diff options
Diffstat (limited to 'drivers/staging/ath6kl/os/linux/hci_bridge.c')
| -rw-r--r-- | drivers/staging/ath6kl/os/linux/hci_bridge.c | 1144 |
1 files changed, 1144 insertions, 0 deletions
diff --git a/drivers/staging/ath6kl/os/linux/hci_bridge.c b/drivers/staging/ath6kl/os/linux/hci_bridge.c new file mode 100644 index 000000000000..5cdc3b85a6f6 --- /dev/null +++ b/drivers/staging/ath6kl/os/linux/hci_bridge.c @@ -0,0 +1,1144 @@ +//------------------------------------------------------------------------------ +// Copyright (c) 2009-2010 Atheros Corporation. All rights reserved. +// +// +// Permission to use, copy, modify, and/or distribute this software for any +// purpose with or without fee is hereby granted, provided that the above +// copyright notice and this permission notice appear in all copies. +// +// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES +// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF +// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR +// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES +// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN +// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF +// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. +// +// +//------------------------------------------------------------------------------ +//============================================================================== +// HCI bridge implementation +// +// Author(s): ="Atheros" +//============================================================================== + +#ifdef EXPORT_HCI_BRIDGE_INTERFACE +#include <linux/etherdevice.h> +#include <a_config.h> +#include <athdefs.h> +#include "a_types.h" +#include "a_osapi.h" +#include "htc_api.h" +#include "wmi.h" +#include "a_drv.h" +#include "hif.h" +#include "common_drv.h" +#include "a_debug.h" +#define ATH_DEBUG_HCI_BRIDGE ATH_DEBUG_MAKE_MODULE_MASK(6) +#define ATH_DEBUG_HCI_RECV ATH_DEBUG_MAKE_MODULE_MASK(7) +#define ATH_DEBUG_HCI_SEND ATH_DEBUG_MAKE_MODULE_MASK(8) +#define ATH_DEBUG_HCI_DUMP ATH_DEBUG_MAKE_MODULE_MASK(9) +#else +#include "ar6000_drv.h" +#endif /* EXPORT_HCI_BRIDGE_INTERFACE */ + +#ifdef ATH_AR6K_ENABLE_GMBOX +#ifdef EXPORT_HCI_BRIDGE_INTERFACE +#include "export_hci_transport.h" +#else +#include "hci_transport_api.h" +#endif +#include "epping_test.h" +#include "gmboxif.h" +#include "ar3kconfig.h" +#include <net/bluetooth/bluetooth.h> +#include <net/bluetooth/hci_core.h> + + /* only build on newer kernels which have BT configured */ +#if defined(CONFIG_BT_MODULE) || defined(CONFIG_BT) +#define CONFIG_BLUEZ_HCI_BRIDGE +#endif + +#ifdef EXPORT_HCI_BRIDGE_INTERFACE +unsigned int ar3khcibaud = 0; +unsigned int hciuartscale = 0; +unsigned int hciuartstep = 0; + +module_param(ar3khcibaud, int, 0644); +module_param(hciuartscale, int, 0644); +module_param(hciuartstep, int, 0644); +#else +extern unsigned int ar3khcibaud; +extern unsigned int hciuartscale; +extern unsigned int hciuartstep; +#endif /* EXPORT_HCI_BRIDGE_INTERFACE */ + +typedef struct { + void *pHCIDev; /* HCI bridge device */ + HCI_TRANSPORT_PROPERTIES HCIProps; /* HCI bridge props */ + struct hci_dev *pBtStackHCIDev; /* BT Stack HCI dev */ + A_BOOL HciNormalMode; /* Actual HCI mode enabled (non-TEST)*/ + A_BOOL HciRegistered; /* HCI device registered with stack */ + HTC_PACKET_QUEUE HTCPacketStructHead; + A_UINT8 *pHTCStructAlloc; + spinlock_t BridgeLock; +#ifdef EXPORT_HCI_BRIDGE_INTERFACE + HCI_TRANSPORT_MISC_HANDLES HCITransHdl; +#else + AR_SOFTC_T *ar; +#endif /* EXPORT_HCI_BRIDGE_INTERFACE */ +} AR6K_HCI_BRIDGE_INFO; + +#define MAX_ACL_RECV_BUFS 16 +#define MAX_EVT_RECV_BUFS 8 +#define MAX_HCI_WRITE_QUEUE_DEPTH 32 +#define MAX_ACL_RECV_LENGTH 1200 +#define MAX_EVT_RECV_LENGTH 257 +#define TX_PACKET_RSV_OFFSET 32 +#define NUM_HTC_PACKET_STRUCTS ((MAX_ACL_RECV_BUFS + MAX_EVT_RECV_BUFS + MAX_HCI_WRITE_QUEUE_DEPTH) * 2) + +#define HCI_GET_OP_CODE(p) (((A_UINT16)((p)[1])) << 8) | ((A_UINT16)((p)[0])) + +extern unsigned int setupbtdev; +AR3K_CONFIG_INFO