^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * zfcp device driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Interface to Linux SCSI midlayer.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Copyright IBM Corp. 2002, 2020
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #define KMSG_COMPONENT "zfcp"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <scsi/fc/fc_fcp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <scsi/scsi_eh.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/atomic.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include "zfcp_ext.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include "zfcp_dbf.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include "zfcp_fc.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include "zfcp_reqlist.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) static unsigned int default_depth = 32;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) module_param_named(queue_depth, default_depth, uint, 0600);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) MODULE_PARM_DESC(queue_depth, "Default queue depth for new SCSI devices");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) static bool enable_dif;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) module_param_named(dif, enable_dif, bool, 0400);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) MODULE_PARM_DESC(dif, "Enable DIF data integrity support (default off)");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) bool zfcp_experimental_dix;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) module_param_named(dix, zfcp_experimental_dix, bool, 0400);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) MODULE_PARM_DESC(dix, "Enable experimental DIX (data integrity extension) support which implies DIF support (default off)");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) static bool allow_lun_scan = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) module_param(allow_lun_scan, bool, 0600);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) MODULE_PARM_DESC(allow_lun_scan, "For NPIV, scan and attach all storage LUNs");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) static void zfcp_scsi_slave_destroy(struct scsi_device *sdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) /* if previous slave_alloc returned early, there is nothing to do */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) if (!zfcp_sdev->port)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) zfcp_erp_lun_shutdown_wait(sdev, "scssd_1");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) put_device(&zfcp_sdev->port->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) static int zfcp_scsi_slave_configure(struct scsi_device *sdp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) if (sdp->tagged_supported)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) scsi_change_queue_depth(sdp, default_depth);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) static void zfcp_scsi_command_fail(struct scsi_cmnd *scpnt, int result)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) set_host_byte(scpnt, result);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) zfcp_dbf_scsi_fail_send(scpnt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) scpnt->scsi_done(scpnt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) static
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) int zfcp_scsi_queuecommand(struct Scsi_Host *shost, struct scsi_cmnd *scpnt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(scpnt->device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) struct fc_rport *rport = starget_to_rport(scsi_target(scpnt->device));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) int status, scsi_result, ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) /* reset the status for this request */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) scpnt->result = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) scpnt->host_scribble = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) scsi_result = fc_remote_port_chkready(rport);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) if (unlikely(scsi_result)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) scpnt->result = scsi_result;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) zfcp_dbf_scsi_fail_send(scpnt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) scpnt->scsi_done(scpnt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) status = atomic_read(&zfcp_sdev->status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) if (unlikely(status & ZFCP_STATUS_COMMON_ERP_FAILED) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) !(atomic_read(&zfcp_sdev->port->status) &
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) ZFCP_STATUS_COMMON_ERP_FAILED)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) /* only LUN access denied, but port is good
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) * not covered by FC transport, have to fail here */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) zfcp_scsi_command_fail(scpnt, DID_ERROR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) if (unlikely(!(status & ZFCP_STATUS_COMMON_UNBLOCKED))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) /* This could be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) * call to rport_delete pending: mimic retry from
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) * fc_remote_port_chkready until rport is BLOCKED
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) zfcp_scsi_command_fail(scpnt, DID_IMM_RETRY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) ret = zfcp_fsf_fcp_cmnd(scpnt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) if (unlikely(ret == -EBUSY))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) return SCSI_MLQUEUE_DEVICE_BUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) else if (unlikely(ret < 0))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) return SCSI_MLQUEUE_HOST_BUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) static int zfcp_scsi_slave_alloc(struct scsi_device *sdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) struct zfcp_adapter *adapter =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) (struct zfcp_adapter *) sdev->host->hostdata[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) struct zfcp_port *port;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) struct zfcp_unit *unit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) int npiv = adapter->connection_features & FSF_FEATURE_NPIV_MODE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) zfcp_sdev->erp_action.adapter = adapter;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) zfcp_sdev->erp_action.sdev = sdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) port = zfcp_get_port_by_wwpn(adapter, rport->port_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) if (!port)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) return -ENXIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) zfcp_sdev->erp_action.port = port;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) mutex_lock(&zfcp_sysfs_port_units_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) if (zfcp_sysfs_port_is_removing(port)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) /* port is already gone */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) mutex_unlock(&zfcp_sysfs_port_units_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) put_device(&port->dev); /* undo zfcp_get_port_by_wwpn() */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) return -ENXIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) mutex_unlock(&zfcp_sysfs_port_units_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) unit = zfcp_unit_find(port, zfcp_scsi_dev_lun(sdev));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) if (unit)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) put_device(&unit->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) if (!unit && !