ahc_eisa.c revision 71390 
1/*
2 * FreeBSD, EISA product support functions
3 *
4 *
5 * Copyright (c) 1994, 1995, 1996, 1997, 1998, 2000 Justin T. Gibbs.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice immediately at the beginning of the file, without modification,
13 *    this list of conditions, and the following disclaimer.
14 * 2. The name of the author may not be used to endorse or promote products
15 *    derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
21 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * $Id$
30 *
31 * $FreeBSD: head/sys/dev/aic7xxx/ahc_eisa.c 71390 2001-01-22 21:03:48Z gibbs $
32 */
33
34#include <dev/aic7xxx/aic7xxx_freebsd.h>
35
36#include <dev/eisa/eisaconf.h>
37
38static int
39aic7770_probe(device_t dev)
40{
41	struct	 aic7770_identity *entry;
42	struct	 resource *regs;
43	uint32_t iobase;
44	bus_space_handle_t bsh;
45	bus_space_tag_t	tag;
46	u_int	 irq;
47	u_int	 intdef;
48	u_int	 hcntrl;
49	int	 shared;
50	int	 rid;
51	int	 error;
52
53	entry = aic7770_find_device(eisa_get_id(dev));
54	if (entry == NULL)
55		return (ENXIO);
56	device_set_desc(dev, entry->name);
57
58	iobase = (eisa_get_slot(dev) * EISA_SLOT_SIZE) + AHC_EISA_SLOT_OFFSET;
59
60	eisa_add_iospace(dev, iobase, AHC_EISA_IOSIZE, RESVADDR_NONE);
61
62	rid = 0;
63	regs = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid,
64				0, ~0, 1, RF_ACTIVE);
65	if (regs == NULL) {
66		device_printf(dev, "Unable to map I/O space?!\n");
67		return ENOMEM;
68	}
69
70	tag = rman_get_bustag(regs);
71	bsh = rman_get_bushandle(regs);
72	error = 0;
73
74	/* Pause the card preseving the IRQ type */
75	hcntrl = bus_space_read_1(tag, bsh, HCNTRL) & IRQMS;
76	bus_space_write_1(tag, bsh, HCNTRL, hcntrl | PAUSE);
77	while ((bus_space_read_1(tag, bsh, HCNTRL) & PAUSE) == 0)
78		;
79
80	/* Make sure we have a valid interrupt vector */
81	intdef = bus_space_read_1(tag, bsh, INTDEF);
82	shared = (intdef & EDGE_TRIG) ? EISA_TRIGGER_EDGE : EISA_TRIGGER_LEVEL;
83	irq = intdef & VECTOR;
84	switch (irq) {
85	case 9:
86	case 10:
87	case 11:
88	case 12:
89	case 14:
90	case 15:
91		break;
92	default:
93		printf("aic7770 at slot %d: illegal irq setting %d\n",
94		       eisa_get_slot(dev), intdef);
95		error = ENXIO;
96	}
97
98	if (error == 0)
99		eisa_add_intr(dev, irq, shared);
100
101	bus_release_resource(dev, SYS_RES_IOPORT, rid, regs);
102	return (error);
103}
104
105static int
106aic7770_attach(device_t dev)
107{
108	struct	 aic7770_identity *entry;
109	struct	 ahc_softc *ahc;
110	char	*name;
111	int	 error;
112
113	entry = aic7770_find_device(eisa_get_id(dev));
114	if (entry == NULL)
115		return (ENXIO);
116
117	/*
118	 * Allocate a softc for this card and
119	 * set it up for attachment by our
120	 * common detect routine.
121	 */
122	name = malloc(strlen(device_get_nameunit(dev)) + 1, M_DEVBUF, M_NOWAIT);
123	if (name == NULL)
124		return (ENOMEM);
125	strcpy(name, device_get_nameunit(dev));
126	ahc = ahc_alloc(dev, name);
127	if (ahc == NULL)
128		return (ENOMEM);
129
130	ahc_set_unit(ahc, device_get_unit(dev));
131
132	/* Allocate a dmatag for our SCB DMA maps */
133	/* XXX Should be a child of the PCI bus dma tag */
134	error = bus_dma_tag_create(/*parent*/NULL, /*alignment*/1,
135				   /*boundary*/0,
136				   /*lowaddr*/BUS_SPACE_MAXADDR_32BIT,
137				   /*highaddr*/BUS_SPACE_MAXADDR,
138				   /*filter*/NULL, /*filterarg*/NULL,
139				   /*maxsize*/MAXBSIZE, /*nsegments*/AHC_NSEG,
140				   /*maxsegsz*/AHC_MAXTRANSFER_SIZE,
141				   /*flags*/BUS_DMA_ALLOCNOW,
142				   &ahc->parent_dmat);
143
144	if (error != 0) {
145		printf("ahc_eisa_attach: Could not allocate DMA tag "
146		       "- error %d\n", error);
147		ahc_free(ahc);
148		return (ENOMEM);
149	}
150	ahc->dev_softc = dev;
151	error = aic7770_config(ahc, entry);
152	if (error != 0) {
153		ahc_free(ahc);
154		return (error);
155	}
156
157	ahc_attach(ahc);
158	return (0);
159}
160
161int
162aic7770_map_registers(struct ahc_softc *ahc)
163{
164	struct	resource *regs;
165	int	rid;
166
167	rid = 0;
168	regs = bus_alloc_resource(ahc->dev_softc, SYS_RES_IOPORT,
169				  &rid, 0, ~0, 1, RF_ACTIVE);
170	if (regs == NULL) {
171		device_printf(ahc->dev_softc, "Unable to map I/O space?!\n");
172		return ENOMEM;
173	}
174	ahc->platform_data->regs_res_type = SYS_RES_IOPORT;
175	ahc->platform_data->regs_res_id = rid,
176	ahc->platform_data->regs = regs;
177	ahc->tag = rman_get_bustag(regs);
178	ahc->bsh = rman_get_bushandle(regs);
179	return (0);
180}
181
182int
183aic7770_map_int(struct ahc_softc *ahc)
184{
185	int zero;
186
187	zero = 0;
188	ahc->platform_data->irq =
189	    bus_alloc_resource(ahc->dev_softc, SYS_RES_IRQ, &zero,
190			       0, ~0, 1, RF_ACTIVE);
191	if (ahc->platform_data->irq == NULL)
192		return (ENOMEM);
193	ahc->platform_data->irq_res_type = SYS_RES_IRQ;
194	return (0);
195}
196
197static device_method_t ahc_eisa_methods[] = {
198	/* Device interface */
199	DEVMETHOD(device_probe,		aic7770_probe),
200	DEVMETHOD(device_attach,	aic7770_attach),
201	DEVMETHOD(device_detach,	ahc_detach),
202	{ 0, 0 }
203};
204
205static driver_t ahc_eisa_driver = {
206	"ahc",
207	ahc_eisa_methods,
208	sizeof(struct ahc_softc)
209};
210
211static devclass_t ahc_devclass;
212
213DRIVER_MODULE(ahc, eisa, ahc_eisa_driver, ahc_devclass, 0, 0);
214