ar3kconfig; + +#ifdef EXPORT_HCI_BRIDGE_INTERFACE +AR6K_HCI_BRIDGE_INFO *g_pHcidevInfo; +#endif + +static A_STATUS bt_setup_hci(AR6K_HCI_BRIDGE_INFO *pHcidevInfo); +static void bt_cleanup_hci(AR6K_HCI_BRIDGE_INFO *pHcidevInfo); +static A_STATUS bt_register_hci(AR6K_HCI_BRIDGE_INFO *pHcidevInfo); +static A_BOOL bt_indicate_recv(AR6K_HCI_BRIDGE_INFO *pHcidevInfo, + HCI_TRANSPORT_PACKET_TYPE Type, + struct sk_buff *skb); +static struct sk_buff *bt_alloc_buffer(AR6K_HCI_BRIDGE_INFO *pHcidevInfo, int Length); +static void bt_free_buffer(AR6K_HCI_BRIDGE_INFO *pHcidevInfo, struct sk_buff *skb); + +#ifdef EXPORT_HCI_BRIDGE_INTERFACE +A_STATUS ar6000_setup_hci(void *ar); +void ar6000_cleanup_hci(void *ar); +A_STATUS hci_test_send(void *ar, struct sk_buff *skb); +#else +A_STATUS ar6000_setup_hci(AR_SOFTC_T *ar); +void ar6000_cleanup_hci(AR_SOFTC_T *ar); +/* HCI bridge testing */ +A_STATUS hci_test_send(AR_SOFTC_T *ar, struct sk_buff *skb); +#endif /* EXPORT_HCI_BRIDGE_INTERFACE */ + +#define LOCK_BRIDGE(dev) spin_lock_bh(&(dev)->BridgeLock) +#define UNLOCK_BRIDGE(dev) spin_unlock_bh(&(dev)->BridgeLock) + +static inline void FreeBtOsBuf(AR6K_HCI_BRIDGE_INFO *pHcidevInfo, void *osbuf) +{ + if (pHcidevInfo->HciNormalMode) { + bt_free_buffer(pHcidevInfo, (struct sk_buff *)osbuf); + } else { + /* in test mode, these are just ordinary netbuf allocations */ + A_NETBUF_FREE(osbuf); + } +} + +static void FreeHTCStruct(AR6K_HCI_BRIDGE_INFO *pHcidevInfo, HTC_PACKET *pPacket) +{ + LOCK_BRIDGE(pHcidevInfo); + HTC_PACKET_ENQUEUE(&pHcidevInfo->HTCPacketStructHead,pPacket); + UNLOCK_BRIDGE(pHcidevInfo); +} + +static HTC_PACKET * AllocHTCStruct(AR6K_HCI_BRIDGE_INFO *pHcidevInfo) +{ + HTC_PACKET *pPacket = NULL; + LOCK_BRIDGE(pHcidevInfo); + pPacket = HTC_PACKET_DEQUEUE(&pHcidevInfo->HTCPacketStructHead); + UNLOCK_BRIDGE(pHcidevInfo); + return pPacket; +} + +#define BLOCK_ROUND_UP_PWR2(x, align) (((int) (x) + ((align)-1)) & ~((align)-1)) + +static void RefillRecvBuffers(AR6K_HCI_BRIDGE_INFO *pHcidevInfo, + HCI_TRANSPORT_PACKET_TYPE Type, + int NumBuffers) +{ + int length, i; + void *osBuf = NULL; + HTC_PACKET_QUEUE queue; + HTC_PACKET *pPacket; + + INIT_HTC_PACKET_QUEUE(&queue); + + if (Type == HCI_ACL_TYPE) { + if (pHcidevInfo->HciNormalMode) { + length = HCI_MAX_FRAME_SIZE; + } else { + length = MAX_ACL_RECV_LENGTH; + } + } else { + length = MAX_EVT_RECV_LENGTH; + } + + /* add on transport head and tail room */ + length += pHcidevInfo->HCIProps.HeadRoom + pHcidevInfo->HCIProps.TailRoom; + /* round up to the required I/O padding */ + length = BLOCK_ROUND_UP_PWR2(length,pHcidevInfo->HCIProps.IOBlockPad); + + for (i = 0; i < NumBuffers; i++) { + + if (pHcidevInfo->HciNormalMode) { + osBuf = bt_alloc_buffer(pHcidevInfo,length); + } else { + osBuf = A_NETBUF_ALLOC(length); + } + + if (NULL == osBuf) { + break; + } + + pPacket = AllocHTCStruct(pHcidevInfo); + if (NULL == pPacket) { + FreeBtOsBuf(pHcidevInfo,osBuf); + AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("Failed to alloc HTC struct \n")); + break; + } + + SET_HTC_PACKET_INFO_RX_REFILL(pPacket,osBuf,A_NETBUF_DATA(osBuf),length,Type); + /* add to queue */ + HTC_PACKET_ENQUEUE(&queue,pPacket); + } + + if (i > 0) { + HCI_TransportAddReceivePkts(pHcidevInfo->pHCIDev, &queue); + } +} + +#define HOST_INTEREST_ITEM_ADDRESS(ar, item) \ + (((ar)->arTargetType == TARGET_TYPE_AR6002) ? AR6002_HOST_INTEREST_ITEM_ADDRESS(item) : \ + (((ar)->arTargetType == TARGET_TYPE_AR6003) ? AR6003_HOST_INTEREST_ITEM_ADDRESS(item) : 0)) +static A_STATUS ar6000_hci_transport_ready(HCI_TRANSPORT_HANDLE HCIHandle, + HCI_TRANSPORT_PROPERTIES *pProps, + void *pContext) +{ + AR6K_HCI_BRIDGE_INFO *pHcidevInfo = (AR6K_HCI_BRIDGE_INFO *)pContext; + A_STATUS status; + A_UINT32 address, hci_uart_pwr_mgmt_params; +// AR3K_CONFIG_INFO ar3kconfig; + + pHcidevInfo->pHCIDev = HCIHandle; + + A_MEMCPY(&pHcidevInfo->HCIProps,pProps,sizeof(*pProps)); + + AR_DEBUG_PRINTF(ATH_DEBUG_HCI_BRIDGE,("HCI ready (hci:0x%lX, headroom:%d, tailroom:%d