libs/rt-thread
libs
/
rt-thread
4
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity
rt-thread/bsp/imxrt/libraries/MIMXRT1020/MIMXRT1021/drivers/fsl_flexspi.c

1158 lines
40 KiB
C
Raw Blame History

/*
* Copyright (c) 2016, Freescale Semiconductor, Inc.
* Copyright 2016-2021 NXP
* All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include "fsl_flexspi.h"
/* Component ID definition, used by tools. */
#ifndef FSL_COMPONENT_ID
#define FSL_COMPONENT_ID "platform.drivers.flexspi"
#endif
/*******************************************************************************
* Definitions
******************************************************************************/
#define FREQ_1MHz (1000000UL)
#define FLEXSPI_DLLCR_DEFAULT (0x100UL)
#define FLEXSPI_LUT_KEY_VAL (0x5AF05AF0UL)
enum
{
kFLEXSPI_DelayCellUnitMin = 75, /* 75ps. */
kFLEXSPI_DelayCellUnitMax = 225, /* 225ps. */
};
enum
{
kFLEXSPI_FlashASampleClockSlaveDelayLocked =
FLEXSPI_STS2_ASLVLOCK_MASK, /* Flash A sample clock slave delay line locked. */
kFLEXSPI_FlashASampleClockRefDelayLocked =
FLEXSPI_STS2_AREFLOCK_MASK, /* Flash A sample clock reference delay line locked. */
kFLEXSPI_FlashBSampleClockSlaveDelayLocked =
FLEXSPI_STS2_BSLVLOCK_MASK, /* Flash B sample clock slave delay line locked. */
kFLEXSPI_FlashBSampleClockRefDelayLocked =
FLEXSPI_STS2_BREFLOCK_MASK, /* Flash B sample clock reference delay line locked. */
};
/*! @brief Common sets of flags used by the driver, _flexspi_flag_constants. */
enum
{
/*! IRQ sources enabled by the non-blocking transactional API. */
kIrqFlags = kFLEXSPI_IpTxFifoWatermarkEmptyFlag | kFLEXSPI_IpRxFifoWatermarkAvailableFlag |
kFLEXSPI_SequenceExecutionTimeoutFlag | kFLEXSPI_IpCommandSequenceErrorFlag |
kFLEXSPI_IpCommandGrantTimeoutFlag | kFLEXSPI_IpCommandExecutionDoneFlag,
/*! Errors to check for. */
kErrorFlags = kFLEXSPI_SequenceExecutionTimeoutFlag | kFLEXSPI_IpCommandSequenceErrorFlag |
kFLEXSPI_IpCommandGrantTimeoutFlag,
};
/* FLEXSPI transfer state, _flexspi_transfer_state. */
enum
{
kFLEXSPI_Idle = 0x0U, /*!< Transfer is done. */
kFLEXSPI_BusyWrite = 0x1U, /*!< FLEXSPI is busy write transfer. */
kFLEXSPI_BusyRead = 0x2U, /*!< FLEXSPI is busy write transfer. */
};
/*! @brief Typedef for interrupt handler. */
typedef void (*flexspi_isr_t)(FLEXSPI_Type *base, flexspi_handle_t *handle);
/*******************************************************************************
* Prototypes
******************************************************************************/
static void FLEXSPI_Memset(void *src, uint8_t value, size_t length);
/*!
* @brief Calculate flash A/B sample clock DLL.
*
* @param base FLEXSPI base pointer.
* @param config Flash configuration parameters.
*/
static uint32_t FLEXSPI_CalculateDll(FLEXSPI_Type *base, flexspi_device_config_t *config);
/*******************************************************************************
* Variables
******************************************************************************/
/*! @brief Pointers to flexspi bases for each instance. */
static FLEXSPI_Type *const s_flexspiBases[] = FLEXSPI_BASE_PTRS;
/*! @brief Pointers to flexspi IRQ number for each instance. */
static const IRQn_Type s_flexspiIrqs[] = FLEXSPI_IRQS;
#if !(defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL)
/* Clock name array */
static const clock_ip_name_t s_flexspiClock[] = FLEXSPI_CLOCKS;
#endif /* FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL */
#if defined(FSL_DRIVER_TRANSFER_DOUBLE_WEAK_IRQ) && FSL_DRIVER_TRANSFER_DOUBLE_WEAK_IRQ
/*! @brief Pointers to flexspi handles for each instance. */
static flexspi_handle_t *s_flexspiHandle[ARRAY_SIZE(s_flexspiBases)];
#endif
#if defined(FSL_FEATURE_FLEXSPI_HAS_RESET) && FSL_FEATURE_FLEXSPI_HAS_RESET
/*! @brief Pointers to FLEXSPI resets for each instance. */
static const reset_ip_name_t s_flexspiResets[] = FLEXSPI_RSTS;
#endif
