Lines Matching +full:ports +full:- +full:offset2
1 // SPDX-License-Identifier: GPL-2.0
53 * vendor-specific capability space
64 * struct vmd_irq - private data to map driver IRQ to the VMD shared vector
70 * Every MSI/MSI-X IRQ requested for a device in a VMD domain will be mapped to
81 * struct vmd_irq_list - list of driver requested IRQs mapping to a VMD vector
111 return container_of(bus->sysdata, struct vmd_dev, sysdata); in vmd_from_bus()
117 return irqs - vmd->irqs; in index_from_irqs()
123 * destination ID for the VMD MSI-X table. The VMD muxes interrupts in its
124 * domain into one of its own, and the VMD driver de-muxes these for the
130 struct vmd_irq *vmdirq = data->chip_data; in vmd_compose_msi_msg()
131 struct vmd_irq_list *irq = vmdirq->irq; in vmd_compose_msi_msg()
134 msg->address_hi = MSI_ADDR_BASE_HI; in vmd_compose_msi_msg()
135 msg->address_lo = MSI_ADDR_BASE_LO | in vmd_compose_msi_msg()
137 msg->data = 0; in vmd_compose_msi_msg()
145 struct vmd_irq *vmdirq = data->chip_data; in vmd_irq_enable()
149 WARN_ON(vmdirq->enabled); in vmd_irq_enable()
150 list_add_tail_rcu(&vmdirq->node, &vmdirq->irq->irq_list); in vmd_irq_enable()
151 vmdirq->enabled = true; in vmd_irq_enable()
154 data->chip->irq_unmask(data); in vmd_irq_enable()
159 struct vmd_irq *vmdirq = data->chip_data; in vmd_irq_disable()
162 data->chip->irq_mask(data); in vmd_irq_disable()
165 if (vmdirq->enabled) { in vmd_irq_disable()
166 list_del_rcu(&vmdirq->node); in vmd_irq_disable()
167 vmdirq->enabled = false; in vmd_irq_disable()
179 return -EINVAL; in vmd_irq_set_affinity()
183 .name = "VMD-MSI",
205 if (vmd->msix_count == 1) in vmd_next_irq()
206 return &vmd->irqs[0]; in vmd_next_irq()
209 * White list for fast-interrupt handlers. All others will share the in vmd_next_irq()
212 switch (msi_desc_to_pci_dev(desc)->class) { in vmd_next_irq()
216 return &vmd->irqs[0]; in vmd_next_irq()
220 for (i = 1; i < vmd->msix_count; i++) in vmd_next_irq()
221 if (vmd->irqs[i].count < vmd->irqs[best].count) in vmd_next_irq()
223 vmd->irqs[best].count++; in vmd_next_irq()
226 return &vmd->irqs[best]; in vmd_next_irq()
233 struct msi_desc *desc = arg->desc; in vmd_msi_init()
234 struct vmd_dev *vmd = vmd_from_bus(msi_desc_to_pci_dev(desc)->bus); in vmd_msi_init()
239 return -ENOMEM; in vmd_msi_init()
241 INIT_LIST_HEAD(&vmdirq->node); in vmd_msi_init()
242 vmdirq->irq = vmd_next_irq(vmd, desc); in vmd_msi_init()
243 vmdirq->virq = virq; in vmd_msi_init()
244 index = index_from_irqs(vmd, vmdirq->irq); in vmd_msi_init()
245 vector = pci_irq_vector(vmd->dev, index); in vmd_msi_init()
247 irq_domain_set_info(domain, virq, vector, info->chip, vmdirq, in vmd_msi_init()
258 synchronize_srcu(&vmdirq->irq->srcu); in vmd_msi_free()
262 vmdirq->irq->count--; in vmd_msi_free()
272 struct vmd_dev *vmd = vmd_from_bus(pdev->bus); in vmd_msi_prepare()
274 if (nvec > vmd->msix_count) in vmd_msi_prepare()
275 return vmd->msix_count; in vmd_msi_prepare()
283 arg->desc = desc; in vmd_set_desc()
305 fn = irq_domain_alloc_named_id_fwnode("VMD-MSI", vmd->sysdata.domain); in vmd_create_irq_domain()
307 return -ENODEV; in vmd_create_irq_domain()
309 vmd->irq_domain = pci_msi_create_irq_domain(fn, &vmd_msi_domain_info, NULL); in vmd_create_irq_domain()
310 if (!vmd->irq_domain) { in vmd_create_irq_domain()
312 return -ENODEV; in vmd_create_irq_domain()
320 if (vmd->irq_domain) { in vmd_remove_irq_domain()
321 struct fwnode_handle *fn = vmd->irq_domain->fwnode; in vmd_remove_irq_domain()
323 irq_domain_remove(vmd->irq_domain); in vmd_remove_irq_domain()
331 char __iomem *addr = vmd->cfgbar + in vmd_cfg_addr()
332 ((bus->number - vmd->busn_start) << 20) + in vmd_cfg_addr()
335 if ((addr - vmd->cfgbar) + len >= in vmd_cfg_addr()
