1 /* $NetBSD: isp_sbus.c,v 1.81 2012/09/07 22:37:27 macallan Exp $ */
2 /*
3 * SBus specific probe and attach routines for Qlogic ISP SCSI adapters.
4 *
5 * Copyright (C) 1997, 1998, 1999 National Aeronautics & Space Administration
6 * All rights reserved.
7 *
8 * Additional Copyright (C) 2000-2007 by Matthew Jacob
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, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. The name of the author may not be used to endorse or promote products
20 * derived from this software without specific prior written permission
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 *
33 */
34
35 #include <sys/cdefs.h>
36 __KERNEL_RCSID(0, "$NetBSD: isp_sbus.c,v 1.81 2012/09/07 22:37:27 macallan Exp $");
37
38 #include <sys/param.h>
39 #include <sys/systm.h>
40 #include <sys/device.h>
41 #include <sys/kernel.h>
42 #include <sys/malloc.h>
43 #include <sys/queue.h>
44 #include <dev/ic/isp_netbsd.h>
45 #include <sys/intr.h>
46 #include <machine/autoconf.h>
47 #include <dev/sbus/sbusvar.h>
48 #include <sys/reboot.h>
49 #include "opt_isp.h"
50
51 static void isp_sbus_reset0(ispsoftc_t *);
52 static void isp_sbus_reset1(ispsoftc_t *);
53 static int isp_sbus_intr(void *);
54 static int
55 isp_sbus_rd_isr(ispsoftc_t *, uint32_t *, uint16_t *, uint16_t *);
56 static uint32_t isp_sbus_rd_reg(ispsoftc_t *, int);
57 static void isp_sbus_wr_reg (ispsoftc_t *, int, uint32_t);
58 static int isp_sbus_mbxdma(ispsoftc_t *);
59 static int isp_sbus_dmasetup(ispsoftc_t *, XS_T *, void *);
60 static void isp_sbus_dmateardown(ispsoftc_t *, XS_T *, uint32_t);
61
62 #ifndef ISP_DISABLE_FW
63 #include <dev/microcode/isp/asm_sbus.h>
64 #else
65 #define ISP_1000_RISC_CODE NULL
66 #endif
67
68 static const struct ispmdvec mdvec = {
69 isp_sbus_rd_isr,
70 isp_sbus_rd_reg,
71 isp_sbus_wr_reg,
72 isp_sbus_mbxdma,
73 isp_sbus_dmasetup,
74 isp_sbus_dmateardown,
75 isp_sbus_reset0,
76 isp_sbus_reset1,
77 NULL,
78 ISP_1000_RISC_CODE,
79 0,
80 0
81 };
82
83 struct isp_sbussoftc {
84 ispsoftc_t sbus_isp;
85 sdparam sbus_dev;
86 struct scsipi_channel sbus_chan;
87 bus_space_tag_t sbus_bustag;
88 bus_space_handle_t sbus_reg;
89 int sbus_node;
90 int sbus_pri;
91 struct ispmdvec sbus_mdvec;
92 bus_dmamap_t *sbus_dmamap;
93 int16_t sbus_poff[_NREG_BLKS];
94 };
95
96
97 static int isp_match(device_t, cfdata_t, void *);
98 static void isp_sbus_attach(device_t, device_t, void *);
99 CFATTACH_DECL_NEW(isp_sbus, sizeof (struct isp_sbussoftc),
100 isp_match, isp_sbus_attach, NULL, NULL);
101
102 static int
isp_match(device_t parent,cfdata_t cf,void * aux)103 isp_match(device_t parent, cfdata_t cf, void *aux)
104 {
105 int rv;
106 struct sbus_attach_args *sa = aux;
107
108 rv = (strcmp(cf->cf_name, sa->sa_name) == 0 ||
109 strcmp("PTI,ptisp", sa->sa_name) == 0 ||
110 strcmp("ptisp", sa->sa_name) == 0 ||
111 strcmp("SUNW,isp", sa->sa_name) == 0 ||
112 strcmp("QLGC,isp", sa->sa_name) == 0);
113
114 return (rv);
115 }
116
