drivers/net/wireless/bcmdhd/dhd_bta.c - kernel/msm.git - Git at Google

 /*
  * BT-AMP support routines
  *
  * Copyright (C) 1999-2014, Broadcom Corporation
  *
  *      Unless you and Broadcom execute a separate written software license
  * agreement governing use of this software, this software is licensed to you
  * under the terms of the GNU General Public License version 2 (the "GPL"),
  * available at http://www.broadcom.com/licenses/GPLv2.php, with the
  * following added to such license:
  *
  *      As a special exception, the copyright holders of this software give you
  * permission to link this software with independent modules, and to copy and
  * distribute the resulting executable under terms of your choice, provided that
  * you also meet, for each linked independent module, the terms and conditions of
  * the license of that module.  An independent module is a module which is not
  * derived from this software.  The special exception does not apply to any
  * modifications of the software.
  *
  *      Notwithstanding the above, under no circumstances may you combine this
  * software in any way with any other Broadcom software provided under a license
  * other than the GPL, without Broadcom's express prior written consent.
  *
  * $Id: dhd_bta.c 434434 2013-11-06 07:16:02Z $
  */
 #error "WLBTAMP is not defined"

 #include <typedefs.h>
 #include <osl.h>
 #include <bcmcdc.h>
 #include <bcmutils.h>
 #include <bcmendian.h>
 #include <proto/802.11.h>
 #include <proto/802.11_bta.h>
 #include <proto/bt_amp_hci.h>
 #include <dngl_stats.h>
 #include <dhd.h>
 #include <dhd_bus.h>
 #include <dhd_proto.h>
 #include <dhdioctl.h>
 #include <dhd_dbg.h>

 #include <dhd_bta.h>


 #ifdef SEND_HCI_CMD_VIA_IOCTL
 #define BTA_HCI_CMD_MAX_LEN HCI_CMD_PREAMBLE_SIZE + HCI_CMD_DATA_SIZE

 /* Send HCI cmd via wl iovar HCI_cmd to the dongle. */
 int
 dhd_bta_docmd(dhd_pub_t *pub, void *cmd_buf, uint cmd_len)
 {
 	amp_hci_cmd_t *cmd = (amp_hci_cmd_t *)cmd_buf;
 	uint8 buf[BTA_HCI_CMD_MAX_LEN + 16];
 	uint len = sizeof(buf);
 	wl_ioctl_t ioc;

 	if (cmd_len < HCI_CMD_PREAMBLE_SIZE)
 		return BCME_BADLEN;

 	if ((uint)cmd->plen + HCI_CMD_PREAMBLE_SIZE > cmd_len)
 		return BCME_BADLEN;

 	len = bcm_mkiovar("HCI_cmd",
 		(char *)cmd, (uint)cmd->plen + HCI_CMD_PREAMBLE_SIZE, (char *)buf, len);


 	memset(&ioc, 0, sizeof(ioc));

 	ioc.cmd = WLC_SET_VAR;
 	ioc.buf = buf;
 	ioc.len = len;
 	ioc.set = TRUE;

 	return dhd_wl_ioctl(pub, &ioc, ioc.buf, ioc.len);
 }
 #else /* !SEND_HCI_CMD_VIA_IOCTL */

 static void
 dhd_bta_flush_hcidata(dhd_pub_t *pub, uint16 llh)
 {
 	int prec;
 	struct pktq *q;
 	uint count = 0;

 	q = dhd_bus_txq(pub->bus);
 	if (q == NULL)
 		return;

 	DHD_BTA(("dhd: flushing HCI ACL data for logical link %u...\n", llh));

 	dhd_os_sdlock_txq(pub);

