| /****************************************************************************** |
| * |
| * Copyright (C) 2013 - 2015 Xilinx, Inc. All rights reserved. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a copy |
| * of this software and associated documentation files (the "Software"), to deal |
| * in the Software without restriction, including without limitation the rights |
| * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| * copies of the Software, and to permit persons to whom the Software is |
| * furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * Use of the Software is limited solely to applications: |
| * (a) running on a Xilinx device, or |
| * (b) that interact with a Xilinx device through a bus or interconnect. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * XILINX BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, |
| * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF |
| * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| * SOFTWARE. |
| * |
| * Except as contained in this notice, the name of the Xilinx shall not be used |
| * in advertising or otherwise to promote the sale, use or other dealings in |
| * this Software without prior written authorization from Xilinx. |
| * |
| ******************************************************************************/ |
| /*****************************************************************************/ |
| /** |
| * |
| * @file xsdps_options.c |
| * @addtogroup sdps_v2_5 |
| * @{ |
| * |
| * Contains API's for changing the various options in host and card. |
| * See xsdps.h for a detailed description of the device and driver. |
| * |
| * <pre> |
| * MODIFICATION HISTORY: |
| * |
| * Ver Who Date Changes |
| * ----- --- -------- ----------------------------------------------- |
| * 1.00a hk/sg 10/17/13 Initial release |
| * 2.1 hk 04/18/14 Increase sleep for eMMC switch command. |
| * Add sleep for microblaze designs. CR# 781117. |
| * 2.3 sk 09/23/14 Use XSdPs_Change_ClkFreq API whenever changing |
| * clock.CR# 816586. |
| * 2.5 sg 07/09/15 Added SD 3.0 features |
| * kvn 07/15/15 Modified the code according to MISRAC-2012. |
| * 2.7 sk 01/08/16 Added workaround for issue in auto tuning mode |
| * of SDR50, SDR104 and HS200. |
| * sk 02/16/16 Corrected the Tuning logic. |
| * sk 03/02/16 Configured the Tap Delay values for eMMC HS200 mode. |
| * |
| * </pre> |
| * |
| ******************************************************************************/ |
| |
| /***************************** Include Files *********************************/ |
| #include "xsdps.h" |
| /* |
| * The header sleep.h and API usleep() can only be used with an arm design. |
| * MB_Sleep() is used for microblaze design. |
| */ |
| #if defined (__arm__) || defined (__aarch64__) |
| |
| #include "sleep.h" |
| |
| #endif |
| |
| #ifdef __MICROBLAZE__ |
| |
| #include "microblaze_sleep.h" |
| |
| #endif |
| |
| /************************** Constant Definitions *****************************/ |
| |
| /**************************** Type Definitions *******************************/ |
| |
| /***************** Macros (Inline Functions) Definitions *********************/ |
| |
| /************************** Function Prototypes ******************************/ |
| s32 XSdPs_CmdTransfer(XSdPs *InstancePtr, u32 Cmd, u32 Arg, u32 BlkCnt); |
| void XSdPs_SetupADMA2DescTbl(XSdPs *InstancePtr, u32 BlkCnt, const u8 *Buff); |
| s32 XSdPs_Uhs_ModeInit(XSdPs *InstancePtr, u8 Mode); |
| static s32 XSdPs_Execute_Tuning(XSdPs *InstancePtr); |
| s32 XSdPs_Uhs_ModeInit(XSdPs *InstancePtr, u8 Mode); |
| #if defined (__arm__) || defined (__aarch64__) |
| void XSdPs_SetTapDelay(XSdPs *InstancePtr); |
| #endif |
| |
| /*****************************************************************************/ |
| /** |
| * Update Block size for read/write operations. |
| * |
| * @param InstancePtr is a pointer to the instance to be worked on. |
| * @param BlkSize - Block size passed by the user. |
| * |
| * @return None |
| * |
| ******************************************************************************/ |
| s32 XSdPs_SetBlkSize(XSdPs *InstancePtr, u16 BlkSize) |
| { |
