Linus Torvalds | ba6d10a | 2019-07-11 15:14:01 -0700 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 2 | /* |
| 3 | * SAS host prototypes and structures header file |
| 4 | * |
| 5 | * Copyright (C) 2005 Adaptec, Inc. All rights reserved. |
| 6 | * Copyright (C) 2005 Luben Tuikov <luben_tuikov@adaptec.com> |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 7 | */ |
| 8 | |
| 9 | #ifndef _LIBSAS_H_ |
| 10 | #define _LIBSAS_H_ |
| 11 | |
| 12 | |
| 13 | #include <linux/timer.h> |
| 14 | #include <linux/pci.h> |
| 15 | #include <scsi/sas.h> |
Darrick J. Wong | fa1c1e8 | 2006-08-10 19:19:47 -0700 | [diff] [blame] | 16 | #include <linux/libata.h> |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 17 | #include <linux/list.h> |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 18 | #include <scsi/scsi_device.h> |
| 19 | #include <scsi/scsi_cmnd.h> |
| 20 | #include <scsi/scsi_transport_sas.h> |
Adrian Bunk | 87ae9af | 2007-10-30 10:35:04 +0100 | [diff] [blame] | 21 | #include <linux/scatterlist.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 22 | #include <linux/slab.h> |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 23 | |
| 24 | struct block_device; |
| 25 | |
| 26 | enum sas_class { |
| 27 | SAS, |
| 28 | EXPANDER |
| 29 | }; |
| 30 | |
| 31 | enum sas_phy_role { |
| 32 | PHY_ROLE_NONE = 0, |
| 33 | PHY_ROLE_TARGET = 0x40, |
| 34 | PHY_ROLE_INITIATOR = 0x80, |
| 35 | }; |
| 36 | |
| 37 | enum sas_phy_type { |
John Garry | ff525b6 | 2019-01-05 00:01:26 +0800 | [diff] [blame] | 38 | PHY_TYPE_PHYSICAL, |
| 39 | PHY_TYPE_VIRTUAL |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 40 | }; |
| 41 | |
| 42 | /* The events are mnemonically described in sas_dump.c |
| 43 | * so when updating/adding events here, please also |
| 44 | * update the other file too. |
| 45 | */ |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 46 | enum port_event { |
| 47 | PORTE_BYTES_DMAED = 0U, |
Jason Yan | 0d78f96 | 2017-09-06 17:15:05 +0800 | [diff] [blame] | 48 | PORTE_BROADCAST_RCVD, |
| 49 | PORTE_LINK_RESET_ERR, |
| 50 | PORTE_TIMER_EVENT, |
| 51 | PORTE_HARD_RESET, |
| 52 | PORT_NUM_EVENTS, |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 53 | }; |
| 54 | |
| 55 | enum phy_event { |
| 56 | PHYE_LOSS_OF_SIGNAL = 0U, |
Jason Yan | 0d78f96 | 2017-09-06 17:15:05 +0800 | [diff] [blame] | 57 | PHYE_OOB_DONE, |
| 58 | PHYE_OOB_ERROR, |
| 59 | PHYE_SPINUP_HOLD, /* hot plug SATA, no COMWAKE sent */ |
| 60 | PHYE_RESUME_TIMEOUT, |
Jason Yan | f12486e | 2017-12-08 17:42:05 +0800 | [diff] [blame] | 61 | PHYE_SHUTDOWN, |
Jason Yan | 0d78f96 | 2017-09-06 17:15:05 +0800 | [diff] [blame] | 62 | PHY_NUM_EVENTS, |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 63 | }; |
| 64 | |
| 65 | enum discover_event { |
| 66 | DISCE_DISCOVER_DOMAIN = 0U, |
Jason Yan | 0d78f96 | 2017-09-06 17:15:05 +0800 | [diff] [blame] | 67 | DISCE_REVALIDATE_DOMAIN, |
Jason Yan | 0d78f96 | 2017-09-06 17:15:05 +0800 | [diff] [blame] | 68 | DISCE_SUSPEND, |
| 69 | DISCE_RESUME, |
Jason Yan | 0d78f96 | 2017-09-06 17:15:05 +0800 | [diff] [blame] | 70 | DISC_NUM_EVENTS, |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 71 | }; |
| 72 | |
| 73 | /* ---------- Expander Devices ---------- */ |
| 74 | |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 75 | #define to_dom_device(_obj) container_of(_obj, struct domain_device, dev_obj) |
| 76 | #define to_dev_attr(_attr) container_of(_attr, struct domain_dev_attribute,\ |
John Garry | ff525b6 | 2019-01-05 00:01:26 +0800 | [diff] [blame] | 77 | attr) |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 78 | |
| 79 | enum routing_attribute { |
| 80 | DIRECT_ROUTING, |
| 81 | SUBTRACTIVE_ROUTING, |
| 82 | TABLE_ROUTING, |
| 83 | }; |
| 84 | |
| 85 | enum ex_phy_state { |
| 86 | PHY_EMPTY, |
| 87 | PHY_VACANT, |
| 88 | PHY_NOT_PRESENT, |
| 89 | PHY_DEVICE_DISCOVERED |
| 90 | }; |
| 91 | |
| 92 | struct ex_phy { |
| 93 | int phy_id; |
| 94 | |
| 95 | enum ex_phy_state phy_state; |
| 96 | |
James Bottomley | aa9f832 | 2013-05-07 14:44:06 -0700 | [diff] [blame] | 97 | enum sas_device_type attached_dev_type; |
James Bottomley | 88edf74 | 2006-09-06 17:36:13 -0500 | [diff] [blame] | 98 | enum sas_linkrate linkrate; |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 99 | |
| 100 | u8 attached_sata_host:1; |
| 101 | u8 attached_sata_dev:1; |
| 102 | u8 attached_sata_ps:1; |
| 103 | |
Darrick J. Wong | 5929faf | 2007-11-05 11:51:17 -0800 | [diff] [blame] | 104 | enum sas_protocol attached_tproto; |
| 105 | enum sas_protocol attached_iproto; |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 106 | |
| 107 | u8 attached_sas_addr[SAS_ADDR_SIZE]; |
| 108 | u8 attached_phy_id; |
| 109 | |