 	/* Walk through the txq and toss all HCI ACL data packets */
 	PKTQ_PREC_ITER(q, prec) {
 		void *head_pkt = NULL;

 		while (pktq_ppeek(q, prec) != head_pkt) {
 			void *pkt = pktq_pdeq(q, prec);
 			int ifidx;

 			dhd_prot_hdrpull(pub, &ifidx, pkt, NULL, NULL);

 			if (PKTLEN(pub->osh, pkt) >= RFC1042_HDR_LEN) {
 				struct ether_header *eh =
 				        (struct ether_header *)PKTDATA(pub->osh, pkt);

 				if (ntoh16(eh->ether_type) < ETHER_TYPE_MIN) {
 					struct dot11_llc_snap_header *lsh =
 					        (struct dot11_llc_snap_header *)&eh[1];

 					if (bcmp(lsh, BT_SIG_SNAP_MPROT,
 					         DOT11_LLC_SNAP_HDR_LEN - 2) == 0 &&
 					    ntoh16(lsh->type) == BTA_PROT_L2CAP) {
 						amp_hci_ACL_data_t *ACL_data =
 						        (amp_hci_ACL_data_t *)&lsh[1];
 						uint16 handle = ltoh16(ACL_data->handle);

 						if (HCI_ACL_DATA_HANDLE(handle) == llh) {
 							PKTFREE(pub->osh, pkt, TRUE);
 							count ++;
 							continue;
 						}
 					}
 				}
 			}

 			dhd_prot_hdrpush(pub, ifidx, pkt);

 			if (head_pkt == NULL)
 				head_pkt = pkt;
 			pktq_penq(q, prec, pkt);
 		}
 	}

 	dhd_os_sdunlock_txq(pub);

 	DHD_BTA(("dhd: flushed %u packet(s) for logical link %u...\n", count, llh));
 }

 /* Handle HCI cmd locally.
  * Return 0: continue to send the cmd across SDIO
  *        < 0: stop, fail
  *        > 0: stop, succuess
  */
 static int
 _dhd_bta_docmd(dhd_pub_t *pub, amp_hci_cmd_t *cmd)
 {
 	int status = 0;

 	switch (ltoh16_ua((uint8 *)&cmd->opcode)) {
 	case HCI_Enhanced_Flush: {
 		eflush_cmd_parms_t *cmdparms = (eflush_cmd_parms_t *)cmd->parms;
 		dhd_bta_flush_hcidata(pub, ltoh16_ua(cmdparms->llh));
 		break;
 	}
 	default:
 		break;
 	}

 	return status;
 }

 /* Send HCI cmd encapsulated in BT-SIG frame via data channel to the dongle. */
 int
 dhd_bta_docmd(dhd_pub_t *pub, void *cmd_buf, uint cmd_len)
 {
 	amp_hci_cmd_t *cmd = (amp_hci_cmd_t *)cmd_buf;
 	struct ether_header *eh;
 	struct dot11_llc_snap_header *lsh;
 	osl_t *osh = pub->osh;
 	uint len;
 	void *p;
 	int status;

 	if (cmd_len < HCI_CMD_PREAMBLE_SIZE) {
 		DHD_ERROR(("dhd_bta_docmd: short command, cmd_len %u\n", cmd_len));
 		return BCME_BADLEN;
 	}

 	if ((len = (uint)cmd->plen + HCI_CMD_PREAMBLE_SIZE) > cmd_len) {
 		DHD_ERROR(("dhd_bta_docmd: malformed command, len %u cmd_len %u\n",
 		           len, cmd_len));
 		/* return BCME_BADLEN; */
 	}

 	p = PKTGET(osh, pub->hdrlen + RFC1042_HDR_LEN + len, TRUE);
 	if (p == NULL) {
 		DHD_ERROR(("dhd_bta_docmd: out of memory\n"));
 		return BCME_NOMEM;
 	}


 	/* intercept and handle the HCI cmd locally */
 	if ((status = _dhd_bta_docmd(pub, cmd)) > 0)
 		return 0;
 	else if (status < 0)
 		return status;

 	/* copy in HCI cmd */
 	PKTPULL(osh, p, pub->hdrlen + RFC1042_HDR_LEN);
 	bcopy(cmd, PKTDATA(osh, p), len);

