branch Attitude Adjustment

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

9 files changed, 4205 insertions, 0 deletions

diff --git a/target/linux/s3c24xx/files-2.6.30/drivers/ar6000/htc/ar6k.c b/target/linux/s3c24xx/files-2.6.30/drivers/ar6000/htc/ar6k.c
new file mode 100644
index 000000000..72472abb0
--- /dev/null
+++ b/target/linux/s3c24xx/files-2.6.30/drivers/ar6000/htc/ar6k.c
@@ -0,0 +1,991 @@
+/*
+ * AR6K device layer that handles register level I/O
+ *
+ * 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 "a_config.h"
+#include "athdefs.h"
+#include "a_types.h"
+#include "AR6Khwreg.h"
+#include "a_osapi.h"
+#include "a_debug.h"
+#include "hif.h"
+#include "htc_packet.h"
+#include "ar6k.h"
+
+#define MAILBOX_FOR_BLOCK_SIZE 1
+
+extern A_UINT32 resetok;
+
+static A_STATUS DevEnableInterrupts(AR6K_DEVICE *pDev);
+static A_STATUS DevDisableInterrupts(AR6K_DEVICE *pDev);
+
+#define LOCK_AR6K(p)      A_MUTEX_LOCK(&(p)->Lock);
+#define UNLOCK_AR6K(p)    A_MUTEX_UNLOCK(&(p)->Lock);
+
+void AR6KFreeIOPacket(AR6K_DEVICE *pDev, HTC_PACKET *pPacket)
+{
+    LOCK_AR6K(pDev);
+    HTC_PACKET_ENQUEUE(&pDev->RegisterIOList,pPacket);
+    UNLOCK_AR6K(pDev);
+}
+
+HTC_PACKET *AR6KAllocIOPacket(AR6K_DEVICE *pDev)
+{
+    HTC_PACKET *pPacket;
+
+    LOCK_AR6K(pDev);
+    pPacket = HTC_PACKET_DEQUEUE(&pDev->RegisterIOList);
+    UNLOCK_AR6K(pDev);
+
+    return pPacket;
+}
+
+A_STATUS DevSetup(AR6K_DEVICE *pDev)
+{
+    A_UINT32 mailboxaddrs[AR6K_MAILBOXES];
+    A_UINT32 blocksizes[AR6K_MAILBOXES];
+    A_STATUS status = A_OK;
+    int      i;
+
+    AR_DEBUG_ASSERT(AR6K_IRQ_PROC_REGS_SIZE == 16);
+    AR_DEBUG_ASSERT(AR6K_IRQ_ENABLE_REGS_SIZE == 4);
+
+    do {
+            /* give a handle to HIF for this target */
+        HIFSetHandle(pDev->HIFDevice, (void *)pDev);
+            /* initialize our free list of IO packets */
+        INIT_HTC_PACKET_QUEUE(&pDev->RegisterIOList);
+        A_MUTEX_INIT(&pDev->Lock);
+
+            /* get the addresses for all 4 mailboxes */
+        status = HIFConfigureDevice(pDev->HIFDevice, HIF_DEVICE_GET_MBOX_ADDR,
+                                    mailboxaddrs, sizeof(mailboxaddrs));
+
+        if (status != A_OK) {
+            AR_DEBUG_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 address of the mailbox we are using */
+        pDev->MailboxAddress = mailboxaddrs[HTC_MAILBOX];
+
+            /* get the block sizes */
+        status = HIFConfigureDevice(pDev->HIFDevice, HIF_DEVICE_GET_MBOX_BLOCK_SIZE,
+                                    blocksizes, sizeof(blocksizes));
+
+        if (status != A_OK) {
+            AR_DEBUG_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 */
+        AR_DEBUG_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->MailboxAddress));
+
+        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_TRC,("HIF Interrupt processing is SYNC ONLY\n"));
+                break;
+            case HIF_DEVICE_IRQ_ASYNC_SYNC:
+                AR_DEBUG_PRINTF(ATH_DEBUG_TRC,("HIF Interrupt processing is ASYNC and SYNC\n"));
+                break;
+            default:
+                AR_DEBUG_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%X , 0x%X\n",
+                 (A_UINT32)pDev->GetPendingEventsFunc, (A_UINT32)pDev->HifMaskUmaskRecvEvent));
+
+        status = DevDisableInterrupts(pDev);
+
+    } while (FALSE);
+
+    if (A_FAILED(status)) {
+            /* make sure handle is cleared */
+        HIFSetHandle(pDev->HIFDevice, NULL);
+    }
+
+    return status;
+
+}
+
+static A_STATUS DevEnableInterrupts(AR6K_DEVICE *pDev)
+{
+    A_STATUS                  status;
+    AR6K_IRQ_ENABLE_REGISTERS regs;
+
+    LOCK_AR6K(pDev);
+
+        /* Enable all the interrupts except for the dragon interrupt */
+    pDev->IrqEnableRegisters.int_status_enable = INT_STATUS_ENABLE_ERROR_SET(0x01) |
+                                      INT_STATUS_ENABLE_CPU_SET(0x01) |
+                                      INT_STATUS_ENABLE_COUNTER_SET(0x01);
+
+    if (NULL == pDev->GetPendingEventsFunc) {
+        pDev->IrqEnableRegisters.int_status_enable |= INT_STATUS_ENABLE_MBOX_DATA_SET(0x01);
+    } else {
+        /* The HIF layer provided us with a pending events function which means that
+         * the detection of pending mbox messages is handled in the HIF layer.
+         * This is the case for the SPI2 interface.
+         * In the normal case we enable MBOX interrupts, for the case
+         * with HIFs that offer this mechanism, we keep these interrupts
+         * masked */
+        pDev->IrqEnableRegisters.int_status_enable &= ~INT_STATUS_ENABLE_MBOX_DATA_SET(0x01);
+    }
+
+
+    /* Set up the CPU Interrupt Status Register */
+    pDev->IrqEnableRegisters.cpu_int_status_enable = CPU_INT_STATUS_ENABLE_BIT_SET(0x00);
+
+    /* Set up the Error Interrupt Status Register */
+    pDev->IrqEnableRegisters.error_status_enable =
+                                  ERROR_STATUS_ENABLE_RX_UNDERFLOW_SET(0x01) |
+                                  ERROR_STATUS_ENABLE_TX_OVERFLOW_SET(0x01);
+
+    /* Set up the Counter Interrupt Status Register (only for debug interrupt to catch fatal errors) */
+    pDev->IrqEnableRegisters.counter_int_status_enable =
+        COUNTER_INT_STATUS_ENABLE_BIT_SET(AR6K_TARGET_DEBUG_INTR_MASK);
+
+        /* copy into our temp area */
+    A_MEMCPY(&regs,&pDev->IrqEnableRegisters,AR6K_IRQ_ENABLE_REGS_SIZE);
+
+    UNLOCK_AR6K(pDev);
+
+        /* always synchronous */
+    status = HIFReadWrite(pDev->HIFDevice,
+                          INT_STATUS_ENABLE_ADDRESS,
+                          &regs.int_status_enable,
+                          AR6K_IRQ_ENABLE_REGS_SIZE,
+                          HIF_WR_SYNC_BYTE_INC,
+                          NULL);
+
+    if (status != A_OK) {
+        /* Can't write it for some reason */
+        AR_DEBUG_PRINTF(ATH_DEBUG_ERR,
+                        ("Failed to update interrupt control registers err: %d\n", status));
+
+    }
+
+    return status;
+}
+
+static A_STATUS DevDisableInterrupts(AR6K_DEVICE *pDev)
+{
+    AR6K_IRQ_ENABLE_REGISTERS regs;
+
+    LOCK_AR6K(pDev);
+        /* Disable all interrupts */
+    pDev->IrqEnableRegisters.int_status_enable = 0;
+    pDev->IrqEnableRegisters.cpu_int_status_enable = 0;
+    pDev->IrqEnableRegisters.error_status_enable = 0;
+    pDev->IrqEnableRegisters.counter_int_status_enable = 0;
+        /* copy into our temp area */
+    A_MEMCPY(&regs,&pDev->IrqEnableRegisters,AR6K_IRQ_ENABLE_REGS_SIZE);
+
+    UNLOCK_AR6K(pDev);
+
+        /* always synchronous */
+    return HIFReadWrite(pDev->HIFDevice,
+                        INT_STATUS_ENABLE_ADDRESS,
+                        &regs.int_status_enable,
+                        AR6K_IRQ_ENABLE_REGS_SIZE,
+                        HIF_WR_SYNC_BYTE_INC,
+                        NULL);
+}
+
+/* enable device interrupts */
+A_STATUS DevUnmaskInterrupts(AR6K_DEVICE *pDev)
+{
+        /* Unmask the host controller interrupts */
+    HIFUnMaskInterrupt(pDev->HIFDevice);
+
+    return DevEnableInterrupts(pDev);
+}
+
+/* disable all device interrupts */
+A_STATUS DevMaskInterrupts(AR6K_DEVICE *pDev)
+{
+    A_STATUS status;
+
+    status = DevDisableInterrupts(pDev);
+
+    if (A_SUCCESS(status)) {
+            /* Disable the interrupt at the HIF layer */
+        HIFMaskInterrupt(pDev->HIFDevice);
+    }
+
+    return status;
+}
+
+/* callback when our fetch to enable/disable completes */
+static void DevDoEnableDisableRecvAsyncHandler(void *Context, HTC_PACKET *pPacket)
+{
+    AR6K_DEVICE *pDev = (AR6K_DEVICE *)Context;
+
+    AR_DEBUG_PRINTF(ATH_DEBUG_IRQ,("+DevDoEnableDisableRecvAsyncHandler: (dev: 0x%X)\n", (A_UINT32)pDev));
+
+    if (A_FAILED(pPacket->Status)) {
+        AR_DEBUG_PRINTF(ATH_DEBUG_ERR,
+                (" Failed to disable receiver, status:%d \n", pPacket->Status));
+    }
+        /* free this IO packet */
+    AR6KFreeIOPacket(pDev,pPacket);
+    AR_DEBUG_PRINTF(ATH_DEBUG_IRQ,("-DevDoEnableDisableRecvAsyncHandler \n"));
+}
+
+/* disable packet reception (used in case the host runs out of buffers)
+ * this is the "override" method when the HIF reports another methods to
+ * disable recv events */
+static A_STATUS DevDoEnableDisableRecvOverride(AR6K_DEVICE *pDev, A_BOOL EnableRecv, A_BOOL AsyncMode)
+{
+    A_STATUS                  status = A_OK;
+    HTC_PACKET                *pIOPacket = NULL;
+
+    AR_DEBUG_PRINTF(ATH_DEBUG_TRC,("DevDoEnableDisableRecvOverride: Enable:%d Mode:%d\n",
+            EnableRecv,AsyncMode));
+
+    do {
+
+        if (AsyncMode) {
+
+            pIOPacket = AR6KAllocIOPacket(pDev);
+
+            if (NULL == pIOPacket) {
+                status = A_NO_MEMORY;
+                AR_DEBUG_ASSERT(FALSE);
+                break;
+            }
+
+                /* stick in our completion routine when the I/O operation completes */
+            pIOPacket->Completion = DevDoEnableDisableRecvAsyncHandler;
+            pIOPacket->pContext = pDev;
+
+                /* call the HIF layer override and do this asynchronously */
+            status = pDev->HifMaskUmaskRecvEvent(pDev->HIFDevice,
+                                                 EnableRecv ? HIF_UNMASK_RECV : HIF_MASK_RECV,
+                                                 pIOPacket);
+            break;
+        }
+
+            /* if we get here we are doing it synchronously */
+        status = pDev->HifMaskUmaskRecvEvent(pDev->HIFDevice,
+                                             EnableRecv ? HIF_UNMASK_RECV : HIF_MASK_RECV,
+                                             NULL);
+
+    } while (FALSE);
+
+    if (A_FAILED(status) && (pIOPacket != NULL)) {
+        AR6KFreeIOPacket(pDev,pIOPacket);
+    }
+
+    return status;
+}
+
+/* disable packet reception (used in case the host runs out of buffers)
+ * this is the "normal" method using the interrupt enable registers through
+ * the host I/F */
+static A_STATUS DevDoEnableDisableRecvNormal(AR6K_DEVICE *pDev, A_BOOL EnableRecv, A_BOOL AsyncMode)
+{
+    A_STATUS                  status = A_OK;
+    HTC_PACKET                *pIOPacket = NULL;
+    AR6K_IRQ_ENABLE_REGISTERS regs;
+
+        /* take the lock to protect interrupt enable shadows */
+    LOCK_AR6K(pDev);
+
+    if (EnableRecv) {
+        pDev->IrqEnableRegisters.int_status_enable |= INT_STATUS_ENABLE_MBOX_DATA_SET(0x01);
+    } else {
+        pDev->IrqEnableRegisters.int_status_enable &= ~INT_STATUS_ENABLE_MBOX_DATA_SET(0x01);
+    }
+
+        /* copy into our temp area */
+    A_MEMCPY(&regs,&pDev->IrqEnableRegisters,AR6K_IRQ_ENABLE_REGS_SIZE);
+    UNLOCK_AR6K(pDev);
+
+    do {
+
+        if (AsyncMode) {
+
+            pIOPacket = AR6KAllocIOPacket(pDev);
+
+            if (NULL == pIOPacket) {
+                status = A_NO_MEMORY;
+                AR_DEBUG_ASSERT(FALSE);
+                break;
+            }
+
+                /* copy values to write to our async I/O buffer */
+            A_MEMCPY(pIOPacket->pBuffer,&regs,AR6K_IRQ_ENABLE_REGS_SIZE);
+
+                /* stick in our completion routine when the I/O operation completes */
+            pIOPacket->Completion = DevDoEnableDisableRecvAsyncHandler;
+            pIOPacket->pContext = pDev;
+
+                /* write it out asynchronously */
+            HIFReadWrite(pDev->HIFDevice,
+                         INT_STATUS_ENABLE_ADDRESS,
+                         pIOPacket->pBuffer,
+                         AR6K_IRQ_ENABLE_REGS_SIZE,
+                         HIF_WR_ASYNC_BYTE_INC,
+                         pIOPacket);
+            break;
+        }
+
+        /* if we get here we are doing it synchronously */
+
+        status = HIFReadWrite(pDev->HIFDevice,
+                              INT_STATUS_ENABLE_ADDRESS,
+                              &regs.int_status_enable,
+                              AR6K_IRQ_ENABLE_REGS_SIZE,
+                              HIF_WR_SYNC_BYTE_INC,
+                              NULL);
+
+    } while (FALSE);
+
+    if (A_FAILED(status) && (pIOPacket != NULL)) {
+        AR6KFreeIOPacket(pDev,pIOPacket);
+    }
+
+    return status;
+}
+
+
+A_STATUS DevStopRecv(AR6K_DEVICE *pDev, A_BOOL AsyncMode)
+{
+    if (NULL == pDev->HifMaskUmaskRecvEvent) {
+        return DevDoEnableDisableRecvNormal(pDev,FALSE,AsyncMode);
+    } else {
+        return DevDoEnableDisableRecvOverride(pDev,FALSE,AsyncMode);
+    }
+}
+
+A_STATUS DevEnableRecv(AR6K_DEVICE *pDev, A_BOOL AsyncMode)
+{
+    if (NULL == pDev->HifMaskUmaskRecvEvent) {
+        return DevDoEnableDisableRecvNormal(pDev,TRUE,AsyncMode);
+    } else {
+        return DevDoEnableDisableRecvOverride(pDev,TRUE,AsyncMode);
+    }
+}
+
+void DevDumpRegisters(AR6K_IRQ_PROC_REGISTERS   *pIrqProcRegs,
+                      AR6K_IRQ_ENABLE_REGISTERS *pIrqEnableRegs)
+{
+
+    AR_DEBUG_PRINTF(ATH_DEBUG_DUMP, ("\n<------- Register Table -------->\n"));
+
+    if (pIrqProcRegs != NULL) {
+        AR_DEBUG_PRINTF(ATH_DEBUG_DUMP,
+            ("Int Status:               0x%x\n",pIrqProcRegs->host_int_status));
+        AR_DEBUG_PRINTF(ATH_DEBUG_DUMP,
+            ("CPU Int Status:            0x%x\n",pIrqProcRegs->cpu_int_status));
+        AR_DEBUG_PRINTF(ATH_DEBUG_DUMP,
+            ("Error Int Status:          0x%x\n",pIrqProcRegs->error_int_status));
+        AR_DEBUG_PRINTF(ATH_DEBUG_DUMP,
+            ("Counter Int Status:        0x%x\n",pIrqProcRegs->counter_int_status));
+        AR_DEBUG_PRINTF(ATH_DEBUG_DUMP,
+            ("Mbox Frame:                0x%x\n",pIrqProcRegs->mbox_frame));
+        AR_DEBUG_PRINTF(ATH_DEBUG_DUMP,
+            ("Rx Lookahead Valid:        0x%x\n",pIrqProcRegs->rx_lookahead_valid));
+        AR_DEBUG_PRINTF(ATH_DEBUG_DUMP,
+            ("Rx Lookahead 0:            0x%x\n",pIrqProcRegs->rx_lookahead[0]));
+        AR_DEBUG_PRINTF(ATH_DEBUG_DUMP,
+            ("Rx Lookahead 1:            0x%x\n",pIrqProcRegs->rx_lookahead[1]));
+    }
+
+    if (pIrqEnableRegs != NULL) {
+        AR_DEBUG_PRINTF(ATH_DEBUG_DUMP,
+            ("Int Status Enable:         0x%x\n",pIrqEnableRegs->int_status_enable));
+        AR_DEBUG_PRINTF(ATH_DEBUG_DUMP,
+            ("Counter Int Status Enable: 0x%x\n",pIrqEnableRegs->counter_int_status_enable));
+        AR_DEBUG_PRINTF(ATH_DEBUG_DUMP, ("<------------------------------->\n"));
+    }
+}
+
+
+#ifdef MBOXHW_UNIT_TEST
+
+
+/* This is a mailbox hardware unit test that must be called in a schedulable context
+ * This test is very simple, it will send a list of buffers with a counting pattern
+ * and the target will invert the data and send the message back
+ *
+ * the unit test has the following constraints:
+ *
+ * The target has at least 8 buffers of 256 bytes each. The host will send
+ * the following pattern of buffers in rapid succession :
+ *
+ * 1 buffer - 128 bytes
+ * 1 buffer - 256 bytes
+ * 1 buffer - 512 bytes
+ * 1 buffer - 1024 bytes
+ *
+ * The host will send the buffers to one mailbox and wait for buffers to be reflected
+ * back from the same mailbox. The target sends the buffers FIFO order.
+ * Once the final buffer has been received for a mailbox, the next mailbox is tested.
