+++ /dev/null
-/******************************************************************************
-*
-* 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.c
-* @addtogroup sdps_v2_5
-* @{
-*
-* Contains the interface functions of the XSdPs driver.
-* 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
-* 2.0 hk 12/13/13 Added check for arm to use sleep.h and its API's
-* 2.1 hk 04/18/14 Add sleep for microblaze designs. CR# 781117.
-* 2.2 hk 07/28/14 Make changes to enable use of data cache.
-* 2.3 sk 09/23/14 Send command for relative card address
-* when re-initialization is done.CR# 819614.
-* Use XSdPs_Change_ClkFreq API whenever changing
-* clock.CR# 816586.
-* 2.4 sk 12/04/14 Added support for micro SD without
-* WP/CD. CR# 810655.
-* Checked for DAT Inhibit mask instead of CMD
-* Inhibit mask in Cmd Transfer API.
-* Added Support for SD Card v1.0
-* 2.5 sg 07/09/15 Added SD 3.0 features
-* kvn 07/15/15 Modified the code according to MISRAC-2012.
-* 2.6 sk 10/12/15 Added support for SD card v1.0 CR# 840601.
-* 2.7 sk 11/24/15 Considered the slot type befoe checking CD/WP pins.
-* sk 12/10/15 Added support for MMC cards.
-* sk 02/16/16 Corrected the Tuning logic.
-* sk 03/01/16 Removed Bus Width check for eMMC. CR# 938311.
-* </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 *****************************/
-#define XSDPS_CMD8_VOL_PATTERN 0x1AAU
-#define XSDPS_RESPOCR_READY 0x80000000U
-#define XSDPS_ACMD41_HCS 0x40000000U
-#define XSDPS_ACMD41_3V3 0x00300000U
-#define XSDPS_CMD1_HIGH_VOL 0x00FF8000U
-#define XSDPS_CMD1_DUAL_VOL 0x00FF8010U
-#define HIGH_SPEED_SUPPORT 0x2U
-#define WIDTH_4_BIT_SUPPORT 0x4U
-#define SD_CLK_25_MHZ 25000000U
-#define SD_CLK_26_MHZ 26000000U
-#define EXT_CSD_DEVICE_TYPE_BYTE 196U
-#define EXT_CSD_DEVICE_TYPE_HIGH_SPEED 0x2U
-#define EXT_CSD_DEVICE_TYPE_DDR_1V8_HIGH_SPEED 0x4U
-#define EXT_CSD_DEVICE_TYPE_DDR_1V2_HIGH_SPEED 0x8U
-#define EXT_CSD_DEVICE_TYPE_SDR_1V8_HS200 0x10U
-#define EXT_CSD_DEVICE_TYPE_SDR_1V2_HS200 0x20U
-#define CSD_SPEC_VER_3 0x3U
-
-/* Note: Remove this once fixed */
-#define UHS_BROKEN
-
-/**************************** Type Definitions *******************************/
-
-/***************** Macros (Inline Functions) Definitions *********************/
-
-/************************** Function Prototypes ******************************/
-u32 XSdPs_FrameCmd(XSdPs *InstancePtr, u32 Cmd);
-s32 XSdPs_CmdTransfer(XSdPs *InstancePtr, u32 Cmd, u32 Arg, u32 BlkCnt);
-void XSdPs_SetupADMA2DescTbl(XSdPs *InstancePtr, u32 BlkCnt, const u8 *Buff);
-extern s32 XSdPs_Uhs_ModeInit(XSdPs *InstancePtr, u8 Mode);
-static s32 XSdPs_IdentifyCard(XSdPs *InstancePtr);
-static s32 XSdPs_Switch_Voltage(XSdPs *InstancePtr);
-
-/*****************************************************************************/
-/**
-*
-* Initializes a specific XSdPs instance such that the driver is ready to use.
-*
-*
-* @param InstancePtr is a pointer to the XSdPs instance.
-* @param ConfigPtr is a reference to a structure containing information
-* about a specific SD device. This function initializes an
-* InstancePtr object for a specific device specified by the
-* contents of Config.
-* @param EffectiveAddr is the device base address in the virtual memory
-* address space. The caller is responsible for keeping the address
-* mapping from EffectiveAddr to the device physical base address
-* unchanged once this function is invoked. Unexpected errors may
-* occur if the address mapping changes after this function is
-* called. If address translation is not used, use
-* ConfigPtr->Config.BaseAddress for this device.
-*
-* @return
-* - XST_SUCCESS if successful.
-* - XST_DEVICE_IS_STARTED if the device is already started.
-* It must be stopped to re-initialize.
-*
-* @note This function initializes the host controller.
-* Initial clock of 400KHz is set.
-* Voltage of 3.3V is selected as that is supported by host.
-* Interrupts status is enabled and signal disabled by default.
-* Default data direction is card to host and
-* 32 bit ADMA2 is selected. Defualt Block size is 512 bytes.
-*
-******************************************************************************/
-s32 XSdPs_CfgInitialize(XSdPs *InstancePtr, XSdPs_Config *ConfigPtr,
- u32 EffectiveAddr)
-{
- s32 Status;
- u8 PowerLevel;
- u8 ReadReg;
-
- Xil_AssertNonvoid(InstancePtr != NULL);
- Xil_AssertNonvoid(ConfigPtr != NULL);
-
- /* Set some default values. */
- InstancePtr->Config.BaseAddress = EffectiveAddr;
- InstancePtr->Config.InputClockHz = ConfigPtr->InputClockHz;
- InstancePtr->IsReady = XIL_COMPONENT_IS_READY;
- InstancePtr->Config.CardDetect = ConfigPtr->CardDetect;
- InstancePtr->Config.WriteProtect = ConfigPtr->WriteProtect;
-
- /* Disable bus power */
- XSdPs_WriteReg8(InstancePtr->Config.BaseAddress,
- XSDPS_POWER_CTRL_OFFSET, 0U);
-
- /* Delay to poweroff card */
-#if defined (__arm__) || defined (__aarch64__)
-
- (void)sleep(1U);
-
-#endif
-
-#ifdef __MICROBLAZE__
-
- MB_Sleep(1000U);
-
-#endif
-
- /* "Software reset for all" is initiated */
- XSdPs_WriteReg8(InstancePtr->Config.BaseAddress, XSDPS_SW_RST_OFFSET,
- XSDPS_SWRST_ALL_MASK);
-
- /* Proceed with initialization only after reset is complete */
- ReadReg = XSdPs_ReadReg8(InstancePtr->Config.BaseAddress,
- XSDPS_SW_RST_OFFSET);
- while ((ReadReg & XSDPS_SWRST_ALL_MASK) != 0U) {
- ReadReg = XSdPs_ReadReg8(InstancePtr->Config.BaseAddress,
- XSDPS_SW_RST_OFFSET);
- }
- /* Host Controller version is read. */
- InstancePtr->HC_Version =
- (u8)(XSdPs_ReadReg16(InstancePtr->Config.BaseAddress,
- XSDPS_HOST_CTRL_VER_OFFSET) & XSDPS_HC_SPEC_VER_MASK);
-
- /*
- * Read capabilities register and update it in Instance pointer.
