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Unified Diff: chromeos/drivers/ath6kl/hif/sdio/linux_sdio/src/hif.c

Issue 646055: Atheros AR600x driver + build glue (Closed)
Patch Set: Created 10 years, 10 months ago
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Index: chromeos/drivers/ath6kl/hif/sdio/linux_sdio/src/hif.c
diff --git a/chromeos/drivers/ath6kl/hif/sdio/linux_sdio/src/hif.c b/chromeos/drivers/ath6kl/hif/sdio/linux_sdio/src/hif.c
new file mode 100644
index 0000000000000000000000000000000000000000..f1b19b2ff2997d9fd8a8407966b3d81194862a0f
--- /dev/null
+++ b/chromeos/drivers/ath6kl/hif/sdio/linux_sdio/src/hif.c
@@ -0,0 +1,813 @@
+//------------------------------------------------------------------------------
+// <copyright file="hif.c" company="Atheros">
+// Copyright (c) 2004-2008 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.
+//
+//
+//------------------------------------------------------------------------------
+//==============================================================================
+// HIF layer reference implementation for Linux Native MMC stack
+//
+// Author(s): ="Atheros"
+//==============================================================================
+#include <linux/mmc/card.h>
+#include <linux/mmc/sdio_func.h>
+#include <linux/mmc/sdio_ids.h>
+#include <linux/mmc/sdio.h>
+#include <linux/kthread.h>
+
+/* by default setup a bounce buffer for the data packets, if the underlying host controller driver
+ does not use DMA you may be able to skip this step and save the memory allocation and transfer time */
+#define HIF_USE_DMA_BOUNCE_BUFFER 1
+#include "hif_internal.h"
+#define ATH_MODULE_NAME hif
+#include "a_debug.h"
+
+
+#if HIF_USE_DMA_BOUNCE_BUFFER
+/* macro to check if DMA buffer is WORD-aligned and DMA-able. Most host controllers assume the
+ * buffer is DMA'able and will bug-check otherwise (i.e. buffers on the stack).
+ * virt_addr_valid check fails on stack memory.
+ */
+#define BUFFER_NEEDS_BOUNCE(buffer) (((A_UINT32)(buffer) & 0x3) || !virt_addr_valid((buffer)))
+#else
+#define BUFFER_NEEDS_BOUNCE(buffer) (FALSE)
+#endif
+
+static int hifDeviceInserted(struct sdio_func *func, const struct sdio_device_id *id);
+static void hifDeviceRemoved(struct sdio_func *func);
+static HIF_DEVICE *addHifDevice(struct sdio_func *func);
+static HIF_DEVICE *getHifDevice(struct sdio_func *func);
+static void delHifDevice(HIF_DEVICE * device);
+static int Func0_CMD52WriteByte(struct mmc_card *card, unsigned int address, unsigned char byte);
+
+int reset_sdio_on_unload = 0;
+module_param(reset_sdio_on_unload, int, 0644);
+
+/* ------ Static Variables ------ */
+static const struct sdio_device_id ar6k_id_table[] = {
+ { SDIO_DEVICE(MANUFACTURER_CODE, (MANUFACTURER_ID_AR6002_BASE | 0x0)) },
+ { SDIO_DEVICE(MANUFACTURER_CODE, (MANUFACTURER_ID_AR6002_BASE | 0x1)) },
+ { SDIO_DEVICE(MANUFACTURER_CODE, (MANUFACTURER_ID_AR6003_BASE | 0x0)) },
+ { /* null */ },
+};
+MODULE_DEVICE_TABLE(sdio, ar6k_id_table);
+
+static struct sdio_driver ar6k_driver = {
+ .name = "ar6k_wlan",
+ .id_table = ar6k_id_table,
+ .probe = hifDeviceInserted,
