FreeBSD/Linux Kernel Cross Reference
sys/dev/amr/amr_pci.c
1 /*-
2 * Copyright (c) 1999,2000 Michael Smith
3 * Copyright (c) 2000 BSDi
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27 /*-
28 * Copyright (c) 2002 Eric Moore
29 * Copyright (c) 2002, 2004 LSI Logic Corporation
30 * All rights reserved.
31 *
32 * Redistribution and use in source and binary forms, with or without
33 * modification, are permitted provided that the following conditions
34 * are met:
35 * 1. Redistributions of source code must retain the above copyright
36 * notice, this list of conditions and the following disclaimer.
37 * 2. Redistributions in binary form must reproduce the above copyright
38 * notice, this list of conditions and the following disclaimer in the
39 * documentation and/or other materials provided with the distribution.
40 * 3. The party using or redistributing the source code and binary forms
41 * agrees to the disclaimer below and the terms and conditions set forth
42 * herein.
43 *
44 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
45 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
46 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
47 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
48 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
49 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
50 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
51 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
52 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
53 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
54 * SUCH DAMAGE.
55 */
56
57 #include <sys/cdefs.h>
58 __FBSDID("$FreeBSD: releng/9.0/sys/dev/amr/amr_pci.c 174544 2007-12-12 05:55:03Z scottl $");
59
60 #include <sys/param.h>
61 #include <sys/systm.h>
62 #include <sys/kernel.h>
63 #include <sys/module.h>
64 #include <sys/sysctl.h>
65
66 #include <sys/bio.h>
67 #include <sys/bus.h>
68 #include <sys/conf.h>
69
70 #include <machine/bus.h>
71 #include <machine/resource.h>
72 #include <sys/rman.h>
73
74 #include <dev/pci/pcireg.h>
75 #include <dev/pci/pcivar.h>
76
77 #include <dev/amr/amrio.h>
78 #include <dev/amr/amrreg.h>
79 #include <dev/amr/amrvar.h>
80
81 static int amr_pci_probe(device_t dev);
82 static int amr_pci_attach(device_t dev);
83 static int amr_pci_detach(device_t dev);
84 static int amr_pci_shutdown(device_t dev);
85 static int amr_pci_suspend(device_t dev);
86 static int amr_pci_resume(device_t dev);
87 static void amr_pci_intr(void *arg);
88 static void amr_pci_free(struct amr_softc *sc);
89 static void amr_sglist_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error);
90 static int amr_sglist_map(struct amr_softc *sc);
91 static int amr_setup_mbox(struct amr_softc *sc);
92 static int amr_ccb_map(struct amr_softc *sc);
93
94 static u_int amr_force_sg32 = 0;
95 TUNABLE_INT("hw.amr.force_sg32", &amr_force_sg32);
96 SYSCTL_DECL(_hw_amr);
97 SYSCTL_UINT(_hw_amr, OID_AUTO, force_sg32, CTLFLAG_RDTUN, &amr_force_sg32, 0,
98 "Force the AMR driver to use 32bit scatter gather");
99
100 static device_method_t amr_methods[] = {
101 /* Device interface */
102 DEVMETHOD(device_probe, amr_pci_probe),
103 DEVMETHOD(device_attach, amr_pci_attach),
104 DEVMETHOD(device_detach, amr_pci_detach),
105 DEVMETHOD(device_shutdown, amr_pci_shutdown),
106 DEVMETHOD(device_suspend, amr_pci_suspend),
107 DEVMETHOD(device_resume, amr_pci_resume),
108
109 DEVMETHOD(bus_print_child, bus_generic_print_child),
110 DEVMETHOD(bus_driver_added, bus_generic_driver_added),
