ETxnStatus sdioAdapt_TransactBytes (unsigned int uFuncId,
unsigned int uHwAddr,
void * pHostAddr,
unsigned int uLength,
unsigned int bDirection,
unsigned int bMore)
{
int iStatus;
/* Call read or write bytes Sync method */
if (bDirection)
{
iStatus = sdioDrv_ReadDirectBytes(uFuncId, uHwAddr, pHostAddr, uLength, bMore);
}
else
{
iStatus = sdioDrv_WriteDirectBytes(uFuncId, uHwAddr, pHostAddr, uLength, bMore);
}
// If failed return ERROR, if succeeded return COMPLETE
if (iStatus)
{
return TXN_STATUS_ERROR;
}
return TXN_STATUS_COMPLETE;
}
int sdioAdapt_ConnectBus (void * fCbFunc,
void * hCbArg,
unsigned int uBlkSizeShift,
unsigned int uSdioThreadPriority,
unsigned char **pRxDmaBufAddr,
unsigned int *pRxDmaBufLen,
unsigned char **pTxDmaBufAddr,
unsigned int *pTxDmaBufLen)
{
unsigned char uByte;
unsigned long uLong;
unsigned long uCount = 0;
unsigned int uBlkSize = 1 << uBlkSizeShift;
int iStatus;
/* Allocate a DMA-able buffer and provide it to the upper layer to be used for all read and write transactions */
if (pDmaBufAddr == 0) { /* allocate only once (in case this function is called multiple times) */
pDmaBufAddr = kmalloc (MAX_BUS_TXN_SIZE, GFP_KERNEL | GFP_DMA);
if (pDmaBufAddr == 0) {
return -1;
}
}
*pRxDmaBufAddr = *pTxDmaBufAddr = pDmaBufAddr;
*pRxDmaBufLen = *pTxDmaBufLen = MAX_BUS_TXN_SIZE;
/* Init SDIO driver and HW */
iStatus = sdioDrv_ConnectBus (fCbFunc, hCbArg, uBlkSizeShift, uSdioThreadPriority);
if (iStatus) {
return iStatus;
}
/* Send commands sequence: 0, 5, 3, 7 */
iStatus = sdioDrv_ExecuteCmd (SD_IO_GO_IDLE_STATE, 0, MMC_RSP_NONE, &uByte, sizeof(uByte));
if (iStatus) {
printk("%s %d command number: %d failed\n", __FUNCTION__, __LINE__, SD_IO_GO_IDLE_STATE);
return iStatus;
}
iStatus = sdioDrv_ExecuteCmd (SDIO_CMD5, VDD_VOLTAGE_WINDOW, MMC_RSP_R4, &uByte, sizeof(uByte));
if (iStatus) {
printk("%s %d command number: %d failed\n", __FUNCTION__, __LINE__, SDIO_CMD5);
return iStatus;
}
iStatus = sdioDrv_ExecuteCmd (SD_IO_SEND_RELATIVE_ADDR, 0, MMC_RSP_R6, &uLong, sizeof(uLong));
if (iStatus) {
printk("%s %d command number: %d failed\n", __FUNCTION__, __LINE__, SD_IO_SEND_RELATIVE_ADDR);
return iStatus;
}
iStatus = sdioDrv_ExecuteCmd (SD_IO_SELECT_CARD, uLong, MMC_RSP_R6, &uByte, sizeof(uByte));
if (iStatus) {
printk("%s %d command number: %d failed\n", __FUNCTION__, __LINE__, SD_IO_SELECT_CARD);
return iStatus;
}
/* NOTE:
* =====
* Each of the following loops is a workaround for a HW bug that will be solved in PG1.1 !!
* Each write of CMD-52 to function-0 should use it as follows:
* 1) Write the desired byte using CMD-52
* 2) Read back the byte using CMD-52
* 3) Write two dummy bytes to address 0xC8 using CMD-53
* 4) If the byte read in step 2 is different than the written byte repeat the sequence
*/
/* set device side bus width to 4 bit (for 1 bit write 0x80 instead of 0x82) */
do {
uByte = SDIO_BITS_CODE;
iStatus = sdioDrv_WriteDirectBytes (TXN_FUNC_ID_CTRL, CCCR_BUS_INTERFACE_CONTOROL, &uByte, 1, 1);
if (iStatus) {
return iStatus;
}
iStatus = sdioDrv_ReadDirectBytes (TXN_FUNC_ID_CTRL, CCCR_BUS_INTERFACE_CONTOROL, &uByte, 1, 1);
if (iStatus) {
return iStatus;
}
iStatus = sdioDrv_WriteDirectBytes (TXN_FUNC_ID_CTRL, 0xC8, (unsigned char*)&uLong, 2, 1);
if (iStatus) {
return iStatus;
}
uCount++;
} while ((uByte != SDIO_BITS_CODE) && (uCount < MAX_RETRIES));
uCount = 0;
/* allow function 2 */
do {
uByte = 4;
iStatus = sdioDrv_WriteDirectBytes (TXN_FUNC_ID_CTRL, CCCR_IO_ENABLE, &uByte, 1, 1);
if (iStatus) {
return iStatus;
}
iStatus = sdioDrv_ReadDirectBytes (TXN_FUNC_ID_CTRL, CCCR_IO_ENABLE, &uByte, 1, 1);
if (iStatus) {
return iStatus;
}
iStatus = sdioDrv_WriteDirectBytes (TXN_FUNC_ID_CTRL, 0xC8, (unsigned char*)&uLong, 2, 1);
if (iStatus) {
return iStatus;
}
uCount++;
} while ((uByte != 4) && (uCount < MAX_RETRIES));
#ifdef SDIO_IN_BAND_INTERRUPT
uCount = 0;
do {
uByte = 3;
iStatus = sdioDrv_WriteDirectBytes (TXN_FUNC_ID_CTRL, CCCR_INT_ENABLE, &uByte, 1, 1);
if (iStatus) {
return iStatus;
}
iStatus = sdioDrv_ReadDirectBytes (TXN_FUNC_ID_CTRL, CCCR_INT_ENABLE, &uByte, 1, 1);
if (iStatus) {
return iStatus;
}
iStatus = sdioDrv_WriteDirectBytes (TXN_FUNC_ID_CTRL, 0xC8, &uLong, 2, 1);
if (iStatus) {
return iStatus;
}
uCount++;
} while ((uByte != 3) && (uCount < MAX_RETRIES));
#endif
uCount = 0;
/* set block size for SDIO block mode */
do {
uLong = uBlkSize;
iStatus = sdioDrv_WriteDirectBytes (TXN_FUNC_ID_CTRL, FN0_FBR2_REG_108, (unsigned char*)&uLong, 2, 1);
if (iStatus) {
return iStatus;
}
iStatus = sdioDrv_ReadDirectBytes (TXN_FUNC_ID_CTRL, FN0_FBR2_REG_108, (unsigned char*)&uLong, 2, 1);
if (iStatus) {
return iStatus;
}
iStatus = sdioDrv_WriteDirectBytes (TXN_FUNC_ID_CTRL, 0xC8, (unsigned char*)&uLong, 2, 1);
if (iStatus) {
return iStatus;
}
uCount++;
} while (((uLong & FN0_FBR2_REG_108_BIT_MASK) != uBlkSize) && (uCount < MAX_RETRIES));
if (uCount >= MAX_RETRIES) {
/* Failed to write CMD52_WRITE to function 0 */
return (int)uCount;
}
return iStatus;
}