/* * @file: hif.c * * @abstract: HIF layer reference implementation for Atheros SDIO stack * * @notice: Copyright (c) 2004-2006 Atheros Communications Inc. * * * 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 "hif_internal.h" /* ------ Static Variables ------ */ /* ------ Global Variable Declarations ------- */ SD_PNP_INFO Ids[] = { { .SDIO_ManufacturerID = MANUFACTURER_ID_AR6001_BASE | 0xB, .SDIO_ManufacturerCode = MANUFACTURER_CODE, .SDIO_FunctionClass = FUNCTION_CLASS, .SDIO_FunctionNo = 1 }, { .SDIO_ManufacturerID = MANUFACTURER_ID_AR6001_BASE | 0xA, .SDIO_ManufacturerCode = MANUFACTURER_CODE, .SDIO_FunctionClass = FUNCTION_CLASS, .SDIO_FunctionNo = 1 }, { .SDIO_ManufacturerID = MANUFACTURER_ID_AR6001_BASE | 0x9, .SDIO_ManufacturerCode = MANUFACTURER_CODE, .SDIO_FunctionClass = FUNCTION_CLASS, .SDIO_FunctionNo = 1 }, { .SDIO_ManufacturerID = MANUFACTURER_ID_AR6001_BASE | 0x8, .SDIO_ManufacturerCode = MANUFACTURER_CODE, .SDIO_FunctionClass = FUNCTION_CLASS, .SDIO_FunctionNo = 1 }, { .SDIO_ManufacturerID = MANUFACTURER_ID_AR6002_BASE | 0x0, .SDIO_ManufacturerCode = MANUFACTURER_CODE, .SDIO_FunctionClass = FUNCTION_CLASS, .SDIO_FunctionNo = 1 }, { .SDIO_ManufacturerID = MANUFACTURER_ID_AR6002_BASE | 0x1, .SDIO_ManufacturerCode = MANUFACTURER_CODE, .SDIO_FunctionClass = FUNCTION_CLASS, .SDIO_FunctionNo = 1 }, { } //list is null termintaed }; TARGET_FUNCTION_CONTEXT FunctionContext = { .function.Version = CT_SDIO_STACK_VERSION_CODE, .function.pName = "sdio_wlan", .function.MaxDevices = 1, .function.NumDevices = 0, .function.pIds = Ids, .function.pProbe = hifDeviceInserted, .function.pRemove = hifDeviceRemoved, .function.pSuspend = NULL, .function.pResume = NULL, .function.pWake = NULL, .function.pContext = &FunctionContext, }; HIF_DEVICE hifDevice[HIF_MAX_DEVICES]; HTC_CALLBACKS htcCallbacks; BUS_REQUEST busRequest[BUS_REQUEST_MAX_NUM]; static BUS_REQUEST *s_busRequestFreeQueue = NULL; OS_CRITICALSECTION lock; extern A_UINT32 onebitmode; extern A_UINT32 busspeedlow; extern A_UINT32 debughif; #ifdef DEBUG #define ATH_DEBUG_ERROR 1 #define ATH_DEBUG_WARN 2 #define ATH_DEBUG_TRACE 3 #define _AR_DEBUG_PRINTX_ARG(arg...) arg #define AR_DEBUG_PRINTF(lvl, args)\ {if (lvl <= debughif)\ A_PRINTF(KERN_ALERT _AR_DEBUG_PRINTX_ARG args);\ } #else #define AR_DEBUG_PRINTF(lvl, args) #endif static BUS_REQUEST *hifAllocateBusRequest(void); static void hifFreeBusRequest(BUS_REQUEST *busrequest); static THREAD_RETURN insert_helper_func(POSKERNEL_HELPER pHelper); static void ResetAllCards(void); /* ------ Functions ------ */ int HIFInit(HTC_CALLBACKS *callbacks) { SDIO_STATUS status; DBG_ASSERT(callbacks != NULL); /* Store the callback and event handlers */ htcCallbacks.deviceInsertedHandler = callbacks->deviceInsertedHandler; htcCallbacks.deviceRemovedHandler = callbacks->deviceRemovedHandler; htcCallbacks.deviceSuspendHandler = callbacks->deviceSuspendHandler; htcCallbacks.deviceResumeHandler = callbacks->deviceResumeHandler; htcCallbacks.deviceWakeupHandler = callbacks->deviceWakeupHandler; htcCallbacks.rwCompletionHandler = callbacks->rwCompletionHandler; htcCallbacks.dsrHandler = callbacks->dsrHandler; CriticalSectionInit(&lock); /* Register