+ .remove = hifDeviceRemoved,
+};
+/* make sure we only unregister when registered. */
+static int registered = 0;
+
+OSDRV_CALLBACKS osdrvCallbacks;
+extern A_UINT32 onebitmode;
+extern A_UINT32 busspeedlow;
+extern A_UINT32 debughif;
+
+static BUS_REQUEST *hifAllocateBusRequest(HIF_DEVICE *device);
+static void hifFreeBusRequest(HIF_DEVICE *device, BUS_REQUEST *busrequest);
+static void ResetAllCards(void);
+
+#ifdef DEBUG
+
+ATH_DEBUG_INSTANTIATE_MODULE_VAR(hif,
+ "hif",
+ "(Linux MMC) Host Interconnect Framework",
+ ATH_DEBUG_MASK_DEFAULTS,
+ 0,
+ NULL);
+
+#endif
+
+
+/* ------ Functions ------ */
+A_STATUS HIFInit(OSDRV_CALLBACKS *callbacks)
+{
+ int status;
+ AR_DEBUG_ASSERT(callbacks != NULL);
+
+ A_REGISTER_MODULE_DEBUG_INFO(hif);
+
+ /* store the callback handlers */
+ osdrvCallbacks = *callbacks;
+
+ /* Register with bus driver core */
+ AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("AR6000: HIFInit registering\n"));
+ registered = 1;
+ status = sdio_register_driver(&ar6k_driver);
+ AR_DEBUG_ASSERT(status==0);
+
+ if (status != 0) {
+ return A_ERROR;
+ }
+
+ return A_OK;
+
+}
+
+static A_STATUS
+__HIFReadWrite(HIF_DEVICE *device,
+ A_UINT32 address,
+ A_UCHAR *buffer,
+ A_UINT32 length,
+ A_UINT32 request,
+ void *context)
+{
+ A_UINT8 opcode;
+ A_STATUS status = A_OK;
+ int ret;
+ A_UINT8 *tbuffer;
+ A_BOOL bounced = FALSE;
+
+ AR_DEBUG_ASSERT(device != NULL);
+ AR_DEBUG_ASSERT(device->func != NULL);
+
+ AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("AR6000: Device: 0x%p, buffer:0x%p (addr:0x%X)\n",
+ device, buffer, address));
+
+ do {
+ if (request & HIF_EXTENDED_IO) {
+ //AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("AR6000: Command type: CMD53\n"));
+ } else {
+ AR_DEBUG_PRINTF(ATH_DEBUG_ERROR,
+ ("AR6000: Invalid command type: 0x%08x\n", request));
+ status = A_EINVAL;
+ break;
+ }
+
+ if (request & HIF_BLOCK_BASIS) {
+ /* round to whole block length size */
+ length = (length / HIF_MBOX_BLOCK_SIZE) * HIF_MBOX_BLOCK_SIZE;
+ AR_DEBUG_PRINTF(ATH_DEBUG_TRACE,
+ ("AR6000: Block mode (BlockLen: %d)\n",
+ length));
+ } else if (request & HIF_BYTE_BASIS) {
+ AR_DEBUG_PRINTF(ATH_DEBUG_TRACE,
+ ("AR6000: Byte mode (BlockLen: %d)\n",
+ length));
+ } else {
+ AR_DEBUG_PRINTF(ATH_DEBUG_ERROR,
+ ("AR6000: 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"AR6000: HIF (%s) is not a multiple of 4 bytes, addr:0x%X, len:%d\n",
+ request & HIF_WRITE ? "write":"read", address, length);
+ }
+#endif
+
+ if (request & HIF_WRITE) {
+ if ((address >= HIF_MBOX_START_ADDR(0)) &&
+ (address <= HIF_MBOX_END_ADDR(3)))
+ {
+
+ AR_DEBUG_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_FIXED_ADDRESS) {
+ opcode = CMD53_FIXED_ADDRESS;
+ AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("AR6000: Address mode: Fixed 0x%X\n", address));
+ } else if (request & HIF_INCREMENTAL_ADDRESS) {
+ opcode = CMD53_INCR_ADDRESS;
+ AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("AR6000: Address mode: Incremental 0x%X\n", address));
+ } else {
+ AR_DEBUG_PRINTF(ATH_DEBUG_ERROR,
+ ("AR6000: Invalid address mode: 0x%08x\n", request));
