1 /* $NetBSD: cac_eisa.c,v 1.26 2021/01/27 04:35:15 thorpej Exp $ */
2
3 /*-
4 * Copyright (c) 2000 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Andrew Doran.
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 /*
33 * Copyright (c) 2000 Jonathan Lemon
34 * Copyright (c) 1999 by Matthew N. Dodd <winter@jurai.net>
35 * All Rights Reserved.
36 *
37 * Redistribution and use in source and binary forms, with or without
38 * modification, are permitted provided that the following conditions
39 * are met:
40 * 1. Redistributions of source code must retain the above copyright
41 * notice, this list of conditions, and the following disclaimer,
42 * without modification, immediately at the beginning of the file.
43 * 2. The name of the author may not be used to endorse or promote products
44 * derived from this software without specific prior written permission.
45 *
46 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
47 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
48 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
49 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
50 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
51 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
52 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
53 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
54 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
55 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
56 * SUCH DAMAGE.
57 */
58
59 /*
60 * EISA front-end for cac(4) driver.
61 */
62
63 #include <sys/cdefs.h>
64 __KERNEL_RCSID(0, "$NetBSD: cac_eisa.c,v 1.26 2021/01/27 04:35:15 thorpej Exp $");
65
66 #include <sys/param.h>
67 #include <sys/systm.h>
68 #include <sys/device.h>
69 #include <sys/module.h>
70 #include <sys/bus.h>
71 #include <sys/intr.h>
72
73 #include <dev/eisa/eisavar.h>
74 #include <dev/eisa/eisadevs.h>
75
76 #include <dev/ic/cacreg.h>
77 #include <dev/ic/cacvar.h>
78
79 #include "ioconf.h"
80
81 #define CAC_EISA_SLOT_OFFSET 0x0c88
82 #define CAC_EISA_IOSIZE 0x0017
83 #define CAC_EISA_IOCONF 0x38
84
85 static void cac_eisa_attach(device_t, device_t, void *);
86 static int cac_eisa_match(device_t, cfdata_t, void *);
87
88 static struct cac_ccb *cac_eisa_l0_completed(struct cac_softc *);
89 static int cac_eisa_l0_fifo_full(struct cac_softc *);
90 static void cac_eisa_l0_intr_enable(struct cac_softc *, int);
91 static int cac_eisa_l0_intr_pending(struct cac_softc *);
92 static void cac_eisa_l0_submit(struct cac_softc *, struct cac_ccb *);
93
94 CFATTACH_DECL3_NEW(cac_eisa, sizeof(struct cac_softc),
95 cac_eisa_match, cac_eisa_attach, NULL, NULL, cac_rescan, NULL, 0);
96
97 static const struct cac_linkage cac_eisa_l0 = {
98 cac_eisa_l0_completed,
99 cac_eisa_l0_fifo_full,
100 cac_eisa_l0_intr_enable,
101 cac_eisa_l0_intr_pending,
102 cac_eisa_l0_submit
103 };
104
105 struct cac_eisa_type {
106 const char *ct_typestr;
107 const struct cac_linkage *ct_linkage;
108 };
109
110 static const struct cac_eisa_type cpq4001 = {
111 .ct_typestr = "IDA",
112 .ct_linkage = &cac_eisa_l0
113 };
114
115 static const struct cac_eisa_type cpq4002 = {
116 .ct_typestr = "IDA-2",
117 .ct_linkage = &cac_eisa_l0
118 };
119
120 static const struct cac_eisa_type cpq4010 = {
121 .ct_typestr = "IEAS",
122 .ct_linkage = &cac_eisa_l0
123 };
124
125 static const struct cac_eisa_type cpq4020 = {
