static void HTT_RX_FRAG_SET_LAST_MSDU(
struct htt_pdev_t *pdev, adf_nbuf_t msg)
{
u_int32_t *msg_word;
unsigned num_msdu_bytes;
adf_nbuf_t msdu;
struct htt_host_rx_desc_base *rx_desc;
int start_idx;
u_int8_t *p_fw_msdu_rx_desc = 0;
msg_word = (u_int32_t *) adf_nbuf_data(msg);
num_msdu_bytes = HTT_RX_FRAG_IND_FW_RX_DESC_BYTES_GET(*(msg_word +
HTT_RX_FRAG_IND_HDR_PREFIX_SIZE32));
/*
* 1 word for the message header,
* 1 word to specify the number of MSDU bytes,
* 1 word for every 4 MSDU bytes (round up),
* 1 word for the MPDU range header
*/
pdev->rx_mpdu_range_offset_words = 3 + ((num_msdu_bytes + 3) >> 2);
pdev->rx_ind_msdu_byte_idx = 0;
p_fw_msdu_rx_desc = ((u_int8_t *)(msg_word) +
HTT_ENDIAN_BYTE_IDX_SWAP(HTT_RX_FRAG_IND_FW_DESC_BYTE_OFFSET));
/*
* Fix for EV126710, in which BSOD occurs due to last_msdu bit
* not set while the next pointer is deliberately set to NULL
* before calling ol_rx_pn_check_base()
*
* For fragment frames, the HW may not have set the last_msdu bit
* in the rx descriptor, but the SW expects this flag to be set,
* since each fragment is in a separate MPDU. Thus, set the flag here,
* just in case the HW didn't.
*/
start_idx = pdev->rx_ring.sw_rd_idx.msdu_payld;
msdu = pdev->rx_ring.buf.netbufs_ring[start_idx];
adf_nbuf_set_pktlen(msdu, HTT_RX_BUF_SIZE);
adf_nbuf_unmap(pdev->osdev, msdu, ADF_OS_DMA_FROM_DEVICE);
rx_desc = htt_rx_desc(msdu);
*((u_int8_t *) &rx_desc->fw_desc.u.val) = *p_fw_msdu_rx_desc;
rx_desc->msdu_end.last_msdu = 1;
adf_nbuf_map(pdev->osdev, msdu, ADF_OS_DMA_FROM_DEVICE);
}
wmi_buf_t
wmi_buf_alloc(wmi_unified_t wmi_handle, u_int16_t len)
{
wmi_buf_t wmi_buf;
if (roundup(len + WMI_MIN_HEAD_ROOM, 4) >
wmi_handle->max_msg_len) {
VOS_ASSERT(0);
return NULL;
}
wmi_buf = adf_nbuf_alloc(NULL, roundup(len + WMI_MIN_HEAD_ROOM, 4),
WMI_MIN_HEAD_ROOM, 4, FALSE);
if (!wmi_buf)
return NULL;
/* Clear the wmi buffer */
OS_MEMZERO(adf_nbuf_data(wmi_buf), len);
/*
* Set the length of the buffer to match the allocation size.
*/
adf_nbuf_set_pktlen(wmi_buf, len);
return wmi_buf;
}
A_STATUS HTCRxCompletionHandler(
void *Context, adf_nbuf_t netbuf, a_uint8_t pipeID)
{
A_STATUS status = A_OK;
HTC_FRAME_HDR *HtcHdr;
HTC_TARGET *target = (HTC_TARGET *)Context;
a_uint8_t *netdata;
a_uint32_t netlen;
HTC_ENDPOINT *pEndpoint;
HTC_PACKET *pPacket;
A_UINT16 payloadLen;
a_uint32_t trailerlen = 0;
A_UINT8 htc_ep_id;
#ifdef RX_SG_SUPPORT
LOCK_HTC_RX(target);
if (target->IsRxSgInprogress) {
target->CurRxSgTotalLen += adf_nbuf_len(netbuf);
adf_nbuf_queue_add(&target->RxSgQueue, netbuf);
if (target->CurRxSgTotalLen == target->ExpRxSgTotalLen) {
netbuf = RxSgToSingleNetbuf(target);
if (netbuf == NULL) {
UNLOCK_HTC_RX(target);
goto _out;
}
}
else {
netbuf = NULL;
UNLOCK_HTC_RX(target);
goto _out;
}
}
UNLOCK_HTC_RX(target);
#endif
netdata = adf_nbuf_data(netbuf);
netlen = adf_nbuf_len(netbuf);
HtcHdr = (HTC_FRAME_HDR *)netdata;
do {
htc_ep_id = HTC_GET_FIELD(HtcHdr, HTC_FRAME_HDR, ENDPOINTID);
if (htc_ep_id >= ENDPOINT_MAX) {
AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("HTC Rx: invalid EndpointID=%d\n",htc_ep_id));
DebugDumpBytes((A_UINT8 *)HtcHdr,sizeof(HTC_FRAME_HDR),"BAD HTC Header");
status = A_ERROR;
VOS_BUG(0);
break;
}
pEndpoint = &target->EndPoint[htc_ep_id];
/*
* If this endpoint that received a message from the target has
* a to-target HIF pipe whose send completions are polled rather
* than interrupt-driven, this is a good point to ask HIF to check
* whether it has any completed sends to handle.
