drivers/scsi/isci/host.h

   1 /*
   2  * This file is provided under a dual BSD/GPLv2 license.  When using or
   3  * redistributing this file, you may do so under either license.
   4  *
   5  * GPL LICENSE SUMMARY
   6  *
   7  * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of version 2 of the GNU General Public License as
  11  * published by the Free Software Foundation.
  12  *
  13  * This program is distributed in the hope that it will be useful, but
  14  * WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
  21  * The full GNU General Public License is included in this distribution
  22  * in the file called LICENSE.GPL.
  23  *
  24  * BSD LICENSE
  25  *
  26  * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
  27  * All rights reserved.
  28  *
  29  * Redistribution and use in source and binary forms, with or without
  30  * modification, are permitted provided that the following conditions
  31  * are met:
  32  *
  33  *   * Redistributions of source code must retain the above copyright
  34  *     notice, this list of conditions and the following disclaimer.
  35  *   * Redistributions in binary form must reproduce the above copyright
  36  *     notice, this list of conditions and the following disclaimer in
  37  *     the documentation and/or other materials provided with the
  38  *     distribution.
  39  *   * Neither the name of Intel Corporation nor the names of its
  40  *     contributors may be used to endorse or promote products derived
  41  *     from this software without specific prior written permission.
  42  *
  43  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  44  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  45  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  46  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  47  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  48  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  49  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  50  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  51  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  52  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  53  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  54  */
  55 #ifndef _SCI_HOST_H_
  56 #define _SCI_HOST_H_
  57
  58 #include "remote_device.h"
  59 #include "phy.h"
  60 #include "isci.h"
  61 #include "remote_node_table.h"
  62 #include "registers.h"
  63 #include "scu_unsolicited_frame.h"
  64 #include "unsolicited_frame_control.h"
  65 #include "probe_roms.h"
  66
  67 struct scic_sds_request;
  68 struct scu_task_context;
  69
  70
  71 /**
  72  * struct scic_power_control -
  73  *
  74  * This structure defines the fields for managing power control for direct
  75  * attached disk devices.
  76  */
  77 struct scic_power_control {
  78         /**
  79          * This field is set when the power control timer is running and cleared when
  80          * it is not.
  81          */
  82         bool timer_started;
  83
  84         /**
  85          * Timer to control when the directed attached disks can consume power.
  86          */
  87         struct sci_timer timer;
  88
  89         /**
  90          * This field is used to keep track of how many phys are put into the
  91          * requesters field.
  92          */
  93         u8 phys_waiting;
  94
  95         /**
  96          * This field is used to keep track of how many phys have been granted to consume power
  97          */
  98         u8 phys_granted_power;
  99
 100         /**
 101          * This field is an array of phys that we are waiting on. The phys are direct
 102          * mapped into requesters via struct scic_sds_phy.phy_index
 103          */
 104         struct scic_sds_phy *requesters[SCI_MAX_PHYS];
 105
 106 };
 107
 108 struct scic_sds_port_configuration_agent;
 109 typedef void (*port_config_fn)(struct scic_sds_controller *,
 110                                struct scic_sds_port_configuration_agent *,
 111                                struct scic_sds_port *, struct scic_sds_phy *);
 112
 113 struct scic_sds_port_configuration_agent {
 114         u16 phy_configured_mask;
 115         u16 phy_ready_mask;
 116         struct {
 117                 u8 min_index;
 118                 u8 max_index;
 119         } phy_valid_port_range[SCI_MAX_PHYS];
 120         bool timer_pending;
 121         port_config_fn link_up_handler;
 122         port_config_fn link_down_handler;
 123         struct sci_timer        timer;
 124 };
 125
 126 /**
 127  * struct scic_sds_controller -
 128  *
 129  * This structure represents the SCU controller object.
 130  */
 131 struct scic_sds_controller {
 132         /**
 133          * This field contains the information for the base controller state
 134          * machine.
 135          */
 136         struct sci_base_state_machine sm;
 137
 138         /**
 139          * Timer for controller start/stop operations.
