1 /* 2 * Serial Attached SCSI (SAS) class internal header file 3 * 4 * Copyright (C) 2005 Adaptec, Inc. All rights reserved. 5 * Copyright (C) 2005 Luben Tuikov <luben_tuikov@adaptec.com> 6 * 7 * This file is licensed under GPLv2. 8 * 9 * This program is free software; you can redistribute it and/or 10 * modify it under the terms of the GNU General Public License as 11 * published by the Free Software Foundation; either version 2 of the 12 * License, or (at your option) any later version. 13 * 14 * This program is distributed in the hope that it will be useful, but 15 * WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 17 * General Public License for more details. 18 * 19 * You should have received a copy of the GNU General Public License 20 * along with this program; if not, write to the Free Software 21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 22 * USA 23 * 24 */ 25 26 #ifndef _SAS_INTERNAL_H_ 27 #define _SAS_INTERNAL_H_ 28 29 #include <scsi/scsi.h> 30 #include <scsi/scsi_host.h> 31 #include <scsi/scsi_transport_sas.h> 32 #include <scsi/libsas.h> 33 #include <scsi/sas_ata.h> 34 35 #define sas_printk(fmt, ...) printk(KERN_NOTICE "sas: " fmt, ## __VA_ARGS__) 36 37 #define SAS_DPRINTK(fmt, ...) printk(KERN_DEBUG "sas: " fmt, ## __VA_ARGS__) 38 39 #define TO_SAS_TASK(_scsi_cmd) ((void *)(_scsi_cmd)->host_scribble) 40 #define ASSIGN_SAS_TASK(_sc, _t) do { (_sc)->host_scribble = (void *) _t; } while (0) 41 42 struct sas_phy_data { 43 /* let reset be performed in sas_queue_work() context */ 44 struct sas_phy *phy; 45 struct mutex event_lock; 46 int hard_reset; 47 int reset_result; 48 struct sas_work reset_work; 49 int enable; 50 int enable_result; 51 struct sas_work enable_work; 52 }; 53 54 void sas_scsi_recover_host(struct Scsi_Host *shost); 55 56 int sas_show_class(enum sas_class class, char *buf); 57 int sas_show_proto(enum sas_protocol proto, char *buf); 58 int sas_show_linkrate(enum sas_linkrate linkrate, char *buf); 59 int sas_show_oob_mode(enum sas_oob_mode oob_mode, char *buf); 60 61 int sas_register_phys(struct sas_ha_struct *sas_ha); 62 void sas_unregister_phys(struct sas_ha_struct *sas_ha); 63 64 int sas_register_ports(struct sas_ha_struct *sas_ha); 65 void sas_unregister_ports(struct sas_ha_struct *sas_ha); 66 67 int sas_init_events(struct sas_ha_struct *sas_ha); 68 void sas_disable_revalidation(struct sas_ha_struct *ha); 69 void sas_enable_revalidation(struct sas_ha_struct *ha); 70 void __sas_drain_work(struct sas_ha_struct *ha); 71 72 void sas_deform_port(struct asd_sas_phy *phy, int gone); 73 74 void sas_porte_bytes_dmaed(struct work_struct *work); 75 void sas_porte_broadcast_rcvd(struct work_struct *work); 76 void sas_porte_link_reset_err(struct work_struct *work); 77 void sas_porte_timer_event(struct work_struct *work); 78 void sas_porte_hard_reset(struct work_struct *work); 79 int sas_queue_work(struct sas_ha_struct *ha, struct sas_work *sw); 80 81 int sas_notify_lldd_dev_found(struct domain_device *); 82 void sas_notify_lldd_dev_gone(struct domain_device *); 83 84 void sas_smp_handler(struct bsg_job *job, struct Scsi_Host *shost, 85 struct sas_rphy *rphy); 86 int sas_smp_phy_control(struct domain_device *dev, int phy_id, 87 enum phy_func phy_func, struct sas_phy_linkrates *); 88 int sas_smp_get_phy_events(struct sas_phy *phy); 89 90 int sas_notify_phy_event(struct asd_sas_phy *phy, enum phy_event event); 91 void sas_device_set_phy(struct domain_device *dev, struct sas_port *port); 92 struct domain_device *sas_find_dev_by_rphy(struct sas_rphy *rphy); 93 struct domain_device *sas_ex_to_ata(struct domain_device *ex_dev, int phy_id); 94 int sas_ex_phy_discover(struct domain_device *dev, int single); 95 int sas_get_report_phy_sata(struct domain_device *dev, int phy_id, 96 struct smp_resp *rps_resp); 97 int sas_try_ata_reset(struct asd_sas_phy *phy); 98 void sas_hae_reset(struct work_struct *work); 99 100 void sas_free_device(struct kref *kref); 101 102 #ifdef CONFIG_SCSI_SAS_HOST_SMP 103 extern void sas_smp_host_handler(struct bsg_job *job, struct Scsi_Host *shost); 104 #else 105 static inline void sas_smp_host_handler(struct bsg_job *job, 106 struct Scsi_Host *shost) 107 { 108 shost_printk(KERN_ERR, shost, 109 "Cannot send SMP to a sas host (not enabled in CONFIG)\n"); 110 bsg_job_done(job, -EINVAL, 0); 111 } 112 #endif 113 114 static inline void sas_fail_probe(struct domain_device *dev, const char *func, int err) 115 { 116 SAS_DPRINTK("%s: for %s device %16llx returned %d\n", 117 func, dev->parent ? "exp-attached" : 118 "direct-attached", 119 SAS_ADDR(dev->sas_addr), err); 120 sas_unregister_dev(dev->port, dev); 121 } 122 123 static inline void sas_fill_in_rphy(struct domain_device *dev, 124 struct sas_rphy *rphy) 125 { 126 rphy->identify.sas_address = SAS_ADDR(dev->sas_addr); 127 rphy->identify.initiator_port_protocols = dev->iproto; 128 rphy->identify.target_port_protocols = dev->tproto; 129 switch (dev->dev_type) { 130 case SAS_SATA_DEV: 131 /* FIXME: need sata device type */ 132 case SAS_END_DEVICE: 133 case SAS_SATA_PENDING: 134 rphy->identify.device_type = SAS_END_DEVICE; 135 break; 136 case SAS_EDGE_EXPANDER_DEVICE: 137 rphy->identify.device_type = SAS_EDGE_EXPANDER_DEVICE; 138 break; 139 case SAS_FANOUT_EXPANDER_DEVICE: 140 rphy->identify.device_type = SAS_FANOUT_EXPANDER_DEVICE; 141 break; 142 default: 143 rphy->identify.device_type = SAS_PHY_UNUSED; 144 break; 145 } 146 } 147 148 static inline void sas_phy_set_target(struct asd_sas_phy *p, struct domain_device *dev) 149 { 150 struct sas_phy *phy = p->phy; 151 152 if (dev) { 153 if (dev_is_sata(dev)) 154 phy->identify.device_type = SAS_END_DEVICE; 155 else 156 phy->identify.device_type = dev->dev_type; 157 phy->identify.target_port_protocols = dev->tproto; 158 } else { 159 phy->identify.device_type = SAS_PHY_UNUSED; 160 phy->identify.target_port_protocols = 0; 161 } 162 } 163 164 static inline void sas_add_parent_port(struct domain_device *dev, int phy_id) 165 { 166 struct expander_device *ex = &dev->ex_dev; 167 struct ex_phy *ex_phy = &ex->ex_phy[phy_id]; 168 169 if (!ex->parent_port) { 170 ex->parent_port = sas_port_alloc(&dev->rphy->dev, phy_id); 171 /* FIXME: error handling */ 172 BUG_ON(!ex->parent_port); 173 BUG_ON(sas_port_add(ex->parent_port)); 174 sas_port_mark_backlink(ex->parent_port); 175 } 176 sas_port_add_phy(ex->parent_port, ex_phy->phy); 177 } 178 179 static inline struct domain_device *sas_alloc_device(void) 180 { 181 struct domain_device *dev = kzalloc(sizeof(*dev), GFP_KERNEL); 182 183 if (dev) { 184 INIT_LIST_HEAD(&dev->siblings); 185 INIT_LIST_HEAD(&dev->dev_list_node); 186 INIT_LIST_HEAD(&dev->disco_list_node); 187 kref_init(&dev->kref); 188 spin_lock_init(&dev->done_lock); 189 } 190 return dev; 191 } 192 193 static inline void sas_put_device(struct domain_device *dev) 194 { 195 kref_put(&dev->kref, sas_free_device); 196 } 197 198 #endif /* _SAS_INTERNAL_H_ */ 199