- * It is sufficient to read this once on power on.
- */
- InstancePtr->Host_Caps = XSdPs_ReadReg(InstancePtr->Config.BaseAddress,
- XSDPS_CAPS_OFFSET);
-
- /* Select voltage and enable bus power. */
- XSdPs_WriteReg8(InstancePtr->Config.BaseAddress,
- XSDPS_POWER_CTRL_OFFSET,
- XSDPS_PC_BUS_VSEL_3V3_MASK | XSDPS_PC_BUS_PWR_MASK);
-
- /* Change the clock frequency to 400 KHz */
- Status = XSdPs_Change_ClkFreq(InstancePtr, XSDPS_CLK_400_KHZ);
- if (Status != XST_SUCCESS) {
- Status = XST_FAILURE;
- goto RETURN_PATH ;
- }
-
- if ((InstancePtr->Host_Caps & XSDPS_CAP_VOLT_3V3_MASK) != 0U) {
- PowerLevel = XSDPS_PC_BUS_VSEL_3V3_MASK;
- } else if ((InstancePtr->Host_Caps & XSDPS_CAP_VOLT_3V0_MASK) != 0U) {
- PowerLevel = XSDPS_PC_BUS_VSEL_3V0_MASK;
- } else if ((InstancePtr->Host_Caps & XSDPS_CAP_VOLT_1V8_MASK) != 0U) {
- PowerLevel = XSDPS_PC_BUS_VSEL_1V8_MASK;
- } else {
- PowerLevel = 0U;
- }
-
- /* Select voltage based on capability and enable bus power. */
- XSdPs_WriteReg8(InstancePtr->Config.BaseAddress,
- XSDPS_POWER_CTRL_OFFSET,
- PowerLevel | XSDPS_PC_BUS_PWR_MASK);
- /* Enable ADMA2 in 64bit mode. */
- XSdPs_WriteReg8(InstancePtr->Config.BaseAddress,
- XSDPS_HOST_CTRL1_OFFSET,
- XSDPS_HC_DMA_ADMA2_32_MASK);
-
- /* Enable all interrupt status except card interrupt initially */
- XSdPs_WriteReg16(InstancePtr->Config.BaseAddress,
- XSDPS_NORM_INTR_STS_EN_OFFSET,
- XSDPS_NORM_INTR_ALL_MASK & (~XSDPS_INTR_CARD_MASK));
-
- XSdPs_WriteReg16(InstancePtr->Config.BaseAddress,
- XSDPS_ERR_INTR_STS_EN_OFFSET,
- XSDPS_ERROR_INTR_ALL_MASK);
-
- /* Disable all interrupt signals by default. */
- XSdPs_WriteReg16(InstancePtr->Config.BaseAddress,
- XSDPS_NORM_INTR_SIG_EN_OFFSET, 0x0U);
- XSdPs_WriteReg16(InstancePtr->Config.BaseAddress,
- XSDPS_ERR_INTR_SIG_EN_OFFSET, 0x0U);
-
- /*
- * Transfer mode register - default value
- * DMA enabled, block count enabled, data direction card to host(read)
- */
- XSdPs_WriteReg16(InstancePtr->Config.BaseAddress,
- XSDPS_XFER_MODE_OFFSET,
- XSDPS_TM_DMA_EN_MASK | XSDPS_TM_BLK_CNT_EN_MASK |
- XSDPS_TM_DAT_DIR_SEL_MASK);
-
- /* Set block size to 512 by default */
- XSdPs_WriteReg16(InstancePtr->Config.BaseAddress,
- XSDPS_BLK_SIZE_OFFSET, XSDPS_BLK_SIZE_512_MASK);
-
- Status = XST_SUCCESS;
-
-RETURN_PATH:
- return Status;
-
-}
-
-/*****************************************************************************/
-/**
-* SD initialization is done in this function
-*
-*
-* @param InstancePtr is a pointer to the instance to be worked on.
-*
-* @return
-* - XST_SUCCESS if initialization was successful
-* - XST_FAILURE if failure - could be because
-* a) SD is already initialized
-* b) There is no card inserted
-* c) One of the steps (commands) in the
- initialization cycle failed
-*
-* @note This function initializes the SD card by following its
-* initialization and identification state diagram.
-* CMD0 is sent to reset card.
-* CMD8 and ACDM41 are sent to identify voltage and
-* high capacity support
-* CMD2 and CMD3 are sent to obtain Card ID and
-* Relative card address respectively.
-* CMD9 is sent to read the card specific data.
-*
-******************************************************************************/
-s32 XSdPs_SdCardInitialize(XSdPs *InstancePtr)
-{
- u32 PresentStateReg;
- s32 Status;
- u32 RespOCR;
- u32 CSD[4];
- u32 Arg;
- u8 ReadReg;
-
- Xil_AssertNonvoid(InstancePtr != NULL);
- Xil_AssertNonvoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY);
-
- if ((InstancePtr->HC_Version != XSDPS_HC_SPEC_V3) ||
- ((InstancePtr->Host_Caps & XSDPS_CAPS_SLOT_TYPE_MASK)
- != XSDPS_CAPS_EMB_SLOT)) {
- if(InstancePtr->Config.CardDetect != 0U) {
- /*
- * Check the present state register to make sure
- * card is inserted and detected by host controller
- */
- PresentStateReg = XSdPs_ReadReg(InstancePtr->Config.BaseAddress,
- XSDPS_PRES_STATE_OFFSET);
- if ((PresentStateReg & XSDPS_PSR_CARD_INSRT_MASK) == 0U) {
- Status = XST_FAILURE;
- goto RETURN_PATH;
- }
- }
- }
-
- /* CMD0 no response expected */
- Status = XSdPs_CmdTransfer(InstancePtr, (u32)CMD0, 0U, 0U);
- if (Status != XST_SUCCESS) {
- Status = XST_FAILURE;
- goto RETURN_PATH;
- }
-
- /*
- * CMD8; response expected
- * 0x1AA - Supply Voltage 2.7 - 3.6V and AA is pattern
- */
- Status = XSdPs_CmdTransfer(InstancePtr, CMD8,
- XSDPS_CMD8_VOL_PATTERN, 0U);
- if ((Status != XST_SUCCESS) && (Status != XSDPS_CT_ERROR)) {
- Status = XST_FAILURE;
- goto RETURN_PATH;
- }
-
- if (Status == XSDPS_CT_ERROR) {
- /* "Software reset for all" is initiated */
- XSdPs_WriteReg8(InstancePtr->Config.BaseAddress, XSDPS_SW_RST_OFFSET,
- XSDPS_SWRST_CMD_LINE_MASK);
-
- /* Proceed with initialization only after reset is complete */
- ReadReg = XSdPs_ReadReg8(InstancePtr->Config.BaseAddress,
