Lines Matching +full:data +full:- +full:active
1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * pci_link.c - ACPI PCI Interrupt Link Device Driver ($Revision: 34 $)
12 * for IRQ management (e.g. start()->_SRS).
52 * If a link is initialized, we never change its active and initialized
53 * later even the link is disable. Instead, we just repick the active irq
56 u32 active; /* Current IRQ */ member
75 static int sci_irq = -1, sci_penalty;
77 /* --------------------------------------------------------------------------
79 -------------------------------------------------------------------------- */
88 acpi_handle handle = link->device->handle; in acpi_pci_link_check_possible()
91 switch (resource->type) { in acpi_pci_link_check_possible()
97 struct acpi_resource_irq *p = &resource->data.irq; in acpi_pci_link_check_possible()
98 if (!p->interrupt_count) { in acpi_pci_link_check_possible()
104 (i < p->interrupt_count in acpi_pci_link_check_possible()
106 if (!p->interrupts[i]) { in acpi_pci_link_check_possible()
109 p->interrupts[i]); in acpi_pci_link_check_possible()
112 link->irq.possible[i] = p->interrupts[i]; in acpi_pci_link_check_possible()
113 link->irq.possible_count++; in acpi_pci_link_check_possible()
115 link->irq.triggering = p->triggering; in acpi_pci_link_check_possible()
116 link->irq.polarity = p->polarity; in acpi_pci_link_check_possible()
117 link->irq.resource_type = ACPI_RESOURCE_TYPE_IRQ; in acpi_pci_link_check_possible()
123 &resource->data.extended_irq; in acpi_pci_link_check_possible()
124 if (!p->interrupt_count) { in acpi_pci_link_check_possible()
130 (i < p->interrupt_count in acpi_pci_link_check_possible()
132 if (!p->interrupts[i]) { in acpi_pci_link_check_possible()
135 p->interrupts[i]); in acpi_pci_link_check_possible()
138 link->irq.possible[i] = p->interrupts[i]; in acpi_pci_link_check_possible()
139 link->irq.possible_count++; in acpi_pci_link_check_possible()
141 link->irq.triggering = p->triggering; in acpi_pci_link_check_possible()
142 link->irq.polarity = p->polarity; in acpi_pci_link_check_possible()
143 link->irq.resource_type = ACPI_RESOURCE_TYPE_EXTENDED_IRQ; in acpi_pci_link_check_possible()
148 resource->type); in acpi_pci_link_check_possible()
157 acpi_handle handle = link->device->handle; in acpi_pci_link_get_possible()
168 link->irq.possible_count); in acpi_pci_link_get_possible()
178 switch (resource->type) { in acpi_pci_link_check_current()
184 struct acpi_resource_irq *p = &resource->data.irq; in acpi_pci_link_check_current()
185 if (!p->interrupt_count) { in acpi_pci_link_check_current()
193 *irq = p->interrupts[0]; in acpi_pci_link_check_current()
199 &resource->data.extended_irq; in acpi_pci_link_check_current()
200 if (!p->interrupt_count) { in acpi_pci_link_check_current()
208 *irq = p->interrupts[0]; in acpi_pci_link_check_current()
214 resource->type); in acpi_pci_link_check_current()
222 * Run _CRS and set link->irq.active
225 * 0 - success
226 * !0 - failure
230 acpi_handle handle = link->device->handle; in acpi_pci_link_get_current()
235 link->irq.active = 0; in acpi_pci_link_get_current()
239 /* Query _STA, set link->device->status */ in acpi_pci_link_get_current()
240 result = acpi_bus_get_status(link->device); in acpi_pci_link_get_current()
246 if (!link->device->status.enabled) { in acpi_pci_link_get_current()
260 result = -ENODEV; in acpi_pci_link_get_current()
266 result = -ENODEV; in acpi_pci_link_get_current()
269 link->irq.active = irq; in acpi_pci_link_get_current()
271 acpi_handle_debug(handle, "Link at IRQ %d \n", link->irq.active); in acpi_pci_link_get_current()
284 acpi_handle handle = link->device->handle; in acpi_pci_link_set()
289 return -EINVAL; in acpi_pci_link_set()
293 return -ENOMEM; in acpi_pci_link_set()
298 switch (link->irq.resource_type) { in acpi_pci_link_set()
300 resource->res.type = ACPI_RESOURCE_TYPE_IRQ; in acpi_pci_link_set()
301 resource->res.length = sizeof(struct acpi_resource); in acpi_pci_link_set()
302 resource->res.data.irq.triggering = link->irq.triggering; in acpi_pci_link_set()
303 resource->res.data.irq.polarity = in acpi_pci_link_set()
