Annotation of sys/dev/sbus/isp_sbus.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: isp_sbus.c,v 1.8 2006/06/02 20:00:56 miod Exp $ */
! 2: /* $NetBSD: isp_sbus.c,v 1.46 2001/09/26 20:53:14 eeh Exp $ */
! 3:
! 4: /*
! 5: * This driver, which is contained in NetBSD in the files:
! 6: *
! 7: * sys/dev/ic/isp.c
! 8: * sys/dev/ic/isp_inline.h
! 9: * sys/dev/ic/isp_netbsd.c
! 10: * sys/dev/ic/isp_netbsd.h
! 11: * sys/dev/ic/isp_target.c
! 12: * sys/dev/ic/isp_target.h
! 13: * sys/dev/ic/isp_tpublic.h
! 14: * sys/dev/ic/ispmbox.h
! 15: * sys/dev/ic/ispreg.h
! 16: * sys/dev/ic/ispvar.h
! 17: * sys/microcode/isp/asm_sbus.h
! 18: * sys/microcode/isp/asm_1040.h
! 19: * sys/microcode/isp/asm_1080.h
! 20: * sys/microcode/isp/asm_12160.h
! 21: * sys/microcode/isp/asm_2100.h
! 22: * sys/microcode/isp/asm_2200.h
! 23: * sys/pci/isp_pci.c
! 24: * sys/sbus/isp_sbus.c
! 25: *
! 26: * Is being actively maintained by Matthew Jacob (mjacob@netbsd.org).
! 27: * This driver also is shared source with FreeBSD, OpenBSD, Linux, Solaris,
! 28: * Linux versions. This tends to be an interesting maintenance problem.
! 29: *
! 30: * Please coordinate with Matthew Jacob on changes you wish to make here.
! 31: */
! 32: /*
! 33: * SBus specific probe and attach routines for Qlogic ISP SCSI adapters.
! 34: *
! 35: * Copyright (c) 1997, 2001 by Matthew Jacob
! 36: * NASA AMES Research Center
! 37: * All rights reserved.
! 38: *
! 39: * Redistribution and use in source and binary forms, with or without
! 40: * modification, are permitted provided that the following conditions
! 41: * are met:
! 42: * 1. Redistributions of source code must retain the above copyright
! 43: * notice immediately at the beginning of the file, without modification,
! 44: * this list of conditions, and the following disclaimer.
! 45: * 2. Redistributions in binary form must reproduce the above copyright
! 46: * notice, this list of conditions and the following disclaimer in the
! 47: * documentation and/or other materials provided with the distribution.
! 48: *
! 49: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
! 50: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 51: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 52: * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
! 53: * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 54: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 55: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 56: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 57: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 58: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 59: * SUCH DAMAGE.
! 60: *
! 61: */
! 62:
! 63: #include <sys/param.h>
! 64: #include <sys/systm.h>
! 65: #include <sys/device.h>
! 66: #include <sys/kernel.h>
! 67: #include <sys/malloc.h>
! 68: #include <sys/queue.h>
! 69:
! 70: #include <machine/bus.h>
! 71: #include <machine/intr.h>
! 72: #include <machine/autoconf.h>
! 73:
! 74: #include <dev/ic/isp_openbsd.h>
! 75: #if defined(ISP_COMPILE_FW) || defined(ISP_COMPILE_1000_FW)
! 76: #include <dev/microcode/isp/asm_sbus.h>
! 77: #endif
! 78: #include <dev/sbus/sbusvar.h>
! 79: #include <sys/reboot.h>
! 80:
! 81: static int isp_sbus_intr(void *);
! 82: static int
! 83: isp_sbus_rd_isr(struct ispsoftc *, u_int16_t *, u_int16_t *, u_int16_t *);
! 84: static u_int16_t isp_sbus_rd_reg(struct ispsoftc *, int);
