1/*	$OpenBSD: apecs.c,v 1.23 2022/03/13 08:04:13 mpi Exp $	*/
2/*	$NetBSD: apecs.c,v 1.16 1996/12/05 01:39:34 cgd Exp $	*/
3
4/*-
5 * Copyright (c) 2000 The NetBSD Foundation, Inc.
6 * All rights reserved.
7 *
8 * This code is derived from software contributed to The NetBSD Foundation
9 * by Jason R. Thorpe.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 *    notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 *    notice, this list of conditions and the following disclaimer in the
18 *    documentation and/or other materials provided with the distribution.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 */
32
33/*
34 * Copyright (c) 1995, 1996 Carnegie-Mellon University.
35 * All rights reserved.
36 *
37 * Author: Chris G. Demetriou
38 *
39 * Permission to use, copy, modify and distribute this software and
40 * its documentation is hereby granted, provided that both the copyright
41 * notice and this permission notice appear in all copies of the
42 * software, derivative works or modified versions, and any portions
43 * thereof, and that both notices appear in supporting documentation.
44 *
45 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
46 * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
47 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
48 *
49 * Carnegie Mellon requests users of this software to return to
50 *
51 *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
52 *  School of Computer Science
53 *  Carnegie Mellon University
54 *  Pittsburgh PA 15213-3890
55 *
56 * any improvements or extensions that they make and grant Carnegie the
57 * rights to redistribute these changes.
58 */
59
60#include <sys/param.h>
61#include <sys/systm.h>
62#include <sys/kernel.h>
63#include <sys/malloc.h>
64#include <sys/device.h>
65#include <uvm/uvm_extern.h>
66
67#include <machine/autoconf.h>
68#include <machine/rpb.h>
69
70#include <dev/isa/isareg.h>
71#include <dev/isa/isavar.h>
72
73#include <dev/pci/pcireg.h>
74#include <dev/pci/pcivar.h>
75#include <alpha/pci/apecsreg.h>
76#include <alpha/pci/apecsvar.h>
77#ifdef DEC_2100_A50
78#include <alpha/pci/pci_2100_a50.h>
79#endif
80#ifdef DEC_EB64PLUS
81#include <alpha/pci/pci_eb64plus.h>
82#endif
83#ifdef DEC_1000A
84#include <alpha/pci/pci_1000a.h>
85#endif
86#ifdef DEC_1000
87#include <alpha/pci/pci_1000.h>
88#endif
89
90int	apecsmatch(struct device *, void *, void *);
91void	apecsattach(struct device *, struct device *, void *);
92
93const struct cfattach apecs_ca = {
94	sizeof(struct device), apecsmatch, apecsattach,
95};
96
97struct cfdriver apecs_cd = {
98	NULL, "apecs", DV_DULL,
99};
100
101int	apecsprint(void *, const char *pnp);
102
103/* There can be only one. */
104int apecsfound;
105struct apecs_config apecs_configuration;
106
107int
108apecsmatch(parent, match, aux)
109	struct device *parent;
110	void *match;
111	void *aux;
112{
113	struct mainbus_attach_args *ma = aux;
114
115	/* Make sure that we're looking for an APECS. */
116	if (strcmp(ma->ma_name, apecs_cd.cd_name) != 0)
117		return (0);
118
119	if (apecsfound)
120		return (0);
121
122	return (1);
123}
124
125/*
126 * Set up the chipset's function pointers.
127 */
128void
129apecs_init(acp, mallocsafe)
130	struct apecs_config *acp;
131	int mallocsafe;
132{
133	acp->ac_comanche_pass2 =
134	    (REGVAL(COMANCHE_ED) & COMANCHE_ED_PASS2) != 0;
135	acp->ac_memwidth =
136	    (REGVAL(COMANCHE_GCR) & COMANCHE_GCR_WIDEMEM) != 0 ? 128 : 64;
137	acp->ac_epic_pass2 =
138	    (REGVAL(EPIC_DCSR) & EPIC_DCSR_PASS2) != 0;
139
140	acp->ac_haxr1 = REGVAL(EPIC_HAXR1);
141	acp->ac_haxr2 = REGVAL(EPIC_HAXR2);
142
143	if (!acp->ac_initted) {
144		/* don't do these twice since they set up extents */
145		apecs_bus_io_init(&acp->ac_iot, acp);
146		apecs_bus_mem_init(&acp->ac_memt, acp);
147
148#if 0
149		/*
150		 * We have two I/O windows and 3 MEM windows.