 140          */
 141         struct sci_timer timer;
 142
 143         /**
 144          * This field contains the user parameters to be utilized for this
 145          * core controller object.
 146          */
 147         union scic_user_parameters user_parameters;
 148
 149         /**
 150          * This field contains the OEM parameters to be utilized for this
 151          * core controller object.
 152          */
 153         union scic_oem_parameters oem_parameters;
 154
 155         /**
 156          * This field contains the port configuration agent for this controller.
 157          */
 158         struct scic_sds_port_configuration_agent port_agent;
 159
 160         /**
 161          * This field is the array of device objects that are currently constructed
 162          * for this controller object.  This table is used as a fast lookup of device
 163          * objects that need to handle device completion notifications from the
 164          * hardware. The table is RNi based.
 165          */
 166         struct scic_sds_remote_device *device_table[SCI_MAX_REMOTE_DEVICES];
 167
 168         /**
 169          * This field is the array of IO request objects that are currently active for
 170          * this controller object.  This table is used as a fast lookup of the io
 171          * request object that need to handle completion queue notifications.  The
 172          * table is TCi based.
 173          */
 174         struct scic_sds_request *io_request_table[SCI_MAX_IO_REQUESTS];
 175
 176         /**
 177          * This field is the free RNi data structure
 178          */
 179         struct scic_remote_node_table available_remote_nodes;
 180
 181         /**
 182          * This filed is the struct scic_power_control data used to controll when direct
 183          * attached devices can consume power.
 184          */
 185         struct scic_power_control power_control;
 186
 187         /**
 188          * This field is the array of sequence values for the IO Tag fields.  Even
 189          * though only 4 bits of the field is used for the sequence the sequence is 16
 190          * bits in size so the sequence can be bitwise or'd with the TCi to build the
 191          * IO Tag value.
 192          */
 193         u16 io_request_sequence[SCI_MAX_IO_REQUESTS];
 194
 195         /**
 196          * This field in the array of sequence values for the RNi.  These are used
 197          * to control io request build to io request start operations.  The sequence
 198          * value is recorded into an io request when it is built and is checked on
 199          * the io request start operation to make sure that there was not a device
 200          * hot plug between the build and start operation.
 201          */
 202         u8 remote_device_sequence[SCI_MAX_REMOTE_DEVICES];
 203
 204         /**
 205          * This field is a pointer to the memory allocated by the driver for the task
 206          * context table.  This data is shared between the hardware and software.
 207          */
 208         struct scu_task_context *task_context_table;
 209
 210         /**
 211          * This field is a pointer to the memory allocated by the driver for the
 212          * remote node context table.  This table is shared between the hardware and
 213          * software.
 214          */
 215         union scu_remote_node_context *remote_node_context_table;
 216
 217         /**
 218          * This field is a pointer to the completion queue.  This memory is
 219          * written to by the hardware and read by the software.
 220          */
 221         u32 *completion_queue;
 222
 223         /**
 224          * This field is the software copy of the completion queue get pointer.  The
 225          * controller object writes this value to the hardware after processing the
 226          * completion entries.
 227          */
 228         u32 completion_queue_get;
 229
 230         /**
 231          * This field is the minimum of the number of hardware supported port entries
 232          * and the software requested port entries.
 233          */
 234         u32 logical_port_entries;
 235
 236         /**
 237          * This field is the minimum number of devices supported by the hardware and
 238          * the number of devices requested by the software.
 239          */
 240         u32 remote_node_entries;
 241
 242         /**
 243          * This field is the minimum number of IO requests supported by the hardware
 244          * and the number of IO requests requested by the software.
 245          */
 246         u32 task_context_entries;
 247
 248         /**
 249          * This object contains all of the unsolicited frame specific
 250          * data utilized by the core controller.
 251          */
 252         struct scic_sds_unsolicited_frame_control uf_control;
 253
 254         /* Phy Startup Data */
 255         /**
 256          * Timer for controller phy request startup. On controller start the
 257          * controller will start each PHY individually in order of phy index.
 258          */
 259         struct sci_timer phy_timer;
 260
 261         /**
 262          * This field is set when the phy_timer is running and is cleared when
 263          * the phy_timer is stopped.
