1 /* $NetBSD: genet_fdt.c,v 1.5 2021/03/08 13:15:06 mlelstv Exp $ */ 2 3 /*- 4 * Copyright (c) 2020 Jared McNeill <jmcneill@invisible.ca> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #include "opt_net_mpsafe.h" 30 31 #include <sys/cdefs.h> 32 __KERNEL_RCSID(0, "$NetBSD: genet_fdt.c,v 1.5 2021/03/08 13:15:06 mlelstv Exp $"); 33 34 #include <sys/param.h> 35 #include <sys/bus.h> 36 #include <sys/device.h> 37 #include <sys/intr.h> 38 #include <sys/systm.h> 39 #include <sys/kernel.h> 40 41 #include <net/if.h> 42 #include <net/if_dl.h> 43 #include <net/if_ether.h> 44 #include <net/if_media.h> 45 46 #include <dev/mii/miivar.h> 47 48 #include <dev/ic/bcmgenetvar.h> 49 50 #include <dev/fdt/fdtvar.h> 51 52 #ifdef NET_MPSAFE 53 #define FDT_INTR_FLAGS FDT_INTR_MPSAFE 54 #else 55 #define FDT_INTR_FLAGS 0 56 #endif 57 58 static int genet_fdt_match(device_t, cfdata_t, void *); 59 static void genet_fdt_attach(device_t, device_t, void *); 60 61 CFATTACH_DECL_NEW(genet_fdt, sizeof(struct genet_softc), 62 genet_fdt_match, genet_fdt_attach, NULL, NULL); 63 64 static const struct device_compatible_entry compat_data[] = { 65 { .compat = "brcm,bcm2711-genet-v5" }, 66 DEVICE_COMPAT_EOL 67 }; 68 69 static int 70 genet_fdt_match(device_t parent, cfdata_t cf, void *aux) 71 { 72 struct fdt_attach_args * const faa = aux; 73 74 return of_compatible_match(faa->faa_phandle, compat_data); 75 } 76 77 static void 78 genet_fdt_attach(device_t parent, device_t self, void *aux) 79 { 80 struct genet_softc * const sc = device_private(self); 81 struct fdt_attach_args * const faa = aux; 82 const int phandle = faa->faa_phandle; 83 char intrstr[128]; 84 bus_addr_t addr; 85 bus_size_t size; 86 void *ih; 87 88 if (fdtbus_get_reg(phandle, 0, &addr, &size) != 0) { 89 aprint_error(": couldn't get registers\n"); 90 return; 91 } 92 93 sc->sc_dev = self; 94 sc->sc_bst = faa->faa_bst; 95 if (bus_space_map(sc->sc_bst, addr, size, 0, &sc->sc_bsh) != 0) { 96 aprint_error(": couldn't map registers\n"); 97 return; 98 } 99 sc->sc_dmat = faa->faa_dmat; 100 sc->sc_phy_id = MII_PHY_ANY; 101 102 const char *phy_mode = fdtbus_get_string(phandle, "phy-mode"); 103 if (phy_mode == NULL) { 104 aprint_error(": missing 'phy-mode' property\n"); 105 return; 106 } 107 108 if (strcmp(phy_mode, "rgmii-rxid") == 0) 109 sc->sc_phy_mode = GENET_PHY_MODE_RGMII_RXID; 110 else if (strcmp(phy_mode, "rgmii-txid") == 0) 111 sc->sc_phy_mode = GENET_PHY_MODE_RGMII_TXID; 112 else if (strcmp(phy_mode, "rgmii-id") == 0) 113 sc->sc_phy_mode = GENET_PHY_MODE_RGMII_ID; 114 else if (strcmp(phy_mode, "rgmii") == 0) 115 sc->sc_phy_mode = GENET_PHY_MODE_RGMII; 116 else { 117 aprint_error(": unsupported phy-mode '%s'\n", phy_mode); 118 return; 119 } 120 121 if (!fdtbus_intr_str(phandle, 0, intrstr, sizeof(intrstr))) { 122 aprint_error(": failed to decode interrupt\n"); 123 return; 124 } 125 126 if (genet_attach(sc) != 0) 127 return; 128 129 ih = fdtbus_intr_establish_xname(phandle, 0, IPL_NET, FDT_INTR_MPSAFE, 130 genet_intr, sc, device_xname(self)); 131 if (ih == NULL) { 132 aprint_error_dev(self, "couldn't establish interrupt on %s\n", 133 intrstr); 134 return; 135 } 136 aprint_normal_dev(self, "interrupting on %s\n", intrstr); 137 } 138