blockpad:%d) \n", + (unsigned long)HCIHandle, + pHcidevInfo->HCIProps.HeadRoom, + pHcidevInfo->HCIProps.TailRoom, + pHcidevInfo->HCIProps.IOBlockPad)); + +#ifdef EXPORT_HCI_BRIDGE_INTERFACE + A_ASSERT((pProps->HeadRoom + pProps->TailRoom) <= (struct net_device *)(pHcidevInfo->HCITransHdl.netDevice)->hard_header_len); +#else + A_ASSERT((pProps->HeadRoom + pProps->TailRoom) <= pHcidevInfo->ar->arNetDev->hard_header_len); +#endif + + /* provide buffers */ + RefillRecvBuffers(pHcidevInfo, HCI_ACL_TYPE, MAX_ACL_RECV_BUFS); + RefillRecvBuffers(pHcidevInfo, HCI_EVENT_TYPE, MAX_EVT_RECV_BUFS); + + do { + /* start transport */ + status = HCI_TransportStart(pHcidevInfo->pHCIDev); + + if (A_FAILED(status)) { + break; + } + + if (!pHcidevInfo->HciNormalMode) { + /* in test mode, no need to go any further */ + break; + } + + // The delay is required when AR6K is driving the BT reset line + // where time is needed after the BT chip is out of reset (HCI_TransportStart) + // and before the first HCI command is issued (AR3KConfigure) + // FIXME + // The delay should be configurable and be only applied when AR6K driving the BT + // reset line. This could be done by some module parameter or based on some HW config + // info. For now apply 100ms delay blindly + A_MDELAY(100); + + A_MEMZERO(&ar3kconfig,sizeof(ar3kconfig)); + ar3kconfig.pHCIDev = pHcidevInfo->pHCIDev; + ar3kconfig.pHCIProps = &pHcidevInfo->HCIProps; +#ifdef EXPORT_HCI_BRIDGE_INTERFACE + ar3kconfig.pHIFDevice = (HIF_DEVICE *)(pHcidevInfo->HCITransHdl.hifDevice); +#else + ar3kconfig.pHIFDevice = pHcidevInfo->ar->arHifDevice; +#endif + ar3kconfig.pBtStackHCIDev = pHcidevInfo->pBtStackHCIDev; + + if (ar3khcibaud != 0) { + /* user wants ar3k baud rate change */ + ar3kconfig.Flags |= AR3K_CONFIG_FLAG_SET_AR3K_BAUD; + ar3kconfig.Flags |= AR3K_CONFIG_FLAG_AR3K_BAUD_CHANGE_DELAY; + ar3kconfig.AR3KBaudRate = ar3khcibaud; + } + + if ((hciuartscale != 0) || (hciuartstep != 0)) { + /* user wants to tune HCI bridge UART scale/step values */ + ar3kconfig.AR6KScale = (A_UINT16)hciuartscale; + ar3kconfig.AR6KStep = (A_UINT16)hciuartstep; + ar3kconfig.Flags |= AR3K_CONFIG_FLAG_SET_AR6K_SCALE_STEP; + } + + /* Fetch the address of the hi_hci_uart_pwr_mgmt_params instance in the host interest area */ + address = TARG_VTOP(pHcidevInfo->ar->arTargetType, + HOST_INTEREST_ITEM_ADDRESS(pHcidevInfo->ar, hi_hci_uart_pwr_mgmt_params)); + status = ar6000_ReadRegDiag(pHcidevInfo->ar->arHifDevice, &address, &hci_uart_pwr_mgmt_params); + if (A_OK == status) { + ar3kconfig.PwrMgmtEnabled = (hci_uart_pwr_mgmt_params & 0x1); + ar3kconfig.IdleTimeout = (hci_uart_pwr_mgmt_params & 0xFFFF0000) >> 16; + ar3kconfig.WakeupTimeout = (hci_uart_pwr_mgmt_params & 0xFF00) >> 8; + } else { + AR_DEBUG_PRINTF(ATH_DEBUG_ERR, ("HCI Bridge: failed to read hci_uart_pwr_mgmt_params! \n")); + } + /* configure the AR3K device */ + memcpy(ar3kconfig.bdaddr,pHcidevInfo->ar->bdaddr,6); + status = AR3KConfigure(&ar3kconfig); + if (A_FAILED(status)) { + break; + } + + /* Make sure both AR6K and AR3K have power management enabled */ + if (ar3kconfig.PwrMgmtEnabled) { + status = HCI_TransportEnablePowerMgmt(pHcidevInfo->pHCIDev, TRUE); + if (A_FAILED(status)) { + AR_DEBUG_PRINTF(ATH_DEBUG_ERR, ("HCI Bridge: failed to enable TLPM for AR6K! \n")); + } + } + + status = bt_register_hci(pHcidevInfo); + + } while (FALSE); + + return status; +} + +static void ar6000_hci_transport_failure(void *pContext, A_STATUS Status) +{ + AR6K_HCI_BRIDGE_INFO *pHcidevInfo = (AR6K_HCI_BRIDGE_INFO *)pContext; + + AR_DEBUG_PRINTF(ATH_DEBUG_ERR, ("HCI Bridge: transport failure! \n")); + + if (pHcidevInfo->HciNormalMode) { + /* TODO .. */ + } +} + +static void ar6000_hci_transport_removed(void *pContext) +{ + AR6K_HCI_BRIDGE_INFO *pHcidevInfo = (AR6K_HCI_BRIDGE_INFO *)pContext; + + AR_DEBUG_PRINTF(ATH_DEBUG_HCI_BRIDGE, ("HCI Bridge: transport removed. \n")); + + A_ASSERT(pHcidevInfo->pHCIDev != NULL); + + HCI_TransportDetach(pHcidevInfo->pHCIDev); + bt_cleanup_hci(pHcidevInfo); + pHcidevInfo->pHCIDev = NULL; +} + +static void ar6000_hci_send_complete(void *pContext, HTC_PACKET *pPacket) +{ + AR6K_HCI_BRIDGE_INFO *pHcidevInfo = (AR6K_HCI_BRIDGE_INFO *)pContext; + void *osbuf = pPacket->pPktContext; + A_ASSERT(osbuf != NULL); + A_ASSERT(pHcidevInfo != NULL); + + if (A_FAILED(pPacket->Status)) { + if ((pPacket->Status != A_ECANCELED) && (pPacket->Status != A_NO_RESOURCE)) { + AR_DEBUG_PRINTF(ATH_DEBUG_ERR, ("HCI Bridge: Send Packet Failed: %d \n",pPacket->Status)); + } + } + + FreeHTCStruct(pHcidevInfo,pPacket); + FreeBtOsBuf(pHcidevInfo,osbuf); + +} + +static void ar6000_hci_pkt_recv(void *pContext, HTC_PACKET *pPacket) +{ + AR6K_HCI_BRIDGE_INFO *pHcidevInfo = (AR6K_HCI_BRIDGE_INFO *)pContext; + struct sk_buff *skb; + + A_ASSERT(pHcidevInfo != NULL); + skb = (struct sk_buff *)pPacket->pPktContext; + A_ASSERT(skb != NULL); + + do { + + if (A_FAILED(pPacket->Status)) { + break; + } + + AR_DEBUG_PRINTF(ATH_DEBUG_HCI_RECV, + ("HCI Bridge, packet received type : %d len:%d \n", + HCI_GET_PACKET_TYPE(pPacket),pPacket->ActualLength)); + + /* set the actual buffer position in the os buffer, HTC recv buffers posted to HCI are set + * to fill the front of the buffer */ + A_NETBUF_PUT(skb,pPacket->ActualLength + pHcidevInfo->HCIProps.HeadRoom); + A_NETBUF_PULL(skb,pHcidevInfo->HCIProps.HeadRoom); + + if (AR_DEBUG_LVL_CHECK(ATH_DEBUG_HCI_DUMP)) { + AR_DEBUG_PRINTF(ATH_DEBUG_ANY,("<<< Recv HCI %s packet len:%d \n", + (HCI_GET_PACKET_TYPE(pPacket) == HCI_EVENT_TYPE) ? "EVENT" : "ACL", + skb->len)); + AR_DEBUG_PRINTBUF(skb->data, skb->len,"BT HCI RECV Packet Dump"); + } + + if (pHcidevInfo->HciNormalMode) { + /* indicate the packet */ + if (bt_indicate_recv(pHcidevInfo,HCI_GET_PACKET_TYPE(pPacket),skb)) { + /* bt stack accepted the packet */ + skb = NULL; + } + break; + } + + /* for testing, indicate packet to the network stack */ +#ifdef EXPORT_HCI_BRIDGE_INTERFACE + skb->dev = (struct net_device *)(pHcidevInfo->HCITransHdl.netDevice); + if ((((struct net_device *)pHcidevInfo->HCITransHdl.netDevice)->flags & IFF_UP) == IFF_UP) { + skb->protocol = eth_type_trans(skb, (struct net_device *)(pHcidevInfo->HCITransHdl.netDevice)); +#else + skb->dev = pHcidevInfo->ar->arNetDev; + if ((pHcidevInfo->ar->arNetDev->flags & IFF_UP) == IFF_UP) { + skb->protocol = eth_type_trans(skb, pHcidevInfo->ar->arNetDev); +#endif + netif_rx(skb); + skb = NULL; + } + + } while (FALSE); + + FreeHTCStruct(pHcidevInfo,pPacket); + + if (skb != NULL) { + /* packet was not accepted, free it */ + FreeBtOsBuf(pHcidevInfo,skb); + } + +} + +static void ar6000_hci_pkt_refill(void *pContext, HCI_TRANSPORT_PACKET_TYPE Type, int BuffersAvailable) +{ + AR6K_HCI_BRIDGE_INFO *pHcidevInfo = (AR6K_HCI_BRIDGE_INFO *)pContext; + int refillCount; + + if (Type == HCI_ACL_TYPE) { + refillCount = MAX_ACL_RECV_BUFS - BuffersAvailable; + } else { + refillCount = MAX_EVT_RECV_BUFS - BuffersAvailable; + } + + if (refillCount > 0) { + RefillRecvBuffers(pHcidevInfo,Type,refillCount); + } + +} + +static HCI_SEND_FULL_ACTION ar6000_hci_pkt_send_full(void *pContext, HTC_PACKET *pPacket) +{ + AR6K_HCI_BRIDGE_INFO *pHcidevInfo = (AR6K_HCI_BRIDGE_INFO *)pContext; + HCI_SEND_FULL_ACTION action = HCI_SEND_FULL_KEEP; + + if (!pHcidevInfo->HciNormalMode) { + /* for epping testing, check packet tag, some epping packets are + * special and cannot be dropped */ + if (HTC_GET_TAG_FROM_PKT(pPacket) == AR6K_DATA_PKT_TAG) { + action = HCI_SEND_FULL_DROP; + } + } + + return action; +} + +#ifdef EXPORT_HCI_BRIDGE_INTERFACE +A_STATUS ar6000_setup_hci(void *ar) +#else +A_STATUS ar6000_setup_hci(AR_SOFTC_T *ar) +#endif +{ + HCI_TRANSPORT_CONFIG_INFO config; + A_STATUS status = A_OK; + int i; + HTC_PACKET *pPacket; + AR6K_HCI_BRIDGE_INFO *pHcidevInfo; + + + do { + + pHcidevInfo = (AR6K_HCI_BRIDGE_INFO *)A_MALLOC(sizeof(AR6K_HCI_BRIDGE_INFO)); + + if (NULL == pHcidevInfo) { + status = A_NO_MEMORY; + break; + } + + A_MEMZERO(pHcidevInfo, sizeof(AR6K_HCI_BRIDGE_INFO)); +#ifdef EXPORT_HCI_BRIDGE_INTERFACE + g_pHcidevInfo = pHcidevInfo; + pHcidevInfo->HCITransHdl = *(HCI_TRANSPORT_MISC_HANDLES *)ar; +#else + ar->hcidev_info = pHcidevInfo; + pHcidevInfo->ar = ar; +#endif + spin_lock_init(&pHcidevInfo->BridgeLock); + INIT_HTC_PACKET_QUEUE(&pHcidevInfo->HTCPacketStructHead); + + ar->exitCallback = AR3KConfigureExit; + + status = bt_setup_hci(pHcidevInfo); + if (A_FAILED(status)) { + break; + } + + if (pHcidevInfo->HciNormalMode) { + AR_DEBUG_PRINTF(ATH_DEBUG_HCI_BRIDGE, ("HCI Bridge: running in normal mode... \n")); + } else { + AR_DEBUG_PRINTF(ATH_DEBUG_HCI_BRIDGE, ("HCI Bridge: running in test mode... \n")); + } + + pHcidevInfo->pHTCStructAlloc = (A_UINT8 *)A_MALLOC((sizeof(HTC_PACKET)) * NUM_HTC_PACKET_STRUCTS); + + if (NULL == pHcidevInfo->pHTCStructAlloc) { + status = A_NO_MEMORY; + break; + } + + pPacket = (HTC_PACKET *)pHcidevInfo->pHTCStructAlloc; + for (i = 0; i < NUM_HTC_PACKET_STRUCTS; i++,pPacket++) { + FreeHTCStruct(pHcidevInfo,pPacket); + } + + A_MEMZERO(&config,sizeof(HCI_TRANSPORT_CONFIG_INFO)); + config.ACLRecvBufferWaterMark = MAX_ACL_RECV_BUFS / 2; + config.EventRecvBufferWaterMark = MAX_EVT_RECV_BUFS / 2; + config.MaxSendQueueDepth = MAX_HCI_WRITE_QUEUE_DEPTH; + config.pContext = pHcidevInfo; + config.TransportFailure = ar6000_hci_transport_failure; + config.TransportReady = ar6000_hci_transport_ready; + config.TransportRemoved = ar6000_hci_transport_removed; + config.pHCISendComplete = ar6000_hci_send_complete; + config.pHCIPktRecv = ar6000_hci_pkt_recv; + config.pHCIPktRecvRefill = ar6000_hci_pkt_refill; + config.pHCISendFull = ar6000_hci_pkt_send_full; + +#ifdef EXPORT_HCI_BRIDGE_INTERFACE + pHcidevInfo->pHCIDev = HCI_TransportAttach(pHcidevInfo->HCITransHdl.htcHandle, &config); +#else + pHcidevInfo->pHCIDev = HCI_TransportAttach(ar->arHtcTarget, &config); +#endif + + if (NULL == pHcidevInfo->pHCIDev) { + status = A_ERROR; + } + + } while (FALSE); + + if (A_FAILED(status)) { + if (pHcidevInfo != NULL) { + if (NULL == pHcidevInfo->pHCIDev) { + /* GMBOX may not be present in older chips */ + /* just return success */ + status = A_OK; + } + } + ar6000_cleanup_hci(ar); + } + + return status; +} + +#ifdef EXPORT_HCI_BRIDGE_INTERFACE +void ar6000_cleanup_hci(void *ar) +#else +void ar6000_cleanup_hci(AR_SOFTC_T *ar) +#endif +{ +#ifdef EXPORT_HCI_BRIDGE_INTERFACE + AR6K_HCI_BRIDGE_INFO *pHcidevInfo = g_pHcidevInfo; +#else + AR6K_HCI_BRIDGE_INFO *pHcidevInfo = (AR6K_HCI_BRIDGE_INFO *)ar->hcidev_info; +#endif + + if (pHcidevInfo != NULL) { + bt_cleanup_hci(pHcidevInfo); + + if (pHcidevInfo->pHCIDev != NULL) { + HCI_TransportStop(pHcidevInfo->pHCIDev); + HCI_TransportDetach(pHcidevInfo->pHCIDev); + pHcidevInfo->pHCIDev = NULL; + } + + if (pHcidevInfo->pHTCStructAlloc != NULL) { + A_FREE(pHcidevInfo->pHTCStructAlloc); + pHcidevInfo->pHTCStructAlloc = NULL; + } + + A_FREE(pHcidevInfo); +#ifndef EXPORT_HCI_BRIDGE_INTERFACE + ar->hcidev_info = NULL; +#endif + } + + +} + +#ifdef EXPORT_HCI_BRIDGE_INTERFACE +A_STATUS hci_test_send(void *ar, struct sk_buff *skb) +#else +A_STATUS hci_test_send(AR_SOFTC_T *ar, struct sk_buff *skb) +#endif +{ + int status = A_OK; + int length; + EPPING_HEADER *pHeader; + HTC_PACKET *pPacket; + HTC_TX_TAG htc_tag = AR6K_DATA_PKT_TAG; +#ifdef EXPORT_HCI_BRIDGE_INTERFACE + AR6K_HCI_BRIDGE_INFO *pHcidevInfo = g_pHcidevInfo; +#else + AR6K_HCI_BRIDGE_INFO *pHcidevInfo = (AR6K_HCI_BRIDGE_INFO *)ar->hcidev_info; +#endif + + do { + + if (NULL == pHcidevInfo) { + status = A_ERROR; + break; + } + + if (NULL == pHcidevInfo->pHCIDev) { + status = A_ERROR; + break; + } + + if (pHcidevInfo->HciNormalMode) { + /* this interface cannot run when normal WMI is running */ + status = A_ERROR; + break; + } + + pHeader = (EPPING_HEADER *)A_NETBUF_DATA(skb); + + if (!IS_EPPING_PACKET(pHeader)) { + status = A_EINVAL; + break; + } + + if (IS_EPING_PACKET_NO_DROP(pHeader)) { + htc_tag = AR6K_CONTROL_PKT_TAG; + } + + length = sizeof(EPPING_HEADER) + pHeader->DataLength; + + pPacket = AllocHTCStruct(pHcidevInfo); + if (NULL == pPacket) { + status = A_NO_MEMORY; + break; + } + + SET_HTC_PACKET_INFO_TX(pPacket, + skb, + A_NETBUF_DATA(skb), + length, + HCI_ACL_TYPE, /* send every thing out as ACL */ + htc_tag); + + HCI_TransportSendPkt(pHcidevInfo->pHCIDev,pPacket,FALSE); + pPacket = NULL; + + } while (FALSE); + + return status; +} + +void ar6000_set_default_ar3kconfig(AR_SOFTC_T *ar, void *ar3kconfig) +{ + AR6K_HCI_BRIDGE_INFO *pHcidevInfo = (AR6K_HCI_BRIDGE_INFO *)ar->hcidev_info; + AR3K_CONFIG_INFO *config = (AR3K_CONFIG_INFO *)ar3kconfig; + + config->pHCIDev = pHcidevInfo->pHCIDev; + config->pHCIProps = &pHcidevInfo->HCIProps; + config->pHIFDevice = ar->arHifDevice; + config->pBtStackHCIDev = pHcidevInfo->pBtStackHCIDev; + config->Flags |= AR3K_CONFIG_FLAG_SET_AR3K_BAUD; + config->AR3KBaudRate = 115200; +} + +#ifdef CONFIG_BLUEZ_HCI_BRIDGE +/*** BT Stack Entrypoints *******/ + +/* + * bt_open - open a handle to the device +*/ +static int bt_open(struct hci_dev *hdev) +{ + + AR_DEBUG_PRINTF(ATH_DEBUG_TRC, ("HCI Bridge: bt_open - enter - x\n")); + set_bit(HCI_RUNNING, &hdev->flags); + set_bit(HCI_UP, &hdev->flags); + set_bit(HCI_INIT, &hdev->flags); + return 0; +} + +/* + * bt_close - close handle to the device +*/ +static int bt_close(struct hci_dev *hdev) +{ + AR_DEBUG_PRINTF(ATH_DEBUG_TRC, ("HCI Bridge: bt_close - enter\n")); + clear_bit(HCI_RUNNING, &hdev->flags); + return 0; +} + +/* + * bt_send_frame - send data frames +*/ +static int bt_send_frame(struct sk_buff *skb) +{ + struct hci_dev *hdev = (struct hci_dev *)skb->dev; + HCI_TRANSPORT_PACKET_TYPE type; + AR6K_HCI_BRIDGE_INFO *pHcidevInfo; + HTC_PACKET *pPacket; + A_STATUS status = A_OK; + struct sk_buff *txSkb = NULL; + + if (!hdev) { + AR_DEBUG_PRINTF(ATH_DEBUG_WARN, ("HCI Bridge: bt_send_frame - no device\n")); + return -ENODEV; + } + + if (!test_bit(HCI_RUNNING, &hdev->flags)) { + AR_DEBUG_PRINTF(ATH_DEBUG_TRC, ("HCI Bridge: bt_send_frame - not open\n")); + return -EBUSY; + } + + pHcidevInfo = (AR6K_HCI_BRIDGE_INFO *)hdev->driver_data; + A_ASSERT(pHcidevInfo != NULL); + + AR_DEBUG_PRINTF(ATH_DEBUG_HCI_SEND, ("+bt_send_frame type: %d \n",bt_cb(skb)->pkt_type)); + type = HCI_COMMAND_TYPE; + + switch (bt_cb(skb)->pkt_type) { + case HCI_COMMAND_PKT: + type = HCI_COMMAND_TYPE; + hdev->stat.cmd_tx++; + break; + + case HCI_ACLDATA_PKT: + type = HCI_ACL_TYPE; + hdev->stat.acl_tx++; + break; + + case HCI_SCODATA_PKT: + /* we don't support SCO over the bridge */ + kfree_skb(skb); + return 0; + default: + A_ASSERT(FALSE); + kfree_skb(skb); + return 0; + } + + if (AR_DEBUG_LVL_CHECK(ATH_DEBUG_HCI_DUMP)) { + AR_DEBUG_PRINTF(ATH_DEBUG_ANY,(">>> Send HCI %s packet len: %d\n", + (type == HCI_COMMAND_TYPE) ? "COMMAND" : "ACL", + skb->len)); + if (type == HCI_COMMAND_TYPE) { + A_UINT16 opcode = HCI_GET_OP_CODE(skb->data); + AR_DEBUG_PRINTF(ATH_DEBUG_ANY,(" HCI Command: OGF:0x%X OCF:0x%X \r\n", + opcode >> 10, opcode & 0x3FF)); + } + AR_DEBUG_PRINTBUF(skb->data,skb->len,"BT HCI SEND Packet Dump"); + } + + do { + + txSkb = bt_skb_alloc(TX_PACKET_RSV_OFFSET + pHcidevInfo->HCIProps.HeadRoom + + pHcidevInfo->HCIProps.TailRoom + skb->len, + GFP_ATOMIC); + + if (txSkb == NULL) { + status = A_NO_MEMORY; + break; + } + + bt_cb(txSkb)->pkt_type = bt_cb(skb)->pkt_type; + txSkb->dev = (void *)pHcidevInfo->pBtStackHCIDev; + skb_reserve(txSkb, TX_PACKET_RSV_OFFSET + pHcidevInfo->HCIProps.HeadRoom); + A_MEMCPY(txSkb->data, skb->data, skb->len); + skb_put(txSkb,skb->len); + + pPacket = AllocHTCStruct(pHcidevInfo); + if (NULL == pPacket) { + status = A_NO_MEMORY; + break; + } + + /* HCI packet length here doesn't include the 1-byte transport header which + * will be handled by the HCI transport layer. Enough headroom has already + * been reserved above for the transport header + */ + SET_HTC_PACKET_INFO_TX(pPacket, + txSkb, + txSkb->data, + txSkb->len, + type, + AR6K_CONTROL_PKT_TAG); /* HCI packets cannot be dropped */ + + AR_DEBUG_PRINTF(ATH_DEBUG_HCI_SEND, ("HCI Bridge: bt_send_frame skb:0x%lX \n",(unsigned long)txSkb)); + AR_DEBUG_PRINTF(ATH_DEBUG_HCI_SEND, ("HCI