+ status = A_EINVAL;
+ break;
+ }
+
+ if (request & HIF_WRITE) {
+#if HIF_USE_DMA_BOUNCE_BUFFER
+ if (BUFFER_NEEDS_BOUNCE(buffer)) {
+ AR_DEBUG_ASSERT(device->dma_buffer != NULL);
+ tbuffer = device->dma_buffer;
+ /* copy the write data to the dma buffer */
+ AR_DEBUG_ASSERT(length <= HIF_DMA_BUFFER_SIZE);
+ memcpy(tbuffer, buffer, length);
+ bounced = TRUE;
+ } else {
+ tbuffer = buffer;
+ }
+#else
+ tbuffer = buffer;
+#endif
+ if (opcode == CMD53_FIXED_ADDRESS) {
+ ret = sdio_writesb(device->func, address, tbuffer, length);
+ AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("AR6000: writesb ret=%d address: 0x%X, len: %d, 0x%X\n",
+ ret, address, length, *(int *)tbuffer));
+ } else {
+ ret = sdio_memcpy_toio(device->func, address, tbuffer, length);
+ AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("AR6000: writeio ret=%d address: 0x%X, len: %d, 0x%X\n",
+ ret, address, length, *(int *)tbuffer));
+ }
+ } else if (request & HIF_READ) {
+#if HIF_USE_DMA_BOUNCE_BUFFER
+ if (BUFFER_NEEDS_BOUNCE(buffer)) {
+ AR_DEBUG_ASSERT(device->dma_buffer != NULL);
+ AR_DEBUG_ASSERT(length <= HIF_DMA_BUFFER_SIZE);
+ tbuffer = device->dma_buffer;
+ bounced = TRUE;
+ } else {
+ tbuffer = buffer;
+ }
+#else
+ tbuffer = buffer;
+#endif
+ if (opcode == CMD53_FIXED_ADDRESS) {
+ ret = sdio_readsb(device->func, tbuffer, address, length);
+ AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("AR6000: readsb ret=%d address: 0x%X, len: %d, 0x%X\n",
+ ret, address, length, *(int *)tbuffer));
+ } else {
+ ret = sdio_memcpy_fromio(device->func, tbuffer, address, length);
+ AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("AR6000: readio ret=%d address: 0x%X, len: %d, 0x%X\n",
+ ret, address, length, *(int *)tbuffer));
+ }
+#if HIF_USE_DMA_BOUNCE_BUFFER
+ if (bounced) {
+ /* copy the read data from the dma buffer */
+ memcpy(buffer, tbuffer, length);
+ }
+#endif
+ } else {
+ AR_DEBUG_PRINTF(ATH_DEBUG_ERROR,
+ ("AR6000: Invalid direction: 0x%08x\n", request));
+ status = A_EINVAL;
+ break;
+ }
+
+ if (ret) {
+ AR_DEBUG_PRINTF(ATH_DEBUG_ERROR,
+ ("AR6000: SDIO bus operation failed! MMC stack returned : %d \n", ret));
+ status = A_ERROR;
+ }
+ } while (FALSE);
+
+ return status;
+}
+
+/* queue a read/write request */
+A_STATUS
+HIFReadWrite(HIF_DEVICE *device,
+ A_UINT32 address,
+ A_UCHAR *buffer,
+ A_UINT32 length,
+ A_UINT32 request,
+ void *context)
+{
+ A_STATUS status = A_OK;
+ unsigned long flags;
+ BUS_REQUEST *busrequest;
+ BUS_REQUEST *async;
+ BUS_REQUEST *active;
+
+ AR_DEBUG_ASSERT(device != NULL);
+ AR_DEBUG_ASSERT(device->func != NULL);
+
+ AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("AR6000: Device: %p addr:0x%X\n", device,address));
+
+ do {
+ if ((request & HIF_ASYNCHRONOUS) || (request & HIF_SYNCHRONOUS)){
+ /* serialize all requests through the async thread */
+ AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("AR6000: Execution mode: %s\n",
+ (request & HIF_ASYNCHRONOUS)?"Async":"Synch"));
+ busrequest = hifAllocateBusRequest(device);
+ if (busrequest == NULL) {
+ AR_DEBUG_PRINTF(ATH_DEBUG_ERROR,
