eqos_acpi.c revision 1.1
1 /* $NetBSD: eqos_acpi.c,v 1.1 2022/01/03 17:19:41 jmcneill 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 "opt_net_mpsafe.h" 30 31 #include <sys/cdefs.h> 32 __KERNEL_RCSID(0, "$NetBSD: eqos_acpi.c,v 1.1 2022/01/03 17:19:41 jmcneill Exp $"); 33 34 #include <sys/param.h> 35 #include <sys/bus.h> 36 #include <sys/cpu.h> 37 #include <sys/device.h> 38 #include <sys/kmem.h> 39 40 #include <sys/rndsource.h> 41 42 #include <net/if.h> 43 #include <net/if_dl.h> 44 #include <net/if_ether.h> 45 #include <net/if_media.h> 46 47 #include <dev/mii/miivar.h> 48 49 #include <dev/ic/dwc_eqos_var.h> 50 51 #include <dev/acpi/acpireg.h> 52 #include <dev/acpi/acpivar.h> 53 #include <dev/acpi/acpi_intr.h> 54 55 #ifdef NET_MPSAFE 56 #define EQOS_INTR_MPSAFE true 57 #else 58 #define EQOS_INTR_MPSAFE false 59 #endif 60 61 #define CSR_RATE_RGMII 125000000 62 63 static const struct device_compatible_entry compat_data[] = { 64 { .compat = "snps,dwmac-4.20a" }, /* DT link */ 65 DEVICE_COMPAT_EOL 66 }; 67 68 static int eqos_acpi_match(device_t, cfdata_t, void *); 69 static void eqos_acpi_attach(device_t, device_t, void *); 70 71 static void eqos_acpi_init_props(struct eqos_softc *, ACPI_HANDLE); 72 73 CFATTACH_DECL_NEW(eqos_acpi, sizeof(struct eqos_softc), 74 eqos_acpi_match, eqos_acpi_attach, NULL, NULL); 75 76 static int 77 eqos_acpi_match(device_t parent, cfdata_t cf, void *aux) 78 { 79 struct acpi_attach_args *aa = aux; 80 81 return acpi_compatible_match(aa, compat_data); 82 } 83 84 static void 85 eqos_acpi_attach(device_t parent, device_t self, void *aux) 86 { 87 struct eqos_softc * const sc = device_private(self); 88 struct acpi_attach_args *aa = aux; 89 ACPI_HANDLE handle = aa->aa_node->ad_handle; 90 struct acpi_resources res; 91 struct acpi_mem *mem; 92 struct acpi_irq *irq; 93 ACPI_STATUS rv; 94 int error; 95 void *ih; 96 97 sc->sc_dev = self; 98 99 rv = acpi_resource_parse(sc->sc_dev, handle, "_CRS", 100 &res, &acpi_resource_parse_ops_default); 101 if (ACPI_FAILURE(rv)) 102 return; 103 104 mem = acpi_res_mem(&res, 0); 105 if (mem == NULL) { 106 aprint_error_dev(self, "couldn't find mem resource\n"); 107 goto done; 108 } 109 110 irq = acpi_res_irq(&res, 0); 111 if (irq == NULL) { 112 aprint_error_dev(self, "couldn't find irq resource\n"); 113 goto done; 114 } 115 116 sc->sc_bst = aa->aa_memt; 117 error = bus_space_map(sc->sc_bst, mem->ar_base, mem->ar_length, 118 0, &sc->sc_bsh); 119 if (error != 0) { 120 aprint_error_dev(self, "couldn't map registers\n"); 121 goto done; 122 } 123 sc->sc_dmat = BUS_DMA_TAG_VALID(aa->aa_dmat64) ? 124 aa->aa_dmat64 : aa->aa_dmat; 125 sc->sc_phy_id = MII_PHY_ANY; 126 sc->sc_csr_clock = CSR_RATE_RGMII; 127 128 eqos_acpi_init_props(sc, handle); 129 130 aprint_normal("%s", device_xname(self)); 131 if (eqos_attach(sc) != 0) 132 goto done; 133 134 ih = acpi_intr_establish(self, (uint64_t)(uintptr_t)handle, IPL_NET, 135 EQOS_INTR_MPSAFE, eqos_intr, sc, device_xname(self)); 136 if (ih == NULL) { 137 aprint_error_dev(self, "couldn't establish interrupt\n"); 138 goto done; 139 } 140 141 done: 142 acpi_resource_cleanup(&res); 143 } 144 145 static void 146 eqos_acpi_init_props(struct eqos_softc *sc, ACPI_HANDLE handle) 147 { 148 prop_dictionary_t prop = device_properties(sc->sc_dev); 149 ACPI_STATUS rv; 150 ACPI_INTEGER ival; 151 #if notyet 152 ACPI_HANDLE axi; 153 char *sval; 154 #endif 155 156 /* Defaults */ 157 prop_dictionary_set_uint(prop, "snps,wr_osr_lmt", 4); 158 prop_dictionary_set_uint(prop, "snps,rd_osr_lmt", 8); 159 160 /* Get settings from DSD properties */ 161 rv = acpi_dsd_integer(handle, "snps,mixed-burst", &ival); 162 if (ACPI_SUCCESS(rv) && ival) { 163 prop_dictionary_set_bool(prop, "snps,mixed-burst", true); 164 } 165 rv = acpi_dsd_integer(handle, "snps,tso", &ival); 166 if (ACPI_SUCCESS(rv) && ival) { 167 prop_dictionary_set_bool(prop, "snps,tso", true); 168 } 169 170 #if notyet 171 rv = acpi_dsd_string(handle, "snps,axi-config", &sval); 172 if (ACPI_SUCCESS(rv)) { 173 rv = AcpiGetHandle(handle, sval, &axi); 174 if (ACPI_SUCCESS(rv)) { 175 rv = acpi_dsd_integer(axi, "snps,wr_osr_lmt", &ival); 176 if (ACPI_SUCCESS(rv) && ival > 0) { 177 prop_dictionary_set_uint(prop, 178 "snps,wr_osr_lmt", ival); 179 } 180 rv = acpi_dsd_integer(axi, "snps,rd_osr_lmt", &ival); 181 if (ACPI_SUCCESS(rv) && ival > 0) { 182 prop_dictionary_set_uint(prop, 183 "snps,rd_osr_lmt", ival); 184 } 185 } 186 kmem_strfree(sval); 187 } 188 #endif 189 } 190
Indexes created Tue Sep 23 07:09:52 GMT 2025