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siop_common.c revision 1.37.10.1
      1  1.37.10.1     yamt /*	$NetBSD: siop_common.c,v 1.37.10.1 2005/11/29 21:23:08 yamt Exp $	*/
      2        1.1   bouyer 
      3        1.1   bouyer /*
      4       1.22   bouyer  * Copyright (c) 2000, 2002 Manuel Bouyer.
      5        1.1   bouyer  *
      6        1.1   bouyer  * Redistribution and use in source and binary forms, with or without
      7        1.1   bouyer  * modification, are permitted provided that the following conditions
      8        1.1   bouyer  * are met:
      9        1.1   bouyer  * 1. Redistributions of source code must retain the above copyright
     10        1.1   bouyer  *    notice, this list of conditions and the following disclaimer.
     11        1.1   bouyer  * 2. Redistributions in binary form must reproduce the above copyright
     12        1.1   bouyer  *    notice, this list of conditions and the following disclaimer in the
     13        1.1   bouyer  *    documentation and/or other materials provided with the distribution.
     14        1.1   bouyer  * 3. All advertising materials mentioning features or use of this software
     15        1.1   bouyer  *    must display the following acknowledgement:
     16       1.23   bouyer  *	This product includes software developed by Manuel Bouyer.
     17        1.1   bouyer  * 4. The name of the author may not be used to endorse or promote products
     18        1.1   bouyer  *    derived from this software without specific prior written permission.
     19        1.1   bouyer  *
     20        1.1   bouyer  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     21        1.1   bouyer  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     22        1.1   bouyer  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     23       1.37    perry  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     24        1.1   bouyer  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     25        1.1   bouyer  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     26        1.1   bouyer  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     27        1.1   bouyer  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     28        1.1   bouyer  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     29        1.1   bouyer  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     30        1.1   bouyer  *
     31        1.1   bouyer  */
     32        1.1   bouyer 
     33        1.1   bouyer /* SYM53c7/8xx PCI-SCSI I/O Processors driver */
     34       1.15    lukem 
     35       1.15    lukem #include <sys/cdefs.h>
     36  1.37.10.1     yamt __KERNEL_RCSID(0, "$NetBSD: siop_common.c,v 1.37.10.1 2005/11/29 21:23:08 yamt Exp $");
     37        1.1   bouyer 
     38        1.1   bouyer #include <sys/param.h>
     39        1.1   bouyer #include <sys/systm.h>
     40        1.1   bouyer #include <sys/device.h>
     41        1.1   bouyer #include <sys/malloc.h>
     42        1.1   bouyer #include <sys/buf.h>
     43        1.1   bouyer #include <sys/kernel.h>
     44        1.1   bouyer #include <sys/scsiio.h>
     45        1.1   bouyer 
     46       1.22   bouyer #include <uvm/uvm_extern.h>
     47       1.22   bouyer 
     48        1.1   bouyer #include <machine/endian.h>
     49        1.1   bouyer #include <machine/bus.h>
     50        1.1   bouyer 
     51        1.1   bouyer #include <dev/scsipi/scsi_all.h>
     52        1.1   bouyer #include <dev/scsipi/scsi_message.h>
     53        1.1   bouyer #include <dev/scsipi/scsipi_all.h>
     54        1.1   bouyer 
     55        1.1   bouyer #include <dev/scsipi/scsiconf.h>
     56        1.1   bouyer 
     57        1.1   bouyer #include <dev/ic/siopreg.h>
     58        1.1   bouyer #include <dev/ic/siopvar_common.h>
     59        1.1   bouyer 
     60       1.16   bouyer #include "opt_siop.h"
     61       1.16   bouyer 
     62        1.2   bouyer #undef DEBUG
     63        1.2   bouyer #undef DEBUG_DR
     64       1.22   bouyer #undef DEBUG_NEG
     65       1.22   bouyer 
     66       1.22   bouyer int
     67       1.22   bouyer siop_common_attach(sc)
     68       1.22   bouyer 	struct siop_common_softc *sc;
     69       1.22   bouyer {
     70       1.22   bouyer 	int error, i;
     71       1.22   bouyer 	bus_dma_segment_t seg;
     72       1.22   bouyer 	int rseg;
     73       1.22   bouyer 
     74       1.22   bouyer 	/*
     75       1.22   bouyer 	 * Allocate DMA-safe memory for the script and map it.
     76       1.22   bouyer 	 */
     77       1.22   bouyer 	if ((sc->features & SF_CHIP_RAM) == 0) {
     78       1.37    perry 		error = bus_dmamem_alloc(sc->sc_dmat, PAGE_SIZE,
     79       1.22   bouyer 		    PAGE_SIZE, 0, &seg, 1, &rseg, BUS_DMA_NOWAIT);
     80       1.22   bouyer 		if (error) {
     81       1.32  thorpej 			aprint_error(
     82       1.32  thorpej 			    "%s: unable to allocate script DMA memory, "
     83       1.22   bouyer 			    "error = %d\n", sc->sc_dev.dv_xname, error);
     84       1.22   bouyer 			return error;
     85       1.22   bouyer 		}
     86       1.22   bouyer 		error = bus_dmamem_map(sc->sc_dmat, &seg, rseg, PAGE_SIZE,
     87       1.22   bouyer 		    (caddr_t *)&sc->sc_script,
     88       1.22   bouyer 		    BUS_DMA_NOWAIT|BUS_DMA_COHERENT);
     89       1.22   bouyer 		if (error) {
     90       1.32  thorpej 			aprint_error("%s: unable to map script DMA memory, "
     91       1.22   bouyer 			    "error = %d\n", sc->sc_dev.dv_xname, error);
     92       1.22   bouyer 			return error;
     93       1.22   bouyer 		}
     94       1.22   bouyer 		error = bus_dmamap_create(sc->sc_dmat, PAGE_SIZE, 1,
     95       1.22   bouyer 		    PAGE_SIZE, 0, BUS_DMA_NOWAIT, &sc->sc_scriptdma);
     96       1.22   bouyer 		if (error) {
     97       1.32  thorpej 			aprint_error("%s: unable to create script DMA map, "
     98       1.22   bouyer 			    "error = %d\n", sc->sc_dev.dv_xname, error);
     99       1.22   bouyer 			return error;
    100       1.22   bouyer 		}
    101       1.22   bouyer 		error = bus_dmamap_load(sc->sc_dmat, sc->sc_scriptdma,
    102       1.22   bouyer 		    sc->sc_script, PAGE_SIZE, NULL, BUS_DMA_NOWAIT);
    103       1.22   bouyer 		if (error) {
    104       1.32  thorpej 			aprint_error("%s: unable to load script DMA map, "
    105       1.22   bouyer 			    "error = %d\n", sc->sc_dev.dv_xname, error);
    106       1.22   bouyer 			return error;
    107       1.22   bouyer 		}
    108       1.22   bouyer 		sc->sc_scriptaddr =
    109       1.22   bouyer 		    sc->sc_scriptdma->dm_segs[0].ds_addr;
    110       1.22   bouyer 		sc->ram_size = PAGE_SIZE;
    111       1.22   bouyer 	}
    112       1.22   bouyer 
    113       1.22   bouyer 	sc->sc_adapt.adapt_dev = &sc->sc_dev;
    114       1.22   bouyer 	sc->sc_adapt.adapt_nchannels = 1;
    115       1.22   bouyer 	sc->sc_adapt.adapt_openings = 0;
    116       1.22   bouyer 	sc->sc_adapt.adapt_ioctl = siop_ioctl;
    117       1.22   bouyer 	sc->sc_adapt.adapt_minphys = minphys;
    118       1.22   bouyer 
    119       1.22   bouyer 	memset(&sc->sc_chan, 0, sizeof(sc->sc_chan));
    120       1.22   bouyer 	sc->sc_chan.chan_adapter = &sc->sc_adapt;
    121       1.22   bouyer 	sc->sc_chan.chan_bustype = &scsi_bustype;
    122       1.22   bouyer 	sc->sc_chan.chan_channel = 0;
    123       1.22   bouyer 	sc->sc_chan.chan_flags = SCSIPI_CHAN_CANGROW;
    124       1.22   bouyer 	sc->sc_chan.chan_ntargets =
    125       1.22   bouyer 	    (sc->features & SF_BUS_WIDE) ? 16 : 8;
    126       1.22   bouyer 	sc->sc_chan.chan_nluns = 8;
    127       1.22   bouyer 	sc->sc_chan.chan_id =
    128       1.22   bouyer 	    bus_space_read_1(sc->sc_rt, sc->sc_rh, SIOP_SCID);
    129       1.22   bouyer 	if (sc->sc_chan.chan_id == 0 ||
    130       1.22   bouyer 	    sc->sc_chan.chan_id >= sc->sc_chan.chan_ntargets)
    131       1.22   bouyer 		sc->sc_chan.chan_id = SIOP_DEFAULT_TARGET;
    132       1.22   bouyer 
    133       1.22   bouyer 	for (i = 0; i < 16; i++)
    134       1.22   bouyer 		sc->targets[i] = NULL;
    135       1.22   bouyer 
    136       1.22   bouyer 	/* find min/max sync period for this chip */
    137       1.22   bouyer 	sc->st_maxsync = 0;
    138       1.22   bouyer 	sc->dt_maxsync = 0;
    139       1.22   bouyer 	sc->st_minsync = 255;
    140       1.22   bouyer 	sc->dt_minsync = 255;
    141       1.22   bouyer 	for (i = 0; i < sizeof(scf_period) / sizeof(scf_period[0]); i++) {
