130 	struct vga_device *vgadev;  in vgadev_find()  local
132 	list_for_each_entry(vgadev, &vga_list, list)  in vgadev_find()
133 		if (pdev == vgadev->pdev)  in vgadev_find()
134 			return vgadev;  in vgadev_find()
232 static struct vga_device *__vga_tryget(struct vga_device *vgadev,  in __vga_tryget()  argument
235 	struct device *dev = &vgadev->pdev->dev;  in __vga_tryget()
245 	    (vgadev->decodes & VGA_RSRC_LEGACY_IO))  in __vga_tryget()
248 	    (vgadev->decodes & VGA_RSRC_LEGACY_MEM))  in __vga_tryget()
252 	vgaarb_dbg(dev, "%s: owns: %d\n", __func__, vgadev->owns);  in __vga_tryget()
255 	wants = rsrc & ~vgadev->owns;  in __vga_tryget()
274 		if (vgadev == conflict)  in __vga_tryget()
283 		if (vgadev->pdev->bus != conflict->pdev->bus) {  in __vga_tryget()
344 	if (!vgadev->bridge_has_one_vga) {  in __vga_tryget()
354 	pci_set_vga_state(vgadev->pdev, true, pci_bits, flags);  in __vga_tryget()
356 	vgadev->owns |= wants;  in __vga_tryget()
358 	vgadev->locks |= (rsrc & VGA_RSRC_LEGACY_MASK);  in __vga_tryget()
360 		vgadev->io_lock_cnt++;  in __vga_tryget()
362 		vgadev->mem_lock_cnt++;  in __vga_tryget()
364 		vgadev->io_norm_cnt++;  in __vga_tryget()
366 		vgadev->mem_norm_cnt++;  in __vga_tryget()
371 static void __vga_put(struct vga_device *vgadev, unsigned int rsrc)  in __vga_put()  argument
373 	struct device *dev = &vgadev->pdev->dev;  in __vga_put()
374 	unsigned int old_locks = vgadev->locks;  in __vga_put()
381 	if ((rsrc & VGA_RSRC_NORMAL_IO) && vgadev->io_norm_cnt > 0) {  in __vga_put()
382 		vgadev->io_norm_cnt--;  in __vga_put()
383 		if (vgadev->decodes & VGA_RSRC_LEGACY_IO)  in __vga_put()
386 	if ((rsrc & VGA_RSRC_NORMAL_MEM) && vgadev->mem_norm_cnt > 0) {  in __vga_put()
387 		vgadev->mem_norm_cnt--;  in __vga_put()
388 		if (vgadev->decodes & VGA_RSRC_LEGACY_MEM)  in __vga_put()
391 	if ((rsrc & VGA_RSRC_LEGACY_IO) && vgadev->io_lock_cnt > 0)  in __vga_put()
392 		vgadev->io_lock_cnt--;  in __vga_put()
393 	if ((rsrc & VGA_RSRC_LEGACY_MEM) && vgadev->mem_lock_cnt > 0)  in __vga_put()
394 		vgadev->mem_lock_cnt--;  in __vga_put()
399 	if (vgadev->io_lock_cnt == 0)  in __vga_put()
400 		vgadev->locks &= ~VGA_RSRC_LEGACY_IO;  in __vga_put()
401 	if (vgadev->mem_lock_cnt == 0)  in __vga_put()
402 		vgadev->locks &= ~VGA_RSRC_LEGACY_MEM;  in __vga_put()
407 	if (old_locks != vgadev->locks)  in __vga_put()
447 	struct vga_device *vgadev, *conflict;  in vga_get()  local
461 		vgadev = vgadev_find(pdev);  in vga_get()
462 		if (vgadev == NULL) {  in vga_get()
467 		conflict = __vga_tryget(vgadev, rsrc);  in vga_get()
514 	struct vga_device *vgadev;  in vga_tryget()  local
526 	vgadev = vgadev_find(pdev);  in vga_tryget()
527 	if (vgadev == NULL) {  in vga_tryget()
531 	if (__vga_tryget(vgadev, rsrc))  in vga_tryget()
550 	struct vga_device *vgadev;  in vga_put()  local
559 	vgadev = vgadev_find(pdev);  in vga_put()
560 	if (vgadev == NULL)  in vga_put()
562 	__vga_put(vgadev, rsrc);  in vga_put()