(allow_lun_scan && npiv)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) put_device(&port->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) return -ENXIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) zfcp_sdev->port = port;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) zfcp_sdev->latencies.write.channel.min = 0xFFFFFFFF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) zfcp_sdev->latencies.write.fabric.min = 0xFFFFFFFF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) zfcp_sdev->latencies.read.channel.min = 0xFFFFFFFF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) zfcp_sdev->latencies.read.fabric.min = 0xFFFFFFFF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) zfcp_sdev->latencies.cmd.channel.min = 0xFFFFFFFF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) zfcp_sdev->latencies.cmd.fabric.min = 0xFFFFFFFF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) spin_lock_init(&zfcp_sdev->latencies.lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_RUNNING);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) zfcp_erp_lun_reopen(sdev, 0, "scsla_1");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) zfcp_erp_wait(port->adapter);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) static int zfcp_scsi_eh_abort_handler(struct scsi_cmnd *scpnt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) struct Scsi_Host *scsi_host = scpnt->device->host;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) struct zfcp_adapter *adapter =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) (struct zfcp_adapter *) scsi_host->hostdata[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) struct zfcp_fsf_req *old_req, *abrt_req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) unsigned long old_reqid = (unsigned long) scpnt->host_scribble;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) int retval = SUCCESS, ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) int retry = 3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) char *dbf_tag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) /* avoid race condition between late normal completion and abort */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) write_lock_irqsave(&adapter->abort_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) old_req = zfcp_reqlist_find(adapter->req_list, old_reqid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) if (!old_req) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) write_unlock_irqrestore(&adapter->abort_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) zfcp_dbf_scsi_abort("abrt_or", scpnt, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) return FAILED; /* completion could be in progress */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) old_req->data = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) /* don't access old fsf_req after releasing the abort_lock */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) write_unlock_irqrestore(&adapter->abort_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) while (retry--) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) abrt_req = zfcp_fsf_abort_fcp_cmnd(scpnt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) if (abrt_req)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) zfcp_dbf_scsi_abort("abrt_wt", scpnt, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) zfcp_erp_wait(adapter);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) ret = fc_block_scsi_eh(scpnt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) zfcp_dbf_scsi_abort("abrt_bl", scpnt, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) if (!(atomic_read(&adapter->status) &
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) ZFCP_STATUS_COMMON_RUNNING)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) zfcp_dbf_scsi_abort("abrt_ru", scpnt, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) return SUCCESS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) if (!abrt_req) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) zfcp_dbf_scsi_abort("abrt_ar", scpnt, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) return FAILED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) wait_for_completion(&abrt_req->completion);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) if (abrt_req->status & ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) dbf_tag = "abrt_ok";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) else if (abrt_req->status & ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) dbf_tag = "abrt_nn";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) dbf_tag = "abrt_fa";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) retval = FAILED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) zfcp_dbf_scsi_abort(dbf_tag, scpnt, abrt_req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) zfcp_fsf_req_free(abrt_req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) struct zfcp_scsi_req_filter {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) u8 tmf_scope;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) u32 lun_handle;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) u32 port_handle;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) static void zfcp_scsi_forget_cmnd(struct zfcp_fsf_req *old_req, void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) struct zfcp_scsi_req_filter *filter =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) (struct zfcp_scsi_req_filter *)data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) /* already aborted - prevent side-effects - or not a SCSI command */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) if (old_req->data == NULL ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) zfcp_fsf_req_is_status_read_buffer(old_req) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) old_req->qtcb->header.fsf_command != FSF_QTCB_FCP_CMND)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) /* (tmf_scope == FCP_TMF_TGT_RESET || tmf_scope == FCP_TMF_LUN_RESET) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) if (old_req->qtcb->header.port_handle != filter->port_handle)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) if (filter->tmf_scope == FCP_TMF_LUN_RESET &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) old_req->qtcb->header.lun_handle != filter->lun_handle)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) zfcp_dbf_scsi_nullcmnd((struct scsi_cmnd *)old_req->data, old_req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) old_req->data = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) static void zfcp_scsi_forget_cmnds(struct zfcp_scsi_dev *zsdev, u8 tm_flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) struct zfcp_adapter *adapter = zsdev->port->adapter;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) struct zfcp_scsi_req_filter filter = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) .tmf_scope = FCP_TMF_TGT_RESET,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) .port_handle = zsdev->port->handle,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) if (tm_flags == FCP_TMF_LUN_RESET) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) filter.tmf_scope = FCP_TMF_LUN_RESET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) filter.lun_handle = zsdev->lun_handle;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) * abort_lock secures against other processings - in the abort-function
