adv_eisa.c revision 117126 
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 117126 2003-07-01 15:52:06Z scottl $
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/lock.h>
43#include <sys/mutex.h>
44#include <sys/bus.h>
45
46#include <machine/bus_pio.h>
47#include <machine/bus.h>
48#include <machine/resource.h>
49#include <sys/rman.h>
50
51#include <dev/eisa/eisaconf.h>
52
53#include <dev/advansys/advansys.h>
54
55#define EISA_DEVICE_ID_ADVANSYS_740	0x04507400
56#define EISA_DEVICE_ID_ADVANSYS_750	0x04507500
57
58#define ADV_EISA_SLOT_OFFSET		0xc00
59#define ADV_EISA_OFFSET_CHAN1		0x30
60#define ADV_EISA_OFFSET_CHAN2		0x50
61#define ADV_EISA_IOSIZE			0x100
62
63#define ADV_EISA_ROM_BIOS_ADDR_REG	0x86
64#define ADV_EISA_IRQ_BURST_LEN_REG	0x87
65#define 	ADV_EISA_IRQ_MASK	0x07
66#define 	ADV_EISA_IRQ_10		0x00
67#define 	ADV_EISA_IRQ_11		0x01
68#define 	ADV_EISA_IRQ_12		0x02
69#define 	ADV_EISA_IRQ_14		0x04
70#define 	ADV_EISA_IRQ_15		0x05
71
72#define	ADV_EISA_MAX_DMA_ADDR   (0x07FFFFFFL)
73#define	ADV_EISA_MAX_DMA_COUNT  (0x07FFFFFFL)
74
75/*
76 * The overrun buffer shared amongst all EISA adapters.
77 */
78static	u_int8_t*	overrun_buf;
79static	bus_dma_tag_t	overrun_dmat;
80static	bus_dmamap_t	overrun_dmamap;
81static	bus_addr_t	overrun_physbase;
82
83static const char*
84adv_eisa_match(eisa_id_t type)
85{
86	switch (type & ~0xF) {
87	case EISA_DEVICE_ID_ADVANSYS_740:
88		return ("AdvanSys ABP-740/742 SCSI adapter");
89		break;
90	case EISA_DEVICE_ID_ADVANSYS_750:
91		return ("AdvanSys ABP-750/752 SCSI adapter");
92		break;
93	default:
94		break;
95	}
96	return (NULL);
97}
98
99static int
100adv_eisa_probe(device_t dev)
101{
102	const char *desc;
103	u_int32_t iobase;
104	u_int8_t irq;
105
106	desc = adv_eisa_match(eisa_get_id(dev));
107	if (!desc)
108		return (ENXIO);
109	device_set_desc(dev, desc);
110
111	iobase = (eisa_get_slot(dev) * EISA_SLOT_SIZE) + ADV_EISA_SLOT_OFFSET;
112
113	eisa_add_iospace(dev, iobase, ADV_EISA_IOSIZE, RESVADDR_NONE);
114	irq = inb(iobase + ADV_EISA_IRQ_BURST_LEN_REG);
115	irq &= ADV_EISA_IRQ_MASK;
116	switch (irq) {
117	case 0:
118	case 1:
119	case 2:
120	case 4:
121	case 5:
122	    break;
123	default:
124	    printf("adv at slot %d: illegal "
125		   "irq setting %d\n", eisa_get_slot(dev),
126		   irq);
127	    return ENXIO;
128	}
129	eisa_add_intr(dev, irq + 10, EISA_TRIGGER_LEVEL);
130
131	return 0;
132}
133
134static int
135adv_eisa_attach(device_t dev)
136{
137	struct adv_softc *adv;
138	struct adv_softc *adv_b;
139	struct resource *io;
140	struct resource *irq;
141	int rid, error;
142	void *ih;
143
144	adv_b = NULL;
145
146	rid = 0;
147	io = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid,
148				0, ~0, 1, RF_ACTIVE);
149	if (!io) {
150		device_printf(dev, "No I/O space?!\n");
