drivers/scsi/ipr.h

/*
 * ipr.h -- driver for IBM Power Linux RAID adapters
 *
 * Written By: Brian King <brking@us.ibm.com>, IBM Corporation
 *
 * Copyright (C) 2003, 2004 IBM Corporation
 *
 * 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; either version 2 of the License, or
 * (at your option) any later version.
 *
 * 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * Alan Cox <alan@redhat.com> - Removed several careless u32/dma_addr_t errors
 *				that broke 64bit platforms.
 */

#ifndef _IPR_H
#define _IPR_H

#include <linux/types.h>
#include <linux/completion.h>
#include <linux/list.h>
#include <linux/kref.h>
#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>

/*
 * Literals
 */
#define IPR_DRIVER_VERSION "2.0.14"
#define IPR_DRIVER_DATE "(May 2, 2005)"

/*
 * IPR_DBG_TRACE: Setting this to 1 will turn on some general function tracing
 *			resulting in a bunch of extra debugging printks to the console
 *
 * IPR_DEBUG:	Setting this to 1 will turn on some error path tracing.
 *			Enables the ipr_trace macro.
 */
#ifdef IPR_DEBUG_ALL
#define IPR_DEBUG				1
#define IPR_DBG_TRACE			1
#else
#define IPR_DEBUG				0
#define IPR_DBG_TRACE			0
#endif

/*
 * IPR_MAX_CMD_PER_LUN: This defines the maximum number of outstanding
 *	ops per device for devices not running tagged command queuing.
 *	This can be adjusted at runtime through sysfs device attributes.
 */
#define IPR_MAX_CMD_PER_LUN				6

/*
 * IPR_NUM_BASE_CMD_BLKS: This defines the maximum number of
 *	ops the mid-layer can send to the adapter.
 */
#define IPR_NUM_BASE_CMD_BLKS				100

#define IPR_SUBS_DEV_ID_2780	0x0264
#define IPR_SUBS_DEV_ID_5702	0x0266
#define IPR_SUBS_DEV_ID_5703	0x0278
#define IPR_SUBS_DEV_ID_572E  0x028D
#define IPR_SUBS_DEV_ID_573E  0x02D3
#define IPR_SUBS_DEV_ID_573D  0x02D4
#define IPR_SUBS_DEV_ID_571A	0x02C0
#define IPR_SUBS_DEV_ID_571B	0x02BE
#define IPR_SUBS_DEV_ID_571E  0x02BF

#define IPR_NAME				"ipr"

/*
 * Return codes
 */
#define IPR_RC_JOB_CONTINUE		1
#define IPR_RC_JOB_RETURN		2

/*
 * IOASCs
 */
#define IPR_IOASC_NR_INIT_CMD_REQUIRED		0x02040200
#define IPR_IOASC_SYNC_REQUIRED			0x023f0000
#define IPR_IOASC_MED_DO_NOT_REALLOC		0x03110C00
#define IPR_IOASC_HW_SEL_TIMEOUT			0x04050000
#define IPR_IOASC_HW_DEV_BUS_STATUS			0x04448500
#define	IPR_IOASC_IOASC_MASK			0xFFFFFF00
#define	IPR_IOASC_SCSI_STATUS_MASK		0x000000FF
#define IPR_IOASC_IR_RESOURCE_HANDLE		0x05250000
#define IPR_IOASC_BUS_WAS_RESET			0x06290000
#define IPR_IOASC_BUS_WAS_RESET_BY_OTHER		0x06298000
#define IPR_IOASC_ABORTED_CMD_TERM_BY_HOST	0x0B5A0000

#define IPR_FIRST_DRIVER_IOASC			0x10000000
#define IPR_IOASC_IOA_WAS_RESET			0x10000001
#define IPR_IOASC_PCI_ACCESS_ERROR			0x10000002

#define IPR_NUM_LOG_HCAMS				2
#define IPR_NUM_CFG_CHG_HCAMS				2
#define IPR_NUM_HCAMS	(IPR_NUM_LOG_HCAMS + IPR_NUM_CFG_CHG_HCAMS)
#define IPR_MAX_NUM_TARGETS_PER_BUS			0x10
#define IPR_MAX_NUM_LUNS_PER_TARGET			256
#define IPR_MAX_NUM_VSET_LUNS_PER_TARGET	8
#define IPR_VSET_BUS					0xff
#define IPR_IOA_BUS						0xff
#define IPR_IOA_TARGET					0xff
#define IPR_IOA_LUN						0xff
#define IPR_MAX_NUM_BUSES				4
#define IPR_MAX_BUS_TO_SCAN				IPR_MAX_NUM_BUSES

#define IPR_NUM_RESET_RELOAD_RETRIES		3

/* We need resources for HCAMS, IOA reset, IOA bringdown, and ERP */
#define IPR_NUM_INTERNAL_CMD_BLKS	(IPR_NUM_HCAMS + \
                                     ((IPR_NUM_RESET_RELOAD_RETRIES + 1) * 2) + 3)

#define IPR_MAX_COMMANDS		IPR_NUM_BASE_CMD_BLKS
#define IPR_NUM_CMD_BLKS		(IPR_NUM_BASE_CMD_BLKS + \
						IPR_NUM_INTERNAL_CMD_BLKS)

#define IPR_MAX_PHYSICAL_DEVS				192

#define IPR_MAX_SGLIST					64
#define IPR_IOA_MAX_SECTORS				32767
#define IPR_VSET_MAX_SECTORS				512
#define IPR_MAX_CDB_LEN					16

#define IPR_DEFAULT_BUS_WIDTH				16
#define IPR_80MBs_SCSI_RATE		((80 * 10) / (IPR_DEFAULT_BUS_WIDTH / 8))
#define IPR_U160_SCSI_RATE	((160 * 10) / (IPR_DEFAULT_BUS_WIDTH / 8))
#define IPR_U320_SCSI_RATE	((320 * 10) / (IPR_DEFAULT_BUS_WIDTH / 8))
#define IPR_MAX_SCSI_RATE(width) ((320 * 10) / ((width) / 8))

