Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/drivers/s390/scsi/zfcp_def.h b/drivers/s390/scsi/zfcp_def.h
new file mode 100644
index 0000000..53fcccb
--- /dev/null
+++ b/drivers/s390/scsi/zfcp_def.h
@@ -0,0 +1,1121 @@
+/*
+ *
+ * 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>
+#include <linux/ioctl32.h>
+
+/************************ DEBUG FLAGS *****************************************/
+
+#define ZFCP_PRINT_FLAGS
+
+/********************* GENERAL DEFINES *********************************/
+
+/* zfcp version number, it consists of major, minor, and patch-level number */
+#define ZFCP_VERSION "4.2.0"
+
+/**
+ * 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 */
+ 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 */