Lines Matching refs:pdev
57 struct pcifront_device *pdev; member
63 return sd->pdev; in pcifront_get_pdev()
68 struct pcifront_device *pdev) in pcifront_init_sd() argument
73 sd->pdev = pdev; in pcifront_init_sd()
104 static inline void schedule_pcifront_aer_op(struct pcifront_device *pdev) in schedule_pcifront_aer_op() argument
106 if (test_bit(_XEN_PCIB_active, (unsigned long *)&pdev->sh_info->flags) in schedule_pcifront_aer_op()
107 && !test_and_set_bit(_PDEVB_op_active, &pdev->flags)) { in schedule_pcifront_aer_op()
108 dev_dbg(&pdev->xdev->dev, "schedule aer frontend job\n"); in schedule_pcifront_aer_op()
109 schedule_work(&pdev->op_work); in schedule_pcifront_aer_op()
113 static int do_pci_op(struct pcifront_device *pdev, struct xen_pci_op *op) in do_pci_op() argument
116 struct xen_pci_op *active_op = &pdev->sh_info->op; in do_pci_op()
118 evtchn_port_t port = pdev->evtchn; in do_pci_op()
119 unsigned irq = pdev->irq; in do_pci_op()
122 spin_lock_irqsave(&pdev->sh_info_lock, irq_flags); in do_pci_op()
128 set_bit(_XEN_PCIF_active, (unsigned long *)&pdev->sh_info->flags); in do_pci_op()
142 (unsigned long *)&pdev->sh_info->flags)) { in do_pci_op()
147 dev_err(&pdev->xdev->dev, in do_pci_op()
150 (unsigned long *)&pdev->sh_info->flags); in do_pci_op()
162 (unsigned long *)&pdev->sh_info->flags)) { in do_pci_op()
163 dev_err(&pdev->xdev->dev, in do_pci_op()
165 schedule_pcifront_aer_op(pdev); in do_pci_op()
172 spin_unlock_irqrestore(&pdev->sh_info_lock, irq_flags); in do_pci_op()
190 struct pcifront_device *pdev = pcifront_get_pdev(sd); in pcifront_bus_read() local
193 dev_info(&pdev->xdev->dev, in pcifront_bus_read()
198 err = do_pci_op(pdev, &op); in pcifront_bus_read()
202 dev_info(&pdev->xdev->dev, "read got back value %x\n", in pcifront_bus_read()
229 struct pcifront_device *pdev = pcifront_get_pdev(sd); in pcifront_bus_write() local
232 dev_info(&pdev->xdev->dev, in pcifront_bus_write()
238 return errno_to_pcibios_err(do_pci_op(pdev, &op)); in pcifront_bus_write()
260 struct pcifront_device *pdev = pcifront_get_pdev(sd); in pci_frontend_enable_msix() local
277 err = do_pci_op(pdev, &op); in pci_frontend_enable_msix()
313 struct pcifront_device *pdev = pcifront_get_pdev(sd); in pci_frontend_disable_msix() local
315 err = do_pci_op(pdev, &op); in pci_frontend_disable_msix()
332 struct pcifront_device *pdev = pcifront_get_pdev(sd); in pci_frontend_enable_msi() local
334 err = do_pci_op(pdev, &op); in pci_frontend_enable_msi()
361 struct pcifront_device *pdev = pcifront_get_pdev(sd); in pci_frontend_disable_msi() local
363 err = do_pci_op(pdev, &op); in pci_frontend_disable_msi()
395 struct pcifront_device *pdev = data; in pcifront_claim_resource() local
403 dev_info(&pdev->xdev->dev, "claiming resource %s/%d\n", in pcifront_claim_resource()
406 dev_err(&pdev->xdev->dev, "Could not claim resource %s/%d! " in pcifront_claim_resource()
416 static int pcifront_scan_bus(struct pcifront_device *pdev, in pcifront_scan_bus() argument
437 dev_info(&pdev->xdev->dev, "New device on " in pcifront_scan_bus()
445 static int pcifront_scan_root(struct pcifront_device *pdev, in pcifront_scan_root() argument
461 dev_err(&pdev->xdev->dev, in pcifront_scan_root()
463 dev_err(&pdev->xdev->dev, in pcifront_scan_root()
470 dev_info(&pdev->xdev->dev, "Creating PCI Frontend Bus %04x:%02x\n", in pcifront_scan_root()
