[SCSI] ibmvfc: IBM Power Virtual Fibre Channel Adapter Client Driver
This patch adds a new device driver to support the Virtual Fibre Channel
interface on IBM Power based servers. The Virtual I/O Server on IBM Power
servers utilizes N-Port ID Virtualization to export a Virtual Fibre Channel
adapter to the client. This driver is the client device driver.
Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
diff --git a/drivers/scsi/ibmvscsi/ibmvfc.h b/drivers/scsi/ibmvscsi/ibmvfc.h
new file mode 100644
index 0000000..057f3c0
--- /dev/null
+++ b/drivers/scsi/ibmvscsi/ibmvfc.h
@@ -0,0 +1,682 @@
+/*
+ * ibmvfc.h -- driver for IBM Power Virtual Fibre Channel Adapter
+ *
+ * Written By: Brian King <brking@linux.vnet.ibm.com>, IBM Corporation
+ *
+ * Copyright (C) IBM Corporation, 2008
+ *
+ * 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 of the License, 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#ifndef _IBMVFC_H
+#define _IBMVFC_H
+
+#include <linux/list.h>
+#include <linux/types.h>
+#include "viosrp.h"
+
+#define IBMVFC_NAME "ibmvfc"
+#define IBMVFC_DRIVER_VERSION "1.0.0"
+#define IBMVFC_DRIVER_DATE "(July 1, 2008)"
+
+#define IBMVFC_DEFAULT_TIMEOUT 15
+#define IBMVFC_INIT_TIMEOUT 30
+#define IBMVFC_MAX_REQUESTS_DEFAULT 100
+
+#define IBMVFC_DEBUG 0
+#define IBMVFC_MAX_TARGETS 1024
+#define IBMVFC_MAX_LUN 0xffffffff
+#define IBMVFC_MAX_SECTORS 0xffffu
+#define IBMVFC_MAX_DISC_THREADS 4
+#define IBMVFC_TGT_MEMPOOL_SZ 64
+#define IBMVFC_MAX_CMDS_PER_LUN 64
+#define IBMVFC_MAX_INIT_RETRIES 3
+#define IBMVFC_DEV_LOSS_TMO (5 * 60)
+#define IBMVFC_DEFAULT_LOG_LEVEL 2
+#define IBMVFC_MAX_CDB_LEN 16
+
+/*
+ * Ensure we have resources for ERP and initialization:
+ * 1 for ERP
+ * 1 for initialization
+ * 1 for each discovery thread
+ */
+#define IBMVFC_NUM_INTERNAL_REQ (1 + 1 + disc_threads)
+
+#define IBMVFC_MAD_SUCCESS 0x00
+#define IBMVFC_MAD_NOT_SUPPORTED 0xF1
+#define IBMVFC_MAD_FAILED 0xF7
+#define IBMVFC_MAD_DRIVER_FAILED 0xEE
+#define IBMVFC_MAD_CRQ_ERROR 0xEF
+
+enum ibmvfc_crq_valid {
+ IBMVFC_CRQ_CMD_RSP = 0x80,
+ IBMVFC_CRQ_INIT_RSP = 0xC0,
+ IBMVFC_CRQ_XPORT_EVENT = 0xFF,
+};
+
+enum ibmvfc_crq_format {
+ IBMVFC_CRQ_INIT = 0x01,
+ IBMVFC_CRQ_INIT_COMPLETE = 0x02,
+ IBMVFC_PARTITION_MIGRATED = 0x06,
+};
+
+enum ibmvfc_cmd_status_flags {
+ IBMVFC_FABRIC_MAPPED = 0x0001,
+ IBMVFC_VIOS_FAILURE = 0x0002,
+ IBMVFC_FC_FAILURE = 0x0004,
+ IBMVFC_FC_SCSI_ERROR = 0x0008,
+ IBMVFC_HW_EVENT_LOGGED = 0x0010,