#if defined(FSL_DRIVER_TRANSFER_DOUBLE_WEAK_IRQ) && FSL_DRIVER_TRANSFER_DOUBLE_WEAK_IRQ
/*! @brief Pointer to flexspi IRQ handler. */
static flexspi_isr_t s_flexspiIsr;
#endif
/*******************************************************************************
* Code
******************************************************************************/
/* To avoid compiler opitimizing this API into memset() in library. */
#if defined(__ICCARM__)
#pragma optimize = none
#endif /* defined(__ICCARM__) */
static void FLEXSPI_Memset(void *src, uint8_t value, size_t length)
{
assert(src != NULL);
uint8_t *p = src;
for (uint32_t i = 0U; i < length; i++)
{
*p = value;
p++;
}
}
uint32_t FLEXSPI_GetInstance(FLEXSPI_Type *base)
{
uint32_t instance;
/* Find the instance index from base address mappings. */
for (instance = 0; instance < ARRAY_SIZE(s_flexspiBases); instance++)
{
if (s_flexspiBases[instance] == base)
{
break;
}
}
assert(instance < ARRAY_SIZE(s_flexspiBases));
return instance;
}
static uint32_t FLEXSPI_CalculateDll(FLEXSPI_Type *base, flexspi_device_config_t *config)
{
bool isUnifiedConfig = true;
uint32_t flexspiDllValue;
uint32_t dllValue;
uint32_t temp;
#if defined(FSL_FEATURE_FLEXSPI_DQS_DELAY_PS) && FSL_FEATURE_FLEXSPI_DQS_DELAY_PS
uint32_t internalDqsDelayPs = FSL_FEATURE_FLEXSPI_DQS_DELAY_PS;
#endif
uint32_t rxSampleClock = (base->MCR0 & FLEXSPI_MCR0_RXCLKSRC_MASK) >> FLEXSPI_MCR0_RXCLKSRC_SHIFT;
switch (rxSampleClock)
{
case (uint32_t)kFLEXSPI_ReadSampleClkLoopbackInternally:
case (uint32_t)kFLEXSPI_ReadSampleClkLoopbackFromDqsPad:
case (uint32_t)kFLEXSPI_ReadSampleClkLoopbackFromSckPad:
isUnifiedConfig = true;
break;
case (uint32_t)kFLEXSPI_ReadSampleClkExternalInputFromDqsPad:
if (config->isSck2Enabled)
{
isUnifiedConfig = true;
}
else
{
isUnifiedConfig = false;
}
break;
default:
assert(false);
break;
}
if (isUnifiedConfig)
{
flexspiDllValue = FLEXSPI_DLLCR_DEFAULT; /* 1 fixed delay cells in DLL delay chain) */
}
else
{
if (config->flexspiRootClk >= 100U * FREQ_1MHz)
{
#if defined(FSL_FEATURE_FLEXSPI_DQS_DELAY_MIN) && FSL_FEATURE_FLEXSPI_DQS_DELAY_MIN
/* DLLEN = 1, SLVDLYTARGET = 0x0, */
flexspiDllValue = FLEXSPI_DLLCR_DLLEN(1) | FLEXSPI_DLLCR_SLVDLYTARGET(0x00);
#else
/* DLLEN = 1, SLVDLYTARGET = 0xF, */
flexspiDllValue = FLEXSPI_DLLCR_DLLEN(1) | FLEXSPI_DLLCR_SLVDLYTARGET(0x0F);
#endif
}
else
{
temp = (uint32_t)config->dataValidTime * 1000U; /* Convert data valid time in ns to ps. */
dllValue = temp / (uint32_t)kFLEXSPI_DelayCellUnitMin;
if (dllValue * (uint32_t)kFLEXSPI_DelayCellUnitMin < temp)
{
dllValue++;
}
flexspiDllValue = FLEXSPI_DLLCR_OVRDEN(1) | FLEXSPI_DLLCR_OVRDVAL(dllValue);
}
}
return flexspiDllValue;
}
status_t FLEXSPI_CheckAndClearError(FLEXSPI_Type *base, uint32_t status)
{
status_t result = kStatus_Success;
/* Check for error. */
status &= (uint32_t)kErrorFlags;
if (0U != status)
{
/* Select the correct error code.. */
if (0U != (status & (uint32_t)kFLEXSPI_SequenceExecutionTimeoutFlag))
{
result = kStatus_FLEXSPI_SequenceExecutionTimeout;
}
else if (0U != (status & (uint32_t)kFLEXSPI_IpCommandSequenceErrorFlag))
{
result = kStatus_FLEXSPI_IpCommandSequenceError;
}
else if (0U != (status & (uint32_t)kFLEXSPI_IpCommandGrantTimeoutFlag))
{
result = kStatus_FLEXSPI_IpCommandGrantTimeout;
}
else
{
assert(false);
}
/* Clear the flags. */
FLEXSPI_ClearInterruptStatusFlags(base, status);
/* Reset fifos. These flags clear automatically. */
base->IPTXFCR |= FLEXSPI_IPTXFCR_CLRIPTXF_MASK;
base->IPRXFCR |= FLEXSPI_IPRXFCR_CLRIPRXF_MASK;
}
return result;
}
/*!
* brief Initializes the FLEXSPI module and internal state.
*
* This function enables the clock for FLEXSPI and also configures the FLEXSPI with the
* input configure parameters. Users should call this function before any FLEXSPI operations.
*
* param base FLEXSPI peripheral base address.
* param config FLEXSPI configure structure.
*/
void FLEXSPI_Init(FLEXSPI_Type *base, const flexspi_config_t *config)
