-/*
- *
- * linux/drivers/s390/scsi/zfcp_def.h
- *
- * FCP adapter driver for IBM eServer zSeries
- *
- * (C) Copyright IBM Corp. 2002, 2004
+/*
+ * This file is part of the zfcp device driver for
+ * FCP adapters for IBM System z9 and zSeries.
*
- * 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.
- */
-
+ * (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
-#define ZFCP_DEF_REVISION "$Revision: 1.111 $"
-
/*************************** INCLUDES *****************************************/
#include <linux/init.h>
#include <linux/blkdev.h>
#include <linux/delay.h>
#include <linux/timer.h>
+#include <linux/slab.h>
+#include <linux/mempool.h>
+#include <linux/syscalls.h>
+#include <linux/scatterlist.h>
+#include <linux/ioctl.h>
#include <scsi/scsi.h>
#include <scsi/scsi_tcq.h>
#include <scsi/scsi_cmnd.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 "zfcp_dbf.h"
+#include "zfcp_fsf.h"
/********************* GENERAL DEFINES *********************************/
/* zfcp version number, it consists of major, minor, and patch-level number */
-#define ZFCP_VERSION "4.5.0"
+#define ZFCP_VERSION "4.8.0"
/**
* zfcp_sg_to_address - determine kernel address from struct scatterlist
static inline void *
zfcp_sg_to_address(struct scatterlist *list)
{
- return (void *) (page_address(list->page) + list->offset);
+ return sg_virt(list);
}
/**
* zfcp_address_to_sg - set up struct scatterlist from kernel address
* @address: kernel address
* @list: struct scatterlist
+ * @size: buffer size
*/
static inline void
-zfcp_address_to_sg(void *address, struct scatterlist *list)
+zfcp_address_to_sg(void *address, struct scatterlist *list, unsigned int size)
{
- list->page = virt_to_page(address);
- list->offset = ((unsigned long) address) & (PAGE_SIZE - 1);
+ sg_set_buf(list, address, size);
}
-/********************* 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 REQUEST_LIST_SIZE 128
-#define ZFCP_ERP_SCSI_LOW_MEM_TIMEOUT (100*HZ)
-#define ZFCP_SCSI_ER_TIMEOUT (100*HZ)
+/********************* SCSI SPECIFIC DEFINES *********************************/
+#define ZFCP_SCSI_ER_TIMEOUT (10*HZ)
/********************* CIO/QDIO SPECIFIC DEFINES *****************************/
#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
(ZFCP_MAX_SBALS_PER_REQ * ZFCP_MAX_SBALES_PER_SBAL - 2)
/* request ID + QTCB in SBALE 0 + 1 of first SBAL in chain */
+#define ZFCP_MAX_SECTORS (ZFCP_MAX_SBALES_PER_REQ * 8)
+ /* max. number of (data buffer) SBALEs in largest SBAL chain
+ multiplied with number of sectors per 4k block */
+
/* 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)
+#define ZFCP_TYPE2_RECOVERY_TIME 8 /* seconds */
/* queue polling (values in microseconds) */
#define ZFCP_MAX_INPUT_THRESHOLD 5000 /* FIXME: tune */
#define ZFCP_MIN_OUTPUT_THRESHOLD 1 /* ignored by QDIO layer */
#define QDIO_SCSI_QFMT 1 /* 1 for FSF */
+#define QBUFF_PER_PAGE (PAGE_SIZE / sizeof(struct qdio_buffer))
/********************* FSF SPECIFIC DEFINES *********************************/
#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_FIRST_SLEEP 1
#define ZFCP_EXCHANGE_CONFIG_DATA_RETRIES 7
-/* Retry 5 times every 2 second, then every minute */
-#define ZFCP_EXCHANGE_PORT_DATA_SHORT_RETRIES 5
-#define ZFCP_EXCHANGE_PORT_DATA_SHORT_SLEEP 200
-#define ZFCP_EXCHANGE_PORT_DATA_LONG_SLEEP 6000
-
/* timeout value for "default timer" for fsf requests */
-#define ZFCP_FSF_REQUEST_TIMEOUT (60*HZ);
+#define ZFCP_FSF_REQUEST_TIMEOUT (60*HZ)
/*************** FIBRE CHANNEL PROTOCOL SPECIFIC DEFINES ********************/
#define RSP_CODE_TASKMAN_FAILED 5
/* see fc-fs */
-#define LS_FAN 0x60000000
-#define LS_RSCN 0x61040000
+#define LS_RSCN 0x61040000
+#define LS_LOGO 0x05000000
+#define LS_PLOGI 0x03000000
struct fcp_rscn_head {
u8 command;
#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;
} __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 {
- struct {
- u64 fsf_reqid;