+ IBMVFC_VIOS_LOGGED = 0x0020,
+};
+
+enum ibmvfc_fabric_mapped_errors {
+ IBMVFC_UNABLE_TO_ESTABLISH = 0x0001,
+ IBMVFC_XPORT_FAULT = 0x0002,
+ IBMVFC_CMD_TIMEOUT = 0x0003,
+ IBMVFC_ENETDOWN = 0x0004,
+ IBMVFC_HW_FAILURE = 0x0005,
+ IBMVFC_LINK_DOWN_ERR = 0x0006,
+ IBMVFC_LINK_DEAD_ERR = 0x0007,
+ IBMVFC_UNABLE_TO_REGISTER = 0x0008,
+ IBMVFC_XPORT_BUSY = 0x000A,
+ IBMVFC_XPORT_DEAD = 0x000B,
+ IBMVFC_CONFIG_ERROR = 0x000C,
+ IBMVFC_NAME_SERVER_FAIL = 0x000D,
+ IBMVFC_LINK_HALTED = 0x000E,
+ IBMVFC_XPORT_GENERAL = 0x8000,
+};
+
+enum ibmvfc_vios_errors {
+ IBMVFC_CRQ_FAILURE = 0x0001,
+ IBMVFC_SW_FAILURE = 0x0002,
+ IBMVFC_INVALID_PARAMETER = 0x0003,
+ IBMVFC_MISSING_PARAMETER = 0x0004,
+ IBMVFC_HOST_IO_BUS = 0x0005,
+ IBMVFC_TRANS_CANCELLED = 0x0006,
+ IBMVFC_TRANS_CANCELLED_IMPLICIT = 0x0007,
+ IBMVFC_INSUFFICIENT_RESOURCE = 0x0008,
+ IBMVFC_COMMAND_FAILED = 0x8000,
+};
+
+enum ibmvfc_mad_types {
+ IBMVFC_NPIV_LOGIN = 0x0001,
+ IBMVFC_DISC_TARGETS = 0x0002,
+ IBMVFC_PORT_LOGIN = 0x0004,
+ IBMVFC_PROCESS_LOGIN = 0x0008,
+ IBMVFC_QUERY_TARGET = 0x0010,
+ IBMVFC_IMPLICIT_LOGOUT = 0x0040,
+ IBMVFC_TMF_MAD = 0x0100,
+};
+
+struct ibmvfc_mad_common {
+ u32 version;
+ u32 reserved;
+ u32 opcode;
+ u16 status;
+ u16 length;
+ u64 tag;
+}__attribute__((packed, aligned (8)));
+
+struct ibmvfc_npiv_login_mad {
+ struct ibmvfc_mad_common common;
+ struct srp_direct_buf buffer;
+}__attribute__((packed, aligned (8)));
+
+#define IBMVFC_MAX_NAME 256
+
+struct ibmvfc_npiv_login {
+ u32 ostype;
+#define IBMVFC_OS_LINUX 0x02
+ u32 pad;
+ u64 max_dma_len;
+ u32 max_payload;
+ u32 max_response;
+ u32 partition_num;
+ u32 vfc_frame_version;
+ u16 fcp_version;
+ u16 flags;
+#define IBMVFC_CLIENT_MIGRATED 0x01
+#define IBMVFC_FLUSH_ON_HALT 0x02
+ u32 max_cmds;
+ u64 capabilities;
+#define IBMVFC_CAN_MIGRATE 0x01
+ u64 node_name;
+ struct srp_direct_buf async;
+ u8 partition_name[IBMVFC_MAX_NAME];
+ u8 device_name[IBMVFC_MAX_NAME];
+ u8 drc_name[IBMVFC_MAX_NAME];
+ u64 reserved2[2];
+}__attribute__((packed, aligned (8)));
+
+struct ibmvfc_common_svc_parms {
+ u16 fcph_version;
+ u16 b2b_credit;
+ u16 features;
+ u16 bb_rcv_sz; /* upper nibble is BB_SC_N */
+ u32 ratov;
+ u32 edtov;
+}__attribute__((packed, aligned (4)));
+
+struct ibmvfc_service_parms {
+ struct ibmvfc_common_svc_parms common;
+ u8 port_name[8];
+ u8 node_name[8];
+ u32 class1_parms[4];
+ u32 class2_parms[4];
+ u32 class3_parms[4];
+ u32 obsolete[4];
+ u32 vendor_version[4];