 	/* copy in partial Ethernet header with BT-SIG LLC/SNAP header */
 	PKTPUSH(osh, p, RFC1042_HDR_LEN);
 	eh = (struct ether_header *)PKTDATA(osh, p);
 	bzero(eh->ether_dhost, ETHER_ADDR_LEN);
 	ETHER_SET_LOCALADDR(eh->ether_dhost);
 	bcopy(&pub->mac, eh->ether_shost, ETHER_ADDR_LEN);
 	eh->ether_type = hton16(len + DOT11_LLC_SNAP_HDR_LEN);
 	lsh = (struct dot11_llc_snap_header *)&eh[1];
 	bcopy(BT_SIG_SNAP_MPROT, lsh, DOT11_LLC_SNAP_HDR_LEN - 2);
 	lsh->type = 0;

 	return dhd_sendpkt(pub, 0, p);
 }
 #endif /* !SEND_HCI_CMD_VIA_IOCTL */

 /* Send HCI ACL data to dongle via data channel */
 int
 dhd_bta_tx_hcidata(dhd_pub_t *pub, void *data_buf, uint data_len)
 {
 	amp_hci_ACL_data_t *data = (amp_hci_ACL_data_t *)data_buf;
 	struct ether_header *eh;
 	struct dot11_llc_snap_header *lsh;
 	osl_t *osh = pub->osh;
 	uint len;
 	void *p;

 	if (data_len < HCI_ACL_DATA_PREAMBLE_SIZE) {
 		DHD_ERROR(("dhd_bta_tx_hcidata: short data_buf, data_len %u\n", data_len));
 		return BCME_BADLEN;
 	}

 	if ((len = (uint)ltoh16(data->dlen) + HCI_ACL_DATA_PREAMBLE_SIZE) > data_len) {
 		DHD_ERROR(("dhd_bta_tx_hcidata: malformed hci data, len %u data_len %u\n",
 		           len, data_len));
 		/* return BCME_BADLEN; */
 	}

 	p = PKTGET(osh, pub->hdrlen + RFC1042_HDR_LEN + len, TRUE);
 	if (p == NULL) {
 		DHD_ERROR(("dhd_bta_tx_hcidata: out of memory\n"));
 		return BCME_NOMEM;
 	}


 	/* copy in HCI ACL data header and HCI ACL data */
 	PKTPULL(osh, p, pub->hdrlen + RFC1042_HDR_LEN);
 	bcopy(data, PKTDATA(osh, p), len);

 	/* copy in partial Ethernet header with BT-SIG LLC/SNAP header */
 	PKTPUSH(osh, p, RFC1042_HDR_LEN);
 	eh = (struct ether_header *)PKTDATA(osh, p);
 	bzero(eh->ether_dhost, ETHER_ADDR_LEN);
 	bcopy(&pub->mac, eh->ether_shost, ETHER_ADDR_LEN);
 	eh->ether_type = hton16(len + DOT11_LLC_SNAP_HDR_LEN);
 	lsh = (struct dot11_llc_snap_header *)&eh[1];
 	bcopy(BT_SIG_SNAP_MPROT, lsh, DOT11_LLC_SNAP_HDR_LEN - 2);
 	lsh->type = HTON16(BTA_PROT_L2CAP);

 	return dhd_sendpkt(pub, 0, p);
 }

 /* txcomplete callback */
 void
 dhd_bta_tx_hcidata_complete(dhd_pub_t *dhdp, void *txp, bool success)
 {
 	uint8 *pktdata = (uint8 *)PKTDATA(dhdp->osh, txp);
 	amp_hci_ACL_data_t *ACL_data = (amp_hci_ACL_data_t *)(pktdata + RFC1042_HDR_LEN);
 	uint16 handle = ltoh16(ACL_data->handle);
 	uint16 llh = HCI_ACL_DATA_HANDLE(handle);

 	wl_event_msg_t event;
 	uint8 data[HCI_EVT_PREAMBLE_SIZE + sizeof(num_completed_data_blocks_evt_parms_t)];
 	amp_hci_event_t *evt;
 	num_completed_data_blocks_evt_parms_t *parms;

 	uint16 len = HCI_EVT_PREAMBLE_SIZE + sizeof(num_completed_data_blocks_evt_parms_t);