Dan Williams | 303694e | 2012-06-21 23:41:51 -0700 | [diff] [blame] | 110 | int phy_change_count; |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 111 | enum routing_attribute routing_attr; |
| 112 | u8 virtual:1; |
| 113 | |
| 114 | int last_da_index; |
| 115 | |
| 116 | struct sas_phy *phy; |
| 117 | struct sas_port *port; |
| 118 | }; |
| 119 | |
| 120 | struct expander_device { |
| 121 | struct list_head children; |
| 122 | |
Dan Williams | 303694e | 2012-06-21 23:41:51 -0700 | [diff] [blame] | 123 | int ex_change_count; |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 124 | u16 max_route_indexes; |
| 125 | u8 num_phys; |
Luben Tuikov | ffaac8f | 2011-09-22 09:41:36 -0700 | [diff] [blame] | 126 | |
| 127 | u8 t2t_supp:1; |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 128 | u8 configuring:1; |
| 129 | u8 conf_route_table:1; |
Luben Tuikov | ffaac8f | 2011-09-22 09:41:36 -0700 | [diff] [blame] | 130 | |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 131 | u8 enclosure_logical_id[8]; |
| 132 | |
| 133 | struct ex_phy *ex_phy; |
| 134 | struct sas_port *parent_port; |
Jeff Skirvin | 89d3cf6 | 2011-11-16 09:44:13 +0000 | [diff] [blame] | 135 | |
| 136 | struct mutex cmd_mutex; |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 137 | }; |
| 138 | |
| 139 | /* ---------- SATA device ---------- */ |
Dan Williams | 6ef1b51 | 2012-06-22 10:52:34 -0700 | [diff] [blame] | 140 | #define ATA_RESP_FIS_SIZE 24 |
| 141 | |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 142 | struct sata_device { |
Hannes Reinecke | 1cbd772 | 2014-11-05 13:08:20 +0100 | [diff] [blame] | 143 | unsigned int class; |
Hannes Reinecke | 1cbd772 | 2014-11-05 13:08:20 +0100 | [diff] [blame] | 144 | u8 port_no; /* port number, if this is a PM (Port) */ |
Darrick J. Wong | fa1c1e8 | 2006-08-10 19:19:47 -0700 | [diff] [blame] | 145 | |
| 146 | struct ata_port *ap; |
Jason Yan | 2fa4a32 | 2018-05-10 11:05:16 +0800 | [diff] [blame] | 147 | struct ata_host *ata_host; |
Huacai Chen | c2e8fbf | 2017-11-21 14:23:39 +0100 | [diff] [blame] | 148 | struct smp_resp rps_resp ____cacheline_aligned; /* report_phy_sata_resp */ |
Dan Williams | 6ef1b51 | 2012-06-22 10:52:34 -0700 | [diff] [blame] | 149 | u8 fis[ATA_RESP_FIS_SIZE]; |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 150 | }; |
| 151 | |
Dan Williams | 5db45bd | 2012-06-21 23:30:48 -0700 | [diff] [blame] | 152 | struct ssp_device { |
| 153 | struct list_head eh_list_node; /* pending a user requested eh action */ |
| 154 | struct scsi_lun reset_lun; |
| 155 | }; |
| 156 | |
Dan Williams | e139942 | 2012-01-07 08:52:39 +0000 | [diff] [blame] | 157 | enum { |
| 158 | SAS_DEV_GONE, |
Dan Williams | 303694e | 2012-06-21 23:41:51 -0700 | [diff] [blame] | 159 | SAS_DEV_FOUND, /* device notified to lldd */ |
Dan Williams | 87c8331 | 2011-11-17 17:59:51 -0800 | [diff] [blame] | 160 | SAS_DEV_DESTROY, |
Dan Williams | e4a9c37 | 2012-06-21 23:25:27 -0700 | [diff] [blame] | 161 | SAS_DEV_EH_PENDING, |
Dan Williams | 5db45bd | 2012-06-21 23:30:48 -0700 | [diff] [blame] | 162 | SAS_DEV_LU_RESET, |
| 163 | SAS_DEV_RESET, |
Dan Williams | e139942 | 2012-01-07 08:52:39 +0000 | [diff] [blame] | 164 | }; |
| 165 | |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 166 | struct domain_device { |
Dan Williams | 9095a64 | 2011-11-28 11:29:20 -0800 | [diff] [blame] | 167 | spinlock_t done_lock; |
James Bottomley | aa9f832 | 2013-05-07 14:44:06 -0700 | [diff] [blame] | 168 | enum sas_device_type dev_type; |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 169 | |
John Garry | ff525b6 | 2019-01-05 00:01:26 +0800 | [diff] [blame] | 170 | enum sas_linkrate linkrate; |
| 171 | enum sas_linkrate min_linkrate; |
| 172 | enum sas_linkrate max_linkrate; |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 173 | |
John Garry | ff525b6 | 2019-01-05 00:01:26 +0800 | [diff] [blame] | 174 | int pathways; |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 175 | |
John Garry | ff525b6 | 2019-01-05 00:01:26 +0800 | [diff] [blame] | 176 | struct domain_device *parent; |
| 177 | struct list_head siblings; /* devices on the same level */ |
| 178 | struct asd_sas_port *port; /* shortcut to root of the tree */ |
Dan Williams | f41a0c4 | 2011-12-21 21:33:17 -0800 | [diff] [blame] | 179 | struct sas_phy *phy; |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 180 | |
John Garry | ff525b6 | 2019-01-05 00:01:26 +0800 | [diff] [blame] | 181 | struct list_head dev_list_node; |
Dan Williams | 87c8331 | 2011-11-17 17:59:51 -0800 | [diff] [blame] | 182 | struct list_head disco_list_node; /* awaiting probe or destruct */ |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 183 | |
John Garry | ff525b6 | 2019-01-05 00:01:26 +0800 | [diff] [blame] | 184 | enum sas_protocol iproto; |