| s32 Status; |
| u32 PresentStateReg; |
| |
| Xil_AssertNonvoid(InstancePtr != NULL); |
| Xil_AssertNonvoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY); |
| |
| PresentStateReg = XSdPs_ReadReg(InstancePtr->Config.BaseAddress, |
| XSDPS_PRES_STATE_OFFSET); |
| |
| if ((PresentStateReg & ((u32)XSDPS_PSR_INHIBIT_CMD_MASK | |
| (u32)XSDPS_PSR_INHIBIT_DAT_MASK | |
| (u32)XSDPS_PSR_WR_ACTIVE_MASK | (u32)XSDPS_PSR_RD_ACTIVE_MASK)) != 0U) { |
| Status = XST_FAILURE; |
| goto RETURN_PATH; |
| } |
| |
| |
| /* Send block write command */ |
| Status = XSdPs_CmdTransfer(InstancePtr, CMD16, BlkSize, 0U); |
| if (Status != XST_SUCCESS) { |
| Status = XST_FAILURE; |
| goto RETURN_PATH; |
| } |
| |
| Status = (s32)XSdPs_ReadReg(InstancePtr->Config.BaseAddress, |
| XSDPS_RESP0_OFFSET); |
| |
| /* Set block size to the value passed */ |
| XSdPs_WriteReg16(InstancePtr->Config.BaseAddress, XSDPS_BLK_SIZE_OFFSET, |
| BlkSize & XSDPS_BLK_SIZE_MASK); |
| |
| Status = XST_SUCCESS; |
| |
| RETURN_PATH: |
| return Status; |
| |
| } |
| |
| /*****************************************************************************/ |
| /** |
| * |
| * API to get bus width support by card. |
| * |
| * |
| * @param InstancePtr is a pointer to the XSdPs instance. |
| * @param SCR - buffer to store SCR register returned by card. |
| * |
| * @return |
| * - XST_SUCCESS if successful. |
| * - XST_FAILURE if fail. |
| * |
| * @note None. |
| * |
| ******************************************************************************/ |
| s32 XSdPs_Get_BusWidth(XSdPs *InstancePtr, u8 *SCR) |
| { |
| s32 Status; |
| u32 StatusReg; |
| u16 BlkCnt; |
| u16 BlkSize; |
| s32 LoopCnt; |
| |
| Xil_AssertNonvoid(InstancePtr != NULL); |
| Xil_AssertNonvoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY); |
| |
| for (LoopCnt = 0; LoopCnt < 8; LoopCnt++) { |
| SCR[LoopCnt] = 0U; |
| } |
| |
| /* Send block write command */ |
| Status = XSdPs_CmdTransfer(InstancePtr, CMD55, |
| InstancePtr->RelCardAddr, 0U); |
| if (Status != XST_SUCCESS) { |
| Status = XST_FAILURE; |
| goto RETURN_PATH; |
| } |
| |
| BlkCnt = XSDPS_SCR_BLKCNT; |
| BlkSize = XSDPS_SCR_BLKSIZE; |
| |
| /* Set block size to the value passed */ |
| BlkSize &= XSDPS_BLK_SIZE_MASK; |
| XSdPs_WriteReg16(InstancePtr->Config.BaseAddress, |
| XSDPS_BLK_SIZE_OFFSET, BlkSize); |
| |
| XSdPs_SetupADMA2DescTbl(InstancePtr, BlkCnt, SCR); |
| |
| XSdPs_WriteReg16(InstancePtr->Config.BaseAddress, |
| XSDPS_XFER_MODE_OFFSET, |
| XSDPS_TM_DAT_DIR_SEL_MASK | XSDPS_TM_DMA_EN_MASK); |
| |
| Xil_DCacheInvalidateRange((INTPTR)SCR, 8); |
| |
| Status = XSdPs_CmdTransfer(InstancePtr, ACMD51, 0U, BlkCnt); |
| if (Status != XST_SUCCESS) { |
| Status = XST_FAILURE; |
| goto RETURN_PATH; |
| } |
| |
| /* |
| * Check for transfer complete |
| * Polling for response for now |
| */ |
| do { |
| StatusReg = XSdPs_ReadReg16(InstancePtr->Config.BaseAddress, |
| XSDPS_NORM_INTR_STS_OFFSET); |
| if ((StatusReg & XSDPS_INTR_ERR_MASK) != 0U) { |
| /* Write to clear error bits */ |
| XSdPs_WriteReg16(InstancePtr->Config.BaseAddress, |
| XSDPS_ERR_INTR_STS_OFFSET, |
| XSDPS_ERROR_INTR_ALL_MASK); |
| Status = XST_FAILURE; |
| goto RETURN_PATH; |
| } |
| } while ((StatusReg & XSDPS_INTR_TC_MASK) == 0U); |
| |
| /* Write to clear bit */ |
| XSdPs_WriteReg16(InstancePtr->Config.BaseAddress, |
| XSDPS_NORM_INTR_STS_OFFSET, XSDPS_INTR_TC_MASK); |
| |
| Status = (s32)XSdPs_ReadReg(InstancePtr->Config.BaseAddress, |
| XSDPS_RESP0_OFFSET); |
| |
| Status = XST_SUCCESS; |
| |
| RETURN_PATH: |
| return Status; |
| |
| } |
| |
| /*****************************************************************************/ |
| /** |
| * |
| * API to set bus width to 4-bit in card and host |
| * |
| * |
| * @param InstancePtr is a pointer to the XSdPs instance. |
| * |
| * @return |
| * - XST_SUCCESS if successful. |
| * - XST_FAILURE if fail. |
| * |
| * @note None. |
| * |
| ******************************************************************************/ |
| s32 XSdPs_Change_BusWidth(XSdPs *InstancePtr) |
| { |
| s32 Status; |
| u32 StatusReg; |
| u32 Arg; |
| |
| Xil_AssertNonvoid(InstancePtr != NULL); |