482 pcifront_init_sd(sd, domain, bus, pdev); in pcifront_scan_root()
486 b = pci_scan_root_bus(&pdev->xdev->dev, bus, in pcifront_scan_root()
489 dev_err(&pdev->xdev->dev, in pcifront_scan_root()
499 list_add(&bus_entry->list, &pdev->root_buses); in pcifront_scan_root()
503 err = pcifront_scan_bus(pdev, domain, bus, b); in pcifront_scan_root()
506 pci_walk_bus(b, pcifront_claim_resource, pdev); in pcifront_scan_root()
521 static int pcifront_rescan_root(struct pcifront_device *pdev, in pcifront_rescan_root() argument
529 dev_err(&pdev->xdev->dev, in pcifront_rescan_root()
531 dev_err(&pdev->xdev->dev, in pcifront_rescan_root()
537 dev_info(&pdev->xdev->dev, "Rescanning PCI Frontend Bus %04x:%02x\n", in pcifront_rescan_root()
543 return pcifront_scan_root(pdev, domain, bus); in pcifront_rescan_root()
545 err = pcifront_scan_bus(pdev, domain, bus, b); in pcifront_rescan_root()
548 pci_walk_bus(b, pcifront_claim_resource, pdev); in pcifront_rescan_root()
568 static void pcifront_free_roots(struct pcifront_device *pdev) in pcifront_free_roots() argument
572 dev_dbg(&pdev->xdev->dev, "cleaning up root buses\n"); in pcifront_free_roots()
575 list_for_each_entry_safe(bus_entry, t, &pdev->root_buses, list) { in pcifront_free_roots()
591 struct pcifront_device *pdev, in pcifront_common_process() argument
596 int bus = pdev->sh_info->aer_op.bus; in pcifront_common_process()
597 int devfn = pdev->sh_info->aer_op.devfn; in pcifront_common_process()
601 dev_dbg(&pdev->xdev->dev, in pcifront_common_process()
608 dev_err(&pdev->xdev->dev, "device or AER driver is NULL\n"); in pcifront_common_process()
637 dev_err(&pdev->xdev->dev, in pcifront_common_process()
654 struct pcifront_device *pdev = in pcifront_do_aer() local
656 int cmd = pdev->sh_info->aer_op.cmd; in pcifront_do_aer()
658 (pci_channel_state_t)pdev->sh_info->aer_op.err; in pcifront_do_aer()
662 dev_dbg(&pdev->xdev->dev, in pcifront_do_aer()
664 pdev->sh_info->aer_op.bus, pdev->sh_info->aer_op.devfn); in pcifront_do_aer()
666 pdev->sh_info->aer_op.err = pcifront_common_process(cmd, pdev, state); in pcifront_do_aer()
670 clear_bit(_XEN_PCIB_active, (unsigned long *)&pdev->sh_info->flags); in pcifront_do_aer()
671 notify_remote_via_evtchn(pdev->evtchn); in pcifront_do_aer()
675 clear_bit(_PDEVB_op_active, &pdev->flags); in pcifront_do_aer()
678 schedule_pcifront_aer_op(pdev); in pcifront_do_aer()
684 struct pcifront_device *pdev = dev; in pcifront_handler_aer() local
685 schedule_pcifront_aer_op(pdev); in pcifront_handler_aer()
688 static int pcifront_connect_and_init_dma(struct pcifront_device *pdev) in pcifront_connect_and_init_dma() argument
695 dev_info(&pdev->xdev->dev, "Installing PCI frontend\n"); in pcifront_connect_and_init_dma()
696 pcifront_dev = pdev; in pcifront_connect_and_init_dma()
705 dev_err(&pdev->xdev->dev, "Could not setup SWIOTLB!\n"); in pcifront_connect_and_init_dma()
710 static void pcifront_disconnect(struct pcifront_device *pdev) in pcifront_disconnect() argument
714 if (pdev == pcifront_dev) { in pcifront_disconnect()
715 dev_info(&pdev->xdev->dev, in pcifront_disconnect()
724 struct pcifront_device *pdev; in alloc_pdev() local
726 pdev = kzalloc(sizeof(struct pcifront_device), GFP_KERNEL); in alloc_pdev()
727 if (pdev == NULL) in alloc_pdev()
730 pdev->sh_info = in alloc_pdev()
732 if (pdev->sh_info == NULL) { in alloc_pdev()
733 kfree(pdev); in alloc_pdev()