| 185 | enum sas_protocol tproto; |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 186 | |
John Garry | ff525b6 | 2019-01-05 00:01:26 +0800 | [diff] [blame] | 187 | struct sas_rphy *rphy; |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 188 | |
John Garry | ff525b6 | 2019-01-05 00:01:26 +0800 | [diff] [blame] | 189 | u8 sas_addr[SAS_ADDR_SIZE]; |
| 190 | u8 hashed_sas_addr[HASHED_SAS_ADDR_SIZE]; |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 191 | |
John Garry | ff525b6 | 2019-01-05 00:01:26 +0800 | [diff] [blame] | 192 | u8 frame_rcvd[32]; |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 193 | |
John Garry | ff525b6 | 2019-01-05 00:01:26 +0800 | [diff] [blame] | 194 | union { |
| 195 | struct expander_device ex_dev; |
| 196 | struct sata_device sata_dev; /* STP & directly attached */ |
Dan Williams | 5db45bd | 2012-06-21 23:30:48 -0700 | [diff] [blame] | 197 | struct ssp_device ssp_dev; |
John Garry | ff525b6 | 2019-01-05 00:01:26 +0800 | [diff] [blame] | 198 | }; |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 199 | |
John Garry | ff525b6 | 2019-01-05 00:01:26 +0800 | [diff] [blame] | 200 | void *lldd_dev; |
Dan Williams | e139942 | 2012-01-07 08:52:39 +0000 | [diff] [blame] | 201 | unsigned long state; |
Dan Williams | 735f7d2 | 2011-11-17 17:59:47 -0800 | [diff] [blame] | 202 | struct kref kref; |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 203 | }; |
| 204 | |
Dan Williams | 22b9153 | 2012-03-09 11:00:06 -0800 | [diff] [blame] | 205 | struct sas_work { |
| 206 | struct list_head drain_node; |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 207 | struct work_struct work; |
Dan Williams | 22b9153 | 2012-03-09 11:00:06 -0800 | [diff] [blame] | 208 | }; |
| 209 | |
John Garry | 924a354 | 2019-06-10 20:41:41 +0800 | [diff] [blame] | 210 | static inline bool dev_is_expander(enum sas_device_type type) |
John Garry | 085f104 | 2019-04-12 16:57:55 +0800 | [diff] [blame] | 211 | { |
| 212 | return type == SAS_EDGE_EXPANDER_DEVICE || |
| 213 | type == SAS_FANOUT_EXPANDER_DEVICE; |
| 214 | } |
| 215 | |
Dan Williams | 22b9153 | 2012-03-09 11:00:06 -0800 | [diff] [blame] | 216 | static inline void INIT_SAS_WORK(struct sas_work *sw, void (*fn)(struct work_struct *)) |
| 217 | { |
| 218 | INIT_WORK(&sw->work, fn); |
| 219 | INIT_LIST_HEAD(&sw->drain_node); |
| 220 | } |
| 221 | |
| 222 | struct sas_discovery_event { |
| 223 | struct sas_work work; |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 224 | struct asd_sas_port *port; |
| 225 | }; |
| 226 | |
Dan Williams | 22b9153 | 2012-03-09 11:00:06 -0800 | [diff] [blame] | 227 | static inline struct sas_discovery_event *to_sas_discovery_event(struct work_struct *work) |
| 228 | { |
| 229 | struct sas_discovery_event *ev = container_of(work, typeof(*ev), work.work); |
| 230 | |
| 231 | return ev; |
| 232 | } |
| 233 | |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 234 | struct sas_discovery { |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 235 | struct sas_discovery_event disc_work[DISC_NUM_EVENTS]; |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 236 | unsigned long pending; |
John Garry | 7b27c5f | 2019-04-12 16:57:52 +0800 | [diff] [blame] | 237 | u8 fanout_sas_addr[SAS_ADDR_SIZE]; |
| 238 | u8 eeds_a[SAS_ADDR_SIZE]; |
| 239 | u8 eeds_b[SAS_ADDR_SIZE]; |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 240 | int max_level; |
| 241 | }; |
| 242 | |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 243 | /* The port struct is Class:RW, driver:RO */ |
| 244 | struct asd_sas_port { |
| 245 | /* private: */ |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 246 | struct sas_discovery disc; |
| 247 | struct domain_device *port_dev; |
| 248 | spinlock_t dev_list_lock; |
| 249 | struct list_head dev_list; |
Dan Williams | 87c8331 | 2011-11-17 17:59:51 -0800 | [diff] [blame] | 250 | struct list_head disco_list; |
| 251 | struct list_head destroy_list; |
Jason Yan | 0558f33 | 2017-12-08 17:42:09 +0800 | [diff] [blame] | 252 | struct list_head sas_port_del_list; |
James Bottomley | 88edf74 | 2006-09-06 17:36:13 -0500 | [diff] [blame] | 253 | enum sas_linkrate linkrate; |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 254 | |
Dan Williams | 22b9153 | 2012-03-09 11:00:06 -0800 | [diff] [blame] | 255 | struct sas_work work; |
Dan Williams | 303694e | 2012-06-21 23:41:51 -0700 | [diff] [blame] | 256 | int suspended; |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 257 | |
| 258 | /* public: */ |
| 259 | int id; |
| 260 | |
| 261 | enum sas_class class; |
| 262 | u8 sas_addr[SAS_ADDR_SIZE]; |
| 263 | u8 attached_sas_addr[SAS_ADDR_SIZE]; |
Darrick J. Wong | 5929faf | 2007-11-05 11:51:17 -0800 | [diff] [blame] | 264 | enum sas_protocol iproto; |