 264          */
 265         bool phy_startup_timer_pending;
 266
 267         /**
 268          * This field is the index of the next phy start.  It is initialized to 0 and
 269          * increments for each phy index that is started.
 270          */
 271         u32 next_phy_to_start;
 272
 273         /**
 274          * This field controlls the invalid link up notifications to the SCI_USER.  If
 275          * an invalid_link_up notification is reported a bit for the PHY index is set
 276          * so further notifications are not made.  Once the PHY object reports link up
 277          * and is made part of a port then this bit for the PHY index is cleared.
 278          */
 279         u8 invalid_phy_mask;
 280
 281         /*
 282          * This field saves the current interrupt coalescing number of the controller.
 283          */
 284         u16 interrupt_coalesce_number;
 285
 286         /*
 287          * This field saves the current interrupt coalescing timeout value in microseconds.
 288          */
 289         u32 interrupt_coalesce_timeout;
 290
 291         /**
 292          * This field is a pointer to the memory mapped register space for the
 293          * struct smu_registers.
 294          */
 295         struct smu_registers __iomem *smu_registers;
 296
 297         /**
 298          * This field is a pointer to the memory mapped register space for the
 299          * struct scu_registers.
 300          */
 301         struct scu_registers __iomem *scu_registers;
 302
 303 };
 304
 305 struct isci_host {
 306         struct scic_sds_controller sci;
 307         u16 tci_head;
 308         u16 tci_tail;
 309         u16 tci_pool[SCI_MAX_IO_REQUESTS];
 310
 311         union scic_oem_parameters oem_parameters;
 312
 313         int id; /* unique within a given pci device */
 314         struct dma_pool *dma_pool;
 315         struct isci_phy phys[SCI_MAX_PHYS];
 316         struct isci_port ports[SCI_MAX_PORTS + 1]; /* includes dummy port */
 317         struct sas_ha_struct sas_ha;
 318
 319         int can_queue;
 320         spinlock_t queue_lock;
 321         spinlock_t state_lock;
 322
 323         struct pci_dev *pdev;
 324
 325         enum isci_status status;
 326         #define IHOST_START_PENDING 0
 327         #define IHOST_STOP_PENDING 1
 328         unsigned long flags;
 329         wait_queue_head_t eventq;
 330         struct Scsi_Host *shost;
 331         struct tasklet_struct completion_tasklet;
 332         struct list_head requests_to_complete;
 333         struct list_head requests_to_errorback;
 334         spinlock_t scic_lock;
 335
 336         struct isci_remote_device devices[SCI_MAX_REMOTE_DEVICES];
 337 };
 338
 339 /**
 340  * enum scic_sds_controller_states - This enumeration depicts all the states
 341  *    for the common controller state machine.
 342  */
 343 enum scic_sds_controller_states {
 344         /**
 345          * Simply the initial state for the base controller state machine.
 346          */
 347         SCIC_INITIAL = 0,
 348
 349         /**
 350          * This state indicates that the controller is reset.  The memory for
 351          * the controller is in it's initial state, but the controller requires
 352          * initialization.
 353          * This state is entered from the INITIAL state.
 354          * This state is entered from the RESETTING state.
 355          */
 356         SCIC_RESET,
 357
 358         /**
 359          * This state is typically an action state that indicates the controller
 360          * is in the process of initialization.  In this state no new IO operations
 361          * are permitted.
 362          * This state is entered from the RESET state.
 363          */
 364         SCIC_INITIALIZING,
 365
 366         /**
 367          * This state indicates that the controller has been successfully
 368          * initialized.  In this state no new IO operations are permitted.
 369          * This state is entered from the INITIALIZING state.
 370          */
 371         SCIC_INITIALIZED,
 372
 373         /**
 374          * This state indicates the the controller is in the process of becoming
 375          * ready (i.e. starting).  In this state no new IO operations are permitted.
 376          * This state is entered from the INITIALIZED state.
 377          */
 378         SCIC_STARTING,
 379
 380         /**
 381          * This state indicates the controller is now ready.  Thus, the user
 382          * is able to perform IO operations on the controller.
