| /* |
| * Copyright (c) 2013-2018 The Linux Foundation. All rights reserved. |
| * |
| * Previously licensed under the ISC license by Qualcomm Atheros, Inc. |
| * |
| * |
| * Permission to use, copy, modify, and/or distribute this software for |
| * any purpose with or without fee is hereby granted, provided that the |
| * above copyright notice and this permission notice appear in all |
| * copies. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL |
| * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED |
| * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE |
| * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL |
| * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR |
| * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER |
| * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR |
| * PERFORMANCE OF THIS SOFTWARE. |
| */ |
| |
| /* |
| * This file was originally distributed by Qualcomm Atheros, Inc. |
| * under proprietary terms before Copyright ownership was assigned |
| * to the Linux Foundation. |
| */ |
| |
| #ifndef HTC_PACKET_H_ |
| #define HTC_PACKET_H_ |
| |
| #include <osdep.h> |
| #include <a_types.h> /* A_UINT16, etc. */ |
| #include "dl_list.h" |
| |
| /* ------ Endpoint IDS ------ */ |
| typedef enum |
| { |
| ENDPOINT_UNUSED = -1, |
| ENDPOINT_0 = 0, |
| ENDPOINT_1 = 1, |
| ENDPOINT_2 = 2, |
| ENDPOINT_3, |
| ENDPOINT_4, |
| ENDPOINT_5, |
| ENDPOINT_6, |
| ENDPOINT_7, |
| ENDPOINT_8, |
| ENDPOINT_MAX, |
| } HTC_ENDPOINT_ID; |
| |
| struct _HTC_PACKET; |
| |
| typedef void (* HTC_PACKET_COMPLETION)(void *,struct _HTC_PACKET *); |
| |
| typedef A_UINT16 HTC_TX_TAG; |
| |
| typedef struct _HTC_TX_PACKET_INFO { |
| HTC_TX_TAG Tag; /* tag used to selective flush packets */ |
| int CreditsUsed; /* number of credits used for this TX packet (HTC internal) */ |
| A_UINT8 SendFlags; /* send flags (HTC internal) */ |
| int SeqNo; /* internal seq no for debugging (HTC internal) */ |
| A_UINT32 Flags; /* internal use */ |
| } HTC_TX_PACKET_INFO; |
| |
| #define HTC_TX_PACKET_TAG_ALL 0 /* a tag of zero is reserved and used to flush ALL packets */ |
| #define HTC_TX_PACKET_TAG_INTERNAL 1 /* internal tags start here */ |
| #define HTC_TX_PACKET_TAG_USER_DEFINED (HTC_TX_PACKET_TAG_INTERNAL + 9) /* user-defined tags start here */ |
| #define HTC_TX_PACKET_TAG_BUNDLED HTC_TX_PACKET_TAG_USER_DEFINED + 1 /* indicate this is bundled TX packet */ |
| #define HTC_TX_PACKET_TAG_AUTO_PM HTC_TX_PACKET_TAG_USER_DEFINED + 2 /* indicate this is AUTO PM tagged */ |
| #define HTC_TX_PACKET_TAG_RUNTIME_PUT HTC_TX_PACKET_TAG_USER_DEFINED + 3 /* To indicate HTC to do PUT for these packets as these packets doesn't get the tx complete */ |
| |
| #define HTC_TX_PACKET_FLAG_FIXUP_NETBUF (1 << 0) |
| |
| typedef struct _HTC_RX_PACKET_INFO { |
| A_UINT32 ExpectedHdr; /* HTC internal use */ |
| A_UINT32 HTCRxFlags; /* HTC internal use */ |
| A_UINT32 IndicationFlags; /* indication flags set on each RX packet indication */ |
| } HTC_RX_PACKET_INFO; |
| |
| #define HTC_RX_FLAGS_INDICATE_MORE_PKTS (1 << 0) /* more packets on this endpoint are being fetched */ |
| |
| /* wrapper around endpoint-specific packets */ |
| typedef struct _HTC_PACKET { |