577 static void vga_arbiter_check_bridge_sharing(struct vga_device *vgadev)  in vga_arbiter_check_bridge_sharing()  argument
583 	vgadev->bridge_has_one_vga = true;  in vga_arbiter_check_bridge_sharing()
589 	new_bus = vgadev->pdev->bus;  in vga_arbiter_check_bridge_sharing()
617 				if (bridge && bridge == vgadev->pdev->bus->self)  in vga_arbiter_check_bridge_sharing()
618 					vgadev->bridge_has_one_vga = false;  in vga_arbiter_check_bridge_sharing()
635 	struct vga_device *vgadev;  in vga_arbiter_add_pci_device()  local
646 	vgadev = kzalloc(sizeof(struct vga_device), GFP_KERNEL);  in vga_arbiter_add_pci_device()
647 	if (vgadev == NULL) {  in vga_arbiter_add_pci_device()
662 	vgadev->pdev = pdev;  in vga_arbiter_add_pci_device()
665 	vgadev->decodes = VGA_RSRC_LEGACY_IO | VGA_RSRC_LEGACY_MEM |  in vga_arbiter_add_pci_device()
675 		vgadev->owns |= VGA_RSRC_LEGACY_IO;  in vga_arbiter_add_pci_device()
677 		vgadev->owns |= VGA_RSRC_LEGACY_MEM;  in vga_arbiter_add_pci_device()
688 				vgadev->owns = 0;  in vga_arbiter_add_pci_device()
699 	    ((vgadev->owns & VGA_RSRC_LEGACY_MASK) == VGA_RSRC_LEGACY_MASK)) {  in vga_arbiter_add_pci_device()
704 	vga_arbiter_check_bridge_sharing(vgadev);  in vga_arbiter_add_pci_device()
707 	list_add_tail(&vgadev->list, &vga_list);  in vga_arbiter_add_pci_device()
710 		vga_iostate_to_str(vgadev->decodes),  in vga_arbiter_add_pci_device()
711 		vga_iostate_to_str(vgadev->owns),  in vga_arbiter_add_pci_device()
712 		vga_iostate_to_str(vgadev->locks));  in vga_arbiter_add_pci_device()
718 	kfree(vgadev);  in vga_arbiter_add_pci_device()
724 	struct vga_device *vgadev;  in vga_arbiter_del_pci_device()  local
729 	vgadev = vgadev_find(pdev);  in vga_arbiter_del_pci_device()
730 	if (vgadev == NULL) {  in vga_arbiter_del_pci_device()
738 	if (vgadev->decodes & (VGA_RSRC_LEGACY_IO | VGA_RSRC_LEGACY_MEM))  in vga_arbiter_del_pci_device()
742 	list_del(&vgadev->list);  in vga_arbiter_del_pci_device()
753 	kfree(vgadev);  in vga_arbiter_del_pci_device()
758 static inline void vga_update_device_decodes(struct vga_device *vgadev,  in vga_update_device_decodes()  argument
761 	struct device *dev = &vgadev->pdev->dev;  in vga_update_device_decodes()
764 	old_decodes = vgadev->decodes;  in vga_update_device_decodes()
766 	decodes_unlocked = vgadev->locks & decodes_removed;  in vga_update_device_decodes()
767 	vgadev->decodes = new_decodes;  in vga_update_device_decodes()
771 		vga_iostate_to_str(vgadev->decodes),  in vga_update_device_decodes()
772 		vga_iostate_to_str(vgadev->owns));  in vga_update_device_decodes()
777 			vgadev->io_lock_cnt = 0;  in vga_update_device_decodes()
779 			vgadev->mem_lock_cnt = 0;  in vga_update_device_decodes()
780 		__vga_put(vgadev, decodes_unlocked);  in vga_update_device_decodes()
797 	struct vga_device *vgadev;  in __vga_set_legacy_decoding()  local
803 	vgadev = vgadev_find(pdev);  in __vga_set_legacy_decoding()
804 	if (vgadev == NULL)  in __vga_set_legacy_decoding()