 383          * This state is entered from the STARTING state.
 384          */
 385         SCIC_READY,
 386
 387         /**
 388          * This state is typically an action state that indicates the controller
 389          * is in the process of resetting.  Thus, the user is unable to perform
 390          * IO operations on the controller.  A reset is considered destructive in
 391          * most cases.
 392          * This state is entered from the READY state.
 393          * This state is entered from the FAILED state.
 394          * This state is entered from the STOPPED state.
 395          */
 396         SCIC_RESETTING,
 397
 398         /**
 399          * This state indicates that the controller is in the process of stopping.
 400          * In this state no new IO operations are permitted, but existing IO
 401          * operations are allowed to complete.
 402          * This state is entered from the READY state.
 403          */
 404         SCIC_STOPPING,
 405
 406         /**
 407          * This state indicates that the controller has successfully been stopped.
 408          * In this state no new IO operations are permitted.
 409          * This state is entered from the STOPPING state.
 410          */
 411         SCIC_STOPPED,
 412
 413         /**
 414          * This state indicates that the controller could not successfully be
 415          * initialized.  In this state no new IO operations are permitted.
 416          * This state is entered from the INITIALIZING state.
 417          * This state is entered from the STARTING state.
 418          * This state is entered from the STOPPING state.
 419          * This state is entered from the RESETTING state.
 420          */
 421         SCIC_FAILED,
 422 };
 423
 424 /**
 425  * struct isci_pci_info - This class represents the pci function containing the
 426  *    controllers. Depending on PCI SKU, there could be up to 2 controllers in
 427  *    the PCI function.
 428  */
 429 #define SCI_MAX_MSIX_INT (SCI_NUM_MSI_X_INT*SCI_MAX_CONTROLLERS)
 430
 431 struct isci_pci_info {
 432         struct msix_entry msix_entries[SCI_MAX_MSIX_INT];
 433         struct isci_host *hosts[SCI_MAX_CONTROLLERS];
 434         struct isci_orom *orom;
 435 };
 436
 437 static inline struct isci_pci_info *to_pci_info(struct pci_dev *pdev)
 438 {
 439         return pci_get_drvdata(pdev);
 440 }
 441
 442 #define for_each_isci_host(id, ihost, pdev) \
 443         for (id = 0, ihost = to_pci_info(pdev)->hosts[id]; \
 444              id < ARRAY_SIZE(to_pci_info(pdev)->hosts) && ihost; \
 445              ihost = to_pci_info(pdev)->hosts[++id])
 446
 447 static inline enum isci_status isci_host_get_state(struct isci_host *isci_host)
 448 {
 449         return isci_host->status;
 450 }
 451
 452 static inline void isci_host_change_state(struct isci_host *isci_host,
 453                                           enum isci_status status)
 454 {
 455         unsigned long flags;
 456
 457         dev_dbg(&isci_host->pdev->dev,
 458                 "%s: isci_host = %p, state = 0x%x",
 459                 __func__,
 460                 isci_host,
 461                 status);
 462         spin_lock_irqsave(&isci_host->state_lock, flags);
 463         isci_host->status = status;
 464         spin_unlock_irqrestore(&isci_host->state_lock, flags);
 465
 466 }
 467
 468 static inline int isci_host_can_queue(struct isci_host *isci_host, int num)
 469 {
 470         int ret = 0;
 471         unsigned long flags;
 472
 473         spin_lock_irqsave(&isci_host->queue_lock, flags);
 474         if ((isci_host->can_queue - num) < 0) {
 475                 dev_dbg(&isci_host->pdev->dev,
 476                         "%s: isci_host->can_queue = %d\n",
 477                         __func__,
 478                         isci_host->can_queue);
 479                 ret = -SAS_QUEUE_FULL;
 480
 481         } else
 482                 isci_host->can_queue -= num;
 483
 484         spin_unlock_irqrestore(&isci_host->queue_lock, flags);
 485
 486         return ret;
 487 }
 488
 489 static inline void isci_host_can_dequeue(struct isci_host *isci_host, int num)
 490 {
