1 /*-
2  * SPDX-License-Identifier: BSD-3-Clause
50 #include <machine/resource.h>
54 static struct resource *	isab_pci_alloc_resource(device_t dev,
58     struct resource *r);
82 	struct resource	*ip_res;
142 		printf("PCI-ISA bridge with incorrect subclass 0x%x\n",  in isab_pci_probe()
153 	device_set_desc(dev, "PCI-ISA bridge");  in isab_pci_probe()
154 	return(-10000);  in isab_pci_probe()
167 static struct resource *
171 	struct isab_pci_softc *sc;  in isab_pci_alloc_resource()  local
182 		 * For BARs, we cache the resource so that we only allocate it  in isab_pci_alloc_resource()
188 		sc = device_get_softc(dev);  in isab_pci_alloc_resource()
189 		if (sc->isab_pci_res[bar].ip_res == NULL)  in isab_pci_alloc_resource()
190 			sc->isab_pci_res[bar].ip_res = bus_alloc_resource(dev, type,  in isab_pci_alloc_resource()
192 		if (sc->isab_pci_res[bar].ip_res != NULL)  in isab_pci_alloc_resource()
193 			sc->isab_pci_res[bar].ip_refs++;  in isab_pci_alloc_resource()
194 		return (sc->isab_pci_res[bar].ip_res);  in isab_pci_alloc_resource()
202 isab_pci_release_resource(device_t dev, device_t child, struct resource *r)  in isab_pci_release_resource()
204 	struct isab_pci_softc *sc;  in isab_pci_release_resource()  local
214 		 * For BARs, we release the resource from the PCI bus  in isab_pci_release_resource()
220 		sc = device_get_softc(dev);  in isab_pci_release_resource()
221 		if (sc->isab_pci_res[bar].ip_res == NULL)  in isab_pci_release_resource()
223 		KASSERT(sc->isab_pci_res[bar].ip_res == r,  in isab_pci_release_resource()
224 		    ("isa_pci resource mismatch"));  in isab_pci_release_resource()
225 		if (sc->isab_pci_res[bar].ip_refs > 1) {  in isab_pci_release_resource()
226 			sc->isab_pci_res[bar].ip_refs--;  in isab_pci_release_resource()
229 		KASSERT(sc->isab_pci_res[bar].ip_refs > 0,  in isab_pci_release_resource()
230 		    ("isa_pci resource reference count underflow"));  in isab_pci_release_resource()
233 			sc->isab_pci_res[bar].ip_res = NULL;  in isab_pci_release_resource()
234 			sc->isab_pci_res[bar].ip_refs = 0;  in isab_pci_release_resource()