aha_isa.c revision 49860 
1/*
2 * Product specific probe and attach routines for:
3 *      Adaptec 154x.
4 *
5 * Derived from code written by:
6 *
7 * Copyright (c) 1998 Justin T. Gibbs
8 * All rights reserved.
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 *    without modification, immediately at the beginning of the file.
16 * 2. The name of the author may not be used to endorse or promote products
17 *    derived from this software without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
23 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 *
31 *	$Id: aha_isa.c,v 1.8 1999/05/08 18:20:55 peter Exp $
32 */
33
34#include "pnp.h"
35
36#include <sys/param.h>
37#include <sys/systm.h>
38#include <sys/kernel.h>
39
40#include <machine/bus_pio.h>
41#include <machine/bus.h>
42
43#include <i386/isa/isa_device.h>
44#include <dev/aha/ahareg.h>
45
46#include <cam/scsi/scsi_all.h>
47
48#if NPNP > 0
49#include <i386/isa/pnp.h>
50#endif
51
52static	int aha_isa_probe(struct isa_device *dev);
53static	int aha_isa_attach(struct isa_device *dev);
54static	void aha_isa_intr(void *unit);
55
56struct isa_driver ahadriver =
57{
58    aha_isa_probe,
59    aha_isa_attach,
60    "aha"
61};
62
63/*
64 * Check if the device can be found at the port given
65 * and if so, set it up ready for further work
66 * as an argument, takes the isa_device structure from
67 * autoconf.c
68 */
69static int
70aha_isa_probe(dev)
71	struct isa_device *dev;
72{
73	/*
74	 * find unit and check we have that many defined
75	 */
76	struct	aha_softc *aha;
77	int	port_index;
78	int	max_port_index;
79
80	aha = NULL;
81
82	/*
83	 * Bound our board search if the user has
84	 * specified an exact port.
85	 */
86	aha_find_probe_range(dev->id_iobase, &port_index, &max_port_index);
87
88	if (port_index < 0)
89		return 0;
90
91	/* Attempt to find an adapter */
92	for (;port_index <= max_port_index; port_index++) {
93		config_data_t config_data;
94		u_int ioport;
95		int error;
96
97		ioport = aha_iop_from_bio(port_index);
98
99		/*
100		 * Ensure this port has not already been claimed already
101		 * by a PCI, EISA or ISA adapter.
102		 */
103		if (aha_check_probed_iop(ioport) != 0)
104			continue;
105		dev->id_iobase = ioport;
106		if (haveseen_iobase(dev, AHA_NREGS))
107			continue;
108
109		/* Allocate a softc for use during probing */
110		aha = aha_alloc(dev->id_unit, I386_BUS_SPACE_IO, ioport);
111
112		if (aha == NULL)
113			break;
114
115		/* We're going to attempt to probe it now, so mark it probed */
116		aha_mark_probed_bio(port_index);
117
118		/* See if there is really a card present */
119		if (aha_probe(aha) || aha_fetch_adapter_info(aha)) {
120			aha_free(aha);
121			continue;
122		}
123
124		/*
125		 * Determine our IRQ, and DMA settings and
126		 * export them to the configuration system.
