adv_eisa.c revision 104707 
1/*
2 * Device probe and attach routines for the following
3 * Advanced Systems Inc. SCSI controllers:
4 *
5 *   Single Channel Products:
6 *	ABP742 - Bus-Master EISA (240 CDB)
7 *
8 *   Dual Channel Products:
9 *	ABP752 - Dual Channel Bus-Master EISA (240 CDB Per Channel)
10 *
11 * Copyright (c) 1997 Justin Gibbs.
12 * All rights reserved.
13 *
14 * Redistribution and use in source and binary forms, with or without
15 * modification, are permitted provided that the following conditions
16 * are met:
17 * 1. Redistributions of source code must retain the above copyright
18 *    notice, this list of conditions, and the following disclaimer,
19 *    without modification, immediately at the beginning of the file.
20 * 2. The name of the author may not be used to endorse or promote products
21 *    derived from this software without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
27 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 *
35 * $FreeBSD: head/sys/dev/advansys/adv_eisa.c 104707 2002-10-09 08:50:26Z peter $
36 */
37
38#include <sys/param.h>
39#include <sys/systm.h>
40#include <sys/kernel.h>
41#include <sys/module.h>
42#include <sys/bus.h>
43
44#include <machine/bus_pio.h>
45#include <machine/bus.h>
46#include <machine/resource.h>
47#include <sys/rman.h>
48
49#include <dev/eisa/eisaconf.h>
50
51#include <dev/advansys/advansys.h>
52
53#define EISA_DEVICE_ID_ADVANSYS_740	0x04507400
54#define EISA_DEVICE_ID_ADVANSYS_750	0x04507500
55
56#define ADV_EISA_SLOT_OFFSET		0xc00
57#define ADV_EISA_OFFSET_CHAN1		0x30
58#define ADV_EISA_OFFSET_CHAN2		0x50
59#define ADV_EISA_IOSIZE			0x100
60
61#define ADV_EISA_ROM_BIOS_ADDR_REG	0x86
62#define ADV_EISA_IRQ_BURST_LEN_REG	0x87
63#define 	ADV_EISA_IRQ_MASK	0x07
64#define 	ADV_EISA_IRQ_10		0x00
65#define 	ADV_EISA_IRQ_11		0x01
66#define 	ADV_EISA_IRQ_12		0x02
67#define 	ADV_EISA_IRQ_14		0x04
68#define 	ADV_EISA_IRQ_15		0x05
69
70#define	ADV_EISA_MAX_DMA_ADDR   (0x07FFFFFFL)
71#define	ADV_EISA_MAX_DMA_COUNT  (0x07FFFFFFL)
72
73/*
74 * The overrun buffer shared amongst all EISA adapters.
75 */
76static	u_int8_t*	overrun_buf;
77static	bus_dma_tag_t	overrun_dmat;
78static	bus_dmamap_t	overrun_dmamap;
79static	bus_addr_t	overrun_physbase;
80
81static const char*
82adv_eisa_match(eisa_id_t type)
83{
84	switch (type & ~0xF) {
85	case EISA_DEVICE_ID_ADVANSYS_740:
86		return ("AdvanSys ABP-740/742 SCSI adapter");
87		break;
88	case EISA_DEVICE_ID_ADVANSYS_750:
89		return ("AdvanSys ABP-750/752 SCSI adapter");
90		break;
91	default:
92		break;
93	}
94	return (NULL);
95}
96
97static int
98adv_eisa_probe(device_t dev)
99{
100	const char *desc;
101	u_int32_t iobase;
102	u_int8_t irq;
103
104	desc = adv_eisa_match(eisa_get_id(dev));
105	if (!desc)
106		return (ENXIO);
107	device_set_desc(dev, desc);
108
109	iobase = (eisa_get_slot(dev) * EISA_SLOT_SIZE) + ADV_EISA_SLOT_OFFSET;
110
111	eisa_add_iospace(dev, iobase, ADV_EISA_IOSIZE, RESVADDR_NONE);
112	irq = inb(iobase + ADV_EISA_IRQ_BURST_LEN_REG);