+ *
+ *
+ * Note:  To simplifythe test , we assume that the chosen buffer sizes
+ *        will fall on a nice block pad
+ *
+ * It is expected that higher-order tests will be written to stress the mailboxes using
+ * a message-based protocol (with some performance timming) that can create more
+ * randomness in the packets sent over mailboxes.
+ *
+ * */
+
+#define A_ROUND_UP_PWR2(x, align)    (((int) (x) + ((align)-1)) & ~((align)-1))
+
+#define BUFFER_BLOCK_PAD 128
+
+#if 0
+#define BUFFER1 128
+#define BUFFER2 256
+#define BUFFER3 512
+#define BUFFER4 1024
+#endif
+
+#if 1
+#define BUFFER1 80
+#define BUFFER2 200
+#define BUFFER3 444
+#define BUFFER4 800
+#endif
+
+#define TOTAL_BYTES (A_ROUND_UP_PWR2(BUFFER1,BUFFER_BLOCK_PAD) + \
+                     A_ROUND_UP_PWR2(BUFFER2,BUFFER_BLOCK_PAD) + \
+                     A_ROUND_UP_PWR2(BUFFER3,BUFFER_BLOCK_PAD) + \
+                     A_ROUND_UP_PWR2(BUFFER4,BUFFER_BLOCK_PAD) )
+
+#define TEST_BYTES (BUFFER1 +  BUFFER2 + BUFFER3 + BUFFER4)
+
+#define TEST_CREDITS_RECV_TIMEOUT 100
+
+static A_UINT8  g_Buffer[TOTAL_BYTES];
+static A_UINT32 g_MailboxAddrs[AR6K_MAILBOXES];
+static A_UINT32 g_BlockSizes[AR6K_MAILBOXES];
+
+#define BUFFER_PROC_LIST_DEPTH 4
+
+typedef struct _BUFFER_PROC_LIST{
+    A_UINT8  *pBuffer;
+    A_UINT32 length;
+}BUFFER_PROC_LIST;
+
+
+#define PUSH_BUFF_PROC_ENTRY(pList,len,pCurrpos) \
+{                                                   \
+    (pList)->pBuffer = (pCurrpos);                  \
+    (pList)->length = (len);                        \
+    (pCurrpos) += (len);                            \
+    (pList)++;                                      \
+}
+
+/* a simple and crude way to send different "message" sizes */
+static void AssembleBufferList(BUFFER_PROC_LIST *pList)
+{
+    A_UINT8 *pBuffer = g_Buffer;
+
+#if BUFFER_PROC_LIST_DEPTH < 4
+#error "Buffer processing list depth is not deep enough!!"
+#endif
+
+    PUSH_BUFF_PROC_ENTRY(pList,BUFFER1,pBuffer);
+    PUSH_BUFF_PROC_ENTRY(pList,BUFFER2,pBuffer);
+    PUSH_BUFF_PROC_ENTRY(pList,BUFFER3,pBuffer);
+    PUSH_BUFF_PROC_ENTRY(pList,BUFFER4,pBuffer);
+
+}
+
+#define FILL_ZERO     TRUE
+#define FILL_COUNTING FALSE
+static void InitBuffers(A_BOOL Zero)
+{
+    A_UINT16 *pBuffer16 = (A_UINT16 *)g_Buffer;
+    int      i;
+
+        /* fill buffer with 16 bit counting pattern or zeros */
+    for (i = 0; i <  (TOTAL_BYTES / 2) ; i++) {
+        if (!Zero) {
+            pBuffer16[i] = (A_UINT16)i;
+        } else {
+            pBuffer16[i] = 0;
+        }
+    }
+}
+
+
+static A_BOOL CheckOneBuffer(A_UINT16 *pBuffer16, int Length)
+{
+    int      i;
+    A_UINT16 startCount;
+    A_BOOL   success = TRUE;
+
+        /* get the starting count */
+    startCount = pBuffer16[0];
+        /* invert it, this is the expected value */
+    startCount = ~startCount;
+        /* scan the buffer and verify */
+    for (i = 0; i < (Length / 2) ; i++,startCount++) {
+            /* target will invert all the data */
+        if ((A_UINT16)pBuffer16[i] != (A_UINT16)~startCount) {
+            success = FALSE;
+            AR_DEBUG_PRINTF(ATH_DEBUG_ERR, ("Invalid Data Got:0x%X, Expecting:0x%X (offset:%d, total:%d) \n",
+                        pBuffer16[i], ((A_UINT16)~startCount), i, Length));
+             AR_DEBUG_PRINTF(ATH_DEBUG_ERR, ("0x%X 0x%X 0x%X 0x%X \n",
+                        pBuffer16[i], pBuffer16[i + 1], pBuffer16[i + 2],pBuffer16[i+3]));
+            break;
+        }
+    }
+
+    return success;
+}
+
+static A_BOOL CheckBuffers(void)
+{
+    int      i;
+    A_BOOL   success = TRUE;
+    BUFFER_PROC_LIST checkList[BUFFER_PROC_LIST_DEPTH];
+
+        /* assemble the list */
+    AssembleBufferList(checkList);
+
+        /* scan the buffers and verify */
+    for (i = 0; i < BUFFER_PROC_LIST_DEPTH ; i++) {
+        success = CheckOneBuffer((A_UINT16 *)checkList[i].pBuffer, checkList[i].length);
+        if (!success) {
+            AR_DEBUG_PRINTF(ATH_DEBUG_ERR, ("Buffer : 0x%X, Length:%d failed verify \n",
+                        (A_UINT32)checkList[i].pBuffer, checkList[i].length));
+            break;
+        }
+    }
+
+    return success;
+}
+
+    /* find the end marker for the last buffer we will be sending */
+static A_UINT16 GetEndMarker(void)
+{
+    A_UINT8  *pBuffer;
+    BUFFER_PROC_LIST checkList[BUFFER_PROC_LIST_DEPTH];
+
+        /* fill up buffers with the normal counting pattern */
+    InitBuffers(FILL_COUNTING);
+
+        /* assemble the list we will be sending down */
+    AssembleBufferList(checkList);
+        /* point to the last 2 bytes of the last buffer */
+    pBuffer = &(checkList[BUFFER_PROC_LIST_DEPTH - 1].pBuffer[(checkList[BUFFER_PROC_LIST_DEPTH - 1].length) - 2]);
+
+        /* the last count in the last buffer is the marker */
+    return (A_UINT16)pBuffer[0] | ((A_UINT16)pBuffer[1] << 8);
+}
+
+#define ATH_PRINT_OUT_ZONE ATH_DEBUG_ERR
+
+/* send the ordered buffers to the target */
+static A_STATUS SendBuffers(AR6K_DEVICE *pDev, int mbox)
+{
+    A_STATUS         status = A_OK;
+    A_UINT32         request = HIF_WR_SYNC_BLOCK_INC;
+    BUFFER_PROC_LIST sendList[BUFFER_PROC_LIST_DEPTH];
+    int              i;
+    int              totalBytes = 0;
+    int              paddedLength;
+    int              totalwPadding = 0;
+
+    AR_DEBUG_PRINTF(ATH_PRINT_OUT_ZONE, ("Sending buffers on mailbox : %d \n",mbox));
+
+        /* fill buffer with counting pattern */
+    InitBuffers(FILL_COUNTING);
+
+        /* assemble the order in which we send */
+    AssembleBufferList(sendList);
+
+    for (i = 0; i < BUFFER_PROC_LIST_DEPTH; i++) {
+
+            /* we are doing block transfers, so we need to pad everything to a block size */
+        paddedLength = (sendList[i].length + (g_BlockSizes[mbox] - 1)) &
+                       (~(g_BlockSizes[mbox] - 1));
+
+            /* send each buffer synchronously */
+        status = HIFReadWrite(pDev->HIFDevice,
+                              g_MailboxAddrs[mbox],
+                              sendList[i].pBuffer,
+                              paddedLength,
+                              request,
+                              NULL);
+        if (status != A_OK) {
+            break;
+        }
+        totalBytes += sendList[i].length;
+        totalwPadding += paddedLength;
+    }
+
+    AR_DEBUG_PRINTF(ATH_PRINT_OUT_ZONE, ("Sent %d bytes (%d padded bytes) to mailbox : %d \n",totalBytes,totalwPadding,mbox));
+
+    return status;
+}
+
+/* poll the mailbox credit counter until we get a credit or timeout */
+static A_STATUS GetCredits(AR6K_DEVICE *pDev, int mbox, int *pCredits)
+{
+    A_STATUS status = A_OK;
+    int      timeout = TEST_CREDITS_RECV_TIMEOUT;
+    A_UINT8  credits = 0;
+    A_UINT32 address;
+
+    while (TRUE) {
+
+            /* Read the counter register to get credits, this auto-decrements  */
+        address = COUNT_DEC_ADDRESS + (AR6K_MAILBOXES + mbox) * 4;
+        status = HIFReadWrite(pDev->HIFDevice, address, &credits, sizeof(credits),
+                              HIF_RD_SYNC_BYTE_FIX, NULL);
+        if (status != A_OK) {
+            AR_DEBUG_PRINTF(ATH_DEBUG_ERR,
+                ("Unable to decrement the command credit count register (mbox=%d)\n",mbox));
+            status = A_ERROR;
+            break;
+        }
+
+        if (credits) {
+            break;
+        }
+
+        timeout--;
+
+        if (timeout <= 0) {
+              AR_DEBUG_PRINTF(ATH_DEBUG_ERR,
+                (" Timeout reading credit registers (mbox=%d, address:0x%X) \n",mbox,address));
+            status = A_ERROR;
+            break;
+        }
+
+         /* delay a little, target may not be ready */
+         msleep(1000);
+
+    }
+
+    if (status == A_OK) {
+        *pCredits = credits;
+    }
+
+    return status;
+}
+
+
+/* wait for the buffers to come back */
+static A_STATUS RecvBuffers(AR6K_DEVICE *pDev, int mbox)
+{
+    A_STATUS         status = A_OK;
+    A_UINT32         request = HIF_RD_SYNC_BLOCK_INC;
+    BUFFER_PROC_LIST recvList[BUFFER_PROC_LIST_DEPTH];
+    int              curBuffer;
+    int              credits;
+    int              i;
+    int              totalBytes = 0;
+    int              paddedLength;
+    int              totalwPadding = 0;
+
+    AR_DEBUG_PRINTF(ATH_PRINT_OUT_ZONE, ("Waiting for buffers on mailbox : %d \n",mbox));
+
+        /* zero the buffers */
+    InitBuffers(FILL_ZERO);
+
+        /* assemble the order in which we should receive */
+    AssembleBufferList(recvList);
+
+    curBuffer = 0;
+
+    while (curBuffer < BUFFER_PROC_LIST_DEPTH) {
+
+            /* get number of buffers that have been completed, this blocks
+             * until we get at least 1 credit or it times out */
+        status = GetCredits(pDev, mbox, &credits);
+
+        if (status != A_OK) {
+            break;
+        }
+
+        AR_DEBUG_PRINTF(ATH_PRINT_OUT_ZONE, ("Got %d messages on mailbox : %d \n",credits, mbox));
+
+            /* get all the buffers that are sitting on the queue */
+        for (i = 0; i < credits; i++) {
+            AR_DEBUG_ASSERT(curBuffer < BUFFER_PROC_LIST_DEPTH);
+                /* recv the current buffer synchronously, the buffers should come back in
+                 * order... with padding applied by the target */
+            paddedLength = (recvList[curBuffer].length + (g_BlockSizes[mbox] - 1)) &
+                       (~(g_BlockSizes[mbox] - 1));
+
+            status = HIFReadWrite(pDev->HIFDevice,
+                                  g_MailboxAddrs[mbox],
+                                  recvList[curBuffer].pBuffer,
+                                  paddedLength,
+                                  request,
+                                  NULL);
+            if (status != A_OK) {
+                AR_DEBUG_PRINTF(ATH_DEBUG_ERR, ("Failed to read %d bytes on mailbox:%d : address:0x%X \n",
+                        recvList[curBuffer].length, mbox, g_MailboxAddrs[mbox]));
+                break;
+            }
+
+            totalwPadding += paddedLength;
+            totalBytes += recvList[curBuffer].length;
+            curBuffer++;
+        }
+
+        if (status != A_OK) {
+            break;
+        }
+            /* go back and get some more */
+        credits = 0;
+    }
+
+    if (totalBytes != TEST_BYTES) {
+        AR_DEBUG_ASSERT(FALSE);
+    }  else {
+        AR_DEBUG_PRINTF(ATH_PRINT_OUT_ZONE, ("Got all buffers on mbox:%d total recv :%d (w/Padding : %d) \n",
+            mbox, totalBytes, totalwPadding));
+    }
+
+    return status;
+
+
+}
+
+static A_STATUS DoOneMboxHWTest(AR6K_DEVICE *pDev, int mbox)
+{
+    A_STATUS status;
+
+    do {
+            /* send out buffers */
+        status = SendBuffers(pDev,mbox);
+
+        if (status != A_OK) {
+            AR_DEBUG_PRINTF(ATH_DEBUG_ERR, ("Sending buffers Failed : %d mbox:%d\n",status,mbox));
+            break;
+        }
+
+            /* go get them, this will block */
+        status =  RecvBuffers(pDev, mbox);
+
+        if (status != A_OK) {
+            AR_DEBUG_PRINTF(ATH_DEBUG_ERR, ("Recv buffers Failed : %d mbox:%d\n",status,mbox));
+            break;
+        }
+
+            /* check the returned data patterns */
+        if (!CheckBuffers()) {
+            AR_DEBUG_PRINTF(ATH_DEBUG_ERR, ("Buffer Verify Failed : mbox:%d\n",mbox));
+            status = A_ERROR;
+            break;
+        }
+
+        AR_DEBUG_PRINTF(ATH_PRINT_OUT_ZONE, (" Send/Recv success! mailbox : %d \n",mbox));
+
+    }  while (FALSE);
+
+    return status;
+}
+
+/* here is where the test starts */
+A_STATUS DoMboxHWTest(AR6K_DEVICE *pDev)
+{
+    int      i;
+    A_STATUS status;
+    int      credits = 0;
+    A_UINT8  params[4];
+    int      numBufs;
+    int      bufferSize;
+    A_UINT16 temp;
+
+
+    AR_DEBUG_PRINTF(ATH_PRINT_OUT_ZONE, (" DoMboxHWTest START -  \n"));
+
+    do {
+            /* get the addresses for all 4 mailboxes */
+        status = HIFConfigureDevice(pDev->HIFDevice, HIF_DEVICE_GET_MBOX_ADDR,
+                                    g_MailboxAddrs, sizeof(g_MailboxAddrs));
+
+        if (status != A_OK) {
+            AR_DEBUG_ASSERT(FALSE);
+            break;
+        }
+
+            /* get the block sizes */
+        status = HIFConfigureDevice(pDev->HIFDevice, HIF_DEVICE_GET_MBOX_BLOCK_SIZE,
+                                    g_BlockSizes, sizeof(g_BlockSizes));
+
+        if (status != A_OK) {
+            AR_DEBUG_ASSERT(FALSE);
+            break;
+        }
+
+            /* note, the HIF layer usually reports mbox 0 to have a block size of
+             * 1, but our test wants to run in block-mode for all mailboxes, so we treat all mailboxes
+             * the same. */
+        g_BlockSizes[0] = g_BlockSizes[1];
+        AR_DEBUG_PRINTF(ATH_PRINT_OUT_ZONE, ("Block Size to use: %d \n",g_BlockSizes[0]));
+
+        if (g_BlockSizes[1] > BUFFER_BLOCK_PAD) {
+            AR_DEBUG_PRINTF(ATH_PRINT_OUT_ZONE, ("%d Block size is too large for buffer pad %d\n",
+                g_BlockSizes[1], BUFFER_BLOCK_PAD));
+            break;
+        }
+
+        AR_DEBUG_PRINTF(ATH_PRINT_OUT_ZONE, ("Waiting for target.... \n"));
+
+            /* the target lets us know it is ready by giving us 1 credit on
+             * mailbox 0 */
+        status = GetCredits(pDev, 0, &credits);
+
+        if (status != A_OK) {
+            AR_DEBUG_PRINTF(ATH_DEBUG_ERR, ("Failed to wait for target ready \n"));
+            break;
+        }
+
+        AR_DEBUG_PRINTF(ATH_PRINT_OUT_ZONE, ("Target is ready ...\n"));
+
+            /* read the first 4 scratch registers */
+        status = HIFReadWrite(pDev->HIFDevice,
+                              SCRATCH_ADDRESS,
+                              params,
+                              4,
+                              HIF_RD_SYNC_BYTE_INC,
+                              NULL);
+
+        if (status != A_OK) {
+            AR_DEBUG_PRINTF(ATH_DEBUG_ERR, ("Failed to wait get parameters \n"));
+            break;
+        }
+
+        numBufs = params[0];
+        bufferSize = (int)(((A_UINT16)params[2] << 8) | (A_UINT16)params[1]);
+
+        AR_DEBUG_PRINTF(ATH_PRINT_OUT_ZONE,
+            ("Target parameters: bufs per mailbox:%d, buffer size:%d bytes (total space: %d, minimum required space (w/padding): %d) \n",
+            numBufs, bufferSize, (numBufs * bufferSize), TOTAL_BYTES));
+
+        if ((numBufs * bufferSize) < TOTAL_BYTES) {
+            AR_DEBUG_PRINTF(ATH_DEBUG_ERR, ("Not Enough buffer space to run test! need:%d, got:%d \n",
+                TOTAL_BYTES, (numBufs*bufferSize)));
+            status = A_ERROR;
+            break;
+        }
+
+        temp = GetEndMarker();
+
+        status = HIFReadWrite(pDev->HIFDevice,
+                              SCRATCH_ADDRESS + 4,
+                              (A_UINT8 *)&temp,
+                              2,
+                              HIF_WR_SYNC_BYTE_INC,
+                              NULL);
+
+        if (status != A_OK) {
+            AR_DEBUG_PRINTF(ATH_DEBUG_ERR, ("Failed to write end marker \n"));
+            break;
+        }
+
+        AR_DEBUG_PRINTF(ATH_PRINT_OUT_ZONE, ("End Marker: 0x%X \n",temp));
+
+        temp = (A_UINT16)g_BlockSizes[1];
+            /* convert to a mask */
+        temp = temp - 1;
+        status = HIFReadWrite(pDev->HIFDevice,
+                              SCRATCH_ADDRESS + 6,
+                              (A_UINT8 *)&temp,
+                              2,
+                              HIF_WR_SYNC_BYTE_INC,
+                              NULL);
+
+        if (status != A_OK) {
+            AR_DEBUG_PRINTF(ATH_DEBUG_ERR, ("Failed to write block mask \n"));
+            break;
+        }
+
+        AR_DEBUG_PRINTF(ATH_PRINT_OUT_ZONE, ("Set Block Mask: 0x%X \n",temp));
+
+            /* execute the test on each mailbox */
+        for (i = 0; i < AR6K_MAILBOXES; i++) {
+            status = DoOneMboxHWTest(pDev, i);
+            if (status != A_OK) {
+                break;
+            }
+        }
+
+    } while (FALSE);
+
+    if (status == A_OK) {
+        AR_DEBUG_PRINTF(ATH_PRINT_OUT_ZONE, (" DoMboxHWTest DONE - SUCCESS! -  \n"));
+    } else {
+        AR_DEBUG_PRINTF(ATH_PRINT_OUT_ZONE, (" DoMboxHWTest DONE - FAILED! -  \n"));
+    }
+        /* don't let HTC_Start continue, the target is actually not running any HTC code */
+    return A_ERROR;
+}
+#endif
+
+
+
diff --git a/target/linux/s3c24xx/files-2.6.30/drivers/ar6000/htc/ar6k.h b/target/linux/s3c24xx/files-2.6.30/drivers/ar6000/htc/ar6k.h
new file mode 100644
index 000000000..301ab34a3
--- /dev/null
+++ b/target/linux/s3c24xx/files-2.6.30/drivers/ar6000/htc/ar6k.h
@@ -0,0 +1,191 @@
+/*
+ *
+ * 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.
