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author	Thorsten Leemhuis <fedora@leemhuis.info>	2020-08-05 08:38:01 +0200
committer	Thorsten Leemhuis <fedora@leemhuis.info>	2020-08-05 08:38:01 +0200
commit	d8b1d4104de663bacffe18cf79ebf37fed8aac78 (patch)
tree	2aceb7beb9cb45d90854d2d8e36ce108864fca46 /configs/fedora/generic/arm/aarch64/CONFIG_ARM64_FORCE_52BIT
parent	1b44a8c9fe0e71a8d14c49e78d9857f49d518a09 (diff)
parent	9ab9ea2db0b13375d3d7114d5c82eb298a118740 (diff)
download	kernel-d8b1d4104de663bacffe18cf79ebf37fed8aac78.tar.gz kernel-d8b1d4104de663bacffe18cf79ebf37fed8aac78.tar.xz kernel-d8b1d4104de663bacffe18cf79ebf37fed8aac78.zip

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Diffstat (limited to 'configs/fedora/generic/arm/aarch64/CONFIG_ARM64_FORCE_52BIT')

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configs/fedora/generic/arm/aarch64/CONFIG_ARM64_FORCE_52BIT

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/* * * linux/drivers/s390/scsi/zfcp_def.h * * FCP adapter driver for IBM eServer zSeries * * (C) Copyright IBM Corp. 2002, 2004 * * Author(s): Martin Peschke <mpeschke@de.ibm.com> * Raimund Schroeder <raimund.schroeder@de.ibm.com> * Aron Zeh * Wolfgang Taphorn * Stefan Bader <stefan.bader@de.ibm.com> * Heiko Carstens <heiko.carstens@de.ibm.com> * Andreas Herrmann <aherrman@de.ibm.com> * Volker Sameske <sameske@de.ibm.com> * * 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, 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., 675 Mass Ave, Cambridge, MA 02139, USA. */ #ifndef ZFCP_DEF_H #define ZFCP_DEF_H #define ZFCP_DEF_REVISION "$Revision: 1.111 $" /*************************** INCLUDES *****************************************/ #include <linux/init.h> #include <linux/moduleparam.h> #include <linux/miscdevice.h> #include <linux/major.h> #include <linux/blkdev.h> #include <linux/delay.h> #include <linux/timer.h> #include <scsi/scsi.h> #include <scsi/scsi_tcq.h> #include <scsi/scsi_cmnd.h> #include <scsi/scsi_device.h> #include <scsi/scsi_host.h> #include <scsi/scsi_transport.h> #include <scsi/scsi_transport_fc.h> #include "../../fc4/fc.h" #include "zfcp_fsf.h" #include <asm/ccwdev.h> #include <asm/qdio.h> #include <asm/debug.h> #include <asm/ebcdic.h> #include <linux/mempool.h> #include <linux/syscalls.h> #include <linux/ioctl.h> /************************ DEBUG FLAGS *****************************************/ #define ZFCP_PRINT_FLAGS /********************* GENERAL DEFINES *********************************/ /* zfcp version number, it consists of major, minor, and patch-level number */ #define ZFCP_VERSION "4.3.0" /** * zfcp_sg_to_address - determine kernel address from struct scatterlist * @list: struct scatterlist * Return: kernel address */ static inline void * zfcp_sg_to_address(struct scatterlist *list) { return (void *) (page_address(list->page) + list->offset); } /** * zfcp_address_to_sg - set up struct scatterlist from kernel address * @address: kernel address * @list: struct scatterlist */ static inline void zfcp_address_to_sg(void *address, struct scatterlist *list) { list->page = virt_to_page(address); list->offset = ((unsigned long) address) & (PAGE_SIZE - 1); } /********************* SCSI SPECIFIC DEFINES *********************************/ /* 32 bit for SCSI ID and LUN as long as the SCSI stack uses this type */ typedef u32 scsi_id_t; typedef u32 scsi_lun_t; #define ZFCP_ERP_SCSI_LOW_MEM_TIMEOUT (100*HZ) #define ZFCP_SCSI_ER_TIMEOUT (100*HZ) /********************* CIO/QDIO SPECIFIC DEFINES *****************************/ /* Adapter Identification Parameters */ #define ZFCP_CONTROL_UNIT_TYPE 0x1731 #define ZFCP_CONTROL_UNIT_MODEL 0x03 #define ZFCP_DEVICE_TYPE 0x1732 #define ZFCP_DEVICE_MODEL 0x03 #define ZFCP_DEVICE_MODEL_PRIV 0x04 /* allow as many chained SBALs as are supported by hardware */ #define ZFCP_MAX_SBALS_PER_REQ FSF_MAX_SBALS_PER_REQ #define ZFCP_MAX_SBALS_PER_CT_REQ FSF_MAX_SBALS_PER_REQ #define ZFCP_MAX_SBALS_PER_ELS_REQ FSF_MAX_SBALS_PER_ELS_REQ /* DMQ bug workaround: don't use last SBALE */ #define ZFCP_MAX_SBALES_PER_SBAL (QDIO_MAX_ELEMENTS_PER_BUFFER - 1) /* index of last SBALE (with respect to DMQ bug workaround) */ #define