Commit 6f231dda authored by Dan Williams's avatar Dan Williams
Browse files

isci: Intel(R) C600 Series Chipset Storage Control Unit Driver

Support for the up to 2x4-port 6Gb/s SAS controllers embedded in the
chipset.

This is a snapshot of the first publicly available version of the driver,
commit 4c1db2d0 in the 'historical' branch.

   git://git.kernel.org/pub/scm/linux/kernel/git/djbw/isci.git

 historical
Signed-off-by: default avatarMaciej Trela <maciej.trela@intel.com>
Signed-off-by: default avatarDave Jiang <dave.jiang@intel.com>
Signed-off-by: default avatarEdmund Nadolski <edmund.nadolski@intel.com>
Signed-off-by: default avatarDan Williams <dan.j.williams@intel.com>
parent 59c5f46f
......@@ -830,6 +830,40 @@ config SCSI_GDTH
To compile this driver as a module, choose M here: the
module will be called gdth.
config SCSI_ISCI
tristate "Intel(R) C600 Series Chipset SAS Controller"
depends on PCI && SCSI
# little endian host assumptions
depends on X86
# (temporary): dma api misuse
depends on !DMAR
# (temporary): known alpha quality driver
depends on EXPERIMENTAL
select SCSI_SAS_LIBSAS
---help---
This driver supports the 6Gb/s SAS capabilities of the storage
control unit found in the Intel(R) C600 series chipset.
The experimental tag will be removed after the driver exits alpha
choice
prompt "Default Silicon Revision"
depends on SCSI_ISCI
default PBG_HBA_A2
# temporary A-step silicon is pre-production
config PBG_HBA_BETA
bool "B0"
config PBG_HBA_A2
bool "A2"
config PBG_HBA_A0
bool "A0"
endchoice
config SCSI_GENERIC_NCR5380
tristate "Generic NCR5380/53c400 SCSI PIO support"
depends on ISA && SCSI
......
......@@ -73,6 +73,7 @@ obj-$(CONFIG_SCSI_AACRAID) += aacraid/
obj-$(CONFIG_SCSI_AIC7XXX_OLD) += aic7xxx_old.o
obj-$(CONFIG_SCSI_AIC94XX) += aic94xx/
obj-$(CONFIG_SCSI_PM8001) += pm8001/
obj-$(CONFIG_SCSI_ISCI) += isci/
obj-$(CONFIG_SCSI_IPS) += ips.o
obj-$(CONFIG_SCSI_FD_MCS) += fd_mcs.o
obj-$(CONFIG_SCSI_FUTURE_DOMAIN)+= fdomain.o
......
#TODO kill SCIC_SDS_4_ENABLED it is always true for this
#generation of silicon
EXTRA_CFLAGS += -DSCIC_SDS_4_ENABLED
#temporary until atapi support ready
EXTRA_CFLAGS += -DDISABLE_ATAPI
EXTRA_CFLAGS += -Idrivers/scsi/isci/core/ -Idrivers/scsi/isci/
obj-$(CONFIG_SCSI_ISCI) += isci.o
isci-objs := init.o phy.o request.o sata.o \
remote_device.o port.o timers.o deprecated.o \
host.o task.o events.o \
core/scic_sds_controller.o \
core/scic_sds_remote_device.o \
core/scic_sds_request.o \
core/scic_sds_stp_request.o \
core/scic_sds_stp_packet_request.o \
core/scic_sds_stp_remote_device.o \
core/scic_sds_port.o \
core/scic_sds_port_configuration_agent.o \
core/scic_sds_phy.o \
core/scic_sds_ssp_request.o \
core/scic_sds_remote_node_context.o \
core/scic_sds_smp_request.o \
core/scic_sds_smp_remote_device.o \
core/scic_sds_remote_node_table.o \
core/scic_sds_unsolicited_frame_control.o \
core/sci_base_memory_descriptor_list.o \
core/sci_base_state_machine.o \
core/sci_util.o
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/*
* This file is provided under a dual BSD/GPLv2 license. When using or
* redistributing this file, you may do so under either license.
*
* GPL LICENSE SUMMARY
*
* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
* The full GNU General Public License is included in this distribution
* in the file called LICENSE.GPL.
*
* BSD LICENSE
*
* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _SAT_H_
#define _SAT_H_
/**
* This file contains constants and constructs defined in the SCSI to ATA
* Translation (SAT) T10 standard. For more information please refer to
* www.t10.org.
*
*
*/
/**
*
*
* SAT_PROTOCOLS These constants indicate the various protocol values that can
* be supported in a SAT translator.