336 resource_size(&vmd->dev->resource[VMD_CFGBAR])) in vmd_cfg_addr()
355 return -EFAULT; in vmd_pci_read()
357 spin_lock_irqsave(&vmd->cfg_lock, flags); in vmd_pci_read()
369 ret = -EINVAL; in vmd_pci_read()
372 spin_unlock_irqrestore(&vmd->cfg_lock, flags); in vmd_pci_read()
377 * VMD h/w converts non-posted config writes to posted memory writes. The
378 * read-back in this function forces the completion so it returns only after
390 return -EFAULT; in vmd_pci_write()
392 spin_lock_irqsave(&vmd->cfg_lock, flags); in vmd_pci_write()
407 ret = -EINVAL; in vmd_pci_write()
410 spin_unlock_irqrestore(&vmd->cfg_lock, flags); in vmd_pci_write()
421 vmd->dev->resource[VMD_MEMBAR1].child = &vmd->resources[1]; in vmd_attach_resources()
422 vmd->dev->resource[VMD_MEMBAR2].child = &vmd->resources[2]; in vmd_attach_resources()
427 vmd->dev->resource[VMD_MEMBAR1].child = NULL; in vmd_detach_resources()
428 vmd->dev->resource[VMD_MEMBAR2].child = NULL; in vmd_detach_resources()
449 resource_size_t *offset2) in vmd_get_phys_offsets() argument
451 struct pci_dev *dev = vmd->dev; in vmd_get_phys_offsets()
460 return -ENODEV; in vmd_get_phys_offsets()
467 return -ENOMEM; in vmd_get_phys_offsets()
474 /* Hypervisor-Emulated Vendor-Specific Capability */ in vmd_get_phys_offsets()
493 *offset1 = dev->resource[VMD_MEMBAR1].start - in vmd_get_phys_offsets()
495 *offset2 = dev->resource[VMD_MEMBAR2].start - in vmd_get_phys_offsets()
503 struct pci_dev *dev = vmd->dev; in vmd_get_bus_number_start()
512 vmd->busn_start = 0; in vmd_get_bus_number_start()
515 vmd->busn_start = 128; in vmd_get_bus_number_start()
518 vmd->busn_start = 224; in vmd_get_bus_number_start()
523 return -ENODEV; in vmd_get_bus_number_start()
536 idx = srcu_read_lock(&irqs->srcu); in vmd_irq()
537 list_for_each_entry_rcu(vmdirq, &irqs->irq_list, node) in vmd_irq()
538 generic_handle_irq(vmdirq->virq); in vmd_irq()
539 srcu_read_unlock(&irqs->srcu, idx); in vmd_irq()
546 struct pci_dev *dev = vmd->dev; in vmd_alloc_irqs()
549 vmd->msix_count = pci_msix_vec_count(dev); in vmd_alloc_irqs()
550 if (vmd->msix_count < 0) in vmd_alloc_irqs()
551 return -ENODEV; in vmd_alloc_irqs()
553 vmd->msix_count = pci_alloc_irq_vectors(dev, 1, vmd->msix_count, in vmd_alloc_irqs()
555 if (vmd->msix_count < 0) in vmd_alloc_irqs()
556 return vmd->msix_count; in vmd_alloc_irqs()
558 vmd->irqs = devm_kcalloc(&dev->dev, vmd->msix_count, sizeof(*vmd->irqs), in vmd_alloc_irqs()
560 if (!vmd->irqs) in vmd_alloc_irqs()
561 return -ENOMEM; in vmd_alloc_irqs()
563 for (i = 0; i < vmd->msix_count; i++) { in vmd_alloc_irqs()
564 err = init_srcu_struct(&vmd->irqs[i].srcu); in vmd_alloc_irqs()
568 INIT_LIST_HEAD(&vmd->irqs[i].irq_list); in vmd_alloc_irqs()
569 err = devm_request_irq(&dev->dev, pci_irq_vector(dev, i), in vmd_alloc_irqs()
571 "vmd", &vmd->irqs[i]); in vmd_alloc_irqs()
581 struct pci_sysdata *sd = &vmd->sysdata; in vmd_enable_domain()
593 * guests to correctly assign host physical addresses to the root ports in vmd_enable_domain()
610 * limits the bus range to between 0-127, 128-255, or 224-255 in vmd_enable_domain()
618 res = &vmd->dev->resource[VMD_CFGBAR]; in vmd_enable_domain()
619 vmd->resources[0] = (struct resource) { in vmd_enable_domain()
621 .start = vmd->busn_start, in vmd_enable_domain()
622 .end = vmd->busn_start + (resource_size(res) >> 20) - 1, in vmd_enable_domain()
628 * put 32-bit resources in the window. in vmd_enable_domain()
630 * There's no hardware reason why a 64-bit window *couldn't* in vmd_enable_domain()
631 * contain a 32-bit resource, but pbus_size_mem() computes the in vmd_enable_domain()
632 * bridge window size assuming a 64-bit window will contain no in vmd_enable_domain()