#define IPR_IOA_RES_HANDLE				0xffffffff
#define IPR_IOA_RES_ADDR				0x00ffffff

/*
 * Adapter Commands
 */
#define IPR_QUERY_RSRC_STATE				0xC2
#define IPR_RESET_DEVICE				0xC3
#define	IPR_RESET_TYPE_SELECT				0x80
#define	IPR_LUN_RESET					0x40
#define	IPR_TARGET_RESET					0x20
#define	IPR_BUS_RESET					0x10
#define IPR_ID_HOST_RR_Q				0xC4
#define IPR_QUERY_IOA_CONFIG				0xC5
#define IPR_CANCEL_ALL_REQUESTS			0xCE
#define IPR_HOST_CONTROLLED_ASYNC			0xCF
#define	IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE	0x01
#define	IPR_HCAM_CDB_OP_CODE_LOG_DATA		0x02
#define IPR_SET_SUPPORTED_DEVICES			0xFB
#define IPR_IOA_SHUTDOWN				0xF7
#define	IPR_WR_BUF_DOWNLOAD_AND_SAVE			0x05

/*
 * Timeouts
 */
#define IPR_SHUTDOWN_TIMEOUT			(ipr_fastfail ? 60 * HZ : 10 * 60 * HZ)
#define IPR_VSET_RW_TIMEOUT			(ipr_fastfail ? 30 * HZ : 2 * 60 * HZ)
#define IPR_ABBREV_SHUTDOWN_TIMEOUT		(10 * HZ)
#define IPR_DEVICE_RESET_TIMEOUT		(ipr_fastfail ? 10 * HZ : 30 * HZ)
#define IPR_CANCEL_ALL_TIMEOUT		(ipr_fastfail ? 10 * HZ : 30 * HZ)
#define IPR_ABORT_TASK_TIMEOUT		(ipr_fastfail ? 10 * HZ : 30 * HZ)
#define IPR_INTERNAL_TIMEOUT			(ipr_fastfail ? 10 * HZ : 30 * HZ)
#define IPR_WRITE_BUFFER_TIMEOUT		(10 * 60 * HZ)
#define IPR_SET_SUP_DEVICE_TIMEOUT		(2 * 60 * HZ)
#define IPR_REQUEST_SENSE_TIMEOUT		(10 * HZ)
#define IPR_OPERATIONAL_TIMEOUT		(5 * 60)
#define IPR_WAIT_FOR_RESET_TIMEOUT		(2 * HZ)
#define IPR_CHECK_FOR_RESET_TIMEOUT		(HZ / 10)
#define IPR_WAIT_FOR_BIST_TIMEOUT		(2 * HZ)
#define IPR_DUMP_TIMEOUT			(15 * HZ)

/*
 * SCSI Literals
 */
#define IPR_VENDOR_ID_LEN			8
#define IPR_PROD_ID_LEN				16
#define IPR_SERIAL_NUM_LEN			8

/*
 * Hardware literals
 */
#define IPR_FMT2_MBX_ADDR_MASK				0x0fffffff
#define IPR_FMT2_MBX_BAR_SEL_MASK			0xf0000000
#define IPR_FMT2_MKR_BAR_SEL_SHIFT			28
#define IPR_GET_FMT2_BAR_SEL(mbx) \
(((mbx) & IPR_FMT2_MBX_BAR_SEL_MASK) >> IPR_FMT2_MKR_BAR_SEL_SHIFT)
#define IPR_SDT_FMT2_BAR0_SEL				0x0
#define IPR_SDT_FMT2_BAR1_SEL				0x1
#define IPR_SDT_FMT2_BAR2_SEL				0x2
#define IPR_SDT_FMT2_BAR3_SEL				0x3
#define IPR_SDT_FMT2_BAR4_SEL				0x4
#define IPR_SDT_FMT2_BAR5_SEL				0x5
#define IPR_SDT_FMT2_EXP_ROM_SEL			0x8
#define IPR_FMT2_SDT_READY_TO_USE			0xC4D4E3F2
#define IPR_DOORBELL					0x82800000

#define IPR_PCII_IOA_TRANS_TO_OPER			(0x80000000 >> 0)
#define IPR_PCII_IOARCB_XFER_FAILED			(0x80000000 >> 3)
#define IPR_PCII_IOA_UNIT_CHECKED			(0x80000000 >> 4)
#define IPR_PCII_NO_HOST_RRQ				(0x80000000 >> 5)
#define IPR_PCII_CRITICAL_OPERATION			(0x80000000 >> 6)
#define IPR_PCII_IO_DEBUG_ACKNOWLEDGE		(0x80000000 >> 7)
#define IPR_PCII_IOARRIN_LOST				(0x80000000 >> 27)
#define IPR_PCII_MMIO_ERROR				(0x80000000 >> 28)
#define IPR_PCII_PROC_ERR_STATE			(0x80000000 >> 29)
#define IPR_PCII_HRRQ_UPDATED				(0x80000000 >> 30)
#define IPR_PCII_CORE_ISSUED_RST_REQ		(0x80000000 >> 31)

#define IPR_PCII_ERROR_INTERRUPTS \
(IPR_PCII_IOARCB_XFER_FAILED | IPR_PCII_IOA_UNIT_CHECKED | \
IPR_PCII_NO_HOST_RRQ | IPR_PCII_IOARRIN_LOST | IPR_PCII_MMIO_ERROR)

#define IPR_PCII_OPER_INTERRUPTS \
(IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED | IPR_PCII_IOA_TRANS_TO_OPER)

#define IPR_UPROCI_RESET_ALERT			(0x80000000 >> 7)
#define IPR_UPROCI_IO_DEBUG_ALERT			(0x80000000 >> 9)

#define IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC		200000	/* 200 ms */
#define IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC		200000	/* 200 ms */

/*
 * Dump literals
 */
#define IPR_MAX_IOA_DUMP_SIZE				(4 * 1024 * 1024)
#define IPR_NUM_SDT_ENTRIES				511
#define IPR_MAX_NUM_DUMP_PAGES	((IPR_MAX_IOA_DUMP_SIZE / PAGE_SIZE) + 1)