126 .ct_typestr = "SMART",
127 .ct_linkage = &cac_eisa_l0
128 };
129
130 static const struct cac_eisa_type cpq4030 = {
131 .ct_typestr = "SMART-2/E",
132 .ct_linkage = &cac_l0
133 };
134
135 static const struct device_compatible_entry compat_data[] = {
136 { .compat = "CPQ4001", .data = &cpq4001 },
137 { .compat = "CPQ4002", .data = &cpq4002 },
138 { .compat = "CPQ4010", .data = &cpq4010 },
139 { .compat = "CPQ4020", .data = &cpq4020 },
140 { .compat = "CPQ4030", .data = &cpq4030 },
141 DEVICE_COMPAT_EOL
142 };
143
144 static int
cac_eisa_match(device_t parent,cfdata_t match,void * aux)145 cac_eisa_match(device_t parent, cfdata_t match, void *aux)
146 {
147 struct eisa_attach_args *ea = aux;
148
149 return (eisa_compatible_match(ea, compat_data));
150 }
151
152 static void
cac_eisa_attach(device_t parent,device_t self,void * aux)153 cac_eisa_attach(device_t parent, device_t self, void *aux)
154 {
155 struct eisa_attach_args *ea = aux;
156 const struct device_compatible_entry *dce;
157 const struct cac_eisa_type *ct;
158 bus_space_handle_t ioh;
159 eisa_chipset_tag_t ec;
160 eisa_intr_handle_t ih;
161 struct cac_softc *sc;
162 bus_space_tag_t iot;
163 const char *intrstr;
164 int irq;
165 char intrbuf[EISA_INTRSTR_LEN];
166
167 sc = device_private(self);
168 iot = ea->ea_iot;
169 ec = ea->ea_ec;
170
171 if (bus_space_map(iot, EISA_SLOT_ADDR(ea->ea_slot) +
172 CAC_EISA_SLOT_OFFSET, CAC_EISA_IOSIZE, 0, &ioh)) {
173 aprint_error(": can't map i/o space\n");
174 return;
175 }
176
177 dce = eisa_compatible_lookup(ea, compat_data);
178 KASSERT(dce != NULL);
179 ct = dce->data;
180
181 sc->sc_dev = self;
182 sc->sc_iot = iot;
183 sc->sc_ioh = ioh;
184 sc->sc_dmat = ea->ea_dmat;
185
186 /*
187 * Map and establish the interrupt.
188 */
189 switch (bus_space_read_1(iot, ioh, CAC_EISA_IOCONF) & 0xf0) {
190 case 0x20:
191 irq = 10;
192 break;
193 case 0x10:
194 irq = 11;
195 break;
196 case 0x40:
197 irq = 14;
198 break;
199 case 0x80:
200 irq = 15;
201 break;
202 default:
203 aprint_error(": controller on invalid IRQ\n");
204 return;
205 }
206
207 if (eisa_intr_map(ec, irq, &ih)) {
208 aprint_error(": can't map interrupt (%d)\n", irq);
209 return;
210 }
211
212 intrstr = eisa_intr_string(ec, ih, intrbuf, sizeof(intrbuf));
213 if ((sc->sc_ih = eisa_intr_establish(ec, ih, IST_LEVEL, IPL_BIO,
214 cac_intr, sc)) == NULL) {
215 aprint_error(": can't establish interrupt");
216 if (intrstr != NULL)
217 aprint_normal(" at %s", intrstr);
218 aprint_normal("\n");
219 return;
220 }
221
222 /*
223 * Print board type and attach to the bus-independent code.
224 */
225 aprint_normal(": Compaq %s\n", ct->ct_typestr);
226 memcpy(&sc->sc_cl, ct->ct_linkage, sizeof(sc->sc_cl));
227 cac_init(sc, intrstr, 0);
228 }
229
230 /*
231 * Linkage specific to EISA boards.
232 */
233
234 static int
cac_eisa_l0_fifo_full(struct cac_softc * sc)235 cac_eisa_l0_fifo_full(struct cac_softc *sc)
236 {
237
238 return ((cac_inb(sc, CAC_EISAREG_SYSTEM_DOORBELL) &
239 CAC_EISA_CHANNEL_CLEAR) == 0);
240 }
241
242 static void
cac_eisa_l0_submit(struct cac_softc * sc,struct cac_ccb * ccb)243 cac_eisa_l0_submit(struct cac_softc *sc, struct cac_ccb *ccb)
244 {
245 u_int16_t size;
246
247 /*
248 * On these boards, `ccb_hdr.size' is actually for control flags.
249 * Set it to zero and pass the value by means of an I/O port.