- XSDPS_SW_RST_OFFSET);
- while ((ReadReg & XSDPS_SWRST_CMD_LINE_MASK) != 0U) {
- ReadReg = XSdPs_ReadReg8(InstancePtr->Config.BaseAddress,
- XSDPS_SW_RST_OFFSET);
- }
- }
-
- RespOCR = XSdPs_ReadReg(InstancePtr->Config.BaseAddress,
- XSDPS_RESP0_OFFSET);
- if (RespOCR != XSDPS_CMD8_VOL_PATTERN) {
- InstancePtr->Card_Version = XSDPS_SD_VER_1_0;
- }
- else {
- InstancePtr->Card_Version = XSDPS_SD_VER_2_0;
- }
-
- RespOCR = 0U;
- /* Send ACMD41 while card is still busy with power up */
- while ((RespOCR & XSDPS_RESPOCR_READY) == 0U) {
- Status = XSdPs_CmdTransfer(InstancePtr, CMD55, 0U, 0U);
- if (Status != XST_SUCCESS) {
- Status = XST_FAILURE;
- goto RETURN_PATH;
- }
-
- Arg = XSDPS_ACMD41_HCS | XSDPS_ACMD41_3V3 | (0x1FFU << 15U);
- if (InstancePtr->HC_Version == XSDPS_HC_SPEC_V3) {
- Arg |= XSDPS_OCR_S18;
- }
-
- /* 0x40300000 - Host High Capacity support & 3.3V window */
- Status = XSdPs_CmdTransfer(InstancePtr, ACMD41,
- Arg, 0U);
- if (Status != XST_SUCCESS) {
- Status = XST_FAILURE;
- goto RETURN_PATH;
- }
-
- /* Response with card capacity */
- RespOCR = XSdPs_ReadReg(InstancePtr->Config.BaseAddress,
- XSDPS_RESP0_OFFSET);
-
- }
-
- /* Update HCS support flag based on card capacity response */
- if ((RespOCR & XSDPS_ACMD41_HCS) != 0U) {
- InstancePtr->HCS = 1U;
- }
-
- /* There is no support to switch to 1.8V and use UHS mode on 1.0 silicon */
-#ifndef UHS_BROKEN
- if ((RespOCR & XSDPS_OCR_S18) != 0U) {
- InstancePtr->Switch1v8 = 1U;
- Status = XSdPs_Switch_Voltage(InstancePtr);
- if (Status != XST_SUCCESS) {
- Status = XST_FAILURE;
- goto RETURN_PATH;
- }
-
- }
-#endif
-
- /* CMD2 for Card ID */
- Status = XSdPs_CmdTransfer(InstancePtr, CMD2, 0U, 0U);
- if (Status != XST_SUCCESS) {
- Status = XST_FAILURE;
- goto RETURN_PATH;
- }
-
- InstancePtr->CardID[0] =
- XSdPs_ReadReg16(InstancePtr->Config.BaseAddress,
- XSDPS_RESP0_OFFSET);
- InstancePtr->CardID[1] =
- XSdPs_ReadReg16(InstancePtr->Config.BaseAddress,
- XSDPS_RESP1_OFFSET);
- InstancePtr->CardID[2] =
- XSdPs_ReadReg16(InstancePtr->Config.BaseAddress,
- XSDPS_RESP2_OFFSET);
- InstancePtr->CardID[3] =
- XSdPs_ReadReg16(InstancePtr->Config.BaseAddress,
- XSDPS_RESP3_OFFSET);
- do {
- Status = XSdPs_CmdTransfer(InstancePtr, CMD3, 0U, 0U);
- if (Status != XST_SUCCESS) {
- Status = XST_FAILURE;
- goto RETURN_PATH;
- }
-
- /*
- * Relative card address is stored as the upper 16 bits
- * This is to avoid shifting when sending commands
- */
- InstancePtr->RelCardAddr =
- XSdPs_ReadReg(InstancePtr->Config.BaseAddress,
- XSDPS_RESP0_OFFSET) & 0xFFFF0000U;
- } while (InstancePtr->RelCardAddr == 0U);
-
- Status = XSdPs_CmdTransfer(InstancePtr, CMD9, (InstancePtr->RelCardAddr), 0U);
- if (Status != XST_SUCCESS) {
- Status = XST_FAILURE;
- goto RETURN_PATH;
- }
-
- /*
- * Card specific data is read.
- * Currently not used for any operation.
- */
- CSD[0] = XSdPs_ReadReg(InstancePtr->Config.BaseAddress,
- XSDPS_RESP0_OFFSET);
- CSD[1] = XSdPs_ReadReg(InstancePtr->Config.BaseAddress,
- XSDPS_RESP1_OFFSET);
- CSD[2] = XSdPs_ReadReg(InstancePtr->Config.BaseAddress,
- XSDPS_RESP2_OFFSET);
- CSD[3] = XSdPs_ReadReg(InstancePtr->Config.BaseAddress,
- XSDPS_RESP3_OFFSET);
-
- Status = XST_SUCCESS;
-
-RETURN_PATH:
- return Status;
-
-}
-
-/*****************************************************************************/
-/**
-*
-* Initialize Card with Identification mode sequence
-*
-*
-* @param InstancePtr is a pointer to the instance to be worked on.
-*
-* @return
-* - XST_SUCCESS if initialization was successful
-* - XST_FAILURE if failure - could be because
-* a) SD is already initialized
-* b) There is no card inserted
-* c) One of the steps (commands) in the
-* initialization cycle failed
-*
-*
-******************************************************************************/
-s32 XSdPs_CardInitialize(XSdPs *InstancePtr) {
- u8 Tmp;
- u32 Cnt;
- u32 PresentStateReg;
- u32 CtrlReg;
- u32 CSD[4];
-#ifdef __ICCARM__
-#pragma data_alignment = 32
-static u8 ExtCsd[512];
-#pragma data_alignment = 4
-#else
-static u8 ExtCsd[512] __attribute__ ((aligned(32)));
-#endif
- u8 SCR[8] = { 0U };
- u8 ReadBuff[64] = { 0U };
- s32 Status;
-
- Xil_AssertNonvoid(InstancePtr != NULL);
- Xil_AssertNonvoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY);
-
- /* Default settings */
- InstancePtr->BusWidth = XSDPS_1_BIT_WIDTH;
- InstancePtr->CardType = XSDPS_CARD_SD;
- InstancePtr->Switch1v8 = 0U;
- InstancePtr->BusSpeed = XSDPS_CLK_400_KHZ;
-
- if ((InstancePtr->HC_Version == XSDPS_HC_SPEC_V3) &&
- ((InstancePtr->Host_Caps & XSDPS_CAPS_SLOT_TYPE_MASK)
- == XSDPS_CAPS_EMB_SLOT)) {
- InstancePtr->CardType = XSDPS_CHIP_EMMC;
- } else {
- Status = XSdPs_IdentifyCard(InstancePtr);
- if (Status == XST_FAILURE) {
