/* disable all device interrupts */
A_STATUS DevMaskInterrupts(AR6K_DEVICE *pDev)
{
/* mask the interrupt at the HIF layer, we don't want a stray interrupt taken while
* we zero out our shadow registers in DevDisableInterrupts()*/
HIFMaskInterrupt(pDev->HIFDevice);
return DevDisableInterrupts(pDev);
}
/* disable all device interrupts */
int DevMaskInterrupts(struct ar6k_device *pDev)
{
/* mask the interrupt at the HIF layer, we don't want a stray interrupt taken while
* we zero out our shadow registers in DevDisableInterrupts()*/
HIFMaskInterrupt(pDev->HIFDevice);
return DevDisableInterrupts(pDev);
}
/* enable device interrupts */
A_STATUS DevUnmaskInterrupts(AR6K_DEVICE *pDev)
{
/* for good measure, make sure interrupt are disabled before unmasking at the HIF
* layer.
* The rationale here is that between device insertion (where we clear the interrupts the first time)
* and when HTC is finally ready to handle interrupts, other software can perform target "soft" resets.
* The AR6K interrupt enables reset back to an "enabled" state when this happens.
* */
DevDisableInterrupts(pDev);
/* Unmask the host controller interrupts */
HIFUnMaskInterrupt(pDev->HIFDevice);
return DevEnableInterrupts(pDev);
}
/* enable device interrupts */
int DevUnmaskInterrupts(struct ar6k_device *pDev)
{
/* for good measure, make sure interrupt are disabled before unmasking at the HIF
* layer.
* The rationale here is that between device insertion (where we clear the interrupts the first time)
* and when HTC is finally ready to handle interrupts, other software can perform target "soft" resets.
* The AR6K interrupt enables reset back to an "enabled" state when this happens.
* */
int IntStatus = 0;
DevDisableInterrupts(pDev);
#ifdef THREAD_X
// Tobe verified...
IntStatus = DevEnableInterrupts(pDev);
/* Unmask the host controller interrupts */
HIFUnMaskInterrupt(pDev->HIFDevice);
#else
/* Unmask the host controller interrupts */
HIFUnMaskInterrupt(pDev->HIFDevice);
IntStatus = DevEnableInterrupts(pDev);
#endif
return IntStatus;
}
A_STATUS DevSetup(AR6K_DEVICE *pDev)
{
A_UINT32 blocksizes[AR6K_MAILBOXES];
A_STATUS status = A_OK;
int i;
HTC_CALLBACKS htcCallbacks;
do {
DL_LIST_INIT(&pDev->ScatterReqHead);
/* initialize our free list of IO packets */
INIT_HTC_PACKET_QUEUE(&pDev->RegisterIOList);
A_MUTEX_INIT(&pDev->Lock);
A_MEMZERO(&htcCallbacks, sizeof(HTC_CALLBACKS));
/* the device layer handles these */
htcCallbacks.rwCompletionHandler = DevRWCompletionHandler;
htcCallbacks.dsrHandler = DevDsrHandler;
htcCallbacks.context = pDev;
status = HIFAttachHTC(pDev->HIFDevice, &htcCallbacks);
if (A_FAILED(status)) {
break;
}
pDev->HifAttached = TRUE;
/* get the addresses for all 4 mailboxes */
status = HIFConfigureDevice(pDev->HIFDevice, HIF_DEVICE_GET_MBOX_ADDR,
&pDev->MailBoxInfo, sizeof(pDev->MailBoxInfo));
if (status != A_OK) {
A_ASSERT(FALSE);
break;
}
/* carve up register I/O packets (these are for ASYNC register I/O ) */
for (i = 0; i < AR6K_MAX_REG_IO_BUFFERS; i++) {
HTC_PACKET *pIOPacket;
pIOPacket = &pDev->RegIOBuffers[i].HtcPacket;
SET_HTC_PACKET_INFO_RX_REFILL(pIOPacket,
pDev,
pDev->RegIOBuffers[i].Buffer,
AR6K_REG_IO_BUFFER_SIZE,
