Raphael CoefficandGitHub
26b34a4820
`g_FATFS_Obj` is located in `__DMA` section, which is not initialised, so that testing `sdMounted()` at boot relies on the fact that the bootloader linker script declares BSS in internal SRAM and not in CCM, as the firmware linker script does.
409 lines
11 KiB
C++
409 lines
11 KiB
C++
/*
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* Copyright (C) EdgeTX
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*
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* Based on code named
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* opentx - https://github.com/opentx/opentx
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* th9x - http://code.google.com/p/th9x
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* er9x - http://code.google.com/p/er9x
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* gruvin9x - http://code.google.com/p/gruvin9x
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*
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* License GPLv2: http://www.gnu.org/licenses/gpl-2.0.html
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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/* Low level disk I/O module skeleton for FatFs (C)ChaN, 2007 */
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/*-----------------------------------------------------------------------*/
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/* This is a stub disk I/O module that acts as front end of the existing */
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/* disk I/O modules and attach it to FatFs module with common interface. */
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/*-----------------------------------------------------------------------*/
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#include "diskio.h"
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#include "debug.h"
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#include "targets/common/arm/stm32/sdio_sd.h"
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#include <string.h>
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/*-----------------------------------------------------------------------*/
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/* Lock / unlock functions */
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/*-----------------------------------------------------------------------*/
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#if !defined(BOOT)
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static RTOS_MUTEX_HANDLE ioMutex;
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uint32_t ioMutexReq = 0, ioMutexRel = 0;
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int ff_cre_syncobj (BYTE vol, FF_SYNC_t * mutex)
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{
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*mutex = ioMutex;
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return 1;
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}
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int ff_req_grant (FF_SYNC_t mutex)
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{
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ioMutexReq += 1;
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RTOS_LOCK_MUTEX(mutex);
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return 1;
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}
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void ff_rel_grant (FF_SYNC_t mutex)
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{
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ioMutexRel += 1;
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RTOS_UNLOCK_MUTEX(mutex);
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}
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int ff_del_syncobj (FF_SYNC_t mutex)
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{
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return 1;
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}
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#endif
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/*-----------------------------------------------------------------------*/
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/* Inidialize a Drive */
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DSTATUS disk_initialize (
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BYTE drv /* Physical drive nmuber (0..) */
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)
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{
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DSTATUS stat = 0;
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/* Supports only single drive */
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if (drv)
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{
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stat |= STA_NOINIT;
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}
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/*-------------------------- SD Init ----------------------------- */
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SD_Error res = SD_Init();
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if (res != SD_OK)
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{
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TRACE("SD_Init() failed: %d", res);
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stat |= STA_NOINIT;
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}
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TRACE("SD card info:");
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TRACE("sectors: %u", (uint32_t)(SDCardInfo.CardCapacity / 512));
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TRACE("type: %u", (uint32_t)(SDCardInfo.CardType));
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TRACE("EraseGrSize: %u", (uint32_t)(SDCardInfo.SD_csd.EraseGrSize));
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TRACE("EraseGrMul: %u", (uint32_t)(SDCardInfo.SD_csd.EraseGrMul));
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TRACE("ManufacturerID: %u", (uint32_t)(SDCardInfo.SD_cid.ManufacturerID));
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return(stat);
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}
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DWORD scratch[BLOCK_SIZE / 4] __DMA;
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/*-----------------------------------------------------------------------*/
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/* Return Disk Status */
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DSTATUS disk_status (
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BYTE drv /* Physical drive nmuber (0..) */
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)
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{
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DSTATUS stat = 0;
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if (SD_Detect() != SD_PRESENT)
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stat |= STA_NODISK;
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// STA_NOTINIT - Subsystem not initailized
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// STA_PROTECTED - Write protected, MMC/SD switch if available
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return(stat);
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}
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uint32_t sdReadRetries = 0;
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/*-----------------------------------------------------------------------*/
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/* Read Sector(s) */
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DRESULT disk_read_dma(BYTE drv, BYTE * buff, DWORD sector, UINT count)
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{
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// this functions assumes that buff is properly aligned and in the right RAM segment for DMA
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DRESULT res;
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SD_Error Status;
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SDTransferState State;
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for (int retry=0; retry<3; retry++) {
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res = RES_OK;
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if (count == 1) {
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Status = SD_ReadBlock(buff, sector, BLOCK_SIZE); // 4GB Compliant
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}
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else {
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Status = SD_ReadMultiBlocks(buff, sector, BLOCK_SIZE, count); // 4GB Compliant
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}
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if (Status == SD_OK) {
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Status = SD_WaitReadOperation(200*count); // Check if the Transfer is finished
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while ((State = SD_GetStatus()) == SD_TRANSFER_BUSY); // BUSY, OK (DONE), ERROR (FAIL)
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if (State == SD_TRANSFER_ERROR) {
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TRACE("State=SD_TRANSFER_ERROR, c: %u", sector, (uint32_t)count);
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res = RES_ERROR;
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}
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else if (Status != SD_OK) {
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TRACE("Status(WaitRead)=%d, s:%u c: %u", Status, sector, (uint32_t)count);
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res = RES_ERROR;
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}
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}
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else {
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TRACE("Status(ReadBlock)=%d, s:%u c: %u", Status, sector, (uint32_t)count);
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res = RES_ERROR;
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}
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if (res == RES_OK) break;
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sdReadRetries += 1;
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}
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return res;
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}
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DRESULT __disk_read(BYTE drv, BYTE * buff, DWORD sector, UINT count)
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{
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// If unaligned, do the single block reads with a scratch buffer.