- goto RETURN_PATH;
- }
- }
-
- if ((InstancePtr->CardType != XSDPS_CARD_SD) &&
- (InstancePtr->CardType != XSDPS_CARD_MMC) &&
- (InstancePtr->CardType != XSDPS_CHIP_EMMC)) {
- Status = XST_FAILURE;
- goto RETURN_PATH;
- }
-
- if (InstancePtr->CardType == XSDPS_CARD_SD) {
- Status = XSdPs_SdCardInitialize(InstancePtr);
- if (Status != XST_SUCCESS) {
- Status = XST_FAILURE;
- goto RETURN_PATH;
- }
-
- /* Change clock to default clock 25MHz */
- InstancePtr->BusSpeed = SD_CLK_25_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)
- || (InstancePtr->CardType == XSDPS_CHIP_EMMC)) {
- Status = XSdPs_MmcCardInitialize(InstancePtr);
- if (Status != XST_SUCCESS) {
- Status = XST_FAILURE;
- goto RETURN_PATH;
- }
- /* Change clock to default clock 26MHz */
- InstancePtr->BusSpeed = SD_CLK_26_MHZ;
- Status = XSdPs_Change_ClkFreq(InstancePtr, InstancePtr->BusSpeed);
- if (Status != XST_SUCCESS) {
- Status = XST_FAILURE;
- goto RETURN_PATH;
- }
- } else {
- Status = XST_FAILURE;
- goto RETURN_PATH;
- }
-
- Status = XSdPs_Select_Card(InstancePtr);
- if (Status != XST_SUCCESS) {
- Status = XST_FAILURE;
- goto RETURN_PATH;
- }
-
- if (InstancePtr->CardType == XSDPS_CARD_SD) {
- /* Pull-up disconnected during data transfer */
- Status = XSdPs_Pullup(InstancePtr);
- if (Status != XST_SUCCESS) {
- Status = XST_FAILURE;
- goto RETURN_PATH;
- }
-
- Status = XSdPs_Get_BusWidth(InstancePtr, SCR);
- if (Status != XST_SUCCESS) {
- Status = XST_FAILURE;
- goto RETURN_PATH;
- }
-
- if ((SCR[1] & WIDTH_4_BIT_SUPPORT) != 0U) {
- Status = XSdPs_Change_BusWidth(InstancePtr);
- if (Status != XST_SUCCESS) {
- Status = XST_FAILURE;
- goto RETURN_PATH;
- }
- }
-
- if ((InstancePtr->Switch1v8 != 0U) &&
- (InstancePtr->BusWidth == XSDPS_4_BIT_WIDTH)) {
- /* Set UHS-I SDR104 mode */
- Status = XSdPs_Uhs_ModeInit(InstancePtr,
- XSDPS_UHS_SPEED_MODE_SDR104);
- if (Status != XST_SUCCESS) {
- Status = XST_FAILURE;
- goto RETURN_PATH;
- }
-
- } else {
-
- /*
- * card supports CMD6 when SD_SPEC field in SCR register
- * indicates that the Physical Layer Specification Version
- * is 1.10 or later. So for SD v1.0 cmd6 is not supported.
- */
- if (SCR[0] != 0U) {
- /* Get speed supported by device */
- Status = XSdPs_Get_BusSpeed(InstancePtr, ReadBuff);
- if (Status != XST_SUCCESS) {
- Status = XST_FAILURE;
- goto RETURN_PATH;
- }
-
- /* Check for high speed support */
- if ((ReadBuff[13] & HIGH_SPEED_SUPPORT) != 0U) {
- Status = XSdPs_Change_BusSpeed(InstancePtr);
- if (Status != XST_SUCCESS) {
- Status = XST_FAILURE;
- goto RETURN_PATH;
- }
- }
- }
- }
-
- } else if (((InstancePtr->CardType == XSDPS_CARD_MMC) &&
- (InstancePtr->Card_Version > CSD_SPEC_VER_3)) &&
- (InstancePtr->HC_Version == XSDPS_HC_SPEC_V2)) {
-
- Status = XSdPs_Change_BusWidth(InstancePtr);
- if (Status != XST_SUCCESS) {
- Status = XST_FAILURE;
- goto RETURN_PATH;
- }
-
- Status = XSdPs_Get_Mmc_ExtCsd(InstancePtr, ExtCsd);
- if (Status != XST_SUCCESS) {
- Status = XST_FAILURE;
- goto RETURN_PATH;
- }
-
- if ((ExtCsd[EXT_CSD_DEVICE_TYPE_BYTE] &
- EXT_CSD_DEVICE_TYPE_HIGH_SPEED) != 0U) {
- Status = XSdPs_Change_BusSpeed(InstancePtr);
- if (Status != XST_SUCCESS) {
- Status = XST_FAILURE;
- goto RETURN_PATH;
- }
-
- Status = XSdPs_Get_Mmc_ExtCsd(InstancePtr, ExtCsd);
- if (Status != XST_SUCCESS) {
- Status = XST_FAILURE;
- goto RETURN_PATH;
- }
-
- if (ExtCsd[EXT_CSD_HS_TIMING_BYTE] != EXT_CSD_HS_TIMING_HIGH) {
- Status = XST_FAILURE;
- goto RETURN_PATH;
- }
- }
- } else if (InstancePtr->CardType == XSDPS_CHIP_EMMC){
- /* Change bus width to 8-bit */
- Status = XSdPs_Change_BusWidth(InstancePtr);
- if (Status != XST_SUCCESS) {
- Status = XST_FAILURE;
- goto RETURN_PATH;
- }
-
- /* Get Extended CSD */
- Status = XSdPs_Get_Mmc_ExtCsd(InstancePtr, ExtCsd);
- if (Status != XST_SUCCESS) {
- Status = XST_FAILURE;
- goto RETURN_PATH;
- }
-
- if ((ExtCsd[EXT_CSD_DEVICE_TYPE_BYTE] &
- (EXT_CSD_DEVICE_TYPE_SDR_1V8_HS200 |
- EXT_CSD_DEVICE_TYPE_SDR_1V2_HS200)) != 0U) {
- Status = XSdPs_Change_BusSpeed(InstancePtr);
- if (Status != XST_SUCCESS) {
- Status = XST_FAILURE;
- goto RETURN_PATH;
- }
-
- Status = XSdPs_Get_Mmc_ExtCsd(InstancePtr, ExtCsd);
- if (Status != XST_SUCCESS) {
- Status = XST_FAILURE;
- goto RETURN_PATH;
- }
-
- if (ExtCsd[EXT_CSD_HS_TIMING_BYTE] != EXT_CSD_HS_TIMING_HS200) {
- Status = XST_FAILURE;
- goto RETURN_PATH;
- }
- }
- }
-
- Status = XSdPs_SetBlkSize(InstancePtr, XSDPS_BLK_SIZE_512_MASK);
- if (Status != XST_SUCCESS) {
- Status = XST_FAILURE;
- goto RETURN_PATH;
- }
-
-RETURN_PATH:
- return Status;
-}
-
-/*****************************************************************************/
-/**
-*
-* Identify type of card using CMD0 + CMD1 sequence
-*
-*
-* @param InstancePtr is a pointer to the XSdPs instance.
