1 // SPDX-License-Identifier: GPL-2.0
3  * PCI Backend - Handle special overlays for broken devices.
19 match_one_device(const struct pci_device_id *id, const struct pci_dev *dev)  in match_one_device()  argument
21 	if ((id->vendor == PCI_ANY_ID || id->vendor == dev->vendor) &&  in match_one_device()
22 	    (id->device == PCI_ANY_ID || id->device == dev->device) &&  in match_one_device()
23 	    (id->subvendor == PCI_ANY_ID ||  in match_one_device()
24 				id->subvendor == dev->subsystem_vendor) &&  in match_one_device()
25 	    (id->subdevice == PCI_ANY_ID ||  in match_one_device()
26 				id->subdevice == dev->subsystem_device) &&  in match_one_device()
27 	    !((id->class ^ dev->class) & id->class_mask))  in match_one_device()
28 		return id;  in match_one_device()
37 		if (match_one_device(&tmp_quirk->devid, dev) != NULL)  in xen_pcibk_find_quirk()
40 	dev_printk(KERN_DEBUG, &dev->dev,  in xen_pcibk_find_quirk()
48 	list_add_tail(&quirk->quirks_list, &xen_pcibk_quirks);  in register_quirk()
57 	list_for_each_entry(cfg_entry, &dev_data->config_fields, list) {  in xen_pcibk_field_is_dup()
71 	switch (field->size) {  in xen_pcibk_config_quirks_add_field()
73 		field->u.b.read = xen_pcibk_read_config_byte;  in xen_pcibk_config_quirks_add_field()
74 		field->u.b.write = xen_pcibk_write_config_byte;  in xen_pcibk_config_quirks_add_field()
77 		field->u.w.read = xen_pcibk_read_config_word;  in xen_pcibk_config_quirks_add_field()
78 		field->u.w.write = xen_pcibk_write_config_word;  in xen_pcibk_config_quirks_add_field()
81 		field->u.dw.read = xen_pcibk_read_config_dword;  in xen_pcibk_config_quirks_add_field()
82 		field->u.dw.write = xen_pcibk_write_config_dword;  in xen_pcibk_config_quirks_add_field()
85 		err = -EINVAL;  in xen_pcibk_config_quirks_add_field()
102 		ret = -ENOMEM;  in xen_pcibk_config_quirks_init()
106 	quirk->devid.vendor = dev->vendor;  in xen_pcibk_config_quirks_init()
107 	quirk->devid.device = dev->device;  in xen_pcibk_config_quirks_init()
108 	quirk->devid.subvendor = dev->subsystem_vendor;  in xen_pcibk_config_quirks_init()
109 	quirk->devid.subdevice = dev->subsystem_device;  in xen_pcibk_config_quirks_init()
110 	quirk->devid.class = 0;  in xen_pcibk_config_quirks_init()
111 	quirk->devid.class_mask = 0;  in xen_pcibk_config_quirks_init()
112 	quirk->devid.driver_data = 0UL;  in xen_pcibk_config_quirks_init()
114 	quirk->pdev = dev;  in xen_pcibk_config_quirks_init()
133 		ret = -ENXIO;  in xen_pcibk_config_quirk_release()
137 	list_del(&quirk->quirks_list);  in xen_pcibk_config_quirk_release()