1230557Sjimharris/*- 2230557Sjimharris * BSD LICENSE 3230557Sjimharris * 4230557Sjimharris * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. 5230557Sjimharris * All rights reserved. 6230557Sjimharris * 7230557Sjimharris * Redistribution and use in source and binary forms, with or without 8230557Sjimharris * modification, are permitted provided that the following conditions 9230557Sjimharris * are met: 10230557Sjimharris * 11230557Sjimharris * * Redistributions of source code must retain the above copyright 12230557Sjimharris * notice, this list of conditions and the following disclaimer. 13230557Sjimharris * * Redistributions in binary form must reproduce the above copyright 14230557Sjimharris * notice, this list of conditions and the following disclaimer in 15230557Sjimharris * the documentation and/or other materials provided with the 16230557Sjimharris * distribution. 17230557Sjimharris * 18230557Sjimharris * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19230557Sjimharris * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20230557Sjimharris * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21230557Sjimharris * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22230557Sjimharris * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23230557Sjimharris * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24230557Sjimharris * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25230557Sjimharris * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26230557Sjimharris * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27230557Sjimharris * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28230557Sjimharris * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29230557Sjimharris */ 30230557Sjimharris 31230557Sjimharris#include <sys/cdefs.h> 32230557Sjimharris__FBSDID("$FreeBSD$"); 33230557Sjimharris 34230557Sjimharris#include <dev/isci/isci.h> 35230557Sjimharris 36230557Sjimharris#include <sys/conf.h> 37230557Sjimharris#include <sys/malloc.h> 38230557Sjimharris 39233371Sjimharris#include <cam/cam_periph.h> 40233371Sjimharris#include <cam/cam_xpt_periph.h> 41233371Sjimharris 42230557Sjimharris#include <dev/isci/scil/sci_memory_descriptor_list.h> 43230557Sjimharris#include <dev/isci/scil/sci_memory_descriptor_list_decorator.h> 44230557Sjimharris 45230557Sjimharris#include <dev/isci/scil/scif_controller.h> 46230557Sjimharris#include <dev/isci/scil/scif_library.h> 47230557Sjimharris#include <dev/isci/scil/scif_io_request.h> 48230557Sjimharris#include <dev/isci/scil/scif_task_request.h> 49230557Sjimharris#include <dev/isci/scil/scif_remote_device.h> 50230557Sjimharris#include <dev/isci/scil/scif_domain.h> 51230557Sjimharris#include <dev/isci/scil/scif_user_callback.h> 52240965Sjimharris#include <dev/isci/scil/scic_sgpio.h> 53230557Sjimharris 54240965Sjimharris#include <dev/led/led.h> 55240965Sjimharris 56230557Sjimharrisvoid isci_action(struct cam_sim *sim, union ccb *ccb); 57230557Sjimharrisvoid isci_poll(struct cam_sim *sim); 58230557Sjimharris 59230557Sjimharris#define ccb_sim_ptr sim_priv.entries[0].ptr 60230557Sjimharris 61230557Sjimharris/** 62230557Sjimharris * @brief This user callback will inform the user that the controller has 63230557Sjimharris * had a serious unexpected error. The user should not the error, 64230557Sjimharris * disable interrupts, and wait for current ongoing processing to 65230557Sjimharris * complete. Subsequently, the user should reset the controller. 66230557Sjimharris * 67230557Sjimharris * @param[in] controller This parameter specifies the controller that had 68230557Sjimharris * an error. 69230557Sjimharris * 70230557Sjimharris * @return none 71230557Sjimharris */ 72230557Sjimharrisvoid scif_cb_controller_error(SCI_CONTROLLER_HANDLE_T controller, 73230557Sjimharris SCI_CONTROLLER_ERROR error) 74230557Sjimharris{ 75230557Sjimharris 76230557Sjimharris isci_log_message(0, "ISCI", "scif_cb_controller_error: 0x%x\n", 77230557Sjimharris error); 78230557Sjimharris} 79230557Sjimharris 80230557Sjimharris/** 81230557Sjimharris * @brief This user callback will inform the user that the controller has 82230557Sjimharris * finished the start process. 83230557Sjimharris * 84230557Sjimharris * @param[in] controller This parameter specifies the controller that was 85230557Sjimharris * started. 86230557Sjimharris * @param[in] completion_status This parameter specifies the results of 87230557Sjimharris * the start operation. SCI_SUCCESS indicates successful 88230557Sjimharris * completion. 