| Xil_AssertNonvoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY); |
| |
| |
| if (InstancePtr->CardType == XSDPS_CARD_SD) { |
| |
| Status = XSdPs_CmdTransfer(InstancePtr, CMD55, InstancePtr->RelCardAddr, |
| 0U); |
| if (Status != XST_SUCCESS) { |
| Status = XST_FAILURE; |
| goto RETURN_PATH; |
| } |
| |
| InstancePtr->BusWidth = XSDPS_4_BIT_WIDTH; |
| |
| Arg = ((u32)InstancePtr->BusWidth); |
| |
| Status = XSdPs_CmdTransfer(InstancePtr, ACMD6, Arg, 0U); |
| if (Status != XST_SUCCESS) { |
| Status = XST_FAILURE; |
| goto RETURN_PATH; |
| } |
| } else { |
| |
| if ((InstancePtr->HC_Version == XSDPS_HC_SPEC_V3) |
| && (InstancePtr->CardType == XSDPS_CHIP_EMMC)) { |
| /* in case of eMMC data width 8-bit */ |
| InstancePtr->BusWidth = XSDPS_8_BIT_WIDTH; |
| } else { |
| InstancePtr->BusWidth = XSDPS_4_BIT_WIDTH; |
| } |
| |
| if (InstancePtr->BusWidth == XSDPS_8_BIT_WIDTH) { |
| Arg = XSDPS_MMC_8_BIT_BUS_ARG; |
| } else { |
| Arg = XSDPS_MMC_4_BIT_BUS_ARG; |
| } |
| |
| Status = XSdPs_CmdTransfer(InstancePtr, CMD6, Arg, 0U); |
| if (Status != XST_SUCCESS) { |
| Status = XST_FAILURE; |
| goto RETURN_PATH; |
| } |
| |
| /* Check for transfer complete */ |
| do { |
| StatusReg = XSdPs_ReadReg16(InstancePtr->Config.BaseAddress, |
| XSDPS_NORM_INTR_STS_OFFSET); |
| if ((StatusReg & XSDPS_INTR_ERR_MASK) != 0U) { |
| /* Write to clear error bits */ |
| XSdPs_WriteReg16(InstancePtr->Config.BaseAddress, |
| XSDPS_ERR_INTR_STS_OFFSET, |
| XSDPS_ERROR_INTR_ALL_MASK); |
| Status = XST_FAILURE; |
| goto RETURN_PATH; |
| } |
| } while((StatusReg & XSDPS_INTR_TC_MASK) == 0U); |
| |
| /* Write to clear bit */ |
| XSdPs_WriteReg16(InstancePtr->Config.BaseAddress, |
| XSDPS_NORM_INTR_STS_OFFSET, XSDPS_INTR_TC_MASK); |
| } |
| |
| #if defined (__arm__) || defined (__aarch64__) |
| |
| usleep(XSDPS_MMC_DELAY_FOR_SWITCH); |
| |
| #endif |
| |
| #ifdef __MICROBLAZE__ |
| |
| /* 2 msec delay */ |
| MB_Sleep(2); |
| |
| #endif |
| |
| StatusReg = XSdPs_ReadReg8(InstancePtr->Config.BaseAddress, |
| XSDPS_HOST_CTRL1_OFFSET); |
| |
| /* Width setting in controller */ |
| if (InstancePtr->BusWidth == XSDPS_8_BIT_WIDTH) { |
| StatusReg |= XSDPS_HC_EXT_BUS_WIDTH; |
| } else { |
| StatusReg |= XSDPS_HC_WIDTH_MASK; |
| } |
| |
| XSdPs_WriteReg8(InstancePtr->Config.BaseAddress, |
| XSDPS_HOST_CTRL1_OFFSET, |
| (u8)StatusReg); |
| |
| Status = (s32)XSdPs_ReadReg(InstancePtr->Config.BaseAddress, |
| XSDPS_RESP0_OFFSET); |
| |
| Status = XST_SUCCESS; |
| |
| RETURN_PATH: |
| return Status; |
| |
| } |
| |
| /*****************************************************************************/ |
| /** |
| * |
| * API to get bus speed supported by card. |
| * |
| * |
| * @param InstancePtr is a pointer to the XSdPs instance. |
| * @param ReadBuff - buffer to store function group support data |
| * returned by card. |
| * |
| * @return |
| * - XST_SUCCESS if successful. |
| * - XST_FAILURE if fail. |
| * |
| * @note None. |
| * |
| ******************************************************************************/ |
| s32 XSdPs_Get_BusSpeed(XSdPs *InstancePtr, u8 *ReadBuff) |
| { |
| s32 Status; |
| u32 StatusReg; |
| u32 Arg; |
| u16 BlkCnt; |
| u16 BlkSize; |
| s32 LoopCnt; |
| |
| Xil_AssertNonvoid(InstancePtr != NULL); |
| Xil_AssertNonvoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY); |
| |
| for (LoopCnt = 0; LoopCnt < 64; LoopCnt++) { |
| ReadBuff[LoopCnt] = 0U; |
| } |
| |
| BlkCnt = XSDPS_SWITCH_CMD_BLKCNT; |
| BlkSize = XSDPS_SWITCH_CMD_BLKSIZE; |
| BlkSize &= XSDPS_BLK_SIZE_MASK; |
| XSdPs_WriteReg16(InstancePtr->Config.BaseAddress, |
| XSDPS_BLK_SIZE_OFFSET, BlkSize); |
| |
| XSdPs_SetupADMA2DescTbl(InstancePtr, BlkCnt, ReadBuff); |
| |
| XSdPs_WriteReg16(InstancePtr->Config.BaseAddress, |
| XSDPS_XFER_MODE_OFFSET, |
| XSDPS_TM_DAT_DIR_SEL_MASK | XSDPS_TM_DMA_EN_MASK); |
| |
| Arg = XSDPS_SWITCH_CMD_HS_GET; |
| |
| Xil_DCacheInvalidateRange((INTPTR)ReadBuff, 64); |
| |
| Status = XSdPs_CmdTransfer(InstancePtr, CMD6, Arg, 1U); |
| if (Status != XST_SUCCESS) { |
| Status = XST_FAILURE; |
| goto RETURN_PATH; |
| } |
| |
| /* |
| * Check for transfer complete |
| * Polling for response for now |
| */ |
| do { |
| StatusReg = XSdPs_ReadReg16(InstancePtr->Config.BaseAddress, |
