130 static inline unsigned int index_from_irqs(struct vmd_dev *vmd,  in index_from_irqs()  argument
133 	return irqs - vmd->irqs;  in index_from_irqs()
148 	struct vmd_dev *vmd = irq_data_get_irq_handler_data(data);  in vmd_compose_msi_msg()  local
153 	msg->arch_addr_lo.destid_0_7 = index_from_irqs(vmd, irq);  in vmd_compose_msi_msg()
216 static struct vmd_irq_list *vmd_next_irq(struct vmd_dev *vmd, struct msi_desc *desc)  in vmd_next_irq()  argument
221 	if (vmd->msix_count == 1 + vmd->first_vec)  in vmd_next_irq()
222 		return &vmd->irqs[vmd->first_vec];  in vmd_next_irq()
232 		return &vmd->irqs[vmd->first_vec];  in vmd_next_irq()
236 	best = vmd->first_vec + 1;  in vmd_next_irq()
237 	for (i = best; i < vmd->msix_count; i++)  in vmd_next_irq()
238 		if (vmd->irqs[i].count < vmd->irqs[best].count)  in vmd_next_irq()
240 	vmd->irqs[best].count++;  in vmd_next_irq()
243 	return &vmd->irqs[best];  in vmd_next_irq()
251 	struct vmd_dev *vmd = vmd_from_bus(msi_desc_to_pci_dev(desc)->bus);  in vmd_msi_init()  local
259 	vmdirq->irq = vmd_next_irq(vmd, desc);  in vmd_msi_init()
261 	index = index_from_irqs(vmd, vmdirq->irq);  in vmd_msi_init()
262 	vector = pci_irq_vector(vmd->dev, index);  in vmd_msi_init()
265 			    handle_untracked_irq, vmd, NULL);  in vmd_msi_init()
289 	struct vmd_dev *vmd = vmd_from_bus(pdev->bus);  in vmd_msi_prepare()  local
291 	if (nvec > vmd->msix_count)  in vmd_msi_prepare()
292 		return vmd->msix_count;  in vmd_msi_prepare()
318 static void vmd_set_msi_remapping(struct vmd_dev *vmd, bool enable)  in vmd_set_msi_remapping()  argument
322 	pci_read_config_word(vmd->dev, PCI_REG_VMCONFIG, &reg);  in vmd_set_msi_remapping()
325 	pci_write_config_word(vmd->dev, PCI_REG_VMCONFIG, reg);  in vmd_set_msi_remapping()
328 static int vmd_create_irq_domain(struct vmd_dev *vmd)  in vmd_create_irq_domain()  argument
332 	fn = irq_domain_alloc_named_id_fwnode("VMD-MSI", vmd->sysdata.domain);  in vmd_create_irq_domain()
336 	vmd->irq_domain = pci_msi_create_irq_domain(fn, &vmd_msi_domain_info, NULL);  in vmd_create_irq_domain()
337 	if (!vmd->irq_domain) {  in vmd_create_irq_domain()
345 static void vmd_remove_irq_domain(struct vmd_dev *vmd)  in vmd_remove_irq_domain()  argument
351 	if (!vmd->msix_count)  in vmd_remove_irq_domain()
352 		vmd_set_msi_remapping(vmd, true);  in vmd_remove_irq_domain()
354 	if (vmd->irq_domain) {  in vmd_remove_irq_domain()
355 		struct fwnode_handle *fn = vmd->irq_domain->fwnode;  in vmd_remove_irq_domain()
357 		irq_domain_remove(vmd->irq_domain);  in vmd_remove_irq_domain()
362 static void __iomem *vmd_cfg_addr(struct vmd_dev *vmd, struct pci_bus *bus,  in vmd_cfg_addr()  argument
365 	unsigned int busnr_ecam = bus->number - vmd->busn_start;  in vmd_cfg_addr()
368 	if (offset + len >= resource_size(&vmd->dev->resource[VMD_CFGBAR]))  in vmd_cfg_addr()
371 	return vmd->cfgbar + offset;  in vmd_cfg_addr()
381 	struct vmd_dev *vmd = vmd_from_bus(bus);  in vmd_pci_read()  local
382 	void __iomem *addr = vmd_cfg_addr(vmd, bus, devfn, reg, len);  in vmd_pci_read()
389 	spin_lock_irqsave(&vmd->cfg_lock, flags);  in vmd_pci_read()
404 	spin_unlock_irqrestore(&vmd->cfg_lock, flags);  in vmd_pci_read()