+ ("AR6000: no async bus requests available (%s, addr:0x%X, len:%d) \n",
+ request & HIF_READ ? "READ":"WRITE", address, length));
+ return A_ERROR;
+ }
+ spin_lock_irqsave(&device->asynclock, flags);
+ busrequest->address = address;
+ busrequest->buffer = buffer;
+ busrequest->length = length;
+ busrequest->request = request;
+ busrequest->context = context;
+ /* add to async list */
+ active = device->asyncreq;
+ if (active == NULL) {
+ device->asyncreq = busrequest;
+ device->asyncreq->inusenext = NULL;
+ } else {
+ for (async = device->asyncreq;
+ async != NULL;
+ async = async->inusenext) {
+ active = async;
+ }
+ active->inusenext = busrequest;
+ busrequest->inusenext = NULL;
+ }
+ spin_unlock_irqrestore(&device->asynclock, flags);
+ if (request & HIF_SYNCHRONOUS) {
+ AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("AR6000: queued sync req: 0x%X\n", (unsigned int)busrequest));
+
+ /* wait for completion */
+ up(&device->sem_async);
+ if (down_interruptible(&busrequest->sem_req) != 0) {
+ /* interrupted, exit */
+ return A_ERROR;
+ } else {
+ A_STATUS status = busrequest->status;
+ AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("AR6000: sync return freeing 0x%X: 0x%X\n",
+ (unsigned int)busrequest, busrequest->status));
+ AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("AR6000: freeing req: 0x%X\n", (unsigned int)request));
+ hifFreeBusRequest(device, busrequest);
+ return status;
+ }
+ } else {
+ AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("AR6000: queued async req: 0x%X\n", (unsigned int)busrequest));
+ up(&device->sem_async);
+ return A_PENDING;
+ }
+ } else {
+ AR_DEBUG_PRINTF(ATH_DEBUG_ERROR,
+ ("AR6000: Invalid execution mode: 0x%08x\n", (unsigned int)request));
+ status = A_EINVAL;
+ break;
+ }
+ } while(0);
+
+ return status;
+}
+/* thread to serialize all requests, both sync and async */
+static int async_task(void *param)
+ {
+ HIF_DEVICE *device;
+ BUS_REQUEST *request;
+ A_STATUS status;
+ unsigned long flags;
+
+ device = (HIF_DEVICE *)param;
+ AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("AR6000: async task\n"));
+ set_current_state(TASK_INTERRUPTIBLE);
+ while(!device->async_shutdown) {
+ /* wait for work */
+ if (down_interruptible(&device->sem_async) != 0) {
+ /* interrupted, exit */
+ AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("AR6000: async task interrupted\n"));
+ break;
+ }
+ if (device->async_shutdown) {
+ AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("AR6000: async task stopping\n"));
+ break;
+ }
+ /* we want to hold the host over multiple cmds if possible, but holding the host blocks card interrupts */
+ sdio_claim_host(device->func);
+ spin_lock_irqsave(&device->asynclock, flags);
+ /* pull the request to work on */
+ while (device->asyncreq != NULL) {
+ request = device->asyncreq;
+ if (request->inusenext != NULL) {
+ device->asyncreq = request->inusenext;
+ } else {
+ device->asyncreq = NULL;
+ }
+ spin_unlock_irqrestore(&device->asynclock, flags);
+ /* call HIFReadWrite in sync mode to do the work */
+ AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("AR6000: async_task processing req: 0x%X\n", (unsigned int)request));