+ u32 services_avail[2];
+ u32 ext_len;
+ u32 reserved[30];
+ u32 clk_sync_qos[2];
+}__attribute__((packed, aligned (4)));
+
+struct ibmvfc_npiv_login_resp {
+ u32 version;
+ u16 status;
+ u16 error;
+ u32 flags;
+#define IBMVFC_NATIVE_FC 0x01
+#define IBMVFC_CAN_FLUSH_ON_HALT 0x08
+ u32 reserved;
+ u64 capabilites;
+ u32 max_cmds;
+ u32 scsi_id_sz;
+ u64 max_dma_len;
+ u64 scsi_id;
+ u64 port_name;
+ u64 node_name;
+ u64 link_speed;
+ u8 partition_name[IBMVFC_MAX_NAME];
+ u8 device_name[IBMVFC_MAX_NAME];
+ u8 port_loc_code[IBMVFC_MAX_NAME];
+ u8 drc_name[IBMVFC_MAX_NAME];
+ struct ibmvfc_service_parms service_parms;
+ u64 reserved2;
+}__attribute__((packed, aligned (8)));
+
+union ibmvfc_npiv_login_data {
+ struct ibmvfc_npiv_login login;
+ struct ibmvfc_npiv_login_resp resp;
+}__attribute__((packed, aligned (8)));
+
+struct ibmvfc_discover_targets_buf {
+ u32 scsi_id[1];
+#define IBMVFC_DISC_TGT_SCSI_ID_MASK 0x00ffffff
+};
+
+struct ibmvfc_discover_targets {
+ struct ibmvfc_mad_common common;
+ struct srp_direct_buf buffer;
+ u32 flags;
+ u16 status;
+ u16 error;
+ u32 bufflen;
+ u32 num_avail;
+ u32 num_written;
+ u64 reserved[2];
+}__attribute__((packed, aligned (8)));
+
+enum ibmvfc_fc_reason {
+ IBMVFC_INVALID_ELS_CMD_CODE = 0x01,
+ IBMVFC_INVALID_VERSION = 0x02,
+ IBMVFC_LOGICAL_ERROR = 0x03,
+ IBMVFC_INVALID_CT_IU_SIZE = 0x04,
+ IBMVFC_LOGICAL_BUSY = 0x05,
+ IBMVFC_PROTOCOL_ERROR = 0x07,
+ IBMVFC_UNABLE_TO_PERFORM_REQ = 0x09,
+ IBMVFC_CMD_NOT_SUPPORTED = 0x0B,
+ IBMVFC_SERVER_NOT_AVAIL = 0x0D,
+ IBMVFC_CMD_IN_PROGRESS = 0x0E,
+ IBMVFC_VENDOR_SPECIFIC = 0xFF,
+};
+
+enum ibmvfc_fc_type {
+ IBMVFC_FABRIC_REJECT = 0x01,
+ IBMVFC_PORT_REJECT = 0x02,
+ IBMVFC_LS_REJECT = 0x03,
+ IBMVFC_FABRIC_BUSY = 0x04,
+ IBMVFC_PORT_BUSY = 0x05,
+ IBMVFC_BASIC_REJECT = 0x06,
+};
+
+enum ibmvfc_gs_explain {
+ IBMVFC_PORT_NAME_NOT_REG = 0x02,
+};
+
+struct ibmvfc_port_login {
+ struct ibmvfc_mad_common common;
+ u64 scsi_id;
+ u16 reserved;
+ u16 fc_service_class;
+ u32 blksz;
+ u32 hdr_per_blk;
+ u16 status;
+ u16 error; /* also fc_reason */
+ u16 fc_explain;
+ u16 fc_type;
+ u32 reserved2;
+ struct ibmvfc_service_parms service_parms;
+ struct ibmvfc_service_parms service_parms_change;
+ u64 reserved3[2];
+}__attribute__((packed, aligned (8)));
+
+struct ibmvfc_prli_svc_parms {
+ u8 type;
+#define IBMVFC_SCSI_FCP_TYPE 0x08
+ u8 type_ext;
+ u16 flags;
+#define IBMVFC_PRLI_ORIG_PA_VALID 0x8000
+#define IBMVFC_PRLI_RESP_PA_VALID 0x4000