! 85: static void isp_sbus_wr_reg (struct ispsoftc *, int, u_int16_t);
! 86: static int isp_sbus_mbxdma(struct ispsoftc *);
! 87: static int isp_sbus_dmasetup(struct ispsoftc *, XS_T *, ispreq_t *, u_int16_t *,
! 88: u_int16_t);
! 89: static void isp_sbus_dmateardown(struct ispsoftc *, XS_T *, u_int16_t);
! 90:
! 91: #ifndef ISP_1000_RISC_CODE
! 92: #define ISP_1000_RISC_CODE NULL
! 93: #endif
! 94:
! 95: static struct ispmdvec mdvec = {
! 96: isp_sbus_rd_isr,
! 97: isp_sbus_rd_reg,
! 98: isp_sbus_wr_reg,
! 99: isp_sbus_mbxdma,
! 100: isp_sbus_dmasetup,
! 101: isp_sbus_dmateardown,
! 102: NULL,
! 103: NULL,
! 104: NULL,
! 105: (u_int16_t *) ISP_1000_RISC_CODE
! 106: };
! 107:
! 108: struct isp_sbussoftc {
! 109: struct ispsoftc sbus_isp;
! 110: sdparam sbus_dev;
! 111: bus_space_tag_t sbus_bustag;
! 112: bus_space_handle_t sbus_reg;
! 113: int sbus_node;
! 114: int sbus_pri;
! 115: struct ispmdvec sbus_mdvec;
! 116: bus_dmamap_t *sbus_dmamap;
! 117: int16_t sbus_poff[_NREG_BLKS];
! 118: };
! 119:
! 120:
! 121: static int isp_match(struct device *, void *, void *);
! 122: static void isp_sbus_attach(struct device *, struct device *, void *);
! 123: struct cfattach isp_sbus_ca = {
! 124: sizeof (struct isp_sbussoftc), isp_match, isp_sbus_attach
! 125: };
! 126:
! 127: static int
! 128: isp_match(struct device *parent, void *vcf, void *aux)
! 129: {
! 130: struct cfdata *cf = vcf;
! 131: int rv;
! 132: #ifdef DEBUG
! 133: static int oneshot = 1;
! 134: #endif
! 135: struct sbus_attach_args *sa = aux;
! 136:
! 137: rv = (strcmp(cf->cf_driver->cd_name, sa->sa_name) == 0 ||
! 138: strcmp("PTI,ptisp", sa->sa_name) == 0 ||
! 139: strcmp("ptisp", sa->sa_name) == 0 ||
! 140: strcmp("SUNW,isp", sa->sa_name) == 0 ||
! 141: strcmp("QLGC,isp", sa->sa_name) == 0);
! 142: #ifdef DEBUG
! 143: if (rv && oneshot) {
! 144: oneshot = 0;
! 145: printf("Qlogic ISP Driver, NetBSD (sbus) Platform Version "
! 146: "%d.%d Core Version %d.%d\n",
! 147: ISP_PLATFORM_VERSION_MAJOR, ISP_PLATFORM_VERSION_MINOR,
! 148: ISP_CORE_VERSION_MAJOR, ISP_CORE_VERSION_MINOR);
! 149: }
! 150: #endif
! 151: return (rv);
! 152: }
! 153:
! 154:
! 155: static void
! 156: isp_sbus_attach(struct device *parent, struct device *self, void *aux)
! 157: {
! 158: int freq, ispburst, sbusburst;
! 159: struct sbus_attach_args *sa = aux;
! 160: struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) self;
! 161: struct ispsoftc *isp = &sbc->sbus_isp;
! 162:
! 163: printf(": %s\n", sa->sa_name);
! 164:
! 165: sbc->sbus_bustag = sa->sa_bustag;
! 166: if (sa->sa_nintr != 0)
! 167: sbc->sbus_pri = sa->sa_pri;
! 168: sbc->sbus_mdvec = mdvec;
! 169:
! 170: if (sa->sa_npromvaddrs != 0) {
! 171: if (bus_space_map(sa->sa_bustag, sa->sa_promvaddrs[0],
! 172: sa->sa_size,
! 173: BUS_SPACE_MAP_PROMADDRESS | BUS_SPACE_MAP_LINEAR,
! 174: &sbc->sbus_reg) == 0) {
! 175: printf("%s: cannot map registers\n", self->dv_xname);
! 176: return;
! 177: }
! 178: } else {
! 179: if (sbus_bus_map(sa->sa_bustag, sa->sa_slot, sa->sa_offset,
! 180: sa->sa_size, BUS_SPACE_MAP_LINEAR, 0,
! 181: &sbc->sbus_reg) != 0) {
! 182: printf("%s: cannot map registers\n", self->dv_xname);
! 183: return;
! 184: }
! 185: }
! 186: sbc->sbus_node = sa->sa_node;
! 187:
! 188: freq = getpropint(sa->sa_node, "clock-frequency", 0);
! 189: if (freq) {
! 190: /*
! 191: * Convert from HZ to MHz, rounding up.
