ap_bus.c (dc14036fb3240a1bc2677cf8de33fbcb3af77826) ap_bus.c (3f85d1df26a9d9b0d1a5237c580e085c41d6bf50)
1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * Copyright IBM Corp. 2006, 2021
4 * Author(s): Cornelia Huck <cornelia.huck@de.ibm.com>
5 * Martin Schwidefsky <schwidefsky@de.ibm.com>
6 * Ralph Wuerthner <rwuerthn@de.ibm.com>
7 * Felix Beck <felix.beck@de.ibm.com>
8 * Holger Dengler <hd@linux.vnet.ibm.com>

--- 821 unchanged lines hidden (view full) ---

830 return 0;
831}
832
833static void ap_bus_revise_bindings(void)
834{
835 bus_for_each_dev(&ap_bus_type, NULL, NULL, __ap_revise_reserved);
836}
837
1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * Copyright IBM Corp. 2006, 2021
4 * Author(s): Cornelia Huck <cornelia.huck@de.ibm.com>
5 * Martin Schwidefsky <schwidefsky@de.ibm.com>
6 * Ralph Wuerthner <rwuerthn@de.ibm.com>
7 * Felix Beck <felix.beck@de.ibm.com>
8 * Holger Dengler <hd@linux.vnet.ibm.com>

--- 821 unchanged lines hidden (view full) ---

830 return 0;
831}
832
833static void ap_bus_revise_bindings(void)
834{
835 bus_for_each_dev(&ap_bus_type, NULL, NULL, __ap_revise_reserved);
836}
837
838/**
839 * ap_owned_by_def_drv: indicates whether an AP adapter is reserved for the
840 * default host driver or not.
841 * @card: the APID of the adapter card to check
842 * @queue: the APQI of the queue to check
843 *
844 * Note: the ap_perms_mutex must be locked by the caller of this function.
845 *
846 * Return: an int specifying whether the AP adapter is reserved for the host (1)
847 * or not (0).
848 */
838int ap_owned_by_def_drv(int card, int queue)
839{
840 int rc = 0;
841
842 if (card < 0 || card >= AP_DEVICES || queue < 0 || queue >= AP_DOMAINS)
843 return -EINVAL;
844
849int ap_owned_by_def_drv(int card, int queue)
850{
851 int rc = 0;
852
853 if (card < 0 || card >= AP_DEVICES || queue < 0 || queue >= AP_DOMAINS)
854 return -EINVAL;
855
845 mutex_lock(&ap_perms_mutex);
846
847 if (test_bit_inv(card, ap_perms.apm) &&
848 test_bit_inv(queue, ap_perms.aqm))
849 rc = 1;
850
856 if (test_bit_inv(card, ap_perms.apm) &&
857 test_bit_inv(queue, ap_perms.aqm))
858 rc = 1;
859
851 mutex_unlock(&ap_perms_mutex);
852
853 return rc;
854}
855EXPORT_SYMBOL(ap_owned_by_def_drv);
856
860 return rc;
861}
862EXPORT_SYMBOL(ap_owned_by_def_drv);
863
864/**
865 * ap_apqn_in_matrix_owned_by_def_drv: indicates whether every APQN contained in
866 * a set is reserved for the host drivers
867 * or not.
868 * @apm: a bitmap specifying a set of APIDs comprising the APQNs to check
869 * @aqm: a bitmap specifying a set of APQIs comprising the APQNs to check
870 *
871 * Note: the ap_perms_mutex must be locked by the caller of this function.
872 *
873 * Return: an int specifying whether each APQN is reserved for the host (1) or
874 * not (0)
875 */
857int ap_apqn_in_matrix_owned_by_def_drv(unsigned long *apm,
858 unsigned long *aqm)
859{
860 int card, queue, rc = 0;
861
876int ap_apqn_in_matrix_owned_by_def_drv(unsigned long *apm,
877 unsigned long *aqm)
878{
879 int card, queue, rc = 0;
880
862 mutex_lock(&ap_perms_mutex);
863
864 for (card = 0; !rc && card < AP_DEVICES; card++)
865 if (test_bit_inv(card, apm) &&
866 test_bit_inv(card, ap_perms.apm))
867 for (queue = 0; !rc && queue < AP_DOMAINS; queue++)
868 if (test_bit_inv(queue, aqm) &&
869 test_bit_inv(queue, ap_perms.aqm))
870 rc = 1;
871
881 for (card = 0; !rc && card < AP_DEVICES; card++)
882 if (test_bit_inv(card, apm) &&
883 test_bit_inv(card, ap_perms.apm))
884 for (queue = 0; !rc && queue < AP_DOMAINS; queue++)
885 if (test_bit_inv(queue, aqm) &&
886 test_bit_inv(queue, ap_perms.aqm))
887 rc = 1;
888
872 mutex_unlock(&ap_perms_mutex);
873
874 return rc;
875}
876EXPORT_SYMBOL(ap_apqn_in_matrix_owned_by_def_drv);
877
878static int ap_device_probe(struct device *dev)
879{
880 struct ap_device *ap_dev = to_ap_dev(dev);
881 struct ap_driver *ap_drv = to_ap_drv(dev->driver);

--- 548 unchanged lines hidden (view full) ---

1430 * going away when we invoke the callback function.
1431 */
1432 if (!try_module_get(drv->owner))
1433 return 0;
1434
1435 if (ap_drv->in_use) {
1436 rc = ap_drv->in_use(ap_perms.apm, newaqm);
1437 if (rc)
889 return rc;
890}
891EXPORT_SYMBOL(ap_apqn_in_matrix_owned_by_def_drv);
892
893static int ap_device_probe(struct device *dev)
894{
895 struct ap_device *ap_dev = to_ap_dev(dev);
896 struct ap_driver *ap_drv = to_ap_drv(dev->driver);

--- 548 unchanged lines hidden (view full) ---

1445 * going away when we invoke the callback function.
1446 */
1447 if (!try_module_get(drv->owner))
1448 return 0;
1449
1450 if (ap_drv->in_use) {
1451 rc = ap_drv->in_use(ap_perms.apm, newaqm);
1452 if (rc)
1438 rc = -EBUSY;
1453 return -EBUSY;
1439 }
1440
1441 /* release the driver's module */
1442 module_put(drv->owner);
1443
1444 return rc;
1445}
1446

--- 804 unchanged lines hidden --- 		1454 }
1455
1456 /* release the driver's module */
1457 module_put(drv->owner);
1458
1459 return rc;
1460}
1461

--- 804 unchanged lines hidden ---