+ *
+ *
+ *
+ */
+
+#ifndef AR6K_H_
+#define AR6K_H_
+
+#define AR6K_MAILBOXES 4
+
+/* HTC runs over mailbox 0 */
+#define HTC_MAILBOX          0
+
+#define AR6K_TARGET_DEBUG_INTR_MASK     0x01
+
+#define OTHER_INTS_ENABLED (INT_STATUS_ENABLE_ERROR_MASK |   \
+                            INT_STATUS_ENABLE_CPU_MASK   |   \
+                            INT_STATUS_ENABLE_COUNTER_MASK)
+
+//#define MBOXHW_UNIT_TEST 1
+
+#include "athstartpack.h"
+typedef PREPACK struct _AR6K_IRQ_PROC_REGISTERS {
+    A_UINT8                      host_int_status;
+    A_UINT8                      cpu_int_status;
+    A_UINT8                      error_int_status;
+    A_UINT8                      counter_int_status;
+    A_UINT8                      mbox_frame;
+    A_UINT8                      rx_lookahead_valid;
+    A_UINT8                      hole[2];
+    A_UINT32                     rx_lookahead[2];
+} POSTPACK AR6K_IRQ_PROC_REGISTERS;
+
+#define AR6K_IRQ_PROC_REGS_SIZE sizeof(AR6K_IRQ_PROC_REGISTERS)
+
+
+
+typedef PREPACK struct _AR6K_IRQ_ENABLE_REGISTERS {
+    A_UINT8                      int_status_enable;
+    A_UINT8                      cpu_int_status_enable;
+    A_UINT8                      error_status_enable;
+    A_UINT8                      counter_int_status_enable;
+} POSTPACK AR6K_IRQ_ENABLE_REGISTERS;
+
+#include "athendpack.h"
+
+#define AR6K_IRQ_ENABLE_REGS_SIZE sizeof(AR6K_IRQ_ENABLE_REGISTERS)
+
+#define AR6K_REG_IO_BUFFER_SIZE     32
+#define AR6K_MAX_REG_IO_BUFFERS     8
+
+/* buffers for ASYNC I/O */
+typedef struct AR6K_ASYNC_REG_IO_BUFFER {
+    HTC_PACKET    HtcPacket;   /* we use an HTC packet as a wrapper for our async register-based I/O */
+    A_UINT8       Buffer[AR6K_REG_IO_BUFFER_SIZE];
+} AR6K_ASYNC_REG_IO_BUFFER;
+
+typedef struct _AR6K_DEVICE {
+    A_MUTEX_T                   Lock;
+    AR6K_IRQ_PROC_REGISTERS     IrqProcRegisters;
+    AR6K_IRQ_ENABLE_REGISTERS   IrqEnableRegisters;
+    void                        *HIFDevice;
+    A_UINT32                    BlockSize;
+    A_UINT32                    BlockMask;
+    A_UINT32                    MailboxAddress;
+    HIF_PENDING_EVENTS_FUNC     GetPendingEventsFunc;
+    void                        *HTCContext;
+    HTC_PACKET_QUEUE            RegisterIOList;
+    AR6K_ASYNC_REG_IO_BUFFER    RegIOBuffers[AR6K_MAX_REG_IO_BUFFERS];
+    void                        (*TargetFailureCallback)(void *Context);
+    A_STATUS                    (*MessagePendingCallback)(void *Context, A_UINT32 LookAhead, A_BOOL *pAsyncProc);
+    HIF_DEVICE_IRQ_PROCESSING_MODE  HifIRQProcessingMode;
+    HIF_MASK_UNMASK_RECV_EVENT      HifMaskUmaskRecvEvent;
+} AR6K_DEVICE;
+
+#define IS_DEV_IRQ_PROCESSING_ASYNC_ALLOWED(pDev) ((pDev)->HifIRQProcessingMode != HIF_DEVICE_IRQ_SYNC_ONLY)
+
+A_STATUS DevSetup(AR6K_DEVICE *pDev);
+A_STATUS DevUnmaskInterrupts(AR6K_DEVICE *pDev);
+A_STATUS DevMaskInterrupts(AR6K_DEVICE *pDev);
+A_STATUS DevPollMboxMsgRecv(AR6K_DEVICE *pDev,
+                            A_UINT32    *pLookAhead,
+                            int          TimeoutMS);
+A_STATUS DevRWCompletionHandler(void *context, A_STATUS status);
+A_STATUS DevDsrHandler(void *context);
+A_STATUS DevCheckPendingRecvMsgsAsync(void *context);
+void     DevDumpRegisters(AR6K_IRQ_PROC_REGISTERS   *pIrqProcRegs,
+                          AR6K_IRQ_ENABLE_REGISTERS *pIrqEnableRegs);
+
+#define DEV_STOP_RECV_ASYNC TRUE
+#define DEV_STOP_RECV_SYNC  FALSE
+#define DEV_ENABLE_RECV_ASYNC TRUE
+#define DEV_ENABLE_RECV_SYNC  FALSE
+A_STATUS DevStopRecv(AR6K_DEVICE *pDev, A_BOOL ASyncMode);
+A_STATUS DevEnableRecv(AR6K_DEVICE *pDev, A_BOOL ASyncMode);
+
+static INLINE A_STATUS DevSendPacket(AR6K_DEVICE *pDev, HTC_PACKET *pPacket, A_UINT32 SendLength) {
+    A_UINT32 paddedLength;
+    A_BOOL   sync = (pPacket->Completion == NULL) ? TRUE : FALSE;
+    A_STATUS status;
+
+       /* adjust the length to be a multiple of block size if appropriate */
+    paddedLength = (SendLength + (pDev->BlockMask)) &
+                    (~(pDev->BlockMask));
+#if 0 // BufferLength may not be set in , fix this...
+    if (paddedLength > pPacket->BufferLength) {
+        AR_DEBUG_ASSERT(FALSE);
+        if (pPacket->Completion != NULL) {
+            COMPLETE_HTC_PACKET(pPacket,A_EINVAL);
+        }
+        return A_EINVAL;
+    }
+#endif
+    AR_DEBUG_PRINTF(ATH_DEBUG_SEND,
+                ("DevSendPacket, Padded Length: %d Mbox:0x%X (mode:%s)\n",
+                paddedLength,
+                pDev->MailboxAddress,
+                sync ? "SYNC" : "ASYNC"));
+
+    status = HIFReadWrite(pDev->HIFDevice,
+                          pDev->MailboxAddress,
+                          pPacket->pBuffer,
+                          paddedLength,     /* the padded length */
+                          sync ? HIF_WR_SYNC_BLOCK_INC : HIF_WR_ASYNC_BLOCK_INC,
+                          sync ? NULL : pPacket);  /* pass the packet as the context to the HIF request */
+
+    if (sync) {
+        pPacket->Status = status;
+    }
+
+    return status;
+}
+
+static INLINE A_STATUS DevRecvPacket(AR6K_DEVICE *pDev, HTC_PACKET *pPacket, A_UINT32 RecvLength) {
+    A_UINT32 paddedLength;
+    A_STATUS status;
+    A_BOOL   sync = (pPacket->Completion == NULL) ? TRUE : FALSE;
+
+        /* adjust the length to be a multiple of block size if appropriate */
+    paddedLength = (RecvLength + (pDev->BlockMask)) &
+                    (~(pDev->BlockMask));
+    if (paddedLength > pPacket->BufferLength) {
+        AR_DEBUG_ASSERT(FALSE);
+        AR_DEBUG_PRINTF(ATH_DEBUG_ERR,
+                ("DevRecvPacket, Not enough space for padlen:%d recvlen:%d bufferlen:%d \n",
+                    paddedLength,RecvLength,pPacket->BufferLength));
+        if (pPacket->Completion != NULL) {
+            COMPLETE_HTC_PACKET(pPacket,A_EINVAL);
+        }
+        return A_EINVAL;
+    }
+
+    AR_DEBUG_PRINTF(ATH_DEBUG_RECV,
+                ("DevRecvPacket, Padded Length: %d Mbox:0x%X (mode:%s)\n",
+                paddedLength,
+                pDev->MailboxAddress,
+                sync ? "SYNC" : "ASYNC"));
+
+    status = HIFReadWrite(pDev->HIFDevice,
+                          pDev->MailboxAddress,
+                          pPacket->pBuffer,
+                          paddedLength,
+                          sync ? HIF_RD_SYNC_BLOCK_INC : HIF_RD_ASYNC_BLOCK_INC,
+                          sync ? NULL : pPacket);  /* pass the packet as the context to the HIF request */
+
+    if (sync) {
+        pPacket->Status = status;
+    }
+
+    return status;
+}
+
+#ifdef MBOXHW_UNIT_TEST
+A_STATUS DoMboxHWTest(AR6K_DEVICE *pDev);
+#endif
+
+#endif /*AR6K_H_*/
diff --git a/target/linux/s3c24xx/files-2.6.30/drivers/ar6000/htc/ar6k_events.c b/target/linux/s3c24xx/files-2.6.30/drivers/ar6000/htc/ar6k_events.c
new file mode 100644
index 000000000..91b29af37
--- /dev/null
+++ b/target/linux/s3c24xx/files-2.6.30/drivers/ar6000/htc/ar6k_events.c
@@ -0,0 +1,638 @@
+/*
+ * AR6K Driver layer event handling (i.e. interrupts, message polling)
+ *
+ * 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 "a_config.h"
+#include "athdefs.h"
+#include "a_types.h"
+#include "AR6Khwreg.h"
+#include "a_osapi.h"
+#include "a_debug.h"
+#include "hif.h"
+#include "htc_packet.h"
+#include "ar6k.h"
+
+extern void AR6KFreeIOPacket(AR6K_DEVICE *pDev, HTC_PACKET *pPacket);
+extern HTC_PACKET *AR6KAllocIOPacket(AR6K_DEVICE *pDev);
+
+static A_STATUS DevServiceDebugInterrupt(AR6K_DEVICE *pDev);
+
+#define DELAY_PER_INTERVAL_MS 10  /* 10 MS delay per polling interval */
+
+/* completion routine for ALL HIF layer async I/O */
+A_STATUS DevRWCompletionHandler(void *context, A_STATUS status)
+{
+    HTC_PACKET *pPacket = (HTC_PACKET *)context;
+
+    COMPLETE_HTC_PACKET(pPacket,status);
+
+    return A_OK;
+}
+
+/* mailbox recv message polling */
+A_STATUS DevPollMboxMsgRecv(AR6K_DEVICE *pDev,
+                            A_UINT32    *pLookAhead,
+                            int          TimeoutMS)
+{
+    A_STATUS status = A_OK;
+    int      timeout = TimeoutMS/DELAY_PER_INTERVAL_MS;
+
+    AR_DEBUG_ASSERT(timeout > 0);
+
+    AR_DEBUG_PRINTF(ATH_DEBUG_RECV,("+DevPollMboxMsgRecv \n"));
+
+    while (TRUE) {
+
+        if (pDev->GetPendingEventsFunc != NULL)
+		{
+
+            HIF_PENDING_EVENTS_INFO events;
+
+            /* the HIF layer uses a special mechanism to get events, do this
+             * synchronously */
+            status = pDev->GetPendingEventsFunc(pDev->HIFDevice,
+                                            &events,
+                                            NULL);
+            if (A_FAILED(status))
+			{
+                AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("Failed to get pending events \n"));
+				break;
+            }
+
+            if (events.Events & HIF_RECV_MSG_AVAIL)
+			{
+                    /*  there is a message available, the lookahead should be valid now */
+                *pLookAhead = events.LookAhead;
+
+                break;
+            }
+        }
+		else
+		{
+
+                /* this is the standard HIF way.... */
+                /* load the register table */
+            status = HIFReadWrite(pDev->HIFDevice,
+                                  HOST_INT_STATUS_ADDRESS,
+                                  (A_UINT8 *)&pDev->IrqProcRegisters,
+                                  AR6K_IRQ_PROC_REGS_SIZE,
+                                  HIF_RD_SYNC_BYTE_INC,
+                                  NULL);
+
+            if (A_FAILED(status))
+			{
+                AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("Failed to read register table \n"));
+                break;
+            }
+
+                /* check for MBOX data and valid lookahead */
+            if (pDev->IrqProcRegisters.host_int_status & (1 << HTC_MAILBOX))
+			{
+                if (pDev->IrqProcRegisters.rx_lookahead_valid & (1 << HTC_MAILBOX))
+				{
+                    /* mailbox has a message and the look ahead is valid */
+                    *pLookAhead = pDev->IrqProcRegisters.rx_lookahead[HTC_MAILBOX];
+                    break;
+                }
+            }
+
+        }
+
+        timeout--;
+
+        if (timeout <= 0)
+		{
+            AR_DEBUG_PRINTF(ATH_DEBUG_ERR, (" Timeout waiting for recv message \n"));
+            status = A_ERROR;
+
+                /* check if the target asserted */
+            if ( pDev->IrqProcRegisters.counter_int_status & AR6K_TARGET_DEBUG_INTR_MASK) {
+                    /* target signaled an assert, process this pending interrupt
+                     * this will call the target failure handler */
+                DevServiceDebugInterrupt(pDev);
+            }
+
+            break;
+        }
+
+            /* delay a little  */
+         msleep(DELAY_PER_INTERVAL_MS);
+         AR_DEBUG_PRINTF(ATH_DEBUG_RECV,("  Retry Mbox Poll : %d \n",timeout));
+    }
+
+    AR_DEBUG_PRINTF(ATH_DEBUG_RECV,("-DevPollMboxMsgRecv \n"));
+
+    return status;
+}
+
+static A_STATUS DevServiceCPUInterrupt(AR6K_DEVICE *pDev)
+{
+    A_STATUS status;
+    A_UINT8  cpu_int_status;
+    A_UINT8  regBuffer[4];
+
+    AR_DEBUG_PRINTF(ATH_DEBUG_IRQ, ("CPU Interrupt\n"));
+    cpu_int_status = pDev->IrqProcRegisters.cpu_int_status &
+                     pDev->IrqEnableRegisters.cpu_int_status_enable;
+    AR_DEBUG_ASSERT(cpu_int_status);
+    AR_DEBUG_PRINTF(ATH_DEBUG_IRQ,
+                    ("Valid interrupt source(s) in CPU_INT_STATUS: 0x%x\n",
+                    cpu_int_status));
+
+        /* Clear the interrupt */
+    pDev->IrqProcRegisters.cpu_int_status &= ~cpu_int_status; /* W1C */
+
+        /* set up the register transfer buffer to hit the register 4 times , this is done
+         * to make the access 4-byte aligned to mitigate issues with host bus interconnects that
+         * restrict bus transfer lengths to be a multiple of 4-bytes */
+
+        /* set W1C value to clear the interrupt, this hits the register first */
+    regBuffer[0] = cpu_int_status;
+        /* the remaining 4 values are set to zero which have no-effect  */
+    regBuffer[1] = 0;
+    regBuffer[2] = 0;
+    regBuffer[3] = 0;
+
+    status = HIFReadWrite(pDev->HIFDevice,
+                          CPU_INT_STATUS_ADDRESS,
+                          regBuffer,
+                          4,
+                          HIF_WR_SYNC_BYTE_FIX,
+                          NULL);
+
+    AR_DEBUG_ASSERT(status == A_OK);
+    return status;
+}
+
+
+static A_STATUS DevServiceErrorInterrupt(AR6K_DEVICE *pDev)
+{
+    A_STATUS status;
+    A_UINT8  error_int_status;
+    A_UINT8  regBuffer[4];
+
+    AR_DEBUG_PRINTF(ATH_DEBUG_IRQ, ("Error Interrupt\n"));
+    error_int_status = pDev->IrqProcRegisters.error_int_status & 0x0F;
+    AR_DEBUG_ASSERT(error_int_status);
+    AR_DEBUG_PRINTF(ATH_DEBUG_IRQ,
+                    ("Valid interrupt source(s) in ERROR_INT_STATUS: 0x%x\n",
+                    error_int_status));
+
+    if (ERROR_INT_STATUS_WAKEUP_GET(error_int_status)) {
+        /* Wakeup */
+        AR_DEBUG_PRINTF(ATH_DEBUG_IRQ, ("Error : Wakeup\n"));
+    }
+
+    if (ERROR_INT_STATUS_RX_UNDERFLOW_GET(error_int_status)) {
+        /* Rx Underflow */
+        AR_DEBUG_PRINTF(ATH_DEBUG_ERR, ("Error : Rx Underflow\n"));
+    }
+
+    if (ERROR_INT_STATUS_TX_OVERFLOW_GET(error_int_status)) {
+        /* Tx Overflow */
+        AR_DEBUG_PRINTF(ATH_DEBUG_ERR, ("Error : Tx Overflow\n"));
+    }
+
+        /* Clear the interrupt */
+    pDev->IrqProcRegisters.error_int_status &= ~error_int_status; /* W1C */
+
+        /* set up the register transfer buffer to hit the register 4 times , this is done
+         * to make the access 4-byte aligned to mitigate issues with host bus interconnects that
+         * restrict bus transfer lengths to be a multiple of 4-bytes */
+
+        /* set W1C value to clear the interrupt, this hits the register first */
+    regBuffer[0] = error_int_status;
+        /* the remaining 4 values are set to zero which have no-effect  */
+    regBuffer[1] = 0;
+    regBuffer[2] = 0;
+    regBuffer[3] = 0;
+
+    status = HIFReadWrite(pDev->HIFDevice,
+                          ERROR_INT_STATUS_ADDRESS,
+                          regBuffer,
+                          4,
+                          HIF_WR_SYNC_BYTE_FIX,
+                          NULL);
+
+    AR_DEBUG_ASSERT(status == A_OK);
+    return status;
+}
+
+static A_STATUS DevServiceDebugInterrupt(AR6K_DEVICE *pDev)
+{
+    A_UINT32 dummy;
+    A_STATUS status;
+
+    /* Send a target failure event to the application */
+    AR_DEBUG_PRINTF(ATH_DEBUG_ERR, ("Target debug interrupt\n"));
+
+    if (pDev->TargetFailureCallback != NULL) {
+        pDev->TargetFailureCallback(pDev->HTCContext);
+    }
+
+    /* clear the interrupt , the debug error interrupt is
+     * counter 0 */
+        /* read counter to clear interrupt */
+    status = HIFReadWrite(pDev->HIFDevice,
+                          COUNT_DEC_ADDRESS,
+                          (A_UINT8 *)&dummy,
+                          4,
+                          HIF_RD_SYNC_BYTE_INC,
+                          NULL);
+
+    AR_DEBUG_ASSERT(status == A_OK);
+    return status;
+}
+
+static A_STATUS DevServiceCounterInterrupt(AR6K_DEVICE *pDev)
+{
+    A_UINT8 counter_int_status;
+
+    AR_DEBUG_PRINTF(ATH_DEBUG_IRQ, ("Counter Interrupt\n"));
+
+    counter_int_status = pDev->IrqProcRegisters.counter_int_status &
+                         pDev->IrqEnableRegisters.counter_int_status_enable;
+
+    AR_DEBUG_ASSERT(counter_int_status);
+    AR_DEBUG_PRINTF(ATH_DEBUG_IRQ,
+                    ("Valid interrupt source(s) in COUNTER_INT_STATUS: 0x%x\n",
+                    counter_int_status));
+
+    /* Check if the debug interrupt is pending */