! 192: */
! 193: freq = (freq + 500000)/1000000;
! 194: #if 0
! 195: printf("%s: %d MHz\n", self->dv_xname, freq);
! 196: #endif
! 197: }
! 198: sbc->sbus_mdvec.dv_clock = freq;
! 199:
! 200: /*
! 201: * Now figure out what the proper burst sizes, etc., to use.
! 202: * Unfortunately, there is no ddi_dma_burstsizes here which
! 203: * walks up the tree finding the limiting burst size node (if
! 204: * any).
! 205: */
! 206: sbusburst = ((struct sbus_softc *)parent)->sc_burst;
! 207: if (sbusburst == 0)
! 208: sbusburst = SBUS_BURST_32 - 1;
! 209: ispburst = getpropint(sa->sa_node, "burst-sizes", -1);
! 210: if (ispburst == -1) {
! 211: ispburst = sbusburst;
! 212: }
! 213: ispburst &= sbusburst;
! 214: ispburst &= ~(1 << 7);
! 215: ispburst &= ~(1 << 6);
! 216: sbc->sbus_mdvec.dv_conf1 = 0;
! 217: if (ispburst & (1 << 5)) {
! 218: sbc->sbus_mdvec.dv_conf1 = BIU_SBUS_CONF1_FIFO_32;
! 219: } else if (ispburst & (1 << 4)) {
! 220: sbc->sbus_mdvec.dv_conf1 = BIU_SBUS_CONF1_FIFO_16;
! 221: } else if (ispburst & (1 << 3)) {
! 222: sbc->sbus_mdvec.dv_conf1 =
! 223: BIU_SBUS_CONF1_BURST8 | BIU_SBUS_CONF1_FIFO_8;
! 224: }
! 225: if (sbc->sbus_mdvec.dv_conf1) {
! 226: sbc->sbus_mdvec.dv_conf1 |= BIU_BURST_ENABLE;
! 227: }
! 228:
! 229: /*
! 230: * Some early versions of the PTI SBus adapter
! 231: * would fail in trying to download (via poking)
! 232: * FW. We give up on them.
! 233: */
! 234: if (strcmp("PTI,ptisp", sa->sa_name) == 0 ||
! 235: strcmp("ptisp", sa->sa_name) == 0) {
! 236: sbc->sbus_mdvec.dv_ispfw = NULL;
! 237: }
! 238:
! 239: isp->isp_mdvec = &sbc->sbus_mdvec;
! 240: isp->isp_bustype = ISP_BT_SBUS;
! 241: isp->isp_type = ISP_HA_SCSI_UNKNOWN;
! 242: isp->isp_param = &sbc->sbus_dev;
! 243: isp->isp_dmatag = sa->sa_dmatag;
! 244: MEMZERO(isp->isp_param, sizeof (sdparam));
! 245:
! 246: sbc->sbus_poff[BIU_BLOCK >> _BLK_REG_SHFT] = BIU_REGS_OFF;
! 247: sbc->sbus_poff[MBOX_BLOCK >> _BLK_REG_SHFT] = SBUS_MBOX_REGS_OFF;
! 248: sbc->sbus_poff[SXP_BLOCK >> _BLK_REG_SHFT] = SBUS_SXP_REGS_OFF;
! 249: sbc->sbus_poff[RISC_BLOCK >> _BLK_REG_SHFT] = SBUS_RISC_REGS_OFF;
! 250: sbc->sbus_poff[DMA_BLOCK >> _BLK_REG_SHFT] = DMA_REGS_OFF;
! 251:
! 252: /* Establish interrupt channel */
! 253: bus_intr_establish(sbc->sbus_bustag, sbc->sbus_pri, IPL_BIO, 0,
! 254: isp_sbus_intr, sbc, self->dv_xname);
! 255:
! 256: /*
! 257: * Set up logging levels.
