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 | 553448f | 2008-06-10 18:20:58 +0200 | [diff] [blame] | 6 | * Copyright IBM Corporation 2002, 2008 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | */ |
| 8 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 9 | #include "zfcp_ext.h" |
Christof Schmitt | 5f852be | 2007-05-08 11:16:52 +0200 | [diff] [blame] | 10 | #include <asm/atomic.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 11 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 12 | /* Find start of Sense Information in FCP response unit*/ |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame^] | 13 | char *zfcp_get_fcp_sns_info_ptr(struct fcp_rsp_iu *fcp_rsp_iu) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 14 | { |
| 15 | char *fcp_sns_info_ptr; |
| 16 | |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame^] | 17 | fcp_sns_info_ptr = (unsigned char *) &fcp_rsp_iu[1]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 18 | if (fcp_rsp_iu->validity.bits.fcp_rsp_len_valid) |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame^] | 19 | fcp_sns_info_ptr += fcp_rsp_iu->fcp_rsp_len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 20 | |
| 21 | return fcp_sns_info_ptr; |
| 22 | } |
| 23 | |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame^] | 24 | void zfcp_set_fcp_dl(struct fcp_cmnd_iu *fcp_cmd, fcp_dl_t fcp_dl) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 25 | { |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame^] | 26 | fcp_dl_t *fcp_dl_ptr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 27 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 28 | /* |
Swen Schillig | 41fa2ad | 2007-09-07 09:15:31 +0200 | [diff] [blame] | 29 | * fcp_dl_addr = start address of fcp_cmnd structure + |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | * size of fixed part + size of dynamically sized add_dcp_cdb field |
| 31 | * SEE FCP-2 documentation |
| 32 | */ |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame^] | 33 | fcp_dl_ptr = (fcp_dl_t *) ((unsigned char *) &fcp_cmd[1] + |
| 34 | (fcp_cmd->add_fcp_cdb_length << 2)); |
| 35 | *fcp_dl_ptr = fcp_dl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 36 | } |
| 37 | |
Andreas Herrmann | f6c0e7a | 2006-08-02 11:05:52 +0200 | [diff] [blame] | 38 | static void zfcp_scsi_slave_destroy(struct scsi_device *sdpnt) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 39 | { |
| 40 | struct zfcp_unit *unit = (struct zfcp_unit *) sdpnt->hostdata; |
Christof Schmitt | 553448f | 2008-06-10 18:20:58 +0200 | [diff] [blame] | 41 | WARN_ON(!unit); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | if (unit) { |
Andreas Herrmann | ad58f7d | 2006-03-10 00:56:16 +0100 | [diff] [blame] | 43 | atomic_clear_mask(ZFCP_STATUS_UNIT_REGISTERED, &unit->status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | sdpnt->hostdata = NULL; |
| 45 | unit->device = NULL; |
Martin Peschke | 1f6f712 | 2008-04-18 12:51:55 +0200 | [diff] [blame] | 46 | zfcp_erp_unit_failed(unit, 12, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | zfcp_unit_put(unit); |
Christof Schmitt | 553448f | 2008-06-10 18:20:58 +0200 | [diff] [blame] | 48 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | } |
| 50 | |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame^] | 51 | static int zfcp_scsi_slave_configure(struct scsi_device *sdp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | { |
| 53 | if (sdp->tagged_supported) |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame^] | 54 | scsi_adjust_queue_depth(sdp, MSG_SIMPLE_TAG, 32); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 55 | else |
| 56 | scsi_adjust_queue_depth(sdp, 0, 1); |
| 57 | return 0; |
| 58 | } |
| 59 | |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame^] | 60 | static void zfcp_scsi_command_fail(struct scsi_cmnd *scpnt, int result) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 61 | { |
Martin Petermann | feac6a0 | 2008-07-02 10:56:35 +0200 | [diff] [blame] | 62 | set_host_byte(scpnt, result); |
Maxim Shchetynin | 8a36e45 | 2005-09-13 21:50:38 +0200 | [diff] [blame] | 63 | if ((scpnt->device != NULL) && (scpnt->device->host != NULL)) |
| 64 | zfcp_scsi_dbf_event_result("fail", 4, |
| 65 | (struct zfcp_adapter*) scpnt->device->host->hostdata[0], |
Maxim Shchetynin | ed829ad | 2006-02-11 01:42:58 +0100 | [diff] [blame] | 66 | scpnt, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 67 | /* return directly */ |
| 68 | scpnt->scsi_done(scpnt); |
| 69 | } |
| 70 | |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame^] | 71 | static int zfcp_scsi_queuecommand(struct scsi_cmnd *scpnt, |
| 72 | void (*done) (struct scsi_cmnd *)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 73 | { |
| 74 | struct zfcp_unit *unit; |
| 75 | struct zfcp_adapter *adapter; |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame^] | 76 | int status; |
| 77 | int ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 78 | |
| 79 | /* reset the status for this request */ |
| 80 | scpnt->result = 0; |
| 81 | scpnt->host_scribble = NULL; |
| 82 | scpnt->scsi_done = done; |
| 83 | |
| 84 | /* |
| 85 | * figure out adapter and target device |
| 86 | * (stored there by zfcp_scsi_slave_alloc) |
| 87 | */ |