127		 */
128		error = aha_cmd(aha, AOP_INQUIRE_CONFIG, NULL, /*parmlen*/0,
129			       (u_int8_t*)&config_data, sizeof(config_data),
130			       DEFAULT_CMD_TIMEOUT);
131		if (error != 0) {
132			printf("aha_isa_probe: Could not determine IRQ or DMA "
133			       "settings for adapter at 0x%x.  Failing probe\n",
134			       ioport);
135			aha_free(aha);
136			continue;
137		}
138
139		switch (config_data.dma_chan) {
140		case DMA_CHAN_5:
141			dev->id_drq = 5;
142			break;
143		case DMA_CHAN_6:
144			dev->id_drq = 6;
145			break;
146		case DMA_CHAN_7:
147			dev->id_drq = 7;
148			break;
149		default:
150			printf("aha_isa_probe: Invalid DMA setting "
151				"detected for adapter at 0x%x.  "
152				"Failing probe\n", ioport);
153			return (0);
154		}
155		dev->id_irq = (config_data.irq << 9);
156		dev->id_intr = aha_isa_intr;
157		aha_unit++;
158		return (AHA_NREGS);
159	}
160
161	return (0);
162}
163
164/*
165 * Attach all the sub-devices we can find
166 */
167static int
168aha_isa_attach(dev)
169	struct isa_device *dev;
170{
171	struct	aha_softc *aha;
172	bus_dma_filter_t *filter;
173	void		 *filter_arg;
174	bus_addr_t	 lowaddr;
175
176	aha = aha_softcs[dev->id_unit];
177	if (dev->id_drq != -1)
178		isa_dmacascade(dev->id_drq);
179
180	/* Allocate our parent dmatag */
181	filter = NULL;
182	filter_arg = NULL;
183	lowaddr = BUS_SPACE_MAXADDR_24BIT;
184
185	if (bus_dma_tag_create(/*parent*/NULL, /*alignemnt*/1, /*boundary*/0,
186                               lowaddr, /*highaddr*/BUS_SPACE_MAXADDR,
187                               filter, filter_arg,
188                               /*maxsize*/BUS_SPACE_MAXSIZE_24BIT,
189                               /*nsegments*/BUS_SPACE_UNRESTRICTED,
190                               /*maxsegsz*/BUS_SPACE_MAXSIZE_24BIT,
191                               /*flags*/0, &aha->parent_dmat) != 0) {
192                aha_free(aha);
193                return (-1);
194        }
195
196        if (aha_init(aha)) {
197		printf("aha init failed\n");
198                aha_free(aha);
199                return (-1);
200        }
201
202	return (aha_attach(aha));
203}
204
205/*
206 * Handle an ISA interrupt.
207 * XXX should go away as soon as ISA interrupt handlers
208 * take a (void *) arg.
209 */
210static void
211aha_isa_intr(void *unit)
212{
213	struct aha_softc* arg = aha_softcs[(int)unit];
214	aha_intr((void *)arg);
215}
216
217/*
218 * support PnP cards if we are using 'em
219 */
220
221#if NPNP > 0
222
223static char *ahapnp_probe(u_long csn, u_long vend_id);
224static void ahapnp_attach(u_long csn, u_long vend_id, char *name,
225	struct isa_device *dev);
226static u_long nahapnp = NAHA;
227
228static struct pnp_device ahapnp = {
229	"ahapnp",
230	ahapnp_probe,
231	ahapnp_attach,
232	&nahapnp,
233	&bio_imask
234};
235DATA_SET (pnpdevice_set, ahapnp);
236
237static char *
238ahapnp_probe(u_long csn, u_long vend_id)
239{
240	struct pnp_cinfo d;
241	char *s = NULL;
242
243	if (vend_id != AHA1542_PNP && vend_id != AHA1542_PNPCOMPAT)
244		return (NULL);
245
246	read_pnp_parms(&d, 0);
247	if (d.enable == 0 || d.flags & 1) {
248		printf("CSN %lu is disabled.\n", csn);
249		return (NULL);
250	}
251	s = "Adaptec 1542CP";
252
253	return (s);
254}
255
256static void
257ahapnp_attach(u_long csn, u_long vend_id, char *name, struct isa_device *dev)
258{
259	struct pnp_cinfo d;
260
261	if (dev->id_unit >= NAHATOT)
262		return;
263
264	if (read_pnp_parms(&d, 0) == 0) {
265		printf("failed to read pnp parms\n");
266		return;
267	}
268
269	write_pnp_parms(&d, 0);
270
271	enable_pnp_card();
272
273	dev->id_iobase = d.port[0];
274	dev->id_irq = (1 << d.irq[0]);
275	dev->id_intr = aha_intr;
276	dev->id_drq = d.drq[0];
277
278	if (dev->id_driver == NULL) {
279		dev->id_driver = &ahadriver;
280		dev->id_id = isa_compat_nextid();
281	}
282
283	if ((dev->id_alive = aha_isa_probe(dev)) != 0)
284		aha_isa_attach(dev);
285	else
286		printf("aha%d: probe failed\n", dev->id_unit);
287}
288#endif
289