From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759105Ab2EPG1k (ORCPT ); Wed, 16 May 2012 02:27:40 -0400 Received: from e23smtp07.au.ibm.com ([202.81.31.140]:57154 "EHLO e23smtp07.au.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757824Ab2EPG1h (ORCPT ); Wed, 16 May 2012 02:27:37 -0400 Message-ID: <1337146409.18429.11.camel@mengcong> Subject: [PATCH] target: Handle ATA_PASS_THROUGH_16 passthrough From: mengcong Reply-To: mc@linux.vnet.ibm.com To: target-devel@vger.kernel.org Cc: "Nicholas A. Bellinger" , linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org, Stefan Hajnoczi , meng cong Date: Wed, 16 May 2012 13:33:29 +0800 Organization: LTC, IBM Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.2.2- Content-Transfer-Encoding: 7bit Mime-Version: 1.0 x-cbid: 12051519-0260-0000-0000-000001213C47 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The cdrecord uses ATA_PASS_THROUGH_16 command while burning CDs with a SATA CD-ROM. This patch adds support to it so that PSCSI CD-ROM passthrough works with the cdrecord. Signed-off-by: Cong Meng --- drivers/target/target_core_transport.c | 30 ++++++++++++++++++++++++++++++ include/scsi/scsi.h | 1 + 2 files changed, 31 insertions(+), 0 deletions(-) diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c index 2d75c29..41439b3 100644 --- a/drivers/target/target_core_transport.c +++ b/drivers/target/target_core_transport.c @@ -2926,6 +2926,36 @@ static int transport_generic_cmd_sequencer( size = (cdb[7] << 8) | cdb[8]; cmd->se_cmd_flags |= SCF_SCSI_CONTROL_SG_IO_CDB; break; + case ATA_PASS_THROUGH_16: + // T_LENGTH + switch (cdb[2] & 0x3) { + case 0x0: + sectors = 0; + break; + case 0x1: + sectors = (((cdb[1] & 0x1) ? cdb[3] : 0) << 8) | cdb[4]; + break; + case 0x2: + sectors = (((cdb[1] & 0x1) ? cdb[5] : 0) << 8) | cdb[6]; + break; + case 0x3: + pr_err("T_LENGTH=0x3 not supported\n"); + goto out_invalid_cdb_field; + break; + } + + // BYTE_BLOCK + if (cdb[2] & 0x4) { + // BLOCK + // T_TYPE: 512 or sector + size = sectors * ((cdb[2] & 0x10) ? + dev->se_sub_dev->se_dev_attrib.block_size : 512); + } else { + // BYTE + size = sectors; + } + cmd->se_cmd_flags |= SCF_SCSI_CONTROL_SG_IO_CDB; + break; default: pr_warn("TARGET_CORE[%s]: Unsupported SCSI Opcode" " 0x%02x, sending CHECK_CONDITION.\n", diff --git a/include/scsi/scsi.h b/include/scsi/scsi.h index f34a5a8..f6dcd25 100644 --- a/include/scsi/scsi.h +++ b/include/scsi/scsi.h @@ -116,6 +116,7 @@ struct scsi_cmnd; #define PERSISTENT_RESERVE_IN 0x5e #define PERSISTENT_RESERVE_OUT 0x5f #define VARIABLE_LENGTH_CMD 0x7f +#define ATA_PASS_THROUGH_16 0x85 #define REPORT_LUNS 0xa0 #define SECURITY_PROTOCOL_IN 0xa2 #define MAINTENANCE_IN 0xa3 -- 1.7.7