| 88 | adapter = (struct zfcp_adapter *) scpnt->device->host->hostdata[0]; |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame^] | 89 | unit = scpnt->device->hostdata; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 90 | |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame^] | 91 | BUG_ON(!adapter || (adapter != unit->port->adapter)); |
| 92 | BUG_ON(!scpnt->scsi_done); |
| 93 | |
| 94 | if (unlikely(!unit)) { |
| 95 | zfcp_scsi_command_fail(scpnt, DID_NO_CONNECT); |
| 96 | return 0; |
| 97 | } |
| 98 | |
| 99 | status = atomic_read(&unit->status); |
| 100 | if (unlikely((status & ZFCP_STATUS_COMMON_ERP_FAILED) || |
| 101 | !(status & ZFCP_STATUS_COMMON_RUNNING))) { |
| 102 | zfcp_scsi_command_fail(scpnt, DID_ERROR); |
| 103 | return 0;; |
| 104 | } |
| 105 | |
| 106 | ret = zfcp_fsf_send_fcp_command_task(adapter, unit, scpnt, 0, |
| 107 | ZFCP_REQ_AUTO_CLEANUP); |
| 108 | if (unlikely(ret == -EBUSY)) |
| 109 | zfcp_scsi_command_fail(scpnt, DID_NO_CONNECT); |
| 110 | else if (unlikely(ret < 0)) |
| 111 | return SCSI_MLQUEUE_HOST_BUSY; |
| 112 | |
| 113 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 114 | } |
| 115 | |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame^] | 116 | static struct zfcp_unit *zfcp_unit_lookup(struct zfcp_adapter *adapter, |
| 117 | int channel, unsigned int id, |
| 118 | unsigned int lun) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 119 | { |
| 120 | struct zfcp_port *port; |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame^] | 121 | struct zfcp_unit *unit; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 122 | |
| 123 | list_for_each_entry(port, &adapter->port_list_head, list) { |
Andreas Herrmann | 3859f6a | 2005-08-27 11:07:54 -0700 | [diff] [blame] | 124 | if (!port->rport || (id != port->rport->scsi_target_id)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 125 | continue; |
Christof Schmitt | 6b76a72 | 2007-08-28 09:30:59 +0200 | [diff] [blame] | 126 | list_for_each_entry(unit, &port->unit_list_head, list) |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame^] | 127 | if (lun == unit->scsi_lun) |
| 128 | return unit; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 129 | } |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame^] | 130 | |
| 131 | return NULL; |
| 132 | } |
| 133 | |
| 134 | static int zfcp_scsi_slave_alloc(struct scsi_device *sdp) |
| 135 | { |
| 136 | struct zfcp_adapter *adapter; |
| 137 | struct zfcp_unit *unit; |
| 138 | unsigned long flags; |
| 139 | int retval = -ENXIO; |
| 140 | |
| 141 | adapter = (struct zfcp_adapter *) sdp->host->hostdata[0]; |
| 142 | if (!adapter) |
| 143 | goto out; |
| 144 | |
| 145 | read_lock_irqsave(&zfcp_data.config_lock, flags); |
| 146 | unit = zfcp_unit_lookup(adapter, sdp->channel, sdp->id, sdp->lun); |
| 147 | if (unit && |
| 148 | (atomic_read(&unit->status) & ZFCP_STATUS_UNIT_REGISTERED)) { |
| 149 | sdp->hostdata = unit; |
| 150 | unit->device = sdp; |
| 151 | zfcp_unit_get(unit); |
| 152 | retval = 0; |
| 153 | } |
| 154 | read_unlock_irqrestore(&zfcp_data.config_lock, flags); |
| 155 | out: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 156 | return retval; |
| 157 | } |
| 158 | |
Heiko Carstens | 2b67fc4 | 2007-02-05 21:16:47 +0100 | [diff] [blame] | 159 | static int zfcp_scsi_eh_abort_handler(struct scsi_cmnd *scpnt) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 160 | { |
Andreas Herrmann | 059c97d | 2005-09-13 21:47:52 +0200 | [diff] [blame] | 161 | struct Scsi_Host *scsi_host; |
| 162 | struct zfcp_adapter *adapter; |
| 163 | struct zfcp_unit *unit; |
Andreas Herrmann | 4eff4a3 | 2006-09-18 22:29:20 +0200 | [diff] [blame] | 164 | struct zfcp_fsf_req *fsf_req; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 165 | unsigned long flags; |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame^] | 166 | unsigned long old_req_id = (unsigned long) scpnt->host_scribble; |
Andreas Herrmann | 4eff4a3 | 2006-09-18 22:29:20 +0200 | [diff] [blame] | 167 | int retval = SUCCESS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 168 | |
Andreas Herrmann | 059c97d | 2005-09-13 21:47:52 +0200 | [diff] [blame] | 169 | scsi_host = scpnt->device->host; |
| 170 | adapter = (struct zfcp_adapter *) scsi_host->hostdata[0]; |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame^] | 171 | unit = scpnt->device->hostdata; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 172 | |
Andreas Herrmann | 059c97d | 2005-09-13 21:47:52 +0200 | [diff] [blame] | 173 | /* avoid race condition between late normal completion and abort */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 174 | write_lock_irqsave(&adapter->abort_lock, flags); |
| 175 | |
Andreas Herrmann | 4eff4a3 | 2006-09-18 22:29:20 +0200 | [diff] [blame] | 176 | /* Check whether corresponding fsf_req is still pending */ |
| 177 | spin_lock(&adapter->req_list_lock); |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame^] | 178 | fsf_req = zfcp_reqlist_find(adapter, old_req_id); |
Andreas Herrmann | 4eff4a3 | 2006-09-18 22:29:20 +0200 | [diff] [blame] | 179 | spin_unlock(&adapter->req_list_lock); |
| 180 | if (!fsf_req) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 181 | write_unlock_irqrestore(&adapter->abort_lock, flags); |
Andreas Herrmann | 4eff4a3 | 2006-09-18 22:29:20 +0200 | [diff] [blame] | 182 | zfcp_scsi_dbf_event_abort("lte1", adapter, scpnt, NULL, 0); |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame^] | 183 | return retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 184 | } |