/*
 * Misc literals
 */
#define IPR_NUM_IOADL_ENTRIES			IPR_MAX_SGLIST

/*
 * Adapter interface types
 */

struct ipr_res_addr {
	u8 reserved;
	u8 bus;
	u8 target;
	u8 lun;
#define IPR_GET_PHYS_LOC(res_addr) \
	(((res_addr).bus << 16) | ((res_addr).target << 8) | (res_addr).lun)
}__attribute__((packed, aligned (4)));

struct ipr_std_inq_vpids {
	u8 vendor_id[IPR_VENDOR_ID_LEN];
	u8 product_id[IPR_PROD_ID_LEN];
}__attribute__((packed));

struct ipr_vpd {
	struct ipr_std_inq_vpids vpids;
	u8 sn[IPR_SERIAL_NUM_LEN];
}__attribute__((packed));

struct ipr_std_inq_data {
	u8 peri_qual_dev_type;
#define IPR_STD_INQ_PERI_QUAL(peri) ((peri) >> 5)
#define IPR_STD_INQ_PERI_DEV_TYPE(peri) ((peri) & 0x1F)

	u8 removeable_medium_rsvd;
#define IPR_STD_INQ_REMOVEABLE_MEDIUM 0x80

#define IPR_IS_DASD_DEVICE(std_inq) \
((IPR_STD_INQ_PERI_DEV_TYPE((std_inq).peri_qual_dev_type) == TYPE_DISK) && \
!(((std_inq).removeable_medium_rsvd) & IPR_STD_INQ_REMOVEABLE_MEDIUM))

#define IPR_IS_SES_DEVICE(std_inq) \
(IPR_STD_INQ_PERI_DEV_TYPE((std_inq).peri_qual_dev_type) == TYPE_ENCLOSURE)

	u8 version;
	u8 aen_naca_fmt;
	u8 additional_len;
	u8 sccs_rsvd;
	u8 bq_enc_multi;
	u8 sync_cmdq_flags;

	struct ipr_std_inq_vpids vpids;

	u8 ros_rsvd_ram_rsvd[4];

	u8 serial_num[IPR_SERIAL_NUM_LEN];
}__attribute__ ((packed));

struct ipr_config_table_entry {
	u8 service_level;
	u8 array_id;
	u8 flags;
#define IPR_IS_IOA_RESOURCE	0x80
#define IPR_IS_ARRAY_MEMBER 0x20
#define IPR_IS_HOT_SPARE	0x10

	u8 rsvd_subtype;
#define IPR_RES_SUBTYPE(res) (((res)->cfgte.rsvd_subtype) & 0x0f)
#define IPR_SUBTYPE_AF_DASD			0
#define IPR_SUBTYPE_GENERIC_SCSI	1
#define IPR_SUBTYPE_VOLUME_SET		2

	struct ipr_res_addr res_addr;
	__be32 res_handle;
	__be32 reserved4[2];
	struct ipr_std_inq_data std_inq_data;
}__attribute__ ((packed, aligned (4)));

struct ipr_config_table_hdr {
	u8 num_entries;
	u8 flags;
#define IPR_UCODE_DOWNLOAD_REQ	0x10
	__be16 reserved;
}__attribute__((packed, aligned (4)));

struct ipr_config_table {
	struct ipr_config_table_hdr hdr;
	struct ipr_config_table_entry dev[IPR_MAX_PHYSICAL_DEVS];
}__attribute__((packed, aligned (4)));

struct ipr_hostrcb_cfg_ch_not {
	struct ipr_config_table_entry cfgte;
	u8 reserved[936];
}__attribute__((packed, aligned (4)));

struct ipr_supported_device {
	__be16 data_length;
	u8 reserved;
	u8 num_records;
	struct ipr_std_inq_vpids vpids;
	u8 reserved2[16];
}__attribute__((packed, aligned (4)));

/* Command packet structure */
struct ipr_cmd_pkt {
	__be16 reserved;		/* Reserved by IOA */
	u8 request_type;
#define IPR_RQTYPE_SCSICDB		0x00
#define IPR_RQTYPE_IOACMD		0x01
#define IPR_RQTYPE_HCAM			0x02

	u8 luntar_luntrn;

	u8 flags_hi;
#define IPR_FLAGS_HI_WRITE_NOT_READ		0x80
#define IPR_FLAGS_HI_NO_ULEN_CHK		0x20
#define IPR_FLAGS_HI_SYNC_OVERRIDE		0x10
#define IPR_FLAGS_HI_SYNC_COMPLETE		0x08
#define IPR_FLAGS_HI_NO_LINK_DESC		0x04

	u8 flags_lo;
#define IPR_FLAGS_LO_ALIGNED_BFR		0x20
#define IPR_FLAGS_LO_DELAY_AFTER_RST	0x10
#define IPR_FLAGS_LO_UNTAGGED_TASK		0x00
#define IPR_FLAGS_LO_SIMPLE_TASK		0x02
#define IPR_FLAGS_LO_ORDERED_TASK		0x04
#define IPR_FLAGS_LO_HEAD_OF_Q_TASK		0x06
#define IPR_FLAGS_LO_ACA_TASK			0x08

	u8 cdb[16];
	__be16 timeout;
}__attribute__ ((packed, aligned(4)));

/* IOA Request Control Block    128 bytes  */
struct ipr_ioarcb {
	__be32 ioarcb_host_pci_addr;
	__be32 reserved;
	__be32 res_handle;
	__be32 host_response_handle;
	__be32 reserved1;
	__be32 reserved2;
	__be32 reserved3;

	__be32 write_data_transfer_length;
	__be32 read_data_transfer_length;
	__be32 write_ioadl_addr;
	__be32 write_ioadl_len;
	__be32 read_ioadl_addr;
	__be32 read_ioadl_len;

	__be32 ioasa_host_pci_addr;
	__be16 ioasa_len;
	__be16 reserved4;

	struct ipr_cmd_pkt cmd_pkt;