| 265 | enum sas_protocol tproto; |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 266 | |
| 267 | enum sas_oob_mode oob_mode; |
| 268 | |
| 269 | spinlock_t phy_list_lock; |
| 270 | struct list_head phy_list; |
| 271 | int num_phys; |
| 272 | u32 phy_mask; |
| 273 | |
| 274 | struct sas_ha_struct *ha; |
| 275 | |
| 276 | struct sas_port *port; |
| 277 | |
| 278 | void *lldd_port; /* not touched by the sas class code */ |
| 279 | }; |
| 280 | |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 281 | struct asd_sas_event { |
Dan Williams | 22b9153 | 2012-03-09 11:00:06 -0800 | [diff] [blame] | 282 | struct sas_work work; |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 283 | struct asd_sas_phy *phy; |
Jason Yan | 1c393b9 | 2017-12-08 17:42:04 +0800 | [diff] [blame] | 284 | int event; |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 285 | }; |
| 286 | |
Dan Williams | 22b9153 | 2012-03-09 11:00:06 -0800 | [diff] [blame] | 287 | static inline struct asd_sas_event *to_asd_sas_event(struct work_struct *work) |
| 288 | { |
| 289 | struct asd_sas_event *ev = container_of(work, typeof(*ev), work.work); |
| 290 | |
| 291 | return ev; |
| 292 | } |
| 293 | |
Jason Yan | 1c393b9 | 2017-12-08 17:42:04 +0800 | [diff] [blame] | 294 | static inline void INIT_SAS_EVENT(struct asd_sas_event *ev, |
| 295 | void (*fn)(struct work_struct *), |
| 296 | struct asd_sas_phy *phy, int event) |
| 297 | { |
| 298 | INIT_SAS_WORK(&ev->work, fn); |
| 299 | ev->phy = phy; |
| 300 | ev->event = event; |
| 301 | } |
| 302 | |
Jason Yan | f12486e | 2017-12-08 17:42:05 +0800 | [diff] [blame] | 303 | #define SAS_PHY_SHUTDOWN_THRES 1024 |
Jason Yan | 1c393b9 | 2017-12-08 17:42:04 +0800 | [diff] [blame] | 304 | |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 305 | /* The phy pretty much is controlled by the LLDD. |
| 306 | * The class only reads those fields. |
| 307 | */ |
| 308 | struct asd_sas_phy { |
| 309 | /* private: */ |
Jason Yan | f12486e | 2017-12-08 17:42:05 +0800 | [diff] [blame] | 310 | atomic_t event_nr; |
| 311 | int in_shutdown; |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 312 | int error; |
Dan Williams | 303694e | 2012-06-21 23:41:51 -0700 | [diff] [blame] | 313 | int suspended; |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 314 | |
| 315 | struct sas_phy *phy; |
| 316 | |
| 317 | /* public: */ |
| 318 | /* The following are class:RO, driver:R/W */ |
| 319 | int enabled; /* must be set */ |
| 320 | |
| 321 | int id; /* must be set */ |
| 322 | enum sas_class class; |
Darrick J. Wong | 5929faf | 2007-11-05 11:51:17 -0800 | [diff] [blame] | 323 | enum sas_protocol iproto; |
| 324 | enum sas_protocol tproto; |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 325 | |
| 326 | enum sas_phy_type type; |
| 327 | enum sas_phy_role role; |
| 328 | enum sas_oob_mode oob_mode; |
James Bottomley | 88edf74 | 2006-09-06 17:36:13 -0500 | [diff] [blame] | 329 | enum sas_linkrate linkrate; |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 330 | |
| 331 | u8 *sas_addr; /* must be set */ |
| 332 | u8 attached_sas_addr[SAS_ADDR_SIZE]; /* class:RO, driver: R/W */ |
| 333 | |
| 334 | spinlock_t frame_rcvd_lock; |
| 335 | u8 *frame_rcvd; /* must be set */ |
| 336 | int frame_rcvd_size; |
| 337 | |
| 338 | spinlock_t sas_prim_lock; |
| 339 | u32 sas_prim; |
| 340 | |
| 341 | struct list_head port_phy_el; /* driver:RO */ |
| 342 | struct asd_sas_port *port; /* Class:RW, driver: RO */ |
| 343 | |
| 344 | struct sas_ha_struct *ha; /* may be set; the class sets it anyway */ |
| 345 | |
| 346 | void *lldd_phy; /* not touched by the sas_class_code */ |
| 347 | }; |
| 348 | |
| 349 | struct scsi_core { |
| 350 | struct Scsi_Host *shost; |
| 351 | |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 352 | }; |
| 353 | |
Darrick J. Wong | 6b0efb8 | 2007-01-11 14:15:43 -0800 | [diff] [blame] | 354 | enum sas_ha_state { |
| 355 | SAS_HA_REGISTERED, |
Dan Williams | b1124cd | 2011-12-19 16:42:34 -0800 | [diff] [blame] | 356 | SAS_HA_DRAINING, |
Dan Williams | 87c8331 | 2011-11-17 17:59:51 -0800 | [diff] [blame] | 357 | SAS_HA_ATA_EH_ACTIVE, |
Dan Williams | 9095a64 | 2011-11-28 11:29:20 -0800 | [diff] [blame] | 358 | SAS_HA_FROZEN, |
Darrick J. Wong | 6b0efb8 | 2007-01-11 14:15:43 -0800 | [diff] [blame] | 359 | }; |
| 360 | |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 361 | struct sas_ha_struct { |
| 362 | /* private: */ |
Dan Williams | b1124cd | 2011-12-19 16:42:34 -0800 | [diff] [blame] | 363 | struct list_head defer_q; /* work queued while draining */ |
| 364 | struct mutex drain_mutex; |
Dan Williams | f8daa6e | 2011-12-19 17:02:25 -0800 | [diff] [blame] | 365 | unsigned long state; |
Dan Williams | e4a9c37 | 2012-06-21 23:25:27 -0700 | [diff] [blame] | 366 | spinlock_t lock; |