| XSDPS_NORM_INTR_STS_OFFSET); |
| if ((StatusReg & XSDPS_INTR_ERR_MASK) != 0U) { |
| /* Write to clear error bits */ |
| XSdPs_WriteReg16(InstancePtr->Config.BaseAddress, |
| XSDPS_ERR_INTR_STS_OFFSET, |
| XSDPS_ERROR_INTR_ALL_MASK); |
| Status = XST_FAILURE; |
| goto RETURN_PATH; |
| } |
| } while ((StatusReg & XSDPS_INTR_TC_MASK) == 0U); |
| |
| /* Write to clear bit */ |
| XSdPs_WriteReg16(InstancePtr->Config.BaseAddress, |
| XSDPS_NORM_INTR_STS_OFFSET, XSDPS_INTR_TC_MASK); |
| |
| Status = (s32)XSdPs_ReadReg(InstancePtr->Config.BaseAddress, |
| XSDPS_RESP0_OFFSET); |
| |
| Status = XST_SUCCESS; |
| |
| RETURN_PATH: |
| return Status; |
| |
| } |
| |
| /*****************************************************************************/ |
| /** |
| * |
| * API to set high speed in card and host. Changes clock in host accordingly. |
| * |
| * |
| * @param InstancePtr is a pointer to the XSdPs instance. |
| * |
| * @return |
| * - XST_SUCCESS if successful. |
| * - XST_FAILURE if fail. |
| * |
| * @note None. |
| * |
| ******************************************************************************/ |
| s32 XSdPs_Change_BusSpeed(XSdPs *InstancePtr) |
| { |
| s32 Status; |
| u32 StatusReg; |
| u32 Arg; |
| u32 ClockReg; |
| u16 BlkCnt; |
| u16 BlkSize; |
| u8 ReadBuff[64]; |
| |
| Xil_AssertNonvoid(InstancePtr != NULL); |
| Xil_AssertNonvoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY); |
| |
| if (InstancePtr->CardType == XSDPS_CARD_SD) { |
| |
| BlkCnt = XSDPS_SWITCH_CMD_BLKCNT; |
| BlkSize = XSDPS_SWITCH_CMD_BLKSIZE; |
| BlkSize &= XSDPS_BLK_SIZE_MASK; |
| XSdPs_WriteReg16(InstancePtr->Config.BaseAddress, |
| XSDPS_BLK_SIZE_OFFSET, BlkSize); |
| |
| XSdPs_SetupADMA2DescTbl(InstancePtr, BlkCnt, ReadBuff); |
| |
| Xil_DCacheFlushRange((INTPTR)ReadBuff, 64); |
| |
| XSdPs_WriteReg16(InstancePtr->Config.BaseAddress, |
| XSDPS_XFER_MODE_OFFSET, |
| XSDPS_TM_DAT_DIR_SEL_MASK | XSDPS_TM_DMA_EN_MASK); |
| |
| Arg = XSDPS_SWITCH_CMD_HS_SET; |
| |
| Status = XSdPs_CmdTransfer(InstancePtr, CMD6, Arg, 1U); |
| if (Status != XST_SUCCESS) { |
| Status = XST_FAILURE; |
| goto RETURN_PATH; |
| } |
| |
| /* |
| * Check for transfer complete |
| * Polling for response for now |
| */ |
| do { |
| StatusReg = XSdPs_ReadReg16(InstancePtr->Config.BaseAddress, |
| XSDPS_NORM_INTR_STS_OFFSET); |
| if ((StatusReg & XSDPS_INTR_ERR_MASK) != 0U) { |
| /* Write to clear error bits */ |
| XSdPs_WriteReg16(InstancePtr->Config.BaseAddress, |
| XSDPS_ERR_INTR_STS_OFFSET, |
| XSDPS_ERROR_INTR_ALL_MASK); |
| Status = XST_FAILURE; |
| goto RETURN_PATH; |
| } |
| } while ((StatusReg & XSDPS_INTR_TC_MASK) == 0U); |
| |
| /* Write to clear bit */ |
| XSdPs_WriteReg16(InstancePtr->Config.BaseAddress, |
| XSDPS_NORM_INTR_STS_OFFSET, XSDPS_INTR_TC_MASK); |
| |
| /* Change the clock frequency to 50 MHz */ |
| InstancePtr->BusSpeed = XSDPS_CLK_50_MHZ; |
| Status = XSdPs_Change_ClkFreq(InstancePtr, InstancePtr->BusSpeed); |
| if (Status != XST_SUCCESS) { |
| Status = XST_FAILURE; |
| goto RETURN_PATH; |
| } |
| |
| } else if (InstancePtr->CardType == XSDPS_CARD_MMC) { |
| Arg = XSDPS_MMC_HIGH_SPEED_ARG; |
| |
| Status = XSdPs_CmdTransfer(InstancePtr, CMD6, Arg, 0U); |
| if (Status != XST_SUCCESS) { |
| Status = XST_FAILURE; |
| goto RETURN_PATH; |
| } |
| |
| /* |
| * Check for transfer complete |
| */ |
| do { |
| StatusReg = XSdPs_ReadReg16(InstancePtr->Config.BaseAddress, |
| XSDPS_NORM_INTR_STS_OFFSET); |
| if ((StatusReg & XSDPS_INTR_ERR_MASK) != 0U) { |
| /* |
| * Write to clear error bits |
| */ |
| XSdPs_WriteReg16(InstancePtr->Config.BaseAddress, |
| XSDPS_ERR_INTR_STS_OFFSET, |
| XSDPS_ERROR_INTR_ALL_MASK); |
| Status = XST_FAILURE; |
| goto RETURN_PATH; |
| } |
| } while ((StatusReg & XSDPS_INTR_TC_MASK) == 0U); |
| |
| /* |
| * Write to clear bit |
| */ |
| XSdPs_WriteReg16(InstancePtr->Config.BaseAddress, |
| XSDPS_NORM_INTR_STS_OFFSET, XSDPS_INTR_TC_MASK); |
| |
| /* Change the clock frequency to 52 MHz */ |
| InstancePtr->BusSpeed = XSDPS_CLK_52_MHZ; |
| Status = XSdPs_Change_ClkFreq(InstancePtr, XSDPS_CLK_52_MHZ); |
| if (Status != XST_SUCCESS) { |
| Status = XST_FAILURE; |
