Swen Schillig | 41fa2ad | 2007-09-07 09:15:31 +0200 | [diff] [blame] | 1 | /* |
Christof Schmitt | 553448f | 2008-06-10 18:20:58 +0200 | [diff] [blame] | 2 | * zfcp device driver |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3 | * |
Christof Schmitt | 553448f | 2008-06-10 18:20:58 +0200 | [diff] [blame] | 4 | * Interface to Linux SCSI midlayer. |
Swen Schillig | 41fa2ad | 2007-09-07 09:15:31 +0200 | [diff] [blame] | 5 | * |
Christof Schmitt | 615f59e | 2010-02-17 11:18:56 +0100 | [diff] [blame] | 6 | * Copyright IBM Corporation 2002, 2010 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | */ |
| 8 | |
Christof Schmitt | ecf39d4 | 2008-12-25 13:39:53 +0100 | [diff] [blame] | 9 | #define KMSG_COMPONENT "zfcp" |
| 10 | #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt |
| 11 | |
Christof Schmitt | 4318e08 | 2009-11-24 16:54:08 +0100 | [diff] [blame] | 12 | #include <linux/types.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 13 | #include <linux/slab.h> |
Christof Schmitt | 4318e08 | 2009-11-24 16:54:08 +0100 | [diff] [blame] | 14 | #include <scsi/fc/fc_fcp.h> |
Felix Beck | ef3eb71 | 2010-07-16 15:37:42 +0200 | [diff] [blame] | 15 | #include <scsi/scsi_eh.h> |
Arun Sharma | 60063497 | 2011-07-26 16:09:06 -0700 | [diff] [blame] | 16 | #include <linux/atomic.h> |
Christof Schmitt | dcd20e2 | 2009-08-18 15:43:08 +0200 | [diff] [blame] | 17 | #include "zfcp_ext.h" |
| 18 | #include "zfcp_dbf.h" |
Christof Schmitt | 7c7dc19 | 2009-11-24 16:54:13 +0100 | [diff] [blame] | 19 | #include "zfcp_fc.h" |
Christof Schmitt | b6bd2fb | 2010-02-17 11:18:50 +0100 | [diff] [blame] | 20 | #include "zfcp_reqlist.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 21 | |
Christof Schmitt | a40a1ba | 2009-05-15 13:18:16 +0200 | [diff] [blame] | 22 | static unsigned int default_depth = 32; |
| 23 | module_param_named(queue_depth, default_depth, uint, 0600); |
| 24 | MODULE_PARM_DESC(queue_depth, "Default queue depth for new SCSI devices"); |
| 25 | |
Felix Beck | ef3eb71 | 2010-07-16 15:37:42 +0200 | [diff] [blame] | 26 | static bool enable_dif; |
Steffen Maier | cc405ac | 2011-08-15 14:40:30 +0200 | [diff] [blame^] | 27 | module_param_named(dif, enable_dif, bool, 0400); |
Felix Beck | ef3eb71 | 2010-07-16 15:37:42 +0200 | [diff] [blame] | 28 | MODULE_PARM_DESC(dif, "Enable DIF/DIX data integrity support"); |
Felix Beck | ef3eb71 | 2010-07-16 15:37:42 +0200 | [diff] [blame] | 29 | |
Christof Schmitt | 0d81b4e | 2010-12-08 17:30:46 +0100 | [diff] [blame] | 30 | static bool allow_lun_scan = 1; |
| 31 | module_param(allow_lun_scan, bool, 0600); |
| 32 | MODULE_PARM_DESC(allow_lun_scan, "For NPIV, scan and attach all storage LUNs"); |
| 33 | |
Mike Christie | e881a17 | 2009-10-15 17:46:39 -0700 | [diff] [blame] | 34 | static int zfcp_scsi_change_queue_depth(struct scsi_device *sdev, int depth, |
| 35 | int reason) |
Christof Schmitt | a40a1ba | 2009-05-15 13:18:16 +0200 | [diff] [blame] | 36 | { |
Christof Schmitt | 42e62a7 | 2009-10-15 17:47:11 -0700 | [diff] [blame] | 37 | switch (reason) { |
| 38 | case SCSI_QDEPTH_DEFAULT: |
| 39 | scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), depth); |
| 40 | break; |
| 41 | case SCSI_QDEPTH_QFULL: |
| 42 | scsi_track_queue_full(sdev, depth); |
| 43 | break; |
| 44 | case SCSI_QDEPTH_RAMP_UP: |
| 45 | scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), depth); |
| 46 | break; |
| 47 | default: |
Mike Christie | e881a17 | 2009-10-15 17:46:39 -0700 | [diff] [blame] | 48 | return -EOPNOTSUPP; |
Christof Schmitt | 42e62a7 | 2009-10-15 17:47:11 -0700 | [diff] [blame] | 49 | } |
Christof Schmitt | a40a1ba | 2009-05-15 13:18:16 +0200 | [diff] [blame] | 50 | return sdev->queue_depth; |
| 51 | } |
| 52 | |
Christof Schmitt | b62a8d9 | 2010-09-08 14:39:55 +0200 | [diff] [blame] | 53 | static void zfcp_scsi_slave_destroy(struct scsi_device *sdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | { |
Christof Schmitt | b62a8d9 | 2010-09-08 14:39:55 +0200 | [diff] [blame] | 55 | struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); |
| 56 | |
| 57 | zfcp_erp_lun_shutdown_wait(sdev, "scssd_1"); |
| 58 | put_device(&zfcp_sdev->port->dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 59 | } |
| 60 | |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 61 | static int zfcp_scsi_slave_configure(struct scsi_device *sdp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 62 | { |
| 63 | if (sdp->tagged_supported) |
Christof Schmitt | a40a1ba | 2009-05-15 13:18:16 +0200 | [diff] [blame] | 64 | scsi_adjust_queue_depth(sdp, MSG_SIMPLE_TAG, default_depth); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 65 | else |
| 66 | scsi_adjust_queue_depth(sdp, 0, 1); |
| 67 | return 0; |
| 68 | } |
| 69 | |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 70 | static void zfcp_scsi_command_fail(struct scsi_cmnd *scpnt, int result) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 71 | { |
Martin Petermann | feac6a0 | 2008-07-02 10:56:35 +0200 | [diff] [blame] | 72 | set_host_byte(scpnt, result); |
Swen Schillig | 250a135 | 2010-12-02 15:16:15 +0100 | [diff] [blame] | 73 | zfcp_dbf_scsi_fail_send(scpnt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 74 | scpnt->scsi_done(scpnt); |
| 75 | } |
| 76 | |
Christof Schmitt | e55f875 | 2010-11-18 14:53:18 +0100 | [diff] [blame] | 77 | static |
| 78 | int zfcp_scsi_queuecommand(struct Scsi_Host *shost, struct scsi_cmnd *scpnt) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 79 | { |
Christof Schmitt | b62a8d9 | 2010-09-08 14:39:55 +0200 | [diff] [blame] | 80 | struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(scpnt->device); |
Christof Schmitt | a2fa0ae | 2009-03-02 13:09:08 +0100 | [diff] [blame] | 81 | struct fc_rport *rport = starget_to_rport(scsi_target(scpnt->device)); |
Christof Schmitt | b62a8d9 | 2010-09-08 14:39:55 +0200 | [diff] [blame] | 82 | int status, scsi_result, ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 83 | |
| 84 | /* reset the status for this request */ |
| 85 | scpnt->result = 0; |
| 86 | scpnt->host_scribble = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 87 | |
