26 #define VFIO_PLATFORM_IS_ACPI(vdev) ((vdev)->acpihid != NULL)  argument
50 static int vfio_platform_acpi_probe(struct vfio_platform_device *vdev,  in vfio_platform_acpi_probe()  argument
61 			vdev->name);  in vfio_platform_acpi_probe()
66 	vdev->acpihid = acpi_device_hid(adev);  in vfio_platform_acpi_probe()
68 	return WARN_ON(!vdev->acpihid) ? -EINVAL : 0;  in vfio_platform_acpi_probe()
71 static int vfio_platform_acpi_call_reset(struct vfio_platform_device *vdev,  in vfio_platform_acpi_call_reset()  argument
76 	struct device *dev = vdev->device;  in vfio_platform_acpi_call_reset()
93 static bool vfio_platform_acpi_has_reset(struct vfio_platform_device *vdev)  in vfio_platform_acpi_has_reset()  argument
96 	struct device *dev = vdev->device;  in vfio_platform_acpi_has_reset()
105 static bool vfio_platform_has_reset(struct vfio_platform_device *vdev)  in vfio_platform_has_reset()  argument
107 	if (VFIO_PLATFORM_IS_ACPI(vdev))  in vfio_platform_has_reset()
108 		return vfio_platform_acpi_has_reset(vdev);  in vfio_platform_has_reset()
110 	return vdev->of_reset ? true : false;  in vfio_platform_has_reset()
113 static int vfio_platform_get_reset(struct vfio_platform_device *vdev)  in vfio_platform_get_reset()  argument
115 	if (VFIO_PLATFORM_IS_ACPI(vdev))  in vfio_platform_get_reset()
116 		return vfio_platform_acpi_has_reset(vdev) ? 0 : -ENOENT;  in vfio_platform_get_reset()
118 	vdev->of_reset = vfio_platform_lookup_reset(vdev->compat,  in vfio_platform_get_reset()
119 						    &vdev->reset_module);  in vfio_platform_get_reset()
120 	if (!vdev->of_reset) {  in vfio_platform_get_reset()
121 		request_module("vfio-reset:%s", vdev->compat);  in vfio_platform_get_reset()
122 		vdev->of_reset = vfio_platform_lookup_reset(vdev->compat,  in vfio_platform_get_reset()
123 							&vdev->reset_module);  in vfio_platform_get_reset()
126 	return vdev->of_reset ? 0 : -ENOENT;  in vfio_platform_get_reset()
129 static void vfio_platform_put_reset(struct vfio_platform_device *vdev)  in vfio_platform_put_reset()  argument
131 	if (VFIO_PLATFORM_IS_ACPI(vdev))  in vfio_platform_put_reset()
134 	if (vdev->of_reset)  in vfio_platform_put_reset()
135 		module_put(vdev->reset_module);  in vfio_platform_put_reset()
138 static int vfio_platform_regions_init(struct vfio_platform_device *vdev)  in vfio_platform_regions_init()  argument
142 	while (vdev->get_resource(vdev, cnt))  in vfio_platform_regions_init()
145 	vdev->regions = kcalloc(cnt, sizeof(struct vfio_platform_region),  in vfio_platform_regions_init()
147 	if (!vdev->regions)  in vfio_platform_regions_init()
152 			vdev->get_resource(vdev, i);  in vfio_platform_regions_init()
157 		vdev->regions[i].addr = res->start;  in vfio_platform_regions_init()
158 		vdev->regions[i].size = resource_size(res);  in vfio_platform_regions_init()
159 		vdev->regions[i].flags = 0;  in vfio_platform_regions_init()
163 			vdev->regions[i].type = VFIO_PLATFORM_REGION_TYPE_MMIO;  in vfio_platform_regions_init()
164 			vdev->regions[i].flags |= VFIO_REGION_INFO_FLAG_READ;  in vfio_platform_regions_init()
166 				vdev->regions[i].flags |=  in vfio_platform_regions_init()
173 			if (!(vdev->regions[i].addr & ~PAGE_MASK) &&  in vfio_platform_regions_init()
174 					!(vdev->regions[i].size & ~PAGE_MASK))  in vfio_platform_regions_init()
175 				vdev->regions[i].flags |=  in vfio_platform_regions_init()
180 			vdev->regions[i].type = VFIO_PLATFORM_REGION_TYPE_PIO;  in vfio_platform_regions_init()
187 	vdev->num_regions = cnt;  in vfio_platform_regions_init()
191 	kfree(vdev->regions);  in vfio_platform_regions_init()
195 static void vfio_platform_regions_cleanup(struct vfio_platform_device *vdev)  in vfio_platform_regions_cleanup()  argument
199 	for (i = 0; i < vdev->num_regions; i++)  in vfio_platform_regions_cleanup()