*/
if (pEndpoint->ul_is_polled) {
HTCSendCompleteCheck(pEndpoint, 1);
}
payloadLen = HTC_GET_FIELD(HtcHdr, HTC_FRAME_HDR, PAYLOADLEN);
if (netlen < (payloadLen + HTC_HDR_LENGTH)) {
#ifdef RX_SG_SUPPORT
LOCK_HTC_RX(target);
target->IsRxSgInprogress = TRUE;
adf_nbuf_queue_init(&target->RxSgQueue);
adf_nbuf_queue_add(&target->RxSgQueue, netbuf);
target->ExpRxSgTotalLen = (payloadLen + HTC_HDR_LENGTH);
target->CurRxSgTotalLen += netlen;
UNLOCK_HTC_RX(target);
netbuf = NULL;
break;
#else
AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("HTC Rx: insufficient length, got:%d expected =%zu\n",
netlen, payloadLen + HTC_HDR_LENGTH));
DebugDumpBytes((A_UINT8 *)HtcHdr,sizeof(HTC_FRAME_HDR),"BAD RX packet length");
status = A_ERROR;
VOS_BUG(0);
break;
#endif
}
#ifdef HTC_EP_STAT_PROFILING
LOCK_HTC_RX(target);
INC_HTC_EP_STAT(pEndpoint,RxReceived,1);
UNLOCK_HTC_RX(target);
#endif
//if (IS_TX_CREDIT_FLOW_ENABLED(pEndpoint)) {
{
A_UINT8 temp;
/* get flags to check for trailer */
temp = HTC_GET_FIELD(HtcHdr, HTC_FRAME_HDR, FLAGS);
if (temp & HTC_FLAGS_RECV_TRAILER) {
/* extract the trailer length */
temp = HTC_GET_FIELD(HtcHdr, HTC_FRAME_HDR, CONTROLBYTES0);
if ((temp < sizeof(HTC_RECORD_HDR)) || (temp > payloadLen)) {
AR_DEBUG_PRINTF(ATH_DEBUG_ERR,
("HTCRxCompletionHandler, invalid header (payloadlength should be :%d, CB[0] is:%d) \n",
payloadLen, temp));
status = A_EPROTO;
break;
}
trailerlen = temp;
/* process trailer data that follows HDR + application payload */
status = HTCProcessTrailer(target,
((A_UINT8 *)HtcHdr + HTC_HDR_LENGTH + payloadLen - temp),
temp, htc_ep_id);
if (A_FAILED(status)) {
break;
}
}
}
if (((int)payloadLen - (int)trailerlen) <= 0) {
/* zero length packet with trailer data, just drop these */
break;
}
if (htc_ep_id == ENDPOINT_0) {
A_UINT16 message_id;
HTC_UNKNOWN_MSG *htc_msg;
int wow_nack = 0;
/* remove HTC header */
adf_nbuf_pull_head(netbuf, HTC_HDR_LENGTH);
netdata = adf_nbuf_data(netbuf);
netlen = adf_nbuf_len(netbuf);
htc_msg = (HTC_UNKNOWN_MSG*)netdata;
message_id = HTC_GET_FIELD(htc_msg, HTC_UNKNOWN_MSG, MESSAGEID);
switch (message_id) {
default:
/* handle HTC control message */
if (target->CtrlResponseProcessing) {
/* this is a fatal error, target should not be sending unsolicited messages
* on the endpoint 0 */
AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("HTC Rx Ctrl still processing\n"));
status = A_ERROR;
VOS_BUG(FALSE);
break;
}
LOCK_HTC_RX(target);
target->CtrlResponseLength = min((int)netlen,HTC_MAX_CONTROL_MESSAGE_LENGTH);
A_MEMCPY(target->CtrlResponseBuffer,netdata,target->CtrlResponseLength);
/* Requester will clear this flag */
target->CtrlResponseProcessing = TRUE;
UNLOCK_HTC_RX(target);
adf_os_complete(&target->CtrlResponseValid);
break;
case HTC_MSG_SEND_SUSPEND_COMPLETE:
wow_nack = 0;
LOCK_HTC_CREDIT(target);
htc_credit_record(HTC_SUSPEND_ACK, pEndpoint->TxCredits,
HTC_PACKET_QUEUE_DEPTH(&pEndpoint->TxQueue));
UNLOCK_HTC_CREDIT(target);
target->HTCInitInfo.TargetSendSuspendComplete((void *)&wow_nack);
HTCsuspendwow(target);
break;
case HTC_MSG_NACK_SUSPEND:
wow_nack = 1;
LOCK_HTC_CREDIT(target);
htc_credit_record(HTC_SUSPEND_NACK, pEndpoint->TxCredits,
HTC_PACKET_QUEUE_DEPTH(&pEndpoint->TxQueue));
UNLOCK_HTC_CREDIT(target);
target->HTCInitInfo.TargetSendSuspendComplete((void *)&wow_nack);
break;
}
adf_nbuf_free(netbuf);
netbuf = NULL;
break;
}
/* the current message based HIF architecture allocates net bufs for recv packets
* since this layer bridges that HIF to upper layers , which expects HTC packets,
* we form the packets here
* TODO_FIXME */
pPacket = AllocateHTCPacketContainer(target);
if (NULL == pPacket) {
status = A_NO_RESOURCE;
break;
}
pPacket->Status = A_OK;
pPacket->Endpoint = htc_ep_id;
pPacket->pPktContext = netbuf;
pPacket->pBuffer = adf_nbuf_data(netbuf) + HTC_HDR_LENGTH;
pPacket->ActualLength = netlen - HTC_HEADER_LEN - trailerlen;
adf_nbuf_pull_head(netbuf, HTC_HEADER_LEN);
adf_nbuf_set_pktlen(netbuf, pPacket->ActualLength);
RecvPacketCompletion(target,pEndpoint,pPacket);
/* recover the packet container */
FreeHTCPacketContainer(target,pPacket);
netbuf = NULL;
} while(FALSE);
#ifdef RX_SG_SUPPORT
_out:
#endif
if (netbuf != NULL) {
adf_nbuf_free(netbuf);
}
return status;
}