89230557Sjimharris * 90230557Sjimharris * @return none 91230557Sjimharris */ 92230557Sjimharrisvoid scif_cb_controller_start_complete(SCI_CONTROLLER_HANDLE_T controller, 93230557Sjimharris SCI_STATUS completion_status) 94230557Sjimharris{ 95230557Sjimharris uint32_t index; 96230557Sjimharris struct ISCI_CONTROLLER *isci_controller = (struct ISCI_CONTROLLER *) 97230557Sjimharris sci_object_get_association(controller); 98230557Sjimharris 99230557Sjimharris isci_controller->is_started = TRUE; 100230557Sjimharris 101230557Sjimharris /* Set bits for all domains. We will clear them one-by-one once 102230557Sjimharris * the domains complete discovery, or return error when calling 103230557Sjimharris * scif_domain_discover. Once all bits are clear, we will register 104230557Sjimharris * the controller with CAM. 105230557Sjimharris */ 106230557Sjimharris isci_controller->initial_discovery_mask = (1 << SCI_MAX_DOMAINS) - 1; 107230557Sjimharris 108230557Sjimharris for(index = 0; index < SCI_MAX_DOMAINS; index++) { 109230557Sjimharris SCI_STATUS status; 110230557Sjimharris SCI_DOMAIN_HANDLE_T domain = 111230557Sjimharris isci_controller->domain[index].sci_object; 112230557Sjimharris 113230557Sjimharris status = scif_domain_discover( 114230557Sjimharris domain, 115230557Sjimharris scif_domain_get_suggested_discover_timeout(domain), 116230557Sjimharris DEVICE_TIMEOUT 117230557Sjimharris ); 118230557Sjimharris 119230557Sjimharris if (status != SCI_SUCCESS) 120230557Sjimharris { 121230557Sjimharris isci_controller_domain_discovery_complete( 122230557Sjimharris isci_controller, &isci_controller->domain[index]); 123230557Sjimharris } 124230557Sjimharris } 125230557Sjimharris} 126230557Sjimharris 127230557Sjimharris/** 128230557Sjimharris * @brief This user callback will inform the user that the controller has 129230557Sjimharris * finished the stop process. Note, after user calls 130230557Sjimharris * scif_controller_stop(), before user receives this controller stop 131230557Sjimharris * complete callback, user should not expect any callback from 132230557Sjimharris * framework, such like scif_cb_domain_change_notification(). 133230557Sjimharris * 134230557Sjimharris * @param[in] controller This parameter specifies the controller that was 135230557Sjimharris * stopped. 136230557Sjimharris * @param[in] completion_status This parameter specifies the results of 137230557Sjimharris * the stop operation. SCI_SUCCESS indicates successful 138230557Sjimharris * completion. 139230557Sjimharris * 140230557Sjimharris * @return none 141230557Sjimharris */ 142230557Sjimharrisvoid scif_cb_controller_stop_complete(SCI_CONTROLLER_HANDLE_T controller, 143230557Sjimharris SCI_STATUS completion_status) 144230557Sjimharris{ 145230557Sjimharris struct ISCI_CONTROLLER *isci_controller = (struct ISCI_CONTROLLER *) 146230557Sjimharris sci_object_get_association(controller); 147230557Sjimharris 148230557Sjimharris isci_controller->is_started = FALSE; 149230557Sjimharris} 150230557Sjimharris 151239545Sjimharrisstatic void 152239545Sjimharrisisci_single_map(void *arg, bus_dma_segment_t *seg, int nseg, int error) 153239545Sjimharris{ 154239545Sjimharris SCI_PHYSICAL_ADDRESS *phys_addr = arg; 155239545Sjimharris 156239545Sjimharris *phys_addr = seg[0].ds_addr; 157239545Sjimharris} 158239545Sjimharris 159230557Sjimharris/** 160230557Sjimharris * @brief This method will be invoked to allocate memory dynamically. 161230557Sjimharris * 162230557Sjimharris * @param[in] controller This parameter represents the controller 163230557Sjimharris * object for which to allocate memory. 164230557Sjimharris * @param[out] mde This parameter represents the memory descriptor to 165230557Sjimharris * be filled in by the user that will reference the newly 166230557Sjimharris * allocated memory. 167230557Sjimharris * 168230557Sjimharris * @return none 169230557Sjimharris */ 170230557Sjimharrisvoid scif_cb_controller_allocate_memory(SCI_CONTROLLER_HANDLE_T controller, 171230557Sjimharris SCI_PHYSICAL_MEMORY_DESCRIPTOR_T *mde) 172230557Sjimharris{ 173239545Sjimharris struct ISCI_CONTROLLER *isci_controller = (struct ISCI_CONTROLLER *) 174239545Sjimharris sci_object_get_association(controller); 175230557Sjimharris 176239545Sjimharris /* 177239545Sjimharris * Note this routine is only used for buffers needed to translate 178239545Sjimharris * SCSI UNMAP commands to ATA DSM commands for SATA disks. 179239545Sjimharris * 180239545Sjimharris * We first try to pull a buffer from the controller's pool, and only 181239545Sjimharris * call contigmalloc if one isn't there. 182239545Sjimharris */ 183239545Sjimharris if (!sci_pool_empty(isci_controller->unmap_buffer_pool)) { 184239545Sjimharris sci_pool_get(isci_controller->unmap_buffer_pool, 185239545Sjimharris mde->virtual_address); 186239545Sjimharris } else 187239545Sjimharris mde->virtual_address = contigmalloc(PAGE_SIZE, 188239545Sjimharris M_ISCI, M_NOWAIT, 0, BUS_SPACE_MAXADDR, 189239545Sjimharris mde->constant_memory_alignment, 0); 190239545Sjimharris 191239545Sjimharris if (mde->virtual_address != NULL) 192239545Sjimharris bus_dmamap_load(isci_controller->buffer_dma_tag, 193239545Sjimharris NULL, mde->virtual_address, PAGE_SIZE, 194239545Sjimharris isci_single_map, &mde->physical_address, 195239545Sjimharris BUS_DMA_NOWAIT); 196230557Sjimharris} 197230557Sjimharris 198230557Sjimharris/** 199230557Sjimharris * @brief This method will be invoked to allocate memory dynamically. 200230557Sjimharris * 201230557Sjimharris * @param[in] controller This parameter represents the controller 202230557Sjimharris * object for which to allocate memory. 203230557Sjimharris * @param[out] mde This parameter represents the memory descriptor to 204230557Sjimharris * be filled in by the user that will reference the newly 205230557Sjimharris * allocated memory. 