Implement polled command mode, and use it for writing system dump
and for initial autoconf probes; the latter eliminates need for deferred configuration (and makes dmesg a bit nicer). g/c EDF_IODONE flag - protect against interrupt by calling tsleep() at splbio in worker thread g/c unneeded stuff, improve some autoconf messages
This commit is contained in:
jdolecek
parent
63ee3f7941
commit
5b3932d176
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@ -1,4 +1,4 @@
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/* $NetBSD: ed_mca.c,v 1.5 2001/04/23 06:10:08 jdolecek Exp $ */
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/* $NetBSD: ed_mca.c,v 1.6 2001/05/04 12:58:34 jdolecek Exp $ */
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/*
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* Copyright (c) 2001 The NetBSD Foundation, Inc.
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@ -102,7 +102,9 @@ static void __edstart __P((struct ed_softc*, struct buf *));
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static void bad144intern __P((struct ed_softc *));
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static void edworker __P((void *));
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static void ed_spawn_worker __P((void *));
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static void edmcadone __P((struct ed_softc *));
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static void edmcadone __P((struct ed_softc *, struct buf *));
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static void ed_bio __P((struct ed_softc *, int, int));
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static void ed_bio_done __P((struct ed_softc *));
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static struct dkdriver eddkdriver = { edmcastrategy };
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@ -118,16 +120,17 @@ ed_mca_probe(parent, match, aux)
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u_int16_t cmd_args[2];
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struct edc_mca_softc *sc = (void *) parent;
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struct ed_attach_args *eda = (void *) aux;
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int found = 1;
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/*
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* Get Device Configuration (09).
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*/
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cmd_args[0] = 6; /* Options: 00s110, s: 0=Physical 1=Pseudo */
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cmd_args[0] = 14; /* Options: 00s110, s: 0=Physical 1=Pseudo */
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cmd_args[1] = 0;
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if (edc_run_cmd(sc, CMD_GET_DEV_CONF, eda->sc_devno, cmd_args, 2, 0))
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return (0);
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if (edc_run_cmd(sc, CMD_GET_DEV_CONF, eda->sc_devno, cmd_args, 2, 0, 1))
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found = 0;
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return (1);
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return (found);
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}
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static void
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@ -162,13 +165,13 @@ ed_mca_attach(parent, self, aux)
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ed->cyl, ed->heads, ed->sectors,
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ed->sc_capacity);
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printf("%s: %u spares/cyl, %s.%s.%s.%s.%s\n",
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printf("%s: %u spares/cyl, %s, %s, %s, %s, %s\n",
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ed->sc_dev.dv_xname, ed->spares,
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(ed->drv_flags & (1 << 0)) ? "NoRetries" : "Retries",
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(ed->drv_flags & (1 << 1)) ? "Removable" : "Fixed",
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(ed->drv_flags & (1 << 2)) ? "SkewedFormat" : "NoSkew",
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(ed->drv_flags & (1 << 3)) ? "ZeroDefect" : "Defects",
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(ed->drv_flags & (1 << 4)) ? "InvalidSecondary" : "SeconOK"
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(ed->drv_flags & (1 << 4)) ? "InvalidSecondary" : "SecondaryOK"
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);
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/* Create a DMA map for mapping individual transfer bufs */
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@ -226,6 +229,8 @@ ed_mca_attach(parent, self, aux)
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config_pending_incr();
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kthread_create(ed_spawn_worker, (void *) ed);
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ed->sc_flags |= EDF_INIT;
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}
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void
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@ -322,9 +327,7 @@ done:
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}
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static void
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__edstart(ed, bp)
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struct ed_softc *ed;
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struct buf *bp;
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ed_bio(struct ed_softc *ed, int async, int poll)
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{
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u_int16_t cmd_args[4];
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int error=0;
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@ -333,23 +336,16 @@ __edstart(ed, bp)
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u_int8_t head;
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u_int8_t sector;
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WDCDEBUG_PRINT(("__edstart %s (%s): %lu %lu %u\n", ed->sc_dev.dv_xname,
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(bp->b_flags & B_READ) ? "read" : "write",
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bp->b_bcount, bp->b_resid, bp->b_rawblkno),
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DEBUG_XFERS);
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ed->sc_bp = bp;
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/* Get physical bus mapping for buf. */
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if (bus_dmamap_load(ed->sc_dmat, ed->dmamap_xfer,
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bp->b_data, bp->b_bcount, NULL,
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ed->sc_data, ed->sc_bcount, NULL,
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BUS_DMA_WAITOK|BUS_DMA_STREAMING) != 0) {
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/*
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* Use our DMA safe memory to get data to/from device.