    142       1.22   bouyer 		if (sc->clock_period != scf_period[i].clock)
    143       1.22   bouyer 			continue;
    144       1.22   bouyer 		if (sc->st_maxsync < scf_period[i].period)
    145       1.22   bouyer 			sc->st_maxsync = scf_period[i].period;
    146       1.22   bouyer 		if (sc->st_minsync > scf_period[i].period)
    147       1.22   bouyer 			sc->st_minsync = scf_period[i].period;
    148       1.22   bouyer 	}
    149       1.22   bouyer 	if (sc->st_maxsync == 255 || sc->st_minsync == 0)
    150       1.31   provos 		panic("siop: can't find my sync parameters");
    151       1.22   bouyer 	for (i = 0; i < sizeof(dt_scf_period) / sizeof(dt_scf_period[0]); i++) {
    152       1.22   bouyer 		if (sc->clock_period != dt_scf_period[i].clock)
    153       1.22   bouyer 			continue;
    154       1.22   bouyer 		if (sc->dt_maxsync < dt_scf_period[i].period)
    155       1.22   bouyer 			sc->dt_maxsync = dt_scf_period[i].period;
    156       1.22   bouyer 		if (sc->dt_minsync > dt_scf_period[i].period)
    157       1.22   bouyer 			sc->dt_minsync = dt_scf_period[i].period;
    158       1.22   bouyer 	}
    159       1.22   bouyer 	if (sc->dt_maxsync == 255 || sc->dt_minsync == 0)
    160       1.31   provos 		panic("siop: can't find my sync parameters");
    161       1.22   bouyer 	return 0;
    162       1.22   bouyer }
    163        1.1   bouyer 
    164        1.1   bouyer void
    165        1.1   bouyer siop_common_reset(sc)
    166       1.17   bouyer 	struct siop_common_softc *sc;
    167        1.1   bouyer {
    168        1.1   bouyer 	u_int32_t stest3;
    169        1.1   bouyer 
    170        1.1   bouyer 	/* reset the chip */
    171        1.1   bouyer 	bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_ISTAT, ISTAT_SRST);
    172        1.1   bouyer 	delay(1000);
    173        1.1   bouyer 	bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_ISTAT, 0);
    174        1.1   bouyer 
    175        1.1   bouyer 	/* init registers */
    176        1.1   bouyer 	bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_SCNTL0,
    177        1.1   bouyer 	    SCNTL0_ARB_MASK | SCNTL0_EPC | SCNTL0_AAP);
    178        1.1   bouyer 	bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_SCNTL1, 0);
    179        1.1   bouyer 	bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_SCNTL3, sc->clock_div);
    180        1.7   bouyer 	bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_SXFER, 0);
    181        1.1   bouyer 	bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_DIEN, 0xff);
    182        1.1   bouyer 	bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_SIEN0,
    183        1.1   bouyer 	    0xff & ~(SIEN0_CMP | SIEN0_SEL | SIEN0_RSL));
    184        1.1   bouyer 	bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_SIEN1,
    185        1.1   bouyer 	    0xff & ~(SIEN1_HTH | SIEN1_GEN));
    186        1.1   bouyer 	bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_STEST2, 0);
    187        1.1   bouyer 	bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_STEST3, STEST3_TE);
    188        1.1   bouyer 	bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_STIME0,
    189        1.1   bouyer 	    (0xb << STIME0_SEL_SHIFT));
    190        1.1   bouyer 	bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_SCID,
    191       1.14   bouyer 	    sc->sc_chan.chan_id | SCID_RRE);
    192        1.1   bouyer 	bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_RESPID0,
    193       1.14   bouyer 	    1 << sc->sc_chan.chan_id);
    194        1.1   bouyer 	bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_DCNTL,
    195        1.1   bouyer 	    (sc->features & SF_CHIP_PF) ? DCNTL_COM | DCNTL_PFEN : DCNTL_COM);
    196       1.33   bouyer 	if (sc->features & SF_CHIP_AAIP)
    197       1.33   bouyer 		bus_space_write_1(sc->sc_rt, sc->sc_rh,
    198       1.33   bouyer 		    SIOP_AIPCNTL1, AIPCNTL1_DIS);
    199        1.1   bouyer 
    200        1.1   bouyer 	/* enable clock doubler or quadruler if appropriate */
    201        1.1   bouyer 	if (sc->features & (SF_CHIP_DBLR | SF_CHIP_QUAD)) {
    202        1.1   bouyer 		stest3 = bus_space_read_1(sc->sc_rt, sc->sc_rh, SIOP_STEST3);
    203        1.1   bouyer 		bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_STEST1,
    204        1.1   bouyer 		    STEST1_DBLEN);
    205        1.1   bouyer 		if (sc->features & SF_CHIP_QUAD) {
    206        1.1   bouyer 			/* wait for PPL to lock */
    207        1.1   bouyer 			while ((bus_space_read_1(sc->sc_rt, sc->sc_rh,
    208        1.1   bouyer 			    SIOP_STEST4) & STEST4_LOCK) == 0)
    209        1.1   bouyer 				delay(10);
    210        1.1   bouyer 		} else {
    211        1.1   bouyer 			/* data sheet says 20us - more won't hurt */
    212        1.1   bouyer 			delay(100);
    213        1.1   bouyer 		}
    214        1.1   bouyer 		/* halt scsi clock, select doubler/quad, restart clock */
    215        1.1   bouyer 		bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_STEST3,
    216        1.1   bouyer 		    stest3 | STEST3_HSC);
    217        1.1   bouyer 		bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_STEST1,
    218        1.1   bouyer 		    STEST1_DBLEN | STEST1_DBLSEL);
    219        1.1   bouyer 		bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_STEST3, stest3);
    220        1.1   bouyer 	} else {
    221        1.1   bouyer 		bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_STEST1, 0);
    222        1.1   bouyer 	}
    223        1.1   bouyer 	if (sc->features & SF_CHIP_FIFO)
    224        1.1   bouyer 		bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_CTEST5,
    225        1.1   bouyer 		    bus_space_read_1(sc->sc_rt, sc->sc_rh, SIOP_CTEST5) |
    226        1.1   bouyer 		    CTEST5_DFS);
    227       1.21   bouyer 	if (sc->features & SF_CHIP_LED0) {
    228       1.21   bouyer 		/* Set GPIO0 as output if software LED control is required */
    229       1.21   bouyer 		bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_GPCNTL,
    230       1.21   bouyer 		    bus_space_read_1(sc->sc_rt, sc->sc_rh, SIOP_GPCNTL) & 0xfe);
    231       1.21   bouyer 	}
    232       1.22   bouyer 	if (sc->features & SF_BUS_ULTRA3) {
    233       1.22   bouyer 		/* reset SCNTL4 */
    234       1.22   bouyer 		bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_SCNTL4, 0);
    235       1.22   bouyer 	}
    236       1.27   bouyer 	sc->mode = bus_space_read_1(sc->sc_rt, sc->sc_rh, SIOP_STEST4) &
    237       1.27   bouyer 	    STEST4_MODE_MASK;
    238       1.30   bouyer 
    239       1.30   bouyer 	/*
    240       1.30   bouyer 	 * initialise the RAM. Without this we may get scsi gross errors on
    241       1.30   bouyer 	 * the 1010
    242       1.30   bouyer 	 */
    243       1.30   bouyer 	if (sc->features & SF_CHIP_RAM)
    244       1.30   bouyer 		bus_space_set_region_4(sc->sc_ramt, sc->sc_ramh,
    245       1.30   bouyer 			0, 0, sc->ram_size / 4);
    246        1.1   bouyer 	sc->sc_reset(sc);
    247        1.1   bouyer }
    248        1.1   bouyer 
    249       1.10   bouyer /* prepare tables before sending a cmd */
    250       1.10   bouyer void
    251       1.10   bouyer siop_setuptables(siop_cmd)
    252       1.17   bouyer 	struct siop_common_cmd *siop_cmd;
    253       1.10   bouyer {
    254       1.10   bouyer 	int i;
    255       1.17   bouyer 	struct siop_common_softc *sc = siop_cmd->siop_sc;
    256       1.10   bouyer 	struct scsipi_xfer *xs = siop_cmd->xs;
    257       1.14   bouyer 	int target = xs->xs_periph->periph_target;
    258       1.14   bouyer 	int lun = xs->xs_periph->periph_lun;
    259       1.14   bouyer 	int msgoffset = 1;
    260       1.10   bouyer 
    261       1.17   bouyer 	siop_cmd->siop_tables->id = htole32(sc->targets[target]->id);
    262       1.22   bouyer 	memset(siop_cmd->siop_tables->msg_out, 0,
    263       1.22   bouyer 	    sizeof(siop_cmd->siop_tables->msg_out));
    264       1.14   bouyer 	/* request sense doesn't disconnect */
    265       1.14   bouyer 	if (xs->xs_control & XS_CTL_REQSENSE)
    266       1.17   bouyer 		siop_cmd->siop_tables->msg_out[0] = MSG_IDENTIFY(lun, 0);
    267       1.26   bouyer 	else if ((sc->features & SF_CHIP_GEBUG) &&
    268       1.26   bouyer 	    (sc->targets[target]->flags & TARF_ISWIDE) == 0)
    269       1.26   bouyer 		/*
    270       1.26   bouyer 		 * 1010 bug: it seems that the 1010 has problems with reselect
    271       1.26   bouyer 		 * when not in wide mode (generate false SCSI gross error).