	__be32 add_cmd_parms_len;
	__be32 add_cmd_parms[10];
}__attribute__((packed, aligned (4)));

struct ipr_ioadl_desc {
	__be32 flags_and_data_len;
#define IPR_IOADL_FLAGS_MASK		0xff000000
#define IPR_IOADL_GET_FLAGS(x) (be32_to_cpu(x) & IPR_IOADL_FLAGS_MASK)
#define IPR_IOADL_DATA_LEN_MASK		0x00ffffff
#define IPR_IOADL_GET_DATA_LEN(x) (be32_to_cpu(x) & IPR_IOADL_DATA_LEN_MASK)
#define IPR_IOADL_FLAGS_READ		0x48000000
#define IPR_IOADL_FLAGS_READ_LAST	0x49000000
#define IPR_IOADL_FLAGS_WRITE		0x68000000
#define IPR_IOADL_FLAGS_WRITE_LAST	0x69000000
#define IPR_IOADL_FLAGS_LAST		0x01000000

	__be32 address;
}__attribute__((packed, aligned (8)));

struct ipr_ioasa_vset {
	__be32 failing_lba_hi;
	__be32 failing_lba_lo;
	__be32 ioa_data[22];
}__attribute__((packed, aligned (4)));

struct ipr_ioasa_af_dasd {
	__be32 failing_lba;
}__attribute__((packed, aligned (4)));

struct ipr_ioasa_gpdd {
	u8 end_state;
	u8 bus_phase;
	__be16 reserved;
	__be32 ioa_data[23];
}__attribute__((packed, aligned (4)));

struct ipr_ioasa_raw {
	__be32 ioa_data[24];
}__attribute__((packed, aligned (4)));

struct ipr_ioasa {
	__be32 ioasc;
#define IPR_IOASC_SENSE_KEY(ioasc) ((ioasc) >> 24)
#define IPR_IOASC_SENSE_CODE(ioasc) (((ioasc) & 0x00ff0000) >> 16)
#define IPR_IOASC_SENSE_QUAL(ioasc) (((ioasc) & 0x0000ff00) >> 8)
#define IPR_IOASC_SENSE_STATUS(ioasc) ((ioasc) & 0x000000ff)

	__be16 ret_stat_len;	/* Length of the returned IOASA */

	__be16 avail_stat_len;	/* Total Length of status available. */

	__be32 residual_data_len;	/* number of bytes in the host data */
	/* buffers that were not used by the IOARCB command. */

	__be32 ilid;
#define IPR_NO_ILID			0
#define IPR_DRIVER_ILID		0xffffffff

	__be32 fd_ioasc;

	__be32 fd_phys_locator;

	__be32 fd_res_handle;

	__be32 ioasc_specific;	/* status code specific field */
#define IPR_IOASC_SPECIFIC_MASK		0x00ffffff
#define IPR_FIELD_POINTER_VALID		(0x80000000 >> 8)
#define IPR_FIELD_POINTER_MASK		0x0000ffff

	union {
		struct ipr_ioasa_vset vset;
		struct ipr_ioasa_af_dasd dasd;
		struct ipr_ioasa_gpdd gpdd;
		struct ipr_ioasa_raw raw;
	} u;
}__attribute__((packed, aligned (4)));

struct ipr_mode_parm_hdr {
	u8 length;
	u8 medium_type;
	u8 device_spec_parms;
	u8 block_desc_len;
}__attribute__((packed));

struct ipr_mode_pages {
	struct ipr_mode_parm_hdr hdr;
	u8 data[255 - sizeof(struct ipr_mode_parm_hdr)];
}__attribute__((packed));

struct ipr_mode_page_hdr {
	u8 ps_page_code;
#define IPR_MODE_PAGE_PS	0x80
#define IPR_GET_MODE_PAGE_CODE(hdr) ((hdr)->ps_page_code & 0x3F)
	u8 page_length;
}__attribute__ ((packed));

struct ipr_dev_bus_entry {
	struct ipr_res_addr res_addr;
	u8 flags;
#define IPR_SCSI_ATTR_ENABLE_QAS			0x80
#define IPR_SCSI_ATTR_DISABLE_QAS			0x40
#define IPR_SCSI_ATTR_QAS_MASK				0xC0
#define IPR_SCSI_ATTR_ENABLE_TM				0x20
#define IPR_SCSI_ATTR_NO_TERM_PWR			0x10
#define IPR_SCSI_ATTR_TM_SUPPORTED			0x08
#define IPR_SCSI_ATTR_LVD_TO_SE_NOT_ALLOWED	0x04

	u8 scsi_id;
	u8 bus_width;
	u8 extended_reset_delay;
#define IPR_EXTENDED_RESET_DELAY	7

	__be32 max_xfer_rate;

	u8 spinup_delay;
	u8 reserved3;
	__be16 reserved4;
}__attribute__((packed, aligned (4)));

struct ipr_mode_page28 {
	struct ipr_mode_page_hdr hdr;
	u8 num_entries;
	u8 entry_length;
	struct ipr_dev_bus_entry bus[0];
}__attribute__((packed));

struct ipr_ioa_vpd {
	struct ipr_std_inq_data std_inq_data;
	u8 ascii_part_num[12];
	u8 reserved[40];
	u8 ascii_plant_code[4];
}__attribute__((packed));

struct ipr_inquiry_page3 {
	u8 peri_qual_dev_type;
	u8 page_code;
	u8 reserved1;
	u8 page_length;
	u8 ascii_len;
	u8 reserved2[3];
	u8 load_id[4];
	u8 major_release;
	u8 card_type;
	u8 minor_release[2];
	u8 ptf_number[4];
	u8 patch_number[4];
}__attribute__((packed));

struct ipr_hostrcb_device_data_entry {
	struct ipr_vpd vpd;
	struct ipr_res_addr dev_res_addr;
	struct ipr_vpd new_vpd;
	struct ipr_vpd ioa_last_with_dev_vpd;
	struct ipr_vpd cfc_last_with_dev_vpd;
	__be32 ioa_data[5];
}__attribute__((packed, aligned (4)));

struct ipr_hostrcb_array_data_entry {
	struct ipr_vpd vpd;
	struct ipr_res_addr expected_dev_res_addr;
	struct ipr_res_addr dev_res_addr;
}__attribute__((packed, aligned (4)));

struct ipr_hostrcb_type_ff_error {
	__be32 ioa_data[246];
}__attribute__((packed, aligned (4)));

struct ipr_hostrcb_type_01_error {
	__be32 seek_counter;
	__be32 read_counter;
	u8 sense_data[32];
	__be32 ioa_data[236];
}__attribute__((packed, aligned (4)));

