1 /* $NetBSD: genet_acpi.c,v 1.2 2020/05/25 19:49:28 jmcneill 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_acpi.c,v 1.2 2020/05/25 19:49:28 jmcneill Exp $"); 33 34 #include <sys/param.h> 35 #include <sys/bus.h> 36 #include <sys/cpu.h> 37 #include <sys/device.h> 38 39 #include <net/if.h> 40 #include <net/if_dl.h> 41 #include <net/if_ether.h> 42 #include <net/if_media.h> 43 44 #include <dev/mii/miivar.h> 45 46 #include <dev/ic/bcmgenetvar.h> 47 48 #include <dev/acpi/acpireg.h> 49 #include <dev/acpi/acpivar.h> 50 #include <dev/acpi/acpi_intr.h> 51 52 #ifdef NET_MPSAFE 53 #define GENET_INTR_MPSAFE true 54 #else 55 #define GENET_INTR_MPSAFE false 56 #endif 57 58 static const char * const compatible[] = { 59 "BCM6E4E", /* Broadcom GENET v5 */ 60 NULL 61 }; 62 63 static int genet_acpi_match(device_t, cfdata_t, void *); 64 static void genet_acpi_attach(device_t, device_t, void *); 65 66 CFATTACH_DECL_NEW(genet_acpi, sizeof(struct genet_softc), 67 genet_acpi_match, genet_acpi_attach, NULL, NULL); 68 69 static int 70 genet_acpi_match(device_t parent, cfdata_t cf, void *aux) 71 { 72 struct acpi_attach_args *aa = aux; 73 74 if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE) 75 return 0; 76 77 return acpi_match_hid(aa->aa_node->ad_devinfo, compatible); 78 } 79 80 static void 81 genet_acpi_attach(device_t parent, device_t self, void *aux) 82 { 83 struct genet_softc * const sc = device_private(self); 84 struct acpi_attach_args *aa = aux; 85 ACPI_HANDLE handle = aa->aa_node->ad_handle; 86 struct acpi_resources res; 87 struct acpi_mem *mem; 88 struct acpi_irq *irq; 89 char *phy_mode; 90 ACPI_STATUS rv; 91 int error; 92 void *ih; 93 94 sc->sc_dev = self; 95 96 rv = acpi_resource_parse(sc->sc_dev, handle, "_CRS", 97 &res, &acpi_resource_parse_ops_default); 98 if (ACPI_FAILURE(rv)) 99 return; 100 101 mem = acpi_res_mem(&res, 0); 102 if (mem == NULL) { 103 aprint_error_dev(self, "couldn't find mem resource\n"); 104 goto done; 105 } 106 107 irq = acpi_res_irq(&res, 0); 108 if (irq == NULL) { 109 aprint_error_dev(self, "couldn't find irq resource\n"); 110 goto done; 111 } 112 113 sc->sc_bst = aa->aa_memt; 114 error = bus_space_map(sc->sc_bst, mem->ar_base, mem->ar_length, 115 0, &sc->sc_bsh); 116 if (error != 0) { 117 aprint_error_dev(self, "couldn't map registers\n"); 118 goto done; 119 } 120 sc->sc_dmat = BUS_DMA_TAG_VALID(aa->aa_dmat64) ? 121 aa->aa_dmat64 : aa->aa_dmat; 122 sc->sc_phy_id = MII_PHY_ANY; 123 124 rv = acpi_dsd_string(handle, "phy-mode", &phy_mode); 125 if (ACPI_FAILURE(rv)) { 126 aprint_error_dev(self, "missing 'phy-mode' property\n"); 127 goto done; 128 } 129 130 if (strcmp(phy_mode, "rgmii-rxid") == 0) 131 sc->sc_phy_mode = GENET_PHY_MODE_RGMII_RXID; 132 else if (strcmp(phy_mode, "rgmii-txid") == 0) 133 sc->sc_phy_mode = GENET_PHY_MODE_RGMII_TXID; 134 else if (strcmp(phy_mode, "rgmii-id") == 0) 135 sc->sc_phy_mode = GENET_PHY_MODE_RGMII_ID; 136 else if (strcmp(phy_mode, "rgmii") == 0) 137 sc->sc_phy_mode = GENET_PHY_MODE_RGMII; 138 else { 139 aprint_error(": unsupported phy-mode '%s'\n", phy_mode); 140 goto done; 141 } 142 143 aprint_normal("%s", device_xname(self)); 144 if (genet_attach(sc) != 0) 145 goto done; 146 147 ih = acpi_intr_establish(self, (uint64_t)handle, IPL_NET, 148 GENET_INTR_MPSAFE, genet_intr, sc, device_xname(self)); 149 if (ih == NULL) { 150 aprint_error_dev(self, "couldn't establish interrupt\n"); 151 goto done; 152 } 153 154 done: 155 acpi_resource_cleanup(&res); 156 } 157