branch Attitude Adjustment

git-svn-id: svn://svn.openwrt.org/openwrt/branches/attitude_adjustment@33625 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 508 insertions, 0 deletions

diff --git a/target/linux/s3c24xx/files-2.6.30/drivers/ar6000/htc/htc.c b/target/linux/s3c24xx/files-2.6.30/drivers/ar6000/htc/htc.c
new file mode 100644
index 000000000..d52ed944e
--- /dev/null
+++ b/target/linux/s3c24xx/files-2.6.30/drivers/ar6000/htc/htc.c
@@ -0,0 +1,508 @@
+/*
+ *
+ * Copyright (c) 2007 Atheros Communications Inc.
+ * 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.
+ *
+ *
+ *
+ */
+
+#include "htc_internal.h"
+
+
+static HTC_INIT_INFO  HTCInitInfo = {NULL,NULL,NULL};
+static A_BOOL         HTCInitialized = FALSE;
+
+static A_STATUS HTCTargetInsertedHandler(void *hif_handle);
+static A_STATUS HTCTargetRemovedHandler(void *handle, A_STATUS status);
+static void HTCReportFailure(void *Context);
+
+/* Initializes the HTC layer */
+A_STATUS HTCInit(HTC_INIT_INFO *pInitInfo)
+{
+    HTC_CALLBACKS htcCallbacks;
+
+    AR_DEBUG_PRINTF(ATH_DEBUG_TRC, ("HTCInit: Enter\n"));
+    if (HTCInitialized) {
+        AR_DEBUG_PRINTF(ATH_DEBUG_TRC, ("HTCInit: Exit\n"));
+        return A_OK;
+    }
+
+    A_MEMCPY(&HTCInitInfo,pInitInfo,sizeof(HTC_INIT_INFO));
+
+    A_MEMZERO(&htcCallbacks, sizeof(HTC_CALLBACKS));
+
+        /* setup HIF layer callbacks */
+    htcCallbacks.deviceInsertedHandler = HTCTargetInsertedHandler;
+    htcCallbacks.deviceRemovedHandler = HTCTargetRemovedHandler;
+        /* the device layer handles these */
+    htcCallbacks.rwCompletionHandler = DevRWCompletionHandler;
+    htcCallbacks.dsrHandler = DevDsrHandler;
+    HIFInit(&htcCallbacks);
+    HTCInitialized = TRUE;
+
+    AR_DEBUG_PRINTF(ATH_DEBUG_TRC, ("HTCInit: Exit\n"));
+    return A_OK;
+}
+
+void HTCFreeControlBuffer(HTC_TARGET *target, HTC_PACKET *pPacket, HTC_PACKET_QUEUE *pList)
+{
+    LOCK_HTC(target);
+    HTC_PACKET_ENQUEUE(pList,pPacket);
+    UNLOCK_HTC(target);
+}
+
+HTC_PACKET *HTCAllocControlBuffer(HTC_TARGET *target,  HTC_PACKET_QUEUE *pList)
+{
+    HTC_PACKET *pPacket;
+
+    LOCK_HTC(target);
+    pPacket = HTC_PACKET_DEQUEUE(pList);
+    UNLOCK_HTC(target);
+
+    return pPacket;
+}
+
+/* cleanup the HTC instance */
+static void HTCCleanup(HTC_TARGET *target)
+{
+    if (A_IS_MUTEX_VALID(&target->HTCLock)) {
+        A_MUTEX_DELETE(&target->HTCLock);
+    }
+
+    if (A_IS_MUTEX_VALID(&target->HTCRxLock)) {
+        A_MUTEX_DELETE(&target->HTCRxLock);
+    }
+
+    if (A_IS_MUTEX_VALID(&target->HTCTxLock)) {
+        A_MUTEX_DELETE(&target->HTCTxLock);
+    }
+        /* free our instance */
+    A_FREE(target);
+}
+
+/* registered target arrival callback from the HIF layer */
+static A_STATUS HTCTargetInsertedHandler(void *hif_handle)
+{
+    HTC_TARGET              *target = NULL;
+    A_STATUS                 status;
+    int                      i;
+
+    AR_DEBUG_PRINTF(ATH_DEBUG_TRC, ("htcTargetInserted - Enter\n"));
+
+    do {
+
+            /* allocate target memory */
+        if ((target = (HTC_TARGET *)A_MALLOC(sizeof(HTC_TARGET))) == NULL) {
+            AR_DEBUG_PRINTF(ATH_DEBUG_ERR, ("Unable to allocate memory\n"));
+            status = A_ERROR;
+            break;
+        }
+