ZFCP_LAST_SBALE_PER_SBAL (ZFCP_MAX_SBALES_PER_SBAL - 1) /* max. number of (data buffer) SBALEs in largest SBAL chain */ #define ZFCP_MAX_SBALES_PER_REQ \ (ZFCP_MAX_SBALS_PER_REQ * ZFCP_MAX_SBALES_PER_SBAL - 2) /* request ID + QTCB in SBALE 0 + 1 of first SBAL in chain */ /* FIXME(tune): free space should be one max. SBAL chain plus what? */ #define ZFCP_QDIO_PCI_INTERVAL (QDIO_MAX_BUFFERS_PER_Q \ - (ZFCP_MAX_SBALS_PER_REQ + 4)) #define ZFCP_SBAL_TIMEOUT (5*HZ) #define ZFCP_TYPE2_RECOVERY_TIME (8*HZ) /* queue polling (values in microseconds) */ #define ZFCP_MAX_INPUT_THRESHOLD 5000 /* FIXME: tune */ #define ZFCP_MAX_OUTPUT_THRESHOLD 1000 /* FIXME: tune */ #define ZFCP_MIN_INPUT_THRESHOLD 1 /* ignored by QDIO layer */ #define ZFCP_MIN_OUTPUT_THRESHOLD 1 /* ignored by QDIO layer */ #define QDIO_SCSI_QFMT 1 /* 1 for FSF */ /********************* FSF SPECIFIC DEFINES *********************************/ #define ZFCP_ULP_INFO_VERSION 26 #define ZFCP_QTCB_VERSION FSF_QTCB_CURRENT_VERSION /* ATTENTION: value must not be used by hardware */ #define FSF_QTCB_UNSOLICITED_STATUS 0x6305 #define ZFCP_STATUS_READ_FAILED_THRESHOLD 3 #define ZFCP_STATUS_READS_RECOM FSF_STATUS_READS_RECOM #define ZFCP_EXCHANGE_CONFIG_DATA_RETRIES 6 #define ZFCP_EXCHANGE_CONFIG_DATA_SLEEP 50 /* timeout value for "default timer" for fsf requests */ #define ZFCP_FSF_REQUEST_TIMEOUT (60*HZ); /*************** FIBRE CHANNEL PROTOCOL SPECIFIC DEFINES ********************/ typedef unsigned long long wwn_t; typedef unsigned int fc_id_t; typedef unsigned long long fcp_lun_t; /* data length field may be at variable position in FCP-2 FCP_CMND IU */ typedef unsigned int fcp_dl_t; #define ZFCP_FC_SERVICE_CLASS_DEFAULT FSF_CLASS_3 /* timeout for name-server lookup (in seconds) */ #define ZFCP_NS_GID_PN_TIMEOUT 10 /* largest SCSI command we can process */ /* FCP-2 (FCP_CMND IU) allows up to (255-3+16) */ #define ZFCP_MAX_SCSI_CMND_LENGTH 255 /* maximum number of commands in LUN queue (tagged queueing) */ #define ZFCP_CMND_PER_LUN 32 /* task attribute values in FCP-2 FCP_CMND IU */ #define SIMPLE_Q 0 #define HEAD_OF_Q 1 #define ORDERED_Q 2 #define ACA_Q 4 #define UNTAGGED 5 /* task management flags in FCP-2 FCP_CMND IU */ #define FCP_CLEAR_ACA 0x40 #define FCP_TARGET_RESET 0x20 #define FCP_LOGICAL_UNIT_RESET 0x10 #define FCP_CLEAR_TASK_SET 0x04 #define FCP_ABORT_TASK_SET 0x02 #define FCP_CDB_LENGTH 16 #define ZFCP_DID_MASK 0x00FFFFFF /* FCP(-2) FCP_CMND IU */ struct fcp_cmnd_iu { fcp_lun_t fcp_lun; /* FCP logical unit number */ u8 crn; /* command reference number */ u8 reserved0:5; /* reserved */ u8 task_attribute:3; /* task attribute */ u8 task_management_flags; /* task management flags */ u8 add_fcp_cdb_length:6; /* additional FCP_CDB length */ u8 rddata:1; /* read data */ u8 wddata:1; /* write data */ u8 fcp_cdb[FCP_CDB_LENGTH]; } __attribute__((packed)); /* FCP(-2) FCP_RSP IU */ struct fcp_rsp_iu { u8 reserved0[10]; union { struct { u8 reserved1:3; u8 fcp_conf_req:1; u8 fcp_resid_under:1; u8 fcp_resid_over:1; u8 fcp_sns_len_valid:1; u8 fcp_rsp_len_valid:1; } bits; u8 value; } validity; u8 scsi_status; u32 fcp_resid; u32 fcp_sns_len; u32 fcp_rsp_len; } __attribute__((packed)); #define RSP_CODE_GOOD 0 #define RSP_CODE_LENGTH_MISMATCH 1 #define RSP_CODE_FIELD_INVALID 2 #define RSP_CODE_RO_MISMATCH 3 #define RSP_CODE_TASKMAN_UNSUPP 4 #define RSP_CODE_TASKMAN_FAILED 5 /* see fc-fs */ #define LS_FAN 0x60000000 #define LS_RSCN 0x61040000 struct fcp_rscn_head { u8 command; u8 page_length; /* always 0x04 */ u16 payload_len; } __attribute__((packed)); struct fcp_rscn_element { u8 reserved:2; u8 event_qual:4; u8 addr_format:2; u32 nport_did:24; } __attribute__((packed)); #define ZFCP_PORT_ADDRESS 0x0 #define ZFCP_AREA_ADDRESS 0x1 #define ZFCP_DOMAIN_ADDRESS 0x2 #define ZFCP_FABRIC_ADDRESS 0x3 #define ZFCP_PORTS_RANGE_PORT 0xFFFFFF #define ZFCP_PORTS_RANGE_AREA 0xFFFF00 #define ZFCP_PORTS_RANGE_DOMAIN 0xFF0000 #define ZFCP_PORTS_RANGE_FABRIC 0x000000 #define ZFCP_NO_PORTS_PER_AREA 0x100 #define ZFCP_NO_PORTS_PER_DOMAIN 0x10000 #define ZFCP_NO_PORTS_PER_FABRIC 0x1000000 struct fcp_fan { u32 command; u32 fport_did; wwn_t fport_wwpn; wwn_t fport_wwname; } __attribute__((packed)); /* see