+#define IBMVFC_PRLI_EST_IMG_PAIR 0x2000
+ u32 orig_pa;
+ u32 resp_pa;
+ u32 service_parms;
+#define IBMVFC_PRLI_TASK_RETRY 0x00000200
+#define IBMVFC_PRLI_RETRY 0x00000100
+#define IBMVFC_PRLI_DATA_OVERLAY 0x00000040
+#define IBMVFC_PRLI_INITIATOR_FUNC 0x00000020
+#define IBMVFC_PRLI_TARGET_FUNC 0x00000010
+#define IBMVFC_PRLI_READ_FCP_XFER_RDY_DISABLED 0x00000002
+#define IBMVFC_PRLI_WR_FCP_XFER_RDY_DISABLED 0x00000001
+}__attribute__((packed, aligned (4)));
+
+struct ibmvfc_process_login {
+ struct ibmvfc_mad_common common;
+ u64 scsi_id;
+ struct ibmvfc_prli_svc_parms parms;
+ u8 reserved[48];
+ u16 status;
+ u16 error; /* also fc_reason */
+ u32 reserved2;
+ u64 reserved3[2];
+}__attribute__((packed, aligned (8)));
+
+struct ibmvfc_query_tgt {
+ struct ibmvfc_mad_common common;
+ u64 wwpn;
+ u64 scsi_id;
+ u16 status;
+ u16 error;
+ u16 fc_explain;
+ u16 fc_type;
+ u64 reserved[2];
+}__attribute__((packed, aligned (8)));
+
+struct ibmvfc_implicit_logout {
+ struct ibmvfc_mad_common common;
+ u64 old_scsi_id;
+ u64 reserved[2];
+}__attribute__((packed, aligned (8)));
+
+struct ibmvfc_tmf {
+ struct ibmvfc_mad_common common;
+ u64 scsi_id;
+ struct scsi_lun lun;
+ u32 flags;
+#define IBMVFC_TMF_ABORT_TASK 0x02
+#define IBMVFC_TMF_ABORT_TASK_SET 0x04
+#define IBMVFC_TMF_LUN_RESET 0x10
+#define IBMVFC_TMF_TGT_RESET 0x20
+#define IBMVFC_TMF_LUA_VALID 0x40
+ u32 cancel_key;
+ u32 my_cancel_key;
+#define IBMVFC_TMF_CANCEL_KEY 0x80000000
+ u32 pad;
+ u64 reserved[2];
+}__attribute__((packed, aligned (8)));
+
+enum ibmvfc_fcp_rsp_info_codes {
+ RSP_NO_FAILURE = 0x00,
+ RSP_TMF_REJECTED = 0x04,
+ RSP_TMF_FAILED = 0x05,
+ RSP_TMF_INVALID_LUN = 0x09,
+};
+
+struct ibmvfc_fcp_rsp_info {
+ u16 reserved;
+ u8 rsp_code;
+ u8 reserved2[4];
+}__attribute__((packed, aligned (2)));
+
+enum ibmvfc_fcp_rsp_flags {
+ FCP_BIDI_RSP = 0x80,
+ FCP_BIDI_READ_RESID_UNDER = 0x40,
+ FCP_BIDI_READ_RESID_OVER = 0x20,
+ FCP_CONF_REQ = 0x10,
+ FCP_RESID_UNDER = 0x08,
+ FCP_RESID_OVER = 0x04,
+ FCP_SNS_LEN_VALID = 0x02,
+ FCP_RSP_LEN_VALID = 0x01,
+};
+
+union ibmvfc_fcp_rsp_data {
+ struct ibmvfc_fcp_rsp_info info;
+ u8 sense[SCSI_SENSE_BUFFERSIZE + sizeof(struct ibmvfc_fcp_rsp_info)];
+}__attribute__((packed, aligned (8)));
+
+struct ibmvfc_fcp_rsp {
+ u64 reserved;
+ u16 retry_delay_timer;
+ u8 flags;
+ u8 scsi_status;
+ u32 fcp_resid;
+ u32 fcp_sense_len;
+ u32 fcp_rsp_len;
+ union ibmvfc_fcp_rsp_data data;
+}__attribute__((packed, aligned (8)));
+