808 	if (userspace && vgadev->set_decode)  in __vga_set_legacy_decoding()
812 	vga_update_device_decodes(vgadev, decodes);  in __vga_set_legacy_decoding()
867 	struct vga_device *vgadev;  in vga_client_register()  local
871 	vgadev = vgadev_find(pdev);  in vga_client_register()
872 	if (!vgadev)  in vga_client_register()
875 	vgadev->set_decode = set_decode;  in vga_client_register()
986 	struct vga_device *vgadev;  in vga_arb_read()  local
1011 	vgadev = vgadev_find(pdev);  in vga_arb_read()
1012 	if (vgadev == NULL) {  in vga_arb_read()
1027 		       vga_iostate_to_str(vgadev->decodes),  in vga_arb_read()
1028 		       vga_iostate_to_str(vgadev->owns),  in vga_arb_read()
1029 		       vga_iostate_to_str(vgadev->locks),  in vga_arb_read()
1030 		       vgadev->io_lock_cnt, vgadev->mem_lock_cnt);  in vga_arb_read()
1206 		struct vga_device *vgadev;  in vga_arb_write()  local
1234 		vgadev = vgadev_find(pdev);  in vga_arb_write()
1235 		pr_debug("vgadev %p\n", vgadev);  in vga_arb_write()
1236 		if (vgadev == NULL) {  in vga_arb_write()
1371 	struct vga_device *vgadev;  in vga_arbiter_notify_clients()  local
1380 	list_for_each_entry(vgadev, &vga_list, list) {  in vga_arbiter_notify_clients()
1385 		if (vgadev->set_decode) {  in vga_arbiter_notify_clients()
1386 			new_decodes = vgadev->set_decode(vgadev->pdev,  in vga_arbiter_notify_clients()
1388 			vga_update_device_decodes(vgadev, new_decodes);  in vga_arbiter_notify_clients()
1450 	struct vga_device *vgadev;  in vga_arb_select_default_device()  local
1465 	list_for_each_entry(vgadev, &vga_list, list) {  in vga_arb_select_default_device()
1466 		struct device *dev = &vgadev->pdev->dev;  in vga_arb_select_default_device()
1478 			flags = pci_resource_flags(vgadev->pdev, i);  in vga_arb_select_default_device()
1483 			start = pci_resource_start(vgadev->pdev, i);  in vga_arb_select_default_device()
1484 			end  = pci_resource_end(vgadev->pdev, i);  in vga_arb_select_default_device()
1494 			else if (vgadev->pdev != vga_default_device())  in vga_arb_select_default_device()
1496 			vga_set_default_device(vgadev->pdev);  in vga_arb_select_default_device()
1502 		list_for_each_entry_reverse(vgadev, &vga_list, list) {  in vga_arb_select_default_device()
1503 			struct device *dev = &vgadev->pdev->dev;  in vga_arb_select_default_device()
1506 			pdev = vgadev->pdev;  in vga_arb_select_default_device()
1523 		vgadev = list_first_entry_or_null(&vga_list,  in vga_arb_select_default_device()
1525 		if (vgadev) {  in vga_arb_select_default_device()
1526 			struct device *dev = &vgadev->pdev->dev;  in vga_arb_select_default_device()
1528 			vga_set_default_device(vgadev->pdev);  in vga_arb_select_default_device()
1537 	struct vga_device *vgadev;  in vga_arb_device_init()  local
1553 	list_for_each_entry(vgadev, &vga_list, list) {  in vga_arb_device_init()
1554 		struct device *dev = &vgadev->pdev->dev;  in vga_arb_device_init()
1556 		if (vgadev->bridge_has_one_vga)  in vga_arb_device_init()