with bus driver core */ status = SDIO_RegisterFunction(&FunctionContext.function); DBG_ASSERT(SDIO_SUCCESS(status)); return(0); } A_STATUS HIFReadWrite(HIF_DEVICE *device, A_UINT32 address, A_UCHAR *buffer, A_UINT32 length, A_UINT32 request, void *context) { A_UINT8 rw; A_UINT8 mode; A_UINT8 funcNo; A_UINT8 opcode; A_UINT16 count; SDREQUEST *sdrequest; SDIO_STATUS sdiostatus; BUS_REQUEST *busrequest; A_STATUS status = A_OK; DBG_ASSERT(device != NULL); DBG_ASSERT(device->handle != NULL); AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("Device: %p\n", device)); do { busrequest = hifAllocateBusRequest(); if (busrequest == NULL) { AR_DEBUG_PRINTF(ATH_DEBUG_ERROR, ("HIF Unable to allocate bus request\n")); status = A_NO_RESOURCE; break; } sdrequest = busrequest->request; busrequest->context = context; sdrequest->pDataBuffer = buffer; if (request & HIF_SYNCHRONOUS) { sdrequest->Flags = SDREQ_FLAGS_RESP_SDIO_R5 | SDREQ_FLAGS_DATA_TRANS; sdrequest->pCompleteContext = NULL; sdrequest->pCompletion = NULL; AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("Execution mode: Synchronous\n")); } else if (request & HIF_ASYNCHRONOUS) { sdrequest->Flags = SDREQ_FLAGS_RESP_SDIO_R5 | SDREQ_FLAGS_DATA_TRANS | SDREQ_FLAGS_TRANS_ASYNC; sdrequest->pCompleteContext = busrequest; sdrequest->pCompletion = hifRWCompletionHandler; AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("Execution mode: Asynchronous\n")); } else { AR_DEBUG_PRINTF(ATH_DEBUG_ERROR, ("Invalid execution mode: 0x%08x\n", request)); status = A_EINVAL; break; } if (request & HIF_EXTENDED_IO) { AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("Command type: CMD53\n")); sdrequest->Command = CMD53; } else { AR_DEBUG_PRINTF(ATH_DEBUG_ERROR, ("Invalid command type: 0x%08x\n", request)); status = A_EINVAL; break; } if (request & HIF_BLOCK_BASIS) { mode = CMD53_BLOCK_BASIS; sdrequest->BlockLen = HIF_MBOX_BLOCK_SIZE; sdrequest->BlockCount = length / HIF_MBOX_BLOCK_SIZE; count = sdrequest->BlockCount; AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("Block mode (BlockLen: %d, BlockCount: %d)\n", sdrequest->BlockLen, sdrequest->BlockCount)); } else if (request & HIF_BYTE_BASIS) { mode = CMD53_BYTE_BASIS; sdrequest->BlockLen = length; sdrequest->BlockCount = 1; count = sdrequest->BlockLen; AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("Byte mode (BlockLen: %d, BlockCount: %d)\n", sdrequest->BlockLen, sdrequest->BlockCount)); } else { AR_DEBUG_PRINTF(ATH_DEBUG_ERROR, ("Invalid data mode: 0x%08x\n", request)); status = A_EINVAL; break; } #if 0 /* useful for checking register accesses */ if (length & 0x3) { A_PRINTF(KERN_ALERT"HIF (%s) is not a multiple of 4 bytes, addr:0x%X, len:%d\n", request & HIF_WRITE ? "write":"read", address, length); } #endif if ((address >= HIF_MBOX_START_ADDR(0)) && (address <= HIF_MBOX_END_ADDR(3))) { DBG_ASSERT(length <= HIF_MBOX_WIDTH); /* * Mailbox write. Adjust the address so that the last byte * falls on the EOM address. */ address += (HIF_MBOX_WIDTH - length); } if (request & HIF_WRITE) { rw = CMD53_WRITE; sdrequest->Flags |= SDREQ_FLAGS_DATA_WRITE; AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("Direction: Write\n")); } else