struct ipr_hostrcb_type_02_error {
	struct ipr_vpd ioa_vpd;
	struct ipr_vpd cfc_vpd;
	struct ipr_vpd ioa_last_attached_to_cfc_vpd;
	struct ipr_vpd cfc_last_attached_to_ioa_vpd;
	__be32 ioa_data[3];
}__attribute__((packed, aligned (4)));

struct ipr_hostrcb_type_03_error {
	struct ipr_vpd ioa_vpd;
	struct ipr_vpd cfc_vpd;
	__be32 errors_detected;
	__be32 errors_logged;
	u8 ioa_data[12];
	struct ipr_hostrcb_device_data_entry dev[3];
}__attribute__((packed, aligned (4)));

struct ipr_hostrcb_type_04_error {
	struct ipr_vpd ioa_vpd;
	struct ipr_vpd cfc_vpd;
	u8 ioa_data[12];
	struct ipr_hostrcb_array_data_entry array_member[10];
	__be32 exposed_mode_adn;
	__be32 array_id;
	struct ipr_vpd incomp_dev_vpd;
	__be32 ioa_data2;
	struct ipr_hostrcb_array_data_entry array_member2[8];
	struct ipr_res_addr last_func_vset_res_addr;
	u8 vset_serial_num[IPR_SERIAL_NUM_LEN];
	u8 protection_level[8];
}__attribute__((packed, aligned (4)));

struct ipr_hostrcb_error {
	__be32 failing_dev_ioasc;
	struct ipr_res_addr failing_dev_res_addr;
	__be32 failing_dev_res_handle;
	__be32 prc;
	union {
		struct ipr_hostrcb_type_ff_error type_ff_error;
		struct ipr_hostrcb_type_01_error type_01_error;
		struct ipr_hostrcb_type_02_error type_02_error;
		struct ipr_hostrcb_type_03_error type_03_error;
		struct ipr_hostrcb_type_04_error type_04_error;
	} u;
}__attribute__((packed, aligned (4)));

struct ipr_hostrcb_raw {
	__be32 data[sizeof(struct ipr_hostrcb_error)/sizeof(__be32)];
}__attribute__((packed, aligned (4)));

struct ipr_hcam {
	u8 op_code;
#define IPR_HOST_RCB_OP_CODE_CONFIG_CHANGE			0xE1
#define IPR_HOST_RCB_OP_CODE_LOG_DATA				0xE2

	u8 notify_type;
#define IPR_HOST_RCB_NOTIF_TYPE_EXISTING_CHANGED	0x00
#define IPR_HOST_RCB_NOTIF_TYPE_NEW_ENTRY			0x01
#define IPR_HOST_RCB_NOTIF_TYPE_REM_ENTRY			0x02
#define IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY		0x10
#define IPR_HOST_RCB_NOTIF_TYPE_INFORMATION_ENTRY	0x11

	u8 notifications_lost;
#define IPR_HOST_RCB_NO_NOTIFICATIONS_LOST			0
#define IPR_HOST_RCB_NOTIFICATIONS_LOST				0x80

	u8 flags;
#define IPR_HOSTRCB_INTERNAL_OPER	0x80
#define IPR_HOSTRCB_ERR_RESP_SENT	0x40

	u8 overlay_id;
#define IPR_HOST_RCB_OVERLAY_ID_1				0x01
#define IPR_HOST_RCB_OVERLAY_ID_2				0x02
#define IPR_HOST_RCB_OVERLAY_ID_3				0x03
#define IPR_HOST_RCB_OVERLAY_ID_4				0x04
#define IPR_HOST_RCB_OVERLAY_ID_6				0x06
#define IPR_HOST_RCB_OVERLAY_ID_DEFAULT			0xFF

	u8 reserved1[3];
	__be32 ilid;
	__be32 time_since_last_ioa_reset;
	__be32 reserved2;
	__be32 length;

	union {
		struct ipr_hostrcb_error error;
		struct ipr_hostrcb_cfg_ch_not ccn;
		struct ipr_hostrcb_raw raw;
	} u;
}__attribute__((packed, aligned (4)));

struct ipr_hostrcb {
	struct ipr_hcam hcam;
	dma_addr_t hostrcb_dma;
	struct list_head queue;
};

/* IPR smart dump table structures */
struct ipr_sdt_entry {
	__be32 bar_str_offset;
	__be32 end_offset;
	u8 entry_byte;
	u8 reserved[3];

	u8 flags;
#define IPR_SDT_ENDIAN		0x80
#define IPR_SDT_VALID_ENTRY	0x20

	u8 resv;
	__be16 priority;
}__attribute__((packed, aligned (4)));

struct ipr_sdt_header {
	__be32 state;
	__be32 num_entries;
	__be32 num_entries_used;
	__be32 dump_size;
}__attribute__((packed, aligned (4)));

struct ipr_sdt {
	struct ipr_sdt_header hdr;
	struct ipr_sdt_entry entry[IPR_NUM_SDT_ENTRIES];
}__attribute__((packed, aligned (4)));

struct ipr_uc_sdt {
	struct ipr_sdt_header hdr;
	struct ipr_sdt_entry entry[1];
}__attribute__((packed, aligned (4)));

/*
 * Driver types
 */
struct ipr_bus_attributes {
	u8 bus;
	u8 qas_enabled;
	u8 bus_width;
	u8 reserved;
	u32 max_xfer_rate;
};

struct ipr_resource_entry {
	struct ipr_config_table_entry cfgte;
	u8 needs_sync_complete:1;
	u8 in_erp:1;
	u8 add_to_ml:1;
	u8 del_from_ml:1;
	u8 resetting_device:1;

	struct scsi_device *sdev;
	struct list_head queue;
};

struct ipr_resource_hdr {
	u16 num_entries;
	u16 reserved;
};

struct ipr_resource_table {
	struct ipr_resource_hdr hdr;
	struct ipr_resource_entry dev[IPR_MAX_PHYSICAL_DEVS];
};

struct ipr_misc_cbs {
	struct ipr_ioa_vpd ioa_vpd;
	struct ipr_inquiry_page3 page3_data;
	struct ipr_mode_pages mode_pages;
	struct ipr_supported_device supp_dev;
};

