1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
50 #include <dev/pci/pcireg.h>
51 #include <dev/pci/pcivar.h>
52 #include <dev/pci/pci_private.h>
85 	/* PCI interface */
100 DEFINE_CLASS_1(pci, ofw_pcibus_driver, ofw_pcibus_methods,
104 MODULE_DEPEND(ofw_pcibus, pci, 1, 1, 1);
107 TUNABLE_INT("hw.pci.ofw_devices_only", &ofw_devices_only);
113 	if (ofw_bus_get_node(dev) == -1)  in ofw_pcibus_probe()
115 	device_set_desc(dev, "OFW PCI bus");  in ofw_pcibus_probe()
140 	 * the device tree to enumerate only some PCI devices. Apple's  in ofw_pcibus_attach()
141 	 * OF device tree on some Grackle-based hardware can also miss  in ofw_pcibus_attach()
142 	 * functions on multi-function cards.  in ofw_pcibus_attach()
158 	return (&dinfo->opd_dinfo);  in ofw_pcibus_alloc_devinfo()
176 		    sizeof(pcir)) == -1)  in ofw_pcibus_enum_devtree()
187 		 * it such that the PCI code will reroute the interrupt if  in ofw_pcibus_enum_devtree()
198 		 * Now set up the PCI and OFW bus layer devinfo and add it  in ofw_pcibus_enum_devtree()
199 		 * to the PCI bus.  in ofw_pcibus_enum_devtree()
206 		if (ofw_bus_gen_setup_devinfo(&dinfo->opd_obdinfo, child) !=  in ofw_pcibus_enum_devtree()
211 		dinfo->opd_dma_tag = NULL;  in ofw_pcibus_enum_devtree()
220 		if (dinfo->opd_dinfo.cfg.intpin == 0)  in ofw_pcibus_enum_devtree()
222 				&dinfo->opd_dinfo.resources, NULL);  in ofw_pcibus_enum_devtree()
230  * to handle non-enumerated PCI children as exist in FDT and on the second
265 			dinfo->opd_dma_tag = NULL;  in ofw_pcibus_enum_bus()
266 			dinfo->opd_obdinfo.obd_node = -1;  in ofw_pcibus_enum_bus()
268 			dinfo->opd_obdinfo.obd_name = NULL;  in ofw_pcibus_enum_bus()
269 			dinfo->opd_obdinfo.obd_compat = NULL;  in ofw_pcibus_enum_bus()
270 			dinfo->opd_obdinfo.obd_type = NULL;  in ofw_pcibus_enum_bus()
271 			dinfo->opd_obdinfo.obd_model = NULL;  in ofw_pcibus_enum_bus()
274 			 * For non OFW-devices, don't believe 0   in ofw_pcibus_enum_bus()
277 			if (dinfo->opd_dinfo.cfg.intline == 0) {  in ofw_pcibus_enum_bus()
278 				dinfo->opd_dinfo.cfg.intline = PCI_INVALID_IRQ;  in ofw_pcibus_enum_bus()
294 	ofw_bus_gen_destroy_devinfo(&dinfo->opd_obdinfo);  in ofw_pcibus_child_deleted()
303 	if (ofw_bus_get_node(child) != -1)  {  in ofw_pcibus_child_pnpinfo_method()
320 	if (node == -1) {  in ofw_pcibus_assign_interrupt()
321 		/* Non-firmware enumerated child, use standard routing */  in ofw_pcibus_assign_interrupt()
333 	iparent = -1;  in ofw_pcibus_assign_interrupt()
334 	if (OF_getencprop(node, "interrupt-parent", &iparent,  in ofw_pcibus_assign_interrupt()
336 		iparent = -1;  in ofw_pcibus_assign_interrupt()
338 	if (iparent != -1)  in ofw_pcibus_assign_interrupt()
339 		OF_getencprop(OF_node_from_xref(iparent), "#interrupt-cells",  in ofw_pcibus_assign_interrupt()
349 		return ((iparent == -1) ? intr[0] : ofw_bus_map_intr(dev,  in ofw_pcibus_assign_interrupt()
354 		if (iparent != -1)  in ofw_pcibus_assign_interrupt()
363 	 * For on-board devices, it frequently is not, and is completely out  in ofw_pcibus_assign_interrupt()
364 	 * of the valid intpin range.  For PCI slots, it hopefully is,  in ofw_pcibus_assign_interrupt()
365 	 * otherwise we will have trouble interfacing with non-OFW buses  in ofw_pcibus_assign_interrupt()
380 	return (&dinfo->opd_obdinfo);  in ofw_pcibus_get_devinfo()