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
genet_acpi_match(device_t parent,cfdata_t cf,void * aux)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
genet_acpi_attach(device_t parent,device_t self,void * aux)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