304 link->irq.polarity; in acpi_pci_link_set()
305 if (link->irq.triggering == ACPI_EDGE_SENSITIVE) in acpi_pci_link_set()
306 resource->res.data.irq.shareable = in acpi_pci_link_set()
309 resource->res.data.irq.shareable = ACPI_SHARED; in acpi_pci_link_set()
310 resource->res.data.irq.interrupt_count = 1; in acpi_pci_link_set()
311 resource->res.data.irq.interrupts[0] = irq; in acpi_pci_link_set()
315 resource->res.type = ACPI_RESOURCE_TYPE_EXTENDED_IRQ; in acpi_pci_link_set()
316 resource->res.length = sizeof(struct acpi_resource); in acpi_pci_link_set()
317 resource->res.data.extended_irq.producer_consumer = in acpi_pci_link_set()
319 resource->res.data.extended_irq.triggering = in acpi_pci_link_set()
320 link->irq.triggering; in acpi_pci_link_set()
321 resource->res.data.extended_irq.polarity = in acpi_pci_link_set()
322 link->irq.polarity; in acpi_pci_link_set()
323 if (link->irq.triggering == ACPI_EDGE_SENSITIVE) in acpi_pci_link_set()
324 resource->res.data.extended_irq.shareable = in acpi_pci_link_set()
327 resource->res.data.extended_irq.shareable = ACPI_SHARED; in acpi_pci_link_set()
328 resource->res.data.extended_irq.interrupt_count = 1; in acpi_pci_link_set()
329 resource->res.data.extended_irq.interrupts[0] = irq; in acpi_pci_link_set()
334 link->irq.resource_type); in acpi_pci_link_set()
335 result = -EINVAL; in acpi_pci_link_set()
339 resource->end.type = ACPI_RESOURCE_TYPE_END_TAG; in acpi_pci_link_set()
340 resource->end.length = sizeof(struct acpi_resource); in acpi_pci_link_set()
343 status = acpi_set_current_resources(link->device->handle, &buffer); in acpi_pci_link_set()
348 result = -ENODEV; in acpi_pci_link_set()
352 /* Query _STA, set device->status */ in acpi_pci_link_set()
353 result = acpi_bus_get_status(link->device); in acpi_pci_link_set()
358 if (!link->device->status.enabled) in acpi_pci_link_set()
361 /* Query _CRS, set link->irq.active */ in acpi_pci_link_set()
369 * set link->irq.active in acpi_pci_link_set()
371 if (link->irq.active != irq) { in acpi_pci_link_set()
377 link->irq.active, irq); in acpi_pci_link_set()
378 link->irq.active = irq; in acpi_pci_link_set()
381 acpi_handle_debug(handle, "Set IRQ %d\n", link->irq.active); in acpi_pci_link_set()
388 /* --------------------------------------------------------------------------
390 -------------------------------------------------------------------------- */
397 * that the BIOS has already set to active. This is necessary because
399 * if the BIOS doesn't set a Link Device active, ACPI needs to program it
403 * ISA IRQs. Boot params are available to over-ride the default table:
416 * by multiple active devices -- it is not optimal.
418 * If interrupt performance is that important, get an IO-APIC system
459 * If a link is active, penalize its IRQ heavily in acpi_irq_pci_sharing_penalty()
462 if (link->irq.active && link->irq.active == irq) in acpi_irq_pci_sharing_penalty()
468 for (i = 0; i < link->irq.possible_count; i++) in acpi_irq_pci_sharing_penalty()
469 if (link->irq.possible[i] == irq) in acpi_irq_pci_sharing_penalty()
471 link->irq.possible_count; in acpi_irq_pci_sharing_penalty()
501 * reflect the possible and active irqs in the penalty table -- in acpi_irq_penalty_init()
504 if (link->irq.possible_count) { in acpi_irq_penalty_init()
507 link->irq.possible_count; in acpi_irq_penalty_init()
509 for (i = 0; i < link->irq.possible_count; i++) { in acpi_irq_penalty_init()
510 if (link->irq.possible[i] < ACPI_MAX_ISA_IRQS) in acpi_irq_penalty_init()
511 acpi_isa_irq_penalty[link->irq. in acpi_irq_penalty_init()
516 } else if (link->irq.active && in acpi_irq_penalty_init()
517 (link->irq.active < ACPI_MAX_ISA_IRQS)) { in acpi_irq_penalty_init()
518 acpi_isa_irq_penalty[link->irq.active] += in acpi_irq_penalty_init()
526 static int acpi_irq_balance = -1; /* 0: static, 1: balance */
530 acpi_handle handle = link->device->handle; in acpi_pci_link_allocate()
534 if (link->irq.initialized) { in acpi_pci_link_allocate()
535 if (link->refcnt == 0) in acpi_pci_link_allocate()
537 acpi_pci_link_set(link, link->irq.active); in acpi_pci_link_allocate()