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// If aligned and single sector, do a single block read.
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// If aligned and multiple sectors, try multi block read.
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// If multi block read fails, try single block reads without
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// an intermediate buffer (move trough the provided buffer)
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// TRACE("disk_read %d %p %10d %d", drv, buff, sector, count);
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if (SD_Detect() != SD_PRESENT) {
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TRACE("SD_Detect() != SD_PRESENT");
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return RES_NOTRDY;
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}
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DRESULT res = RES_OK;
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if (count == 0) return res;
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if ((DWORD)buff < 0x20000000 || ((DWORD)buff & 3)) {
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// buffer is not aligned, use scratch buffer that is aligned
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TRACE("disk_read bad alignment (%p)", buff);
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while (count--) {
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res = disk_read_dma(drv, (BYTE *)scratch, sector++, 1);
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if (res != RES_OK) break;
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memcpy(buff, scratch, BLOCK_SIZE);
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buff += BLOCK_SIZE;
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}
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return res;
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}
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res = disk_read_dma(drv, buff, sector, count);
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if (res != RES_OK && count > 1) {
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// multi-read failed, try reading same sectors, one by one
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TRACE("disk_read() multi-block failed, trying single block reads...");
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while (count--) {
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res = disk_read_dma(drv, buff, sector++, 1);
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if (res != RES_OK) break;
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buff += BLOCK_SIZE;
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}
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}
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return res;
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}
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/*-----------------------------------------------------------------------*/
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/* Write Sector(s) */
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#if _READONLY == 0
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DRESULT __disk_write(
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BYTE drv, /* Physical drive nmuber (0..) */
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const BYTE *buff, /* Data to be written */
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DWORD sector, /* Sector address (LBA) */
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UINT count /* Number of sectors to write (1..255) */
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)
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{
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SD_Error Status;
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DRESULT res = RES_OK;
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// TRACE("disk_write %d %p %10d %d", drv, buff, sector, count);
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if (SD_Detect() != SD_PRESENT)
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return(RES_NOTRDY);
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if ((DWORD)buff < 0x20000000 || ((DWORD)buff & 3)) {
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TRACE("disk_write bad alignment (%p)", buff);
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while(count--) {
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memcpy(scratch, buff, BLOCK_SIZE);
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res = __disk_write(drv, (BYTE *)scratch, sector++, 1);
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if (res != RES_OK)
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break;
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buff += BLOCK_SIZE;
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}
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return(res);
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}
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if (count == 1) {
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Status = SD_WriteBlock((uint8_t *)buff, sector, BLOCK_SIZE); // 4GB Compliant
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}
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else {
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Status = SD_WriteMultiBlocks((uint8_t *)buff, sector, BLOCK_SIZE, count); // 4GB Compliant
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}
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if (Status == SD_OK) {
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SDTransferState State;
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Status = SD_WaitWriteOperation(500*count); // Check if the Transfer is finished
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while((State = SD_GetStatus()) == SD_TRANSFER_BUSY); // BUSY, OK (DONE), ERROR (FAIL)
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if ((State == SD_TRANSFER_ERROR) || (Status != SD_OK)) {
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TRACE("__disk_write() err, st:%d,%d, s:%u c: %u", Status, State, sector, (uint32_t)count);
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res = RES_ERROR;
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}
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}
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else {
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res = RES_ERROR;
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}
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// TRACE("result=%d", res);
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return res;
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}
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#endif /* _READONLY */
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/*-----------------------------------------------------------------------*/
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/* Miscellaneous Functions */
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DRESULT disk_ioctl (
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BYTE drv, /* Physical drive nmuber (0..) */
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BYTE ctrl, /* Control code */
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void *buff /* Buffer to send/receive control data */
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)
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{
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DRESULT res;
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if (drv) return RES_PARERR;
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res = RES_ERROR;
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switch (ctrl) {
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case GET_SECTOR_COUNT : /* Get number of sectors on the disk (DWORD) */
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// use 512 for sector size, SDCardInfo.CardBlockSize is not sector size and can be 1024 for 2G SD cards!!!!