Christof Schmitt | a2fa0ae | 2009-03-02 13:09:08 +0100 | [diff] [blame] | 88 | scsi_result = fc_remote_port_chkready(rport); |
| 89 | if (unlikely(scsi_result)) { |
| 90 | scpnt->result = scsi_result; |
Swen Schillig | 250a135 | 2010-12-02 15:16:15 +0100 | [diff] [blame] | 91 | zfcp_dbf_scsi_fail_send(scpnt); |
Christof Schmitt | a2fa0ae | 2009-03-02 13:09:08 +0100 | [diff] [blame] | 92 | scpnt->scsi_done(scpnt); |
| 93 | return 0; |
| 94 | } |
| 95 | |
Christof Schmitt | b62a8d9 | 2010-09-08 14:39:55 +0200 | [diff] [blame] | 96 | status = atomic_read(&zfcp_sdev->status); |
Christof Schmitt | 8830271 | 2009-11-24 16:54:07 +0100 | [diff] [blame] | 97 | if (unlikely(status & ZFCP_STATUS_COMMON_ERP_FAILED) && |
Christof Schmitt | b62a8d9 | 2010-09-08 14:39:55 +0200 | [diff] [blame] | 98 | !(atomic_read(&zfcp_sdev->port->status) & |
Christof Schmitt | 8830271 | 2009-11-24 16:54:07 +0100 | [diff] [blame] | 99 | ZFCP_STATUS_COMMON_ERP_FAILED)) { |
Christof Schmitt | b62a8d9 | 2010-09-08 14:39:55 +0200 | [diff] [blame] | 100 | /* only LUN access denied, but port is good |
Christof Schmitt | 8830271 | 2009-11-24 16:54:07 +0100 | [diff] [blame] | 101 | * not covered by FC transport, have to fail here */ |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 102 | zfcp_scsi_command_fail(scpnt, DID_ERROR); |
Joe Perches | a419aef | 2009-08-18 11:18:35 -0700 | [diff] [blame] | 103 | return 0; |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 104 | } |
| 105 | |
Christof Schmitt | 8830271 | 2009-11-24 16:54:07 +0100 | [diff] [blame] | 106 | if (unlikely(!(status & ZFCP_STATUS_COMMON_UNBLOCKED))) { |
| 107 | /* This could be either |
Christof Schmitt | b62a8d9 | 2010-09-08 14:39:55 +0200 | [diff] [blame] | 108 | * open LUN pending: this is temporary, will result in |
| 109 | * open LUN or ERP_FAILED, so retry command |
Christof Schmitt | 8830271 | 2009-11-24 16:54:07 +0100 | [diff] [blame] | 110 | * call to rport_delete pending: mimic retry from |
| 111 | * fc_remote_port_chkready until rport is BLOCKED |
| 112 | */ |
| 113 | zfcp_scsi_command_fail(scpnt, DID_IMM_RETRY); |
| 114 | return 0; |
| 115 | } |
| 116 | |
Christof Schmitt | b62a8d9 | 2010-09-08 14:39:55 +0200 | [diff] [blame] | 117 | ret = zfcp_fsf_fcp_cmnd(scpnt); |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 118 | if (unlikely(ret == -EBUSY)) |
Swen Schillig | f7a65e9 | 2008-11-27 11:44:07 +0100 | [diff] [blame] | 119 | return SCSI_MLQUEUE_DEVICE_BUSY; |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 120 | else if (unlikely(ret < 0)) |
| 121 | return SCSI_MLQUEUE_HOST_BUSY; |
| 122 | |
| 123 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 124 | } |
| 125 | |
Christof Schmitt | b62a8d9 | 2010-09-08 14:39:55 +0200 | [diff] [blame] | 126 | static int zfcp_scsi_slave_alloc(struct scsi_device *sdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 127 | { |
Christof Schmitt | b62a8d9 | 2010-09-08 14:39:55 +0200 | [diff] [blame] | 128 | struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); |
| 129 | struct zfcp_adapter *adapter = |
| 130 | (struct zfcp_adapter *) sdev->host->hostdata[0]; |
| 131 | struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 132 | struct zfcp_port *port; |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 133 | struct zfcp_unit *unit; |
Christof Schmitt | 0d81b4e | 2010-12-08 17:30:46 +0100 | [diff] [blame] | 134 | int npiv = adapter->connection_features & FSF_FEATURE_NPIV_MODE; |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 135 | |
Christof Schmitt | b62a8d9 | 2010-09-08 14:39:55 +0200 | [diff] [blame] | 136 | port = zfcp_get_port_by_wwpn(adapter, rport->port_name); |
| 137 | if (!port) |
| 138 | return -ENXIO; |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 139 | |
Christof Schmitt | b62a8d9 | 2010-09-08 14:39:55 +0200 | [diff] [blame] | 140 | unit = zfcp_unit_find(port, zfcp_scsi_dev_lun(sdev)); |
| 141 | if (unit) |
| 142 | put_device(&unit->dev); |
Christof Schmitt | f8210e3 | 2010-09-08 14:39:56 +0200 | [diff] [blame] | 143 | |
Christof Schmitt | 0d81b4e | 2010-12-08 17:30:46 +0100 | [diff] [blame] | 144 | if (!unit && !(allow_lun_scan && npiv)) { |
Christof Schmitt | b62a8d9 | 2010-09-08 14:39:55 +0200 | [diff] [blame] | 145 | put_device(&port->dev); |
| 146 | return -ENXIO; |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 147 | } |
Christof Schmitt | b62a8d9 | 2010-09-08 14:39:55 +0200 | [diff] [blame] | 148 | |
| 149 | zfcp_sdev->port = port; |
| 150 | zfcp_sdev->latencies.write.channel.min = 0xFFFFFFFF; |
| 151 | zfcp_sdev->latencies.write.fabric.min = 0xFFFFFFFF; |
| 152 | zfcp_sdev->latencies.read.channel.min = 0xFFFFFFFF; |
| 153 | zfcp_sdev->latencies.read.fabric.min = 0xFFFFFFFF; |
| 154 | zfcp_sdev->latencies.cmd.channel.min = 0xFFFFFFFF; |
| 155 | zfcp_sdev->latencies.cmd.fabric.min = 0xFFFFFFFF; |
| 156 | spin_lock_init(&zfcp_sdev->latencies.lock); |
| 157 | |
Swen Schillig | edaed85 | 2010-09-08 14:40:01 +0200 | [diff] [blame] | 158 | zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_RUNNING); |
Swen Schillig | ea4a3a6 | 2010-12-02 15:16:16 +0100 | [diff] [blame] | 159 | zfcp_erp_lun_reopen(sdev, 0, "scsla_1"); |
Christof Schmitt | b62a8d9 | 2010-09-08 14:39:55 +0200 | [diff] [blame] | 160 | zfcp_erp_wait(port->adapter); |
| 161 | |
| 162 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 163 | } |
| 164 | |
Heiko Carstens | 2b67fc4 | 2007-02-05 21:16:47 +0100 | [diff] [blame] | 165 | static int zfcp_scsi_eh_abort_handler(struct scsi_cmnd *scpnt) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 166 | { |
Christof Schmitt | 63caf36 | 2009-03-02 13:09:00 +0100 | [diff] [blame] | 167 | struct Scsi_Host *scsi_host = scpnt->device->host; |
| 168 | struct zfcp_adapter *adapter = |
| 169 | (struct zfcp_adapter *) scsi_host->hostdata[0]; |
Christof Schmitt | 63caf36 | 2009-03-02 13:09:00 +0100 | [diff] [blame] | 170 | struct zfcp_fsf_req *old_req, *abrt_req; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 171 | unsigned long flags; |
Christof Schmitt | a11a52b | 2009-07-13 15:06:14 +0200 | [diff] [blame] | 172 | unsigned long old_reqid = (unsigned long) scpnt->host_scribble; |
Christof Schmitt | a1dbfdd | 2010-03-24 16:50:31 +0100 | [diff] [blame] | 173 | int retval = SUCCESS, ret; |