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) * and normal cmnd-handler - of (struct zfcp_fsf_req *)->data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) write_lock_irqsave(&adapter->abort_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) zfcp_reqlist_apply_for_all(adapter->req_list, zfcp_scsi_forget_cmnd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) &filter);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) write_unlock_irqrestore(&adapter->abort_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) * zfcp_scsi_task_mgmt_function() - Send a task management function (sync).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) * @sdev: Pointer to SCSI device to send the task management command to.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) * @tm_flags: Task management flags,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) * here we only handle %FCP_TMF_TGT_RESET or %FCP_TMF_LUN_RESET.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) static int zfcp_scsi_task_mgmt_function(struct scsi_device *sdev, u8 tm_flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) struct zfcp_adapter *adapter = zfcp_sdev->port->adapter;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) struct zfcp_fsf_req *fsf_req = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) int retval = SUCCESS, ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) int retry = 3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) while (retry--) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) fsf_req = zfcp_fsf_fcp_task_mgmt(sdev, tm_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) if (fsf_req)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) zfcp_dbf_scsi_devreset("wait", sdev, tm_flags, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) zfcp_erp_wait(adapter);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) ret = fc_block_rport(rport);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) zfcp_dbf_scsi_devreset("fiof", sdev, tm_flags, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) if (!(atomic_read(&adapter->status) &
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) ZFCP_STATUS_COMMON_RUNNING)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) zfcp_dbf_scsi_devreset("nres", sdev, tm_flags, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) return SUCCESS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) if (!fsf_req) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) zfcp_dbf_scsi_devreset("reqf", sdev, tm_flags, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) return FAILED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) wait_for_completion(&fsf_req->completion);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) if (fsf_req->status & ZFCP_STATUS_FSFREQ_TMFUNCFAILED) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) zfcp_dbf_scsi_devreset("fail", sdev, tm_flags, fsf_req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) retval = FAILED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) zfcp_dbf_scsi_devreset("okay", sdev, tm_flags, fsf_req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) zfcp_scsi_forget_cmnds(zfcp_sdev, tm_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) zfcp_fsf_req_free(fsf_req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) static int zfcp_scsi_eh_device_reset_handler(struct scsi_cmnd *scpnt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) struct scsi_device *sdev = scpnt->device;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) return zfcp_scsi_task_mgmt_function(sdev, FCP_TMF_LUN_RESET);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) static int zfcp_scsi_eh_target_reset_handler(struct scsi_cmnd *scpnt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) struct scsi_target *starget = scsi_target(scpnt->device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) struct fc_rport *rport = starget_to_rport(starget);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) struct Scsi_Host *shost = rport_to_shost(rport);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) struct scsi_device *sdev = NULL, *tmp_sdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) struct zfcp_adapter *adapter =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) (struct zfcp_adapter *)shost->hostdata[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) shost_for_each_device(tmp_sdev, shost) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) if (tmp_sdev->id == starget->id) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) sdev = tmp_sdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) if (!sdev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) ret = FAILED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) zfcp_dbf_scsi_eh("tr_nosd", adapter, starget->id, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) ret = zfcp_scsi_task_mgmt_function(sdev, FCP_TMF_TGT_RESET);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) /* release reference from above shost_for_each_device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) if (sdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) scsi_device_put(tmp_sdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) static int zfcp_scsi_eh_host_reset_handler(struct scsi_cmnd *scpnt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(scpnt->device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) struct zfcp_adapter *adapter = zfcp_sdev->port->adapter;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) int ret = SUCCESS, fc_ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) zfcp_erp_port_forced_reopen_all(adapter, 0, "schrh_p");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) zfcp_erp_wait(adapter);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) zfcp_erp_adapter_reopen(adapter, 0, "schrh_1");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) zfcp_erp_wait(adapter);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) fc_ret = fc_block_scsi_eh(scpnt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) if (fc_ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) ret = fc_ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) zfcp_dbf_scsi_eh("schrh_r", adapter, ~0, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) * zfcp_scsi_sysfs_host_reset() - Support scsi_host sysfs attribute host_reset.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) * @shost: Pointer to Scsi_Host to perform action on.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) * @reset_type: We support %SCSI_ADAPTER_RESET but not %SCSI_FIRMWARE_RESET.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) * Return: 0 on %SCSI_ADAPTER_RESET, -%EOPNOTSUPP otherwise.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) * This is similar to zfcp_sysfs_adapter_failed_store().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) static int zfcp_scsi_sysfs_host_reset(struct Scsi_Host *shost, int reset_type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) struct zfcp_adapter *adapter =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) (struct zfcp_adapter *)shost->hostdata[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) if (reset_type != SCSI_ADAPTER_RESET) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) ret = -EOPNOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) zfcp_dbf_scsi_eh("scshr_n", adapter, ~0, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) zfcp_erp_adapter_reset_sync(adapter, "scshr_y");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) struct scsi_transport_template *zfcp_scsi_transport_template;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) static struct scsi_host_template zfcp_scsi_host_template = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) .module = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) .name = "zfcp",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) .queuecommand = zfcp_scsi_queuecommand,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) .eh_timed_out = fc_eh_timed_out,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) .eh_abort_handler = zfcp_scsi_eh_abort_handler,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) .eh_device_reset_handler = zfcp_scsi_eh_device_reset_handler,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) .eh_target_reset_handler = zfcp_scsi_eh_target_reset_handler,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) .eh_host_reset_handler = zfcp_scsi_eh_host_reset_handler,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) .slave_alloc = zfcp_scsi_slave_alloc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) .slave_configure = zfcp_scsi_slave_configure,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) .slave_destroy = zfcp_scsi_slave_destroy,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) .change_queue_depth = scsi_change_queue_depth,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) .host_reset = zfcp_scsi_sysfs_host_reset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) .proc_name = "zfcp",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) .can_queue = 4096,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) .this_id = -1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) .sg_tablesize = (((QDIO_MAX_ELEMENTS_PER_BUFFER - 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) * ZFCP_QDIO_MAX_SBALS_PER_REQ) - 2),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) /* GCD, adjusted later */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) .max_sectors = (((QDIO_MAX_ELEMENTS_PER_BUFFER - 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) * ZFCP_QDIO_MAX_SBALS_PER_REQ) - 2) * 8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) /* GCD, adjusted later */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) /* report size limit per scatter-gather segment */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) .max_segment_size = ZFCP_QDIO_SBALE_LEN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) .dma_boundary = ZFCP_QDIO_SBALE_LEN - 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) .shost_attrs = zfcp_sysfs_shost_attrs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) .sdev_attrs = zfcp_sysfs_sdev_attrs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) .track_queue_depth = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) .supported_mode = MODE_INITIATOR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) * zfcp_scsi_adapter_register() - Allocate and register SCSI and FC host with
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) * SCSI midlayer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) * @adapter: The zfcp adapter to register with the SCSI midlayer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) * Allocates the SCSI host object for the given adapter, sets basic properties
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) * (such as the transport template, QDIO limits, ...), and registers it with
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) * the midlayer.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) * During registration with the midlayer the corresponding FC host object for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) * the referenced transport class is also implicitely allocated.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) * Upon success adapter->scsi_host is set, and upon failure it remains NULL. If
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) * adapter->scsi_host is already set, nothing is done.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) * Return:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) * * 0 - Allocation and registration was successful
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) * * -EEXIST - SCSI and FC host did already exist, nothing was done, nothing
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) * was changed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) * * -EIO - Allocation or registration failed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) int zfcp_scsi_adapter_register(struct zfcp_adapter *adapter)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) struct ccw_dev_id dev_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) if (adapter->scsi_host)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) return -EEXIST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) ccw_device_get_id(adapter->ccw_device, &dev_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) /* register adapter as SCSI host with mid layer of SCSI stack */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) adapter->scsi_host = scsi_host_alloc(&zfcp_scsi_host_template,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) sizeof (struct zfcp_adapter *));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) if (!adapter->scsi_host)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) goto err_out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) /* tell the SCSI stack some characteristics of this adapter */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) adapter->scsi_host->max_id = 511;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) adapter->scsi_host->max_lun = 0xFFFFFFFF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) adapter->scsi_host->max_channel = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) adapter->scsi_host->unique_id = dev_id.devno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) adapter->scsi_host->max_cmd_len = 16; /* in struct fcp_cmnd */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) adapter->scsi_host->transportt = zfcp_scsi_transport_template;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) /* make all basic properties known at registration time */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) zfcp_qdio_shost_update(adapter, adapter->qdio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) zfcp_scsi_set_prot(adapter);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) adapter->scsi_host->hostdata[0] = (unsigned long) adapter;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) if (scsi_add_host(adapter->scsi_host, &adapter->ccw_device->dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) scsi_host_put(adapter->scsi_host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) goto err_out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) err_out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) adapter->scsi_host = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) dev_err(&adapter->ccw_device->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) "Registering the FCP device with the SCSI stack failed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) * zfcp_scsi_adapter_unregister - Unregister SCSI and FC host from SCSI midlayer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) * @adapter: The zfcp adapter to unregister.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) void zfcp_scsi_adapter_unregister(struct zfcp_adapter *adapter)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) struct Scsi_Host *shost;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) struct zfcp_port *port;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) shost = adapter->scsi_host;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) if (!shost)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) read_lock_irq(&adapter->port_list_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) list_for_each_entry(port, &adapter->port_list, list)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) port->rport = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) read_unlock_irq(&adapter->port_list_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) fc_remove_host(shost);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) scsi_remove_host(shost);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) scsi_host_put(shost);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) adapter->scsi_host = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) static struct