ra8_io_blockdev_sdhi.c

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#include "ra8_io_blockdev_sdhi.h"
 
#include <stdint.h>
 
#include "ra8_attributes.h"
#include "ra8_check.h"
#include "ra8_err.h"
#include "ra8_io_blockdev.h"
#include "ra8_io_blockdev_backend.h"
#include "ra8_sdcard.h"

static const char* const s_tag = "ra8_io_blockdev_sdhi";

typedef enum : uint32_t {
  k_ra8_io_sdhi_erase_unit_blocks = 1, 
} ra8_io_sdhi_const_t;

RA8_INTERNAL
RA8_INTERNAL static ra8_err_t
internal_sdhi_read(void* ctx, uint32_t lba, uint32_t count, uint8_t* buf)
{
  (void)ctx;
  RA8_CHECK_NULL_PTR(buf, s_tag, "buf must not be nullptr");
  return ra8_sdcard_read_blocks(lba, buf, count);
}

RA8_INTERNAL
RA8_INTERNAL static ra8_err_t
internal_sdhi_write(void* ctx, uint32_t lba, uint32_t count, const uint8_t* buf)
{
  (void)ctx;
  RA8_CHECK_NULL_PTR(buf, s_tag, "buf must not be nullptr");
  return ra8_sdcard_write_blocks(lba, buf, count);
}

RA8_INTERNAL
RA8_INTERNAL static ra8_err_t internal_sdhi_get_caps(const void* ctx, ra8_io_blockdev_caps_t* out)
{
  (void)ctx;
  RA8_CHECK_NULL_PTR(out, s_tag, "out must not be nullptr");
  uint32_t        blocks = 0;
  const ra8_err_t cap    = ra8_sdcard_get_capacity(&blocks);
  if (cap != k_ra8_ok) {
    return cap;
  }
  out->block_count             = blocks;
  out->erase_unit_blocks       = (uint32_t)k_ra8_io_sdhi_erase_unit_blocks;
  out->program_size_bytes      = (uint32_t)k_ra8_io_block_size_bytes;
  out->logical_block_bytes     = (uint16_t)k_ra8_io_block_size_bytes;
  out->erase_value             = (uint8_t)k_ra8_io_erase_value_zero;
  out->must_erase_before_write = false;
  out->read_only               = false;
  return k_ra8_ok;
}

static const ra8_io_blockdev_iface_t s_sdhi_iface = {
  .read     = internal_sdhi_read,
  .write    = internal_sdhi_write,
  .erase    = nullptr,
  .get_caps = internal_sdhi_get_caps,
  .sync     = nullptr,
};
 
ra8_err_t ra8_io_blockdev_sdhi_init(ra8_io_blockdev_t* bd)
{
  RA8_CHECK_NULL_PTR(bd, s_tag, "bd must not be nullptr");
  bd->iface = &s_sdhi_iface;
  bd->ctx   = nullptr;
  return k_ra8_ok;
}