if (request & HIF_READ) { rw = CMD53_READ; AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("Direction: Read\n")); } else { AR_DEBUG_PRINTF(ATH_DEBUG_ERROR, ("Invalid direction: 0x%08x\n", request)); status = A_EINVAL; break; } if (request & HIF_FIXED_ADDRESS) { opcode = CMD53_FIXED_ADDRESS; AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("Address mode: Fixed\n")); } else if (request & HIF_INCREMENTAL_ADDRESS) { opcode = CMD53_INCR_ADDRESS; AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("Address mode: Incremental\n")); } else { AR_DEBUG_PRINTF(ATH_DEBUG_ERROR, ("Invalid address mode: 0x%08x\n", request)); status = A_EINVAL; break; } funcNo = SDDEVICE_GET_SDIO_FUNCNO(device->handle); AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("Function number: %d\n", funcNo)); SDIO_SET_CMD53_ARG(sdrequest->Argument, rw, funcNo, mode, opcode, address, count); /* Send the command out */ sdiostatus = SDDEVICE_CALL_REQUEST_FUNC(device->handle, sdrequest); if (!SDIO_SUCCESS(sdiostatus)) { status = A_ERROR; } } while (FALSE); if (A_FAILED(status) || (request & HIF_SYNCHRONOUS)) { if (busrequest != NULL) { hifFreeBusRequest(busrequest); } } if (A_FAILED(status) && (request & HIF_ASYNCHRONOUS)) { /* call back async handler on failure */ htcCallbacks.rwCompletionHandler(context, status); } return status; } A_STATUS HIFConfigureDevice(HIF_DEVICE *device, HIF_DEVICE_CONFIG_OPCODE opcode, void *config, A_UINT32 configLen) { A_UINT32 count; switch(opcode) { case HIF_DEVICE_GET_MBOX_BLOCK_SIZE: ((A_UINT32 *)config)[0] = HIF_MBOX0_BLOCK_SIZE; ((A_UINT32 *)config)[1] = HIF_MBOX1_BLOCK_SIZE; ((A_UINT32 *)config)[2] = HIF_MBOX2_BLOCK_SIZE; ((A_UINT32 *)config)[3] = HIF_MBOX3_BLOCK_SIZE; break; case HIF_DEVICE_GET_MBOX_ADDR: for (count = 0; count < 4; count ++) { ((A_UINT32 *)config)[count] = HIF_MBOX_START_ADDR(count); } break; case HIF_DEVICE_GET_IRQ_PROC_MODE: /* the SDIO stack allows the interrupts to be processed either way, ASYNC or SYNC */ *((HIF_DEVICE_IRQ_PROCESSING_MODE *)config) = HIF_DEVICE_IRQ_ASYNC_SYNC; break; default: AR_DEBUG_PRINTF(ATH_DEBUG_WARN, ("Unsupported configuration opcode: %d\n", opcode)); return A_ERROR; } return A_OK; } void HIFShutDownDevice(HIF_DEVICE *device) { A_UINT8 data; A_UINT32 count; SDIO_STATUS status; SDCONFIG_BUS_MODE_DATA busSettings; SDCONFIG_FUNC_ENABLE_DISABLE_DATA fData; if (device != NULL) { DBG_ASSERT(device->handle != NULL); /* Remove the allocated current if any */ status = SDLIB_IssueConfig(device->handle, SDCONFIG_FUNC_FREE_SLOT_CURRENT, NULL, 0); DBG_ASSERT(SDIO_SUCCESS(status)); /* Disable the card */ fData.EnableFlags = SDCONFIG_DISABLE_FUNC; fData.TimeOut = 1; status = SDLIB_IssueConfig(device->handle, SDCONFIG_FUNC_ENABLE_DISABLE, &fData, sizeof(fData)); DBG_ASSERT(SDIO_SUCCESS(status)); /* Perform a soft I/O reset */ data = SDIO_IO_RESET; status = SDLIB_IssueCMD52(device->handle, 0, SDIO_IO_ABORT_REG, &data, 1, 1); DBG_ASSERT(SDIO_SUCCESS(status)); /* * WAR - Codetelligence driver does not seem to shutdown correctly in 1 * bit mode. By default it configures the HC in the 4 bit. Its later in * our driver that we switch to 1 bit mode. If we try to shutdown, the * driver hangs