+enum ibmvfc_cmd_flags {
+ IBMVFC_SCATTERLIST = 0x0001,
+ IBMVFC_NO_MEM_DESC = 0x0002,
+ IBMVFC_READ = 0x0004,
+ IBMVFC_WRITE = 0x0008,
+ IBMVFC_TMF = 0x0080,
+ IBMVFC_CLASS_3_ERR = 0x0100,
+};
+
+enum ibmvfc_fc_task_attr {
+ IBMVFC_SIMPLE_TASK = 0x00,
+ IBMVFC_HEAD_OF_QUEUE = 0x01,
+ IBMVFC_ORDERED_TASK = 0x02,
+ IBMVFC_ACA_TASK = 0x04,
+};
+
+enum ibmvfc_fc_tmf_flags {
+ IBMVFC_ABORT_TASK_SET = 0x02,
+ IBMVFC_LUN_RESET = 0x10,
+ IBMVFC_TARGET_RESET = 0x20,
+};
+
+struct ibmvfc_fcp_cmd_iu {
+ struct scsi_lun lun;
+ u8 crn;
+ u8 pri_task_attr;
+ u8 tmf_flags;
+ u8 add_cdb_len;
+#define IBMVFC_RDDATA 0x02
+#define IBMVFC_WRDATA 0x01
+ u8 cdb[IBMVFC_MAX_CDB_LEN];
+ u32 xfer_len;
+}__attribute__((packed, aligned (4)));
+
+struct ibmvfc_cmd {
+ u64 task_tag;
+ u32 frame_type;
+ u32 payload_len;
+ u32 resp_len;
+ u32 adapter_resid;
+ u16 status;
+ u16 error;
+ u16 flags;
+ u16 response_flags;
+#define IBMVFC_ADAPTER_RESID_VALID 0x01
+ u32 cancel_key;
+ u32 exchange_id;
+ struct srp_direct_buf ext_func;
+ struct srp_direct_buf ioba;
+ struct srp_direct_buf resp;
+ u64 correlation;
+ u64 tgt_scsi_id;
+ u64 tag;
+ u64 reserved3[2];
+ struct ibmvfc_fcp_cmd_iu iu;
+ struct ibmvfc_fcp_rsp rsp;
+}__attribute__((packed, aligned (8)));
+
+struct ibmvfc_trace_start_entry {
+ u32 xfer_len;
+}__attribute__((packed));
+
+struct ibmvfc_trace_end_entry {
+ u16 status;
+ u16 error;
+ u8 fcp_rsp_flags;
+ u8 rsp_code;
+ u8 scsi_status;
+ u8 reserved;
+}__attribute__((packed));
+
+struct ibmvfc_trace_entry {
+ struct ibmvfc_event *evt;
+ u32 time;
+ u32 scsi_id;
+ u32 lun;
+ u8 fmt;
+ u8 op_code;
+ u8 tmf_flags;
+ u8 type;
+#define IBMVFC_TRC_START 0x00
+#define IBMVFC_TRC_END 0xff
+ union {
+ struct ibmvfc_trace_start_entry start;
+ struct ibmvfc_trace_end_entry end;
+ } u;
+}__attribute__((packed, aligned (8)));
+
+enum ibmvfc_crq_formats {
+ IBMVFC_CMD_FORMAT = 0x01,
+ IBMVFC_ASYNC_EVENT = 0x02,
+ IBMVFC_MAD_FORMAT = 0x04,
+};
+
+enum ibmvfc_async_event {
+ IBMVFC_AE_ELS_PLOGI = 0x0001,
+ IBMVFC_AE_ELS_LOGO = 0x0002,
+ IBMVFC_AE_ELS_PRLO = 0x0004,
+ IBMVFC_AE_SCN_NPORT = 0x0008,
+ IBMVFC_AE_SCN_GROUP = 0x0010,
+ IBMVFC_AE_SCN_DOMAIN = 0x0020,
+ IBMVFC_AE_SCN_FABRIC = 0x0040,
+ IBMVFC_AE_LINK_UP = 0x0080,
+ IBMVFC_AE_LINK_DOWN = 0x0100,
+ IBMVFC_AE_LINK_DEAD = 0x0200,
+ IBMVFC_AE_HALT = 0x0400,
+ IBMVFC_AE_RESUME = 0x0800,
+ IBMVFC_AE_ADAPTER_FAILED = 0x1000,
+};
+
+struct ibmvfc_crq {
+ u8 valid;
+ u8 format;
+ u8 reserved[6];
+ u64 ioba;