{
uint32_t configValue = 0;
uint8_t i = 0;
#if !(defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL)
/* Enable the flexspi clock */
(void)CLOCK_EnableClock(s_flexspiClock[FLEXSPI_GetInstance(base)]);
#endif /* FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL */
#if defined(FSL_FEATURE_FLEXSPI_HAS_RESET) && FSL_FEATURE_FLEXSPI_HAS_RESET
/* Reset the FLEXSPI module */
RESET_PeripheralReset(s_flexspiResets[FLEXSPI_GetInstance(base)]);
#endif
/* Reset peripheral before configuring it. */
base->MCR0 &= ~FLEXSPI_MCR0_MDIS_MASK;
FLEXSPI_SoftwareReset(base);
/* Configure MCR0 configuration items. */
configValue = FLEXSPI_MCR0_RXCLKSRC(config->rxSampleClock) | FLEXSPI_MCR0_DOZEEN(config->enableDoze) |
FLEXSPI_MCR0_IPGRANTWAIT(config->ipGrantTimeoutCycle) |
FLEXSPI_MCR0_AHBGRANTWAIT(config->ahbConfig.ahbGrantTimeoutCycle) |
FLEXSPI_MCR0_SCKFREERUNEN(config->enableSckFreeRunning) |
FLEXSPI_MCR0_HSEN(config->enableHalfSpeedAccess) |
#if !(defined(FSL_FEATURE_FLEXSPI_HAS_NO_MCR0_COMBINATIONEN) && FSL_FEATURE_FLEXSPI_HAS_NO_MCR0_COMBINATIONEN)
FLEXSPI_MCR0_COMBINATIONEN(config->enableCombination) |
#endif
#if !(defined(FSL_FEATURE_FLEXSPI_HAS_NO_MCR0_ATDFEN) && FSL_FEATURE_FLEXSPI_HAS_NO_MCR0_ATDFEN)
FLEXSPI_MCR0_ATDFEN(config->ahbConfig.enableAHBWriteIpTxFifo) |
#endif
#if !(defined(FSL_FEATURE_FLEXSPI_HAS_NO_MCR0_ARDFEN) && FSL_FEATURE_FLEXSPI_HAS_NO_MCR0_ARDFEN)
FLEXSPI_MCR0_ARDFEN(config->ahbConfig.enableAHBWriteIpRxFifo) |
#endif
FLEXSPI_MCR0_MDIS_MASK;
base->MCR0 = configValue;
/* Configure MCR1 configurations. */
configValue =
FLEXSPI_MCR1_SEQWAIT(config->seqTimeoutCycle) | FLEXSPI_MCR1_AHBBUSWAIT(config->ahbConfig.ahbBusTimeoutCycle);
base->MCR1 = configValue;
/* Configure MCR2 configurations. */
configValue = base->MCR2;
configValue &= ~(FLEXSPI_MCR2_RESUMEWAIT_MASK | FLEXSPI_MCR2_SCKBDIFFOPT_MASK | FLEXSPI_MCR2_SAMEDEVICEEN_MASK |
FLEXSPI_MCR2_CLRAHBBUFOPT_MASK);
configValue |= FLEXSPI_MCR2_RESUMEWAIT(config->ahbConfig.resumeWaitCycle) |
FLEXSPI_MCR2_SCKBDIFFOPT(config->enableSckBDiffOpt) |
FLEXSPI_MCR2_SAMEDEVICEEN(config->enableSameConfigForAll) |
FLEXSPI_MCR2_CLRAHBBUFOPT(config->ahbConfig.enableClearAHBBufferOpt);
base->MCR2 = configValue;
/* Configure AHB control items. */
configValue = base->AHBCR;
configValue &= ~(FLEXSPI_AHBCR_READADDROPT_MASK | FLEXSPI_AHBCR_PREFETCHEN_MASK | FLEXSPI_AHBCR_BUFFERABLEEN_MASK |
FLEXSPI_AHBCR_CACHABLEEN_MASK);
configValue |= FLEXSPI_AHBCR_READADDROPT(config->ahbConfig.enableReadAddressOpt) |
FLEXSPI_AHBCR_PREFETCHEN(config->ahbConfig.enableAHBPrefetch) |
FLEXSPI_AHBCR_BUFFERABLEEN(config->ahbConfig.enableAHBBufferable) |
FLEXSPI_AHBCR_CACHABLEEN(config->ahbConfig.enableAHBCachable);
base->AHBCR = configValue;
/* Configure AHB rx buffers. */
for (i = 0; i < (uint32_t)FSL_FEATURE_FLEXSPI_AHB_BUFFER_COUNT; i++)
{
configValue = base->AHBRXBUFCR0[i];
configValue &= ~(FLEXSPI_AHBRXBUFCR0_PREFETCHEN_MASK | FLEXSPI_AHBRXBUFCR0_PRIORITY_MASK |
FLEXSPI_AHBRXBUFCR0_MSTRID_MASK | FLEXSPI_AHBRXBUFCR0_BUFSZ_MASK);
configValue |= FLEXSPI_AHBRXBUFCR0_PREFETCHEN(config->ahbConfig.buffer[i].enablePrefetch) |
FLEXSPI_AHBRXBUFCR0_PRIORITY(config->ahbConfig.buffer[i].priority) |
FLEXSPI_AHBRXBUFCR0_MSTRID(config->ahbConfig.buffer[i].masterIndex) |
FLEXSPI_AHBRXBUFCR0_BUFSZ((uint32_t)config->ahbConfig.buffer[i].bufferSize / 8U);
base->AHBRXBUFCR0[i] = configValue;
}
/* Configure IP Fifo watermarks. */
base->IPRXFCR &= ~FLEXSPI_IPRXFCR_RXWMRK_MASK;
base->IPRXFCR |= FLEXSPI_IPRXFCR_RXWMRK((uint32_t)config->rxWatermark / 8U - 1U);
base->IPTXFCR &= ~FLEXSPI_IPTXFCR_TXWMRK_MASK;
base->IPTXFCR |= FLEXSPI_IPTXFCR_TXWMRK((uint32_t)config->txWatermark / 8U - 1U);
/* Reset flash size on all ports */
for (i = 0; i < (uint32_t)kFLEXSPI_PortCount; i++)
{
base->FLSHCR0[i] = 0;
}
}
/*!
* brief Gets default settings for FLEXSPI.
*
* param config FLEXSPI configuration structure.