734 pdev = NULL; in alloc_pdev()
737 pdev->sh_info->flags = 0; in alloc_pdev()
740 set_bit(_XEN_PCIB_AERHANDLER, (void *)&pdev->sh_info->flags); in alloc_pdev()
742 dev_set_drvdata(&xdev->dev, pdev); in alloc_pdev()
743 pdev->xdev = xdev; in alloc_pdev()
745 INIT_LIST_HEAD(&pdev->root_buses); in alloc_pdev()
747 spin_lock_init(&pdev->sh_info_lock); in alloc_pdev()
749 pdev->evtchn = INVALID_EVTCHN; in alloc_pdev()
750 pdev->gnt_ref = INVALID_GRANT_REF; in alloc_pdev()
751 pdev->irq = -1; in alloc_pdev()
753 INIT_WORK(&pdev->op_work, pcifront_do_aer); in alloc_pdev()
756 pdev, pdev->sh_info); in alloc_pdev()
758 return pdev; in alloc_pdev()
761 static void free_pdev(struct pcifront_device *pdev) in free_pdev() argument
763 dev_dbg(&pdev->xdev->dev, "freeing pdev @ 0x%p\n", pdev); in free_pdev()
765 pcifront_free_roots(pdev); in free_pdev()
767 cancel_work_sync(&pdev->op_work); in free_pdev()
769 if (pdev->irq >= 0) in free_pdev()
770 unbind_from_irqhandler(pdev->irq, pdev); in free_pdev()
772 if (pdev->evtchn != INVALID_EVTCHN) in free_pdev()
773 xenbus_free_evtchn(pdev->xdev, pdev->evtchn); in free_pdev()
775 if (pdev->gnt_ref != INVALID_GRANT_REF) in free_pdev()
776 gnttab_end_foreign_access(pdev->gnt_ref, 0 /* r/w page */, in free_pdev()
777 (unsigned long)pdev->sh_info); in free_pdev()
779 free_page((unsigned long)pdev->sh_info); in free_pdev()
781 dev_set_drvdata(&pdev->xdev->dev, NULL); in free_pdev()
783 kfree(pdev); in free_pdev()
786 static int pcifront_publish_info(struct pcifront_device *pdev) in pcifront_publish_info() argument
792 err = xenbus_grant_ring(pdev->xdev, pdev->sh_info, 1, &gref); in pcifront_publish_info()
796 pdev->gnt_ref = gref; in pcifront_publish_info()
798 err = xenbus_alloc_evtchn(pdev->xdev, &pdev->evtchn); in pcifront_publish_info()
802 err = bind_evtchn_to_irqhandler(pdev->evtchn, pcifront_handler_aer, in pcifront_publish_info()
803 0, "pcifront", pdev); in pcifront_publish_info()
808 pdev->irq = err; in pcifront_publish_info()
813 xenbus_dev_fatal(pdev->xdev, err, in pcifront_publish_info()
819 err = xenbus_printf(trans, pdev->xdev->nodename, in pcifront_publish_info()
820 "pci-op-ref", "%u", pdev->gnt_ref); in pcifront_publish_info()
822 err = xenbus_printf(trans, pdev->xdev->nodename, in pcifront_publish_info()
823 "event-channel", "%u", pdev->evtchn); in pcifront_publish_info()
825 err = xenbus_printf(trans, pdev->xdev->nodename, in pcifront_publish_info()
830 xenbus_dev_fatal(pdev->xdev, err, in pcifront_publish_info()
838 xenbus_dev_fatal(pdev->xdev, err, in pcifront_publish_info()
845 xenbus_switch_state(pdev->xdev, XenbusStateInitialised); in pcifront_publish_info()
847 dev_dbg(&pdev->xdev->dev, "publishing successful!\n"); in pcifront_publish_info()
853 static int pcifront_try_connect(struct pcifront_device *pdev) in pcifront_try_connect() argument
862 if (xenbus_read_driver_state(pdev->xdev->nodename) != in pcifront_try_connect()
866 err = pcifront_connect_and_init_dma(pdev); in pcifront_try_connect()
868 xenbus_dev_fatal(pdev->xdev, err, in pcifront_try_connect()
873 err = xenbus_scanf(XBT_NIL, pdev->xdev->otherend, in pcifront_try_connect()
876 xenbus_dev_error(pdev->xdev, err, in pcifront_try_connect()
878 err = pcifront_scan_root(pdev, 0, 0); in pcifront_try_connect()
880 xenbus_dev_fatal(pdev->xdev, err, in pcifront_try_connect()
888 xenbus_dev_fatal(pdev->xdev, err, in pcifront_try_connect()