Bridge: type:%d, Total Length:%d Bytes \n", + type, txSkb->len)); + + status = HCI_TransportSendPkt(pHcidevInfo->pHCIDev,pPacket,FALSE); + pPacket = NULL; + txSkb = NULL; + + } while (FALSE); + + if (txSkb != NULL) { + kfree_skb(txSkb); + } + + kfree_skb(skb); + + AR_DEBUG_PRINTF(ATH_DEBUG_HCI_SEND, ("-bt_send_frame \n")); + return 0; +} + +/* + * bt_ioctl - ioctl processing +*/ +static int bt_ioctl(struct hci_dev *hdev, unsigned int cmd, unsigned long arg) +{ + AR_DEBUG_PRINTF(ATH_DEBUG_TRC, ("HCI Bridge: bt_ioctl - enter\n")); + return -ENOIOCTLCMD; +} + +/* + * bt_flush - flush outstandingbpackets +*/ +static int bt_flush(struct hci_dev *hdev) +{ + AR6K_HCI_BRIDGE_INFO *pHcidevInfo; + + AR_DEBUG_PRINTF(ATH_DEBUG_TRC, ("HCI Bridge: bt_flush - enter\n")); + + pHcidevInfo = (AR6K_HCI_BRIDGE_INFO *)hdev->driver_data; + + /* TODO??? */ + + return 0; +} + + +/* + * bt_destruct - +*/ +static void bt_destruct(struct hci_dev *hdev) +{ + AR_DEBUG_PRINTF(ATH_DEBUG_TRC, ("HCI Bridge: bt_destruct - enter\n")); + /* nothing to do here */ +} + +static A_STATUS bt_setup_hci(AR6K_HCI_BRIDGE_INFO *pHcidevInfo) +{ + A_STATUS status = A_OK; + struct hci_dev *pHciDev = NULL; + HIF_DEVICE_OS_DEVICE_INFO osDevInfo; + + if (!setupbtdev) { + return A_OK; + } + + do { + + A_MEMZERO(&osDevInfo,sizeof(osDevInfo)); + /* get the underlying OS device */ +#ifdef EXPORT_HCI_BRIDGE_INTERFACE + status = ar6000_get_hif_dev((HIF_DEVICE *)(pHcidevInfo->HCITransHdl.hifDevice), + &osDevInfo); +#else + status = HIFConfigureDevice(pHcidevInfo->ar->arHifDevice, + HIF_DEVICE_GET_OS_DEVICE, + &osDevInfo, + sizeof(osDevInfo)); +#endif + + if (A_FAILED(status)) { + AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("Failed to OS device info from HIF\n")); + break; + } + + /* allocate a BT HCI struct for this device */ + pHciDev = hci_alloc_dev(); + if (NULL == pHciDev) { + AR_DEBUG_PRINTF(ATH_DEBUG_ERR, ("HCI Bridge - failed to allocate bt struct \n")); + status = A_NO_MEMORY; + break; + } + /* save the device, we'll register this later */ + pHcidevInfo->pBtStackHCIDev = pHciDev; + SET_HCIDEV_DEV(pHciDev,osDevInfo.pOSDevice); + SET_HCI_BUS_TYPE(pHciDev, HCI_VIRTUAL, HCI_BREDR); + pHciDev->driver_data = pHcidevInfo; + pHciDev->open = bt_open; + pHciDev->close = bt_close; + pHciDev->send = bt_send_frame; + pHciDev->ioctl = bt_ioctl; + pHciDev->flush = bt_flush; + pHciDev->destruct = bt_destruct; + pHciDev->owner = THIS_MODULE; + /* driver is running in normal BT mode */ + pHcidevInfo->HciNormalMode = TRUE; + + } while (FALSE); + + if (A_FAILED(status)) { + bt_cleanup_hci(pHcidevInfo); + } + + return status; +} + +static void bt_cleanup_hci(AR6K_HCI_BRIDGE_INFO *pHcidevInfo) +{ + int err; + + if (pHcidevInfo->HciRegistered) { + pHcidevInfo->HciRegistered = FALSE; + clear_bit(HCI_RUNNING, &pHcidevInfo->pBtStackHCIDev->flags); + clear_bit(HCI_UP, &pHcidevInfo->pBtStackHCIDev->flags); + clear_bit(HCI_INIT, &pHcidevInfo->pBtStackHCIDev->flags); + A_ASSERT(pHcidevInfo->pBtStackHCIDev != NULL); + /* unregister */ + if ((err = hci_unregister_dev(pHcidevInfo->pBtStackHCIDev)) < 0) { + AR_DEBUG_PRINTF(ATH_DEBUG_ERR, ("HCI Bridge: failed to unregister with bluetooth %d\n",err)); + } + } + + if (pHcidevInfo->pBtStackHCIDev != NULL) { + kfree(pHcidevInfo->pBtStackHCIDev); + pHcidevInfo->pBtStackHCIDev = NULL; + } +} + +static A_STATUS bt_register_hci(AR6K_HCI_BRIDGE_INFO *pHcidevInfo) +{ + int err; + A_STATUS status = A_OK; + + do { + AR_DEBUG_PRINTF(ATH_DEBUG_HCI_BRIDGE, ("HCI Bridge: registering HCI... \n")); + A_ASSERT(pHcidevInfo->pBtStackHCIDev != NULL); + /* mark that we are registered */ + pHcidevInfo->HciRegistered = TRUE; + if ((err = hci_register_dev(pHcidevInfo->pBtStackHCIDev)) < 0) { + AR_DEBUG_PRINTF(ATH_DEBUG_ERR, ("HCI Bridge: failed to register with bluetooth %d\n",err)); + pHcidevInfo->HciRegistered = FALSE; + status = A_ERROR; + break; + } + + AR_DEBUG_PRINTF(ATH_DEBUG_HCI_BRIDGE, ("HCI Bridge: HCI registered \n")); + + } while (FALSE); + + return