Lines Matching refs:pdev
58 struct pcifront_device *pdev; member
64 return sd->pdev; in pcifront_get_pdev()
69 struct pcifront_device *pdev) in pcifront_init_sd() argument
74 sd->pdev = pdev; in pcifront_init_sd()
102 static inline void schedule_pcifront_aer_op(struct pcifront_device *pdev) in schedule_pcifront_aer_op() argument
104 if (test_bit(_XEN_PCIB_active, (unsigned long *)&pdev->sh_info->flags) in schedule_pcifront_aer_op()
105 && !test_and_set_bit(_PDEVB_op_active, &pdev->flags)) { in schedule_pcifront_aer_op()
106 dev_dbg(&pdev->xdev->dev, "schedule aer frontend job\n"); in schedule_pcifront_aer_op()
107 schedule_work(&pdev->op_work); in schedule_pcifront_aer_op()
111 static int do_pci_op(struct pcifront_device *pdev, struct xen_pci_op *op) in do_pci_op() argument
114 struct xen_pci_op *active_op = &pdev->sh_info->op; in do_pci_op()
116 evtchn_port_t port = pdev->evtchn; in do_pci_op()
117 unsigned int irq = pdev->irq; in do_pci_op()
120 spin_lock_irqsave(&pdev->sh_info_lock, irq_flags); in do_pci_op()
126 set_bit(_XEN_PCIF_active, (unsigned long *)&pdev->sh_info->flags); in do_pci_op()
140 (unsigned long *)&pdev->sh_info->flags)) { in do_pci_op()
145 dev_err(&pdev->xdev->dev, in do_pci_op()
148 (unsigned long *)&pdev->sh_info->flags); in do_pci_op()
160 (unsigned long *)&pdev->sh_info->flags)) { in do_pci_op()
161 dev_err(&pdev->xdev->dev, in do_pci_op()
163 schedule_pcifront_aer_op(pdev); in do_pci_op()
170 spin_unlock_irqrestore(&pdev->sh_info_lock, irq_flags); in do_pci_op()
188 struct pcifront_device *pdev = pcifront_get_pdev(sd); in pcifront_bus_read() local
190 dev_dbg(&pdev->xdev->dev, in pcifront_bus_read()
195 err = do_pci_op(pdev, &op); in pcifront_bus_read()
198 dev_dbg(&pdev->xdev->dev, "read got back value %x\n", in pcifront_bus_read()
225 struct pcifront_device *pdev = pcifront_get_pdev(sd); in pcifront_bus_write() local
227 dev_dbg(&pdev->xdev->dev, in pcifront_bus_write()
232 return errno_to_pcibios_err(do_pci_op(pdev, &op)); in pcifront_bus_write()
254 struct pcifront_device *pdev = pcifront_get_pdev(sd); in pci_frontend_enable_msix() local
271 err = do_pci_op(pdev, &op); in pci_frontend_enable_msix()
306 struct pcifront_device *pdev = pcifront_get_pdev(sd); in pci_frontend_disable_msix() local
308 err = do_pci_op(pdev, &op); in pci_frontend_disable_msix()
325 struct pcifront_device *pdev = pcifront_get_pdev(sd); in pci_frontend_enable_msi() local
327 err = do_pci_op(pdev, &op); in pci_frontend_enable_msi()
354 struct pcifront_device *pdev = pcifront_get_pdev(sd); in pci_frontend_disable_msi() local
356 err = do_pci_op(pdev, &op); in pci_frontend_disable_msi()
388 struct pcifront_device *pdev = data; in pcifront_claim_resource() local
394 dev_info(&pdev->xdev->dev, "claiming resource %s/%d\n", in pcifront_claim_resource()
397 dev_err(&pdev->xdev->dev, "Could not claim resource %s/%d! " in pcifront_claim_resource()
407 static int pcifront_scan_bus(struct pcifront_device *pdev, in pcifront_scan_bus() argument
429 dev_info(&pdev->xdev->dev, "New device on " in pcifront_scan_bus()
437 static int pcifront_scan_root(struct pcifront_device *pdev, in pcifront_scan_root() argument
453 dev_err(&pdev->xdev->dev, in pcifront_scan_root()