*/
void FLEXSPI_GetDefaultConfig(flexspi_config_t *config)
{
/* Initializes the configure structure to zero. */
FLEXSPI_Memset(config, 0, sizeof(*config));
config->rxSampleClock = kFLEXSPI_ReadSampleClkLoopbackInternally;
config->enableSckFreeRunning = false;
#if !(defined(FSL_FEATURE_FLEXSPI_HAS_NO_MCR0_COMBINATIONEN) && FSL_FEATURE_FLEXSPI_HAS_NO_MCR0_COMBINATIONEN)
config->enableCombination = false;
#endif
config->enableDoze = true;
config->enableHalfSpeedAccess = false;
config->enableSckBDiffOpt = false;
config->enableSameConfigForAll = false;
config->seqTimeoutCycle = 0xFFFFU;
config->ipGrantTimeoutCycle = 0xFFU;
config->txWatermark = 8;
config->rxWatermark = 8;
#if !(defined(FSL_FEATURE_FLEXSPI_HAS_NO_MCR0_ATDFEN) && FSL_FEATURE_FLEXSPI_HAS_NO_MCR0_ATDFEN)
config->ahbConfig.enableAHBWriteIpTxFifo = false;
#endif
#if !(defined(FSL_FEATURE_FLEXSPI_HAS_NO_MCR0_ARDFEN) && FSL_FEATURE_FLEXSPI_HAS_NO_MCR0_ARDFEN)
config->ahbConfig.enableAHBWriteIpRxFifo = false;
#endif
config->ahbConfig.ahbGrantTimeoutCycle = 0xFFU;
config->ahbConfig.ahbBusTimeoutCycle = 0xFFFFU;
config->ahbConfig.resumeWaitCycle = 0x20U;
FLEXSPI_Memset(config->ahbConfig.buffer, 0, sizeof(config->ahbConfig.buffer));
/* Use invalid master ID 0xF and buffer size 0 for the first several buffers. */
for (uint8_t i = 0; i < ((uint8_t)FSL_FEATURE_FLEXSPI_AHB_BUFFER_COUNT - 2U); i++)
{
config->ahbConfig.buffer[i].enablePrefetch = true; /* Default enable AHB prefetch. */
config->ahbConfig.buffer[i].masterIndex = 0xFU; /* Invalid master index which is not used, so will never hit. */
config->ahbConfig.buffer[i].bufferSize =
0; /* Default buffer size 0 for buffer0 to buffer(FSL_FEATURE_FLEXSPI_AHB_BUFFER_COUNT - 3U)*/
}
for (uint8_t i = ((uint8_t)FSL_FEATURE_FLEXSPI_AHB_BUFFER_COUNT - 2U);
i < (uint8_t)FSL_FEATURE_FLEXSPI_AHB_BUFFER_COUNT; i++)
{
config->ahbConfig.buffer[i].enablePrefetch = true; /* Default enable AHB prefetch. */
config->ahbConfig.buffer[i].bufferSize = 256U; /* Default buffer size 256 bytes. */
}
config->ahbConfig.enableClearAHBBufferOpt = false;
config->ahbConfig.enableReadAddressOpt = false;
config->ahbConfig.enableAHBPrefetch = false;
config->ahbConfig.enableAHBBufferable = false;
config->ahbConfig.enableAHBCachable = false;
}
/*!
* brief Deinitializes the FLEXSPI module.
*
* Clears the FLEXSPI state and FLEXSPI module registers.
* param base FLEXSPI peripheral base address.
*/
void FLEXSPI_Deinit(FLEXSPI_Type *base)
{
/* Reset peripheral. */
FLEXSPI_SoftwareReset(base);
}
/*!
* brief Update FLEXSPI DLL value depending on currently flexspi root clock.
*
* param base FLEXSPI peripheral base address.
* param config Flash configuration parameters.
* param port FLEXSPI Operation port.
*/
void FLEXSPI_UpdateDllValue(FLEXSPI_Type *base, flexspi_device_config_t *config, flexspi_port_t port)
{
uint32_t configValue = 0;
uint32_t statusValue = 0;
uint8_t index = (uint8_t)port >> 1U; /* PortA with index 0, PortB with index 1. */
/* Wait for bus to be idle before changing flash configuration. */
while (!FLEXSPI_GetBusIdleStatus(base))
{
}
/* Configure DLL. */
configValue = FLEXSPI_CalculateDll(base, config);
base->DLLCR[index] = configValue;
/* Exit stop mode. */
base->MCR0 &= ~FLEXSPI_MCR0_MDIS_MASK;
/* According to ERR011377, need to delay at least 100 NOPs to ensure the DLL is locked. */
statusValue =
(index == 0U) ?
((uint32_t)kFLEXSPI_FlashASampleClockSlaveDelayLocked |
(uint32_t)kFLEXSPI_FlashASampleClockRefDelayLocked) :
((uint32_t)kFLEXSPI_FlashBSampleClockSlaveDelayLocked | (uint32_t)kFLEXSPI_FlashBSampleClockRefDelayLocked);
if (0U != (configValue & FLEXSPI_DLLCR_DLLEN_MASK))
{
/* Wait slave delay line locked and slave reference delay line locked. */
while ((base->STS2 & statusValue) != statusValue)
{
}
/* Wait at least 100 NOPs*/
for (uint8_t delay = 100U; delay > 0U; delay--)
{
__NOP();
}
}
}
/*!
* brief Configures the connected device parameter.
*
* This function configures the connected device relevant parameters, such as the size, command, and so on.
* The flash configuration value cannot have a default value. The user needs to configure it according to the
* connected device.
*
* param base FLEXSPI peripheral base address.
* param config Flash configuration parameters.
* param port FLEXSPI Operation port.
