1 // SPDX-License-Identifier: GPL-2.0
3  * PCI Backend - Handles the virtual fields found on the capability lists
28 	 .u.w.read  = xen_pcibk_read_config_word,
36 	list_add_tail(&cap->cap_list, &capabilities);  in register_capability()
46 		cap_offset = pci_find_capability(dev, cap->capability);  in xen_pcibk_config_capability_add_fields()
48 			dev_dbg(&dev->dev, "Found capability 0x%x at 0x%x\n",  in xen_pcibk_config_capability_add_fields()
49 				cap->capability, cap_offset);  in xen_pcibk_config_capability_add_fields()
55 				goto out;  in xen_pcibk_config_capability_add_fields()
57 							       cap->fields,  in xen_pcibk_config_capability_add_fields()
60 				goto out;  in xen_pcibk_config_capability_add_fields()
64 out:  in xen_pcibk_config_capability_add_fields()
82 	 .u.w.read  = xen_pcibk_read_config_word,
88 	 .u.dw.read  = xen_pcibk_read_config_dword,
102 		goto out;  in pm_caps_read()
106 out:  in pm_caps_read()
111  * Can't allow driver domain to enable PMEs - they're shared */
123 		goto out;  in pm_ctrl_write()
132 			goto out;  in pm_ctrl_write()
136 	dev_dbg(&dev->dev, "set power state to %x\n", new_state);  in pm_ctrl_write()
140 		goto out;  in pm_ctrl_write()
143  out:  in pm_ctrl_write()
155 		goto out;  in pm_ctrl_init()
162 out:  in pm_ctrl_init()
170 		.u.w.read   = pm_caps_read,
176 		.u.w.read   = xen_pcibk_read_config_word,
182 		.u.b.read   = xen_pcibk_read_config_byte,
187 		.u.b.read   = xen_pcibk_read_config_byte,
193 	u16          enable_bit;   /* bit for enabling MSI/MSI-X */
224 	if (xen_pcibk_permissive || dev_data->permissive)  in msi_msix_flags_write()
234 	if (!dev_data->allow_interrupt_control ||  in msi_msix_flags_write()
235 	    (new_value ^ old_value) & ~field_config->allowed_bits)  in msi_msix_flags_write()
238 	if (new_value & field_config->enable_bit) {  in msi_msix_flags_write()
243 		    int_type == field_config->int_type)  in msi_msix_flags_write()
257 		.u.w.read  = xen_pcibk_read_config_word,
268 		.u.w.read  = xen_pcibk_read_config_word,