Andreas Herrmann | 4eff4a3 | 2006-09-18 22:29:20 +0200 | [diff] [blame] | 185 | fsf_req->data = 0; |
| 186 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ABORTING; |
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 | |
| 191 | fsf_req = zfcp_fsf_abort_fcp_command(old_req_id, adapter, unit, 0); |
| 192 | if (!fsf_req) { |
Maxim Shchetynin | ed829ad | 2006-02-11 01:42:58 +0100 | [diff] [blame] | 193 | zfcp_scsi_dbf_event_abort("nres", adapter, scpnt, NULL, |
Andreas Herrmann | 4eff4a3 | 2006-09-18 22:29:20 +0200 | [diff] [blame] | 194 | old_req_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 195 | retval = FAILED; |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame^] | 196 | return retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 197 | } |
| 198 | |
Andreas Herrmann | 4eff4a3 | 2006-09-18 22:29:20 +0200 | [diff] [blame] | 199 | __wait_event(fsf_req->completion_wq, |
| 200 | fsf_req->status & ZFCP_STATUS_FSFREQ_COMPLETED); |
Andreas Herrmann | 059c97d | 2005-09-13 21:47:52 +0200 | [diff] [blame] | 201 | |
Andreas Herrmann | 4eff4a3 | 2006-09-18 22:29:20 +0200 | [diff] [blame] | 202 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED) { |
| 203 | zfcp_scsi_dbf_event_abort("okay", adapter, scpnt, fsf_req, 0); |
Andreas Herrmann | 4eff4a3 | 2006-09-18 22:29:20 +0200 | [diff] [blame] | 204 | } else if (fsf_req->status & ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED) { |
| 205 | zfcp_scsi_dbf_event_abort("lte2", adapter, scpnt, fsf_req, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 206 | } else { |
Andreas Herrmann | 4eff4a3 | 2006-09-18 22:29:20 +0200 | [diff] [blame] | 207 | zfcp_scsi_dbf_event_abort("fail", adapter, scpnt, fsf_req, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 208 | retval = FAILED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 209 | } |
Andreas Herrmann | 4eff4a3 | 2006-09-18 22:29:20 +0200 | [diff] [blame] | 210 | zfcp_fsf_req_free(fsf_req); |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame^] | 211 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 212 | return retval; |
| 213 | } |
| 214 | |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame^] | 215 | static int zfcp_task_mgmt_function(struct zfcp_unit *unit, u8 tm_flags, |
| 216 | struct scsi_cmnd *scpnt) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 217 | { |
| 218 | struct zfcp_adapter *adapter = unit->port->adapter; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 219 | struct zfcp_fsf_req *fsf_req; |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame^] | 220 | int retval = SUCCESS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 221 | |
| 222 | /* issue task management function */ |
| 223 | fsf_req = zfcp_fsf_send_fcp_command_task_management |
| 224 | (adapter, unit, tm_flags, 0); |
| 225 | if (!fsf_req) { |
Maxim Shchetynin | 8a36e45 | 2005-09-13 21:50:38 +0200 | [diff] [blame] | 226 | zfcp_scsi_dbf_event_devreset("nres", tm_flags, unit, scpnt); |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame^] | 227 | return FAILED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 228 | } |
| 229 | |
Andreas Herrmann | 77eb169 | 2005-09-13 21:48:33 +0200 | [diff] [blame] | 230 | __wait_event(fsf_req->completion_wq, |
| 231 | fsf_req->status & ZFCP_STATUS_FSFREQ_COMPLETED); |
| 232 | |
Maxim Shchetynin | 8a36e45 | 2005-09-13 21:50:38 +0200 | [diff] [blame] | 233 | /* |
| 234 | * check completion status of task management function |
| 235 | */ |
| 236 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_TMFUNCFAILED) { |
| 237 | zfcp_scsi_dbf_event_devreset("fail", tm_flags, unit, scpnt); |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame^] | 238 | retval = FAILED; |
Maxim Shchetynin | 8a36e45 | 2005-09-13 21:50:38 +0200 | [diff] [blame] | 239 | } else if (fsf_req->status & ZFCP_STATUS_FSFREQ_TMFUNCNOTSUPP) { |
| 240 | zfcp_scsi_dbf_event_devreset("nsup", tm_flags, unit, scpnt); |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame^] | 241 | retval = FAILED; |
Maxim Shchetynin | 8a36e45 | 2005-09-13 21:50:38 +0200 | [diff] [blame] | 242 | } else |
| 243 | zfcp_scsi_dbf_event_devreset("okay", tm_flags, unit, scpnt); |
Andreas Herrmann | 77eb169 | 2005-09-13 21:48:33 +0200 | [diff] [blame] | 244 | |
| 245 | zfcp_fsf_req_free(fsf_req); |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame^] | 246 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 247 | return retval; |
| 248 | } |
| 249 | |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame^] | 250 | static int zfcp_scsi_eh_device_reset_handler(struct scsi_cmnd *scpnt) |
| 251 | { |
| 252 | struct zfcp_unit *unit = scpnt->device->hostdata; |
| 253 | |
| 254 | if (!unit) { |
| 255 | WARN_ON(1); |
| 256 | return SUCCESS; |
| 257 | } |
| 258 | return zfcp_task_mgmt_function(unit, FCP_LOGICAL_UNIT_RESET, scpnt); |
| 259 | } |
| 260 | |
| 261 | static int zfcp_scsi_eh_target_reset_handler(struct scsi_cmnd *scpnt) |
| 262 | { |
| 263 | struct zfcp_unit *unit = scpnt->device->hostdata; |
| 264 | |
| 265 | if (!unit) { |
| 266 | WARN_ON(1); |
| 267 | return SUCCESS; |
| 268 | } |
| 269 | return zfcp_task_mgmt_function(unit, FCP_TARGET_RESET, scpnt); |
| 270 | } |