151		 */
152		alpha_bus_window_count[ALPHA_BUS_TYPE_PCI_IO] = 2;
153		alpha_bus_window_count[ALPHA_BUS_TYPE_PCI_MEM] = 3;
154		alpha_bus_get_window = apecs_bus_get_window;
155#endif
156	}
157	acp->ac_mallocsafe = mallocsafe;
158
159	apecs_pci_init(&acp->ac_pc, acp);
160	alpha_pci_chipset = &acp->ac_pc;
161	alpha_pci_chipset->pc_name = "apecs";
162	alpha_pci_chipset->pc_mem = APECS_PCI_SPARSE;
163	alpha_pci_chipset->pc_dense = APECS_PCI_DENSE;
164	alpha_pci_chipset->pc_ports = APECS_PCI_SIO;
165	alpha_pci_chipset->pc_bwx = 0;
166	alpha_pci_chipset->pc_hae_mask = EPIC_HAXR1_EADDR;
167
168	acp->ac_initted = 1;
169}
170
171void
172apecsattach(parent, self, aux)
173	struct device *parent, *self;
174	void *aux;
175{
176	struct apecs_config *acp;
177	struct pcibus_attach_args pba;
178
179	/* note that we've attached the chipset; can't have 2 APECSes. */
180	apecsfound = 1;
181
182	/*
183	 * set up the chipset's info; done once at console init time
184	 * (maybe), but doesn't hurt to do twice.
185	 */
186	acp = &apecs_configuration;
187	apecs_init(acp, 1);
188
189	apecs_dma_init(acp);
190
191	printf(": DECchip %s Core Logic chipset\n",
192	    acp->ac_memwidth == 128 ? "21072" : "21071");
193	printf("%s: DC21071-CA pass %d, %d-bit memory bus\n",
194	    self->dv_xname, acp->ac_comanche_pass2 ? 2 : 1, acp->ac_memwidth);
195	printf("%s: DC21071-DA pass %d\n", self->dv_xname,
196	    acp->ac_epic_pass2 ? 2 : 1);
197	/* XXX print bcache size */
198
199	if (!acp->ac_epic_pass2)
200		printf("WARNING: 21071-DA NOT PASS2... NO BETS...\n");
201
202	switch (cputype) {
203#ifdef DEC_2100_A50
204	case ST_DEC_2100_A50:
205		pci_2100_a50_pickintr(acp);
206		break;
207#endif
208
209#ifdef DEC_EB64PLUS
210	case ST_EB64P:
211		pci_eb64plus_pickintr(acp);
212		break;
213#endif
214
215#ifdef DEC_1000A
216	case ST_DEC_1000A:
217		pci_1000a_pickintr(acp, &acp->ac_iot, &acp->ac_memt,
218			&acp->ac_pc);
219		break;
220#endif
221
222#ifdef DEC_1000
223	case ST_DEC_1000:
224		pci_1000_pickintr(acp, &acp->ac_iot, &acp->ac_memt,
225			&acp->ac_pc);
226		break;
227#endif
228
229	default:
230		panic("apecsattach: shouldn't be here, really...");
231	}
232
233	bzero(&pba, sizeof(pba));
234	pba.pba_busname = "pci";
235	pba.pba_iot = &acp->ac_iot;
236	pba.pba_memt = &acp->ac_memt;
237	pba.pba_dmat =
238	    alphabus_dma_get_tag(&acp->ac_dmat_direct, ALPHA_BUS_PCI);
239	pba.pba_pc = &acp->ac_pc;
240	pba.pba_domain = pci_ndomains++;
241	pba.pba_bus = 0;
242#ifdef notyet
243	pba.pba_flags = PCI_FLAGS_IO_ENABLED | PCI_FLAGS_MEM_ENABLED |
244	    PCI_FLAGS_MRL_OKAY | PCI_FLAGS_MRM_OKAY | PCI_FLAGS_MWI_OKAY;
245#endif
246	config_found(self, &pba, apecsprint);
247}
248
249int
250apecsprint(aux, pnp)
251	void *aux;
252	const char *pnp;
253{
254	register struct pcibus_attach_args *pba = aux;
255
256	/* only PCIs can attach to APECSes; easy. */
257	if (pnp)
258		printf("%s at %s", pba->pba_busname, pnp);
259	printf(" bus %d", pba->pba_bus);
260	return (UNCONF);
261}
262
263#if 0
264int
265apecs_bus_get_window(type, window, abst)
266	int type, window;
267	struct alpha_bus_space_translation *abst;
268{
269	struct apecs_config *acp = &apecs_configuration;
270	bus_space_tag_t st;
271
272	switch (type) {
273	case ALPHA_BUS_TYPE_PCI_IO:
274		st = &acp->ac_iot;
275		break;
276
277	case ALPHA_BUS_TYPE_PCI_MEM:
278		st = &acp->ac_memt;
279		break;
280
281	default:
282		panic("apecs_bus_get_window");
283	}
284
285	return (alpha_bus_space_get_window(st, window, abst));
286}
287#endif
288