117
118 static void
isp_sbus_attach(device_t parent,device_t self,void * aux)119 isp_sbus_attach(device_t parent, device_t self, void *aux)
120 {
121 int freq, ispburst, sbusburst;
122 struct sbus_attach_args *sa = aux;
123 struct isp_sbussoftc *sbc = device_private(self);
124 struct sbus_softc *sbsc = device_private(parent);
125 ispsoftc_t *isp = &sbc->sbus_isp;
126
127 isp->isp_osinfo.dev = self;
128
129 printf(" for %s\n", sa->sa_name);
130
131 isp->isp_nchan = isp->isp_osinfo.adapter.adapt_nchannels = 1;
132
133 sbc->sbus_bustag = sa->sa_bustag;
134 if (sa->sa_nintr != 0)
135 sbc->sbus_pri = sa->sa_pri;
136 sbc->sbus_mdvec = mdvec;
137
138 if (sa->sa_npromvaddrs) {
139 sbus_promaddr_to_handle(sa->sa_bustag,
140 sa->sa_promvaddrs[0], &sbc->sbus_reg);
141 } else {
142 if (sbus_bus_map(sa->sa_bustag, sa->sa_slot, sa->sa_offset,
143 sa->sa_size, 0, &sbc->sbus_reg) != 0) {
144 aprint_error_dev(self, "cannot map registers\n");
145 return;
146 }
147 }
148 sbc->sbus_node = sa->sa_node;
149
150 freq = prom_getpropint(sa->sa_node, "clock-frequency", 0);
151 if (freq) {
152 /*
153 * Convert from HZ to MHz, rounding up.
154 */
155 freq = (freq + 500000)/1000000;
156 }
157 sbc->sbus_mdvec.dv_clock = freq;
158
159 /*
160 * Now figure out what the proper burst sizes, etc., to use.
161 * Unfortunately, there is no ddi_dma_burstsizes here which
162 * walks up the tree finding the limiting burst size node (if
163 * any).
164 */
165 sbusburst = sbsc->sc_burst;
166 if (sbusburst == 0)
167 sbusburst = SBUS_BURST_32 - 1;
168 ispburst = prom_getpropint(sa->sa_node, "burst-sizes", -1);
169 if (ispburst == -1) {
170 ispburst = sbusburst;
171 }
172 ispburst &= sbusburst;
173 ispburst &= ~(1 << 7);
174 ispburst &= ~(1 << 6);
175 sbc->sbus_mdvec.dv_conf1 = 0;
176 if (ispburst & (1 << 5)) {
177 sbc->sbus_mdvec.dv_conf1 = BIU_SBUS_CONF1_FIFO_32;
178 } else if (ispburst & (1 << 4)) {
179 sbc->sbus_mdvec.dv_conf1 = BIU_SBUS_CONF1_FIFO_16;
180 } else if (ispburst & (1 << 3)) {
181 sbc->sbus_mdvec.dv_conf1 =
182 BIU_SBUS_CONF1_BURST8 | BIU_SBUS_CONF1_FIFO_8;
183 }
184 if (sbc->sbus_mdvec.dv_conf1) {
185 sbc->sbus_mdvec.dv_conf1 |= BIU_BURST_ENABLE;
186 }
187
188 isp->isp_mdvec = &sbc->sbus_mdvec;
189 isp->isp_bustype = ISP_BT_SBUS;
190 isp->isp_type = ISP_HA_SCSI_UNKNOWN;
191 isp->isp_param = &sbc->sbus_dev;
192 isp->isp_dmatag = sa->sa_dmatag;
193 ISP_MEMZERO(isp->isp_param, sizeof (sdparam));
194 isp->isp_osinfo.chan = &sbc->sbus_chan;
195
196 sbc->sbus_poff[BIU_BLOCK >> _BLK_REG_SHFT] = BIU_REGS_OFF;
197 sbc->sbus_poff[MBOX_BLOCK >> _BLK_REG_SHFT] = SBUS_MBOX_REGS_OFF;
198 sbc->sbus_poff[SXP_BLOCK >> _BLK_REG_SHFT] = SBUS_SXP_REGS_OFF;
199 sbc->sbus_poff[RISC_BLOCK >> _BLK_REG_SHFT] = SBUS_RISC_REGS_OFF;
200 sbc->sbus_poff[DMA_BLOCK >> _BLK_REG_SHFT] = DMA_REGS_OFF;
201
202 /* Establish interrupt channel */
203 bus_intr_establish(sbc->sbus_bustag, sbc->sbus_pri, IPL_BIO,
204 isp_sbus_intr, sbc);
205
206 /*
207 * Set up logging levels.