+        A_MEMZERO(target, sizeof(HTC_TARGET));
+        A_MUTEX_INIT(&target->HTCLock);
+        A_MUTEX_INIT(&target->HTCRxLock);
+        A_MUTEX_INIT(&target->HTCTxLock);
+        INIT_HTC_PACKET_QUEUE(&target->ControlBufferTXFreeList);
+        INIT_HTC_PACKET_QUEUE(&target->ControlBufferRXFreeList);
+
+            /* give device layer the hif device handle */
+        target->Device.HIFDevice = hif_handle;
+            /* give the device layer our context (for event processing)
+             * the device layer will register it's own context with HIF
+             * so we need to set this so we can fetch it in the target remove handler */
+        target->Device.HTCContext = target;
+            /* set device layer target failure callback */
+        target->Device.TargetFailureCallback = HTCReportFailure;
+            /* set device layer recv message pending callback */
+        target->Device.MessagePendingCallback = HTCRecvMessagePendingHandler;
+        target->EpWaitingForBuffers = ENDPOINT_MAX;
+
+            /* setup device layer */
+        status = DevSetup(&target->Device);
+
+        if (A_FAILED(status)) {
+            break;
+        }
+
+            /* carve up buffers/packets for control messages */
+        for (i = 0; i < NUM_CONTROL_RX_BUFFERS; i++) {
+            HTC_PACKET *pControlPacket;
+            pControlPacket = &target->HTCControlBuffers[i].HtcPacket;
+            SET_HTC_PACKET_INFO_RX_REFILL(pControlPacket,
+                                          target,
+                                          target->HTCControlBuffers[i].Buffer,
+                                          HTC_CONTROL_BUFFER_SIZE,
+                                          ENDPOINT_0);
+            HTC_FREE_CONTROL_RX(target,pControlPacket);
+        }
+
+        for (;i < NUM_CONTROL_BUFFERS;i++) {
+             HTC_PACKET *pControlPacket;
+             pControlPacket = &target->HTCControlBuffers[i].HtcPacket;
+             INIT_HTC_PACKET_INFO(pControlPacket,
+                                  target->HTCControlBuffers[i].Buffer,
+                                  HTC_CONTROL_BUFFER_SIZE);
+             HTC_FREE_CONTROL_TX(target,pControlPacket);
+        }
+
+    } while (FALSE);
+
+    if (A_SUCCESS(status)) {
+        AR_DEBUG_PRINTF(ATH_DEBUG_TRC, (" calling AddInstance callback \n"));
+            /* announce ourselves */
+        HTCInitInfo.AddInstance((HTC_HANDLE)target);
+    } else {
+        if (target != NULL) {
+            HTCCleanup(target);
+        }
+    }
+
+    AR_DEBUG_PRINTF(ATH_DEBUG_TRC, ("htcTargetInserted - Exit\n"));
+
+    return status;
+}
+
+/* registered removal callback from the HIF layer */
+static A_STATUS HTCTargetRemovedHandler(void *handle, A_STATUS status)
+{
+    HTC_TARGET *target;
+
+    AR_DEBUG_PRINTF(ATH_DEBUG_TRC, ("+HTCTargetRemovedHandler handle:0x%X \n",(A_UINT32)handle));
+
+    if (NULL == handle) {
+            /* this could be NULL in the event that target initialization failed */
+        return A_OK;
+    }
+
+    target = ((AR6K_DEVICE *)handle)->HTCContext;
+
+    AR_DEBUG_PRINTF(ATH_DEBUG_TRC, ("   removing target:0x%X instance:0x%X ... \n",
+            (A_UINT32)target, (A_UINT32)target->pInstanceContext));
+
+    if (target->pInstanceContext != NULL) {