250 */
251 size = le16toh(ccb->ccb_hdr.size) << 2;
252 ccb->ccb_hdr.size = 0;
253
254 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap,
255 (char *)ccb - (char *)sc->sc_ccbs,
256 sizeof(struct cac_ccb), BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
257
258 cac_outb(sc, CAC_EISAREG_SYSTEM_DOORBELL, CAC_EISA_CHANNEL_CLEAR);
259 cac_outl(sc, CAC_EISAREG_LIST_ADDR, ccb->ccb_paddr);
260 cac_outw(sc, CAC_EISAREG_LIST_LEN, size);
261 cac_outb(sc, CAC_EISAREG_LOCAL_DOORBELL, CAC_EISA_CHANNEL_BUSY);
262 }
263
264 static struct cac_ccb *
cac_eisa_l0_completed(struct cac_softc * sc)265 cac_eisa_l0_completed(struct cac_softc *sc)
266 {
267 struct cac_ccb *ccb;
268 u_int32_t off;
269 u_int8_t status;
270
271 if ((cac_inb(sc, CAC_EISAREG_SYSTEM_DOORBELL) &
272 CAC_EISA_CHANNEL_BUSY) == 0)
273 return (NULL);
274
275 cac_outb(sc, CAC_EISAREG_SYSTEM_DOORBELL, CAC_EISA_CHANNEL_BUSY);
276 off = cac_inl(sc, CAC_EISAREG_COMPLETE_ADDR);
277 status = cac_inb(sc, CAC_EISAREG_LIST_STATUS);
278 cac_outb(sc, CAC_EISAREG_LOCAL_DOORBELL, CAC_EISA_CHANNEL_CLEAR);
279
280 if (off == 0)
281 return (NULL);
282
283 off = (off & ~3) - sc->sc_ccbs_paddr;
284 ccb = (struct cac_ccb *)((char *)sc->sc_ccbs + off);
285
286 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap, off, sizeof(struct cac_ccb),
287 BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD);
288
289 ccb->ccb_req.error = status;
290
291 if ((off & 3) != 0 && ccb->ccb_req.error == 0)
292 ccb->ccb_req.error = CAC_RET_CMD_REJECTED;
293
294 return (ccb);
295 }
296
297 static int
cac_eisa_l0_intr_pending(struct cac_softc * sc)298 cac_eisa_l0_intr_pending(struct cac_softc *sc)
299 {
300
301 return (cac_inb(sc, CAC_EISAREG_SYSTEM_DOORBELL) &
302 CAC_EISA_CHANNEL_BUSY);
303 }
304
305 static void
cac_eisa_l0_intr_enable(struct cac_softc * sc,int state)306 cac_eisa_l0_intr_enable(struct cac_softc *sc, int state)
307 {
308
309 if (state) {
310 cac_outb(sc, CAC_EISAREG_SYSTEM_DOORBELL,
311 ~CAC_EISA_CHANNEL_CLEAR);
312 cac_outb(sc, CAC_EISAREG_LOCAL_DOORBELL,
313 CAC_EISA_CHANNEL_BUSY);
314 cac_outb(sc, CAC_EISAREG_INTR_MASK, CAC_INTR_ENABLE);
315 cac_outb(sc, CAC_EISAREG_SYSTEM_MASK, CAC_INTR_ENABLE);
316 } else
317 cac_outb(sc, CAC_EISAREG_SYSTEM_MASK, CAC_INTR_DISABLE);
318 }
319
320 MODULE(MODULE_CLASS_DRIVER, cac_eisa, "cac"); /* No eisa module yet! */
321
322 #ifdef _MODULE
323 /*
324 * XXX Don't allow ioconf.c to redefine the "struct cfdriver cac_cd"
325 * XXX it will be defined in the common-code module
326 */
327 #undef CFDRIVER_DECL
328 #define CFDRIVER_DECL(name, class, attr)
329 #include "ioconf.c"
330 #endif
331
332 static int
cac_eisa_modcmd(modcmd_t cmd,void * opaque)333 cac_eisa_modcmd(modcmd_t cmd, void *opaque)
334 {
335 int error = 0;
336
337 #ifdef _MODULE
338 switch (cmd) {
339 case MODULE_CMD_INIT:
340 /*
341 * We skip over the first entry in cfdriver[] array
342 * since the cfdriver is attached by the common
343 * (non-attachment-specific) code.
344 */
345 error = config_init_component(&cfdriver_ioconf_cac_eisa[1],
346 cfattach_ioconf_cac_eisa, cfdata_ioconf_cac_eisa);
347 break;
348 case MODULE_CMD_FINI:
349 error = config_fini_component(&cfdriver_ioconf_cac_eisa[1],
350 cfattach_ioconf_cac_eisa, cfdata_ioconf_cac_eisa);
351 break;
352 default:
353 error = ENOTTY;
354 break;
355 }
356 #endif
357
358 return error;
359 }
360