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 34 #define sas_printk(fmt, ...) printk(KERN_NOTICE "sas: " fmt, ## __VA_ARGS__) 35 36 #define SAS_DPRINTK(fmt, ...) printk(KERN_DEBUG "sas: " fmt, ## __VA_ARGS__) 37 38 #define TO_SAS_TASK(_scsi_cmd) ((void *)(_scsi_cmd)->host_scribble) 39 #define ASSIGN_SAS_TASK(_sc, _t) do { (_sc)->host_scribble = (void *) _t; } while (0) 40 41 void sas_scsi_recover_host(struct Scsi_Host *shost); 42 43 int sas_show_class(enum sas_class class, char *buf); 44 int sas_show_proto(enum sas_protocol proto, char *buf); 45 int sas_show_linkrate(enum sas_linkrate linkrate, char *buf); 46 int sas_show_oob_mode(enum sas_oob_mode oob_mode, char *buf); 47 48 int sas_register_phys(struct sas_ha_struct *sas_ha); 49 void sas_unregister_phys(struct sas_ha_struct *sas_ha); 50 51 int sas_register_ports(struct sas_ha_struct *sas_ha); 52 void sas_unregister_ports(struct sas_ha_struct *sas_ha); 53 54 enum blk_eh_timer_return sas_scsi_timed_out(struct scsi_cmnd *); 55 56 int sas_init_queue(struct sas_ha_struct *sas_ha); 57 int sas_init_events(struct sas_ha_struct *sas_ha); 58 void sas_shutdown_queue(struct sas_ha_struct *sas_ha); 59 60 void sas_deform_port(struct asd_sas_phy *phy, int gone); 61 62 void sas_porte_bytes_dmaed(struct work_struct *work); 63 void sas_porte_broadcast_rcvd(struct work_struct *work); 64 void sas_porte_link_reset_err(struct work_struct *work); 65 void sas_porte_timer_event(struct work_struct *work); 66 void sas_porte_hard_reset(struct work_struct *work); 67 68 int sas_notify_lldd_dev_found(struct domain_device *); 69 void sas_notify_lldd_dev_gone(struct domain_device *); 70 71 int sas_smp_phy_control(struct domain_device *dev, int phy_id, 72 enum phy_func phy_func, struct sas_phy_linkrates *); 73 int sas_smp_get_phy_events(struct sas_phy *phy); 74 75 struct domain_device *sas_find_dev_by_rphy(struct sas_rphy *rphy); 76 77 void sas_hae_reset(struct work_struct *work); 78 79 #ifdef CONFIG_SCSI_SAS_HOST_SMP 80 extern int sas_smp_host_handler(struct Scsi_Host *shost, struct request *req, 81 struct request *rsp); 82 #else 83 static inline int sas_smp_host_handler(struct Scsi_Host *shost, 84 struct request *req, 85 struct request *rsp) 86 { 87 shost_printk(KERN_ERR, shost, 88 "Cannot send SMP to a sas host (not enabled in CONFIG)\n"); 89 return -EINVAL; 90 } 91 #endif 92 93 static inline void sas_queue_event(int event, spinlock_t *lock, 94 unsigned long *pending, 95 struct work_struct *work, 96 struct sas_ha_struct *sas_ha) 97 { 98 unsigned long flags; 99 100 spin_lock_irqsave(lock, flags); 101 if (test_bit(event, pending)) { 102 spin_unlock_irqrestore(lock, flags); 103 return; 104 } 105 __set_bit(event, pending); 106 spin_unlock_irqrestore(lock, flags); 107 108 spin_lock_irqsave(&sas_ha->state_lock, flags); 109 if (sas_ha->state != SAS_HA_UNREGISTERED) { 110 scsi_queue_work(sas_ha->core.shost, work); 111 } 112 spin_unlock_irqrestore(&sas_ha->state_lock, flags); 113 } 114 115 static inline void sas_begin_event(int event, spinlock_t *lock, 116 unsigned long *pending) 117 { 118 unsigned long flags; 119 120 spin_lock_irqsave(lock, flags); 121 __clear_bit(event, pending); 122 spin_unlock_irqrestore(lock, flags); 123 } 124 125 static inline void sas_fill_in_rphy(struct domain_device *dev, 126 struct sas_rphy *rphy) 127 { 128 rphy->identify.sas_address = SAS_ADDR(dev->sas_addr); 129 rphy->identify.initiator_port_protocols = dev->iproto; 130 rphy->identify.target_port_protocols = dev->tproto; 131 switch (dev->dev_type) { 132 case SATA_DEV: 133 /* FIXME: need sata device type */ 134 case SAS_END_DEV: 135 rphy->identify.device_type = SAS_END_DEVICE; 136 break; 137 case EDGE_DEV: 138 rphy->identify.device_type = SAS_EDGE_EXPANDER_DEVICE; 139 break; 140 case FANOUT_DEV: 141 rphy->identify.device_type = SAS_FANOUT_EXPANDER_DEVICE; 142 break; 143 default: 144 rphy->identify.device_type = SAS_PHY_UNUSED; 145 break; 146 } 147 } 148 149 static inline void sas_add_parent_port(struct domain_device *dev, int phy_id) 150 { 151 struct expander_device *ex = &dev->ex_dev; 152 struct ex_phy *ex_phy = &ex->ex_phy[phy_id]; 153 154 if (!ex->parent_port) { 155 ex->parent_port = sas_port_alloc(&dev->rphy->dev, phy_id); 156 /* FIXME: error handling */ 157 BUG_ON(!ex->parent_port); 158 BUG_ON(sas_port_add(ex->parent_port)); 159 sas_port_mark_backlink(ex->parent_port); 160 } 161 sas_port_add_phy(ex->parent_port, ex_phy->phy); 162 } 163 164 #endif /* _SAS_INTERNAL_H_ */ 165