| 271 | |
Heiko Carstens | 2b67fc4 | 2007-02-05 21:16:47 +0100 | [diff] [blame] | 272 | static int zfcp_scsi_eh_host_reset_handler(struct scsi_cmnd *scpnt) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 273 | { |
Andreas Herrmann | f6c0e7a | 2006-08-02 11:05:52 +0200 | [diff] [blame] | 274 | struct zfcp_unit *unit; |
| 275 | struct zfcp_adapter *adapter; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 276 | |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame^] | 277 | unit = scpnt->device->hostdata; |
Andreas Herrmann | f6c0e7a | 2006-08-02 11:05:52 +0200 | [diff] [blame] | 278 | adapter = unit->port->adapter; |
Martin Peschke | 1f6f712 | 2008-04-18 12:51:55 +0200 | [diff] [blame] | 279 | zfcp_erp_adapter_reopen(adapter, 0, 141, scpnt); |
Andreas Herrmann | 8165428 | 2006-09-18 22:30:36 +0200 | [diff] [blame] | 280 | zfcp_erp_wait(adapter); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 281 | |
Andreas Herrmann | 810f1e3e | 2005-09-13 21:49:52 +0200 | [diff] [blame] | 282 | return SUCCESS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 283 | } |
| 284 | |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame^] | 285 | int zfcp_adapter_scsi_register(struct zfcp_adapter *adapter) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 286 | { |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame^] | 287 | struct ccw_dev_id dev_id; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 288 | |
Michael Loehr | 9f28745 | 2007-05-09 11:01:24 +0200 | [diff] [blame] | 289 | if (adapter->scsi_host) |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame^] | 290 | return 0; |
Michael Loehr | 9f28745 | 2007-05-09 11:01:24 +0200 | [diff] [blame] | 291 | |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame^] | 292 | ccw_device_get_id(adapter->ccw_device, &dev_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 293 | /* register adapter as SCSI host with mid layer of SCSI stack */ |
| 294 | adapter->scsi_host = scsi_host_alloc(&zfcp_data.scsi_host_template, |
| 295 | sizeof (struct zfcp_adapter *)); |
| 296 | if (!adapter->scsi_host) { |
Christof Schmitt | 553448f | 2008-06-10 18:20:58 +0200 | [diff] [blame] | 297 | dev_err(&adapter->ccw_device->dev, |
| 298 | "registration with SCSI stack failed."); |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame^] | 299 | return -EIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 300 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 301 | |
| 302 | /* tell the SCSI stack some characteristics of this adapter */ |
| 303 | adapter->scsi_host->max_id = 1; |
| 304 | adapter->scsi_host->max_lun = 1; |
| 305 | adapter->scsi_host->max_channel = 0; |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame^] | 306 | adapter->scsi_host->unique_id = dev_id.devno; |
| 307 | adapter->scsi_host->max_cmd_len = 255; |
Heiko Carstens | dd52e0e | 2006-09-18 22:28:49 +0200 | [diff] [blame] | 308 | adapter->scsi_host->transportt = zfcp_data.scsi_transport_template; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 309 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 310 | adapter->scsi_host->hostdata[0] = (unsigned long) adapter; |
| 311 | |
| 312 | if (scsi_add_host(adapter->scsi_host, &adapter->ccw_device->dev)) { |
| 313 | scsi_host_put(adapter->scsi_host); |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame^] | 314 | return -EIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 315 | } |
| 316 | atomic_set_mask(ZFCP_STATUS_ADAPTER_REGISTERED, &adapter->status); |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame^] | 317 | |
| 318 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 319 | } |
| 320 | |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame^] | 321 | void zfcp_adapter_scsi_unregister(struct zfcp_adapter *adapter) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 322 | { |
| 323 | struct Scsi_Host *shost; |
Andreas Herrmann | 13e1e1f | 2005-09-19 16:56:17 +0200 | [diff] [blame] | 324 | struct zfcp_port *port; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 325 | |
| 326 | shost = adapter->scsi_host; |
| 327 | if (!shost) |
| 328 | return; |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame^] | 329 | |
Andreas Herrmann | 13e1e1f | 2005-09-19 16:56:17 +0200 | [diff] [blame] | 330 | read_lock_irq(&zfcp_data.config_lock); |
| 331 | list_for_each_entry(port, &adapter->port_list_head, list) |
| 332 | if (port->rport) |
| 333 | port->rport = NULL; |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame^] | 334 | |
Andreas Herrmann | 13e1e1f | 2005-09-19 16:56:17 +0200 | [diff] [blame] | 335 | read_unlock_irq(&zfcp_data.config_lock); |
Andreas Herrmann | 3859f6a | 2005-08-27 11:07:54 -0700 | [diff] [blame] | 336 | fc_remove_host(shost); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 337 | scsi_remove_host(shost); |
| 338 | scsi_host_put(shost); |
| 339 | adapter->scsi_host = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 340 | atomic_clear_mask(ZFCP_STATUS_ADAPTER_REGISTERED, &adapter->status); |
| 341 | |
| 342 | return; |
| 343 | } |
| 344 | |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 345 | static struct fc_host_statistics* |