| goto RETURN_PATH; |
| } |
| } else { |
| Arg = XSDPS_MMC_HS200_ARG; |
| |
| Status = XSdPs_CmdTransfer(InstancePtr, CMD6, Arg, 0U); |
| if (Status != XST_SUCCESS) { |
| Status = XST_FAILURE; |
| goto RETURN_PATH; |
| } |
| |
| /* |
| * Check for transfer complete |
| */ |
| do { |
| StatusReg = XSdPs_ReadReg16(InstancePtr->Config.BaseAddress, |
| XSDPS_NORM_INTR_STS_OFFSET); |
| if ((StatusReg & XSDPS_INTR_ERR_MASK) != 0U) { |
| /* |
| * Write to clear error bits |
| */ |
| XSdPs_WriteReg16(InstancePtr->Config.BaseAddress, |
| XSDPS_ERR_INTR_STS_OFFSET, |
| XSDPS_ERROR_INTR_ALL_MASK); |
| Status = XST_FAILURE; |
| goto RETURN_PATH; |
| } |
| } while ((StatusReg & XSDPS_INTR_TC_MASK) == 0U); |
| |
| /* |
| * Write to clear bit |
| */ |
| XSdPs_WriteReg16(InstancePtr->Config.BaseAddress, |
| XSDPS_NORM_INTR_STS_OFFSET, XSDPS_INTR_TC_MASK); |
| |
| /* Change the clock frequency to 200 MHz */ |
| InstancePtr->BusSpeed = XSDPS_MMC_HS200_MAX_CLK; |
| |
| Status = XSdPs_Change_ClkFreq(InstancePtr, InstancePtr->BusSpeed); |
| if (Status != XST_SUCCESS) { |
| Status = XST_FAILURE; |
| goto RETURN_PATH; |
| } |
| Status = XSdPs_Execute_Tuning(InstancePtr); |
| if (Status != XST_SUCCESS) { |
| Status = XST_FAILURE; |
| goto RETURN_PATH; |
| } |
| #if defined (__arm__) || defined (__aarch64__) |
| /* Program the Tap delays */ |
| XSdPs_SetTapDelay(InstancePtr); |
| #endif |
| } |
| |
| #if defined (__arm__) || defined (__aarch64__) |
| |
| usleep(XSDPS_MMC_DELAY_FOR_SWITCH); |
| |
| #endif |
| |
| #ifdef __MICROBLAZE__ |
| |
| /* 2 msec delay */ |
| MB_Sleep(2); |
| |
| #endif |
| |
| StatusReg = (s32)XSdPs_ReadReg8(InstancePtr->Config.BaseAddress, |
| XSDPS_HOST_CTRL1_OFFSET); |
| StatusReg |= XSDPS_HC_SPEED_MASK; |
| XSdPs_WriteReg8(InstancePtr->Config.BaseAddress, |
| XSDPS_HOST_CTRL1_OFFSET, (u8)StatusReg); |
| |
| Status = (s32)XSdPs_ReadReg(InstancePtr->Config.BaseAddress, |
| XSDPS_RESP0_OFFSET); |
| |
| |
| Status = XST_SUCCESS; |
| |
| RETURN_PATH: |
| return Status; |
| |
| } |
| |
| /*****************************************************************************/ |
| /** |
| * |
| * API to change clock freq to given value. |
| * |
| * |
| * @param InstancePtr is a pointer to the XSdPs instance. |
| * @param SelFreq - Clock frequency in Hz. |
| * |
| * @return None |
| * |
| * @note This API will change clock frequency to the value less than |
| * or equal to the given value using the permissible dividors. |
| * |
| ******************************************************************************/ |
| s32 XSdPs_Change_ClkFreq(XSdPs *InstancePtr, u32 SelFreq) |
| { |
| u16 ClockReg; |
| u16 DivCnt; |
| u16 Divisor = 0U; |
| u16 ExtDivisor; |
| u16 ClkLoopCnt; |
| s32 Status; |
| u16 ReadReg; |
| |
| Xil_AssertNonvoid(InstancePtr != NULL); |
| Xil_AssertNonvoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY); |
| |
| /* Disable clock */ |
| ClockReg = XSdPs_ReadReg16(InstancePtr->Config.BaseAddress, |
| XSDPS_CLK_CTRL_OFFSET); |
| ClockReg &= ~(XSDPS_CC_SD_CLK_EN_MASK | XSDPS_CC_INT_CLK_EN_MASK); |
| XSdPs_WriteReg16(InstancePtr->Config.BaseAddress, |
| XSDPS_CLK_CTRL_OFFSET, ClockReg); |
| |
| if (InstancePtr->HC_Version == XSDPS_HC_SPEC_V3) { |
| /* Calculate divisor */ |
| for (DivCnt = 0x1U; DivCnt <= XSDPS_CC_EXT_MAX_DIV_CNT;DivCnt++) { |
| if (((InstancePtr->Config.InputClockHz) / DivCnt) <= SelFreq) { |
| Divisor = DivCnt >> 1; |
| break; |
| } |
| } |
| |
| if (DivCnt > XSDPS_CC_EXT_MAX_DIV_CNT) { |
| /* No valid divisor found for given frequency */ |
| Status = XST_FAILURE; |
| goto RETURN_PATH; |
| } |
| } else { |
| /* Calculate divisor */ |
| DivCnt = 0x1U; |
| while (DivCnt <= XSDPS_CC_MAX_DIV_CNT) { |
| if (((InstancePtr->Config.InputClockHz) / DivCnt) <= SelFreq) { |
| Divisor = DivCnt / 2U; |
| break; |
| } |
| DivCnt = DivCnt << 1U; |
| } |
| |
| if (DivCnt > XSDPS_CC_MAX_DIV_CNT) { |
| /* No valid divisor found for given frequency */ |
| Status = XST_FAILURE; |
| goto RETURN_PATH; |
| } |
| } |
| |
| /* Set clock divisor */ |
| if (InstancePtr->HC_Version == XSDPS_HC_SPEC_V3) { |
| ClockReg = XSdPs_ReadReg16(InstancePtr->Config.BaseAddress, |
| XSDPS_CLK_CTRL_OFFSET); |