542 * search for active IRQ in list of possible IRQs. in acpi_pci_link_allocate()
544 for (i = 0; i < link->irq.possible_count; ++i) { in acpi_pci_link_allocate()
545 if (link->irq.active == link->irq.possible[i]) in acpi_pci_link_allocate()
549 * forget active IRQ that is not in possible list in acpi_pci_link_allocate()
551 if (i == link->irq.possible_count) { in acpi_pci_link_allocate()
554 link->irq.active); in acpi_pci_link_allocate()
555 link->irq.active = 0; in acpi_pci_link_allocate()
559 * if active found, use it; else pick entry from end of possible list. in acpi_pci_link_allocate()
561 if (link->irq.active) in acpi_pci_link_allocate()
562 irq = link->irq.active; in acpi_pci_link_allocate()
564 irq = link->irq.possible[link->irq.possible_count - 1]; in acpi_pci_link_allocate()
566 if (acpi_irq_balance || !link->irq.active) { in acpi_pci_link_allocate()
571 for (i = (link->irq.possible_count - 1); i >= 0; i--) { in acpi_pci_link_allocate()
573 acpi_irq_get_penalty(link->irq.possible[i])) in acpi_pci_link_allocate()
574 irq = link->irq.possible[i]; in acpi_pci_link_allocate()
580 return -ENODEV; in acpi_pci_link_allocate()
587 return -ENODEV; in acpi_pci_link_allocate()
589 if (link->irq.active < ACPI_MAX_ISA_IRQS) in acpi_pci_link_allocate()
590 acpi_isa_irq_penalty[link->irq.active] += in acpi_pci_link_allocate()
594 link->irq.active); in acpi_pci_link_allocate()
597 link->irq.initialized = 1; in acpi_pci_link_allocate()
604 * failure: return -1
614 return -1; in acpi_pci_link_allocate_irq()
620 return -1; in acpi_pci_link_allocate_irq()
626 return -1; in acpi_pci_link_allocate_irq()
632 return -1; in acpi_pci_link_allocate_irq()
635 if (!link->irq.active) { in acpi_pci_link_allocate_irq()
637 acpi_handle_err(handle, "Link active IRQ is 0!\n"); in acpi_pci_link_allocate_irq()
638 return -1; in acpi_pci_link_allocate_irq()
640 link->refcnt++; in acpi_pci_link_allocate_irq()
644 *triggering = link->irq.triggering; in acpi_pci_link_allocate_irq()
646 *polarity = link->irq.polarity; in acpi_pci_link_allocate_irq()
648 *name = acpi_device_bid(link->device); in acpi_pci_link_allocate_irq()
650 return link->irq.active; in acpi_pci_link_allocate_irq()
664 return -1; in acpi_pci_link_free_irq()
670 return -1; in acpi_pci_link_free_irq()
674 if (!link->irq.initialized) { in acpi_pci_link_free_irq()
677 return -1; in acpi_pci_link_free_irq()
689 link->refcnt--; in acpi_pci_link_free_irq()
693 if (link->refcnt == 0) in acpi_pci_link_free_irq()
694 acpi_evaluate_object(link->device->handle, "_DIS", NULL, NULL); in acpi_pci_link_free_irq()
697 return link->irq.active; in acpi_pci_link_free_irq()
700 /* --------------------------------------------------------------------------
702 -------------------------------------------------------------------------- */
707 acpi_handle handle = device->handle; in acpi_pci_link_add()
714 return -ENOMEM; in acpi_pci_link_add()
716 link->device = device; in acpi_pci_link_add()
719 device->driver_data = link; in acpi_pci_link_add()
726 /* query and set link->irq.active */ in acpi_pci_link_add()
730 acpi_device_bid(device), link->irq.active); in acpi_pci_link_add()
732 for (i = 0; i < link->irq.possible_count; i++) { in acpi_pci_link_add()
733 if (link->irq.active != link->irq.possible[i]) in acpi_pci_link_add()
735 link->irq.possible[i]); in acpi_pci_link_add()
738 if (!link->device->status.enabled) in acpi_pci_link_add()
741 list_add_tail(&link->list, &acpi_link_list); in acpi_pci_link_add()
744 /* disable all links -- to be activated on use */ in acpi_pci_link_add()
758 if (link->refcnt && link->irq.active && link->irq.initialized) in acpi_pci_link_resume()
759 return (acpi_pci_link_set(link, link->irq.active)); in acpi_pci_link_resume()
780 list_del(&link->list); in acpi_pci_link_remove()
827 void acpi_penalize_isa_irq(int irq, int active) in acpi_penalize_isa_irq() argument
831 (active ? PIRQ_PENALTY_ISA_USED : PIRQ_PENALTY_PCI_USING); in acpi_penalize_isa_irq()
852 * Over-ride default table to reserve additional IRQs for use by ISA
864 * Over-ride default table to free additional IRQs for use by PCI
900 if (acpi_irq_balance == -1) { in acpi_pci_link_init()