| 346 | zfcp_init_fc_host_stats(struct zfcp_adapter *adapter) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 347 | { |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 348 | struct fc_host_statistics *fc_stats; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 349 | |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 350 | if (!adapter->fc_stats) { |
| 351 | fc_stats = kmalloc(sizeof(*fc_stats), GFP_KERNEL); |
| 352 | if (!fc_stats) |
| 353 | return NULL; |
| 354 | adapter->fc_stats = fc_stats; /* freed in adater_dequeue */ |
| 355 | } |
| 356 | memset(adapter->fc_stats, 0, sizeof(*adapter->fc_stats)); |
| 357 | return adapter->fc_stats; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 358 | } |
| 359 | |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame^] | 360 | static void zfcp_adjust_fc_host_stats(struct fc_host_statistics *fc_stats, |
| 361 | struct fsf_qtcb_bottom_port *data, |
| 362 | struct fsf_qtcb_bottom_port *old) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 363 | { |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame^] | 364 | fc_stats->seconds_since_last_reset = |
| 365 | data->seconds_since_last_reset - old->seconds_since_last_reset; |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 366 | fc_stats->tx_frames = data->tx_frames - old->tx_frames; |
| 367 | fc_stats->tx_words = data->tx_words - old->tx_words; |
| 368 | fc_stats->rx_frames = data->rx_frames - old->rx_frames; |
| 369 | fc_stats->rx_words = data->rx_words - old->rx_words; |
| 370 | fc_stats->lip_count = data->lip - old->lip; |
| 371 | fc_stats->nos_count = data->nos - old->nos; |
| 372 | fc_stats->error_frames = data->error_frames - old->error_frames; |
| 373 | fc_stats->dumped_frames = data->dumped_frames - old->dumped_frames; |
| 374 | fc_stats->link_failure_count = data->link_failure - old->link_failure; |
| 375 | 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^] | 376 | fc_stats->loss_of_signal_count = |
| 377 | data->loss_of_signal - old->loss_of_signal; |
| 378 | fc_stats->prim_seq_protocol_err_count = |
| 379 | data->psp_error_counts - old->psp_error_counts; |
| 380 | fc_stats->invalid_tx_word_count = |
| 381 | data->invalid_tx_words - old->invalid_tx_words; |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 382 | fc_stats->invalid_crc_count = data->invalid_crcs - old->invalid_crcs; |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame^] | 383 | fc_stats->fcp_input_requests = |
| 384 | data->input_requests - old->input_requests; |
| 385 | fc_stats->fcp_output_requests = |
| 386 | data->output_requests - old->output_requests; |
| 387 | fc_stats->fcp_control_requests = |
| 388 | data->control_requests - old->control_requests; |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 389 | fc_stats->fcp_input_megabytes = data->input_mb - old->input_mb; |
| 390 | fc_stats->fcp_output_megabytes = data->output_mb - old->output_mb; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 391 | } |
| 392 | |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame^] | 393 | static void zfcp_set_fc_host_stats(struct fc_host_statistics *fc_stats, |
| 394 | struct fsf_qtcb_bottom_port *data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 395 | { |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 396 | fc_stats->seconds_since_last_reset = data->seconds_since_last_reset; |
| 397 | fc_stats->tx_frames = data->tx_frames; |
| 398 | fc_stats->tx_words = data->tx_words; |
| 399 | fc_stats->rx_frames = data->rx_frames; |
| 400 | fc_stats->rx_words = data->rx_words; |
| 401 | fc_stats->lip_count = data->lip; |
| 402 | fc_stats->nos_count = data->nos; |
| 403 | fc_stats->error_frames = data->error_frames; |
| 404 | fc_stats->dumped_frames = data->dumped_frames; |
| 405 | fc_stats->link_failure_count = data->link_failure; |
| 406 | fc_stats->loss_of_sync_count = data->loss_of_sync; |
| 407 | fc_stats->loss_of_signal_count = data->loss_of_signal; |
| 408 | fc_stats->prim_seq_protocol_err_count = data->psp_error_counts; |
| 409 | fc_stats->invalid_tx_word_count = data->invalid_tx_words; |
| 410 | fc_stats->invalid_crc_count = data->invalid_crcs; |
| 411 | fc_stats->fcp_input_requests = data->input_requests; |
| 412 | fc_stats->fcp_output_requests = data->output_requests; |
| 413 | fc_stats->fcp_control_requests = data->control_requests; |
| 414 | fc_stats->fcp_input_megabytes = data->input_mb; |
| 415 | fc_stats->fcp_output_megabytes = data->output_mb; |
| 416 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 417 | |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame^] | 418 | 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] | 419 | { |
| 420 | struct zfcp_adapter *adapter; |
| 421 | struct fc_host_statistics *fc_stats; |
| 422 | struct fsf_qtcb_bottom_port *data; |
| 423 | int ret; |
| 424 | |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame^] | 425 | adapter = (struct zfcp_adapter *)host->hostdata[0]; |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 426 | fc_stats = zfcp_init_fc_host_stats(adapter); |
| 427 | if (!fc_stats) |
| 428 | return NULL; |
| 429 | |
Andreas Herrmann | ec4081c | 2006-05-22 18:17:30 +0200 | [diff] [blame] | 430 | data = kzalloc(sizeof(*data), GFP_KERNEL); |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 431 | if (!data) |
| 432 | return NULL; |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 433 | |
Swen Schillig | 52ef11a | 2007-08-28 09:31:09 +0200 | [diff] [blame] | 434 | ret = zfcp_fsf_exchange_port_data_sync(adapter, data); |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 435 | if (ret) { |
