xref: /freebsd/sys/dev/mpt/mpt_pci.c (revision acd3428b7d3e94cef0e1881c868cb4b131d4ff41)
1 /*-
2  * PCI specific probe and attach routines for LSI Fusion Adapters
3  * FreeBSD Version.
4  *
5  * Copyright (c) 2000, 2001 by Greg Ansley
6  * Partially derived from Matt Jacob's ISP driver.
7  * Copyright (c) 1997, 1998, 1999, 2000, 2001, 2002 by Matthew Jacob
8  * Feral Software
9  * All rights reserved.
10  *
11  * Redistribution and use in source and binary forms, with or without
12  * modification, are permitted provided that the following conditions
13  * are met:
14  * 1. Redistributions of source code must retain the above copyright
15  *    notice immediately at the beginning of the file, without modification,
16  *    this list of conditions, and the following disclaimer.
17  * 2. The name of the author may not be used to endorse or promote products
18  *    derived from this software without specific prior written permission.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
24  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30  * SUCH DAMAGE.
31  */
32 /*-
33  * Copyright (c) 2002, 2006 by Matthew Jacob
34  * All rights reserved.
35  *
36  * Redistribution and use in source and binary forms, with or without
37  * modification, are permitted provided that the following conditions are
38  * met:
39  * 1. Redistributions of source code must retain the above copyright
40  *    notice, this list of conditions and the following disclaimer.
41  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
42  *    substantially similar to the "NO WARRANTY" disclaimer below
43  *    ("Disclaimer") and any redistribution must be conditioned upon including
44  *    a substantially similar Disclaimer requirement for further binary
45  *    redistribution.
46  * 3. Neither the names of the above listed copyright holders nor the names
47  *    of any contributors may be used to endorse or promote products derived
48  *    from this software without specific prior written permission.
49  *
50  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
51  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
52  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
53  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
54  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
55  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
56  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
57  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
58  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
59  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF THE COPYRIGHT
60  * OWNER OR CONTRIBUTOR IS ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
61  *
62  * Support from Chris Ellsworth in order to make SAS adapters work
63  * is gratefully acknowledged.
64  *
65  * Support from LSI-Logic has also gone a great deal toward making this a
66  * workable subsystem and is gratefully acknowledged.
67  */
68 /*
69  * Copyright (c) 2004, Avid Technology, Inc. and its contributors.
70  * Copyright (c) 2005, WHEEL Sp. z o.o.
71  * Copyright (c) 2004, 2005 Justin T. Gibbs
72  * All rights reserved.
73  *
74  * Redistribution and use in source and binary forms, with or without
75  * modification, are permitted provided that the following conditions are
76  * met:
77  * 1. Redistributions of source code must retain the above copyright
78  *    notice, this list of conditions and the following disclaimer.
79  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
80  *    substantially similar to the "NO WARRANTY" disclaimer below
81  *    ("Disclaimer") and any redistribution must be conditioned upon including
82  *    a substantially similar Disclaimer requirement for further binary