206230557Sjimharris * 207230557Sjimharris * @return none 208230557Sjimharris */ 209230557Sjimharrisvoid scif_cb_controller_free_memory(SCI_CONTROLLER_HANDLE_T controller, 210230557Sjimharris SCI_PHYSICAL_MEMORY_DESCRIPTOR_T * mde) 211230557Sjimharris{ 212239545Sjimharris struct ISCI_CONTROLLER *isci_controller = (struct ISCI_CONTROLLER *) 213239545Sjimharris sci_object_get_association(controller); 214230557Sjimharris 215239545Sjimharris /* 216239545Sjimharris * Put the buffer back into the controller's buffer pool, rather 217239545Sjimharris * than invoking configfree. This helps reduce chance we won't 218239545Sjimharris * have buffers available when system is under memory pressure. 219239545Sjimharris */ 220239545Sjimharris sci_pool_put(isci_controller->unmap_buffer_pool, 221239545Sjimharris mde->virtual_address); 222230557Sjimharris} 223230557Sjimharris 224230557Sjimharrisvoid isci_controller_construct(struct ISCI_CONTROLLER *controller, 225230557Sjimharris struct isci_softc *isci) 226230557Sjimharris{ 227230557Sjimharris SCI_CONTROLLER_HANDLE_T scif_controller_handle; 228230557Sjimharris 229230557Sjimharris scif_library_allocate_controller(isci->sci_library_handle, 230230557Sjimharris &scif_controller_handle); 231230557Sjimharris 232230557Sjimharris scif_controller_construct(isci->sci_library_handle, 233230557Sjimharris scif_controller_handle, NULL); 234230557Sjimharris 235230557Sjimharris controller->isci = isci; 236230557Sjimharris controller->scif_controller_handle = scif_controller_handle; 237230557Sjimharris 238230557Sjimharris /* This allows us to later use 239230557Sjimharris * sci_object_get_association(scif_controller_handle) 240230557Sjimharris * inside of a callback routine to get our struct ISCI_CONTROLLER object 241230557Sjimharris */ 242230557Sjimharris sci_object_set_association(scif_controller_handle, (void *)controller); 243230557Sjimharris 244230557Sjimharris controller->is_started = FALSE; 245230557Sjimharris controller->is_frozen = FALSE; 246235751Sjimharris controller->release_queued_ccbs = FALSE; 247230557Sjimharris controller->sim = NULL; 248230557Sjimharris controller->initial_discovery_mask = 0; 249230557Sjimharris 250230557Sjimharris sci_fast_list_init(&controller->pending_device_reset_list); 251230557Sjimharris 252230557Sjimharris mtx_init(&controller->lock, "isci", NULL, MTX_DEF); 253230557Sjimharris 254230557Sjimharris uint32_t domain_index; 255230557Sjimharris 256230557Sjimharris for(domain_index = 0; domain_index < SCI_MAX_DOMAINS; domain_index++) { 257230557Sjimharris isci_domain_construct( &controller->domain[domain_index], 258230557Sjimharris domain_index, controller); 259230557Sjimharris } 260230557Sjimharris 261230557Sjimharris controller->timer_memory = malloc( 262230557Sjimharris sizeof(struct ISCI_TIMER) * SCI_MAX_TIMERS, M_ISCI, 263230557Sjimharris M_NOWAIT | M_ZERO); 264230557Sjimharris 265230557Sjimharris sci_pool_initialize(controller->timer_pool); 266230557Sjimharris 267230557Sjimharris struct ISCI_TIMER *timer = (struct ISCI_TIMER *) 268230557Sjimharris controller->timer_memory; 269230557Sjimharris 270230557Sjimharris for ( int i = 0; i < SCI_MAX_TIMERS; i++ ) { 271230557Sjimharris sci_pool_put(controller->timer_pool, timer++); 272230557Sjimharris } 273239545Sjimharris 274239545Sjimharris sci_pool_initialize(controller->unmap_buffer_pool); 275230557Sjimharris} 276230557Sjimharris 277241403Sjimharrisstatic void isci_led_fault_func(void *priv, int onoff) 278240965Sjimharris{ 279241403Sjimharris struct ISCI_PHY *phy = priv; 280240965Sjimharris 281241403Sjimharris /* map onoff to the fault LED */ 282241403Sjimharris phy->led_fault = onoff; 283241403Sjimharris scic_sgpio_update_led_state(phy->handle, 1 << phy->index, 284241403Sjimharris phy->led_fault, phy->led_locate, 0); 285241403Sjimharris} 286241403Sjimharris 287241403Sjimharrisstatic void isci_led_locate_func(void *priv, int onoff) 288241403Sjimharris{ 289241403Sjimharris struct ISCI_PHY *phy = priv; 290241403Sjimharris 291240965Sjimharris /* map onoff to the locate LED */ 292241403Sjimharris phy->led_locate = onoff; 293241403Sjimharris scic_sgpio_update_led_state(phy->handle, 1 << phy->index, 294241403Sjimharris phy->led_fault, phy->led_locate, 0); 295240965Sjimharris} 296240965Sjimharris 297230557SjimharrisSCI_STATUS isci_controller_initialize(struct ISCI_CONTROLLER *controller) 298230557Sjimharris{ 299230557Sjimharris SCIC_USER_PARAMETERS_T scic_user_parameters; 300230557Sjimharris SCI_CONTROLLER_HANDLE_T scic_controller_handle; 301240965Sjimharris char led_name[64]; 302230557Sjimharris unsigned long tunable; 303230557Sjimharris int i; 304230557Sjimharris 305230557Sjimharris scic_controller_handle = 306230557Sjimharris scif_controller_get_scic_handle(controller->scif_controller_handle); 307230557Sjimharris 308230557Sjimharris if (controller->isci->oem_parameters_found == TRUE) 309230557Sjimharris { 310230557Sjimharris scic_oem_parameters_set( 311230557Sjimharris scic_controller_handle, 312230557Sjimharris &controller->oem_parameters, 313230557Sjimharris (uint8_t)(controller->oem_parameters_version)); 