151		return ENOMEM;
152	}
153
154	rid = 0;
155	irq = bus_alloc_resource(dev, SYS_RES_IRQ, &rid,
156				 0, ~0, 1, RF_SHAREABLE | RF_ACTIVE);
157	if (!irq) {
158		device_printf(dev, "No irq?!\n");
159		bus_release_resource(dev, SYS_RES_IOPORT, 0, io);
160		return ENOMEM;
161
162	}
163
164	switch (eisa_get_id(dev) & ~0xF) {
165	case EISA_DEVICE_ID_ADVANSYS_750:
166		adv_b = adv_alloc(dev, rman_get_bustag(io),
167				  rman_get_bushandle(io) + ADV_EISA_OFFSET_CHAN2);
168		if (adv_b == NULL)
169			goto bad;
170
171		/*
172		 * Allocate a parent dmatag for all tags created
173		 * by the MI portions of the advansys driver
174		 */
175		/* XXX Should be a child of the PCI bus dma tag */
176		error = bus_dma_tag_create(
177				/* parent	*/ NULL,
178				/* alignment	*/ 1,
179				/* boundary	*/ 0,
180				/* lowaddr	*/ ADV_EISA_MAX_DMA_ADDR,
181				/* highaddr	*/ BUS_SPACE_MAXADDR,
182				/* filter	*/ NULL,
183				/* filterarg	*/ NULL,
184				/* maxsize	*/ BUS_SPACE_MAXSIZE_32BIT,
185				/* nsegments	*/ ~0,
186				/* maxsegsz	*/ ADV_EISA_MAX_DMA_COUNT,
187				/* flags	*/ 0,
188				/* lockfunc	*/ busdma_lock_mutex,
189				/* lockarg	*/ &Giant,
190				&adv_b->parent_dmat);
191
192		if (error != 0) {
193			printf("%s: Could not allocate DMA tag - error %d\n",
194			       adv_name(adv_b), error);
195			adv_free(adv_b);
196			goto bad;
197		}
198
199		adv_b->init_level++;
200
201		/* FALLTHROUGH */
202	case EISA_DEVICE_ID_ADVANSYS_740:
203		adv = adv_alloc(dev, rman_get_bustag(io),
204				rman_get_bushandle(io) + ADV_EISA_OFFSET_CHAN1);
205		if (adv == NULL) {
206			if (adv_b != NULL)
207				adv_free(adv_b);
208			goto bad;
209		}
210
211		/*
212		 * Allocate a parent dmatag for all tags created
213		 * by the MI portions of the advansys driver
214		 */
215		/* XXX Should be a child of the PCI bus dma tag */
216		error = bus_dma_tag_create(
217				/* parent	*/ NULL,
218				/* alignment	*/ 1,
219				/* boundary	*/ 0,
220				/* lowaddr	*/ ADV_EISA_MAX_DMA_ADDR,
221				/* highaddr	*/ BUS_SPACE_MAXADDR,
222				/* filter	*/ NULL,
223				/* filterarg	*/ NULL,
224				/* maxsize	*/ BUS_SPACE_MAXSIZE_32BIT,
225				/* nsegments	*/ ~0,
226				/* maxsegsz	*/ ADV_EISA_MAX_DMA_COUNT,
227				/* flags	*/ 0,
228				/* lockfunc	*/ busdma_lock_mutex,
229				/* lockarg	*/ &Giant,
230				&adv->parent_dmat);
231
232		if (error != 0) {
233			printf("%s: Could not allocate DMA tag - error %d\n",
234			       adv_name(adv), error);
235			adv_free(adv);
236			goto bad;
237		}
238
239		adv->init_level++;
240		break;
241	default:
242		printf("adveisaattach: Unknown device type!\n");
243		goto bad;
244		break;
245	}
246
247	if (overrun_buf == NULL) {
248		/* Need to allocate our overrun buffer */
249		if (bus_dma_tag_create(