fc_host_statistics*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) zfcp_scsi_init_fc_host_stats(struct zfcp_adapter *adapter)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) struct fc_host_statistics *fc_stats;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) if (!adapter->fc_stats) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) fc_stats = kmalloc(sizeof(*fc_stats), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) if (!fc_stats)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) adapter->fc_stats = fc_stats; /* freed in adapter_release */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) memset(adapter->fc_stats, 0, sizeof(*adapter->fc_stats));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) return adapter->fc_stats;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) static void zfcp_scsi_adjust_fc_host_stats(struct fc_host_statistics *fc_stats,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) struct fsf_qtcb_bottom_port *data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) struct fsf_qtcb_bottom_port *old)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) fc_stats->seconds_since_last_reset =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) data->seconds_since_last_reset - old->seconds_since_last_reset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) fc_stats->tx_frames = data->tx_frames - old->tx_frames;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) fc_stats->tx_words = data->tx_words - old->tx_words;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) fc_stats->rx_frames = data->rx_frames - old->rx_frames;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) fc_stats->rx_words = data->rx_words - old->rx_words;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) fc_stats->lip_count = data->lip - old->lip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) fc_stats->nos_count = data->nos - old->nos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) fc_stats->error_frames = data->error_frames - old->error_frames;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) fc_stats->dumped_frames = data->dumped_frames - old->dumped_frames;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) fc_stats->link_failure_count = data->link_failure - old->link_failure;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) fc_stats->loss_of_sync_count = data->loss_of_sync - old->loss_of_sync;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) fc_stats->loss_of_signal_count =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) data->loss_of_signal - old->loss_of_signal;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) fc_stats->prim_seq_protocol_err_count =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) data->psp_error_counts - old->psp_error_counts;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) fc_stats->invalid_tx_word_count =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) data->invalid_tx_words - old->invalid_tx_words;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) fc_stats->invalid_crc_count = data->invalid_crcs - old->invalid_crcs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) fc_stats->fcp_input_requests =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) data->input_requests - old->input_requests;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) fc_stats->fcp_output_requests =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) data->output_requests - old->output_requests;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) fc_stats->fcp_control_requests =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) data->control_requests - old->control_requests;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) fc_stats->fcp_input_megabytes = data->input_mb - old->input_mb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) fc_stats->fcp_output_megabytes = data->output_mb - old->output_mb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) static void zfcp_scsi_set_fc_host_stats(struct fc_host_statistics *fc_stats,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) struct fsf_qtcb_bottom_port *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) fc_stats->seconds_since_last_reset = data->seconds_since_last_reset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) fc_stats->tx_frames = data->tx_frames;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) fc_stats->tx_words = data->tx_words;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) fc_stats->rx_frames = data->rx_frames;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) fc_stats->rx_words = data->rx_words;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) fc_stats->lip_count = data->lip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) fc_stats->nos_count = data->nos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) fc_stats->error_frames = data->error_frames;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) fc_stats->dumped_frames = data->dumped_frames;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) fc_stats->link_failure_count = data->link_failure;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) fc_stats->loss_of_sync_count = data->loss_of_sync;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) fc_stats->loss_of_signal_count = data->loss_of_signal;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) fc_stats->prim_seq_protocol_err_count = data->psp_error_counts;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) fc_stats->invalid_tx_word_count = data->invalid_tx_words;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) fc_stats->invalid_crc_count = data->invalid_crcs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) fc_stats->fcp_input_requests = data->input_requests;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) fc_stats->fcp_output_requests = data->output_requests;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) fc_stats->fcp_control_requests = data->control_requests;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) fc_stats->fcp_input_megabytes = data->input_mb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) fc_stats->fcp_output_megabytes = data->output_mb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) static struct fc_host_statistics *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) zfcp_scsi_get_fc_host_stats(struct Scsi_Host *host)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) struct zfcp_adapter *adapter;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) struct fc_host_statistics *fc_stats;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) struct fsf_qtcb_bottom_port *data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) adapter = (struct zfcp_adapter *)host->hostdata[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) fc_stats = zfcp_scsi_init_fc_host_stats(adapter);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) if (!fc_stats)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) data = kzalloc(sizeof(*data), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) if (!data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) ret = zfcp_fsf_exchange_port_data_sync(adapter->qdio, data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) if (ret != 0 && ret != -EAGAIN) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) kfree(data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) if (adapter->stats_reset &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) ((jiffies/HZ - adapter->stats_reset) <