fc-ph */ struct fcp_logo { u32 command; u32 nport_did; wwn_t nport_wwpn; } __attribute__((packed)); /* * FC-FS stuff */ #define R_A_TOV 10 /* seconds */ #define ZFCP_ELS_TIMEOUT (2 * R_A_TOV) #define ZFCP_LS_RLS 0x0f #define ZFCP_LS_ADISC 0x52 #define ZFCP_LS_RPS 0x56 #define ZFCP_LS_RSCN 0x61 #define ZFCP_LS_RNID 0x78 struct zfcp_ls_rjt_par { u8 action; u8 reason_code; u8 reason_expl; u8 vendor_unique; } __attribute__ ((packed)); struct zfcp_ls_adisc { u8 code; u8 field[3]; u32 hard_nport_id; u64 wwpn; u64 wwnn; u32 nport_id; } __attribute__ ((packed)); struct zfcp_ls_adisc_acc { u8 code; u8 field[3]; u32 hard_nport_id; u64 wwpn; u64 wwnn; u32 nport_id; } __attribute__ ((packed)); struct zfcp_rc_entry { u8 code; const char *description; }; /* * FC-GS-2 stuff */ #define ZFCP_CT_REVISION 0x01 #define ZFCP_CT_DIRECTORY_SERVICE 0xFC #define ZFCP_CT_NAME_SERVER 0x02 #define ZFCP_CT_SYNCHRONOUS 0x00 #define ZFCP_CT_GID_PN 0x0121 #define ZFCP_CT_MAX_SIZE 0x1020 #define ZFCP_CT_ACCEPT 0x8002 #define ZFCP_CT_REJECT 0x8001 /* * FC-GS-4 stuff */ #define ZFCP_CT_TIMEOUT (3 * R_A_TOV) /***************** S390 DEBUG FEATURE SPECIFIC DEFINES ***********************/ /* debug feature entries per adapter */ #define ZFCP_ERP_DBF_INDEX 1 #define ZFCP_ERP_DBF_AREAS 2 #define ZFCP_ERP_DBF_LENGTH 16 #define ZFCP_ERP_DBF_LEVEL 3 #define ZFCP_ERP_DBF_NAME "zfcperp" #define ZFCP_CMD_DBF_INDEX 2 #define ZFCP_CMD_DBF_AREAS 1 #define ZFCP_CMD_DBF_LENGTH 8 #define ZFCP_CMD_DBF_LEVEL 3 #define ZFCP_CMD_DBF_NAME "zfcpcmd" #define ZFCP_ABORT_DBF_INDEX 2 #define ZFCP_ABORT_DBF_AREAS 1 #define ZFCP_ABORT_DBF_LENGTH 8 #define ZFCP_ABORT_DBF_LEVEL 6 #define ZFCP_ABORT_DBF_NAME "zfcpabt" #define ZFCP_IN_ELS_DBF_INDEX 2 #define ZFCP_IN_ELS_DBF_AREAS 1 #define ZFCP_IN_ELS_DBF_LENGTH 8 #define ZFCP_IN_ELS_DBF_LEVEL 6 #define ZFCP_IN_ELS_DBF_NAME "zfcpels" /******************** LOGGING MACROS AND DEFINES *****************************/ /* * Logging may be applied on certain kinds of driver operations * independently. Additionally, different log-levels are supported for * each of these areas. */ #define ZFCP_NAME "zfcp" /* read-only LUN sharing switch initial value */ #define ZFCP_RO_LUN_SHARING_DEFAULTS 0 /* independent log areas */ #define ZFCP_LOG_AREA_OTHER 0 #define ZFCP_LOG_AREA_SCSI 1 #define ZFCP_LOG_AREA_FSF 2 #define ZFCP_LOG_AREA_CONFIG 3 #define ZFCP_LOG_AREA_CIO 4 #define ZFCP_LOG_AREA_QDIO 5 #define ZFCP_LOG_AREA_ERP 6 #define ZFCP_LOG_AREA_FC 7 /* log level values*/ #define ZFCP_LOG_LEVEL_NORMAL 0 #define ZFCP_LOG_LEVEL_INFO 1 #define ZFCP_LOG_LEVEL_DEBUG 2 #define ZFCP_LOG_LEVEL_TRACE 3 /* * this allows removal of logging code by the preprocessor * (the most detailed log level still to be compiled in is specified, * higher log levels are removed) */ #define ZFCP_LOG_LEVEL_LIMIT ZFCP_LOG_LEVEL_TRACE /* get "loglevel" nibble assignment */ #define ZFCP_GET_LOG_VALUE(zfcp_lognibble) \ ((atomic_read(&zfcp_data.loglevel) >> (zfcp_lognibble<<2)) & 0xF) /* set "loglevel" nibble */ #define ZFCP_SET_LOG_NIBBLE(value, zfcp_lognibble) \ (value << (zfcp_lognibble << 2)) /* all log-level defaults are combined to generate initial log-level */ #define ZFCP_LOG_LEVEL_DEFAULTS \ (ZFCP_SET_LOG_NIBBLE(ZFCP_LOG_LEVEL_NORMAL, ZFCP_LOG_AREA_OTHER) | \ ZFCP_SET_LOG_NIBBLE(ZFCP_LOG_LEVEL_NORMAL, ZFCP_LOG_AREA_SCSI) | \ ZFCP_SET_LOG_NIBBLE(ZFCP_LOG_LEVEL_NORMAL, ZFCP_LOG_AREA_FSF) | \ ZFCP_SET_LOG_NIBBLE(ZFCP_LOG_LEVEL_NORMAL, ZFCP_LOG_AREA_CONFIG) | \ ZFCP_SET_LOG_NIBBLE(ZFCP_LOG_LEVEL_NORMAL, ZFCP_LOG_AREA_CIO) | \ ZFCP_SET_LOG_NIBBLE(ZFCP_LOG_LEVEL_NORMAL, ZFCP_LOG_AREA_QDIO) | \ ZFCP_SET_LOG_NIBBLE(ZFCP_LOG_LEVEL_NORMAL, ZFCP_LOG_AREA_ERP) | \ ZFCP_SET_LOG_NIBBLE(ZFCP_LOG_LEVEL_NORMAL, ZFCP_LOG_AREA_FC)) /* check whether we have the right level for logging */ #define ZFCP_LOG_CHECK(level) \ ((ZFCP_GET_LOG_VALUE(ZFCP_LOG_AREA)) >= level) /* logging routine for zfcp */ #define _ZFCP_LOG(fmt, args...) \ printk(KERN_ERR ZFCP_NAME": %s(%d): " fmt, __FUNCTION__, \ __LINE__ , ##args) #define ZFCP_LOG(level, fmt, args...) \ do { \ if (ZFCP_LOG_CHECK(level)) \ _ZFCP_LOG(fmt, ##args); \ } while (0) #if ZFCP_LOG_LEVEL_LIMIT < ZFCP_LOG_LEVEL_NORMAL # define ZFCP_LOG_NORMAL(fmt, args...) #else # define ZFCP_LOG_NORMAL(fmt, args...) \ do { \ if (ZFCP_LOG_CHECK(ZFCP_LOG_LEVEL_NORMAL)) \ printk(KERN_ERR ZFCP_NAME": " fmt, ##args); \ } while (0) #endif #if ZFCP_LOG_LEVEL_LIMIT < ZFCP_LOG_LEVEL_INFO # define ZFCP_LOG_INFO(fmt, args...) #else # define ZFCP_LOG_INFO(fmt, args...) \ do { \ if (ZFCP_LOG_CHECK(ZFCP_LOG_LEVEL_INFO)) \ printk(KERN_ERR ZFCP_NAME": " fmt, ##args); \ } while (0) #endif #if ZFCP_LOG_LEVEL_LIMIT < ZFCP_LOG_LEVEL_DEBUG # define ZFCP_LOG_DEBUG(fmt, args...) #else # define ZFCP_LOG_DEBUG(fmt, args...) \ ZFCP_LOG(ZFCP_LOG_LEVEL_DEBUG, fmt , ##args) #endif #if ZFCP_LOG_LEVEL_LIMIT < ZFCP_LOG_LEVEL_TRACE # define ZFCP_LOG_TRACE(fmt, args...) #else # define ZFCP_LOG_TRACE(fmt, args...) \ ZFCP_LOG(ZFCP_LOG_LEVEL_TRACE, fmt , ##args) #endif #ifndef ZFCP_PRINT_FLAGS # define ZFCP_LOG_FLAGS(level, fmt, args...) #else extern u32 flags_dump; # define ZFCP_LOG_FLAGS(level, fmt, args...) \ do { \ if (level <= flags_dump) \ _ZFCP_LOG(fmt, ##args); \ } while (0) #endif /*************** ADAPTER/PORT/UNIT AND FSF_REQ STATUS FLAGS ******************/ /* * Note, the leftmost status byte is common among adapter, port * and unit */ #define ZFCP_COMMON_FLAGS 0xfff00000 #define ZFCP_SPECIFIC_FLAGS 0x000fffff /* common status bits */ #define ZFCP_STATUS_COMMON_REMOVE 0x80000000 #define ZFCP_STATUS_COMMON_RUNNING 0x40000000 #define ZFCP_STATUS_COMMON_ERP_FAILED 0x20000000 #define ZFCP_STATUS_COMMON_UNBLOCKED 0x10000000 #define ZFCP_STATUS_COMMON_OPENING 0x08000000 #define ZFCP_STATUS_COMMON_OPEN 0x04000000 #define ZFCP_STATUS_COMMON_CLOSING 0x02000000 #define ZFCP_STATUS_COMMON_ERP_INUSE 0x01000000 #define ZFCP_STATUS_COMMON_ACCESS_DENIED 0x00800000 /* adapter status */ #define ZFCP_STATUS_ADAPTER_QDIOUP 0x00000002 #define ZFCP_STATUS_ADAPTER_REGISTERED 0x00000004 #define ZFCP_STATUS_ADAPTER_XCONFIG_OK 0x00000008 #define ZFCP_STATUS_ADAPTER_HOST_CON_INIT 0x00000010 #define ZFCP_STATUS_ADAPTER_ERP_THREAD_UP 0x00000020 #define ZFCP_STATUS_ADAPTER_ERP_THREAD_KILL 0x00000080 #define ZFCP_STATUS_ADAPTER_ERP_PENDING 0x00000100 #define ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED 0x00000200 #define ZFCP_STATUS_ADAPTER_SCSI_UP \ (ZFCP_STATUS_COMMON_UNBLOCKED | \ ZFCP_STATUS_ADAPTER_REGISTERED) /* FC-PH/FC-GS well-known address identifiers for generic services */ #define ZFCP_DID_MANAGEMENT_SERVICE 0xFFFFFA #define ZFCP_DID_TIME_SERVICE 0xFFFFFB #define ZFCP_DID_DIRECTORY_SERVICE 0xFFFFFC #define ZFCP_DID_ALIAS_SERVICE 0xFFFFF8 #define ZFCP_DID_KEY_DISTRIBUTION_SERVICE 0xFFFFF7 /* remote port status */ #define ZFCP_STATUS_PORT_PHYS_OPEN 0x00000001 #define ZFCP_STATUS_PORT_DID_DID 0x00000002 #define ZFCP_STATUS_PORT_PHYS_CLOSING 0x00000004 #define ZFCP_STATUS_PORT_NO_WWPN 0x00000008 #define ZFCP_STATUS_PORT_NO_SCSI_ID 0x00000010 #define ZFCP_STATUS_PORT_INVALID_WWPN 0x00000020 #define ZFCP_STATUS_PORT_ACCESS_DENIED 0x00000040 /* for ports with well known addresses */ #define ZFCP_STATUS_PORT_WKA \ (ZFCP_STATUS_PORT_NO_WWPN | \ ZFCP_STATUS_PORT_NO_SCSI_ID) /* logical unit status */ #define ZFCP_STATUS_UNIT_NOTSUPPUNITRESET 0x00000001 #define ZFCP_STATUS_UNIT_TEMPORARY 0x00000002 #define ZFCP_STATUS_UNIT_SHARED 0x00000004 #define ZFCP_STATUS_UNIT_READONLY 0x00000008 /* FSF request status (this does not have a common part) */ #define ZFCP_STATUS_FSFREQ_NOT_INIT 0x00000000 #define ZFCP_STATUS_FSFREQ_POOL 0x00000001 #define ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT 0x00000002 #define ZFCP_STATUS_FSFREQ_COMPLETED 0x00000004 #define ZFCP_STATUS_FSFREQ_ERROR 0x00000008 #define ZFCP_STATUS_FSFREQ_CLEANUP 0x00000010 #define ZFCP_STATUS_FSFREQ_ABORTING 0x00000020 #define ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED 0x00000040 #define ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED 0x00000080 #define ZFCP_STATUS_FSFREQ_ABORTED 0x00000100 #define ZFCP_STATUS_FSFREQ_TMFUNCFAILED 0x00000200 #define ZFCP_STATUS_FSFREQ_TMFUNCNOTSUPP 0x00000400 #define ZFCP_STATUS_FSFREQ_RETRY 0x00000800 #define ZFCP_STATUS_FSFREQ_DISMISSED 0x00001000 /*********************** ERROR RECOVERY PROCEDURE DEFINES ********************/ #define