so we revert to 4 bit mode, to be transparent to the * underlying bus driver. */ if (onebitmode) { ZERO_OBJECT(busSettings); busSettings.BusModeFlags = SDDEVICE_GET_BUSMODE_FLAGS(device->handle); SDCONFIG_SET_BUS_WIDTH(busSettings.BusModeFlags, SDCONFIG_BUS_WIDTH_4_BIT); /* Issue config request to change the bus width to 4 bit */ status = SDLIB_IssueConfig(device->handle, SDCONFIG_BUS_MODE_CTRL, &busSettings, sizeof(SDCONFIG_BUS_MODE_DATA)); DBG_ASSERT(SDIO_SUCCESS(status)); } /* Free the bus requests */ for (count = 0; count < BUS_REQUEST_MAX_NUM; count ++) { SDDeviceFreeRequest(device->handle, busRequest[count].request); } /* Clean up the queue */ s_busRequestFreeQueue = NULL; } else { /* since we are unloading the driver anyways, reset all cards in case the SDIO card * is externally powered and we are unloading the SDIO stack. This avoids the problem when * the SDIO stack is reloaded and attempts are made to re-enumerate a card that is already * enumerated */ ResetAllCards(); /* Unregister with bus driver core */ AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("Unregistering with the bus driver\n")); status = SDIO_UnregisterFunction(&FunctionContext.function); DBG_ASSERT(SDIO_SUCCESS(status)); } } void hifRWCompletionHandler(SDREQUEST *request) { A_STATUS status; void *context; BUS_REQUEST *busrequest; if (SDIO_SUCCESS(request->Status)) { status = A_OK; } else { status = A_ERROR; } DBG_ASSERT(status == A_OK); busrequest = (BUS_REQUEST *) request->pCompleteContext; context = (void *) busrequest->context; /* free the request before calling the callback, in case the * callback submits another request, this guarantees that * there is at least 1 free request available everytime the callback * is invoked */ hifFreeBusRequest(busrequest); htcCallbacks.rwCompletionHandler(context, status); } void hifIRQHandler(void *context) { A_STATUS status; HIF_DEVICE *device; device = (HIF_DEVICE *)context; AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("Device: %p\n", device)); status = htcCallbacks.dsrHandler(device->htc_handle); DBG_ASSERT(status == A_OK); } BOOL hifDeviceInserted(SDFUNCTION *function, SDDEVICE *handle) { BOOL enabled; A_UINT8 data; A_UINT32 count; HIF_DEVICE *device; SDIO_STATUS status; A_UINT16 maxBlocks; A_UINT16 maxBlockSize; SDCONFIG_BUS_MODE_DATA busSettings; SDCONFIG_FUNC_ENABLE_DISABLE_DATA fData; TARGET_FUNCTION_CONTEXT *functionContext; SDCONFIG_FUNC_SLOT_CURRENT_DATA slotCurrent; SD_BUSCLOCK_RATE currentBusClock; DBG_ASSERT(function != NULL); DBG_ASSERT(handle != NULL); device = addHifDevice(handle); AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("Device: %p\n", device)); functionContext = (TARGET_FUNCTION_CONTEXT *)function->pContext; /* * Issue commands to get the manufacturer ID and stuff and compare it * against the rev Id derived from the ID registered during the * initialization process. Report the device only in the case there * is a match. In the case od SDIO, the bus driver has already queried * these details so we just need to use their data structures to get the * relevant values. Infact, the driver has already matched it against * the Ids that we registered with it so we dont need to