83  *    redistribution.
84  * 3. Neither the names of the above listed copyright holders nor the names
85  *    of any contributors may be used to endorse or promote products derived
86  *    from this software without specific prior written permission.
87  *
88  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
89  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
90  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
91  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
92  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
93  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
94  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
95  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
96  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
97  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF THE COPYRIGHT
98  * OWNER OR CONTRIBUTOR IS ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
99  */
100 
101 #include <sys/cdefs.h>
102 __FBSDID("$FreeBSD$");
103 
104 #include <dev/mpt/mpt.h>
105 #include <dev/mpt/mpt_cam.h>
106 #include <dev/mpt/mpt_raid.h>
107 
108 
109 #ifndef	PCI_VENDOR_LSI
110 #define	PCI_VENDOR_LSI			0x1000
111 #endif
112 
113 #ifndef	PCI_PRODUCT_LSI_FC909
114 #define	PCI_PRODUCT_LSI_FC909		0x0620
115 #endif
116 
117 #ifndef	PCI_PRODUCT_LSI_FC909A
118 #define	PCI_PRODUCT_LSI_FC909A		0x0621
119 #endif
120 
121 #ifndef	PCI_PRODUCT_LSI_FC919
122 #define	PCI_PRODUCT_LSI_FC919		0x0624
123 #endif
124 
125 #ifndef	PCI_PRODUCT_LSI_FC929
126 #define	PCI_PRODUCT_LSI_FC929		0x0622
127 #endif
128 
129 #ifndef	PCI_PRODUCT_LSI_FC929X
130 #define	PCI_PRODUCT_LSI_FC929X		0x0626
131 #endif
132 
133 #ifndef	PCI_PRODUCT_LSI_FC919X
134 #define	PCI_PRODUCT_LSI_FC919X		0x0628
135 #endif
136 
137 #ifndef	PCI_PRODUCT_LSI_FC7X04X
138 #define	PCI_PRODUCT_LSI_FC7X04X		0x0640
139 #endif
140 
141 #ifndef	PCI_PRODUCT_LSI_FC646
142 #define	PCI_PRODUCT_LSI_FC646		0x0646
143 #endif
144 
145 #ifndef	PCI_PRODUCT_LSI_1030
146 #define	PCI_PRODUCT_LSI_1030		0x0030
147 #endif
148 
149 #ifndef	PCI_PRODUCT_LSI_SAS1064
150 #define PCI_PRODUCT_LSI_SAS1064		0x0050
151 #endif
152 
153 #ifndef PCI_PRODUCT_LSI_SAS1064A
154 #define PCI_PRODUCT_LSI_SAS1064A	0x005C
155 #endif
156 
157 #ifndef PCI_PRODUCT_LSI_SAS1064E
158 #define PCI_PRODUCT_LSI_SAS1064E	0x0056
159 #endif
160 
161 #ifndef PCI_PRODUCT_LSI_SAS1066
162 #define PCI_PRODUCT_LSI_SAS1066		0x005E
163 #endif
164 
165 #ifndef PCI_PRODUCT_LSI_SAS1066E
166 #define PCI_PRODUCT_LSI_SAS1066E	0x005A
167 #endif
168 
169 #ifndef PCI_PRODUCT_LSI_SAS1068
170 #define PCI_PRODUCT_LSI_SAS1068		0x0054
171 #endif
172 
173 #ifndef PCI_PRODUCT_LSI_SAS1068E
174 #define PCI_PRODUCT_LSI_SAS1068E	0x0058
175 #endif
176 
177 #ifndef PCI_PRODUCT_LSI_SAS1078
178 #define PCI_PRODUCT_LSI_SAS1078		0x0060
179 #endif
180 
181 #ifndef	PCIM_CMD_SERRESPEN
182 #define	PCIM_CMD_SERRESPEN	0x0100
183 #endif
184 
185 
186 #define	MPT_IO_BAR	0
187 #define	MPT_MEM_BAR	1
188 
189 static int mpt_pci_probe(device_t);
190 static int mpt_pci_attach(device_t);
191 static void mpt_free_bus_resources(struct mpt_softc *mpt);
192 static int mpt_pci_detach(device_t);
193 static int mpt_pci_shutdown(device_t);
194 static int mpt_dma_mem_alloc(struct mpt_softc *mpt);
195 static void mpt_dma_mem_free(struct mpt_softc *mpt);
196 static void mpt_read_config_regs(struct mpt_softc *mpt);
197 static void mpt_pci_intr(void *);
198 
199 static device_method_t mpt_methods[] = {
200 	/* Device interface */
201 	DEVMETHOD(device_probe,		mpt_pci_probe),
202 	DEVMETHOD(device_attach,	mpt_pci_attach),
203 	DEVMETHOD(device_detach,	mpt_pci_detach),
204 	DEVMETHOD(device_shutdown,	mpt_pci_shutdown),
205 	{ 0, 0 }
206 };
207 
208 static driver_t mpt_driver = {
209 	"mpt", mpt_methods, sizeof(struct mpt_softc)
