1 /* $NetBSD: amdccp_fdt.c,v 1.7 2022/12/18 15:50:32 reinoud Exp $ */
2
3 /*
4 * Copyright (c) 2018 Jonathan A. Kollasch
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 COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
20 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
21 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
22 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
23 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
24 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
25 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
26 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29 #include <sys/cdefs.h>
30
31 __KERNEL_RCSID(0, "$NetBSD: amdccp_fdt.c,v 1.7 2022/12/18 15:50:32 reinoud Exp $");
32
33 #include <sys/param.h>
34 #include <sys/systm.h>
35 #include <sys/device.h>
36 #include <sys/bus.h>
37
38 #include <dev/fdt/fdtvar.h>
39
40 #include <dev/ic/amdccpvar.h>
41
42 struct amdccp_fdt_softc {
43 struct amdccp_softc sc_sc;
44 };
45
46 static int amdccp_fdt_match(device_t, cfdata_t, void *);
47 static void amdccp_fdt_attach(device_t, device_t, void *);
48
49 CFATTACH_DECL_NEW(amdccp_fdt, sizeof(struct amdccp_fdt_softc),
50 amdccp_fdt_match, amdccp_fdt_attach, NULL, NULL);
51
52 static const struct device_compatible_entry compat_data[] = {
53 { .compat = "amd,ccp-seattle-v1a" },
54 DEVICE_COMPAT_EOL
55 };
56
57 static int
amdccp_fdt_match(device_t parent,cfdata_t cf,void * aux)58 amdccp_fdt_match(device_t parent, cfdata_t cf, void *aux)
59 {
60 const struct fdt_attach_args * const faa = aux;
61
62 return of_compatible_match(faa->faa_phandle, compat_data);
63 }
64
65 static void
amdccp_fdt_attach(device_t parent,device_t self,void * aux)66 amdccp_fdt_attach(device_t parent, device_t self, void *aux)
67 {
68 struct amdccp_fdt_softc * const fsc = device_private(self);
69 struct amdccp_softc * const sc = &fsc->sc_sc;
70 const struct fdt_attach_args * const faa = aux;
71 const int phandle = faa->faa_phandle;
72 bus_addr_t addr;
73 bus_size_t size;
74
75 fsc->sc_sc.sc_dev = self;
76
77 if (fdtbus_get_reg(phandle, 0, &addr, &size) != 0) {
78 aprint_error(": couldn't get registers\n");
79 return;
80 }
81
82 sc->sc_bst = faa->faa_bst;
83 if (bus_space_map(sc->sc_bst, addr, size, 0, &sc->sc_bsh) != 0) {
84 aprint_error(": couldn't map registers\n");
85 return;
86 }
87
88 aprint_naive("\n");
89 aprint_normal(": AMD CCP\n");
90
91 amdccp_common_attach(sc);
92 pmf_device_register(self, NULL, NULL);
93 }
94