- Use MI ADAPTER_REQ_SET_XFER_MODE callback.
- Nuke some magic numbers.
This commit is contained in:
tsutsui
parent
1dae310858
commit
689089f7a9
126
sys/dev/ic/iha.c
126
sys/dev/ic/iha.c
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@ -1,4 +1,4 @@
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/* $NetBSD: iha.c,v 1.12 2001/11/17 21:26:12 tsutsui Exp $ */
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/* $NetBSD: iha.c,v 1.13 2001/11/18 14:33:10 tsutsui Exp $ */
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/*
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* Initio INI-9xxxU/UW SCSI Device Driver
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*
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@ -48,7 +48,7 @@
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: iha.c,v 1.12 2001/11/17 21:26:12 tsutsui Exp $");
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__KERNEL_RCSID(0, "$NetBSD: iha.c,v 1.13 2001/11/18 14:33:10 tsutsui Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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@ -74,7 +74,7 @@ __KERNEL_RCSID(0, "$NetBSD: iha.c,v 1.12 2001/11/17 21:26:12 tsutsui Exp $");
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* SCSI Rate Table, indexed by FLAG_SCSI_RATE field of
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* tcs flags.
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*/
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static const u_int8_t iha_rate_tbl[8] = {
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static const u_int8_t iha_rate_tbl[] = {
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/* fast 20 */
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/* nanosecond divide by 4 */
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12, /* 50ns, 20M */
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@ -86,6 +86,7 @@ static const u_int8_t iha_rate_tbl[8] = {
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50, /* 200ns, 5M */
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62 /* 250ns, 4M */
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};
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#define IHA_MAX_PERIOD 62
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#ifdef notused
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static u_int16_t eeprom_default[EEPROM_SIZE] = {
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@ -228,6 +229,7 @@ static void iha_abort_xs(struct iha_softc *, struct scsipi_xfer *, u_int8_t);
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void iha_scsipi_request(struct scsipi_channel *, scsipi_adapter_req_t,
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void *arg);
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void iha_update_xfer_mode(struct iha_softc *, int);
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/*
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* iha_intr - the interrupt service routine for the iha driver
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@ -352,7 +354,30 @@ iha_scsipi_request(chan, req, arg)
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return; /* XXX */
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case ADAPTER_REQ_SET_XFER_MODE:
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return; /* XXX */
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{
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struct tcs *tcs;
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struct scsipi_xfer_mode *xm = arg;
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tcs = &sc->sc_tcs[xm->xm_target];
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if ((xm->xm_mode & PERIPH_CAP_WIDE16) != 0 &&
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(tcs->flags & FLAG_NO_WIDE) == 0)
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tcs->flags &= ~(FLAG_WIDE_DONE|FLAG_SYNC_DONE);
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if ((xm->xm_mode & PERIPH_CAP_SYNC) != 0 &&
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(tcs->flags & FLAG_NO_SYNC) == 0)
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tcs->flags &= ~FLAG_SYNC_DONE;
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/*
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* If we're not going to negotiate, send the
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* notification now, since it won't happen later.
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*/
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if ((tcs->flags & (FLAG_WIDE_DONE|FLAG_SYNC_DONE)) ==
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(FLAG_WIDE_DONE|FLAG_SYNC_DONE))
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iha_update_xfer_mode(sc, xm->xm_target);
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return;
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}
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}
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}
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@ -1997,13 +2022,16 @@ iha_msgin_extended(sc)
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flags = sc->sc_actscb->tcs->flags;
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if ((flags & FLAG_NO_WIDE) != 0)
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sc->sc_msg[2] = 0; /* Offer async xfers only */
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/* Offer 8bit xfers only */
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sc->sc_msg[2] = MSG_EXT_WDTR_BUS_8_BIT;
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else if (sc->sc_msg[2] > 2) /* BAD MSG: 2 is max value */
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else if (sc->sc_msg[2] > MSG_EXT_WDTR_BUS_32_BIT)
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/* BAD MSG */
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return (iha_msgout_reject(sc));
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else if (sc->sc_msg[2] == 2) /* a request for 32 bit xfers*/
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sc->sc_msg[2] = 1; /* Offer 16 instead */
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else if (sc->sc_msg[2] == MSG_EXT_WDTR_BUS_32_BIT)
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/* Offer 16bit instead */
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sc->sc_msg[2] = MSG_EXT_WDTR_BUS_16_BIT;
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else {
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iha_wide_done(sc);
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@ -2041,29 +2069,31 @@ iha_msgin_sdtr(sc)
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default_period = iha_rate_tbl[flags & FLAG_SCSI_RATE];
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if (sc->sc_msg[3] == 0) /* target offered async only. Accept it. */
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if (sc->sc_msg[3] == 0)
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/* target offered async only. Accept it. */
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return (0);
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newoffer = 0;
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if ((flags & FLAG_NO_SYNC) != 0) {
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sc->sc_msg[3] = 0;
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newoffer = 1;
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newoffer = 1;
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}
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if (sc->sc_msg[3] > IHA_MAX_OFFSET) {
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sc->sc_msg[3] = IHA_MAX_OFFSET;
