1 /* $OpenBSD: gcu.c,v 1.7 2024/05/13 01:15:51 jsg Exp $ */ 2 3 /* 4 * Copyright (c) 2009 Dariusz Swiderski <sfires@sfires.net> 5 * 6 * Permission to use, copy, modify, and distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19 /* 20 * Driver for a GCU device that appears on embedded intel systems, like 80579 21 */ 22 23 #include <sys/param.h> 24 #include <sys/systm.h> 25 #include <sys/device.h> 26 27 #include <dev/pci/pcireg.h> 28 #include <dev/pci/pcivar.h> 29 30 #include <dev/pci/pcidevs.h> 31 #include <dev/pci/gcu_var.h> 32 33 int gcu_probe(struct device *, void *, void *); 34 void gcu_attach(struct device *, struct device *, void *); 35 36 const struct pci_matchid gcu_devices[] = { 37 { PCI_VENDOR_INTEL, PCI_PRODUCT_INTEL_EP80579_GCU } 38 }; 39 40 struct cfdriver gcu_cd = { 41 NULL, "gcu", DV_IFNET 42 }; 43 44 const struct cfattach gcu_ca = { 45 sizeof(struct gcu_softc), gcu_probe, gcu_attach 46 }; 47 48 int 49 gcu_probe(struct device *parent, void *match, void *aux) 50 { 51 return (pci_matchbyid((struct pci_attach_args *)aux, gcu_devices, 52 nitems(gcu_devices))); 53 } 54 55 void 56 gcu_attach(struct device *parent, struct device *self, void *aux) 57 { 58 struct gcu_softc *sc = (struct gcu_softc *)self; 59 struct pci_attach_args *pa = aux; 60 int val; 61 62 val = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_MAPREG_START); 63 if (PCI_MAPREG_TYPE(val) != PCI_MAPREG_TYPE_MEM) { 64 printf(": mmba is not mem space\n"); 65 return; 66 } 67 68 if (pci_mapreg_map(pa, 0x10, PCI_MAPREG_MEM_TYPE(val), 0, &sc->tag, 69 &sc->handle, &sc->addr, &sc->size, 0)) { 70 printf(": cannot find mem space\n"); 71 return; 72 } 73 74 mtx_init(&sc->mdio_mtx, IPL_NET); 75 76 printf("\n"); 77 } 78