src/main/msc/at32_msc_diskio.c

   1 /*
   2  * At32 MSC scsi interface
   3  * FLASH emfat reads and writes are implemented
   4  * Other storage read and write services, such as sd, are not supported
   5  *
   6  *
   7  *
   8  */
   9
  10
  11 #include <stdbool.h>
  12
  13 #include "at32_msc_diskio.h"
  14 #include "platform.h"
  15
  16 #include "common/utils.h"
  17 #include "msc_bot_scsi.h"
  18 #include "drivers/usb_msc.h"
  19
  20
  21
  22 #define STORAGE_LUN_NBR 1
  23 #define SCSI_BLOCK_SIZE 512
  24
  25 static const uint8_t scsi_inquiry[MSC_SUPPORT_MAX_LUN][SCSI_INQUIRY_DATA_LENGTH] =
  26 {
  27   /* lun = 0 */
  28   {
  29     0x00,         /* peripheral device type (direct-access device) */
  30     0x80,         /* removable media bit */
  31     0x00,         /* ansi version, ecma version, iso version */
  32     0x01,         /* respond data format */
  33     SCSI_INQUIRY_DATA_LENGTH - 5, /* additional length */
  34     0x00, 0x00, 0x00, /* reserved */
  35         'I', 'N', 'A', 'V', ' ', 'F', 'C', ' ', // Manufacturer : 8 bytes
  36         'O', 'n', 'b', 'o', 'a', 'r', 'd', ' ', // Product      : 16 Bytes
  37         'F', 'l', 'a', 's', 'h', ' ', ' ', ' ', //
  38         ' ', ' ', ' ' ,' ',                     // Version      : 4 Bytes
  39   }
  40 };
  41
  42 usb_sts_type msc_disk_capacity(uint8_t lun, uint32_t *block_num, uint32_t *block_size)
  43 {
  44     UNUSED(lun);
  45     *block_size = SCSI_BLOCK_SIZE;
  46     *block_num = emfat.disk_sectors;
  47     return USB_OK;
  48 }
  49
  50 /*
  51
  52  if( ((USBD_StorageTypeDef *)pdev->pUserData)->Read(lun ,
  53                               hmsc->bot_data,
  54                               hmsc->scsi_blk_addr / hmsc->scsi_blk_size,
  55                               len / hmsc->scsi_blk_size) < 0)
  56
  57 static int8_t STORAGE_Read(
  58     uint8_t lun,        // logical unit number
  59     uint8_t *buf,       // Pointer to the buffer to save data
  60     uint32_t blk_addr,  // address of 1st block to be read
  61     uint16_t blk_len)   // nmber of blocks to be read
  62 {
  63     UNUSED(lun);
  64     mscSetActive();
  65     emfat_read(&emfat, buf, blk_addr, blk_len);
  66     return 0;
  67 }
  68
  69 */
  70 usb_sts_type msc_disk_read(
  71     uint8_t lun,        // logical unit number
  72     uint32_t blk_addr,  // address of 1st block to be read
  73     uint8_t *buf,       // Pointer to the buffer to save data
  74     uint32_t blk_len)   // nmber of blocks to be read
  75 {
  76     UNUSED(lun);
  77     //mscSetActive();
  78     emfat_read(&emfat, buf, blk_addr/SCSI_BLOCK_SIZE , blk_len/SCSI_BLOCK_SIZE);
  79     return USB_OK;
  80 }
  81
  82 usb_sts_type msc_disk_write(uint8_t lun,
  83     uint32_t blk_addr,
  84     uint8_t *buf,
  85     uint32_t blk_len)
  86 {
  87     UNUSED(lun);
  88     UNUSED(buf);
  89     UNUSED(blk_addr);
  90     UNUSED(blk_len);
  91
  92     return USB_FAIL;
  93 }
  94
  95
  96 /**
  97   * @brief  get disk inquiry
  98   * @param  lun: logical units number
  99   * @retval inquiry string
 100   */
 101 uint8_t * get_inquiry(uint8_t lun)
 102 {
 103   if(lun < MSC_SUPPORT_MAX_LUN)
 104     return (uint8_t *)scsi_inquiry[lun];
 105   else
 106     return NULL;
 107 }