| 367 | int eh_active; |
Dan Williams | 5db45bd | 2012-06-21 23:30:48 -0700 | [diff] [blame] | 368 | wait_queue_head_t eh_wait_q; |
| 369 | struct list_head eh_dev_q; |
Darrick J. Wong | 6b0efb8 | 2007-01-11 14:15:43 -0800 | [diff] [blame] | 370 | |
Dan Williams | 87c8331 | 2011-11-17 17:59:51 -0800 | [diff] [blame] | 371 | struct mutex disco_mutex; |
| 372 | |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 373 | struct scsi_core core; |
| 374 | |
| 375 | /* public: */ |
| 376 | char *sas_ha_name; |
Jeff Garzik | 1d1bbee | 2007-07-26 09:28:37 -0400 | [diff] [blame] | 377 | struct device *dev; /* should be set */ |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 378 | struct module *lldd_module; /* should be set */ |
| 379 | |
Jason Yan | 93bdbd0 | 2017-12-08 17:42:07 +0800 | [diff] [blame] | 380 | struct workqueue_struct *event_q; |
| 381 | struct workqueue_struct *disco_q; |
| 382 | |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 383 | u8 *sas_addr; /* must be set */ |
| 384 | u8 hashed_sas_addr[HASHED_SAS_ADDR_SIZE]; |
| 385 | |
| 386 | spinlock_t phy_port_lock; |
| 387 | struct asd_sas_phy **sas_phy; /* array of valid pointers, must be set */ |
| 388 | struct asd_sas_port **sas_port; /* array of valid pointers, must be set */ |
| 389 | int num_phys; /* must be set, gt 0, static */ |
| 390 | |
Dan Williams | 00f0254 | 2010-10-01 13:55:52 -0700 | [diff] [blame] | 391 | int strict_wide_ports; /* both sas_addr and attached_sas_addr must match |
| 392 | * their siblings when forming wide ports */ |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 393 | |
| 394 | /* LLDD calls these to notify the class of an event. */ |
Johannes Thumshirn | 6d311fa | 2017-06-14 13:52:43 +0200 | [diff] [blame] | 395 | int (*notify_port_event)(struct asd_sas_phy *, enum port_event); |
| 396 | int (*notify_phy_event)(struct asd_sas_phy *, enum phy_event); |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 397 | |
| 398 | void *lldd_ha; /* not touched by sas class code */ |
Darrick J. Wong | f456393 | 2006-10-30 15:18:39 -0800 | [diff] [blame] | 399 | |
Dan Williams | 3944f50 | 2011-11-29 12:08:50 -0800 | [diff] [blame] | 400 | struct list_head eh_done_q; /* complete via scsi_eh_flush_done_q */ |
| 401 | struct list_head eh_ata_q; /* scmds to promote from sas to ata eh */ |
Jason Yan | f12486e | 2017-12-08 17:42:05 +0800 | [diff] [blame] | 402 | |
| 403 | int event_thres; |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 404 | }; |
| 405 | |
| 406 | #define SHOST_TO_SAS_HA(_shost) (*(struct sas_ha_struct **)(_shost)->hostdata) |
| 407 | |
| 408 | static inline struct domain_device * |
| 409 | starget_to_domain_dev(struct scsi_target *starget) { |
| 410 | return starget->hostdata; |
| 411 | } |
| 412 | |
| 413 | static inline struct domain_device * |
| 414 | sdev_to_domain_dev(struct scsi_device *sdev) { |
| 415 | return starget_to_domain_dev(sdev->sdev_target); |
| 416 | } |
| 417 | |
Dan Williams | b50102d | 2011-09-30 18:52:19 -0700 | [diff] [blame] | 418 | static inline struct ata_device *sas_to_ata_dev(struct domain_device *dev) |
| 419 | { |
| 420 | return &dev->sata_dev.ap->link.device[0]; |
| 421 | } |
| 422 | |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 423 | static inline struct domain_device * |
| 424 | cmd_to_domain_dev(struct scsi_cmnd *cmd) |
| 425 | { |
| 426 | return sdev_to_domain_dev(cmd->device); |
| 427 | } |
| 428 | |
| 429 | void sas_hash_addr(u8 *hashed, const u8 *sas_addr); |
| 430 | |
| 431 | /* Before calling a notify event, LLDD should use this function |
| 432 | * when the link is severed (possibly from its tasklet). |
| 433 | * The idea is that the Class only reads those, while the LLDD, |
| 434 | * can R/W these (thus avoiding a race). |
| 435 | */ |
| 436 | static inline void sas_phy_disconnected(struct asd_sas_phy *phy) |
| 437 | { |
| 438 | phy->oob_mode = OOB_NOT_CONNECTED; |
James Bottomley | 88edf74 | 2006-09-06 17:36:13 -0500 | [diff] [blame] | 439 | phy->linkrate = SAS_LINK_RATE_UNKNOWN; |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 440 | } |
| 441 | |
Dan Williams | 8ec6552 | 2011-09-01 21:18:20 -0700 | [diff] [blame] | 442 | static inline unsigned int to_sas_gpio_od(int device, int bit) |
| 443 | { |
| 444 | return 3 * device + bit; |
| 445 | } |
| 446 | |
Dan Williams | f41a0c4 | 2011-12-21 21:33:17 -0800 | [diff] [blame] | 447 | static inline void sas_put_local_phy(struct sas_phy *phy) |
| 448 | { |
| 449 | put_device(&phy->dev); |
| 450 | } |
| 451 | |
Dan Williams | d962480 | 2011-09-23 16:43:45 -0700 | [diff] [blame] | 452 | #ifdef CONFIG_SCSI_SAS_HOST_SMP |
Dan Williams | 8ec6552 | 2011-09-01 21:18:20 -0700 | [diff] [blame] | 453 | int try_test_sas_gpio_gp_bit(unsigned int od, u8 *data, u8 index, u8 count); |
