1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
35  * PCI bindings for Apple GMAC and Sun GEM Ethernet controllers
63 #include <dev/pci/pcireg.h>
64 #include <dev/pci/pcivar.h>
113 DRIVER_MODULE(gem, pci, gem_pci_driver, 0, 0);
114 MODULE_PNP_INFO("W32:vendor/device", pci, gem, gem_pci_devlist,
115     nitems(gem_pci_devlist) - 1);
116 MODULE_DEPEND(gem, pci, 1, 1, 1);
137 	{ -1, 0 }
140 #define	GEM_SHARED_PINS		"shared-pins"
155 	sc->sc_variant = GEM_UNKNOWN;  in gem_pci_attach()
158 			sc->sc_variant = gem_pci_devlist[i].gpd_variant;  in gem_pci_attach()
162 	if (sc->sc_variant == GEM_UNKNOWN) {  in gem_pci_attach()
169 	sc->sc_dev = dev;  in gem_pci_attach()
171 	if (bus_alloc_resources(dev, gem_pci_res_spec, sc->sc_res)) {  in gem_pci_attach()
173 		bus_release_resources(dev, gem_pci_res_spec, sc->sc_res);  in gem_pci_attach()
181 		sc->sc_flags |= GEM_PCI66;  in gem_pci_attach()
184 	OF_getetheraddr(dev, sc->sc_enaddr);  in gem_pci_attach()
187 		buf[sizeof(buf) - 1] = '\0';  in gem_pci_attach()
189 			sc->sc_flags |= GEM_SERDES;  in gem_pci_attach()
194 	 * The VPD resides in the PCI Expansion ROM (PCI FCode) and can't  in gem_pci_attach()
195 	 * be accessed via the PCI capability pointer.  in gem_pci_attach()
196 	 * ``Writing FCode 3.x Programs'' (newer ones, dated 1997 and later)  in gem_pci_attach()
212 #define	PCI_VPDRES_ISLARGE(x)		((x) & 0x80)  in gem_pci_attach()  argument
213 #define	PCI_VPDRES_LARGE_NAME(x)	((x) & 0x7f)  in gem_pci_attach()  argument
230 	/* Read PCI Expansion ROM header. */  in gem_pci_attach()
234 		device_printf(dev, "unexpected PCI Expansion ROM header\n");  in gem_pci_attach()
238 	/* Read PCI Expansion ROM data. */  in gem_pci_attach()
244 		device_printf(dev, "unexpected PCI Expansion ROM data\n");  in gem_pci_attach()
249 	 * Read PCI VPD.  in gem_pci_attach()
250 	 * SUNW,pci-gem cards have a single large resource VPD-R tag  in gem_pci_attach()
251 	 * containing one NA.  The VPD used is not in PCI 2.2 standard  in gem_pci_attach()
253 	 * endian and the end tag is non-standard (0x79) and followed  in gem_pci_attach()
254 	 * by an all-zero "checksum" byte.  Sun calls this a "Fresh  in gem_pci_attach()
272 		device_printf(dev, "unexpected PCI VPD\n");  in gem_pci_attach()
275 	bus_read_region_1(sc->sc_res[GEM_RES_MEM],  in gem_pci_attach()
277 	    sc->sc_enaddr, ETHER_ADDR_LEN);  in gem_pci_attach()
280 	 * The Xserve G5 has a fake GMAC with an all-zero MAC address.  in gem_pci_attach()
284 	for (i = 0; i < ETHER_ADDR_LEN && sc->sc_enaddr[i] == 0; i++) {}  in gem_pci_attach()
295 	if (bus_setup_intr(dev, sc->sc_res[GEM_RES_INTR], INTR_TYPE_NET |  in gem_pci_attach()
296 	    INTR_MPSAFE, NULL, gem_intr, sc, &sc->sc_ih) != 0) {  in gem_pci_attach()
305 	bus_release_resources(dev, gem_pci_res_spec, sc->sc_res);  in gem_pci_attach()
315 	bus_teardown_intr(dev, sc->sc_res[GEM_RES_INTR], sc->sc_ih);  in gem_pci_detach()
318 	bus_release_resources(dev, gem_pci_res_spec, sc->sc_res);  in gem_pci_detach()