg system addr */
+	data->data_mng.sys_addr = node->general_desc_tbl.pa;
+
+	ret = TRUE;
+	DbgInfo(MODULE_TQ_DMA, FEATURE_RW_TRACE, NOT_TO_RAM, "Exit %s ret=%d\n",
+		__func__, ret);
+	return ret;
+
+}
+
+/*
+ *
+ * Function Name: tq_adma2_send_command
+ *
+ * Abstract:
+ *
+ *		adma2 issue cmd
+ *
+ * Input:
+ *
+ *		void *p [in]: Pointer to the bht_dev_ext_t *
+ *
+ * Output:
+ *
+ *		None.
+ *
+ * Return value:
+ *
+ *		TRUE: issue cmd ok
+ * Notes:
+ *
+ * Caller:
+ *
+ */
+static bool tq_adma2_send_command(void *p)
+{
+	bht_dev_ext_t *pdx = (bht_dev_ext_t *) p;
+	sd_card_t *card = &(pdx->card);
+	tag_queue_t *ptq = &pdx->tag_queue;
+	req_queue_t *rq = pdx->tag_queue.wq_cur;
+	host_cmd_req_t *cmd_irq_req = &ptq->cmd_req;
+	sd_command_t *pcmd = (sd_command_t *) rq->priv;
+	bool ret = FALSE;
+
+	DbgInfo(MODULE_TQ_DMA, FEATURE_RW_TRACE, NOT_TO_RAM, "Enter %s\n",
+		__func__);
+	/* bind card */
+	cmd_irq_req->card = card;
+	/* set cmd type */
+	pcmd->sd_cmd = 1;
+	/* generate reg */
+	cmd_generate_reg(card, pcmd);
+	/* issue cmd */
+	ret =
+	    cmd_execute_sync3(card, pcmd, cmd_irq_req, tag_queue_isr,
+			      tq_issue_post_cb);
+#if DBG || _DEBUG
+	if (ret == FALSE) {
+		if (g_dbg_ctrl & DBG_CTRL_DUMP_DESC) {
+			req_queue_loop_ctx_ops(ptq->wq_cur,
+					       dump_node_adma2_desc, NULL);
+		}
+	}
+#endif
+	DbgInfo(MODULE_TQ_DMA, FEATURE_RW_TRACE, NOT_TO_RAM, "Exit %s ret=%d\n",
+		__func__, ret);
+	return ret;
+}
+
+bool tq_adma2_unload(void *p)
+{
+	bht_dev_ext_t *pdx = (bht_dev_ext_t *) p;
+	sd_card_t *card = &(pdx->card);
+	bool ret = FALSE;
+
+	DbgInfo(MODULE_TQ_DMA, FEATURE_RW_TRACE, NOT_TO_RAM, "Enter %s\n",
+		__func__);
+
+	/* Resorte current DMA mode */
+	host_transfer_init(&pdx->host, card->inf_trans_enable, FALSE);
+	ret = TRUE;
+
+	DbgInfo(MODULE_TQ_DMA, FEATURE_RW_TRACE, NOT_TO_RAM, "Exit %s ret=%d\n",
+		__func__, ret);
+	return ret;
+}
+
+/*
+ *
+ * Function Name: tq_adma2_mode_init
+ *
+ * Abstract:
+ *
+ *		init TQ ADMA2 mode cbs
+ *
+ * Input:
+ *
+ *		transfer_cb_t *ops [in]: Pointer to the transfer_cb_t
+ *
+ * Output:
+ *
+ *		None.
+ *
+ * Return value:
+ *
+ *		TRUE: init ok
+ * Notes:
+ *
+ * Caller:
+ *
+ */
+
+bool tq_adma2_mode_init(transfer_cb_t *ops)
+{
+	DbgInfo(MODULE_TQ_DMA, FEATURE_DRIVER_INIT, NOT_TO_RAM, "Enter %s\n",
+		__func__);
+	os_memset(ops, 0, sizeof(transfer_cb_t));
+	ops->init_io = tq_adma2_init_ctx;
+	ops->prebuild_io = tq_adma2_prebuild_io;
+	ops->build_io = tq_adma2_build_io;
+	ops->issue_transfer = tq_adma2_send_command;
+	ops->unload = tq_adma2_unload;
+	DbgInfo(MODULE_TQ_DMA, FEATURE_DRIVER_INIT, NOT_TO_RAM, "Exit %s\n",
+		__func__);
+	return TRUE;
+}
+
+#define ADMA2_DESC_LINK_SUPPORT 1
+
+#if (ADMA2_DESC_LINK_SUPPORT)
+
+/*
+ *	static bool clean_int_for_adma2_inf_tb(u8 *link_addr, bool dma_64bit)
+ *	{
+ *		u32 *ptb = 0;
+ *
+ *		ptb = (u32 *) (link_addr);
+ *		ptb--;
+ *		if (dma_64bit == TRUE) {
+ *			ptb--;
+ *			ptb--;
+ *		}
+ *		ptb--;
+ *		ptb--;
+ *		*ptb &= ~(ADMA2_DESC_INT_BIT);
+ *		return TRUE;
+ *	}
+ */
+
+static bool update_link_for_adma2_inf_tb(u8 **link_addr, bool dma_64bit)
+{
+	u32 *ptb = 0;
+
+	ptb = (u32 *) (*link_addr);
+	if (ptb == NULL) {
+		DbgErr("%s invalid poniter\n", __func__);
+		return FALSE;
+	}
+	ptb--;
+	if (dma_64bit == TRUE) {
+		ptb--;
+		ptb--;
+	}
+	ptb--;
+	ptb--;
+	*ptb = ADMA2_DESC_LINK_VALID;
+	/* update pa */
+	ptb++;
+	(*link_addr) = (u8 *) ptb;
+
+	return TRUE;
+}
+#else
+static bool merge_adma2_inf_tb(u8 *pdesc, u8 *pdesc_end, u8 **link_addr,
+			       bool dma_64bit)
+{
+	u32 *ptb = 0;
+	u8 *pbuf = 0;
+
+	ptb = (u32 *) (*link_addr);
+	ptb--;
+	if (dma_64bit == TRUE) {
+		ptb--;
+		ptb--;
+	}
+	ptb--;
+	ptb--;
+	/* merge adma2 tb */
+	pbuf = (u8 *) ptb;
+	for (; pdesc < pdesc_end;)
+		*(pbuf++) = *(pdesc++);
+	/* update pa */
+	(*link_addr) = pbuf;
+
+	return TRUE;
+
+}
+
+#endif
+
+/*
+ *
+ * Function Name: tq_adma2_inf_build_io
+ *
+ * Abstract:
+ *
+ *		build adma2 infinite io
+ *
+ * Input:
+ *
+ *		void *p [in]: Pointer to the bht_dev_ext_t
+ *		 node_t *node [in]:pointer to node which build for
+ *
+ * Output:
+ *
+ *		None.