 	/* update the event struct */
 	memset(&event, 0, sizeof(event));
 	event.version = hton16(BCM_EVENT_MSG_VERSION);
 	event.event_type = hton32(WLC_E_BTA_HCI_EVENT);
 	event.status = 0;
 	event.reason = 0;
 	event.auth_type = 0;
 	event.datalen = hton32(len);
 	event.flags = 0;

 	/* generate Number of Completed Blocks event */
 	evt = (amp_hci_event_t *)data;
 	evt->ecode = HCI_Number_of_Completed_Data_Blocks;
 	evt->plen = sizeof(num_completed_data_blocks_evt_parms_t);

 	parms = (num_completed_data_blocks_evt_parms_t *)evt->parms;
 	htol16_ua_store(dhdp->maxdatablks, (uint8 *)&parms->num_blocks);
 	parms->num_handles = 1;
 	htol16_ua_store(llh, (uint8 *)&parms->completed[0].handle);
 	parms->completed[0].pkts = 1;
 	parms->completed[0].blocks = 1;

 	dhd_sendup_event_common(dhdp, &event, data);
 }

 /* event callback */
 void
 dhd_bta_doevt(dhd_pub_t *dhdp, void *data_buf, uint data_len)
 {
 	amp_hci_event_t *evt = (amp_hci_event_t *)data_buf;

 	ASSERT(dhdp);
 	ASSERT(evt);

 	switch (evt->ecode) {
 	case HCI_Command_Complete: {
 		cmd_complete_parms_t *parms = (cmd_complete_parms_t *)evt->parms;
 		switch (ltoh16_ua((uint8 *)&parms->opcode)) {
 		case HCI_Read_Data_Block_Size: {
 			read_data_block_size_evt_parms_t *parms2 =
 			        (read_data_block_size_evt_parms_t *)parms->parms;
 			dhdp->maxdatablks = ltoh16_ua((uint8 *)&parms2->data_block_num);
 			break;
 		}
 		}
 		break;
 	}

 	case HCI_Flush_Occurred: {
 		flush_occurred_evt_parms_t *evt_parms = (flush_occurred_evt_parms_t *)evt->parms;
 		dhd_bta_flush_hcidata(dhdp, ltoh16_ua((uint8 *)&evt_parms->handle));
 		break;
 	}
 	default:
 		break;
 	}
 }
	/*
	* BT-AMP support routines
	*
	* Copyright (C) 1999-2014, Broadcom Corporation
	*
	* Unless you and Broadcom execute a separate written software license
	* agreement governing use of this software, this software is licensed to you
	* under the terms of the GNU General Public License version 2 (the "GPL"),
	* available at http://www.broadcom.com/licenses/GPLv2.php, with the
	* following added to such license:
	*
	* As a special exception, the copyright holders of this software give you
	* permission to link this software with independent modules, and to copy and
	* distribute the resulting executable under terms of your choice, provided that
	* you also meet, for each linked independent module, the terms and conditions of
	* the license of that module. An independent module is a module which is not
	* derived from this software. The special exception does not apply to any
	* modifications of the software.
	*
	* Notwithstanding the above, under no circumstances may you combine this
	* software in any way with any other Broadcom software provided under a license
	* other than the GPL, without Broadcom's express prior written consent.
	*
	* $Id: dhd_bta.c 434434 2013-11-06 07:16:02Z $
	*/
	#error "WLBTAMP is not defined"

	#include <typedefs.h>
	#include <osl.h>
	#include <bcmcdc.h>
	#include <bcmutils.h>
	#include <bcmendian.h>
	#include <proto/802.11.h>
	#include <proto/802.11_bta.h>
	#include <proto/bt_amp_hci.h>
	#include <dngl_stats.h>
	#include <dhd.h>
	#include <dhd_bus.h>
	#include <dhd_proto.h>
	#include <dhdioctl.h>
	#include <dhd_dbg.h>

