Annotation of sys/dev/eisa/cac_eisa.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: cac_eisa.c,v 1.2 2001/11/05 17:25:58 art Exp $ */
2: /* $NetBSD: cac_eisa.c,v 1.1 2000/09/01 12:15:20 ad 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 Andrew Doran.
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: * 3. All advertising materials mentioning features or use of this software
20: * must display the following acknowledgement:
21: * This product includes software developed by the NetBSD
22: * Foundation, Inc. and its contributors.
23: * 4. Neither the name of The NetBSD Foundation nor the names of its
24: * contributors may be used to endorse or promote products derived
25: * from this software without specific prior written permission.
26: *
27: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
28: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
29: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
30: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
31: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
32: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
33: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
34: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
35: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
36: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37: * POSSIBILITY OF SUCH DAMAGE.
38: */
39:
40: /*
41: * Copyright (c) 2000 Jonathan Lemon
42: * Copyright (c) 1999 by Matthew N. Dodd <winter@jurai.net>
43: * All Rights Reserved.
44: *
45: * Redistribution and use in source and binary forms, with or without
46: * modification, are permitted provided that the following conditions
47: * are met:
48: * 1. Redistributions of source code must retain the above copyright
49: * notice, this list of conditions, and the following disclaimer,
50: * without modification, immediately at the beginning of the file.
51: * 2. The name of the author may not be used to endorse or promote products
52: * derived from this software without specific prior written permission.
53: *
54: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
55: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
56: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
57: * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
58: * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
59: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
60: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
61: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
62: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
63: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
64: * SUCH DAMAGE.
65: */
66:
67: /*
68: * EISA front-end for cac(4) driver.
69: */
70:
71: #include <sys/types.h>
72: #include <sys/param.h>
73: #include <sys/systm.h>
74: #include <sys/device.h>
75:
76: #include <machine/bus.h>
77: #include <machine/intr.h>
78:
79: #include <dev/eisa/eisavar.h>
80: #include <dev/eisa/eisadevs.h>
81:
82: #include <scsi/scsi_all.h>
83: #include <scsi/scsi_disk.h>
84: #include <scsi/scsiconf.h>
85:
86: #include <dev/ic/cacreg.h>
87: #include <dev/ic/cacvar.h>
88:
89: #define CAC_EISA_SLOT_OFFSET 0x0c88
90: #define CAC_EISA_IOSIZE 0x0017
91: #define CAC_EISA_IOCONF 0x38
92:
93: int cac_eisa_match(struct device *, void *, void *);
94: void cac_eisa_attach(struct device *, struct device *, void *);
95:
96: struct cac_ccb *cac_eisa_l0_completed(struct cac_softc *);
97: int cac_eisa_l0_fifo_full(struct cac_softc *);
98: void cac_eisa_l0_intr_enable(struct cac_softc *, int);
99: int cac_eisa_l0_intr_pending(struct cac_softc *);
100: void cac_eisa_l0_submit(struct cac_softc *, struct cac_ccb *);
101:
102: struct cfattach cac_eisa_ca = {
103: sizeof(struct cac_softc), cac_eisa_match, cac_eisa_attach
104: };
105:
106: static const
107: struct cac_linkage cac_eisa_l0 = {
108: cac_eisa_l0_completed,
109: cac_eisa_l0_fifo_full,
110: cac_eisa_l0_intr_enable,
111: cac_eisa_l0_intr_pending,
112: cac_eisa_l0_submit
113: };
114:
115: static const
116: struct cac_eisa_type {
117: const char *ct_prodstr;
118: const char *ct_typestr;
119: const struct cac_linkage *ct_linkage;
120: } cac_eisa_type[] = {
121: { "CPQ4001", "IDA", &cac_eisa_l0 },
122: { "CPQ4002", "IDA-2", &cac_eisa_l0 },
123: { "CPQ4010", "IEAS", &cac_eisa_l0 },
124: { "CPQ4020", "SMART", &cac_eisa_l0 },
125: { "CPQ4030", "SMART-2/E", &cac_l0 },
126: };
127:
128: int
129: cac_eisa_match(parent, match, aux)
130: struct device *parent;
131: void *match, *aux;
132: {
133: struct eisa_attach_args *ea;
134: int i;
135:
136: ea = aux;
137:
138: for (i = 0; i < sizeof(cac_eisa_type) / sizeof(cac_eisa_type[0]); i++)
139: if (strcmp(ea->ea_idstring, cac_eisa_type[i].ct_prodstr) == 0)
140: return (1);
141:
142: return (0);
143: }
144:
145: void
146: cac_eisa_attach(parent, self, aux)
147: struct device *parent;
148: struct device *self;
149: void *aux;
150: {
151: struct eisa_attach_args *ea;
152: bus_space_handle_t ioh;
153: eisa_chipset_tag_t ec;
154: eisa_intr_handle_t ih;
155: struct cac_softc *sc;
156: bus_space_tag_t iot;
157: const char *intrstr;
158: int irq, i;
159:
160: ea = aux;
161: sc = (struct cac_softc *)self;
162: iot = ea->ea_iot;
163: ec = ea->ea_ec;
164:
165: if (bus_space_map(iot, EISA_SLOT_ADDR(ea->ea_slot) +
166: CAC_EISA_SLOT_OFFSET, CAC_EISA_IOSIZE, 0, &ioh)) {
167: printf(": can't map i/o space\n");
168: return;
169: }
170:
171: sc->sc_iot = iot;
172: sc->sc_ioh = ioh;
173: sc->sc_dmat = ea->ea_dmat;
174:
175: /*
176: * Map and establish the interrupt.