210 };
211 static devclass_t mpt_devclass;
212 DRIVER_MODULE(mpt, pci, mpt_driver, mpt_devclass, 0, 0);
213 MODULE_VERSION(mpt, 1);
214 
215 static int
216 mpt_pci_probe(device_t dev)
217 {
218 	char *desc;
219 
220 	if (pci_get_vendor(dev) != PCI_VENDOR_LSI) {
221 		return (ENXIO);
222 	}
223 
224 	switch ((pci_get_device(dev) & ~1)) {
225 	case PCI_PRODUCT_LSI_FC909:
226 		desc = "LSILogic FC909 FC Adapter";
227 		break;
228 	case PCI_PRODUCT_LSI_FC909A:
229 		desc = "LSILogic FC909A FC Adapter";
230 		break;
231 	case PCI_PRODUCT_LSI_FC919:
232 		desc = "LSILogic FC919 FC Adapter";
233 		break;
234 	case PCI_PRODUCT_LSI_FC929:
235 		desc = "Dual LSILogic FC929 FC Adapter";
236 		break;
237 	case PCI_PRODUCT_LSI_FC919X:
238 		desc = "LSILogic FC919 FC PCI-X Adapter";
239 		break;
240 	case PCI_PRODUCT_LSI_FC929X:
241 		desc = "Dual LSILogic FC929X 2Gb/s FC PCI-X Adapter";
242 		break;
243 	case PCI_PRODUCT_LSI_FC646:
244 		desc = "Dual LSILogic FC7X04X 4Gb/s FC PCI-Express Adapter";
245 		break;
246 	case PCI_PRODUCT_LSI_FC7X04X:
247 		desc = "Dual LSILogic FC7X04X 4Gb/s FC PCI-X Adapter";
248 		break;
249 	case PCI_PRODUCT_LSI_1030:
250 		desc = "LSILogic 1030 Ultra4 Adapter";
251 		break;
252 	case PCI_PRODUCT_LSI_SAS1064:
253 	case PCI_PRODUCT_LSI_SAS1064A:
254 	case PCI_PRODUCT_LSI_SAS1064E:
255 	case PCI_PRODUCT_LSI_SAS1066:
256 	case PCI_PRODUCT_LSI_SAS1066E:
257 	case PCI_PRODUCT_LSI_SAS1068:
258 	case PCI_PRODUCT_LSI_SAS1068E:
259 	case PCI_PRODUCT_LSI_SAS1078:
260 		desc = "LSILogic SAS/SATA Adapter";
261 		break;
262 	default:
263 		return (ENXIO);
264 	}
265 
266 	device_set_desc(dev, desc);
267 	return (0);
268 }
269 
270 #if	__FreeBSD_version < 500000
271 static void
272 mpt_set_options(struct mpt_softc *mpt)
273 {
274 	int bitmap;
275 
276 	bitmap = 0;
277 	if (getenv_int("mpt_disable", &bitmap)) {
278 		if (bitmap & (1 << mpt->unit)) {
279 			mpt->disabled = 1;
280 		}
281 	}
282 	bitmap = 0;
283 	if (getenv_int("mpt_debug", &bitmap)) {
284 		if (bitmap & (1 << mpt->unit)) {
285 			mpt->verbose = MPT_PRT_DEBUG;
286 		}
287 	}
288 	bitmap = 0;
289 	if (getenv_int("mpt_debug1", &bitmap)) {
290 		if (bitmap & (1 << mpt->unit)) {
291 			mpt->verbose = MPT_PRT_DEBUG1;
292 		}
293 	}
294 	bitmap = 0;
295 	if (getenv_int("mpt_debug2", &bitmap)) {
296 		if (bitmap & (1 << mpt->unit)) {
297 			mpt->verbose = MPT_PRT_DEBUG2;
298 		}
299 	}
300 	bitmap = 0;
301 	if (getenv_int("mpt_debug3", &bitmap)) {
302 		if (bitmap & (1 << mpt->unit)) {
303 			mpt->verbose = MPT_PRT_DEBUG3;
304 		}
305 	}
306 
307 	mpt->cfg_role = MPT_ROLE_DEFAULT;
308 	bitmap = 0;
309 	if (getenv_int("mpt_nil_role", &bitmap)) {
310 		if (bitmap & (1 << mpt->unit)) {
311 			mpt->cfg_role = 0;
312 		}
313 		mpt->do_cfg_role = 1;
314 	}
315 	bitmap = 0;
316 	if (getenv_int("mpt_tgt_role", &bitmap)) {
317 		if (bitmap & (1 << mpt->unit)) {
318 			mpt->cfg_role |= MPT_ROLE_TARGET;
319 		}
320 		mpt->do_cfg_role = 1;
321 	}
322 	bitmap = 0;
323 	if (getenv_int("mpt_ini_role", &bitmap)) {
324 		if (bitmap & (1 << mpt->unit)) {
325 			mpt->cfg_role |= MPT_ROLE_INITIATOR;
326 		}
327 		mpt->do_cfg_role = 1;
328 	}
329 }
330 #else
331 static void
332 mpt_set_options(struct mpt_softc *mpt)
333 {
334 	int tval;
335 
336 	tval = 0;
337 	if (resource_int_value(device_get_name(mpt->dev),
338 	    device_get_unit(mpt->dev), "disable", &tval) == 0 && tval != 0) {
339 		mpt->disabled = 1;
340 	}
341 	tval = 0;
342 	if (resource_int_value(device_get_name(mpt->dev),
343 	    device_get_unit(mpt->dev), "debug", &tval) == 0 && tval != 0) {
344 		mpt->verbose = tval;
345 	}
346 	tval = -1;
347 	if (resource_int_value(device_get_name(mpt->dev),
348 	    device_get_unit(mpt->dev), "role", &tval) == 0 && tval >= 0 &&