- u32 fsf_seqno;
- u64 fsf_issued;
- } new_fsf_req;
- 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_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
/*
* this allows removal of logging code by the preprocessor
- * (the most detailed log level still to be compiled in is specified,
+ * (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
/* logging routine for zfcp */
#define _ZFCP_LOG(fmt, args...) \
- printk(KERN_ERR ZFCP_NAME": %s(%d): " fmt, __FUNCTION__, \
+ printk(KERN_ERR ZFCP_NAME": %s(%d): " fmt, __func__, \
__LINE__ , ##args)
#define ZFCP_LOG(level, fmt, args...) \
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...)
+# define ZFCP_LOG_NORMAL(fmt, args...) do { } while (0)
#else
# define ZFCP_LOG_NORMAL(fmt, args...) \
do { \
#endif
#if ZFCP_LOG_LEVEL_LIMIT < ZFCP_LOG_LEVEL_INFO
-# define ZFCP_LOG_INFO(fmt, args...)
+# define ZFCP_LOG_INFO(fmt, args...) do { } while (0)
#else
# define ZFCP_LOG_INFO(fmt, args...) \
do { \
#endif
#if ZFCP_LOG_LEVEL_LIMIT < ZFCP_LOG_LEVEL_DEBUG
-# define ZFCP_LOG_DEBUG(fmt, args...)
+# 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...)
+# define ZFCP_LOG_TRACE(fmt, args...) do { } while (0)
#else
# define ZFCP_LOG_TRACE(fmt, args...) \
ZFCP_LOG(ZFCP_LOG_LEVEL_TRACE, fmt , ##args)
/*************** ADAPTER/PORT/UNIT AND FSF_REQ STATUS FLAGS ******************/
-/*
- * Note, the leftmost status byte is common among adapter, port
+/*
+ * 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_ADAPTER_LINK_UNPLUGGED 0x00000200
#define ZFCP_STATUS_ADAPTER_XPORT_OK 0x00000800
-#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_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_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
+#define ZFCP_STATUS_UNIT_SCSI_WORK_PENDING 0x00000020
/* FSF request status (this does not have a common part) */
#define ZFCP_STATUS_FSFREQ_NOT_INIT 0x00000000
* @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
*/
unsigned long handler_data;
mempool_t *pool;
int timeout;
- struct timer_list *timer;
struct completion *completion;
int status;
};
* @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
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 timer_list timer;
};
+struct fsf_latency_record {
+ u32 min;
+ u32 max;
+ u64 sum;
+};
+
+struct latency_cont {
+ struct fsf_latency_record channel;
+ struct fsf_latency_record fabric;
+ u64 counter;
+};
+
+struct zfcp_latencies {
+ struct latency_cont read;
+ struct latency_cont write;
+ struct latency_cont cmd;
+ spinlock_t lock;
+};
struct zfcp_adapter {
struct list_head list; /* list of adapters */
wwn_t peer_wwnn; /* P2P peer WWNN */
wwn_t peer_wwpn; /* P2P peer WWPN */
u32 peer_d_id; /* P2P peer D_ID */
- wwn_t physical_wwpn; /* WWPN of physical port */
- u32 physical_s_id; /* local FC port ID */
struct ccw_device *ccw_device; /* S/390 ccw device */
- u8 fc_service_class;
- u32 fc_topology; /* FC topology */
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 */
+ u16 timer_ticks; /* time int for a tick */
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 */
- spinlock_t fsf_req_list_lock; /* lock for ops on list of
- FSF requests */
- atomic_t fsf_reqs_active; /* # active FSF reqs */
+ 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
rwlock_t abort_lock; /* Protects against SCSI
stack abort/command
completion races */
- u16 status_read_failed; /* # failed status reads */
+ atomic_t stat_miss; /* # missing status reads*/
+ struct work_struct stat_work;
atomic_t status; /* status of this adapter */
struct list_head erp_ready_head; /* error recovery for this
adapter/devices */
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 *rec_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 rec_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_rec_dbf_record rec_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;
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.
