28 static int vfio_platform_regions_init(struct vfio_platform_device *vdev)  in vfio_platform_regions_init()  argument
32 	while (vdev->get_resource(vdev, cnt))  in vfio_platform_regions_init()
35 	vdev->regions = kcalloc(cnt, sizeof(struct vfio_platform_region),  in vfio_platform_regions_init()
37 	if (!vdev->regions)  in vfio_platform_regions_init()
42 			vdev->get_resource(vdev, i);  in vfio_platform_regions_init()
47 		vdev->regions[i].addr = res->start;  in vfio_platform_regions_init()
48 		vdev->regions[i].size = resource_size(res);  in vfio_platform_regions_init()
49 		vdev->regions[i].flags = 0;  in vfio_platform_regions_init()
53 			vdev->regions[i].type = VFIO_PLATFORM_REGION_TYPE_MMIO;  in vfio_platform_regions_init()
54 			vdev->regions[i].flags |= VFIO_REGION_INFO_FLAG_READ;  in vfio_platform_regions_init()
56 				vdev->regions[i].flags |=  in vfio_platform_regions_init()
63 			if (!(vdev->regions[i].addr & ~PAGE_MASK) &&  in vfio_platform_regions_init()
64 					!(vdev->regions[i].size & ~PAGE_MASK))  in vfio_platform_regions_init()
65 				vdev->regions[i].flags |=  in vfio_platform_regions_init()
70 			vdev->regions[i].type = VFIO_PLATFORM_REGION_TYPE_PIO;  in vfio_platform_regions_init()
77 	vdev->num_regions = cnt;  in vfio_platform_regions_init()
81 	kfree(vdev->regions);  in vfio_platform_regions_init()
85 static void vfio_platform_regions_cleanup(struct vfio_platform_device *vdev)  in vfio_platform_regions_cleanup()  argument
89 	for (i = 0; i < vdev->num_regions; i++)  in vfio_platform_regions_cleanup()
90 		iounmap(vdev->regions[i].ioaddr);  in vfio_platform_regions_cleanup()
92 	vdev->num_regions = 0;  in vfio_platform_regions_cleanup()
93 	kfree(vdev->regions);  in vfio_platform_regions_cleanup()
98 	struct vfio_platform_device *vdev = device_data;  in vfio_platform_release()  local
102 	if (!(--vdev->refcnt)) {  in vfio_platform_release()
103 		vfio_platform_regions_cleanup(vdev);  in vfio_platform_release()
104 		vfio_platform_irq_cleanup(vdev);  in vfio_platform_release()
114 	struct vfio_platform_device *vdev = device_data;  in vfio_platform_open()  local
122 	if (!vdev->refcnt) {  in vfio_platform_open()
123 		ret = vfio_platform_regions_init(vdev);  in vfio_platform_open()
127 		ret = vfio_platform_irq_init(vdev);  in vfio_platform_open()
132 	vdev->refcnt++;  in vfio_platform_open()
138 	vfio_platform_regions_cleanup(vdev);  in vfio_platform_open()
148 	struct vfio_platform_device *vdev = device_data;  in vfio_platform_ioctl()  local
162 		info.flags = vdev->flags;  in vfio_platform_ioctl()
163 		info.num_regions = vdev->num_regions;  in vfio_platform_ioctl()
164 		info.num_irqs = vdev->num_irqs;  in vfio_platform_ioctl()
180 		if (info.index >= vdev->num_regions)  in vfio_platform_ioctl()
185 		info.size = vdev->regions[info.index].size;  in vfio_platform_ioctl()
186 		info.flags = vdev->regions[info.index].flags;  in vfio_platform_ioctl()
202 		if (info.index >= vdev->num_irqs)  in vfio_platform_ioctl()
205 		info.flags = vdev->irqs[info.index].flags;  in vfio_platform_ioctl()
206 		info.count = vdev->irqs[info.index].count;  in vfio_platform_ioctl()
224 		if (hdr.index >= vdev->num_irqs)  in vfio_platform_ioctl()
249 		mutex_lock(&vdev->igate);  in vfio_platform_ioctl()
251 		ret = vfio_platform_set_irqs_ioctl(vdev, hdr.flags, hdr.index,  in vfio_platform_ioctl()
253 		mutex_unlock(&vdev->igate);  in vfio_platform_ioctl()
322 	struct vfio_platform_device *vdev = device_data;  in vfio_platform_read()  local
326 	if (index >= vdev->num_regions)  in vfio_platform_read()
329 	if (!(vdev->regions[index].flags & VFIO_REGION_INFO_FLAG_READ))  in vfio_platform_read()
332 	if (vdev->regions[index].type & VFIO_PLATFORM_REGION_TYPE_MMIO)  in vfio_platform_read()
333 		return vfio_platform_read_mmio(vdev->regions[index],  in vfio_platform_read()
335 	else if (vdev->regions[index].type & VFIO_PLATFORM_REGION_TYPE_PIO)  in vfio_platform_read()
398 	struct vfio_platform_device *vdev = device_data;  in vfio_platform_write()  local
402 	if (index >= vdev->num_regions)  in vfio_platform_write()
405 	if (!(vdev->regions[index].flags & VFIO_REGION_INFO_FLAG_WRITE))  in vfio_platform_write()
408 	if (vdev->regions[index].type & VFIO_PLATFORM_REGION_TYPE_MMIO)  in vfio_platform_write()
409 		return vfio_platform_write_mmio(vdev->regions[index],  in vfio_platform_write()
411 	else if (vdev->regions[index].type & VFIO_PLATFORM_REGION_TYPE_PIO)  in vfio_platform_write()
439 	struct vfio_platform_device *vdev = device_data;  in vfio_platform_mmap()  local
448 	if (index >= vdev->num_regions)  in vfio_platform_mmap()
455 	if (!(vdev->regions[index].flags & VFIO_REGION_INFO_FLAG_MMAP))  in vfio_platform_mmap()
458 	if (!(vdev->regions[index].flags & VFIO_REGION_INFO_FLAG_READ)  in vfio_platform_mmap()
462 	if (!(vdev->regions[index].flags & VFIO_REGION_INFO_FLAG_WRITE)  in vfio_platform_mmap()
466 	vma->vm_private_data = vdev;  in vfio_platform_mmap()
468 	if (vdev->regions[index].type & VFIO_PLATFORM_REGION_TYPE_MMIO)  in vfio_platform_mmap()
469 		return vfio_platform_mmap_mmio(vdev->regions[index], vma);  in vfio_platform_mmap()
471 	else if (vdev->regions[index].type & VFIO_PLATFORM_REGION_TYPE_PIO)  in vfio_platform_mmap()
487 int vfio_platform_probe_common(struct vfio_platform_device *vdev,  in vfio_platform_probe_common()  argument
493 	if (!vdev)  in vfio_platform_probe_common()
498 		pr_err("VFIO: No IOMMU group for device %s\n", vdev->name);  in vfio_platform_probe_common()
502 	ret = vfio_add_group_dev(dev, &vfio_platform_ops, vdev);  in vfio_platform_probe_common()
508 	mutex_init(&vdev->igate);  in vfio_platform_probe_common()
516 	struct vfio_platform_device *vdev;  in vfio_platform_remove_common()  local
518 	vdev = vfio_del_group_dev(dev);  in vfio_platform_remove_common()
519 	if (vdev)  in vfio_platform_remove_common()
522 	return vdev;  in vfio_platform_remove_common()