416 	struct vmd_dev *vmd = vmd_from_bus(bus);  in vmd_pci_write()  local
417 	void __iomem *addr = vmd_cfg_addr(vmd, bus, devfn, reg, len);  in vmd_pci_write()
424 	spin_lock_irqsave(&vmd->cfg_lock, flags);  in vmd_pci_write()
442 	spin_unlock_irqrestore(&vmd->cfg_lock, flags);  in vmd_pci_write()
501 static void vmd_attach_resources(struct vmd_dev *vmd)  in vmd_attach_resources()  argument
503 	vmd->dev->resource[VMD_MEMBAR1].child = &vmd->resources[1];  in vmd_attach_resources()
504 	vmd->dev->resource[VMD_MEMBAR2].child = &vmd->resources[2];  in vmd_attach_resources()
507 static void vmd_detach_resources(struct vmd_dev *vmd)  in vmd_detach_resources()  argument
509 	vmd->dev->resource[VMD_MEMBAR1].child = NULL;  in vmd_detach_resources()
510 	vmd->dev->resource[VMD_MEMBAR2].child = NULL;  in vmd_detach_resources()
529 static int vmd_get_phys_offsets(struct vmd_dev *vmd, bool native_hint,  in vmd_get_phys_offsets()  argument
533 	struct pci_dev *dev = vmd->dev;  in vmd_get_phys_offsets()
583 static int vmd_get_bus_number_start(struct vmd_dev *vmd)  in vmd_get_bus_number_start()  argument
585 	struct pci_dev *dev = vmd->dev;  in vmd_get_bus_number_start()
594 			vmd->busn_start = 0;  in vmd_get_bus_number_start()
597 			vmd->busn_start = 128;  in vmd_get_bus_number_start()
600 			vmd->busn_start = 224;  in vmd_get_bus_number_start()
626 static int vmd_alloc_irqs(struct vmd_dev *vmd)  in vmd_alloc_irqs()  argument
628 	struct pci_dev *dev = vmd->dev;  in vmd_alloc_irqs()
631 	vmd->msix_count = pci_msix_vec_count(dev);  in vmd_alloc_irqs()
632 	if (vmd->msix_count < 0)  in vmd_alloc_irqs()
635 	vmd->msix_count = pci_alloc_irq_vectors(dev, vmd->first_vec + 1,  in vmd_alloc_irqs()
636 						vmd->msix_count, PCI_IRQ_MSIX);  in vmd_alloc_irqs()
637 	if (vmd->msix_count < 0)  in vmd_alloc_irqs()
638 		return vmd->msix_count;  in vmd_alloc_irqs()
640 	vmd->irqs = devm_kcalloc(&dev->dev, vmd->msix_count, sizeof(*vmd->irqs),  in vmd_alloc_irqs()
642 	if (!vmd->irqs)  in vmd_alloc_irqs()
645 	for (i = 0; i < vmd->msix_count; i++) {  in vmd_alloc_irqs()
646 		err = init_srcu_struct(&vmd->irqs[i].srcu);  in vmd_alloc_irqs()
650 		INIT_LIST_HEAD(&vmd->irqs[i].irq_list);  in vmd_alloc_irqs()
653 				       "vmd", &vmd->irqs[i]);  in vmd_alloc_irqs()
661 static int vmd_enable_domain(struct vmd_dev *vmd, unsigned long features)  in vmd_enable_domain()  argument
663 	struct pci_sysdata *sd = &vmd->sysdata;  in vmd_enable_domain()
681 		ret = vmd_get_phys_offsets(vmd, true, &offset[0], &offset[1]);  in vmd_enable_domain()
685 		ret = vmd_get_phys_offsets(vmd, false, &offset[0], &offset[1]);  in vmd_enable_domain()
695 		ret = vmd_get_bus_number_start(vmd);  in vmd_enable_domain()
700 	res = &vmd->dev->resource[VMD_CFGBAR];  in vmd_enable_domain()
701 	vmd->resources[0] = (struct resource) {  in vmd_enable_domain()
703 		.start = vmd->busn_start,  in vmd_enable_domain()
704 		.end   = vmd->busn_start + (resource_size(res) >> 20) - 1,  in vmd_enable_domain()
725 	res = &vmd->dev->resource[VMD_MEMBAR1];  in vmd_enable_domain()
730 	vmd->resources[1] = (struct resource) {  in vmd_enable_domain()
738 	res = &vmd->dev->resource[VMD_MEMBAR2];  in vmd_enable_domain()