+ status = __HIFReadWrite(device, request->address, request->buffer,
+ request->length, request->request & ~HIF_SYNCHRONOUS, NULL);
+ if (request->request & HIF_ASYNCHRONOUS) {
+ void *context = request->context;
+ AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("AR6000: async_task freeing req: 0x%X\n", (unsigned int)request));
+ hifFreeBusRequest(device, request);
+ AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("AR6000: async_task completion routine req: 0x%X\n", (unsigned int)request));
+ device->htcCallbacks.rwCompletionHandler(context, status);
+ } else {
+ AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("AR6000: async_task upping req: 0x%X\n", (unsigned int)request));
+ request->status = status;
+ up(&request->sem_req);
+ }
+ spin_lock_irqsave(&device->asynclock, flags);
+ }
+ spin_unlock_irqrestore(&device->asynclock, flags);
+ sdio_release_host(device->func);
+ }
+
+ complete_and_exit(&device->async_completion, 0);
+ return 0;
+ }
+
+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);
+ }
+
+ if (configLen >= sizeof(HIF_DEVICE_MBOX_INFO)) {
+ SetExtendedMboxWindowInfo((A_UINT16)device->func->device,
+ (HIF_DEVICE_MBOX_INFO *)config);
+ }
+
+ break;
+ case HIF_DEVICE_GET_IRQ_PROC_MODE:
+ *((HIF_DEVICE_IRQ_PROCESSING_MODE *)config) = HIF_DEVICE_IRQ_SYNC_ONLY;
+ break;
+ case HIF_DEVICE_GET_OS_DEVICE:
+ /* pass back a pointer to the SDIO function's "dev" struct */
+ ((HIF_DEVICE_OS_DEVICE_INFO *)config)->pOSDevice = &device->func->dev;
+ break;
+ default:
+ AR_DEBUG_PRINTF(ATH_DEBUG_WARN,
+ ("AR6000: Unsupported configuration opcode: %d\n", opcode));
+ return A_ERROR;
+ }
+
+ return A_OK;
+}
+
+void
+HIFShutDownDevice(HIF_DEVICE *device)
+{
+ AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("AR6000: +HIFShutDownDevice\n"));
+ if (device != NULL) {
+ AR_DEBUG_ASSERT(device->func != 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 */
+ AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("AR6000: HIFShutDownDevice, resetting\n"));
+ ResetAllCards();
+
+ /* Unregister with bus driver core */
+ if (registered) {
+ registered = 0;
+ AR_DEBUG_PRINTF(ATH_DEBUG_TRACE,
+ ("AR6000: Unregistering with the bus driver\n"));
+ sdio_unregister_driver(&ar6k_driver);
+ AR_DEBUG_PRINTF(ATH_DEBUG_TRACE,
+ ("AR6000: Unregistered\n"));
+ }
+ }
+ AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("AR6000: -HIFShutDownDevice\n"));
+}
+
+static void
+hifIRQHandler(struct sdio_func *func)
+{
+ A_STATUS status;
+ HIF_DEVICE *device;
+ AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("AR6000: +hifIRQHandler\n"));
+
+ device = getHifDevice(func);
+ /* release the host during ints so we can pick it back up when we process cmds */
+ sdio_release_host(device->func);
+ status = device->htcCallbacks.dsrHandler(device->htcCallbacks.context);
+ sdio_claim_host(device->func);
+ AR_DEBUG_ASSERT(status == A_OK);
+ AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("AR6000: -hifIRQHandler\n"));
+}
+
+/* handle HTC startup via thread*/
+static int startup_task(void *param)
+{
+ HIF_DEVICE *device;