 491         unsigned long flags;
 492
 493         spin_lock_irqsave(&isci_host->queue_lock, flags);
 494         isci_host->can_queue += num;
 495         spin_unlock_irqrestore(&isci_host->queue_lock, flags);
 496 }
 497
 498 static inline void wait_for_start(struct isci_host *ihost)
 499 {
 500         wait_event(ihost->eventq, !test_bit(IHOST_START_PENDING, &ihost->flags));
 501 }
 502
 503 static inline void wait_for_stop(struct isci_host *ihost)
 504 {
 505         wait_event(ihost->eventq, !test_bit(IHOST_STOP_PENDING, &ihost->flags));
 506 }
 507
 508 static inline void wait_for_device_start(struct isci_host *ihost, struct isci_remote_device *idev)
 509 {
 510         wait_event(ihost->eventq, !test_bit(IDEV_START_PENDING, &idev->flags));
 511 }
 512
 513 static inline void wait_for_device_stop(struct isci_host *ihost, struct isci_remote_device *idev)
 514 {
 515         wait_event(ihost->eventq, !test_bit(IDEV_STOP_PENDING, &idev->flags));
 516 }
 517
 518 static inline struct isci_host *dev_to_ihost(struct domain_device *dev)
 519 {
 520         return dev->port->ha->lldd_ha;
 521 }
 522
 523 static inline struct isci_host *scic_to_ihost(struct scic_sds_controller *scic)
 524 {
 525         /* XXX delete after merging scic_sds_contoller and isci_host */
 526         struct isci_host *ihost = container_of(scic, typeof(*ihost), sci);
 527
 528         return ihost;
 529 }
 530
 531 /**
 532  * INCREMENT_QUEUE_GET() -
 533  *
 534  * This macro will increment the specified index to and if the index wraps to 0
 535  * it will toggel the cycle bit.
 536  */
 537 #define INCREMENT_QUEUE_GET(index, cycle, entry_count, bit_toggle) \
 538         { \
 539                 if ((index) + 1 == entry_count) {       \
 540                         (index) = 0; \
 541                         (cycle) = (cycle) ^ (bit_toggle); \
 542                 } else { \
 543                         index = index + 1; \
 544                 } \
 545         }
 546
 547 /**
 548  * scic_sds_controller_get_protocol_engine_group() -
 549  *
 550  * This macro returns the protocol engine group for this controller object.
 551  * Presently we only support protocol engine group 0 so just return that
 552  */
 553 #define scic_sds_controller_get_protocol_engine_group(controller) 0
 554
 555 /**
 556  * scic_sds_io_tag_construct() -
 557  *
 558  * This macro constructs an IO tag from the sequence and index values.
 559  */
 560 #define scic_sds_io_tag_construct(sequence, task_index) \
 561         ((sequence) << 12 | (task_index))
 562
 563 /**
 564  * scic_sds_io_tag_get_sequence() -
 565  *
 566  * This macro returns the IO sequence from the IO tag value.
 567  */
 568 #define scic_sds_io_tag_get_sequence(io_tag) \
 569         (((io_tag) & 0xF000) >> 12)
 570
 571 /**
 572  * scic_sds_io_tag_get_index() -
 573  *
 574  * This macro returns the TCi from the io tag value
 575  */
 576 #define scic_sds_io_tag_get_index(io_tag) \
 577         ((io_tag) & 0x0FFF)
 578
 579 /**
 580  * scic_sds_io_sequence_increment() -
 581  *
 582  * This is a helper macro to increment the io sequence count. We may find in
 583  * the future that it will be faster to store the sequence count in such a way
 584  * as we dont perform the shift operation to build io tag values so therefore
 585  * need a way to incrment them correctly
 586  */
 587 #define scic_sds_io_sequence_increment(value) \
 588         ((value) = (((value) + 1) & 0x000F))
 589
 590 /* expander attached sata devices require 3 rnc slots */
 591 static inline int scic_sds_remote_device_node_count(struct scic_sds_remote_device *sci_dev)
 592 {
 593         struct domain_device *dev = sci_dev_to_domain(sci_dev);
 594
 595         if ((dev->dev_type == SATA_DEV || (dev->tproto & SAS_PROTOCOL_STP)) &&
 596             !sci_dev->is_direct_attached)
 597                 return SCU_STP_REMOTE_NODE_COUNT;
 598         return SCU_SSP_REMOTE_NODE_COUNT;
 599 }
 600
 601 /**
 602  * scic_sds_controller_set_invalid_phy() -
 603  *
 604  * This macro will set the bit in the invalid phy mask for this controller
 605  * object.  This is used to control messages reported for invalid link up
 606  * notifications.