349 	    tval <= 3) {
350 		mpt->cfg_role = tval;
351 		mpt->do_cfg_role = 1;
352 	}
353 }
354 #endif
355 
356 
357 static void
358 mpt_link_peer(struct mpt_softc *mpt)
359 {
360 	struct mpt_softc *mpt2;
361 
362 	if (mpt->unit == 0) {
363 		return;
364 	}
365 	/*
366 	 * XXX: depends on probe order
367 	 */
368 	mpt2 = (struct mpt_softc *)devclass_get_softc(mpt_devclass,mpt->unit-1);
369 
370 	if (mpt2 == NULL) {
371 		return;
372 	}
373 	if (pci_get_vendor(mpt2->dev) != pci_get_vendor(mpt->dev)) {
374 		return;
375 	}
376 	if (pci_get_device(mpt2->dev) != pci_get_device(mpt->dev)) {
377 		return;
378 	}
379 	mpt->mpt2 = mpt2;
380 	mpt2->mpt2 = mpt;
381 	if (mpt->verbose >= MPT_PRT_DEBUG) {
382 		mpt_prt(mpt, "linking with peer (mpt%d)\n",
383 		    device_get_unit(mpt2->dev));
384 	}
385 }
386 
387 static void
388 mpt_unlink_peer(struct mpt_softc *mpt)
389 {
390 	if (mpt->mpt2) {
391 		mpt->mpt2->mpt2 = NULL;
392 	}
393 }
394 
395 
396 static int
397 mpt_pci_attach(device_t dev)
398 {
399 	struct mpt_softc *mpt;
400 	int		  iqd;
401 	uint32_t	  data, cmd;
402 
403 	/* Allocate the softc structure */
404 	mpt  = (struct mpt_softc*)device_get_softc(dev);
405 	if (mpt == NULL) {
406 		device_printf(dev, "cannot allocate softc\n");
407 		return (ENOMEM);
408 	}
409 	memset(mpt, 0, sizeof(struct mpt_softc));
410 	switch ((pci_get_device(dev) & ~1)) {
411 	case PCI_PRODUCT_LSI_FC909:
412 	case PCI_PRODUCT_LSI_FC909A:
413 	case PCI_PRODUCT_LSI_FC919:
414 	case PCI_PRODUCT_LSI_FC929:
415 	case PCI_PRODUCT_LSI_FC919X:
416 	case PCI_PRODUCT_LSI_FC646:
417 	case PCI_PRODUCT_LSI_FC7X04X:
418 		mpt->is_fc = 1;
419 		break;
420 	case PCI_PRODUCT_LSI_SAS1064:
421 	case PCI_PRODUCT_LSI_SAS1064A:
422 	case PCI_PRODUCT_LSI_SAS1064E:
423 	case PCI_PRODUCT_LSI_SAS1066:
424 	case PCI_PRODUCT_LSI_SAS1066E:
425 	case PCI_PRODUCT_LSI_SAS1068:
426 	case PCI_PRODUCT_LSI_SAS1068E:
427 	case PCI_PRODUCT_LSI_SAS1078:
428 		mpt->is_sas = 1;
429 		break;
430 	default:
431 		mpt->is_spi = 1;
432 		break;
433 	}
434 	mpt->dev = dev;
435 	mpt->unit = device_get_unit(dev);
436 	mpt->raid_resync_rate = MPT_RAID_RESYNC_RATE_DEFAULT;
437 	mpt->raid_mwce_setting = MPT_RAID_MWCE_DEFAULT;
438 	mpt->raid_queue_depth = MPT_RAID_QUEUE_DEPTH_DEFAULT;
439 	mpt->verbose = MPT_PRT_NONE;
440 	mpt->role = MPT_ROLE_NONE;
441 	mpt_set_options(mpt);
442 	if (mpt->verbose == MPT_PRT_NONE) {
443 		mpt->verbose = MPT_PRT_WARN;
444 		/* Print INFO level (if any) if bootverbose is set */
445 		mpt->verbose += (bootverbose != 0)? 1 : 0;
446 	}
447 	/* Make sure memory access decoders are enabled */
448 	cmd = pci_read_config(dev, PCIR_COMMAND, 2);
449 	if ((cmd & PCIM_CMD_MEMEN) == 0) {
450 		device_printf(dev, "Memory accesses disabled");
451 		return (ENXIO);
452 	}
453 
454 	/*
455 	 * Make sure that SERR, PERR, WRITE INVALIDATE and BUSMASTER are set.
456 	 */
457 	cmd |=
458 	    PCIM_CMD_SERRESPEN | PCIM_CMD_PERRESPEN |
459 	    PCIM_CMD_BUSMASTEREN | PCIM_CMD_MWRICEN;
460 	pci_write_config(dev, PCIR_COMMAND, cmd, 2);
461 
462 	/*
463 	 * Make sure we've disabled the ROM.
464 	 */
465 	data = pci_read_config(dev, PCIR_BIOS, 4);
466 	data &= ~1;
467 	pci_write_config(dev, PCIR_BIOS, data, 4);
468 
469 	/*
470 	 * Is this part a dual?
471 	 * If so, link with our partner (around yet)
472 	 */
473 	if ((pci_get_device(dev) & ~1) == PCI_PRODUCT_LSI_FC929 ||
474 	    (pci_get_device(dev) & ~1) == PCI_PRODUCT_LSI_FC646 ||
475 	    (pci_get_device(dev) & ~1) == PCI_PRODUCT_LSI_FC7X04X ||
476 	    (pci_get_device(dev) & ~1) == PCI_PRODUCT_LSI_1030) {
477 		mpt_link_peer(mpt);
478 	}
479 
480 	/*
481 	 * Set up register access.  PIO mode is required for
482 	 * certain reset operations (but must be disabled for
483 	 * some cards otherwise).