Dan Williams | d962480 | 2011-09-23 16:43:45 -0700 | [diff] [blame] | 454 | #else |
| 455 | static inline int try_test_sas_gpio_gp_bit(unsigned int od, u8 *data, u8 index, u8 count) |
| 456 | { |
| 457 | return -1; |
| 458 | } |
| 459 | #endif |
Dan Williams | 8ec6552 | 2011-09-01 21:18:20 -0700 | [diff] [blame] | 460 | |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 461 | /* ---------- Tasks ---------- */ |
| 462 | /* |
| 463 | service_response | SAS_TASK_COMPLETE | SAS_TASK_UNDELIVERED | |
| 464 | exec_status | | | |
| 465 | ---------------------+---------------------+-----------------------+ |
| 466 | SAM_... | X | | |
| 467 | DEV_NO_RESPONSE | X | X | |
| 468 | INTERRUPTED | X | | |
| 469 | QUEUE_FULL | | X | |
| 470 | DEVICE_UNKNOWN | | X | |
| 471 | SG_ERR | | X | |
| 472 | ---------------------+---------------------+-----------------------+ |
| 473 | */ |
| 474 | |
| 475 | enum service_response { |
| 476 | SAS_TASK_COMPLETE, |
| 477 | SAS_TASK_UNDELIVERED = -1, |
| 478 | }; |
| 479 | |
| 480 | enum exec_status { |
Dan Williams | a3a1425 | 2011-12-06 23:24:42 -0800 | [diff] [blame] | 481 | /* The SAM_STAT_.. codes fit in the lower 6 bits, alias some of |
| 482 | * them here to silence 'case value not in enumerated type' warnings |
| 483 | */ |
| 484 | __SAM_STAT_CHECK_CONDITION = SAM_STAT_CHECK_CONDITION, |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 485 | |
| 486 | SAS_DEV_NO_RESPONSE = 0x80, |
| 487 | SAS_DATA_UNDERRUN, |
| 488 | SAS_DATA_OVERRUN, |
| 489 | SAS_INTERRUPTED, |
| 490 | SAS_QUEUE_FULL, |
| 491 | SAS_DEVICE_UNKNOWN, |
| 492 | SAS_SG_ERR, |
| 493 | SAS_OPEN_REJECT, |
| 494 | SAS_OPEN_TO, |
| 495 | SAS_PROTO_RESPONSE, |
| 496 | SAS_PHY_DOWN, |
| 497 | SAS_NAK_R_ERR, |
| 498 | SAS_PENDING, |
| 499 | SAS_ABORTED_TASK, |
| 500 | }; |
| 501 | |
| 502 | /* When a task finishes with a response, the LLDD examines the |
| 503 | * response: |
John Garry | ff525b6 | 2019-01-05 00:01:26 +0800 | [diff] [blame] | 504 | * - For an ATA task task_status_struct::stat is set to |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 505 | * SAS_PROTO_RESPONSE, and the task_status_struct::buf is set to the |
| 506 | * contents of struct ata_task_resp. |
John Garry | ff525b6 | 2019-01-05 00:01:26 +0800 | [diff] [blame] | 507 | * - For SSP tasks, if no data is present or status/TMF response |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 508 | * is valid, task_status_struct::stat is set. If data is present |
| 509 | * (SENSE data), the LLDD copies up to SAS_STATUS_BUF_SIZE, sets |
| 510 | * task_status_struct::buf_valid_size, and task_status_struct::stat is |
| 511 | * set to SAM_CHECK_COND. |
| 512 | * |
| 513 | * "buf" has format SCSI Sense for SSP task, or struct ata_task_resp |
| 514 | * for ATA task. |
| 515 | * |
| 516 | * "frame_len" is the total frame length, which could be more or less |
| 517 | * than actually copied. |
| 518 | * |
| 519 | * Tasks ending with response, always set the residual field. |
| 520 | */ |
| 521 | struct ata_task_resp { |
| 522 | u16 frame_len; |
Dan Williams | 6ef1b51 | 2012-06-22 10:52:34 -0700 | [diff] [blame] | 523 | u8 ending_fis[ATA_RESP_FIS_SIZE]; /* dev to host or data-in */ |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 524 | }; |
| 525 | |
| 526 | #define SAS_STATUS_BUF_SIZE 96 |
| 527 | |
| 528 | struct task_status_struct { |
| 529 | enum service_response resp; |
| 530 | enum exec_status stat; |
| 531 | int buf_valid_size; |
| 532 | |
| 533 | u8 buf[SAS_STATUS_BUF_SIZE]; |
| 534 | |
| 535 | u32 residual; |
| 536 | enum sas_open_rej_reason open_rej_reason; |
| 537 | }; |
| 538 | |
| 539 | /* ATA and ATAPI task queuable to a SAS LLDD. |
| 540 | */ |
| 541 | struct sas_ata_task { |
| 542 | struct host_to_dev_fis fis; |
| 543 | u8 atapi_packet[16]; /* 0 if not ATAPI task */ |
| 544 | |
| 545 | u8 retry_count; /* hardware retry, should be > 0 */ |
| 546 | |
| 547 | u8 dma_xfer:1; /* PIO:0 or DMA:1 */ |
| 548 | u8 use_ncq:1; |
| 549 | u8 set_affil_pol:1; |
| 550 | u8 stp_affil_pol:1; |
| 551 | |
| 552 | u8 device_control_reg_update:1; |
| 553 | }; |
| 554 | |
| 555 | struct sas_smp_task { |
| 556 | struct scatterlist smp_req; |
| 557 | struct scatterlist smp_resp; |
| 558 | }; |
| 559 | |
| 560 | enum task_attribute { |
| 561 | TASK_ATTR_SIMPLE = 0, |
| 562 | TASK_ATTR_HOQ = 1, |
| 563 | TASK_ATTR_ORDERED= 2, |
| 564 | TASK_ATTR_ACA = 4, |
| 565 | }; |
| 566 | |
| 567 | struct sas_ssp_task { |
| 568 | u8 retry_count; /* hardware retry, should be > 0 */ |
| 569 | |
| 570 | u8 LUN[8]; |
| 571 | u8 enable_first_burst:1; |
| 572 | enum task_attribute task_attr; |
| 573 | u8 task_prio; |
