1 /* $NetBSD: genet_acpi.c,v 1.6 2024/09/15 08:30:01 skrll 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 <sys/cdefs.h> 30 __KERNEL_RCSID(0, "$NetBSD: genet_acpi.c,v 1.6 2024/09/15 08:30:01 skrll Exp $"); 31 32 #include <sys/param.h> 33 #include <sys/bus.h> 34 #include <sys/cpu.h> 35 #include <sys/device.h> 36 37 #include <sys/rndsource.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 static const struct device_compatible_entry compat_data[] = { 53 { .compat = "BCM6E4E" }, /* Broadcom GENET v5 */ 54 DEVICE_COMPAT_EOL 55 }; 56 57 static int genet_acpi_match(device_t, cfdata_t, void *); 58 static void genet_acpi_attach(device_t, device_t, void *); 59 60 CFATTACH_DECL_NEW(genet_acpi, sizeof(struct genet_softc), 61 genet_acpi_match, genet_acpi_attach, NULL, NULL); 62 63 static int 64 genet_acpi_match(device_t parent, cfdata_t cf, void *aux) 65 { 66 struct acpi_attach_args *aa = aux; 67 68 return acpi_compatible_match(aa, compat_data); 69 } 70 71 static void 72 genet_acpi_attach(device_t parent, device_t self, void *aux) 73 { 74 struct genet_softc * const sc = device_private(self); 75 struct acpi_attach_args *aa = aux; 76 ACPI_HANDLE handle = aa->aa_node->ad_handle; 77 struct acpi_resources res; 78 struct acpi_mem *mem; 79 struct acpi_irq *irq; 80 char *phy_mode; 81 ACPI_STATUS rv; 82 int error; 83 void *ih; 84 85 sc->sc_dev = self; 86 87 rv = acpi_resource_parse(sc->sc_dev, handle, "_CRS", 88 &res, &acpi_resource_parse_ops_default); 89 if (ACPI_FAILURE(rv)) 90 return; 91 92 mem = acpi_res_mem(&res, 0); 93 if (mem == NULL) { 94 aprint_error_dev(self, "couldn't find mem resource\n"); 95 goto done; 96 } 97 98 irq = acpi_res_irq(&res, 0); 99 if (irq == NULL) { 100 aprint_error_dev(self, "couldn't find irq resource\n"); 101 goto done; 102 } 103 104 sc->sc_bst = aa->aa_memt; 105 error = bus_space_map(sc->sc_bst, mem->ar_base, mem->ar_length, 106 0, &sc->sc_bsh); 107 if (error != 0) { 108 aprint_error_dev(self, "couldn't map registers\n"); 109 goto done; 110 } 111 sc->sc_dmat = BUS_DMA_TAG_VALID(aa->aa_dmat64) ? 112 aa->aa_dmat64 : aa->aa_dmat; 113 sc->sc_phy_id = MII_PHY_ANY; 114 115 rv = acpi_dsd_string(handle, "phy-mode", &phy_mode); 116 if (ACPI_FAILURE(rv)) { 117 aprint_error_dev(self, "missing 'phy-mode' property\n"); 118 goto done; 119 } 120 121 if (strcmp(phy_mode, "rgmii-rxid") == 0) 122 sc->sc_phy_mode = GENET_PHY_MODE_RGMII_RXID; 123 else if (strcmp(phy_mode, "rgmii-txid") == 0) 124 sc->sc_phy_mode = GENET_PHY_MODE_RGMII_TXID; 125 else if (strcmp(phy_mode, "rgmii-id") == 0) 126 sc->sc_phy_mode = GENET_PHY_MODE_RGMII_ID; 127 else if (strcmp(phy_mode, "rgmii") == 0) 128 sc->sc_phy_mode = GENET_PHY_MODE_RGMII; 129 else { 130 aprint_error(": unsupported phy-mode '%s'\n", phy_mode); 131 goto done; 132 } 133 134 aprint_normal("%s", device_xname(self)); 135 if (genet_attach(sc) != 0) 136 goto done; 137 138 ih = acpi_intr_establish(self, (uint64_t)(uintptr_t)handle, IPL_NET, 139 true, genet_intr, sc, device_xname(self)); 140 if (ih == NULL) { 141 aprint_error_dev(self, "couldn't establish interrupt\n"); 142 goto done; 143 } 144 145 done: 146 acpi_resource_cleanup(&res); 147 } 148