| DL_LIST ListLink; /* double link */ |
| void *pPktContext; /* caller's per packet specific context */ |
| |
| A_UINT8 *pBufferStart; /* the true buffer start , the caller can |
| store the real buffer start here. In |
| receive callbacks, the HTC layer sets pBuffer |
| to the start of the payload past the header. This |
| field allows the caller to reset pBuffer when it |
| recycles receive packets back to HTC */ |
| /* |
| * Pointer to the start of the buffer. In the transmit |
| * direction this points to the start of the payload. In the |
| * receive direction, however, the buffer when queued up |
| * points to the start of the HTC header but when returned |
| * to the caller points to the start of the payload |
| */ |
| A_UINT8 *pBuffer; /* payload start (RX/TX) */ |
| A_UINT32 BufferLength; /* length of buffer */ |
| A_UINT32 ActualLength; /* actual length of payload */ |
| HTC_ENDPOINT_ID Endpoint; /* endpoint that this packet was sent/recv'd from */ |
| A_STATUS Status; /* completion status */ |
| union { |
| HTC_TX_PACKET_INFO AsTx; /* Tx Packet specific info */ |
| HTC_RX_PACKET_INFO AsRx; /* Rx Packet specific info */ |
| } PktInfo; |
| |
| /* the following fields are for internal HTC use */ |
| A_UINT32 netbufOrigHeadRoom; |
| HTC_PACKET_COMPLETION Completion; /* completion */ |
| void *pContext; /* HTC private completion context */ |
| void *pNetBufContext; /* optimization for network-oriented data, the HTC packet |
| can pass the network buffer corresponding to the HTC packet |
| lower layers may optimized the transfer knowing this is |
| a network buffer */ |
| A_UINT8 BundlePktnum; |
| } HTC_PACKET; |
| |
| |
| |
| #define COMPLETE_HTC_PACKET(p,status) \ |
| { \ |
| (p)->Status = (status); \ |
| (p)->Completion((p)->pContext,(p)); \ |
| } |
| |
| #define INIT_HTC_PACKET_INFO(p,b,len) \ |
| { \ |
| (p)->pBufferStart = (b); \ |
| (p)->BufferLength = (len); \ |
| } |
| |
| /* macro to set an initial RX packet for refilling HTC */ |
| #define SET_HTC_PACKET_INFO_RX_REFILL(p,c,b,len,ep) \ |
| { \ |
| (p)->pPktContext = (c); \ |
| (p)->pBuffer = (b); \ |
| (p)->pBufferStart = (b); \ |
| (p)->BufferLength = (len); \ |
| (p)->Endpoint = (ep); \ |
| } |
| |
| /* fast macro to recycle an RX packet that will be re-queued to HTC */ |
| #define HTC_PACKET_RESET_RX(p) \ |
| { (p)->pBuffer = (p)->pBufferStart; (p)->ActualLength = 0; } |
| |
| /* macro to set packet parameters for TX */ |
| #define SET_HTC_PACKET_INFO_TX(p,c,b,len,ep,tag) \ |
| { \ |
| (p)->pPktContext = (c); \ |
| (p)->pBuffer = (b); \ |
| (p)->ActualLength = (len); \ |
| (p)->Endpoint = (ep); \ |
| (p)->PktInfo.AsTx.Tag = (tag); \ |
| (p)->PktInfo.AsTx.Flags = 0; \ |
| (p)->PktInfo.AsTx.SendFlags = 0; \ |
| } |
| |
| #define SET_HTC_PACKET_NET_BUF_CONTEXT(p,nb) \ |
| (p)->pNetBufContext = (nb) |
| |
| #define GET_HTC_PACKET_NET_BUF_CONTEXT(p) (p)->pNetBufContext |
| |
| /* HTC Packet Queueing Macros */ |
| typedef struct _HTC_PACKET_QUEUE { |
| DL_LIST QueueHead; |
| int Depth; |
| } HTC_PACKET_QUEUE; |
| |
| /* initialize queue */ |
| #define INIT_HTC_PACKET_QUEUE(pQ) \ |
| { \ |
| DL_LIST_INIT(&(pQ)->QueueHead); \ |
| (pQ)->Depth = 0; \ |
| } |
| |