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newoffer = 1;
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newoffer = 1;
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}
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if (sc->sc_msg[2] < default_period) {
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sc->sc_msg[2] = default_period;
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newoffer = 1;
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newoffer = 1;
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}
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if (sc->sc_msg[2] >= 59) { /* XXX magic */
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if (sc->sc_msg[2] > IHA_MAX_PERIOD) {
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/* Use async */
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sc->sc_msg[3] = 0;
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newoffer = 1;
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newoffer = 1;
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}
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return (newoffer);
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@ -2156,13 +2186,13 @@ static int
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iha_msgout_sdtr(sc)
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struct iha_softc *sc;
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{
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int rateindex;
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struct tcs *tcs = sc->sc_actscb->tcs;
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rateindex = sc->sc_actscb->tcs->flags & FLAG_SCSI_RATE;
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tcs->flags |= FLAG_SYNC_DONE;
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sc->sc_msg[0] = MSG_EXT_SDTR_LEN;
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sc->sc_msg[1] = MSG_EXT_SDTR;
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sc->sc_msg[2] = iha_rate_tbl[rateindex];
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sc->sc_msg[2] = iha_rate_tbl[tcs->flags & FLAG_SCSI_RATE];
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sc->sc_msg[3] = IHA_MAX_OFFSET; /* REQ/ACK */
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return (iha_msgout_extended(sc));
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@ -2187,6 +2217,8 @@ iha_wide_done(sc)
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tcs->flags &= ~FLAG_SYNC_DONE;
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tcs->flags |= FLAG_WIDE_DONE;
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iha_update_xfer_mode(sc, sc->sc_actscb->target);
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bus_space_write_1(iot, ioh, TUL_SCONFIG0, tcs->sconfig0);
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bus_space_write_1(iot, ioh, TUL_SYNCM, tcs->syncm);
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}
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@ -2200,26 +2232,26 @@ iha_sync_done(sc)
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struct tcs *tcs = sc->sc_actscb->tcs;
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int i;
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if ((tcs->flags & FLAG_SYNC_DONE) == 0) {
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tcs->period = sc->sc_msg[2];
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tcs->offset = sc->sc_msg[3];
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if (tcs->offset != 0) {
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tcs->syncm |= tcs->offset;
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tcs->period = sc->sc_msg[2];
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tcs->offset = sc->sc_msg[3];
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if (tcs->offset != 0) {
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tcs->syncm |= tcs->offset;
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/* pick the highest possible rate */
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for (i = 0; i < 8; i++)
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if (iha_rate_tbl[i] >= tcs->period)
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break;
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/* pick the highest possible rate */
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for (i = 0; i < sizeof(iha_rate_tbl); i++)
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if (iha_rate_tbl[i] >= tcs->period)
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break;
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tcs->syncm |= (i << 4);
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tcs->sconfig0 |= ALTPD;
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}
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tcs->flags |= FLAG_SYNC_DONE;
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bus_space_write_1(iot, ioh, TUL_SCONFIG0, tcs->sconfig0);
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bus_space_write_1(iot, ioh, TUL_SYNCM, tcs->syncm);
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tcs->syncm |= (i << 4);
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tcs->sconfig0 |= ALTPD;
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}
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tcs->flags |= FLAG_SYNC_DONE;
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iha_update_xfer_mode(sc, sc->sc_actscb->target);
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bus_space_write_1(iot, ioh, TUL_SCONFIG0, tcs->sconfig0);
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bus_space_write_1(iot, ioh, TUL_SYNCM, tcs->syncm);
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}
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void
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@ -2850,3 +2882,29 @@ iha_reset_tcs(tcs, config0)
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tcs->syncm = 0;
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tcs->sconfig0 = config0;
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}
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void
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iha_update_xfer_mode(sc, target)
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struct iha_softc *sc;
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int target;
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{
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struct tcs *tcs = &sc->sc_tcs[target];
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struct scsipi_xfer_mode xm;
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xm.xm_target = target;
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xm.xm_mode = 0;
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xm.xm_period = 0;
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xm.xm_offset = 0;
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if (tcs->syncm & PERIOD_WIDE_SCSI)
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xm.xm_mode |= PERIPH_CAP_WIDE16;
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if (tcs->period) {
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xm.xm_mode |= PERIPH_CAP_SYNC;
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xm.xm_period = tcs->period;
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xm.xm_offset = tcs->offset;
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}
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scsipi_async_event(&sc->sc_channel, ASYNC_EVENT_XFER_MODE, &xm);
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}
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