+ *
+ * Return value:
+ *
+ *		TRUE: build ok
+ * Notes:
+ *
+ * Caller:
+ *
+ */
+bool tq_adma2_inf_build_io(void *p, node_t *node)
+{
+	bht_dev_ext_t *pdx = (bht_dev_ext_t *) p;
+	req_queue_t *rq = pdx->tag_queue.wq_build;
+	srb_ext_t *pext = node_2_srb_ext(node);
+	request_t *req = &pext->req;
+	sd_command_t *cmd = &pext->cmd;
+	sd_data_t *data = &rq->sd_data;
+	bool ret = FALSE;
+	u32 flg = 0;
+	bool dma_64bit = node->card->host->bit64_enable ? TRUE : FALSE;
+	u32 merge_enable =
+	    pdx->cfg->host_item.test_tag_queue_capability.enable_srb_merge;
+
+	DbgInfo(MODULE_TQ_DMA, FEATURE_RW_TRACE, NOT_TO_RAM, "Enter %s\n",
+		__func__);
+
+	if (merge_enable == TRUE) {
+		if (rq->adma2_last_req.data_dir != DATA_DIR_NONE) {
+			if (FALSE ==
+			    tq_judge_request_continuous(card_is_low_capacity
+							(node->card),
+							rq->adma2_last_req.data_dir,
+							rq->adma2_last_req.sec_addr,
+							rq->adma2_last_req.sec_cnt,
+							req->data_dir,
+							req->tag_req_t.sec_addr)) {
+				/* not continue build case */
+				ret = FALSE;
+				goto exit;
+			} else {
+				if (pdx->tag_queue.adma2_inf_link_addr == NULL) {
+					/*
+					 * not link case, for seq but nfcu not match case
+					 * fix adma2 merge transfer bug(LinuxStorDriver Issue #3:
+					 * Insert USHII Card ,Lead  the Os Hang)
+					 */
+					ret = FALSE;
+					goto exit;
+				}
+				/* non-first node */
+				flg =
+				    cmd_can_use_inf(node->card, data->dir,
+						    cmd->argument,
+						    req->tag_req_t.sec_cnt);
+				if (flg == 0) {
+					/* can't merge case */
+					ret = FALSE;
+					goto exit;
+				}
+#if (ADMA2_DESC_LINK_SUPPORT)
+				if (FALSE ==
+				    update_link_for_adma2_inf_tb(&
+								 (pdx->tag_queue.adma2_inf_link_addr),
+								 dma_64bit)) {
+					/* can't merge case */
+					ret = FALSE;
+					goto exit;
+				}
+				update_adma2_inf_tb(node->phy_node_buffer.end.va,
+						    &(pdx->tag_queue.adma2_inf_link_addr),
+						    &node->phy_node_buffer.head.pa,
+							dma_64bit);
+#else
+				merge_adma2_inf_tb(node->phy_node_buffer.head.va,
+						   node->phy_node_buffer.end.va,
+						   &(pdx->tag_queue.adma2_inf_link_addr),
+						   dma_64bit);
+				update_adma2_inf_tb(pdx->tag_queue.adma2_inf_link_addr,
+						    &(pdx->tag_queue.adma2_inf_link_addr),
+						    NULL, dma_64bit);
+
+#endif
+				rq->sd_data.data_mng.total_bytess +=
+				    req->tag_req_t.sec_cnt * SD_BLOCK_LEN;
+				/* update */
+				rq->adma2_last_req.data_dir = req->data_dir;
+				rq->adma2_last_req.sec_addr =
+				    req->tag_req_t.sec_addr;
+				rq->adma2_last_req.sec_cnt =
+				    req->tag_req_t.sec_cnt;
+				/* update cmd arg for cmd layer merge case update last_sec */
+				if (card_is_low_capacity(node->card))
+					cmd->argument =
+					    (cmd->argument +
+					     req->tag_req_t.sec_cnt *
+					     SD_BLOCK_LEN) -
+					    rq->sd_data.data_mng.total_bytess;
+				else
+					cmd->argument =
+					    (cmd->argument +
+					     req->tag_req_t.sec_cnt) -
+					    (rq->sd_data.data_mng.total_bytess /
+					     SD_BLOCK_LEN);
+
+				ret = TRUE;
+				goto exit;
+			}
+		}
+		/* update */
+		rq->adma2_last_req.data_dir = req->data_dir;
+		rq->adma2_last_req.sec_addr = req->tag_req_t.sec_addr;
+		rq->adma2_last_req.sec_cnt = req->tag_req_t.sec_cnt;
+	}
+
+	/* update */
+
+	/* 1. build basic adma2 io */
+	if (tq_adma2_build_io(p, node) == FALSE) {
+		DbgErr("buid adm2 io failed\n");
+		goto exit;
+	}
+
+	/* 3. build inifinte table if need */
+
+	flg =
+	    cmd_can_use_inf(node->card, data->dir, cmd->argument,
+			    req->tag_req_t.sec_cnt);
+
+	DbgInfo(MODULE_TQ_DMA, FEATURE_RW_TRACE, NOT_TO_RAM,
+		"%s card:%x flg:%x\n", __func__, node->card->has_built_inf,
+		flg);
+
+	/* have build infinite */
+	if (node->card->has_built_inf) {
+
+		if (CMD_FLG_INF_CON & flg) {
+			/* continue case */
+			update_adma2_inf_tb(node->phy_node_buffer.end.va,
+					    &(pdx->tag_queue.adma2_inf_link_addr),
+					    &node->phy_node_buffer.head.pa,
+					    dma_64bit);
+		} else {
+			/* need stop infinite */
+
+			/* can build inf */
+			if (CMD_FLG_INF_BUILD & flg) {
+				update_adma2_inf_tb(node->phy_node_buffer.end.va,
+						    &(pdx->tag_queue.adma2_inf_link_addr),
+						    NULL, dma_64bit);
+			} else {
+				pdx->tag_queue.adma2_inf_link_addr = NULL;
+			}
+		}
+	} else {
+		/* can build inf */
+		if (CMD_FLG_INF_BUILD & flg) {
+			update_adma2_inf_tb(node->phy_node_buffer.end.va,
+					    &(pdx->tag_queue.adma2_inf_link_addr),
+					    NULL, dma_64bit);
+		} else {
+			pdx->tag_queue.adma2_inf_link_addr = NULL;
+		}
+
+	}
+	/* updae cmd flag */
+	cmd->cmd_flag |= flg;
+
+	ret = TRUE;
+exit:
+	DbgInfo(MODULE_TQ_DMA, FEATURE_RW_TRACE, NOT_TO_RAM, "Exit %s ret=%d\n",
+		__func__, ret);
+	return ret;
+
+}
+
+/*
+ *
+ * Function Name: tq_adma2_inf_send_command
+ *
+ * Abstract:
+ *
+ *		issue adma2 infinite command
+ *
+ * Input:
+ *
+ *		void *p [in]: Pointer to the bht_dev_ext_t
+ *
+ *
+ * Output:
+ *
+ *		None.
+ *
+ * Return value:
+ *
+ *		TRUE: issue ok
+ * Notes:
+ *
+ * Caller:
+ *
+ */
+bool tq_adma2_inf_send_command(void *p)
+{
+	bht_dev_ext_t *pdx = (bht_dev_ext_t *) p;
+	sd_card_t *card = &(pdx->card);
+	tag_queue_t *ptq = &pdx->tag_queue;
+	req_queue_t *rq = pdx->tag_queue.wq_cur;
+	host_cmd_req_t *cmd_irq_req = &ptq->cmd_req;
+	sd_command_t *pcmd = (sd_command_t *) rq->priv;
+	bool ret = FALSE;
+
+	DbgInfo(MODULE_TQ_DMA, FEATURE_RW_TRACE, NOT_TO_RAM, "Enter %s\n",
+		__func__);
+	/* 1.bind card */
+	cmd_irq_req->card = card;
+	/* 2.set cmd type */
+	pcmd->sd_cmd = 1;
+
+	if (card->has_built_inf) {
+		if (!(pcmd->cmd_flag & CMD_FLG_INF_CON)) {
+			sd_command_t sd_cmd;
+
+			ret = card_stop_infinite(card, FALSE, &sd_cmd);
+			if (ret == FALSE) {
+				DbgErr("%s stop infinite failed\n",
+				       __func__);
+				pcmd->err = sd_cmd.err;
+				goto exit;
+			}
+
+		}
+	} else {
+		if (pcmd->cmd_flag & CMD_FLG_INF_CON) {
+			DbgInfo(MODULE_TQ_DMA, FEATURE_RW_TRACE, NOT_TO_RAM,
+				"%s clear INF_CON for infinite no build\n",
+				__func__);
+			pcmd->cmd_flag &= ~(CMD_FLG_INF_CON);
+			pcmd->cmd_flag |= CMD_FLG_INF_BUILD;
+		}
+	}
+	/* 3.generate reg */
+
+	/* todo check return */
+	cmd_generate_reg(card, pcmd);
+
+	/* 4.issue cmd */
+	ret =
+	    cmd_execute_sync3(card, pcmd, cmd_irq_req, tag_queue_isr,
+			      tq_issue_post_cb);
+#if DBG || _DEBUG
+	if (ret == FALSE) {
+		if (g_dbg_ctrl & DBG_CTRL_DUMP_DESC) {
+			req_queue_loop_ctx_ops(ptq->wq_cur,
+					       dump_node_adma2_desc, NULL);
+		}
+	}
+#endif
+exit:
+	DbgInfo(MODULE_TQ_DMA, FEATURE_RW_TRACE, NOT_TO_RAM, "Exit %s ret=%d\n",
+		__func__, ret);
+	return ret;
+}
+
+bool tq_adma2_inf_unload(void *p)
+{
+	bht_dev_ext_t *pdx = (bht_dev_ext_t *) p;
+	sd_card_t *card = &(pdx->card);
+	req_queue_t *rq = pdx->tag_queue.wq_cur;
+	sd_command_t *pcmd = (sd_command_t *) rq->priv;
+	bool ret = FALSE;
+
+	if (card->has_built_inf) {
+		sd_command_t sd_cmd;
+
+		ret = card_stop_infinite(card, FALSE, &sd_cmd);
+		if (ret == FALSE) {
+			DbgErr("%s stop infinite failed\n", __func__);
+			pcmd->err = sd_cmd.err;
+			goto exit;
+		}
+	}
+	ret = TRUE;
+exit:
+	DbgInfo(MODULE_TQ_DMA, FEATURE_RW_TRACE, NOT_TO_RAM, "Exit %s ret=%d\n",
+		__func__, ret);
+	return ret;
+}
+
+/*
+ *
+ * Function Name: tq_adma2_inf_mode_init
+ *
+ * Abstract:
+ *
+ *		init adma2 infinite mode
+ *
+ * Input:
+ *
+ *		transfer_cb_t *ops [in]: Pointer to the callback
+ *
+ *
+ * Output:
+ *
+ *		None.