struct ipr_interrupt_offsets {
	unsigned long set_interrupt_mask_reg;
	unsigned long clr_interrupt_mask_reg;
	unsigned long sense_interrupt_mask_reg;
	unsigned long clr_interrupt_reg;

	unsigned long sense_interrupt_reg;
	unsigned long ioarrin_reg;
	unsigned long sense_uproc_interrupt_reg;
	unsigned long set_uproc_interrupt_reg;
	unsigned long clr_uproc_interrupt_reg;
};

struct ipr_interrupts {
	void __iomem *set_interrupt_mask_reg;
	void __iomem *clr_interrupt_mask_reg;
	void __iomem *sense_interrupt_mask_reg;
	void __iomem *clr_interrupt_reg;

	void __iomem *sense_interrupt_reg;
	void __iomem *ioarrin_reg;
	void __iomem *sense_uproc_interrupt_reg;
	void __iomem *set_uproc_interrupt_reg;
	void __iomem *clr_uproc_interrupt_reg;
};

struct ipr_chip_cfg_t {
	u32 mailbox;
	u8 cache_line_size;
	struct ipr_interrupt_offsets regs;
};

struct ipr_chip_t {
	u16 vendor;
	u16 device;
	const struct ipr_chip_cfg_t *cfg;
};

enum ipr_shutdown_type {
	IPR_SHUTDOWN_NORMAL = 0x00,
	IPR_SHUTDOWN_PREPARE_FOR_NORMAL = 0x40,
	IPR_SHUTDOWN_ABBREV = 0x80,
	IPR_SHUTDOWN_NONE = 0x100
};

struct ipr_trace_entry {
	u32 time;

	u8 op_code;
	u8 type;
#define IPR_TRACE_START			0x00
#define IPR_TRACE_FINISH		0xff
	u16 cmd_index;

	__be32 res_handle;
	union {
		u32 ioasc;
		u32 add_data;
		u32 res_addr;
	} u;
};

struct ipr_sglist {
	u32 order;
	u32 num_sg;
	u32 buffer_len;
	struct scatterlist scatterlist[1];
};

enum ipr_sdt_state {
	INACTIVE,
	WAIT_FOR_DUMP,
	GET_DUMP,
	ABORT_DUMP,
	DUMP_OBTAINED
};

/* Per-controller data */
struct ipr_ioa_cfg {
	char eye_catcher[8];
#define IPR_EYECATCHER			"iprcfg"

	struct list_head queue;

	u8 allow_interrupts:1;
	u8 in_reset_reload:1;
	u8 in_ioa_bringdown:1;
	u8 ioa_unit_checked:1;
	u8 ioa_is_dead:1;
	u8 dump_taken:1;
	u8 allow_cmds:1;
	u8 allow_ml_add_del:1;

	u16 type; /* CCIN of the card */

	u8 log_level;
#define IPR_MAX_LOG_LEVEL			4
#define IPR_DEFAULT_LOG_LEVEL		2

#define IPR_NUM_TRACE_INDEX_BITS	8
#define IPR_NUM_TRACE_ENTRIES		(1 << IPR_NUM_TRACE_INDEX_BITS)
#define IPR_TRACE_SIZE	(sizeof(struct ipr_trace_entry) * IPR_NUM_TRACE_ENTRIES)
	char trace_start[8];
#define IPR_TRACE_START_LABEL			"trace"
	struct ipr_trace_entry *trace;
	u32 trace_index:IPR_NUM_TRACE_INDEX_BITS;

	/*
	 * Queue for free command blocks
	 */
	char ipr_free_label[8];
#define IPR_FREEQ_LABEL			"free-q"
	struct list_head free_q;

	/*
	 * Queue for command blocks outstanding to the adapter
	 */
	char ipr_pending_label[8];
#define IPR_PENDQ_LABEL			"pend-q"
	struct list_head pending_q;

	char cfg_table_start[8];
#define IPR_CFG_TBL_START		"cfg"
	struct ipr_config_table *cfg_table;
	dma_addr_t cfg_table_dma;

	char resource_table_label[8];
#define IPR_RES_TABLE_LABEL		"res_tbl"
	struct ipr_resource_entry *res_entries;
	struct list_head free_res_q;
	struct list_head used_res_q;

	char ipr_hcam_label[8];
#define IPR_HCAM_LABEL			"hcams"
	struct ipr_hostrcb *hostrcb[IPR_NUM_HCAMS];
	dma_addr_t hostrcb_dma[IPR_NUM_HCAMS];
	struct list_head hostrcb_free_q;
	struct list_head hostrcb_pending_q;

	__be32 *host_rrq;
	dma_addr_t host_rrq_dma;
#define IPR_HRRQ_REQ_RESP_HANDLE_MASK	0xfffffffc
#define IPR_HRRQ_RESP_BIT_SET			0x00000002
#define IPR_HRRQ_TOGGLE_BIT				0x00000001
#define IPR_HRRQ_REQ_RESP_HANDLE_SHIFT	2
	volatile __be32 *hrrq_start;
	volatile __be32 *hrrq_end;
	volatile __be32 *hrrq_curr;
	volatile u32 toggle_bit;

	struct ipr_bus_attributes bus_attr[IPR_MAX_NUM_BUSES];

	const struct ipr_chip_cfg_t *chip_cfg;

	void __iomem *hdw_dma_regs;	/* iomapped PCI memory space */
	unsigned long hdw_dma_regs_pci;	/* raw PCI memory space */
	void __iomem *ioa_mailbox;
	struct ipr_interrupts regs;

	u16 saved_pcix_cmd_reg;
	u16 reset_retries;

	u32 errors_logged;

	struct Scsi_Host *host;
	struct pci_dev *pdev;
	struct ipr_sglist *ucode_sglist;
	struct ipr_mode_pages *saved_mode_pages;
	u8 saved_mode_page_len;

	struct work_struct work_q;

	wait_queue_head_t reset_wait_q;

	struct ipr_dump *dump;
	enum ipr_sdt_state sdt_state;

	struct ipr_misc_cbs *vpd_cbs;
	dma_addr_t vpd_cbs_dma;

	struct pci_pool *ipr_cmd_pool;