+    if (counter_int_status & AR6K_TARGET_DEBUG_INTR_MASK) {
+        return DevServiceDebugInterrupt(pDev);
+    }
+
+    return A_OK;
+}
+
+/* callback when our fetch to get interrupt status registers completes */
+static void DevGetEventAsyncHandler(void *Context, HTC_PACKET *pPacket)
+{
+    AR6K_DEVICE *pDev = (AR6K_DEVICE *)Context;
+    A_UINT32    lookAhead = 0;
+    A_BOOL      otherInts = FALSE;
+
+    AR_DEBUG_PRINTF(ATH_DEBUG_IRQ,("+DevGetEventAsyncHandler: (dev: 0x%X)\n", (A_UINT32)pDev));
+
+    do {
+
+        if (A_FAILED(pPacket->Status)) {
+            AR_DEBUG_PRINTF(ATH_DEBUG_ERR,
+                    (" GetEvents I/O request failed, status:%d \n", pPacket->Status));
+            /* bail out, don't unmask HIF interrupt */
+            break;
+        }
+
+        if (pDev->GetPendingEventsFunc != NULL) {
+                /* the HIF layer collected the information for us */
+            HIF_PENDING_EVENTS_INFO *pEvents = (HIF_PENDING_EVENTS_INFO *)pPacket->pBuffer;
+            if (pEvents->Events & HIF_RECV_MSG_AVAIL) {
+                lookAhead = pEvents->LookAhead;
+                if (0 == lookAhead) {
+                    AR_DEBUG_PRINTF(ATH_DEBUG_ERR,(" DevGetEventAsyncHandler1, lookAhead is zero! \n"));
+                }
+            }
+            if (pEvents->Events & HIF_OTHER_EVENTS) {
+                otherInts = TRUE;
+            }
+        } else {
+                /* standard interrupt table handling.... */
+            AR6K_IRQ_PROC_REGISTERS *pReg = (AR6K_IRQ_PROC_REGISTERS *)pPacket->pBuffer;
+            A_UINT8                 host_int_status;
+
+            host_int_status = pReg->host_int_status & pDev->IrqEnableRegisters.int_status_enable;
+
+            if (host_int_status & (1 << HTC_MAILBOX)) {
+                host_int_status &= ~(1 << HTC_MAILBOX);
+                if (pReg->rx_lookahead_valid & (1 << HTC_MAILBOX)) {
+                        /* mailbox has a message and the look ahead is valid */
+                    lookAhead = pReg->rx_lookahead[HTC_MAILBOX];
+                    if (0 == lookAhead) {
+                        AR_DEBUG_PRINTF(ATH_DEBUG_ERR,(" DevGetEventAsyncHandler2, lookAhead is zero! \n"));
+                    }
+                }
+            }
+
+            if (host_int_status) {
+                    /* there are other interrupts to handle */
+                otherInts = TRUE;
+            }
+        }
+
+        if (otherInts || (lookAhead == 0)) {
+            /* if there are other interrupts to process, we cannot do this in the async handler so
+             * ack the interrupt which will cause our sync handler to run again
+             * if however there are no more messages, we can now ack the interrupt  */
+            AR_DEBUG_PRINTF(ATH_DEBUG_IRQ,
+                (" Acking interrupt from DevGetEventAsyncHandler (otherints:%d, lookahead:0x%X)\n",
+                otherInts, lookAhead));
+            HIFAckInterrupt(pDev->HIFDevice);
+        } else {
+            AR_DEBUG_PRINTF(ATH_DEBUG_IRQ,
+                    (" DevGetEventAsyncHandler : detected another message, lookahead :0x%X \n",
+                    lookAhead));
+                /* lookahead is non-zero and there are no other interrupts to service,
+                 * go get the next message */
+            pDev->MessagePendingCallback(pDev->HTCContext, lookAhead, NULL);
+        }
+
+    } while (FALSE);
+
+        /* free this IO packet */
+    AR6KFreeIOPacket(pDev,pPacket);
+    AR_DEBUG_PRINTF(ATH_DEBUG_IRQ,("-DevGetEventAsyncHandler \n"));
+}
+
+/* called by the HTC layer when it wants us to check if the device has any more pending
+ * recv messages, this starts off a series of async requests to read interrupt registers  */
+A_STATUS DevCheckPendingRecvMsgsAsync(void *context)
+{
+    AR6K_DEVICE  *pDev = (AR6K_DEVICE *)context;
+    A_STATUS      status = A_OK;
+    HTC_PACKET   *pIOPacket;
+
+    /* this is called in an ASYNC only context, we may NOT block, sleep or call any apis that can
+     * cause us to switch contexts */
+
+   AR_DEBUG_PRINTF(ATH_DEBUG_IRQ,("+DevCheckPendingRecvMsgsAsync: (dev: 0x%X)\n", (A_UINT32)pDev));
+
+   do {
+
+        if (HIF_DEVICE_IRQ_SYNC_ONLY == pDev->HifIRQProcessingMode) {
+                /* break the async processing chain right here, no need to continue.
+                 * The DevDsrHandler() will handle things in a loop when things are driven
+                 * synchronously  */
+            break;
+        }
+            /* first allocate one of our HTC packets we created for async I/O
+             * we reuse HTC packet definitions so that we can use the completion mechanism
+             * in DevRWCompletionHandler() */
+        pIOPacket = AR6KAllocIOPacket(pDev);
+
+        if (NULL == pIOPacket) {
+                /* there should be only 1 asynchronous request out at a time to read these registers
+                 * so this should actually never happen */
+            status = A_NO_MEMORY;
+            AR_DEBUG_ASSERT(FALSE);
+            break;
+        }
+
+            /* stick in our completion routine when the I/O operation completes */
+        pIOPacket->Completion = DevGetEventAsyncHandler;
+        pIOPacket->pContext = pDev;
+
+        if (pDev->GetPendingEventsFunc) {
+                /* HIF layer has it's own mechanism, pass the IO to it.. */
+            status = pDev->GetPendingEventsFunc(pDev->HIFDevice,
+                                                (HIF_PENDING_EVENTS_INFO *)pIOPacket->pBuffer,
+                                                pIOPacket);
+
+        } else {
+                /* standard way, read the interrupt register table asynchronously again */
+            status = HIFReadWrite(pDev->HIFDevice,
+                                  HOST_INT_STATUS_ADDRESS,
+                                  pIOPacket->pBuffer,
+                                  AR6K_IRQ_PROC_REGS_SIZE,
+                                  HIF_RD_ASYNC_BYTE_INC,
+                                  pIOPacket);
+        }
+
+        AR_DEBUG_PRINTF(ATH_DEBUG_IRQ,(" Async IO issued to get interrupt status...\n"));
+   } while (FALSE);
+
+   AR_DEBUG_PRINTF(ATH_DEBUG_IRQ,("-DevCheckPendingRecvMsgsAsync \n"));
+
+   return status;
+}
+
+/* process pending interrupts synchronously */
+static A_STATUS ProcessPendingIRQs(AR6K_DEVICE *pDev, A_BOOL *pDone, A_BOOL *pASyncProcessing)
+{
+    A_STATUS    status = A_OK;
+    A_UINT8     host_int_status = 0;
+    A_UINT32    lookAhead = 0;
+
+    AR_DEBUG_PRINTF(ATH_DEBUG_IRQ,("+ProcessPendingIRQs: (dev: 0x%X)\n", (A_UINT32)pDev));
+
+    /*** NOTE: the HIF implementation guarantees that the context of this call allows
+     *         us to perform SYNCHRONOUS I/O, that is we can block, sleep or call any API that
+     *         can block or switch thread/task ontexts.
+     *         This is a fully schedulable context.
+     * */
+    do {
+
+        if (pDev->GetPendingEventsFunc != NULL) {
+            HIF_PENDING_EVENTS_INFO events;
+
+                /* the HIF layer uses a special mechanism to get events
+                 * get this synchronously  */
+            status = pDev->GetPendingEventsFunc(pDev->HIFDevice,
+                                                &events,
+                                                NULL);
+
+            if (A_FAILED(status)) {
+                break;
+            }
+
+            if (events.Events & HIF_RECV_MSG_AVAIL) {
+                lookAhead = events.LookAhead;
+                if (0 == lookAhead) {
+                    AR_DEBUG_PRINTF(ATH_DEBUG_ERR,(" ProcessPendingIRQs1 lookAhead is zero! \n"));
+                }
+            }
+
+            if (!(events.Events & HIF_OTHER_EVENTS) ||
+                !(pDev->IrqEnableRegisters.int_status_enable & OTHER_INTS_ENABLED)) {
+                    /* no need to read the register table, no other interesting interrupts.
+                     * Some interfaces (like SPI) can shadow interrupt sources without
+                     * requiring the host to do a full table read */
+                break;
+            }
+
+            /* otherwise fall through and read the register table */
+        }
+
+        /*
+         * Read the first 28 bytes of the HTC register table. This will yield us
+         * the value of different int status registers and the lookahead
+         * registers.
+         *    length = sizeof(int_status) + sizeof(cpu_int_status) +
+         *             sizeof(error_int_status) + sizeof(counter_int_status) +
+         *             sizeof(mbox_frame) + sizeof(rx_lookahead_valid) +
+         *             sizeof(hole) +  sizeof(rx_lookahead) +
+         *             sizeof(int_status_enable) + sizeof(cpu_int_status_enable) +
+         *             sizeof(error_status_enable) +
+         *             sizeof(counter_int_status_enable);
+         *
+        */
+        status = HIFReadWrite(pDev->HIFDevice,
+                              HOST_INT_STATUS_ADDRESS,
+                              (A_UINT8 *)&pDev->IrqProcRegisters,
+                              AR6K_IRQ_PROC_REGS_SIZE,
+                              HIF_RD_SYNC_BYTE_INC,
+                              NULL);
+
+        if (A_FAILED(status)) {
+            break;
+        }
+
+        if (AR_DEBUG_LVL_CHECK(ATH_DEBUG_IRQ)) {
+            DevDumpRegisters(&pDev->IrqProcRegisters,
+                             &pDev->IrqEnableRegisters);
+        }
+
+            /* Update only those registers that are enabled */
+        host_int_status = pDev->IrqProcRegisters.host_int_status &
+                          pDev->IrqEnableRegisters.int_status_enable;
+
+        if (NULL == pDev->GetPendingEventsFunc) {
+                /* only look at mailbox status if the HIF layer did not provide this function,
+                 * on some HIF interfaces reading the RX lookahead is not valid to do */
+            if (host_int_status & (1 << HTC_MAILBOX)) {
+                    /* mask out pending mailbox value, we use "lookAhead" as the real flag for
+                     * mailbox processing below */
+                host_int_status &= ~(1 << HTC_MAILBOX);
+                if (pDev->IrqProcRegisters.rx_lookahead_valid & (1 << HTC_MAILBOX)) {
+                        /* mailbox has a message and the look ahead is valid */
+                    lookAhead = pDev->IrqProcRegisters.rx_lookahead[HTC_MAILBOX];
+                    if (0 == lookAhead) {
+                        AR_DEBUG_PRINTF(ATH_DEBUG_ERR,(" ProcessPendingIRQs2, lookAhead is zero! \n"));
+                    }
+                }
+            }
+        } else {
+                /* not valid to check if the HIF has another mechanism for reading mailbox pending status*/
+            host_int_status &= ~(1 << HTC_MAILBOX);
+        }
+
+    } while (FALSE);
+
+
+    do {
+
+            /* did the interrupt status fetches succeed? */
+        if (A_FAILED(status)) {
+            break;
+        }
+
+        if ((0 == host_int_status) && (0 == lookAhead)) {
+                /* nothing to process, the caller can use this to break out of a loop */
+            *pDone = TRUE;
+            break;
+        }
+
+        if (lookAhead != 0) {
+            AR_DEBUG_PRINTF(ATH_DEBUG_IRQ,("Pending mailbox message, LookAhead: 0x%X\n",lookAhead));
+                /* Mailbox Interrupt, the HTC layer may issue async requests to empty the
+                 * mailbox...
+                 * When emptying the recv mailbox we use the async handler above called from the
+                 * completion routine of the callers read request. This can improve performance
+                 * by reducing context switching when we rapidly pull packets */
+            status = pDev->MessagePendingCallback(pDev->HTCContext, lookAhead, pASyncProcessing);
+            if (A_FAILED(status)) {
+                break;
+            }
+        }
+
+            /* now handle the rest of them */
+        AR_DEBUG_PRINTF(ATH_DEBUG_IRQ,
+                            (" Valid interrupt source(s) for OTHER interrupts: 0x%x\n",
+                            host_int_status));
+
+        if (HOST_INT_STATUS_CPU_GET(host_int_status)) {
+                /* CPU Interrupt */
+            status = DevServiceCPUInterrupt(pDev);
+            if (A_FAILED(status)){
+                break;
+            }
+        }
+
+        if (HOST_INT_STATUS_ERROR_GET(host_int_status)) {
+                /* Error Interrupt */
+            status = DevServiceErrorInterrupt(pDev);
+            if (A_FAILED(status)){
+                break;
+            }
+        }
+
+        if (HOST_INT_STATUS_COUNTER_GET(host_int_status)) {
+                /* Counter Interrupt */
+            status = DevServiceCounterInterrupt(pDev);
+            if (A_FAILED(status)){
+                break;
+            }
+        }
+
+    } while (FALSE);
+
+    AR_DEBUG_PRINTF(ATH_DEBUG_IRQ,("-ProcessPendingIRQs: (done:%d, async:%d) status=%d \n",
+                *pDone, *pASyncProcessing, status));
+
+    return status;
+}
+
+
+/* Synchronousinterrupt handler, this handler kicks off all interrupt processing.*/
+A_STATUS DevDsrHandler(void *context)
+{
+    AR6K_DEVICE *pDev = (AR6K_DEVICE *)context;
+    A_STATUS    status = A_OK;
+    A_BOOL      done = FALSE;
+    A_BOOL      asyncProc = FALSE;
+
+    AR_DEBUG_PRINTF(ATH_DEBUG_IRQ,("+DevDsrHandler: (dev: 0x%X)\n", (A_UINT32)pDev));
+
+
+    while (!done) {
+        status = ProcessPendingIRQs(pDev, &done, &asyncProc);
+        if (A_FAILED(status)) {
+            break;
+        }
+
+        if (HIF_DEVICE_IRQ_SYNC_ONLY == pDev->HifIRQProcessingMode) {
+            /* the HIF layer does not allow async IRQ processing, override the asyncProc flag */
+            asyncProc = FALSE;
+            /* this will cause us to re-enter ProcessPendingIRQ() and re-read interrupt status registers.
+             * this has a nice side effect of blocking us until all async read requests are completed.
+             * This behavior is required on some HIF implementations that do not allow ASYNC
+             * processing in interrupt handlers (like Windows CE) */
+        }
+
+        if (asyncProc) {
+                /* the function performed some async I/O for performance, we
+                   need to exit the ISR immediately, the check below will prevent the interrupt from being
+                   Ack'd while we handle it asynchronously */
+            break;
+        }
+
+    }
+
+    if (A_SUCCESS(status) && !asyncProc) {
+            /* Ack the interrupt only if :
+             *  1. we did not get any errors in processing interrupts
+             *  2. there are no outstanding async processing requests */
+        AR_DEBUG_PRINTF(ATH_DEBUG_IRQ,(" Acking interrupt from DevDsrHandler \n"));
+        HIFAckInterrupt(pDev->HIFDevice);
+    }
+
+    AR_DEBUG_PRINTF(ATH_DEBUG_IRQ,("-DevDsrHandler \n"));
+    return A_OK;
+}
+
+
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
+}
diff --git a/target/linux/s3c24xx/files-2.6.30/drivers/ar6000/htc/htc_debug.h b/target/linux/s3c24xx/files-2.6.30/drivers/ar6000/htc/htc_debug.h
new file mode 100644
index 000000000..08080be51
--- /dev/null
+++ b/target/linux/s3c24xx/files-2.6.30/drivers/ar6000/htc/htc_debug.h
@@ -0,0 +1,65 @@
+#ifndef HTC_DEBUG_H_
+#define HTC_DEBUG_H_
+/*
+ *
+ * Copyright (c) 2004-2007 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.
+ *
+ *
+ *
+ */
+
+/* ------- Debug related stuff ------- */
+enum {
+    ATH_DEBUG_SEND = 0x0001,
+    ATH_DEBUG_RECV = 0x0002,
+    ATH_DEBUG_SYNC = 0x0004,
+    ATH_DEBUG_DUMP = 0x0008,
+    ATH_DEBUG_IRQ  = 0x0010,
+    ATH_DEBUG_TRC  = 0x0020,
+    ATH_DEBUG_WARN = 0x0040,
+    ATH_DEBUG_ERR  = 0x0080,
+    ATH_DEBUG_ANY  = 0xFFFF,
+};
+
+#ifdef DEBUG
+
+// TODO FIX usage of A_PRINTF!