0); /* don't care */
AR6KFreeIOPacket(pDev,pIOPacket);
}
/* get the block sizes */
status = HIFConfigureDevice(pDev->HIFDevice, HIF_DEVICE_GET_MBOX_BLOCK_SIZE,
blocksizes, sizeof(blocksizes));
if (status != A_OK) {
A_ASSERT(FALSE);
break;
}
/* note: we actually get the block size of a mailbox other than 0, for SDIO the block
* size on mailbox 0 is artificially set to 1. So we use the block size that is set
* for the other 3 mailboxes */
pDev->BlockSize = blocksizes[MAILBOX_FOR_BLOCK_SIZE];
/* must be a power of 2 */
A_ASSERT((pDev->BlockSize & (pDev->BlockSize - 1)) == 0);
/* assemble mask, used for padding to a block */
pDev->BlockMask = pDev->BlockSize - 1;
AR_DEBUG_PRINTF(ATH_DEBUG_TRC,("BlockSize: %d, MailboxAddress:0x%X \n",
pDev->BlockSize, pDev->MailBoxInfo.MboxAddresses[HTC_MAILBOX]));
pDev->GetPendingEventsFunc = NULL;
/* see if the HIF layer implements the get pending events function */
HIFConfigureDevice(pDev->HIFDevice,
HIF_DEVICE_GET_PENDING_EVENTS_FUNC,
&pDev->GetPendingEventsFunc,
sizeof(pDev->GetPendingEventsFunc));
/* assume we can process HIF interrupt events asynchronously */
pDev->HifIRQProcessingMode = HIF_DEVICE_IRQ_ASYNC_SYNC;
/* see if the HIF layer overrides this assumption */
HIFConfigureDevice(pDev->HIFDevice,
HIF_DEVICE_GET_IRQ_PROC_MODE,
&pDev->HifIRQProcessingMode,
sizeof(pDev->HifIRQProcessingMode));
switch (pDev->HifIRQProcessingMode) {
case HIF_DEVICE_IRQ_SYNC_ONLY:
AR_DEBUG_PRINTF(ATH_DEBUG_WARN,("HIF Interrupt processing is SYNC ONLY\n"));
/* see if HIF layer wants HTC to yield */
HIFConfigureDevice(pDev->HIFDevice,
HIF_DEVICE_GET_IRQ_YIELD_PARAMS,
&pDev->HifIRQYieldParams,
sizeof(pDev->HifIRQYieldParams));
if (pDev->HifIRQYieldParams.RecvPacketYieldCount > 0) {
AR_DEBUG_PRINTF(ATH_DEBUG_WARN,
("HIF requests that DSR yield per %d RECV packets \n",
pDev->HifIRQYieldParams.RecvPacketYieldCount));
pDev->DSRCanYield = TRUE;
}
break;
case HIF_DEVICE_IRQ_ASYNC_SYNC:
AR_DEBUG_PRINTF(ATH_DEBUG_TRC,("HIF Interrupt processing is ASYNC and SYNC\n"));
break;
default:
A_ASSERT(FALSE);
}
pDev->HifMaskUmaskRecvEvent = NULL;
/* see if the HIF layer implements the mask/unmask recv events function */
HIFConfigureDevice(pDev->HIFDevice,
HIF_DEVICE_GET_RECV_EVENT_MASK_UNMASK_FUNC,
&pDev->HifMaskUmaskRecvEvent,
sizeof(pDev->HifMaskUmaskRecvEvent));
AR_DEBUG_PRINTF(ATH_DEBUG_TRC,("HIF special overrides : 0x%lX , 0x%lX\n",
(unsigned long)pDev->GetPendingEventsFunc, (unsigned long)pDev->HifMaskUmaskRecvEvent));
status = DevDisableInterrupts(pDev);
if (A_FAILED(status)) {
break;
}
status = DevSetupGMbox(pDev);
} while (FALSE);
if (A_FAILED(status)) {
if (pDev->HifAttached) {
HIFDetachHTC(pDev->HIFDevice);
pDev->HifAttached = FALSE;
}
}
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"));
printk("HTCStart Enter\n");
/* make sure interrupts are disabled at the chip level,
* this function can be called again from a reboot of the target without shutting down HTC */
DevDisableInterrupts(&target->Device);
/* make sure state is cleared again */
target->HTCStateFlags = 0;
/* 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"));
printk("HTCStart Exit\n");
return status;
}