* 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
#ifndef ZFCP_DEF_H
#define ZFCP_DEF_H
-/* this drivers version (do not edit !!! generated and updated by cvs) */
-#define ZFCP_DEF_REVISION "$Revision: 1.73 $"
+#define ZFCP_DEF_REVISION "$Revision: 1.111 $"
/*************************** INCLUDES *****************************************/
#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/reboot.h>
#include <linux/mempool.h>
#include <linux/syscalls.h>
#include <linux/ioctl.h>
-#ifdef CONFIG_S390_SUPPORT
#include <linux/ioctl32.h>
-#endif
/************************ DEBUG FLAGS *****************************************/
/********************* GENERAL DEFINES *********************************/
/* zfcp version number, it consists of major, minor, and patch-level number */
-#define ZFCP_VERSION "4.0.0"
+#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)
{
#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;
/* timeout for name-server lookup (in seconds) */
#define ZFCP_NS_GID_PN_TIMEOUT 10
-#define ZFCP_NS_GA_NXT_TIMEOUT 120
/* largest SCSI command we can process */
/* FCP-2 (FCP_CMND IU) allows up to (255-3+16) */
#define UNTAGGED 5
/* task management flags in FCP-2 FCP_CMND IU */
-#define CLEAR_ACA 0x40
-#define TARGET_RESET 0x20
-#define LOGICAL_UNIT_RESET 0x10
-#define CLEAR_TASK_SET 0x04
-#define ABORT_TASK_SET 0x02
+#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 R_A_TOV 10 /* seconds */
#define ZFCP_ELS_TIMEOUT (2 * R_A_TOV)
-#define ZFCP_LS_RJT 0x01
-#define ZFCP_LS_ACC 0x02
-#define ZFCP_LS_RTV 0x0E
-#define ZFCP_LS_RLS 0x0F
-#define ZFCP_LS_PDISC 0x50
+#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
-#define ZFCP_LS_RLIR 0x7A
-#define ZFCP_LS_RTV_E_D_TOV_FLAG 0x04000000
-
-/* LS_ACC Reason Codes */
-#define ZFCP_LS_RJT_INVALID_COMMAND_CODE 0x01
-#define ZFCP_LS_RJT_LOGICAL_ERROR 0x03
-#define ZFCP_LS_RJT_LOGICAL_BUSY 0x05
-#define ZFCP_LS_RJT_PROTOCOL_ERROR 0x07
-#define ZFCP_LS_RJT_UNABLE_TO_PERFORM 0x09
-#define ZFCP_LS_RJT_COMMAND_NOT_SUPPORTED 0x0B
-#define ZFCP_LS_RJT_VENDOR_UNIQUE_ERROR 0xFF
-
-struct zfcp_ls_rjt {
- u8 code;
- u8 field[3];
- u8 reserved;
- u8 reason_code;
- u8 reason_expl;
- u8 vendor_unique;
-} __attribute__ ((packed));
-
-struct zfcp_ls_rtv {
- u8 code;
- u8 field[3];
-} __attribute__ ((packed));
-
-struct zfcp_ls_rtv_acc {
- u8 code;
- u8 field[3];
- u32 r_a_tov;
- u32 e_d_tov;
- u32 qualifier;
-} __attribute__ ((packed));
-
-struct zfcp_ls_rls {
- u8 code;
- u8 field[3];
- fc_id_t port_id;
-} __attribute__ ((packed));
-struct zfcp_ls_rls_acc {
- u8 code;
- u8 field[3];
- u32 link_failure_count;
- u32 loss_of_sync_count;
- u32 loss_of_signal_count;
- u32 prim_seq_prot_error;
- u32 invalid_transmition_word;
- u32 invalid_crc_count;
-} __attribute__ ((packed));
-
-struct zfcp_ls_pdisc {
- u8 code;
- u8 field[3];
- u8 common_svc_parm[16];
- wwn_t wwpn;
- wwn_t wwnn;
- struct {
- u8 class1[16];
- u8 class2[16];
- u8 class3[16];
- } svc_parm;
- u8 reserved[16];
- u8 vendor_version[16];
-} __attribute__ ((packed));
-
-struct zfcp_ls_pdisc_acc {
- u8 code;
- u8 field[3];
- u8 common_svc_parm[16];
- wwn_t wwpn;
- wwn_t wwnn;
- struct {
- u8 class1[16];
- u8 class2[16];
- u8 class3[16];
- } svc_parm;
- u8 reserved[16];
- u8 vendor_version[16];
+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];
- fc_id_t hard_nport_id;
- wwn_t wwpn;
- wwn_t wwnn;
- fc_id_t nport_id;
