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linux/drivers/scsi/hpsa_cmd.h
Stephen M. Cameron 960a30e7a7 [SCSI] hpsa: Inform controller we are using 32-bit tags. 
Controller will transfer only 32-bits on completion if it
knows we are only using 32-bit tags.  Also, some newer controllers
apparently (and erroneously) require that we only use 32-bit tags,
and that we inform the controller of this.

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2011-02-18 12:33:52 -06:00

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/*
* Disk Array driver for HP Smart Array SAS controllers
* Copyright 2000, 2009 Hewlett-Packard Development Company, L.P.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* 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, GOOD TITLE or
* NON INFRINGEMENT. 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* Questions/Comments/Bugfixes to iss_storagedev@hp.com
*
*/
#ifndef HPSA_CMD_H
#define HPSA_CMD_H
/* general boundary defintions */
#define SENSEINFOBYTES 32 /* may vary between hbas */
#define MAXSGENTRIES 32
#define HPSA_SG_CHAIN 0x80000000
#define MAXREPLYQS 256
/* Command Status value */
#define CMD_SUCCESS 0x0000
#define CMD_TARGET_STATUS 0x0001
#define CMD_DATA_UNDERRUN 0x0002
#define CMD_DATA_OVERRUN 0x0003
#define CMD_INVALID 0x0004
#define CMD_PROTOCOL_ERR 0x0005
#define CMD_HARDWARE_ERR 0x0006
#define CMD_CONNECTION_LOST 0x0007
#define CMD_ABORTED 0x0008
#define CMD_ABORT_FAILED 0x0009
#define CMD_UNSOLICITED_ABORT 0x000A
#define CMD_TIMEOUT 0x000B
#define CMD_UNABORTABLE 0x000C
/* Unit Attentions ASC's as defined for the MSA2012sa */
#define POWER_OR_RESET 0x29
#define STATE_CHANGED 0x2a
#define UNIT_ATTENTION_CLEARED 0x2f
#define LUN_FAILED 0x3e
#define REPORT_LUNS_CHANGED 0x3f
/* Unit Attentions ASCQ's as defined for the MSA2012sa */
/* These ASCQ's defined for ASC = POWER_OR_RESET */
#define POWER_ON_RESET 0x00
#define POWER_ON_REBOOT 0x01
#define SCSI_BUS_RESET 0x02
#define MSA_TARGET_RESET 0x03
#define CONTROLLER_FAILOVER 0x04
#define TRANSCEIVER_SE 0x05
#define TRANSCEIVER_LVD 0x06
/* These ASCQ's defined for ASC = STATE_CHANGED */
#define RESERVATION_PREEMPTED 0x03
#define ASYM_ACCESS_CHANGED 0x06
#define LUN_CAPACITY_CHANGED 0x09
/* transfer direction */
#define XFER_NONE 0x00
#define XFER_WRITE 0x01
#define XFER_READ 0x02
#define XFER_RSVD 0x03
/* task attribute */
#define ATTR_UNTAGGED 0x00
#define ATTR_SIMPLE 0x04
#define ATTR_HEADOFQUEUE 0x05
#define ATTR_ORDERED 0x06
#define ATTR_ACA 0x07
/* cdb type */
#define TYPE_CMD 0x00
#define TYPE_MSG 0x01
/* config space register offsets */
#define CFG_VENDORID 0x00
#define CFG_DEVICEID 0x02
#define CFG_I2OBAR 0x10
#define CFG_MEM1BAR 0x14
/* i2o space register offsets */
#define I2O_IBDB_SET 0x20
#define I2O_IBDB_CLEAR 0x70
#define I2O_INT_STATUS 0x30
#define I2O_INT_MASK 0x34
#define I2O_IBPOST_Q 0x40