! 258: */
! 259: #ifdef ISP_LOGDEFAULT
! 260: isp->isp_dblev = ISP_LOGDEFAULT;
! 261: #else
! 262: isp->isp_dblev = ISP_LOGWARN|ISP_LOGERR;
! 263: #ifdef SCSIDEBUG
! 264: isp->isp_dblev |= ISP_LOGDEBUG1|ISP_LOGDEBUG2;
! 265: #endif
! 266: #ifdef DEBUG
! 267: isp->isp_dblev |= ISP_LOGDEBUG0|ISP_LOGCONFIG|ISP_LOGINFO;
! 268: #endif
! 269: #endif
! 270:
! 271: isp->isp_confopts = self->dv_cfdata->cf_flags;
! 272: isp->isp_role = ISP_DEFAULT_ROLES;
! 273:
! 274: /*
! 275: * There's no tool on sparc to set NVRAM for ISPs, so ignore it.
! 276: */
! 277: isp->isp_confopts |= ISP_CFG_NONVRAM;
! 278: ISP_LOCK(isp);
! 279: isp->isp_osinfo.no_mbox_ints = 1;
! 280: isp_reset(isp);
! 281: if (isp->isp_state != ISP_RESETSTATE) {
! 282: ISP_UNLOCK(isp);
! 283: return;
! 284: }
! 285: ENABLE_INTS(isp);
! 286: isp_init(isp);
! 287: if (isp->isp_state != ISP_INITSTATE) {
! 288: isp_uninit(isp);
! 289: ISP_UNLOCK(isp);
! 290: return;
! 291: }
! 292:
! 293: /*
! 294: * do generic attach.
! 295: */
! 296: ISP_UNLOCK(isp);
! 297: isp_attach(isp);
! 298: if (isp->isp_state != ISP_RUNSTATE) {
! 299: ISP_LOCK(isp);
! 300: isp_uninit(isp);
! 301: ISP_UNLOCK(isp);
! 302: }
! 303: }
! 304:
! 305: static int
! 306: isp_sbus_intr(void *arg)
! 307: {
! 308: u_int16_t isr, sema, mbox;
! 309: struct ispsoftc *isp = arg;
! 310:
! 311: isp->isp_intcnt++;
! 312: if (ISP_READ_ISR(isp, &isr, &sema, &mbox) == 0) {
! 313: isp->isp_intbogus++;
! 314: return (0);
! 315: } else {
! 316: isp->isp_osinfo.onintstack = 1;
! 317: isp_intr(isp, isr, sema, mbox);
! 318: isp->isp_osinfo.onintstack = 0;
! 319: return (1);
! 320: }
! 321: }
! 322:
! 323: #define IspVirt2Off(a, x) \
! 324: (((struct isp_sbussoftc *)a)->sbus_poff[((x) & _BLK_REG_MASK) >> \
! 325: _BLK_REG_SHFT] + ((x) & 0xff))
! 326:
! 327: #define BXR2(sbc, off) \
! 328: bus_space_read_2(sbc->sbus_bustag, sbc->sbus_reg, off)
! 329:
! 330: static int
! 331: isp_sbus_rd_isr(struct ispsoftc *isp, u_int16_t *isrp,
! 332: u_int16_t *semap, u_int16_t *mbp)
! 333: {
! 334: struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp;
! 335: u_int16_t isr, sema;
! 336:
! 337: isr = BXR2(sbc, IspVirt2Off(isp, BIU_ISR));
! 338: sema = BXR2(sbc, IspVirt2Off(isp, BIU_SEMA));
! 339: isp_prt(isp, ISP_LOGDEBUG3, "ISR 0x%x SEMA 0x%x", isr, sema);
! 340: isr &= INT_PENDING_MASK(isp);
! 341: sema &= BIU_SEMA_LOCK;
! 342: if (isr == 0 && sema == 0) {
! 343: return (0);
! 344: }
! 345: *isrp = isr;
! 346: if ((*semap = sema) != 0) {
! 347: *mbp = BXR2(sbc, IspVirt2Off(isp, OUTMAILBOX0));
! 348: }
! 349: return (1);
! 350: }
! 351:
! 352: static u_int16_t
! 353: isp_sbus_rd_reg(struct ispsoftc *isp, int regoff)
! 354: {