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*/
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if ((error = bus_dmamap_load(ed->sc_dmat, ed->dmamap_xfer,
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ed->sc_dmamkva, bp->b_bcount, NULL,
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ed->sc_dmamkva, ed->sc_bcount, NULL,
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BUS_DMA_WAITOK|BUS_DMA_STREAMING)) != 0) {
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printf("%s: unable to load raw data for xfer, errno=%d\n",
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ed->sc_dev.dv_xname, error);
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@ -358,35 +354,33 @@ __edstart(ed, bp)
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ed->sc_flags |= EDF_BOUNCEBUF;
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/* If data write, copy the data to our bounce buffer. */
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if ((bp->b_flags & B_READ) == 0)
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memcpy(ed->sc_dmamkva, bp->b_data, bp->b_bcount);
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if (!ed->sc_read)
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memcpy(ed->sc_dmamkva, ed->sc_data, ed->sc_bcount);
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}
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ed->sc_flags |= EDF_DMAMAP_LOADED;
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track = bp->b_rawblkno / ed->sectors;
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track = ed->sc_rawblkno / ed->sectors;
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head = track % ed->heads;
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cyl = track / ed->heads;
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sector = bp->b_rawblkno % ed->sectors;
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sector = ed->sc_rawblkno % ed->sectors;
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WDCDEBUG_PRINT(("__edstart %s: map: %u %u %u\n", ed->sc_dev.dv_xname,
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cyl, sector, head),
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DEBUG_XFERS);
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/* Instrumentation. */
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disk_busy(&ed->sc_dk);
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ed->sc_flags |= EDF_DK_BUSY;
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mca_disk_busy();
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/* Read or Write Data command */
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cmd_args[0] = 2; /* Options 0000010 */
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cmd_args[1] = bp->b_bcount / DEV_BSIZE;
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cmd_args[1] = ed->sc_bcount / DEV_BSIZE;
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cmd_args[2] = ((cyl & 0x1f) << 11) | (head << 5) | sector;
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cmd_args[3] = ((cyl & 0x3E0) >> 5);
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if (edc_run_cmd(ed->edc_softc,
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(bp->b_flags & B_READ) ? CMD_READ_DATA : CMD_WRITE_DATA,
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ed->sc_devno, cmd_args, 4, 1)) {
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(ed->sc_read) ? CMD_READ_DATA : CMD_WRITE_DATA,
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ed->sc_devno, cmd_args, 4, async, poll)) {
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printf("%s: data i/o command failed\n", ed->sc_dev.dv_xname);
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mca_disk_unbusy();
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error = EIO;
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}
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@ -395,13 +389,53 @@ __edstart(ed, bp)
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ed->sc_error = error;
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}
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static void
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__edstart(ed, bp)
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struct ed_softc *ed;
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struct buf *bp;
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{
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WDCDEBUG_PRINT(("__edstart %s (%s): %lu %lu %u\n", ed->sc_dev.dv_xname,
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(bp->b_flags & B_READ) ? "read" : "write",
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bp->b_bcount, bp->b_resid, bp->b_rawblkno),
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DEBUG_XFERS);
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/* Instrumentation. */
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disk_busy(&ed->sc_dk);
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ed->sc_flags |= EDF_DK_BUSY;
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ed->sc_data = bp->b_data;
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ed->sc_rawblkno = bp->b_rawblkno;
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ed->sc_bcount = bp->b_bcount;
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ed->sc_read = bp->b_flags & B_READ;
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ed_bio(ed, 1, 0);
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}
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static void
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edmcadone(ed)
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ed_bio_done(ed)
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struct ed_softc *ed;
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{
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struct buf *bp = ed->sc_bp;
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/*
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* If read transfer finished without error and using a bounce
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* buffer, copy the data to buf.
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*/
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if (ed->sc_error == 0 && (ed->sc_flags & EDF_BOUNCEBUF) && ed->sc_read)
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memcpy(ed->sc_data, ed->sc_dmamkva, ed->sc_bcount);
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ed->sc_flags &= ~EDF_BOUNCEBUF;
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/* Unload buf from DMA map */
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if (ed->sc_flags & EDF_DMAMAP_LOADED) {
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bus_dmamap_unload(ed->sc_dmat, ed->dmamap_xfer);
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ed->sc_flags &= ~EDF_DMAMAP_LOADED;
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}
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mca_disk_unbusy();
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}
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static void
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edmcadone(ed, bp)
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struct ed_softc *ed;
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struct buf *bp;
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{
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WDCDEBUG_PRINT(("eddone %s\n", ed->sc_dev.dv_xname),
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DEBUG_XFERS);
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@ -413,31 +447,14 @@ edmcadone(ed)
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bp->b_resid = ed->sc_status_block[SB_RESBLKCNT_IDX] * DEV_BSIZE;
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}
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/*
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* If read transfer finished without error and using a bounce
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* buffer, copy the data to buf.