111 { 0, 0 }
112 };
113
114 static driver_t amr_pci_driver = {
115 "amr",
116 amr_methods,
117 sizeof(struct amr_softc)
118 };
119
120 static devclass_t amr_devclass;
121 DRIVER_MODULE(amr, pci, amr_pci_driver, amr_devclass, 0, 0);
122 MODULE_DEPEND(amr, pci, 1, 1, 1);
123 MODULE_DEPEND(amr, cam, 1, 1, 1);
124
125 static struct amr_ident
126 {
127 int vendor;
128 int device;
129 int flags;
130 #define AMR_ID_PROBE_SIG (1<<0) /* generic i960RD, check signature */
131 #define AMR_ID_DO_SG64 (1<<1)
132 #define AMR_ID_QUARTZ (1<<2)
133 } amr_device_ids[] = {
134 {0x101e, 0x9010, 0},
135 {0x101e, 0x9060, 0},
136 {0x8086, 0x1960, AMR_ID_QUARTZ | AMR_ID_PROBE_SIG},
137 {0x101e, 0x1960, AMR_ID_QUARTZ},
138 {0x1000, 0x1960, AMR_ID_QUARTZ | AMR_ID_DO_SG64 | AMR_ID_PROBE_SIG},
139 {0x1000, 0x0407, AMR_ID_QUARTZ | AMR_ID_DO_SG64},
140 {0x1000, 0x0408, AMR_ID_QUARTZ | AMR_ID_DO_SG64},
141 {0x1000, 0x0409, AMR_ID_QUARTZ | AMR_ID_DO_SG64},
142 {0x1028, 0x000e, AMR_ID_QUARTZ | AMR_ID_DO_SG64 | AMR_ID_PROBE_SIG}, /* perc4/di i960 */
143 {0x1028, 0x000f, AMR_ID_QUARTZ | AMR_ID_DO_SG64}, /* perc4/di Verde*/
144 {0x1028, 0x0013, AMR_ID_QUARTZ | AMR_ID_DO_SG64}, /* perc4/di */
145 {0, 0, 0}
146 };
147
148 static struct amr_ident *
149 amr_find_ident(device_t dev)
150 {
151 struct amr_ident *id;
152 int sig;
153
154 for (id = amr_device_ids; id->vendor != 0; id++) {
155 if ((pci_get_vendor(dev) == id->vendor) &&
156 (pci_get_device(dev) == id->device)) {
157
158 /* do we need to test for a signature? */
159 if (id->flags & AMR_ID_PROBE_SIG) {
160 sig = pci_read_config(dev, AMR_CFG_SIG, 2);
161 if ((sig != AMR_SIGNATURE_1) && (sig != AMR_SIGNATURE_2))
162 continue;
163 }
164 return (id);
165 }
166 }
167 return (NULL);
168 }
169
170 static int
171 amr_pci_probe(device_t dev)
172 {
173
174 debug_called(1);
175
176 if (amr_find_ident(dev) != NULL) {
177 device_set_desc(dev, LSI_DESC_PCI);
178 return(BUS_PROBE_DEFAULT);
179 }
180 return(ENXIO);
181 }
182
183 static int
184 amr_pci_attach(device_t dev)
185 {
186 struct amr_softc *sc;
187 struct amr_ident *id;
188 int rid, rtype, error;
189 u_int32_t command;
190
191 debug_called(1);
192
193 /*
194 * Initialise softc.
195 */
196 sc = device_get_softc(dev);
197 bzero(sc, sizeof(*sc));
198 sc->amr_dev = dev;
199
200 /* assume failure is 'not configured' */
201 error = ENXIO;
202
203 /*
204 * Determine board type.
205 */
206 if ((id = amr_find_ident(dev)) == NULL)
207 return (ENXIO);
208
209 command = pci_read_config(dev, PCIR_COMMAND, 1);
210 if (id->flags & AMR_ID_QUARTZ) {
211 /*
212 * Make sure we are going to be able to talk to this board.
213 */
214 if ((command & PCIM_CMD_MEMEN) == 0) {
215 device_printf(dev, "memory window not available\n");
216 return (ENXIO);
217 }
218 sc->amr_type |= AMR_TYPE_QUARTZ;
219 } else {
220 /*
221 * Make sure we are going to be able to talk to this board.
222 */
223 if ((command & PCIM_CMD_PORTEN) == 0) {
224 device_printf(dev, "I/O window not available\n");
225 return (ENXIO);
226 }
227 }
228
229 if ((amr_force_sg32 == 0) && (id->flags & AMR_ID_DO_SG64) &&
230 (sizeof(vm_paddr_t) > 4)) {
231 device_printf(dev, "Using 64-bit DMA\n");
232 sc->amr_type |= AMR_TYPE_SG64;
233 }
234
235 /* force the busmaster enable bit on */
236 if (!(command & PCIM_CMD_BUSMASTEREN)) {
237 device_printf(dev, "busmaster bit not set, enabling\n");
238 command |= PCIM_CMD_BUSMASTEREN;
239 pci_write_config(dev, PCIR_COMMAND, command, 2);
240 }
241
242 /*
243 * Allocate the PCI register window.