Christof Schmitt | 63caf36 | 2009-03-02 13:09:00 +0100 | [diff] [blame] | 174 | int retry = 3; |
Christof Schmitt | a11a52b | 2009-07-13 15:06:14 +0200 | [diff] [blame] | 175 | char *dbf_tag; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 176 | |
Andreas Herrmann | 059c97d | 2005-09-13 21:47:52 +0200 | [diff] [blame] | 177 | /* avoid race condition between late normal completion and abort */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 178 | write_lock_irqsave(&adapter->abort_lock, flags); |
| 179 | |
Christof Schmitt | b6bd2fb | 2010-02-17 11:18:50 +0100 | [diff] [blame] | 180 | old_req = zfcp_reqlist_find(adapter->req_list, old_reqid); |
Christof Schmitt | 63caf36 | 2009-03-02 13:09:00 +0100 | [diff] [blame] | 181 | if (!old_req) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 182 | write_unlock_irqrestore(&adapter->abort_lock, flags); |
Swen Schillig | 250a135 | 2010-12-02 15:16:15 +0100 | [diff] [blame] | 183 | zfcp_dbf_scsi_abort("abrt_or", scpnt, NULL); |
Christof Schmitt | c6936e7 | 2009-04-17 15:08:11 +0200 | [diff] [blame] | 184 | return FAILED; /* completion could be in progress */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 185 | } |
Christof Schmitt | 63caf36 | 2009-03-02 13:09:00 +0100 | [diff] [blame] | 186 | old_req->data = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 187 | |
Andreas Herrmann | 4eff4a3 | 2006-09-18 22:29:20 +0200 | [diff] [blame] | 188 | /* don't access old fsf_req after releasing the abort_lock */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 189 | write_unlock_irqrestore(&adapter->abort_lock, flags); |
Andreas Herrmann | 4eff4a3 | 2006-09-18 22:29:20 +0200 | [diff] [blame] | 190 | |
Christof Schmitt | 63caf36 | 2009-03-02 13:09:00 +0100 | [diff] [blame] | 191 | while (retry--) { |
Christof Schmitt | b62a8d9 | 2010-09-08 14:39:55 +0200 | [diff] [blame] | 192 | abrt_req = zfcp_fsf_abort_fcp_cmnd(scpnt); |
Christof Schmitt | 63caf36 | 2009-03-02 13:09:00 +0100 | [diff] [blame] | 193 | if (abrt_req) |
| 194 | break; |
| 195 | |
| 196 | zfcp_erp_wait(adapter); |
Christof Schmitt | a1dbfdd | 2010-03-24 16:50:31 +0100 | [diff] [blame] | 197 | ret = fc_block_scsi_eh(scpnt); |
Swen Schillig | 250a135 | 2010-12-02 15:16:15 +0100 | [diff] [blame] | 198 | if (ret) { |
| 199 | zfcp_dbf_scsi_abort("abrt_bl", scpnt, NULL); |
Christof Schmitt | a1dbfdd | 2010-03-24 16:50:31 +0100 | [diff] [blame] | 200 | return ret; |
Swen Schillig | 250a135 | 2010-12-02 15:16:15 +0100 | [diff] [blame] | 201 | } |
Christof Schmitt | 63caf36 | 2009-03-02 13:09:00 +0100 | [diff] [blame] | 202 | if (!(atomic_read(&adapter->status) & |
| 203 | ZFCP_STATUS_COMMON_RUNNING)) { |
Swen Schillig | 250a135 | 2010-12-02 15:16:15 +0100 | [diff] [blame] | 204 | zfcp_dbf_scsi_abort("abrt_ru", scpnt, NULL); |
Christof Schmitt | 63caf36 | 2009-03-02 13:09:00 +0100 | [diff] [blame] | 205 | return SUCCESS; |
| 206 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 207 | } |
Swen Schillig | 250a135 | 2010-12-02 15:16:15 +0100 | [diff] [blame] | 208 | if (!abrt_req) { |
| 209 | zfcp_dbf_scsi_abort("abrt_ar", scpnt, NULL); |
Christof Schmitt | 63caf36 | 2009-03-02 13:09:00 +0100 | [diff] [blame] | 210 | return FAILED; |
Swen Schillig | 250a135 | 2010-12-02 15:16:15 +0100 | [diff] [blame] | 211 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 212 | |
Swen Schillig | 058b864 | 2009-08-18 15:43:14 +0200 | [diff] [blame] | 213 | wait_for_completion(&abrt_req->completion); |
Andreas Herrmann | 059c97d | 2005-09-13 21:47:52 +0200 | [diff] [blame] | 214 | |
Christof Schmitt | 63caf36 | 2009-03-02 13:09:00 +0100 | [diff] [blame] | 215 | if (abrt_req->status & ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED) |
Swen Schillig | 250a135 | 2010-12-02 15:16:15 +0100 | [diff] [blame] | 216 | dbf_tag = "abrt_ok"; |
Christof Schmitt | 63caf36 | 2009-03-02 13:09:00 +0100 | [diff] [blame] | 217 | else if (abrt_req->status & ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED) |
Swen Schillig | 250a135 | 2010-12-02 15:16:15 +0100 | [diff] [blame] | 218 | dbf_tag = "abrt_nn"; |
Christof Schmitt | 63caf36 | 2009-03-02 13:09:00 +0100 | [diff] [blame] | 219 | else { |
Swen Schillig | 250a135 | 2010-12-02 15:16:15 +0100 | [diff] [blame] | 220 | dbf_tag = "abrt_fa"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 221 | retval = FAILED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 222 | } |
Swen Schillig | 250a135 | 2010-12-02 15:16:15 +0100 | [diff] [blame] | 223 | zfcp_dbf_scsi_abort(dbf_tag, scpnt, abrt_req); |
Christof Schmitt | 63caf36 | 2009-03-02 13:09:00 +0100 | [diff] [blame] | 224 | zfcp_fsf_req_free(abrt_req); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 225 | return retval; |
| 226 | } |
| 227 | |
Christof Schmitt | 63caf36 | 2009-03-02 13:09:00 +0100 | [diff] [blame] | 228 | static int zfcp_task_mgmt_function(struct scsi_cmnd *scpnt, u8 tm_flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 229 | { |
Christof Schmitt | b62a8d9 | 2010-09-08 14:39:55 +0200 | [diff] [blame] | 230 | struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(scpnt->device); |
| 231 | struct zfcp_adapter *adapter = zfcp_sdev->port->adapter; |
Swen Schillig | 564e1c8 | 2009-08-18 15:43:19 +0200 | [diff] [blame] | 232 | struct zfcp_fsf_req *fsf_req = NULL; |
Christof Schmitt | a1dbfdd | 2010-03-24 16:50:31 +0100 | [diff] [blame] | 233 | int retval = SUCCESS, ret; |
Christof Schmitt | 63caf36 | 2009-03-02 13:09:00 +0100 | [diff] [blame] | 234 | int retry = 3; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 235 | |
Christof Schmitt | 63caf36 | 2009-03-02 13:09:00 +0100 | [diff] [blame] | 236 | while (retry--) { |
Christof Schmitt | b62a8d9 | 2010-09-08 14:39:55 +0200 | [diff] [blame] | 237 | fsf_req = zfcp_fsf_fcp_task_mgmt(scpnt, tm_flags); |
Christof Schmitt | 63caf36 | 2009-03-02 13:09:00 +0100 | [diff] [blame] | 238 | if (fsf_req) |
| 239 | break; |
| 240 | |
| 241 | zfcp_erp_wait(adapter); |
Christof Schmitt | a1dbfdd | 2010-03-24 16:50:31 +0100 | [diff] [blame] | 242 | ret = fc_block_scsi_eh(scpnt); |
| 243 | if (ret) |
| 244 | return ret; |
| 245 | |
