1 /* $NetBSD: zynq_cemac.c,v 1.10 2024/10/15 00:58:15 lloyd Exp $ */ 2 /*- 3 * Copyright (c) 2015 Genetec Corporation. All rights reserved. 4 * Written by Hashimoto Kenichi for Genetec Corporation. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 16 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 17 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 18 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 19 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 20 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 21 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 24 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 25 * POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #include <sys/cdefs.h> 29 __KERNEL_RCSID(0, "$NetBSD: zynq_cemac.c,v 1.10 2024/10/15 00:58:15 lloyd Exp $"); 30 31 #include <sys/param.h> 32 33 #include <sys/bus.h> 34 #include <sys/conf.h> 35 #include <sys/device.h> 36 #include <sys/intr.h> 37 #include <sys/systm.h> 38 39 #include <dev/cadence/if_cemacvar.h> 40 41 #include <net/if.h> 42 #include <net/if_media.h> 43 #include <net/if_ether.h> 44 45 #include <dev/fdt/fdtvar.h> 46 47 #include <dev/mii/mii.h> 48 #include <dev/mii/miivar.h> 49 50 static const struct device_compatible_entry compat_data[] = { 51 { .compat = "cdns,zynq-gem" }, 52 DEVICE_COMPAT_EOL 53 }; 54 55 static int 56 cemac_get_phyid(const int phandle) 57 { 58 bus_addr_t addr; 59 int phy_phandle; 60 61 phy_phandle = fdtbus_get_phandle(phandle, "phy"); 62 if (phy_phandle == -1) 63 phy_phandle = fdtbus_get_phandle(phandle, "phy-handle"); 64 if (phy_phandle == -1) 65 return MII_PHY_ANY; 66 67 if (fdtbus_get_reg(phy_phandle, 0, &addr, NULL) != 0) 68 return MII_PHY_ANY; 69 70 return (int)addr; 71 } 72 73 static int 74 cemac_match(device_t parent, cfdata_t cfdata, void *aux) 75 { 76 struct fdt_attach_args * const faa = aux; 77 78 return of_compatible_match(faa->faa_phandle, compat_data); 79 } 80 81 static void 82 cemac_attach(device_t parent, device_t self, void *aux) 83 { 84 struct fdt_attach_args * const faa = aux; 85 struct cemac_softc *sc = device_private(self); 86 const int phandle = faa->faa_phandle; 87 prop_dictionary_t prop = device_properties(self); 88 char intrstr[128]; 89 const char *macaddr; 90 bus_addr_t addr; 91 bus_size_t size; 92 int error, len; 93 94 if (fdtbus_get_reg(phandle, 0, &addr, &size) != 0) { 95 aprint_error(": couldn't get registers\n"); 96 return; 97 } 98 99 error = bus_space_map(faa->faa_bst, addr, size, 0, &sc->sc_ioh); 100 if (error) { 101 aprint_error(": failed to map register %#lx@%#lx: %d\n", 102 size, addr, error); 103 return; 104 } 105 106 if (!fdtbus_intr_str(phandle, 0, intrstr, sizeof(intrstr))) { 107 aprint_error(": failed to decode interrupt\n"); 108 return; 109 } 110 111 if (fdtbus_intr_establish(phandle, 0, IPL_NET, 0, cemac_intr, 112 device_private(self)) == NULL) { 113 aprint_error(": failed to establish interrupt on %s\n", 114 intrstr); 115 return; 116 } 117 118 macaddr = fdtbus_get_prop(phandle, "local-mac-address", &len); 119 if (macaddr != NULL && len == ETHER_ADDR_LEN) { 120 prop_dictionary_set_data(prop, "mac-address", macaddr, len); 121 } 122 123 sc->sc_dev = self; 124 sc->sc_iot = faa->faa_bst; 125 sc->sc_dmat = faa->faa_dmat; 126 sc->sc_phyno = cemac_get_phyid(phandle); 127 sc->cemac_flags = CEMAC_FLAG_GEM; 128 129 cemac_attach_common(sc); 130 aprint_normal_dev(self, "interrupting on %s\n", intrstr); 131 } 132 133 134 CFATTACH_DECL_NEW(cemac, sizeof(struct cemac_softc), 135 cemac_match, cemac_attach, NULL, NULL); 136