| /* |
| * This file is part of the zfcp device driver for |
| * FCP adapters for IBM System z9 and zSeries. |
| * |
| * (C) Copyright IBM Corp. 2002, 2006 |
| * |
| * 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 |
| |
| /*************************** 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 "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> |
| |
| |
| /********************* GENERAL DEFINES *********************************/ |
| |
| /* zfcp version number, it consists of major, minor, and patch-level number */ |
| #define ZFCP_VERSION "4.8.0" |
| |
| /** |
| * 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); |
| } |
| |
| #define REQUEST_LIST_SIZE 128 |
| |
| /********************* SCSI SPECIFIC DEFINES *********************************/ |
| #define ZFCP_SCSI_ER_TIMEOUT (10*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 |
| |
| /* Do 1st retry in 1 second, then double the timeout for each following retry */ |
| #define ZFCP_EXCHANGE_CONFIG_DATA_FIRST_SLEEP 100 |
| #define ZFCP_EXCHANGE_CONFIG_DATA_RETRIES 7 |
| |
| /* 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 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_RSCN 0x61040000 |
| #define LS_LOGO 0x05000000 |
| #define LS_PLOGI 0x03000000 |
| |
| 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 |
| |
| /* see fc-ph */ |
| struct fcp_logo { |
| u32 command; |
| u32 nport_did; |
| wwn_t nport_wwpn; |
| } __attribute__((packed)); |
| |
| /* |
| * DBF stuff |
| */ |
| #define ZFCP_DBF_TAG_SIZE 4 |
| |
| struct zfcp_dbf_dump { |
| u8 tag[ZFCP_DBF_TAG_SIZE]; |
| u32 total_size; /* size of total dump data */ |
| u32 offset; /* how much data has being already dumped */ |
| u32 size; /* how much data comes with this record */ |
| u8 data[]; /* dump data */ |
| } __attribute__ ((packed)); |
| |
| /* FIXME: to be inflated when reworking the erp dbf */ |
| struct zfcp_erp_dbf_record { |
| u8 dummy[16]; |
| } __attribute__ ((packed)); |
| |
| struct zfcp_hba_dbf_record_response { |
| u32 fsf_command; |
| u64 fsf_reqid; |
| u32 fsf_seqno; |
| u64 fsf_issued; |
| u32 fsf_prot_status; |
| u32 fsf_status; |
| u8 fsf_prot_status_qual[FSF_PROT_STATUS_QUAL_SIZE]; |
| u8 fsf_status_qual[FSF_STATUS_QUALIFIER_SIZE]; |
| u32 fsf_req_status; |
| u8 sbal_first; |
| u8 sbal_curr; |
| u8 sbal_last; |
| u8 pool; |
| u64 erp_action; |
| union { |
| struct { |
| u64 scsi_cmnd; |
| u64 scsi_serial; |
| } send_fcp; |
| struct { |
| u64 wwpn; |
| u32 d_id; |
| u32 port_handle; |
| } port; |
| struct { |
| u64 wwpn; |
| u64 fcp_lun; |
| u32 port_handle; |
| u32 lun_handle; |
| } unit; |
| struct { |
| u32 d_id; |
| u8 ls_code; |
| } send_els; |
| } data; |
| } __attribute__ ((packed)); |
| |
| struct zfcp_hba_dbf_record_status { |
| u8 failed; |
| u32 status_type; |
| u32 status_subtype; |
| struct fsf_queue_designator |
| queue_designator; |
| u32 payload_size; |
| #define ZFCP_DBF_UNSOL_PAYLOAD 80 |
| #define ZFCP_DBF_UNSOL_PAYLOAD_SENSE_DATA_AVAIL 32 |
| #define ZFCP_DBF_UNSOL_PAYLOAD_BIT_ERROR_THRESHOLD 56 |
| #define ZFCP_DBF_UNSOL_PAYLOAD_FEATURE_UPDATE_ALERT 2 * sizeof(u32) |
| u8 payload[ZFCP_DBF_UNSOL_PAYLOAD]; |
| } __attribute__ ((packed)); |
| |
| struct zfcp_hba_dbf_record_qdio { |
| u32 status; |
| u32 qdio_error; |
| u32 siga_error; |
| u8 sbal_index; |
| u8 sbal_count; |
| } __attribute__ ((packed)); |
| |
| struct zfcp_hba_dbf_record { |
| u8 tag[ZFCP_DBF_TAG_SIZE]; |
| u8 tag2[ZFCP_DBF_TAG_SIZE]; |
| union { |
| struct zfcp_hba_dbf_record_response response; |
| struct zfcp_hba_dbf_record_status status; |
| struct zfcp_hba_dbf_record_qdio qdio; |
| } type; |
| } __attribute__ ((packed)); |
| |
| struct zfcp_san_dbf_record_ct { |
| union { |
| struct { |
| u16 cmd_req_code; |
| u8 revision; |
| u8 gs_type; |
| u8 gs_subtype; |
| u8 options; |
| u16 max_res_size; |
| } request; |
| struct { |
| u16 cmd_rsp_code; |
| u8 revision; |
| u8 reason_code; |
| u8 reason_code_expl; |
| u8 vendor_unique; |
| } response; |
| } type; |
| u32 payload_size; |
| #define ZFCP_DBF_CT_PAYLOAD 24 |
| u8 payload[ZFCP_DBF_CT_PAYLOAD]; |
| } __attribute__ ((packed)); |
| |
| struct zfcp_san_dbf_record_els { |
| u8 ls_code; |
| u32 payload_size; |
| #define ZFCP_DBF_ELS_PAYLOAD 32 |
| #define ZFCP_DBF_ELS_MAX_PAYLOAD 1024 |
| u8 payload[ZFCP_DBF_ELS_PAYLOAD]; |
| } __attribute__ ((packed)); |
| |
| struct zfcp_san_dbf_record { |
| u8 tag[ZFCP_DBF_TAG_SIZE]; |
| u64 fsf_reqid; |
| u32 fsf_seqno; |
| u32 s_id; |
| u32 d_id; |
| union { |
| struct zfcp_san_dbf_record_ct ct; |
| struct zfcp_san_dbf_record_els els; |
| } type; |
| } __attribute__ ((packed)); |
| |
| struct zfcp_scsi_dbf_record { |
| u8 tag[ZFCP_DBF_TAG_SIZE]; |
| u8 tag2[ZFCP_DBF_TAG_SIZE]; |
| u32 scsi_id; |
| u32 scsi_lun; |