+ u32 hard_nport_id;
+ u64 wwpn;
+ u64 wwnn;
+ u32 nport_id;
} __attribute__ ((packed));
struct zfcp_ls_adisc_acc {
u8 code;
u8 field[3];
- fc_id_t hard_nport_id;
- wwn_t wwpn;
- wwn_t wwnn;
- fc_id_t nport_id;
+ u32 hard_nport_id;
+ u64 wwpn;
+ u64 wwnn;
+ u32 nport_id;
} __attribute__ ((packed));
-struct zfcp_ls_rnid {
- u8 code;
- u8 field[3];
- u8 node_id_format;
- u8 reserved[3];
-} __attribute__((packed));
-
-/* common identification data */
-struct zfcp_ls_rnid_common_id {
- u64 n_port_name;
- u64 node_name;
-} __attribute__((packed));
-
-/* general topology specific identification data */
-struct zfcp_ls_rnid_general_topology_id {
- u8 vendor_unique[16];
- u32 associated_type;
- u32 physical_port_number;
- u32 nr_attached_nodes;
- u8 node_management;
- u8 ip_version;
- u16 port_number;
- u8 ip_address[16];
- u8 reserved[2];
- u16 vendor_specific;
-} __attribute__((packed));
-
-struct zfcp_ls_rnid_acc {
- u8 code;
- u8 field[3];
- u8 node_id_format;
- u8 common_id_length;
- u8 reserved;
- u8 specific_id_length;
- struct zfcp_ls_rnid_common_id
- common_id;
- struct zfcp_ls_rnid_general_topology_id
- specific_id;
-} __attribute__((packed));
+struct zfcp_rc_entry {
+ u8 code;
+ const char *description;
+};
/*
* FC-GS-2 stuff
#define ZFCP_CT_NAME_SERVER 0x02
#define ZFCP_CT_SYNCHRONOUS 0x00
#define ZFCP_CT_GID_PN 0x0121
-#define ZFCP_CT_GA_NXT 0x0100
#define ZFCP_CT_MAX_SIZE 0x1020
#define ZFCP_CT_ACCEPT 0x8002
+#define ZFCP_CT_REJECT 0x8001
/*
* FC-GS-4 stuff
#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
/* all log-level defaults are combined to generate initial log-level */
#define ZFCP_LOG_LEVEL_DEFAULTS \
- (ZFCP_SET_LOG_NIBBLE(ZFCP_LOG_LEVEL_INFO, ZFCP_LOG_AREA_OTHER) | \
- ZFCP_SET_LOG_NIBBLE(ZFCP_LOG_LEVEL_INFO, ZFCP_LOG_AREA_SCSI) | \
- ZFCP_SET_LOG_NIBBLE(ZFCP_LOG_LEVEL_INFO, ZFCP_LOG_AREA_FSF) | \
- ZFCP_SET_LOG_NIBBLE(ZFCP_LOG_LEVEL_INFO, ZFCP_LOG_AREA_CONFIG) | \
- ZFCP_SET_LOG_NIBBLE(ZFCP_LOG_LEVEL_INFO, ZFCP_LOG_AREA_CIO) | \
- ZFCP_SET_LOG_NIBBLE(ZFCP_LOG_LEVEL_INFO, ZFCP_LOG_AREA_QDIO) | \
- ZFCP_SET_LOG_NIBBLE(ZFCP_LOG_LEVEL_INFO, ZFCP_LOG_AREA_ERP) | \
- ZFCP_SET_LOG_NIBBLE(ZFCP_LOG_LEVEL_INFO, ZFCP_LOG_AREA_FC))
+ (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) \
/* logging routine for zfcp */
#define _ZFCP_LOG(fmt, args...) \
printk(KERN_ERR ZFCP_NAME": %s(%d): " fmt, __FUNCTION__, \
- __LINE__ , ##args);
+ __LINE__ , ##args)
#define ZFCP_LOG(level, fmt, args...) \
+do { \
if (ZFCP_LOG_CHECK(level)) \
- _ZFCP_LOG(fmt , ##args)
+ _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);
+ 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);
+ printk(KERN_ERR ZFCP_NAME": " fmt, ##args); \
+} while (0)
#endif
#if ZFCP_LOG_LEVEL_LIMIT < ZFCP_LOG_LEVEL_DEBUG
#else
extern u32 flags_dump;
# define ZFCP_LOG_FLAGS(level, fmt, args...) \
+do { \
if (level <= flags_dump) \
- _ZFCP_LOG(fmt , ##args)
+ _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 0xff000000
-#define ZFCP_SPECIFIC_FLAGS 0x00ffffff
+#define ZFCP_COMMON_FLAGS 0xfff00000
+#define ZFCP_SPECIFIC_FLAGS 0x000fffff
/* common status bits */
#define ZFCP_STATUS_COMMON_REMOVE 0x80000000
#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
ZFCP_STATUS_ADAPTER_REGISTERED)
-#define ZFCP_DID_NAMESERVER 0xFFFFFC
+/* 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_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