the step here. */ /* Configure the SDIO Bus Width */ if (onebitmode) { data = SDIO_BUS_WIDTH_1_BIT; status = SDLIB_IssueCMD52(handle, 0, SDIO_BUS_IF_REG, &data, 1, 1); if (!SDIO_SUCCESS(status)) { AR_DEBUG_PRINTF(ATH_DEBUG_ERROR, ("Unable to set the bus width to 1 bit\n")); return FALSE; } } /* Get current bus flags */ ZERO_OBJECT(busSettings); busSettings.BusModeFlags = SDDEVICE_GET_BUSMODE_FLAGS(handle); if (onebitmode) { SDCONFIG_SET_BUS_WIDTH(busSettings.BusModeFlags, SDCONFIG_BUS_WIDTH_1_BIT); } /* get the current operating clock, the bus driver sets us up based * on what our CIS reports and what the host controller can handle * we can use this to determine whether we want to drop our clock rate * down */ currentBusClock = SDDEVICE_GET_OPER_CLOCK(handle); busSettings.ClockRate = currentBusClock; AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("HIF currently running at: %d \n",currentBusClock)); /* see if HIF wants to run at a lower clock speed, we may already be * at that lower clock speed */ if (currentBusClock > (SDIO_CLOCK_FREQUENCY_DEFAULT >> busspeedlow)) { busSettings.ClockRate = SDIO_CLOCK_FREQUENCY_DEFAULT >> busspeedlow; AR_DEBUG_PRINTF(ATH_DEBUG_WARN, ("HIF overriding clock to %d \n",busSettings.ClockRate)); } /* Issue config request to override clock rate */ status = SDLIB_IssueConfig(handle, SDCONFIG_FUNC_CHANGE_BUS_MODE, &busSettings, sizeof(SDCONFIG_BUS_MODE_DATA)); if (!SDIO_SUCCESS(status)) { AR_DEBUG_PRINTF(ATH_DEBUG_ERROR, ("Unable to configure the host clock\n")); return FALSE; } else { AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("Configured clock: %d, Maximum clock: %d\n", busSettings.ActualClockRate, SDDEVICE_GET_MAX_CLOCK(handle))); } /* * Check if the target supports block mode. This result of this check * can be used to implement the HIFReadWrite API. */ if (SDDEVICE_GET_SDIO_FUNC_MAXBLKSIZE(handle)) { /* Limit block size to operational block limit or card function capability */ maxBlockSize = min(SDDEVICE_GET_OPER_BLOCK_LEN(handle), SDDEVICE_GET_SDIO_FUNC_MAXBLKSIZE(handle)); /* check if the card support multi-block transfers */ if (!(SDDEVICE_GET_SDIOCARD_CAPS(handle) & SDIO_CAPS_MULTI_BLOCK)) { AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("Byte basis only\n")); /* Limit block size to max byte basis */ maxBlockSize = min(maxBlockSize, (A_UINT16)SDIO_MAX_LENGTH_BYTE_BASIS); maxBlocks = 1; } else { AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("Multi-block capable\n")); maxBlocks = SDDEVICE_GET_OPER_BLOCKS(handle); status = SDLIB_SetFunctionBlockSize(handle, HIF_MBOX_BLOCK_SIZE); if (!SDIO_SUCCESS(status)) { AR_DEBUG_PRINTF(ATH_DEBUG_ERROR, ("Failed to set block size. Err:%d\n", status)); return FALSE; } } AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("Bytes Per Block: %d bytes, Block Count:%d \n", maxBlockSize, maxBlocks)); } else { AR_DEBUG_PRINTF(ATH_DEBUG_ERROR, ("Function does not support Block Mode!