Add SDIO driver.

Took the work done as part of PR
ARMmbed/mbed-os#8634

Signed-off-by: Mahesh Mahadevan <[email protected]>

Author: mmahadevan108

SDIOBlockDevice.cpp

@@ -0,0 +1,296 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2017 ARM Limited
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "SDIOBlockDevice.h"
+#include "platform/mbed_debug.h"
+#include "target/sdio_device.h"
+
+using namespace mbed;
+
+/*
+ *  defines
+ */
+
+#define SD_DBG 0       /*!< 1 - Enable debugging */
+#define SD_CMD_TRACE 0 /*!< 1 - Enable SD command tracing */
+
+#define SD_BLOCK_DEVICE_ERROR_WOULD_BLOCK -5001           /*!< operation would block */
+#define SD_BLOCK_DEVICE_ERROR_UNSUPPORTED -5002           /*!< unsupported operation */
+#define SD_BLOCK_DEVICE_ERROR_PARAMETER -5003             /*!< invalid parameter */
+#define SD_BLOCK_DEVICE_ERROR_NO_INIT -5004               /*!< uninitialized */
+#define SD_BLOCK_DEVICE_ERROR_NO_DEVICE -5005             /*!< device is missing or not connected */
+#define SD_BLOCK_DEVICE_ERROR_WRITE_PROTECTED -5006       /*!< write protected */
+#define SD_BLOCK_DEVICE_ERROR_UNUSABLE -5007              /*!< unusable card */
+#define SD_BLOCK_DEVICE_ERROR_NO_RESPONSE -5008           /*!< No response from device */
+#define SD_BLOCK_DEVICE_ERROR_CRC -5009                   /*!< CRC error */
+#define SD_BLOCK_DEVICE_ERROR_ERASE -5010                 /*!< Erase error: reset/sequence */
+#define SD_BLOCK_DEVICE_ERROR_WRITE -5011                 /*!< SPI Write error: !SPI_DATA_ACCEPTED */
+#define SD_BLOCK_DEVICE_ERROR_UNSUPPORTED_BLOCKSIZE -5012 /*!< unsupported blocksize, only 512 byte supported */
+#define SD_BLOCK_DEVICE_ERROR_READBLOCKS -5013            /*!< read data blocks from SD failed */
+#define SD_BLOCK_DEVICE_ERROR_WRITEBLOCKS -5014           /*!< write data blocks to SD failed */
+#define SD_BLOCK_DEVICE_ERROR_ERASEBLOCKS -5015           /*!< erase data blocks to SD failed */
+
+#define BLOCK_SIZE_HC 512 /*!< Block size supported for SD card is 512 bytes  */
+
+// Types
+#define SDCARD_NONE 0  /**< No card is present */
+#define SDCARD_V1 1    /**< v1.x Standard Capacity */
+#define SDCARD_V2 2    /**< v2.x Standard capacity SD card */
+#define SDCARD_V2HC 3  /**< v2.x High capacity SD card */
+#define CARD_UNKNOWN 4 /**< Unknown or unsupported card */
+
+#ifndef MBED_CONF_SD_TIMEOUT
+#define MBED_CONF_SD_TIMEOUT (30 * 1000) /* ms */
+#endif
+
+SDIOBlockDevice::SDIOBlockDevice(PinName cardDetect) : _cardDetect(cardDetect),
+                                                       _is_initialized(0),
+                                                       _sectors(0),
+                                                       _init_ref_count(0)
+{
+    // Only HC block size is supported.
+    _block_size = BLOCK_SIZE_HC;
+    _erase_size = BLOCK_SIZE_HC;
+}
+
+SDIOBlockDevice::~SDIOBlockDevice()
+{
+    if (_is_initialized) {
+        deinit();
+    }
+}
+
+int SDIOBlockDevice::init()
+{
+    debug_if(SD_DBG, "init Card...\r\n");
+
+    lock();
+
+    if (!_is_initialized) {
+        _init_ref_count = 0;
+    }
+
+    _init_ref_count++;
+
+    if (_init_ref_count != 1) {
+        unlock();
+        return BD_ERROR_OK;
+    }
+
+    if (isPresent() == false) {
+        unlock();
+        return SD_BLOCK_DEVICE_ERROR_NO_DEVICE;
+    }
+
+    int status = SDIO_Init();
+    if (BD_ERROR_OK != status) {
+        unlock();
+        return BD_ERROR_DEVICE_ERROR;
+    }
+
+    _is_initialized = true;
+
+    // get sectors count from cardinfo
+    _sectors = SDIO_GetBlockCount();
+    if (BLOCK_SIZE_HC != SDIO_GetBlockSize()) {
+        unlock();
+        return SD_BLOCK_DEVICE_ERROR_UNSUPPORTED_BLOCKSIZE;
+    }
+
+    unlock();
+
+    return status;
+}
+
+int SDIOBlockDevice::deinit()
+{
+    debug_if(SD_DBG, "deinit Card...\r\n");
+    lock();
+
+    if (!_is_initialized) {
+        _init_ref_count = 0;
+        unlock();
+        return BD_ERROR_OK;
+    }
+
+    _init_ref_count--;
+
+    if (_init_ref_count) {