    272       1.26   bouyer 		 * The FreeBSD sym driver has comments about it but their
    273       1.26   bouyer 		 * workaround (disable SCSI gross error reporting) doesn't
    274       1.26   bouyer 		 * work with my adapter. So disable disconnect when not
    275       1.26   bouyer 		 * wide.
    276       1.26   bouyer 		 */
    277       1.26   bouyer 		siop_cmd->siop_tables->msg_out[0] = MSG_IDENTIFY(lun, 0);
    278       1.14   bouyer 	else
    279       1.17   bouyer 		siop_cmd->siop_tables->msg_out[0] = MSG_IDENTIFY(lun, 1);
    280       1.14   bouyer 	if (xs->xs_tag_type != 0) {
    281       1.14   bouyer 		if ((sc->targets[target]->flags & TARF_TAG) == 0) {
    282       1.14   bouyer 			scsipi_printaddr(xs->xs_periph);
    283       1.14   bouyer 			printf(": tagged command type %d id %d\n",
    284       1.14   bouyer 			    siop_cmd->xs->xs_tag_type, siop_cmd->xs->xs_tag_id);
    285       1.31   provos 			panic("tagged command for non-tagging device");
    286       1.14   bouyer 		}
    287       1.14   bouyer 		siop_cmd->flags |= CMDFL_TAG;
    288       1.17   bouyer 		siop_cmd->siop_tables->msg_out[1] = siop_cmd->xs->xs_tag_type;
    289       1.19   bouyer 		/*
    290       1.19   bouyer 		 * use siop_cmd->tag not xs->xs_tag_id, caller may want a
    291       1.19   bouyer 		 * different one
    292       1.19   bouyer 		 */
    293       1.19   bouyer 		siop_cmd->siop_tables->msg_out[2] = siop_cmd->tag;
    294       1.14   bouyer 		msgoffset = 3;
    295       1.20   bouyer 	}
    296       1.25   bouyer 	siop_cmd->siop_tables->t_msgout.count= htole32(msgoffset);
    297       1.10   bouyer 	if (sc->targets[target]->status == TARST_ASYNC) {
    298       1.27   bouyer 		if ((sc->targets[target]->flags & TARF_DT) &&
    299       1.27   bouyer 			(sc->mode == STEST4_MODE_LVD)) {
    300       1.22   bouyer 			sc->targets[target]->status = TARST_PPR_NEG;
    301       1.22   bouyer 			 siop_ppr_msg(siop_cmd, msgoffset, sc->dt_minsync,
    302       1.22   bouyer 			    sc->maxoff);
    303       1.22   bouyer 		} else if (sc->targets[target]->flags & TARF_WIDE) {
    304       1.10   bouyer 			sc->targets[target]->status = TARST_WIDE_NEG;
    305       1.14   bouyer 			siop_wdtr_msg(siop_cmd, msgoffset,
    306       1.14   bouyer 			    MSG_EXT_WDTR_BUS_16_BIT);
    307       1.10   bouyer 		} else if (sc->targets[target]->flags & TARF_SYNC) {
    308       1.10   bouyer 			sc->targets[target]->status = TARST_SYNC_NEG;
    309       1.22   bouyer 			siop_sdtr_msg(siop_cmd, msgoffset, sc->st_minsync,
    310       1.22   bouyer 			(sc->maxoff > 31) ? 31 :  sc->maxoff);
    311       1.10   bouyer 		} else {
    312       1.10   bouyer 			sc->targets[target]->status = TARST_OK;
    313       1.14   bouyer 			siop_update_xfer_mode(sc, target);
    314       1.10   bouyer 		}
    315       1.10   bouyer 	}
    316       1.17   bouyer 	siop_cmd->siop_tables->status =
    317       1.11   bouyer 	    htole32(SCSI_SIOP_NOSTATUS); /* set invalid status */
    318       1.10   bouyer 
    319       1.17   bouyer 	siop_cmd->siop_tables->cmd.count =
    320       1.10   bouyer 	    htole32(siop_cmd->dmamap_cmd->dm_segs[0].ds_len);
    321       1.17   bouyer 	siop_cmd->siop_tables->cmd.addr =
    322       1.10   bouyer 	    htole32(siop_cmd->dmamap_cmd->dm_segs[0].ds_addr);
    323       1.14   bouyer 	if (xs->xs_control & (XS_CTL_DATA_IN | XS_CTL_DATA_OUT)) {
    324       1.10   bouyer 		for (i = 0; i < siop_cmd->dmamap_data->dm_nsegs; i++) {
    325       1.17   bouyer 			siop_cmd->siop_tables->data[i].count =
    326       1.10   bouyer 			    htole32(siop_cmd->dmamap_data->dm_segs[i].ds_len);
    327       1.17   bouyer 			siop_cmd->siop_tables->data[i].addr =
    328       1.10   bouyer 			    htole32(siop_cmd->dmamap_data->dm_segs[i].ds_addr);
    329       1.10   bouyer 		}
    330       1.10   bouyer 	}
    331       1.10   bouyer }
    332       1.10   bouyer 
    333        1.1   bouyer int
    334        1.1   bouyer siop_wdtr_neg(siop_cmd)
    335       1.17   bouyer 	struct siop_common_cmd *siop_cmd;
    336        1.1   bouyer {
    337       1.17   bouyer 	struct siop_common_softc *sc = siop_cmd->siop_sc;
    338       1.17   bouyer 	struct siop_common_target *siop_target = siop_cmd->siop_target;
    339       1.14   bouyer 	int target = siop_cmd->xs->xs_periph->periph_target;
    340       1.17   bouyer 	struct siop_common_xfer *tables = siop_cmd->siop_tables;
    341        1.1   bouyer 
    342        1.1   bouyer 	if (siop_target->status == TARST_WIDE_NEG) {
    343        1.1   bouyer 		/* we initiated wide negotiation */
    344        1.9   bouyer 		switch (tables->msg_in[3]) {
    345        1.1   bouyer 		case MSG_EXT_WDTR_BUS_8_BIT:
    346        1.9   bouyer 			siop_target->flags &= ~TARF_ISWIDE;
    347        1.1   bouyer 			sc->targets[target]->id &= ~(SCNTL3_EWS << 24);
    348        1.1   bouyer 			break;
    349        1.1   bouyer 		case MSG_EXT_WDTR_BUS_16_BIT:
    350        1.9   bouyer 			if (siop_target->flags & TARF_WIDE) {
    351        1.9   bouyer 				siop_target->flags |= TARF_ISWIDE;
    352        1.1   bouyer 				sc->targets[target]->id |= (SCNTL3_EWS << 24);
    353        1.1   bouyer 				break;
    354        1.1   bouyer 			}
    355  1.37.10.1     yamt 		/* FALLTHROUGH */
    356        1.1   bouyer 		default:
    357        1.1   bouyer 			/*
    358       1.29      wiz  			 * hum, we got more than what we can handle, shouldn't
    359        1.1   bouyer 			 * happen. Reject, and stay async
    360        1.1   bouyer 			 */
    361        1.9   bouyer 			siop_target->flags &= ~TARF_ISWIDE;
    362        1.1   bouyer 			siop_target->status = TARST_OK;
    363       1.14   bouyer 			siop_target->offset = siop_target->period = 0;
    364       1.14   bouyer 			siop_update_xfer_mode(sc, target);
    365        1.1   bouyer 			printf("%s: rejecting invalid wide negotiation from "
    366        1.1   bouyer 			    "target %d (%d)\n", sc->sc_dev.dv_xname, target,
    367        1.9   bouyer 			    tables->msg_in[3]);
    368        1.9   bouyer 			tables->t_msgout.count= htole32(1);
    369        1.9   bouyer 			tables->msg_out[0] = MSG_MESSAGE_REJECT;
    370        1.1   bouyer 			return SIOP_NEG_MSGOUT;
    371        1.1   bouyer 		}
    372        1.9   bouyer 		tables->id = htole32(sc->targets[target]->id);
    373        1.1   bouyer 		bus_space_write_1(sc->sc_rt, sc->sc_rh,
    374        1.1   bouyer 		    SIOP_SCNTL3,
    375        1.1   bouyer 		    (sc->targets[target]->id >> 24) & 0xff);
    376        1.1   bouyer 		/* we now need to do sync */
    377        1.9   bouyer 		if (siop_target->flags & TARF_SYNC) {
    378        1.6   bouyer 			siop_target->status = TARST_SYNC_NEG;
    379       1.22   bouyer 			siop_sdtr_msg(siop_cmd, 0, sc->st_minsync,
    380       1.22   bouyer 			    (sc->maxoff > 31) ? 31 : sc->maxoff);
    381        1.6   bouyer 			return SIOP_NEG_MSGOUT;
    382        1.6   bouyer 		} else {
    383        1.6   bouyer 			siop_target->status = TARST_OK;
    384       1.14   bouyer 			siop_update_xfer_mode(sc, target);
    385        1.6   bouyer 			return SIOP_NEG_ACK;
    386        1.6   bouyer 		}
    387        1.1   bouyer 	} else {
    388        1.1   bouyer 		/* target initiated wide negotiation */
    389        1.9   bouyer 		if (tables->msg_in[3] >= MSG_EXT_WDTR_BUS_16_BIT
    390        1.9   bouyer 		    && (siop_target->flags & TARF_WIDE)) {
    391        1.9   bouyer 			siop_target->flags |= TARF_ISWIDE;
    392        1.1   bouyer 			sc->targets[target]->id |= SCNTL3_EWS << 24;
    393        1.1   bouyer 		} else {
    394        1.9   bouyer 			siop_target->flags &= ~TARF_ISWIDE;
    395        1.1   bouyer 			sc->targets[target]->id &= ~(SCNTL3_EWS << 24);
    396        1.1   bouyer 		}
    397        1.9   bouyer 		tables->id = htole32(sc->targets[target]->id);
    398        1.1   bouyer 		bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_SCNTL3,
    399        1.1   bouyer 		    (sc->targets[target]->id >> 24) & 0xff);
    400        1.1   bouyer 		/*
    401        1.1   bouyer 		 * we did reset wide parameters, so fall back to async,
    402        1.8   bouyer 		 * but don't schedule a sync neg, target should initiate it
    403        1.1   bouyer 		 */
    404        1.1   bouyer 		siop_target->status = TARST_OK;
    405       1.14   bouyer 		siop_target->offset = siop_target->period = 0;
    406       1.14   bouyer 		siop_update_xfer_mode(sc, target);
    407       1.10   bouyer 		siop_wdtr_msg(siop_cmd, 0, (siop_target->flags & TARF_ISWIDE) ?