\n")); return FALSE; } /* Allocate the slot current */ status = SDLIB_GetDefaultOpCurrent(handle, &slotCurrent.SlotCurrent); if (SDIO_SUCCESS(status)) { AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("Allocating Slot current: %d mA\n", slotCurrent.SlotCurrent)); status = SDLIB_IssueConfig(handle, SDCONFIG_FUNC_ALLOC_SLOT_CURRENT, &slotCurrent, sizeof(slotCurrent)); if (!SDIO_SUCCESS(status)) { AR_DEBUG_PRINTF(ATH_DEBUG_ERROR, ("Failed to allocate slot current %d\n", status)); return FALSE; } } /* Enable the dragon function */ count = 0; enabled = FALSE; fData.TimeOut = 1; fData.EnableFlags = SDCONFIG_ENABLE_FUNC; while ((count++ < SDWLAN_ENABLE_DISABLE_TIMEOUT) && !enabled) { /* Enable dragon */ status = SDLIB_IssueConfig(handle, SDCONFIG_FUNC_ENABLE_DISABLE, &fData, sizeof(fData)); if (!SDIO_SUCCESS(status)) { AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("Attempting to enable the card again\n")); continue; } /* Mark the status as enabled */ enabled = TRUE; } /* Check if we were succesful in enabling the target */ if (!enabled) { AR_DEBUG_PRINTF(ATH_DEBUG_ERROR, ("Failed to communicate with the target\n")); return FALSE; } /* Allocate the bus requests to be used later */ A_MEMZERO(busRequest, sizeof(busRequest)); for (count = 0; count < BUS_REQUEST_MAX_NUM; count ++) { if ((busRequest[count].request = SDDeviceAllocRequest(handle)) == NULL){ AR_DEBUG_PRINTF(ATH_DEBUG_ERROR, ("Unable to allocate memory\n")); /* TODO: Free the memory that has already been allocated */ return FALSE; } hifFreeBusRequest(&busRequest[count]); AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("0x%08x = busRequest[%d].request = 0x%08x\n", (unsigned int) &busRequest[count], count, (unsigned int) busRequest[count].request)); } /* Schedule a worker to handle device inserted, this is a temporary workaround * to fix a deadlock if the device fails to intialize in the insertion handler * The failure causes the instance to shutdown the HIF layer and unregister the * function driver within the busdriver probe context which can deadlock * * NOTE: we cannot use the default work queue because that would block * SD bus request processing for all synchronous I/O. We must use a kernel * thread that is creating using the helper library. * */ if (SDIO_SUCCESS(SDLIB_OSCreateHelper(&device->insert_helper, insert_helper_func, device))) { device->helper_started = TRUE; } return TRUE; } static THREAD_RETURN insert_helper_func(POSKERNEL_HELPER pHelper) { /* * Adding a wait of around a second before we issue the very first * command to dragon. During the process of loading/unloading the * driver repeatedly it was observed that we get a data timeout * while accessing function 1 registers in the chip. The theory at * this point is that some initialization delay in dragon is * causing the SDIO state in dragon core to be not ready even after * the ready bit indicates that function 1 is ready. Accomodating * for this behavior by adding some delay in the driver before it * issues the first command after switching on dragon. Need to * investigate this a bit more - TODO */ A_MDELAY(1000); /* Inform HTC */ if ((htcCallbacks.deviceInsertedHandler(SD_GET_OS_HELPER_CONTEXT(pHelper))) != A_OK) { AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("Device rejected\n")); } return 0; } void HIFAckInterrupt(HIF_DEVICE *device) { SDIO_STATUS status; DBG_ASSERT(device != NULL); DBG_ASSERT(device->handle != NULL); /* Acknowledge