1/*	$NetBSD: hdlg_pci.c,v 1.5 2018/11/16 15:06:23 jmcneill Exp $	*/
2
3/*
4 * Copyright (c) 2001, 2002 Wasabi Systems, Inc.
5 * All rights reserved.
6 *
7 * Written by Jason R. Thorpe for Wasabi Systems, Inc.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 * 3. All advertising materials mentioning features or use of this software
18 *    must display the following acknowledgement:
19 *	This product includes software developed for the NetBSD Project by
20 *	Wasabi Systems, Inc.
21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse
22 *    or promote products derived from this software without specific prior
23 *    written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
28 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
35 * POSSIBILITY OF SUCH DAMAGE.
36 */
37
38#include <sys/cdefs.h>
39__KERNEL_RCSID(0, "$NetBSD: hdlg_pci.c,v 1.5 2018/11/16 15:06:23 jmcneill Exp $");
40
41#include <sys/param.h>
42#include <sys/systm.h>
43#include <sys/device.h>
44
45#include <machine/autoconf.h>
46#include <sys/bus.h>
47
48#include <evbarm/hdl_g/hdlgreg.h>
49#include <evbarm/hdl_g/hdlgvar.h>
50
51#include <arm/xscale/i80321reg.h>
52#include <arm/xscale/i80321var.h>
53
54#include <dev/pci/pcidevs.h>
55#include <dev/pci/ppbreg.h>
56
57int	hdlg_pci_intr_map(const struct pci_attach_args *, pci_intr_handle_t *);
58const char *hdlg_pci_intr_string(void *, pci_intr_handle_t, char *, size_t);
59const struct evcnt *hdlg_pci_intr_evcnt(void *, pci_intr_handle_t);
60void	*hdlg_pci_intr_establish(void *, pci_intr_handle_t,
61	    int, int (*func)(void *), void *, const char *);
62void	hdlg_pci_intr_disestablish(void *, void *);
63
64void
65hdlg_pci_init(pci_chipset_tag_t pc, void *cookie)
66{
67
68	pc->pc_intr_v = cookie;		/* the i80321 softc */
69	pc->pc_intr_map = hdlg_pci_intr_map;
70	pc->pc_intr_string = hdlg_pci_intr_string;
71	pc->pc_intr_evcnt = hdlg_pci_intr_evcnt;
72	pc->pc_intr_establish = hdlg_pci_intr_establish;
73	pc->pc_intr_disestablish = hdlg_pci_intr_disestablish;
74}
75
76int
77hdlg_pci_intr_map(const struct pci_attach_args *pa, pci_intr_handle_t *ihp)
78{
79	struct i80321_softc *sc = pa->pa_pc->pc_intr_v;
80	uint32_t busno;
81	int b, d, f;
82
83	/*
84	 * GigaLANDISK's interrupts are routed like so:
85	 *
86	 *	XINT0	Intel i82541PI Gig-E
87	 *
88	 *	XINT1	ACARD ATP875-A
89	 *
90	 *	XINT2	NEC echi/ochi
91	 *
92	 *	XINT3	UART
93	 */
94
95	busno = bus_space_read_4(sc->sc_st, sc->sc_atu_sh, ATU_PCIXSR);
96	busno = PCIXSR_BUSNO(busno);
97	if (busno == 0xff)
98		busno = 0;
99
100	pci_decompose_tag(pa->pa_pc, pa->pa_intrtag, &b, &d, &f);
101
102	/* No mappings for devices not on our bus. */
103	if (b != busno)
104		goto no_mapping;
105
106	switch (d) {
107	case 1:			/* i82541PI Gig-E */
108		if (pa->pa_intrpin == 1) {
109			*ihp = ICU_INT_XINT(0);
110			return 0;
111		}
112		goto no_mapping;
113
114	case 2:			/* ATP875-A */
115		if (pa->pa_intrpin == 1) {
116			*ihp = ICU_INT_XINT(1);
117			return 0;
118		}
119		goto no_mapping;
120
121	case 3:			/* echi/ochi */
122		switch (pa->pa_intrpin) {
123		case 1:	/* ohci */
124		case 2:	/* ohci */
125		case 3:	/* ehci */
126			*ihp = ICU_INT_XINT(2);
127			return 0;
128		}
129		goto no_mapping;
130
131	default:
132 no_mapping:
133		printf("hdlg_pci_intr_map: no mapping for %d/%d/%d\n",
134		    pa->pa_bus, pa->pa_device, pa->pa_function);
135		return 1;
136	}
137
138	return 0;
139}
140
141const char *
142hdlg_pci_intr_string(void *v, pci_intr_handle_t ih, char *buf, size_t len)
143{
144
145	strlcpy(buf, i80321_irqnames[ih], len);
146	return buf;
147}
148
149const struct evcnt *
150hdlg_pci_intr_evcnt(void *v, pci_intr_handle_t ih)
151{
152
153	/* XXX For now. */
154	return NULL;
155}
156
157void *
158hdlg_pci_intr_establish(void *v, pci_intr_handle_t ih, int ipl,
159    int (*func)(void *), void *arg, const char *xname)
160{
161
162	return i80321_intr_establish(ih, ipl, func, arg);
163}
164
165void
166hdlg_pci_intr_disestablish(void *v, void *cookie)
167{
168
169	i80321_intr_disestablish(cookie);
170}
171