diff options
Diffstat (limited to 'c/src/lib/libbsp/arm/atsam/libraries/libchip/source/qspi.c')
| -rw-r--r-- | c/src/lib/libbsp/arm/atsam/libraries/libchip/source/qspi.c | 39 |
1 files changed, 34 insertions, 5 deletions
diff --git a/c/src/lib/libbsp/arm/atsam/libraries/libchip/source/qspi.c b/c/src/lib/libbsp/arm/atsam/libraries/libchip/source/qspi.c index e279ff9da5..367789f4d2 100644 --- a/c/src/lib/libbsp/arm/atsam/libraries/libchip/source/qspi.c +++ b/c/src/lib/libbsp/arm/atsam/libraries/libchip/source/qspi.c @@ -211,6 +211,35 @@ __STATIC_INLINE void QSPI_ScrambleData(Qspi *pQspi, uint32_t wKey, pQspi->QSPI_SMR = (EnableFlag | (Random << 1)); } +static void do_copy(uint8_t *dst, const uint8_t *src, size_t n, bool aligned) +{ + if (aligned) { + while (n > 3) { + *(uint32_t *)dst = *(uint32_t *)src; + dst += 4; + src += 4; + n -= 4; + } + } + + while (n > 0) { + *dst = *src; + ++dst; + ++src; + --n; + } +} + +static void copy_to_io(void *dst, const void *src, size_t n) +{ + do_copy(dst, src, n, ((uintptr_t)dst) % 4 == 0); +} + +static void copy_from_io(void *dst, const void *src, size_t n) +{ + do_copy(dst, src, n, ((uintptr_t)src) % 4 == 0); +} + /*---------------------------------------------------------------------------- * Exported functions *----------------------------------------------------------------------------*/ @@ -721,11 +750,11 @@ QspidStatus_t QSPI_ReadWriteMem(Qspid_t *pQspid, Access_t const ReadWrite) assert(((ReadWrite > CmdAccess) && (ReadWrite <= WriteAccess)) ? true : false); - if (ReadWrite == WriteAccess) - memcpy(pQspiMem, pBuffer.pDataTx , pBuffer.TxDataSize); - else - memcpy(pBuffer.pDataRx, pQspiMem, pBuffer.RxDataSize); - + if (ReadWrite == WriteAccess) { + copy_to_io(pQspiMem, pBuffer.pDataTx , pBuffer.TxDataSize); + } else { + copy_from_io(pBuffer.pDataRx, pQspiMem, pBuffer.RxDataSize); + } memory_sync(); QSPI_EndTransfer(pQspid->pQspiHw); |