484 	 */
485 	mpt->pci_pio_rid = PCIR_BAR(MPT_IO_BAR);
486 	mpt->pci_pio_reg = bus_alloc_resource(dev, SYS_RES_IOPORT,
487 			    &mpt->pci_pio_rid, 0, ~0, 0, RF_ACTIVE);
488 	if (mpt->pci_pio_reg == NULL) {
489 		device_printf(dev, "unable to map registers in PIO mode\n");
490 		goto bad;
491 	}
492 	mpt->pci_pio_st = rman_get_bustag(mpt->pci_pio_reg);
493 	mpt->pci_pio_sh = rman_get_bushandle(mpt->pci_pio_reg);
494 
495 	/* Allocate kernel virtual memory for the 9x9's Mem0 region */
496 	mpt->pci_mem_rid = PCIR_BAR(MPT_MEM_BAR);
497 	mpt->pci_reg = bus_alloc_resource(dev, SYS_RES_MEMORY,
498 			&mpt->pci_mem_rid, 0, ~0, 0, RF_ACTIVE);
499 	if (mpt->pci_reg == NULL) {
500 		device_printf(dev, "Unable to memory map registers.\n");
501 		if (mpt->is_sas) {
502 			device_printf(dev, "Giving Up.\n");
503 			goto bad;
504 		}
505 		device_printf(dev, "Falling back to PIO mode.\n");
506 		mpt->pci_st = mpt->pci_pio_st;
507 		mpt->pci_sh = mpt->pci_pio_sh;
508 	} else {
509 		mpt->pci_st = rman_get_bustag(mpt->pci_reg);
510 		mpt->pci_sh = rman_get_bushandle(mpt->pci_reg);
511 	}
512 
513 	/* Get a handle to the interrupt */
514 	iqd = 0;
515 	mpt->pci_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &iqd,
516 	    RF_ACTIVE | RF_SHAREABLE);
517 	if (mpt->pci_irq == NULL) {
518 		device_printf(dev, "could not allocate interrupt\n");
519 		goto bad;
520 	}
521 
522 	MPT_LOCK_SETUP(mpt);
523 
524 	/* Disable interrupts at the part */
525 	mpt_disable_ints(mpt);
526 
527 	/* Register the interrupt handler */
528 	if (bus_setup_intr(dev, mpt->pci_irq, MPT_IFLAGS, mpt_pci_intr,
529 	    mpt, &mpt->ih)) {
530 		device_printf(dev, "could not setup interrupt\n");
531 		goto bad;
532 	}
533 
534 	/* Allocate dma memory */
535 /* XXX JGibbs -Should really be done based on IOCFacts. */
536 	if (mpt_dma_mem_alloc(mpt)) {
537 		mpt_prt(mpt, "Could not allocate DMA memory\n");
538 		goto bad;
539 	}
540 
541 	/*
542 	 * Save the PCI config register values
543  	 *
544 	 * Hard resets are known to screw up the BAR for diagnostic
545 	 * memory accesses (Mem1).
546 	 *
547 	 * Using Mem1 is known to make the chip stop responding to
548 	 * configuration space transfers, so we need to save it now
549 	 */
550 
551 	mpt_read_config_regs(mpt);
552 
553 	/*
554 	 * Disable PIO until we need it
555 	 */
556 	if (mpt->is_sas) {
557 		pci_disable_io(dev, SYS_RES_IOPORT);
558 	}
559 
560 	/* Initialize the hardware */
561 	if (mpt->disabled == 0) {
562 		MPT_LOCK(mpt);
563 		if (mpt_attach(mpt) != 0) {
564 			MPT_UNLOCK(mpt);
565 			goto bad;
566 		}
567 		MPT_UNLOCK(mpt);
568 	} else {
569 		mpt_prt(mpt, "device disabled at user request\n");
570 		goto bad;
571 	}
572 
573 	mpt->eh = EVENTHANDLER_REGISTER(shutdown_post_sync, mpt_pci_shutdown,
574 	    dev, SHUTDOWN_PRI_DEFAULT);
575 
576 	if (mpt->eh == NULL) {
577 		mpt_prt(mpt, "shutdown event registration failed\n");
578 		MPT_LOCK(mpt);
579 		(void) mpt_detach(mpt);
580 		MPT_UNLOCK(mpt);
581 		goto bad;
582 	}
583 	KASSERT(MPT_OWNED(mpt) == 0, ("leaving attach with device locked"));
584 	return (0);
585 
586 bad:
587 	mpt_dma_mem_free(mpt);
588 	mpt_free_bus_resources(mpt);
589 	mpt_unlink_peer(mpt);
590 
591 	MPT_LOCK_DESTROY(mpt);
592 
593 	/*
594 	 * but return zero to preserve unit numbering
595 	 */
596 	return (0);
597 }
598 
599 /*
600  * Free bus resources
601  */
602 static void
603 mpt_free_bus_resources(struct mpt_softc *mpt)
604 {
605 	if (mpt->ih) {
606 		bus_teardown_intr(mpt->dev, mpt->pci_irq, mpt->ih);
607 		mpt->ih = 0;
608 	}
609 
610 	if (mpt->pci_irq) {
611 		bus_release_resource(mpt->dev, SYS_RES_IRQ, 0, mpt->pci_irq);
612 		mpt->pci_irq = 0;
613 	}
614 
615 	if (mpt->pci_pio_reg) {
616 		bus_release_resource(mpt->dev, SYS_RES_IOPORT, mpt->pci_pio_rid,
617 			mpt->pci_pio_reg);
618 		mpt->pci_pio_reg = 0;
619 	}
620 	if (mpt->pci_reg) {
621 		bus_release_resource(mpt->dev, SYS_RES_MEMORY, mpt->pci_mem_rid,
622 			mpt->pci_reg);
623 		mpt->pci_reg = 0;
624 	}
625 	MPT_LOCK_DESTROY(mpt);
626 }
627 
628 
629 /*
630  * Disconnect ourselves from the system.