    408       1.10   bouyer 		    MSG_EXT_WDTR_BUS_16_BIT : MSG_EXT_WDTR_BUS_8_BIT);
    409        1.1   bouyer 		return SIOP_NEG_MSGOUT;
    410        1.1   bouyer 	}
    411        1.1   bouyer }
    412        1.1   bouyer 
    413        1.1   bouyer int
    414       1.22   bouyer siop_ppr_neg(siop_cmd)
    415       1.22   bouyer 	struct siop_common_cmd *siop_cmd;
    416       1.22   bouyer {
    417       1.22   bouyer 	struct siop_common_softc *sc = siop_cmd->siop_sc;
    418       1.22   bouyer 	struct siop_common_target *siop_target = siop_cmd->siop_target;
    419       1.22   bouyer 	int target = siop_cmd->xs->xs_periph->periph_target;
    420       1.22   bouyer 	struct siop_common_xfer *tables = siop_cmd->siop_tables;
    421       1.22   bouyer 	int sync, offset, options, scf = 0;
    422       1.22   bouyer 	int i;
    423       1.22   bouyer 
    424       1.22   bouyer #ifdef DEBUG_NEG
    425       1.22   bouyer 	printf("%s: anserw on ppr negotiation:", sc->sc_dev.dv_xname);
    426       1.22   bouyer 	for (i = 0; i < 8; i++)
    427       1.22   bouyer 		printf(" 0x%x", tables->msg_in[i]);
    428       1.22   bouyer 	printf("\n");
    429       1.22   bouyer #endif
    430       1.22   bouyer 
    431       1.22   bouyer 	if (siop_target->status == TARST_PPR_NEG) {
    432       1.22   bouyer 		/* we initiated PPR negotiation */
    433       1.22   bouyer 		sync = tables->msg_in[3];
    434       1.22   bouyer 		offset = tables->msg_in[5];
    435       1.22   bouyer 		options = tables->msg_in[7];
    436       1.22   bouyer 		if (options != MSG_EXT_PPR_DT) {
    437       1.22   bouyer 			/* should't happen */
    438       1.22   bouyer 			printf("%s: ppr negotiation for target %d: "
    439       1.22   bouyer 			    "no DT option\n", sc->sc_dev.dv_xname, target);
    440       1.22   bouyer 			siop_target->status = TARST_ASYNC;
    441       1.22   bouyer 			siop_target->flags &= ~(TARF_DT | TARF_ISDT);
    442       1.22   bouyer 			siop_target->offset = 0;
    443       1.22   bouyer 			siop_target->period = 0;
    444       1.22   bouyer 			goto reject;
    445       1.22   bouyer 		}
    446       1.37    perry 
    447       1.22   bouyer 		if (offset > sc->maxoff || sync < sc->dt_minsync ||
    448       1.22   bouyer 		    sync > sc->dt_maxsync) {
    449       1.22   bouyer 			printf("%s: ppr negotiation for target %d: "
    450       1.22   bouyer 			    "offset (%d) or sync (%d) out of range\n",
    451       1.22   bouyer 			    sc->sc_dev.dv_xname, target, offset, sync);
    452       1.22   bouyer 			/* should not happen */
    453       1.22   bouyer 			siop_target->offset = 0;
    454       1.22   bouyer 			siop_target->period = 0;
    455       1.22   bouyer 			goto reject;
    456       1.22   bouyer 		} else {
    457       1.22   bouyer 			for (i = 0; i <
    458       1.22   bouyer 			    sizeof(dt_scf_period) / sizeof(dt_scf_period[0]);
    459       1.22   bouyer 			    i++) {
    460       1.22   bouyer 				if (sc->clock_period != dt_scf_period[i].clock)
    461       1.22   bouyer 					continue;
    462       1.22   bouyer 				if (dt_scf_period[i].period == sync) {
    463       1.22   bouyer 					/* ok, found it. we now are sync. */
    464       1.22   bouyer 					siop_target->offset = offset;
    465       1.22   bouyer 					siop_target->period = sync;
    466       1.22   bouyer 					scf = dt_scf_period[i].scf;
    467       1.22   bouyer 					siop_target->flags |= TARF_ISDT;
    468       1.22   bouyer 				}
    469       1.22   bouyer 			}
    470       1.22   bouyer 			if ((siop_target->flags & TARF_ISDT) == 0) {
    471       1.22   bouyer 				printf("%s: ppr negotiation for target %d: "
    472       1.22   bouyer 				    "sync (%d) incompatible with adapter\n",
    473       1.22   bouyer 				    sc->sc_dev.dv_xname, target, sync);
    474       1.22   bouyer 				/*
    475       1.22   bouyer 				 * we didn't find it in our table, do async
    476       1.22   bouyer 				 * send reject msg, start SDTR/WDTR neg
    477       1.22   bouyer 				 */
    478       1.22   bouyer 				siop_target->status = TARST_ASYNC;
    479       1.22   bouyer 				siop_target->flags &= ~(TARF_DT | TARF_ISDT);
    480       1.22   bouyer 				siop_target->offset = 0;
    481       1.22   bouyer 				siop_target->period = 0;
    482       1.22   bouyer 				goto reject;
    483       1.22   bouyer 			}
    484       1.22   bouyer 		}
    485       1.22   bouyer 		if (tables->msg_in[6] != 1) {
    486       1.22   bouyer 			printf("%s: ppr negotiation for target %d: "
    487       1.22   bouyer 			    "transfer width (%d) incompatible with dt\n",
    488       1.22   bouyer 			    sc->sc_dev.dv_xname, target, tables->msg_in[6]);
    489       1.22   bouyer 			/* DT mode can only be done with wide transfers */
    490       1.22   bouyer 			siop_target->status = TARST_ASYNC;
    491       1.22   bouyer 			goto reject;
    492       1.37    perry 		}
    493       1.22   bouyer 		siop_target->flags |= TARF_ISWIDE;
    494       1.22   bouyer 		sc->targets[target]->id |= (SCNTL3_EWS << 24);
    495       1.22   bouyer 		sc->targets[target]->id &= ~(SCNTL3_SCF_MASK << 24);
    496       1.22   bouyer 		sc->targets[target]->id |= scf << (24 + SCNTL3_SCF_SHIFT);
    497       1.22   bouyer 		sc->targets[target]->id &= ~(SXFER_MO_MASK << 8);
    498       1.22   bouyer 		sc->targets[target]->id |=
    499       1.22   bouyer 		    (siop_target->offset & SXFER_MO_MASK) << 8;
    500       1.22   bouyer 		sc->targets[target]->id &= ~0xff;
    501       1.22   bouyer 		sc->targets[target]->id |= SCNTL4_U3EN;
    502       1.22   bouyer 		siop_target->status = TARST_OK;
    503       1.22   bouyer 		siop_update_xfer_mode(sc, target);
    504       1.22   bouyer 		bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_SCNTL3,
    505       1.22   bouyer 		    (sc->targets[target]->id >> 24) & 0xff);
    506       1.22   bouyer 		bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_SXFER,
    507       1.22   bouyer 		    (sc->targets[target]->id >> 8) & 0xff);
    508       1.22   bouyer 		bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_SCNTL4,
    509       1.22   bouyer 		    sc->targets[target]->id & 0xff);
    510       1.22   bouyer 		return SIOP_NEG_ACK;
    511       1.22   bouyer 	} else {
    512       1.22   bouyer 		/* target initiated PPR negotiation, shouldn't happen */
    513       1.22   bouyer 		printf("%s: rejecting invalid PPR negotiation from "
    514       1.22   bouyer 		    "target %d\n", sc->sc_dev.dv_xname, target);
    515       1.22   bouyer reject:
    516       1.22   bouyer 		tables->t_msgout.count= htole32(1);
    517       1.22   bouyer 		tables->msg_out[0] = MSG_MESSAGE_REJECT;
    518       1.22   bouyer 		return SIOP_NEG_MSGOUT;
    519       1.22   bouyer 	}
    520       1.22   bouyer }
    521       1.22   bouyer 
    522       1.22   bouyer int
    523        1.1   bouyer siop_sdtr_neg(siop_cmd)
    524       1.17   bouyer 	struct siop_common_cmd *siop_cmd;
    525        1.1   bouyer {
    526       1.17   bouyer 	struct siop_common_softc *sc = siop_cmd->siop_sc;
    527       1.17   bouyer 	struct siop_common_target *siop_target = siop_cmd->siop_target;
    528       1.14   bouyer 	int target = siop_cmd->xs->xs_periph->periph_target;
    529       1.22   bouyer 	int sync, maxoffset, offset, i;
    530        1.1   bouyer 	int send_msgout = 0;
    531       1.17   bouyer 	struct siop_common_xfer *tables = siop_cmd->siop_tables;