+}__attribute__((packed, aligned (8)));
+
+struct ibmvfc_crq_queue {
+ struct ibmvfc_crq *msgs;
+ int size, cur;
+ dma_addr_t msg_token;
+};
+
+struct ibmvfc_async_crq {
+ u8 valid;
+ u8 pad[3];
+ u32 pad2;
+ u64 event;
+ u64 scsi_id;
+ u64 wwpn;
+ u64 node_name;
+ u64 reserved;
+}__attribute__((packed, aligned (8)));
+
+struct ibmvfc_async_crq_queue {
+ struct ibmvfc_async_crq *msgs;
+ int size, cur;
+ dma_addr_t msg_token;
+};
+
+union ibmvfc_iu {
+ struct ibmvfc_mad_common mad_common;
+ struct ibmvfc_npiv_login_mad npiv_login;
+ struct ibmvfc_discover_targets discover_targets;
+ struct ibmvfc_port_login plogi;
+ struct ibmvfc_process_login prli;
+ struct ibmvfc_query_tgt query_tgt;
+ struct ibmvfc_implicit_logout implicit_logout;
+ struct ibmvfc_tmf tmf;
+ struct ibmvfc_cmd cmd;
+}__attribute__((packed, aligned (8)));
+
+enum ibmvfc_target_action {
+ IBMVFC_TGT_ACTION_NONE = 0,
+ IBMVFC_TGT_ACTION_INIT,
+ IBMVFC_TGT_ACTION_INIT_WAIT,
+ IBMVFC_TGT_ACTION_ADD_RPORT,
+ IBMVFC_TGT_ACTION_DEL_RPORT,
+};
+
+struct ibmvfc_target {
+ struct list_head queue;
+ struct ibmvfc_host *vhost;
+ u64 scsi_id;
+ u64 new_scsi_id;
+ struct fc_rport *rport;
+ int target_id;
+ enum ibmvfc_target_action action;
+ int need_login;
+ int init_retries;
+ struct ibmvfc_service_parms service_parms;
+ struct ibmvfc_service_parms service_parms_change;
+ struct fc_rport_identifiers ids;
+ void (*job_step) (struct ibmvfc_target *);
+ struct kref kref;
+};
+
+/* a unit of work for the hosting partition */
+struct ibmvfc_event {
+ struct list_head queue;
+ struct ibmvfc_host *vhost;
+ struct ibmvfc_target *tgt;
+ struct scsi_cmnd *cmnd;
+ atomic_t free;
+ union ibmvfc_iu *xfer_iu;
+ void (*done) (struct ibmvfc_event *);
+ struct ibmvfc_crq crq;
+ union ibmvfc_iu iu;
+ union ibmvfc_iu *sync_iu;
+ struct srp_direct_buf *ext_list;
+ dma_addr_t ext_list_token;
+ struct completion comp;
+ struct timer_list timer;
+};
+
+/* a pool of event structs for use */
+struct ibmvfc_event_pool {
+ struct ibmvfc_event *events;
+ u32 size;
+ union ibmvfc_iu *iu_storage;
+ dma_addr_t iu_token;
+};
+
+enum ibmvfc_host_action {
+ IBMVFC_HOST_ACTION_NONE = 0,
+ IBMVFC_HOST_ACTION_INIT,
+ IBMVFC_HOST_ACTION_INIT_WAIT,
+ IBMVFC_HOST_ACTION_QUERY,
+ IBMVFC_HOST_ACTION_QUERY_TGTS,
+ IBMVFC_HOST_ACTION_TGT_DEL,
+ IBMVFC_HOST_ACTION_ALLOC_TGTS,
+ IBMVFC_HOST_ACTION_TGT_INIT,
+ IBMVFC_HOST_ACTION_TGT_ADD,
+};
+
+enum ibmvfc_host_state {
+ IBMVFC_NO_CRQ = 0,
+ IBMVFC_INITIALIZING,
+ IBMVFC_ACTIVE,