+#define AR_DEBUG_LVL_CHECK(lvl) (debughtc & (lvl))
+#define AR_DEBUG_PRINTBUF(buffer, length, desc) do {   \
+    if (debughtc & ATH_DEBUG_DUMP) {             \
+        DebugDumpBytes(buffer, length,desc);               \
+    }                                            \
+} while(0)
+#define PRINTX_ARG(arg...) arg
+#define AR_DEBUG_PRINTF(flags, args) do {        \
+    if (debughtc & (flags)) {                    \
+        A_PRINTF(KERN_ALERT PRINTX_ARG args);    \
+    }                                            \
+} while (0)
+#define AR_DEBUG_ASSERT(test) do {               \
+    if (!(test)) {                               \
+        AR_DEBUG_PRINTF(ATH_DEBUG_ERR, ("Debug Assert Caught, File %s, Line: %d, Test:%s \n",__FILE__, __LINE__,#test));         \
+    }                                            \
+} while(0)
+extern int debughtc;
+#else
+#define AR_DEBUG_PRINTF(flags, args)
+#define AR_DEBUG_PRINTBUF(buffer, length, desc)
+#define AR_DEBUG_ASSERT(test)
+#define AR_DEBUG_LVL_CHECK(lvl) 0
+#endif
+
+void DebugDumpBytes(A_UCHAR *buffer, A_UINT16 length, char *pDescription);
+
+#endif /*HTC_DEBUG_H_*/
diff --git a/target/linux/s3c24xx/files-2.6.30/drivers/ar6000/htc/htc_internal.h b/target/linux/s3c24xx/files-2.6.30/drivers/ar6000/htc/htc_internal.h
new file mode 100644
index 000000000..ebb8ac16e
--- /dev/null
+++ b/target/linux/s3c24xx/files-2.6.30/drivers/ar6000/htc/htc_internal.h
@@ -0,0 +1,168 @@
+/*
+ *
+ * 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.
+ *
+ *
+ *
+ */
+
+#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 "a_debug.h"
+#include "htc.h"
+#include "htc_api.h"
+#include "bmi_msg.h"
+#include "hif.h"
+#include "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
+
+typedef struct _HTC_ENDPOINT {
+    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                         CurrentTxQueueDepth; /* current TX queue depth */
+    int                         MaxMsgLength;        /* max length of endpoint message */
+#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)
+
+#define HTC_CONTROL_BUFFER_SIZE (HTC_MAX_CONTROL_MESSAGE_LENGTH + HTC_HDR_LENGTH)
+
+typedef struct HTC_CONTROL_BUFFER {
+    HTC_PACKET    HtcPacket;
+    A_UINT8       Buffer[HTC_CONTROL_BUFFER_SIZE];
+} HTC_CONTROL_BUFFER;
+
+/* 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;
+    int                         TargetCreditSize;
+    A_MUTEX_T                   HTCLock;
+    A_MUTEX_T                   HTCRxLock;
+    A_MUTEX_T                   HTCTxLock;
+    AR6K_DEVICE                 Device;         /* AR6K - specific state */
+    A_UINT32                    HTCStateFlags;
+    HTC_ENDPOINT_ID             EpWaitingForBuffers;
+    A_BOOL                      TargetFailure;
+    void                       *pInstanceContext;
+#define HTC_STATE_WAIT_BUFFERS  (1 << 0)
+#define HTC_STATE_STOPPING      (1 << 1)
+#ifdef HTC_CAPTURE_LAST_FRAME
+    HTC_FRAME_HDR               LastFrameHdr;  /* useful for debugging */
+    A_UINT8                     LastTrailer[256];
+    A_UINT8                     LastTrailerLength;
+#endif
+} HTC_TARGET;
+
+#define HTC_STOPPING(t) ((t)->HTCStateFlags & HTC_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)                \
+{                                                   \
+    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, A_UINT8 Flags);
+A_STATUS    HTCIssueRecv(HTC_TARGET *target, HTC_PACKET *pPacket);
+void        HTCRecvCompleteHandler(void *Context, HTC_PACKET *pPacket);
+A_STATUS    HTCRecvMessagePendingHandler(void *Context, A_UINT32 LookAhead, A_BOOL *pAsyncProc);
+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);
+void        DumpCreditDist(HTC_ENDPOINT_CREDIT_DIST *pEPDist);
+void        DumpCreditDistStates(HTC_TARGET *target);
+void 		DebugDumpBytes(A_UCHAR *buffer, A_UINT16 length, char *pDescription);
+
+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); \
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _HTC_INTERNAL_H_ */
diff --git a/target/linux/s3c24xx/files-2.6.30/drivers/ar6000/htc/htc_recv.c b/target/linux/s3c24xx/files-2.6.30/drivers/ar6000/htc/htc_recv.c
new file mode 100644
index 000000000..4be2b0833
--- /dev/null
+++ b/target/linux/s3c24xx/files-2.6.30/drivers/ar6000/htc/htc_recv.c
@@ -0,0 +1,703 @@
+/*
+ *
+ * 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"
+
+#define HTCIssueRecv(t, p) \
+    DevRecvPacket(&(t)->Device,  \
+                  (p),          \
+                  (p)->ActualLength)
+
+#define DO_RCV_COMPLETION(t,p,e)            \
+{                                           \
+    if ((p)->ActualLength > 0) {            \
+        AR_DEBUG_PRINTF(ATH_DEBUG_RECV, (" completing packet 0x%X (%d bytes) on ep : %d \n", \
+            (A_UINT32)(p), (p)->ActualLength, (p)->Endpoint));  \
+        (e)->EpCallBacks.EpRecv((e)->EpCallBacks.pContext,      \
+                                (p));                           \
+    } else {                                                    \
+        AR_DEBUG_PRINTF(ATH_DEBUG_RECV, (" recycling empty packet \n"));  \
+        HTC_RECYCLE_RX_PKT((t), (p));                           \
+    }                                                           \
+}
+
+#ifdef HTC_EP_STAT_PROFILING
+#define HTC_RX_STAT_PROFILE(t,ep,lookAhead)            \
+{                                                      \
+    LOCK_HTC_RX((t));                                  \
+    INC_HTC_EP_STAT((ep), RxReceived, 1);              \
+    if ((lookAhead) != 0) {                            \
+        INC_HTC_EP_STAT((ep), RxLookAheads, 1);        \
+    }                                                  \
+    UNLOCK_HTC_RX((t));                                \
+}
+#else
+#define HTC_RX_STAT_PROFILE(t,ep,lookAhead)
+#endif
+
+static INLINE A_STATUS HTCProcessTrailer(HTC_TARGET *target,
+                                         A_UINT8    *pBuffer,
+                                         int         Length,
+                                         A_UINT32   *pNextLookAhead,
+                                         HTC_ENDPOINT_ID FromEndpoint)
+{
+    HTC_RECORD_HDR          *pRecord;
+    A_UINT8                 *pRecordBuf;
+    HTC_LOOKAHEAD_REPORT    *pLookAhead;
+    A_UINT8                 *pOrigBuffer;
+    int                     origLength;
+    A_STATUS                status;
+
+    AR_DEBUG_PRINTF(ATH_DEBUG_RECV, ("+HTCProcessTrailer (length:%d) \n", Length));
+
+    if (AR_DEBUG_LVL_CHECK(ATH_DEBUG_RECV)) {
+        AR_DEBUG_PRINTBUF(pBuffer,Length,"Recv Trailer");
+    }
+
+    pOrigBuffer = pBuffer;
+    origLength = Length;
+    status = A_OK;
+
+    while (Length > 0) {
+
+        if (Length < sizeof(HTC_RECORD_HDR)) {
+            status = A_EPROTO;
+            break;
+        }
+            /* these are byte aligned structs */
+        pRecord = (HTC_RECORD_HDR *)pBuffer;
+        Length -= sizeof(HTC_RECORD_HDR);
+        pBuffer += sizeof(HTC_RECORD_HDR);
+
+        if (pRecord->Length > Length) {
+                /* no room left in buffer for record */
+            AR_DEBUG_PRINTF(ATH_DEBUG_ERR,
+                (" invalid record length: %d (id:%d) buffer has: %d bytes left \n",
+                        pRecord->Length, pRecord->RecordID, Length));
+            status = A_EPROTO;
+            break;
+        }
+            /* start of record follows the header */
+        pRecordBuf = pBuffer;
+
+        switch (pRecord->RecordID) {
+            case HTC_RECORD_CREDITS:
+                AR_DEBUG_ASSERT(pRecord->Length >= sizeof(HTC_CREDIT_REPORT));
+                HTCProcessCreditRpt(target,
+                                    (HTC_CREDIT_REPORT *)pRecordBuf,
+                                    pRecord->Length / (sizeof(HTC_CREDIT_REPORT)),
+                                    FromEndpoint);
+                break;
+            case HTC_RECORD_LOOKAHEAD:
+                AR_DEBUG_ASSERT(pRecord->Length >= sizeof(HTC_LOOKAHEAD_REPORT));
+                pLookAhead = (HTC_LOOKAHEAD_REPORT *)pRecordBuf;
+                if ((pLookAhead->PreValid == ((~pLookAhead->PostValid) & 0xFF)) &&
+                    (pNextLookAhead != NULL)) {
+
+                    AR_DEBUG_PRINTF(ATH_DEBUG_RECV,
+                                (" LookAhead Report Found (pre valid:0x%X, post valid:0x%X) \n",
+                                pLookAhead->PreValid,
+                                pLookAhead->PostValid));
+
+                        /* look ahead bytes are valid, copy them over */
+                    ((A_UINT8 *)pNextLookAhead)[0] = pLookAhead->LookAhead[0];
+                    ((A_UINT8 *)pNextLookAhead)[1] = pLookAhead->LookAhead[1];
+                    ((A_UINT8 *)pNextLookAhead)[2] = pLookAhead->LookAhead[2];
+                    ((A_UINT8 *)pNextLookAhead)[3] = pLookAhead->LookAhead[3];
+
+                    if (AR_DEBUG_LVL_CHECK(ATH_DEBUG_RECV)) {
+                        DebugDumpBytes((A_UINT8 *)pNextLookAhead,4,"Next Look Ahead");
+                    }
+                }
+                break;
+            default:
+                AR_DEBUG_PRINTF(ATH_DEBUG_ERR, (" unhandled record: id:%d length:%d \n",
+                        pRecord->RecordID, pRecord->Length));
+                break;
+        }
+
+        if (A_FAILED(status)) {
+            break;
+        }
+
+            /* advance buffer past this record for next time around */
+        pBuffer += pRecord->Length;
+        Length -= pRecord->Length;
+    }
+
+    if (A_FAILED(status)) {
+        DebugDumpBytes(pOrigBuffer,origLength,"BAD Recv Trailer");
+    }
+
+    AR_DEBUG_PRINTF(ATH_DEBUG_RECV, ("-HTCProcessTrailer \n"));
+    return status;
+
+}
+
+/* process a received message (i.e. strip off header, process any trailer data)
+ * note : locks must be released when this function is called */
+static A_STATUS HTCProcessRecvHeader(HTC_TARGET *target, HTC_PACKET *pPacket, A_UINT32 *pNextLookAhead)
+{
+    A_UINT8   temp;
+    A_UINT8   *pBuf;
+    A_STATUS  status = A_OK;
+    A_UINT16  payloadLen;
+    A_UINT32  lookAhead;
+
+    pBuf = pPacket->pBuffer;
+
+    AR_DEBUG_PRINTF(ATH_DEBUG_RECV, ("+HTCProcessRecvHeader \n"));
+
+    if (AR_DEBUG_LVL_CHECK(ATH_DEBUG_RECV)) {
+        AR_DEBUG_PRINTBUF(pBuf,pPacket->ActualLength,"HTC Recv PKT");
+    }
+
+    do {
+        /* note, we cannot assume the alignment of pBuffer, so we use the safe macros to
+         * retrieve 16 bit fields */
+        payloadLen = A_GET_UINT16_FIELD(pBuf, HTC_FRAME_HDR, PayloadLen);
+
+        ((A_UINT8 *)&lookAhead)[0] = pBuf[0];
+        ((A_UINT8 *)&lookAhead)[1] = pBuf[1];
+        ((A_UINT8 *)&lookAhead)[2] = pBuf[2];
+        ((A_UINT8 *)&lookAhead)[3] = pBuf[3];
+
+        if (lookAhead != pPacket->HTCReserved) {
+            /* somehow the lookahead that gave us the full read length did not
+             * reflect the actual header in the pending message */
+             AR_DEBUG_PRINTF(ATH_DEBUG_ERR,
+                    ("HTCProcessRecvHeader, lookahead mismatch! \n"));
+             DebugDumpBytes((A_UINT8 *)&pPacket->HTCReserved,4,"Expected Message LookAhead");
+             DebugDumpBytes(pBuf,sizeof(HTC_FRAME_HDR),"Current Frame Header");
+#ifdef HTC_CAPTURE_LAST_FRAME
+            DebugDumpBytes((A_UINT8 *)&target->LastFrameHdr,sizeof(HTC_FRAME_HDR),"Last Frame Header");
+            if (target->LastTrailerLength != 0) {
+                DebugDumpBytes(target->LastTrailer,
+                               target->LastTrailerLength,
+                               "Last trailer");
+            }
+#endif
+            status = A_EPROTO;
+            break;
+        }
+
+            /* get flags */
+        temp = A_GET_UINT8_FIELD(pBuf, HTC_FRAME_HDR, Flags);
+
+        if (temp & HTC_FLAGS_RECV_TRAILER) {
+            /* this packet has a trailer */
+
+                /* extract the trailer length in control byte 0 */
+            temp = A_GET_UINT8_FIELD(pBuf, HTC_FRAME_HDR, ControlBytes[0]);
+
+            if ((temp < sizeof(HTC_RECORD_HDR)) || (temp > payloadLen)) {
+                AR_DEBUG_PRINTF(ATH_DEBUG_ERR,
+                    ("HTCProcessRecvHeader, invalid header (payloadlength should be :%d, CB[0] is:%d) \n",
+                        payloadLen, temp));
+                status = A_EPROTO;
+                break;
+            }
+
+                /* process trailer data that follows HDR + application payload */
+            status = HTCProcessTrailer(target,
+                                       (pBuf + HTC_HDR_LENGTH + payloadLen - temp),
+                                       temp,
+                                       pNextLookAhead,
+                                       pPacket->Endpoint);
+
+            if (A_FAILED(status)) {
+                break;
+            }
+
+#ifdef HTC_CAPTURE_LAST_FRAME
+            A_MEMCPY(target->LastTrailer, (pBuf + HTC_HDR_LENGTH + payloadLen - temp), temp);
+            target->LastTrailerLength = temp;
+#endif
+                /* trim length by trailer bytes */
+            pPacket->ActualLength -= temp;
+        }
+#ifdef HTC_CAPTURE_LAST_FRAME
+         else {
+            target->LastTrailerLength = 0;
+        }
+#endif
+
+            /* if we get to this point, the packet is good */
+            /* remove header and adjust length */
+        pPacket->pBuffer += HTC_HDR_LENGTH;
+        pPacket->ActualLength -= HTC_HDR_LENGTH;
+
+    } while (FALSE);
+
+    if (A_FAILED(status)) {
+            /* dump the whole packet */
+        DebugDumpBytes(pBuf,pPacket->ActualLength,"BAD HTC Recv PKT");
+    } else {
+#ifdef HTC_CAPTURE_LAST_FRAME
+        A_MEMCPY(&target->LastFrameHdr,pBuf,sizeof(HTC_FRAME_HDR));
+#endif
+        if (AR_DEBUG_LVL_CHECK(ATH_DEBUG_RECV)) {
+            if (pPacket->ActualLength > 0) {
+                AR_DEBUG_PRINTBUF(pPacket->pBuffer,pPacket->ActualLength,"HTC - Application Msg");
+            }
+        }
+    }
+
+    AR_DEBUG_PRINTF(ATH_DEBUG_RECV, ("-HTCProcessRecvHeader \n"));
+    return status;
+}
+
+/* asynchronous completion handler for recv packet fetching, when the device layer
+ * completes a read request, it will call this completion handler */
+void HTCRecvCompleteHandler(void *Context, HTC_PACKET *pPacket)
+{
+    HTC_TARGET      *target = (HTC_TARGET *)Context;
+    HTC_ENDPOINT    *pEndpoint;
+    A_UINT32        nextLookAhead = 0;
+    A_STATUS        status;
+
+    AR_DEBUG_PRINTF(ATH_DEBUG_RECV, ("+HTCRecvCompleteHandler (status:%d, ep:%d) \n",
+                pPacket->Status, pPacket->Endpoint));
+
+    AR_DEBUG_ASSERT(pPacket->Endpoint < ENDPOINT_MAX);
+    pEndpoint = &target->EndPoint[pPacket->Endpoint];
+    pPacket->Completion = NULL;
+
+        /* get completion status */
+    status = pPacket->Status;
+
+    do {
+        if (A_FAILED(status)) {
+            AR_DEBUG_PRINTF(ATH_DEBUG_ERR, ("HTCRecvCompleteHandler: request failed (status:%d, ep:%d) \n",
+                pPacket->Status, pPacket->Endpoint));
+            break;
+        }
+            /* process the header for any trailer data */
+        status = HTCProcessRecvHeader(target,pPacket,&nextLookAhead);
+
+        if (A_FAILED(status)) {
+            break;
+        }
+            /* was there a lookahead for the next packet? */
+        if (nextLookAhead != 0) {
+            A_STATUS nextStatus;
+            AR_DEBUG_PRINTF(ATH_DEBUG_RECV,
+                            ("HTCRecvCompleteHandler - next look ahead was non-zero : 0x%X \n",
+                             nextLookAhead));
+                /* we have another packet, get the next packet fetch started (pipelined) before
+                 * we call into the endpoint's callback, this will start another async request */
+            nextStatus = HTCRecvMessagePendingHandler(target,nextLookAhead,NULL);
+            if (A_EPROTO == nextStatus) {
+                AR_DEBUG_PRINTF(ATH_DEBUG_ERR,
+                            ("Next look ahead from recv header was INVALID\n"));
+                DebugDumpBytes((A_UINT8 *)&nextLookAhead,
+                                4,
+                                "BAD lookahead from lookahead report");
+            }
+        } else {
+             AR_DEBUG_PRINTF(ATH_DEBUG_RECV,
+            ("HTCRecvCompleteHandler - rechecking for more messages...\n"));
+            /* if we did not get anything on the look-ahead,
+             * call device layer to asynchronously re-check for messages. If we can keep the async
+             * processing going we get better performance.  If there is a pending message we will keep processing
+             * messages asynchronously which should pipeline things nicely */
+            DevCheckPendingRecvMsgsAsync(&target->Device);
+        }
+
+        HTC_RX_STAT_PROFILE(target,pEndpoint,nextLookAhead);
+        DO_RCV_COMPLETION(target,pPacket,pEndpoint);
+
+    } while (FALSE);
+
+    if (A_FAILED(status)) {
+         AR_DEBUG_PRINTF(ATH_DEBUG_ERR,
+                         ("HTCRecvCompleteHandler , message fetch failed (status = %d) \n",
+                         status));
+            /* recyle this packet */
+         HTC_RECYCLE_RX_PKT(target, pPacket);
+    }
+
+    AR_DEBUG_PRINTF(ATH_DEBUG_RECV, ("-HTCRecvCompleteHandler\n"));
+}
+
+/* synchronously wait for a control message from the target,
+ * This function is used at initialization time ONLY.  At init messages
+ * on ENDPOINT 0 are expected. */
+A_STATUS HTCWaitforControlMessage(HTC_TARGET *target, HTC_PACKET **ppControlPacket)
+{
+    A_STATUS        status;
+    A_UINT32        lookAhead;
+    HTC_PACKET      *pPacket = NULL;
+    HTC_FRAME_HDR   *pHdr;
+
+    AR_DEBUG_PRINTF(ATH_DEBUG_RECV,("+HTCWaitforControlMessage \n"));
+
+    do  {
+
+        *ppControlPacket = NULL;
+
+            /* call the polling function to see if we have a message */
+        status = DevPollMboxMsgRecv(&target->Device,
+                                    &lookAhead,
+                                    HTC_TARGET_RESPONSE_TIMEOUT);
+
+        if (A_FAILED(status)) {
+            break;
+        }
+
+        AR_DEBUG_PRINTF(ATH_DEBUG_RECV,
+                ("HTCWaitforControlMessage : lookAhead : 0x%X \n", lookAhead));
+
+            /* check the lookahead */
+        pHdr = (HTC_FRAME_HDR *)&lookAhead;
+
+        if (pHdr->EndpointID != ENDPOINT_0) {
+                /* unexpected endpoint number, should be zero */
+            AR_DEBUG_ASSERT(FALSE);
+            status = A_EPROTO;
+            break;
+        }
+
+        if (A_FAILED(status)) {
+                /* bad message */
+            AR_DEBUG_ASSERT(FALSE);
+            status = A_EPROTO;
+            break;
+        }
+
+        pPacket = HTC_ALLOC_CONTROL_RX(target);
+
+        if (pPacket == NULL) {
+            AR_DEBUG_ASSERT(FALSE);
+            status = A_NO_MEMORY;
+            break;
+        }
+
+        pPacket->HTCReserved = lookAhead;
+        pPacket->ActualLength = pHdr->PayloadLen + HTC_HDR_LENGTH;
+
+        if (pPacket->ActualLength > pPacket->BufferLength) {
+            AR_DEBUG_ASSERT(FALSE);
+            status = A_EPROTO;
+            break;
+        }
+
+            /* we want synchronous operation */
+        pPacket->Completion = NULL;
+
+            /* get the message from the device, this will block */
+        status = HTCIssueRecv(target, pPacket);
+
+        if (A_FAILED(status)) {
+            break;
+        }
+
+            /* process receive header */
+        status = HTCProcessRecvHeader(target,pPacket,NULL);
+
+        pPacket->Status = status;
+
+        if (A_FAILED(status)) {
+            AR_DEBUG_PRINTF(ATH_DEBUG_ERR,
+                    ("HTCWaitforControlMessage, HTCProcessRecvHeader failed (status = %d) \n",
+                     status));
+            break;
+        }
+
+            /* give the caller this control message packet, they are responsible to free */
+        *ppControlPacket = pPacket;
+
+    } while (FALSE);
+
+    if (A_FAILED(status)) {
+        if (pPacket != NULL) {
+                /* cleanup buffer on error */
+            HTC_FREE_CONTROL_RX(target,pPacket);
+        }
+    }
+
+    AR_DEBUG_PRINTF(ATH_DEBUG_RECV,("-HTCWaitforControlMessage \n"));
+
+    return status;
+}
+
+/* callback when device layer or lookahead report parsing detects a pending message */
+A_STATUS HTCRecvMessagePendingHandler(void *Context, A_UINT32 LookAhead, A_BOOL *pAsyncProc)
+{
+    HTC_TARGET      *target = (HTC_TARGET *)Context;
+    A_STATUS         status = A_OK;
+    HTC_PACKET      *pPacket = NULL;
+    HTC_FRAME_HDR   *pHdr;
+    HTC_ENDPOINT    *pEndpoint;
+    A_BOOL          asyncProc = FALSE;
+
+    AR_DEBUG_PRINTF(ATH_DEBUG_RECV,("+HTCRecvMessagePendingHandler LookAhead:0x%X \n",LookAhead));
+
+    if (IS_DEV_IRQ_PROCESSING_ASYNC_ALLOWED(&target->Device)) {
+            /* We use async mode to get the packets if the device layer supports it.
+             * The device layer interfaces with HIF in which HIF may have restrictions on
+             * how interrupts are processed */
+        asyncProc = TRUE;
+    }
+
+    if (pAsyncProc != NULL) {
+            /* indicate to caller how we decided to process this */
+        *pAsyncProc = asyncProc;
+    }
+
+    while (TRUE) {
+
+        pHdr = (HTC_FRAME_HDR *)&LookAhead;
+
+        if (pHdr->EndpointID >= ENDPOINT_MAX) {
+            AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("Invalid Endpoint in look-ahead: %d \n",pHdr->EndpointID));
+                /* invalid endpoint */
+            status = A_EPROTO;
+            break;
+        }
+
+        if (pHdr->PayloadLen > HTC_MAX_PAYLOAD_LENGTH) {
+            AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("Payload length %d exceeds max HTC : %d !\n",
+                    pHdr->PayloadLen, HTC_MAX_PAYLOAD_LENGTH));
+            status = A_EPROTO;
+            break;
+        }
+
+        pEndpoint = &target->EndPoint[pHdr->EndpointID];
+
+        if (0 == pEndpoint->ServiceID) {
+            AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("Endpoint %d is not connected !\n",pHdr->EndpointID));
+                /* endpoint isn't even connected */
+            status = A_EPROTO;
+            break;
+        }
+
+            /* lock RX to get a buffer */
+        LOCK_HTC_RX(target);
+
+            /* get a packet from the endpoint recv queue */
+        pPacket = HTC_PACKET_DEQUEUE(&pEndpoint->RxBuffers);
+
+        if (NULL == pPacket) {
+                /* check for refill handler */
+            if (pEndpoint->EpCallBacks.EpRecvRefill != NULL) {
+                UNLOCK_HTC_RX(target);
+                    /* call the re-fill handler */
+                pEndpoint->EpCallBacks.EpRecvRefill(pEndpoint->EpCallBacks.pContext,
+                                                    pHdr->EndpointID);
+                LOCK_HTC_RX(target);
+                    /* check if we have more buffers */
+                pPacket = HTC_PACKET_DEQUEUE(&pEndpoint->RxBuffers);
+                    /* fall through */
+            }
+        }
+
+        if (NULL == pPacket) {
+                /* this is not an error, we simply need to mark that we are waiting for buffers.*/
+            target->HTCStateFlags |= HTC_STATE_WAIT_BUFFERS;
+            target->EpWaitingForBuffers = pHdr->EndpointID;
+            status = A_NO_MEMORY;
+        }
+
+        UNLOCK_HTC_RX(target);
+
+        if (A_FAILED(status)) {
+                /* no buffers */
+            break;
+        }
+
+        AR_DEBUG_ASSERT(pPacket->Endpoint == pHdr->EndpointID);
+
+            /* make sure this message can fit in the endpoint buffer */
+        if ((pHdr->PayloadLen + HTC_HDR_LENGTH) > pPacket->BufferLength) {
+            AR_DEBUG_PRINTF(ATH_DEBUG_ERR,
+                    ("Payload Length Error : header reports payload of: %d, endpoint buffer size: %d \n",
+                    pHdr->PayloadLen, pPacket->BufferLength));
+            status = A_EPROTO;
+            break;
+        }
+
+        pPacket->HTCReserved = LookAhead; /* set expected look ahead */
+            /* set the amount of data to fetch */
+        pPacket->ActualLength = pHdr->PayloadLen + HTC_HDR_LENGTH;
+
+        if (asyncProc) {
+                /* we use async mode to get the packet if the device layer supports it
+                 * set our callback and context */
+            pPacket->Completion = HTCRecvCompleteHandler;
+            pPacket->pContext = target;
+        } else {
+                /* fully synchronous */
+            pPacket->Completion = NULL;
+        }
+
+            /* go fetch the packet */
+        status = HTCIssueRecv(target, pPacket);
+
+        if (A_FAILED(status)) {
+            break;
+        }
+
+        if (asyncProc) {
+                /* we did this asynchronously so we can get out of the loop, the asynch processing
+                 * creates a chain of requests to continue processing pending messages in the
+                 * context of callbacks  */
+            break;
+        }
+
+            /* in the sync case, we process the packet, check lookaheads and then repeat */
+
+        LookAhead = 0;
+        status = HTCProcessRecvHeader(target,pPacket,&LookAhead);
+
+        if (A_FAILED(status)) {
+            break;
+        }
+
+        HTC_RX_STAT_PROFILE(target,pEndpoint,LookAhead);
+        DO_RCV_COMPLETION(target,pPacket,pEndpoint);
+
+        pPacket = NULL;
+
+        if (0 == LookAhead) {
+            break;
+        }
+
+    }
+
+    if (A_NO_MEMORY == status) {
+        AR_DEBUG_PRINTF(ATH_DEBUG_ERR,
+                (" Endpoint :%d has no buffers, blocking receiver to prevent overrun.. \n",
+                pHdr->EndpointID));
+            /* try to stop receive at the device layer */
+        DevStopRecv(&target->Device, asyncProc ? DEV_STOP_RECV_ASYNC : DEV_STOP_RECV_SYNC);
+        status = A_OK;
+    } else if (A_FAILED(status)) {
+        AR_DEBUG_PRINTF(ATH_DEBUG_ERR,
+                        ("Failed to get pending message : LookAhead Value: 0x%X (status = %d) \n",
+                        LookAhead, status));
+        if (pPacket != NULL) {
+                /* clean up packet on error */
+            HTC_RECYCLE_RX_PKT(target, pPacket);
+        }
+    }
+
+    AR_DEBUG_PRINTF(ATH_DEBUG_RECV,("-HTCRecvMessagePendingHandler \n"));
+
+    return status;
+}
+
+/* Makes a buffer available to the HTC module */
+A_STATUS HTCAddReceivePkt(HTC_HANDLE HTCHandle, HTC_PACKET *pPacket)
+{
+    HTC_TARGET *target = GET_HTC_TARGET_FROM_HANDLE(HTCHandle);
+    HTC_ENDPOINT *pEndpoint;
+    A_BOOL       unblockRecv = FALSE;
+    A_STATUS     status = A_OK;
+
+    AR_DEBUG_PRINTF(ATH_DEBUG_SEND,
+                    ("+- HTCAddReceivePkt: endPointId: %d, buffer: 0x%X, length: %d\n",
+                    pPacket->Endpoint, (A_UINT32)pPacket->pBuffer, pPacket->BufferLength));
+
+    do {
+
+        if (HTC_STOPPING(target)) {
+            status = A_ECANCELED;
+            break;
+        }
+
+        AR_DEBUG_ASSERT(pPacket->Endpoint < ENDPOINT_MAX);
+
+        pEndpoint = &target->EndPoint[pPacket->Endpoint];
+
+        LOCK_HTC_RX(target);
+
+            /* store receive packet */
+        HTC_PACKET_ENQUEUE(&pEndpoint->RxBuffers, pPacket);
+
+            /* check if we are blocked waiting for a new buffer */
+        if (target->HTCStateFlags & HTC_STATE_WAIT_BUFFERS) {
+            if (target->EpWaitingForBuffers == pPacket->Endpoint) {
+                AR_DEBUG_PRINTF(ATH_DEBUG_RECV,(" receiver was blocked on ep:%d, unblocking.. \n",
+                    target->EpWaitingForBuffers));
+                target->HTCStateFlags &= ~HTC_STATE_WAIT_BUFFERS;
+                target->EpWaitingForBuffers = ENDPOINT_MAX;
+                unblockRecv = TRUE;
+            }
+        }
+
+        UNLOCK_HTC_RX(target);
+
+        if (unblockRecv && !HTC_STOPPING(target)) {
+                /* TODO : implement a buffer threshold count? */
+            DevEnableRecv(&target->Device,DEV_ENABLE_RECV_SYNC);
+        }
+
+    } while (FALSE);
+
+    return status;
+}
+
+static void HTCFlushEndpointRX(HTC_TARGET *target, HTC_ENDPOINT *pEndpoint)
+{
+    HTC_PACKET  *pPacket;
+
+    LOCK_HTC_RX(target);
+
+    while (1) {
+        pPacket = HTC_PACKET_DEQUEUE(&pEndpoint->RxBuffers);
+        if (NULL == pPacket) {
+            break;
+        }
+        UNLOCK_HTC_RX(target);
+        pPacket->Status = A_ECANCELED;
+        pPacket->ActualLength = 0;
+        AR_DEBUG_PRINTF(ATH_DEBUG_RECV, ("  Flushing RX packet:0x%X, length:%d, ep:%d \n",
+                (A_UINT32)pPacket, pPacket->BufferLength, pPacket->Endpoint));
+            /* give the packet back */
+        pEndpoint->EpCallBacks.EpRecv(pEndpoint->EpCallBacks.pContext,
+                                      pPacket);
+        LOCK_HTC_RX(target);
+    }
+
+    UNLOCK_HTC_RX(target);
+
+
+}
+
+void HTCFlushRecvBuffers(HTC_TARGET *target)
+{
+    HTC_ENDPOINT    *pEndpoint;
+    int             i;
+
+        /* NOTE: no need to flush endpoint 0, these buffers were
+         * allocated as part of the HTC struct */
+    for (i = ENDPOINT_1; i < ENDPOINT_MAX; i++) {
+        pEndpoint = &target->EndPoint[i];
+        if (pEndpoint->ServiceID == 0) {
+                /* not in use.. */
+            continue;
+        }
+        HTCFlushEndpointRX(target,pEndpoint);
+    }
+
+
+}
+
+
diff --git a/target/linux/s3c24xx/files-2.6.30/drivers/ar6000/htc/htc_send.c b/target/linux/s3c24xx/files-2.6.30/drivers/ar6000/htc/htc_send.c
new file mode 100644
index 000000000..cf0dabef4
--- /dev/null
+++ b/target/linux/s3c24xx/files-2.6.30/drivers/ar6000/htc/htc_send.c
@@ -0,0 +1,538 @@
+/*
+ *
+ * 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"
+
+#define DO_EP_TX_COMPLETION(ep,p)                                    \
+{                                                                    \
+    (p)->Completion = NULL;                                          \
+    (ep)->EpCallBacks.EpTxComplete((ep)->EpCallBacks.pContext,(p));  \
+}
+
+
+/* call the distribute credits callback with the distribution */
+#define DO_DISTRIBUTION(t,reason,description,pList) \
+{                                             \
+    AR_DEBUG_PRINTF(ATH_DEBUG_SEND,           \
+        ("  calling distribute function (%s) (dfn:0x%X, ctxt:0x%X, dist:0x%X) \n", \
+                (description),                                           \
+                (A_UINT32)(t)->DistributeCredits,                        \
+                (A_UINT32)(t)->pCredDistContext,                         \
+                (A_UINT32)pList));                                       \
+    (t)->DistributeCredits((t)->pCredDistContext,                        \
+                           (pList),                                      \
+                           (reason));                                    \
+}
+
+/* our internal send packet completion handler when packets are submited to the AR6K device
+ * layer */
+static void HTCSendPktCompletionHandler(void *Context, HTC_PACKET *pPacket)
+{
+    HTC_TARGET      *target = (HTC_TARGET *)Context;
+    HTC_ENDPOINT    *pEndpoint = &target->EndPoint[pPacket->Endpoint];
+
+
+    if (A_FAILED(pPacket->Status)) {
+        AR_DEBUG_PRINTF(ATH_DEBUG_ERR,
+            ("HTCSendPktCompletionHandler: request failed (status:%d, ep:%d) \n",
+                pPacket->Status, pPacket->Endpoint));
+    }
+        /* first, fixup the head room we allocated */
+    pPacket->pBuffer += HTC_HDR_LENGTH;
+        /* do completion */
+    DO_EP_TX_COMPLETION(pEndpoint,pPacket);
+}
+
+A_STATUS HTCIssueSend(HTC_TARGET *target, HTC_PACKET *pPacket, A_UINT8 SendFlags)
+{
+    A_STATUS status;
+    A_UINT8 *pHdrBuf;
+    A_BOOL   sync = FALSE;
+
+        /* caller always provides headrooom */
+    pPacket->pBuffer -= HTC_HDR_LENGTH;
+    pHdrBuf = pPacket->pBuffer;
+        /* setup frame header */
+    A_SET_UINT16_FIELD(pHdrBuf,HTC_FRAME_HDR,PayloadLen,(A_UINT16)pPacket->ActualLength);
+    A_SET_UINT8_FIELD(pHdrBuf,HTC_FRAME_HDR,Flags,SendFlags);
+    A_SET_UINT8_FIELD(pHdrBuf,HTC_FRAME_HDR,EndpointID, (A_UINT8)pPacket->Endpoint);
+
+    if (pPacket->Completion == NULL) {
+            /* mark that this request was synchronously issued */
+        sync = TRUE;
+    }
+
+    AR_DEBUG_PRINTF(ATH_DEBUG_SEND,
+                    ("+-HTCIssueSend: transmit length : %d (%s) \n",
+                    pPacket->ActualLength + HTC_HDR_LENGTH,
+                    sync ? "SYNC" : "ASYNC" ));
+
+        /* send message to device */
+    status = DevSendPacket(&target->Device,
+                           pPacket,
+                           pPacket->ActualLength + HTC_HDR_LENGTH);
+
+    if (sync) {
+            /* use local sync variable.  If this was issued asynchronously, pPacket is no longer
+             * safe to access. */
+        pPacket->pBuffer += HTC_HDR_LENGTH;
+    }
+
+    /* if this request was asynchronous, the packet completion routine will be invoked by
+     * the device layer when the HIF layer completes the request */
+
+    return status;
+}
+
+/* try to send the current packet or a packet at the head of the TX queue,
+ * if there are no credits, the packet remains in the queue. */
+static void HTCTrySend(HTC_TARGET      *target,
+                       HTC_PACKET      *pPacketToSend,
+                       HTC_ENDPOINT_ID ep)
+{
+    HTC_PACKET   *pPacket;
+    HTC_ENDPOINT *pEndpoint;
+    int          creditsRequired;
+    A_UINT8      sendFlags;
+
+    AR_DEBUG_PRINTF(ATH_DEBUG_SEND,("+HTCTrySend (pPkt:0x%X)\n",(A_UINT32)pPacketToSend));
+
+    pEndpoint = &target->EndPoint[ep];
+
+    LOCK_HTC_TX(target);
+
+    if (pPacketToSend != NULL) {
+        /* caller supplied us a packet to queue to the tail of the HTC TX queue before
+         * we check the tx queue */
+        HTC_PACKET_ENQUEUE(&pEndpoint->TxQueue,pPacketToSend);
+        pEndpoint->CurrentTxQueueDepth++;
+    }
+
+        /* now drain the TX queue for transmission as long as we have enough
+         * credits */
+
+    while (1) {
+
+        if (HTC_QUEUE_EMPTY(&pEndpoint->TxQueue)) {
+                /* nothing in the queue */
+            break;
+        }
+
+        sendFlags = 0;
+
+            /* get packet at head, but don't remove it */
+        pPacket = HTC_GET_PKT_AT_HEAD(&pEndpoint->TxQueue);
+        AR_DEBUG_PRINTF(ATH_DEBUG_SEND,(" Got head packet:0x%X , Queue Depth: %d\n",
+                (A_UINT32)pPacket, pEndpoint->CurrentTxQueueDepth));
+
+            /* figure out how many credits this message requires */
+        creditsRequired  = pPacket->ActualLength + HTC_HDR_LENGTH;
+        creditsRequired += target->TargetCreditSize - 1;
+        creditsRequired /= target->TargetCreditSize;
+
+        AR_DEBUG_PRINTF(ATH_DEBUG_SEND,(" Creds Required:%d   Got:%d\n",
+                            creditsRequired, pEndpoint->CreditDist.TxCredits));
+
+        if (pEndpoint->CreditDist.TxCredits < creditsRequired) {
+
+            /* not enough credits */
+
+            if (pPacket->Endpoint == ENDPOINT_0) {
+                    /* leave it in the queue */
+                break;
+            }
+                /* invoke the registered distribution function only if this is not
+                 * endpoint 0, we let the driver layer provide more credits if it can.