+        unlock();
+        return BD_ERROR_OK;
+    }
+
+    int status = SDIO_DeInit();
+    _is_initialized = false;
+
+    _sectors = 0;
+
+    unlock();
+    return status;
+}
+
+int SDIOBlockDevice::read(void *b, bd_addr_t addr, bd_size_t size)
+{
+    //debug_if(SD_DBG, "read Card...\r\n");
+    lock();
+    if (isPresent() == false) {
+        unlock();
+        return SD_BLOCK_DEVICE_ERROR_NO_DEVICE;
+    }
+    if (!is_valid_read(addr, size)) {
+        unlock();
+        return SD_BLOCK_DEVICE_ERROR_PARAMETER;
+    }
+
+    if (!_is_initialized)
+    {
+        unlock();
+        return SD_BLOCK_DEVICE_ERROR_NO_INIT;
+    }
+
+    uint32_t *buffer = static_cast<uint32_t *>(b);
+
+    // ReadBlocks uses byte unit address
+    // SDHC and SDXC Cards different addressing is handled in ReadBlocks()
+    bd_addr_t blockCnt = size / _block_size;
+    addr = addr / _block_size;
+
+    // receive the data : one block/ multiple blocks is handled in ReadBlocks()
+    int status = SDIO_ReadBlocks(buffer, addr, blockCnt);
+    debug_if(SD_DBG, "ReadBlocks dbgtest addr: %lld  blockCnt: %lld \n", addr, blockCnt);
+
+    if (status != MSD_OK) {
+        debug_if(SD_DBG, "ReadBlocks failed! addr: %lld  blockCnt: %lld \n", addr, blockCnt);
+        status = SD_BLOCK_DEVICE_ERROR_READBLOCKS;
+    }
+
+    unlock();
+
+    return status;
+}
+
+int SDIOBlockDevice::program(const void *b, bd_addr_t addr, bd_size_t size)
+{
+    //debug_if(SD_DBG, "program Card...\r\n");
+    lock();
+
+    if (isPresent() == false) {
+        unlock();
+        return SD_BLOCK_DEVICE_ERROR_NO_DEVICE;
+    }
+    if (!is_valid_program(addr, size)) {
+        unlock();
+        return SD_BLOCK_DEVICE_ERROR_PARAMETER;
+    }
+
+    if (!_is_initialized) {
+        unlock();
+        return SD_BLOCK_DEVICE_ERROR_NO_INIT;
+    }
+
+    //uint32_t *buffer = static_cast< uint32_t *>(b);
+    // HAL layer uses uint32_t for addr/size
+    uint32_t *buffer = (uint32_t *)(b);
+
+    // Get block count
+    bd_size_t blockCnt = size / _block_size;
+    addr = addr / _block_size;
+
+    int status = SDIO_WriteBlocks(buffer, addr, blockCnt);
+
+    debug_if(SD_DBG, "WriteBlocks dbgtest addr: %lld  blockCnt: %lld \n", addr, blockCnt);
+
+    if (status != MSD_OK) {
+        debug_if(SD_DBG, "WriteBlocks failed! addr: %lld  blockCnt: %lld \n", addr, blockCnt);
+        status = SD_BLOCK_DEVICE_ERROR_WRITEBLOCKS;
+    }
+
+    unlock();
+
+    return status;
+}
+
+int SDIOBlockDevice::trim(bd_addr_t addr, bd_size_t size)
+{
+    debug_if(SD_DBG, "trim Card...\r\n");
+    lock();
+    if (isPresent() == false) {
+        unlock();
+        return SD_BLOCK_DEVICE_ERROR_NO_DEVICE;
+    }
+    if (!_is_valid_trim(addr, size)) {
+        unlock();
+        return SD_BLOCK_DEVICE_ERROR_PARAMETER;
+    }
+
+    if (!_is_initialized) {
+        unlock();
+        return SD_BLOCK_DEVICE_ERROR_NO_INIT;
+    }
+
+    bd_size_t blockCnt = size / _block_size;
+    addr = addr / _block_size;
+
+    int status = SDIO_Erase(addr, blockCnt);
+    if (status != 0) {
+        debug_if(SD_DBG, "Erase blocks failed! addr: %lld  blockCnt: %lld \n", addr, blockCnt);
+        status = SD_BLOCK_DEVICE_ERROR_ERASEBLOCKS;
+    }
+
+    unlock();
+    return status;
+}
+
+bd_size_t SDIOBlockDevice::get_read_size() const
+{
+    return _block_size;
+}
+
+bd_size_t SDIOBlockDevice::get_program_size() const
+{
+    return _block_size;
+}
+
+bd_size_t SDIOBlockDevice::size() const
+{
+    return _block_size * _sectors;
+}
+
+void SDIOBlockDevice::debug(bool dbg)
+{
+}
+
+bool SDIOBlockDevice::_is_valid_trim(bd_addr_t addr, bd_size_t size)
+{
+    return (
+        addr % _erase_size == 0 &&
+        size % _erase_size == 0 &&
+        addr + size <= this->size());
+}
+
+bool SDIOBlockDevice::isPresent(void)
+{
+    if (_cardDetect.is_connected())
+        return (_cardDetect.read() == 0);
+    else
+        return true;
+}
+
+const char *SDIOBlockDevice::get_type() const
+{
+    return "SDIO";
+}
+