314230557Sjimharris } 315230557Sjimharris 316230557Sjimharris scic_user_parameters_get(scic_controller_handle, &scic_user_parameters); 317230557Sjimharris 318230557Sjimharris if (TUNABLE_ULONG_FETCH("hw.isci.no_outbound_task_timeout", &tunable)) 319230557Sjimharris scic_user_parameters.sds1.no_outbound_task_timeout = 320230557Sjimharris (uint8_t)tunable; 321230557Sjimharris 322230557Sjimharris if (TUNABLE_ULONG_FETCH("hw.isci.ssp_max_occupancy_timeout", &tunable)) 323230557Sjimharris scic_user_parameters.sds1.ssp_max_occupancy_timeout = 324230557Sjimharris (uint16_t)tunable; 325230557Sjimharris 326230557Sjimharris if (TUNABLE_ULONG_FETCH("hw.isci.stp_max_occupancy_timeout", &tunable)) 327230557Sjimharris scic_user_parameters.sds1.stp_max_occupancy_timeout = 328230557Sjimharris (uint16_t)tunable; 329230557Sjimharris 330230557Sjimharris if (TUNABLE_ULONG_FETCH("hw.isci.ssp_inactivity_timeout", &tunable)) 331230557Sjimharris scic_user_parameters.sds1.ssp_inactivity_timeout = 332230557Sjimharris (uint16_t)tunable; 333230557Sjimharris 334230557Sjimharris if (TUNABLE_ULONG_FETCH("hw.isci.stp_inactivity_timeout", &tunable)) 335230557Sjimharris scic_user_parameters.sds1.stp_inactivity_timeout = 336230557Sjimharris (uint16_t)tunable; 337230557Sjimharris 338230557Sjimharris if (TUNABLE_ULONG_FETCH("hw.isci.max_speed_generation", &tunable)) 339230557Sjimharris for (i = 0; i < SCI_MAX_PHYS; i++) 340230557Sjimharris scic_user_parameters.sds1.phys[i].max_speed_generation = 341230557Sjimharris (uint8_t)tunable; 342230557Sjimharris 343230557Sjimharris scic_user_parameters_set(scic_controller_handle, &scic_user_parameters); 344230557Sjimharris 345230557Sjimharris /* Scheduler bug in SCU requires SCIL to reserve some task contexts as a 346230557Sjimharris * a workaround - one per domain. 347230557Sjimharris */ 348230557Sjimharris controller->queue_depth = SCI_MAX_IO_REQUESTS - SCI_MAX_DOMAINS; 349230557Sjimharris 350230557Sjimharris if (TUNABLE_INT_FETCH("hw.isci.controller_queue_depth", 351230557Sjimharris &controller->queue_depth)) { 352230557Sjimharris controller->queue_depth = max(1, min(controller->queue_depth, 353230557Sjimharris SCI_MAX_IO_REQUESTS - SCI_MAX_DOMAINS)); 354230557Sjimharris } 355230557Sjimharris 356230557Sjimharris /* Reserve one request so that we can ensure we have one available TC 357230557Sjimharris * to do internal device resets. 358230557Sjimharris */ 359230557Sjimharris controller->sim_queue_depth = controller->queue_depth - 1; 360230557Sjimharris 361230557Sjimharris /* Although we save one TC to do internal device resets, it is possible 362230557Sjimharris * we could end up using several TCs for simultaneous device resets 363230557Sjimharris * while at the same time having CAM fill our controller queue. To 364230557Sjimharris * simulate this condition, and how our driver handles it, we can set 365230557Sjimharris * this io_shortage parameter, which will tell CAM that we have a 366230557Sjimharris * large queue depth than we really do. 367230557Sjimharris */ 368230557Sjimharris uint32_t io_shortage = 0; 369230557Sjimharris TUNABLE_INT_FETCH("hw.isci.io_shortage", &io_shortage); 370230557Sjimharris controller->sim_queue_depth += io_shortage; 371230557Sjimharris 372233371Sjimharris /* Attach to CAM using xpt_bus_register now, then immediately freeze 373233371Sjimharris * the simq. It will get released later when initial domain discovery 374233371Sjimharris * is complete. 375233371Sjimharris */ 376233371Sjimharris controller->has_been_scanned = FALSE; 377233371Sjimharris mtx_lock(&controller->lock); 378233371Sjimharris isci_controller_attach_to_cam(controller); 379233371Sjimharris xpt_freeze_simq(controller->sim, 1); 380233371Sjimharris mtx_unlock(&controller->lock); 381233371Sjimharris 382240965Sjimharris for (i = 0; i < SCI_MAX_PHYS; i++) { 383241403Sjimharris controller->phys[i].handle = scic_controller_handle; 384241403Sjimharris controller->phys[i].index = i; 385241403Sjimharris 386241403Sjimharris /* fault */ 387241403Sjimharris controller->phys[i].led_fault = 0; 388241403Sjimharris sprintf(led_name, "isci.bus%d.port%d.fault", controller->index, i); 389241403Sjimharris controller->phys[i].cdev_fault = led_create(isci_led_fault_func, 390241403Sjimharris &controller->phys[i], led_name); 391241403Sjimharris 392241403Sjimharris /* locate */ 393241403Sjimharris controller->phys[i].led_locate = 0; 394241403Sjimharris sprintf(led_name, "isci.bus%d.port%d.locate", controller->index, i); 395241403Sjimharris controller->phys[i].cdev_locate = led_create(isci_led_locate_func, 396241403Sjimharris &controller->phys[i], led_name); 397240965Sjimharris } 398240965Sjimharris 399230557Sjimharris return (scif_controller_initialize(controller->scif_controller_handle)); 400230557Sjimharris} 401230557Sjimharris 402230557Sjimharrisint isci_controller_allocate_memory(struct ISCI_CONTROLLER *controller) 403230557Sjimharris{ 404230557Sjimharris int error; 405230557Sjimharris device_t device = controller->isci->device; 406230557Sjimharris uint32_t max_segment_size = isci_io_request_get_max_io_size(); 407230557Sjimharris uint32_t status = 0; 408230557Sjimharris struct ISCI_MEMORY *uncached_controller_memory = 409230557Sjimharris &controller->uncached_controller_memory; 410230557Sjimharris struct ISCI_MEMORY *cached_controller_memory = 411230557Sjimharris &controller->cached_controller_memory; 412230557Sjimharris struct ISCI_MEMORY *request_memory = 413230557Sjimharris &controller->request_memory; 414230557Sjimharris POINTER_UINT virtual_address; 415230557Sjimharris bus_addr_t physical_address; 416230557Sjimharris 417230557Sjimharris controller->mdl = sci_controller_get_memory_descriptor_list_handle( 418230557Sjimharris controller->scif_controller_handle); 419230557Sjimharris 420230557Sjimharris uncached_controller_memory->size = sci_mdl_decorator_get_memory_size( 421230557Sjimharris controller->mdl, SCI_MDE_ATTRIBUTE_PHYSICALLY_CONTIGUOUS); 422230557Sjimharris 423230557Sjimharris error = isci_allocate_dma_buffer(device, uncached_controller_memory); 424230557Sjimharris 425230557Sjimharris if (error != 0) 426230557Sjimharris return (error); 427230557Sjimharris 428230557Sjimharris sci_mdl_decorator_assign_memory( controller->mdl, 429230557Sjimharris SCI_MDE_ATTRIBUTE_PHYSICALLY_CONTIGUOUS, 430230557Sjimharris uncached_controller_memory->virtual_address, 431230557Sjimharris uncached_controller_memory->physical_address); 432230557Sjimharris 433230557Sjimharris cached_controller_memory->size = sci_mdl_decorator_get_memory_size( 434230557Sjimharris controller->mdl, 435230557Sjimharris SCI_MDE_ATTRIBUTE_CACHEABLE | SCI_MDE_ATTRIBUTE_PHYSICALLY_CONTIGUOUS 436230557Sjimharris ); 437230557Sjimharris 438230557Sjimharris error = isci_allocate_dma_buffer(device, cached_controller_memory); 439230557Sjimharris 440230557Sjimharris if (error != 0) 441230557Sjimharris return (error); 442230557Sjimharris 443230557Sjimharris sci_mdl_decorator_assign_memory(controller->mdl, 444230557Sjimharris SCI_MDE_ATTRIBUTE_CACHEABLE | SCI_MDE_ATTRIBUTE_PHYSICALLY_CONTIGUOUS, 445230557Sjimharris cached_controller_memory->virtual_address, 446230557Sjimharris cached_controller_memory->physical_address); 447230557Sjimharris 448230557Sjimharris request_memory->size = 449230557Sjimharris controller->queue_depth * isci_io_request_get_object_size(); 450230557Sjimharris 451230557Sjimharris error = isci_allocate_dma_buffer(device, request_memory); 452230557Sjimharris 453230557Sjimharris if (error != 0) 454230557Sjimharris return (error); 455230557Sjimharris 456230557Sjimharris /* For STP PIO testing, we want to ensure we can force multiple SGLs 457230557Sjimharris * since this has been a problem area in SCIL. This tunable parameter 458230557Sjimharris * will allow us to force DMA segments to a smaller size, ensuring 459230557Sjimharris * that even if a physically contiguous buffer is attached to this 460230557Sjimharris * I/O, the DMA subsystem will pass us multiple segments in our DMA 461230557Sjimharris * load callback. 462230557Sjimharris */ 463230557Sjimharris TUNABLE_INT_FETCH("hw.isci.max_segment_size", &max_segment_size); 464230557Sjimharris 465230557Sjimharris /* Create DMA tag for our I/O requests. Then we can create DMA maps based off 466230557Sjimharris * of this tag and store them in each of our ISCI_IO_REQUEST objects. This 467230557Sjimharris * will enable better performance than creating the DMA maps everytime we get 468230557Sjimharris * an I/O. 469230557Sjimharris */ 470230557Sjimharris status = bus_dma_tag_create(bus_get_dma_tag(device), 0x1, 0x0, 471230557Sjimharris BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR, NULL, NULL, 472230557Sjimharris isci_io_request_get_max_io_size(), 473230557Sjimharris SCI_MAX_SCATTER_GATHER_ELEMENTS, max_segment_size, 0, NULL, NULL, 474230557Sjimharris &controller->buffer_dma_tag); 475230557Sjimharris 476230557Sjimharris sci_pool_initialize(controller->request_pool); 477230557Sjimharris 478230557Sjimharris virtual_address = request_memory->virtual_address; 479230557Sjimharris physical_address = request_memory->physical_address; 480230557Sjimharris 481230557Sjimharris for (int i = 0; i < controller->queue_depth; i++) { 482230557Sjimharris struct ISCI_REQUEST *request = 483230557Sjimharris (struct ISCI_REQUEST *)virtual_address; 484230557Sjimharris 485230557Sjimharris isci_request_construct(request, 486230557Sjimharris controller->scif_controller_handle, 487230557Sjimharris controller->buffer_dma_tag, physical_address); 488230557Sjimharris 489230557Sjimharris sci_pool_put(controller->request_pool, request); 490230557Sjimharris 491230557Sjimharris virtual_address += isci_request_get_object_size(); 492230557Sjimharris physical_address += isci_request_get_object_size(); 493230557Sjimharris } 494230557Sjimharris 495230557Sjimharris uint32_t remote_device_size = sizeof(struct ISCI_REMOTE_DEVICE) + 496230557Sjimharris scif_remote_device_get_object_size(); 497230557Sjimharris 498230557Sjimharris controller->remote_device_memory = (uint8_t *) malloc( 499230557Sjimharris remote_device_size * SCI_MAX_REMOTE_DEVICES, M_ISCI, 500230557Sjimharris M_NOWAIT | M_ZERO); 501230557Sjimharris 502230557Sjimharris sci_pool_initialize(controller->remote_device_pool); 503230557Sjimharris 504230557Sjimharris uint8_t *remote_device_memory_ptr = controller->remote_device_memory; 505230557Sjimharris 506230557Sjimharris for (int i = 0; i < SCI_MAX_REMOTE_DEVICES; i++) { 507230557Sjimharris struct ISCI_REMOTE_DEVICE *remote_device = 508230557Sjimharris (struct ISCI_REMOTE_DEVICE *)remote_device_memory_ptr; 509230557Sjimharris 510230557Sjimharris controller->remote_device[i] = NULL; 511230557Sjimharris remote_device->index = i; 512230557Sjimharris remote_device->is_resetting = FALSE; 513230557Sjimharris remote_device->frozen_lun_mask = 0; 514230557Sjimharris sci_fast_list_element_init(remote_device, 515230557Sjimharris &remote_device->pending_device_reset_element); 516234106Sjimharris TAILQ_INIT(&remote_device->queued_ccbs); 517235751Sjimharris remote_device->release_queued_ccb = FALSE; 518235751Sjimharris remote_device->queued_ccb_in_progress = NULL; 519233622Sjimharris 520233622Sjimharris /* 521233622Sjimharris * For the first SCI_MAX_DOMAINS device objects, do not put 522233622Sjimharris * them in the pool, rather assign them to each domain. This 523233622Sjimharris * ensures that any device attached directly to port "i" will 524233622Sjimharris * always get CAM target id "i". 525233622Sjimharris */ 526233622Sjimharris if (i < SCI_MAX_DOMAINS) 527233622Sjimharris controller->domain[i].da_remote_device = remote_device; 528233622Sjimharris else 529233622Sjimharris sci_pool_put(controller->remote_device_pool, 530233622Sjimharris remote_device); 531230557Sjimharris remote_device_memory_ptr += remote_device_size; 532230557Sjimharris } 533230557Sjimharris 534230557Sjimharris return (0); 535230557Sjimharris} 536230557Sjimharris 537230557Sjimharrisvoid isci_controller_start(void *controller_handle) 538230557Sjimharris{ 539230557Sjimharris struct ISCI_CONTROLLER *controller = 540230557Sjimharris (struct ISCI_CONTROLLER *)controller_handle; 541230557Sjimharris SCI_CONTROLLER_HANDLE_T scif_controller_handle = 542230557Sjimharris controller->scif_controller_handle; 543230557Sjimharris 544230557Sjimharris scif_controller_start(scif_controller_handle, 545230557Sjimharris scif_controller_get_suggested_start_timeout(scif_controller_handle)); 546230557Sjimharris 547230557Sjimharris scic_controller_enable_interrupts( 548230557Sjimharris scif_controller_get_scic_handle(controller->scif_controller_handle)); 549230557Sjimharris} 550230557Sjimharris 551230557Sjimharrisvoid isci_controller_domain_discovery_complete( 552230557Sjimharris struct ISCI_CONTROLLER *isci_controller, struct ISCI_DOMAIN *isci_domain) 553230557Sjimharris{ 554233371Sjimharris if (!isci_controller->has_been_scanned) 555230557Sjimharris { 556233371Sjimharris /* Controller has not been scanned yet. We'll clear 557230557Sjimharris * the discovery bit for this domain, then check if all bits 558230557Sjimharris * are now clear. That would indicate that all domains are 559233371Sjimharris * done with discovery and we can then proceed with initial 560233371Sjimharris * scan. 561230557Sjimharris */ 562230557Sjimharris 563230557Sjimharris isci_controller->initial_discovery_mask &= 564230557Sjimharris ~(1 << isci_domain->index); 565230557Sjimharris 566230557Sjimharris if (isci_controller->initial_discovery_mask == 0) { 567230557Sjimharris struct isci_softc *driver = isci_controller->isci; 568230557Sjimharris uint8_t next_index = isci_controller->index + 1; 569230557Sjimharris 570233371Sjimharris isci_controller->has_been_scanned = TRUE; 571230557Sjimharris 572233371Sjimharris /* Unfreeze simq to allow initial scan to proceed. */ 573233371Sjimharris xpt_release_simq(isci_controller->sim, TRUE); 574233371Sjimharris 575233371Sjimharris#if __FreeBSD_version < 800000 576233371Sjimharris /* When driver is loaded after boot, we need to 577233371Sjimharris * explicitly rescan here for versions <8.0, because 578233371Sjimharris * CAM only automatically scans new buses at boot 579233371Sjimharris * time. 580233371Sjimharris */ 581233371Sjimharris union ccb *ccb = xpt_alloc_ccb_nowait(); 582233371Sjimharris 583249468Smav xpt_create_path(&ccb->ccb_h.path, NULL, 584233371Sjimharris cam_sim_path(isci_controller->sim), 585233371Sjimharris CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD); 586233371Sjimharris 587233371Sjimharris xpt_rescan(ccb); 588233371Sjimharris#endif 589233371Sjimharris 590230557Sjimharris if (next_index < driver->controller_count) { 591230557Sjimharris /* There are more controllers that need to 592230557Sjimharris * start. So start the next one. 593230557Sjimharris */ 594230557Sjimharris isci_controller_start( 595230557Sjimharris &driver->controllers[next_index]); 596230557Sjimharris } 597230557Sjimharris else 598230557Sjimharris { 599230557Sjimharris /* All controllers have been started and completed discovery. 600230557Sjimharris * Disestablish the config hook while will signal to the 601230557Sjimharris * kernel during boot that it is safe to try to find and 602230557Sjimharris * mount the root partition. 