+ *
+ * Return value:
+ *
+ *		TRUE: init ok
+ * Notes:
+ *
+ * Caller:
+ *
+ */
+bool tq_adma2_inf_mode_init(transfer_cb_t *ops)
+{
+	DbgInfo(MODULE_TQ_DMA, FEATURE_DRIVER_INIT, NOT_TO_RAM, "Enter %s\n",
+		__func__);
+	os_memset(ops, 0, sizeof(transfer_cb_t));
+	tq_adma2_mode_init(ops);
+	ops->build_io = tq_adma2_inf_build_io;
+	ops->issue_transfer = tq_adma2_inf_send_command;
+	ops->unload = tq_adma2_inf_unload;
+	DbgInfo(MODULE_TQ_DMA, FEATURE_DRIVER_INIT, NOT_TO_RAM, "Exit %s\n",
+		__func__);
+	return TRUE;
+}
diff --git a/drivers/scsi/bht/tagqueue/tqadma3.c b/drivers/scsi/bht/tagqueue/tqadma3.c
new file mode 100644
index 000000000000..4a3113e5aef5
--- /dev/null
+++ b/drivers/scsi/bht/tagqueue/tqadma3.c
@@ -0,0 +1,504 @@ 
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2014 BHT Inc.
+ *
+ * File Name: tqadma3.c
+ *
+ * Abstract: handle tagqueue adma3 transfer cb ops
+ *
+ * Version: 1.00
+ *
+ * Author: Chuanjin
+ *
+ * Environment:	OS Independent
+ *
+ * History:
+ *
+ * 9/11/2014		Creation	Chuanjin
+ */
+
+#include "../include/basic.h"
+#include "../include/tqapi.h"
+#include "../include/debug.h"
+#include "../include/cmdhandler.h"
+#include "../include/card.h"
+#include "tq_util.h"
+#include "../include/util.h"
+#include "tq_trans_api.h"
+
+/*
+ *
+ * Function Name:  get_one_desc_res
+ *
+ * Abstract:
+ *
+ *		get one descriptor dma buffer resource
+ *
+ * Input:
+ *
+ *		dma_desc_buf_t *cur [in]: Pointer to the dma buffer resource
+ *		u32 max_use_size [in] : the max use size for overflow buffer check
+ *
+ * Output:
+ *
+ *		None.
+ *
+ * Return value:
+ *
+ *		NULL: failed to get dma resource
+ *		other: get the dma resource
+ * Notes:
+ *
+ * Caller:
+ *
+ */
+dma_desc_buf_t *get_one_desc_res(dma_desc_buf_t *cur, u32 max_use_size)
+{
+	dma_desc_buf_t *p = cur;
+
+	if (max_use_size > p->len) {
+		DbgErr("%s no enough buf for desc %x > (%x)\n", __func__,
+		       max_use_size, p->len);
+		return NULL;
+	}
+	return cur;
+}
+
+/*
+ *
+ * Function Name:  put_one_desc_res
+ *
+ * Abstract:
+ *
+ *		put one descriptor size for update dma buffer resource
+ *
+ * Input:
+ *
+ *		dma_desc_buf_t *cur [in]: Pointer to the dma buffer resource
+ *		size [in] : the use size
+ *
+ * Output:
+ *
+ *		None.
+ *
+ * Return value:
+ *
+ *		TRUE: put successful
+ *		FALSE: put failed
+ * Notes:
+ *
+ * Caller:
+ *
+ */
+bool put_one_desc_res(dma_desc_buf_t *cur, u32 size)
+{
+	return resize_dma_buf(cur, size);
+}
+
+dma_desc_buf_t *get_one_integrate_desc_res(req_queue_t *rq)
+{
+	return &rq->adma3_integrate_tbl_cur;
+}
+
+bool put_one_integrate_desc(req_queue_t *rq, u32 size)
+{
+	return resize_dma_buf(&rq->adma3_integrate_tbl_cur, size);
+}
+
+bool tq_adma3_reset_integrate(req_queue_t *rq)
+{
+	bool ret = FALSE;
+
+	DbgInfo(MODULE_TQ_DMA, FEATURE_RW_TRACE, NOT_TO_RAM,
+		"Enter %s rq(%d)\n", __func__, rq->id);
+	rq->adma3_integrate_tbl_cur = rq->adma3_integrate_tbl;
+	if (rq->adma3_integrate_tbl_cur.va == NULL) {
+		DbgErr("%s null va\n", __func__);
+		goto exit;
+		ret = FALSE;
+	}
+	os_memset(rq->adma3_integrate_tbl_cur.va, 0,
+		  rq->adma3_integrate_tbl.len);
+	ret = TRUE;
+exit:
+	DbgInfo(MODULE_TQ_DMA, FEATURE_RW_TRACE, NOT_TO_RAM, "Exit %s\n",
+		__func__);
+	return TRUE;
+}
+
+/*
+ *
+ * Function Name:  tq_adma3_init_ctx
+ *
+ * Abstract:
+ *
+ *		init adma3 IO context
+ *
+ * Input:
+ *
+ *		void *p [in]: Pointer to the bht_dev_ext_t
+ *
+ *
+ * Output:
+ *
+ *		None.
+ *
+ * Return value:
+ *
+ *		TRUE: init successful
+ *		FALSE: init failed
+ * Notes:
+ *
+ * Caller:
+ *
+ */
+static bool tq_adma3_init_ctx(void *p)
+{
+	bool ret = FALSE;
+	bht_dev_ext_t *pdx = (bht_dev_ext_t *) p;
+	req_queue_t *rq = pdx->tag_queue.wq_build;
+
+	DbgInfo(MODULE_TQ_DMA, FEATURE_RW_TRACE, NOT_TO_RAM, "Enter %s\n",
+		__func__);
+	ret = tq_adma3_reset_integrate(rq);
+	DbgInfo(MODULE_TQ_DMA, FEATURE_RW_TRACE, NOT_TO_RAM, "Exit %s %d\n",
+		__func__, ret);
+	return ret;
+}
+
+/*
+ *
+ * Function Name: tq_adma3_prebuild_io
+ *
+ * Abstract:
+ *
+ *		build ADMA3 cmd & adma2 desc table, however not build integrate table.
+ *
+ * Input:
+ *
+ *		void *p [in]: Pointer to the bht_dev_ext_t *
+ *		node_t *node [in] : the node need prebuild
+ *
+ * Output:
+ *
+ *		None.