900 err = xenbus_scanf(XBT_NIL, pdev->xdev->otherend, str, in pcifront_try_connect()
905 xenbus_dev_fatal(pdev->xdev, err, in pcifront_try_connect()
910 err = pcifront_scan_root(pdev, domain, bus); in pcifront_try_connect()
912 xenbus_dev_fatal(pdev->xdev, err, in pcifront_try_connect()
919 err = xenbus_switch_state(pdev->xdev, XenbusStateConnected); in pcifront_try_connect()
925 static int pcifront_try_disconnect(struct pcifront_device *pdev) in pcifront_try_disconnect() argument
931 prev_state = xenbus_read_driver_state(pdev->xdev->nodename); in pcifront_try_disconnect()
937 pcifront_free_roots(pdev); in pcifront_try_disconnect()
938 pcifront_disconnect(pdev); in pcifront_try_disconnect()
941 err = xenbus_switch_state(pdev->xdev, XenbusStateClosed); in pcifront_try_disconnect()
948 static int pcifront_attach_devices(struct pcifront_device *pdev) in pcifront_attach_devices() argument
955 if (xenbus_read_driver_state(pdev->xdev->nodename) != in pcifront_attach_devices()
959 err = xenbus_scanf(XBT_NIL, pdev->xdev->otherend, in pcifront_attach_devices()
962 xenbus_dev_error(pdev->xdev, err, in pcifront_attach_devices()
964 err = pcifront_rescan_root(pdev, 0, 0); in pcifront_attach_devices()
966 xenbus_dev_fatal(pdev->xdev, err, in pcifront_attach_devices()
974 xenbus_dev_fatal(pdev->xdev, err, in pcifront_attach_devices()
986 err = xenbus_scanf(XBT_NIL, pdev->xdev->otherend, str, in pcifront_attach_devices()
991 xenbus_dev_fatal(pdev->xdev, err, in pcifront_attach_devices()
996 err = pcifront_rescan_root(pdev, domain, bus); in pcifront_attach_devices()
998 xenbus_dev_fatal(pdev->xdev, err, in pcifront_attach_devices()
1005 xenbus_switch_state(pdev->xdev, XenbusStateConnected); in pcifront_attach_devices()
1011 static int pcifront_detach_devices(struct pcifront_device *pdev) in pcifront_detach_devices() argument
1019 if (xenbus_read_driver_state(pdev->xdev->nodename) != in pcifront_detach_devices()
1023 err = xenbus_scanf(XBT_NIL, pdev->xdev->otherend, "num_devs", "%d", in pcifront_detach_devices()
1028 xenbus_dev_fatal(pdev->xdev, err, in pcifront_detach_devices()
1041 err = xenbus_scanf(XBT_NIL, pdev->xdev->otherend, str, "%d", in pcifront_detach_devices()
1055 err = xenbus_scanf(XBT_NIL, pdev->xdev->otherend, str, in pcifront_detach_devices()
1060 xenbus_dev_fatal(pdev->xdev, err, in pcifront_detach_devices()
1068 dev_dbg(&pdev->xdev->dev, in pcifront_detach_devices()
1078 dev_dbg(&pdev->xdev->dev, in pcifront_detach_devices()
1083 err = xenbus_switch_state(pdev->xdev, XenbusStateReconfiguring); in pcifront_detach_devices()
1092 struct pcifront_device *pdev = dev_get_drvdata(&xdev->dev); in pcifront_backend_changed() local
1102 pcifront_try_connect(pdev); in pcifront_backend_changed()
1111 pcifront_try_disconnect(pdev); in pcifront_backend_changed()
1115 pcifront_detach_devices(pdev); in pcifront_backend_changed()
1119 pcifront_attach_devices(pdev); in pcifront_backend_changed()
1128 struct pcifront_device *pdev = alloc_pdev(xdev); in pcifront_xenbus_probe() local
1130 if (pdev == NULL) { in pcifront_xenbus_probe()
1137 err = pcifront_publish_info(pdev); in pcifront_xenbus_probe()
1139 free_pdev(pdev); in pcifront_xenbus_probe()
1147 struct pcifront_device *pdev = dev_get_drvdata(&xdev->dev); in pcifront_xenbus_remove() local
1148 if (pdev) in pcifront_xenbus_remove()
1149 free_pdev(pdev); in pcifront_xenbus_remove()