1 /* $OpenBSD: octpip.c,v 1.3 2020/09/08 13:54:48 visa Exp $ */
2
3 /*
4 * Copyright (c) 2019 Visa Hankala
5 *
6 * Permission to use, copy, modify, and/or distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18
19 #include <sys/param.h>
20 #include <sys/systm.h>
21 #include <sys/device.h>
22
23 #include <dev/ofw/fdt.h>
24 #include <dev/ofw/openfirm.h>
25
26 #include <machine/fdt.h>
27
28 #include <octeon/dev/iobusvar.h>
29 #include <octeon/dev/cn30xxgmxreg.h>
30
31 struct octpip_softc {
32 struct device sc_dev;
33 };
34
35 int octpip_match(struct device *, void *, void *);
36 void octpip_attach(struct device *, struct device *, void *);
37 int octpip_print(void *, const char *);
38
39 const struct cfattach octpip_ca = {
40 sizeof(struct octpip_softc), octpip_match, octpip_attach
41 };
42
43 struct cfdriver octpip_cd = {
44 NULL, "octpip", DV_DULL
45 };
46
47 int
octpip_match(struct device * parent,void * match,void * aux)48 octpip_match(struct device *parent, void *match, void *aux)
49 {
50 struct fdt_attach_args *faa = aux;
51
52 return OF_is_compatible(faa->fa_node, "cavium,octeon-3860-pip");
53 }
54
55 void
octpip_attach(struct device * parent,struct device * self,void * aux)56 octpip_attach(struct device *parent, struct device *self, void *aux)
57 {
58 struct iobus_attach_args iaa;
59 struct fdt_attach_args *faa = aux;
60 paddr_t addr;
61 uint32_t ifindex;
62 int node;
63
64 printf("\n");
65
66 for (node = OF_child(faa->fa_node); node != 0; node = OF_peer(node)) {
67 if (!OF_is_compatible(node, "cavium,octeon-3860-pip-interface"))
68 continue;
69
70 ifindex = OF_getpropint(node, "reg", (uint32_t)-1);
71 if (ifindex < 2)
72 addr = GMX0_BASE_PORT0 + GMX_BLOCK_SIZE * ifindex;
73 else if (ifindex == 4)
74 addr = AGL_BASE;
75 else
76 continue;
77
78 memset(&iaa, 0, sizeof(iaa));
79 iaa.aa_name = "octgmx";
80 iaa.aa_bust = faa->fa_iot;
81 iaa.aa_dmat = faa->fa_dmat;
82 iaa.aa_addr = addr;
83 iaa.aa_irq = -1;
84 iaa.aa_unitno = ifindex;
85 config_found(self, &iaa, octpip_print);
86 }
87 }
88
89 int
octpip_print(void * aux,const char * parentname)90 octpip_print(void *aux, const char *parentname)
91 {
92 struct iobus_attach_args *iaa = aux;
93
94 if (parentname != NULL)
95 printf("%s at %s", iaa->aa_name, parentname);
96 printf(" interface %d", iaa->aa_unitno);
97
98 return UNCONF;
99 }
100