*/
void FLEXSPI_SetFlashConfig(FLEXSPI_Type *base, flexspi_device_config_t *config, flexspi_port_t port)
{
uint32_t configValue = 0;
uint8_t index = (uint8_t)port >> 1U; /* PortA with index 0, PortB with index 1. */
/* Wait for bus to be idle before changing flash configuration. */
while (!FLEXSPI_GetBusIdleStatus(base))
{
}
/* Configure flash size. */
base->FLSHCR0[port] = config->flashSize;
/* Configure flash parameters. */
base->FLSHCR1[port] = FLEXSPI_FLSHCR1_CSINTERVAL(config->CSInterval) |
FLEXSPI_FLSHCR1_CSINTERVALUNIT(config->CSIntervalUnit) |
FLEXSPI_FLSHCR1_TCSH(config->CSHoldTime) | FLEXSPI_FLSHCR1_TCSS(config->CSSetupTime) |
FLEXSPI_FLSHCR1_CAS(config->columnspace) | FLEXSPI_FLSHCR1_WA(config->enableWordAddress);
/* Configure AHB operation items. */
configValue = base->FLSHCR2[port];
configValue &= ~(FLEXSPI_FLSHCR2_AWRWAITUNIT_MASK | FLEXSPI_FLSHCR2_AWRWAIT_MASK | FLEXSPI_FLSHCR2_AWRSEQNUM_MASK |
FLEXSPI_FLSHCR2_AWRSEQID_MASK | FLEXSPI_FLSHCR2_ARDSEQNUM_MASK | FLEXSPI_FLSHCR2_ARDSEQID_MASK);
configValue |=
FLEXSPI_FLSHCR2_AWRWAITUNIT(config->AHBWriteWaitUnit) | FLEXSPI_FLSHCR2_AWRWAIT(config->AHBWriteWaitInterval);
if (config->AWRSeqNumber > 0U)
{
configValue |= FLEXSPI_FLSHCR2_AWRSEQID((uint32_t)config->AWRSeqIndex) |
FLEXSPI_FLSHCR2_AWRSEQNUM((uint32_t)config->AWRSeqNumber - 1U);
}
if (config->ARDSeqNumber > 0U)
{
configValue |= FLEXSPI_FLSHCR2_ARDSEQID((uint32_t)config->ARDSeqIndex) |
FLEXSPI_FLSHCR2_ARDSEQNUM((uint32_t)config->ARDSeqNumber - 1U);
}
base->FLSHCR2[port] = configValue;
/* Configure DLL. */
FLEXSPI_UpdateDllValue(base, config, port);
/* Step into stop mode. */
base->MCR0 |= FLEXSPI_MCR0_MDIS_MASK;
/* Configure write mask. */
if (config->enableWriteMask)
{
base->FLSHCR4 &= ~FLEXSPI_FLSHCR4_WMOPT1_MASK;
}
else
{
base->FLSHCR4 |= FLEXSPI_FLSHCR4_WMOPT1_MASK;
}
if (index == 0U) /*PortA*/
{
base->FLSHCR4 &= ~FLEXSPI_FLSHCR4_WMENA_MASK;
base->FLSHCR4 |= FLEXSPI_FLSHCR4_WMENA(config->enableWriteMask);
}
else
{
base->FLSHCR4 &= ~FLEXSPI_FLSHCR4_WMENB_MASK;
base->FLSHCR4 |= FLEXSPI_FLSHCR4_WMENB(config->enableWriteMask);
}
/* Exit stop mode. */
base->MCR0 &= ~FLEXSPI_MCR0_MDIS_MASK;
/* Wait for bus to be idle before use it access to external flash. */
while (!FLEXSPI_GetBusIdleStatus(base))
{
}
}
/*! brief Updates the LUT table.
*
* param base FLEXSPI peripheral base address.
* param index From which index start to update. It could be any index of the LUT table, which
* also allows user to update command content inside a command. Each command consists of up to
* 8 instructions and occupy 4*32-bit memory.
* param cmd Command sequence array.
* param count Number of sequences.
*/
void FLEXSPI_UpdateLUT(FLEXSPI_Type *base, uint32_t index, const uint32_t *cmd, uint32_t count)
{
assert(index < 64U);
uint32_t i = 0;
volatile uint32_t *lutBase;
/* Wait for bus to be idle before changing flash configuration. */
while (!FLEXSPI_GetBusIdleStatus(base))
{
}
/* Unlock LUT for update. */
base->LUTKEY = FLEXSPI_LUT_KEY_VAL;
base->LUTCR = 0x02;
lutBase = &base->LUT[index];
for (i = 0; i < count; i++)
{
*lutBase++ = *cmd++;
}
/* Lock LUT. */
base->LUTKEY = FLEXSPI_LUT_KEY_VAL;
base->LUTCR = 0x01;
}
/*! brief Update read sample clock source
*
* param base FLEXSPI peripheral base address.
* param clockSource clockSource of type #flexspi_read_sample_clock_t
*/
void FLEXSPI_UpdateRxSampleClock(FLEXSPI_Type *base, flexspi_read_sample_clock_t clockSource)
{
uint32_t mcr0Val;
/* Wait for bus to be idle before changing flash configuration. */
while (!FLEXSPI_GetBusIdleStatus(base))
{
}
mcr0Val = base->MCR0;
mcr0Val &= ~FLEXSPI_MCR0_RXCLKSRC_MASK;
mcr0Val |= FLEXSPI_MCR0_RXCLKSRC(clockSource);
base->MCR0 = mcr0Val;
/* Reset peripheral. */
FLEXSPI_SoftwareReset(base);
}
/*!
* brief Sends a buffer of data bytes using blocking method.
* note This function blocks via polling until all bytes have been sent.
* param base FLEXSPI peripheral base address
* param buffer The data bytes to send
* param size The number of data bytes to send
* retval kStatus_Success write success without error
* retval kStatus_FLEXSPI_SequenceExecutionTimeout sequence execution timeout
* retval kStatus_FLEXSPI_IpCommandSequenceError IP command sequence error detected
* retval kStatus_FLEXSPI_IpCommandGrantTimeout IP command grant timeout detected
*/
status_t FLEXSPI_WriteBlocking(FLEXSPI_Type *base, uint32_t *buffer, size_t size)
{
uint32_t txWatermark = ((base->IPTXFCR & FLEXSPI_IPTXFCR_TXWMRK_MASK) >> FLEXSPI_IPTXFCR_TXWMRK_SHIFT) + 1U;
uint32_t status;
status_t result = kStatus_Success;
uint32_t i = 0;
/* Send data buffer */
while (0U != size)
{
/* Wait until there is room in the fifo. This also checks for errors. */
while (0U == ((status = base->INTR) & (uint32_t)kFLEXSPI_IpTxFifoWatermarkEmptyFlag))
{
}
result = FLEXSPI_CheckAndClearError(base, status);
if (kStatus_Success != result)
{
return result;
}
/* Write watermark level data into tx fifo . */
if (size >= 8U * txWatermark)
{
for (i = 0U; i < 2U * txWatermark; i++)
{
base->TFDR[i] = *buffer++;
}
size = size - 8U * txWatermark;
}
else
{
for (i = 0U; i < ((size + 3U) / 4U); i++)
{
base->TFDR[i] = *buffer++;
}
size = 0U;
}
/* Push a watermark level data into IP TX FIFO. */
base->INTR |= (uint32_t)kFLEXSPI_IpTxFifoWatermarkEmptyFlag;
}
return result;
}
/*!
* brief Receives a buffer of data bytes using a blocking method.
* note This function blocks via polling until all bytes have been sent.