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) data->seconds_since_last_reset))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) zfcp_scsi_adjust_fc_host_stats(fc_stats, data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) adapter->stats_reset_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) zfcp_scsi_set_fc_host_stats(fc_stats, data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) kfree(data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) return fc_stats;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) static void zfcp_scsi_reset_fc_host_stats(struct Scsi_Host *shost)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) struct zfcp_adapter *adapter;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) struct fsf_qtcb_bottom_port *data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) adapter = (struct zfcp_adapter *)shost->hostdata[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) data = kzalloc(sizeof(*data), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) if (!data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) ret = zfcp_fsf_exchange_port_data_sync(adapter->qdio, data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) if (ret != 0 && ret != -EAGAIN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) kfree(data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) adapter->stats_reset = jiffies/HZ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) kfree(adapter->stats_reset_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) adapter->stats_reset_data = data; /* finally freed in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) adapter_release */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) static void zfcp_scsi_get_host_port_state(struct Scsi_Host *shost)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) struct zfcp_adapter *adapter =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) (struct zfcp_adapter *)shost->hostdata[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) int status = atomic_read(&adapter->status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) if ((status & ZFCP_STATUS_COMMON_RUNNING) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) !(status & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) fc_host_port_state(shost) = FC_PORTSTATE_ONLINE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) else if (status & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) fc_host_port_state(shost) = FC_PORTSTATE_LINKDOWN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) else if (status & ZFCP_STATUS_COMMON_ERP_FAILED)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) fc_host_port_state(shost) = FC_PORTSTATE_ERROR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) fc_host_port_state(shost) = FC_PORTSTATE_UNKNOWN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) static void zfcp_scsi_set_rport_dev_loss_tmo(struct fc_rport *rport,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) u32 timeout)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) rport->dev_loss_tmo = timeout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) * zfcp_scsi_terminate_rport_io - Terminate all I/O on a rport
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) * @rport: The FC rport where to teminate I/O
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) * Abort all pending SCSI commands for a port by closing the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) * port. Using a reopen avoids a conflict with a shutdown
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) * overwriting a reopen. The "forced" ensures that a disappeared port
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) * is not opened again as valid due to the cached plogi data in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) * non-NPIV mode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) static void zfcp_scsi_terminate_rport_io(struct fc_rport *rport)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) struct zfcp_port *port;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) struct Scsi_Host *shost = rport_to_shost(rport);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) struct zfcp_adapter *adapter =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) (struct zfcp_adapter *)shost->hostdata[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) port = zfcp_get_port_by_wwpn(adapter, rport->port_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) if (port) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) zfcp_erp_port_forced_reopen(port, 0, "sctrpi1");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) put_device(&port->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) zfcp_erp_port_forced_no_port_dbf(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) "sctrpin", adapter,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) rport->port_name /* zfcp_scsi_rport_register */,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) rport->port_id /* zfcp_scsi_rport_register */);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) static void zfcp_scsi_rport_register(struct zfcp_port *port)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) struct fc_rport_identifiers ids;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) struct fc_rport *rport;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) if (port->rport)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) ids.node_name = port->wwnn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) ids.port_name = port->wwpn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) ids.port_id = port->d_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) ids.roles = FC_RPORT_ROLE_FCP_TARGET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) zfcp_dbf_rec_trig_lock("scpaddy", port->adapter, port, NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) ZFCP_PSEUDO_ERP_ACTION_RPORT_ADD,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) ZFCP_PSEUDO_ERP_ACTION_RPORT_ADD);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) rport = fc_remote_port_add(port->adapter->scsi_host, 0, &ids);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) if (!rport) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) dev_err(&port->adapter->ccw_device->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) "Registering port 0x%016Lx failed\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) (unsigned long long)port->wwpn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) rport->maxframe_size = port->maxframe_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747) rport->supported_classes = port->supported_classes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748) port->rport = rport;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) port->starget_id = rport->scsi_target_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751) zfcp_unit_queue_scsi_scan(port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) static void zfcp_scsi_rport_block(struct zfcp_port *port)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) struct fc_rport *rport = port->rport;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758) if (rport) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) zfcp_dbf_rec_trig_lock("scpdely", port->adapter, port, NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) ZFCP_PSEUDO_ERP_ACTION_RPORT_DEL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) ZFCP_PSEUDO_ERP_ACTION_RPORT_DEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) fc_remote_port_delete(rport);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763) port->rport = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) void zfcp_scsi_schedule_rport_register(struct zfcp_port *port)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) get_device(&port->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770) port->rport_task = RPORT_ADD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772) if (!queue_work(port->adapter->work_queue, &port->rport_work))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) put_device(&port->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776) void zfcp_scsi_schedule_rport_block(struct zfcp_port *port)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778) get_device(&port->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779) port->rport_task = RPORT_DEL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781) if (port->rport && queue_work(port->adapter->work_queue,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782) &port->rport_work))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785) put_device(&port->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788) void zfcp_scsi_schedule_rports_block(struct zfcp_adapter *adapter)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) struct zfcp_port *port;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) read_lock_irqsave(&adapter->port_list_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794) list_for_each_entry(port, &adapter->port_list, list)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795) zfcp_scsi_schedule_rport_block(port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796) read_unlock_irqrestore(&adapter->port_list_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799) void zfcp_scsi_rport_work(struct work_struct *work)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801) struct zfcp_port *port = container_of(work, struct zfcp_port,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802) rport_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804) set_worker_desc("zrp%c-%16llx",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805) (port->rport_task == RPORT_ADD) ? 'a' : 'd',
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806) port->wwpn); /* < WORKER_DESC_LEN=24 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807) while (port->rport_task) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808) if (port->rport_task == RPORT_ADD) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809) port->rport_task = RPORT_NONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810) zfcp_scsi_rport_register(port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812) port->rport_task = RPORT_NONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813) zfcp_scsi_rport_block(port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817) put_device(&port->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821) * zfcp_scsi_set_prot - Configure DIF/DIX support in scsi_host
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822) * @adapter: The adapter where to configure DIF/DIX for the SCSI host
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824) void zfcp_scsi_set_prot(struct zfcp_adapter *adapter)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826) unsigned int mask = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827) unsigned int data_div;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828) struct Scsi_Host *shost = adapter->scsi_host;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830) data_div = atomic_read(&adapter->status) &
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831) ZFCP_STATUS_ADAPTER_DATA_DIV_ENABLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833) if ((enable_dif || zfcp_experimental_dix) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834) adapter->adapter_features & FSF_FEATURE_DIF_PROT_TYPE1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835) mask |= SHOST_DIF_TYPE1_PROTECTION;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837) if (zfcp_experimental_dix && data_div &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838) adapter->adapter_features & FSF_FEATURE_DIX_PROT_TCPIP) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839) mask |= SHOST_DIX_TYPE1_PROTECTION;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840) scsi_host_set_guard(shost, SHOST_DIX_GUARD_IP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841) shost->sg_prot_tablesize = adapter->qdio->max_sbale_per_req / 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842) shost->sg_tablesize = adapter->qdio->max_sbale_per_req / 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843) shost->max_sectors = shost->sg_tablesize * 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846) scsi_host_set_prot(shost, mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850) * zfcp_scsi_dif_sense_error - Report DIF/DIX error as driver sense error
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851) * @scmd: The SCSI command to report the error for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852) * @ascq: The ASCQ to put in the sense buffer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854) * See the error handling in sd_done for the sense codes used here.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855) * Set DID_SOFT_ERROR to retry the request, if possible.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857) void zfcp_scsi_dif_sense_error(struct scsi_cmnd *scmd, int ascq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859) scsi_build_sense_buffer(1, scmd->sense_buffer,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860) ILLEGAL_REQUEST, 0x10, ascq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861) set_driver_byte(scmd, DRIVER_SENSE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862) scmd->result |= SAM_STAT_CHECK_CONDITION;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863) set_host_byte(scmd, DID_SOFT_ERROR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866) void zfcp_scsi_shost_update_config_data(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867) struct zfcp_adapter *const adapter,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868) const struct fsf_qtcb_bottom_config *const bottom,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869) const bool bottom_incomplete)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871) struct Scsi_Host *const shost = adapter->scsi_host;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872) const struct fc_els_flogi *nsp, *plogi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874) if (shost == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877) snprintf(fc_host_firmware_version(shost), FC_VERSION_STRING_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878) "0x%08x", bottom->lic_version);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880) if (adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881) snprintf(fc_host_hardware_version(shost),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882) FC_VERSION_STRING_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883) "0x%08x", bottom->hardware_version);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884) memcpy(fc_host_serial_number(shost), bottom->serial_number,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885) min(FC_SERIAL_NUMBER_SIZE, 17));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886) EBCASC(fc_host_serial_number(shost),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887) min(FC_SERIAL_NUMBER_SIZE, 17));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890) /* adjust pointers for missing command code */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891) nsp = (struct fc_els_flogi *) ((u8 *)&bottom->nport_serv_param
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892) - sizeof(u32));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893) plogi = (struct fc_els_flogi *) ((u8 *)&bottom->plogi_payload