status; +} + +static A_BOOL bt_indicate_recv(AR6K_HCI_BRIDGE_INFO *pHcidevInfo, + HCI_TRANSPORT_PACKET_TYPE Type, + struct sk_buff *skb) +{ + A_UINT8 btType; + int len; + A_BOOL success = FALSE; + BT_HCI_EVENT_HEADER *pEvent; + + do { + + if (!test_bit(HCI_RUNNING, &pHcidevInfo->pBtStackHCIDev->flags)) { + AR_DEBUG_PRINTF(ATH_DEBUG_WARN, ("HCI Bridge: bt_indicate_recv - not running\n")); + break; + } + + switch (Type) { + case HCI_ACL_TYPE: + btType = HCI_ACLDATA_PKT; + break; + case HCI_EVENT_TYPE: + btType = HCI_EVENT_PKT; + break; + default: + btType = 0; + A_ASSERT(FALSE); + break; + } + + if (0 == btType) { + break; + } + + /* set the final type */ + bt_cb(skb)->pkt_type = btType; + /* set dev */ + skb->dev = (void *)pHcidevInfo->pBtStackHCIDev; + len = skb->len; + + if (AR_DEBUG_LVL_CHECK(ATH_DEBUG_HCI_RECV)) { + if (bt_cb(skb)->pkt_type == HCI_EVENT_PKT) { + pEvent = (BT_HCI_EVENT_HEADER *)skb->data; + AR_DEBUG_PRINTF(ATH_DEBUG_HCI_RECV, ("BT HCI EventCode: %d, len:%d \n", + pEvent->EventCode, pEvent->ParamLength)); + } + } + + /* pass receive packet up the stack */ + if (hci_recv_frame(skb) != 0) { + AR_DEBUG_PRINTF(ATH_DEBUG_ERR, ("HCI Bridge: hci_recv_frame failed \n")); + break; + } else { + AR_DEBUG_PRINTF(ATH_DEBUG_HCI_RECV, + ("HCI Bridge: Indicated RCV of type:%d, Length:%d \n",btType,len)); + } + + success = TRUE; + + } while (FALSE); + + return success; +} + +static struct sk_buff* bt_alloc_buffer(AR6K_HCI_BRIDGE_INFO *pHcidevInfo, int Length) +{ + struct sk_buff *skb; + /* in normal HCI mode we need to alloc from the bt core APIs */ + skb = bt_skb_alloc(Length, GFP_ATOMIC); + if (NULL == skb) { + AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("Failed to alloc bt sk_buff \n")); + } + return skb; +} + +static void bt_free_buffer(AR6K_HCI_BRIDGE_INFO *pHcidevInfo, struct sk_buff *skb) +{ + kfree_skb(skb); +} + +#else // { CONFIG_BLUEZ_HCI_BRIDGE + + /* stubs when we only want to test the HCI bridging Interface without the HT stack */ +static A_STATUS bt_setup_hci(AR6K_HCI_BRIDGE_INFO *pHcidevInfo) +{ + return A_OK; +} +static void bt_cleanup_hci(AR6K_HCI_BRIDGE_INFO *pHcidevInfo) +{ + +} +static A_STATUS bt_register_hci(AR6K_HCI_BRIDGE_INFO *pHcidevInfo) +{ + A_ASSERT(FALSE); + return A_ERROR; +} + +static A_BOOL bt_indicate_recv(AR6K_HCI_BRIDGE_INFO *pHcidevInfo, + HCI_TRANSPORT_PACKET_TYPE Type, + struct sk_buff *skb) +{ + A_ASSERT(FALSE); + return FALSE; +} + +static struct sk_buff* bt_alloc_buffer(AR6K_HCI_BRIDGE_INFO *pHcidevInfo, int Length) +{ + A_ASSERT(FALSE); + return NULL; +} +static void bt_free_buffer(AR6K_HCI_BRIDGE_INFO *pHcidevInfo, struct sk_buff *skb) +{ + A_ASSERT(FALSE); +} + +#endif // } CONFIG_BLUEZ_HCI_BRIDGE + +#else // { ATH_AR6K_ENABLE_GMBOX + + /* stubs when GMBOX support is not needed */ + +#ifdef EXPORT_HCI_BRIDGE_INTERFACE +A_STATUS ar6000_setup_hci(void *ar) +#else +A_STATUS ar6000_setup_hci(AR_SOFTC_T *ar) +#endif +{ + return A_OK; +} + +#ifdef EXPORT_HCI_BRIDGE_INTERFACE +void ar6000_cleanup_hci(void *ar) +#else +void ar6000_cleanup_hci(AR_SOFTC_T *ar) +#endif +{ + return; +} + +#ifndef EXPORT_HCI_BRIDGE_INTERFACE +void ar6000_set_default_ar3kconfig(AR_SOFTC_T *ar, void *ar3kconfig) +{ + return; +} +#endif + +#ifdef EXPORT_HCI_BRIDGE_INTERFACE +int hci_test_send(void *ar, struct sk_buff *skb) +#else +int hci_test_send(AR_SOFTC_T *ar, struct sk_buff *skb) +#endif +{ + return -EOPNOTSUPP; +} + +#endif // } ATH_AR6K_ENABLE_GMBOX + + +#ifdef EXPORT_HCI_BRIDGE_INTERFACE +static int __init +hcibridge_init_module(void) +{ + A_STATUS status; + HCI_TRANSPORT_CALLBACKS hciTransCallbacks; + + hciTransCallbacks.setupTransport = ar6000_setup_hci; + hciTransCallbacks.cleanupTransport = ar6000_cleanup_hci; + + status = ar6000_register_hci_transport(&hciTransCallbacks); + if(status != A_OK) + return -ENODEV; + + return 0; +} + +static void __exit +hcibridge_cleanup_module(void) +{ +} + +module_init(hcibridge_init_module); +module_exit(hcibridge_cleanup_module); +MODULE_LICENSE("Dual BSD/GPL"); +#endif |