| 436 | kfree(data); |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame^] | 437 | return NULL; |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 438 | } |
| 439 | |
| 440 | if (adapter->stats_reset && |
| 441 | ((jiffies/HZ - adapter->stats_reset) < |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame^] | 442 | data->seconds_since_last_reset)) |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 443 | zfcp_adjust_fc_host_stats(fc_stats, data, |
| 444 | adapter->stats_reset_data); |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame^] | 445 | else |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 446 | zfcp_set_fc_host_stats(fc_stats, data); |
| 447 | |
| 448 | kfree(data); |
| 449 | return fc_stats; |
| 450 | } |
| 451 | |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame^] | 452 | static void zfcp_reset_fc_host_stats(struct Scsi_Host *shost) |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 453 | { |
| 454 | struct zfcp_adapter *adapter; |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame^] | 455 | struct fsf_qtcb_bottom_port *data; |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 456 | int ret; |
| 457 | |
| 458 | adapter = (struct zfcp_adapter *)shost->hostdata[0]; |
Andreas Herrmann | ec4081c | 2006-05-22 18:17:30 +0200 | [diff] [blame] | 459 | data = kzalloc(sizeof(*data), GFP_KERNEL); |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 460 | if (!data) |
| 461 | return; |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 462 | |
Swen Schillig | 52ef11a | 2007-08-28 09:31:09 +0200 | [diff] [blame] | 463 | ret = zfcp_fsf_exchange_port_data_sync(adapter, data); |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame^] | 464 | if (ret) |
Heiko Carstens | 83f6d6d | 2007-08-08 10:47:02 +0200 | [diff] [blame] | 465 | kfree(data); |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame^] | 466 | else { |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 467 | adapter->stats_reset = jiffies/HZ; |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame^] | 468 | kfree(adapter->stats_reset_data); |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 469 | adapter->stats_reset_data = data; /* finally freed in |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame^] | 470 | adapter_dequeue */ |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 471 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 472 | } |
| 473 | |
Sven Schuetz | 85a8239 | 2008-06-10 18:20:59 +0200 | [diff] [blame] | 474 | static void zfcp_get_host_port_state(struct Scsi_Host *shost) |
| 475 | { |
| 476 | struct zfcp_adapter *adapter = |
| 477 | (struct zfcp_adapter *)shost->hostdata[0]; |
| 478 | int status = atomic_read(&adapter->status); |
| 479 | |
| 480 | if ((status & ZFCP_STATUS_COMMON_RUNNING) && |
| 481 | !(status & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED)) |
| 482 | fc_host_port_state(shost) = FC_PORTSTATE_ONLINE; |
| 483 | else if (status & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED) |
| 484 | fc_host_port_state(shost) = FC_PORTSTATE_LINKDOWN; |
| 485 | else if (status & ZFCP_STATUS_COMMON_ERP_FAILED) |
| 486 | fc_host_port_state(shost) = FC_PORTSTATE_ERROR; |
| 487 | else |
| 488 | fc_host_port_state(shost) = FC_PORTSTATE_UNKNOWN; |
| 489 | } |
| 490 | |
Andreas Herrmann | 338151e | 2006-05-22 18:25:56 +0200 | [diff] [blame] | 491 | static void zfcp_set_rport_dev_loss_tmo(struct fc_rport *rport, u32 timeout) |
| 492 | { |
| 493 | rport->dev_loss_tmo = timeout; |
| 494 | } |
| 495 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 496 | struct fc_function_template zfcp_transport_functions = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 497 | .show_starget_port_id = 1, |
| 498 | .show_starget_port_name = 1, |
| 499 | .show_starget_node_name = 1, |
Andreas Herrmann | 3859f6a | 2005-08-27 11:07:54 -0700 | [diff] [blame] | 500 | .show_rport_supported_classes = 1, |
Ralph Wuerthner | 75bfc28 | 2006-05-22 18:24:33 +0200 | [diff] [blame] | 501 | .show_rport_maxframe_size = 1, |
Andreas Herrmann | 338151e | 2006-05-22 18:25:56 +0200 | [diff] [blame] | 502 | .show_rport_dev_loss_tmo = 1, |
Andreas Herrmann | 3859f6a | 2005-08-27 11:07:54 -0700 | [diff] [blame] | 503 | .show_host_node_name = 1, |
| 504 | .show_host_port_name = 1, |
Andreas Herrmann | ad757cd | 2006-01-13 02:26:11 +0100 | [diff] [blame] | 505 | .show_host_permanent_port_name = 1, |
Andreas Herrmann | 3859f6a | 2005-08-27 11:07:54 -0700 | [diff] [blame] | 506 | .show_host_supported_classes = 1, |
Andreas Herrmann | ad757cd | 2006-01-13 02:26:11 +0100 | [diff] [blame] | 507 | .show_host_supported_speeds = 1, |
Andreas Herrmann | 13e1e1f | 2005-09-19 16:56:17 +0200 | [diff] [blame] | 508 | .show_host_maxframe_size = 1, |
Andreas Herrmann | 3859f6a | 2005-08-27 11:07:54 -0700 | [diff] [blame] | 509 | .show_host_serial_number = 1, |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 510 | .get_fc_host_stats = zfcp_get_fc_host_stats, |
| 511 | .reset_fc_host_stats = zfcp_reset_fc_host_stats, |
Andreas Herrmann | 338151e | 2006-05-22 18:25:56 +0200 | [diff] [blame] | 512 | .set_rport_dev_loss_tmo = zfcp_set_rport_dev_loss_tmo, |
Sven Schuetz | 85a8239 | 2008-06-10 18:20:59 +0200 | [diff] [blame] | 513 | .get_host_port_state = zfcp_get_host_port_state, |