244 */
245 rid = PCIR_BAR(0);
246 rtype = AMR_IS_QUARTZ(sc) ? SYS_RES_MEMORY : SYS_RES_IOPORT;
247 sc->amr_reg = bus_alloc_resource_any(dev, rtype, &rid, RF_ACTIVE);
248 if (sc->amr_reg == NULL) {
249 device_printf(sc->amr_dev, "can't allocate register window\n");
250 goto out;
251 }
252 sc->amr_btag = rman_get_bustag(sc->amr_reg);
253 sc->amr_bhandle = rman_get_bushandle(sc->amr_reg);
254
255 /*
256 * Allocate and connect our interrupt.
257 */
258 rid = 0;
259 sc->amr_irq = bus_alloc_resource_any(sc->amr_dev, SYS_RES_IRQ, &rid,
260 RF_SHAREABLE | RF_ACTIVE);
261 if (sc->amr_irq == NULL) {
262 device_printf(sc->amr_dev, "can't allocate interrupt\n");
263 goto out;
264 }
265 if (bus_setup_intr(sc->amr_dev, sc->amr_irq,
266 INTR_TYPE_BIO | INTR_ENTROPY | INTR_MPSAFE, NULL, amr_pci_intr,
267 sc, &sc->amr_intr)) {
268 device_printf(sc->amr_dev, "can't set up interrupt\n");
269 goto out;
270 }
271
272 debug(2, "interrupt attached");
273
274 /* assume failure is 'out of memory' */
275 error = ENOMEM;
276
277 /*
278 * Allocate the parent bus DMA tag appropriate for PCI.
279 */
280 if (bus_dma_tag_create(NULL, /* parent */
281 1, 0, /* alignment,boundary */
282 AMR_IS_SG64(sc) ?
283 BUS_SPACE_MAXADDR :
284 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
285 BUS_SPACE_MAXADDR, /* highaddr */
286 NULL, NULL, /* filter, filterarg */
287 MAXBSIZE, AMR_NSEG, /* maxsize, nsegments */
288 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
289 0, /* flags */
290 NULL, NULL, /* lockfunc, lockarg */
291 &sc->amr_parent_dmat)) {
292 device_printf(dev, "can't allocate parent DMA tag\n");
293 goto out;
294 }
295
296 /*
297 * Create DMA tag for mapping buffers into controller-addressable space.
298 */
299 if (bus_dma_tag_create(sc->amr_parent_dmat, /* parent */
300 1, 0, /* alignment,boundary */
301 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
302 BUS_SPACE_MAXADDR, /* highaddr */
303 NULL, NULL, /* filter, filterarg */
304 MAXBSIZE, AMR_NSEG, /* maxsize, nsegments */
305 MAXBSIZE, /* maxsegsize */
306 0, /* flags */
307 busdma_lock_mutex, /* lockfunc */
308 &sc->amr_list_lock, /* lockarg */
309 &sc->amr_buffer_dmat)) {
310 device_printf(sc->amr_dev, "can't allocate buffer DMA tag\n");
311 goto out;
312 }
313
314 if (bus_dma_tag_create(sc->amr_parent_dmat, /* parent */
315 1, 0, /* alignment,boundary */
316 BUS_SPACE_MAXADDR, /* lowaddr */
317 BUS_SPACE_MAXADDR, /* highaddr */
318 NULL, NULL, /* filter, filterarg */
319 MAXBSIZE, AMR_NSEG, /* maxsize, nsegments */
320 MAXBSIZE, /* maxsegsize */
321 0, /* flags */
322 busdma_lock_mutex, /* lockfunc */
323 &sc->amr_list_lock, /* lockarg */
324 &sc->amr_buffer64_dmat)) {
325 device_printf(sc->amr_dev, "can't allocate buffer DMA tag\n");
326 goto out;
327 }
328
329 debug(2, "dma tag done");
330
331 /*
332 * Allocate and set up mailbox in a bus-visible fashion.
333 */
334 mtx_init(&sc->amr_list_lock, "AMR List Lock", NULL, MTX_DEF);
335 mtx_init(&sc->amr_hw_lock, "AMR HW Lock", NULL, MTX_DEF);
336 if ((error = amr_setup_mbox(sc)) != 0)
337 goto out;
338
339 debug(2, "mailbox setup");
340
341 /*
342 * Build the scatter/gather buffers.