    532        1.1   bouyer 
    533       1.22   bouyer 	/* limit to Ultra/2 parameters, need PPR for Ultra/3 */
    534       1.22   bouyer 	maxoffset = (sc->maxoff > 31) ? 31 : sc->maxoff;
    535       1.22   bouyer 
    536        1.9   bouyer 	sync = tables->msg_in[3];
    537        1.9   bouyer 	offset = tables->msg_in[4];
    538        1.1   bouyer 
    539        1.1   bouyer 	if (siop_target->status == TARST_SYNC_NEG) {
    540        1.1   bouyer 		/* we initiated sync negotiation */
    541        1.1   bouyer 		siop_target->status = TARST_OK;
    542        1.1   bouyer #ifdef DEBUG
    543        1.1   bouyer 		printf("sdtr: sync %d offset %d\n", sync, offset);
    544        1.1   bouyer #endif
    545       1.22   bouyer 		if (offset > maxoffset || sync < sc->st_minsync ||
    546       1.22   bouyer 			sync > sc->st_maxsync)
    547        1.1   bouyer 			goto reject;
    548        1.1   bouyer 		for (i = 0; i < sizeof(scf_period) / sizeof(scf_period[0]);
    549        1.1   bouyer 		    i++) {
    550        1.1   bouyer 			if (sc->clock_period != scf_period[i].clock)
    551        1.1   bouyer 				continue;
    552        1.1   bouyer 			if (scf_period[i].period == sync) {
    553        1.1   bouyer 				/* ok, found it. we now are sync. */
    554       1.14   bouyer 				siop_target->offset = offset;
    555       1.14   bouyer 				siop_target->period = sync;
    556        1.1   bouyer 				sc->targets[target]->id &=
    557        1.1   bouyer 				    ~(SCNTL3_SCF_MASK << 24);
    558        1.1   bouyer 				sc->targets[target]->id |= scf_period[i].scf
    559        1.1   bouyer 				    << (24 + SCNTL3_SCF_SHIFT);
    560       1.22   bouyer 				if (sync < 25 && /* Ultra */
    561       1.22   bouyer 				    (sc->features & SF_BUS_ULTRA3) == 0)
    562        1.1   bouyer 					sc->targets[target]->id |=
    563        1.1   bouyer 					    SCNTL3_ULTRA << 24;
    564        1.1   bouyer 				else
    565        1.1   bouyer 					sc->targets[target]->id &=
    566        1.1   bouyer 					    ~(SCNTL3_ULTRA << 24);
    567        1.1   bouyer 				sc->targets[target]->id &=
    568        1.7   bouyer 				    ~(SXFER_MO_MASK << 8);
    569        1.1   bouyer 				sc->targets[target]->id |=
    570        1.7   bouyer 				    (offset & SXFER_MO_MASK) << 8;
    571       1.25   bouyer 				sc->targets[target]->id &= ~0xff; /* scntl4 */
    572        1.1   bouyer 				goto end;
    573        1.1   bouyer 			}
    574        1.1   bouyer 		}
    575        1.1   bouyer 		/*
    576        1.1   bouyer 		 * we didn't find it in our table, do async and send reject
    577        1.1   bouyer 		 * msg
    578        1.1   bouyer 		 */
    579        1.1   bouyer reject:
    580        1.1   bouyer 		send_msgout = 1;
    581        1.9   bouyer 		tables->t_msgout.count= htole32(1);
    582        1.9   bouyer 		tables->msg_out[0] = MSG_MESSAGE_REJECT;
    583        1.1   bouyer 		sc->targets[target]->id &= ~(SCNTL3_SCF_MASK << 24);
    584        1.1   bouyer 		sc->targets[target]->id &= ~(SCNTL3_ULTRA << 24);
    585        1.7   bouyer 		sc->targets[target]->id &= ~(SXFER_MO_MASK << 8);
    586       1.25   bouyer 		sc->targets[target]->id &= ~0xff; /* scntl4 */
    587       1.14   bouyer 		siop_target->offset = siop_target->period = 0;
    588        1.1   bouyer 	} else { /* target initiated sync neg */
    589        1.1   bouyer #ifdef DEBUG
    590        1.1   bouyer 		printf("sdtr (target): sync %d offset %d\n", sync, offset);
    591        1.1   bouyer #endif
    592       1.22   bouyer 		if (offset == 0 || sync > sc->st_maxsync) { /* async */
    593        1.1   bouyer 			goto async;
    594        1.1   bouyer 		}
    595       1.22   bouyer 		if (offset > maxoffset)
    596       1.22   bouyer 			offset = maxoffset;
    597       1.22   bouyer 		if (sync < sc->st_minsync)
    598       1.22   bouyer 			sync = sc->st_minsync;
    599        1.1   bouyer 		/* look for sync period */
    600        1.1   bouyer 		for (i = 0; i < sizeof(scf_period) / sizeof(scf_period[0]);
    601        1.1   bouyer 		    i++) {
    602        1.1   bouyer 			if (sc->clock_period != scf_period[i].clock)
    603        1.1   bouyer 				continue;
    604        1.1   bouyer 			if (scf_period[i].period == sync) {
    605        1.1   bouyer 				/* ok, found it. we now are sync. */
    606       1.14   bouyer 				siop_target->offset = offset;
    607       1.14   bouyer 				siop_target->period = sync;
    608        1.1   bouyer 				sc->targets[target]->id &=
    609        1.1   bouyer 				    ~(SCNTL3_SCF_MASK << 24);
    610        1.1   bouyer 				sc->targets[target]->id |= scf_period[i].scf
    611        1.1   bouyer 				    << (24 + SCNTL3_SCF_SHIFT);
    612       1.22   bouyer 				if (sync < 25 && /* Ultra */
    613       1.22   bouyer 				    (sc->features & SF_BUS_ULTRA3) == 0)
    614        1.1   bouyer 					sc->targets[target]->id |=
    615        1.1   bouyer 					    SCNTL3_ULTRA << 24;
    616        1.1   bouyer 				else
    617        1.1   bouyer 					sc->targets[target]->id &=
    618        1.1   bouyer 					    ~(SCNTL3_ULTRA << 24);
    619        1.1   bouyer 				sc->targets[target]->id &=
    620        1.7   bouyer 				    ~(SXFER_MO_MASK << 8);
    621        1.1   bouyer 				sc->targets[target]->id |=
    622        1.7   bouyer 				    (offset & SXFER_MO_MASK) << 8;
    623       1.25   bouyer 				sc->targets[target]->id &= ~0xff; /* scntl4 */
    624       1.10   bouyer 				siop_sdtr_msg(siop_cmd, 0, sync, offset);
    625        1.1   bouyer 				send_msgout = 1;
    626        1.1   bouyer 				goto end;
    627        1.1   bouyer 			}
    628        1.1   bouyer 		}
    629        1.1   bouyer async:
    630       1.14   bouyer 		siop_target->offset = siop_target->period = 0;
    631        1.1   bouyer 		sc->targets[target]->id &= ~(SCNTL3_SCF_MASK << 24);
    632        1.1   bouyer 		sc->targets[target]->id &= ~(SCNTL3_ULTRA << 24);
    633        1.7   bouyer 		sc->targets[target]->id &= ~(SXFER_MO_MASK << 8);
    634       1.25   bouyer 		sc->targets[target]->id &= ~0xff; /* scntl4 */
    635       1.10   bouyer 		siop_sdtr_msg(siop_cmd, 0, 0, 0);
    636        1.1   bouyer 		send_msgout = 1;
    637        1.1   bouyer 	}
    638        1.1   bouyer end:
    639       1.14   bouyer 	if (siop_target->status == TARST_OK)
    640       1.14   bouyer 		siop_update_xfer_mode(sc, target);
    641        1.1   bouyer #ifdef DEBUG
    642        1.1   bouyer 	printf("id now 0x%x\n", sc->targets[target]->id);
    643        1.1   bouyer #endif
    644        1.9   bouyer 	tables->id = htole32(sc->targets[target]->id);
    645        1.1   bouyer 	bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_SCNTL3,
    646        1.1   bouyer 	    (sc->targets[target]->id >> 24) & 0xff);
    647        1.7   bouyer 	bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_SXFER,
    648        1.1   bouyer 	    (sc->targets[target]->id >> 8) & 0xff);
    649        1.1   bouyer 	if (send_msgout) {
    650        1.1   bouyer 		return SIOP_NEG_MSGOUT;
    651        1.1   bouyer 	} else {
    652        1.1   bouyer 		return SIOP_NEG_ACK;
    653        1.1   bouyer 	}
    654        1.1   bouyer }
    655        1.1   bouyer 
    656        1.1   bouyer void
    657       1.10   bouyer siop_sdtr_msg(siop_cmd, offset, ssync, soff)
    658       1.17   bouyer 	struct siop_common_cmd *siop_cmd;
    659       1.10   bouyer 	int offset;