113	irq &= ADV_EISA_IRQ_MASK;
114	switch (irq) {
115	case 0:
116	case 1:
117	case 2:
118	case 4:
119	case 5:
120	    break;
121	default:
122	    printf("adv at slot %d: illegal "
123		   "irq setting %d\n", eisa_get_slot(dev),
124		   irq);
125	    return ENXIO;
126	}
127	eisa_add_intr(dev, irq + 10, EISA_TRIGGER_LEVEL);
128
129	return 0;
130}
131
132static int
133adv_eisa_attach(device_t dev)
134{
135	struct adv_softc *adv;
136	struct adv_softc *adv_b;
137	struct resource *io;
138	struct resource *irq;
139	int rid, error;
140	void *ih;
141
142	adv_b = NULL;
143
144	rid = 0;
145	io = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid,
146				0, ~0, 1, RF_ACTIVE);
147	if (!io) {
148		device_printf(dev, "No I/O space?!\n");
149		return ENOMEM;
150	}
151
152	rid = 0;
153	irq = bus_alloc_resource(dev, SYS_RES_IRQ, &rid,
154				 0, ~0, 1, RF_SHAREABLE | RF_ACTIVE);
155	if (!irq) {
156		device_printf(dev, "No irq?!\n");
157		bus_release_resource(dev, SYS_RES_IOPORT, 0, io);
158		return ENOMEM;
159
160	}
161
162	switch (eisa_get_id(dev) & ~0xF) {
163	case EISA_DEVICE_ID_ADVANSYS_750:
164		adv_b = adv_alloc(dev, rman_get_bustag(io),
165				  rman_get_bushandle(io) + ADV_EISA_OFFSET_CHAN2);
166		if (adv_b == NULL)
167			goto bad;
168
169		/*
170		 * Allocate a parent dmatag for all tags created
171		 * by the MI portions of the advansys driver
172		 */
173		/* XXX Should be a child of the PCI bus dma tag */
174		error = bus_dma_tag_create(/*parent*/NULL, /*alignment*/1,
175					   /*boundary*/0,
176					   /*lowaddr*/ADV_EISA_MAX_DMA_ADDR,
177					   /*highaddr*/BUS_SPACE_MAXADDR,
178					   /*filter*/NULL, /*filterarg*/NULL,
179					   /*maxsize*/BUS_SPACE_MAXSIZE_32BIT,
180					   /*nsegments*/~0,
181					   /*maxsegsz*/ADV_EISA_MAX_DMA_COUNT,
182					   /*flags*/0,
183					   &adv_b->parent_dmat);
184
185		if (error != 0) {
186			printf("%s: Could not allocate DMA tag - error %d\n",
187			       adv_name(adv_b), error);
188			adv_free(adv_b);
189			goto bad;
190		}
191
192		adv_b->init_level++;
193
194		/* FALLTHROUGH */
195	case EISA_DEVICE_ID_ADVANSYS_740:
196		adv = adv_alloc(dev, rman_get_bustag(io),
197				rman_get_bushandle(io) + ADV_EISA_OFFSET_CHAN1);
198		if (adv == NULL) {
199			if (adv_b != NULL)
200				adv_free(adv_b);
201			goto bad;
202		}
203
204		/*
205		 * Allocate a parent dmatag for all tags created
206		 * by the MI portions of the advansys driver
207		 */
208		/* XXX Should be a child of the PCI bus dma tag */
209		error = bus_dma_tag_create(/*parent*/NULL, /*alignment*/1,
210					   /*boundary*/0,
211					   /*lowaddr*/ADV_EISA_MAX_DMA_ADDR,
212					   /*highaddr*/BUS_SPACE_MAXADDR,
213					   /*filter*/NULL, /*filterarg*/NULL,
214					   /*maxsize*/BUS_SPACE_MAXSIZE_32BIT,
215					   /*nsegments*/~0,
216					   /*maxsegsz*/ADV_EISA_MAX_DMA_COUNT,
217					   /*flags*/0,
218					   &adv->parent_dmat);
219
220		if (error != 0) {
221			printf("%s: Could not allocate DMA tag - error %d\n",