200 		iounmap(vdev->regions[i].ioaddr);  in vfio_platform_regions_cleanup()
202 	vdev->num_regions = 0;  in vfio_platform_regions_cleanup()
203 	kfree(vdev->regions);  in vfio_platform_regions_cleanup()
206 static int vfio_platform_call_reset(struct vfio_platform_device *vdev,  in vfio_platform_call_reset()  argument
209 	if (VFIO_PLATFORM_IS_ACPI(vdev)) {  in vfio_platform_call_reset()
210 		dev_info(vdev->device, "reset\n");  in vfio_platform_call_reset()
211 		return vfio_platform_acpi_call_reset(vdev, extra_dbg);  in vfio_platform_call_reset()
212 	} else if (vdev->of_reset) {  in vfio_platform_call_reset()
213 		dev_info(vdev->device, "reset\n");  in vfio_platform_call_reset()
214 		return vdev->of_reset(vdev);  in vfio_platform_call_reset()
217 	dev_warn(vdev->device, "no reset function found!\n");  in vfio_platform_call_reset()
223 	struct vfio_platform_device *vdev =  in vfio_platform_close_device()  local
224 		container_of(core_vdev, struct vfio_platform_device, vdev);  in vfio_platform_close_device()
228 	ret = vfio_platform_call_reset(vdev, &extra_dbg);  in vfio_platform_close_device()
229 	if (WARN_ON(ret && vdev->reset_required)) {  in vfio_platform_close_device()
231 			vdev->device,  in vfio_platform_close_device()
235 	pm_runtime_put(vdev->device);  in vfio_platform_close_device()
236 	vfio_platform_regions_cleanup(vdev);  in vfio_platform_close_device()
237 	vfio_platform_irq_cleanup(vdev);  in vfio_platform_close_device()
242 	struct vfio_platform_device *vdev =  in vfio_platform_open_device()  local
243 		container_of(core_vdev, struct vfio_platform_device, vdev);  in vfio_platform_open_device()
247 	ret = vfio_platform_regions_init(vdev);  in vfio_platform_open_device()
251 	ret = vfio_platform_irq_init(vdev);  in vfio_platform_open_device()
255 	ret = pm_runtime_get_sync(vdev->device);  in vfio_platform_open_device()
259 	ret = vfio_platform_call_reset(vdev, &extra_dbg);  in vfio_platform_open_device()
260 	if (ret && vdev->reset_required) {  in vfio_platform_open_device()
262 			vdev->device,  in vfio_platform_open_device()
270 	pm_runtime_put(vdev->device);  in vfio_platform_open_device()
271 	vfio_platform_irq_cleanup(vdev);  in vfio_platform_open_device()
273 	vfio_platform_regions_cleanup(vdev);  in vfio_platform_open_device()
280 	struct vfio_platform_device *vdev =  in vfio_platform_ioctl()  local
281 		container_of(core_vdev, struct vfio_platform_device, vdev);  in vfio_platform_ioctl()
296 		if (vfio_platform_has_reset(vdev))  in vfio_platform_ioctl()
297 			vdev->flags |= VFIO_DEVICE_FLAGS_RESET;  in vfio_platform_ioctl()
298 		info.flags = vdev->flags;  in vfio_platform_ioctl()
299 		info.num_regions = vdev->num_regions;  in vfio_platform_ioctl()
300 		info.num_irqs = vdev->num_irqs;  in vfio_platform_ioctl()
316 		if (info.index >= vdev->num_regions)  in vfio_platform_ioctl()
321 		info.size = vdev->regions[info.index].size;  in vfio_platform_ioctl()
322 		info.flags = vdev->regions[info.index].flags;  in vfio_platform_ioctl()
338 		if (info.index >= vdev->num_irqs)  in vfio_platform_ioctl()
341 		info.flags = vdev->irqs[info.index].flags;  in vfio_platform_ioctl()
342 		info.count = vdev->irqs[info.index].count;  in vfio_platform_ioctl()
358 		ret = vfio_set_irqs_validate_and_prepare(&hdr, vdev->num_irqs,  in vfio_platform_ioctl()
359 						 vdev->num_irqs, &data_size);  in vfio_platform_ioctl()
370 		mutex_lock(&vdev->igate);  in vfio_platform_ioctl()
372 		ret = vfio_platform_set_irqs_ioctl(vdev, hdr.flags, hdr.index,  in vfio_platform_ioctl()
374 		mutex_unlock(&vdev->igate);  in vfio_platform_ioctl()
380 		return vfio_platform_call_reset(vdev, NULL);  in vfio_platform_ioctl()
444 	struct vfio_platform_device *vdev =  in vfio_platform_read()  local