! 355: struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp;
! 356: int offset = sbc->sbus_poff[(regoff & _BLK_REG_MASK) >> _BLK_REG_SHFT];
! 357: offset += (regoff & 0xff);
! 358: return (bus_space_read_2(sbc->sbus_bustag, sbc->sbus_reg, offset));
! 359: }
! 360:
! 361: static void
! 362: isp_sbus_wr_reg(struct ispsoftc *isp, int regoff, u_int16_t val)
! 363: {
! 364: struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp;
! 365: int offset = sbc->sbus_poff[(regoff & _BLK_REG_MASK) >> _BLK_REG_SHFT];
! 366: offset += (regoff & 0xff);
! 367: bus_space_write_2(sbc->sbus_bustag, sbc->sbus_reg, offset, val);
! 368: }
! 369:
! 370: static int
! 371: isp_sbus_mbxdma(struct ispsoftc *isp)
! 372: {
! 373: struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp;
! 374: bus_dma_segment_t reqseg, rspseg;
! 375: int reqrs, rsprs, i, progress;
! 376: size_t n;
! 377: bus_size_t len;
! 378:
! 379: if (isp->isp_rquest_dma)
! 380: return (0);
! 381:
! 382: n = isp->isp_maxcmds * sizeof (XS_T *);
! 383: isp->isp_xflist = (XS_T **) malloc(n, M_DEVBUF, M_WAITOK);
! 384: if (isp->isp_xflist == NULL) {
! 385: isp_prt(isp, ISP_LOGERR, "cannot alloc xflist array");
! 386: return (1);
! 387: }
! 388: MEMZERO(isp->isp_xflist, n);
! 389: n = sizeof (bus_dmamap_t) * isp->isp_maxcmds;
! 390: sbc->sbus_dmamap = (bus_dmamap_t *) malloc(n, M_DEVBUF, M_WAITOK);
! 391: if (sbc->sbus_dmamap == NULL) {
! 392: free(isp->isp_xflist, M_DEVBUF);
! 393: isp->isp_xflist = NULL;
! 394: isp_prt(isp, ISP_LOGERR, "cannot alloc dmamap array");
! 395: return (1);
! 396: }
! 397: for (i = 0; i < isp->isp_maxcmds; i++) {
! 398: /* Allocate a DMA handle */
! 399: if (bus_dmamap_create(isp->isp_dmatag, MAXPHYS, 1, MAXPHYS, 0,
! 400: BUS_DMA_NOWAIT, &sbc->sbus_dmamap[i]) != 0) {
! 401: isp_prt(isp, ISP_LOGERR, "cmd DMA maps create error");
! 402: break;
! 403: }
! 404: }
! 405: if (i < isp->isp_maxcmds) {
! 406: while (--i >= 0) {
! 407: bus_dmamap_destroy(isp->isp_dmatag,
! 408: sbc->sbus_dmamap[i]);
! 409: }
! 410: free(isp->isp_xflist, M_DEVBUF);
! 411: free(sbc->sbus_dmamap, M_DEVBUF);
! 412: isp->isp_xflist = NULL;
! 413: sbc->sbus_dmamap = NULL;
! 414: return (1);
! 415: }
! 416:
! 417: /*
! 418: * Allocate and map the request and response queues
! 419: */
! 420: progress = 0;
! 421: len = ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN(isp));
! 422: if (bus_dmamem_alloc(isp->isp_dmatag, len, 0, 0, &reqseg, 1, &reqrs,
! 423: BUS_DMA_NOWAIT)) {
! 424: goto dmafail;
! 425: }
! 426: progress++;
! 427: if (bus_dmamem_map(isp->isp_dmatag, &reqseg, reqrs, len,
! 428: (caddr_t *)&isp->isp_rquest, BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) {