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 894) - sizeof(u32));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 895)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 896) snprintf(fc_host_manufacturer(shost), FC_SERIAL_NUMBER_SIZE, "%s",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 897) "IBM");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 898) fc_host_port_name(shost) = be64_to_cpu(nsp->fl_wwpn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 899) fc_host_node_name(shost) = be64_to_cpu(nsp->fl_wwnn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 900) fc_host_supported_classes(shost) = FC_COS_CLASS2 | FC_COS_CLASS3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 901)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 902) zfcp_scsi_set_prot(adapter);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 903)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 904) /* do not evaluate invalid fields */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 905) if (bottom_incomplete)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 906) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 907)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 908) fc_host_port_id(shost) = ntoh24(bottom->s_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 909) fc_host_speed(shost) =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 910) zfcp_fsf_convert_portspeed(bottom->fc_link_speed);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 911)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 912) snprintf(fc_host_model(shost), FC_SYMBOLIC_NAME_SIZE, "0x%04x",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 913) bottom->adapter_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 914)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 915) switch (bottom->fc_topology) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 916) case FSF_TOPO_P2P:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 917) fc_host_port_type(shost) = FC_PORTTYPE_PTP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 918) fc_host_fabric_name(shost) = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 919) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 920) case FSF_TOPO_FABRIC:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 921) fc_host_fabric_name(shost) = be64_to_cpu(plogi->fl_wwnn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 922) if (bottom->connection_features & FSF_FEATURE_NPIV_MODE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 923) fc_host_port_type(shost) = FC_PORTTYPE_NPIV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 924) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 925) fc_host_port_type(shost) = FC_PORTTYPE_NPORT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 926) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 927) case FSF_TOPO_AL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 928) fc_host_port_type(shost) = FC_PORTTYPE_NLPORT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 929) fallthrough;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 930) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 931) fc_host_fabric_name(shost) = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 932) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 933) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 934) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 935)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 936) void zfcp_scsi_shost_update_port_data(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 937) struct zfcp_adapter *const adapter,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 938) const struct fsf_qtcb_bottom_port *const bottom)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 939) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 940) struct Scsi_Host *const shost = adapter->scsi_host;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 941)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 942) if (shost == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 943) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 944)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 945) fc_host_permanent_port_name(shost) = bottom->wwpn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 946) fc_host_maxframe_size(shost) = bottom->maximum_frame_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 947) fc_host_supported_speeds(shost) =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 948) zfcp_fsf_convert_portspeed(bottom->supported_speed);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 949) memcpy(fc_host_supported_fc4s(shost), bottom->supported_fc4_types,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 950) FC_FC4_LIST_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 951) memcpy(fc_host_active_fc4s(shost), bottom->active_fc4_types,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 952) FC_FC4_LIST_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 953) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 954)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 955) struct fc_function_template zfcp_transport_functions = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 956) .show_starget_port_id = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 957) .show_starget_port_name = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 958) .show_starget_node_name = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 959) .show_rport_supported_classes = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 960) .show_rport_maxframe_size = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 961) .show_rport_dev_loss_tmo = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 962) .show_host_node_name = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 963) .show_host_port_name = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 964) .show_host_permanent_port_name = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 965) .show_host_supported_classes = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 966) .show_host_supported_fc4s = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 967) .show_host_supported_speeds = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 968) .show_host_maxframe_size = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 969) .show_host_serial_number = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 970) .show_host_manufacturer = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 971) .show_host_model = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 972) .show_host_hardware_version = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 973) .show_host_firmware_version = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 974) .get_fc_host_stats = zfcp_scsi_get_fc_host_stats,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 975) .reset_fc_host_stats = zfcp_scsi_reset_fc_host_stats,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 976) .set_rport_dev_loss_tmo = zfcp_scsi_set_rport_dev_loss_tmo,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 977) .get_host_port_state = zfcp_scsi_get_host_port_state,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 978) .terminate_rport_io = zfcp_scsi_terminate_rport_io,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 979) .show_host_port_state = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 980) .show_host_active_fc4s = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 981) .bsg_request = zfcp_fc_exec_bsg_job,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 982) .bsg_timeout = zfcp_fc_timeout_bsg_job,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 983) /* no functions registered for following dynamic attributes but
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 984) directly set by LLDD */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 985) .show_host_port_type = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 986) .show_host_symbolic_name = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 987) .show_host_speed = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 988) .show_host_port_id = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 989) .show_host_fabric_name = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 990) .dd_bsg_size = sizeof(struct zfcp_fsf_ct_els),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 991) };
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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