-*
-******************************************************************************/
-static s32 XSdPs_IdentifyCard(XSdPs *InstancePtr)
-{
- s32 Status;
- u32 OperCondReg;
- u8 ReadReg;
-
- Xil_AssertNonvoid(InstancePtr != NULL);
- Xil_AssertNonvoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY);
-
- /* 74 CLK delay after card is powered up, before the first command. */
-#if defined (__arm__) || defined (__aarch64__)
-
- usleep(XSDPS_INIT_DELAY);
-
-#endif
-
-#ifdef __MICROBLAZE__
-
- /* 2 msec delay */
- MB_Sleep(2);
-
-#endif
-
- /* CMD0 no response expected */
- Status = XSdPs_CmdTransfer(InstancePtr, CMD0, 0U, 0U);
- if (Status != XST_SUCCESS) {
- Status = XST_FAILURE;
- goto RETURN_PATH;
- }
-
- /* Host High Capacity support & High voltage window */
- Status = XSdPs_CmdTransfer(InstancePtr, CMD1,
- XSDPS_ACMD41_HCS | XSDPS_CMD1_HIGH_VOL, 0U);
- if (Status != XST_SUCCESS) {
- InstancePtr->CardType = XSDPS_CARD_SD;
- } else {
- InstancePtr->CardType = XSDPS_CARD_MMC;
- }
-
- XSdPs_WriteReg16(InstancePtr->Config.BaseAddress,
- XSDPS_NORM_INTR_STS_OFFSET, XSDPS_NORM_INTR_ALL_MASK);
- XSdPs_WriteReg16(InstancePtr->Config.BaseAddress,
- XSDPS_ERR_INTR_STS_OFFSET, XSDPS_ERROR_INTR_ALL_MASK);
-
- /* "Software reset for all" is initiated */
- XSdPs_WriteReg8(InstancePtr->Config.BaseAddress, XSDPS_SW_RST_OFFSET,
- XSDPS_SWRST_CMD_LINE_MASK);
-
- /* Proceed with initialization only after reset is complete */
- ReadReg = XSdPs_ReadReg8(InstancePtr->Config.BaseAddress,
- XSDPS_SW_RST_OFFSET);
- while ((ReadReg & XSDPS_SWRST_CMD_LINE_MASK) != 0U) {
- ReadReg = XSdPs_ReadReg8(InstancePtr->Config.BaseAddress,
- XSDPS_SW_RST_OFFSET);
- }
-
- Status = XST_SUCCESS;
-
-RETURN_PATH:
- return Status;
-}
-
-/*****************************************************************************/
-/**
-*
-* Switches the SD card voltage from 3v3 to 1v8
-*
-*
-* @param InstancePtr is a pointer to the XSdPs instance.
-*
-******************************************************************************/
-static s32 XSdPs_Switch_Voltage(XSdPs *InstancePtr)
-{
- s32 Status;
- u16 CtrlReg;
- u32 ReadReg;
-
- /* Send switch voltage command */
- Status = XSdPs_CmdTransfer(InstancePtr, CMD11, 0U, 0U);
- if (Status != XST_SUCCESS) {
- Status = XST_FAILURE;
- }
-
- /* Wait for CMD and DATA line to go low */
- ReadReg = XSdPs_ReadReg(InstancePtr->Config.BaseAddress,
- XSDPS_PRES_STATE_OFFSET);
- while ((ReadReg & (XSDPS_PSR_CMD_SG_LVL_MASK |
- XSDPS_PSR_DAT30_SG_LVL_MASK)) != 0U) {
- ReadReg = XSdPs_ReadReg(InstancePtr->Config.BaseAddress,
- XSDPS_PRES_STATE_OFFSET);
- }
-
- /* Stop the clock */
- CtrlReg = XSdPs_ReadReg16(InstancePtr->Config.BaseAddress,
- XSDPS_CLK_CTRL_OFFSET);
- CtrlReg &= ~(XSDPS_CC_SD_CLK_EN_MASK | XSDPS_CC_INT_CLK_EN_MASK);
- XSdPs_WriteReg16(InstancePtr->Config.BaseAddress, XSDPS_CLK_CTRL_OFFSET,
- CtrlReg);
-
- /* Wait minimum 5mSec */
-#if defined (__arm__) || defined (__aarch64__)
-
- (void)usleep(5000U);
-
-#endif
-
-#ifdef __MICROBLAZE__
-
- MB_Sleep(5U);
-
-#endif
-
- /* Enabling 1.8V in controller */
- CtrlReg = XSdPs_ReadReg16(InstancePtr->Config.BaseAddress,
- XSDPS_HOST_CTRL2_OFFSET);
- CtrlReg |= XSDPS_HC2_1V8_EN_MASK;
- XSdPs_WriteReg16(InstancePtr->Config.BaseAddress, XSDPS_HOST_CTRL2_OFFSET,
- CtrlReg);
-
- /* Start clock */
- Status = XSdPs_Change_ClkFreq(InstancePtr, XSDPS_CLK_400_KHZ);
- if (Status != XST_SUCCESS) {
- Status = XST_FAILURE;
- goto RETURN_PATH;
- }
-
- /* Wait for CMD and DATA line to go high */
- ReadReg = XSdPs_ReadReg(InstancePtr->Config.BaseAddress,
- XSDPS_PRES_STATE_OFFSET);
- while ((ReadReg & (XSDPS_PSR_CMD_SG_LVL_MASK | XSDPS_PSR_DAT30_SG_LVL_MASK))
- != (XSDPS_PSR_CMD_SG_LVL_MASK | XSDPS_PSR_DAT30_SG_LVL_MASK)) {
- ReadReg = XSdPs_ReadReg(InstancePtr->Config.BaseAddress,
- XSDPS_PRES_STATE_OFFSET);
- }
-
-RETURN_PATH:
- return Status;
-}
-
-/*****************************************************************************/
-/**
-
-* This function does SD command generation.
-*
-* @param InstancePtr is a pointer to the instance to be worked on.
-* @param Cmd is the command to be sent.
-* @param Arg is the argument to be sent along with the command.
-* This could be address or any other information
-* @param BlkCnt - Block count passed by the user.
-*
-* @return
-* - XST_SUCCESS if initialization was successful
-* - XST_FAILURE if failure - could be because another transfer
-* is in progress or command or data inhibit is set
-*
-******************************************************************************/
-s32 XSdPs_CmdTransfer(XSdPs *InstancePtr, u32 Cmd, u32 Arg, u32 BlkCnt)
-{
- u32 PresentStateReg;
- u32 CommandReg;
- u32 StatusReg;
- s32 Status;
-
- Xil_AssertNonvoid(InstancePtr != NULL);
- Xil_AssertNonvoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY);
-
- /*
- * Check the command inhibit to make sure no other
- * command transfer is in progress
- */
- PresentStateReg = XSdPs_ReadReg(InstancePtr->Config.BaseAddress,
- XSDPS_PRES_STATE_OFFSET);
- if ((PresentStateReg & XSDPS_PSR_INHIBIT_CMD_MASK) != 0U) {
- Status = XST_FAILURE;
- goto RETURN_PATH;
- }
-
- /* Write block count register */
- XSdPs_WriteReg16(InstancePtr->Config.BaseAddress,
- XSDPS_BLK_CNT_OFFSET, (u16)BlkCnt);
-
- XSdPs_WriteReg8(InstancePtr->Config.BaseAddress,
- XSDPS_TIMEOUT_CTRL_OFFSET, 0xEU);
-
- /* Write argument register */
- XSdPs_WriteReg(InstancePtr->Config.BaseAddress,
- XSDPS_ARGMT_OFFSET, Arg);
-
- XSdPs_WriteReg16(InstancePtr->Config.BaseAddress,
- XSDPS_NORM_INTR_STS_OFFSET, XSDPS_NORM_INTR_ALL_MASK);
- XSdPs_WriteReg16(InstancePtr->Config.BaseAddress,
- XSDPS_ERR_INTR_STS_OFFSET, XSDPS_ERROR_INTR_ALL_MASK);
- /* Command register is set to trigger transfer of command */
- CommandReg = XSdPs_FrameCmd(InstancePtr, Cmd);
-
- /*
- * Mask to avoid writing to reserved bits 31-30
- * This is necessary because 0x80000000 is used by this software to
- * distinguish between ACMD and CMD of same number
- */
- CommandReg = CommandReg & 0x3FFFU;
-
- /*
- * Check for data inhibit in case of command using DAT lines.
- * For Tuning Commands DAT lines check can be ignored.
- */
- if ((Cmd != CMD21) && (Cmd != CMD19)) {
- PresentStateReg = XSdPs_ReadReg(InstancePtr->Config.BaseAddress,
- XSDPS_PRES_STATE_OFFSET);
- if (((PresentStateReg & (XSDPS_PSR_INHIBIT_DAT_MASK |
- XSDPS_PSR_INHIBIT_DAT_MASK)) != 0U) &&
- ((CommandReg & XSDPS_DAT_PRESENT_SEL_MASK) != 0U)) {
- Status = XST_FAILURE;
- goto RETURN_PATH;
- }
- }
-
- XSdPs_WriteReg16(InstancePtr->Config.BaseAddress, XSDPS_CMD_OFFSET,
- (u16)CommandReg);
-
- /* Polling for response for now */
- do {
- StatusReg = XSdPs_ReadReg16(InstancePtr->Config.BaseAddress,
- XSDPS_NORM_INTR_STS_OFFSET);
- if ((Cmd == CMD21) || (Cmd == CMD19)) {
- if ((XSdPs_ReadReg16(InstancePtr->Config.BaseAddress,
- XSDPS_NORM_INTR_STS_OFFSET) & XSDPS_INTR_BRR_MASK) != 0U){
- XSdPs_WriteReg16(InstancePtr->Config.BaseAddress,
- XSDPS_NORM_INTR_STS_OFFSET, XSDPS_INTR_BRR_MASK);
- break;
- }
- }
-
- if ((StatusReg & XSDPS_INTR_ERR_MASK) != 0U) {
- Status = XSdPs_ReadReg16(InstancePtr->Config.BaseAddress,
- XSDPS_ERR_INTR_STS_OFFSET);
- if ((Status & ~XSDPS_INTR_ERR_CT_MASK) == 0) {
- Status = XSDPS_CT_ERROR;
- }
- /* Write to clear error bits */
- XSdPs_WriteReg16(InstancePtr->Config.BaseAddress,
- XSDPS_ERR_INTR_STS_OFFSET,
- XSDPS_ERROR_INTR_ALL_MASK);
- goto RETURN_PATH;
- }
- } while((StatusReg & XSDPS_INTR_CC_MASK) == 0U);
- /* Write to clear bit */
- XSdPs_WriteReg16(InstancePtr->Config.BaseAddress,
- XSDPS_NORM_INTR_STS_OFFSET,
- XSDPS_INTR_CC_MASK);
-
- Status = XST_SUCCESS;
-
-RETURN_PATH:
- return Status;
-
-}
-
-/*****************************************************************************/
-/**
-* This function frames the Command register for a particular command.
-* Note that this generates only the command register value i.e.
-* the upper 16 bits of the transfer mode and command register.
-* This value is already shifted to be upper 16 bits and can be directly
-* OR'ed with transfer mode register value.
-*
-* @param Command to be sent.
-*
-* @return Command register value complete with response type and
-* data, CRC and index related flags.
-*
-******************************************************************************/
-u32 XSdPs_FrameCmd(XSdPs *InstancePtr, u32 Cmd)
-{
- u32 RetVal;
-
- RetVal = Cmd;
-
- switch(Cmd) {
- case CMD0:
- RetVal |= RESP_NONE;
- break;
- case CMD1:
- RetVal |= RESP_R3;
- break;
- case CMD2:
- RetVal |= RESP_R2;
- break;
- case CMD3:
- RetVal |= RESP_R6;
- break;
- case CMD4:
- RetVal |= RESP_NONE;
- break;
- case CMD5:
- RetVal |= RESP_R1B;
- break;
- case CMD6:
- if (InstancePtr->CardType == XSDPS_CARD_SD) {
- RetVal |= RESP_R1 | (u32)XSDPS_DAT_PRESENT_SEL_MASK;
- } else {
- RetVal |= RESP_R1B;
- }
- break;
- case ACMD6:
- RetVal |= RESP_R1;
- break;
- case CMD7:
- RetVal |= RESP_R1;
- break;
- case CMD8:
- if (InstancePtr->CardType == XSDPS_CARD_SD) {
- RetVal |= RESP_R1;
- } else {
- RetVal |= RESP_R1 | (u32)XSDPS_DAT_PRESENT_SEL_MASK;
- }
- break;
- case CMD9:
- RetVal |= RESP_R2;
- break;
- case CMD11:
- case CMD10:
- case CMD12:
- case ACMD13:
- case CMD16:
- RetVal |= RESP_R1;
- break;
- case CMD17:
- case CMD18:
- case CMD19:
- case CMD21:
- RetVal |= RESP_R1 | (u32)XSDPS_DAT_PRESENT_SEL_MASK;
- break;
- case CMD23:
- case ACMD23:
- case CMD24:
- case CMD25:
- RetVal |= RESP_R1 | (u32)XSDPS_DAT_PRESENT_SEL_MASK;
- case ACMD41:
- RetVal |= RESP_R3;
- break;
- case ACMD42:
- RetVal |= RESP_R1;
- break;
- case ACMD51:
- RetVal |= RESP_R1 | (u32)XSDPS_DAT_PRESENT_SEL_MASK;
- break;
- case CMD52:
- case CMD55:
- RetVal |= RESP_R1;
- break;
- case CMD58:
- break;
- default :
- RetVal |= Cmd;
- break;
- }
-
- return RetVal;
-}
-
-/*****************************************************************************/
-/**
-* This function performs SD read in polled mode.
-*
-* @param InstancePtr is a pointer to the instance to be worked on.
-* @param Arg is the address passed by the user that is to be sent as
-* argument along with the command.
-* @param BlkCnt - Block count passed by the user.
-* @param Buff - Pointer to the data buffer for a DMA transfer.
-*
-* @return
-* - XST_SUCCESS if initialization was successful
-* - XST_FAILURE if failure - could be because another transfer
-* is in progress or command or data inhibit is set
-*
-******************************************************************************/
-s32 XSdPs_ReadPolled(XSdPs *InstancePtr, u32 Arg, u32 BlkCnt, u8 *Buff)
-{
- s32 Status;
- u32 PresentStateReg;
- u32 StatusReg;
-
- if ((InstancePtr->HC_Version != XSDPS_HC_SPEC_V3) ||
- ((InstancePtr->Host_Caps & XSDPS_CAPS_SLOT_TYPE_MASK)
- != XSDPS_CAPS_EMB_SLOT)) {
- if(InstancePtr->Config.CardDetect != 0U) {
- /* Check status to ensure card is initialized */
- PresentStateReg = XSdPs_ReadReg(InstancePtr->Config.BaseAddress,
- XSDPS_PRES_STATE_OFFSET);
- if ((PresentStateReg & XSDPS_PSR_CARD_INSRT_MASK) == 0x0U) {
- Status = XST_FAILURE;
- goto RETURN_PATH;
- }
- }
- }
-
- /* Set block size to 512 if not already set */
- if( XSdPs_ReadReg(InstancePtr->Config.BaseAddress,
- XSDPS_BLK_SIZE_OFFSET) != XSDPS_BLK_SIZE_512_MASK ) {
- Status = XSdPs_SetBlkSize(InstancePtr,
- XSDPS_BLK_SIZE_512_MASK);
- if (Status != XST_SUCCESS) {
- Status = XST_FAILURE;
- goto RETURN_PATH;
- }
- }
-
- XSdPs_SetupADMA2DescTbl(InstancePtr, BlkCnt, Buff);
-
- XSdPs_WriteReg16(InstancePtr->Config.BaseAddress,
- XSDPS_XFER_MODE_OFFSET,
- XSDPS_TM_AUTO_CMD12_EN_MASK |
- XSDPS_TM_BLK_CNT_EN_MASK | XSDPS_TM_DAT_DIR_SEL_MASK |
- XSDPS_TM_DMA_EN_MASK | XSDPS_TM_MUL_SIN_BLK_SEL_MASK);
-
- Xil_DCacheInvalidateRange((INTPTR)Buff, BlkCnt * XSDPS_BLK_SIZE_512_MASK);
-
- /* Send block read command */
- Status = XSdPs_CmdTransfer(InstancePtr, CMD18, Arg, BlkCnt);
- 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);
- Status = (s32)XSdPs_ReadReg(InstancePtr->Config.BaseAddress,
- XSDPS_RESP0_OFFSET);
-
- Status = XST_SUCCESS;
-
-RETURN_PATH:
- return Status;
-}
-
-/*****************************************************************************/
-/**
-* This function performs SD write in polled mode.
-*
-* @param InstancePtr is a pointer to the instance to be worked on.
-* @param Arg is the address passed by the user that is to be sent as
-* argument along with the command.
-* @param BlkCnt - Block count passed by the user.
-* @param Buff - Pointer to the data buffer for a DMA transfer.
-*
-* @return
-* - XST_SUCCESS if initialization was successful
-* - XST_FAILURE if failure - could be because another transfer
-* is in progress or command or data inhibit is set
-*
-******************************************************************************/
-s32 XSdPs_WritePolled(XSdPs *InstancePtr, u32 Arg, u32 BlkCnt, const u8 *Buff)
-{
- s32 Status;
- u32 PresentStateReg;
- u32 StatusReg;
-
- if ((InstancePtr->HC_Version != XSDPS_HC_SPEC_V3) ||
- ((InstancePtr->Host_Caps & XSDPS_CAPS_SLOT_TYPE_MASK)
- != XSDPS_CAPS_EMB_SLOT)) {
- if(InstancePtr->Config.CardDetect != 0U) {
- /* Check status to ensure card is initialized */
- PresentStateReg = XSdPs_ReadReg(InstancePtr->Config.BaseAddress,
- XSDPS_PRES_STATE_OFFSET);
- if ((PresentStateReg & XSDPS_PSR_CARD_INSRT_MASK) == 0x0U) {
- Status = XST_FAILURE;
- goto RETURN_PATH;
- }
- }
- }
-
- /* Set block size to 512 if not already set */
- if( XSdPs_ReadReg(InstancePtr->Config.BaseAddress,
- XSDPS_BLK_SIZE_OFFSET) != XSDPS_BLK_SIZE_512_MASK ) {
- Status = XSdPs_SetBlkSize(InstancePtr,
- XSDPS_BLK_SIZE_512_MASK);
- if (Status != XST_SUCCESS) {
- Status = XST_FAILURE;
- goto RETURN_PATH;
- }
-
- }
-
- XSdPs_SetupADMA2DescTbl(InstancePtr, BlkCnt, Buff);
- Xil_DCacheFlushRange((INTPTR)Buff, BlkCnt * XSDPS_BLK_SIZE_512_MASK);
-
- XSdPs_WriteReg16(InstancePtr->Config.BaseAddress,
- XSDPS_XFER_MODE_OFFSET,
- XSDPS_TM_AUTO_CMD12_EN_MASK |
- XSDPS_TM_BLK_CNT_EN_MASK |
- XSDPS_TM_MUL_SIN_BLK_SEL_MASK | XSDPS_TM_DMA_EN_MASK);
-
- /* Send block write command */
- Status = XSdPs_CmdTransfer(InstancePtr, CMD25, Arg, 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 = XST_SUCCESS;
-
- RETURN_PATH:
- return Status;
-}
-
-/*****************************************************************************/
-/**
-*
-* Selects card and sets default block size
-*
-*
-* @param InstancePtr is a pointer to the XSdPs instance.
-*
-* @return
-* - XST_SUCCESS if successful.
-* - XST_FAILURE if fail.
-*
-* @note None.
-*
-******************************************************************************/
-s32 XSdPs_Select_Card (XSdPs *InstancePtr)
-{
- s32 Status = 0;
-
- /* Send CMD7 - Select card */
- Status = XSdPs_CmdTransfer(InstancePtr, CMD7,
- InstancePtr->RelCardAddr, 0U);
- if (Status != XST_SUCCESS) {
- Status = XST_FAILURE;
- goto RETURN_PATH;
- }
-
-RETURN_PATH:
- return Status;
-
-}
-
-/*****************************************************************************/
-/**
-*
-* API to setup ADMA2 descriptor table
-*
-*
-* @param InstancePtr is a pointer to the XSdPs instance.
-* @param BlkCnt - block count.
-* @param Buff pointer to data buffer.
-*
-* @return None
-*
-* @note None.