603230557Sjimharris */ 604230557Sjimharris config_intrhook_disestablish( 605230557Sjimharris &driver->config_hook); 606230557Sjimharris } 607230557Sjimharris } 608230557Sjimharris } 609230557Sjimharris} 610230557Sjimharris 611230557Sjimharrisint isci_controller_attach_to_cam(struct ISCI_CONTROLLER *controller) 612230557Sjimharris{ 613230557Sjimharris struct isci_softc *isci = controller->isci; 614230557Sjimharris device_t parent = device_get_parent(isci->device); 615230557Sjimharris int unit = device_get_unit(isci->device); 616230557Sjimharris struct cam_devq *isci_devq = cam_simq_alloc(controller->sim_queue_depth); 617230557Sjimharris 618230557Sjimharris if(isci_devq == NULL) { 619230557Sjimharris isci_log_message(0, "ISCI", "isci_devq is NULL \n"); 620230557Sjimharris return (-1); 621230557Sjimharris } 622230557Sjimharris 623230557Sjimharris controller->sim = cam_sim_alloc(isci_action, isci_poll, "isci", 624230557Sjimharris controller, unit, &controller->lock, controller->sim_queue_depth, 625230557Sjimharris controller->sim_queue_depth, isci_devq); 626230557Sjimharris 627230557Sjimharris if(controller->sim == NULL) { 628230557Sjimharris isci_log_message(0, "ISCI", "cam_sim_alloc... fails\n"); 629230557Sjimharris cam_simq_free(isci_devq); 630230557Sjimharris return (-1); 631230557Sjimharris } 632230557Sjimharris 633230557Sjimharris if(xpt_bus_register(controller->sim, parent, controller->index) 634230557Sjimharris != CAM_SUCCESS) { 635230557Sjimharris isci_log_message(0, "ISCI", "xpt_bus_register...fails \n"); 636230557Sjimharris cam_sim_free(controller->sim, TRUE); 637230557Sjimharris mtx_unlock(&controller->lock); 638230557Sjimharris return (-1); 639230557Sjimharris } 640230557Sjimharris 641230557Sjimharris if(xpt_create_path(&controller->path, NULL, 642230557Sjimharris cam_sim_path(controller->sim), CAM_TARGET_WILDCARD, 643230557Sjimharris CAM_LUN_WILDCARD) != CAM_REQ_CMP) { 644230557Sjimharris isci_log_message(0, "ISCI", "xpt_create_path....fails\n"); 645230557Sjimharris xpt_bus_deregister(cam_sim_path(controller->sim)); 646230557Sjimharris cam_sim_free(controller->sim, TRUE); 647230557Sjimharris mtx_unlock(&controller->lock); 648230557Sjimharris return (-1); 649230557Sjimharris } 650230557Sjimharris 651230557Sjimharris return (0); 652230557Sjimharris} 653230557Sjimharris 654230557Sjimharrisvoid isci_poll(struct cam_sim *sim) 655230557Sjimharris{ 656230557Sjimharris struct ISCI_CONTROLLER *controller = 657230557Sjimharris (struct ISCI_CONTROLLER *)cam_sim_softc(sim); 658230557Sjimharris 659230557Sjimharris isci_interrupt_poll_handler(controller); 660230557Sjimharris} 661230557Sjimharris 662230557Sjimharrisvoid isci_action(struct cam_sim *sim, union ccb *ccb) 663230557Sjimharris{ 664230557Sjimharris struct ISCI_CONTROLLER *controller = 665230557Sjimharris (struct ISCI_CONTROLLER *)cam_sim_softc(sim); 666230557Sjimharris 667230557Sjimharris switch ( ccb->ccb_h.func_code ) { 668230557Sjimharris case XPT_PATH_INQ: 669230557Sjimharris { 670230557Sjimharris struct ccb_pathinq *cpi = &ccb->cpi; 671230557Sjimharris int bus = cam_sim_bus(sim); 672230557Sjimharris ccb->ccb_h.ccb_sim_ptr = sim; 673230557Sjimharris cpi->version_num = 1; 674230557Sjimharris cpi->hba_inquiry = PI_TAG_ABLE; 675230557Sjimharris cpi->target_sprt = 0; 676248775Sjimharris cpi->hba_misc = PIM_NOBUSRESET | PIM_SEQSCAN | 677248775Sjimharris PIM_UNMAPPED; 678230557Sjimharris cpi->hba_eng_cnt = 0; 679230557Sjimharris cpi->max_target = SCI_MAX_REMOTE_DEVICES - 1; 680230557Sjimharris cpi->max_lun = ISCI_MAX_LUN; 681231860Ssbruno#if __FreeBSD_version >= 800102 682230557Sjimharris cpi->maxio = isci_io_request_get_max_io_size(); 683230557Sjimharris#endif 684230557Sjimharris cpi->unit_number = cam_sim_unit(sim); 685230557Sjimharris cpi->bus_id = bus; 686230557Sjimharris cpi->initiator_id = SCI_MAX_REMOTE_DEVICES; 687230557Sjimharris cpi->base_transfer_speed = 300000; 688230557Sjimharris strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); 689230557Sjimharris strncpy(cpi->hba_vid, "Intel Corp.", HBA_IDLEN); 690230557Sjimharris strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); 691230557Sjimharris cpi->transport = XPORT_SAS; 692230557Sjimharris cpi->transport_version = 0; 693230557Sjimharris cpi->protocol = PROTO_SCSI; 694230557Sjimharris cpi->protocol_version = SCSI_REV_SPC2; 695230557Sjimharris cpi->ccb_h.status = CAM_REQ_CMP; 696230557Sjimharris xpt_done(ccb); 697230557Sjimharris } 698230557Sjimharris break; 699230557Sjimharris case XPT_GET_TRAN_SETTINGS: 700230557Sjimharris { 701230557Sjimharris struct ccb_trans_settings *general_settings = &ccb->cts; 702230557Sjimharris struct ccb_trans_settings_sas *sas_settings = 703230557Sjimharris &general_settings->xport_specific.sas; 704230557Sjimharris struct ccb_trans_settings_scsi *scsi_settings = 705230557Sjimharris &general_settings->proto_specific.scsi; 706230557Sjimharris struct ISCI_REMOTE_DEVICE *remote_device; 707230557Sjimharris 708230557Sjimharris remote_device = controller->remote_device[ccb->ccb_h.target_id]; 709230557Sjimharris 710230557Sjimharris if (remote_device == NULL) { 711230557Sjimharris ccb->ccb_h.status &= ~CAM_SIM_QUEUED; 712230557Sjimharris ccb->ccb_h.status &= ~CAM_STATUS_MASK; 713230557Sjimharris ccb->ccb_h.status |= CAM_DEV_NOT_THERE; 714230557Sjimharris xpt_done(ccb); 715230557Sjimharris break; 716230557Sjimharris } 717230557Sjimharris 