ZFCP_MAX_ERPS 3 #define ZFCP_ERP_FSFREQ_TIMEOUT (30 * HZ) #define ZFCP_ERP_MEMWAIT_TIMEOUT HZ #define ZFCP_STATUS_ERP_TIMEDOUT 0x10000000 #define ZFCP_STATUS_ERP_CLOSE_ONLY 0x01000000 #define ZFCP_STATUS_ERP_DISMISSING 0x00100000 #define ZFCP_STATUS_ERP_DISMISSED 0x00200000 #define ZFCP_STATUS_ERP_LOWMEM 0x00400000 #define ZFCP_ERP_STEP_UNINITIALIZED 0x00000000 #define ZFCP_ERP_STEP_FSF_XCONFIG 0x00000001 #define ZFCP_ERP_STEP_PHYS_PORT_CLOSING 0x00000010 #define ZFCP_ERP_STEP_PORT_CLOSING 0x00000100 #define ZFCP_ERP_STEP_NAMESERVER_OPEN 0x00000200 #define ZFCP_ERP_STEP_NAMESERVER_LOOKUP 0x00000400 #define ZFCP_ERP_STEP_PORT_OPENING 0x00000800 #define ZFCP_ERP_STEP_UNIT_CLOSING 0x00001000 #define ZFCP_ERP_STEP_UNIT_OPENING 0x00002000 /* Ordered by escalation level (necessary for proper erp-code operation) */ #define ZFCP_ERP_ACTION_REOPEN_ADAPTER 0x4 #define ZFCP_ERP_ACTION_REOPEN_PORT_FORCED 0x3 #define ZFCP_ERP_ACTION_REOPEN_PORT 0x2 #define ZFCP_ERP_ACTION_REOPEN_UNIT 0x1 #define ZFCP_ERP_ACTION_RUNNING 0x1 #define ZFCP_ERP_ACTION_READY 0x2 #define ZFCP_ERP_SUCCEEDED 0x0 #define ZFCP_ERP_FAILED 0x1 #define ZFCP_ERP_CONTINUES 0x2 #define ZFCP_ERP_EXIT 0x3 #define ZFCP_ERP_DISMISSED 0x4 #define ZFCP_ERP_NOMEM 0x5 /******************** CFDC SPECIFIC STUFF *****************************/ /* Firewall data channel sense data record */ struct zfcp_cfdc_sense_data { u32 signature; /* Request signature */ u32 devno; /* FCP adapter device number */ u32 command; /* Command code */ u32 fsf_status; /* FSF request status and status qualifier */ u8 fsf_status_qual[FSF_STATUS_QUALIFIER_SIZE]; u8 payloads[256]; /* Access conflicts list */ u8 control_file[0]; /* Access control table */ }; #define ZFCP_CFDC_SIGNATURE 0xCFDCACDF #define ZFCP_CFDC_CMND_DOWNLOAD_NORMAL 0x00010001 #define ZFCP_CFDC_CMND_DOWNLOAD_FORCE 0x00010101 #define ZFCP_CFDC_CMND_FULL_ACCESS 0x00000201 #define ZFCP_CFDC_CMND_RESTRICTED_ACCESS 0x00000401 #define ZFCP_CFDC_CMND_UPLOAD 0x00010002 #define ZFCP_CFDC_DOWNLOAD 0x00000001 #define ZFCP_CFDC_UPLOAD 0x00000002 #define ZFCP_CFDC_WITH_CONTROL_FILE 0x00010000 #define ZFCP_CFDC_DEV_NAME "zfcp_cfdc" #define ZFCP_CFDC_DEV_MAJOR MISC_MAJOR #define ZFCP_CFDC_DEV_MINOR MISC_DYNAMIC_MINOR #define ZFCP_CFDC_MAX_CONTROL_FILE_SIZE 127 * 1024 /************************* STRUCTURE DEFINITIONS *****************************/ struct zfcp_fsf_req; /* holds various memory pools of an adapter */ struct zfcp_adapter_mempool { mempool_t *fsf_req_erp; mempool_t *fsf_req_scsi; mempool_t *fsf_req_abort; mempool_t *fsf_req_status_read; mempool_t *data_status_read; mempool_t *data_gid_pn; }; struct zfcp_exchange_config_data{ }; struct zfcp_open_port { struct zfcp_port *port; }; struct zfcp_close_port { struct zfcp_port *port; }; struct zfcp_open_unit { struct zfcp_unit *unit; }; struct zfcp_close_unit { struct zfcp_unit *unit; }; struct zfcp_close_physical_port { struct zfcp_port *port; }; struct zfcp_send_fcp_command_task { struct zfcp_fsf_req *fsf_req; struct zfcp_unit *unit; struct scsi_cmnd *scsi_cmnd; unsigned long start_jiffies; }; struct zfcp_send_fcp_command_task_management { struct zfcp_unit *unit; }; struct zfcp_abort_fcp_command { struct zfcp_fsf_req *fsf_req; struct zfcp_unit *unit; }; /* * header for CT_IU */ struct ct_hdr { u8 revision; // 0x01 u8 in_id[3]; // 0x00 u8 gs_type; // 0xFC Directory Service u8 gs_subtype; // 0x02 Name Server u8 options; // 0x00 single bidirectional exchange u8 reserved0; u16 cmd_rsp_code; // 0x0121 GID_PN, or 0x0100 GA_NXT u16 max_res_size; // <= (4096 - 16) / 4 u8 reserved1; u8 reason_code; u8 reason_code_expl; u8 vendor_unique; } __attribute__ ((packed)); /* nameserver request CT_IU -- for requests where * a port name is required */ struct ct_iu_gid_pn_req { struct ct_hdr header; wwn_t wwpn; } __attribute__ ((packed)); /* FS_ACC IU and data unit for GID_PN nameserver request */ struct ct_iu_gid_pn_resp { struct ct_hdr header; fc_id_t d_id; } __attribute__ ((packed)); typedef void (*zfcp_send_ct_handler_t)(unsigned long); /** * struct zfcp_send_ct - used to pass parameters to function zfcp_fsf_send_ct * @port: port where the request is sent to * @req: scatter-gather list for request * @resp: scatter-gather list for response * @req_count: number of elements in request scatter-gather list * @resp_count: number of elements in response scatter-gather list * @handler: handler function (called for response to the request) * @handler_data: data passed to handler function * @pool: pointer to memory pool for ct request structure * @timeout: FSF timeout for this request * @timer: timer (e.g. for request initiated by erp) * @completion: completion for synchronization purposes * @status: used to pass error status to calling function */ struct zfcp_send_ct { struct zfcp_port *port; struct scatterlist *req; struct scatterlist *resp; unsigned int req_count; unsigned int resp_count; zfcp_send_ct_handler_t handler; unsigned long handler_data; mempool_t *pool; int timeout; struct timer_list *timer; struct completion *completion; int status; }; /* used for name server requests in error recovery */ struct zfcp_gid_pn_data { struct zfcp_send_ct ct; struct scatterlist req; struct scatterlist resp; struct ct_iu_gid_pn_req ct_iu_req; struct ct_iu_gid_pn_resp ct_iu_resp; struct zfcp_port *port; }; typedef void (*zfcp_send_els_handler_t)(unsigned long); /** * struct zfcp_send_els - used to pass parameters to function zfcp_fsf_send_els * @adapter: adapter where request is sent from * @d_id: destiniation id of port where request is sent to * @req: scatter-gather list for request * @resp: scatter-gather list for response * @req_count: number of elements in request scatter-gather list * @resp_count: number of elements in response scatter-gather list * @handler: handler function (called for response to the request) * @handler_data: data passed to handler function * @timer: timer (e.g. for request initiated by erp) * @completion: completion for synchronization purposes * @ls_code: hex code of ELS command * @status: used to pass error status to calling function */ struct zfcp_send_els { struct zfcp_adapter *adapter; fc_id_t d_id; struct scatterlist *req; struct scatterlist *resp; unsigned int req_count; unsigned int resp_count; zfcp_send_els_handler_t handler; unsigned long handler_data; struct timer_list *timer; struct completion *completion; int ls_code; int status; }; struct zfcp_status_read { struct fsf_status_read_buffer *buffer; }; struct zfcp_fsf_done { struct completion *complete; int status; }; /* request specific data */ union zfcp_req_data { struct zfcp_exchange_config_data exchange_config_data; struct zfcp_open_port open_port; struct zfcp_close_port close_port; struct zfcp_open_unit open_unit; struct zfcp_close_unit close_unit; struct zfcp_close_physical_port close_physical_port; struct zfcp_send_fcp_command_task send_fcp_command_task; struct zfcp_send_fcp_command_task_management send_fcp_command_task_management; struct zfcp_abort_fcp_command abort_fcp_command; struct zfcp_send_ct *send_ct; struct zfcp_send_els *send_els; struct zfcp_status_read status_read; struct fsf_qtcb_bottom_port *port_data; }; struct zfcp_qdio_queue { struct qdio_buffer *buffer[QDIO_MAX_BUFFERS_PER_Q]; /* SBALs */ u8 free_index; /* index of next free bfr in queue (free_count>0) */ atomic_t free_count; /* number of free buffers in queue */ rwlock_t queue_lock; /* lock for operations on queue */ int distance_from_int; /* SBALs used since PCI indication was last set */ }; struct zfcp_erp_action { struct list_head list; int action; /* requested action code */ struct zfcp_adapter *adapter; /* device which should be recovered */ struct zfcp_port *port; struct zfcp_unit *unit; volatile u32 status; /* recovery status */ u32 step; /* active step of this erp action */ struct zfcp_fsf_req *fsf_req; /* fsf request currently pending for this action */ struct timer_list timer; }; struct zfcp_adapter { struct list_head list; /* list of adapters */ atomic_t refcount; /* reference count */ wait_queue_head_t remove_wq; /* can be used to wait for refcount drop to zero */ wwn_t wwnn; /* WWNN */ wwn_t wwpn; /* WWPN */ fc_id_t s_id; /* N_Port ID */ wwn_t peer_wwnn; /* P2P peer WWNN */ wwn_t peer_wwpn; /* P2P peer WWPN */ fc_id_t peer_d_id; /* P2P peer D_ID */ struct ccw_device *ccw_device; /* S/390 ccw device */ u8 fc_service_class; u32 