Christof Schmitt | 63caf36 | 2009-03-02 13:09:00 +0100 | [diff] [blame] | 246 | if (!(atomic_read(&adapter->status) & |
| 247 | ZFCP_STATUS_COMMON_RUNNING)) { |
Christof Schmitt | b62a8d9 | 2010-09-08 14:39:55 +0200 | [diff] [blame] | 248 | zfcp_dbf_scsi_devreset("nres", scpnt, tm_flags); |
Christof Schmitt | 63caf36 | 2009-03-02 13:09:00 +0100 | [diff] [blame] | 249 | return SUCCESS; |
| 250 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 251 | } |
Christof Schmitt | 63caf36 | 2009-03-02 13:09:00 +0100 | [diff] [blame] | 252 | if (!fsf_req) |
| 253 | return FAILED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 254 | |
Swen Schillig | 058b864 | 2009-08-18 15:43:14 +0200 | [diff] [blame] | 255 | wait_for_completion(&fsf_req->completion); |
Andreas Herrmann | 77eb169 | 2005-09-13 21:48:33 +0200 | [diff] [blame] | 256 | |
Maxim Shchetynin | 8a36e45 | 2005-09-13 21:50:38 +0200 | [diff] [blame] | 257 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_TMFUNCFAILED) { |
Christof Schmitt | b62a8d9 | 2010-09-08 14:39:55 +0200 | [diff] [blame] | 258 | zfcp_dbf_scsi_devreset("fail", scpnt, tm_flags); |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 259 | retval = FAILED; |
Maxim Shchetynin | 8a36e45 | 2005-09-13 21:50:38 +0200 | [diff] [blame] | 260 | } else |
Christof Schmitt | b62a8d9 | 2010-09-08 14:39:55 +0200 | [diff] [blame] | 261 | zfcp_dbf_scsi_devreset("okay", scpnt, tm_flags); |
Andreas Herrmann | 77eb169 | 2005-09-13 21:48:33 +0200 | [diff] [blame] | 262 | |
| 263 | zfcp_fsf_req_free(fsf_req); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 264 | return retval; |
| 265 | } |
| 266 | |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 267 | static int zfcp_scsi_eh_device_reset_handler(struct scsi_cmnd *scpnt) |
| 268 | { |
Christof Schmitt | 4318e08 | 2009-11-24 16:54:08 +0100 | [diff] [blame] | 269 | return zfcp_task_mgmt_function(scpnt, FCP_TMF_LUN_RESET); |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 270 | } |
| 271 | |
| 272 | static int zfcp_scsi_eh_target_reset_handler(struct scsi_cmnd *scpnt) |
| 273 | { |
Christof Schmitt | 4318e08 | 2009-11-24 16:54:08 +0100 | [diff] [blame] | 274 | return zfcp_task_mgmt_function(scpnt, FCP_TMF_TGT_RESET); |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 275 | } |
| 276 | |
Heiko Carstens | 2b67fc4 | 2007-02-05 21:16:47 +0100 | [diff] [blame] | 277 | static int zfcp_scsi_eh_host_reset_handler(struct scsi_cmnd *scpnt) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 278 | { |
Christof Schmitt | b62a8d9 | 2010-09-08 14:39:55 +0200 | [diff] [blame] | 279 | struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(scpnt->device); |
| 280 | struct zfcp_adapter *adapter = zfcp_sdev->port->adapter; |
Christof Schmitt | a1dbfdd | 2010-03-24 16:50:31 +0100 | [diff] [blame] | 281 | int ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 282 | |
Swen Schillig | ea4a3a6 | 2010-12-02 15:16:16 +0100 | [diff] [blame] | 283 | zfcp_erp_adapter_reopen(adapter, 0, "schrh_1"); |
Andreas Herrmann | 8165428 | 2006-09-18 22:30:36 +0200 | [diff] [blame] | 284 | zfcp_erp_wait(adapter); |
Christof Schmitt | a1dbfdd | 2010-03-24 16:50:31 +0100 | [diff] [blame] | 285 | ret = fc_block_scsi_eh(scpnt); |
| 286 | if (ret) |
| 287 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 288 | |
Andreas Herrmann | 810f1e3e | 2005-09-13 21:49:52 +0200 | [diff] [blame] | 289 | return SUCCESS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 290 | } |
| 291 | |
Christof Schmitt | 1947c72 | 2011-02-22 19:54:46 +0100 | [diff] [blame] | 292 | struct scsi_transport_template *zfcp_scsi_transport_template; |
| 293 | |
| 294 | static struct scsi_host_template zfcp_scsi_host_template = { |
| 295 | .module = THIS_MODULE, |
| 296 | .name = "zfcp", |
| 297 | .queuecommand = zfcp_scsi_queuecommand, |
| 298 | .eh_abort_handler = zfcp_scsi_eh_abort_handler, |
| 299 | .eh_device_reset_handler = zfcp_scsi_eh_device_reset_handler, |
| 300 | .eh_target_reset_handler = zfcp_scsi_eh_target_reset_handler, |
| 301 | .eh_host_reset_handler = zfcp_scsi_eh_host_reset_handler, |
| 302 | .slave_alloc = zfcp_scsi_slave_alloc, |
| 303 | .slave_configure = zfcp_scsi_slave_configure, |
| 304 | .slave_destroy = zfcp_scsi_slave_destroy, |
| 305 | .change_queue_depth = zfcp_scsi_change_queue_depth, |
| 306 | .proc_name = "zfcp", |
| 307 | .can_queue = 4096, |
| 308 | .this_id = -1, |
| 309 | .sg_tablesize = ZFCP_QDIO_MAX_SBALES_PER_REQ, |
| 310 | .max_sectors = (ZFCP_QDIO_MAX_SBALES_PER_REQ * 8), |
| 311 | .dma_boundary = ZFCP_QDIO_SBALE_LEN - 1, |
| 312 | .cmd_per_lun = 1, |
| 313 | .use_clustering = 1, |
| 314 | .shost_attrs = zfcp_sysfs_shost_attrs, |
| 315 | .sdev_attrs = zfcp_sysfs_sdev_attrs, |
| 316 | }; |
| 317 | |
| 318 | /** |
| 319 | * zfcp_scsi_adapter_register - Register SCSI and FC host with SCSI midlayer |
| 320 | * @adapter: The zfcp adapter to register with the SCSI midlayer |
| 321 | */ |
| 322 | int zfcp_scsi_adapter_register(struct zfcp_adapter *adapter) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 323 | { |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 324 | struct ccw_dev_id dev_id; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 325 | |
Michael Loehr | 9f28745 | 2007-05-09 11:01:24 +0200 | [diff] [blame] | 326 | if (adapter->scsi_host) |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 327 | return 0; |
Michael Loehr | 9f28745 | 2007-05-09 11:01:24 +0200 | [diff] [blame] | 328 | |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 329 | ccw_device_get_id(adapter->ccw_device, &dev_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 330 | /* register adapter as SCSI host with mid layer of SCSI stack */ |
Christof Schmitt | 1947c72 | 2011-02-22 19:54:46 +0100 | [diff] [blame] | 331 | adapter->scsi_host = scsi_host_alloc(&zfcp_scsi_host_template, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 332 | sizeof (struct zfcp_adapter *)); |
| 333 | if (!adapter->scsi_host) { |
Christof Schmitt | 553448f | 2008-06-10 18:20:58 +0200 | [diff] [blame] | 334 | dev_err(&adapter->ccw_device->dev, |
Christof Schmitt | ff3b24f | 2008-10-01 12:42:15 +0200 | [diff] [blame] | 335 | "Registering the FCP device with the " |