| ClockReg &= ~(XSDPS_CC_SDCLK_FREQ_SEL_MASK | |
| XSDPS_CC_SDCLK_FREQ_SEL_EXT_MASK); |
| |
| ExtDivisor = Divisor >> 8; |
| ExtDivisor <<= XSDPS_CC_EXT_DIV_SHIFT; |
| ExtDivisor &= XSDPS_CC_SDCLK_FREQ_SEL_EXT_MASK; |
| |
| Divisor <<= XSDPS_CC_DIV_SHIFT; |
| Divisor &= XSDPS_CC_SDCLK_FREQ_SEL_MASK; |
| ClockReg |= Divisor | ExtDivisor | (u16)XSDPS_CC_INT_CLK_EN_MASK; |
| XSdPs_WriteReg16(InstancePtr->Config.BaseAddress, XSDPS_CLK_CTRL_OFFSET, |
| ClockReg); |
| } else { |
| ClockReg = XSdPs_ReadReg16(InstancePtr->Config.BaseAddress, |
| XSDPS_CLK_CTRL_OFFSET); |
| ClockReg &= (~XSDPS_CC_SDCLK_FREQ_SEL_MASK); |
| |
| Divisor <<= XSDPS_CC_DIV_SHIFT; |
| Divisor &= XSDPS_CC_SDCLK_FREQ_SEL_MASK; |
| ClockReg |= Divisor | (u16)XSDPS_CC_INT_CLK_EN_MASK; |
| XSdPs_WriteReg16(InstancePtr->Config.BaseAddress, XSDPS_CLK_CTRL_OFFSET, |
| ClockReg); |
| } |
| |
| /* Wait for internal clock to stabilize */ |
| ReadReg = XSdPs_ReadReg16(InstancePtr->Config.BaseAddress, |
| XSDPS_CLK_CTRL_OFFSET); |
| while((ReadReg & XSDPS_CC_INT_CLK_STABLE_MASK) == 0U) { |
| ReadReg = XSdPs_ReadReg16(InstancePtr->Config.BaseAddress, |
| XSDPS_CLK_CTRL_OFFSET);; |
| } |
| |
| /* Enable SD clock */ |
| ClockReg = XSdPs_ReadReg16(InstancePtr->Config.BaseAddress, |
| XSDPS_CLK_CTRL_OFFSET); |
| XSdPs_WriteReg16(InstancePtr->Config.BaseAddress, |
| XSDPS_CLK_CTRL_OFFSET, |
| ClockReg | XSDPS_CC_SD_CLK_EN_MASK); |
| |
| Status = XST_SUCCESS; |
| |
| RETURN_PATH: |
| return Status; |
| |
| } |
| |
| /*****************************************************************************/ |
| /** |
| * |
| * API to send pullup command to card before using DAT line 3(using 4-bit bus) |
| * |
| * |
| * @param InstancePtr is a pointer to the XSdPs instance. |
| * |
| * @return |
| * - XST_SUCCESS if successful. |
| * - XST_FAILURE if fail. |
| * |
| * @note None. |
| * |
| ******************************************************************************/ |
| s32 XSdPs_Pullup(XSdPs *InstancePtr) |
| { |
| s32 Status; |
| |
| Xil_AssertNonvoid(InstancePtr != NULL); |
| Xil_AssertNonvoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY); |
| |
| Status = XSdPs_CmdTransfer(InstancePtr, CMD55, |
| InstancePtr->RelCardAddr, 0U); |
| if (Status != XST_SUCCESS) { |
| Status = XST_FAILURE; |
| goto RETURN_PATH; |
| } |
| |
| Status = XSdPs_CmdTransfer(InstancePtr, ACMD42, 0U, 0U); |
| if (Status != XST_SUCCESS) { |
| Status = XST_FAILURE; |
| goto RETURN_PATH; |
| } |
| |
| Status = XST_SUCCESS; |
| |
| RETURN_PATH: |
| return Status; |
| |
| } |
| |
| /*****************************************************************************/ |
| /** |
| * |
| * API to get EXT_CSD register of eMMC. |
| * |
| * |
| * @param InstancePtr is a pointer to the XSdPs instance. |
| * @param ReadBuff - buffer to store EXT_CSD |
| * |
| * @return |
| * - XST_SUCCESS if successful. |
| * - XST_FAILURE if fail. |
| * |
| * @note None. |
| * |
| ******************************************************************************/ |
| s32 XSdPs_Get_Mmc_ExtCsd(XSdPs *InstancePtr, u8 *ReadBuff) |
| { |
| s32 Status; |
| u32 StatusReg; |
| u32 Arg = 0U; |
| u16 BlkCnt; |
| u16 BlkSize; |
| s32 LoopCnt; |
| |
| Xil_AssertNonvoid(InstancePtr != NULL); |
| Xil_AssertNonvoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY); |
| |
| for (LoopCnt = 0; LoopCnt < 512; LoopCnt++) { |
| ReadBuff[LoopCnt] = 0U; |
| } |
| |
| BlkCnt = XSDPS_EXT_CSD_CMD_BLKCNT; |
| BlkSize = XSDPS_EXT_CSD_CMD_BLKSIZE; |
| BlkSize &= XSDPS_BLK_SIZE_MASK; |
| XSdPs_WriteReg16(InstancePtr->Config.BaseAddress, |
| XSDPS_BLK_SIZE_OFFSET, BlkSize); |
| |
| XSdPs_SetupADMA2DescTbl(InstancePtr, BlkCnt, ReadBuff); |
| |
| Xil_DCacheInvalidateRange((INTPTR)ReadBuff, 512U); |
| |
| XSdPs_WriteReg16(InstancePtr->Config.BaseAddress, |
| XSDPS_XFER_MODE_OFFSET, |
| XSDPS_TM_DAT_DIR_SEL_MASK | XSDPS_TM_DMA_EN_MASK); |
| |
| |
| /* Send SEND_EXT_CSD command */ |
| Status = XSdPs_CmdTransfer(InstancePtr, CMD8, Arg, 1U); |
| if (Status != XST_SUCCESS) { |
| Status = XST_FAILURE; |
| goto RETURN_PATH; |
| } |
| |
| /* |
| * Check for transfer complete |
| * Polling for response for now |
| */ |
| do { |
