112  * Returns offset of the capability, or 0.
120 	     pos > 0;  in virtio_pci_find_capability()
142 	return 0;  in virtio_pci_find_capability()
221  * Return 0 on succeed otherwise fail
235 		if (devid < 0)  in vp_modern_probe()
239 		/* We only own devices >= 0x1000 and <= 0x107f: leave the rest. */  in vp_modern_probe()
240 		if (pci_dev->device < 0x1000 || pci_dev->device > 0x107f)  in vp_modern_probe()
243 		if (pci_dev->device < 0x1040) {  in vp_modern_probe()
249 			/* Modern devices: simply use PCI device id, but start from 0x1040. */  in vp_modern_probe()
250 			mdev->id.device = pci_dev->device - 0x1040;  in vp_modern_probe()
255 	/* check for a common config: if not, use legacy mode (bar 0). */  in vp_modern_probe()
301 			      sizeof(struct virtio_pci_common_cfg), 4, 0,  in vp_modern_probe()
308 					     0, 1,  in vp_modern_probe()
336 							     0, notify_length,  in vp_modern_probe()
349 		mdev->device = vp_modern_map_capability(mdev, device, 0, 4,  in vp_modern_probe()
350 							0, PAGE_SIZE,  in vp_modern_probe()
357 	return 0;  in vp_modern_probe()
402 	vp_iowrite32(0, &cfg->device_feature_select);  in vp_modern_get_features()
423 	vp_iowrite32(0, &cfg->guest_feature_select);  in vp_modern_get_driver_features()
442 	vp_iowrite32(0, &cfg->guest_feature_select);  in vp_modern_set_features()