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
51void	mvahci_wininit(struct ahci_softc *);
52
53int	mvahci_match(struct device *, void *, void *);
54void	mvahci_attach(struct device *, struct device *, void *);
55int	mvahci_detach(struct device *, int);
56int	mvahci_activate(struct device *, int);
57
58extern int ahci_intr(void *);
59
60const struct cfattach mvahci_ca = {
61	sizeof(struct ahci_softc),
62	mvahci_match,
63	mvahci_attach,
64	mvahci_detach,
65	mvahci_activate
66};
67
68struct cfdriver mvahci_cd = {
69	NULL, "mvahci", DV_DULL
70};
71
72void
73mvahci_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
100int
101mvahci_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
108void
109mvahci_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;
146irq:
147	arm_intr_disestablish_fdt(sc->sc_ih);
148unmap:
149	bus_space_unmap(sc->sc_iot, sc->sc_ioh, sc->sc_ios);
150}
151
152int
153mvahci_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
162int
163mvahci_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