1 /* $OpenBSD: ahci_fdt.c,v 1.8 2023/04/08 02:32:38 dlg Exp $ */
2 /*
3 * Copyright (c) 2013,2017 Patrick Wildt <patrick@blueri.se>
4 *
5 * Permission to use, copy, modify, and distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 */
17
18 #include <sys/param.h>
19 #include <sys/systm.h>
20 #include <sys/buf.h>
21 #include <sys/kernel.h>
22 #include <sys/malloc.h>
23 #include <sys/device.h>
24 #include <sys/queue.h>
25
26 #include <machine/bus.h>
27 #include <machine/fdt.h>
28
29 #include <dev/ic/ahcireg.h>
30 #include <dev/ic/ahcivar.h>
31
32 #include <dev/ofw/openfirm.h>
33 #include <dev/ofw/ofw_clock.h>
34 #include <dev/ofw/ofw_misc.h>
35 #include <dev/ofw/fdt.h>
36
37 int ahci_fdt_match(struct device *, void *, void *);
38 void ahci_fdt_attach(struct device *, struct device *, void *);
39 int ahci_fdt_detach(struct device *, int);
40 int ahci_fdt_activate(struct device *, int);
41
42 extern int ahci_intr(void *);
43
44 const struct cfattach ahci_fdt_ca = {
45 sizeof(struct ahci_softc),
46 ahci_fdt_match,
47 ahci_fdt_attach,
48 ahci_fdt_detach,
49 ahci_fdt_activate
50 };
51
52 int
ahci_fdt_match(struct device * parent,void * match,void * aux)53 ahci_fdt_match(struct device *parent, void *match, void *aux)
54 {
55 struct fdt_attach_args *faa = aux;
56
57 return OF_is_compatible(faa->fa_node, "generic-ahci") ||
58 OF_is_compatible(faa->fa_node, "cavium,octeon-7130-ahci") ||
59 OF_is_compatible(faa->fa_node, "marvell,armada-3700-ahci") ||
60 OF_is_compatible(faa->fa_node, "snps,dwc-ahci");
61 }
62
63 void
ahci_fdt_attach(struct device * parent,struct device * self,void * aux)64 ahci_fdt_attach(struct device *parent, struct device *self, void *aux)
65 {
66 struct ahci_softc *sc = (struct ahci_softc *) self;
67 struct fdt_attach_args *faa = aux;
68 uint32_t pi;
69
70 if (faa->fa_nreg < 1)
71 return;
72
73 sc->sc_iot = faa->fa_iot;
74 sc->sc_ios = faa->fa_reg[0].size;
75 sc->sc_dmat = faa->fa_dmat;
76
77 if (bus_space_map(sc->sc_iot, faa->fa_reg[0].addr,
78 faa->fa_reg[0].size, 0, &sc->sc_ioh))
79 panic("ahci_fdt_attach: bus_space_map failed!");
80
81 sc->sc_ih = fdt_intr_establish(faa->fa_node, IPL_BIO,
82 ahci_intr, sc, sc->sc_dev.dv_xname);
83 if (sc->sc_ih == NULL) {
84 printf(": can't establish interrupt\n");
85 goto unmap;
86 }
87
88 clock_set_assigned(faa->fa_node);
89 clock_enable_all(faa->fa_node);
90 phy_enable(faa->fa_node, "sata-phy");
91
92 bus_space_write_4(sc->sc_iot, sc->sc_ioh, 0x118, 1U << 22);
93 pi = OF_getpropint(faa->fa_node, "ports-implemented", 0x0);
94 if (pi != 0)
95 bus_space_write_4(sc->sc_iot, sc->sc_ioh, AHCI_REG_PI, pi);
96
97 printf(":");
98
99 if (ahci_attach(sc) != 0) {
100 /* error printed by ahci_attach */
101 goto irq; /* disable phy and clocks? */
102 }
103
104 return;
105 irq:
106 fdt_intr_disestablish(sc->sc_ih);
107 unmap:
108 bus_space_unmap(sc->sc_iot, sc->sc_ioh, sc->sc_ios);
109 }
110
111 int
ahci_fdt_detach(struct device * self,int flags)112 ahci_fdt_detach(struct device *self, int flags)
113 {
114 struct ahci_softc *sc = (struct ahci_softc *) self;
115
116 ahci_detach(sc, flags);
117 bus_space_unmap(sc->sc_iot, sc->sc_ioh, sc->sc_ios);
118 return 0;
119 }
120
121 int
ahci_fdt_activate(struct device * self,int act)122 ahci_fdt_activate(struct device *self, int act)
123 {
124 struct ahci_softc *sc = (struct ahci_softc *) self;
125
126 return ahci_activate((struct device *)sc, act);
127 }
128