455 dev_err(&pdev->xdev->dev, in pcifront_scan_root()
462 dev_info(&pdev->xdev->dev, "Creating PCI Frontend Bus %04x:%02x\n", in pcifront_scan_root()
474 pcifront_init_sd(sd, domain, bus, pdev); in pcifront_scan_root()
478 b = pci_scan_root_bus(&pdev->xdev->dev, bus, in pcifront_scan_root()
481 dev_err(&pdev->xdev->dev, in pcifront_scan_root()
491 list_add(&bus_entry->list, &pdev->root_buses); in pcifront_scan_root()
497 err = pcifront_scan_bus(pdev, domain, bus, b); in pcifront_scan_root()
500 pci_walk_bus(b, pcifront_claim_resource, pdev); in pcifront_scan_root()
515 static int pcifront_rescan_root(struct pcifront_device *pdev, in pcifront_rescan_root() argument
524 return pcifront_scan_root(pdev, domain, bus); in pcifront_rescan_root()
526 dev_info(&pdev->xdev->dev, "Rescanning PCI Frontend Bus %04x:%02x\n", in pcifront_rescan_root()
529 err = pcifront_scan_bus(pdev, domain, bus, b); in pcifront_rescan_root()
532 pci_walk_bus(b, pcifront_claim_resource, pdev); in pcifront_rescan_root()
552 static void pcifront_free_roots(struct pcifront_device *pdev) in pcifront_free_roots() argument
556 dev_dbg(&pdev->xdev->dev, "cleaning up root buses\n"); in pcifront_free_roots()
559 list_for_each_entry_safe(bus_entry, t, &pdev->root_buses, list) { in pcifront_free_roots()
575 struct pcifront_device *pdev, in pcifront_common_process() argument
579 int bus = pdev->sh_info->aer_op.bus; in pcifront_common_process()
580 int devfn = pdev->sh_info->aer_op.devfn; in pcifront_common_process()
581 int domain = pdev->sh_info->aer_op.domain; in pcifront_common_process()
584 dev_dbg(&pdev->xdev->dev, in pcifront_common_process()
590 dev_err(&pdev->xdev->dev, "device or AER driver is NULL\n"); in pcifront_common_process()
609 dev_err(&pdev->xdev->dev, in pcifront_common_process()
620 struct pcifront_device *pdev = in pcifront_do_aer() local
622 int cmd = pdev->sh_info->aer_op.cmd; in pcifront_do_aer()
624 (pci_channel_state_t)pdev->sh_info->aer_op.err; in pcifront_do_aer()
630 dev_dbg(&pdev->xdev->dev, in pcifront_do_aer()
632 pdev->sh_info->aer_op.bus, pdev->sh_info->aer_op.devfn); in pcifront_do_aer()
634 pdev->sh_info->aer_op.err = pcifront_common_process(cmd, pdev, state); in pcifront_do_aer()
638 clear_bit(_XEN_PCIB_active, (unsigned long *)&pdev->sh_info->flags); in pcifront_do_aer()
639 notify_remote_via_evtchn(pdev->evtchn); in pcifront_do_aer()
643 clear_bit(_PDEVB_op_active, &pdev->flags); in pcifront_do_aer()
646 schedule_pcifront_aer_op(pdev); in pcifront_do_aer()
652 struct pcifront_device *pdev = dev; in pcifront_handler_aer() local
654 schedule_pcifront_aer_op(pdev); in pcifront_handler_aer()
657 static int pcifront_connect_and_init_dma(struct pcifront_device *pdev) in pcifront_connect_and_init_dma() argument
664 dev_info(&pdev->xdev->dev, "Installing PCI frontend\n"); in pcifront_connect_and_init_dma()
665 pcifront_dev = pdev; in pcifront_connect_and_init_dma()
674 static void pcifront_disconnect(struct pcifront_device *pdev) in pcifront_disconnect() argument
678 if (pdev == pcifront_dev) { in pcifront_disconnect()
679 dev_info(&pdev->xdev->dev, in pcifront_disconnect()
688 struct pcifront_device *pdev; in alloc_pdev() local
