lunaix-os/includes/hal/ahci/scsi.h

   1 #ifndef __LUNAIX_SCSI_H
   2 #define __LUNAIX_SCSI_H
   3
   4 #include <stdint.h>
   5
   6 #define SCSI_FLIP(val)                                                         \
   7     ((((val)&0x000000ff) << 24) | (((val)&0x0000ff00) << 8) |                  \
   8      (((val)&0x00ff0000) >> 8) | (((val)&0xff000000) >> 24))
   9
  10 #define SCSI_READ_CAPACITY_16 0x9e
  11 #define SCSI_READ_CAPACITY_10 0x25
  12 #define SCSI_READ_BLOCKS_16 0x88
  13 #define SCSI_READ_BLOCKS_12 0xa8
  14 #define SCSI_WRITE_BLOCKS_16 0x8a
  15 #define SCSI_WRITE_BLOCKS_12 0xaa
  16
  17 struct scsi_cdb12
  18 {
  19     uint8_t opcode;
  20     uint8_t misc1;
  21     uint32_t lba_be;
  22     uint32_t length;
  23     uint8_t misc2;
  24     uint8_t ctrl;
  25 } __attribute__((packed));
  26
  27 struct scsi_cdb16
  28 {
  29     uint8_t opcode;
  30     uint8_t misc1;
  31     uint32_t lba_be_hi;
  32     uint32_t lba_be_lo;
  33     uint32_t length;
  34     uint8_t misc2;
  35     uint8_t ctrl;
  36 } __attribute__((packed));
  37
  38 void
  39 scsi_create_packet12(struct scsi_cdb12* cdb,
  40                      uint8_t opcode,
  41                      uint32_t lba,
  42                      uint32_t alloc_size);
  43
  44 void
  45 scsi_create_packet16(struct scsi_cdb16* cdb,
  46                      uint8_t opcode,
  47                      uint64_t lba,
  48                      uint32_t alloc_size);
  49
  50 void
  51 scsi_read_buffer(struct hba_port* port,
  52                  uint64_t lba,
  53                  void* buffer,
  54                  uint32_t size);
  55
  56 void
  57 scsi_write_buffer(struct hba_port* port,
  58                   uint64_t lba,
  59                   void* buffer,
  60                   uint32_t size);
  61
  62 #endif /* __LUNAIX_ATAPI_H */