108 	struct vga_device *vgadev;  in vgadev_find()  local
110 	list_for_each_entry(vgadev, &vga_list, list)  in vgadev_find()
111 		if (pdev == vgadev->pdev)  in vgadev_find()
112 			return vgadev;  in vgadev_find()
210 static struct vga_device *__vga_tryget(struct vga_device *vgadev,  in __vga_tryget()  argument
213 	struct device *dev = &vgadev->pdev->dev;  in __vga_tryget()
223 	    (vgadev->decodes & VGA_RSRC_LEGACY_IO))  in __vga_tryget()
226 	    (vgadev->decodes & VGA_RSRC_LEGACY_MEM))  in __vga_tryget()
230 	vgaarb_dbg(dev, "%s: owns: %d\n", __func__, vgadev->owns);  in __vga_tryget()
233 	wants = rsrc & ~vgadev->owns;  in __vga_tryget()
252 		if (vgadev == conflict)  in __vga_tryget()
261 		if (vgadev->pdev->bus != conflict->pdev->bus) {  in __vga_tryget()
322 	if (!vgadev->bridge_has_one_vga) {  in __vga_tryget()
332 	pci_set_vga_state(vgadev->pdev, true, pci_bits, flags);  in __vga_tryget()
334 	vgadev->owns |= wants;  in __vga_tryget()
336 	vgadev->locks |= (rsrc & VGA_RSRC_LEGACY_MASK);  in __vga_tryget()
338 		vgadev->io_lock_cnt++;  in __vga_tryget()
340 		vgadev->mem_lock_cnt++;  in __vga_tryget()
342 		vgadev->io_norm_cnt++;  in __vga_tryget()
344 		vgadev->mem_norm_cnt++;  in __vga_tryget()
349 static void __vga_put(struct vga_device *vgadev, unsigned int rsrc)  in __vga_put()  argument
351 	struct device *dev = &vgadev->pdev->dev;  in __vga_put()
352 	unsigned int old_locks = vgadev->locks;  in __vga_put()
359 	if ((rsrc & VGA_RSRC_NORMAL_IO) && vgadev->io_norm_cnt > 0) {  in __vga_put()
360 		vgadev->io_norm_cnt--;  in __vga_put()
361 		if (vgadev->decodes & VGA_RSRC_LEGACY_IO)  in __vga_put()
364 	if ((rsrc & VGA_RSRC_NORMAL_MEM) && vgadev->mem_norm_cnt > 0) {  in __vga_put()
365 		vgadev->mem_norm_cnt--;  in __vga_put()
366 		if (vgadev->decodes & VGA_RSRC_LEGACY_MEM)  in __vga_put()
369 	if ((rsrc & VGA_RSRC_LEGACY_IO) && vgadev->io_lock_cnt > 0)  in __vga_put()
370 		vgadev->io_lock_cnt--;  in __vga_put()
371 	if ((rsrc & VGA_RSRC_LEGACY_MEM) && vgadev->mem_lock_cnt > 0)  in __vga_put()
372 		vgadev->mem_lock_cnt--;  in __vga_put()
377 	if (vgadev->io_lock_cnt == 0)  in __vga_put()
378 		vgadev->locks &= ~VGA_RSRC_LEGACY_IO;  in __vga_put()
379 	if (vgadev->mem_lock_cnt == 0)  in __vga_put()
380 		vgadev->locks &= ~VGA_RSRC_LEGACY_MEM;  in __vga_put()
385 	if (old_locks != vgadev->locks)  in __vga_put()
425 	struct vga_device *vgadev, *conflict;  in vga_get()  local
439 		vgadev = vgadev_find(pdev);  in vga_get()
440 		if (vgadev == NULL) {  in vga_get()
445 		conflict = __vga_tryget(vgadev, rsrc);  in vga_get()
492 	struct vga_device *vgadev;  in vga_tryget()  local
504 	vgadev = vgadev_find(pdev);  in vga_tryget()
505 	if (vgadev == NULL) {  in vga_tryget()
509 	if (__vga_tryget(vgadev, rsrc))  in vga_tryget()
528 	struct vga_device *vgadev;  in vga_put()  local
537 	vgadev = vgadev_find(pdev);  in vga_put()
538 	if (vgadev == NULL)  in vga_put()
540 	__vga_put(vgadev, rsrc);  in vga_put()
600 static bool vga_is_boot_device(struct vga_device *vgadev)  in vga_is_boot_device()  argument
603 	struct pci_dev *pdev = vgadev->pdev;  in vga_is_boot_device()
623 		vgadev->is_firmware_default = true;  in vga_is_boot_device()
640 	if ((vgadev->owns & VGA_RSRC_LEGACY_MASK) == VGA_RSRC_LEGACY_MASK)  in vga_is_boot_device()
693 static void vga_arbiter_check_bridge_sharing(struct vga_device *vgadev)  in vga_arbiter_check_bridge_sharing()  argument
699 	vgadev->bridge_has_one_vga = true;  in vga_arbiter_check_bridge_sharing()
702 		vgaarb_info(&vgadev->pdev->dev, "bridge control possible\n");  in vga_arbiter_check_bridge_sharing()
707 	new_bus = vgadev->pdev->bus;  in vga_arbiter_check_bridge_sharing()
735 				if (bridge && bridge == vgadev->pdev->bus->self)  in vga_arbiter_check_bridge_sharing()
736 					vgadev->bridge_has_one_vga = false;  in vga_arbiter_check_bridge_sharing()
744 	if (vgadev->bridge_has_one_vga)  in vga_arbiter_check_bridge_sharing()
745 		vgaarb_info(&vgadev->pdev->dev, "bridge control possible\n");  in vga_arbiter_check_bridge_sharing()