631  */
632 static int
633 mpt_pci_detach(device_t dev)
634 {
635 	struct mpt_softc *mpt;
636 
637 	mpt  = (struct mpt_softc*)device_get_softc(dev);
638 
639 	if (mpt) {
640 		MPT_LOCK(mpt);
641 		mpt_disable_ints(mpt);
642 		mpt_detach(mpt);
643 		mpt_reset(mpt, /*reinit*/FALSE);
644 		mpt_dma_mem_free(mpt);
645 		mpt_free_bus_resources(mpt);
646 		mpt_raid_free_mem(mpt);
647 		if (mpt->eh != NULL) {
648                         EVENTHANDLER_DEREGISTER(shutdown_final, mpt->eh);
649 		}
650 		MPT_UNLOCK(mpt);
651 	}
652 	return(0);
653 }
654 
655 
656 /*
657  * Disable the hardware
658  */
659 static int
660 mpt_pci_shutdown(device_t dev)
661 {
662 	struct mpt_softc *mpt;
663 
664 	mpt = (struct mpt_softc *)device_get_softc(dev);
665 	if (mpt) {
666 		int r;
667 		MPT_LOCK(mpt);
668 		r = mpt_shutdown(mpt);
669 		MPT_UNLOCK(mpt);
670 		return (r);
671 	}
672 	return(0);
673 }
674 
675 static int
676 mpt_dma_mem_alloc(struct mpt_softc *mpt)
677 {
678 	int i, error, nsegs;
679 	uint8_t *vptr;
680 	uint32_t pptr, end;
681 	size_t len;
682 	struct mpt_map_info mi;
683 
684 	/* Check if we alreay have allocated the reply memory */
685 	if (mpt->reply_phys != 0) {
686 		return 0;
687 	}
688 
689 	len = sizeof (request_t) * MPT_MAX_REQUESTS(mpt);
690 #ifdef	RELENG_4
691 	mpt->request_pool = (request_t *)malloc(len, M_DEVBUF, M_WAITOK);
692 	if (mpt->request_pool == NULL) {
693 		mpt_prt(mpt, "cannot allocate request pool\n");
694 		return (1);
695 	}
696 	memset(mpt->request_pool, 0, len);
697 #else
698 	mpt->request_pool = (request_t *)malloc(len, M_DEVBUF, M_WAITOK|M_ZERO);
699 	if (mpt->request_pool == NULL) {
700 		mpt_prt(mpt, "cannot allocate request pool\n");
701 		return (1);
702 	}
703 #endif
704 
705 	/*
706 	 * Create a parent dma tag for this device.
707 	 *
708 	 * Align at byte boundaries,
709 	 * Limit to 32-bit addressing for request/reply queues.
710 	 */
711 	if (mpt_dma_tag_create(mpt, /*parent*/NULL, /*alignment*/1,
712 	    /*boundary*/0, /*lowaddr*/BUS_SPACE_MAXADDR,
713 	    /*highaddr*/BUS_SPACE_MAXADDR, /*filter*/NULL, /*filterarg*/NULL,
714 	    /*maxsize*/BUS_SPACE_MAXSIZE_32BIT,
715 	    /*nsegments*/BUS_SPACE_MAXSIZE_32BIT,
716 	    /*maxsegsz*/BUS_SPACE_UNRESTRICTED, /*flags*/0,
717 	    &mpt->parent_dmat) != 0) {
718 		mpt_prt(mpt, "cannot create parent dma tag\n");
719 		return (1);
720 	}
721 
722 	/* Create a child tag for reply buffers */
723 	if (mpt_dma_tag_create(mpt, mpt->parent_dmat, PAGE_SIZE, 0,
724 	    BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR,
725 	    NULL, NULL, 2 * PAGE_SIZE, 1, BUS_SPACE_MAXSIZE_32BIT, 0,
726 	    &mpt->reply_dmat) != 0) {
727 		mpt_prt(mpt, "cannot create a dma tag for replies\n");
728 		return (1);
729 	}
730 
731 	/* Allocate some DMA accessable memory for replies */
732 	if (bus_dmamem_alloc(mpt->reply_dmat, (void **)&mpt->reply,
733 	    BUS_DMA_NOWAIT, &mpt->reply_dmap) != 0) {
734 		mpt_prt(mpt, "cannot allocate %lu bytes of reply memory\n",
735 		    (u_long) (2 * PAGE_SIZE));
736 		return (1);
737 	}
738 
739 	mi.mpt = mpt;
740 	mi.error = 0;
741 
742 	/* Load and lock it into "bus space" */
743 	bus_dmamap_load(mpt->reply_dmat, mpt->reply_dmap, mpt->reply,
744 	    2 * PAGE_SIZE, mpt_map_rquest, &mi, 0);