*/
#define SAT_PROTOCOL_ATA_HARD_RESET 0
#define SAT_PROTOCOL_SOFT_RESET 1
#define SAT_PROTOCOL_NON_DATA 3
#define SAT_PROTOCOL_PIO_DATA_IN 4
#define SAT_PROTOCOL_PIO_DATA_OUT 5
#define SAT_PROTOCOL_DMA 6
#define SAT_PROTOCOL_DMA_QUEUED 7
#define SAT_PROTOCOL_DEVICE_DIAGNOSTIC 8
#define SAT_PROTOCOL_DEVICE_RESET 9
#define SAT_PROTOCOL_UDMA_DATA_IN 10
#define SAT_PROTOCOL_UDMA_DATA_OUT 11
#define SAT_PROTOCOL_FPDMA 12
#define SAT_PROTOCOL_RETURN_RESPONSE_INFO 15
#define SAT_PROTOCOL_PACKET 0x10
#define SAT_PROTOCOL_PACKET_NON_DATA (SAT_PROTOCOL_PACKET | 0x0)
#define SAT_PROTOCOL_PACKET_DMA_DATA_IN (SAT_PROTOCOL_PACKET | 0x1)
#define SAT_PROTOCOL_PACKET_DMA_DATA_OUT (SAT_PROTOCOL_PACKET | 0x2)
#define SAT_PROTOCOL_PACKET_PIO_DATA_IN (SAT_PROTOCOL_PACKET | 0x3)
#define SAT_PROTOCOL_PACKET_PIO_DATA_OUT (SAT_PROTOCOL_PACKET | 0x4)
#endif /* _SAT_H_ */
/*
* This file is provided under a dual BSD/GPLv2 license. When using or
* redistributing this file, you may do so under either license.
*
* GPL LICENSE SUMMARY
*
* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
* The full GNU General Public License is included in this distribution
* in the file called LICENSE.GPL.
*
* BSD LICENSE
*
* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _SATA_H_
#define _SATA_H_
#include <linux/types.h>
/**
* This file defines all of the SATA releated constants, enumerations, and
* types. Please note that this file does not necessarily contain an
* exhaustive list of all contants and commands.
*
*
*/
/**
*
*
* SATA FIS Types These constants depict the various SATA FIS types devined in
* the serial ATA specification.
*/
#define SATA_FIS_TYPE_REGH2D 0x27
#define SATA_FIS_TYPE_REGD2H 0x34
#define SATA_FIS_TYPE_SETDEVBITS 0xA1
#define SATA_FIS_TYPE_DMA_ACTIVATE 0x39
#define SATA_FIS_TYPE_DMA_SETUP 0x41
#define SATA_FIS_TYPE_BIST_ACTIVATE 0x58
#define SATA_FIS_TYPE_PIO_SETUP 0x5F
#define SATA_FIS_TYPE_DATA 0x46
#define SATA_REGISTER_FIS_SIZE 0x20
/**
* struct sata_fis_header - This is the common definition for a SATA FIS Header
* word. A different header word is defined for any FIS type that does not
* use the standard header.
*
*
*/
struct sata_fis_header {
u32 fis_type:8; /* word 0 */
u32 pm_port:4;
u32 reserved:1;
u32 direction_flag:1; /* direction */
u32 interrupt_flag:1;
u32 command_flag:1; /* command, auto_activate, or notification */
u32 status:8;
u32 error:8;
};
/**
* struct sata_fis_reg_h2d - This is the definition for a SATA Host to Device
* Register FIS.