! 429: goto dmafail;
! 430: }
! 431: progress++;
! 432: if (bus_dmamap_create(isp->isp_dmatag, len, 1, len, 0, BUS_DMA_NOWAIT,
! 433: &isp->isp_rqdmap) != 0) {
! 434: goto dmafail;
! 435: }
! 436: progress++;
! 437: if (bus_dmamap_load(isp->isp_dmatag, isp->isp_rqdmap,
! 438: isp->isp_rquest, len, NULL, BUS_DMA_NOWAIT) != 0) {
! 439: goto dmafail;
! 440: }
! 441: progress++;
! 442: isp->isp_rquest_dma = isp->isp_rqdmap->dm_segs[0].ds_addr;
! 443:
! 444: len = ISP_QUEUE_SIZE(RESULT_QUEUE_LEN(isp));
! 445: if (bus_dmamem_alloc(isp->isp_dmatag, len, 0, 0, &rspseg, 1, &rsprs,
! 446: BUS_DMA_NOWAIT)) {
! 447: goto dmafail;
! 448: }
! 449: progress++;
! 450: if (bus_dmamem_map(isp->isp_dmatag, &rspseg, rsprs, len,
! 451: (caddr_t *)&isp->isp_result, BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) {
! 452: goto dmafail;
! 453: }
! 454: progress++;
! 455: if (bus_dmamap_create(isp->isp_dmatag, len, 1, len, 0, BUS_DMA_NOWAIT,
! 456: &isp->isp_rsdmap) != 0) {
! 457: goto dmafail;
! 458: }
! 459: progress++;
! 460: if (bus_dmamap_load(isp->isp_dmatag, isp->isp_rsdmap,
! 461: isp->isp_result, len, NULL, BUS_DMA_NOWAIT) != 0) {
! 462: goto dmafail;
! 463: }
! 464: isp->isp_result_dma = isp->isp_rsdmap->dm_segs[0].ds_addr;
! 465:
! 466: return (0);
! 467:
! 468: dmafail:
! 469: isp_prt(isp, ISP_LOGERR, "Mailbox DMA Setup Failure");
! 470:
! 471: if (progress >= 8) {
! 472: bus_dmamap_unload(isp->isp_dmatag, isp->isp_rsdmap);
! 473: }
! 474: if (progress >= 7) {
! 475: bus_dmamap_destroy(isp->isp_dmatag, isp->isp_rsdmap);
! 476: }
! 477: if (progress >= 6) {
! 478: bus_dmamem_unmap(isp->isp_dmatag,
! 479: isp->isp_result, ISP_QUEUE_SIZE(RESULT_QUEUE_LEN(isp)));
! 480: }
! 481: if (progress >= 5) {
! 482: bus_dmamem_free(isp->isp_dmatag, &rspseg, rsprs);
! 483: }
! 484:
! 485: if (progress >= 4) {
! 486: bus_dmamap_unload(isp->isp_dmatag, isp->isp_rqdmap);
! 487: }
! 488: if (progress >= 3) {
! 489: bus_dmamap_destroy(isp->isp_dmatag, isp->isp_rqdmap);
! 490: }
! 491: if (progress >= 2) {
! 492: bus_dmamem_unmap(isp->isp_dmatag,
! 493: isp->isp_rquest, ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN(isp)));
! 494: }
! 495: if (progress >= 1) {
! 496: bus_dmamem_free(isp->isp_dmatag, &reqseg, reqrs);
! 497: }
! 498:
! 499: for (i = 0; i < isp->isp_maxcmds; i++) {
! 500: bus_dmamap_destroy(isp->isp_dmatag, sbc->sbus_dmamap[i]);
! 501: }
! 502: free(sbc->sbus_dmamap, M_DEVBUF);
! 503: free(isp->isp_xflist, M_DEVBUF);
! 504: isp->isp_xflist = NULL;
! 505: sbc->sbus_dmamap = NULL;
! 506: return (1);
! 507: }
! 508:
! 509: /*
! 510: * Map a DMA request.
! 511: * We're guaranteed that rq->req_handle is a value from 1 to isp->isp_maxcmds.
