adv_eisa.c revision 232883 
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
36#include <sys/cdefs.h>
37__FBSDID("$FreeBSD: head/sys/dev/advansys/adv_eisa.c 232883 2012-03-12 19:29:35Z scottl $");
38
39#include <sys/param.h>
40#include <sys/systm.h>
41#include <sys/kernel.h>
42#include <sys/module.h>
43#include <sys/lock.h>
44#include <sys/mutex.h>
45#include <sys/bus.h>
46
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	void*		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_any(dev, SYS_RES_IOPORT, &rid, RF_ACTIVE);
148	if (!io) {
149		device_printf(dev, "No I/O space?!\n");
150		return ENOMEM;
151	}
152
153	rid = 0;
154	irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
155				     RF_SHAREABLE | RF_ACTIVE);
156	if (!irq) {
157		device_printf(dev, "No irq?!\n");
158		bus_release_resource(dev, SYS_RES_IOPORT, 0, io);
159		return ENOMEM;
160
161	}
162
163	switch (eisa_get_id(dev) & ~0xF) {
164	case EISA_DEVICE_ID_ADVANSYS_750:
165		adv_b = adv_alloc(dev, rman_get_bustag(io),
166				  rman_get_bushandle(io) + ADV_EISA_OFFSET_CHAN2);
167		if (adv_b == NULL)
168			goto bad;
169
170		/*
171		 * Allocate a parent dmatag for all tags created
172		 * by the MI portions of the advansys driver
173		 */
174		error = bus_dma_tag_create(
175				/* parent	*/ bus_get_dma_tag(dev),
176				/* alignment	*/ 1,
177				/* boundary	*/ 0,
178				/* lowaddr	*/ ADV_EISA_MAX_DMA_ADDR,
179				/* highaddr	*/ BUS_SPACE_MAXADDR,
180				/* filter	*/ NULL,
181				/* filterarg	*/ NULL,
182				/* maxsize	*/ BUS_SPACE_MAXSIZE_32BIT,
183				/* nsegments	*/ ~0,
184				/* maxsegsz	*/ ADV_EISA_MAX_DMA_COUNT,
185				/* flags	*/ 0,
186				/* lockfunc	*/ busdma_lock_mutex,
187				/* lockarg	*/ &Giant,
188				&adv_b->parent_dmat);
189
190		if (error != 0) {
191			printf("%s: Could not allocate DMA tag - error %d\n",
192			       adv_name(adv_b), error);
193			adv_free(adv_b);
194			goto bad;
195		}
196
197		adv_b->init_level++;
198
199		/* FALLTHROUGH */
200	case EISA_DEVICE_ID_ADVANSYS_740:
201		adv = adv_alloc(dev, rman_get_bustag(io),
202				rman_get_bushandle(io) + ADV_EISA_OFFSET_CHAN1);
203		if (adv == NULL) {
204			if (adv_b != NULL)
205				adv_free(adv_b);
206			goto bad;
207		}
208
209		/*
210		 * Allocate a parent dmatag for all tags created
211		 * by the MI portions of the advansys driver
212		 */
213		error = bus_dma_tag_create(
214				/* parent	*/ bus_get_dma_tag(dev),
215				/* alignment	*/ 1,
216				/* boundary	*/ 0,
217				/* lowaddr	*/ ADV_EISA_MAX_DMA_ADDR,
218				/* highaddr	*/ BUS_SPACE_MAXADDR,
219				/* filter	*/ NULL,
220				/* filterarg	*/ NULL,
221				/* maxsize	*/ BUS_SPACE_MAXSIZE_32BIT,
222				/* nsegments	*/ ~0,
223				/* maxsegsz	*/ ADV_EISA_MAX_DMA_COUNT,
224				/* flags	*/ 0,
225				/* lockfunc	*/ busdma_lock_mutex,
226				/* lockarg	*/ &Giant,
227				&adv->parent_dmat);
228
229		if (error != 0) {
230			printf("%s: Could not allocate DMA tag - error %d\n",
231			       adv_name(adv), error);
232			adv_free(adv);
233			goto bad;
234		}
235
236		adv->init_level++;