	#include <dhd_bta.h>


	#ifdef SEND_HCI_CMD_VIA_IOCTL
	#define BTA_HCI_CMD_MAX_LEN HCI_CMD_PREAMBLE_SIZE + HCI_CMD_DATA_SIZE

	/* Send HCI cmd via wl iovar HCI_cmd to the dongle. */
	int
	dhd_bta_docmd(dhd_pub_t pub, void cmd_buf, uint cmd_len)
	{
	amp_hci_cmd_t cmd = (amp_hci_cmd_t )cmd_buf;
	uint8 buf[BTA_HCI_CMD_MAX_LEN + 16];
	uint len = sizeof(buf);
	wl_ioctl_t ioc;

	if (cmd_len < HCI_CMD_PREAMBLE_SIZE)
	return BCME_BADLEN;

	if ((uint)cmd->plen + HCI_CMD_PREAMBLE_SIZE > cmd_len)
	return BCME_BADLEN;

	len = bcm_mkiovar("HCI_cmd",
	(char )cmd, (uint)cmd->plen + HCI_CMD_PREAMBLE_SIZE, (char )buf, len);


	memset(&ioc, 0, sizeof(ioc));

	ioc.cmd = WLC_SET_VAR;
	ioc.buf = buf;
	ioc.len = len;
	ioc.set = TRUE;

	return dhd_wl_ioctl(pub, &ioc, ioc.buf, ioc.len);
	}
	#else /* !SEND_HCI_CMD_VIA_IOCTL */

	static void
	dhd_bta_flush_hcidata(dhd_pub_t *pub, uint16 llh)
	{
	int prec;
	struct pktq *q;
	uint count = 0;

	q = dhd_bus_txq(pub->bus);
	if (q == NULL)
	return;

	DHD_BTA(("dhd: flushing HCI ACL data for logical link %u...\n", llh));

	dhd_os_sdlock_txq(pub);

	/* Walk through the txq and toss all HCI ACL data packets */
	PKTQ_PREC_ITER(q, prec) {
	void *head_pkt = NULL;

	while (pktq_ppeek(q, prec) != head_pkt) {
	void *pkt = pktq_pdeq(q, prec);
	int ifidx;

	dhd_prot_hdrpull(pub, &ifidx, pkt, NULL, NULL);

	if (PKTLEN(pub->osh, pkt) >= RFC1042_HDR_LEN) {
	struct ether_header *eh =
	(struct ether_header *)PKTDATA(pub->osh, pkt);

	if (ntoh16(eh->ether_type) < ETHER_TYPE_MIN) {
	struct dot11_llc_snap_header *lsh =
	(struct dot11_llc_snap_header *)&eh[1];

	if (bcmp(lsh, BT_SIG_SNAP_MPROT,
	DOT11_LLC_SNAP_HDR_LEN - 2) == 0 &&
	ntoh16(lsh->type) == BTA_PROT_L2CAP) {
	amp_hci_ACL_data_t *ACL_data =
	(amp_hci_ACL_data_t *)&lsh[1];
	uint16 handle = ltoh16(ACL_data->handle);

	if (HCI_ACL_DATA_HANDLE(handle) == llh) {
	PKTFREE(pub->osh, pkt, TRUE);
	count ++;
	continue;
	}
	}
	}
	}

	dhd_prot_hdrpush(pub, ifidx, pkt);

	if (head_pkt == NULL)
	head_pkt = pkt;
	pktq_penq(q, prec, pkt);
	}
	}

	dhd_os_sdunlock_txq(pub);

	DHD_BTA(("dhd: flushed %u packet(s) for logical link %u...\n", count, llh));
	}

	/* Handle HCI cmd locally.
	* Return 0: continue to send the cmd across SDIO
	* < 0: stop, fail
	* > 0: stop, succuess
	*/
	static int
	_dhd_bta_docmd(dhd_pub_t pub, amp_hci_cmd_t cmd)
	{
	int status = 0;

	switch (ltoh16_ua((uint8 *)&cmd->opcode)) {
	case HCI_Enhanced_Flush: {
	eflush_cmd_parms_t cmdparms = (eflush_cmd_parms_t )cmd->parms;
	dhd_bta_flush_hcidata(pub, ltoh16_ua(cmdparms->llh));
	break;
	}
	default:
	break;
	}