343 */
344 if (amr_sglist_map(sc))
345 goto out;
346 debug(2, "s/g list mapped");
347
348 if (amr_ccb_map(sc))
349 goto out;
350 debug(2, "ccb mapped");
351
352
353 /*
354 * Do bus-independant initialisation, bring controller online.
355 */
356 error = amr_attach(sc);
357
358 out:
359 if (error)
360 amr_pci_free(sc);
361 return(error);
362 }
363
364 /********************************************************************************
365 * Disconnect from the controller completely, in preparation for unload.
366 */
367 static int
368 amr_pci_detach(device_t dev)
369 {
370 struct amr_softc *sc = device_get_softc(dev);
371 int error;
372
373 debug_called(1);
374
375 if (sc->amr_state & AMR_STATE_OPEN)
376 return(EBUSY);
377
378 if ((error = amr_pci_shutdown(dev)))
379 return(error);
380
381 amr_pci_free(sc);
382
383 return(0);
384 }
385
386 /********************************************************************************
387 * Bring the controller down to a dormant state and detach all child devices.
388 *
389 * This function is called before detach, system shutdown, or before performing
390 * an operation which may add or delete system disks. (Call amr_startup to
391 * resume normal operation.)
392 *
393 * Note that we can assume that the bioq on the controller is empty, as we won't
394 * allow shutdown if any device is open.
395 */
396 static int
397 amr_pci_shutdown(device_t dev)
398 {
399 struct amr_softc *sc = device_get_softc(dev);
400 int i,error;
401
402 debug_called(1);
403
404 /* mark ourselves as in-shutdown */
405 sc->amr_state |= AMR_STATE_SHUTDOWN;
406
407
408 /* flush controller */
409 device_printf(sc->amr_dev, "flushing cache...");
410 printf("%s\n", amr_flush(sc) ? "failed" : "done");
411
412 error = 0;
413
414 /* delete all our child devices */
415 for(i = 0 ; i < AMR_MAXLD; i++) {
416 if( sc->amr_drive[i].al_disk != 0) {
417 if((error = device_delete_child(sc->amr_dev,sc->amr_drive[i].al_disk)) != 0)
418 goto shutdown_out;
419 sc->amr_drive[i].al_disk = 0;
420 }
421 }
422
423 /* XXX disable interrupts? */
424
425 shutdown_out:
426 return(error);
427 }
428
429 /********************************************************************************
430 * Bring the controller to a quiescent state, ready for system suspend.
431 */
432 static int
433 amr_pci_suspend(device_t dev)
434 {
435 struct amr_softc *sc = device_get_softc(dev);
436
437 debug_called(1);
438
439 sc->amr_state |= AMR_STATE_SUSPEND;
440
441 /* flush controller */
442 device_printf(sc->amr_dev, "flushing cache...");
443 printf("%s\n", amr_flush(sc) ? "failed" : "done");
444
445 /* XXX disable interrupts? */
446
447 return(0);
448 }
449
450 /********************************************************************************
451 * Bring the controller back to a state ready for operation.
452 */
453 static int
454 amr_pci_resume(device_t dev)
455 {
456 struct amr_softc *sc = device_get_softc(dev);
457
458 debug_called(1);
459
460 sc->amr_state &= ~AMR_STATE_SUSPEND;
461
462 /* XXX enable interrupts? */
463
464 return(0);
465 }
466
467 /*******************************************************************************
468 * Take an interrupt, or be poked by other code to look for interrupt-worthy
469 * status.
470 */
471 static void
472 amr_pci_intr(void *arg)
473 {
474 struct amr_softc *sc = (struct amr_softc *)arg;
475
476 debug_called(3);
477
478 /* collect finished commands, queue anything waiting */
479 amr_done(sc);
480 }
481
482 /********************************************************************************
483 * Free all of the resources associated with (sc)
484 *
485 * Should not be called if the controller is active.