| 336 | "SCSI stack failed\n"); |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 337 | return -EIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 338 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 339 | |
| 340 | /* tell the SCSI stack some characteristics of this adapter */ |
Christof Schmitt | f8210e3 | 2010-09-08 14:39:56 +0200 | [diff] [blame] | 341 | adapter->scsi_host->max_id = 511; |
| 342 | adapter->scsi_host->max_lun = 0xFFFFFFFF; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 343 | adapter->scsi_host->max_channel = 0; |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 344 | adapter->scsi_host->unique_id = dev_id.devno; |
Christof Schmitt | 4318e08 | 2009-11-24 16:54:08 +0100 | [diff] [blame] | 345 | adapter->scsi_host->max_cmd_len = 16; /* in struct fcp_cmnd */ |
Christof Schmitt | 1947c72 | 2011-02-22 19:54:46 +0100 | [diff] [blame] | 346 | adapter->scsi_host->transportt = zfcp_scsi_transport_template; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 347 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 348 | adapter->scsi_host->hostdata[0] = (unsigned long) adapter; |
| 349 | |
| 350 | if (scsi_add_host(adapter->scsi_host, &adapter->ccw_device->dev)) { |
| 351 | scsi_host_put(adapter->scsi_host); |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 352 | return -EIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 353 | } |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 354 | |
| 355 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 356 | } |
| 357 | |
Christof Schmitt | 1947c72 | 2011-02-22 19:54:46 +0100 | [diff] [blame] | 358 | /** |
| 359 | * zfcp_scsi_adapter_unregister - Unregister SCSI and FC host from SCSI midlayer |
| 360 | * @adapter: The zfcp adapter to unregister. |
| 361 | */ |
| 362 | void zfcp_scsi_adapter_unregister(struct zfcp_adapter *adapter) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 363 | { |
| 364 | struct Scsi_Host *shost; |
Andreas Herrmann | 13e1e1f | 2005-09-19 16:56:17 +0200 | [diff] [blame] | 365 | struct zfcp_port *port; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 366 | |
| 367 | shost = adapter->scsi_host; |
| 368 | if (!shost) |
| 369 | return; |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 370 | |
Swen Schillig | ecf0c77 | 2009-11-24 16:53:58 +0100 | [diff] [blame] | 371 | read_lock_irq(&adapter->port_list_lock); |
| 372 | list_for_each_entry(port, &adapter->port_list, list) |
Swen Schillig | f3450c7 | 2009-11-24 16:53:59 +0100 | [diff] [blame] | 373 | port->rport = NULL; |
Swen Schillig | ecf0c77 | 2009-11-24 16:53:58 +0100 | [diff] [blame] | 374 | read_unlock_irq(&adapter->port_list_lock); |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 375 | |
Andreas Herrmann | 3859f6a | 2005-08-27 11:07:54 -0700 | [diff] [blame] | 376 | fc_remove_host(shost); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 377 | scsi_remove_host(shost); |
| 378 | scsi_host_put(shost); |
| 379 | adapter->scsi_host = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 380 | } |
| 381 | |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 382 | static struct fc_host_statistics* |
| 383 | zfcp_init_fc_host_stats(struct zfcp_adapter *adapter) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 384 | { |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 385 | struct fc_host_statistics *fc_stats; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 386 | |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 387 | if (!adapter->fc_stats) { |
| 388 | fc_stats = kmalloc(sizeof(*fc_stats), GFP_KERNEL); |
| 389 | if (!fc_stats) |
| 390 | return NULL; |
Swen Schillig | f3450c7 | 2009-11-24 16:53:59 +0100 | [diff] [blame] | 391 | adapter->fc_stats = fc_stats; /* freed in adapter_release */ |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 392 | } |
| 393 | memset(adapter->fc_stats, 0, sizeof(*adapter->fc_stats)); |
| 394 | return adapter->fc_stats; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 395 | } |
| 396 | |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 397 | static void zfcp_adjust_fc_host_stats(struct fc_host_statistics *fc_stats, |
| 398 | struct fsf_qtcb_bottom_port *data, |
| 399 | struct fsf_qtcb_bottom_port *old) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 400 | { |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 401 | fc_stats->seconds_since_last_reset = |
| 402 | data->seconds_since_last_reset - old->seconds_since_last_reset; |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 403 | fc_stats->tx_frames = data->tx_frames - old->tx_frames; |
| 404 | fc_stats->tx_words = data->tx_words - old->tx_words; |
| 405 | fc_stats->rx_frames = data->rx_frames - old->rx_frames; |
| 406 | fc_stats->rx_words = data->rx_words - old->rx_words; |
| 407 | fc_stats->lip_count = data->lip - old->lip; |
| 408 | fc_stats->nos_count = data->nos - old->nos; |
| 409 | fc_stats->error_frames = data->error_frames - old->error_frames; |
| 410 | fc_stats->dumped_frames = data->dumped_frames - old->dumped_frames; |
| 411 | fc_stats->link_failure_count = data->link_failure - old->link_failure; |
| 412 | fc_stats->loss_of_sync_count = data->loss_of_sync - old->loss_of_sync; |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 413 | fc_stats->loss_of_signal_count = |
| 414 | data->loss_of_signal - old->loss_of_signal; |
| 415 | fc_stats->prim_seq_protocol_err_count = |
| 416 | data->psp_error_counts - old->psp_error_counts; |
| 417 | fc_stats->invalid_tx_word_count = |
| 418 | data->invalid_tx_words - old->invalid_tx_words; |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 419 | fc_stats->invalid_crc_count = data->invalid_crcs - old->invalid_crcs; |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 420 | fc_stats->fcp_input_requests = |
| 421 | data->input_requests - old->input_requests; |
| 422 | fc_stats->fcp_output_requests = |
| 423 | data->output_requests - old->output_requests; |
| 424 | fc_stats->fcp_control_requests = |
| 425 | data->control_requests - old->control_requests; |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 426 | fc_stats->fcp_input_megabytes = data->input_mb - old->input_mb; |
| 427 | fc_stats->fcp_output_megabytes = data->output_mb - old->output_mb; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 428 | } |
| 429 | |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 430 | static void zfcp_set_fc_host_stats(struct fc_host_statistics *fc_stats, |
| 431 | struct fsf_qtcb_bottom_port *data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 432 | { |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 433 | fc_stats->seconds_since_last_reset = data->seconds_since_last_reset; |
| 434 | fc_stats->tx_frames = data->tx_frames; |
| 435 | fc_stats->tx_words = data->tx_words; |
| 436 | fc_stats->rx_frames = data->rx_frames; |
| 437 | fc_stats->rx_words = data->rx_words; |
| 438 | fc_stats->lip_count = data->lip; |
| 439 | fc_stats->nos_count = data->nos; |
| 440 | fc_stats->error_frames = data->error_frames; |
| 441 | fc_stats->dumped_frames = data->dumped_frames; |
| 442 | fc_stats->link_failure_count = data->link_failure; |
| 443 | fc_stats->loss_of_sync_count = data->loss_of_sync; |
| 444 | fc_stats->loss_of_signal_count = data->loss_of_signal; |
| 445 | fc_stats->prim_seq_protocol_err_count = data->psp_error_counts; |
| 446 | fc_stats->invalid_tx_word_count = data->invalid_tx_words; |
| 447 | fc_stats->invalid_crc_count = data->invalid_crcs; |
| 448 | fc_stats->fcp_input_requests = data->input_requests; |
| 449 | fc_stats->fcp_output_requests = data->output_requests; |
| 450 | fc_stats->fcp_control_requests = data->control_requests; |
| 451 | fc_stats->fcp_input_megabytes = data->input_mb; |
| 452 | fc_stats->fcp_output_megabytes = data->output_mb; |
| 453 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 454 | |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 455 | static struct fc_host_statistics *zfcp_get_fc_host_stats(struct Scsi_Host *host) |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 456 | { |
| 457 | struct zfcp_adapter *adapter; |
| 458 | struct fc_host_statistics *fc_stats; |
| 459 | struct fsf_qtcb_bottom_port *data; |
| 460 | int ret; |
| 461 | |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 462 | adapter = (struct zfcp_adapter *)host->hostdata[0]; |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 463 | fc_stats = zfcp_init_fc_host_stats(adapter); |
| 464 | if (!fc_stats) |
| 465 | return NULL; |
| 466 | |
Andreas Herrmann | ec4081c | 2006-05-22 18:17:30 +0200 | [diff] [blame] | 467 | data = kzalloc(sizeof(*data), GFP_KERNEL); |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 468 | if (!data) |
| 469 | return NULL; |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 470 | |
Swen Schillig | 564e1c8 | 2009-08-18 15:43:19 +0200 | [diff] [blame] | 471 | ret = zfcp_fsf_exchange_port_data_sync(adapter->qdio, data); |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 472 | if (ret) { |
| 473 | kfree(data); |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 474 | return NULL; |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 475 | } |
| 476 | |
| 477 | if (adapter->stats_reset && |
| 478 | ((jiffies/HZ - adapter->stats_reset) < |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 479 | data->seconds_since_last_reset)) |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 480 | zfcp_adjust_fc_host_stats(fc_stats, data, |
| 481 | adapter->stats_reset_data); |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 482 | else |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 483 | zfcp_set_fc_host_stats(fc_stats, data); |
| 484 | |
| 485 | kfree(data); |
| 486 | return fc_stats; |
| 487 | } |
| 488 | |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 489 | static void zfcp_reset_fc_host_stats(struct Scsi_Host *shost) |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 490 | { |
| 491 | struct zfcp_adapter *adapter; |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 492 | struct fsf_qtcb_bottom_port *data; |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 493 | int ret; |
| 494 | |
| 495 | adapter = (struct zfcp_adapter *)shost->hostdata[0]; |
Andreas Herrmann | ec4081c | 2006-05-22 18:17:30 +0200 | [diff] [blame] | 496 | data = kzalloc(sizeof(*data), GFP_KERNEL); |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 497 | if (!data) |
| 498 | return; |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 499 | |
Swen Schillig | 564e1c8 | 2009-08-18 15:43:19 +0200 | [diff] [blame] | 500 | ret = zfcp_fsf_exchange_port_data_sync(adapter->qdio, data); |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 501 | if (ret) |
Heiko Carstens | 83f6d6d | 2007-08-08 10:47:02 +0200 | [diff] [blame] | 502 | kfree(data); |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 503 | else { |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 504 | adapter->stats_reset = jiffies/HZ; |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 505 | kfree(adapter->stats_reset_data); |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 506 | adapter->stats_reset_data = data; /* finally freed in |
Swen Schillig | f3450c7 | 2009-11-24 16:53:59 +0100 | [diff] [blame] | 507 | adapter_release */ |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 508 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 509 | } |
| 510 | |
Sven Schuetz | 85a8239 | 2008-06-10 18:20:59 +0200 | [diff] [blame] | 511 | static void zfcp_get_host_port_state(struct Scsi_Host *shost) |
| 512 | { |
| 513 | struct zfcp_adapter *adapter = |
| 514 | (struct zfcp_adapter *)shost->hostdata[0]; |
| 515 | int status = atomic_read(&adapter->status); |
| 516 | |
| 517 | if ((status & ZFCP_STATUS_COMMON_RUNNING) && |
| 518 | !(status & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED)) |
| 519 | fc_host_port_state(shost) = FC_PORTSTATE_ONLINE; |
| 520 | else if (status & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED) |
| 521 | fc_host_port_state(shost) = FC_PORTSTATE_LINKDOWN; |
| 522 | else if (status & ZFCP_STATUS_COMMON_ERP_FAILED) |
| 523 | fc_host_port_state(shost) = FC_PORTSTATE_ERROR; |
| 524 | else |
| 525 | fc_host_port_state(shost) = FC_PORTSTATE_UNKNOWN; |
| 526 | } |
| 527 | |
Andreas Herrmann | 338151e | 2006-05-22 18:25:56 +0200 | [diff] [blame] | 528 | static void zfcp_set_rport_dev_loss_tmo(struct fc_rport *rport, u32 timeout) |
| 529 | { |
