[SCSI] hpsa: add driver for HP Smart Array controllers.

This driver supports a subset of HP Smart Array Controllers.
It is a SCSI alternative to the cciss driver.

[akpm@linux-foundation.org: avoid helpful cleanup patches]
[achiang@hp.com: make device attrs static]
[akpm@linux-foundation.org: msleep() does set_current_state() itself]
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: Mike Miller <mikem@beardog.cce.hp.com>
Signed-off-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

1 files changed, 326 insertions, 0 deletions

diff --git a/drivers/scsi/hpsa_cmd.h b/drivers/scsi/hpsa_cmd.h
new file mode 100644
index 000000000000..12d71387ed9a
--- /dev/null
+++ b/drivers/scsi/hpsa_cmd.h
@@ -0,0 +1,326 @@
+/*
+ *    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            31
+#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 CFGTBL_Trans_Simple     0x00000002l
+
+#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];
+};
+
+#define HPSA_READ_CAPACITY 0x25 /* Read Capacity */
+struct ReadCapdata {
+        __u8 total_size[4];     /* Total size in blocks */
+        __u8 block_size[4];     /* Size of blocks in bytes */
+};
+
+#if 0
+/* 12 byte commands not implemented in firmware yet. */
+#define HPSA_READ       0xa8
+#define HPSA_WRITE      0xaa
+#endif
+
+#define HPSA_READ   0x28    /* Read(10) */
+#define HPSA_WRITE  0x2a    /* Write(10) */
+
+/* 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
+
+struct ctlr_info; /* defined in hpsa.h */
+/* The size of this structure needs to be divisible by 8
+ * od on all architectures, because the controller uses 2
+ * lower bits of the address, and the driver uses 1 lower
+ * bit (3 bits total.)
+ */
+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 hlist_node list;
+        struct CommandList *prev;
+        struct CommandList *next;
+        struct request *rq;
+        struct completion *waiting;
+        int      retry_count;
+        void   *scsi_cmd;
+};
+
+/* Configuration Table Structure */
+struct HostWrite {
+        __u32 TransportRequest;
+        __u32 Reserved;
+        __u32 CoalIntDelay;
+        __u32 CoalIntCount;
+};
+
+struct CfgTable {
+        __u8             Signature[4];
+        __u32            SpecValence;
+        __u32            TransportSupport;
+        __u32            TransportActive;
+        struct HostWrite HostWrite;
+        __u32            CmdsOutMax;
+        __u32            BusTypes;
+        __u32            Reserved;
+        __u8             ServerName[16];
+        __u32            HeartBeat;
+        __u32            SCSI_Prefetch;
+};
+
+struct hpsa_pci_info {
+        unsigned char   bus;
+        unsigned char   dev_fn;
+        unsigned short  domain;
+        __u32           board_id;
+};
+
+#pragma pack()
+#endif /* HPSA_CMD_H */