+
+ device = (HIF_DEVICE *)param;
+ AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("AR6000: call HTC from startup_task\n"));
+ /* start up inform DRV layer */
+ if ((osdrvCallbacks.deviceInsertedHandler(osdrvCallbacks.context,device)) != A_OK) {
+ AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("AR6000: Device rejected\n"));
+ }
+ return 0;
+}
+
+static int hifDeviceInserted(struct sdio_func *func, const struct sdio_device_id *id)
+{
+ int ret;
+ HIF_DEVICE * device;
+ int count;
+ struct task_struct* startup_task_struct;
+
+ AR_DEBUG_PRINTF(ATH_DEBUG_TRACE,
+ ("AR6000: hifDeviceInserted, Function: 0x%X, Vendor ID: 0x%X, Device ID: 0x%X, block size: 0x%X/0x%X\n",
+ func->num, func->vendor, func->device, func->max_blksize, func->cur_blksize));
+
+ addHifDevice(func);
+ device = getHifDevice(func);
+
+ spin_lock_init(&device->lock);
+
+ spin_lock_init(&device->asynclock);
+
+ /* enable the SDIO function */
+ AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("AR6000: claim\n"));
+ sdio_claim_host(func);
+ AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("AR6000: enable\n"));
+ /* give us some time to enable, in ms */
+ func->enable_timeout = 100;
+ ret = sdio_enable_func(func);
+ if (ret) {
+ AR_DEBUG_PRINTF(ATH_DEBUG_ERROR, ("AR6000: %s(), Unable to enable AR6K: 0x%X, timeout: %d\n",
+ __FUNCTION__, ret, func->enable_timeout));
+ sdio_release_host(func);
+ return ret;
+ }
+ AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("AR6000: set block size 0x%X\n", HIF_MBOX_BLOCK_SIZE));
+ ret = sdio_set_block_size(func, HIF_MBOX_BLOCK_SIZE);
+ sdio_release_host(func);
+ if (ret) {
+ AR_DEBUG_PRINTF(ATH_DEBUG_ERROR, ("AR6000: %s(), Unable to set block size 0x%x AR6K: 0x%X\n",
+ __FUNCTION__, HIF_MBOX_BLOCK_SIZE, ret));
+ sdio_release_host(func);
+ return ret;
+ }
+ /* Initialize the bus requests to be used later */
+ A_MEMZERO(device->busRequest, sizeof(device->busRequest));
+ for (count = 0; count < BUS_REQUEST_MAX_NUM; count ++) {
+ sema_init(&device->busRequest[count].sem_req, 0);
+ hifFreeBusRequest(device, &device->busRequest[count]);
+ }
+
+ /* create async I/O thread */
+ device->async_shutdown = 0;
+ device->async_task = kthread_create(async_task,
+ (void *)device,
+ "AR6K Async");
+ if (device->async_task == NULL) {
+ AR_DEBUG_PRINTF(ATH_DEBUG_ERROR, ("AR6000: %s(), to create async task\n", __FUNCTION__));
+ sdio_release_host(func);
+ return A_ERROR;
+ }
+ AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("AR6000: start async task\n"));
+ sema_init(&device->sem_async, 0);
+ wake_up_process(device->async_task );
+
+ /* create startup thread */
+ startup_task_struct = kthread_create(startup_task,
+ (void *)device,
+ "AR6K startup");
+ if (startup_task_struct == NULL) {
+ AR_DEBUG_PRINTF(ATH_DEBUG_ERROR, ("AR6000: %s(), to create startup task\n", __FUNCTION__));
+ sdio_release_host(func);
+ return A_ERROR;
+ }
+ AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("AR6000: start startup task\n"));
+ wake_up_process(startup_task_struct);
+
+ AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("AR6000: return %d\n", ret));