+            /* let upper layer know, it needs to call HTCStop() */
+        HTCInitInfo.DeleteInstance(target->pInstanceContext);
+    }
+
+    HIFShutDownDevice(target->Device.HIFDevice);
+
+    HTCCleanup(target);
+    AR_DEBUG_PRINTF(ATH_DEBUG_TRC, ("-HTCTargetRemovedHandler \n"));
+    return A_OK;
+}
+
+/* get the low level HIF device for the caller , the caller may wish to do low level
+ * HIF requests */
+void *HTCGetHifDevice(HTC_HANDLE HTCHandle)
+{
+    HTC_TARGET *target = GET_HTC_TARGET_FROM_HANDLE(HTCHandle);
+    return target->Device.HIFDevice;
+}
+
+/* set the instance block for this HTC handle, so that on removal, the blob can be
+ * returned to the caller */
+void HTCSetInstance(HTC_HANDLE HTCHandle, void *Instance)
+{
+    HTC_TARGET  *target = GET_HTC_TARGET_FROM_HANDLE(HTCHandle);
+
+    target->pInstanceContext = Instance;
+}
+
+/* wait for the target to arrive (sends HTC Ready message)
+ * this operation is fully synchronous and the message is polled for */
+A_STATUS HTCWaitTarget(HTC_HANDLE HTCHandle)
+{
+    HTC_TARGET              *target = GET_HTC_TARGET_FROM_HANDLE(HTCHandle);
+    A_STATUS                 status;
+    HTC_PACKET              *pPacket = NULL;
+    HTC_READY_MSG           *pRdyMsg;
+    HTC_SERVICE_CONNECT_REQ  connect;
+    HTC_SERVICE_CONNECT_RESP resp;
+
+    AR_DEBUG_PRINTF(ATH_DEBUG_TRC, ("HTCWaitTarget - Enter (target:0x%X) \n", (A_UINT32)target));
+
+    do {
+
+#ifdef MBOXHW_UNIT_TEST
+
+        status = DoMboxHWTest(&target->Device);
+
+        if (status != A_OK) {
+            break;
+        }
+
+#endif
+
+            /* we should be getting 1 control message that the target is ready */
+        status = HTCWaitforControlMessage(target, &pPacket);
+
+        if (A_FAILED(status)) {
+            AR_DEBUG_PRINTF(ATH_DEBUG_ERR, (" Target Not Available!!\n"));
+            break;
+        }
+
+            /* we controlled the buffer creation so it has to be properly aligned */
+        pRdyMsg = (HTC_READY_MSG *)pPacket->pBuffer;
+
+        if ((pRdyMsg->MessageID != HTC_MSG_READY_ID) ||
+            (pPacket->ActualLength < sizeof(HTC_READY_MSG))) {
+                /* this message is not valid */
+            AR_DEBUG_ASSERT(FALSE);
+            status = A_EPROTO;
+            break;
+        }
+
+        if (pRdyMsg->CreditCount == 0 || pRdyMsg->CreditSize == 0) {
+              /* this message is not valid */
+            AR_DEBUG_ASSERT(FALSE);
+            status = A_EPROTO;
+            break;
+        }
+
+        target->TargetCredits = pRdyMsg->CreditCount;
+        target->TargetCreditSize = pRdyMsg->CreditSize;
+
+        AR_DEBUG_PRINTF(ATH_DEBUG_TRC, (" Target Ready: credits: %d credit size: %d\n",
+                target->TargetCredits, target->TargetCreditSize));
+
+            /* setup our pseudo HTC control endpoint connection */
+        A_MEMZERO(&connect,sizeof(connect));
+        A_MEMZERO(&resp,sizeof(resp));
+        connect.EpCallbacks.pContext = target;
+        connect.EpCallbacks.EpTxComplete = HTCControlTxComplete;
+        connect.EpCallbacks.EpRecv = HTCControlRecv;
+        connect.EpCallbacks.EpRecvRefill = NULL;  /* not needed */
+        connect.EpCallbacks.EpSendFull = NULL;    /* not needed */
+        connect.EpCallbacks.EpSendAvail = NULL;   /* not needed */