+ *
+ * Return value:
+ *
+ *		TRUE: build ok
+ * Notes:
+ *
+ * Caller:
+ *
+ */
+bool tq_adma3_prebuild_io(void *p, node_t *node)
+{
+	bht_dev_ext_t *pdx = (bht_dev_ext_t *) p;
+	dma_desc_buf_t *pdma = 0, dma_buf;
+	srb_ext_t *pext = node_2_srb_ext(node);
+	request_t *req = &pext->req;
+	sd_command_t *cmd = &pext->cmd;
+	sd_card_t *card = node->card;
+	bool ret = FALSE;
+	sd_data_t mdata;
+	u32 size = 0;
+	bool dma_64bit = card->host->bit64_enable ? TRUE : FALSE;
+	bool data_26bit_len =
+	    pdx->cfg->host_item.test_dma_mode_setting.enable_dma_26bit_len ? TRUE : FALSE;
+
+	DbgInfo(MODULE_TQ_DMA, FEATURE_RW_TRACE, NOT_TO_RAM, "Enter %s\n",
+		__func__);
+
+	/* check parameters */
+	if (req->srb_sg_len == 0 || req->srb_sg_list == NULL) {
+		DbgErr("%s null sglist\n", __func__);
+		ret = FALSE;
+		goto exit;
+	}
+
+	/* 1.build cmd arg */
+	os_memset(cmd, 0, sizeof(sd_command_t));
+	req_build_cmd(card, cmd, req);
+	cmd_set_auto_cmd_flag(&pdx->card, &cmd->cmd_flag);
+	cmd->cmd_flag |= CMD_FLG_ADMA3;
+	/* 2. generate regs */
+	cmd->data = &mdata;
+	mdata.dir = req->data_dir;
+	mdata.data_mng.total_bytess = req->tag_req_t.sec_cnt * SD_BLOCK_LEN;
+	/* set cmd type */
+	cmd->sd_cmd = 1;
+	cmd_generate_reg(card, cmd);
+
+	/* 3.alloc dma desc buf */
+
+	/* TODO max size */
+	pdma = node_get_desc_res(node, MAX_ADMA2_TABLE_LEN);
+
+	if (pdma == NULL) {
+		DbgErr("Adma3 Get desc res failed\n");
+		ret = FALSE;
+		goto exit;
+	}
+	dma_buf = *pdma;
+	/* no change node desc buffer, or cause len small */
+	pdma = &dma_buf;
+	node->phy_node_buffer.head = *pdma;
+
+	/* 4.build cmd desc */
+	size = build_card_cmd_desc(card, pdma->va, cmd);
+
+	resize_dma_buf(pdma, size);
+	/* 5.build ADMA2 Desc */
+	node->phy_node_buffer.end = build_adma2_desc(req->srb_sg_list,
+						     req->srb_sg_len,
+						     (byte *) pdma->va,
+						     pdma->len, dma_64bit,
+						     data_26bit_len);
+	if (node->phy_node_buffer.end.va == NULL) {
+		DbgErr("%s build adm2 desc failed\n", __func__);
+		ret = FALSE;
+		goto exit;
+	} else
+		ret = TRUE;
+	/* integrate table must delay to build stage. or can't support multi */
+
+exit:
+	DbgInfo(MODULE_TQ_DMA, FEATURE_RW_TRACE, NOT_TO_RAM, "Exit %s ret=%d\n",
+		__func__, ret);
+	return ret;
+}
+
+/*
+ *
+ * Function Name:  tq_adma3_build_io
+ *
+ * Abstract:
+ *
+ *		build adma3 context
+ *
+ * Input:
+ *
+ *		void *p [in]: Pointer to the bht_dev_ext_t
+ *		node_t *node [in]: pointer to node which need build
+ *
+ * Output:
+ *
+ *		None.
+ *
+ * Return value:
+ *
+ *		TRUE: build successful
+ *		FALSE: build failed
+ * Notes:
+ *
+ * Caller:
+ *
+ */
+bool tq_adma3_build_io(void *p, node_t *node)
+{
+	bht_dev_ext_t *pdx = (bht_dev_ext_t *) p;
+	dma_desc_buf_t *pdma = 0;
+	req_queue_t *rq = pdx->tag_queue.wq_build;
+	request_t *req = &node_2_srb_ext(node)->req;
+	sd_command_t *cmd = &node_2_srb_ext(node)->cmd;
+	sd_data_t *data = &rq->sd_data;
+	bool ret = FALSE;
+	byte *pdesc = 0;
+	u32 size = 0;
+	bool dma_64bit = node->card->host->bit64_enable ? TRUE : FALSE;
+
+	DbgInfo(MODULE_TQ_DMA, FEATURE_RW_TRACE, NOT_TO_RAM, "Enter %s\n",
+		__func__);
+
+	if (tq_adma3_prebuild_io(p, node) == FALSE)
+		goto exit;
+	/* cfg integrated desc */
+	pdma = get_one_integrate_desc_res(rq);
+	pdesc =
+	    build_integrated_desc(pdma->va, &(node->phy_node_buffer.head.pa),
+				  dma_64bit);
+	size = pp_ofs(pdesc, pdma->va);
+	put_one_integrate_desc(rq, size);
+	/* 1.bind cmd to TQ current queue(can't bind when prebuild stage for sync) */
+	rq->priv = cmd;
+	/* 2.bind data to cmd */
+	cmd->data = &rq->sd_data;
+	data->dir = req->data_dir;
+	data->data_mng.total_bytess = req->tag_req_t.sec_cnt * SD_BLOCK_LEN;
+	/* 3.cfg system addr */
+	data->data_mng.sys_addr = rq->adma3_integrate_tbl.pa;
+	ret = TRUE;
+exit:
+	DbgInfo(MODULE_TQ_DMA, FEATURE_RW_TRACE, NOT_TO_RAM, "Exit %s ret=%d\n",
+		__func__, ret);
+	return ret;
+}
+
+/*
+ *
+ * Function Name:  tq_adma3_send_command
+ *
+ * Abstract:
+ *
+ *		send adma3 command
+ *
+ * Input:
+ *
+ *		void *p [in]: Pointer to the bht_dev_ext_t
+ *
+ * Output:
+ *
+ *		None.
+ *
+ * Return value:
+ *
+ *		TRUE: issue cmd successful
+ *		FALSE: issue failed
+ * Notes:
+ *
+ * Caller:
+ *
+ */
+
+void dump_adma3_integrate_desc(u8 *desc, bool dma_64bit, u32 cnt)
+{
+	u32 size = 0;
+
+	if (dma_64bit == TRUE)
+		size = cnt * ADMA3_INTEGRATEDDESC_128BIT_ITEM_LEN;
+	else
+		size = cnt * ADMA3_INTEGRATEDDESC_ITEM_LEN;
+	DbgErr("%s integrate cnt=%d\n", __func__, cnt);
+	dbg_dump_general_desc_tb(desc, size);
+}
+
+/*
+ *
+ * Function Name:dump_node_adma3_desc
+ *
+ * Abstract:
+ *
+ *		dump node adma3 desc
+ *
+ * Input:
+ *
+ *
+ * Output:
+ *
+ *
+ *
+ * Return value:
+ *
+ * Notes:
+ *
+ * Caller:
+ *
+ */
+static bool dump_node_adma3_desc(node_t *node, void *ctx)
+{
+	phy_addr_t sys_addr;
+	u8 *desc = node->phy_node_buffer.head.va;
+	u8 *desc_end = node->phy_node_buffer.end.va;
+
+	sys_addr = node->phy_node_buffer.head.pa;
+	DbgErr("sys addrl %x addrh %x\n", os_get_phy_addr32l(sys_addr),
+	       os_get_phy_addr32h(sys_addr));
+	dump_adma2_desc(desc, desc_end);
+	return TRUE;
+}
+
+bool tq_adma3_send_command(void *p)
+{
+	bht_dev_ext_t *pdx = (bht_dev_ext_t *) p;
+	sd_card_t *card = &(pdx->card);
+	tag_queue_t *ptq = &pdx->tag_queue;
+	req_queue_t *rq = pdx->tag_queue.wq_cur;
+	host_cmd_req_t *cmd_irq_req = &ptq->cmd_req;
+	sd_command_t *pcmd = (sd_command_t *) rq->priv;
+	bool ret = FALSE;
+	bool dma_64bit = card->host->bit64_enable ? TRUE : FALSE;
+	u32 merge_enable =
+	    pdx->cfg->host_item.test_tag_queue_capability.enable_srb_merge;
+
+	DbgInfo(MODULE_TQ_DMA, FEATURE_RW_TRACE, NOT_TO_RAM, "Enter %s\n",
+		__func__);
+	/* 1. generate integare table */
+	adma3_end_integrated_tb(rq->adma3_integrate_tbl_cur.va, dma_64bit);
+
+	/* bind card */
+	cmd_irq_req->card = card;
+
+	/* merge test */
+	if (merge_enable)
+		adma3_merge_io_descriptor(rq, card, dma_64bit);
+
+	/* 3. issue command */
+	ret =
+	    cmd_execute_sync3(card, pcmd, cmd_irq_req, tag_queue_isr,
+			      tq_issue_post_cb);
+	DbgInfo(MODULE_TQ_DMA, FEATURE_RW_TRACE, NOT_TO_RAM, "Exit %s ret=%d\n",
+		__func__, ret);
+#if DBG || _DEBUG
+	if (ret == FALSE) {
+		if (g_dbg_ctrl & DBG_CTRL_DUMP_DESC) {
+			u32 cnt = 0;
+
+			cnt = node_list_get_cnt(&ptq->wq_cur->list);
+			DbgErr("ADMA3 sys addrl %x addrh %x\n",
+			       os_get_phy_addr32l(rq->adma3_integrate_tbl.pa),
+			       os_get_phy_addr32h(rq->adma3_integrate_tbl.pa));
+			dump_adma3_integrate_desc(rq->adma3_integrate_tbl.va,
+						  dma_64bit, cnt);
+			req_queue_loop_ctx_ops(ptq->wq_cur,
+					       dump_node_adma3_desc, NULL);
+		}
+	}
+#endif
+	return ret;
+}
+
+bool tq_adma3_poweroff_need_rebuild(void *p)
+{
+	/* when card poweroff, adma3 need rebuild transfer ctx */
+	return TRUE;
+}
+
+/*
+ *
+ * Function Name: tq_adma3_mode_init
+ *
+ * Abstract:
+ *
+ *		init TQ ADMA3 mode cbs
+ *
+ * Input:
+ *
+ *		transfer_cb_t *ops [in]: Pointer to the transfer_cb_t
+ *
+ * Output:
+ *
+ *		None.