177: */
178: switch (bus_space_read_1(iot, ioh, CAC_EISA_IOCONF) & 0xf0) {
179: case 0x20:
180: irq = 10;
181: break;
182: case 0x10:
183: irq = 11;
184: break;
185: case 0x40:
186: irq = 14;
187: break;
188: case 0x80:
189: irq = 15;
190: break;
191: default:
192: printf(": controller on invalid IRQ\n");
193: return;
194: }
195:
196: if (eisa_intr_map(ec, irq, &ih)) {
197: printf(": can't map interrupt (%d)\n", irq);
198: return;
199: }
200:
201: intrstr = eisa_intr_string(ec, ih);
202: if ((sc->sc_ih = eisa_intr_establish(ec, ih, IST_LEVEL, IPL_BIO,
203: cac_intr, sc, sc->sc_dv.dv_xname)) == NULL) {
204: printf(": can't establish interrupt");
205: if (intrstr != NULL)
206: printf(" at %s", intrstr);
207: printf("\n");
208: return;
209: }
210:
211: /*
212: * Print board type and attach to the bus-independent code.
213: */
214: for (i = 0; i < sizeof(cac_eisa_type) / sizeof(cac_eisa_type[0]); i++)
215: if (strcmp(ea->ea_idstring, cac_eisa_type[i].ct_prodstr) == 0)
216: break;
217:
218: printf(" %s: Compaq %s\n", intrstr, cac_eisa_type[i].ct_typestr);
219: sc->sc_cl = cac_eisa_type[i].ct_linkage;
220: cac_init(sc, 0);
221: }
222:
223: /*
224: * Linkage specific to EISA boards.
225: */
226:
227: int
228: cac_eisa_l0_fifo_full(struct cac_softc *sc)
229: {
230:
231: return ((cac_inb(sc, CAC_EISAREG_SYSTEM_DOORBELL) &
232: CAC_EISA_CHANNEL_CLEAR) == 0);
233: }
234:
235: void
236: cac_eisa_l0_submit(struct cac_softc *sc, struct cac_ccb *ccb)
237: {
238: u_int16_t size;
239:
240: /*
241: * On these boards, `ccb_hdr.size' is actually for control flags.
242: * Set it to zero and pass the value by means of an I/O port.
243: */
244: size = letoh16(ccb->ccb_hdr.size) << 2;
245: ccb->ccb_hdr.size = 0;
246:
247: bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap, (caddr_t)ccb - sc->sc_ccbs,
248: sizeof(struct cac_ccb), BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
249:
250: cac_outb(sc, CAC_EISAREG_SYSTEM_DOORBELL, CAC_EISA_CHANNEL_CLEAR);
251: cac_outl(sc, CAC_EISAREG_LIST_ADDR, ccb->ccb_paddr);
252: cac_outw(sc, CAC_EISAREG_LIST_LEN, size);
253: cac_outb(sc, CAC_EISAREG_LOCAL_DOORBELL, CAC_EISA_CHANNEL_BUSY);
254: }
255:
256: struct cac_ccb *
257: cac_eisa_l0_completed(struct cac_softc *sc)
258: {
259: struct cac_ccb *ccb;
260: u_int32_t off;
261: u_int8_t status;
262:
263: if ((cac_inb(sc, CAC_EISAREG_SYSTEM_DOORBELL) &
264: CAC_EISA_CHANNEL_BUSY) == 0)
265: return (NULL);
266:
267: cac_outb(sc, CAC_EISAREG_SYSTEM_DOORBELL, CAC_EISA_CHANNEL_BUSY);
268: off = cac_inl(sc, CAC_EISAREG_COMPLETE_ADDR);
269: status = cac_inb(sc, CAC_EISAREG_LIST_STATUS);
270: cac_outb(sc, CAC_EISAREG_LOCAL_DOORBELL, CAC_EISA_CHANNEL_CLEAR);
271:
272: if (off == 0)
273: return (NULL);
274:
275: off = (off & ~3) - sc->sc_ccbs_paddr;
276: ccb = (struct cac_ccb *)(sc->sc_ccbs + off);
277:
278: bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap, off, sizeof(struct cac_ccb),
279: BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD);
280:
281: ccb->ccb_req.error = status;
282: return (ccb);
283: }
284:
285: int
286: cac_eisa_l0_intr_pending(struct cac_softc *sc)
287: {
288:
289: return (cac_inb(sc, CAC_EISAREG_SYSTEM_DOORBELL) &
290: CAC_EISA_CHANNEL_BUSY);
291: }
292:
293: void
294: cac_eisa_l0_intr_enable(struct cac_softc *sc, int state)
295: {
296:
297: if (state) {
298: cac_outb(sc, CAC_EISAREG_SYSTEM_DOORBELL,
299: ~CAC_EISA_CHANNEL_CLEAR);
300: cac_outb(sc, CAC_EISAREG_LOCAL_DOORBELL,
301: CAC_EISA_CHANNEL_BUSY);
302: cac_outb(sc, CAC_EISAREG_INTR_MASK, CAC_INTR_ENABLE);
303: cac_outb(sc, CAC_EISAREG_SYSTEM_MASK, CAC_INTR_ENABLE);
304: } else
305: cac_outb(sc, CAC_EISAREG_SYSTEM_MASK, CAC_INTR_DISABLE);
306: }
CVSweb
![[BACK]](/icons/back.gif){kind=icon}
Return to cac_eisa.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / sys / dev / eisa