    660       1.10   bouyer 	int ssync, soff;
    661       1.10   bouyer {
    662       1.17   bouyer 	siop_cmd->siop_tables->msg_out[offset + 0] = MSG_EXTENDED;
    663       1.17   bouyer 	siop_cmd->siop_tables->msg_out[offset + 1] = MSG_EXT_SDTR_LEN;
    664       1.17   bouyer 	siop_cmd->siop_tables->msg_out[offset + 2] = MSG_EXT_SDTR;
    665       1.17   bouyer 	siop_cmd->siop_tables->msg_out[offset + 3] = ssync;
    666       1.17   bouyer 	siop_cmd->siop_tables->msg_out[offset + 4] = soff;
    667       1.17   bouyer 	siop_cmd->siop_tables->t_msgout.count =
    668       1.10   bouyer 	    htole32(offset + MSG_EXT_SDTR_LEN + 2);
    669       1.10   bouyer }
    670       1.10   bouyer 
    671       1.10   bouyer void
    672       1.10   bouyer siop_wdtr_msg(siop_cmd, offset, wide)
    673       1.17   bouyer 	struct siop_common_cmd *siop_cmd;
    674       1.10   bouyer 	int offset;
    675       1.10   bouyer {
    676       1.17   bouyer 	siop_cmd->siop_tables->msg_out[offset + 0] = MSG_EXTENDED;
    677       1.17   bouyer 	siop_cmd->siop_tables->msg_out[offset + 1] = MSG_EXT_WDTR_LEN;
    678       1.17   bouyer 	siop_cmd->siop_tables->msg_out[offset + 2] = MSG_EXT_WDTR;
    679       1.17   bouyer 	siop_cmd->siop_tables->msg_out[offset + 3] = wide;
    680       1.17   bouyer 	siop_cmd->siop_tables->t_msgout.count =
    681       1.10   bouyer 	    htole32(offset + MSG_EXT_WDTR_LEN + 2);
    682       1.22   bouyer }
    683       1.22   bouyer 
    684       1.22   bouyer void
    685       1.22   bouyer siop_ppr_msg(siop_cmd, offset, ssync, soff)
    686       1.22   bouyer 	struct siop_common_cmd *siop_cmd;
    687       1.22   bouyer 	int offset;
    688       1.22   bouyer 	int ssync, soff;
    689       1.22   bouyer {
    690       1.22   bouyer 	siop_cmd->siop_tables->msg_out[offset + 0] = MSG_EXTENDED;
    691       1.22   bouyer 	siop_cmd->siop_tables->msg_out[offset + 1] = MSG_EXT_PPR_LEN;
    692       1.22   bouyer 	siop_cmd->siop_tables->msg_out[offset + 2] = MSG_EXT_PPR;
    693       1.22   bouyer 	siop_cmd->siop_tables->msg_out[offset + 3] = ssync;
    694       1.22   bouyer 	siop_cmd->siop_tables->msg_out[offset + 4] = 0; /* reserved */
    695       1.22   bouyer 	siop_cmd->siop_tables->msg_out[offset + 5] = soff;
    696       1.22   bouyer 	siop_cmd->siop_tables->msg_out[offset + 6] = 1; /* wide */
    697       1.22   bouyer 	siop_cmd->siop_tables->msg_out[offset + 7] = MSG_EXT_PPR_DT;
    698       1.22   bouyer 	siop_cmd->siop_tables->t_msgout.count =
    699       1.22   bouyer 	    htole32(offset + MSG_EXT_PPR_LEN + 2);
    700       1.10   bouyer }
    701       1.10   bouyer 
    702       1.10   bouyer void
    703        1.1   bouyer siop_minphys(bp)
    704        1.1   bouyer 	struct buf *bp;
    705        1.1   bouyer {
    706        1.1   bouyer 	minphys(bp);
    707        1.1   bouyer }
    708        1.1   bouyer 
    709        1.1   bouyer int
    710       1.14   bouyer siop_ioctl(chan, cmd, arg, flag, p)
    711       1.14   bouyer 	struct scsipi_channel *chan;
    712        1.1   bouyer 	u_long cmd;
    713        1.1   bouyer 	caddr_t arg;
    714        1.1   bouyer 	int flag;
    715        1.1   bouyer 	struct proc *p;
    716        1.1   bouyer {
    717       1.17   bouyer 	struct siop_common_softc *sc = (void *)chan->chan_adapter->adapt_dev;
    718        1.1   bouyer 
    719        1.1   bouyer 	switch (cmd) {
    720        1.1   bouyer 	case SCBUSIORESET:
    721       1.24   bouyer 		/*
    722       1.24   bouyer 		 * abort the script. This will trigger an interrupt, which will
    723       1.24   bouyer 		 * trigger a bus reset.
    724       1.24   bouyer 		 * We can't safely trigger the reset here as we can't access
    725       1.24   bouyer 		 * the required register while the script is running.
    726       1.24   bouyer 		 */
    727       1.24   bouyer 		bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_ISTAT, ISTAT_ABRT);
    728        1.1   bouyer 		return (0);
    729        1.1   bouyer 	default:
    730        1.1   bouyer 		return (ENOTTY);
    731        1.1   bouyer 	}
    732        1.1   bouyer }
    733        1.1   bouyer 
    734        1.1   bouyer void
    735       1.35   bouyer siop_ma(siop_cmd)
    736       1.17   bouyer 	struct siop_common_cmd *siop_cmd;
    737        1.1   bouyer {
    738        1.1   bouyer 	int offset, dbc, sstat;
    739       1.17   bouyer 	struct siop_common_softc *sc = siop_cmd->siop_sc;
    740       1.35   bouyer 	scr_table_t *table; /* table with partial xfer */
    741        1.1   bouyer 
    742       1.35   bouyer 	/*
    743       1.35   bouyer 	 * compute how much of the current table didn't get handled when
    744       1.35   bouyer 	 * a phase mismatch occurs
    745       1.35   bouyer 	 */
    746        1.1   bouyer 	if ((siop_cmd->xs->xs_control & (XS_CTL_DATA_OUT | XS_CTL_DATA_IN))
    747        1.1   bouyer 	    == 0)
    748       1.35   bouyer 	    return; /* no valid data transfer */
    749       1.35   bouyer 
    750        1.1   bouyer 	offset = bus_space_read_1(sc->sc_rt, sc->sc_rh, SIOP_SCRATCHA + 1);
    751        1.1   bouyer 	if (offset >= SIOP_NSG) {
    752        1.1   bouyer 		printf("%s: bad offset in siop_sdp (%d)\n",
    753        1.1   bouyer 		    sc->sc_dev.dv_xname, offset);
    754        1.1   bouyer 		return;
    755        1.1   bouyer 	}
    756       1.17   bouyer 	table = &siop_cmd->siop_tables->data[offset];
    757        1.1   bouyer #ifdef DEBUG_DR
    758       1.35   bouyer 	printf("siop_ma: offset %d count=%d addr=0x%x ", offset,
    759        1.1   bouyer 	    table->count, table->addr);
    760        1.1   bouyer #endif
    761        1.1   bouyer 	dbc = bus_space_read_4(sc->sc_rt, sc->sc_rh, SIOP_DBC) & 0x00ffffff;
    762        1.1   bouyer 	if (siop_cmd->xs->xs_control & XS_CTL_DATA_OUT) {
    763       1.13   bouyer 		if (sc->features & SF_CHIP_DFBC) {
    764       1.13   bouyer 			dbc +=
    765       1.13   bouyer 			    bus_space_read_2(sc->sc_rt, sc->sc_rh, SIOP_DFBC);
    766        1.1   bouyer 		} else {
    767       1.13   bouyer 			/* need to account stale data in FIFO */
    768       1.13   bouyer 			int dfifo =
    769       1.13   bouyer 			    bus_space_read_1(sc->sc_rt, sc->sc_rh, SIOP_DFIFO);
    770       1.13   bouyer 			if (sc->features & SF_CHIP_FIFO) {
    771       1.13   bouyer 				dfifo |= (bus_space_read_1(sc->sc_rt, sc->sc_rh,
    772       1.13   bouyer 				    SIOP_CTEST5) & CTEST5_BOMASK) << 8;
    773       1.13   bouyer 				dbc += (dfifo - (dbc & 0x3ff)) & 0x3ff;
    774       1.13   bouyer 			} else {
    775       1.13   bouyer 				dbc += (dfifo - (dbc & 0x7f)) & 0x7f;
    776       1.13   bouyer 			}
    777        1.1   bouyer 		}
    778        1.1   bouyer 		sstat = bus_space_read_1(sc->sc_rt, sc->sc_rh, SIOP_SSTAT0);
    779        1.1   bouyer 		if (sstat & SSTAT0_OLF)
    780        1.1   bouyer 			dbc++;
    781       1.13   bouyer 		if ((sstat & SSTAT0_ORF) && (sc->features & SF_CHIP_DFBC) == 0)
    782        1.1   bouyer 			dbc++;
    783        1.9   bouyer 		if (siop_cmd->siop_target->flags & TARF_ISWIDE) {
    784        1.1   bouyer 			sstat = bus_space_read_1(sc->sc_rt, sc->sc_rh,
    785        1.1   bouyer 			    SIOP_SSTAT2);
    786        1.1   bouyer 			if (sstat & SSTAT2_OLF1)
    787        1.1   bouyer 				dbc++;
    788       1.13   bouyer 			if ((sstat & SSTAT2_ORF1) &&
    789       1.13   bouyer 			    (sc->features & SF_CHIP_DFBC) == 0)