445 		container_of(core_vdev, struct vfio_platform_device, vdev);  in vfio_platform_read()
449 	if (index >= vdev->num_regions)  in vfio_platform_read()
452 	if (!(vdev->regions[index].flags & VFIO_REGION_INFO_FLAG_READ))  in vfio_platform_read()
455 	if (vdev->regions[index].type & VFIO_PLATFORM_REGION_TYPE_MMIO)  in vfio_platform_read()
456 		return vfio_platform_read_mmio(&vdev->regions[index],  in vfio_platform_read()
458 	else if (vdev->regions[index].type & VFIO_PLATFORM_REGION_TYPE_PIO)  in vfio_platform_read()
521 	struct vfio_platform_device *vdev =  in vfio_platform_write()  local
522 		container_of(core_vdev, struct vfio_platform_device, vdev);  in vfio_platform_write()
526 	if (index >= vdev->num_regions)  in vfio_platform_write()
529 	if (!(vdev->regions[index].flags & VFIO_REGION_INFO_FLAG_WRITE))  in vfio_platform_write()
532 	if (vdev->regions[index].type & VFIO_PLATFORM_REGION_TYPE_MMIO)  in vfio_platform_write()
533 		return vfio_platform_write_mmio(&vdev->regions[index],  in vfio_platform_write()
535 	else if (vdev->regions[index].type & VFIO_PLATFORM_REGION_TYPE_PIO)  in vfio_platform_write()
563 	struct vfio_platform_device *vdev =  in vfio_platform_mmap()  local
564 		container_of(core_vdev, struct vfio_platform_device, vdev);  in vfio_platform_mmap()
573 	if (index >= vdev->num_regions)  in vfio_platform_mmap()
580 	if (!(vdev->regions[index].flags & VFIO_REGION_INFO_FLAG_MMAP))  in vfio_platform_mmap()
583 	if (!(vdev->regions[index].flags & VFIO_REGION_INFO_FLAG_READ)  in vfio_platform_mmap()
587 	if (!(vdev->regions[index].flags & VFIO_REGION_INFO_FLAG_WRITE)  in vfio_platform_mmap()
591 	vma->vm_private_data = vdev;  in vfio_platform_mmap()
593 	if (vdev->regions[index].type & VFIO_PLATFORM_REGION_TYPE_MMIO)  in vfio_platform_mmap()
594 		return vfio_platform_mmap_mmio(vdev->regions[index], vma);  in vfio_platform_mmap()
596 	else if (vdev->regions[index].type & VFIO_PLATFORM_REGION_TYPE_PIO)  in vfio_platform_mmap()
612 static int vfio_platform_of_probe(struct vfio_platform_device *vdev,  in vfio_platform_of_probe()  argument
618 					  &vdev->compat);  in vfio_platform_of_probe()
620 		dev_err(dev, "Cannot retrieve compat for %s\n", vdev->name);  in vfio_platform_of_probe()
642 int vfio_platform_probe_common(struct vfio_platform_device *vdev,  in vfio_platform_probe_common()  argument
648 	vfio_init_group_dev(&vdev->vdev, dev, &vfio_platform_ops);  in vfio_platform_probe_common()
650 	ret = vfio_platform_acpi_probe(vdev, dev);  in vfio_platform_probe_common()
652 		ret = vfio_platform_of_probe(vdev, dev);  in vfio_platform_probe_common()
657 	vdev->device = dev;  in vfio_platform_probe_common()
659 	ret = vfio_platform_get_reset(vdev);  in vfio_platform_probe_common()
660 	if (ret && vdev->reset_required) {  in vfio_platform_probe_common()
662 			vdev->name);  in vfio_platform_probe_common()
668 		dev_err(dev, "No IOMMU group for device %s\n", vdev->name);  in vfio_platform_probe_common()
673 	ret = vfio_register_group_dev(&vdev->vdev);  in vfio_platform_probe_common()
677 	mutex_init(&vdev->igate);  in vfio_platform_probe_common()
685 	vfio_platform_put_reset(vdev);  in vfio_platform_probe_common()
687 	vfio_uninit_group_dev(&vdev->vdev);  in vfio_platform_probe_common()
692 void vfio_platform_remove_common(struct vfio_platform_device *vdev)  in vfio_platform_remove_common()  argument
694 	vfio_unregister_group_dev(&vdev->vdev);  in vfio_platform_remove_common()
696 	pm_runtime_disable(vdev->device);  in vfio_platform_remove_common()
697 	vfio_platform_put_reset(vdev);  in vfio_platform_remove_common()
698 	vfio_uninit_group_dev(&vdev->vdev);  in vfio_platform_remove_common()
699 	vfio_iommu_group_put(vdev->vdev.dev->iommu_group, vdev->vdev.dev);  in vfio_platform_remove_common()