	return status;
	}

	/* Send HCI cmd encapsulated in BT-SIG frame via data channel to the dongle. */
	int
	dhd_bta_docmd(dhd_pub_t pub, void cmd_buf, uint cmd_len)
	{
	amp_hci_cmd_t cmd = (amp_hci_cmd_t )cmd_buf;
	struct ether_header *eh;
	struct dot11_llc_snap_header *lsh;
	osl_t *osh = pub->osh;
	uint len;
	void *p;
	int status;

	if (cmd_len < HCI_CMD_PREAMBLE_SIZE) {
	DHD_ERROR(("dhd_bta_docmd: short command, cmd_len %u\n", cmd_len));
	return BCME_BADLEN;
	}

	if ((len = (uint)cmd->plen + HCI_CMD_PREAMBLE_SIZE) > cmd_len) {
	DHD_ERROR(("dhd_bta_docmd: malformed command, len %u cmd_len %u\n",
	len, cmd_len));
	/* return BCME_BADLEN; */
	}

	p = PKTGET(osh, pub->hdrlen + RFC1042_HDR_LEN + len, TRUE);
	if (p == NULL) {
	DHD_ERROR(("dhd_bta_docmd: out of memory\n"));
	return BCME_NOMEM;
	}


	/* intercept and handle the HCI cmd locally */
	if ((status = _dhd_bta_docmd(pub, cmd)) > 0)
	return 0;
	else if (status < 0)
	return status;

	/* copy in HCI cmd */
	PKTPULL(osh, p, pub->hdrlen + RFC1042_HDR_LEN);
	bcopy(cmd, PKTDATA(osh, p), len);

	/* copy in partial Ethernet header with BT-SIG LLC/SNAP header */
	PKTPUSH(osh, p, RFC1042_HDR_LEN);
	eh = (struct ether_header *)PKTDATA(osh, p);
	bzero(eh->ether_dhost, ETHER_ADDR_LEN);
	ETHER_SET_LOCALADDR(eh->ether_dhost);
	bcopy(&pub->mac, eh->ether_shost, ETHER_ADDR_LEN);
	eh->ether_type = hton16(len + DOT11_LLC_SNAP_HDR_LEN);
	lsh = (struct dot11_llc_snap_header *)&eh[1];
	bcopy(BT_SIG_SNAP_MPROT, lsh, DOT11_LLC_SNAP_HDR_LEN - 2);
	lsh->type = 0;

	return dhd_sendpkt(pub, 0, p);
	}
	#endif /* !SEND_HCI_CMD_VIA_IOCTL */

	/* Send HCI ACL data to dongle via data channel */
	int
	dhd_bta_tx_hcidata(dhd_pub_t pub, void data_buf, uint data_len)
	{
	amp_hci_ACL_data_t data = (amp_hci_ACL_data_t )data_buf;
	struct ether_header *eh;
	struct dot11_llc_snap_header *lsh;
	osl_t *osh = pub->osh;
	uint len;
	void *p;

	if (data_len < HCI_ACL_DATA_PREAMBLE_SIZE) {
	DHD_ERROR(("dhd_bta_tx_hcidata: short data_buf, data_len %u\n", data_len));
	return BCME_BADLEN;
	}

	if ((len = (uint)ltoh16(data->dlen) + HCI_ACL_DATA_PREAMBLE_SIZE) > data_len) {
	DHD_ERROR(("dhd_bta_tx_hcidata: malformed hci data, len %u data_len %u\n",
	len, data_len));
	/* return BCME_BADLEN; */
	}

	p = PKTGET(osh, pub->hdrlen + RFC1042_HDR_LEN + len, TRUE);
	if (p == NULL) {
	DHD_ERROR(("dhd_bta_tx_hcidata: out of memory\n"));
	return BCME_NOMEM;
	}