| /* enqueue HTC packet to the tail of the queue */ |
| #define HTC_PACKET_ENQUEUE(pQ,p) \ |
| { DL_ListInsertTail(&(pQ)->QueueHead,&(p)->ListLink); \ |
| (pQ)->Depth++; \ |
| } |
| |
| /* enqueue HTC packet to the tail of the queue */ |
| #define HTC_PACKET_ENQUEUE_TO_HEAD(pQ,p) \ |
| { DL_ListInsertHead(&(pQ)->QueueHead,&(p)->ListLink); \ |
| (pQ)->Depth++; \ |
| } |
| /* test if a queue is empty */ |
| #define HTC_QUEUE_EMPTY(pQ) ((pQ)->Depth == 0) |
| /* get packet at head without removing it */ |
| static INLINE HTC_PACKET *HTC_GET_PKT_AT_HEAD(HTC_PACKET_QUEUE *queue) { |
| if (queue->Depth == 0) { |
| return NULL; |
| } |
| return A_CONTAINING_STRUCT((DL_LIST_GET_ITEM_AT_HEAD(&queue->QueueHead)),HTC_PACKET,ListLink); |
| } |
| /* remove a packet from a queue, where-ever it is in the queue */ |
| #define HTC_PACKET_REMOVE(pQ,p) \ |
| { \ |
| DL_ListRemove(&(p)->ListLink); \ |
| (pQ)->Depth--; \ |
| } |
| |
| /* dequeue an HTC packet from the head of the queue */ |
| static INLINE HTC_PACKET *HTC_PACKET_DEQUEUE(HTC_PACKET_QUEUE *queue) { |
| DL_LIST *pItem = DL_ListRemoveItemFromHead(&queue->QueueHead); |
| if (pItem != NULL) { |
| queue->Depth--; |
| return A_CONTAINING_STRUCT(pItem, HTC_PACKET, ListLink); |
| } |
| return NULL; |
| } |
| |
| /* dequeue an HTC packet from the tail of the queue */ |
| static INLINE HTC_PACKET *HTC_PACKET_DEQUEUE_TAIL(HTC_PACKET_QUEUE *queue) { |
| DL_LIST *pItem = DL_ListRemoveItemFromTail(&queue->QueueHead); |
| if (pItem != NULL) { |
| queue->Depth--; |
| return A_CONTAINING_STRUCT(pItem, HTC_PACKET, ListLink); |
| } |
| return NULL; |
| } |
| |
| #define HTC_PACKET_QUEUE_DEPTH(pQ) (pQ)->Depth |
| |
| |
| #define HTC_GET_ENDPOINT_FROM_PKT(p) (p)->Endpoint |
| #define HTC_GET_TAG_FROM_PKT(p) (p)->PktInfo.AsTx.Tag |
| |
| /* transfer the packets from one queue to the tail of another queue */ |
| #define HTC_PACKET_QUEUE_TRANSFER_TO_TAIL(pQDest,pQSrc) \ |
| { \ |
| DL_ListTransferItemsToTail(&(pQDest)->QueueHead,&(pQSrc)->QueueHead); \ |
| (pQDest)->Depth += (pQSrc)->Depth; \ |
| (pQSrc)->Depth = 0; \ |
| } |
| |
| /* |
| * Transfer the packets from one queue to the head of another queue. |
| * This xfer_to_head(q1,q2) is basically equivalent to xfer_to_tail(q2,q1), |
| * but it updates the queue descriptor object for the initial queue to refer |
| * to the concatenated queue. |
| */ |
| #define HTC_PACKET_QUEUE_TRANSFER_TO_HEAD(pQDest, pQSrc) \ |
| { \ |
| DL_ListTransferItemsToHead(&(pQDest)->QueueHead,&(pQSrc)->QueueHead); \ |
| (pQDest)->Depth += (pQSrc)->Depth; \ |
| (pQSrc)->Depth = 0; \ |
| } |
| |
| /* fast version to init and add a single packet to a queue */ |
| #define INIT_HTC_PACKET_QUEUE_AND_ADD(pQ,pP) \ |
| { \ |
| DL_LIST_INIT_AND_ADD(&(pQ)->QueueHead,&(pP)->ListLink) \ |
| (pQ)->Depth = 1; \ |
| } |
| |
| #define HTC_PACKET_QUEUE_ITERATE_ALLOW_REMOVE(pQ, pPTemp) \ |
| ITERATE_OVER_LIST_ALLOW_REMOVE(&(pQ)->QueueHead,(pPTemp), HTC_PACKET, ListLink) |
| |
| #define HTC_PACKET_QUEUE_ITERATE_IS_VALID(pQ) ITERATE_IS_VALID(&(pQ)->QueueHead) |
| #define HTC_PACKET_QUEUE_ITERATE_RESET(pQ) ITERATE_RESET(&(pQ)->QueueHead) |
| |
| #define HTC_PACKET_QUEUE_ITERATE_END ITERATE_END |
| |
| #endif /*HTC_PACKET_H_*/ |