    790        1.1   bouyer 				dbc++;
    791        1.1   bouyer 		}
    792        1.1   bouyer 		/* clear the FIFO */
    793        1.1   bouyer 		bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_CTEST3,
    794        1.1   bouyer 		    bus_space_read_1(sc->sc_rt, sc->sc_rh, SIOP_CTEST3) |
    795        1.1   bouyer 		    CTEST3_CLF);
    796        1.1   bouyer 	}
    797       1.35   bouyer 	siop_cmd->flags |= CMDFL_RESID;
    798       1.35   bouyer 	siop_cmd->resid = dbc;
    799       1.35   bouyer }
    800       1.35   bouyer 
    801       1.35   bouyer void
    802       1.35   bouyer siop_sdp(siop_cmd, offset)
    803       1.35   bouyer 	struct siop_common_cmd *siop_cmd;
    804       1.35   bouyer 	int offset;
    805       1.35   bouyer {
    806       1.35   bouyer 	scr_table_t *table;
    807       1.37    perry 
    808       1.35   bouyer 	if ((siop_cmd->xs->xs_control & (XS_CTL_DATA_OUT | XS_CTL_DATA_IN))
    809       1.35   bouyer 	    == 0)
    810       1.35   bouyer 	    return; /* no data pointers to save */
    811       1.35   bouyer 
    812       1.35   bouyer 	/*
    813       1.35   bouyer 	 * offset == SIOP_NSG may be a valid condition if we get a Save data
    814       1.35   bouyer 	 * pointer when the xfer is done. Just ignore the Save data pointer
    815       1.35   bouyer 	 * in this case
    816       1.35   bouyer 	 */
    817       1.35   bouyer 	if (offset == SIOP_NSG)
    818       1.35   bouyer 		return;
    819       1.35   bouyer #ifdef DIAGNOSTIC
    820       1.35   bouyer 	if (offset > SIOP_NSG) {
    821       1.35   bouyer 		scsipi_printaddr(siop_cmd->xs->xs_periph);
    822       1.35   bouyer 		printf(": offset %d > %d\n", offset, SIOP_NSG);
    823       1.35   bouyer 		panic("siop_sdp: offset");
    824       1.35   bouyer 	}
    825        1.1   bouyer #endif
    826       1.35   bouyer 	/*
    827       1.35   bouyer 	 * Save data pointer. We do this by adjusting the tables to point
    828       1.37    perry 	 * at the begginning of the data not yet transfered.
    829       1.35   bouyer 	 * offset points to the first table with untransfered data.
    830       1.35   bouyer 	 */
    831       1.35   bouyer 
    832       1.35   bouyer 	/*
    833       1.35   bouyer 	 * before doing that we decrease resid from the ammount of data which
    834       1.35   bouyer 	 * has been transfered.
    835       1.35   bouyer 	 */
    836       1.35   bouyer 	siop_update_resid(siop_cmd, offset);
    837       1.35   bouyer 
    838       1.35   bouyer 	/*
    839       1.35   bouyer 	 * First let see if we have a resid from a phase mismatch. If so,
    840       1.35   bouyer 	 * we have to adjst the table at offset to remove transfered data.
    841       1.35   bouyer 	 */
    842       1.35   bouyer 	if (siop_cmd->flags & CMDFL_RESID) {
    843       1.35   bouyer 		siop_cmd->flags &= ~CMDFL_RESID;
    844       1.35   bouyer 		table = &siop_cmd->siop_tables->data[offset];
    845       1.35   bouyer 		/* "cut" already transfered data from this table */
    846       1.35   bouyer 		table->addr =
    847       1.35   bouyer 		    htole32(le32toh(table->addr) +
    848       1.35   bouyer 		    le32toh(table->count) - siop_cmd->resid);
    849       1.35   bouyer 		table->count = htole32(siop_cmd->resid);
    850       1.35   bouyer 	}
    851       1.35   bouyer 
    852       1.35   bouyer 	/*
    853       1.35   bouyer 	 * now we can remove entries which have been transfered.
    854       1.35   bouyer 	 * We just move the entries with data left at the beggining of the
    855       1.35   bouyer 	 * tables
    856       1.35   bouyer 	 */
    857       1.35   bouyer 	memmove(&siop_cmd->siop_tables->data[0],
    858       1.35   bouyer 	    &siop_cmd->siop_tables->data[offset],
    859       1.35   bouyer 	    (SIOP_NSG - offset) * sizeof(scr_table_t));
    860       1.35   bouyer }
    861       1.35   bouyer 
    862       1.35   bouyer void
    863       1.35   bouyer siop_update_resid(siop_cmd, offset)
    864       1.35   bouyer 	struct siop_common_cmd *siop_cmd;
    865       1.35   bouyer 	int offset;
    866       1.35   bouyer {
    867       1.35   bouyer 	scr_table_t *table;
    868       1.35   bouyer 	int i;
    869       1.35   bouyer 
    870       1.35   bouyer 	if ((siop_cmd->xs->xs_control & (XS_CTL_DATA_OUT | XS_CTL_DATA_IN))
    871       1.35   bouyer 	    == 0)
    872       1.35   bouyer 	    return; /* no data to transfer */
    873       1.35   bouyer 
    874       1.35   bouyer 	/*
    875       1.35   bouyer 	 * update resid. First account for the table entries which have
    876       1.35   bouyer 	 * been fully completed.
    877       1.35   bouyer 	 */
    878       1.35   bouyer 	for (i = 0; i < offset; i++)
    879       1.35   bouyer 		siop_cmd->xs->resid -=
    880       1.35   bouyer 		    le32toh(siop_cmd->siop_tables->data[i].count);
    881       1.35   bouyer 	/*
    882       1.35   bouyer 	 * if CMDFL_RESID is set, the last table (pointed by offset) is a
    883       1.35   bouyer 	 * partial transfers. If not, offset points to the entry folloing
    884       1.35   bouyer 	 * the last full transfer.
    885       1.35   bouyer 	 */
    886       1.35   bouyer 	if (siop_cmd->flags & CMDFL_RESID) {
    887       1.35   bouyer 		table = &siop_cmd->siop_tables->data[offset];
    888       1.35   bouyer 		siop_cmd->xs->resid -= le32toh(table->count) - siop_cmd->resid;
    889       1.35   bouyer 	}
    890        1.1   bouyer }
    891        1.1   bouyer 
    892       1.36   bouyer int
    893       1.36   bouyer siop_iwr(siop_cmd)
    894       1.36   bouyer 	struct siop_common_cmd *siop_cmd;
    895       1.36   bouyer {
    896       1.36   bouyer 	int offset;
    897       1.36   bouyer 	scr_table_t *table; /* table with IWR */
    898       1.36   bouyer 	struct siop_common_softc *sc = siop_cmd->siop_sc;
    899       1.36   bouyer 	/* handle ignore wide residue messages */
    900       1.36   bouyer 
    901       1.36   bouyer 	/* if target isn't wide, reject */
    902       1.36   bouyer 	if ((siop_cmd->siop_target->flags & TARF_ISWIDE) == 0) {
    903       1.36   bouyer 		siop_cmd->siop_tables->t_msgout.count= htole32(1);
    904       1.36   bouyer 		siop_cmd->siop_tables->msg_out[0] = MSG_MESSAGE_REJECT;
    905       1.36   bouyer 		return SIOP_NEG_MSGOUT;
    906       1.36   bouyer 	}
    907       1.36   bouyer 	/* get index of current command in table */
    908       1.36   bouyer 	offset = bus_space_read_1(sc->sc_rt, sc->sc_rh, SIOP_SCRATCHA + 1);
    909       1.36   bouyer 	/*
    910       1.36   bouyer 	 * if the current table did complete, we're now pointing at the
    911       1.36   bouyer 	 * next one. Go back one if we didn't see a phase mismatch.
    912       1.36   bouyer 	 */
    913       1.36   bouyer 	if ((siop_cmd->flags & CMDFL_RESID) == 0)
    914       1.36   bouyer 		offset--;
    915       1.36   bouyer 	table = &siop_cmd->siop_tables->data[offset];
    916       1.36   bouyer 
    917       1.36   bouyer 	if ((siop_cmd->flags & CMDFL_RESID) == 0) {
    918       1.36   bouyer 		if (le32toh(table->count) & 1) {
    919       1.36   bouyer 			/* we really got the number of bytes we expected */
    920       1.36   bouyer 			return SIOP_NEG_ACK;
    921       1.36   bouyer 		} else {
    922       1.36   bouyer 			/*
    923       1.36   bouyer 			 * now we really had a short xfer, by one byte.