| 530 | rport->dev_loss_tmo = timeout; |
| 531 | } |
| 532 | |
Christof Schmitt | a2fa0ae | 2009-03-02 13:09:08 +0100 | [diff] [blame] | 533 | /** |
Christof Schmitt | a2fa0ae | 2009-03-02 13:09:08 +0100 | [diff] [blame] | 534 | * zfcp_scsi_terminate_rport_io - Terminate all I/O on a rport |
| 535 | * @rport: The FC rport where to teminate I/O |
| 536 | * |
| 537 | * Abort all pending SCSI commands for a port by closing the |
Christof Schmitt | 835dc29 | 2010-07-08 09:53:08 +0200 | [diff] [blame] | 538 | * port. Using a reopen avoids a conflict with a shutdown |
| 539 | * overwriting a reopen. The "forced" ensures that a disappeared port |
| 540 | * is not opened again as valid due to the cached plogi data in |
| 541 | * non-NPIV mode. |
Christof Schmitt | a2fa0ae | 2009-03-02 13:09:08 +0100 | [diff] [blame] | 542 | */ |
| 543 | static void zfcp_scsi_terminate_rport_io(struct fc_rport *rport) |
| 544 | { |
Christof Schmitt | 7093293 | 2009-04-17 15:08:15 +0200 | [diff] [blame] | 545 | struct zfcp_port *port; |
Swen Schillig | ea945ff | 2009-08-18 15:43:24 +0200 | [diff] [blame] | 546 | struct Scsi_Host *shost = rport_to_shost(rport); |
| 547 | struct zfcp_adapter *adapter = |
| 548 | (struct zfcp_adapter *)shost->hostdata[0]; |
Christof Schmitt | a2fa0ae | 2009-03-02 13:09:08 +0100 | [diff] [blame] | 549 | |
Swen Schillig | ea945ff | 2009-08-18 15:43:24 +0200 | [diff] [blame] | 550 | port = zfcp_get_port_by_wwpn(adapter, rport->port_name); |
Christof Schmitt | 7093293 | 2009-04-17 15:08:15 +0200 | [diff] [blame] | 551 | |
| 552 | if (port) { |
Swen Schillig | ea4a3a6 | 2010-12-02 15:16:16 +0100 | [diff] [blame] | 553 | zfcp_erp_port_forced_reopen(port, 0, "sctrpi1"); |
Christof Schmitt | 615f59e | 2010-02-17 11:18:56 +0100 | [diff] [blame] | 554 | put_device(&port->dev); |
Christof Schmitt | 7093293 | 2009-04-17 15:08:15 +0200 | [diff] [blame] | 555 | } |
Christof Schmitt | a2fa0ae | 2009-03-02 13:09:08 +0100 | [diff] [blame] | 556 | } |
| 557 | |
| 558 | static void zfcp_scsi_rport_register(struct zfcp_port *port) |
| 559 | { |
| 560 | struct fc_rport_identifiers ids; |
| 561 | struct fc_rport *rport; |
| 562 | |
Christof Schmitt | 379d6bf | 2009-07-13 15:06:11 +0200 | [diff] [blame] | 563 | if (port->rport) |
| 564 | return; |
| 565 | |
Christof Schmitt | a2fa0ae | 2009-03-02 13:09:08 +0100 | [diff] [blame] | 566 | ids.node_name = port->wwnn; |
| 567 | ids.port_name = port->wwpn; |
| 568 | ids.port_id = port->d_id; |
| 569 | ids.roles = FC_RPORT_ROLE_FCP_TARGET; |
| 570 | |
| 571 | rport = fc_remote_port_add(port->adapter->scsi_host, 0, &ids); |
| 572 | if (!rport) { |
| 573 | dev_err(&port->adapter->ccw_device->dev, |
| 574 | "Registering port 0x%016Lx failed\n", |
| 575 | (unsigned long long)port->wwpn); |
| 576 | return; |
| 577 | } |
| 578 | |
Christof Schmitt | a2fa0ae | 2009-03-02 13:09:08 +0100 | [diff] [blame] | 579 | rport->maxframe_size = port->maxframe_size; |
| 580 | rport->supported_classes = port->supported_classes; |
| 581 | port->rport = rport; |
Christof Schmitt | 1bf3ff0 | 2010-07-16 15:37:35 +0200 | [diff] [blame] | 582 | port->starget_id = rport->scsi_target_id; |
Christof Schmitt | 5a7de55 | 2010-07-08 09:53:07 +0200 | [diff] [blame] | 583 | |
Christof Schmitt | 1daa4eb | 2010-09-08 14:39:52 +0200 | [diff] [blame] | 584 | zfcp_unit_queue_scsi_scan(port); |
Christof Schmitt | a2fa0ae | 2009-03-02 13:09:08 +0100 | [diff] [blame] | 585 | } |
| 586 | |
| 587 | static void zfcp_scsi_rport_block(struct zfcp_port *port) |
| 588 | { |
Christof Schmitt | 7093293 | 2009-04-17 15:08:15 +0200 | [diff] [blame] | 589 | struct fc_rport *rport = port->rport; |
| 590 | |
Christof Schmitt | 379d6bf | 2009-07-13 15:06:11 +0200 | [diff] [blame] | 591 | if (rport) { |
Christof Schmitt | 7093293 | 2009-04-17 15:08:15 +0200 | [diff] [blame] | 592 | fc_remote_port_delete(rport); |
Christof Schmitt | 379d6bf | 2009-07-13 15:06:11 +0200 | [diff] [blame] | 593 | port->rport = NULL; |
| 594 | } |
Christof Schmitt | a2fa0ae | 2009-03-02 13:09:08 +0100 | [diff] [blame] | 595 | } |
| 596 | |
| 597 | void zfcp_scsi_schedule_rport_register(struct zfcp_port *port) |
| 598 | { |
Christof Schmitt | 615f59e | 2010-02-17 11:18:56 +0100 | [diff] [blame] | 599 | get_device(&port->dev); |
Christof Schmitt | a2fa0ae | 2009-03-02 13:09:08 +0100 | [diff] [blame] | 600 | port->rport_task = RPORT_ADD; |
| 601 | |
Swen Schillig | 4544683 | 2009-08-18 15:43:17 +0200 | [diff] [blame] | 602 | if (!queue_work(port->adapter->work_queue, &port->rport_work)) |
Christof Schmitt | 615f59e | 2010-02-17 11:18:56 +0100 | [diff] [blame] | 603 | put_device(&port->dev); |
Christof Schmitt | a2fa0ae | 2009-03-02 13:09:08 +0100 | [diff] [blame] | 604 | } |
| 605 | |
| 606 | void zfcp_scsi_schedule_rport_block(struct zfcp_port *port) |
| 607 | { |
Christof Schmitt | 615f59e | 2010-02-17 11:18:56 +0100 | [diff] [blame] | 608 | get_device(&port->dev); |
Christof Schmitt | a2fa0ae | 2009-03-02 13:09:08 +0100 | [diff] [blame] | 609 | port->rport_task = RPORT_DEL; |
| 610 | |
Swen Schillig | 4544683 | 2009-08-18 15:43:17 +0200 | [diff] [blame] | 611 | if (port->rport && queue_work(port->adapter->work_queue, |
| 612 | &port->rport_work)) |
Swen Schillig | a67417a | 2009-08-18 15:43:06 +0200 | [diff] [blame] | 613 | return; |
| 614 | |
Christof Schmitt | 615f59e | 2010-02-17 11:18:56 +0100 | [diff] [blame] | 615 | put_device(&port->dev); |
Christof Schmitt | a2fa0ae | 2009-03-02 13:09:08 +0100 | [diff] [blame] | 616 | } |
| 617 | |
| 618 | void zfcp_scsi_schedule_rports_block(struct zfcp_adapter *adapter) |
| 619 | { |
Swen Schillig | ecf0c77 | 2009-11-24 16:53:58 +0100 | [diff] [blame] | 620 | unsigned long flags; |
Christof Schmitt | a2fa0ae | 2009-03-02 13:09:08 +0100 | [diff] [blame] | 621 | struct zfcp_port *port; |
| 622 | |
Swen Schillig | ecf0c77 | 2009-11-24 16:53:58 +0100 | [diff] [blame] | 623 | read_lock_irqsave(&adapter->port_list_lock, flags); |
| 624 | list_for_each_entry(port, &adapter->port_list, list) |
Christof Schmitt | a2fa0ae | 2009-03-02 13:09:08 +0100 | [diff] [blame] | 625 | zfcp_scsi_schedule_rport_block(port); |