+ *
+ * Return value:
+ *
+ *		TRUE: init ok
+ * Notes:
+ *
+ * Caller:
+ *
+ */
+bool tq_adma3_mode_init(transfer_cb_t *ops)
+{
+	DbgInfo(MODULE_TQ_DMA, FEATURE_DRIVER_INIT, NOT_TO_RAM, "Enter %s\n",
+		__func__);
+	os_memset(ops, 0, sizeof(transfer_cb_t));
+	ops->init_io = tq_adma3_init_ctx;
+	/* for amda3 auto poweroff case, adma3 can't get card type(uhs2 or legacy) */
+	ops->prebuild_io = NULL;
+	ops->build_io = tq_adma3_build_io;
+	ops->issue_transfer = tq_adma3_send_command;
+	ops->poweroff_need_rebuild = tq_adma3_poweroff_need_rebuild;
+	DbgInfo(MODULE_TQ_DMA, FEATURE_DRIVER_INIT, NOT_TO_RAM, "Exit %s\n",
+		__func__);
+	return TRUE;
+}
diff --git a/drivers/scsi/bht/tagqueue/tqadma_sdma_like.c b/drivers/scsi/bht/tagqueue/tqadma_sdma_like.c
new file mode 100644
index 000000000000..35ba6feb078d
--- /dev/null
+++ b/drivers/scsi/bht/tagqueue/tqadma_sdma_like.c
@@ -0,0 +1,373 @@ 
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2014 BHT Inc.
+ *
+ * File Name: tqadma_sdma_like.c
+ *
+ * Abstract: handle tagqueue sdma_like transfer cb ops
+ *
+ * Version: 1.00
+ *
+ * Author: Chuanjin
+ *
+ * Environment:	OS Independent
+ *
+ * History:
+ *
+ * 11/1/2014		Creation	Chuanjin
+ */
+
+#include "../include/basic.h"
+#include "../include/tqapi.h"
+#include "../include/debug.h"
+#include "../include/cmdhandler.h"
+#include "../include/card.h"
+#include "tq_util.h"
+#include "tq_trans_api.h"
+#include "../include/util.h"
+#include "../include/hostapi.h"
+
+/*
+ *
+ * Function Name: tq_adma2_sdmalike_prebuild_io
+ *
+ * Abstract:
+ *
+ *		prebuild sdma-like mode adma2 io
+ *
+ * Input:
+ *
+ *		void * p [in]: Pointer to the bht_dev_ext_t *
+ *		node_t *node [in] : the node need prebuild
+ *
+ * Output:
+ *
+ *		None.
+ *
+ * Return value:
+ *
+ *		TRUE: build ok
+ * Notes:
+ *
+ * Caller:
+ *
+ */
+static bool tq_adma2_sdmalike_prebuild_io(void *p, node_t *node)
+{
+	srb_ext_t *pext = node_2_srb_ext(node);
+	request_t *req = &pext->req;
+	dma_desc_buf_t *pdma = 0;
+	bool ret = TRUE;
+
+	DbgInfo(MODULE_TQ_DMA, FEATURE_RW_TRACE, NOT_TO_RAM, "Enter %s\n",
+		__func__);
+	/* 1. get sdma like buf address */
+	pdma = &node->data_tbl;
+
+	/* 2. mark it's sdma-like node */
+	node->sdma_like = 1;
+
+	/* 3. generate sdma like sglist table */
+
+	if (gen_sdma_like_sgl(req, pdma) == FALSE) {
+		DbgErr("%s sdma like sgl failed\n", __func__);
+		ret = FALSE;
+		goto exit;
+	}
+
+	/* 4. call adma2 build API */
+	ret = tq_adma2_prebuild_io(p, node);
+exit:
+	DbgInfo(MODULE_TQ_DMA, FEATURE_RW_TRACE, NOT_TO_RAM, "Exit %s\n",
+		__func__);
+	return ret;
+}
+
+/*
+ *
+ * Function Name: tq_adma2_sdmalike_build_io
+ *
+ * Abstract:
+ *
+ *		build sdma-like io
+ *
+ * Input:
+ *
+ *		void * p [in]: Pointer to the bht_dev_ext_t *
+ *		node_t *node [in] : the node need build
+ *
+ * Output:
+ *
+ *		None.
+ *
+ * Return value:
+ *
+ *		TRUE: build ok
+ * Notes:
+ *
+ * Caller:
+ *
+ */
+bool tq_adma2_sdmalike_copy(void *p, node_t *node)
+{
+	srb_ext_t *pext = node_2_srb_ext(node);
+	request_t *req = &pext->req;
+
+	/* copy for write case */
+	if (req->data_dir == DATA_DIR_OUT) {
+		os_memcpy(node->data_tbl.va, req->srb_buff,
+			  req->tag_req_t.sec_cnt * SD_BLOCK_LEN);
+	}
+
+	return TRUE;
+
+}
+
+static bool tq_adma2_sdmalike_build_io(void *p, node_t *node)
+{
+#if (!CFG_OS_LINUX)
+	tq_adma2_sdmalike_copy(p, node);
+#endif
+	return tq_adma2_build_io(p, node);
+
+}
+
+/*
+ *
+ * Function Name: tq_adma2_sdmalike_mode_init
+ *
+ * Abstract:
+ *
+ *		init TQ ADMA2 sdma-like mode cbs
+ *
+ * Input:
+ *
+ *		transfer_cb_t *ops [in]: Pointer to the transfer_cb_t
+ *
+ * Output:
+ *
+ *		None.