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 */
+ 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;
+ struct zfcp_latencies latencies;
};
/* 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
+ u8 sbal_last; /* last SBAL for this request */
+ u8 sbal_limit; /* last possible SBAL for
this reuest */
- u8 sbal_curr; /* current SBAL during creation
- of request */
u8 sbale_curr; /* current SBALE during creation
of request */
+ u8 sbal_response; /* SBAL used in interrupt */
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 */
+ unsigned long data; /* private data of request */
+ struct timer_list timer; /* used for erp or scsi er */
struct zfcp_erp_action *erp_action; /* used if this request is
issued on behalf of erp */
mempool_t *pool; /* used if request was alloacted
/* driver data */
struct zfcp_data {
struct scsi_host_template scsi_host_template;
+ struct scsi_transport_template *scsi_transport_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
wwn_t init_wwpn;
fcp_lun_t init_fcp_lun;
char *driver_version;
+ struct kmem_cache *fsf_req_qtcb_cache;
+ struct kmem_cache *sr_buffer_cache;
+ struct kmem_cache *gid_pn_cache;
};
/**
#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_qtcb {
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)
#define zfcp_get_busid_by_unit(unit) (zfcp_get_busid_by_port(unit->port))
/*
+ * Helper functions for request ID management.
+ */
+static inline int zfcp_reqlist_hash(unsigned long req_id)
+{
+ return req_id % REQUEST_LIST_SIZE;
+}
+
+static inline void zfcp_reqlist_add(struct zfcp_adapter *adapter,
+ struct zfcp_fsf_req *fsf_req)
+{
+ unsigned int idx;
+
+ idx = zfcp_reqlist_hash(fsf_req->req_id);
+ list_add_tail(&fsf_req->list, &adapter->req_list[idx]);
+}
+
+static inline void zfcp_reqlist_remove(struct zfcp_adapter *adapter,
+ struct zfcp_fsf_req *fsf_req)
+{
+ list_del(&fsf_req->list);
+}
+
+static inline struct zfcp_fsf_req *
+zfcp_reqlist_find(struct zfcp_adapter *adapter, unsigned long req_id)
+{
+ struct zfcp_fsf_req *request;
+ unsigned int idx;
+
+ idx = zfcp_reqlist_hash(req_id);
+ list_for_each_entry(request, &adapter->req_list[idx], list)
+ if (request->req_id == req_id)
+ return request;
+ return NULL;
+}
+
+static inline struct zfcp_fsf_req *
+zfcp_reqlist_find_safe(struct zfcp_adapter *adapter, struct zfcp_fsf_req *req)
+{
+ struct zfcp_fsf_req *request;
+ unsigned int idx;
+
+ for (idx = 0; idx < REQUEST_LIST_SIZE; idx++) {
+ list_for_each_entry(request, &adapter->req_list[idx], list)
+ if (request == req)
+ return request;
+ }
+ return NULL;
+}
+
+/*
* functions needed for reference/usage counting
*/
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff