1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * BSD LICENSE
5 *
6 * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 *
13 * * Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * * Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
18 * distribution.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
23 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
24 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
25 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
26 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
30 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 */
32
33 #include <sys/cdefs.h>
34 #include <dev/isci/isci.h>
35
36 #include <sys/sysctl.h>
37 #include <sys/malloc.h>
38
39 #include <cam/cam_periph.h>
40
41 #include <dev/led/led.h>
42
43 #include <dev/pci/pcireg.h>
44 #include <dev/pci/pcivar.h>
45
46 #include <dev/isci/scil/scic_logger.h>
47 #include <dev/isci/scil/scic_library.h>
48 #include <dev/isci/scil/scic_sgpio.h>
49 #include <dev/isci/scil/scic_user_callback.h>
50
51 #include <dev/isci/scil/scif_controller.h>
52 #include <dev/isci/scil/scif_library.h>
53 #include <dev/isci/scil/scif_logger.h>
54 #include <dev/isci/scil/scif_user_callback.h>
55
56 MALLOC_DEFINE(M_ISCI, "isci", "isci driver memory allocations");
57
58 struct isci_softc *g_isci;
59 uint32_t g_isci_debug_level = 0;
60
61 static int isci_probe(device_t);
62 static int isci_attach(device_t);
63 static int isci_detach(device_t);
64
65 int isci_initialize(struct isci_softc *isci);
66
67 void isci_allocate_dma_buffer_callback(void *arg, bus_dma_segment_t *seg,
68 int nseg, int error);
69
70 static device_method_t isci_pci_methods[] = {
71 /* Device interface */
72 DEVMETHOD(device_probe, isci_probe),
73 DEVMETHOD(device_attach, isci_attach),
74 DEVMETHOD(device_detach, isci_detach),
75 { 0, 0 }
76 };
77
78 static driver_t isci_pci_driver = {
79 "isci",
80 isci_pci_methods,
81 sizeof(struct isci_softc),
82 };
83
84 DRIVER_MODULE(isci, pci, isci_pci_driver, 0, 0);
85 MODULE_DEPEND(isci, cam, 1, 1, 1);
86
87 static struct _pcsid
88 {
89 u_int32_t type;
90 const char *desc;
91 } pci_ids[] = {
92 { 0x1d608086, "Intel(R) C600 Series Chipset SAS Controller" },
93 { 0x1d618086, "Intel(R) C600 Series Chipset SAS Controller (SATA mode)" },
94 { 0x1d628086, "Intel(R) C600 Series Chipset SAS Controller" },
95 { 0x1d638086, "Intel(R) C600 Series Chipset SAS Controller" },
96 { 0x1d648086, "Intel(R) C600 Series Chipset SAS Controller" },
97 { 0x1d658086, "Intel(R) C600 Series Chipset SAS Controller" },
98 { 0x1d668086, "Intel(R) C600 Series Chipset SAS Controller" },
99 { 0x1d678086, "Intel(R) C600 Series Chipset SAS Controller" },
100 { 0x1d688086, "Intel(R) C600 Series Chipset SAS Controller" },
101 { 0x1d698086, "Intel(R) C600 Series Chipset SAS Controller" },
102 { 0x1d6a8086, "Intel(R) C600 Series Chipset SAS Controller (SATA mode)" },
103 { 0x1d6b8086, "Intel(R) C600 Series Chipset SAS Controller (SATA mode)" },
104 { 0x1d6c8086, "Intel(R) C600 Series Chipset SAS Controller" },
105 { 0x1d6d8086, "Intel(R) C600 Series Chipset SAS Controller" },
106 { 0x1d6e8086, "Intel(R) C600 Series Chipset SAS Controller" },
107 { 0x1d6f8086, "Intel(R) C600 Series Chipset SAS Controller (SATA mode)" },
108 { 0x00000000, NULL }
109 };
110
111 static int
isci_probe(device_t device)112 isci_probe (device_t device)
113 {
114 u_int32_t type = pci_get_devid(device);
115 struct _pcsid *ep = pci_ids;
116
117 while (ep->type && ep->type != type)
118 ++ep;
119
120 if (ep->desc)
121 {
122 device_set_desc(device, ep->desc);
123 return (BUS_PROBE_DEFAULT);
124 }
125 else
126 return (ENXIO);
127 }
128
129 static int
isci_allocate_pci_memory(struct isci_softc * isci)130 isci_allocate_pci_memory(struct isci_softc *isci)
131 {
132 int i;
133
134 for (i = 0; i < ISCI_NUM_PCI_BARS; i++)
135 {
136 struct ISCI_PCI_BAR *pci_bar = &isci->pci_bar[i];
137
138 pci_bar->resource_id = PCIR_BAR(i*2);
139 pci_bar->resource = bus_alloc_resource_any(isci->device,
140 SYS_RES_MEMORY, &pci_bar->resource_id,
141 RF_ACTIVE);
142
143 if(pci_bar->resource == NULL)
144 isci_log_message(0, "ISCI",
145 "unable to allocate pci resource\n");
146 else {
147 pci_bar->bus_tag = rman_get_bustag(pci_bar->resource);
148 pci_bar->bus_handle =
149 rman_get_bushandle(pci_bar->resource);
150 }
151 }
152
153 return (0);
154 }
155
156 static int
isci_attach(device_t device)157 isci_attach(device_t device)
158 {
159 int error;
160 struct isci_softc *isci = DEVICE2SOFTC(device);
161
162 g_isci = isci;
163 isci->device = device;
164 pci_enable_busmaster(device);
165
166 isci_allocate_pci_memory(isci);
167
168 error = isci_initialize(isci);
169
170 if (error)
171 {
172 isci_detach(device);
173 return (error);
174 }
175
176 isci_interrupt_setup(isci);
177 isci_sysctl_initialize(isci);
178
179 return (0);
180 }
181
182 static int
isci_detach(device_t device)183 isci_detach(device_t device)
184 {
185 struct isci_softc *isci = DEVICE2SOFTC(device);
186 int i, phy;
187
188 for (i = 0; i < isci->controller_count; i++) {
189 struct ISCI_CONTROLLER *controller = &isci->controllers[i];
190 SCI_STATUS status;
191 void *unmap_buffer;
192
193 if (controller->scif_controller_handle != NULL) {
194 scic_controller_disable_interrupts(
195 scif_controller_get_scic_handle(controller->scif_controller_handle));
196
197 mtx_lock(&controller->lock);
198 status = scif_controller_stop(controller->scif_controller_handle, 0);
199 mtx_unlock(&controller->lock);
200
201 while (controller->is_started == TRUE) {
202 /* Now poll for interrupts until the controller stop complete
203 * callback is received.
204 */
205 mtx_lock(&controller->lock);
206 isci_interrupt_poll_handler(controller);
207 mtx_unlock(&controller->lock);
208 pause("isci", 1);
209 }
210
211 if(controller->sim != NULL) {
212 mtx_lock(&controller->lock);
213 xpt_free_path(controller->path);
214 xpt_bus_deregister(cam_sim_path(controller->sim));
215 cam_sim_free(controller->sim, TRUE);
216 mtx_unlock(&controller->lock);
217 }
218 }
219
220 if (controller->timer_memory != NULL)
221 free(controller->timer_memory, M_ISCI);
222
223 if (controller->remote_device_memory != NULL)
224 free(controller->remote_device_memory, M_ISCI);
225
226 for (phy = 0; phy < SCI_MAX_PHYS; phy++) {
227 if (controller->phys[phy].cdev_fault)
228 led_destroy(controller->phys[phy].cdev_fault);
229
230 if (controller->phys[phy].cdev_locate)
231 led_destroy(controller->phys[phy].cdev_locate);
232 }
233
234 while (1) {
235 sci_pool_get(controller->unmap_buffer_pool, unmap_buffer);
236 if (unmap_buffer == NULL)
237 break;
238 contigfree(unmap_buffer, PAGE_SIZE, M_ISCI);
239 }
240 }
241
242 /* The SCIF controllers have been stopped, so we can now
243 * free the SCI library memory.
244 */
245 if (isci->sci_library_memory != NULL)
246 free(isci->sci_library_memory, M_ISCI);
247
248 for (i = 0; i < ISCI_NUM_PCI_BARS; i++)
249 {
250 struct ISCI_PCI_BAR *pci_bar = &isci->pci_bar[i];
251
252 if (pci_bar->resource != NULL)
253 bus_release_resource(device, SYS_RES_MEMORY,
254 pci_bar->resource_id, pci_bar->resource);
255 }
256
257 for (i = 0; i < isci->num_interrupts; i++)
258 {
259 struct ISCI_INTERRUPT_INFO *interrupt_info;
260
261 interrupt_info = &isci->interrupt_info[i];
262
263 if(interrupt_info->tag != NULL)
264 bus_teardown_intr(device, interrupt_info->res,
265 interrupt_info->tag);
266
267 if(interrupt_info->res != NULL)
268 bus_release_resource(device, SYS_RES_IRQ,
269 rman_get_rid(interrupt_info->res),
270 interrupt_info->res);
271
272 pci_release_msi(device);
273 }
274 pci_disable_busmaster(device);
275
276 return (0);
277 }
278
279 int
isci_initialize(struct isci_softc * isci)280 isci_initialize(struct isci_softc *isci)
281 {
282 int error;
283 uint32_t status = 0;
284 uint32_t library_object_size;
285 uint32_t verbosity_mask;
286 uint32_t scic_log_object_mask;
287 uint32_t scif_log_object_mask;
288 uint8_t *header_buffer;
289
290 library_object_size = scif_library_get_object_size(SCI_MAX_CONTROLLERS);
291
292 isci->sci_library_memory =
293 malloc(library_object_size, M_ISCI, M_NOWAIT | M_ZERO );
294
295 isci->sci_library_handle = scif_library_construct(
296 isci->sci_library_memory, SCI_MAX_CONTROLLERS);
297
298 sci_object_set_association( isci->sci_library_handle, (void *)isci);
299
300 verbosity_mask = (1<<SCI_LOG_VERBOSITY_ERROR) |
301 (1<<SCI_LOG_VERBOSITY_WARNING) | (1<<SCI_LOG_VERBOSITY_INFO) |
302 (1<<SCI_LOG_VERBOSITY_TRACE);
303
304 scic_log_object_mask = 0xFFFFFFFF;
305 scic_log_object_mask &= ~SCIC_LOG_OBJECT_COMPLETION_QUEUE;
306 scic_log_object_mask &= ~SCIC_LOG_OBJECT_SSP_IO_REQUEST;
307 scic_log_object_mask &= ~SCIC_LOG_OBJECT_STP_IO_REQUEST;
308 scic_log_object_mask &= ~SCIC_LOG_OBJECT_SMP_IO_REQUEST;
309 scic_log_object_mask &= ~SCIC_LOG_OBJECT_CONTROLLER;
310
311 scif_log_object_mask = 0xFFFFFFFF;
312 scif_log_object_mask &= ~SCIF_LOG_OBJECT_CONTROLLER;
313 scif_log_object_mask &= ~SCIF_LOG_OBJECT_IO_REQUEST;
314
315 TUNABLE_INT_FETCH("hw.isci.debug_level", &g_isci_debug_level);
316
317 sci_logger_enable(sci_object_get_logger(isci->sci_library_handle),
318 scif_log_object_mask, verbosity_mask);
319
320 sci_logger_enable(sci_object_get_logger(
321 scif_library_get_scic_handle(isci->sci_library_handle)),
322 scic_log_object_mask, verbosity_mask);
323
324 header_buffer = (uint8_t *)&isci->pci_common_header;
325 for (uint8_t i = 0; i < sizeof(isci->pci_common_header); i++)
326 header_buffer[i] = pci_read_config(isci->device, i, 1);
327
328 scic_library_set_pci_info(
329 scif_library_get_scic_handle(isci->sci_library_handle),
330 &isci->pci_common_header);
331
332 isci->oem_parameters_found = FALSE;
333
334 isci_get_oem_parameters(isci);
335
336 /* trigger interrupt if 32 completions occur before timeout expires */
337 isci->coalesce_number = 32;
338
339 /* trigger interrupt if 2 microseconds elapse after a completion occurs,
340 * regardless if "coalesce_number" completions have occurred
341 */
342 isci->coalesce_timeout = 2;
343
344 isci->controller_count = scic_library_get_pci_device_controller_count(
345 scif_library_get_scic_handle(isci->sci_library_handle));
346
347 for (int index = 0; index < isci->controller_count; index++) {
348 struct ISCI_CONTROLLER *controller = &isci->controllers[index];
349 SCI_CONTROLLER_HANDLE_T scif_controller_handle;
350
351 controller->index = index;
352 isci_controller_construct(controller, isci);
353
354 scif_controller_handle = controller->scif_controller_handle;
355
356 status = isci_controller_initialize(controller);
357
358 if(status != SCI_SUCCESS) {
359 isci_log_message(0, "ISCI",
360 "isci_controller_initialize FAILED: %x\n",
361 status);
362 return (status);
363 }
364
365 error = isci_controller_allocate_memory(controller);
366
367 if (error != 0)
368 return (error);
369
370 scif_controller_set_interrupt_coalescence(
371 scif_controller_handle, isci->coalesce_number,
372 isci->coalesce_timeout);
373 }
374
375 /* FreeBSD provides us a hook to ensure we get a chance to start
376 * our controllers and complete initial domain discovery before
377 * it searches for the boot device. Once we're done, we'll
378 * disestablish the hook, signaling the kernel that is can proceed
379 * with the boot process.
380 */
381 isci->config_hook.ich_func = &isci_controller_start;
382 isci->config_hook.ich_arg = &isci->controllers[0];
383
384 if (config_intrhook_establish(&isci->config_hook) != 0)
385 isci_log_message(0, "ISCI",
386 "config_intrhook_establish failed!\n");
387
388 return (status);
389 }
390
391 void
isci_allocate_dma_buffer_callback(void * arg,bus_dma_segment_t * seg,int nseg,int error)392 isci_allocate_dma_buffer_callback(void *arg, bus_dma_segment_t *seg,
393 int nseg, int error)
394 {
395 struct ISCI_MEMORY *memory = (struct ISCI_MEMORY *)arg;
396
397 memory->error = error;
398
399 if (nseg != 1 || error != 0)
400 isci_log_message(0, "ISCI",
401 "Failed to allocate physically contiguous memory!\n");
402 else
403 memory->physical_address = seg->ds_addr;
404 }
405
406 int
isci_allocate_dma_buffer(device_t device,struct ISCI_CONTROLLER * controller,struct ISCI_MEMORY * memory)407 isci_allocate_dma_buffer(device_t device, struct ISCI_CONTROLLER *controller,
408 struct ISCI_MEMORY *memory)
409 {
410 uint32_t status;
411
412 status = bus_dma_tag_create(bus_get_dma_tag(device),
413 0x40 /* cacheline alignment */,
414 ISCI_DMA_BOUNDARY, BUS_SPACE_MAXADDR,
415 BUS_SPACE_MAXADDR, NULL, NULL, memory->size,
416 0x1 /* we want physically contiguous */,
417 memory->size, 0, busdma_lock_mutex, &controller->lock,
418 &memory->dma_tag);
419
420 if(status == ENOMEM) {
421 isci_log_message(0, "ISCI", "bus_dma_tag_create failed\n");
422 return (status);
423 }
424
425 status = bus_dmamem_alloc(memory->dma_tag,
426 (void **)&memory->virtual_address, BUS_DMA_ZERO, &memory->dma_map);
427
428 if(status == ENOMEM)
429 {
430 isci_log_message(0, "ISCI", "bus_dmamem_alloc failed\n");
431 return (status);
432 }
433
434 status = bus_dmamap_load(memory->dma_tag, memory->dma_map,
435 (void *)memory->virtual_address, memory->size,
436 isci_allocate_dma_buffer_callback, memory, 0);
437
438 if(status == EINVAL)
439 {
440 isci_log_message(0, "ISCI", "bus_dmamap_load failed\n");
441 return (status);
442 }
443
444 return (0);
445 }
446
447 /**
448 * @brief This callback method asks the user to associate the supplied
449 * lock with an operating environment specific locking construct.
450 *
451 * @param[in] controller This parameter specifies the controller with
452 * which this lock is to be associated.
453 * @param[in] lock This parameter specifies the lock for which the
454 * user should associate an operating environment specific
455 * locking object.
456 *
457 * @see The SCI_LOCK_LEVEL enumeration for more information.
458 *
459 * @return none.
460 */
461 void
scif_cb_lock_associate(SCI_CONTROLLER_HANDLE_T controller,SCI_LOCK_HANDLE_T lock)462 scif_cb_lock_associate(SCI_CONTROLLER_HANDLE_T controller,
463 SCI_LOCK_HANDLE_T lock)
464 {
465
466 }
467
468 /**
469 * @brief This callback method asks the user to de-associate the supplied
470 * lock with an operating environment specific locking construct.
471 *
472 * @param[in] controller This parameter specifies the controller with
473 * which this lock is to be de-associated.
474 * @param[in] lock This parameter specifies the lock for which the
475 * user should de-associate an operating environment specific
476 * locking object.
477 *
478 * @see The SCI_LOCK_LEVEL enumeration for more information.
479 *
480 * @return none.
481 */
482 void
scif_cb_lock_disassociate(SCI_CONTROLLER_HANDLE_T controller,SCI_LOCK_HANDLE_T lock)483 scif_cb_lock_disassociate(SCI_CONTROLLER_HANDLE_T controller,
484 SCI_LOCK_HANDLE_T lock)
485 {
486
487 }
488
489
490 /**
491 * @brief This callback method asks the user to acquire/get the lock.
492 * This method should pend until the lock has been acquired.
493 *
494 * @param[in] controller This parameter specifies the controller with
495 * which this lock is associated.
496 * @param[in] lock This parameter specifies the lock to be acquired.
497 *
498 * @return none
499 */
500 void
scif_cb_lock_acquire(SCI_CONTROLLER_HANDLE_T controller,SCI_LOCK_HANDLE_T lock)501 scif_cb_lock_acquire(SCI_CONTROLLER_HANDLE_T controller,
502 SCI_LOCK_HANDLE_T lock)
503 {
504
505 }
506
507 /**
508 * @brief This callback method asks the user to release a lock.
509 *
510 * @param[in] controller This parameter specifies the controller with
511 * which this lock is associated.
512 * @param[in] lock This parameter specifies the lock to be released.
513 *
514 * @return none
515 */
516 void
scif_cb_lock_release(SCI_CONTROLLER_HANDLE_T controller,SCI_LOCK_HANDLE_T lock)517 scif_cb_lock_release(SCI_CONTROLLER_HANDLE_T controller,
518 SCI_LOCK_HANDLE_T lock)
519 {
520 }
521
522 /**
523 * @brief This callback method creates an OS specific deferred task
524 * for internal usage. The handler to deferred task is stored by OS
525 * driver.
526 *
527 * @param[in] controller This parameter specifies the controller object
528 * with which this callback is associated.
529 *
530 * @return none
531 */
532 void
scif_cb_start_internal_io_task_create(SCI_CONTROLLER_HANDLE_T controller)533 scif_cb_start_internal_io_task_create(SCI_CONTROLLER_HANDLE_T controller)
534 {
535
536 }
537
538 /**
539 * @brief This callback method schedules a OS specific deferred task.
540 *
541 * @param[in] controller This parameter specifies the controller
542 * object with which this callback is associated.
543 * @param[in] start_internal_io_task_routine This parameter specifies the
544 * sci start_internal_io routine.
545 * @param[in] context This parameter specifies a handle to a parameter
546 * that will be passed into the "start_internal_io_task_routine"
547 * when it is invoked.
548 *
549 * @return none
550 */
551 void
scif_cb_start_internal_io_task_schedule(SCI_CONTROLLER_HANDLE_T scif_controller,FUNCPTR start_internal_io_task_routine,void * context)552 scif_cb_start_internal_io_task_schedule(SCI_CONTROLLER_HANDLE_T scif_controller,
553 FUNCPTR start_internal_io_task_routine, void *context)
554 {
555 /** @todo Use FreeBSD tasklet to defer this routine to a later time,
556 * rather than calling the routine inline.
557 */
558 SCI_START_INTERNAL_IO_ROUTINE sci_start_internal_io_routine =
559 (SCI_START_INTERNAL_IO_ROUTINE)start_internal_io_task_routine;
560
561 sci_start_internal_io_routine(context);
562 }
563
564 /**
565 * @brief In this method the user must write to PCI memory via access.
566 * This method is used for access to memory space and IO space.
567 *
568 * @param[in] controller The controller for which to read a DWORD.
569 * @param[in] address This parameter depicts the address into
570 * which to write.
571 * @param[out] write_value This parameter depicts the value being written
572 * into the PCI memory location.
573 *
574 * @todo These PCI memory access calls likely needs to be optimized into macros?
575 */
576 void
scic_cb_pci_write_dword(SCI_CONTROLLER_HANDLE_T scic_controller,void * address,uint32_t write_value)577 scic_cb_pci_write_dword(SCI_CONTROLLER_HANDLE_T scic_controller,
578 void *address, uint32_t write_value)
579 {
580 SCI_CONTROLLER_HANDLE_T scif_controller =
581 (SCI_CONTROLLER_HANDLE_T) sci_object_get_association(scic_controller);
582 struct ISCI_CONTROLLER *isci_controller =
583 (struct ISCI_CONTROLLER *) sci_object_get_association(scif_controller);
584 struct isci_softc *isci = isci_controller->isci;
585 uint32_t bar = (uint32_t)(((POINTER_UINT)address & 0xF0000000) >> 28);
586 bus_size_t offset = (bus_size_t)((POINTER_UINT)address & 0x0FFFFFFF);
587
588 bus_space_write_4(isci->pci_bar[bar].bus_tag,
589 isci->pci_bar[bar].bus_handle, offset, write_value);
590 }
591
592 /**
593 * @brief In this method the user must read from PCI memory via access.
594 * This method is used for access to memory space and IO space.
595 *
596 * @param[in] controller The controller for which to read a DWORD.
597 * @param[in] address This parameter depicts the address from
598 * which to read.
599 *
600 * @return The value being returned from the PCI memory location.
601 *
602 * @todo This PCI memory access calls likely need to be optimized into macro?
603 */
604 uint32_t
scic_cb_pci_read_dword(SCI_CONTROLLER_HANDLE_T scic_controller,void * address)605 scic_cb_pci_read_dword(SCI_CONTROLLER_HANDLE_T scic_controller, void *address)
606 {
607 SCI_CONTROLLER_HANDLE_T scif_controller =
608 (SCI_CONTROLLER_HANDLE_T)sci_object_get_association(scic_controller);
609 struct ISCI_CONTROLLER *isci_controller =
610 (struct ISCI_CONTROLLER *)sci_object_get_association(scif_controller);
611 struct isci_softc *isci = isci_controller->isci;
612 uint32_t bar = (uint32_t)(((POINTER_UINT)address & 0xF0000000) >> 28);
613 bus_size_t offset = (bus_size_t)((POINTER_UINT)address & 0x0FFFFFFF);
614
615 return (bus_space_read_4(isci->pci_bar[bar].bus_tag,
616 isci->pci_bar[bar].bus_handle, offset));
617 }
618
619 /**
620 * @brief This method is called when the core requires the OS driver
621 * to stall execution. This method is utilized during initialization
622 * or non-performance paths only.
623 *
624 * @param[in] microseconds This parameter specifies the number of
625 * microseconds for which to stall. The operating system driver
626 * is allowed to round this value up where necessary.
627 *
628 * @return none.
629 */
630 void
scic_cb_stall_execution(uint32_t microseconds)631 scic_cb_stall_execution(uint32_t microseconds)
632 {
633
634 DELAY(microseconds);
635 }
636
637 /**
638 * @brief In this method the user must return the base address register (BAR)
639 * value for the supplied base address register number.
640 *
641 * @param[in] controller The controller for which to retrieve the bar number.
642 * @param[in] bar_number This parameter depicts the BAR index/number to be read.
643 *
644 * @return Return a pointer value indicating the contents of the BAR.
645 * @retval NULL indicates an invalid BAR index/number was specified.
646 * @retval All other values indicate a valid VIRTUAL address from the BAR.
647 */
648 void *
scic_cb_pci_get_bar(SCI_CONTROLLER_HANDLE_T controller,uint16_t bar_number)649 scic_cb_pci_get_bar(SCI_CONTROLLER_HANDLE_T controller,
650 uint16_t bar_number)
651 {
652
653 return ((void *)(POINTER_UINT)((uint32_t)bar_number << 28));
654 }
655
656 /**
657 * @brief This method informs the SCI Core user that a phy/link became
658 * ready, but the phy is not allowed in the port. In some
659 * situations the underlying hardware only allows for certain phy
660 * to port mappings. If these mappings are violated, then this
661 * API is invoked.
662 *
663 * @param[in] controller This parameter represents the controller which
664 * contains the port.
665 * @param[in] port This parameter specifies the SCI port object for which
666 * the callback is being invoked.
667 * @param[in] phy This parameter specifies the phy that came ready, but the
668 * phy can't be a valid member of the port.
669 *
670 * @return none
671 */
672 void
scic_cb_port_invalid_link_up(SCI_CONTROLLER_HANDLE_T controller,SCI_PORT_HANDLE_T port,SCI_PHY_HANDLE_T phy)673 scic_cb_port_invalid_link_up(SCI_CONTROLLER_HANDLE_T controller,
674 SCI_PORT_HANDLE_T port, SCI_PHY_HANDLE_T phy)
675 {
676
677 }
678