1 /* $NetBSD: eqos_acpi.c,v 1.2 2023/12/24 16:12:54 skrll Exp $ */ 2 3 /*- 4 * Copyright (c) 2022 Jared McNeill <jmcneill (at) 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: eqos_acpi.c,v 1.2 2023/12/24 16:12:54 skrll Exp $"); 31 32 #include <sys/param.h> 33 #include <sys/bus.h> 34 #include <sys/cpu.h> 35 #include <sys/device.h> 36 #include <sys/kmem.h> 37 38 #include <sys/rndsource.h> 39 40 #include <net/if.h> 41 #include <net/if_dl.h> 42 #include <net/if_ether.h> 43 #include <net/if_media.h> 44 45 #include <dev/mii/miivar.h> 46 47 #include <dev/ic/dwc_eqos_var.h> 48 49 #include <dev/acpi/acpireg.h> 50 #include <dev/acpi/acpivar.h> 51 #include <dev/acpi/acpi_intr.h> 52 53 #define CSR_RATE_RGMII 125000000 54 55 static const struct device_compatible_entry compat_data[] = { 56 { .compat = "snps,dwmac-4.20a" }, /* DT link */ 57 DEVICE_COMPAT_EOL 58 }; 59 60 static int eqos_acpi_match(device_t, cfdata_t, void *); 61 static void eqos_acpi_attach(device_t, device_t, void *); 62 63 static void eqos_acpi_init_props(struct eqos_softc *, ACPI_HANDLE); 64 65 CFATTACH_DECL_NEW(eqos_acpi, sizeof(struct eqos_softc), 66 eqos_acpi_match, eqos_acpi_attach, NULL, NULL); 67 68 static int 69 eqos_acpi_match(device_t parent, cfdata_t cf, void *aux) 70 { 71 struct acpi_attach_args *aa = aux; 72 73 return acpi_compatible_match(aa, compat_data); 74 } 75 76 static void 77 eqos_acpi_attach(device_t parent, device_t self, void *aux) 78 { 79 struct eqos_softc * const sc = device_private(self); 80 struct acpi_attach_args *aa = aux; 81 ACPI_HANDLE handle = aa->aa_node->ad_handle; 82 struct acpi_resources res; 83 struct acpi_mem *mem; 84 struct acpi_irq *irq; 85 ACPI_STATUS rv; 86 int error; 87 void *ih; 88 89 sc->sc_dev = self; 90 91 rv = acpi_resource_parse(sc->sc_dev, handle, "_CRS", 92 &res, &acpi_resource_parse_ops_default); 93 if (ACPI_FAILURE(rv)) 94 return; 95 96 mem = acpi_res_mem(&res, 0); 97 if (mem == NULL) { 98 aprint_error_dev(self, "couldn't find mem resource\n"); 99 goto done; 100 } 101 102 irq = acpi_res_irq(&res, 0); 103 if (irq == NULL) { 104 aprint_error_dev(self, "couldn't find irq resource\n"); 105 goto done; 106 } 107 108 sc->sc_bst = aa->aa_memt; 109 error = bus_space_map(sc->sc_bst, mem->ar_base, mem->ar_length, 110 0, &sc->sc_bsh); 111 if (error != 0) { 112 aprint_error_dev(self, "couldn't map registers\n"); 113 goto done; 114 } 115 sc->sc_dmat = BUS_DMA_TAG_VALID(aa->aa_dmat64) ? 116 aa->aa_dmat64 : aa->aa_dmat; 117 sc->sc_phy_id = MII_PHY_ANY; 118 sc->sc_csr_clock = CSR_RATE_RGMII; 119 120 eqos_acpi_init_props(sc, handle); 121 122 aprint_normal("%s", device_xname(self)); 123 if (eqos_attach(sc) != 0) 124 goto done; 125 126 ih = acpi_intr_establish(self, (uint64_t)(uintptr_t)handle, IPL_NET, 127 true, eqos_intr, sc, device_xname(self)); 128 if (ih == NULL) { 129 aprint_error_dev(self, "couldn't establish interrupt\n"); 130 goto done; 131 } 132 133 done: 134 acpi_resource_cleanup(&res); 135 } 136 137 static void 138 eqos_acpi_init_props(struct eqos_softc *sc, ACPI_HANDLE handle) 139 { 140 prop_dictionary_t prop = device_properties(sc->sc_dev); 141 ACPI_STATUS rv; 142 ACPI_INTEGER ival; 143 #if notyet 144 ACPI_HANDLE axi; 145 char *sval; 146 #endif 147 148 /* Defaults */ 149 prop_dictionary_set_uint(prop, "snps,wr_osr_lmt", 4); 150 prop_dictionary_set_uint(prop, "snps,rd_osr_lmt", 8); 151 152 /* Get settings from DSD properties */ 153 rv = acpi_dsd_integer(handle, "snps,mixed-burst", &ival); 154 if (ACPI_SUCCESS(rv) && ival) { 155 prop_dictionary_set_bool(prop, "snps,mixed-burst", true); 156 } 157 rv = acpi_dsd_integer(handle, "snps,tso", &ival); 158 if (ACPI_SUCCESS(rv) && ival) { 159 prop_dictionary_set_bool(prop, "snps,tso", true); 160 } 161 162 #if notyet 163 rv = acpi_dsd_string(handle, "snps,axi-config", &sval); 164 if (ACPI_SUCCESS(rv)) { 165 rv = AcpiGetHandle(handle, sval, &axi); 166 if (ACPI_SUCCESS(rv)) { 167 rv = acpi_dsd_integer(axi, "snps,wr_osr_lmt", &ival); 168 if (ACPI_SUCCESS(rv) && ival > 0) { 169 prop_dictionary_set_uint(prop, 170 "snps,wr_osr_lmt", ival); 171 } 172 rv = acpi_dsd_integer(axi, "snps,rd_osr_lmt", &ival); 173 if (ACPI_SUCCESS(rv) && ival > 0) { 174 prop_dictionary_set_uint(prop, 175 "snps,rd_osr_lmt", ival); 176 } 177 } 178 kmem_strfree(sval); 179 } 180 #endif 181 } 182
Indexes created Mon Sep 22 10:09:38 GMT 2025