237		break;
238	default:
239		printf("adveisaattach: Unknown device type!\n");
240		goto bad;
241		break;
242	}
243
244	if (overrun_buf == NULL) {
245		/* Need to allocate our overrun buffer */
246		if (bus_dma_tag_create(
247				/* parent	*/ adv->parent_dmat,
248				/* alignment	*/ 8,
249				/* boundary	*/ 0,
250				/* lowaddr	*/ ADV_EISA_MAX_DMA_ADDR,
251				/* highaddr	*/ BUS_SPACE_MAXADDR,
252				/* filter	*/ NULL,
253				/* filterarg	*/ NULL,
254				/* maxsize	*/ ADV_OVERRUN_BSIZE,
255				/* nsegments	*/ 1,
256				/* maxsegsz	*/ BUS_SPACE_MAXSIZE_32BIT,
257				/* flags	*/ 0,
258				/* lockfunc	*/ busdma_lock_mutex,
259				/* lockarg	*/ &Giant,
260				&overrun_dmat) != 0) {
261			adv_free(adv);
262			goto bad;
263       		}
264		if (bus_dmamem_alloc(overrun_dmat,
265				     &overrun_buf,
266				     BUS_DMA_NOWAIT,
267				     &overrun_dmamap) != 0) {
268			bus_dma_tag_destroy(overrun_dmat);
269			adv_free(adv);
270			goto bad;
271		}
272		/* And permanently map it in */
273		bus_dmamap_load(overrun_dmat, overrun_dmamap,
274				overrun_buf, ADV_OVERRUN_BSIZE,
275				adv_map, &overrun_physbase,
276				/*flags*/0);
277	}
278
279	/*
280	 * Now that we know we own the resources we need, do the
281	 * card initialization.
282	 */
283
284	/*
285	 * Stop the chip.
286	 */
287	ADV_OUTB(adv, ADV_CHIP_CTRL, ADV_CC_HALT);
288	ADV_OUTW(adv, ADV_CHIP_STATUS, 0);
289
290	adv->chip_version = EISA_REVISION_ID(eisa_get_id(dev))
291			  + ADV_CHIP_MIN_VER_EISA - 1;
292
293	if (adv_init(adv) != 0) {
294		adv_free(adv);
295		if (adv_b != NULL)
296			adv_free(adv_b);
297		return(-1);
298	}
299
300	adv->max_dma_count = ADV_EISA_MAX_DMA_COUNT;
301	adv->max_dma_addr = ADV_EISA_MAX_DMA_ADDR;
302
303	if (adv_b != NULL) {
304		/*
305		 * Stop the chip.
306		 */
307		ADV_OUTB(adv_b, ADV_CHIP_CTRL, ADV_CC_HALT);
308		ADV_OUTW(adv_b, ADV_CHIP_STATUS, 0);
309
310		adv_b->chip_version = EISA_REVISION_ID(eisa_get_id(dev))
311				    + ADV_CHIP_MIN_VER_EISA - 1;
312
313		if (adv_init(adv_b) != 0) {
314			adv_free(adv_b);
315		} else {
316			adv_b->max_dma_count = ADV_EISA_MAX_DMA_COUNT;
317			adv_b->max_dma_addr = ADV_EISA_MAX_DMA_ADDR;
318		}
319	}
320
321	/*
322	 * Enable our interrupt handler.
323	 */
324	bus_setup_intr(dev, irq, INTR_TYPE_CAM|INTR_ENTROPY, NULL, adv_intr,
325	    adv, &ih);
326
327	/* Attach sub-devices - always succeeds */
328	adv_attach(adv);
329	if (adv_b != NULL)
330		adv_attach(adv_b);
331
332	return 0;
333
334 bad:
335	bus_release_resource(dev, SYS_RES_IOPORT, 0, io);
336	bus_release_resource(dev, SYS_RES_IRQ, 0, irq);
337	return -1;
338}
339
340static device_method_t adv_eisa_methods[] = {
341	/* Device interface */
342	DEVMETHOD(device_probe,		adv_eisa_probe),
343	DEVMETHOD(device_attach,	adv_eisa_attach),
344	{ 0, 0 }
345};
346
347static driver_t adv_eisa_driver = {
348	"adv", adv_eisa_methods, sizeof(struct adv_softc)
349};
350
351static devclass_t adv_eisa_devclass;
352DRIVER_MODULE(adv, eisa, adv_eisa_driver, adv_eisa_devclass, 0, 0);
353MODULE_DEPEND(adv, eisa, 1, 1, 1);
354