our function IRQ */ status = SDLIB_IssueConfig(device->handle, SDCONFIG_FUNC_ACK_IRQ, NULL, 0); DBG_ASSERT(SDIO_SUCCESS(status)); } void HIFUnMaskInterrupt(HIF_DEVICE *device) { SDIO_STATUS status; DBG_ASSERT(device != NULL); DBG_ASSERT(device->handle != NULL); /* Register the IRQ Handler */ SDDEVICE_SET_IRQ_HANDLER(device->handle, hifIRQHandler, device); /* Unmask our function IRQ */ status = SDLIB_IssueConfig(device->handle, SDCONFIG_FUNC_UNMASK_IRQ, NULL, 0); DBG_ASSERT(SDIO_SUCCESS(status)); } void HIFMaskInterrupt(HIF_DEVICE *device) { SDIO_STATUS status; DBG_ASSERT(device != NULL); DBG_ASSERT(device->handle != NULL); /* Mask our function IRQ */ status = SDLIB_IssueConfig(device->handle, SDCONFIG_FUNC_MASK_IRQ, NULL, 0); DBG_ASSERT(SDIO_SUCCESS(status)); /* Unregister the IRQ Handler */ SDDEVICE_SET_IRQ_HANDLER(device->handle, NULL, NULL); } static BUS_REQUEST *hifAllocateBusRequest(void) { BUS_REQUEST *busrequest; /* Acquire lock */ CriticalSectionAcquire(&lock); /* Remove first in list */ if((busrequest = s_busRequestFreeQueue) != NULL) { s_busRequestFreeQueue = busrequest->next; } /* Release lock */ CriticalSectionRelease(&lock); return busrequest; } static void hifFreeBusRequest(BUS_REQUEST *busrequest) { DBG_ASSERT(busrequest != NULL); /* Acquire lock */ CriticalSectionAcquire(&lock); /* Insert first in list */ busrequest->next = s_busRequestFreeQueue; s_busRequestFreeQueue = busrequest; /* Release lock */ CriticalSectionRelease(&lock); } void hifDeviceRemoved(SDFUNCTION *function, SDDEVICE *handle) { A_STATUS status; HIF_DEVICE *device; DBG_ASSERT(function != NULL); DBG_ASSERT(handle != NULL); device = getHifDevice(handle); status = htcCallbacks.deviceRemovedHandler(device->htc_handle, A_OK); /* cleanup the helper thread */ if (device->helper_started) { SDLIB_OSDeleteHelper(&device->insert_helper); device->helper_started = FALSE; } delHifDevice(handle); DBG_ASSERT(status == A_OK); } HIF_DEVICE * addHifDevice(SDDEVICE *handle) { DBG_ASSERT(handle != NULL); hifDevice[0].handle = handle; return &hifDevice[0]; } HIF_DEVICE * getHifDevice(SDDEVICE *handle) { DBG_ASSERT(handle != NULL); return &hifDevice[0]; } void delHifDevice(SDDEVICE *handle) { DBG_ASSERT(handle != NULL); hifDevice[0].handle = NULL; } static void ResetAllCards(void) { UINT8 data; SDIO_STATUS status; int i; data = SDIO_IO_RESET; /* set the I/O CARD reset bit: * NOTE: we are exploiting a "feature" of the SDIO core that resets the core when you * set the RES bit in the SDIO_IO_ABORT register. This bit however "normally" resets the * I/O functions leaving the SDIO core in the same state (as per SDIO spec). * In this design, this reset can be used to reset the SDIO core itself */ for (i = 0; i < HIF_MAX_DEVICES; i++) { if (hifDevice[i].handle != NULL) { AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("Issuing I/O Card reset for instance: %d \n",i)); /* set the I/O Card reset bit */ status = SDLIB_IssueCMD52(hifDevice[i].handle, 0, /* function 0 space */ SDIO_IO_ABORT_REG, &data, 1, /* 1 byte */ TRUE); /* write */ } } } void HIFSetHandle(void *hif_handle, void *handle) { HIF_DEVICE *device = (HIF_DEVICE *) hif_handle; device->htc_handle = handle; return; }