+ *
+ * Return value:
+ *
+ *		TRUE: init ok
+ * Notes:
+ *
+ * Caller:
+ *
+ */
+bool tq_adma2_sdmalike_mode_init(transfer_cb_t *ops)
+{
+	DbgInfo(MODULE_TQ_DMA, FEATURE_DRIVER_INIT, NOT_TO_RAM, "Enter %s\n",
+		__func__);
+	os_memset(ops, 0, sizeof(transfer_cb_t));
+	tq_adma2_mode_init(ops);
+	ops->build_io = tq_adma2_sdmalike_build_io;
+	ops->prebuild_io = tq_adma2_sdmalike_prebuild_io;
+	DbgInfo(MODULE_TQ_DMA, FEATURE_DRIVER_INIT, NOT_TO_RAM, "Exit %s\n",
+		__func__);
+	return TRUE;
+}
+
+/*
+ *
+ * Function Name: tq_adma2_inf_sdmalike_build_io
+ *
+ * Abstract:
+ *
+ *		build adma2 infinite sdma-like io
+ *
+ * Input:
+ *
+ *		void * p [in]: Pointer to the bht_dev_ext_t
+ *		 node_t *node [in]:pointer to node which build for
+ *
+ *
+ * Output:
+ *
+ *		None.
+ *
+ * Return value:
+ *
+ *		TRUE: build ok
+ * Notes:
+ *
+ * Caller:
+ *
+ */
+static bool tq_adma2_inf_sdmalike_build_io(void *p, node_t *node)
+{
+#if (!CFG_OS_LINUX)
+	tq_adma2_sdmalike_copy(p, node);
+#endif
+	return tq_adma2_inf_build_io(p, node);
+
+}
+
+/*
+ *
+ * Function Name: tq_adma2_inf_sdmalike_mode_init
+ *
+ * Abstract:
+ *
+ *		init TQ ADMA2 infinite sdma-like mode cbs
+ *
+ * Input:
+ *
+ *		transfer_cb_t *ops [in]: Pointer to the transfer_cb_t
+ *
+ * Output:
+ *
+ *		None.
+ *
+ * Return value:
+ *
+ *		TRUE: init ok
+ * Notes:
+ *
+ * Caller:
+ *
+ */
+bool tq_adma2_inf_sdmalike_mode_init(transfer_cb_t *ops)
+{
+	DbgInfo(MODULE_TQ_DMA, FEATURE_DRIVER_INIT, NOT_TO_RAM, "Enter %s\n",
+		__func__);
+	os_memset(ops, 0, sizeof(transfer_cb_t));
+	tq_adma2_sdmalike_mode_init(ops);
+	ops->build_io = tq_adma2_inf_sdmalike_build_io;
+	ops->issue_transfer = tq_adma2_inf_send_command;
+	ops->unload = tq_adma2_inf_unload;
+	DbgInfo(MODULE_TQ_DMA, FEATURE_DRIVER_INIT, NOT_TO_RAM, "Exit %s\n",
+		__func__);
+	return TRUE;
+}
+
+/*
+ *
+ * Function Name: tq_adma2_sdmalike_prebuild_io
+ *
+ * Abstract:
+ *
+ *		prebuild sdma-like mode adma2 io
+ *
+ * Input:
+ *
+ *		void * p [in]: Pointer to the bht_dev_ext_t *
+ *		node_t *node [in] : the node need prebuild
+ *
+ * Output:
+ *
+ *		None.
+ *
+ * Return value:
+ *
+ *		TRUE: build ok
+ * Notes:
+ *
+ * Caller:
+ *
+ */
+static bool tq_adma3_sdmalike_prebuild_io(void *p, node_t *node)
+{
+	srb_ext_t *pext = node_2_srb_ext(node);
+	request_t *req = &pext->req;
+	dma_desc_buf_t *pdma = 0;
+	bool ret = TRUE;
+
+	DbgInfo(MODULE_TQ_DMA, FEATURE_RW_TRACE, NOT_TO_RAM, "Enter %s\n",
+		__func__);
+
+	/* 1. get sdma like buf address */
+	pdma = &node->data_tbl;
+
+	/* 2. mark it's sdma-like node */
+	node->sdma_like = 1;
+
+	/* 3. generate sdma like sglist table */
+
+	if (gen_sdma_like_sgl(req, pdma) == FALSE) {
+		DbgErr("%s sdma like sgl failed\n", __func__);
+		ret = FALSE;
+		goto exit;
+	}
+
+	/* 4. call adma3 build API */
+	ret = tq_adma3_prebuild_io(p, node);
+exit:
+	DbgInfo(MODULE_TQ_DMA, FEATURE_RW_TRACE, NOT_TO_RAM, "Exit %s ret=%x\n",
+		__func__, ret);
+	return ret;
+}
+
+/*
+ *
+ * Function Name: tq_adma3_sdmalike_build_io
+ *
+ * Abstract:
+ *
+ *		build adma3 sdma-like io
+ *
+ * Input:
+ *
+ *		void * p [in]: Pointer to the bht_dev_ext_t *
+ *		node_t *node [in] : the node need build
+ *
+ * Output:
+ *
+ *		None.
+ *
+ * Return value:
+ *
+ *		TRUE: build ok
+ * Notes:
+ *
+ * Caller:
+ *
+ */
+static bool tq_adma3_sdmalike_build_io(void *p, node_t *node)
+{
+	if (tq_adma3_sdmalike_prebuild_io(p, node) == FALSE)
+		return FALSE;
+#if (!CFG_OS_LINUX)
+	tq_adma2_sdmalike_copy(p, node);
+#endif
+	return tq_adma3_build_io(p, node);
+
+}
+
+/*
+ *
+ * Function Name: tq_adma3_sdmalike_mode_init
+ *
+ * Abstract:
+ *
+ *		init TQ ADMA2 sdma-like mode cbs
+ *
+ * Input:
+ *
+ *		transfer_cb_t *ops [in]: Pointer to the transfer_cb_t
+ *
+ * Output:
+ *
+ *		None.
+ *
+ * Return value:
+ *
+ *		TRUE: init ok
+ * Notes:
+ *
+ * Caller:
+ *
+ */
+bool tq_adma3_sdmalike_mode_init(transfer_cb_t *ops)
+{
+	DbgInfo(MODULE_TQ_DMA, FEATURE_DRIVER_INIT, NOT_TO_RAM, "Enter %s\n",
+		__func__);
+	os_memset(ops, 0, sizeof(transfer_cb_t));
+	tq_adma3_mode_init(ops);
+	ops->build_io = tq_adma3_sdmalike_build_io;
+	ops->prebuild_io = NULL;
+	DbgInfo(MODULE_TQ_DMA, FEATURE_DRIVER_INIT, NOT_TO_RAM, "Exit %s\n",
+		__func__);
+	return TRUE;
+}
diff --git a/drivers/scsi/bht/tagqueue/tqpolicy.c b/drivers/scsi/bht/tagqueue/tqpolicy.c
new file mode 100644
index 000000000000..6946c57e21ce
--- /dev/null
+++ b/drivers/scsi/bht/tagqueue/tqpolicy.c
@@ -0,0 +1,210 @@ 
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2014 BHT Inc.
+ *
+ * File Name: tqpolicy.c
+ *
+ * Abstract: handle tagqueue policy for transfer mode
+ *
+ * Version: 1.00
+ *
+ * Author: Chuanjin
+ *
+ * Environment:	OS Independent
+ *
+ * History:
+ *
+ * 9/4/2014		Creation	Chuanjin
+ */
+
+#include "../include/basic.h"
+#include "../include/cardapi.h"
+#include "../include/tqapi.h"
+#include "../include/debug.h"
+#include "tq_trans_api.h"
+#include "../include/util.h"
+#include "../include/cmdhandler.h"
+
+/*
+ * consider below condition:
+ * 1.merge enable
+ * 2.infinite transfer enable
+ * 3.DMA mode: ADMA3 support multi IO
+ */
+
+/*
+ * if return TRUE, mean only build one IO.
+ * if return FALSE, maybe build more then one IO for one transfer.