	struct ipr_cmnd *reset_cmd;

	char ipr_cmd_label[8];
#define IPR_CMD_LABEL		"ipr_cmnd"
	struct ipr_cmnd *ipr_cmnd_list[IPR_NUM_CMD_BLKS];
	u32 ipr_cmnd_list_dma[IPR_NUM_CMD_BLKS];
};

struct ipr_cmnd {
	struct ipr_ioarcb ioarcb;
	struct ipr_ioasa ioasa;
	struct ipr_ioadl_desc ioadl[IPR_NUM_IOADL_ENTRIES];
	struct list_head queue;
	struct scsi_cmnd *scsi_cmd;
	struct completion completion;
	struct timer_list timer;
	void (*done) (struct ipr_cmnd *);
	int (*job_step) (struct ipr_cmnd *);
	u16 cmd_index;
	u8 sense_buffer[SCSI_SENSE_BUFFERSIZE];
	dma_addr_t sense_buffer_dma;
	unsigned short dma_use_sg;
	dma_addr_t dma_handle;
	struct ipr_cmnd *sibling;
	union {
		enum ipr_shutdown_type shutdown_type;
		struct ipr_hostrcb *hostrcb;
		unsigned long time_left;
		unsigned long scratch;
		struct ipr_resource_entry *res;
		struct scsi_device *sdev;
	} u;

	struct ipr_ioa_cfg *ioa_cfg;
};

struct ipr_ses_table_entry {
	char product_id[17];
	char compare_product_id_byte[17];
	u32 max_bus_speed_limit;	/* MB/sec limit for this backplane */
};

struct ipr_dump_header {
	u32 eye_catcher;
#define IPR_DUMP_EYE_CATCHER		0xC5D4E3F2
	u32 len;
	u32 num_entries;
	u32 first_entry_offset;
	u32 status;
#define IPR_DUMP_STATUS_SUCCESS			0
#define IPR_DUMP_STATUS_QUAL_SUCCESS		2
#define IPR_DUMP_STATUS_FAILED			0xffffffff
	u32 os;
#define IPR_DUMP_OS_LINUX	0x4C4E5558
	u32 driver_name;
#define IPR_DUMP_DRIVER_NAME	0x49505232
}__attribute__((packed, aligned (4)));

struct ipr_dump_entry_header {
	u32 eye_catcher;
#define IPR_DUMP_EYE_CATCHER		0xC5D4E3F2
	u32 len;
	u32 num_elems;
	u32 offset;
	u32 data_type;
#define IPR_DUMP_DATA_TYPE_ASCII	0x41534349
#define IPR_DUMP_DATA_TYPE_BINARY	0x42494E41
	u32 id;
#define IPR_DUMP_IOA_DUMP_ID		0x494F4131
#define IPR_DUMP_LOCATION_ID		0x4C4F4341
#define IPR_DUMP_TRACE_ID		0x54524143
#define IPR_DUMP_DRIVER_VERSION_ID	0x44525652
#define IPR_DUMP_DRIVER_TYPE_ID	0x54595045
#define IPR_DUMP_IOA_CTRL_BLK		0x494F4342
#define IPR_DUMP_PEND_OPS		0x414F5053
	u32 status;
}__attribute__((packed, aligned (4)));

struct ipr_dump_location_entry {
	struct ipr_dump_entry_header hdr;
	u8 location[BUS_ID_SIZE];
}__attribute__((packed));

struct ipr_dump_trace_entry {
	struct ipr_dump_entry_header hdr;
	u32 trace[IPR_TRACE_SIZE / sizeof(u32)];
}__attribute__((packed, aligned (4)));

struct ipr_dump_version_entry {
	struct ipr_dump_entry_header hdr;
	u8 version[sizeof(IPR_DRIVER_VERSION)];
};

struct ipr_dump_ioa_type_entry {
	struct ipr_dump_entry_header hdr;
	u32 type;
	u32 fw_version;
};

struct ipr_driver_dump {
	struct ipr_dump_header hdr;
	struct ipr_dump_version_entry version_entry;
	struct ipr_dump_location_entry location_entry;
	struct ipr_dump_ioa_type_entry ioa_type_entry;
	struct ipr_dump_trace_entry trace_entry;
}__attribute__((packed));

struct ipr_ioa_dump {
	struct ipr_dump_entry_header hdr;
	struct ipr_sdt sdt;
	__be32 *ioa_data[IPR_MAX_NUM_DUMP_PAGES];
	u32 reserved;
	u32 next_page_index;
	u32 page_offset;
	u32 format;
#define IPR_SDT_FMT2		2
#define IPR_SDT_UNKNOWN		3
}__attribute__((packed, aligned (4)));

struct ipr_dump {
	struct kref kref;
	struct ipr_ioa_cfg *ioa_cfg;
	struct ipr_driver_dump driver_dump;
	struct ipr_ioa_dump ioa_dump;
};

struct ipr_error_table_t {
	u32 ioasc;
	int log_ioasa;
	int log_hcam;
	char *error;
};

struct ipr_software_inq_lid_info {
	__be32 load_id;
	__be32 timestamp[3];
}__attribute__((packed, aligned (4)));

struct ipr_ucode_image_header {
	__be32 header_length;
	__be32 lid_table_offset;
	u8 major_release;
	u8 card_type;
	u8 minor_release[2];
	u8 reserved[20];
	char eyecatcher[16];
	__be32 num_lids;
	struct ipr_software_inq_lid_info lid[1];
}__attribute__((packed, aligned (4)));

/*
 * Macros
 */
#if IPR_DEBUG
#define IPR_DBG_CMD(CMD) do { CMD; } while (0)
#else
#define IPR_DBG_CMD(CMD)
#endif

#ifdef CONFIG_SCSI_IPR_TRACE
#define ipr_create_trace_file(kobj, attr) sysfs_create_bin_file(kobj, attr)
#define ipr_remove_trace_file(kobj, attr) sysfs_remove_bin_file(kobj, attr)
#else
#define ipr_create_trace_file(kobj, attr) 0
#define ipr_remove_trace_file(kobj, attr) do { } while(0)
#endif