 607  */
 608 #define scic_sds_controller_set_invalid_phy(controller, phy) \
 609         ((controller)->invalid_phy_mask |= (1 << (phy)->phy_index))
 610
 611 /**
 612  * scic_sds_controller_clear_invalid_phy() -
 613  *
 614  * This macro will clear the bit in the invalid phy mask for this controller
 615  * object.  This is used to control messages reported for invalid link up
 616  * notifications.
 617  */
 618 #define scic_sds_controller_clear_invalid_phy(controller, phy) \
 619         ((controller)->invalid_phy_mask &= ~(1 << (phy)->phy_index))
 620
 621 static inline struct device *scic_to_dev(struct scic_sds_controller *scic)
 622 {
 623         return &scic_to_ihost(scic)->pdev->dev;
 624 }
 625
 626 static inline struct device *sciphy_to_dev(struct scic_sds_phy *sci_phy)
 627 {
 628         struct isci_phy *iphy = sci_phy_to_iphy(sci_phy);
 629
 630         if (!iphy || !iphy->isci_port || !iphy->isci_port->isci_host)
 631                 return NULL;
 632
 633         return &iphy->isci_port->isci_host->pdev->dev;
 634 }
 635
 636 static inline struct device *sciport_to_dev(struct scic_sds_port *sci_port)
 637 {
 638         struct isci_port *iport = sci_port_to_iport(sci_port);
 639
 640         if (!iport || !iport->isci_host)
 641                 return NULL;
 642
 643         return &iport->isci_host->pdev->dev;
 644 }
 645
 646 static inline struct device *scirdev_to_dev(struct scic_sds_remote_device *sci_dev)
 647 {
 648         struct isci_remote_device *idev =
 649                         container_of(sci_dev, typeof(*idev), sci);
 650
 651         if (!idev || !idev->isci_port || !idev->isci_port->isci_host)
 652                 return NULL;
 653
 654         return &idev->isci_port->isci_host->pdev->dev;
 655 }
 656
 657 enum {
 658         ISCI_SI_REVA0,
 659         ISCI_SI_REVA2,
 660         ISCI_SI_REVB0,
 661         ISCI_SI_REVC0
 662 };
 663
 664 extern int isci_si_rev;
 665
 666 static inline bool is_a0(void)
 667 {
 668         return isci_si_rev == ISCI_SI_REVA0;
 669 }
 670
 671 static inline bool is_a2(void)
 672 {
 673         return isci_si_rev == ISCI_SI_REVA2;
 674 }
 675
 676 static inline bool is_b0(void)
 677 {
 678         return isci_si_rev == ISCI_SI_REVB0;
 679 }
 680
 681 static inline bool is_c0(void)
 682 {
 683         return isci_si_rev > ISCI_SI_REVB0;
 684 }
 685
 686 void scic_sds_controller_post_request(struct scic_sds_controller *scic,
 687                                       u32 request);
 688 void scic_sds_controller_release_frame(struct scic_sds_controller *scic,
 689                                        u32 frame_index);
 690 void scic_sds_controller_copy_sata_response(void *response_buffer,
 691                                             void *frame_header,
 692                                             void *frame_buffer);
 693 enum sci_status scic_sds_controller_allocate_remote_node_context(struct scic_sds_controller *scic,
 694                                                                  struct scic_sds_remote_device *sci_dev,
 695                                                                  u16 *node_id);
 696 void scic_sds_controller_free_remote_node_context(
 697         struct scic_sds_controller *scic,
 698         struct scic_sds_remote_device *sci_dev,
 699         u16 node_id);
 700 union scu_remote_node_context *scic_sds_controller_get_remote_node_context_buffer(
 701         struct scic_sds_controller *scic,
 702         u16 node_id);
 703
 704 struct scic_sds_request *scic_request_by_tag(struct scic_sds_controller *scic,
 705                                              u16 io_tag);