*
*
*/
struct sata_fis_reg_h2d {
u32 fis_type:8; /* word 0 */
u32 pm_port:4;
u32 reserved0:3;
u32 command_flag:1;
u32 command:8;
u32 features:8;
u32 lba_low:8; /* word 1 */
u32 lba_mid:8;
u32 lba_high:8;
u32 device:8;
u32 lba_low_exp:8; /* word 2 */
u32 lba_mid_exp:8;
u32 lba_high_exp:8;
u32 features_exp:8;
u32 sector_count:8; /* word 3 */
u32 sector_count_exp:8;
u32 reserved1:8;
u32 control:8;
u32 reserved2; /* word 4 */
};
/**
* struct sata_fis_reg_d2h - SATA Device To Host FIS
*
*
*/
struct sata_fis_reg_d2h {
u32 fis_type:8; /* word 0 */
u32 pm_port:4;
u32 reserved0:2;
u32 irq:1;
u32 reserved1:1;
u32 status:8;
u32 error:8;
u8 lba_low; /* word 1 */
u8 lba_mid;
u8 lba_high;
u8 device;
u8 lba_low_exp; /* word 2 */
u8 lba_mid_exp;
u8 lba_high_exp;
u8 reserved;
u8 sector_count; /* word 3 */
u8 sector_count_exp;
u16 reserved2;
u32 reserved3;
};
/**
*
*
* Status field bit definitions
*/
#define SATA_FIS_STATUS_DEVBITS_MASK (0x77)
/**
* struct sata_fis_set_dev_bits - SATA Set Device Bits FIS
*
*
*/
struct sata_fis_set_dev_bits {
u32 fis_type:8; /* word 0 */
u32 pm_port:4;
u32 reserved0:2;
u32 irq:1;
u32 notification:1;
u32 status_low:4;
u32 status_high:4;
u32 error:8;
u32 s_active; /* word 1 */
};
/**
* struct sata_fis_dma_activate - SATA DMA Activate FIS
*
*
*/
struct sata_fis_dma_activate {
u32 fis_type:8; /* word 0 */
u32 pm_port:4;
u32 reserved0:24;
};
/**
*
*
* The lower 5 bits in the DMA Buffer ID Low field of the DMA Setup are used to
* communicate the command tag.
*/
#define SATA_DMA_SETUP_TAG_ENABLE 0x1F
#define SATA_DMA_SETUP_AUTO_ACT_ENABLE 0x80
/**
* struct sata_fis_dma_setup - SATA DMA Setup FIS
*
*
*/
struct sata_fis_dma_setup {
u32 fis_type:8; /* word 0 */
u32 pm_port:4;
u32 reserved_00:1;
u32 direction:1;
u32 irq:1;
u32 auto_activate:1;
u32 reserved_01:16;
u32 dma_buffer_id_low; /* word 1 */
u32 dma_buffer_id_high; /* word 2 */
u32 reserved0; /* word 3 */
u32 dma_buffer_offset; /* word 4 */
u32 dma_transfer_count; /* word 5 */
u32 reserved1; /* word 6 */
};
/**
* struct sata_fis_bist_activate - SATA BIST Activate FIS
*
*
*/
struct sata_fis_bist_activate {
u32 fis_type:8; /* word 0 */
u32 reserved0:8;
u32 pattern_definition:8;
u32 reserved1:8;
u32 data1; /* word 1 */
u32 data2; /* word 1 */
};
/*
* SATA PIO Setup FIS
*/
struct sata_fis_pio_setup {
u32 fis_type:8; /* word 0 */
u32 pm_port:4;
u32 reserved_00:1;
u32 direction:1;
u32 irq:1;
u32 reserved_01:1;
u32 status:8;
u32 error:8;
u32 lba_low:8; /* word 1 */
u32 lba_mid:8;
u32 lba_high:8;
u32 device:8;
u32 lba_low_exp:8; /* word 2 */
u32 lba_mid_exp:8;
u32 lba_high_exp:8;
u32 reserved:8;
u32 sector_count:8; /* word 3 */
u32 sector_count_exp:8;
u32 reserved1:8;
u32 ending_status:8;
u32 transfter_count:16; /* word 4 */
u32 reserved3:16;
};
/**
* struct sata_fis_data - SATA Data FIS
*
*
*/
struct sata_fis_data {
u32 fis_type:8; /* word 0 */
u32 pm_port:4;
u32 reserved0:24;
u8 data[4]; /* word 1 */
};
#endif /* _SATA_H_ */
/*
* This file is provided under a dual BSD/GPLv2 license. When using or
* redistributing this file, you may do so under either license.
*
* GPL LICENSE SUMMARY
*
* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
* The full GNU General Public License is included in this distribution
* in the file called LICENSE.GPL.
*
* BSD LICENSE
*
* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/**
* This file defines all of the SCSI related constants, enumerations, and
* types. Please note that this file does not necessarily contain an
* exhaustive list of all constants, commands, sub-commands, etc.
*
*
*/
#ifndef _SCSI_H__
#define _SCSI_H__
/*
* ******************************************************************************
* * C O N S T A N T S A N D M A C R O S
* ****************************************************************************** */
/**
* enum _SCSI_TASK_MGMT_REQUEST_CODES - This enumberation contains the
* constants to be used for SCSI task management request codes. SAM does
* not specify any particular values for these codes so constants used here
* are the same as those specified in SAS.