+ */
+bool tag_queue_policy_break(bht_dev_ext_t *pdx)
+{
+	u32 dma_mode = pdx->tag_queue.cur_dma_mode;
+	u32 merge_enable =
+	    pdx->cfg->host_item.test_tag_queue_capability.enable_srb_merge;
+
+	switch (dma_mode) {
+	case CFG_TRANS_MODE_SDMA:
+		return TRUE;
+	case CFG_TRANS_MODE_ADMA2:
+	case CFG_TRANS_MODE_ADMA2_SDMA_LIKE:
+		if (merge_enable == TRUE)
+			return FALSE;
+		else
+			return TRUE;
+	case CFG_TRANS_MODE_ADMA3:
+	case CFG_TRANS_MODE_ADMA3_SDMA_LIKE:
+		return FALSE;
+	default:
+		return TRUE;
+	}
+}
+
+static bool decision_policy_calculus(decision_mgr *mgr, bool bval)
+{
+	int i = 0;
+	int sum = 0;
+	/* add */
+	mgr->slot[mgr->idx % mgr->scope] = bval;
+	mgr->idx++;
+
+	for (i = 0; i < mgr->scope; i++) {
+		if (mgr->slot[i])
+			sum++;
+	}
+
+	if (mgr->up_flg == TRUE) {
+		if (sum <= mgr->low_thd) {
+			mgr->up_flg = FALSE;
+			mgr->out = FALSE;
+			goto exit;
+		}
+	} else {
+		if (sum >= mgr->up_thd) {
+			mgr->up_flg = TRUE;
+			mgr->out = TRUE;
+			goto exit;
+
+		}
+	}
+exit:
+	DbgInfo(MODULE_TQ_FLOW, FEATURE_RW_TRACE, NOT_TO_RAM, "sum %d %d\n",
+		sum, mgr->out);
+	return mgr->out;
+}
+
+void se2_dma_mode_selector(void *p, bool flg)
+{
+	tag_queue_t *tq = (tag_queue_t *) p;
+
+	if (flg == FALSE) {
+		if (tq->cfg_dma_mode == CFG_TRANS_MODE_ADMA_MIX_SDMA_LIKE) {
+			os_atomic_set(&tq->target_dma_mode,
+				      CFG_TRANS_MODE_ADMA3_SDMA_LIKE);
+		} else {
+			os_atomic_set(&tq->target_dma_mode,
+				      CFG_TRANS_MODE_ADMA3);
+		}
+	} else {
+		if (tq->cfg_dma_mode == CFG_TRANS_MODE_ADMA_MIX_SDMA_LIKE) {
+			os_atomic_set(&tq->target_dma_mode,
+				      CFG_TRANS_MODE_ADMA2_SDMA_LIKE);
+		} else {
+			os_atomic_set(&tq->target_dma_mode,
+				      CFG_TRANS_MODE_ADMA2);
+		}
+	}
+}
+
+void legacy_infinite_dma_mode_selector(void *p, bool flg)
+{
+	tag_queue_t *tq = (tag_queue_t *) p;
+
+	if (flg == FALSE) {
+		if (tq->cfg_dma_mode == CFG_TRANS_MODE_ADMA_MIX_SDMA_LIKE) {
+			os_atomic_set(&tq->target_dma_mode,
+				      CFG_TRANS_MODE_ADMA2_ONLY_SDMA_LIKE);
+		} else {
+			os_atomic_set(&tq->target_dma_mode,
+				      CFG_TRANS_MODE_ADMA2_ONLY);
+		}
+	} else {
+		if (tq->cfg_dma_mode == CFG_TRANS_MODE_ADMA_MIX_SDMA_LIKE) {
+			os_atomic_set(&tq->target_dma_mode,
+				      CFG_TRANS_MODE_ADMA2_SDMA_LIKE);
+		} else {
+			os_atomic_set(&tq->target_dma_mode,
+				      CFG_TRANS_MODE_ADMA2);
+		}
+	}
+}
+
+void tq_dma_decision_init(decision_mgr *mgr, e_chip_type chip_id,
+			  int scope_size, int up_threshold, int low_threshold)
+{
+	DbgInfo(MODULE_TQ_FLOW, FEATURE_DRIVER_INIT, NOT_TO_RAM,
+		"Enter %s chip_id %d\n", __func__, chip_id);
+	memset(mgr, 0, sizeof(decision_mgr));
+
+	if (scope_size > MAX_DECISION_SCOPE_SIZE)
+		scope_size = MAX_DECISION_SCOPE_SIZE;
+
+	if (up_threshold > MAX_DECISION_SCOPE_SIZE)
+		up_threshold = MAX_DECISION_SCOPE_SIZE;
+
+	if (low_threshold > up_threshold)
+		low_threshold = up_threshold;
+
+	mgr->scope = scope_size;
+	mgr->up_thd = up_threshold;
+	mgr->low_thd = low_threshold;
+	mgr->up_flg = FALSE;
+	/* chip related */
+	switch (chip_id) {
+	case CHIP_SEABIRD:
+	case CHIP_FUJIN2:
+	case CHIP_SEAEAGLE:
+		mgr->dma_selector_cb = legacy_infinite_dma_mode_selector;
+		break;
+	case CHIP_SEAEAGLE2:
+	case CHIP_GG8:
+	case CHIP_ALBATROSS:
+		mgr->dma_selector_cb = se2_dma_mode_selector;
+		break;
+	default:
+		mgr->dma_selector_cb = 0;
+		break;
+	}
+	DbgInfo(MODULE_TQ_FLOW, FEATURE_DRIVER_INIT, NOT_TO_RAM, "Exit %s\n",
+		__func__);
+}
+
+void tq_dma_decision_policy(tag_queue_t *tq, sd_card_t *card,
+			    request_t *request)
+{
+	bool bcont = FALSE;
+	decision_mgr *mgr = &tq->decision;
+
+	bcont =
+	    tq_judge_request_continuous(card_is_low_capacity(card),
+					mgr->last_req.data_dir,
+					mgr->last_req.sec_addr,
+					mgr->last_req.sec_cnt,
+					request->data_dir,
+					request->tag_req_t.sec_addr);
+	/* update */
+	mgr->last_req.data_dir = request->data_dir;
+	mgr->last_req.sec_addr = request->tag_req_t.sec_addr;
+	mgr->last_req.sec_cnt = request->tag_req_t.sec_cnt;
+	DbgInfo(MODULE_TQ_FLOW, FEATURE_RW_TRACE, NOT_TO_RAM,
+		"Enter %s IO:dir:%d addr:0x%x ,cnt:0x%x (next:0x%x)\n",
+		__func__, request->data_dir, request->tag_req_t.sec_addr,
+		request->tag_req_t.sec_cnt,
+		request->tag_req_t.sec_addr + request->tag_req_t.sec_cnt);
+
+	if (mgr->dma_selector_cb) {
+		bool dflg = decision_policy_calculus(&tq->decision, bcont);
+
+		mgr->dma_selector_cb(tq, dflg);
+	}
+
+}
diff --git a/drivers/scsi/bht/tagqueue/tqsdma.c b/drivers/scsi/bht/tagqueue/tqsdma.c
new file mode 100644
index 000000000000..dad28d23f714
--- /dev/null
+++ b/drivers/scsi/bht/tagqueue/tqsdma.c
@@ -0,0 +1,285 @@ 
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2014 BHT Inc.
+ *
+ * File Name: tqsdma.c
+ *
+ * Abstract: handle tagqueue sdma transfer cb ops
+ *
+ * Version: 1.00
+ *
+ * Author: Chuanjin
+ *
+ * Environment:	OS Independent
+ *
+ * History:
+ *
+ * 9/11/2014		Creation	Chuanjin
+ */
+
+#include "../include/basic.h"
+#include "../include/tqapi.h"
+#include "../include/debug.h"
+#include "../include/cmdhandler.h"
+#include "../include/card.h"
+#include "tq_util.h"
+#include "tq_trans_api.h"
+#include "../include/util.h"
+#include "../include/cardapi.h"
+
+/*
+ *
+ * Function Name: tq_sdma_prebuild_io
+ *
+ * Abstract:
+ *
+ *		prebuild SDMA CMD argument
+ *
+ * Input:
+ *
+ *		void * p [in]: Pointer to the bht_dev_ext_t *
+ *		node_t *node [in] : the node need prebuild
+ *
+ * Output:
+ *
+ *		None.