+ return ret;
+}
+
+
+void
+HIFAckInterrupt(HIF_DEVICE *device)
+{
+ AR_DEBUG_ASSERT(device != NULL);
+
+ /* Acknowledge our function IRQ */
+}
+
+void
+HIFUnMaskInterrupt(HIF_DEVICE *device)
+{
+ int ret;;
+
+ AR_DEBUG_ASSERT(device != NULL);
+ AR_DEBUG_ASSERT(device->func != NULL);
+
+ AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("AR6000: HIFUnMaskInterrupt\n"));
+
+ /* Register the IRQ Handler */
+ sdio_claim_host(device->func);
+ ret = sdio_claim_irq(device->func, hifIRQHandler);
+ sdio_release_host(device->func);
+ AR_DEBUG_ASSERT(ret == 0);
+}
+
+void HIFMaskInterrupt(HIF_DEVICE *device)
+{
+ int ret;;
+
+ AR_DEBUG_ASSERT(device != NULL);
+ AR_DEBUG_ASSERT(device->func != NULL);
+
+ AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("AR6000: HIFMaskInterrupt\n"));
+
+ /* Mask our function IRQ */
+ sdio_claim_host(device->func);
+ ret = sdio_release_irq(device->func);
+ sdio_release_host(device->func);
+ AR_DEBUG_ASSERT(ret == 0);
+}
+
+static BUS_REQUEST *hifAllocateBusRequest(HIF_DEVICE *device)
+{
+ BUS_REQUEST *busrequest;
+ unsigned long flag;
+
+ /* Acquire lock */
+ spin_lock_irqsave(&device->lock, flag);
+
+ /* Remove first in list */
+ if((busrequest = device->s_busRequestFreeQueue) != NULL)
+ {
+ device->s_busRequestFreeQueue = busrequest->next;
+ }
+
+ /* Release lock */
+ spin_unlock_irqrestore(&device->lock, flag);
+ AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("AR6000: hifAllocateBusRequest: 0x%p\n", busrequest));
+ return busrequest;
+}
+
+static void
+hifFreeBusRequest(HIF_DEVICE *device, BUS_REQUEST *busrequest)
+{
+ unsigned long flag;
+
+ AR_DEBUG_ASSERT(busrequest != NULL);
+ AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("AR6000: hifFreeBusRequest: 0x%p\n", busrequest));
+ /* Acquire lock */
+ spin_lock_irqsave(&device->lock, flag);
+
+
+ /* Insert first in list */
+ busrequest->next = device->s_busRequestFreeQueue;
+ busrequest->inusenext = NULL;
+ device->s_busRequestFreeQueue = busrequest;
+
+ /* Release lock */
+ spin_unlock_irqrestore(&device->lock, flag);
+}
+
+static void hifDeviceRemoved(struct sdio_func *func)
+{
+ A_STATUS status = A_OK;
+ HIF_DEVICE *device;
+ int ret;
+ AR_DEBUG_ASSERT(func != NULL);
+
+ AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("AR6000: +hifDeviceRemoved\n"));
+ device = getHifDevice(func);
+ if (device->claimedContext != NULL) {
+ status = osdrvCallbacks.deviceRemovedHandler(device->claimedContext, device);
+ }
+
+ if (device->async_task != NULL) {
+ init_completion(&device->async_completion);
+ device->async_shutdown = 1;
+ up(&device->sem_async);
+ wait_for_completion(&device->async_completion);
+ device->async_task = NULL;
+ }
+ /* Disable the card */
+ sdio_claim_host(device->func);
+ ret = sdio_disable_func(device->func);
+
+ if (reset_sdio_on_unload) {
+ int ret;
+ /* reset the SDIO interface. This is useful in automated testing where the card
+ * does not need to be removed at the end of the test. It is expected that the user will
+ * also unload/reload the host controller driver to force the bus driver to re-enumerate the slot */