+        connect.MaxSendQueueDepth = NUM_CONTROL_BUFFERS;
+        connect.ServiceID = HTC_CTRL_RSVD_SVC;
+
+            /* connect fake service */
+        status = HTCConnectService((HTC_HANDLE)target,
+                                   &connect,
+                                   &resp);
+
+        if (!A_FAILED(status)) {
+            break;
+        }
+
+    } while (FALSE);
+
+    if (pPacket != NULL) {
+        HTC_FREE_CONTROL_RX(target,pPacket);
+    }
+
+    AR_DEBUG_PRINTF(ATH_DEBUG_TRC, ("HTCWaitTarget - Exit\n"));
+
+    return status;
+}
+
+
+
+/* Start HTC, enable interrupts and let the target know host has finished setup */
+A_STATUS HTCStart(HTC_HANDLE HTCHandle)
+{
+    HTC_TARGET *target = GET_HTC_TARGET_FROM_HANDLE(HTCHandle);
+    HTC_PACKET *pPacket;
+    A_STATUS   status;
+
+    AR_DEBUG_PRINTF(ATH_DEBUG_TRC, ("HTCStart Enter\n"));
+
+        /* now that we are starting, push control receive buffers into the
+         * HTC control endpoint */
+
+    while (1) {
+        pPacket = HTC_ALLOC_CONTROL_RX(target);
+        if (NULL == pPacket) {
+            break;
+        }
+        HTCAddReceivePkt((HTC_HANDLE)target,pPacket);
+    }
+
+    do {
+
+        AR_DEBUG_ASSERT(target->InitCredits != NULL);
+        AR_DEBUG_ASSERT(target->EpCreditDistributionListHead != NULL);
+        AR_DEBUG_ASSERT(target->EpCreditDistributionListHead->pNext != NULL);
+
+            /* call init credits callback to do the distribution ,
+             * NOTE: the first entry in the distribution list is ENDPOINT_0, so
+             * we pass the start of the list after this one. */
+        target->InitCredits(target->pCredDistContext,
+                            target->EpCreditDistributionListHead->pNext,
+                            target->TargetCredits);
+
+        if (AR_DEBUG_LVL_CHECK(ATH_DEBUG_TRC)) {
+            DumpCreditDistStates(target);
+        }
+
+            /* the caller is done connecting to services, so we can indicate to the
+            * target that the setup phase is complete */
+        status = HTCSendSetupComplete(target);
+
+        if (A_FAILED(status)) {
+            break;
+        }
+
+            /* unmask interrupts */
+        status = DevUnmaskInterrupts(&target->Device);
+
+        if (A_FAILED(status)) {
+            HTCStop(target);
+        }
+
+    } while (FALSE);
+
+    AR_DEBUG_PRINTF(ATH_DEBUG_TRC, ("HTCStart Exit\n"));
+    return status;
+}
+
+
+/* stop HTC communications, i.e. stop interrupt reception, and flush all queued buffers */
+void HTCStop(HTC_HANDLE HTCHandle)
+{
+    HTC_TARGET *target = GET_HTC_TARGET_FROM_HANDLE(HTCHandle);
+    AR_DEBUG_PRINTF(ATH_DEBUG_TRC, ("+HTCStop \n"));
+
+        /* mark that we are shutting down .. */
+    target->HTCStateFlags |= HTC_STATE_STOPPING;
+
+        /* Masking interrupts is a synchronous operation, when this function returns
+         * all pending HIF I/O has completed, we can safely flush the queues */
+    DevMaskInterrupts(&target->Device);
+
+        /* flush all send packets */
+    HTCFlushSendPkts(target);
+        /* flush all recv buffers */
+    HTCFlushRecvBuffers(target);
+
+    AR_DEBUG_PRINTF(ATH_DEBUG_TRC, ("-HTCStop \n"));
+}
+
+/* undo what was done in HTCInit() */