208 */
209 #ifdef ISP_LOGDEFAULT
210 isp->isp_dblev = ISP_LOGDEFAULT;
211 #else
212 isp->isp_dblev = ISP_LOGWARN|ISP_LOGERR;
213 if (bootverbose)
214 isp->isp_dblev |= ISP_LOGCONFIG|ISP_LOGINFO;
215 #ifdef SCSIDEBUG
216 isp->isp_dblev |= ISP_LOGDEBUG1|ISP_LOGDEBUG2;
217 #endif
218 #ifdef DEBUG
219 isp->isp_dblev |= ISP_LOGDEBUG0;
220 #endif
221 #endif
222
223 isp->isp_confopts = device_cfdata(self)->cf_flags;
224 SDPARAM(isp, 0)->role = ISP_DEFAULT_ROLES;
225
226 /*
227 * There's no tool on sparc to set NVRAM for ISPs, so ignore it.
228 */
229 isp->isp_confopts |= ISP_CFG_NONVRAM;
230
231 /*
232 * Mark things if we're a PTI SBus adapter.
233 */
234 if (strcmp("PTI,ptisp", sa->sa_name) == 0 ||
235 strcmp("ptisp", sa->sa_name) == 0) {
236 SDPARAM(isp, 0)->isp_ptisp = 1;
237 }
238 ISP_LOCK(isp);
239 isp_reset(isp, 1);
240 if (isp->isp_state != ISP_RESETSTATE) {
241 ISP_UNLOCK(isp);
242 return;
243 }
244 ISP_ENABLE_INTS(isp);
245 isp_init(isp);
246 if (isp->isp_state != ISP_INITSTATE) {
247 isp_uninit(isp);
248 ISP_UNLOCK(isp);
249 return;
250 }
251
252 /*
253 * do generic attach.
254 */
255 ISP_UNLOCK(isp);
256 isp_attach(isp);
257 }
258
259
260 static void
isp_sbus_reset0(ispsoftc_t * isp)261 isp_sbus_reset0(ispsoftc_t *isp)
262 {
263 ISP_DISABLE_INTS(isp);
264 }
265
266 static void
isp_sbus_reset1(ispsoftc_t * isp)267 isp_sbus_reset1(ispsoftc_t *isp)
268 {
269 ISP_ENABLE_INTS(isp);
270 }
271
272 static int
isp_sbus_intr(void * arg)273 isp_sbus_intr(void *arg)
274 {
275 uint32_t isr;
276 uint16_t sema, mbox;
277 ispsoftc_t *isp = arg;
278
279 if (ISP_READ_ISR(isp, &isr, &sema, &mbox) == 0) {
280 isp->isp_intbogus++;
281 return (0);
282 } else {
283 struct isp_sbussoftc *sbc = arg;
284 sbc->sbus_isp.isp_osinfo.onintstack = 1;
285 isp_intr(isp, isr, sema, mbox);
286 sbc->sbus_isp.isp_osinfo.onintstack = 0;
287 return (1);
288 }
289 }
290
291 #define IspVirt2Off(a, x) \
292 (((struct isp_sbussoftc *)a)->sbus_poff[((x) & _BLK_REG_MASK) >> \
293 _BLK_REG_SHFT] + ((x) & 0xff))
294
295 #define BXR2(sbc, off) \
296 bus_space_read_2(sbc->sbus_bustag, sbc->sbus_reg, off)
297
298 static int
isp_sbus_rd_isr(ispsoftc_t * isp,uint32_t * isrp,uint16_t * semap,uint16_t * mbp)299 isp_sbus_rd_isr(ispsoftc_t *isp, uint32_t *isrp,
300 uint16_t *semap, uint16_t *mbp)
301 {
302 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp;
303 uint32_t isr;
304 uint16_t sema;
305
306 isr = BXR2(sbc, IspVirt2Off(isp, BIU_ISR));
307 sema = BXR2(sbc, IspVirt2Off(isp, BIU_SEMA));
308 isp_prt(isp, ISP_LOGDEBUG3, "ISR 0x%x SEMA 0x%x", isr, sema);
309 isr &= INT_PENDING_MASK(isp);
310 sema &= BIU_SEMA_LOCK;
311 if (isr == 0 && sema == 0) {
