1 /* $OpenBSD: if_bse_fdt.c,v 1.2 2022/04/06 18:59:28 naddy Exp $ */ 2 /* 3 * Copyright (c) 2020 Mark Kettenis <kettenis@openbsd.org> 4 * 5 * Permission to use, copy, modify, and distribute this software for any 6 * purpose with or without fee is hereby granted, provided that the above 7 * copyright notice and this permission notice appear in all copies. 8 * 9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16 */ 17 18 #include <sys/param.h> 19 #include <sys/systm.h> 20 #include <sys/device.h> 21 22 #include <machine/bus.h> 23 #include <machine/fdt.h> 24 25 #include <net/if.h> 26 #include <net/if_media.h> 27 #include <netinet/in.h> 28 #include <netinet/if_ether.h> 29 30 #include <dev/ofw/openfirm.h> 31 #include <dev/ofw/fdt.h> 32 33 #include <dev/mii/miivar.h> 34 #include <dev/ic/bcmgenetvar.h> 35 36 int bse_fdt_match(struct device *, void *, void *); 37 void bse_fdt_attach(struct device *, struct device *, void *); 38 39 const struct cfattach bse_fdt_ca = { 40 sizeof (struct genet_softc), bse_fdt_match, bse_fdt_attach 41 }; 42 43 int 44 bse_fdt_match(struct device *parent, void *match, void *aux) 45 { 46 struct fdt_attach_args *faa = aux; 47 48 return (OF_is_compatible(faa->fa_node, "brcm,bcm2711-genet-v5") || 49 OF_is_compatible(faa->fa_node, "brcm,genet-v5")); 50 } 51 52 void 53 bse_fdt_attach(struct device *parent, struct device *self, void *aux) 54 { 55 struct genet_softc *sc = (struct genet_softc *)self; 56 struct fdt_attach_args *faa = aux; 57 char phy_mode[16] = { 0 }; 58 uint32_t phy; 59 int node, error; 60 61 if (faa->fa_nreg < 1) { 62 printf(": no registers\n"); 63 return; 64 } 65 66 sc->sc_bst = faa->fa_iot; 67 sc->sc_dmat = faa->fa_dmat; 68 69 if (bus_space_map(sc->sc_bst, faa->fa_reg[0].addr, 70 faa->fa_reg[0].size, 0, &sc->sc_bsh)) { 71 printf(": can't map registers\n"); 72 return; 73 } 74 75 sc->sc_ih = fdt_intr_establish(faa->fa_node, IPL_NET, 76 genet_intr, sc, sc->sc_dev.dv_xname); 77 if (sc->sc_ih == NULL) { 78 printf(": can't establish interrupt\n"); 79 goto unmap; 80 } 81 82 if (OF_getprop(faa->fa_node, "local-mac-address", 83 &sc->sc_lladdr, ETHER_ADDR_LEN) != ETHER_ADDR_LEN) 84 genet_lladdr_read(sc, sc->sc_lladdr); 85 86 OF_getprop(faa->fa_node, "phy-mode", phy_mode, sizeof(phy_mode)); 87 if (strcmp(phy_mode, "rgmii-id") == 0) 88 sc->sc_phy_mode = GENET_PHY_MODE_RGMII_ID; 89 else if (strcmp(phy_mode, "rgmii-rxid") == 0) 90 sc->sc_phy_mode = GENET_PHY_MODE_RGMII_RXID; 91 else if (strcmp(phy_mode, "rgmii-txid") == 0) 92 sc->sc_phy_mode = GENET_PHY_MODE_RGMII_TXID; 93 else 94 sc->sc_phy_mode = GENET_PHY_MODE_RGMII; 95 96 /* Lookup PHY. */ 97 phy = OF_getpropint(faa->fa_node, "phy-handle", 0); 98 node = OF_getnodebyphandle(phy); 99 if (node) 100 sc->sc_phy_id = OF_getpropint(node, "reg", MII_PHY_ANY); 101 else 102 sc->sc_phy_id = MII_PHY_ANY; 103 104 error = genet_attach(sc); 105 if (error) 106 goto disestablish; 107 108 return; 109 110 disestablish: 111 fdt_intr_disestablish(sc->sc_ih); 112 unmap: 113 bus_space_unmap(sc->sc_bst, sc->sc_bsh, faa->fa_reg[0].size); 114 } 115