#define I2O_OBPOST_Q 0x44
#define I2O_DMA1_CFG 0x214
/* Configuration Table */
#define CFGTBL_ChangeReq 0x00000001l
#define CFGTBL_AccCmds 0x00000001l
#define DOORBELL_CTLR_RESET 0x00000004l
#define CFGTBL_Trans_Simple 0x00000002l
#define CFGTBL_Trans_Performant 0x00000004l
#define CFGTBL_Trans_use_short_tags 0x20000000l
#define CFGTBL_BusType_Ultra2 0x00000001l
#define CFGTBL_BusType_Ultra3 0x00000002l
#define CFGTBL_BusType_Fibre1G 0x00000100l
#define CFGTBL_BusType_Fibre2G 0x00000200l
struct vals32 {
u32 lower;
u32 upper;
};
union u64bit {
struct vals32 val32;
u64 val;
};
/* FIXME this is a per controller value (barf!) */
#define HPSA_MAX_TARGETS_PER_CTLR 16
#define HPSA_MAX_LUN 256
#define HPSA_MAX_PHYS_LUN 1024
/* SCSI-3 Commands */
#pragma pack(1)
#define HPSA_INQUIRY 0x12
struct InquiryData {
u8 data_byte[36];
};
#define HPSA_REPORT_LOG 0xc2 /* Report Logical LUNs */
#define HPSA_REPORT_PHYS 0xc3 /* Report Physical LUNs */
struct ReportLUNdata {
u8 LUNListLength[4];
u32 reserved;
u8 LUN[HPSA_MAX_LUN][8];
};
struct ReportExtendedLUNdata {
u8 LUNListLength[4];
u8 extended_response_flag;
u8 reserved[3];
u8 LUN[HPSA_MAX_LUN][24];
};
struct SenseSubsystem_info {
u8 reserved[36];
u8 portname[8];
u8 reserved1[1108];
};
/* BMIC commands */
#define BMIC_READ 0x26
#define BMIC_WRITE 0x27
#define BMIC_CACHE_FLUSH 0xc2
#define HPSA_CACHE_FLUSH 0x01 /* C2 was already being used by HPSA */
/* Command List Structure */
union SCSI3Addr {
struct {
u8 Dev;
u8 Bus:6;
u8 Mode:2; /* b00 */
} PeripDev;
struct {
u8 DevLSB;
u8 DevMSB:6;
u8 Mode:2; /* b01 */
} LogDev;
struct {
u8 Dev:5;
u8 Bus:3;
u8 Targ:6;
u8 Mode:2; /* b10 */
} LogUnit;
};
struct PhysDevAddr {
u32 TargetId:24;
u32 Bus:6;
u32 Mode:2;
/* 2 level target device addr */
union SCSI3Addr Target[2];
};
struct LogDevAddr {
u32 VolId:30;
u32 Mode:2;
u8 reserved[4];
};
union LUNAddr {
u8 LunAddrBytes[8];
union SCSI3Addr SCSI3Lun[4];
struct PhysDevAddr PhysDev;
struct LogDevAddr LogDev;
};
struct CommandListHeader {
u8 ReplyQueue;
u8 SGList;
u16 SGTotal;
struct vals32 Tag;
union LUNAddr LUN;
};
struct RequestBlock {
u8 CDBLen;
struct {
u8 Type:3;
u8 Attribute:3;
u8 Direction:2;
} Type;
u16 Timeout;
u8 CDB[16];
};
struct ErrDescriptor {
struct vals32 Addr;
u32 Len;
};
struct SGDescriptor {
struct vals32 Addr;
u32 Len;
u32 Ext;
};
union MoreErrInfo {
struct {
u8 Reserved[3];
u8 Type;
u32 ErrorInfo;
} Common_Info;
struct {
u8 Reserved[2];
u8 offense_size; /* size of offending entry */
u8 offense_num; /* byte # of offense 0-base */
u32 offense_value;
} Invalid_Cmd;
};
struct ErrorInfo {
u8 ScsiStatus;
u8 SenseLen;
u16 CommandStatus;
u32 ResidualCnt;
union MoreErrInfo MoreErrInfo;
u8 SenseInfo[SENSEINFOBYTES];
};
/* Command types */
#define CMD_IOCTL_PEND 0x01
#define CMD_SCSI 0x03
/* This structure needs to be divisible by 32 for new
* indexing method and performant mode.