+ AR_DEBUG_PRINTF(ATH_DEBUG_WARN, ("AR6000: reseting SDIO card back to uninitialized state \n"));
+
+ /* NOTE : sdio_f0_writeb() cannot be used here, that API only allows access
+ * to undefined registers in the range of: 0xF0-0xFF */
+
+ ret = Func0_CMD52WriteByte(device->func->card, SDIO_CCCR_ABORT, (1 << 3));
+ if (ret) {
+ AR_DEBUG_PRINTF(ATH_DEBUG_ERR, ("AR6000: reset failed : %d \n",ret));
+ }
+ }
+
+ sdio_release_host(device->func);
+ delHifDevice(device);
+ AR_DEBUG_ASSERT(status == A_OK);
+ AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("AR6000: -hifDeviceRemoved\n"));
+}
+
+
+static HIF_DEVICE *
+addHifDevice(struct sdio_func *func)
+{
+ HIF_DEVICE *hifdevice;
+ AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("AR6000: addHifDevice\n"));
+ AR_DEBUG_ASSERT(func != NULL);
+ hifdevice = (HIF_DEVICE *)kzalloc(sizeof(HIF_DEVICE), GFP_KERNEL);
+ AR_DEBUG_ASSERT(hifdevice != NULL);
+#if HIF_USE_DMA_BOUNCE_BUFFER
+ hifdevice->dma_buffer = kmalloc(HIF_DMA_BUFFER_SIZE, GFP_KERNEL);
+ AR_DEBUG_ASSERT(hifdevice->dma_buffer != NULL);
+#endif
+ hifdevice->func = func;
+ sdio_set_drvdata(func, hifdevice);
+ AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("AR6000: addHifDevice; 0x%p\n", hifdevice));
+ return hifdevice;
+}
+
+static HIF_DEVICE *
+getHifDevice(struct sdio_func *func)
+{
+ AR_DEBUG_ASSERT(func != NULL);
+ return (HIF_DEVICE *)sdio_get_drvdata(func);
+}
+
+static void
+delHifDevice(HIF_DEVICE * device)
+{
+ AR_DEBUG_ASSERT(device!= NULL);
+ AR_DEBUG_PRINTF(ATH_DEBUG_TRACE, ("AR6000: delHifDevice; 0x%p\n", device));
+ if (device->dma_buffer != NULL) {
+ kfree(device->dma_buffer);
+ }
+ kfree(device);
+}
+
+static void ResetAllCards(void)
+{
+}
+
+void HIFClaimDevice(HIF_DEVICE *device, void *context)
+{
+ device->claimedContext = context;
+}
+
+void HIFReleaseDevice(HIF_DEVICE *device)
+{
+ device->claimedContext = NULL;
+}
+
+A_STATUS HIFAttachHTC(HIF_DEVICE *device, HTC_CALLBACKS *callbacks)
+{
+ if (device->htcCallbacks.context != NULL) {
+ /* already in use! */
+ return A_ERROR;
+ }
+ device->htcCallbacks = *callbacks;
+ return A_OK;
+}
+
+void HIFDetachHTC(HIF_DEVICE *device)
+{
+ A_MEMZERO(&device->htcCallbacks,sizeof(device->htcCallbacks));
+}
+
+#define SDIO_SET_CMD52_ARG(arg,rw,func,raw,address,writedata) \
+ (arg) = (((rw) & 1) << 31) | \
+ (((func) & 0x7) << 28) | \
+ (((raw) & 1) << 27) | \
+ (1 << 26) | \
+ (((address) & 0x1FFFF) << 9) | \
+ (1 << 8) | \
+ ((writedata) & 0xFF)
+
+#define SDIO_SET_CMD52_READ_ARG(arg,func,address) \
+ SDIO_SET_CMD52_ARG(arg,0,(func),0,address,0x00)
+#define SDIO_SET_CMD52_WRITE_ARG(arg,func,address,value) \
+ SDIO_SET_CMD52_ARG(arg,1,(func),0,address,value)
+
+static int Func0_CMD52WriteByte(struct mmc_card *card, unsigned int address, unsigned char byte)
+{
+ struct mmc_command ioCmd;
+ unsigned long arg;
+
+ memset(&ioCmd,0,sizeof(ioCmd));
+ SDIO_SET_CMD52_WRITE_ARG(arg,0,address,byte);
+ ioCmd.opcode = SD_IO_RW_DIRECT;
+ ioCmd.arg = arg;
+ ioCmd.flags = MMC_RSP_R5 | MMC_CMD_AC;
+
+ return mmc_wait_for_cmd(card->host, &ioCmd, 0);
+}
+
+
+
+
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