1 /* $OpenBSD: mvahci.c,v 1.2 2021/10/24 17:52:27 mpi 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/types.h>
19 #include <sys/systm.h>
20 #include <sys/device.h>
21 #include <sys/mutex.h>
22
23 #include <machine/bus.h>
24 #include <machine/fdt.h>
25
26 #include <armv7/marvell/mvmbusvar.h>
27
28 #include <dev/ic/ahcireg.h>
29 #include <dev/ic/ahcivar.h>
30
31 #include <dev/ofw/openfirm.h>
32 #include <dev/ofw/ofw_clock.h>
33 #include <dev/ofw/fdt.h>
34
35 #define MVAHCI_READ(sc, reg) \
36 bus_space_read_4((sc)->sc_iot, (sc)->sc_ioh, (reg))
37 #define MVAHCI_WRITE(sc, reg, val) \
38 bus_space_write_4((sc)->sc_iot, (sc)->sc_ioh, (reg), (val))
39
40 #define MVAHCI_NWINDOW 4
41 #define MVAHCI_WINDOW_CTRL(x) (0x60 + ((x) << 4))
42 #define MVAHCI_WINDOW_BASE(x) (0x64 + ((x) << 4))
43 #define MVAHCI_WINDOW_SIZE(x) (0x68 + ((x) << 4))
44
45 #define MVAHCI_TARGET(target) (((target) & 0xf) << 4)
46 #define MVAHCI_ATTR(attr) (((attr) & 0xff) << 8)
47 #define MVAHCI_BASEADDR(base) ((base) >> 16)
48 #define MVAHCI_SIZE(size) (((size) - 1) & 0xffff0000)
49 #define MVAHCI_WINEN (1 << 0)
50
51 void mvahci_wininit(struct ahci_softc *);
52
53 int mvahci_match(struct device *, void *, void *);
54 void mvahci_attach(struct device *, struct device *, void *);
55 int mvahci_detach(struct device *, int);
56 int mvahci_activate(struct device *, int);
57
58 extern int ahci_intr(void *);
59
60 const struct cfattach mvahci_ca = {
61 sizeof(struct ahci_softc),
62 mvahci_match,
63 mvahci_attach,
64 mvahci_detach,
65 mvahci_activate
66 };
67
68 struct cfdriver mvahci_cd = {
69 NULL, "mvahci", DV_DULL
70 };
71
72 void
mvahci_wininit(struct ahci_softc * sc)73 mvahci_wininit(struct ahci_softc *sc)
74 {
75 int i;
76
77 if (mvmbus_dram_info == NULL)
78 panic("%s: mbus dram information not set up", __func__);
79
80 for (i = 0; i < MVAHCI_NWINDOW; i++) {
81 MVAHCI_WRITE(sc, MVAHCI_WINDOW_CTRL(i), 0);
82 MVAHCI_WRITE(sc, MVAHCI_WINDOW_BASE(i), 0);
83 MVAHCI_WRITE(sc, MVAHCI_WINDOW_SIZE(i), 0);
84 }
85
86 for (i = 0; i < mvmbus_dram_info->numcs; i++) {
87 struct mbus_dram_window *win = &mvmbus_dram_info->cs[i];
88
89 MVAHCI_WRITE(sc, MVAHCI_WINDOW_CTRL(i),
90 MVAHCI_WINEN |
91 MVAHCI_TARGET(mvmbus_dram_info->targetid) |
92 MVAHCI_ATTR(win->attr));
93 MVAHCI_WRITE(sc, MVAHCI_WINDOW_BASE(i),
94 MVAHCI_BASEADDR(win->base));
95 MVAHCI_WRITE(sc, MVAHCI_WINDOW_SIZE(i),
96 MVAHCI_SIZE(win->size));
97 }
98 }
99
100 int
mvahci_match(struct device * parent,void * match,void * aux)101 mvahci_match(struct device *parent, void *match, void *aux)
102 {
103 struct fdt_attach_args *faa = aux;
104
105 return OF_is_compatible(faa->fa_node, "marvell,armada-380-ahci");
106 }
107
108 void
mvahci_attach(struct device * parent,struct device * self,void * aux)109 mvahci_attach(struct device *parent, struct device *self, void *aux)
110 {
111 struct ahci_softc *sc = (struct ahci_softc *)self;
112 struct fdt_attach_args *faa = aux;
113
114 if (faa->fa_nreg < 1)
115 return;
116
117 sc->sc_iot = faa->fa_iot;
118 sc->sc_ios = faa->fa_reg[0].size;
119 sc->sc_dmat = faa->fa_dmat;
120
121 if (bus_space_map(sc->sc_iot, faa->fa_reg[0].addr,
122 faa->fa_reg[0].size, 0, &sc->sc_ioh))
123 panic("mvahci_attach: bus_space_map failed!");
124
125 clock_enable_all(faa->fa_node);
126 reset_deassert_all(faa->fa_node);
127
128 sc->sc_ih = arm_intr_establish_fdt(faa->fa_node, IPL_BIO,
129 ahci_intr, sc, sc->sc_dev.dv_xname);
130 if (sc->sc_ih == NULL) {
131 printf(": unable to establish interrupt\n");
132 goto unmap;
133 }
134
135 /* Set up MBUS windows. */
136 mvahci_wininit(sc);
137
138 printf(":");
139
140 if (ahci_attach(sc) != 0) {
141 /* error printed by ahci_attach */
142 goto irq;
143 }
144
145 return;
146 irq:
147 arm_intr_disestablish_fdt(sc->sc_ih);
148 unmap:
149 bus_space_unmap(sc->sc_iot, sc->sc_ioh, sc->sc_ios);
150 }
151
152 int
mvahci_detach(struct device * self,int flags)153 mvahci_detach(struct device *self, int flags)
154 {
155 struct ahci_softc *sc = (struct ahci_softc *)self;
156
157 ahci_detach(sc, flags);
158 bus_space_unmap(sc->sc_iot, sc->sc_ioh, sc->sc_ios);
159 return 0;
160 }
161
162 int
mvahci_activate(struct device * self,int act)163 mvahci_activate(struct device *self, int act)
164 {
165 struct ahci_softc *sc = (struct ahci_softc *)self;
166
167 return ahci_activate((struct device *)sc, act);
168 }
169