747 		vgaarb_info(&vgadev->pdev->dev, "no bridge control possible\n");  in vga_arbiter_check_bridge_sharing()
758 	struct vga_device *vgadev;  in vga_arbiter_add_pci_device()  local
769 	vgadev = kzalloc(sizeof(struct vga_device), GFP_KERNEL);  in vga_arbiter_add_pci_device()
770 	if (vgadev == NULL) {  in vga_arbiter_add_pci_device()
785 	vgadev->pdev = pdev;  in vga_arbiter_add_pci_device()
788 	vgadev->decodes = VGA_RSRC_LEGACY_IO | VGA_RSRC_LEGACY_MEM |  in vga_arbiter_add_pci_device()
798 		vgadev->owns |= VGA_RSRC_LEGACY_IO;  in vga_arbiter_add_pci_device()
800 		vgadev->owns |= VGA_RSRC_LEGACY_MEM;  in vga_arbiter_add_pci_device()
811 				vgadev->owns = 0;  in vga_arbiter_add_pci_device()
818 	if (vga_is_boot_device(vgadev)) {  in vga_arbiter_add_pci_device()
825 	vga_arbiter_check_bridge_sharing(vgadev);  in vga_arbiter_add_pci_device()
828 	list_add_tail(&vgadev->list, &vga_list);  in vga_arbiter_add_pci_device()
831 		vga_iostate_to_str(vgadev->decodes),  in vga_arbiter_add_pci_device()
832 		vga_iostate_to_str(vgadev->owns),  in vga_arbiter_add_pci_device()
833 		vga_iostate_to_str(vgadev->locks));  in vga_arbiter_add_pci_device()
839 	kfree(vgadev);  in vga_arbiter_add_pci_device()
845 	struct vga_device *vgadev;  in vga_arbiter_del_pci_device()  local
850 	vgadev = vgadev_find(pdev);  in vga_arbiter_del_pci_device()
851 	if (vgadev == NULL) {  in vga_arbiter_del_pci_device()
859 	if (vgadev->decodes & (VGA_RSRC_LEGACY_IO | VGA_RSRC_LEGACY_MEM))  in vga_arbiter_del_pci_device()
863 	list_del(&vgadev->list);  in vga_arbiter_del_pci_device()
870 	kfree(vgadev);  in vga_arbiter_del_pci_device()
875 static inline void vga_update_device_decodes(struct vga_device *vgadev,  in vga_update_device_decodes()  argument
878 	struct device *dev = &vgadev->pdev->dev;  in vga_update_device_decodes()
881 	old_decodes = vgadev->decodes;  in vga_update_device_decodes()
883 	decodes_unlocked = vgadev->locks & decodes_removed;  in vga_update_device_decodes()
884 	vgadev->decodes = new_decodes;  in vga_update_device_decodes()
888 		vga_iostate_to_str(vgadev->decodes),  in vga_update_device_decodes()
889 		vga_iostate_to_str(vgadev->owns));  in vga_update_device_decodes()
894 			vgadev->io_lock_cnt = 0;  in vga_update_device_decodes()
896 			vgadev->mem_lock_cnt = 0;  in vga_update_device_decodes()
897 		__vga_put(vgadev, decodes_unlocked);  in vga_update_device_decodes()
914 	struct vga_device *vgadev;  in __vga_set_legacy_decoding()  local
920 	vgadev = vgadev_find(pdev);  in __vga_set_legacy_decoding()
921 	if (vgadev == NULL)  in __vga_set_legacy_decoding()
925 	if (userspace && vgadev->set_decode)  in __vga_set_legacy_decoding()
929 	vga_update_device_decodes(vgadev, decodes);  in __vga_set_legacy_decoding()
984 	struct vga_device *vgadev;  in vga_client_register()  local
988 	vgadev = vgadev_find(pdev);  in vga_client_register()
989 	if (!vgadev)  in vga_client_register()
992 	vgadev->set_decode = set_decode;  in vga_client_register()
1103 	struct vga_device *vgadev;  in vga_arb_read()  local
1126 	vgadev = vgadev_find(pdev);  in vga_arb_read()
1127 	if (vgadev == NULL) {  in vga_arb_read()
1140 		       vga_iostate_to_str(vgadev->decodes),  in vga_arb_read()
1141 		       vga_iostate_to_str(vgadev->owns),  in vga_arb_read()
1142 		       vga_iostate_to_str(vgadev->locks),  in vga_arb_read()
1143 		       vgadev->io_lock_cnt, vgadev->mem_lock_cnt);  in vga_arb_read()
1319 		struct vga_device *vgadev;  in vga_arb_write()  local
1347 		vgadev = vgadev_find(pdev);  in vga_arb_write()
1348 		pr_debug("vgadev %p\n", vgadev);  in vga_arb_write()
1349 		if (vgadev == NULL) {  in vga_arb_write()
1480 	struct vga_device *vgadev;  in vga_arbiter_notify_clients()  local
1489 	list_for_each_entry(vgadev, &vga_list, list) {  in vga_arbiter_notify_clients()
1494 		if (vgadev->set_decode) {  in vga_arbiter_notify_clients()
1495 			new_decodes = vgadev->set_decode(vgadev->pdev,  in vga_arbiter_notify_clients()
1497 			vga_update_device_decodes(vgadev, new_decodes);  in vga_arbiter_notify_clients()