circuitpython/ports/zephyr/zephyr_storage.c

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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2019 NXP
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "modzephyr.h"
#include "py/runtime.h"
#if MICROPY_VFS
#include "extmod/vfs.h"
#endif
#ifdef CONFIG_DISK_ACCESS
#include <disk/disk_access.h>
#endif
#ifdef CONFIG_DISK_ACCESS
typedef struct _zephyr_disk_access_obj_t {
mp_obj_base_t base;
const char *pdrv;
int block_size;
int block_count;
} zephyr_disk_access_obj_t;
STATIC void zephyr_disk_access_print(const mp_print_t *print, mp_obj_t self_in, mp_print_kind_t kind) {
zephyr_disk_access_obj_t *self = self_in;
mp_printf(print, "DiskAccess(%s)", self->pdrv);
}
STATIC mp_obj_t zephyr_disk_access_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw, const mp_obj_t *args) {
mp_arg_check_num(n_args, n_kw, 1, 1, false);
zephyr_disk_access_obj_t *self = m_new_obj(zephyr_disk_access_obj_t);
self->base.type = type;
self->pdrv = mp_obj_str_get_str(args[0]);
if (disk_access_init(self->pdrv) != 0) {
mp_raise_ValueError("disk not found");
}
if (disk_access_ioctl(self->pdrv, DISK_IOCTL_GET_SECTOR_SIZE, &self->block_size)) {
mp_raise_ValueError("unable to get sector size");
}
if (disk_access_ioctl(self->pdrv, DISK_IOCTL_GET_SECTOR_COUNT, &self->block_count)) {
mp_raise_ValueError("unable to get block count");
}
return MP_OBJ_FROM_PTR(self);
}
STATIC mp_obj_t zephyr_disk_access_readblocks(mp_obj_t self_in, mp_obj_t block_num, mp_obj_t buf) {
zephyr_disk_access_obj_t *self = self_in;
mp_buffer_info_t bufinfo;
int ret;
mp_get_buffer_raise(buf, &bufinfo, MP_BUFFER_WRITE);
ret = disk_access_read(self->pdrv, bufinfo.buf, mp_obj_get_int(block_num), bufinfo.len / self->block_size);
return MP_OBJ_NEW_SMALL_INT(ret);
}
STATIC MP_DEFINE_CONST_FUN_OBJ_3(zephyr_disk_access_readblocks_obj, zephyr_disk_access_readblocks);
STATIC mp_obj_t zephyr_disk_access_writeblocks(mp_obj_t self_in, mp_obj_t block_num, mp_obj_t buf) {
zephyr_disk_access_obj_t *self = self_in;
mp_buffer_info_t bufinfo;
int ret;
mp_get_buffer_raise(buf, &bufinfo, MP_BUFFER_READ);
ret = disk_access_write(self->pdrv, bufinfo.buf, mp_obj_get_int(block_num), bufinfo.len / self->block_size);
return MP_OBJ_NEW_SMALL_INT(ret);
}
STATIC MP_DEFINE_CONST_FUN_OBJ_3(zephyr_disk_access_writeblocks_obj, zephyr_disk_access_writeblocks);
STATIC mp_obj_t zephyr_disk_access_ioctl(mp_obj_t self_in, mp_obj_t cmd_in, mp_obj_t arg_in) {
zephyr_disk_access_obj_t *self = self_in;
mp_int_t cmd = mp_obj_get_int(cmd_in);
int buf;
int ret;
switch (cmd) {
case MP_BLOCKDEV_IOCTL_INIT:
case MP_BLOCKDEV_IOCTL_DEINIT:
return MP_OBJ_NEW_SMALL_INT(0);
case MP_BLOCKDEV_IOCTL_SYNC:
ret = disk_access_ioctl(self->pdrv, DISK_IOCTL_CTRL_SYNC, &buf);
return MP_OBJ_NEW_SMALL_INT(ret);
case MP_BLOCKDEV_IOCTL_BLOCK_COUNT:
return MP_OBJ_NEW_SMALL_INT(self->block_count);
case MP_BLOCKDEV_IOCTL_BLOCK_SIZE:
return MP_OBJ_NEW_SMALL_INT(self->block_size);
default:
return MP_OBJ_NEW_SMALL_INT(-1);
}
}
STATIC MP_DEFINE_CONST_FUN_OBJ_3(zephyr_disk_access_ioctl_obj, zephyr_disk_access_ioctl);
STATIC const mp_rom_map_elem_t zephyr_disk_access_locals_dict_table[] = {
{ MP_ROM_QSTR(MP_QSTR_readblocks), MP_ROM_PTR(&zephyr_disk_access_readblocks_obj) },
{ MP_ROM_QSTR(MP_QSTR_writeblocks), MP_ROM_PTR(&zephyr_disk_access_writeblocks_obj) },
{ MP_ROM_QSTR(MP_QSTR_ioctl), MP_ROM_PTR(&zephyr_disk_access_ioctl_obj) },
};
STATIC MP_DEFINE_CONST_DICT(zephyr_disk_access_locals_dict, zephyr_disk_access_locals_dict_table);
const mp_obj_type_t zephyr_disk_access_type = {
{ &mp_type_type },
.name = MP_QSTR_DiskAccess,
.print = zephyr_disk_access_print,
.make_new = zephyr_disk_access_make_new,
.locals_dict = (mp_obj_dict_t*)&zephyr_disk_access_locals_dict,
};
#endif // CONFIG_DISK_ACCESS