#ifdef CONFIG_SCSI_IPR_DUMP
#define ipr_create_dump_file(kobj, attr) sysfs_create_bin_file(kobj, attr)
#define ipr_remove_dump_file(kobj, attr) sysfs_remove_bin_file(kobj, attr)
#else
#define ipr_create_dump_file(kobj, attr) 0
#define ipr_remove_dump_file(kobj, attr) do { } while(0)
#endif

/*
 * Error logging macros
 */
#define ipr_err(...) printk(KERN_ERR IPR_NAME ": "__VA_ARGS__)
#define ipr_info(...) printk(KERN_INFO IPR_NAME ": "__VA_ARGS__)
#define ipr_crit(...) printk(KERN_CRIT IPR_NAME ": "__VA_ARGS__)
#define ipr_warn(...) printk(KERN_WARNING IPR_NAME": "__VA_ARGS__)
#define ipr_dbg(...) IPR_DBG_CMD(printk(KERN_INFO IPR_NAME ": "__VA_ARGS__))

#define ipr_sdev_printk(level, sdev, fmt, args...) \
	sdev_printk(level, sdev, fmt, ## args)

#define ipr_sdev_err(sdev, fmt, ...) \
	ipr_sdev_printk(KERN_ERR, sdev, fmt, ##__VA_ARGS__)

#define ipr_sdev_info(sdev, fmt, ...) \
	ipr_sdev_printk(KERN_INFO, sdev, fmt, ##__VA_ARGS__)

#define ipr_sdev_dbg(sdev, fmt, ...) \
	IPR_DBG_CMD(ipr_sdev_printk(KERN_INFO, sdev, fmt, ##__VA_ARGS__))

#define ipr_res_printk(level, ioa_cfg, res, fmt, ...) \
	printk(level IPR_NAME ": %d:%d:%d:%d: " fmt, ioa_cfg->host->host_no, \
		res.bus, res.target, res.lun, ##__VA_ARGS__)

#define ipr_res_err(ioa_cfg, res, fmt, ...) \
	ipr_res_printk(KERN_ERR, ioa_cfg, res, fmt, ##__VA_ARGS__)
#define ipr_res_dbg(ioa_cfg, res, fmt, ...) \
	IPR_DBG_CMD(ipr_res_printk(KERN_INFO, ioa_cfg, res, fmt, ##__VA_ARGS__))

#define ipr_trace ipr_dbg("%s: %s: Line: %d\n",\
	__FILE__, __FUNCTION__, __LINE__)

#if IPR_DBG_TRACE
#define ENTER printk(KERN_INFO IPR_NAME": Entering %s\n", __FUNCTION__)
#define LEAVE printk(KERN_INFO IPR_NAME": Leaving %s\n", __FUNCTION__)
#else
#define ENTER
#define LEAVE
#endif

#define ipr_err_separator \
ipr_err("----------------------------------------------------------\n")


/*
 * Inlines
 */

/**
 * ipr_is_ioa_resource - Determine if a resource is the IOA
 * @res:	resource entry struct
 *
 * Return value:
 * 	1 if IOA / 0 if not IOA
 **/
static inline int ipr_is_ioa_resource(struct ipr_resource_entry *res)
{
	return (res->cfgte.flags & IPR_IS_IOA_RESOURCE) ? 1 : 0;
}

/**
 * ipr_is_af_dasd_device - Determine if a resource is an AF DASD
 * @res:	resource entry struct
 *
 * Return value:
 * 	1 if AF DASD / 0 if not AF DASD
 **/
static inline int ipr_is_af_dasd_device(struct ipr_resource_entry *res)
{
	if (IPR_IS_DASD_DEVICE(res->cfgte.std_inq_data) &&
	    !ipr_is_ioa_resource(res) &&
	    IPR_RES_SUBTYPE(res) == IPR_SUBTYPE_AF_DASD)
		return 1;
	else
		return 0;
}

/**
 * ipr_is_vset_device - Determine if a resource is a VSET
 * @res:	resource entry struct
 *
 * Return value:
 * 	1 if VSET / 0 if not VSET
 **/
static inline int ipr_is_vset_device(struct ipr_resource_entry *res)
{
	if (IPR_IS_DASD_DEVICE(res->cfgte.std_inq_data) &&
	    !ipr_is_ioa_resource(res) &&
	    IPR_RES_SUBTYPE(res) == IPR_SUBTYPE_VOLUME_SET)
		return 1;
	else
		return 0;
}

/**
 * ipr_is_gscsi - Determine if a resource is a generic scsi resource
 * @res:	resource entry struct
 *
 * Return value:
 * 	1 if GSCSI / 0 if not GSCSI
 **/
static inline int ipr_is_gscsi(struct ipr_resource_entry *res)
{
	if (!ipr_is_ioa_resource(res) &&
	    IPR_RES_SUBTYPE(res) == IPR_SUBTYPE_GENERIC_SCSI)
		return 1;
	else
		return 0;
}

/**
 * ipr_is_device - Determine if resource address is that of a device
 * @res_addr:	resource address struct
 *
 * Return value:
 * 	1 if AF / 0 if not AF
 **/
static inline int ipr_is_device(struct ipr_res_addr *res_addr)
{
	if ((res_addr->bus < IPR_MAX_NUM_BUSES) &&
	    (res_addr->target < IPR_MAX_NUM_TARGETS_PER_BUS))
		return 1;

	return 0;
}

/**
 * ipr_sdt_is_fmt2 - Determine if a SDT address is in format 2
 * @sdt_word:	SDT address
 *
 * Return value:
 * 	1 if format 2 / 0 if not
 **/
static inline int ipr_sdt_is_fmt2(u32 sdt_word)
{
	u32 bar_sel = IPR_GET_FMT2_BAR_SEL(sdt_word);

	switch (bar_sel) {
	case IPR_SDT_FMT2_BAR0_SEL:
	case IPR_SDT_FMT2_BAR1_SEL:
	case IPR_SDT_FMT2_BAR2_SEL:
	case IPR_SDT_FMT2_BAR3_SEL:
	case IPR_SDT_FMT2_BAR4_SEL:
	case IPR_SDT_FMT2_BAR5_SEL:
	case IPR_SDT_FMT2_EXP_ROM_SEL:
		return 1;
	};

	return 0;
}

#endif