fc_topology; /* FC topology */ u32 fc_link_speed; /* FC interface speed */ u32 hydra_version; /* Hydra version */ u32 fsf_lic_version; u32 supported_features;/* of FCP channel */ u32 hardware_version; /* of FCP channel */ u8 serial_number[32]; /* of hardware */ struct Scsi_Host *scsi_host; /* Pointer to mid-layer */ unsigned short scsi_host_no; /* Assigned host number */ unsigned char name[9]; struct list_head port_list_head; /* remote port list */ struct list_head port_remove_lh; /* head of ports to be removed */ u32 ports; /* number of remote ports */ struct timer_list scsi_er_timer; /* SCSI err recovery watch */ struct list_head fsf_req_list_head; /* head of FSF req list */ rwlock_t fsf_req_list_lock; /* lock for ops on list of FSF requests */ atomic_t fsf_reqs_active; /* # active FSF reqs */ struct zfcp_qdio_queue request_queue; /* request queue */ u32 fsf_req_seq_no; /* FSF cmnd seq number */ wait_queue_head_t request_wq; /* can be used to wait for more avaliable SBALs */ struct zfcp_qdio_queue response_queue; /* response queue */ rwlock_t abort_lock; /* Protects against SCSI stack abort/command completion races */ u16 status_read_failed; /* # failed status reads */ atomic_t status; /* status of this adapter */ struct list_head erp_ready_head; /* error recovery for this adapter/devices */ struct list_head erp_running_head; rwlock_t erp_lock; struct semaphore erp_ready_sem; wait_queue_head_t erp_thread_wqh; wait_queue_head_t erp_done_wqh; struct zfcp_erp_action erp_action; /* pending error recovery */ atomic_t erp_counter; u32 erp_total_count; /* total nr of enqueued erp actions */ u32 erp_low_mem_count; /* nr of erp actions waiting for memory */ struct zfcp_port *nameserver_port; /* adapter's nameserver */ debug_info_t *erp_dbf; /* S/390 debug features */ debug_info_t *abort_dbf; debug_info_t *in_els_dbf; debug_info_t *cmd_dbf; spinlock_t dbf_lock; struct zfcp_adapter_mempool pool; /* Adapter memory pools */ struct qdio_initialize qdio_init_data; /* for qdio_establish */ struct device generic_services; /* directory for WKA ports */ }; /* * the struct device sysfs_device must be at the beginning of this structure. * pointer to struct device is used to free port structure in release function * of the device. don't change! */ struct zfcp_port { struct device sysfs_device; /* sysfs device */ struct list_head list; /* list of remote ports */ atomic_t refcount; /* reference count */ wait_queue_head_t remove_wq; /* can be used to wait for refcount drop to zero */ struct zfcp_adapter *adapter; /* adapter used to access port */ struct list_head unit_list_head; /* head of logical unit list */ struct list_head unit_remove_lh; /* head of luns to be removed list */ u32 units; /* # of logical units in list */ atomic_t status; /* status of this remote port */ scsi_id_t scsi_id; /* own SCSI ID */ wwn_t wwnn; /* WWNN if known */ wwn_t wwpn; /* WWPN */ fc_id_t d_id; /* D_ID */ u32 handle; /* handle assigned by FSF */ struct zfcp_erp_action erp_action; /* pending error recovery */ atomic_t erp_counter; }; /* the struct device sysfs_device must be at the beginning of this structure. * pointer to struct device is used to free unit structure in release function * of the device. don't change! */ struct zfcp_unit { struct device sysfs_device; /* sysfs device */ struct list_head list; /* list of logical units */ atomic_t refcount; /* reference count */ wait_queue_head_t remove_wq; /* can be used to wait for refcount drop to zero */ struct zfcp_port *port; /* remote port of unit */ atomic_t status; /* status of this logical unit */ scsi_lun_t scsi_lun; /* own SCSI LUN */ fcp_lun_t fcp_lun; /* own FCP_LUN */ u32 handle; /* handle assigned by FSF */ struct scsi_device *device; /* scsi device struct pointer */ struct zfcp_erp_action erp_action; /* pending error recovery */ atomic_t erp_counter; }; /* FSF request */ struct zfcp_fsf_req { struct list_head list; /* list of FSF requests */ struct zfcp_adapter *adapter; /* adapter request belongs to */ u8 sbal_number; /* nr of SBALs free for use */ u8 sbal_first; /* first SBAL for this request */ u8 sbal_last; /* last possible SBAL for this reuest */ u8 sbal_curr; /* current SBAL during