| StatusReg = XSdPs_ReadReg16(InstancePtr->Config.BaseAddress, |
| XSDPS_NORM_INTR_STS_OFFSET); |
| if ((StatusReg & XSDPS_INTR_ERR_MASK) != 0U) { |
| /* Write to clear error bits */ |
| XSdPs_WriteReg16(InstancePtr->Config.BaseAddress, |
| XSDPS_ERR_INTR_STS_OFFSET, |
| XSDPS_ERROR_INTR_ALL_MASK); |
| Status = XST_FAILURE; |
| goto RETURN_PATH; |
| } |
| } while ((StatusReg & XSDPS_INTR_TC_MASK) == 0U); |
| |
| /* Write to clear bit */ |
| XSdPs_WriteReg16(InstancePtr->Config.BaseAddress, |
| XSDPS_NORM_INTR_STS_OFFSET, XSDPS_INTR_TC_MASK); |
| |
| Status = (s32)XSdPs_ReadReg(InstancePtr->Config.BaseAddress, |
| XSDPS_RESP0_OFFSET); |
| |
| Status = XST_SUCCESS; |
| |
| RETURN_PATH: |
| return Status; |
| |
| } |
| |
| |
| /*****************************************************************************/ |
| /** |
| * |
| * API to UHS-I mode initialization |
| * |
| * |
| * @param InstancePtr is a pointer to the XSdPs instance. |
| * @param Mode UHS-I mode |
| * |
| * @return |
| * - XST_SUCCESS if successful. |
| * - XST_FAILURE if fail. |
| * |
| * @note None. |
| * |
| ******************************************************************************/ |
| s32 XSdPs_Uhs_ModeInit(XSdPs *InstancePtr, u8 Mode) |
| { |
| s32 Status; |
| u16 StatusReg; |
| u16 CtrlReg; |
| u32 Arg; |
| u16 BlkCnt; |
| u16 BlkSize; |
| u8 ReadBuff[64]; |
| |
| Xil_AssertNonvoid(InstancePtr != NULL); |
| Xil_AssertNonvoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY); |
| |
| /* Drive strength */ |
| |
| /* Bus speed mode selection */ |
| BlkCnt = XSDPS_SWITCH_CMD_BLKCNT; |
| BlkSize = XSDPS_SWITCH_CMD_BLKSIZE; |
| BlkSize &= XSDPS_BLK_SIZE_MASK; |
| XSdPs_WriteReg16(InstancePtr->Config.BaseAddress, XSDPS_BLK_SIZE_OFFSET, |
| BlkSize); |
| |
| XSdPs_SetupADMA2DescTbl(InstancePtr, BlkCnt, ReadBuff); |
| |
| Xil_DCacheFlushRange((INTPTR)ReadBuff, 64); |
| |
| XSdPs_WriteReg16(InstancePtr->Config.BaseAddress, XSDPS_XFER_MODE_OFFSET, |
| XSDPS_TM_DAT_DIR_SEL_MASK | XSDPS_TM_DMA_EN_MASK); |
| |
| switch (Mode) { |
| case 0U: |
| Arg = XSDPS_SWITCH_CMD_SDR12_SET; |
| InstancePtr->BusSpeed = XSDPS_SD_SDR12_MAX_CLK; |
| break; |
| case 1U: |
| Arg = XSDPS_SWITCH_CMD_SDR25_SET; |
| InstancePtr->BusSpeed = XSDPS_SD_SDR25_MAX_CLK; |
| break; |
| case 2U: |
| Arg = XSDPS_SWITCH_CMD_SDR50_SET; |
| InstancePtr->BusSpeed = XSDPS_SD_SDR50_MAX_CLK; |
| break; |
| case 3U: |
| Arg = XSDPS_SWITCH_CMD_SDR104_SET; |
| InstancePtr->BusSpeed = XSDPS_SD_SDR104_MAX_CLK; |
| break; |
| case 4U: |
| Arg = XSDPS_SWITCH_CMD_DDR50_SET; |
| InstancePtr->BusSpeed = XSDPS_SD_DDR50_MAX_CLK; |
| break; |
| default: |
| Status = XST_FAILURE; |
| goto RETURN_PATH; |
| break; |
| } |
| |
| Status = XSdPs_CmdTransfer(InstancePtr, CMD6, Arg, 1U); |
| if (Status != XST_SUCCESS) { |
| Status = XST_FAILURE; |
| goto RETURN_PATH; |
| } |
| |
| /* |
| * Check for transfer complete |
| * Polling for response for now |
| */ |
| do { |
| StatusReg = XSdPs_ReadReg16(InstancePtr->Config.BaseAddress, |
| XSDPS_NORM_INTR_STS_OFFSET); |
| if ((StatusReg & XSDPS_INTR_ERR_MASK) != 0U) { |
| /* Write to clear error bits */ |
| XSdPs_WriteReg16(InstancePtr->Config.BaseAddress, |
| XSDPS_ERR_INTR_STS_OFFSET, XSDPS_ERROR_INTR_ALL_MASK); |
| Status = XST_FAILURE; |
| goto RETURN_PATH; |
| } |
| } while ((StatusReg & XSDPS_INTR_TC_MASK) == 0U); |
| |
| /* Write to clear bit */ |
| XSdPs_WriteReg16(InstancePtr->Config.BaseAddress, |
| XSDPS_NORM_INTR_STS_OFFSET, XSDPS_INTR_TC_MASK); |
| |
| |
| /* Current limit */ |
| |
| /* Set UHS mode in controller */ |
| CtrlReg = XSdPs_ReadReg16(InstancePtr->Config.BaseAddress, |
| XSDPS_HOST_CTRL2_OFFSET); |
| CtrlReg &= (u16)(~XSDPS_HC2_UHS_MODE_MASK); |
| CtrlReg |= Mode; |
| XSdPs_WriteReg16(InstancePtr->Config.BaseAddress, |
| XSDPS_HOST_CTRL2_OFFSET, CtrlReg); |
| |
| /* Change the clock frequency */ |
| Status = XSdPs_Change_ClkFreq(InstancePtr, InstancePtr->BusSpeed); |
| if (Status != XST_SUCCESS) { |
| Status = XST_FAILURE; |
| goto RETURN_PATH; |
| } |
| |
| if((Mode == XSDPS_UHS_SPEED_MODE_SDR104) || |
| (Mode == XSDPS_UHS_SPEED_MODE_DDR50)) { |
| /* Send tuning pattern */ |
| Status = XSdPs_Execute_Tuning(InstancePtr); |
| if (Status != XST_SUCCESS) { |
| Status = XST_FAILURE; |
| goto RETURN_PATH; |
| } |
| } |
| |
| Status = XST_SUCCESS; |
| |
| RETURN_PATH: |
| return Status; |
| } |
| |
| static s32 XSdPs_Execute_Tuning(XSdPs *InstancePtr) |
| { |
| s32 Status; |
| u32 StatusReg; |
| u32 Arg; |
| u16 BlkCnt; |
| u16 BlkSize; |
| s32 LoopCnt; |
| u16 CtrlReg; |
| u8 TuningCount; |
| |
| Xil_AssertNonvoid(InstancePtr != NULL); |
| Xil_AssertNonvoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY); |
| |
| BlkCnt = XSDPS_TUNING_CMD_BLKCNT; |
| BlkSize = XSDPS_TUNING_CMD_BLKSIZE; |
| if(InstancePtr->BusWidth == XSDPS_8_BIT_WIDTH) |
| { |
| BlkSize = BlkSize*2U; |
| } |
| BlkSize &= XSDPS_BLK_SIZE_MASK; |
| XSdPs_WriteReg16(InstancePtr->Config.BaseAddress, XSDPS_BLK_SIZE_OFFSET, |
| BlkSize); |
| |
| XSdPs_WriteReg16(InstancePtr->Config.BaseAddress, XSDPS_XFER_MODE_OFFSET, |
| XSDPS_TM_DAT_DIR_SEL_MASK); |
| |
| CtrlReg = XSdPs_ReadReg16(InstancePtr->Config.BaseAddress, |
| XSDPS_HOST_CTRL2_OFFSET); |
| CtrlReg |= XSDPS_HC2_EXEC_TNG_MASK; |
| XSdPs_WriteReg16(InstancePtr->Config.BaseAddress, |
| XSDPS_HOST_CTRL2_OFFSET, CtrlReg); |
| |
| for (TuningCount = 0U; TuningCount < MAX_TUNING_COUNT; TuningCount++) { |
| |
| if (InstancePtr->CardType == XSDPS_CARD_SD) { |
| Status = XSdPs_CmdTransfer(InstancePtr, CMD19, 0U, 1U); |
| } else { |
| Status = XSdPs_CmdTransfer(InstancePtr, CMD21, 0U, 1U); |
| } |
| |
| if (Status != XST_SUCCESS) { |
| Status = XST_FAILURE; |
| goto RETURN_PATH; |
| } |
| |
| if ((XSdPs_ReadReg16(InstancePtr->Config.BaseAddress, |
| XSDPS_HOST_CTRL2_OFFSET) & XSDPS_HC2_EXEC_TNG_MASK) == 0U) { |
| break; |
| } |
| } |
| |
| if ((XSdPs_ReadReg16(InstancePtr->Config.BaseAddress, |
| XSDPS_HOST_CTRL2_OFFSET) & XSDPS_HC2_SAMP_CLK_SEL_MASK) == 0U) { |
| Status = XST_FAILURE; |
| goto RETURN_PATH; |
| } |
| |
| /* |
| * As per controller erratum, program the "SDCLK Frequency |
| * Select" of clock control register with a value, say |
| * clock/2. Wait for the Internal clock stable and program |
| * the desired frequency. |
| */ |
| CtrlReg = XSdPs_ReadReg16(InstancePtr->Config.BaseAddress, |
| XSDPS_HOST_CTRL2_OFFSET); |
| if ((CtrlReg & XSDPS_HC2_SAMP_CLK_SEL_MASK) != 0U) { |
| Status = XSdPs_Change_ClkFreq(InstancePtr, InstancePtr->BusSpeed/2); |
| if (Status != XST_SUCCESS) { |
| goto RETURN_PATH ; |
| } |
| Status = XSdPs_Change_ClkFreq(InstancePtr, InstancePtr->BusSpeed); |
| if (Status != XST_SUCCESS) { |
| goto RETURN_PATH ; |
| } |
| |
| } |
| |
| Status = XST_SUCCESS; |
| |
| RETURN_PATH: return Status; |
| |
| } |
| |
| #if defined (__arm__) || defined (__aarch64__) |
| /*****************************************************************************/ |
| /** |
| * |
| * API to set Tap Delay w.r.t speed modes |
| * |
| * |
| * @param InstancePtr is a pointer to the XSdPs instance. |
| * |
| * @return None |
| * |
| * @note None. |
| * |
| ******************************************************************************/ |
| void XSdPs_SetTapDelay(XSdPs *InstancePtr) |
| { |
| u32 DllCtrl, TapDelay; |
| if (InstancePtr->Config.DeviceId == XPAR_XSDPS_0_DEVICE_ID) { |
| DllCtrl = XSdPs_ReadReg(XPS_SYS_CTRL_BASEADDR, SD_DLL_CTRL); |
| DllCtrl |= SD0_DLL_RST; |
| XSdPs_WriteReg(XPS_SYS_CTRL_BASEADDR, SD_DLL_CTRL, DllCtrl); |
| if(InstancePtr->BusSpeed == XSDPS_MMC_HS200_MAX_CLK) { |
| /* Program the ITAPDLY */ |
| TapDelay = XSdPs_ReadReg(XPS_SYS_CTRL_BASEADDR, SD_ITAPDLY); |
| TapDelay |= SD0_ITAPCHGWIN; |
| XSdPs_WriteReg(XPS_SYS_CTRL_BASEADDR, SD_ITAPDLY, TapDelay); |
| TapDelay |= SD0_ITAPDLYENA; |
| XSdPs_WriteReg(XPS_SYS_CTRL_BASEADDR, SD_ITAPDLY, TapDelay); |
| TapDelay &= ~SD0_ITAPCHGWIN; |
| XSdPs_WriteReg(XPS_SYS_CTRL_BASEADDR, SD_ITAPDLY, TapDelay); |
| /* Program the OTAPDLY */ |
| TapDelay = XSdPs_ReadReg(XPS_SYS_CTRL_BASEADDR, SD_OTAPDLYSEL); |
| TapDelay |= SD0_OTAPDLYENA; |
| XSdPs_WriteReg(XPS_SYS_CTRL_BASEADDR, SD_OTAPDLYSEL, TapDelay); |
| TapDelay |= SD0_OTAPDLYSEL_HS200; |
| XSdPs_WriteReg(XPS_SYS_CTRL_BASEADDR, SD_OTAPDLYSEL, TapDelay); |
| } |
| DllCtrl &= ~SD0_DLL_RST; |
| XSdPs_WriteReg(XPS_SYS_CTRL_BASEADDR, SD_DLL_CTRL, DllCtrl); |
| } |
| } |
| #endif |
| /** @} */ |