1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
|
//------------------------------------------------------------------------------
// <copyright file="htc_internal.h" company="Atheros">
// Copyright (c) 2007-2010 Atheros Corporation. All rights reserved.
//
//
// 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.
//
//
//------------------------------------------------------------------------------
//==============================================================================
// Author(s): ="Atheros"
//==============================================================================
#ifndef _HTC_INTERNAL_H_
#define _HTC_INTERNAL_H_
/* for debugging, uncomment this to capture the last frame header, on frame header
* processing errors, the last frame header is dump for comparison */
//#define HTC_CAPTURE_LAST_FRAME
//#define HTC_EP_STAT_PROFILING
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
/* Header files */
#include "a_config.h"
#include "athdefs.h"
#include "a_types.h"
#include "a_osapi.h"
#include "htc_debug.h"
#include "htc.h"
#include "htc_api.h"
#include "bmi_msg.h"
#include "hif.h"
#include "AR6000/ar6k.h"
/* HTC operational parameters */
#define HTC_TARGET_RESPONSE_TIMEOUT 2000 /* in ms */
#define HTC_TARGET_DEBUG_INTR_MASK 0x01
#define HTC_TARGET_CREDIT_INTR_MASK 0xF0
#define HTC_HOST_MAX_MSG_PER_BUNDLE 8
#define HTC_MIN_HTC_MSGS_TO_BUNDLE 2
/* packet flags */
#define HTC_RX_PKT_IGNORE_LOOKAHEAD (1 << 0)
#define HTC_RX_PKT_REFRESH_HDR (1 << 1)
#define HTC_RX_PKT_PART_OF_BUNDLE (1 << 2)
#define HTC_RX_PKT_NO_RECYCLE (1 << 3)
/* scatter request flags */
#define HTC_SCATTER_REQ_FLAGS_PARTIAL_BUNDLE (1 << 0)
typedef struct _HTC_ENDPOINT {
HTC_ENDPOINT_ID Id;
HTC_SERVICE_ID ServiceID; /* service ID this endpoint is bound to
non-zero value means this endpoint is in use */
HTC_PACKET_QUEUE TxQueue; /* HTC frame buffer TX queue */
HTC_PACKET_QUEUE RxBuffers; /* HTC frame buffer RX list */
HTC_ENDPOINT_CREDIT_DIST CreditDist; /* credit distribution structure (exposed to driver layer) */
HTC_EP_CALLBACKS EpCallBacks; /* callbacks associated with this endpoint */
int MaxTxQueueDepth; /* max depth of the TX queue before we need to
call driver's full handler */
int MaxMsgLength; /* max length of endpoint message */
int TxProcessCount; /* reference count to continue tx processing */
HTC_PACKET_QUEUE RecvIndicationQueue; /* recv packets ready to be indicated */
int RxProcessCount; /* reference count to allow single processing context */
struct _HTC_TARGET *target; /* back pointer to target */
A_UINT8 SeqNo; /* TX seq no (helpful) for debugging */
A_UINT32 LocalConnectionFlags; /* local connection flags */
#ifdef HTC_EP_STAT_PROFILING
HTC_ENDPOINT_STATS EndPointStats; /* endpoint statistics */
#endif
} HTC_ENDPOINT;
#ifdef HTC_EP_STAT_PROFILING
#define INC_HTC_EP_STAT(p,stat,count) (p)->EndPointStats.stat += (count);
#else
#define INC_HTC_EP_STAT(p,stat,count)
#endif
#define HTC_SERVICE_TX_PACKET_TAG HTC_TX_PACKET_TAG_INTERNAL
#define NUM_CONTROL_BUFFERS 8
#define NUM_CONTROL_TX_BUFFERS 2
#define NUM_CONTROL_RX_BUFFERS (NUM_CONTROL_BUFFERS - NUM_CONTROL_TX_BUFFERS)
typedef struct HTC_CONTROL_BUFFER {
HTC_PACKET HtcPacket;
A_UINT8 *Buffer;
} HTC_CONTROL_BUFFER;
#define HTC_RECV_WAIT_BUFFERS (1 << 0)
#define HTC_OP_STATE_STOPPING (1 << 0)
/* our HTC target state */
typedef struct _HTC_TARGET {
HTC_ENDPOINT EndPoint[ENDPOINT_MAX];
HTC_CONTROL_BUFFER HTCControlBuffers[NUM_CONTROL_BUFFERS];
HTC_ENDPOINT_CREDIT_DIST *EpCreditDistributionListHead;
HTC_PACKET_QUEUE ControlBufferTXFreeList;
HTC_PACKET_QUEUE ControlBufferRXFreeList;
HTC_CREDIT_DIST_CALLBACK DistributeCredits;
HTC_CREDIT_INIT_CALLBACK InitCredits;
void *pCredDistContext;
int TargetCredits;
unsigned int TargetCreditSize;
A_MUTEX_T HTCLock;
A_MUTEX_T HTCRxLock;