+ IBMVFC_HALTED,
+ IBMVFC_LINK_DOWN,
+ IBMVFC_LINK_DEAD,
+ IBMVFC_HOST_OFFLINE,
+};
+
+struct ibmvfc_host {
+ char name[8];
+ struct list_head queue;
+ struct Scsi_Host *host;
+ enum ibmvfc_host_state state;
+ enum ibmvfc_host_action action;
+#define IBMVFC_NUM_TRACE_INDEX_BITS 8
+#define IBMVFC_NUM_TRACE_ENTRIES (1 << IBMVFC_NUM_TRACE_INDEX_BITS)
+#define IBMVFC_TRACE_SIZE (sizeof(struct ibmvfc_trace_entry) * IBMVFC_NUM_TRACE_ENTRIES)
+ struct ibmvfc_trace_entry *trace;
+ u32 trace_index:IBMVFC_NUM_TRACE_INDEX_BITS;
+ int num_targets;
+ struct list_head targets;
+ struct list_head sent;
+ struct list_head free;
+ struct device *dev;
+ struct ibmvfc_event_pool pool;
+ struct dma_pool *sg_pool;
+ mempool_t *tgt_pool;
+ struct ibmvfc_crq_queue crq;
+ struct ibmvfc_async_crq_queue async_crq;
+ struct ibmvfc_npiv_login login_info;
+ union ibmvfc_npiv_login_data *login_buf;
+ dma_addr_t login_buf_dma;
+ int disc_buf_sz;
+ int log_level;
+ struct ibmvfc_discover_targets_buf *disc_buf;
+ int task_set;
+ int init_retries;
+ int discovery_threads;
+ int client_migrated;
+ int reinit;
+ int events_to_log;
+#define IBMVFC_AE_LINKUP 0x0001
+#define IBMVFC_AE_LINKDOWN 0x0002
+#define IBMVFC_AE_RSCN 0x0004
+ dma_addr_t disc_buf_dma;
+ unsigned int partition_number;
+ char partition_name[97];
+ void (*job_step) (struct ibmvfc_host *);
+ struct task_struct *work_thread;
+ wait_queue_head_t init_wait_q;
+ wait_queue_head_t work_wait_q;
+};
+
+#define DBG_CMD(CMD) do { if (ibmvfc_debug) CMD; } while (0)
+
+#define tgt_dbg(t, fmt, ...) \
+ DBG_CMD(dev_info((t)->vhost->dev, "%lX: " fmt, (t)->scsi_id, ##__VA_ARGS__))
+
+#define tgt_err(t, fmt, ...) \
+ dev_err((t)->vhost->dev, "%lX: " fmt, (t)->scsi_id, ##__VA_ARGS__)
+
+#define ibmvfc_dbg(vhost, ...) \
+ DBG_CMD(dev_info((vhost)->dev, ##__VA_ARGS__))
+
+#define ibmvfc_log(vhost, level, ...) \
+ do { \
+ if (level >= (vhost)->log_level) \
+ dev_err((vhost)->dev, ##__VA_ARGS__); \
+ } while (0)
+
+#define ENTER DBG_CMD(printk(KERN_INFO IBMVFC_NAME": Entering %s\n", __FUNCTION__))
+#define LEAVE DBG_CMD(printk(KERN_INFO IBMVFC_NAME": Leaving %s\n", __FUNCTION__))
+
+#ifdef CONFIG_SCSI_IBMVFC_TRACE
+#define ibmvfc_create_trace_file(kobj, attr) sysfs_create_bin_file(kobj, attr)
+#define ibmvfc_remove_trace_file(kobj, attr) sysfs_remove_bin_file(kobj, attr)
+#else
+#define ibmvfc_create_trace_file(kobj, attr) 0
+#define ibmvfc_remove_trace_file(kobj, attr) do { } while (0)
+#endif
+
+#endif