-*
-******************************************************************************/
-void XSdPs_SetupADMA2DescTbl(XSdPs *InstancePtr, u32 BlkCnt, const u8 *Buff)
-{
- u32 TotalDescLines = 0U;
- u32 DescNum = 0U;
- u32 BlkSize = 0U;
-
- /* Setup ADMA2 - Write descriptor table and point ADMA SAR to it */
- BlkSize = XSdPs_ReadReg16(InstancePtr->Config.BaseAddress,
- XSDPS_BLK_SIZE_OFFSET);
- BlkSize = BlkSize & XSDPS_BLK_SIZE_MASK;
-
- if((BlkCnt*BlkSize) < XSDPS_DESC_MAX_LENGTH) {
-
- TotalDescLines = 1U;
-
- }else {
-
- TotalDescLines = ((BlkCnt*BlkSize) / XSDPS_DESC_MAX_LENGTH);
- if (((BlkCnt * BlkSize) % XSDPS_DESC_MAX_LENGTH) != 0U) {
- TotalDescLines += 1U;
- }
-
- }
-
- for (DescNum = 0U; DescNum < (TotalDescLines-1); DescNum++) {
- InstancePtr->Adma2_DescrTbl[DescNum].Address =
- (u32)((UINTPTR)Buff + (DescNum*XSDPS_DESC_MAX_LENGTH));
- InstancePtr->Adma2_DescrTbl[DescNum].Attribute =
- XSDPS_DESC_TRAN | XSDPS_DESC_VALID;
- /* This will write '0' to length field which indicates 65536 */
- InstancePtr->Adma2_DescrTbl[DescNum].Length =
- (u16)XSDPS_DESC_MAX_LENGTH;
- }
-
- InstancePtr->Adma2_DescrTbl[TotalDescLines-1].Address =
- (u32)((UINTPTR)Buff + (DescNum*XSDPS_DESC_MAX_LENGTH));
-
- InstancePtr->Adma2_DescrTbl[TotalDescLines-1].Attribute =
- XSDPS_DESC_TRAN | XSDPS_DESC_END | XSDPS_DESC_VALID;
-
- InstancePtr->Adma2_DescrTbl[TotalDescLines-1].Length =
- (u16)((BlkCnt*BlkSize) - (DescNum*XSDPS_DESC_MAX_LENGTH));
-
-
- XSdPs_WriteReg(InstancePtr->Config.BaseAddress, XSDPS_ADMA_SAR_OFFSET,
- (u32)(UINTPTR)&(InstancePtr->Adma2_DescrTbl[0]));
-
- Xil_DCacheFlushRange((INTPTR)&(InstancePtr->Adma2_DescrTbl[0]),
- sizeof(XSdPs_Adma2Descriptor) * 32U);
-
-}
-
-/*****************************************************************************/
-/**
-* Mmc initialization is done in this function
-*
-*
-* @param InstancePtr is a pointer to the instance to be worked on.
-*
-* @return
-* - XST_SUCCESS if initialization was successful
-* - XST_FAILURE if failure - could be because
-* a) MMC is already initialized
-* b) There is no card inserted
-* c) One of the steps (commands) in the initialization
-* cycle failed
-* @note This function initializes the SD card by following its
-* initialization and identification state diagram.
-* CMD0 is sent to reset card.
-* CMD1 sent to identify voltage and high capacity support
-* CMD2 and CMD3 are sent to obtain Card ID and
-* Relative card address respectively.
-* CMD9 is sent to read the card specific data.
-*
-******************************************************************************/
-s32 XSdPs_MmcCardInitialize(XSdPs *InstancePtr)
-{
- u32 PresentStateReg;
- s32 Status;
- u32 RespOCR;
- u32 CSD[4];
-
- Xil_AssertNonvoid(InstancePtr != NULL);
- Xil_AssertNonvoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY);
-
- if ((InstancePtr->HC_Version != XSDPS_HC_SPEC_V3) ||
- ((InstancePtr->Host_Caps & XSDPS_CAPS_SLOT_TYPE_MASK)
- != XSDPS_CAPS_EMB_SLOT)) {
- if(InstancePtr->Config.CardDetect != 0U) {
- /*
- * Check the present state register to make sure
- * card is inserted and detected by host controller
- */
- PresentStateReg = XSdPs_ReadReg(InstancePtr->Config.BaseAddress,
- XSDPS_PRES_STATE_OFFSET);
- if ((PresentStateReg & XSDPS_PSR_CARD_INSRT_MASK) == 0U) {
- Status = XST_FAILURE;
- goto RETURN_PATH;
- }
- }
- }
-
- /* CMD0 no response expected */
- Status = XSdPs_CmdTransfer(InstancePtr, CMD0, 0U, 0U);
- if (Status != XST_SUCCESS) {
- Status = XST_FAILURE;
- goto RETURN_PATH;
- }
-
- RespOCR = 0U;
- /* Send CMD1 while card is still busy with power up */
- while ((RespOCR & XSDPS_RESPOCR_READY) == 0U) {
-
- /* Host High Capacity support & High volage window */
- Status = XSdPs_CmdTransfer(InstancePtr, CMD1,
- XSDPS_ACMD41_HCS | XSDPS_CMD1_HIGH_VOL, 0U);
- if (Status != XST_SUCCESS) {
- Status = XST_FAILURE;
- goto RETURN_PATH;
- }
-
- /* Response with card capacity */
- RespOCR = XSdPs_ReadReg(InstancePtr->Config.BaseAddress,
- XSDPS_RESP0_OFFSET);
-
- }
-
- /* Update HCS support flag based on card capacity response */
- if ((RespOCR & XSDPS_ACMD41_HCS) != 0U) {
- InstancePtr->HCS = 1U;
- }
-
- /* CMD2 for Card ID */
- Status = XSdPs_CmdTransfer(InstancePtr, CMD2, 0U, 0U);
- if (Status != XST_SUCCESS) {
- Status = XST_FAILURE;
- goto RETURN_PATH;
- }
-
- InstancePtr->CardID[0] =
- XSdPs_ReadReg16(InstancePtr->Config.BaseAddress,
- XSDPS_RESP0_OFFSET);
- InstancePtr->CardID[1] =
- XSdPs_ReadReg16(InstancePtr->Config.BaseAddress,
- XSDPS_RESP1_OFFSET);
- InstancePtr->CardID[2] =
- XSdPs_ReadReg16(InstancePtr->Config.BaseAddress,
- XSDPS_RESP2_OFFSET);
- InstancePtr->CardID[3] =
- XSdPs_ReadReg16(InstancePtr->Config.BaseAddress,
- XSDPS_RESP3_OFFSET);
-
- /* Set relative card address */
- InstancePtr->RelCardAddr = 0x12340000U;
- Status = XSdPs_CmdTransfer(InstancePtr, CMD3, (InstancePtr->RelCardAddr), 0U);
- if (Status != XST_SUCCESS) {
- Status = XST_FAILURE;
- goto RETURN_PATH;
- }
-
- Status = XSdPs_CmdTransfer(InstancePtr, CMD9, (InstancePtr->RelCardAddr), 0U);
- if (Status != XST_SUCCESS) {
- Status = XST_FAILURE;
- goto RETURN_PATH;
- }
-
- /*
- * Card specific data is read.
- * Currently not used for any operation.
- */
- CSD[0] = XSdPs_ReadReg(InstancePtr->Config.BaseAddress,
- XSDPS_RESP0_OFFSET);
- CSD[1] = XSdPs_ReadReg(InstancePtr->Config.BaseAddress,
- XSDPS_RESP1_OFFSET);
- CSD[2] = XSdPs_ReadReg(InstancePtr->Config.BaseAddress,
- XSDPS_RESP2_OFFSET);
- CSD[3] = XSdPs_ReadReg(InstancePtr->Config.BaseAddress,
- XSDPS_RESP3_OFFSET);
-
- InstancePtr->Card_Version = (CSD[3] & CSD_SPEC_VER_MASK) >>18U;
-
- Status = XST_SUCCESS;
-
-RETURN_PATH:
- return Status;
-
-}
-/** @} */
projects / freertos / blobdiff