486 */
487 static void
488 amr_pci_free(struct amr_softc *sc)
489 {
490 void *p;
491
492 debug_called(1);
493
494 amr_free(sc);
495
496 /* destroy data-transfer DMA tag */
497 if (sc->amr_buffer_dmat)
498 bus_dma_tag_destroy(sc->amr_buffer_dmat);
499 if (sc->amr_buffer64_dmat)
500 bus_dma_tag_destroy(sc->amr_buffer64_dmat);
501
502 /* free and destroy DMA memory and tag for passthrough pool */
503 if (sc->amr_ccb)
504 bus_dmamem_free(sc->amr_ccb_dmat, sc->amr_ccb, sc->amr_ccb_dmamap);
505 if (sc->amr_ccb_dmat)
506 bus_dma_tag_destroy(sc->amr_ccb_dmat);
507
508 /* free and destroy DMA memory and tag for s/g lists */
509 if (sc->amr_sgtable)
510 bus_dmamem_free(sc->amr_sg_dmat, sc->amr_sgtable, sc->amr_sg_dmamap);
511 if (sc->amr_sg_dmat)
512 bus_dma_tag_destroy(sc->amr_sg_dmat);
513
514 /* free and destroy DMA memory and tag for mailbox */
515 p = (void *)(uintptr_t)(volatile void *)sc->amr_mailbox64;
516 if (sc->amr_mailbox) {
517 bus_dmamem_free(sc->amr_mailbox_dmat, p, sc->amr_mailbox_dmamap);
518 }
519 if (sc->amr_mailbox_dmat)
520 bus_dma_tag_destroy(sc->amr_mailbox_dmat);
521
522 /* disconnect the interrupt handler */
523 if (sc->amr_intr)
524 bus_teardown_intr(sc->amr_dev, sc->amr_irq, sc->amr_intr);
525 if (sc->amr_irq != NULL)
526 bus_release_resource(sc->amr_dev, SYS_RES_IRQ, 0, sc->amr_irq);
527
528 /* destroy the parent DMA tag */
529 if (sc->amr_parent_dmat)
530 bus_dma_tag_destroy(sc->amr_parent_dmat);
531
532 /* release the register window mapping */
533 if (sc->amr_reg != NULL)
534 bus_release_resource(sc->amr_dev,
535 AMR_IS_QUARTZ(sc) ? SYS_RES_MEMORY : SYS_RES_IOPORT,
536 PCIR_BAR(0), sc->amr_reg);
537 }
538
539 /********************************************************************************
540 * Allocate and map the scatter/gather table in bus space.
541 */
542 static void
543 amr_sglist_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error)
544 {
545 uint32_t *addr;
546
547 debug_called(1);
548
549 addr = arg;
550 *addr = segs[0].ds_addr;
551 }
552
553 static int
554 amr_sglist_map(struct amr_softc *sc)
555 {
556 size_t segsize;
557 void *p;
558 int error;
559
560 debug_called(1);
561
562 /*
563 * Create a single tag describing a region large enough to hold all of
564 * the s/g lists we will need.
565 *
566 * Note that we could probably use AMR_LIMITCMD here, but that may become
567 * tunable.
568 */
569 if (AMR_IS_SG64(sc))
570 segsize = sizeof(struct amr_sg64entry) * AMR_NSEG * AMR_MAXCMD;
571 else
572 segsize = sizeof(struct amr_sgentry) * AMR_NSEG * AMR_MAXCMD;
573
574 error = bus_dma_tag_create(sc->amr_parent_dmat, /* parent */
575 512, 0, /* alignment,boundary */
576 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
577 BUS_SPACE_MAXADDR, /* highaddr */
578 NULL, NULL, /* filter, filterarg */
579 segsize, 1, /* maxsize, nsegments */
580 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
581 0, /* flags */
582 NULL, NULL, /* lockfunc, lockarg */
583 &sc->amr_sg_dmat);
584 if (error != 0) {
585 device_printf(sc->amr_dev, "can't allocate scatter/gather DMA tag\n");
586 return(ENOMEM);
587 }
588
589 /*
590 * Allocate enough s/g maps for all commands and permanently map them into
591 * controller-visible space.
592 *
593 * XXX this assumes we can get enough space for all the s/g maps in one
594 * contiguous slab. We may need to switch to a more complex arrangement
595 * where we allocate in smaller chunks and keep a lookup table from slot
596 * to bus address.
597 *
598 * XXX HACK ALERT: at least some controllers don't like the s/g memory
599 * being allocated below 0x2000. We leak some memory if
600 * we get some below this mark and allocate again. We
601 * should be able to avoid this with the tag setup, but
602 * that does't seem to work.