| 514 | .show_host_port_state = 1, |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 515 | /* no functions registered for following dynamic attributes but |
| 516 | directly set by LLDD */ |
Andreas Herrmann | ad757cd | 2006-01-13 02:26:11 +0100 | [diff] [blame] | 517 | .show_host_port_type = 1, |
Andreas Herrmann | 13e1e1f | 2005-09-19 16:56:17 +0200 | [diff] [blame] | 518 | .show_host_speed = 1, |
| 519 | .show_host_port_id = 1, |
Swen Schillig | 52ef11a | 2007-08-28 09:31:09 +0200 | [diff] [blame] | 520 | .disable_target_scan = 1, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 521 | }; |
| 522 | |
Christof Schmitt | 3a0d9e9 | 2008-05-06 11:00:06 +0200 | [diff] [blame] | 523 | #define ZFCP_DEFINE_LATENCY_ATTR(_name) \ |
| 524 | static ssize_t \ |
| 525 | zfcp_sysfs_unit_##_name##_latency_show(struct device *dev, \ |
| 526 | struct device_attribute *attr, \ |
| 527 | char *buf) { \ |
| 528 | struct scsi_device *sdev = to_scsi_device(dev); \ |
| 529 | struct zfcp_unit *unit = sdev->hostdata; \ |
| 530 | struct zfcp_latencies *lat = &unit->latencies; \ |
| 531 | struct zfcp_adapter *adapter = unit->port->adapter; \ |
| 532 | unsigned long flags; \ |
| 533 | unsigned long long fsum, fmin, fmax, csum, cmin, cmax, cc; \ |
| 534 | \ |
| 535 | spin_lock_irqsave(&lat->lock, flags); \ |
| 536 | fsum = lat->_name.fabric.sum * adapter->timer_ticks; \ |
| 537 | fmin = lat->_name.fabric.min * adapter->timer_ticks; \ |
| 538 | fmax = lat->_name.fabric.max * adapter->timer_ticks; \ |
| 539 | csum = lat->_name.channel.sum * adapter->timer_ticks; \ |
| 540 | cmin = lat->_name.channel.min * adapter->timer_ticks; \ |
| 541 | cmax = lat->_name.channel.max * adapter->timer_ticks; \ |
| 542 | cc = lat->_name.counter; \ |
| 543 | spin_unlock_irqrestore(&lat->lock, flags); \ |
| 544 | \ |
| 545 | do_div(fsum, 1000); \ |
| 546 | do_div(fmin, 1000); \ |
| 547 | do_div(fmax, 1000); \ |
| 548 | do_div(csum, 1000); \ |
| 549 | do_div(cmin, 1000); \ |
| 550 | do_div(cmax, 1000); \ |
| 551 | \ |
| 552 | return sprintf(buf, "%llu %llu %llu %llu %llu %llu %llu\n", \ |
| 553 | fmin, fmax, fsum, cmin, cmax, csum, cc); \ |
| 554 | } \ |
| 555 | static ssize_t \ |
| 556 | zfcp_sysfs_unit_##_name##_latency_store(struct device *dev, \ |
| 557 | struct device_attribute *attr, \ |
| 558 | const char *buf, size_t count) \ |
| 559 | { \ |
| 560 | struct scsi_device *sdev = to_scsi_device(dev); \ |
| 561 | struct zfcp_unit *unit = sdev->hostdata; \ |
| 562 | struct zfcp_latencies *lat = &unit->latencies; \ |
| 563 | unsigned long flags; \ |
| 564 | \ |
| 565 | spin_lock_irqsave(&lat->lock, flags); \ |
| 566 | lat->_name.fabric.sum = 0; \ |
| 567 | lat->_name.fabric.min = 0xFFFFFFFF; \ |
| 568 | lat->_name.fabric.max = 0; \ |
| 569 | lat->_name.channel.sum = 0; \ |
| 570 | lat->_name.channel.min = 0xFFFFFFFF; \ |
| 571 | lat->_name.channel.max = 0; \ |
| 572 | lat->_name.counter = 0; \ |
| 573 | spin_unlock_irqrestore(&lat->lock, flags); \ |
| 574 | \ |
| 575 | return (ssize_t) count; \ |
| 576 | } \ |
| 577 | static DEVICE_ATTR(_name##_latency, S_IWUSR | S_IRUGO, \ |
| 578 | zfcp_sysfs_unit_##_name##_latency_show, \ |
| 579 | zfcp_sysfs_unit_##_name##_latency_store); |
| 580 | |
| 581 | ZFCP_DEFINE_LATENCY_ATTR(read); |
| 582 | ZFCP_DEFINE_LATENCY_ATTR(write); |
| 583 | ZFCP_DEFINE_LATENCY_ATTR(cmd); |
| 584 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 585 | #define ZFCP_DEFINE_SCSI_ATTR(_name, _format, _value) \ |
Yani Ioannou | 10523b3 | 2005-05-17 06:43:37 -0400 | [diff] [blame] | 586 | static ssize_t zfcp_sysfs_scsi_##_name##_show(struct device *dev, struct device_attribute *attr, \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 587 | char *buf) \ |
| 588 | { \ |
| 589 | struct scsi_device *sdev; \ |
| 590 | struct zfcp_unit *unit; \ |
| 591 | \ |
| 592 | sdev = to_scsi_device(dev); \ |
| 593 | unit = sdev->hostdata; \ |
| 594 | return sprintf(buf, _format, _value); \ |
| 595 | } \ |
| 596 | \ |
| 597 | static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_scsi_##_name##_show, NULL); |
| 598 | |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame^] | 599 | ZFCP_DEFINE_SCSI_ATTR(hba_id, "%s\n", |
| 600 | unit->port->adapter->ccw_device->dev.bus_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 601 | ZFCP_DEFINE_SCSI_ATTR(wwpn, "0x%016llx\n", unit->port->wwpn); |
| 602 | ZFCP_DEFINE_SCSI_ATTR(fcp_lun, "0x%016llx\n", unit->fcp_lun); |
| 603 | |
| 604 | static struct device_attribute *zfcp_sysfs_sdev_attrs[] = { |
| 605 | &dev_attr_fcp_lun, |
| 606 | &dev_attr_wwpn, |
| 607 | &dev_attr_hba_id, |
Christof Schmitt | 3a0d9e9 | 2008-05-06 11:00:06 +0200 | [diff] [blame] | 608 | &dev_attr_read_latency, |
| 609 | &dev_attr_write_latency, |
| 610 | &dev_attr_cmd_latency, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 611 | NULL |
| 612 | }; |
| 613 | |
Swen Schillig | 6d9d63b | 2008-04-24 19:35:54 +0200 | [diff] [blame] | 614 | static ssize_t zfcp_sysfs_adapter_util_show(struct device *dev, |
| 615 | struct device_attribute *attr, |
| 616 | char *buf) |
| 617 | { |
| 618 | struct Scsi_Host *scsi_host = dev_to_shost(dev); |
| 619 | struct fsf_qtcb_bottom_port *qtcb_port; |
Swen Schillig | 6d9d63b | 2008-04-24 19:35:54 +0200 | [diff] [blame] | 620 | struct zfcp_adapter *adapter; |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame^] | 621 | int retval; |