James Bottomley | e73823f7 | 2013-05-07 15:38:18 -0700 | [diff] [blame] | 574 | struct scsi_cmnd *cmd; |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 575 | }; |
| 576 | |
| 577 | struct sas_task { |
| 578 | struct domain_device *dev; |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 579 | |
| 580 | spinlock_t task_state_lock; |
| 581 | unsigned task_state_flags; |
| 582 | |
Darrick J. Wong | 5929faf | 2007-11-05 11:51:17 -0800 | [diff] [blame] | 583 | enum sas_protocol task_proto; |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 584 | |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 585 | union { |
| 586 | struct sas_ata_task ata_task; |
| 587 | struct sas_smp_task smp_task; |
| 588 | struct sas_ssp_task ssp_task; |
| 589 | }; |
| 590 | |
| 591 | struct scatterlist *scatter; |
| 592 | int num_scatter; |
| 593 | u32 total_xfer_len; |
| 594 | u8 data_dir:2; /* Use PCI_DMA_... */ |
| 595 | |
| 596 | struct task_status_struct task_status; |
| 597 | void (*task_done)(struct sas_task *); |
| 598 | |
| 599 | void *lldd_task; /* for use by LLDDs */ |
| 600 | void *uldd_task; |
Dan Williams | f0bf750 | 2012-06-21 23:36:30 -0700 | [diff] [blame] | 601 | struct sas_task_slow *slow_task; |
| 602 | }; |
Darrick J. Wong | 79a5eb6 | 2006-10-30 15:18:50 -0800 | [diff] [blame] | 603 | |
Dan Williams | f0bf750 | 2012-06-21 23:36:30 -0700 | [diff] [blame] | 604 | struct sas_task_slow { |
| 605 | /* standard/extra infrastructure for slow path commands (SMP and |
| 606 | * internal lldd commands |
| 607 | */ |
| 608 | struct timer_list timer; |
| 609 | struct completion completion; |
Kees Cook | 77570ee | 2017-08-22 16:05:14 -0700 | [diff] [blame] | 610 | struct sas_task *task; |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 611 | }; |
| 612 | |
Darrick J. Wong | f456393 | 2006-10-30 15:18:39 -0800 | [diff] [blame] | 613 | #define SAS_TASK_STATE_PENDING 1 |
| 614 | #define SAS_TASK_STATE_DONE 2 |
| 615 | #define SAS_TASK_STATE_ABORTED 4 |
Darrick J. Wong | 3ebf692 | 2007-01-11 14:15:17 -0800 | [diff] [blame] | 616 | #define SAS_TASK_NEED_DEV_RESET 8 |
Darrick J. Wong | b218a0d | 2007-01-11 14:14:55 -0800 | [diff] [blame] | 617 | #define SAS_TASK_AT_INITIATOR 16 |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 618 | |
Dan Williams | 4fcf812 | 2011-07-29 17:26:39 -0700 | [diff] [blame] | 619 | extern struct sas_task *sas_alloc_task(gfp_t flags); |
Dan Williams | f0bf750 | 2012-06-21 23:36:30 -0700 | [diff] [blame] | 620 | extern struct sas_task *sas_alloc_slow_task(gfp_t flags); |
Dan Williams | 4fcf812 | 2011-07-29 17:26:39 -0700 | [diff] [blame] | 621 | extern void sas_free_task(struct sas_task *task); |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 622 | |
| 623 | struct sas_domain_function_template { |
| 624 | /* The class calls these to notify the LLDD of an event. */ |
| 625 | void (*lldd_port_formed)(struct asd_sas_phy *); |
| 626 | void (*lldd_port_deformed)(struct asd_sas_phy *); |
| 627 | |
| 628 | /* The class calls these when a device is found or gone. */ |
| 629 | int (*lldd_dev_found)(struct domain_device *); |
| 630 | void (*lldd_dev_gone)(struct domain_device *); |
| 631 | |
Christoph Hellwig | 79855d1 | 2014-11-05 10:36:28 +0100 | [diff] [blame] | 632 | int (*lldd_execute_task)(struct sas_task *, gfp_t gfp_flags); |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 633 | |
| 634 | /* Task Management Functions. Must be called from process context. */ |
| 635 | int (*lldd_abort_task)(struct sas_task *); |
| 636 | int (*lldd_abort_task_set)(struct domain_device *, u8 *lun); |
| 637 | int (*lldd_clear_aca)(struct domain_device *, u8 *lun); |
| 638 | int (*lldd_clear_task_set)(struct domain_device *, u8 *lun); |
| 639 | int (*lldd_I_T_nexus_reset)(struct domain_device *); |
Dan Williams | 36a3994 | 2011-11-17 17:59:54 -0800 | [diff] [blame] | 640 | int (*lldd_ata_check_ready)(struct domain_device *); |
Dan Williams | b91bb29 | 2011-11-17 17:59:52 -0800 | [diff] [blame] | 641 | void (*lldd_ata_set_dmamode)(struct domain_device *); |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 642 | int (*lldd_lu_reset)(struct domain_device *, u8 *lun); |
| 643 | int (*lldd_query_task)(struct sas_task *); |
| 644 | |
| 645 | /* Port and Adapter management */ |
| 646 | int (*lldd_clear_nexus_port)(struct asd_sas_port *); |
| 647 | int (*lldd_clear_nexus_ha)(struct sas_ha_struct *); |
| 648 | |
| 649 | /* Phy management */ |
James Bottomley | a01e70e | 2006-09-06 19:28:07 -0500 | [diff] [blame] | 650 | int (*lldd_control_phy)(struct asd_sas_phy *, enum phy_func, void *); |
Dan Williams | 8ec6552 | 2011-09-01 21:18:20 -0700 | [diff] [blame] | 651 | |
| 652 | /* GPIO support */ |
| 653 | int (*lldd_write_gpio)(struct sas_ha_struct *, u8 reg_type, |