+void HTCShutDown(void)
+{
+    AR_DEBUG_PRINTF(ATH_DEBUG_TRC, ("+HTCShutDown: \n"));
+    HTCInitialized = FALSE;
+        /* undo HTCInit */
+    HIFShutDownDevice(NULL);
+    AR_DEBUG_PRINTF(ATH_DEBUG_TRC, ("-HTCShutDown: \n"));
+}
+
+void HTCDumpCreditStates(HTC_HANDLE HTCHandle)
+{
+    HTC_TARGET *target = GET_HTC_TARGET_FROM_HANDLE(HTCHandle);
+
+    LOCK_HTC_TX(target);
+
+    DumpCreditDistStates(target);
+
+    UNLOCK_HTC_TX(target);
+}
+
+/* report a target failure from the device, this is a callback from the device layer
+ * which uses a mechanism to report errors from the target (i.e. special interrupts) */
+static void HTCReportFailure(void *Context)
+{
+    HTC_TARGET *target = (HTC_TARGET *)Context;
+
+    target->TargetFailure = TRUE;
+
+    if ((target->pInstanceContext != NULL) && (HTCInitInfo.TargetFailure != NULL)) {
+            /* let upper layer know, it needs to call HTCStop() */
+        HTCInitInfo.TargetFailure(target->pInstanceContext, A_ERROR);
+    }
+}
+
+void DebugDumpBytes(A_UCHAR *buffer, A_UINT16 length, char *pDescription)
+{
+    A_CHAR stream[60];
+    A_UINT32 i;
+    A_UINT16 offset, count;
+
+    AR_DEBUG_PRINTF(ATH_DEBUG_ANY, ("<---------Dumping %d Bytes : %s ------>\n", length, pDescription));
+
+    count = 0;
+    offset = 0;
+    for(i = 0; i < length; i++) {
+        sprintf(stream + offset, "%2.2X ", buffer[i]);
+        count ++;
+        offset += 3;
+
+        if(count == 16) {
+            count = 0;
+            offset = 0;
+            AR_DEBUG_PRINTF(ATH_DEBUG_ANY, ("[H]: %s\n", stream));
+            A_MEMZERO(stream, 60);
+        }
+    }
+
+    if(offset != 0) {
+        AR_DEBUG_PRINTF(ATH_DEBUG_ANY, ("[H]: %s\n", stream));
+    }
+
+    AR_DEBUG_PRINTF(ATH_DEBUG_ANY, ("<------------------------------------------------->\n"));
+}
+
+A_BOOL HTCGetEndpointStatistics(HTC_HANDLE               HTCHandle,
+                                HTC_ENDPOINT_ID          Endpoint,
+                                HTC_ENDPOINT_STAT_ACTION Action,
+                                HTC_ENDPOINT_STATS       *pStats)
+{
+
+#ifdef HTC_EP_STAT_PROFILING
+    HTC_TARGET *target = GET_HTC_TARGET_FROM_HANDLE(HTCHandle);
+    A_BOOL     clearStats = FALSE;
+    A_BOOL     sample = FALSE;
+
+    switch (Action) {
+        case HTC_EP_STAT_SAMPLE :
+            sample = TRUE;
+            break;
+        case HTC_EP_STAT_SAMPLE_AND_CLEAR :
+            sample = TRUE;
+            clearStats = TRUE;
+            break;
+        case HTC_EP_STAT_CLEAR :
+            clearStats = TRUE;
+            break;
+        default:
+            break;
+    }
+
+    A_ASSERT(Endpoint < ENDPOINT_MAX);
+
+        /* lock out TX and RX while we sample and/or clear */
+    LOCK_HTC_TX(target);
+    LOCK_HTC_RX(target);
+
+    if (sample) {
+        A_ASSERT(pStats != NULL);
+            /* return the stats to the caller */
+        A_MEMCPY(pStats, &target->EndPoint[Endpoint].EndPointStats, sizeof(HTC_ENDPOINT_STATS));
+    }
+
+    if (clearStats) {
+            /* reset stats */
+        A_MEMZERO(&target->EndPoint[Endpoint].EndPointStats, sizeof(HTC_ENDPOINT_STATS));
+    }
+
+    UNLOCK_HTC_RX(target);
+    UNLOCK_HTC_TX(target);
+
+    return TRUE;
+#else
+    return FALSE;
+#endif
+}