1/* $NetBSD: pckbc_sableio.c,v 1.15 2021/05/07 16:58:34 thorpej Exp $ */
2
3/*-
4 * Copyright (c) 1999 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Jason R. Thorpe.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#include <sys/cdefs.h>			/* RCS ID & Copyright macro defns */
33
34__KERNEL_RCSID(0, "$NetBSD: pckbc_sableio.c,v 1.15 2021/05/07 16:58:34 thorpej Exp $");
35
36#include <sys/param.h>
37#include <sys/systm.h>
38#include <sys/kernel.h>
39#include <sys/proc.h>
40#include <sys/device.h>
41#include <sys/kmem.h>
42#include <sys/errno.h>
43#include <sys/queue.h>
44#include <sys/intr.h>
45#include <sys/bus.h>
46
47#include <dev/ic/i8042reg.h>
48#include <dev/ic/pckbcvar.h>
49
50#include <dev/pci/pcivar.h>
51#include <dev/isa/isavar.h>
52
53#include <alpha/sableio/sableiovar.h>
54
55struct pckbc_sableio_softc {
56	struct	pckbc_softc sc_pckbc;	/* real "pckbc" softc */
57
58	/* STDIO-specific goo. */
59	void	*sc_ih[PCKBC_NSLOTS];	/* interrupt handlers */
60	int	sc_irq[PCKBC_NSLOTS];	/* Sable IRQs to use */
61	pci_chipset_tag_t sc_pc;	/* PCI chipset for registering intrs */
62};
63
64static int	pckbc_sableio_match(device_t, cfdata_t, void *);
65static void	pckbc_sableio_attach(device_t, device_t, void *);
66
67CFATTACH_DECL_NEW(pckbc_sableio, sizeof(struct pckbc_sableio_softc),
68    pckbc_sableio_match, pckbc_sableio_attach, NULL, NULL);
69
70static void	pckbc_sableio_intr_establish(struct pckbc_softc *,
71		    pckbc_slot_t);
72
73static int
74pckbc_sableio_match(device_t parent, cfdata_t match, void *aux)
75{
76	struct sableio_attach_args *sa = aux;
77
78	/* Always present. */
79	if (strcmp(sa->sa_name, match->cf_name) == 0)
80		return (1);
81
82	return (0);
83}
84
85static void
86pckbc_sableio_attach(device_t parent, device_t self, void *aux)
87{
88	struct pckbc_sableio_softc *ssc = device_private(self);
89	struct pckbc_softc *sc = &ssc->sc_pckbc;
90	struct sableio_attach_args *sa = aux;
91	struct pckbc_internal *t;
92	bus_space_handle_t ioh_d, ioh_c;
93
94	sc->sc_dv = self;
95	ssc->sc_pc = sa->sa_pc;
96
97	/*
98	 * Set up IRQs.
99	 */
100	ssc->sc_irq[PCKBC_KBD_SLOT] = sa->sa_sableirq[0];
101	ssc->sc_irq[PCKBC_AUX_SLOT] = sa->sa_sableirq[1];
102
103	sc->intr_establish = pckbc_sableio_intr_establish;
104
105	if (pckbc_is_console(sa->sa_iot, sa->sa_ioaddr)) {
106		t = &pckbc_consdata;
107		pckbc_console_attached = 1;
108		/* t->t_cmdbyte was initialized by cnattach */
109	} else {
110		if (bus_space_map(sa->sa_iot, sa->sa_ioaddr + KBDATAP,
111				  1, 0, &ioh_d) != 0 ||
112		    bus_space_map(sa->sa_iot, sa->sa_ioaddr + KBCMDP,
113				  1, 0, &ioh_c) != 0)
114			panic("pckbc_sableio_attach: couldn't map");
115
116		t = kmem_zalloc(sizeof(struct pckbc_internal), KM_SLEEP);
117		t->t_iot = sa->sa_iot;
118		t->t_ioh_d = ioh_d;
119		t->t_ioh_c = ioh_c;
120		t->t_addr = sa->sa_ioaddr;
121		t->t_cmdbyte = KC8_CPU; /* Enable ports */
122	}
123
124	t->t_sc = sc;
125	sc->id = t;
126
127	aprint_normal("\n");
128
129	/* Finish off the attach. */
130	pckbc_attach(sc);
131}
132
133static void
134pckbc_sableio_intr_establish(struct pckbc_softc *sc, pckbc_slot_t slot)
135{
136	struct pckbc_sableio_softc *ssc = (void *) sc;
137	const char *intrstr;
138	char buf[PCI_INTRSTR_LEN];
139	pci_intr_handle_t ih;
140
141	alpha_pci_intr_handle_init(&ih, ssc->sc_irq[slot], 0);
142
143	intrstr = pci_intr_string(ssc->sc_pc, ih, buf,
144	    sizeof(buf));
145	ssc->sc_ih[slot] = pci_intr_establish(ssc->sc_pc, ih,
146	    IPL_TTY, pckbcintr, sc);
147	if (ssc->sc_ih[slot] == NULL) {
148		aprint_error_dev(sc->sc_dv,
149		    "unable to establish interrupt for %s slot",
150		    pckbc_slot_names[slot]);
151		if (intrstr != NULL)
152			aprint_error(" at %s", intrstr);
153		aprint_error("\n");
154		return;
155	}
156	aprint_normal_dev(sc->sc_dv, "%s slot interrupting at %s\n",
157	    pckbc_slot_names[slot], intrstr);
158}
159