    924       1.36   bouyer 			 * handle it just as if we had a phase mistmatch
    925       1.36   bouyer 			 * (there is a resid of one for this table).
    926       1.36   bouyer 			 * Update scratcha1 to reflect the fact that
    927       1.36   bouyer 			 * this xfer isn't complete.
    928       1.36   bouyer 			 */
    929       1.36   bouyer 			 siop_cmd->flags |= CMDFL_RESID;
    930       1.36   bouyer 			 siop_cmd->resid = 1;
    931       1.36   bouyer 			 bus_space_write_1(sc->sc_rt, sc->sc_rh,
    932       1.36   bouyer 			     SIOP_SCRATCHA + 1, offset);
    933       1.36   bouyer 			 return SIOP_NEG_ACK;
    934       1.36   bouyer 		}
    935       1.36   bouyer 	} else {
    936       1.36   bouyer 		/*
    937       1.36   bouyer 		 * we already have a short xfer for this table; it's
    938       1.36   bouyer 		 * just one byte less than we though it was
    939       1.36   bouyer 		 */
    940       1.36   bouyer 		siop_cmd->resid--;
    941       1.36   bouyer 		return SIOP_NEG_ACK;
    942       1.36   bouyer 	}
    943       1.36   bouyer }
    944       1.36   bouyer 
    945        1.1   bouyer void
    946        1.1   bouyer siop_clearfifo(sc)
    947       1.17   bouyer 	struct siop_common_softc *sc;
    948        1.1   bouyer {
    949        1.1   bouyer 	int timeout = 0;
    950        1.1   bouyer 	int ctest3 = bus_space_read_1(sc->sc_rt, sc->sc_rh, SIOP_CTEST3);
    951        1.1   bouyer 
    952        1.1   bouyer #ifdef DEBUG_INTR
    953        1.1   bouyer 	printf("DMA fifo not empty !\n");
    954        1.1   bouyer #endif
    955        1.1   bouyer 	bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_CTEST3,
    956        1.1   bouyer 	    ctest3 | CTEST3_CLF);
    957        1.1   bouyer 	while ((bus_space_read_1(sc->sc_rt, sc->sc_rh, SIOP_CTEST3) &
    958        1.1   bouyer 	    CTEST3_CLF) != 0) {
    959        1.1   bouyer 		delay(1);
    960        1.1   bouyer 		if (++timeout > 1000) {
    961        1.1   bouyer 			printf("clear fifo failed\n");
    962        1.1   bouyer 			bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_CTEST3,
    963        1.1   bouyer 			    bus_space_read_1(sc->sc_rt, sc->sc_rh,
    964        1.1   bouyer 			    SIOP_CTEST3) & ~CTEST3_CLF);
    965        1.1   bouyer 			return;
    966        1.1   bouyer 		}
    967        1.1   bouyer 	}
    968        1.3   bouyer }
    969        1.3   bouyer 
    970        1.3   bouyer int
    971        1.3   bouyer siop_modechange(sc)
    972       1.17   bouyer 	struct siop_common_softc *sc;
    973        1.3   bouyer {
    974        1.3   bouyer 	int retry;
    975       1.27   bouyer 	int sist0, sist1, stest2;
    976        1.3   bouyer 	for (retry = 0; retry < 5; retry++) {
    977        1.3   bouyer 		/*
    978        1.3   bouyer 		 * datasheet says to wait 100ms and re-read SIST1,
    979       1.14   bouyer 		 * to check that DIFFSENSE is stable.
    980        1.3   bouyer 		 * We may delay() 5 times for  100ms at interrupt time;
    981        1.3   bouyer 		 * hopefully this will not happen often.
    982        1.3   bouyer 		 */
    983        1.3   bouyer 		delay(100000);
    984        1.3   bouyer 		sist0 = bus_space_read_1(sc->sc_rt, sc->sc_rh, SIOP_SIST0);
    985        1.3   bouyer 		sist1 = bus_space_read_1(sc->sc_rt, sc->sc_rh, SIOP_SIST1);
    986        1.3   bouyer 		if (sist1 & SIEN1_SBMC)
    987        1.3   bouyer 			continue; /* we got an irq again */
    988       1.27   bouyer 		sc->mode = bus_space_read_1(sc->sc_rt, sc->sc_rh, SIOP_STEST4) &
    989        1.3   bouyer 		    STEST4_MODE_MASK;
    990        1.3   bouyer 		stest2 = bus_space_read_1(sc->sc_rt, sc->sc_rh, SIOP_STEST2);
    991       1.27   bouyer 		switch(sc->mode) {
    992        1.3   bouyer 		case STEST4_MODE_DIF:
    993        1.3   bouyer 			printf("%s: switching to differential mode\n",
    994        1.3   bouyer 			    sc->sc_dev.dv_xname);
    995        1.3   bouyer 			bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_STEST2,
    996        1.3   bouyer 			    stest2 | STEST2_DIF);
    997        1.3   bouyer 			break;
    998        1.3   bouyer 		case STEST4_MODE_SE:
    999        1.3   bouyer 			printf("%s: switching to single-ended mode\n",
   1000        1.3   bouyer 			    sc->sc_dev.dv_xname);
   1001        1.3   bouyer 			bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_STEST2,
   1002        1.3   bouyer 			    stest2 & ~STEST2_DIF);
   1003        1.3   bouyer 			break;
   1004        1.3   bouyer 		case STEST4_MODE_LVD:
   1005        1.3   bouyer 			printf("%s: switching to LVD mode\n",
   1006        1.3   bouyer 			    sc->sc_dev.dv_xname);
   1007        1.3   bouyer 			bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_STEST2,
   1008        1.3   bouyer 			    stest2 & ~STEST2_DIF);
   1009        1.3   bouyer 			break;
   1010        1.3   bouyer 		default:
   1011        1.3   bouyer 			printf("%s: invalid SCSI mode 0x%x\n",
   1012       1.27   bouyer 			    sc->sc_dev.dv_xname, sc->mode);
   1013        1.3   bouyer 			return 0;
   1014        1.3   bouyer 		}
   1015        1.3   bouyer 		return 1;
   1016        1.3   bouyer 	}
   1017        1.3   bouyer 	printf("%s: timeout waiting for DIFFSENSE to stabilise\n",
   1018        1.3   bouyer 	    sc->sc_dev.dv_xname);
   1019        1.3   bouyer 	return 0;
   1020        1.6   bouyer }
   1021        1.6   bouyer 
   1022        1.6   bouyer void
   1023        1.6   bouyer siop_resetbus(sc)
   1024       1.17   bouyer 	struct siop_common_softc *sc;
   1025        1.6   bouyer {
   1026        1.6   bouyer 	int scntl1;
   1027        1.6   bouyer 	scntl1 = bus_space_read_1(sc->sc_rt, sc->sc_rh, SIOP_SCNTL1);
   1028        1.6   bouyer 	bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_SCNTL1,
   1029        1.6   bouyer 	    scntl1 | SCNTL1_RST);
   1030        1.6   bouyer 	/* minimum 25 us, more time won't hurt */
   1031        1.6   bouyer 	delay(100);
   1032        1.6   bouyer 	bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_SCNTL1, scntl1);
   1033       1.17   bouyer }
   1034       1.17   bouyer 
   1035       1.17   bouyer void
   1036       1.17   bouyer siop_update_xfer_mode(sc, target)
   1037       1.17   bouyer 	struct siop_common_softc *sc;
   1038       1.17   bouyer 	int target;
   1039       1.17   bouyer {
   1040       1.17   bouyer 	struct siop_common_target *siop_target = sc->targets[target];
   1041       1.17   bouyer 	struct scsipi_xfer_mode xm;
   1042       1.17   bouyer 
   1043       1.17   bouyer 	xm.xm_target = target;
   1044       1.17   bouyer 	xm.xm_mode = 0;
   1045       1.17   bouyer 	xm.xm_period = 0;
   1046       1.17   bouyer 	xm.xm_offset = 0;
   1047       1.26   bouyer 
   1048       1.17   bouyer 
   1049       1.17   bouyer 	if (siop_target->flags & TARF_ISWIDE)
   1050       1.17   bouyer 		xm.xm_mode |= PERIPH_CAP_WIDE16;
   1051       1.17   bouyer 	if (siop_target->period) {
   1052       1.17   bouyer 		xm.xm_period = siop_target->period;
   1053       1.17   bouyer 		xm.xm_offset = siop_target->offset;
   1054       1.17   bouyer 		xm.xm_mode |= PERIPH_CAP_SYNC;
   1055       1.17   bouyer 	}
   1056       1.28   bouyer 	if (siop_target->flags & TARF_TAG) {
   1057       1.28   bouyer 	/* 1010 workaround: can't do disconnect if not wide, so can't do tag */
   1058       1.28   bouyer 		if ((sc->features & SF_CHIP_GEBUG) == 0 ||
   1059       1.28   bouyer 		    (sc->targets[target]->flags & TARF_ISWIDE))
   1060       1.28   bouyer 			xm.xm_mode |= PERIPH_CAP_TQING;
   1061       1.28   bouyer 	}
   1062       1.28   bouyer 
   1063       1.17   bouyer 	scsipi_async_event(&sc->sc_chan, ASYNC_EVENT_XFER_MODE, &xm);
   1064        1.1   bouyer }
   1065