+ *
+ * Return value:
+ *
+ *		TRUE: build ok
+ * Notes:
+ *
+ * Caller:
+ *
+ */
+bool tq_sdma_prebuild_io(void *p, node_t *node)
+{
+	bht_dev_ext_t *pdx = (bht_dev_ext_t *) p;
+	srb_ext_t *pext = node_2_srb_ext(node);
+	request_t *req = &pext->req;
+	sd_command_t *cmd = &pext->cmd;
+	bool ret = FALSE;
+
+	DbgInfo(MODULE_TQ_DMA, FEATURE_RW_TRACE, NOT_TO_RAM, "Enter %s\n",
+		__func__);
+
+	/* check parameters */
+	if (req->srb_buff == 0) {
+		DbgErr("%s null srb buf\n", __func__);
+		ret = FALSE;
+		goto exit;
+	}
+
+	/* 1.build cmd arg */
+	os_memset(cmd, 0, sizeof(sd_command_t));
+	req_build_cmd(node->card, cmd, req);
+	cmd->cmd_flag |= CMD_FLG_SDMA;
+	cmd_set_auto_cmd_flag(&pdx->card, &cmd->cmd_flag);
+
+	ret = TRUE;
+
+exit:
+	DbgInfo(MODULE_TQ_DMA, FEATURE_RW_TRACE, NOT_TO_RAM, "Exit %s\n",
+		__func__);
+	return ret;
+}
+
+/*
+ *
+ * Function Name: tq_sdma_build_io
+ *
+ * Abstract:
+ *
+ *		build SDMA CMD ,such as  dma resource
+ *
+ * Input:
+ *
+ *		void * p [in]: Pointer to the bht_dev_ext_t *
+ *		node_t *node [in] : the node need build
+ *
+ * Output:
+ *
+ *		None.
+ *
+ * Return value:
+ *
+ *		TRUE: build ok
+ * Notes:
+ *
+ * Caller:
+ *
+ */
+bool tq_sdma_build_io(void *p, node_t *node)
+{
+	bht_dev_ext_t *pdx = (bht_dev_ext_t *) p;
+	req_queue_t *rq = pdx->tag_queue.wq_build;
+	srb_ext_t *pext = node_2_srb_ext(node);
+	request_t *req = &pext->req;
+	sd_command_t *cmd = &pext->cmd;
+	sd_data_t *data = &rq->sd_data;
+	bool ret = FALSE;
+	u32 sdma_bd_len = get_sdma_boudary_size(pdx->cfg);
+	u32 min_size = 0;
+	data_dma_mng_t *mgr = &data->data_mng;
+	dma_desc_buf_t dma;
+
+	DbgInfo(MODULE_TQ_DMA, FEATURE_RW_TRACE, NOT_TO_RAM, "Enter %s\n",
+		__func__);
+	if (tq_sdma_prebuild_io(p, node) == FALSE) {
+		DbgErr("%s prebuild io failed\n", __func__);
+		ret = FALSE;
+		goto exit;
+	}
+
+	/* 1.bind cmd to TQ current queue(can't bind when prebuild stage for sync) */
+	rq->priv = cmd;
+	/* 2.bind data to cmd */
+	cmd->data = &rq->sd_data;
+	data->dir = req->data_dir;
+	mgr->total_bytess = req->tag_req_t.sec_cnt * SD_BLOCK_LEN;
+	mgr->srb_buffer[0].buff = req->srb_buff;
+	mgr->offset = 0;
+	/* fix to 1 */
+	mgr->srb_cnt = 1;
+
+	/* 3.cfg system addr */
+
+	/* align dma buffer */
+#define SDMA_BOUNDARY_MAX_SIZE (512*1024)
+	if (sdma_bd_len > SDMA_BOUNDARY_MAX_SIZE) {
+		DbgErr("%s boundary over max %x\n", __func__, sdma_bd_len);
+		ret = FALSE;
+		goto exit;
+	} else {
+		dma = node->data_tbl;
+		if (dma_align(&dma, sdma_bd_len) == FALSE) {
+			DbgErr("%s align failed\n", __func__);
+			ret = FALSE;
+			goto exit;
+		}
+	}
+	data->data_mng.sys_addr = dma.pa;
+	/* set host driver buffer */
+	data->data_mng.driver_buff = (byte *) dma.va;
+	/* for write data to card,need fill data first before transfer */
+	if (cmd->data->dir == DATA_DIR_OUT) {
+		min_size = os_min(sdma_bd_len, mgr->total_bytess);
+		os_memcpy(mgr->driver_buff,
+			  mgr->srb_buffer[0].buff + mgr->offset, min_size);
+		mgr->offset += min_size;
+	}
+	ret = TRUE;
+exit:
+	DbgInfo(MODULE_TQ_DMA, FEATURE_RW_TRACE, NOT_TO_RAM, "Exit %s ret=%d\n",
+		__func__, ret);
+	return ret;
+}
+
+/*
+ *
+ * Function Name: tq_sdma_send_command
+ *
+ * Abstract:
+ *
+ *		issue SDMA CMD
+ * Input:
+ *
+ *		void * p [in]: Pointer to the bht_dev_ext_t *
+ *
+ * Output:
+ *
+ *		None.
+ *
+ * Return value:
+ *
+ *		TRUE: issue ok
+ * Notes:
+ *		for SMDA mode, now no support auto CMD23,
+ *		driver issue CMD23 before issue read/write CMD.
+ * Caller:
+ *
+ */
+bool tq_sdma_send_command(void *p)
+{
+
+	bht_dev_ext_t *pdx = (bht_dev_ext_t *) p;
+	sd_card_t *card = &(pdx->card);
+	tag_queue_t *ptq = &pdx->tag_queue;
+	req_queue_t *rq = pdx->tag_queue.wq_cur;
+	host_cmd_req_t *cmd_irq_req = &ptq->cmd_req;
+	sd_command_t *pcmd = (sd_command_t *) rq->priv;
+	bool ret = FALSE;
+	sd_command_t cmd23;
+
+	DbgInfo(MODULE_TQ_DMA, FEATURE_RW_TRACE, NOT_TO_RAM, "Enter %s\n",
+		__func__);
+	/* bind card */
+	cmd_irq_req->card = card;
+	/* set cmd type */
+	pcmd->sd_cmd = 1;
+
+	/* generate reg */
+
+	/* SDMA don't use auto CMD23 */
+	if ((card->card_type != CARD_UHS2) && (pcmd->cmd_flag & CMD_FLG_AUTO23)) {
+		/* clear auto23 flag */
+		pcmd->cmd_flag &= ~CMD_FLG_AUTO23;
+		ret =
+		    card_set_blkcnt(card, &cmd23,
+				    pcmd->data->data_mng.total_bytess /
+				    SD_BLOCK_LEN);
+		if (ret == FALSE) {
+			DbgErr("%s issue cmd23 failed\n", __func__);
+			goto exit;
+		}
+	}
+
+	if (cmd_generate_reg(card, pcmd) == FALSE) {
+		DbgErr("%s cmd generate reg error\n", __func__);
+		ret = FALSE;
+		goto exit;
+	}
+	/* issue cmd */
+	ret = cmd_execute_sync2(card, pcmd, cmd_irq_req, tag_queue_isr);
+exit:
+	DbgInfo(MODULE_TQ_DMA, FEATURE_RW_TRACE, NOT_TO_RAM, "Exit %s ret=%d\n",
+		__func__, ret);
+	return ret;
+
+}
+
+/*
+ *
+ * Function Name: tq_sdma_mode_init
+ *
+ * Abstract:
+ *
+ *		init sdma mode
+ *
+ * Input:
+ *
+ *		transfer_cb_t *ops [in]: Pointer to the callback
+ *
+ * Output:
+ *
+ *		None.
+ *
+ * Return value:
+ *
+ *		TRUE: init
+ * Notes:
+ *		now, SDMA no support infinite  & merge feature.
+ * Caller:
+ *
+ */
+bool tq_sdma_mode_init(transfer_cb_t *ops)
+{
+	DbgInfo(MODULE_TQ_DMA, FEATURE_DRIVER_INIT, NOT_TO_RAM, "Enter %s\n",
+		__func__);
+	os_memset(ops, 0, sizeof(transfer_cb_t));
+	ops->build_io = tq_sdma_build_io;
+	ops->issue_transfer = tq_sdma_send_command;
+	DbgInfo(MODULE_TQ_DMA, FEATURE_DRIVER_INIT, NOT_TO_RAM, "Exit %s\n",
+		__func__);
+	return TRUE;
+}