| u32 scsi_result; |
| u64 scsi_cmnd; |
| u64 scsi_serial; |
| #define ZFCP_DBF_SCSI_OPCODE 16 |
| u8 scsi_opcode[ZFCP_DBF_SCSI_OPCODE]; |
| u8 scsi_retries; |
| u8 scsi_allowed; |
| u64 fsf_reqid; |
| u32 fsf_seqno; |
| u64 fsf_issued; |
| union { |
| u64 old_fsf_reqid; |
| struct { |
| u8 rsp_validity; |
| u8 rsp_scsi_status; |
| u32 rsp_resid; |
| u8 rsp_code; |
| #define ZFCP_DBF_SCSI_FCP_SNS_INFO 16 |
| #define ZFCP_DBF_SCSI_MAX_FCP_SNS_INFO 256 |
| u32 sns_info_len; |
| u8 sns_info[ZFCP_DBF_SCSI_FCP_SNS_INFO]; |
| } fcp; |
| } type; |
| } __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) |
| |
| /******************** 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" |
| |
| /* 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...) do { } while (0) |
| #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...) do { } while (0) |
| #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...) do { } while (0) |
| #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...) do { } while (0) |
| #else |
| # define ZFCP_LOG_TRACE(fmt, args...) \ |
| ZFCP_LOG(ZFCP_LOG_LEVEL_TRACE, fmt , ##args) |
| #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 |
| |
| /* 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 |
| #define ZFCP_STATUS_COMMON_ACCESS_BOXED 0x00400000 |
| |
| /* 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_XPORT_OK 0x00000800 |
| |
| /* 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 |
| |
| /* 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 |
| #define ZFCP_STATUS_UNIT_REGISTERED 0x00000010 |
| |
| /* 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; |
| }; |
| |
| /* |
| * 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; |
| u32 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 |
| * @port: port where ELS is destinated (port reference count has to be increased) |
| * @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; |
| struct zfcp_port *port; |
| u32 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_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 peer_wwnn; /* P2P peer WWNN */ |
| wwn_t peer_wwpn; /* P2P peer WWPN */ |
| u32 peer_d_id; /* P2P peer D_ID */ |
| struct ccw_device *ccw_device; /* S/390 ccw device */ |
| u32 hydra_version; /* Hydra version */ |
| u32 fsf_lic_version; |
| u32 adapter_features; /* FCP channel features */ |
| u32 connection_features; /* host connection features */ |
| u32 hardware_version; /* of FCP channel */ |
| struct Scsi_Host *scsi_host; /* Pointer to mid-layer */ |
| 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 */ |
| atomic_t reqs_active; /* # active FSF reqs */ |
| unsigned long req_no; /* unique FSF req number */ |
| struct list_head *req_list; /* list of pending reqs */ |
| spinlock_t req_list_lock; /* request list lock */ |
| 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; |
| debug_info_t *hba_dbf; |
| debug_info_t *san_dbf; /* debug feature areas */ |
| debug_info_t *scsi_dbf; |
| spinlock_t erp_dbf_lock; |
| spinlock_t hba_dbf_lock; |
| spinlock_t san_dbf_lock; |
| spinlock_t scsi_dbf_lock; |
| struct zfcp_erp_dbf_record erp_dbf_buf; |
| struct zfcp_hba_dbf_record hba_dbf_buf; |
| struct zfcp_san_dbf_record san_dbf_buf; |
| struct zfcp_scsi_dbf_record scsi_dbf_buf; |
| 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 */ |
| struct fc_host_statistics *fc_stats; |
| struct fsf_qtcb_bottom_port *stats_reset_data; |
| unsigned long stats_reset; |
| }; |
| |
| /* |
| * 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 fc_rport *rport; /* rport of fc transport class */ |
| 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 */ |
| wwn_t wwnn; /* WWNN if known */ |
| wwn_t wwpn; /* WWPN */ |
| u32 d_id; /* D_ID */ |
| u32 handle; /* handle assigned by FSF */ |
| struct zfcp_erp_action erp_action; /* pending error recovery */ |
| atomic_t erp_counter; |
| u32 maxframe_size; |
| u32 supported_classes; |
| }; |
| |
| /* 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 */ |
| unsigned int 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 */ |
| unsigned long req_id; /* unique request ID */ |
| 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 */ |
| unsigned long data; /* private data 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 */ |
| unsigned long long issued; /* request sent time (STCK) */ |
| struct zfcp_unit *unit; |
| }; |
| |
| 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 */ |
| 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_REQ_AUTO_CLEANUP 0x00000002 |
| #define ZFCP_WAIT_FOR_SBAL 0x00000004 |
| #define ZFCP_REQ_NO_QTCB 0x00000008 |
| |
| #define ZFCP_SET 0x00000100 |
| #define ZFCP_CLEAR 0x00000200 |
| |
| #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 */ |