| 654 | u8 reg_index, u8 reg_count, u8 *write_data); |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 655 | }; |
| 656 | |
| 657 | extern int sas_register_ha(struct sas_ha_struct *); |
| 658 | extern int sas_unregister_ha(struct sas_ha_struct *); |
Dan Williams | 303694e | 2012-06-21 23:41:51 -0700 | [diff] [blame] | 659 | extern void sas_prep_resume_ha(struct sas_ha_struct *sas_ha); |
| 660 | extern void sas_resume_ha(struct sas_ha_struct *sas_ha); |
| 661 | extern void sas_suspend_ha(struct sas_ha_struct *sas_ha); |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 662 | |
John Garry | ff525b6 | 2019-01-05 00:01:26 +0800 | [diff] [blame] | 663 | int sas_set_phy_speed(struct sas_phy *phy, struct sas_phy_linkrates *rates); |
Darrick J. Wong | dea2221 | 2006-11-07 17:28:55 -0800 | [diff] [blame] | 664 | int sas_phy_reset(struct sas_phy *phy, int hard_reset); |
John Garry | ff525b6 | 2019-01-05 00:01:26 +0800 | [diff] [blame] | 665 | extern int sas_queuecommand(struct Scsi_Host *, struct scsi_cmnd *); |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 666 | extern int sas_target_alloc(struct scsi_target *); |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 667 | extern int sas_slave_configure(struct scsi_device *); |
Christoph Hellwig | db5ed4d | 2014-11-13 15:08:42 +0100 | [diff] [blame] | 668 | extern int sas_change_queue_depth(struct scsi_device *, int new_depth); |
John Garry | ff525b6 | 2019-01-05 00:01:26 +0800 | [diff] [blame] | 669 | extern int sas_bios_param(struct scsi_device *, struct block_device *, |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 670 | sector_t capacity, int *hsc); |
| 671 | extern struct scsi_transport_template * |
| 672 | sas_domain_attach_transport(struct sas_domain_function_template *); |
Jason Yan | 8eea9dd | 2017-12-08 17:42:06 +0800 | [diff] [blame] | 673 | extern struct device_attribute dev_attr_phy_event_threshold; |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 674 | |
| 675 | int sas_discover_root_expander(struct domain_device *); |
| 676 | |
| 677 | void sas_init_ex_attr(void); |
| 678 | |
| 679 | int sas_ex_revalidate_domain(struct domain_device *); |
| 680 | |
Dan Williams | 7d05919 | 2012-01-10 14:39:13 -0800 | [diff] [blame] | 681 | void sas_unregister_domain_devices(struct asd_sas_port *port, int gone); |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 682 | void sas_init_disc(struct sas_discovery *disc, struct asd_sas_port *); |
| 683 | int sas_discover_event(struct asd_sas_port *, enum discover_event ev); |
| 684 | |
| 685 | int sas_discover_sata(struct domain_device *); |
| 686 | int sas_discover_end_dev(struct domain_device *); |
| 687 | |
Dan Williams | 1a34c06 | 2011-09-21 22:05:34 -0700 | [diff] [blame] | 688 | void sas_unregister_dev(struct asd_sas_port *port, struct domain_device *); |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 689 | |
| 690 | void sas_init_dev(struct domain_device *); |
| 691 | |
Darrick J. Wong | 396819f | 2007-01-11 14:15:20 -0800 | [diff] [blame] | 692 | void sas_task_abort(struct sas_task *); |
Dan Williams | 9524c68 | 2012-06-21 23:30:53 -0700 | [diff] [blame] | 693 | int sas_eh_abort_handler(struct scsi_cmnd *cmd); |
Darrick J. Wong | ad68923 | 2007-01-26 14:08:52 -0800 | [diff] [blame] | 694 | int sas_eh_device_reset_handler(struct scsi_cmnd *cmd); |
Hannes Reinecke | cc199e7 | 2017-08-25 13:57:02 +0200 | [diff] [blame] | 695 | int sas_eh_target_reset_handler(struct scsi_cmnd *cmd); |
Darrick J. Wong | 79a5eb6 | 2006-10-30 15:18:50 -0800 | [diff] [blame] | 696 | |
Darrick J. Wong | fa1c1e8 | 2006-08-10 19:19:47 -0700 | [diff] [blame] | 697 | extern void sas_target_destroy(struct scsi_target *); |
| 698 | extern int sas_slave_alloc(struct scsi_device *); |
Nathan Chancellor | 6f4e626 | 2019-02-07 09:07:20 -0700 | [diff] [blame] | 699 | extern int sas_ioctl(struct scsi_device *sdev, unsigned int cmd, |
| 700 | void __user *arg); |
Dan Williams | b1124cd | 2011-12-19 16:42:34 -0800 | [diff] [blame] | 701 | extern int sas_drain_work(struct sas_ha_struct *ha); |
Darrick J. Wong | fa1c1e8 | 2006-08-10 19:19:47 -0700 | [diff] [blame] | 702 | |
James Bottomley | 366ca51 | 2008-01-18 10:47:01 -0600 | [diff] [blame] | 703 | extern void sas_ssp_task_response(struct device *dev, struct sas_task *task, |
| 704 | struct ssp_response_iu *iu); |
Dan Williams | f41a0c4 | 2011-12-21 21:33:17 -0800 | [diff] [blame] | 705 | struct sas_phy *sas_get_local_phy(struct domain_device *dev); |
James Bottomley | 366ca51 | 2008-01-18 10:47:01 -0600 | [diff] [blame] | 706 | |
Darrick J. Wong | 45e6cdf | 2008-02-19 10:49:40 -0800 | [diff] [blame] | 707 | int sas_request_addr(struct Scsi_Host *shost, u8 *addr); |
| 708 | |
James Bottomley | 2908d77 | 2006-08-29 09:22:51 -0500 | [diff] [blame] | 709 | #endif /* _SASLIB_H_ */ |