feat(fatfs): add FATFS from esp-idf

Commit ID: 3b16089c

components/fatfs/diskio/diskio_wl.c

@@ -0,0 +1,127 @@
+// Copyright 2015-2017 Espressif Systems (Shanghai) PTE LTD
+//
+// 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 <string.h>
+#include "diskio_impl.h"
+#include "ffconf.h"
+#include "ff.h"
+#include "esp_log.h"
+#include "diskio_wl.h"
+#include "wear_levelling.h"
+#include "esp_compiler.h"
+
+static const char* TAG = "ff_diskio_spiflash";
+
+wl_handle_t ff_wl_handles[FF_VOLUMES] = {
+        WL_INVALID_HANDLE,
+        WL_INVALID_HANDLE,
+};
+
+DSTATUS ff_wl_initialize (BYTE pdrv)
+{
+    return 0;
+}
+
+DSTATUS ff_wl_status (BYTE pdrv)
+{
+    return 0;
+}
+
+DRESULT ff_wl_read (BYTE pdrv, BYTE *buff, DWORD sector, UINT count)
+{
+    ESP_LOGV(TAG, "ff_wl_read - pdrv=%i, sector=%i, count=%i\n", (unsigned int)pdrv, (unsigned int)sector, (unsigned int)count);
+    wl_handle_t wl_handle = ff_wl_handles[pdrv];
+    assert(wl_handle + 1);
+    esp_err_t err = wl_read(wl_handle, sector * wl_sector_size(wl_handle), buff, count * wl_sector_size(wl_handle));
+    if (unlikely(err != ESP_OK)) {
+        ESP_LOGE(TAG, "wl_read failed (%d)", err);
+        return RES_ERROR;
+    }
+    return RES_OK;
+}
+
+DRESULT ff_wl_write (BYTE pdrv, const BYTE *buff, DWORD sector, UINT count)
+{
+    ESP_LOGV(TAG, "ff_wl_write - pdrv=%i, sector=%i, count=%i\n", (unsigned int)pdrv, (unsigned int)sector, (unsigned int)count);
+    wl_handle_t wl_handle = ff_wl_handles[pdrv];
+    assert(wl_handle + 1);
+    esp_err_t err = wl_erase_range(wl_handle, sector * wl_sector_size(wl_handle), count * wl_sector_size(wl_handle));
+    if (unlikely(err != ESP_OK)) {
+        ESP_LOGE(TAG, "wl_erase_range failed (%d)", err);
+        return RES_ERROR;
+    }
+    err = wl_write(wl_handle, sector * wl_sector_size(wl_handle), buff, count * wl_sector_size(wl_handle));
+    if (unlikely(err != ESP_OK)) {
+        ESP_LOGE(TAG, "wl_write failed (%d)", err);
+        return RES_ERROR;
+    }
+    return RES_OK;
+}
+
+DRESULT ff_wl_ioctl (BYTE pdrv, BYTE cmd, void *buff)
+{
+    wl_handle_t wl_handle = ff_wl_handles[pdrv];
+    ESP_LOGV(TAG, "ff_wl_ioctl: cmd=%i\n", cmd);
+    assert(wl_handle + 1);
+    switch (cmd) {
+    case CTRL_SYNC:
+        return RES_OK;
+    case GET_SECTOR_COUNT:
+        *((DWORD *) buff) = wl_size(wl_handle) / wl_sector_size(wl_handle);
+        return RES_OK;
+    case GET_SECTOR_SIZE:
+        *((WORD *) buff) = wl_sector_size(wl_handle);
+        return RES_OK;
+    case GET_BLOCK_SIZE:
+        return RES_ERROR;
+    }
+    return RES_ERROR;
+}
+
+
+esp_err_t ff_diskio_register_wl_partition(BYTE pdrv, wl_handle_t flash_handle)
+{
+    if (pdrv >= FF_VOLUMES) {
+        return ESP_ERR_INVALID_ARG;
+    }
+    static const ff_diskio_impl_t wl_impl = {
+        .init = &ff_wl_initialize,
+        .status = &ff_wl_status,
+        .read = &ff_wl_read,
+        .write = &ff_wl_write,
+        .ioctl = &ff_wl_ioctl
+    };
+    ff_wl_handles[pdrv] = flash_handle;
+    ff_diskio_register(pdrv, &wl_impl);
+    return ESP_OK;
+}
+
+BYTE ff_diskio_get_pdrv_wl(wl_handle_t flash_handle)
+{
+    for (int i = 0; i < FF_VOLUMES; i++) {
+        if (flash_handle == ff_wl_handles[i]) {
+            return i;
+        }
+    }
+    return 0xff;
+}
+
+void ff_diskio_clear_pdrv_wl(wl_handle_t flash_handle)
+{
+    for (int i = 0; i < FF_VOLUMES; i++) {
+        if (flash_handle == ff_wl_handles[i]) {
+            ff_wl_handles[i] = WL_INVALID_HANDLE;
+        }
+    }
+}