+                 * We pass the credit distribution list starting at the endpoint in question
+                 * */
+
+                /* set how many credits we need  */
+            pEndpoint->CreditDist.TxCreditsSeek =
+                                    creditsRequired - pEndpoint->CreditDist.TxCredits;
+            DO_DISTRIBUTION(target,
+                            HTC_CREDIT_DIST_SEEK_CREDITS,
+                            "Seek Credits",
+                            &pEndpoint->CreditDist);
+
+            pEndpoint->CreditDist.TxCreditsSeek = 0;
+
+            if (pEndpoint->CreditDist.TxCredits < creditsRequired) {
+                    /* still not enough credits to send, leave packet in the queue */
+                AR_DEBUG_PRINTF(ATH_DEBUG_SEND,
+                    (" Not enough credits for ep %d leaving packet in queue..\n",
+                    pPacket->Endpoint));
+                break;
+            }
+
+        }
+
+        pEndpoint->CreditDist.TxCredits -= creditsRequired;
+        INC_HTC_EP_STAT(pEndpoint, TxCreditsConsummed, creditsRequired);
+
+            /* check if we need credits */
+        if (pEndpoint->CreditDist.TxCredits < pEndpoint->CreditDist.TxCreditsPerMaxMsg) {
+            sendFlags |= HTC_FLAGS_NEED_CREDIT_UPDATE;
+            INC_HTC_EP_STAT(pEndpoint, TxCreditLowIndications, 1);
+            AR_DEBUG_PRINTF(ATH_DEBUG_SEND,(" Host Needs Credits  \n"));
+        }
+
+            /* now we can fully dequeue */
+        pPacket = HTC_PACKET_DEQUEUE(&pEndpoint->TxQueue);
+        pEndpoint->CurrentTxQueueDepth--;
+
+        INC_HTC_EP_STAT(pEndpoint, TxIssued, 1);
+
+        UNLOCK_HTC_TX(target);
+
+        HTCIssueSend(target, pPacket, sendFlags);
+
+        LOCK_HTC_TX(target);
+
+        /* go back and check for more messages */
+    }
+
+    if (pEndpoint->CurrentTxQueueDepth >= pEndpoint->MaxTxQueueDepth) {
+        AR_DEBUG_PRINTF(ATH_DEBUG_SEND, (" Endpoint %d, TX queue is full, Depth:%d, Max:%d \n",
+                        ep, pEndpoint->CurrentTxQueueDepth, pEndpoint->MaxTxQueueDepth));
+        UNLOCK_HTC_TX(target);
+            /* queue is now full, let caller know */
+        if (pEndpoint->EpCallBacks.EpSendFull != NULL) {
+            AR_DEBUG_PRINTF(ATH_DEBUG_SEND, (" Calling driver's send full callback.... \n"));
+            pEndpoint->EpCallBacks.EpSendFull(pEndpoint->EpCallBacks.pContext, ep);
+        }
+    } else {
+        UNLOCK_HTC_TX(target);
+            /* queue is now available for new packet, let caller know */
+        if (pEndpoint->EpCallBacks.EpSendAvail)
+            pEndpoint->EpCallBacks.EpSendAvail(pEndpoint->EpCallBacks.pContext, ep);
+    }
+
+    AR_DEBUG_PRINTF(ATH_DEBUG_SEND,("-HTCTrySend:  \n"));
+}
+
+/* HTC API - HTCSendPkt */
+A_STATUS HTCSendPkt(HTC_HANDLE HTCHandle, HTC_PACKET *pPacket)
+{
+    HTC_TARGET      *target = GET_HTC_TARGET_FROM_HANDLE(HTCHandle);
+    HTC_ENDPOINT    *pEndpoint;
+    HTC_ENDPOINT_ID ep;
+    A_STATUS        status = A_OK;
+
+    AR_DEBUG_PRINTF(ATH_DEBUG_SEND,
+                    ("+HTCSendPkt: Enter endPointId: %d, buffer: 0x%X, length: %d \n",
+                    pPacket->Endpoint, (A_UINT32)pPacket->pBuffer, pPacket->ActualLength));
+
+    ep = pPacket->Endpoint;
+    AR_DEBUG_ASSERT(ep < ENDPOINT_MAX);
+    pEndpoint = &target->EndPoint[ep];
+
+    do {
+
+        if (HTC_STOPPING(target)) {
+            status = A_ECANCELED;
+            pPacket->Status = status;
+            DO_EP_TX_COMPLETION(pEndpoint,pPacket);
+            break;
+        }
+            /* everything sent through this interface is asynchronous */
+            /* fill in HTC completion routines */
+        pPacket->Completion = HTCSendPktCompletionHandler;
+        pPacket->pContext = target;
+
+        HTCTrySend(target, pPacket, ep);
+
+    } while (FALSE);
+
+    AR_DEBUG_PRINTF(ATH_DEBUG_SEND, ("-HTCSendPkt \n"));
+
+    return status;
+}
+
+
+/* check TX queues to drain because of credit distribution update */
+static INLINE void HTCCheckEndpointTxQueues(HTC_TARGET *target)
+{
+    HTC_ENDPOINT                *pEndpoint;
+    HTC_ENDPOINT_CREDIT_DIST    *pDistItem;
+
+    AR_DEBUG_PRINTF(ATH_DEBUG_SEND, ("+HTCCheckEndpointTxQueues \n"));
+    pDistItem = target->EpCreditDistributionListHead;
+
+        /* run through the credit distribution list to see
+         * if there are packets queued
+         * NOTE: no locks need to be taken since the distribution list
+         * is not dynamic (cannot be re-ordered) and we are not modifying any state */
+    while (pDistItem != NULL) {
+        pEndpoint = (HTC_ENDPOINT *)pDistItem->pHTCReserved;
+
+        if (pEndpoint->CurrentTxQueueDepth > 0) {
+            AR_DEBUG_PRINTF(ATH_DEBUG_SEND, (" Ep %d has %d credits and %d Packets in TX Queue \n",
+                    pDistItem->Endpoint, pEndpoint->CreditDist.TxCredits, pEndpoint->CurrentTxQueueDepth));
+                /* try to start the stalled queue, this list is ordered by priority.
+                 * Highest priority queue get's processed first, if there are credits available the
+                 * highest priority queue will get a chance to reclaim credits from lower priority
+                 * ones */
+            HTCTrySend(target, NULL, pDistItem->Endpoint);
+        }
+
+        pDistItem = pDistItem->pNext;
+    }
+
+    AR_DEBUG_PRINTF(ATH_DEBUG_SEND, ("-HTCCheckEndpointTxQueues \n"));
+}
+
+/* process credit reports and call distribution function */
+void HTCProcessCreditRpt(HTC_TARGET *target, HTC_CREDIT_REPORT *pRpt, int NumEntries, HTC_ENDPOINT_ID FromEndpoint)
+{
+    int             i;
+    HTC_ENDPOINT    *pEndpoint;
+    int             totalCredits = 0;
+    A_BOOL          doDist = FALSE;
+
+    AR_DEBUG_PRINTF(ATH_DEBUG_SEND, ("+HTCProcessCreditRpt, Credit Report Entries:%d \n", NumEntries));
+
+        /* lock out TX while we update credits */
+    LOCK_HTC_TX(target);
+
+    for (i = 0; i < NumEntries; i++, pRpt++) {
+        if (pRpt->EndpointID >= ENDPOINT_MAX) {
+            AR_DEBUG_ASSERT(FALSE);
+            break;
+        }
+
+        pEndpoint = &target->EndPoint[pRpt->EndpointID];
+
+        AR_DEBUG_PRINTF(ATH_DEBUG_SEND, ("  Endpoint %d got %d credits \n",
+                pRpt->EndpointID, pRpt->Credits));
+
+
+#ifdef HTC_EP_STAT_PROFILING
+
+        INC_HTC_EP_STAT(pEndpoint, TxCreditRpts, 1);
+        INC_HTC_EP_STAT(pEndpoint, TxCreditsReturned, pRpt->Credits);
+
+        if (FromEndpoint == pRpt->EndpointID) {
+                /* this credit report arrived on the same endpoint indicating it arrived in an RX
+                 * packet */
+            INC_HTC_EP_STAT(pEndpoint, TxCreditsFromRx, pRpt->Credits);
+            INC_HTC_EP_STAT(pEndpoint, TxCreditRptsFromRx, 1);
+        } else if (FromEndpoint == ENDPOINT_0) {
+                /* this credit arrived on endpoint 0 as a NULL message */
+            INC_HTC_EP_STAT(pEndpoint, TxCreditsFromEp0, pRpt->Credits);
+            INC_HTC_EP_STAT(pEndpoint, TxCreditRptsFromEp0, 1);
+        } else {
+                /* arrived on another endpoint */
+            INC_HTC_EP_STAT(pEndpoint, TxCreditsFromOther, pRpt->Credits);
+            INC_HTC_EP_STAT(pEndpoint, TxCreditRptsFromOther, 1);
+        }
+
+#endif
+
+        if (ENDPOINT_0 == pRpt->EndpointID) {
+                /* always give endpoint 0 credits back */
+            pEndpoint->CreditDist.TxCredits += pRpt->Credits;
+        } else {
+                /* for all other endpoints, update credits to distribute, the distribution function
+                 * will handle giving out credits back to the endpoints */
+            pEndpoint->CreditDist.TxCreditsToDist += pRpt->Credits;
+                /* flag that we have to do the distribution */
+            doDist = TRUE;
+        }
+
+        totalCredits += pRpt->Credits;
+    }
+
+    AR_DEBUG_PRINTF(ATH_DEBUG_SEND, ("  Report indicated %d credits to distribute \n", totalCredits));
+
+    if (doDist) {
+            /* this was a credit return based on a completed send operations
+             * note, this is done with the lock held */
+        DO_DISTRIBUTION(target,
+                        HTC_CREDIT_DIST_SEND_COMPLETE,
+                        "Send Complete",
+                        target->EpCreditDistributionListHead->pNext);
+    }
+
+    UNLOCK_HTC_TX(target);
+
+    if (totalCredits) {
+        HTCCheckEndpointTxQueues(target);
+    }
+
+    AR_DEBUG_PRINTF(ATH_DEBUG_SEND, ("-HTCProcessCreditRpt \n"));
+}
+
+/* flush endpoint TX queue */
+static void HTCFlushEndpointTX(HTC_TARGET *target, HTC_ENDPOINT *pEndpoint, HTC_TX_TAG Tag)
+{
+    HTC_PACKET          *pPacket;
+    HTC_PACKET_QUEUE    discardQueue;
+
+        /* initialize the discard queue */
+    INIT_HTC_PACKET_QUEUE(&discardQueue);
+
+    LOCK_HTC_TX(target);
+
+        /* interate from the front of the TX queue and flush out packets */
+    ITERATE_OVER_LIST_ALLOW_REMOVE(&pEndpoint->TxQueue, pPacket, HTC_PACKET, ListLink) {
+
+            /* check for removal */
+        if ((HTC_TX_PACKET_TAG_ALL == Tag) || (Tag == pPacket->PktInfo.AsTx.Tag)) {
+                /* remove from queue */
+            HTC_PACKET_REMOVE(pPacket);
+                /* add it to the discard pile */
+            HTC_PACKET_ENQUEUE(&discardQueue, pPacket);
+            pEndpoint->CurrentTxQueueDepth--;
+        }
+
+    } ITERATE_END;
+
+    UNLOCK_HTC_TX(target);
+
+        /* empty the discard queue */
+    while (1) {
+        pPacket = HTC_PACKET_DEQUEUE(&discardQueue);
+        if (NULL == pPacket) {
+            break;
+        }
+        pPacket->Status = A_ECANCELED;
+        AR_DEBUG_PRINTF(ATH_DEBUG_TRC, ("  Flushing TX packet:0x%X, length:%d, ep:%d tag:0x%X \n",
+                (A_UINT32)pPacket, pPacket->ActualLength, pPacket->Endpoint, pPacket->PktInfo.AsTx.Tag));
+        DO_EP_TX_COMPLETION(pEndpoint,pPacket);
+    }
+
+}
+
+void DumpCreditDist(HTC_ENDPOINT_CREDIT_DIST *pEPDist)
+{
+#ifdef DEBUG
+    HTC_ENDPOINT *pEndpoint = (HTC_ENDPOINT *)pEPDist->pHTCReserved;
+#endif
+
+    AR_DEBUG_PRINTF(ATH_DEBUG_ANY, ("--- EP : %d  ServiceID: 0x%X    --------------\n",
+                        pEPDist->Endpoint, pEPDist->ServiceID));
+    AR_DEBUG_PRINTF(ATH_DEBUG_ANY, (" this:0x%X next:0x%X prev:0x%X\n",
+                (A_UINT32)pEPDist, (A_UINT32)pEPDist->pNext, (A_UINT32)pEPDist->pPrev));
+    AR_DEBUG_PRINTF(ATH_DEBUG_ANY, (" DistFlags          : 0x%X \n", pEPDist->DistFlags));
+    AR_DEBUG_PRINTF(ATH_DEBUG_ANY, (" TxCreditsNorm      : %d \n", pEPDist->TxCreditsNorm));
+    AR_DEBUG_PRINTF(ATH_DEBUG_ANY, (" TxCreditsMin       : %d \n", pEPDist->TxCreditsMin));
+    AR_DEBUG_PRINTF(ATH_DEBUG_ANY, (" TxCredits          : %d \n", pEPDist->TxCredits));
+    AR_DEBUG_PRINTF(ATH_DEBUG_ANY, (" TxCreditsAssigned  : %d \n", pEPDist->TxCreditsAssigned));
+    AR_DEBUG_PRINTF(ATH_DEBUG_ANY, (" TxCreditsSeek      : %d \n", pEPDist->TxCreditsSeek));
+    AR_DEBUG_PRINTF(ATH_DEBUG_ANY, (" TxCreditSize       : %d \n", pEPDist->TxCreditSize));
+    AR_DEBUG_PRINTF(ATH_DEBUG_ANY, (" TxCreditsPerMaxMsg : %d \n", pEPDist->TxCreditsPerMaxMsg));
+    AR_DEBUG_PRINTF(ATH_DEBUG_ANY, (" TxCreditsToDist    : %d \n", pEPDist->TxCreditsToDist));
+    AR_DEBUG_PRINTF(ATH_DEBUG_ANY, (" TxQueueDepth       : %d \n", pEndpoint->CurrentTxQueueDepth));
+    AR_DEBUG_PRINTF(ATH_DEBUG_ANY, ("----------------------------------------------------\n"));
+}
+
+void DumpCreditDistStates(HTC_TARGET *target)
+{
+    HTC_ENDPOINT_CREDIT_DIST *pEPList = target->EpCreditDistributionListHead;
+
+    while (pEPList != NULL) {
+        DumpCreditDist(pEPList);
+        pEPList = pEPList->pNext;
+    }
+
+    if (target->DistributeCredits != NULL) {
+        DO_DISTRIBUTION(target,
+                        HTC_DUMP_CREDIT_STATE,
+                        "Dump State",
+                        NULL);
+    }
+}
+
+/* flush all send packets from all endpoint queues */
+void HTCFlushSendPkts(HTC_TARGET *target)
+{
+    HTC_ENDPOINT    *pEndpoint;
+    int             i;
+
+    DumpCreditDistStates(target);
+
+    for (i = ENDPOINT_0; i < ENDPOINT_MAX; i++) {
+        pEndpoint = &target->EndPoint[i];
+        if (pEndpoint->ServiceID == 0) {
+                /* not in use.. */
+            continue;
+        }
+        HTCFlushEndpointTX(target,pEndpoint,HTC_TX_PACKET_TAG_ALL);
+    }
+
+}
+
+/* HTC API to flush an endpoint's TX queue*/
+void HTCFlushEndpoint(HTC_HANDLE HTCHandle, HTC_ENDPOINT_ID Endpoint, HTC_TX_TAG Tag)
+{
+    HTC_TARGET      *target = GET_HTC_TARGET_FROM_HANDLE(HTCHandle);
+    HTC_ENDPOINT    *pEndpoint = &target->EndPoint[Endpoint];
+
+    if (pEndpoint->ServiceID == 0) {
+        AR_DEBUG_ASSERT(FALSE);
+        /* not in use.. */
+        return;
+    }
+
+    HTCFlushEndpointTX(target, pEndpoint, Tag);
+}
+
+/* HTC API to indicate activity to the credit distribution function */
+void HTCIndicateActivityChange(HTC_HANDLE      HTCHandle,
+                               HTC_ENDPOINT_ID Endpoint,
+                               A_BOOL          Active)
+{
+    HTC_TARGET      *target = GET_HTC_TARGET_FROM_HANDLE(HTCHandle);
+    HTC_ENDPOINT    *pEndpoint = &target->EndPoint[Endpoint];
+    A_BOOL          doDist = FALSE;
+
+    if (pEndpoint->ServiceID == 0) {
+        AR_DEBUG_ASSERT(FALSE);
+        /* not in use.. */
+        return;
+    }
+
+    LOCK_HTC_TX(target);
+
+    if (Active) {
+        if (!(pEndpoint->CreditDist.DistFlags & HTC_EP_ACTIVE)) {
+                /* mark active now */
+            pEndpoint->CreditDist.DistFlags |= HTC_EP_ACTIVE;
+            doDist = TRUE;
+        }
+    } else {
+        if (pEndpoint->CreditDist.DistFlags & HTC_EP_ACTIVE) {
+                /* mark inactive now */
+            pEndpoint->CreditDist.DistFlags &= ~HTC_EP_ACTIVE;
+            doDist = TRUE;
+        }
+    }
+
+    if (doDist) {
+        /* do distribution again based on activity change
+         * note, this is done with the lock held */
+        DO_DISTRIBUTION(target,
+                        HTC_CREDIT_DIST_ACTIVITY_CHANGE,
+                        "Activity Change",
+                        target->EpCreditDistributionListHead->pNext);
+    }
+
+    UNLOCK_HTC_TX(target);
+
+}
diff --git a/target/linux/s3c24xx/files-2.6.30/drivers/ar6000/htc/htc_services.c b/target/linux/s3c24xx/files-2.6.30/drivers/ar6000/htc/htc_services.c
new file mode 100644
index 000000000..e5d50d16d
--- /dev/null
+++ b/target/linux/s3c24xx/files-2.6.30/drivers/ar6000/htc/htc_services.c
@@ -0,0 +1,403 @@
+/*
+ *
+ * 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"
+
+void HTCControlTxComplete(void *Context, HTC_PACKET *pPacket)
+{
+        /* not implemented
+         * we do not send control TX frames during normal runtime, only during setup  */
+    AR_DEBUG_ASSERT(FALSE);
+}
+
+    /* callback when a control message arrives on this endpoint */