745 
746 	if (mi.error) {
747 		mpt_prt(mpt, "error %d loading dma map for DMA reply queue\n",
748 		    mi.error);
749 		return (1);
750 	}
751 	mpt->reply_phys = mi.phys;
752 
753 	/* Create a child tag for data buffers */
754 
755 	/*
756 	 * XXX: we should say that nsegs is 'unrestricted, but that
757 	 * XXX: tickles a horrible bug in the busdma code. Instead,
758 	 * XXX: we'll derive a reasonable segment limit from MAXPHYS
759 	 */
760 	nsegs = (MAXPHYS / PAGE_SIZE) + 1;
761 	if (mpt_dma_tag_create(mpt, mpt->parent_dmat, 1,
762 	    0, BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
763 	    NULL, NULL, MAXBSIZE, nsegs, BUS_SPACE_MAXSIZE_32BIT, 0,
764 	    &mpt->buffer_dmat) != 0) {
765 		mpt_prt(mpt, "cannot create a dma tag for data buffers\n");
766 		return (1);
767 	}
768 
769 	/* Create a child tag for request buffers */
770 	if (mpt_dma_tag_create(mpt, mpt->parent_dmat, PAGE_SIZE, 0,
771 	    BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR,
772 	    NULL, NULL, MPT_REQ_MEM_SIZE(mpt), 1, BUS_SPACE_MAXSIZE_32BIT, 0,
773 	    &mpt->request_dmat) != 0) {
774 		mpt_prt(mpt, "cannot create a dma tag for requests\n");
775 		return (1);
776 	}
777 
778 	/* Allocate some DMA accessable memory for requests */
779 	if (bus_dmamem_alloc(mpt->request_dmat, (void **)&mpt->request,
780 	    BUS_DMA_NOWAIT, &mpt->request_dmap) != 0) {
781 		mpt_prt(mpt, "cannot allocate %d bytes of request memory\n",
782 		    MPT_REQ_MEM_SIZE(mpt));
783 		return (1);
784 	}
785 
786 	mi.mpt = mpt;
787 	mi.error = 0;
788 
789 	/* Load and lock it into "bus space" */
790         bus_dmamap_load(mpt->request_dmat, mpt->request_dmap, mpt->request,
791 	    MPT_REQ_MEM_SIZE(mpt), mpt_map_rquest, &mi, 0);
792 
793 	if (mi.error) {
794 		mpt_prt(mpt, "error %d loading dma map for DMA request queue\n",
795 		    mi.error);
796 		return (1);
797 	}
798 	mpt->request_phys = mi.phys;
799 
800 	/*
801 	 * Now create per-request dma maps
802 	 */
803 	i = 0;
804 	pptr =  mpt->request_phys;
805 	vptr =  mpt->request;
806 	end = pptr + MPT_REQ_MEM_SIZE(mpt);
807 	while(pptr < end) {
808 		request_t *req = &mpt->request_pool[i];
809 		req->index = i++;
810 
811 		/* Store location of Request Data */
812 		req->req_pbuf = pptr;
813 		req->req_vbuf = vptr;
814 
815 		pptr += MPT_REQUEST_AREA;
816 		vptr += MPT_REQUEST_AREA;
817 
818 		req->sense_pbuf = (pptr - MPT_SENSE_SIZE);
819 		req->sense_vbuf = (vptr - MPT_SENSE_SIZE);
820 
821 		error = bus_dmamap_create(mpt->buffer_dmat, 0, &req->dmap);
822 		if (error) {
823 			mpt_prt(mpt, "error %d creating per-cmd DMA maps\n",
824 			    error);
825 			return (1);
826 		}
827 	}
828 
829 	return (0);
830 }
831 
832 
833 
834 /* Deallocate memory that was allocated by mpt_dma_mem_alloc
835  */
836 static void
837 mpt_dma_mem_free(struct mpt_softc *mpt)
838 {
839 	int i;
840 
841         /* Make sure we aren't double destroying */
842         if (mpt->reply_dmat == 0) {
843 		mpt_lprt(mpt, MPT_PRT_DEBUG, "already released dma memory\n");
844 		return;
845         }
846 
847 	for (i = 0; i < MPT_MAX_REQUESTS(mpt); i++) {
848 		bus_dmamap_destroy(mpt->buffer_dmat, mpt->request_pool[i].dmap);
849 	}
850 	bus_dmamap_unload(mpt->request_dmat, mpt->request_dmap);