633 * 32-bit resources. __pci_assign_resource() enforces that in vmd_enable_domain()
636 * The only way we could use a 64-bit non-prefetchable MEMBAR is in vmd_enable_domain()
637 * if its address is <4GB so that we can convert it to a 32-bit in vmd_enable_domain()
643 res = &vmd->dev->resource[VMD_MEMBAR1]; in vmd_enable_domain()
644 upper_bits = upper_32_bits(res->end); in vmd_enable_domain()
645 flags = res->flags & ~IORESOURCE_SIZEALIGN; in vmd_enable_domain()
648 vmd->resources[1] = (struct resource) { in vmd_enable_domain()
650 .start = res->start, in vmd_enable_domain()
651 .end = res->end, in vmd_enable_domain()
656 res = &vmd->dev->resource[VMD_MEMBAR2]; in vmd_enable_domain()
657 upper_bits = upper_32_bits(res->end); in vmd_enable_domain()
658 flags = res->flags & ~IORESOURCE_SIZEALIGN; in vmd_enable_domain()
661 vmd->resources[2] = (struct resource) { in vmd_enable_domain()
663 .start = res->start + membar2_offset, in vmd_enable_domain()
664 .end = res->end, in vmd_enable_domain()
669 sd->vmd_dev = vmd->dev; in vmd_enable_domain()
670 sd->domain = vmd_find_free_domain(); in vmd_enable_domain()
671 if (sd->domain < 0) in vmd_enable_domain()
672 return sd->domain; in vmd_enable_domain()
674 sd->node = pcibus_to_node(vmd->dev->bus); in vmd_enable_domain()
684 irq_domain_update_bus_token(vmd->irq_domain, DOMAIN_BUS_VMD_MSI); in vmd_enable_domain()
686 pci_add_resource(&resources, &vmd->resources[0]); in vmd_enable_domain()
687 pci_add_resource_offset(&resources, &vmd->resources[1], offset[0]); in vmd_enable_domain()
688 pci_add_resource_offset(&resources, &vmd->resources[2], offset[1]); in vmd_enable_domain()
690 vmd->bus = pci_create_root_bus(&vmd->dev->dev, vmd->busn_start, in vmd_enable_domain()
692 if (!vmd->bus) { in vmd_enable_domain()
695 return -ENODEV; in vmd_enable_domain()
699 if (vmd->irq_domain) in vmd_enable_domain()
700 dev_set_msi_domain(&vmd->bus->dev, vmd->irq_domain); in vmd_enable_domain()
702 pci_scan_child_bus(vmd->bus); in vmd_enable_domain()
703 pci_assign_unassigned_bus_resources(vmd->bus); in vmd_enable_domain()
708 * run on each of the real root ports. in vmd_enable_domain()
710 list_for_each_entry(child, &vmd->bus->children, node) in vmd_enable_domain()
713 pci_bus_add_devices(vmd->bus); in vmd_enable_domain()
715 WARN(sysfs_create_link(&vmd->dev->dev.kobj, &vmd->bus->dev.kobj, in vmd_enable_domain()
725 if (resource_size(&dev->resource[VMD_CFGBAR]) < (1 << 20)) in vmd_probe()
726 return -ENOMEM; in vmd_probe()
728 vmd = devm_kzalloc(&dev->dev, sizeof(*vmd), GFP_KERNEL); in vmd_probe()
730 return -ENOMEM; in vmd_probe()
732 vmd->dev = dev; in vmd_probe()
737 vmd->cfgbar = pcim_iomap(dev, VMD_CFGBAR, 0); in vmd_probe()
738 if (!vmd->cfgbar) in vmd_probe()
739 return -ENOMEM; in vmd_probe()
742 if (dma_set_mask_and_coherent(&dev->dev, DMA_BIT_MASK(64)) && in vmd_probe()
743 dma_set_mask_and_coherent(&dev->dev, DMA_BIT_MASK(32))) in vmd_probe()
744 return -ENODEV; in vmd_probe()
750 spin_lock_init(&vmd->cfg_lock); in vmd_probe()
752 err = vmd_enable_domain(vmd, (unsigned long) id->driver_data); in vmd_probe()
756 dev_info(&vmd->dev->dev, "Bound to PCI domain %04x\n", in vmd_probe()
757 vmd->sysdata.domain); in vmd_probe()
765 for (i = 0; i < vmd->msix_count; i++) in vmd_cleanup_srcu()
766 cleanup_srcu_struct(&vmd->irqs[i].srcu); in vmd_cleanup_srcu()
773 sysfs_remove_link(&vmd->dev->dev.kobj, "domain"); in vmd_remove()
774 pci_stop_root_bus(vmd->bus); in vmd_remove()
775 pci_remove_root_bus(vmd->bus); in vmd_remove()
788 for (i = 0; i < vmd->msix_count; i++) in vmd_suspend()
789 devm_free_irq(dev, pci_irq_vector(pdev, i), &vmd->irqs[i]); in vmd_suspend()
800 for (i = 0; i < vmd->msix_count; i++) { in vmd_resume()
803 "vmd", &vmd->irqs[i]); in vmd_resume()