diff options
Diffstat (limited to 'drivers/scsi/megaraid/megaraid_sas_fusion.c')
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_sas_fusion.c | 41 |
1 files changed, 40 insertions, 1 deletions
diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.c b/drivers/scsi/megaraid/megaraid_sas_fusion.c index de43795ca90f..f13e7abd345a 100644 --- a/drivers/scsi/megaraid/megaraid_sas_fusion.c +++ b/drivers/scsi/megaraid/megaraid_sas_fusion.c @@ -1137,7 +1137,7 @@ megasas_set_pd_lba(struct MPI2_RAID_SCSI_IO_REQUEST *io_request, u8 cdb_len, u64 start_blk = io_info->pdBlock; u8 *cdb = io_request->CDB.CDB32; u32 num_blocks = io_info->numBlocks; - u8 opcode, flagvals, groupnum, control; + u8 opcode = 0, flagvals = 0, groupnum = 0, control = 0; /* Check if T10 PI (DIF) is enabled for this LD */ ld = MR_TargetIdToLdGet(io_info->ldTgtId, local_map_ptr); @@ -1219,7 +1219,46 @@ megasas_set_pd_lba(struct MPI2_RAID_SCSI_IO_REQUEST *io_request, u8 cdb_len, cdb[8] = (u8)(num_blocks & 0xff); cdb[7] = (u8)((num_blocks >> 8) & 0xff); + io_request->IoFlags = 10; /* Specify 10-byte cdb */ cdb_len = 10; + } else if ((cdb_len < 16) && (start_blk > 0xffffffff)) { + /* Convert to 16 byte CDB for large LBA's */ + switch (cdb_len) { + case 6: + opcode = cdb[0] == READ_6 ? READ_16 : WRITE_16; + control = cdb[5]; + break; + case 10: + opcode = + cdb[0] == READ_10 ? READ_16 : WRITE_16; + flagvals = cdb[1]; + groupnum = cdb[6]; + control = cdb[9]; + break; + case 12: + opcode = + cdb[0] == READ_12 ? READ_16 : WRITE_16; + flagvals = cdb[1]; + groupnum = cdb[10]; + control = cdb[11]; + break; + } + + memset(cdb, 0, sizeof(io_request->CDB.CDB32)); + + cdb[0] = opcode; + cdb[1] = flagvals; + cdb[14] = groupnum; + cdb[15] = control; + + /* Transfer length */ + cdb[13] = (u8)(num_blocks & 0xff); + cdb[12] = (u8)((num_blocks >> 8) & 0xff); + cdb[11] = (u8)((num_blocks >> 16) & 0xff); + cdb[10] = (u8)((num_blocks >> 24) & 0xff); + + io_request->IoFlags = 16; /* Specify 16-byte cdb */ + cdb_len = 16; } /* Normal case, just load LBA here */ |