743 	vmd->resources[2] = (struct resource) {  in vmd_enable_domain()
751 	sd->vmd_dev = vmd->dev;  in vmd_enable_domain()
756 	sd->node = pcibus_to_node(vmd->dev->bus);  in vmd_enable_domain()
766 		ret = vmd_alloc_irqs(vmd);  in vmd_enable_domain()
770 		vmd_set_msi_remapping(vmd, true);  in vmd_enable_domain()
772 		ret = vmd_create_irq_domain(vmd);  in vmd_enable_domain()
780 		irq_domain_update_bus_token(vmd->irq_domain, DOMAIN_BUS_VMD_MSI);  in vmd_enable_domain()
782 		vmd_set_msi_remapping(vmd, false);  in vmd_enable_domain()
785 	pci_add_resource(&resources, &vmd->resources[0]);  in vmd_enable_domain()
786 	pci_add_resource_offset(&resources, &vmd->resources[1], offset[0]);  in vmd_enable_domain()
787 	pci_add_resource_offset(&resources, &vmd->resources[2], offset[1]);  in vmd_enable_domain()
789 	vmd->bus = pci_create_root_bus(&vmd->dev->dev, vmd->busn_start,  in vmd_enable_domain()
791 	if (!vmd->bus) {  in vmd_enable_domain()
793 		vmd_remove_irq_domain(vmd);  in vmd_enable_domain()
797 	vmd_attach_resources(vmd);  in vmd_enable_domain()
798 	if (vmd->irq_domain)  in vmd_enable_domain()
799 		dev_set_msi_domain(&vmd->bus->dev, vmd->irq_domain);  in vmd_enable_domain()
803 	pci_scan_child_bus(vmd->bus);  in vmd_enable_domain()
804 	pci_assign_unassigned_bus_resources(vmd->bus);  in vmd_enable_domain()
811 	list_for_each_entry(child, &vmd->bus->children, node)  in vmd_enable_domain()
814 	pci_bus_add_devices(vmd->bus);  in vmd_enable_domain()
818 	WARN(sysfs_create_link(&vmd->dev->dev.kobj, &vmd->bus->dev.kobj,  in vmd_enable_domain()
826 	struct vmd_dev *vmd;  in vmd_probe()  local
832 	vmd = devm_kzalloc(&dev->dev, sizeof(*vmd), GFP_KERNEL);  in vmd_probe()
833 	if (!vmd)  in vmd_probe()
836 	vmd->dev = dev;  in vmd_probe()
841 	vmd->cfgbar = pcim_iomap(dev, VMD_CFGBAR, 0);  in vmd_probe()
842 	if (!vmd->cfgbar)  in vmd_probe()
851 		vmd->first_vec = 1;  in vmd_probe()
853 	spin_lock_init(&vmd->cfg_lock);  in vmd_probe()
854 	pci_set_drvdata(dev, vmd);  in vmd_probe()
855 	err = vmd_enable_domain(vmd, features);  in vmd_probe()
859 	dev_info(&vmd->dev->dev, "Bound to PCI domain %04x\n",  in vmd_probe()
860 		 vmd->sysdata.domain);  in vmd_probe()
864 static void vmd_cleanup_srcu(struct vmd_dev *vmd)  in vmd_cleanup_srcu()  argument
868 	for (i = 0; i < vmd->msix_count; i++)  in vmd_cleanup_srcu()
869 		cleanup_srcu_struct(&vmd->irqs[i].srcu);  in vmd_cleanup_srcu()
874 	struct vmd_dev *vmd = pci_get_drvdata(dev);  in vmd_remove()  local
876 	sysfs_remove_link(&vmd->dev->dev.kobj, "domain");  in vmd_remove()
877 	pci_stop_root_bus(vmd->bus);  in vmd_remove()
878 	pci_remove_root_bus(vmd->bus);  in vmd_remove()
879 	vmd_cleanup_srcu(vmd);  in vmd_remove()
880 	vmd_detach_resources(vmd);  in vmd_remove()
881 	vmd_remove_irq_domain(vmd);  in vmd_remove()
888 	struct vmd_dev *vmd = pci_get_drvdata(pdev);  in vmd_suspend()  local
891 	for (i = 0; i < vmd->msix_count; i++)  in vmd_suspend()
892 		devm_free_irq(dev, pci_irq_vector(pdev, i), &vmd->irqs[i]);  in vmd_suspend()
900 	struct vmd_dev *vmd = pci_get_drvdata(pdev);  in vmd_resume()  local
903 	for (i = 0; i < vmd->msix_count; i++) {  in vmd_resume()
906 				       "vmd", &vmd->irqs[i]);  in vmd_resume()