1 /* $NetBSD: genet_acpi.c,v 1.4 2021/01/29 15:49:55 thorpej 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 1.4 2021/01/29 15:49:55 thorpej 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 struct device_compatible_entry compat_data[] = { 59 { .compat = "BCM6E4E" }, /* Broadcom GENET v5 */ 60 DEVICE_COMPAT_EOL 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 return acpi_compatible_match(aa, compat_data); 75 } 76 77 static void 78 genet_acpi_attach(device_t parent, device_t self, void *aux) 79 { 80 struct genet_softc * const sc = device_private(self); 81 struct acpi_attach_args *aa = aux; 82 ACPI_HANDLE handle = aa->aa_node->ad_handle; 83 struct acpi_resources res; 84 struct acpi_mem *mem; 85 struct acpi_irq *irq; 86 char *phy_mode; 87 ACPI_STATUS rv; 88 int error; 89 void *ih; 90 91 sc->sc_dev = self; 92 93 rv = acpi_resource_parse(sc->sc_dev, handle, "_CRS", 94 &res, &acpi_resource_parse_ops_default); 95 if (ACPI_FAILURE(rv)) 96 return; 97 98 mem = acpi_res_mem(&res, 0); 99 if (mem == NULL) { 100 aprint_error_dev(self, "couldn't find mem resource\n"); 101 goto done; 102 } 103 104 irq = acpi_res_irq(&res, 0); 105 if (irq == NULL) { 106 aprint_error_dev(self, "couldn't find irq resource\n"); 107 goto done; 108 } 109 110 sc->sc_bst = aa->aa_memt; 111 error = bus_space_map(sc->sc_bst, mem->ar_base, mem->ar_length, 112 0, &sc->sc_bsh); 113 if (error != 0) { 114 aprint_error_dev(self, "couldn't map registers\n"); 115 goto done; 116 } 117 sc->sc_dmat = BUS_DMA_TAG_VALID(aa->aa_dmat64) ? 118 aa->aa_dmat64 : aa->aa_dmat; 119 sc->sc_phy_id = MII_PHY_ANY; 120 121 rv = acpi_dsd_string(handle, "phy-mode", &phy_mode); 122 if (ACPI_FAILURE(rv)) { 123 aprint_error_dev(self, "missing 'phy-mode' property\n"); 124 goto done; 125 } 126 127 if (strcmp(phy_mode, "rgmii-rxid") == 0) 128 sc->sc_phy_mode = GENET_PHY_MODE_RGMII_RXID; 129 else if (strcmp(phy_mode, "rgmii-txid") == 0) 130 sc->sc_phy_mode = GENET_PHY_MODE_RGMII_TXID; 131 else if (strcmp(phy_mode, "rgmii-id") == 0) 132 sc->sc_phy_mode = GENET_PHY_MODE_RGMII_ID; 133 else if (strcmp(phy_mode, "rgmii") == 0) 134 sc->sc_phy_mode = GENET_PHY_MODE_RGMII; 135 else { 136 aprint_error(": unsupported phy-mode '%s'\n", phy_mode); 137 goto done; 138 } 139 140 aprint_normal("%s", device_xname(self)); 141 if (genet_attach(sc) != 0) 142 goto done; 143 144 ih = acpi_intr_establish(self, (uint64_t)(uintptr_t)handle, IPL_NET, 145 GENET_INTR_MPSAFE, genet_intr, sc, device_xname(self)); 146 if (ih == NULL) { 147 aprint_error_dev(self, "couldn't establish interrupt\n"); 148 goto done; 149 } 150 151 done: 152 acpi_resource_cleanup(&res); 153 } 154