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*(DWORD*)buff = SDCardInfo.CardCapacity / BLOCK_SIZE;
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res = RES_OK;
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break;
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case GET_SECTOR_SIZE : /* Get R/W sector size (WORD) */
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*(WORD*)buff = BLOCK_SIZE; // force sector size. SDCardInfo.CardBlockSize is not sector size and can be 1024 for 2G SD cards!!!!
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res = RES_OK;
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break;
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case GET_BLOCK_SIZE : /* Get erase block size in unit of sector (DWORD) */
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// TODO verify that this is the correct value
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*(DWORD*)buff = (uint32_t)SDCardInfo.SD_csd.EraseGrSize * (uint32_t)SDCardInfo.SD_csd.EraseGrMul;
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res = RES_OK;
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break;
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case CTRL_SYNC:
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while (SD_GetStatus() == SD_TRANSFER_BUSY); /* Complete pending write process (needed at _FS_READONLY == 0) */
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res = RES_OK;
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break;
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default:
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res = RES_OK;
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break;
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}
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return res;
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}
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// TODO everything here should not be in the driver layer ...
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bool _g_FATFS_init = false;
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FATFS g_FATFS_Obj __DMA; // this is in uninitialised section !!!
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#if defined(LOG_TELEMETRY)
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FIL g_telemetryFile = {};
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#endif
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#if defined(LOG_BLUETOOTH)
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FIL g_bluetoothFile = {};
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#endif
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#if defined(BOOT)
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void sdInit(void)
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{
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if (f_mount(&g_FATFS_Obj, "", 1) == FR_OK) {
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f_chdir("/");
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}
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}
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#else
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#include "audio.h"
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#include "sdcard.h"
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#include "disk_cache.h"
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void sdInit()
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{
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TRACE("sdInit");
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RTOS_CREATE_MUTEX(ioMutex);
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sdMount();
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}
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void sdMount()
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{
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TRACE("sdMount");
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diskCache.clear();
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if (f_mount(&g_FATFS_Obj, "", 1) == FR_OK) {
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// call sdGetFreeSectors() now because f_getfree() takes a long time first time it's called
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_g_FATFS_init = true;
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sdGetFreeSectors();
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#if defined(LOG_TELEMETRY)
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f_open(&g_telemetryFile, LOGS_PATH "/telemetry.log", FA_OPEN_ALWAYS | FA_WRITE);
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if (f_size(&g_telemetryFile) > 0) {
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f_lseek(&g_telemetryFile, f_size(&g_telemetryFile)); // append
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}
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#endif
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#if defined(LOG_BLUETOOTH)
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f_open(&g_bluetoothFile, LOGS_PATH "/bluetooth.log", FA_OPEN_ALWAYS | FA_WRITE);
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if (f_size(&g_bluetoothFile) > 0) {
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f_lseek(&g_bluetoothFile, f_size(&g_bluetoothFile)); // append
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}
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#endif
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}
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else {
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TRACE("f_mount() failed");
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}
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}
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void sdDone()
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{
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TRACE("sdDone");
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if (sdMounted()) {
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audioQueue.stopSD();
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#if defined(LOG_TELEMETRY)
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f_close(&g_telemetryFile);
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#endif
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#if defined(LOG_BLUETOOTH)
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f_close(&g_bluetoothFile);
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#endif
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f_mount(nullptr, "", 0); // unmount SD
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}
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}
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#endif
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uint32_t sdMounted()
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{
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return _g_FATFS_init && (g_FATFS_Obj.fs_type != 0);
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}
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uint32_t sdIsHC()
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{
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return true; // TODO (CardType & CT_BLOCK);
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}
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uint32_t sdGetSpeed()
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{
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return 330000;
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}
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