1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
35  * PCI bindings for Apple GMAC and Sun GEM Ethernet controllers
54 #include <dev/ofw/ofw_bus.h>
55 #include <dev/ofw/openfirm.h>
60 #include <dev/gem/if_gemreg.h>
61 #include <dev/gem/if_gemvar.h>
63 #include <dev/pci/pcireg.h>
64 #include <dev/pci/pcivar.h>
68 static int	gem_pci_attach(device_t dev);
69 static int	gem_pci_detach(device_t dev);
70 static int	gem_pci_probe(device_t dev);
71 static int	gem_pci_resume(device_t dev);
72 static int	gem_pci_suspend(device_t dev);
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);
120 gem_pci_probe(device_t dev)  in gem_pci_probe()  argument
125 		if (pci_get_devid(dev) == gem_pci_devlist[i].gpd_devid) {  in gem_pci_probe()
126 			device_set_desc(dev, gem_pci_devlist[i].gpd_desc);  in gem_pci_probe()
137 	{ -1, 0 }
140 #define	GEM_SHARED_PINS		"shared-pins"
144 gem_pci_attach(device_t dev)  in gem_pci_attach()  argument
154 	sc = device_get_softc(dev);  in gem_pci_attach()
155 	sc->sc_variant = GEM_UNKNOWN;  in gem_pci_attach()
157 		if (pci_get_devid(dev) == gem_pci_devlist[i].gpd_devid) {  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()
163 		device_printf(dev, "unknown adaptor\n");  in gem_pci_attach()
167 	pci_enable_busmaster(dev);  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()
172 		device_printf(dev, "failed to allocate resources\n");  in gem_pci_attach()
173 		bus_release_resources(dev, gem_pci_res_spec, sc->sc_res);  in gem_pci_attach()
177 	GEM_LOCK_INIT(sc, device_get_nameunit(dev));  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()
185 	if (OF_getprop(ofw_bus_get_node(dev), GEM_SHARED_PINS, buf,  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()
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()
240 	    GEM_ROM_READ_2(sc, i + PCI_ROM_VENDOR) != pci_get_vendor(dev) ||  in gem_pci_attach()
241 	    GEM_ROM_READ_2(sc, i + PCI_ROM_DEVICE) != pci_get_device(dev) ||  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()
286 		device_printf(dev, "invalid MAC address\n");  in gem_pci_attach()
291 		device_printf(dev, "could not be attached\n");  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()
297 		device_printf(dev, "failed to set up interrupt\n");  in gem_pci_attach()
305 	bus_release_resources(dev, gem_pci_res_spec, sc->sc_res);  in gem_pci_attach()
310 gem_pci_detach(device_t dev)  in gem_pci_detach()  argument
314 	sc = device_get_softc(dev);  in gem_pci_detach()
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()
323 gem_pci_suspend(device_t dev)  in gem_pci_suspend()  argument
326 	gem_suspend(device_get_softc(dev));  in gem_pci_suspend()
331 gem_pci_resume(device_t dev)  in gem_pci_resume()  argument
334 	gem_resume(device_get_softc(dev));  in gem_pci_resume()