A_MUTEX_T HTCTxLock;
AR6K_DEVICE Device; /* AR6K - specific state */
A_UINT32 OpStateFlags;
A_UINT32 RecvStateFlags;
HTC_ENDPOINT_ID EpWaitingForBuffers;
A_BOOL TargetFailure;
#ifdef HTC_CAPTURE_LAST_FRAME
HTC_FRAME_HDR LastFrameHdr; /* useful for debugging */
A_UINT8 LastTrailer[256];
A_UINT8 LastTrailerLength;
#endif
HTC_INIT_INFO HTCInitInfo;
A_UINT8 HTCTargetVersion;
int MaxMsgPerBundle; /* max messages per bundle for HTC */
A_BOOL SendBundlingEnabled; /* run time enable for send bundling (dynamic) */
int RecvBundlingEnabled; /* run time enable for recv bundling (dynamic) */
} HTC_TARGET;
#define HTC_STOPPING(t) ((t)->OpStateFlags & HTC_OP_STATE_STOPPING)
#define LOCK_HTC(t) A_MUTEX_LOCK(&(t)->HTCLock);
#define UNLOCK_HTC(t) A_MUTEX_UNLOCK(&(t)->HTCLock);
#define LOCK_HTC_RX(t) A_MUTEX_LOCK(&(t)->HTCRxLock);
#define UNLOCK_HTC_RX(t) A_MUTEX_UNLOCK(&(t)->HTCRxLock);
#define LOCK_HTC_TX(t) A_MUTEX_LOCK(&(t)->HTCTxLock);
#define UNLOCK_HTC_TX(t) A_MUTEX_UNLOCK(&(t)->HTCTxLock);
#define GET_HTC_TARGET_FROM_HANDLE(hnd) ((HTC_TARGET *)(hnd))
#define HTC_RECYCLE_RX_PKT(target,p,e) \
{ \
if ((p)->PktInfo.AsRx.HTCRxFlags & HTC_RX_PKT_NO_RECYCLE) { \
HTC_PACKET_RESET_RX(pPacket); \
pPacket->Status = A_ECANCELED; \
(e)->EpCallBacks.EpRecv((e)->EpCallBacks.pContext, \
(p)); \
} else { \
HTC_PACKET_RESET_RX(pPacket); \
HTCAddReceivePkt((HTC_HANDLE)(target),(p)); \
} \
}
/* internal HTC functions */
void HTCControlTxComplete(void *Context, HTC_PACKET *pPacket);
void HTCControlRecv(void *Context, HTC_PACKET *pPacket);
A_STATUS HTCWaitforControlMessage(HTC_TARGET *target, HTC_PACKET **ppControlPacket);
HTC_PACKET *HTCAllocControlBuffer(HTC_TARGET *target, HTC_PACKET_QUEUE *pList);
void HTCFreeControlBuffer(HTC_TARGET *target, HTC_PACKET *pPacket, HTC_PACKET_QUEUE *pList);
A_STATUS HTCIssueSend(HTC_TARGET *target, HTC_PACKET *pPacket);
void HTCRecvCompleteHandler(void *Context, HTC_PACKET *pPacket);
A_STATUS HTCRecvMessagePendingHandler(void *Context, A_UINT32 MsgLookAheads[], int NumLookAheads, A_BOOL *pAsyncProc, int *pNumPktsFetched);
void HTCProcessCreditRpt(HTC_TARGET *target, HTC_CREDIT_REPORT *pRpt, int NumEntries, HTC_ENDPOINT_ID FromEndpoint);
A_STATUS HTCSendSetupComplete(HTC_TARGET *target);
void HTCFlushRecvBuffers(HTC_TARGET *target);
void HTCFlushSendPkts(HTC_TARGET *target);
#ifdef ATH_DEBUG_MODULE
void DumpCreditDist(HTC_ENDPOINT_CREDIT_DIST *pEPDist);
void DumpCreditDistStates(HTC_TARGET *target);
void DebugDumpBytes(A_UCHAR *buffer, A_UINT16 length, char *pDescription);
#endif
static INLINE HTC_PACKET *HTC_ALLOC_CONTROL_TX(HTC_TARGET *target) {
HTC_PACKET *pPacket = HTCAllocControlBuffer(target,&target->ControlBufferTXFreeList);
if (pPacket != NULL) {
/* set payload pointer area with some headroom */
pPacket->pBuffer = pPacket->pBufferStart + HTC_HDR_LENGTH;
}
return pPacket;
}
#define HTC_FREE_CONTROL_TX(t,p) HTCFreeControlBuffer((t),(p),&(t)->ControlBufferTXFreeList)
#define HTC_ALLOC_CONTROL_RX(t) HTCAllocControlBuffer((t),&(t)->ControlBufferRXFreeList)
#define HTC_FREE_CONTROL_RX(t,p) \
{ \
HTC_PACKET_RESET_RX(p); \
HTCFreeControlBuffer((t),(p),&(t)->ControlBufferRXFreeList); \
}
#define HTC_PREPARE_SEND_PKT(pP,sendflags,ctrl0,ctrl1) \
{ \
A_UINT8 *pHdrBuf; \
(pP)->pBuffer -= HTC_HDR_LENGTH; \
pHdrBuf = (pP)->pBuffer; \
A_SET_UINT16_FIELD(pHdrBuf,HTC_FRAME_HDR,PayloadLen,(A_UINT16)(pP)->ActualLength); \
A_SET_UINT8_FIELD(pHdrBuf,HTC_FRAME_HDR,Flags,(sendflags)); \
A_SET_UINT8_FIELD(pHdrBuf,HTC_FRAME_HDR,EndpointID, (A_UINT8)(pP)->Endpoint); \
A_SET_UINT8_FIELD(pHdrBuf,HTC_FRAME_HDR,ControlBytes[0], (A_UINT8)(ctrl0)); \
A_SET_UINT8_FIELD(pHdrBuf,HTC_FRAME_HDR,ControlBytes[1], (A_UINT8)(ctrl1)); \
}
#define HTC_UNPREPARE_SEND_PKT(pP) \
(pP)->pBuffer += HTC_HDR_LENGTH; \
#ifdef __cplusplus
}
#endif
#endif /* _HTC_INTERNAL_H_ */
|