Swen Schillig | 6d9d63b | 2008-04-24 19:35:54 +0200 | [diff] [blame] | 622 | |
| 623 | adapter = (struct zfcp_adapter *) scsi_host->hostdata[0]; |
| 624 | if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA)) |
| 625 | return -EOPNOTSUPP; |
| 626 | |
| 627 | qtcb_port = kzalloc(sizeof(struct fsf_qtcb_bottom_port), GFP_KERNEL); |
| 628 | if (!qtcb_port) |
| 629 | return -ENOMEM; |
| 630 | |
| 631 | retval = zfcp_fsf_exchange_port_data_sync(adapter, qtcb_port); |
| 632 | if (!retval) |
| 633 | retval = sprintf(buf, "%u %u %u\n", qtcb_port->cp_util, |
| 634 | qtcb_port->cb_util, qtcb_port->a_util); |
| 635 | kfree(qtcb_port); |
| 636 | return retval; |
| 637 | } |
| 638 | |
| 639 | static int zfcp_sysfs_adapter_ex_config(struct device *dev, |
| 640 | struct fsf_statistics_info *stat_inf) |
| 641 | { |
Swen Schillig | 6d9d63b | 2008-04-24 19:35:54 +0200 | [diff] [blame] | 642 | struct Scsi_Host *scsi_host = dev_to_shost(dev); |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame^] | 643 | struct fsf_qtcb_bottom_config *qtcb_config; |
Swen Schillig | 6d9d63b | 2008-04-24 19:35:54 +0200 | [diff] [blame] | 644 | struct zfcp_adapter *adapter; |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame^] | 645 | int retval; |
Swen Schillig | 6d9d63b | 2008-04-24 19:35:54 +0200 | [diff] [blame] | 646 | |
| 647 | adapter = (struct zfcp_adapter *) scsi_host->hostdata[0]; |
| 648 | if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA)) |
| 649 | return -EOPNOTSUPP; |
| 650 | |
| 651 | qtcb_config = kzalloc(sizeof(struct fsf_qtcb_bottom_config), |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame^] | 652 | GFP_KERNEL); |
Swen Schillig | 6d9d63b | 2008-04-24 19:35:54 +0200 | [diff] [blame] | 653 | if (!qtcb_config) |
| 654 | return -ENOMEM; |
| 655 | |
| 656 | retval = zfcp_fsf_exchange_config_data_sync(adapter, qtcb_config); |
| 657 | if (!retval) |
| 658 | *stat_inf = qtcb_config->stat_info; |
| 659 | |
| 660 | kfree(qtcb_config); |
| 661 | return retval; |
| 662 | } |
| 663 | |
| 664 | static ssize_t zfcp_sysfs_adapter_request_show(struct device *dev, |
| 665 | struct device_attribute *attr, |
| 666 | char *buf) |
| 667 | { |
| 668 | struct fsf_statistics_info stat_info; |
| 669 | int retval; |
| 670 | |
| 671 | retval = zfcp_sysfs_adapter_ex_config(dev, &stat_info); |
| 672 | if (retval) |
| 673 | return retval; |
| 674 | |
| 675 | return sprintf(buf, "%llu %llu %llu\n", |
| 676 | (unsigned long long) stat_info.input_req, |
| 677 | (unsigned long long) stat_info.output_req, |
| 678 | (unsigned long long) stat_info.control_req); |
| 679 | } |
| 680 | |
| 681 | static ssize_t zfcp_sysfs_adapter_mb_show(struct device *dev, |
| 682 | struct device_attribute *attr, |
| 683 | char *buf) |
| 684 | { |
| 685 | struct fsf_statistics_info stat_info; |
| 686 | int retval; |
| 687 | |
| 688 | retval = zfcp_sysfs_adapter_ex_config(dev, &stat_info); |
| 689 | if (retval) |
| 690 | return retval; |
| 691 | |
| 692 | return sprintf(buf, "%llu %llu\n", |
| 693 | (unsigned long long) stat_info.input_mb, |
| 694 | (unsigned long long) stat_info.output_mb); |
| 695 | } |
| 696 | |
| 697 | static ssize_t zfcp_sysfs_adapter_sec_active_show(struct device *dev, |
| 698 | struct device_attribute *attr, |
| 699 | char *buf) |
| 700 | { |
| 701 | struct fsf_statistics_info stat_info; |
| 702 | int retval; |
| 703 | |
| 704 | retval = zfcp_sysfs_adapter_ex_config(dev, &stat_info); |
| 705 | if (retval) |
| 706 | return retval; |
| 707 | |
| 708 | return sprintf(buf, "%llu\n", |
| 709 | (unsigned long long) stat_info.seconds_act); |
| 710 | } |
| 711 | |
| 712 | static DEVICE_ATTR(utilization, S_IRUGO, zfcp_sysfs_adapter_util_show, NULL); |
| 713 | static DEVICE_ATTR(requests, S_IRUGO, zfcp_sysfs_adapter_request_show, NULL); |
| 714 | static DEVICE_ATTR(megabytes, S_IRUGO, zfcp_sysfs_adapter_mb_show, NULL); |
| 715 | static DEVICE_ATTR(seconds_active, S_IRUGO, |
| 716 | zfcp_sysfs_adapter_sec_active_show, NULL); |
| 717 | |
| 718 | static struct device_attribute *zfcp_a_stats_attrs[] = { |
| 719 | &dev_attr_utilization, |
| 720 | &dev_attr_requests, |
| 721 | &dev_attr_megabytes, |
| 722 | &dev_attr_seconds_active, |
| 723 | NULL |
| 724 | }; |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame^] | 725 | |
| 726 | struct zfcp_data zfcp_data = { |
| 727 | .scsi_host_template = { |
| 728 | .name = "zfcp", |
| 729 | .module = THIS_MODULE, |
| 730 | .proc_name = "zfcp", |
| 731 | .slave_alloc = zfcp_scsi_slave_alloc, |
| 732 | .slave_configure = zfcp_scsi_slave_configure, |
| 733 | .slave_destroy = zfcp_scsi_slave_destroy, |
| 734 | .queuecommand = zfcp_scsi_queuecommand, |
| 735 | .eh_abort_handler = zfcp_scsi_eh_abort_handler, |
| 736 | .eh_device_reset_handler = zfcp_scsi_eh_device_reset_handler, |
| 737 | .eh_target_reset_handler = zfcp_scsi_eh_target_reset_handler, |
| 738 | .eh_host_reset_handler = zfcp_scsi_eh_host_reset_handler, |
| 739 | .can_queue = 4096, |
| 740 | .this_id = -1, |
| 741 | .sg_tablesize = ZFCP_MAX_SBALES_PER_REQ, |
| 742 | .cmd_per_lun = 1, |
| 743 | .use_clustering = 1, |
| 744 | .sdev_attrs = zfcp_sysfs_sdev_attrs, |
| 745 | .max_sectors = (ZFCP_MAX_SBALES_PER_REQ * 8), |
| 746 | .shost_attrs = zfcp_a_stats_attrs, |
| 747 | }, |
| 748 | }; |
| 749 | |