718230557Sjimharris general_settings->protocol = PROTO_SCSI; 719230557Sjimharris general_settings->transport = XPORT_SAS; 720230557Sjimharris general_settings->protocol_version = SCSI_REV_SPC2; 721230557Sjimharris general_settings->transport_version = 0; 722230557Sjimharris scsi_settings->valid = CTS_SCSI_VALID_TQ; 723230557Sjimharris scsi_settings->flags = CTS_SCSI_FLAGS_TAG_ENB; 724230557Sjimharris ccb->ccb_h.status &= ~CAM_STATUS_MASK; 725230557Sjimharris ccb->ccb_h.status |= CAM_REQ_CMP; 726230557Sjimharris 727230557Sjimharris sas_settings->bitrate = 728230557Sjimharris isci_remote_device_get_bitrate(remote_device); 729230557Sjimharris 730230557Sjimharris if (sas_settings->bitrate != 0) 731230557Sjimharris sas_settings->valid = CTS_SAS_VALID_SPEED; 732230557Sjimharris 733230557Sjimharris xpt_done(ccb); 734230557Sjimharris } 735230557Sjimharris break; 736230557Sjimharris case XPT_SCSI_IO: 737230557Sjimharris isci_io_request_execute_scsi_io(ccb, controller); 738230557Sjimharris break; 739230557Sjimharris#if __FreeBSD_version >= 900026 740230557Sjimharris case XPT_SMP_IO: 741230557Sjimharris isci_io_request_execute_smp_io(ccb, controller); 742230557Sjimharris break; 743230557Sjimharris#endif 744230557Sjimharris case XPT_SET_TRAN_SETTINGS: 745230557Sjimharris ccb->ccb_h.status &= ~CAM_STATUS_MASK; 746230557Sjimharris ccb->ccb_h.status |= CAM_REQ_CMP; 747230557Sjimharris xpt_done(ccb); 748230557Sjimharris break; 749230557Sjimharris case XPT_CALC_GEOMETRY: 750230557Sjimharris cam_calc_geometry(&ccb->ccg, /*extended*/1); 751230557Sjimharris xpt_done(ccb); 752230557Sjimharris break; 753230557Sjimharris case XPT_RESET_DEV: 754230557Sjimharris { 755230557Sjimharris struct ISCI_REMOTE_DEVICE *remote_device = 756230557Sjimharris controller->remote_device[ccb->ccb_h.target_id]; 757230557Sjimharris 758230557Sjimharris if (remote_device != NULL) 759230557Sjimharris isci_remote_device_reset(remote_device, ccb); 760230557Sjimharris else { 761230557Sjimharris ccb->ccb_h.status &= ~CAM_SIM_QUEUED; 762230557Sjimharris ccb->ccb_h.status &= ~CAM_STATUS_MASK; 763230557Sjimharris ccb->ccb_h.status |= CAM_DEV_NOT_THERE; 764230557Sjimharris xpt_done(ccb); 765230557Sjimharris } 766230557Sjimharris } 767230557Sjimharris break; 768230557Sjimharris case XPT_RESET_BUS: 769230557Sjimharris ccb->ccb_h.status = CAM_REQ_CMP; 770230557Sjimharris xpt_done(ccb); 771230557Sjimharris break; 772230557Sjimharris default: 773230557Sjimharris isci_log_message(0, "ISCI", "Unhandled func_code 0x%x\n", 774230557Sjimharris ccb->ccb_h.func_code); 775230557Sjimharris ccb->ccb_h.status &= ~CAM_SIM_QUEUED; 776230557Sjimharris ccb->ccb_h.status &= ~CAM_STATUS_MASK; 777230557Sjimharris ccb->ccb_h.status |= CAM_REQ_INVALID; 778230557Sjimharris xpt_done(ccb); 779230557Sjimharris break; 780230557Sjimharris } 781230557Sjimharris} 782230557Sjimharris 783235751Sjimharris/* 784235751Sjimharris * Unfortunately, SCIL doesn't cleanly handle retry conditions. 785235751Sjimharris * CAM_REQUEUE_REQ works only when no one is using the pass(4) interface. So 786235751Sjimharris * when SCIL denotes an I/O needs to be retried (typically because of mixing 787235751Sjimharris * tagged/non-tagged ATA commands, or running out of NCQ slots), we queue 788235751Sjimharris * these I/O internally. Once SCIL completes an I/O to this device, or we get 789235751Sjimharris * a ready notification, we will retry the first I/O on the queue. 790235751Sjimharris * Unfortunately, SCIL also doesn't cleanly handle starting the new I/O within 791235751Sjimharris * the context of the completion handler, so we need to retry these I/O after 792235751Sjimharris * the completion handler is done executing. 793235751Sjimharris */ 794235751Sjimharrisvoid 795235751Sjimharrisisci_controller_release_queued_ccbs(struct ISCI_CONTROLLER *controller) 796235751Sjimharris{ 797235751Sjimharris struct ISCI_REMOTE_DEVICE *dev; 798235751Sjimharris struct ccb_hdr *ccb_h; 799235751Sjimharris int dev_idx; 800235751Sjimharris 801235751Sjimharris KASSERT(mtx_owned(&controller->lock), ("controller lock not owned")); 802235751Sjimharris 803235751Sjimharris controller->release_queued_ccbs = FALSE; 804235751Sjimharris for (dev_idx = 0; 805235751Sjimharris dev_idx < SCI_MAX_REMOTE_DEVICES; 806235751Sjimharris dev_idx++) { 807235751Sjimharris 808235751Sjimharris dev = controller->remote_device[dev_idx]; 809235751Sjimharris if (dev != NULL && 810235751Sjimharris dev->release_queued_ccb == TRUE && 811235751Sjimharris dev->queued_ccb_in_progress == NULL) { 812235751Sjimharris dev->release_queued_ccb = FALSE; 813235751Sjimharris ccb_h = TAILQ_FIRST(&dev->queued_ccbs); 814235751Sjimharris 815235751Sjimharris if (ccb_h == NULL) 816235751Sjimharris continue; 817235751Sjimharris 818235751Sjimharris isci_log_message(1, "ISCI", "release %p %x\n", ccb_h, 819235751Sjimharris ((union ccb *)ccb_h)->csio.cdb_io.cdb_bytes[0]); 820235751Sjimharris 821235751Sjimharris dev->queued_ccb_in_progress = (union ccb *)ccb_h; 822235751Sjimharris isci_io_request_execute_scsi_io( 823235751Sjimharris (union ccb *)ccb_h, controller); 824235751Sjimharris } 825235751Sjimharris } 826235751Sjimharris} 827