+void HTCControlRecv(void *Context, HTC_PACKET *pPacket)
+{
+    AR_DEBUG_ASSERT(pPacket->Endpoint == ENDPOINT_0);
+
+        /* the only control messages we are expecting are NULL messages (credit resports), which should
+         * never get here */
+    AR_DEBUG_PRINTF(ATH_DEBUG_ERR,
+                    ("HTCControlRecv, got message with length:%d \n",
+                    pPacket->ActualLength + HTC_HDR_LENGTH));
+
+        /* dump header and message */
+    DebugDumpBytes(pPacket->pBuffer - HTC_HDR_LENGTH,
+                   pPacket->ActualLength + HTC_HDR_LENGTH,
+                   "Unexpected ENDPOINT 0 Message");
+
+    HTC_RECYCLE_RX_PKT((HTC_TARGET*)Context,pPacket);
+}
+
+A_STATUS HTCSendSetupComplete(HTC_TARGET *target)
+{
+    HTC_PACKET             *pSendPacket = NULL;
+    A_STATUS                status;
+    HTC_SETUP_COMPLETE_MSG *pSetupComplete;
+
+    do {
+           /* allocate a packet to send to the target */
+        pSendPacket = HTC_ALLOC_CONTROL_TX(target);
+
+        if (NULL == pSendPacket) {
+            status = A_NO_MEMORY;
+            break;
+        }
+
+            /* assemble setup complete message */
+        pSetupComplete = (HTC_SETUP_COMPLETE_MSG *)pSendPacket->pBuffer;
+        A_MEMZERO(pSetupComplete,sizeof(HTC_SETUP_COMPLETE_MSG));
+        pSetupComplete->MessageID = HTC_MSG_SETUP_COMPLETE_ID;
+
+        SET_HTC_PACKET_INFO_TX(pSendPacket,
+                               NULL,
+                               (A_UINT8 *)pSetupComplete,
+                               sizeof(HTC_SETUP_COMPLETE_MSG),
+                               ENDPOINT_0,
+                               HTC_SERVICE_TX_PACKET_TAG);
+
+            /* we want synchronous operation */
+        pSendPacket->Completion = NULL;
+            /* send the message */
+        status = HTCIssueSend(target,pSendPacket,0);
+
+    } while (FALSE);
+
+    if (pSendPacket != NULL) {
+        HTC_FREE_CONTROL_TX(target,pSendPacket);
+    }
+
+    return status;
+}
+
+
+A_STATUS HTCConnectService(HTC_HANDLE               HTCHandle,
+                           HTC_SERVICE_CONNECT_REQ  *pConnectReq,
+                           HTC_SERVICE_CONNECT_RESP *pConnectResp)
+{
+    HTC_TARGET *target = GET_HTC_TARGET_FROM_HANDLE(HTCHandle);
+    A_STATUS                            status = A_OK;
+    HTC_PACKET                          *pRecvPacket = NULL;
+    HTC_PACKET                          *pSendPacket = NULL;
+    HTC_CONNECT_SERVICE_RESPONSE_MSG    *pResponseMsg;
+    HTC_CONNECT_SERVICE_MSG             *pConnectMsg;
+    HTC_ENDPOINT_ID                     assignedEndpoint = ENDPOINT_MAX;
+    HTC_ENDPOINT                        *pEndpoint;
+    int                                 maxMsgSize = 0;
+
+    AR_DEBUG_PRINTF(ATH_DEBUG_TRC, ("+HTCConnectService, target:0x%X SvcID:0x%X \n",
+               (A_UINT32)target, pConnectReq->ServiceID));
+
+    do {
+
+        AR_DEBUG_ASSERT(pConnectReq->ServiceID != 0);
+
+        if (HTC_CTRL_RSVD_SVC == pConnectReq->ServiceID) {
+                /* special case for pseudo control service */
+            assignedEndpoint = ENDPOINT_0;
+            maxMsgSize = HTC_MAX_CONTROL_MESSAGE_LENGTH;
+        } else {
+                /* allocate a packet to send to the target */
+            pSendPacket = HTC_ALLOC_CONTROL_TX(target);
+
+            if (NULL == pSendPacket) {
+                AR_DEBUG_ASSERT(FALSE);
+                status = A_NO_MEMORY;
+                break;
+            }
+                /* assemble connect service message */
+            pConnectMsg = (HTC_CONNECT_SERVICE_MSG *)pSendPacket->pBuffer;
+            AR_DEBUG_ASSERT(pConnectMsg != NULL);
+            A_MEMZERO(pConnectMsg,sizeof(HTC_CONNECT_SERVICE_MSG));
+            pConnectMsg->MessageID = HTC_MSG_CONNECT_SERVICE_ID;
+            pConnectMsg->ServiceID = pConnectReq->ServiceID;
+            pConnectMsg->ConnectionFlags = pConnectReq->ConnectionFlags;
+                /* check caller if it wants to transfer meta data */
+            if ((pConnectReq->pMetaData != NULL) &&
+                (pConnectReq->MetaDataLength <= HTC_SERVICE_META_DATA_MAX_LENGTH)) {
+                    /* copy meta data into message buffer (after header ) */
+                A_MEMCPY((A_UINT8 *)pConnectMsg + sizeof(HTC_CONNECT_SERVICE_MSG),
+                         pConnectReq->pMetaData,
+                         pConnectReq->MetaDataLength);
+                pConnectMsg->ServiceMetaLength = pConnectReq->MetaDataLength;
+            }
+
+            SET_HTC_PACKET_INFO_TX(pSendPacket,
+                                   NULL,
+                                   (A_UINT8 *)pConnectMsg,
+                                   sizeof(HTC_CONNECT_SERVICE_MSG) + pConnectMsg->ServiceMetaLength,
+                                   ENDPOINT_0,
+                                   HTC_SERVICE_TX_PACKET_TAG);
+
+                /* we want synchronous operation */
+            pSendPacket->Completion = NULL;
+
+            status = HTCIssueSend(target,pSendPacket,0);
+
+            if (A_FAILED(status)) {
+                break;
+            }
+
+                /* wait for response */
+            status = HTCWaitforControlMessage(target, &pRecvPacket);
+
+            if (A_FAILED(status)) {
+                break;
+            }
+                /* we controlled the buffer creation so it has to be properly aligned */
+            pResponseMsg = (HTC_CONNECT_SERVICE_RESPONSE_MSG *)pRecvPacket->pBuffer;
+
+            if ((pResponseMsg->MessageID != HTC_MSG_CONNECT_SERVICE_RESPONSE_ID) ||
+                (pRecvPacket->ActualLength < sizeof(HTC_CONNECT_SERVICE_RESPONSE_MSG))) {
+                    /* this message is not valid */
+                AR_DEBUG_ASSERT(FALSE);
+                status = A_EPROTO;
+                break;
+            }
+
+            pConnectResp->ConnectRespCode = pResponseMsg->Status;
+                /* check response status */
+            if (pResponseMsg->Status != HTC_SERVICE_SUCCESS) {
+                AR_DEBUG_PRINTF(ATH_DEBUG_ERR,
+                    (" Target failed service 0x%X connect request (status:%d)\n",
+                                pResponseMsg->ServiceID, pResponseMsg->Status));
+                status = A_EPROTO;
+                break;
+            }
+
+            assignedEndpoint = pResponseMsg->EndpointID;
+            maxMsgSize = pResponseMsg->MaxMsgSize;
+
+            if ((pConnectResp->pMetaData != NULL) &&
+                (pResponseMsg->ServiceMetaLength > 0) &&
+                (pResponseMsg->ServiceMetaLength <= HTC_SERVICE_META_DATA_MAX_LENGTH)) {
+                    /* caller supplied a buffer and the target responded with data */
+                int copyLength = min((int)pConnectResp->BufferLength, (int)pResponseMsg->ServiceMetaLength);
+                    /* copy the meta data */
+                A_MEMCPY(pConnectResp->pMetaData,
+                         ((A_UINT8 *)pResponseMsg) + sizeof(HTC_CONNECT_SERVICE_RESPONSE_MSG),
+                         copyLength);
+                pConnectResp->ActualLength = copyLength;
+            }
+
+        }
+
+            /* the rest of these are parameter checks so set the error status */
+        status = A_EPROTO;
+
+        if (assignedEndpoint >= ENDPOINT_MAX) {
+            AR_DEBUG_ASSERT(FALSE);
+            break;
+        }
+
+        if (0 == maxMsgSize) {
+            AR_DEBUG_ASSERT(FALSE);
+            break;
+        }
+
+        pEndpoint = &target->EndPoint[assignedEndpoint];
+
+        if (pEndpoint->ServiceID != 0) {
+            /* endpoint already in use! */
+            AR_DEBUG_ASSERT(FALSE);
+            break;
+        }
+
+            /* return assigned endpoint to caller */
+        pConnectResp->Endpoint = assignedEndpoint;
+        pConnectResp->MaxMsgLength = maxMsgSize;
+
+            /* setup the endpoint */
+        pEndpoint->ServiceID = pConnectReq->ServiceID; /* this marks the endpoint in use */
+        pEndpoint->MaxTxQueueDepth = pConnectReq->MaxSendQueueDepth;
+        pEndpoint->MaxMsgLength = maxMsgSize;
+            /* copy all the callbacks */
+        pEndpoint->EpCallBacks = pConnectReq->EpCallbacks;
+        INIT_HTC_PACKET_QUEUE(&pEndpoint->RxBuffers);
+        INIT_HTC_PACKET_QUEUE(&pEndpoint->TxQueue);
+            /* set the credit distribution info for this endpoint, this information is
+             * passed back to the credit distribution callback function */
+        pEndpoint->CreditDist.ServiceID = pConnectReq->ServiceID;
+        pEndpoint->CreditDist.pHTCReserved = pEndpoint;
+        pEndpoint->CreditDist.Endpoint = assignedEndpoint;
+        pEndpoint->CreditDist.TxCreditSize = target->TargetCreditSize;
+        pEndpoint->CreditDist.TxCreditsPerMaxMsg = maxMsgSize / target->TargetCreditSize;
+
+        if (0 == pEndpoint->CreditDist.TxCreditsPerMaxMsg) {
+            pEndpoint->CreditDist.TxCreditsPerMaxMsg = 1;
+        }
+
+        status = A_OK;
+
+    } while (FALSE);
+
+    if (pSendPacket != NULL) {
+        HTC_FREE_CONTROL_TX(target,pSendPacket);
+    }
+
+    if (pRecvPacket != NULL) {
+        HTC_FREE_CONTROL_RX(target,pRecvPacket);
+    }
+
+    AR_DEBUG_PRINTF(ATH_DEBUG_TRC, ("-HTCConnectService \n"));
+
+    return status;
+}
+
+static void AddToEndpointDistList(HTC_TARGET *target, HTC_ENDPOINT_CREDIT_DIST *pEpDist)
+{
+    HTC_ENDPOINT_CREDIT_DIST *pCurEntry,*pLastEntry;
+
+    if (NULL == target->EpCreditDistributionListHead) {
+        target->EpCreditDistributionListHead = pEpDist;
+        pEpDist->pNext = NULL;
+        pEpDist->pPrev = NULL;
+        return;
+    }
+
+        /* queue to the end of the list, this does not have to be very
+         * fast since this list is built at startup time */
+    pCurEntry = target->EpCreditDistributionListHead;
+
+    while (pCurEntry) {
+        pLastEntry = pCurEntry;
+        pCurEntry = pCurEntry->pNext;
+    }
+
+    pLastEntry->pNext = pEpDist;
+    pEpDist->pPrev = pLastEntry;
+    pEpDist->pNext = NULL;
+}
+
+
+
+/* default credit init callback */
+static void HTCDefaultCreditInit(void                     *Context,
+                                 HTC_ENDPOINT_CREDIT_DIST *pEPList,
+                                 int                      TotalCredits)
+{
+    HTC_ENDPOINT_CREDIT_DIST *pCurEpDist;
+    int                      totalEps = 0;
+    int                      creditsPerEndpoint;
+
+    pCurEpDist = pEPList;
+        /* first run through the list and figure out how many endpoints we are dealing with */
+    while (pCurEpDist != NULL) {
+        pCurEpDist = pCurEpDist->pNext;
+        totalEps++;
+    }
+
+        /* even distribution */
+    creditsPerEndpoint = TotalCredits/totalEps;
+
+    pCurEpDist = pEPList;
+        /* run through the list and set minimum and normal credits and
+         * provide the endpoint with some credits to start */
+    while (pCurEpDist != NULL) {
+
+        if (creditsPerEndpoint < pCurEpDist->TxCreditsPerMaxMsg) {
+                /* too many endpoints and not enough credits */
+            AR_DEBUG_ASSERT(FALSE);
+            break;
+        }
+            /* our minimum is set for at least 1 max message */
+        pCurEpDist->TxCreditsMin = pCurEpDist->TxCreditsPerMaxMsg;
+            /* this value is ignored by our credit alg, since we do
+             * not dynamically adjust credits, this is the policy of
+             * the "default" credit distribution, something simple and easy */
+        pCurEpDist->TxCreditsNorm = 0xFFFF;
+            /* give the endpoint minimum credits */
+        pCurEpDist->TxCredits = creditsPerEndpoint;
+        pCurEpDist->TxCreditsAssigned = creditsPerEndpoint;
+        pCurEpDist = pCurEpDist->pNext;
+    }
+
+}
+
+/* default credit distribution callback, NOTE, this callback holds the TX lock */
+void HTCDefaultCreditDist(void                     *Context,
+                          HTC_ENDPOINT_CREDIT_DIST *pEPDistList,
+                          HTC_CREDIT_DIST_REASON   Reason)
+{
+    HTC_ENDPOINT_CREDIT_DIST *pCurEpDist;
+
+    if (Reason == HTC_CREDIT_DIST_SEND_COMPLETE) {
+        pCurEpDist = pEPDistList;
+            /* simple distribution */
+        while (pCurEpDist != NULL) {
+            if (pCurEpDist->TxCreditsToDist > 0) {
+                    /* just give the endpoint back the credits */
+                pCurEpDist->TxCredits += pCurEpDist->TxCreditsToDist;
+                pCurEpDist->TxCreditsToDist = 0;
+            }
+            pCurEpDist = pCurEpDist->pNext;
+        }
+    }
+
+    /* note we do not need to handle the other reason codes as this is a very
+     * simple distribution scheme, no need to seek for more credits or handle inactivity */
+}
+
+void HTCSetCreditDistribution(HTC_HANDLE               HTCHandle,
+                              void                     *pCreditDistContext,
+                              HTC_CREDIT_DIST_CALLBACK CreditDistFunc,
+                              HTC_CREDIT_INIT_CALLBACK CreditInitFunc,
+                              HTC_SERVICE_ID           ServicePriorityOrder[],
+                              int                      ListLength)
+{
+    HTC_TARGET *target = GET_HTC_TARGET_FROM_HANDLE(HTCHandle);
+    int i;
+    int ep;
+
+    if (CreditInitFunc != NULL) {
+            /* caller has supplied their own distribution functions */
+        target->InitCredits = CreditInitFunc;
+        AR_DEBUG_ASSERT(CreditDistFunc != NULL);
+        target->DistributeCredits = CreditDistFunc;
+        target->pCredDistContext = pCreditDistContext;
+    } else {
+        /* caller wants HTC to do distribution */
+        /* if caller wants service to handle distributions then
+         * it must set both of these to NULL! */
+        AR_DEBUG_ASSERT(CreditDistFunc == NULL);
+        target->InitCredits = HTCDefaultCreditInit;
+        target->DistributeCredits = HTCDefaultCreditDist;
+        target->pCredDistContext = target;
+    }
+
+        /* always add HTC control endpoint first, we only expose the list after the
+         * first one, this is added for TX queue checking */
+    AddToEndpointDistList(target, &target->EndPoint[ENDPOINT_0].CreditDist);
+
+        /* build the list of credit distribution structures in priority order
+         * supplied by the caller, these will follow endpoint 0 */
+    for (i = 0; i < ListLength; i++) {
+            /* match services with endpoints and add the endpoints to the distribution list
+             * in FIFO order */
+        for (ep = ENDPOINT_1; ep < ENDPOINT_MAX; ep++) {
+            if (target->EndPoint[ep].ServiceID == ServicePriorityOrder[i]) {
+                    /* queue this one to the list */
+                AddToEndpointDistList(target, &target->EndPoint[ep].CreditDist);
+                break;
+            }
+        }
+        AR_DEBUG_ASSERT(ep < ENDPOINT_MAX);
+    }
+
+}