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Unified Diff: chromeos/drivers/ath6kl/include/htc_packet.h

Issue 646055: Atheros AR600x driver + build glue (Closed)
Patch Set: Created 10 years, 10 months ago
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Index: chromeos/drivers/ath6kl/include/htc_packet.h
diff --git a/chromeos/drivers/ath6kl/include/htc_packet.h b/chromeos/drivers/ath6kl/include/htc_packet.h
new file mode 100644
index 0000000000000000000000000000000000000000..26b20f2183f356ddf71738506fb10f853220dbfd
--- /dev/null
+++ b/chromeos/drivers/ath6kl/include/htc_packet.h
@@ -0,0 +1,223 @@
+//------------------------------------------------------------------------------
+// <copyright file="htc_packet.h" company="Atheros">
+// Copyright (c) 2007-2008 Atheros Corporation. All rights reserved.
+//
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License version 2 as
+// published by the Free Software Foundation;
+//
+// Software distributed under the License is distributed on an "AS
+// IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
+// implied. See the License for the specific language governing
+// rights and limitations under the License.
+//
+//
+//------------------------------------------------------------------------------
+//==============================================================================
+// Author(s): ="Atheros"
+//==============================================================================
+#ifndef HTC_PACKET_H_
+#define HTC_PACKET_H_
+
+
+#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) */
+} 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 */
+
+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 */
+ HTC_PACKET_COMPLETION Completion; /* completion */
+ void *pContext; /* HTC private completion context */
+} 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); \
+}
+
+/* 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; \
+}
+
+ /* 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_END ITERATE_END
+
+#endif /*HTC_PACKET_H_*/
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