222			       adv_name(adv), error);
223			adv_free(adv);
224			goto bad;
225		}
226
227		adv->init_level++;
228		break;
229	default:
230		printf("adveisaattach: Unknown device type!\n");
231		goto bad;
232		break;
233	}
234
235	if (overrun_buf == NULL) {
236		/* Need to allocate our overrun buffer */
237		if (bus_dma_tag_create(adv->parent_dmat,
238				       /*alignment*/8,
239				       /*boundary*/0,
240				       ADV_EISA_MAX_DMA_ADDR,
241				       BUS_SPACE_MAXADDR,
242				       /*filter*/NULL,
243				       /*filterarg*/NULL,
244				       ADV_OVERRUN_BSIZE,
245				       /*nsegments*/1,
246				       BUS_SPACE_MAXSIZE_32BIT,
247				       /*flags*/0,
248				       &overrun_dmat) != 0) {
249			adv_free(adv);
250			goto bad;
251       		}
252		if (bus_dmamem_alloc(overrun_dmat,
253				     (void **)&overrun_buf,
254				     BUS_DMA_NOWAIT,
255				     &overrun_dmamap) != 0) {
256			bus_dma_tag_destroy(overrun_dmat);
257			adv_free(adv);
258			goto bad;
259		}
260		/* And permanently map it in */
261		bus_dmamap_load(overrun_dmat, overrun_dmamap,
262				overrun_buf, ADV_OVERRUN_BSIZE,
263				adv_map, &overrun_physbase,
264				/*flags*/0);
265	}
266
267	/*
268	 * Now that we know we own the resources we need, do the
269	 * card initialization.
270	 */
271
272	/*
273	 * Stop the chip.
274	 */
275	ADV_OUTB(adv, ADV_CHIP_CTRL, ADV_CC_HALT);
276	ADV_OUTW(adv, ADV_CHIP_STATUS, 0);
277
278	adv->chip_version = EISA_REVISION_ID(eisa_get_id(dev))
279			  + ADV_CHIP_MIN_VER_EISA - 1;
280
281	if (adv_init(adv) != 0) {
282		adv_free(adv);
283		if (adv_b != NULL)
284			adv_free(adv_b);
285		return(-1);
286	}
287
288	adv->max_dma_count = ADV_EISA_MAX_DMA_COUNT;
289	adv->max_dma_addr = ADV_EISA_MAX_DMA_ADDR;
290
291	if (adv_b != NULL) {
292		/*
293		 * Stop the chip.
294		 */
295		ADV_OUTB(adv_b, ADV_CHIP_CTRL, ADV_CC_HALT);
296		ADV_OUTW(adv_b, ADV_CHIP_STATUS, 0);
297
298		adv_b->chip_version = EISA_REVISION_ID(eisa_get_id(dev))
299				    + ADV_CHIP_MIN_VER_EISA - 1;
300
301		if (adv_init(adv_b) != 0) {
302			adv_free(adv_b);
303		} else {
304			adv_b->max_dma_count = ADV_EISA_MAX_DMA_COUNT;
305			adv_b->max_dma_addr = ADV_EISA_MAX_DMA_ADDR;
306		}
307	}
308
309	/*
310	 * Enable our interrupt handler.
311	 */
312	bus_setup_intr(dev, irq, INTR_TYPE_CAM|INTR_ENTROPY, adv_intr, adv, &ih);
313
314	/* Attach sub-devices - always succeeds */
315	adv_attach(adv);
316	if (adv_b != NULL)
317		adv_attach(adv_b);
318
319	return 0;
320
321 bad:
322	bus_release_resource(dev, SYS_RES_IOPORT, 0, io);
323	bus_release_resource(dev, SYS_RES_IRQ, 0, irq);
324	return -1;
325}
326
327static device_method_t adv_eisa_methods[] = {
328	/* Device interface */
329	DEVMETHOD(device_probe,		adv_eisa_probe),
330	DEVMETHOD(device_attach,	adv_eisa_attach),
331	{ 0, 0 }
332};
333
334static driver_t adv_eisa_driver = {
335	"adv", adv_eisa_methods, sizeof(struct adv_softc)
336};
337
338static devclass_t adv_eisa_devclass;
339DRIVER_MODULE(adv, eisa, adv_eisa_driver, adv_eisa_devclass, 0, 0);
340