*
*
*/
enum scsi_task_mgmt_request_codes {
SCSI_TASK_REQUEST_ABORT_TASK = 0x01,
SCSI_TASK_REQUEST_ABORT_TASK_SET = 0x02,
SCSI_TASK_REQUEST_CLEAR_TASK_SET = 0x04,
SCSI_TASK_REQUEST_LOGICAL_UNIT_RESET = 0x08,
SCSI_TASK_REQUEST_I_T_NEXUS_RESET = 0x10,
SCSI_TASK_REQUEST_CLEAR_ACA = 0x40,
SCSI_TASK_REQUEST_QUERY_TASK = 0x80,
SCSI_TASK_REQUEST_QUERY_TASK_SET = 0x81,
SCSI_TASK_REQUEST_QUERY_UNIT_ATTENTION = 0x82,
};
/**
* enum _SCSI_TASK_MGMT_RESPONSE_CODES - This enumeration contains all of the
* SCSI task management response codes.
*
*
*/
enum scsi_task_mgmt_response_codes {
SCSI_TASK_MGMT_FUNC_COMPLETE = 0,
SCSI_INVALID_FRAME = 2,
SCSI_TASK_MGMT_FUNC_NOT_SUPPORTED = 4,
SCSI_TASK_MGMT_FUNC_FAILED = 5,
SCSI_TASK_MGMT_FUNC_SUCCEEDED = 8,
SCSI_INVALID_LUN = 9
};
/**
* enum _SCSI_SENSE_RESPONSE_CODE - this enumeration depicts the types of sense
* data responses as per SPC-3.
*
*
*/
enum scsi_sense_response_code {
SCSI_FIXED_CURRENT_RESPONSE_CODE = 0x70,
SCSI_FIXED_DEFERRED_RESPONSE_CODE = 0x71,
SCSI_DESCRIPTOR_CURRENT_RESPONSE_CODE = 0x72,
SCSI_DESCRIPTOR_DEFERRED_RESPONSE_CODE = 0x73
};
/*
* This constant represents the valid bit located in byte 0 of a FIXED
* format sense data. */
#define SCSI_FIXED_SENSE_DATA_VALID_BIT 0x80
#define SCSI_FIXED_SENSE_DATA_BASE_LENGTH 18
/* This value is used in the DATAPRES field of the SCSI Response IU. */
#define SCSI_RESPONSE_DATA_PRES_SENSE_DATA 0x02
/**
*
*
* SCSI_SENSE_KEYS These constants delineate all of the SCSI protocol sense key
* constants
*/
#define SCSI_SENSE_NO_SENSE 0x00
#define SCSI_SENSE_RECOVERED_ERROR 0x01
#define SCSI_SENSE_NOT_READY 0x02
#define SCSI_SENSE_MEDIUM_ERROR 0x03
#define SCSI_SENSE_HARDWARE_ERROR 0x04
#define SCSI_SENSE_ILLEGAL_REQUEST 0x05
#define SCSI_SENSE_UNIT_ATTENTION 0x06
#define SCSI_SENSE_DATA_PROTECT 0x07
#define SCSI_SENSE_BLANK_CHECK 0x08
#define SCSI_SENSE_VENDOR_SPECIFIC 0x09
#define SCSI_SENSE_COPY_ABORTED 0x0A
#define SCSI_SENSE_ABORTED_COMMAND 0x0B
#define SCSI_SENSE_VOLUME_OVERFLOW 0x0D
#define SCSI_SENSE_MISCOMPARE 0x0E
/**
*
*
* SCSI_ADDITIONAL_SENSE_CODES These constants delineate all of the SCSI
* protocol additional sense code constants.
*/
#define SCSI_ASC_NO_ADDITIONAL_SENSE 0x00
#define SCSI_ASC_INITIALIZING_COMMAND_REQUIRED 0x04
#define SCSI_ASC_LUN_SELF_TEST_IN_PROGRESS 0x04
#define SCSI_ASC_LUN_FORMAT_IN_PROGRESS 0x04
#define SCSI_ASC_LUN_NOT_RESPOND_TO_SELECTION 0x05
#define SCSI_ASC_UNRECOVERED_READ_ERROR 0x11
#define SCSI_ASC_INVALID_COMMAND_OPERATION_CODE 0x20
#define SCSI_ASC_LBA_OUT_OF_RANGE 0x21
#define SCSI_ASC_INVALID_FIELD_IN_CDB 0x24
#define SCSI_ASC_INVALID_FIELD_IN_PARM_LIST 0x26
#define SCSI_ASC_WRITE_PROTECTED 0x27