* param base FLEXSPI peripheral base address
* param buffer The data bytes to send
* param size The number of data bytes to receive
* retval kStatus_Success read success without error
* retval kStatus_FLEXSPI_SequenceExecutionTimeout sequence execution timeout
* retval kStatus_FLEXSPI_IpCommandSequenceError IP command sequence error detected
* retval kStatus_FLEXSPI_IpCommandGrantTimeout IP command grant timeout detected
*/
status_t FLEXSPI_ReadBlocking(FLEXSPI_Type *base, uint32_t *buffer, size_t size)
{
uint32_t rxWatermark = ((base->IPRXFCR & FLEXSPI_IPRXFCR_RXWMRK_MASK) >> FLEXSPI_IPRXFCR_RXWMRK_SHIFT) + 1U;
uint32_t status;
status_t result = kStatus_Success;
uint32_t i = 0;
bool isReturn = false;
/* Send data buffer */
while (0U != size)
{
if (size >= 8U * rxWatermark)
{
/* Wait until there is room in the fifo. This also checks for errors. */
while (0U == ((status = base->INTR) & (uint32_t)kFLEXSPI_IpRxFifoWatermarkAvailableFlag))
{
result = FLEXSPI_CheckAndClearError(base, status);
if (kStatus_Success != result)
{
isReturn = true;
break;
}
}
}
else
{
/* Wait fill level. This also checks for errors. */
while (size > ((((base->IPRXFSTS) & FLEXSPI_IPRXFSTS_FILL_MASK) >> FLEXSPI_IPRXFSTS_FILL_SHIFT) * 8U))
{
result = FLEXSPI_CheckAndClearError(base, base->INTR);
if (kStatus_Success != result)
{
isReturn = true;
break;
}
}
}
if (isReturn)
{
break;
}
result = FLEXSPI_CheckAndClearError(base, base->INTR);
if (kStatus_Success != result)
{
break;
}
/* Read watermark level data from rx fifo . */
if (size >= 8U * rxWatermark)
{
for (i = 0U; i < 2U * rxWatermark; i++)
{
*buffer++ = base->RFDR[i];
}
size = size - 8U * rxWatermark;
}
else
{
for (i = 0U; i < ((size + 3U) / 4U); i++)
{
*buffer++ = base->RFDR[i];
}
size = 0;
}
/* Pop out a watermark level datas from IP RX FIFO. */
base->INTR |= (uint32_t)kFLEXSPI_IpRxFifoWatermarkAvailableFlag;
}
return result;
}
/*!
* brief Execute command to transfer a buffer data bytes using a blocking method.
* param base FLEXSPI peripheral base address
* param xfer pointer to the transfer structure.
* retval kStatus_Success command transfer success without error
* retval kStatus_FLEXSPI_SequenceExecutionTimeout sequence execution timeout
* retval kStatus_FLEXSPI_IpCommandSequenceError IP command sequence error detected
* retval kStatus_FLEXSPI_IpCommandGrantTimeout IP command grant timeout detected
*/
status_t FLEXSPI_TransferBlocking(FLEXSPI_Type *base, flexspi_transfer_t *xfer)
{
uint32_t configValue = 0;
status_t result = kStatus_Success;
/* Clear sequence pointer before sending data to external devices. */
base->FLSHCR2[xfer->port] |= FLEXSPI_FLSHCR2_CLRINSTRPTR_MASK;
/* Clear former pending status before start this transfer. */
base->INTR |= FLEXSPI_INTR_AHBCMDERR_MASK | FLEXSPI_INTR_IPCMDERR_MASK | FLEXSPI_INTR_AHBCMDGE_MASK |
FLEXSPI_INTR_IPCMDGE_MASK;
/* Configure base address. */
base->IPCR0 = xfer->deviceAddress;
/* Reset fifos. */
base->IPTXFCR |= FLEXSPI_IPTXFCR_CLRIPTXF_MASK;
base->IPRXFCR |= FLEXSPI_IPRXFCR_CLRIPRXF_MASK;
/* Configure data size. */
if ((xfer->cmdType == kFLEXSPI_Read) || (xfer->cmdType == kFLEXSPI_Write) || (xfer->cmdType == kFLEXSPI_Config))
{
configValue = FLEXSPI_IPCR1_IDATSZ(xfer->dataSize);
}
/* Configure sequence ID. */
configValue |=
FLEXSPI_IPCR1_ISEQID((uint32_t)xfer->seqIndex) | FLEXSPI_IPCR1_ISEQNUM((uint32_t)xfer->SeqNumber - 1U);
base->IPCR1 = configValue;
/* Start Transfer. */
base->IPCMD |= FLEXSPI_IPCMD_TRG_MASK;
if ((xfer->cmdType == kFLEXSPI_Write) || (xfer->cmdType == kFLEXSPI_Config))
{
result = FLEXSPI_WriteBlocking(base, xfer->data, xfer->dataSize);
}
else if (xfer->cmdType == kFLEXSPI_Read)
{
result = FLEXSPI_ReadBlocking(base, xfer->data, xfer->dataSize);
}
else
{
/* Empty else. */
}
/* Wait for bus to be idle before changing flash configuration. */
while (!FLEXSPI_GetBusIdleStatus(base))
{
}
if (xfer->cmdType == kFLEXSPI_Command)
{
result = FLEXSPI_CheckAndClearError(base, base->INTR);
}
return result;
}
/*!
* brief Initializes the FLEXSPI handle which is used in transactional functions.
*
* param base FLEXSPI peripheral base address.
* param handle pointer to flexspi_handle_t structure to store the transfer state.
* param callback pointer to user callback function.
* param userData user parameter passed to the callback function.
*/
void FLEXSPI_TransferCreateHandle(FLEXSPI_Type *base,
flexspi_handle_t *handle,
flexspi_transfer_callback_t callback,
void *userData)
{
assert(NULL != handle);
uint32_t instance = FLEXSPI_GetInstance(base);
/* Zero handle. */
(void)memset(handle, 0, sizeof(*handle));
/* Set callback and userData. */
handle->completionCallback = callback;
handle->userData = userData;
#if defined(FSL_DRIVER_TRANSFER_DOUBLE_WEAK_IRQ) && FSL_DRIVER_TRANSFER_DOUBLE_WEAK_IRQ
/* Save the context in global variables to support the double weak mechanism. */
s_flexspiHandle[instance] = handle;
s_flexspiIsr = FLEXSPI_TransferHandleIRQ;
#endif
/* Enable NVIC interrupt. */
(void)EnableIRQ(s_flexspiIrqs[instance]);
}
/*!