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*/
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if ((bp->b_flags & B_ERROR) == 0 && (ed->sc_flags & EDF_BOUNCEBUF)
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&& (bp->b_flags & B_READ)) {
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memcpy(bp->b_data, ed->sc_dmamkva, bp->b_bcount);
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}
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ed->sc_flags &= ~EDF_BOUNCEBUF;
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/* Unload buf from DMA map */
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if (ed->sc_flags & EDF_DMAMAP_LOADED) {
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bus_dmamap_unload(ed->sc_dmat, ed->dmamap_xfer);
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ed->sc_flags &= ~EDF_DMAMAP_LOADED;
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}
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ed_bio_done(ed);
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/* If disk was busied, unbusy it now */
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if (ed->sc_flags & EDF_DK_BUSY) {
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disk_unbusy(&ed->sc_dk, (bp->b_bcount - bp->b_resid));
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ed->sc_flags &= ~EDF_DK_BUSY;
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mca_disk_unbusy();
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}
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ed->sc_flags &= ~EDF_IODONE;
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#if NRND > 0
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rnd_add_uint32(&ed->rnd_source, bp->b_blkno);
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#endif
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@ -506,7 +523,7 @@ edmcaopen(dev, flag, fmt, p)
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WDCDEBUG_PRINT(("edopen\n"), DEBUG_FUNCS);
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wd = device_lookup(&ed_cd, DISKUNIT(dev));
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if (wd == NULL)
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if (wd == NULL || (wd->sc_flags & EDF_INIT) == 0)
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return (ENXIO);
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if ((error = ed_lock(wd)) != 0)
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@ -898,8 +915,9 @@ edmcasize(dev)
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}
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/* #define WD_DUMP_NOT_TRUSTED if you just want to watch */
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static int wddoingadump = 0;
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static int wddumprecalibrated = 0;
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static int eddoingadump = 0;
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static int eddumprecalibrated = 0;
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static int eddumpmulti = 1;
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/*
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* Dump core after a system crash.
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@ -911,30 +929,28 @@ edmcadump(dev, blkno, va, size)
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caddr_t va;
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size_t size;
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{
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struct ed_softc *wd; /* disk unit to do the I/O */
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struct ed_softc *ed; /* disk unit to do the I/O */
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struct disklabel *lp; /* disk's disklabel */
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int part; // , err;
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int nblks; /* total number of sectors left to write */
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/* Check if recursive dump; if so, punt. */
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if (wddoingadump)
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if (eddoingadump)
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return EFAULT;
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wddoingadump = 1;
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eddoingadump = 1;
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wd = device_lookup(&ed_cd, DISKUNIT(dev));
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if (wd == NULL)
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ed = device_lookup(&ed_cd, DISKUNIT(dev));
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if (ed == NULL)
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return (ENXIO);
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part = DISKPART(dev);
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#if 0
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/* Make sure it was initialized. */
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if (wd->drvp->state < READY)
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if ((ed->sc_flags & EDF_INIT) == 0)
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return ENXIO;
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#endif
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/* Convert to disk sectors. Request must be a multiple of size. */
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lp = wd->sc_dk.dk_label;
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lp = ed->sc_dk.dk_label;
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if ((size % lp->d_secsize) != 0)
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return EFAULT;
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nblks = size / lp->d_secsize;
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@ -948,50 +964,34 @@ edmcadump(dev, blkno, va, size)
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blkno += lp->d_partitions[part].p_offset;
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/* Recalibrate, if first dump transfer. */
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if (wddumprecalibrated == 0) {
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wddumprecalibrated = 1;
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if (eddumprecalibrated == 0) {
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eddumprecalibrated = 1;
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eddumpmulti = 8;
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#if 0
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wd->drvp->state = RESET;
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#endif
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}
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while (nblks > 0) {
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#if 0
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wd->sc_wdc_bio.blkno = blkno;
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wd->sc_wdc_bio.flags = ATA_POLL;
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wd->sc_wdc_bio.bcount = lp->d_secsize;
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wd->sc_wdc_bio.databuf = va;
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#ifndef WD_DUMP_NOT_TRUSTED
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switch (wdc_ata_bio(wd->drvp, &wd->sc_wdc_bio)) {
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case WDC_TRY_AGAIN:
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panic("wddump: try again");
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break;
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case WDC_QUEUED:
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panic("wddump: polled command has been queued");
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break;
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case WDC_COMPLETE:
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break;
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}