250				/* parent	*/ adv->parent_dmat,
251				/* alignment	*/ 8,
252				/* boundary	*/ 0,
253				/* lowaddr	*/ ADV_EISA_MAX_DMA_ADDR,
254				/* highaddr	*/ BUS_SPACE_MAXADDR,
255				/* filter	*/ NULL,
256				/* filterarg	*/ NULL,
257				/* maxsize	*/ ADV_OVERRUN_BSIZE,
258				/* nsegments	*/ 1,
259				/* maxsegsz	*/ BUS_SPACE_MAXSIZE_32BIT,
260				/* flags	*/ 0,
261				/* lockfunc	*/ busdma_lock_mutex,
262				/* lockarg	*/ &Giant,
263				&overrun_dmat) != 0) {
264			adv_free(adv);
265			goto bad;
266       		}
267		if (bus_dmamem_alloc(overrun_dmat,
268				     (void **)&overrun_buf,
269				     BUS_DMA_NOWAIT,
270				     &overrun_dmamap) != 0) {
271			bus_dma_tag_destroy(overrun_dmat);
272			adv_free(adv);
273			goto bad;
274		}
275		/* And permanently map it in */
276		bus_dmamap_load(overrun_dmat, overrun_dmamap,
277				overrun_buf, ADV_OVERRUN_BSIZE,
278				adv_map, &overrun_physbase,
279				/*flags*/0);
280	}
281
282	/*
283	 * Now that we know we own the resources we need, do the
284	 * card initialization.
285	 */
286
287	/*
288	 * Stop the chip.
289	 */
290	ADV_OUTB(adv, ADV_CHIP_CTRL, ADV_CC_HALT);
291	ADV_OUTW(adv, ADV_CHIP_STATUS, 0);
292
293	adv->chip_version = EISA_REVISION_ID(eisa_get_id(dev))
294			  + ADV_CHIP_MIN_VER_EISA - 1;
295
296	if (adv_init(adv) != 0) {
297		adv_free(adv);
298		if (adv_b != NULL)
299			adv_free(adv_b);
300		return(-1);
301	}
302
303	adv->max_dma_count = ADV_EISA_MAX_DMA_COUNT;
304	adv->max_dma_addr = ADV_EISA_MAX_DMA_ADDR;
305
306	if (adv_b != NULL) {
307		/*
308		 * Stop the chip.
309		 */
310		ADV_OUTB(adv_b, ADV_CHIP_CTRL, ADV_CC_HALT);
311		ADV_OUTW(adv_b, ADV_CHIP_STATUS, 0);
312
313		adv_b->chip_version = EISA_REVISION_ID(eisa_get_id(dev))
314				    + ADV_CHIP_MIN_VER_EISA - 1;
315
316		if (adv_init(adv_b) != 0) {
317			adv_free(adv_b);
318		} else {
319			adv_b->max_dma_count = ADV_EISA_MAX_DMA_COUNT;
320			adv_b->max_dma_addr = ADV_EISA_MAX_DMA_ADDR;
321		}
322	}
323
324	/*
325	 * Enable our interrupt handler.
326	 */
327	bus_setup_intr(dev, irq, INTR_TYPE_CAM|INTR_ENTROPY, adv_intr, adv, &ih);
328
329	/* Attach sub-devices - always succeeds */
330	adv_attach(adv);
331	if (adv_b != NULL)
332		adv_attach(adv_b);
333
334	return 0;
335
336 bad:
337	bus_release_resource(dev, SYS_RES_IOPORT, 0, io);
338	bus_release_resource(dev, SYS_RES_IRQ, 0, irq);
339	return -1;
340}
341
342static device_method_t adv_eisa_methods[] = {
343	/* Device interface */
344	DEVMETHOD(device_probe,		adv_eisa_probe),
345	DEVMETHOD(device_attach,	adv_eisa_attach),
346	{ 0, 0 }
347};
348
349static driver_t adv_eisa_driver = {
350	"adv", adv_eisa_methods, sizeof(struct adv_softc)
351};
352
353static devclass_t adv_eisa_devclass;
354DRIVER_MODULE(adv, eisa, adv_eisa_driver, adv_eisa_devclass, 0, 0);
355