690 pdev = kzalloc(sizeof(struct pcifront_device), GFP_KERNEL); in alloc_pdev()
691 if (pdev == NULL) in alloc_pdev()
694 if (xenbus_setup_ring(xdev, GFP_KERNEL, (void **)&pdev->sh_info, 1, in alloc_pdev()
695 &pdev->gnt_ref)) { in alloc_pdev()
696 kfree(pdev); in alloc_pdev()
697 pdev = NULL; in alloc_pdev()
700 pdev->sh_info->flags = 0; in alloc_pdev()
703 set_bit(_XEN_PCIB_AERHANDLER, (void *)&pdev->sh_info->flags); in alloc_pdev()
705 dev_set_drvdata(&xdev->dev, pdev); in alloc_pdev()
706 pdev->xdev = xdev; in alloc_pdev()
708 INIT_LIST_HEAD(&pdev->root_buses); in alloc_pdev()
710 spin_lock_init(&pdev->sh_info_lock); in alloc_pdev()
712 pdev->evtchn = INVALID_EVTCHN; in alloc_pdev()
713 pdev->irq = -1; in alloc_pdev()
715 INIT_WORK(&pdev->op_work, pcifront_do_aer); in alloc_pdev()
718 pdev, pdev->sh_info); in alloc_pdev()
720 return pdev; in alloc_pdev()
723 static void free_pdev(struct pcifront_device *pdev) in free_pdev() argument
725 dev_dbg(&pdev->xdev->dev, "freeing pdev @ 0x%p\n", pdev); in free_pdev()
727 pcifront_free_roots(pdev); in free_pdev()
729 cancel_work_sync(&pdev->op_work); in free_pdev()
731 if (pdev->irq >= 0) in free_pdev()
732 unbind_from_irqhandler(pdev->irq, pdev); in free_pdev()
734 if (pdev->evtchn != INVALID_EVTCHN) in free_pdev()
735 xenbus_free_evtchn(pdev->xdev, pdev->evtchn); in free_pdev()
737 xenbus_teardown_ring((void **)&pdev->sh_info, 1, &pdev->gnt_ref); in free_pdev()
739 dev_set_drvdata(&pdev->xdev->dev, NULL); in free_pdev()
741 kfree(pdev); in free_pdev()
744 static int pcifront_publish_info(struct pcifront_device *pdev) in pcifront_publish_info() argument
749 err = xenbus_alloc_evtchn(pdev->xdev, &pdev->evtchn); in pcifront_publish_info()
753 err = bind_evtchn_to_irqhandler(pdev->evtchn, pcifront_handler_aer, in pcifront_publish_info()
754 0, "pcifront", pdev); in pcifront_publish_info()
759 pdev->irq = err; in pcifront_publish_info()
764 xenbus_dev_fatal(pdev->xdev, err, in pcifront_publish_info()
770 err = xenbus_printf(trans, pdev->xdev->nodename, in pcifront_publish_info()
771 "pci-op-ref", "%u", pdev->gnt_ref); in pcifront_publish_info()
773 err = xenbus_printf(trans, pdev->xdev->nodename, in pcifront_publish_info()
774 "event-channel", "%u", pdev->evtchn); in pcifront_publish_info()
776 err = xenbus_printf(trans, pdev->xdev->nodename, in pcifront_publish_info()
781 xenbus_dev_fatal(pdev->xdev, err, in pcifront_publish_info()
789 xenbus_dev_fatal(pdev->xdev, err, in pcifront_publish_info()
796 xenbus_switch_state(pdev->xdev, XenbusStateInitialised); in pcifront_publish_info()
798 dev_dbg(&pdev->xdev->dev, "publishing successful!\n"); in pcifront_publish_info()
804 static void pcifront_connect(struct pcifront_device *pdev) in pcifront_connect() argument
811 err = xenbus_scanf(XBT_NIL, pdev->xdev->otherend, in pcifront_connect()
814 xenbus_dev_error(pdev->xdev, err, in pcifront_connect()
816 err = pcifront_rescan_root(pdev, 0, 0); in pcifront_connect()
818 xenbus_dev_fatal(pdev->xdev, err, in pcifront_connect()
824 xenbus_dev_fatal(pdev->xdev, err >= 0 ? -EINVAL : err, in pcifront_connect()
834 err = xenbus_scanf(XBT_NIL, pdev->xdev->otherend, str, in pcifront_connect()