312 return (0);
313 }
314 *isrp = isr;
315 if ((*semap = sema) != 0) {
316 *mbp = BXR2(sbc, IspVirt2Off(isp, OUTMAILBOX0));
317 }
318 return (1);
319 }
320
321 static uint32_t
isp_sbus_rd_reg(ispsoftc_t * isp,int regoff)322 isp_sbus_rd_reg(ispsoftc_t *isp, int regoff)
323 {
324 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp;
325 int offset = sbc->sbus_poff[(regoff & _BLK_REG_MASK) >> _BLK_REG_SHFT];
326 offset += (regoff & 0xff);
327 return (bus_space_read_2(sbc->sbus_bustag, sbc->sbus_reg, offset));
328 }
329
330 static void
isp_sbus_wr_reg(ispsoftc_t * isp,int regoff,uint32_t val)331 isp_sbus_wr_reg(ispsoftc_t *isp, int regoff, uint32_t val)
332 {
333 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp;
334 int offset = sbc->sbus_poff[(regoff & _BLK_REG_MASK) >> _BLK_REG_SHFT];
335 offset += (regoff & 0xff);
336 bus_space_write_2(sbc->sbus_bustag, sbc->sbus_reg, offset, val);
337 }
338
339 static int
isp_sbus_mbxdma(ispsoftc_t * isp)340 isp_sbus_mbxdma(ispsoftc_t *isp)
341 {
342 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp;
343 bus_dma_segment_t reqseg, rspseg;
344 int reqrs, rsprs, i, progress;
345 size_t n;
346 bus_size_t len;
347
348 if (isp->isp_rquest_dma)
349 return (0);
350
351 n = isp->isp_maxcmds * sizeof (isp_hdl_t);
352 isp->isp_xflist = (isp_hdl_t *) malloc(n, M_DEVBUF, M_WAITOK);
353 if (isp->isp_xflist == NULL) {
354 isp_prt(isp, ISP_LOGERR, "cannot alloc xflist array");
355 return (1);
356 }
357 ISP_MEMZERO(isp->isp_xflist, n);
358 for (n = 0; n < isp->isp_maxcmds - 1; n++) {
359 isp->isp_xflist[n].cmd = &isp->isp_xflist[n+1];
360 }
361 isp->isp_xffree = isp->isp_xflist;
362 n = sizeof (bus_dmamap_t) * isp->isp_maxcmds;
363 sbc->sbus_dmamap = (bus_dmamap_t *) malloc(n, M_DEVBUF, M_WAITOK);
364 if (sbc->sbus_dmamap == NULL) {
365 free(isp->isp_xflist, M_DEVBUF);
366 isp->isp_xflist = NULL;
367 isp_prt(isp, ISP_LOGERR, "cannot alloc dmamap array");
368 return (1);
369 }
370 for (i = 0; i < isp->isp_maxcmds; i++) {
371 /* Allocate a DMA handle */
372 if (bus_dmamap_create(isp->isp_dmatag, MAXPHYS, 1, MAXPHYS,
373 1 << 24, BUS_DMA_NOWAIT, &sbc->sbus_dmamap[i]) != 0) {
374 isp_prt(isp, ISP_LOGERR, "cmd DMA maps create error");
375 break;
376 }
377 }
378 if (i < isp->isp_maxcmds) {
379 while (--i >= 0) {
380 bus_dmamap_destroy(isp->isp_dmatag,
381 sbc->sbus_dmamap[i]);
382 }
383 free(isp->isp_xflist, M_DEVBUF);
384 free(sbc->sbus_dmamap, M_DEVBUF);
385 isp->isp_xflist = NULL;
386 sbc->sbus_dmamap = NULL;
387 return (1);
388 }
389
390 /*
391 * Allocate and map the request and response queues
392 */
393 progress = 0;
394 len = ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN(isp));