 706
 707 struct scu_task_context *scic_sds_controller_get_task_context_buffer(
 708         struct scic_sds_controller *scic,
 709         u16 io_tag);
 710
 711 void scic_sds_controller_power_control_queue_insert(
 712         struct scic_sds_controller *scic,
 713         struct scic_sds_phy *sci_phy);
 714
 715 void scic_sds_controller_power_control_queue_remove(
 716         struct scic_sds_controller *scic,
 717         struct scic_sds_phy *sci_phy);
 718
 719 void scic_sds_controller_link_up(
 720         struct scic_sds_controller *scic,
 721         struct scic_sds_port *sci_port,
 722         struct scic_sds_phy *sci_phy);
 723
 724 void scic_sds_controller_link_down(
 725         struct scic_sds_controller *scic,
 726         struct scic_sds_port *sci_port,
 727         struct scic_sds_phy *sci_phy);
 728
 729 void scic_sds_controller_remote_device_stopped(
 730         struct scic_sds_controller *scic,
 731         struct scic_sds_remote_device *sci_dev);
 732
 733 void scic_sds_controller_copy_task_context(
 734         struct scic_sds_controller *scic,
 735         struct scic_sds_request *this_request);
 736
 737 void scic_sds_controller_register_setup(struct scic_sds_controller *scic);
 738
 739 enum sci_status scic_controller_continue_io(struct scic_sds_request *sci_req);
 740 int isci_host_scan_finished(struct Scsi_Host *, unsigned long);
 741 void isci_host_scan_start(struct Scsi_Host *);
 742
 743 int isci_host_init(struct isci_host *);
 744
 745 void isci_host_init_controller_names(
 746         struct isci_host *isci_host,
 747         unsigned int controller_idx);
 748
 749 void isci_host_deinit(
 750         struct isci_host *);
 751
 752 void isci_host_port_link_up(
 753         struct isci_host *,
 754         struct scic_sds_port *,
 755         struct scic_sds_phy *);
 756 int isci_host_dev_found(struct domain_device *);
 757
 758 void isci_host_remote_device_start_complete(
 759         struct isci_host *,
 760         struct isci_remote_device *,
 761         enum sci_status);
 762
 763 void scic_controller_disable_interrupts(
 764         struct scic_sds_controller *scic);
 765
 766 enum sci_status scic_controller_start_io(
 767         struct scic_sds_controller *scic,
 768         struct scic_sds_remote_device *remote_device,
 769         struct scic_sds_request *io_request,
 770         u16 io_tag);
 771
 772 enum sci_task_status scic_controller_start_task(
 773         struct scic_sds_controller *scic,
 774         struct scic_sds_remote_device *remote_device,
 775         struct scic_sds_request *task_request,
 776         u16 io_tag);
 777
 778 enum sci_status scic_controller_terminate_request(
 779         struct scic_sds_controller *scic,
 780         struct scic_sds_remote_device *remote_device,
 781         struct scic_sds_request *request);
 782
 783 enum sci_status scic_controller_complete_io(
 784         struct scic_sds_controller *scic,
 785         struct scic_sds_remote_device *remote_device,
 786         struct scic_sds_request *io_request);
 787
 788 u16 scic_controller_allocate_io_tag(
 789         struct scic_sds_controller *scic);
 790
 791 enum sci_status scic_controller_free_io_tag(
 792         struct scic_sds_controller *scic,
 793         u16 io_tag);
 794
 795 void scic_sds_port_configuration_agent_construct(
 796         struct scic_sds_port_configuration_agent *port_agent);
 797
 798 enum sci_status scic_sds_port_configuration_agent_initialize(
 799         struct scic_sds_controller *controller,
 800         struct scic_sds_port_configuration_agent *port_agent);
 801 #endif