603 */
604 retry:
605 error = bus_dmamem_alloc(sc->amr_sg_dmat, (void **)&p, BUS_DMA_NOWAIT, &sc->amr_sg_dmamap);
606 if (error) {
607 device_printf(sc->amr_dev, "can't allocate s/g table\n");
608 return(ENOMEM);
609 }
610 bus_dmamap_load(sc->amr_sg_dmat, sc->amr_sg_dmamap, p, segsize, amr_sglist_helper, &sc->amr_sgbusaddr, 0);
611 if (sc->amr_sgbusaddr < 0x2000) {
612 debug(1, "s/g table too low (0x%x), reallocating\n", sc->amr_sgbusaddr);
613 goto retry;
614 }
615
616 if (AMR_IS_SG64(sc))
617 sc->amr_sg64table = (struct amr_sg64entry *)p;
618 sc->amr_sgtable = (struct amr_sgentry *)p;
619
620 return(0);
621 }
622
623 /********************************************************************************
624 * Allocate and set up mailbox areas for the controller (sc)
625 *
626 * The basic mailbox structure should be 16-byte aligned.
627 */
628 static int
629 amr_setup_mbox(struct amr_softc *sc)
630 {
631 int error;
632 void *p;
633 uint32_t baddr;
634
635 debug_called(1);
636
637 /*
638 * Create a single tag describing a region large enough to hold the entire
639 * mailbox.
640 */
641 error = bus_dma_tag_create(sc->amr_parent_dmat, /* parent */
642 16, 0, /* alignment,boundary */
643 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
644 BUS_SPACE_MAXADDR, /* highaddr */
645 NULL, NULL, /* filter, filterarg */
646 sizeof(struct amr_mailbox64), /* maxsize */
647 1, /* nsegments */
648 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
649 0, /* flags */
650 NULL, NULL, /* lockfunc, lockarg */
651 &sc->amr_mailbox_dmat);
652 if (error != 0) {
653 device_printf(sc->amr_dev, "can't allocate mailbox tag\n");
654 return(ENOMEM);
655 }
656
657 /*
658 * Allocate the mailbox structure and permanently map it into
659 * controller-visible space.
660 */
661 error = bus_dmamem_alloc(sc->amr_mailbox_dmat, (void **)&p, BUS_DMA_NOWAIT,
662 &sc->amr_mailbox_dmamap);
663 if (error) {
664 device_printf(sc->amr_dev, "can't allocate mailbox memory\n");
665 return(ENOMEM);
666 }
667 bus_dmamap_load(sc->amr_mailbox_dmat, sc->amr_mailbox_dmamap, p,
668 sizeof(struct amr_mailbox64), amr_sglist_helper, &baddr, 0);
669 /*
670 * Conventional mailbox is inside the mailbox64 region.
671 */
672 /* save physical base of the basic mailbox structure */
673 sc->amr_mailboxphys = baddr + offsetof(struct amr_mailbox64, mb);
674 bzero(p, sizeof(struct amr_mailbox64));
675 sc->amr_mailbox64 = (struct amr_mailbox64 *)p;
676 sc->amr_mailbox = &sc->amr_mailbox64->mb;
677
678 return(0);
679 }
680
681 static int
682 amr_ccb_map(struct amr_softc *sc)
683 {
684 int ccbsize, error;
685
686 /*
687 * Passthrough and Extended passthrough structures will share the same
688 * memory.
689 */
690 ccbsize = sizeof(union amr_ccb) * AMR_MAXCMD;
691 error = bus_dma_tag_create(sc->amr_parent_dmat, /* parent */
692 128, 0, /* alignment,boundary */
693 BUS_SPACE_MAXADDR_32BIT,/* lowaddr */
694 BUS_SPACE_MAXADDR, /* highaddr */
695 NULL, NULL, /* filter, filterarg */
696 ccbsize, /* maxsize */
697 1, /* nsegments */
698 ccbsize, /* maxsegsize */
699 0, /* flags */
700 NULL, NULL, /* lockfunc, lockarg */
701 &sc->amr_ccb_dmat);
702 if (error != 0) {
703 device_printf(sc->amr_dev, "can't allocate ccb tag\n");
704 return (ENOMEM);
705 }
706
707 error = bus_dmamem_alloc(sc->amr_ccb_dmat, (void **)&sc->amr_ccb,
708 BUS_DMA_NOWAIT, &sc->amr_ccb_dmamap);
709 if (error) {
710 device_printf(sc->amr_dev, "can't allocate ccb memory\n");
711 return (ENOMEM);
712 }
713 bus_dmamap_load(sc->amr_ccb_dmat, sc->amr_ccb_dmamap, sc->amr_ccb,
714 ccbsize, amr_sglist_helper, &sc->amr_ccb_busaddr, 0);
715 bzero(sc->amr_ccb, ccbsize);
716
717 return (0);
718 }
719
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