*/
#define PAD32 32
#define PAD64DIFF 0
#define USEEXTRA ((sizeof(void *) - 4)/4)
#define PADSIZE (PAD32 + PAD64DIFF * USEEXTRA)
#define DIRECT_LOOKUP_SHIFT 5
#define DIRECT_LOOKUP_BIT 0x10
#define DIRECT_LOOKUP_MASK (~((1 << DIRECT_LOOKUP_SHIFT) - 1))
#define HPSA_ERROR_BIT 0x02
struct ctlr_info; /* defined in hpsa.h */
/* The size of this structure needs to be divisible by 32
* on all architectures because low 5 bits of the addresses
* are used as follows:
*
* bit 0: to device, used to indicate "performant mode" command
* from device, indidcates error status.
* bit 1-3: to device, indicates block fetch table entry for
* reducing DMA in fetching commands from host memory.
* bit 4: used to indicate whether tag is "direct lookup" (index),
* or a bus address.
*/
struct CommandList {
struct CommandListHeader Header;
struct RequestBlock Request;
struct ErrDescriptor ErrDesc;
struct SGDescriptor SG[MAXSGENTRIES];
/* information associated with the command */
u32 busaddr; /* physical addr of this record */
struct ErrorInfo *err_info; /* pointer to the allocated mem */
struct ctlr_info *h;
int cmd_type;
long cmdindex;
struct list_head list;
struct request *rq;
struct completion *waiting;
void *scsi_cmd;
/* on 64 bit architectures, to get this to be 32-byte-aligned
* it so happens we need PAD_64 bytes of padding, on 32 bit systems,
* we need PAD_32 bytes of padding (see below). This does that.
* If it happens that 64 bit and 32 bit systems need different
* padding, PAD_32 and PAD_64 can be set independently, and.
* the code below will do the right thing.
*/
#define IS_32_BIT ((8 - sizeof(long))/4)
#define IS_64_BIT (!IS_32_BIT)
#define PAD_32 (4)
#define PAD_64 (4)
#define COMMANDLIST_PAD (IS_32_BIT * PAD_32 + IS_64_BIT * PAD_64)
u8 pad[COMMANDLIST_PAD];
};
/* Configuration Table Structure */
struct HostWrite {
u32 TransportRequest;
u32 Reserved;
u32 CoalIntDelay;
u32 CoalIntCount;
};
#define SIMPLE_MODE 0x02
#define PERFORMANT_MODE 0x04
#define MEMQ_MODE 0x08
struct CfgTable {
u8 Signature[4];
u32 SpecValence;
u32 TransportSupport;
u32 TransportActive;
struct HostWrite HostWrite;
u32 CmdsOutMax;
u32 BusTypes;
u32 TransMethodOffset;
u8 ServerName[16];
u32 HeartBeat;
u32 SCSI_Prefetch;
u32 MaxScatterGatherElements;
u32 MaxLogicalUnits;
u32 MaxPhysicalDevices;
u32 MaxPhysicalDrivesPerLogicalUnit;
u32 MaxPerformantModeCommands;
u8 reserved[0x78 - 0x58];
u32 misc_fw_support; /* offset 0x78 */
#define MISC_FW_DOORBELL_RESET (0x02)
};
#define NUM_BLOCKFETCH_ENTRIES 8
struct TransTable_struct {
u32 BlockFetch[NUM_BLOCKFETCH_ENTRIES];
u32 RepQSize;
u32 RepQCount;
u32 RepQCtrAddrLow32;
u32 RepQCtrAddrHigh32;
u32 RepQAddr0Low32;
u32 RepQAddr0High32;
};
struct hpsa_pci_info {
unsigned char bus;
unsigned char dev_fn;
unsigned short domain;
u32 board_id;
};
#pragma pack()
#endif /* HPSA_CMD_H */
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