837 xenbus_dev_fatal(pdev->xdev, err >= 0 ? -EINVAL : err, in pcifront_connect()
842 err = pcifront_rescan_root(pdev, domain, bus); in pcifront_connect()
844 xenbus_dev_fatal(pdev->xdev, err, in pcifront_connect()
851 xenbus_switch_state(pdev->xdev, XenbusStateConnected); in pcifront_connect()
854 static void pcifront_try_connect(struct pcifront_device *pdev) in pcifront_try_connect() argument
859 if (xenbus_read_driver_state(pdev->xdev->nodename) != in pcifront_try_connect()
863 err = pcifront_connect_and_init_dma(pdev); in pcifront_try_connect()
865 xenbus_dev_fatal(pdev->xdev, err, in pcifront_try_connect()
870 pcifront_connect(pdev); in pcifront_try_connect()
873 static int pcifront_try_disconnect(struct pcifront_device *pdev) in pcifront_try_disconnect() argument
879 prev_state = xenbus_read_driver_state(pdev->xdev->nodename); in pcifront_try_disconnect()
885 pcifront_free_roots(pdev); in pcifront_try_disconnect()
886 pcifront_disconnect(pdev); in pcifront_try_disconnect()
889 err = xenbus_switch_state(pdev->xdev, XenbusStateClosed); in pcifront_try_disconnect()
896 static void pcifront_attach_devices(struct pcifront_device *pdev) in pcifront_attach_devices() argument
898 if (xenbus_read_driver_state(pdev->xdev->nodename) == in pcifront_attach_devices()
900 pcifront_connect(pdev); in pcifront_attach_devices()
903 static int pcifront_detach_devices(struct pcifront_device *pdev) in pcifront_detach_devices() argument
912 state = xenbus_read_driver_state(pdev->xdev->nodename); in pcifront_detach_devices()
914 dev_dbg(&pdev->xdev->dev, "Handle skipped connect.\n"); in pcifront_detach_devices()
916 err = pcifront_connect_and_init_dma(pdev); in pcifront_detach_devices()
918 xenbus_dev_fatal(pdev->xdev, err, in pcifront_detach_devices()
928 err = xenbus_scanf(XBT_NIL, pdev->xdev->otherend, "num_devs", "%d", in pcifront_detach_devices()
933 xenbus_dev_fatal(pdev->xdev, err, in pcifront_detach_devices()
947 state = xenbus_read_unsigned(pdev->xdev->otherend, str, in pcifront_detach_devices()
959 err = xenbus_scanf(XBT_NIL, pdev->xdev->otherend, str, in pcifront_detach_devices()
964 xenbus_dev_fatal(pdev->xdev, err, in pcifront_detach_devices()
972 dev_dbg(&pdev->xdev->dev, in pcifront_detach_devices()
982 dev_dbg(&pdev->xdev->dev, in pcifront_detach_devices()
988 err = xenbus_switch_state(pdev->xdev, XenbusStateReconfiguring); in pcifront_detach_devices()
997 struct pcifront_device *pdev = dev_get_drvdata(&xdev->dev); in pcifront_backend_changed() local
1007 pcifront_try_connect(pdev); in pcifront_backend_changed()
1016 pcifront_try_disconnect(pdev); in pcifront_backend_changed()
1020 pcifront_detach_devices(pdev); in pcifront_backend_changed()
1024 pcifront_attach_devices(pdev); in pcifront_backend_changed()
1033 struct pcifront_device *pdev = alloc_pdev(xdev); in pcifront_xenbus_probe() local
1035 if (pdev == NULL) { in pcifront_xenbus_probe()
1042 err = pcifront_publish_info(pdev); in pcifront_xenbus_probe()
1044 free_pdev(pdev); in pcifront_xenbus_probe()
1052 struct pcifront_device *pdev = dev_get_drvdata(&xdev->dev); in pcifront_xenbus_remove() local
1054 if (pdev) in pcifront_xenbus_remove()
1055 free_pdev(pdev); in pcifront_xenbus_remove()