-#define ZFCP_STATUS_PORT_NAMESERVER \
+/* 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
wwn_t wwpn;
} __attribute__ ((packed));
-/* nameserver request CT_IU -- for requests where
- * a port identifier is required */
-struct ct_iu_ga_nxt_req {
- struct ct_hdr header;
- fc_id_t d_id;
-} __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));
-/* FS_ACC IU and data unit for GA_NXT nameserver request */
-struct ct_iu_ga_nxt_resp {
- struct ct_hdr header;
- u8 port_type;
- u8 port_id[3];
- u64 port_wwn;
- u8 port_symbolic_name_length;
- u8 port_symbolic_name[255];
- u64 node_wwn;
- u8 node_symbolic_name_length;
- u8 node_symbolic_name[255];
- u64 initial_process_associator;
- u8 node_ip[16];
- u32 cos;
- u8 fc4_types[32];
- u8 port_ip[16];
- u64 fabric_wwn;
- u8 reserved;
- u8 hard_address[3];
-} __attribute__ ((packed));
-
typedef void (*zfcp_send_ct_handler_t)(unsigned long);
-/* used to pass parameters to zfcp_send_ct() */
+/**
+ * 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;
unsigned int resp_count;
zfcp_send_ct_handler_t handler;
unsigned long handler_data;
- mempool_t *pool; /* mempool for ct not for fsf_req */
+ mempool_t *pool;
int timeout;
struct timer_list *timer;
struct completion *completion;
struct zfcp_port *port;
};
-typedef int (*zfcp_send_els_handler_t)(unsigned long);
-
-/* used to pass parameters to zfcp_send_els() */
-/* ToDo merge send_ct() and send_els() and corresponding structs */
+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_port *port;
+ 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_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 {
debug_info_t *abort_dbf;
debug_info_t *in_els_dbf;
debug_info_t *cmd_dbf;
- rwlock_t cmd_dbf_lock;
+ 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 */
};
/*
struct scsi_device *device; /* scsi device struct pointer */
struct zfcp_erp_action erp_action; /* pending error recovery */
atomic_t erp_counter;
- atomic_t scsi_add_work; /* used to synchronize */
- wait_queue_head_t scsi_add_wq; /* wait for scsi_add_device */
};
/* FSF request */
lists */
struct semaphore config_sema; /* serialises configuration
changes */
- struct notifier_block reboot_notifier; /* used to register cleanup
- functions */
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;
if (ZFCP_LOG_CHECK(level)) { \
_zfcp_hex_dump(addr, count); \
}
-/*
- * Not yet optimal but useful:
- * Waits until the condition is met or the timeout occurs.
- * The condition may be a function call. This allows to
- * execute some additional instructions in addition
- * to a simple condition check.
- * The timeout is modified on exit and holds the remaining time.
- * Thus it is zero if a timeout ocurred, i.e. the condition was
- * not met in the specified interval.
- */
-#define __ZFCP_WAIT_EVENT_TIMEOUT(timeout, condition) \
-do { \
- set_current_state(TASK_UNINTERRUPTIBLE); \
- while (!(condition) && timeout) \
- timeout = schedule_timeout(timeout); \
- current->state = TASK_RUNNING; \
-} while (0);
-
-#define ZFCP_WAIT_EVENT_TIMEOUT(waitqueue, timeout, condition) \
-do { \
- wait_queue_t entry; \
- init_waitqueue_entry(&entry, current); \
- add_wait_queue(&waitqueue, &entry); \
- __ZFCP_WAIT_EVENT_TIMEOUT(timeout, condition) \
- remove_wait_queue(&waitqueue, &entry); \
-} while (0);
#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))
git://git.onelab.eu / linux-2.6.git / blobdiff