creation of request */ u8 sbale_curr; /* current SBALE during creation of request */ wait_queue_head_t completion_wq; /* can be used by a routine to wait for completion */ volatile u32 status; /* status of this request */ u32 fsf_command; /* FSF Command copy */ struct fsf_qtcb *qtcb; /* address of associated QTCB */ u32 seq_no; /* Sequence number of request */ union zfcp_req_data data; /* Info fields of request */ struct zfcp_erp_action *erp_action; /* used if this request is issued on behalf of erp */ mempool_t *pool; /* used if request was alloacted from emergency pool */ }; typedef void zfcp_fsf_req_handler_t(struct zfcp_fsf_req*); /* driver data */ struct zfcp_data { struct scsi_host_template scsi_host_template; atomic_t status; /* Module status flags */ struct list_head adapter_list_head; /* head of adapter list */ struct list_head adapter_remove_lh; /* head of adapters to be removed */ rwlock_t status_read_lock; /* for status read thread */ struct list_head status_read_receive_head; struct list_head status_read_send_head; struct semaphore status_read_sema; wait_queue_head_t status_read_thread_wqh; u32 adapters; /* # of adapters in list */ rwlock_t config_lock; /* serialises changes to adapter/port/unit lists */ struct semaphore config_sema; /* serialises configuration changes */ atomic_t loglevel; /* current loglevel */ char init_busid[BUS_ID_SIZE]; wwn_t init_wwpn; fcp_lun_t init_fcp_lun; char *driver_version; }; /** * struct zfcp_sg_list - struct describing a scatter-gather list * @sg: pointer to array of (struct scatterlist) * @count: number of elements in scatter-gather list */ struct zfcp_sg_list { struct scatterlist *sg; unsigned int count; }; /* number of elements for various memory pools */ #define ZFCP_POOL_FSF_REQ_ERP_NR 1 #define ZFCP_POOL_FSF_REQ_SCSI_NR 1 #define ZFCP_POOL_FSF_REQ_ABORT_NR 1 #define ZFCP_POOL_STATUS_READ_NR ZFCP_STATUS_READS_RECOM #define ZFCP_POOL_DATA_GID_PN_NR 1 /* struct used by memory pools for fsf_requests */ struct zfcp_fsf_req_pool_element { struct zfcp_fsf_req fsf_req; struct fsf_qtcb qtcb; }; /********************** ZFCP SPECIFIC DEFINES ********************************/ #define ZFCP_FSFREQ_CLEANUP_TIMEOUT HZ/10 #define ZFCP_KNOWN 0x00000001 #define ZFCP_REQ_AUTO_CLEANUP 0x00000002 #define ZFCP_WAIT_FOR_SBAL 0x00000004 #define ZFCP_REQ_NO_QTCB 0x00000008 #define ZFCP_SET 0x00000100 #define ZFCP_CLEAR 0x00000200 #define ZFCP_INTERRUPTIBLE 1 #define ZFCP_UNINTERRUPTIBLE 0 #ifndef atomic_test_mask #define atomic_test_mask(mask, target) \ ((atomic_read(target) & mask) == mask) #endif extern void _zfcp_hex_dump(char *, int); #define ZFCP_HEX_DUMP(level, addr, count) \ if (ZFCP_LOG_CHECK(level)) { \ _zfcp_hex_dump(addr, count); \ } #define zfcp_get_busid_by_adapter(adapter) (adapter->ccw_device->dev.bus_id) #define zfcp_get_busid_by_port(port) (zfcp_get_busid_by_adapter(port->adapter)) #define zfcp_get_busid_by_unit(unit) (zfcp_get_busid_by_port(unit->port)) /* * functions needed for reference/usage counting */ static inline void zfcp_unit_get(struct zfcp_unit *unit) { atomic_inc(&unit->refcount); } static inline void zfcp_unit_put(struct zfcp_unit *unit) { if (atomic_dec_return(&unit->refcount) == 0) wake_up(&unit->remove_wq); } static inline void zfcp_unit_wait(struct zfcp_unit *unit) { wait_event(unit->remove_wq, atomic_read(&unit->refcount) == 0); } static inline void zfcp_port_get(struct zfcp_port *port) { atomic_inc(&port->refcount); } static inline void zfcp_port_put(struct zfcp_port *port) { if (atomic_dec_return(&port->refcount) == 0) wake_up(&port->remove_wq); } static inline void zfcp_port_wait(struct zfcp_port *port) { wait_event(port->remove_wq, atomic_read(&port->refcount) == 0); } static inline void zfcp_adapter_get(struct zfcp_adapter *adapter) { atomic_inc(&adapter->refcount); } static inline void zfcp_adapter_put(struct zfcp_adapter *adapter) { if (atomic_dec_return(&adapter->refcount) == 0) wake_up(&adapter->remove_wq); } static inline void zfcp_adapter_wait(struct zfcp_adapter *adapter) { wait_event(adapter->remove_wq, atomic_read(&adapter->refcount) == 0); } #endif /* ZFCP_DEF_H */


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