	/* copy in HCI ACL data header and HCI ACL data */
	PKTPULL(osh, p, pub->hdrlen + RFC1042_HDR_LEN);
	bcopy(data, PKTDATA(osh, p), len);

	/* copy in partial Ethernet header with BT-SIG LLC/SNAP header */
	PKTPUSH(osh, p, RFC1042_HDR_LEN);
	eh = (struct ether_header *)PKTDATA(osh, p);
	bzero(eh->ether_dhost, ETHER_ADDR_LEN);
	bcopy(&pub->mac, eh->ether_shost, ETHER_ADDR_LEN);
	eh->ether_type = hton16(len + DOT11_LLC_SNAP_HDR_LEN);
	lsh = (struct dot11_llc_snap_header *)&eh[1];
	bcopy(BT_SIG_SNAP_MPROT, lsh, DOT11_LLC_SNAP_HDR_LEN - 2);
	lsh->type = HTON16(BTA_PROT_L2CAP);

	return dhd_sendpkt(pub, 0, p);
	}

	/* txcomplete callback */
	void
	dhd_bta_tx_hcidata_complete(dhd_pub_t dhdp, void txp, bool success)
	{
	uint8 pktdata = (uint8 )PKTDATA(dhdp->osh, txp);
	amp_hci_ACL_data_t ACL_data = (amp_hci_ACL_data_t )(pktdata + RFC1042_HDR_LEN);
	uint16 handle = ltoh16(ACL_data->handle);
	uint16 llh = HCI_ACL_DATA_HANDLE(handle);

	wl_event_msg_t event;
	uint8 data[HCI_EVT_PREAMBLE_SIZE + sizeof(num_completed_data_blocks_evt_parms_t)];
	amp_hci_event_t *evt;
	num_completed_data_blocks_evt_parms_t *parms;

	uint16 len = HCI_EVT_PREAMBLE_SIZE + sizeof(num_completed_data_blocks_evt_parms_t);

	/* update the event struct */
	memset(&event, 0, sizeof(event));
	event.version = hton16(BCM_EVENT_MSG_VERSION);
	event.event_type = hton32(WLC_E_BTA_HCI_EVENT);
	event.status = 0;
	event.reason = 0;
	event.auth_type = 0;
	event.datalen = hton32(len);
	event.flags = 0;

	/* generate Number of Completed Blocks event */
	evt = (amp_hci_event_t *)data;
	evt->ecode = HCI_Number_of_Completed_Data_Blocks;
	evt->plen = sizeof(num_completed_data_blocks_evt_parms_t);

	parms = (num_completed_data_blocks_evt_parms_t *)evt->parms;
	htol16_ua_store(dhdp->maxdatablks, (uint8 *)&parms->num_blocks);
	parms->num_handles = 1;
	htol16_ua_store(llh, (uint8 *)&parms->completed[0].handle);
	parms->completed[0].pkts = 1;
	parms->completed[0].blocks = 1;

	dhd_sendup_event_common(dhdp, &event, data);
	}

	/* event callback */
	void
	dhd_bta_doevt(dhd_pub_t dhdp, void data_buf, uint data_len)
	{
	amp_hci_event_t evt = (amp_hci_event_t )data_buf;

	ASSERT(dhdp);
	ASSERT(evt);

	switch (evt->ecode) {
	case HCI_Command_Complete: {
	cmd_complete_parms_t parms = (cmd_complete_parms_t )evt->parms;
	switch (ltoh16_ua((uint8 *)&parms->opcode)) {
	case HCI_Read_Data_Block_Size: {
	read_data_block_size_evt_parms_t *parms2 =
	(read_data_block_size_evt_parms_t *)parms->parms;
	dhdp->maxdatablks = ltoh16_ua((uint8 *)&parms2->data_block_num);
	break;
	}
	}
	break;
	}

	case HCI_Flush_Occurred: {
	flush_occurred_evt_parms_t evt_parms = (flush_occurred_evt_parms_t )evt->parms;
	dhd_bta_flush_hcidata(dhdp, ltoh16_ua((uint8 *)&evt_parms->handle));
	break;
	}
	default:
	break;
	}
	}