! 512: */
! 513:
! 514: static int
! 515: isp_sbus_dmasetup(struct ispsoftc *isp, XS_T *xs, ispreq_t *rq,
! 516: u_int16_t *nxtip, u_int16_t optr)
! 517: {
! 518: struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp;
! 519: bus_dmamap_t dmap;
! 520: ispreq_t *qep;
! 521: int cansleep = (xs->flags & SCSI_NOSLEEP) == 0;
! 522: int in = (xs->flags & SCSI_DATA_IN) != 0;
! 523:
! 524: qep = (ispreq_t *) ISP_QUEUE_ENTRY(isp->isp_rquest, isp->isp_reqidx);
! 525: if (xs->datalen == 0) {
! 526: rq->req_seg_count = 1;
! 527: goto mbxsync;
! 528: }
! 529:
! 530: dmap = sbc->sbus_dmamap[isp_handle_index(rq->req_handle)];
! 531: if (dmap->dm_nsegs != 0) {
! 532: panic("%s: dma map already allocated", isp->isp_name);
! 533: /* NOTREACHED */
! 534: }
! 535: if (bus_dmamap_load(isp->isp_dmatag, dmap, xs->data, xs->datalen,
! 536: NULL, (cansleep ? BUS_DMA_WAITOK : BUS_DMA_NOWAIT) |
! 537: BUS_DMA_STREAMING) != 0) {
! 538: XS_SETERR(xs, HBA_BOTCH);
! 539: return (CMD_COMPLETE);
! 540: }
! 541:
! 542: bus_dmamap_sync(isp->isp_dmatag, dmap, 0, xs->datalen,
! 543: in? BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE);
! 544:
! 545: if (in) {
! 546: rq->req_flags |= REQFLAG_DATA_IN;
! 547: } else {
! 548: rq->req_flags |= REQFLAG_DATA_OUT;
! 549: }
! 550:
! 551: if (XS_CDBLEN(xs) > 12) {
! 552: u_int16_t onxti;
! 553: ispcontreq_t local, *crq = &local, *cqe;
! 554:
! 555: onxti = *nxtip;
! 556: cqe = (ispcontreq_t *) ISP_QUEUE_ENTRY(isp->isp_rquest, onxti);
! 557: *nxtip = ISP_NXT_QENTRY(onxti, RQUEST_QUEUE_LEN(isp));
! 558: if (*nxtip == optr) {
! 559: isp_prt(isp, ISP_LOGDEBUG0, "Request Queue Overflow++");
! 560: bus_dmamap_unload(isp->isp_dmatag, dmap);
! 561: XS_SETERR(xs, HBA_BOTCH);
! 562: return (CMD_EAGAIN);
! 563: }
! 564: rq->req_seg_count = 2;
! 565: MEMZERO((void *)crq, sizeof (*crq));
! 566: crq->req_header.rqs_entry_count = 1;
! 567: crq->req_header.rqs_entry_type = RQSTYPE_DATASEG;
! 568: crq->req_dataseg[0].ds_count = xs->datalen;
! 569: crq->req_dataseg[0].ds_base = dmap->dm_segs[0].ds_addr;
! 570: isp_put_cont_req(isp, crq, cqe);
! 571: MEMORYBARRIER(isp, SYNC_REQUEST, onxti, QENTRY_LEN);
! 572: } else {
! 573: rq->req_seg_count = 1;
! 574: rq->req_dataseg[0].ds_count = xs->datalen;
! 575: rq->req_dataseg[0].ds_base = dmap->dm_segs[0].ds_addr;
! 576: }
! 577:
! 578: mbxsync:
! 579: if (XS_CDBLEN(xs) > 12) {
! 580: isp_put_extended_request(isp,
! 581: (ispextreq_t *)rq, (ispextreq_t *) qep);
! 582: } else {
! 583: isp_put_request(isp, rq, qep);
! 584: }
! 585: return (CMD_QUEUED);
! 586: }
! 587:
! 588: static void
! 589: isp_sbus_dmateardown(struct ispsoftc *isp, XS_T *xs, u_int16_t handle)
! 590: {
! 591: struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp;
! 592: bus_dmamap_t dmap;
! 593:
! 594: dmap = sbc->sbus_dmamap[isp_handle_index(handle)];
! 595:
! 596: if (dmap->dm_nsegs == 0) {
! 597: panic("%s: dma map not already allocated", isp->isp_name);
! 598: /* NOTREACHED */
! 599: }
! 600: bus_dmamap_sync(isp->isp_dmatag, dmap, 0,
! 601: xs->datalen, (xs->flags & SCSI_DATA_IN)?
! 602: BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE);
! 603: bus_dmamap_unload(isp->isp_dmatag, dmap);
! 604: }
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