395 if (bus_dmamem_alloc(isp->isp_dmatag, len, 0, 0, &reqseg, 1, &reqrs,
396 BUS_DMA_NOWAIT)) {
397 goto dmafail;
398 }
399 progress++;
400 if (bus_dmamem_map(isp->isp_dmatag, &reqseg, reqrs, len,
401 (void *)&isp->isp_rquest, BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) {
402 goto dmafail;
403 }
404 progress++;
405 if (bus_dmamap_create(isp->isp_dmatag, len, 1, len, 1 << 24,
406 BUS_DMA_NOWAIT, &isp->isp_rqdmap) != 0) {
407 goto dmafail;
408 }
409 progress++;
410 if (bus_dmamap_load(isp->isp_dmatag, isp->isp_rqdmap,
411 isp->isp_rquest, len, NULL, BUS_DMA_NOWAIT) != 0) {
412 goto dmafail;
413 }
414 progress++;
415 isp->isp_rquest_dma = isp->isp_rqdmap->dm_segs[0].ds_addr;
416
417 len = ISP_QUEUE_SIZE(RESULT_QUEUE_LEN(isp));
418 if (bus_dmamem_alloc(isp->isp_dmatag, len, 0, 0, &rspseg, 1, &rsprs,
419 BUS_DMA_NOWAIT)) {
420 goto dmafail;
421 }
422 progress++;
423 if (bus_dmamem_map(isp->isp_dmatag, &rspseg, rsprs, len,
424 (void *)&isp->isp_result, BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) {
425 goto dmafail;
426 }
427 progress++;
428 if (bus_dmamap_create(isp->isp_dmatag, len, 1, len, 1 << 24,
429 BUS_DMA_NOWAIT, &isp->isp_rsdmap) != 0) {
430 goto dmafail;
431 }
432 progress++;
433 if (bus_dmamap_load(isp->isp_dmatag, isp->isp_rsdmap,
434 isp->isp_result, len, NULL, BUS_DMA_NOWAIT) != 0) {
435 goto dmafail;
436 }
437 isp->isp_result_dma = isp->isp_rsdmap->dm_segs[0].ds_addr;
438
439 return (0);
440
441 dmafail:
442 isp_prt(isp, ISP_LOGERR, "Mailbox DMA Setup Failure");
443
444 if (progress >= 8) {
445 bus_dmamap_unload(isp->isp_dmatag, isp->isp_rsdmap);
446 }
447 if (progress >= 7) {
448 bus_dmamap_destroy(isp->isp_dmatag, isp->isp_rsdmap);
449 }
450 if (progress >= 6) {
451 bus_dmamem_unmap(isp->isp_dmatag,
452 isp->isp_result, ISP_QUEUE_SIZE(RESULT_QUEUE_LEN(isp)));
453 }
454 if (progress >= 5) {
455 bus_dmamem_free(isp->isp_dmatag, &rspseg, rsprs);
456 }
457
458 if (progress >= 4) {
459 bus_dmamap_unload(isp->isp_dmatag, isp->isp_rqdmap);
460 }
461 if (progress >= 3) {
462 bus_dmamap_destroy(isp->isp_dmatag, isp->isp_rqdmap);
463 }
464 if (progress >= 2) {
465 bus_dmamem_unmap(isp->isp_dmatag,
466 isp->isp_rquest, ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN(isp)));
467 }
468 if (progress >= 1) {
469 bus_dmamem_free(isp->isp_dmatag, &reqseg, reqrs);
470 }
471
472 for (i = 0; i < isp->isp_maxcmds; i++) {
473 bus_dmamap_destroy(isp->isp_dmatag, sbc->sbus_dmamap[i]);
474 }
475 free(sbc->sbus_dmamap, M_DEVBUF);
476 free(isp->isp_xflist, M_DEVBUF);
477 isp->isp_xflist = NULL;
478 sbc->sbus_dmamap = NULL;
479 return (1);
480 }
481
482 /*
483 * Map a DMA request.