* brief Performs a interrupt non-blocking transfer on the FLEXSPI bus.
*
* note Calling the API returns immediately after transfer initiates. The user needs
* to call FLEXSPI_GetTransferCount to poll the transfer status to check whether
* the transfer is finished. If the return status is not kStatus_FLEXSPI_Busy, the transfer
* is finished. For FLEXSPI_Read, the dataSize should be multiple of rx watermark level, or
* FLEXSPI could not read data properly.
*
* param base FLEXSPI peripheral base address.
* param handle pointer to flexspi_handle_t structure which stores the transfer state.
* param xfer pointer to flexspi_transfer_t structure.
* retval kStatus_Success Successfully start the data transmission.
* retval kStatus_FLEXSPI_Busy Previous transmission still not finished.
*/
status_t FLEXSPI_TransferNonBlocking(FLEXSPI_Type *base, flexspi_handle_t *handle, flexspi_transfer_t *xfer)
{
uint32_t configValue = 0;
status_t result = kStatus_Success;
assert(NULL != handle);
assert(NULL != xfer);
/* Check if the I2C bus is idle - if not return busy status. */
if (handle->state != (uint32_t)kFLEXSPI_Idle)
{
result = kStatus_FLEXSPI_Busy;
}
else
{
handle->data = xfer->data;
handle->dataSize = xfer->dataSize;
handle->transferTotalSize = xfer->dataSize;
handle->state = (xfer->cmdType == kFLEXSPI_Read) ? (uint32_t)kFLEXSPI_BusyRead : (uint32_t)kFLEXSPI_BusyWrite;
/* Clear sequence pointer before sending data to external devices. */
base->FLSHCR2[xfer->port] |= FLEXSPI_FLSHCR2_CLRINSTRPTR_MASK;
/* Clear former pending status before start this transfer. */
base->INTR |= FLEXSPI_INTR_AHBCMDERR_MASK | FLEXSPI_INTR_IPCMDERR_MASK | FLEXSPI_INTR_AHBCMDGE_MASK |
FLEXSPI_INTR_IPCMDGE_MASK;
/* Configure base address. */
base->IPCR0 = xfer->deviceAddress;
/* Reset fifos. */
base->IPTXFCR |= FLEXSPI_IPTXFCR_CLRIPTXF_MASK;
base->IPRXFCR |= FLEXSPI_IPRXFCR_CLRIPRXF_MASK;
/* Configure data size. */
if ((xfer->cmdType == kFLEXSPI_Read) || (xfer->cmdType == kFLEXSPI_Write))
{
configValue = FLEXSPI_IPCR1_IDATSZ(xfer->dataSize);
}
/* Configure sequence ID. */
configValue |=
FLEXSPI_IPCR1_ISEQID((uint32_t)xfer->seqIndex) | FLEXSPI_IPCR1_ISEQNUM((uint32_t)xfer->SeqNumber - 1U);
base->IPCR1 = configValue;
/* Start Transfer. */
base->IPCMD |= FLEXSPI_IPCMD_TRG_MASK;
if (handle->state == (uint32_t)kFLEXSPI_BusyRead)
{
FLEXSPI_EnableInterrupts(base, (uint32_t)kFLEXSPI_IpRxFifoWatermarkAvailableFlag |
(uint32_t)kFLEXSPI_SequenceExecutionTimeoutFlag |
(uint32_t)kFLEXSPI_IpCommandSequenceErrorFlag |
(uint32_t)kFLEXSPI_IpCommandGrantTimeoutFlag |
(uint32_t)kFLEXSPI_IpCommandExecutionDoneFlag);
}
else
{
FLEXSPI_EnableInterrupts(
base, (uint32_t)kFLEXSPI_IpTxFifoWatermarkEmptyFlag | (uint32_t)kFLEXSPI_SequenceExecutionTimeoutFlag |
(uint32_t)kFLEXSPI_IpCommandSequenceErrorFlag | (uint32_t)kFLEXSPI_IpCommandGrantTimeoutFlag |
(uint32_t)kFLEXSPI_IpCommandExecutionDoneFlag);
}
}
return result;
}
/*!
* brief Gets the master transfer status during a interrupt non-blocking transfer.
*
* param base FLEXSPI peripheral base address.
* param handle pointer to flexspi_handle_t structure which stores the transfer state.
* param count Number of bytes transferred so far by the non-blocking transaction.
* retval kStatus_InvalidArgument count is Invalid.
* retval kStatus_Success Successfully return the count.
*/
status_t FLEXSPI_TransferGetCount(FLEXSPI_Type *base, flexspi_handle_t *handle, size_t *count)
{
assert(NULL != handle);
status_t result = kStatus_Success;
if (handle->state == (uint32_t)kFLEXSPI_Idle)
{
result = kStatus_NoTransferInProgress;
}
else
{
*count = handle->transferTotalSize - handle->dataSize;
}
return result;
}
/*!
* brief Aborts an interrupt non-blocking transfer early.
*
* note This API can be called at any time when an interrupt non-blocking transfer initiates
* to abort the transfer early.
*
* param base FLEXSPI peripheral base address.
* param handle pointer to flexspi_handle_t structure which stores the transfer state
*/
void FLEXSPI_TransferAbort(FLEXSPI_Type *base, flexspi_handle_t *handle)
{
assert(NULL != handle);
FLEXSPI_DisableInterrupts(base, (uint32_t)kIrqFlags);
handle->state = (uint32_t)kFLEXSPI_Idle;
}
/*!
* brief Master interrupt handler.
*
* param base FLEXSPI peripheral base address.
* param handle pointer to flexspi_handle_t structure.
