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//------------------------------------------------------------------------------
// <copyright file="ar3kconfig.c" company="Atheros">
// Copyright (c) 2009 Atheros Corporation. All rights reserved.
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License version 2 as
// published by the Free Software Foundation;
//
// Software distributed under the License is distributed on an "AS
// IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
// implied. See the License for the specific language governing
// rights and limitations under the License.
//
//
//------------------------------------------------------------------------------
//==============================================================================
// AR3K configuration implementation
//
// Author(s): ="Atheros"
//==============================================================================
#include "a_config.h"
#include "athdefs.h"
#include "a_types.h"
#include "a_osapi.h"
#define ATH_MODULE_NAME misc
#include "a_debug.h"
#include "common_drv.h"
#ifdef EXPORT_HCI_BRIDGE_INTERFACE
#include "export_hci_transport.h"
#else
#include "hci_transport_api.h"
#endif
#include "ar3kconfig.h"
#define BAUD_CHANGE_COMMAND_STATUS_OFFSET 5
#define HCI_EVENT_RESP_TIMEOUTMS 3000
#define HCI_CMD_OPCODE_BYTE_LOW_OFFSET 0
#define HCI_CMD_OPCODE_BYTE_HI_OFFSET 1
#define HCI_EVENT_OPCODE_BYTE_LOW 3
#define HCI_EVENT_OPCODE_BYTE_HI 4
#define HCI_CMD_COMPLETE_EVENT_CODE 0xE
#define HCI_MAX_EVT_RECV_LENGTH 257
#define EXIT_MIN_BOOT_COMMAND_STATUS_OFFSET 5
A_STATUS AthPSInitialize(AR3K_CONFIG_INFO *hdev);
static A_STATUS SendHCICommand(AR3K_CONFIG_INFO *pConfig,
A_UINT8 *pBuffer,
int Length)
{
HTC_PACKET *pPacket = NULL;
A_STATUS status = A_OK;
do {
pPacket = (HTC_PACKET *)A_MALLOC(sizeof(HTC_PACKET));
if (NULL == pPacket) {
status = A_NO_MEMORY;
break;
}
A_MEMZERO(pPacket,sizeof(HTC_PACKET));
SET_HTC_PACKET_INFO_TX(pPacket,
NULL,
pBuffer,
Length,
HCI_COMMAND_TYPE,
AR6K_CONTROL_PKT_TAG);
/* issue synchronously */
status = HCI_TransportSendPkt(pConfig->pHCIDev,pPacket,TRUE);
} while (FALSE);
if (pPacket != NULL) {
A_FREE(pPacket);
}
return status;
}
static A_STATUS RecvHCIEvent(AR3K_CONFIG_INFO *pConfig,
A_UINT8 *pBuffer,
int *pLength)
{
A_STATUS status = A_OK;
HTC_PACKET *pRecvPacket = NULL;
do {
pRecvPacket = (HTC_PACKET *)A_MALLOC(sizeof(HTC_PACKET));
if (NULL == pRecvPacket) {
status = A_NO_MEMORY;
AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("Failed to alloc HTC struct \n"));
break;
}
A_MEMZERO(pRecvPacket,sizeof(HTC_PACKET));
SET_HTC_PACKET_INFO_RX_REFILL(pRecvPacket,NULL,pBuffer,*pLength,HCI_EVENT_TYPE);
status = HCI_TransportRecvHCIEventSync(pConfig->pHCIDev,
pRecvPacket,
HCI_EVENT_RESP_TIMEOUTMS);
if (A_FAILED(status)) {
break;
}
*pLength = pRecvPacket->ActualLength;
} while (FALSE);
if (pRecvPacket != NULL) {
A_FREE(pRecvPacket);
}
return status;
}
A_STATUS SendHCICommandWaitCommandComplete(AR3K_CONFIG_INFO *pConfig,
A_UINT8 *pHCICommand,
int CmdLength,
A_UINT8 **ppEventBuffer,
A_UINT8 **ppBufferToFree)
{
A_STATUS status = A_OK;
A_UINT8 *pBuffer = NULL;
A_UINT8 *pTemp;
int length;
A_BOOL commandComplete = FALSE;
A_UINT8 opCodeBytes[2];
do {
length = max(HCI_MAX_EVT_RECV_LENGTH,CmdLength);
length += pConfig->pHCIProps->HeadRoom + pConfig->pHCIProps->TailRoom;
length += pConfig->pHCIProps->IOBlockPad;
pBuffer = (A_UINT8 *)A_MALLOC(length);
if (NULL == pBuffer) {
AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("AR3K Config: Failed to allocate bt buffer \n"));