484 * We're guaranteed that rq->req_handle is a value from 1 to isp->isp_maxcmds.
485 */
486
487 static int
isp_sbus_dmasetup(struct ispsoftc * isp,struct scsipi_xfer * xs,void * arg)488 isp_sbus_dmasetup(struct ispsoftc *isp, struct scsipi_xfer *xs, void *arg)
489 {
490 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *)isp;
491 ispreq_t *rq = arg;
492 bus_dmamap_t dmap;
493 bus_dma_segment_t *dm_segs;
494 uint32_t nsegs, hidx;
495 isp_ddir_t ddir;
496
497 hidx = isp_handle_index(isp, rq->req_handle);
498 if (hidx == ISP_BAD_HANDLE_INDEX) {
499 XS_SETERR(xs, HBA_BOTCH);
500 return (CMD_COMPLETE);
501 }
502 dmap = sbc->sbus_dmamap[hidx];
503 if (xs->datalen == 0) {
504 ddir = ISP_NOXFR;
505 nsegs = 0;
506 dm_segs = NULL;
507 } else {
508 int error;
509 uint32_t flag, flg2;
510
511 if (xs->xs_control & XS_CTL_DATA_IN) {
512 flg2 = BUS_DMASYNC_PREREAD;
513 flag = BUS_DMA_READ;
514 ddir = ISP_FROM_DEVICE;
515 } else {
516 flg2 = BUS_DMASYNC_PREWRITE;
517 flag = BUS_DMA_WRITE;
518 ddir = ISP_TO_DEVICE;
519 }
520 error = bus_dmamap_load(isp->isp_dmatag, dmap, xs->data, xs->datalen,
521 NULL, ((xs->xs_control & XS_CTL_NOSLEEP) ? BUS_DMA_NOWAIT : BUS_DMA_WAITOK) | BUS_DMA_STREAMING | flag);
522 if (error) {
523 isp_prt(isp, ISP_LOGWARN, "unable to load DMA (%d)", error);
524 XS_SETERR(xs, HBA_BOTCH);
525 if (error == EAGAIN || error == ENOMEM) {
526 return (CMD_EAGAIN);
527 } else {
528 return (CMD_COMPLETE);
529 }
530 }
531 dm_segs = dmap->dm_segs;
532 nsegs = dmap->dm_nsegs;
533 bus_dmamap_sync(isp->isp_dmatag, dmap, 0, dmap->dm_mapsize, flg2);
534 }
535
536 if (isp_send_cmd(isp, rq, dm_segs, nsegs, xs->datalen, ddir) != CMD_QUEUED) {
537 return (CMD_EAGAIN);
538 } else {
539 return (CMD_QUEUED);
540 }
541 }
542
543 static void
isp_sbus_dmateardown(ispsoftc_t * isp,XS_T * xs,uint32_t handle)544 isp_sbus_dmateardown(ispsoftc_t *isp, XS_T *xs, uint32_t handle)
545 {
546 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp;
547 bus_dmamap_t dmap;
548 uint32_t hidx;
549
550 hidx = isp_handle_index(isp, handle);
551 if (hidx == ISP_BAD_HANDLE_INDEX) {
552 isp_xs_prt(isp, xs, ISP_LOGERR, "bad handle on teardown");
553 return;
554 }
555 dmap = sbc->sbus_dmamap[hidx];
556 bus_dmamap_sync(isp->isp_dmatag, dmap, 0,
557 xs->datalen, (xs->xs_control & XS_CTL_DATA_IN)?
558 BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE);
559 bus_dmamap_unload(isp->isp_dmatag, dmap);
560 }
561