*/
void FLEXSPI_TransferHandleIRQ(FLEXSPI_Type *base, flexspi_handle_t *handle)
{
uint32_t status;
status_t result;
uint32_t intEnableStatus;
uint32_t txWatermark;
uint32_t rxWatermark;
uint8_t i = 0;
status = base->INTR;
intEnableStatus = base->INTEN;
/* Check if interrupt is enabled and status is alerted. */
if ((status & intEnableStatus) != 0U)
{
result = FLEXSPI_CheckAndClearError(base, status);
if ((result != kStatus_Success) && (handle->completionCallback != NULL))
{
FLEXSPI_TransferAbort(base, handle);
if (NULL != handle->completionCallback)
{
handle->completionCallback(base, handle, result, handle->userData);
}
}
else
{
if ((0U != (status & (uint32_t)kFLEXSPI_IpRxFifoWatermarkAvailableFlag)) &&
(handle->state == (uint32_t)kFLEXSPI_BusyRead))
{
rxWatermark = ((base->IPRXFCR & FLEXSPI_IPRXFCR_RXWMRK_MASK) >> FLEXSPI_IPRXFCR_RXWMRK_SHIFT) + 1U;
/* Read watermark level data from rx fifo . */
if (handle->dataSize >= 8U * rxWatermark)
{
/* Read watermark level data from rx fifo . */
for (i = 0U; i < 2U * rxWatermark; i++)
{
*handle->data++ = base->RFDR[i];
}
handle->dataSize = handle->dataSize - 8U * rxWatermark;
}
else
{
for (i = 0; i < (handle->dataSize + 3U) / 4U; i++)
{
*handle->data++ = base->RFDR[i];
}
handle->dataSize = 0;
}
/* Pop out a watermark level data from IP RX FIFO. */
base->INTR |= (uint32_t)kFLEXSPI_IpRxFifoWatermarkAvailableFlag;
}
if (0U != (status & (uint32_t)kFLEXSPI_IpCommandExecutionDoneFlag))
{
base->INTR |= (uint32_t)kFLEXSPI_IpCommandExecutionDoneFlag;
FLEXSPI_TransferAbort(base, handle);
if (NULL != handle->completionCallback)
{
handle->completionCallback(base, handle, kStatus_Success, handle->userData);
}
}
/* TX FIFO empty interrupt, push watermark level data into tx FIFO. */
if ((0U != (status & (uint32_t)kFLEXSPI_IpTxFifoWatermarkEmptyFlag)) &&
(handle->state == (uint32_t)kFLEXSPI_BusyWrite))
{
if (0U != handle->dataSize)
{
txWatermark = ((base->IPTXFCR & FLEXSPI_IPTXFCR_TXWMRK_MASK) >> FLEXSPI_IPTXFCR_TXWMRK_SHIFT) + 1U;
/* Write watermark level data into tx fifo . */
if (handle->dataSize >= 8U * txWatermark)
{
for (i = 0; i < 2U * txWatermark; i++)
{
base->TFDR[i] = *handle->data++;
}
handle->dataSize = handle->dataSize - 8U * txWatermark;
}
else
{
for (i = 0; i < (handle->dataSize + 3U) / 4U; i++)
{
base->TFDR[i] = *handle->data++;
}
handle->dataSize = 0;
}
/* Push a watermark level data into IP TX FIFO. */
base->INTR |= (uint32_t)kFLEXSPI_IpTxFifoWatermarkEmptyFlag;
}
}
else
{
/* Empty else */
}
}
}
else
{
/* Empty else */
}
}
#if defined(FSL_DRIVER_TRANSFER_DOUBLE_WEAK_IRQ) && FSL_DRIVER_TRANSFER_DOUBLE_WEAK_IRQ
#if defined(FLEXSPI)
void FLEXSPI_DriverIRQHandler(void);
void FLEXSPI_DriverIRQHandler(void)
{
s_flexspiIsr(FLEXSPI, s_flexspiHandle[0]);
SDK_ISR_EXIT_BARRIER;
}
#endif
#if defined(FLEXSPI0)
void FLEXSPI0_DriverIRQHandler(void);
void FLEXSPI0_DriverIRQHandler(void)
{
s_flexspiIsr(FLEXSPI0, s_flexspiHandle[0]);
SDK_ISR_EXIT_BARRIER;
}
#endif
#if defined(FLEXSPI1)
void FLEXSPI1_DriverIRQHandler(void);
void FLEXSPI1_DriverIRQHandler(void)
{
s_flexspiIsr(FLEXSPI1, s_flexspiHandle[1]);
SDK_ISR_EXIT_BARRIER;
}
#endif
#if defined(LSIO__FLEXSPI0)
void LSIO_OCTASPI0_INT_DriverIRQHandler(void);
void LSIO_OCTASPI0_INT_DriverIRQHandler(void)
{
s_flexspiIsr(LSIO__FLEXSPI0, s_flexspiHandle[0]);
SDK_ISR_EXIT_BARRIER;
}
#endif
#if defined(LSIO__FLEXSPI1)
void LSIO_OCTASPI1_INT_DriverIRQHandler(void);
void LSIO_OCTASPI1_INT_DriverIRQHandler(void)
{
s_flexspiIsr(LSIO__FLEXSPI1, s_flexspiHandle[1]);
SDK_ISR_EXIT_BARRIER;
}
#endif
#if defined(FSL_FEATURE_FLEXSPI_HAS_SHARED_IRQ0_IRQ1) && FSL_FEATURE_FLEXSPI_HAS_SHARED_IRQ0_IRQ1
void FLEXSPI0_FLEXSPI1_DriverIRQHandler(void);
void FLEXSPI0_FLEXSPI1_DriverIRQHandler(void)
{
/* If handle is registered, treat the transfer function is enabled. */
if (NULL != s_flexspiHandle[0])
{
s_flexspiIsr(FLEXSPI0, s_flexspiHandle[0]);
}
if (NULL != s_flexspiHandle[1])
{
s_flexspiIsr(FLEXSPI1, s_flexspiHandle[1]);
}
}
#endif
#endif
View Git Blame Copy Permalink