Swen Schillig | ecf0c77 | 2009-11-24 16:53:58 +0100 | [diff] [blame] | 626 | read_unlock_irqrestore(&adapter->port_list_lock, flags); |
Christof Schmitt | a2fa0ae | 2009-03-02 13:09:08 +0100 | [diff] [blame] | 627 | } |
| 628 | |
| 629 | void zfcp_scsi_rport_work(struct work_struct *work) |
| 630 | { |
| 631 | struct zfcp_port *port = container_of(work, struct zfcp_port, |
| 632 | rport_work); |
| 633 | |
| 634 | while (port->rport_task) { |
| 635 | if (port->rport_task == RPORT_ADD) { |
| 636 | port->rport_task = RPORT_NONE; |
| 637 | zfcp_scsi_rport_register(port); |
| 638 | } else { |
| 639 | port->rport_task = RPORT_NONE; |
| 640 | zfcp_scsi_rport_block(port); |
| 641 | } |
| 642 | } |
| 643 | |
Christof Schmitt | 615f59e | 2010-02-17 11:18:56 +0100 | [diff] [blame] | 644 | put_device(&port->dev); |
Christof Schmitt | a2fa0ae | 2009-03-02 13:09:08 +0100 | [diff] [blame] | 645 | } |
| 646 | |
Christof Schmitt | 5a7de55 | 2010-07-08 09:53:07 +0200 | [diff] [blame] | 647 | /** |
Felix Beck | ef3eb71 | 2010-07-16 15:37:42 +0200 | [diff] [blame] | 648 | * zfcp_scsi_set_prot - Configure DIF/DIX support in scsi_host |
| 649 | * @adapter: The adapter where to configure DIF/DIX for the SCSI host |
| 650 | */ |
| 651 | void zfcp_scsi_set_prot(struct zfcp_adapter *adapter) |
| 652 | { |
| 653 | unsigned int mask = 0; |
| 654 | unsigned int data_div; |
| 655 | struct Scsi_Host *shost = adapter->scsi_host; |
| 656 | |
| 657 | data_div = atomic_read(&adapter->status) & |
| 658 | ZFCP_STATUS_ADAPTER_DATA_DIV_ENABLED; |
| 659 | |
| 660 | if (enable_dif && |
| 661 | adapter->adapter_features & FSF_FEATURE_DIF_PROT_TYPE1) |
| 662 | mask |= SHOST_DIF_TYPE1_PROTECTION; |
| 663 | |
| 664 | if (enable_dif && data_div && |
| 665 | adapter->adapter_features & FSF_FEATURE_DIX_PROT_TCPIP) { |
| 666 | mask |= SHOST_DIX_TYPE1_PROTECTION; |
| 667 | scsi_host_set_guard(shost, SHOST_DIX_GUARD_IP); |
Christof Schmitt | 175b79f | 2010-09-10 20:50:40 +0200 | [diff] [blame] | 668 | shost->sg_prot_tablesize = ZFCP_QDIO_MAX_SBALES_PER_REQ / 2; |
Felix Beck | ef3eb71 | 2010-07-16 15:37:42 +0200 | [diff] [blame] | 669 | shost->sg_tablesize = ZFCP_QDIO_MAX_SBALES_PER_REQ / 2; |
| 670 | shost->max_sectors = ZFCP_QDIO_MAX_SBALES_PER_REQ * 8 / 2; |
| 671 | } |
| 672 | |
| 673 | scsi_host_set_prot(shost, mask); |
| 674 | } |
| 675 | |
| 676 | /** |
| 677 | * zfcp_scsi_dif_sense_error - Report DIF/DIX error as driver sense error |
| 678 | * @scmd: The SCSI command to report the error for |
| 679 | * @ascq: The ASCQ to put in the sense buffer |
| 680 | * |
| 681 | * See the error handling in sd_done for the sense codes used here. |
| 682 | * Set DID_SOFT_ERROR to retry the request, if possible. |
| 683 | */ |
| 684 | void zfcp_scsi_dif_sense_error(struct scsi_cmnd *scmd, int ascq) |
| 685 | { |
| 686 | scsi_build_sense_buffer(1, scmd->sense_buffer, |
| 687 | ILLEGAL_REQUEST, 0x10, ascq); |
| 688 | set_driver_byte(scmd, DRIVER_SENSE); |
| 689 | scmd->result |= SAM_STAT_CHECK_CONDITION; |
| 690 | set_host_byte(scmd, DID_SOFT_ERROR); |
| 691 | } |
| 692 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 693 | struct fc_function_template zfcp_transport_functions = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 694 | .show_starget_port_id = 1, |
| 695 | .show_starget_port_name = 1, |
| 696 | .show_starget_node_name = 1, |
Andreas Herrmann | 3859f6a | 2005-08-27 11:07:54 -0700 | [diff] [blame] | 697 | .show_rport_supported_classes = 1, |
Ralph Wuerthner | 75bfc28 | 2006-05-22 18:24:33 +0200 | [diff] [blame] | 698 | .show_rport_maxframe_size = 1, |
Andreas Herrmann | 338151e | 2006-05-22 18:25:56 +0200 | [diff] [blame] | 699 | .show_rport_dev_loss_tmo = 1, |
Andreas Herrmann | 3859f6a | 2005-08-27 11:07:54 -0700 | [diff] [blame] | 700 | .show_host_node_name = 1, |
| 701 | .show_host_port_name = 1, |
Andreas Herrmann | ad757cd | 2006-01-13 02:26:11 +0100 | [diff] [blame] | 702 | .show_host_permanent_port_name = 1, |
Andreas Herrmann | 3859f6a | 2005-08-27 11:07:54 -0700 | [diff] [blame] | 703 | .show_host_supported_classes = 1, |
Christof Schmitt | 0fdd213 | 2009-11-24 16:54:17 +0100 | [diff] [blame] | 704 | .show_host_supported_fc4s = 1, |
Andreas Herrmann | ad757cd | 2006-01-13 02:26:11 +0100 | [diff] [blame] | 705 | .show_host_supported_speeds = 1, |
Andreas Herrmann | 13e1e1f | 2005-09-19 16:56:17 +0200 | [diff] [blame] | 706 | .show_host_maxframe_size = 1, |
Andreas Herrmann | 3859f6a | 2005-08-27 11:07:54 -0700 | [diff] [blame] | 707 | .show_host_serial_number = 1, |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 708 | .get_fc_host_stats = zfcp_get_fc_host_stats, |
| 709 | .reset_fc_host_stats = zfcp_reset_fc_host_stats, |
Andreas Herrmann | 338151e | 2006-05-22 18:25:56 +0200 | [diff] [blame] | 710 | .set_rport_dev_loss_tmo = zfcp_set_rport_dev_loss_tmo, |
Sven Schuetz | 85a8239 | 2008-06-10 18:20:59 +0200 | [diff] [blame] | 711 | .get_host_port_state = zfcp_get_host_port_state, |
Christof Schmitt | a2fa0ae | 2009-03-02 13:09:08 +0100 | [diff] [blame] | 712 | .terminate_rport_io = zfcp_scsi_terminate_rport_io, |
Sven Schuetz | 85a8239 | 2008-06-10 18:20:59 +0200 | [diff] [blame] | 713 | .show_host_port_state = 1, |
Christof Schmitt | 0fdd213 | 2009-11-24 16:54:17 +0100 | [diff] [blame] | 714 | .show_host_active_fc4s = 1, |
Christof Schmitt | 7c7dc19 | 2009-11-24 16:54:13 +0100 | [diff] [blame] | 715 | .bsg_request = zfcp_fc_exec_bsg_job, |
Swen Schillig | 491ca44 | 2010-01-14 17:19:01 +0100 | [diff] [blame] | 716 | .bsg_timeout = zfcp_fc_timeout_bsg_job, |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 717 | /* no functions registered for following dynamic attributes but |
| 718 | directly set by LLDD */ |
Andreas Herrmann | ad757cd | 2006-01-13 02:26:11 +0100 | [diff] [blame] | 719 | .show_host_port_type = 1, |
Christof Schmitt | 038d944 | 2011-02-22 19:54:48 +0100 | [diff] [blame] | 720 | .show_host_symbolic_name = 1, |
Andreas Herrmann | 13e1e1f | 2005-09-19 16:56:17 +0200 | [diff] [blame] | 721 | .show_host_speed = 1, |
| 722 | .show_host_port_id = 1, |
Christof Schmitt | 7c7dc19 | 2009-11-24 16:54:13 +0100 | [diff] [blame] | 723 | .dd_bsg_size = sizeof(struct zfcp_fsf_ct_els), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 724 | }; |