851 	bus_dmamem_free(mpt->request_dmat, mpt->request, mpt->request_dmap);
852 	bus_dma_tag_destroy(mpt->request_dmat);
853 	bus_dma_tag_destroy(mpt->buffer_dmat);
854 	bus_dmamap_unload(mpt->reply_dmat, mpt->reply_dmap);
855 	bus_dmamem_free(mpt->reply_dmat, mpt->reply, mpt->reply_dmap);
856 	bus_dma_tag_destroy(mpt->reply_dmat);
857 	bus_dma_tag_destroy(mpt->parent_dmat);
858 	mpt->reply_dmat = 0;
859 	free(mpt->request_pool, M_DEVBUF);
860 	mpt->request_pool = 0;
861 
862 }
863 
864 
865 
866 /* Reads modifiable (via PCI transactions) config registers */
867 static void
868 mpt_read_config_regs(struct mpt_softc *mpt)
869 {
870 	mpt->pci_cfg.Command = pci_read_config(mpt->dev, PCIR_COMMAND, 2);
871 	mpt->pci_cfg.LatencyTimer_LineSize =
872 	    pci_read_config(mpt->dev, PCIR_CACHELNSZ, 2);
873 	mpt->pci_cfg.IO_BAR = pci_read_config(mpt->dev, PCIR_BAR(0), 4);
874 	mpt->pci_cfg.Mem0_BAR[0] = pci_read_config(mpt->dev, PCIR_BAR(1), 4);
875 	mpt->pci_cfg.Mem0_BAR[1] = pci_read_config(mpt->dev, PCIR_BAR(2), 4);
876 	mpt->pci_cfg.Mem1_BAR[0] = pci_read_config(mpt->dev, PCIR_BAR(3), 4);
877 	mpt->pci_cfg.Mem1_BAR[1] = pci_read_config(mpt->dev, PCIR_BAR(4), 4);
878 	mpt->pci_cfg.ROM_BAR = pci_read_config(mpt->dev, PCIR_BIOS, 4);
879 	mpt->pci_cfg.IntLine = pci_read_config(mpt->dev, PCIR_INTLINE, 1);
880 	mpt->pci_cfg.PMCSR = pci_read_config(mpt->dev, 0x44, 4);
881 }
882 
883 /* Sets modifiable config registers */
884 void
885 mpt_set_config_regs(struct mpt_softc *mpt)
886 {
887 	uint32_t val;
888 
889 #define MPT_CHECK(reg, offset, size)					\
890 	val = pci_read_config(mpt->dev, offset, size);			\
891 	if (mpt->pci_cfg.reg != val) {					\
892 		mpt_prt(mpt,						\
893 		    "Restoring " #reg " to 0x%X from 0x%X\n",		\
894 		    mpt->pci_cfg.reg, val);				\
895 	}
896 
897 	if (mpt->verbose >= MPT_PRT_DEBUG) {
898 		MPT_CHECK(Command, PCIR_COMMAND, 2);
899 		MPT_CHECK(LatencyTimer_LineSize, PCIR_CACHELNSZ, 2);
900 		MPT_CHECK(IO_BAR, PCIR_BAR(0), 4);
901 		MPT_CHECK(Mem0_BAR[0], PCIR_BAR(1), 4);
902 		MPT_CHECK(Mem0_BAR[1], PCIR_BAR(2), 4);
903 		MPT_CHECK(Mem1_BAR[0], PCIR_BAR(3), 4);
904 		MPT_CHECK(Mem1_BAR[1], PCIR_BAR(4), 4);
905 		MPT_CHECK(ROM_BAR, PCIR_BIOS, 4);
906 		MPT_CHECK(IntLine, PCIR_INTLINE, 1);
907 		MPT_CHECK(PMCSR, 0x44, 4);
908 	}
909 #undef MPT_CHECK
910 
911 	pci_write_config(mpt->dev, PCIR_COMMAND, mpt->pci_cfg.Command, 2);
912 	pci_write_config(mpt->dev, PCIR_CACHELNSZ,
913 	    mpt->pci_cfg.LatencyTimer_LineSize, 2);
914 	pci_write_config(mpt->dev, PCIR_BAR(0), mpt->pci_cfg.IO_BAR, 4);
915 	pci_write_config(mpt->dev, PCIR_BAR(1), mpt->pci_cfg.Mem0_BAR[0], 4);
916 	pci_write_config(mpt->dev, PCIR_BAR(2), mpt->pci_cfg.Mem0_BAR[1], 4);
917 	pci_write_config(mpt->dev, PCIR_BAR(3), mpt->pci_cfg.Mem1_BAR[0], 4);
918 	pci_write_config(mpt->dev, PCIR_BAR(4), mpt->pci_cfg.Mem1_BAR[1], 4);
919 	pci_write_config(mpt->dev, PCIR_BIOS, mpt->pci_cfg.ROM_BAR, 4);
920 	pci_write_config(mpt->dev, PCIR_INTLINE, mpt->pci_cfg.IntLine, 1);
921 	pci_write_config(mpt->dev, 0x44, mpt->pci_cfg.PMCSR, 4);
922 }
923 
924 static void
925 mpt_pci_intr(void *arg)
926 {
927 	struct mpt_softc *mpt;
928 
929 	mpt = (struct mpt_softc *)arg;
930 	MPT_LOCK(mpt);
931 	mpt_intr(mpt);
932 	MPT_UNLOCK(mpt);
933 }
934