status = A_NO_MEMORY;
break;
}
/* get the opcodes to check the command complete event */
opCodeBytes[0] = pHCICommand[HCI_CMD_OPCODE_BYTE_LOW_OFFSET];
opCodeBytes[1] = pHCICommand[HCI_CMD_OPCODE_BYTE_HI_OFFSET];
/* copy HCI command */
A_MEMCPY(pBuffer + pConfig->pHCIProps->HeadRoom,pHCICommand,CmdLength);
/* send command */
status = SendHCICommand(pConfig,
pBuffer + pConfig->pHCIProps->HeadRoom,
CmdLength);
if (A_FAILED(status)) {
AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("AR3K Config: Failed to send HCI Command (%d) \n", status));
AR_DEBUG_PRINTBUF(pHCICommand,CmdLength,"HCI Bridge Failed HCI Command");
break;
}
/* reuse buffer to capture command complete event */
A_MEMZERO(pBuffer,length);
status = RecvHCIEvent(pConfig,pBuffer,&length);
if (A_FAILED(status)) {
AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("AR3K Config: HCI event recv failed \n"));
AR_DEBUG_PRINTBUF(pHCICommand,CmdLength,"HCI Bridge Failed HCI Command");
break;
}
pTemp = pBuffer + pConfig->pHCIProps->HeadRoom;
if (pTemp[0] == HCI_CMD_COMPLETE_EVENT_CODE) {
if ((pTemp[HCI_EVENT_OPCODE_BYTE_LOW] == opCodeBytes[0]) &&
(pTemp[HCI_EVENT_OPCODE_BYTE_HI] == opCodeBytes[1])) {
commandComplete = TRUE;
}
}
if (!commandComplete) {
AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("AR3K Config: Unexpected HCI event : %d \n",pTemp[0]));
AR_DEBUG_PRINTBUF(pTemp,pTemp[1],"Unexpected HCI event");
status = A_ECOMM;
break;
}
if (ppEventBuffer != NULL) {
/* caller wants to look at the event */
*ppEventBuffer = pTemp;
if (ppBufferToFree == NULL) {
status = A_EINVAL;
break;
}
/* caller must free the buffer */
*ppBufferToFree = pBuffer;
pBuffer = NULL;
}
} while (FALSE);
if (pBuffer != NULL) {
A_FREE(pBuffer);
}
return status;
}
static A_STATUS AR3KConfigureHCIBaud(AR3K_CONFIG_INFO *pConfig)
{
A_STATUS status = A_OK;
A_UINT8 hciBaudChangeCommand[] = {0x0c,0xfc,0x2,0,0};
A_UINT16 baudVal;
A_UINT8 *pEvent = NULL;
A_UINT8 *pBufferToFree = NULL;
do {
if (pConfig->Flags & AR3K_CONFIG_FLAG_SET_AR3K_BAUD) {
baudVal = (A_UINT16)(pConfig->AR3KBaudRate / 100);
hciBaudChangeCommand[3] = (A_UINT8)baudVal;
hciBaudChangeCommand[4] = (A_UINT8)(baudVal >> 8);
status = SendHCICommandWaitCommandComplete(pConfig,
hciBaudChangeCommand,
sizeof(hciBaudChangeCommand),
&pEvent,
&pBufferToFree);
if (A_FAILED(status)) {
AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("AR3K Config: Baud rate change failed! \n"));
break;
}
if (pEvent[BAUD_CHANGE_COMMAND_STATUS_OFFSET] != 0) {
AR_DEBUG_PRINTF(ATH_DEBUG_ERR,
("AR3K Config: Baud change command event status failed: %d \n",
pEvent[BAUD_CHANGE_COMMAND_STATUS_OFFSET]));
status = A_ECOMM;
break;
}
AR_DEBUG_PRINTF(ATH_DEBUG_ANY,
("AR3K Config: Baud Changed to %d \n",pConfig->AR3KBaudRate));
}
if (pConfig->Flags & AR3K_CONFIG_FLAG_AR3K_BAUD_CHANGE_DELAY) {
/* some versions of AR3K do not switch baud immediately, up to 300MS */
A_MDELAY(325);
}
if (pConfig->Flags & AR3K_CONFIG_FLAG_SET_AR6K_SCALE_STEP) {
/* Tell target to change UART baud rate for AR6K */
status = HCI_TransportSetBaudRate(pConfig->pHCIDev, pConfig->AR3KBaudRate);
if (A_FAILED(status)) {
AR_DEBUG_PRINTF(ATH_DEBUG_ERR,
("AR3K Config: failed to set scale and step values: %d \n", status));
break;
}
AR_DEBUG_PRINTF(ATH_DEBUG_ANY,
("AR3K Config: Baud changed to %d for AR6K\n", pConfig->AR3KBaudRate));
}
} while (FALSE);
if (pBufferToFree != NULL) {
A_FREE(pBufferToFree);
}
return status;
}
static A_STATUS AR3KExitMinBoot(AR3K_CONFIG_INFO *pConfig)
{
A_STATUS status;
A_CHAR exitMinBootCmd[] = {0x25,0xFC,0x0c,0x03,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00};
A_UINT8 *pEvent = NULL;
A_UINT8 *pBufferToFree = NULL;
status = SendHCICommandWaitCommandComplete(pConfig,
exitMinBootCmd,
sizeof(exitMinBootCmd),
&pEvent,
&pBufferToFree);
if (A_SUCCESS(status)) {
if (pEvent[EXIT_MIN_BOOT_COMMAND_STATUS_OFFSET] != 0) {
AR_DEBUG_PRINTF(ATH_DEBUG_ERR,
("AR3K Config: MinBoot exit command event status failed: %d \n",
pEvent[EXIT_MIN_BOOT_COMMAND_STATUS_OFFSET]));
status = A_ECOMM;
} else {
AR_DEBUG_PRINTF(ATH_DEBUG_INFO,
("AR3K Config: MinBoot Exit Command Complete (Success) \n"));
A_MDELAY(1);
}
} else {
AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("AR3K Config: MinBoot Exit Failed! \n"));
}
if (pBufferToFree != NULL) {
A_FREE(pBufferToFree);
}
return status;
}
static A_STATUS AR3KConfigureSendHCIReset(AR3K_CONFIG_INFO *pConfig)
{
A_STATUS status = A_OK;
A_UINT8 hciResetCommand[] = {0x03,0x0c,0x0};
A_UINT8 *pEvent = NULL;
A_UINT8 *pBufferToFree = NULL;
status = SendHCICommandWaitCommandComplete( pConfig,
hciResetCommand,
sizeof(hciResetCommand),
&pEvent,
&pBufferToFree );
if (A_FAILED(status)) {
AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("AR3K Config: HCI reset failed! \n"));
}
if (pBufferToFree != NULL) {
A_FREE(pBufferToFree);
}
return status;
}
A_STATUS AR3KConfigure(AR3K_CONFIG_INFO *pConfig)
{
A_STATUS status = A_OK;
AR_DEBUG_PRINTF(ATH_DEBUG_INFO,("AR3K Config: Configuring AR3K ...\n"));
do {
if ((pConfig->pHCIDev == NULL) || (pConfig->pHCIProps == NULL) || (pConfig->pHIFDevice == NULL)) {
status = A_EINVAL;
break;
}
/* disable asynchronous recv while we issue commands and receive events synchronously */
status = HCI_TransportEnableDisableAsyncRecv(pConfig->pHCIDev,FALSE);
if (A_FAILED(status)) {
break;
}
if (pConfig->Flags & AR3K_CONFIG_FLAG_FORCE_MINBOOT_EXIT) {
status = AR3KExitMinBoot(pConfig);
if (A_FAILED(status)) {
break;
}
}
if (pConfig->Flags &
(AR3K_CONFIG_FLAG_SET_AR3K_BAUD | AR3K_CONFIG_FLAG_SET_AR6K_SCALE_STEP)) {
status = AR3KConfigureHCIBaud(pConfig);
if (A_FAILED(status)) {
break;
}
}
/* Load patching and PST file if available*/
if (A_OK != AthPSInitialize(pConfig)) {
AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("Patch Download Failed!\n"));
}
/* Send HCI reset to make PS tags take effect*/
AR3KConfigureSendHCIReset(pConfig);
/* re-enable asynchronous recv */
status = HCI_TransportEnableDisableAsyncRecv(pConfig->pHCIDev,TRUE);
if (A_FAILED(status)) {
break;
}
} while (FALSE);
AR_DEBUG_PRINTF(ATH_DEBUG_INFO,("AR3K Config: Configuration Complete (status = %d) \n",status));
return status;
}
A_STATUS AR3KConfigureExit(void *config)
{
A_STATUS status = A_OK;
AR3K_CONFIG_INFO *pConfig = (AR3K_CONFIG_INFO *)config;
AR_DEBUG_PRINTF(ATH_DEBUG_INFO,("AR3K Config: Cleaning up AR3K ...\n"));
do {
if ((pConfig->pHCIDev == NULL) || (pConfig->pHCIProps == NULL) || (pConfig->pHIFDevice == NULL)) {
status = A_EINVAL;
break;
}
/* disable asynchronous recv while we issue commands and receive events synchronously */
status = HCI_TransportEnableDisableAsyncRecv(pConfig->pHCIDev,FALSE);
if (A_FAILED(status)) {
break;
}
if (pConfig->Flags &
(AR3K_CONFIG_FLAG_SET_AR3K_BAUD | AR3K_CONFIG_FLAG_SET_AR6K_SCALE_STEP)) {
status = AR3KConfigureHCIBaud(pConfig);
if (A_FAILED(status)) {
break;
}
}
/* re-enable asynchronous recv */
status = HCI_TransportEnableDisableAsyncRecv(pConfig->pHCIDev,TRUE);
if (A_FAILED(status)) {
break;
}
} while (FALSE);
AR_DEBUG_PRINTF(ATH_DEBUG_INFO,("AR3K Config: Cleanup Complete (status = %d) \n",status));
return status;
}
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