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if (err != 0) {
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printf("\n");
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return err;
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}
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#else /* WD_DUMP_NOT_TRUSTED */
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/* Let's just talk about this first... */
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printf("ed%d: dump addr 0x%x, cylin %d, head %d, sector %d\n",
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unit, va, cylin, head, sector);
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delay(500 * 1000); /* half a second */
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#endif
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#endif /* 0 */
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ed->sc_data = va;
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ed->sc_rawblkno = blkno;
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ed->sc_bcount = min(nblks, eddumpmulti) * lp->d_secsize;
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ed->sc_read = 0;
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ed_bio(ed, 0, 1);
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if (ed->sc_error)
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return (ed->sc_error);
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ed_bio_done(ed);
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/* update block count */
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nblks -= 1;
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blkno += 1;
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va += lp->d_secsize;
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nblks -= min(nblks, eddumpmulti);
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blkno += min(nblks, eddumpmulti);
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va += min(nblks, eddumpmulti) * lp->d_secsize;
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}
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wddoingadump = 0;
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return (ESPIPE);
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eddoingadump = 0;
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return (0);
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}
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#ifdef HAS_BAD144_HANDLING
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@ -1032,7 +1032,8 @@ ed_get_params(ed)
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*/
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cmd_args[0] = 14; /* Options: 00s110, s: 0=Physical 1=Pseudo */
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cmd_args[1] = 0;
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if (edc_run_cmd(ed->edc_softc, CMD_GET_DEV_CONF, ed->sc_devno, cmd_args, 2, 0))
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if (edc_run_cmd(ed->edc_softc, CMD_GET_DEV_CONF, ed->sc_devno,
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cmd_args, 2, 0, 1))
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return (1);
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ed->spares = ed->sc_status_block[1] >> 8;
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@ -1109,21 +1110,16 @@ edworker(arg)
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ed->sc_error = 0;
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s = splbio();
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__edstart(ed, bp);
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splx(s);
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/*
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* Wait until the command executes; edc_intr() wakes
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* us up.
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*/
|
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if (ed->sc_error == 0
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&& (ed->sc_flags & EDF_IODONE) == 0) {
|
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if (ed->sc_error == 0)
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(void)tsleep(&ed->edc_softc, PRIBIO, "edwrk",0);
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edc_cmd_wait(ed->edc_softc, ed->sc_devno, 5);
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}
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/* Handle i/o results */
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s = splbio();
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edmcadone(ed);
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edmcadone(ed, bp);
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splx(s);
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}
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}
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|
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|
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@ -1,4 +1,4 @@
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/* $NetBSD: edc_mca.c,v 1.8 2001/04/25 02:33:09 simonb Exp $ */
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/* $NetBSD: edc_mca.c,v 1.9 2001/05/04 12:58:34 jdolecek Exp $ */
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|
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/*
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* Copyright (c) 2001 The NetBSD Foundation, Inc.
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|
|
@ -41,7 +41,6 @@
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* for MCA rev. 2.2 in hands, thanks to Scott Telford <st@epcc.ed.ac.uk>.
|
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*
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* TODO:
|
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* - finish support for kernel memory crash dump
|
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* - move the MCA DMA controller (edc_setup_dma()) goo to device driver
|
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* independant location
|
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* - improve error recovery
|
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|
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@ -82,7 +81,8 @@
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#include <dev/mca/edvar.h>
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#include <dev/mca/edcvar.h>
|
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|
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#define DASD_MAXDEVS 7
|
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#define EDC_ATTN_MAXTRIES 10000 /* How many times check for unbusy */
|
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|
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struct edc_mca_softc {
|
||||
struct device sc_dev;
|
||||
|
||||
|
|
@ -99,10 +99,9 @@ struct edc_mca_softc {
|
|||
|
||||
int sc_flags;
|
||||
#define DASD_QUIET 0x01 /* don't dump cmd error info */
|
||||
#define DASD_MAXDEVS 8
|
||||
struct ed_softc *sc_ed[DASD_MAXDEVS];
|
||||
|
||||
int sc_maxdevs; /* maximum # of devs supported by
|
||||
* controller */
|
||||
struct ed_softc sc_controller;
|
||||
};
|
||||
|
||||
int edc_mca_probe __P((struct device *, struct cfdata *, void *));
|
||||
|
|
@ -116,11 +115,11 @@ struct cfattach edc_mca_ca = {
|
|||
#define DMA_EXEC 0x1A
|
||||
|
||||
static int edc_intr __P((void *));
|
||||
static void edc_attach_ed __P((struct device *));
|
||||
static void edc_dump_status_block __P((struct edc_mca_softc *, int, int));
|
||||
static int edc_setup_dma __P((struct edc_mca_softc *, struct buf *,
|
||||
static int edc_setup_dma __P((struct edc_mca_softc *, int,
|
||||
bus_addr_t, bus_size_t));
|
||||
static int edc_do_attn __P((struct edc_mca_softc *, int, int, int));
|
||||
static int edc_cmd_wait __P((struct edc_mca_softc *, int, int, int));
|
||||
|
||||
int
|
||||
edc_mca_probe(parent, match, aux)
|
||||
|
|
@ -149,6 +148,9 @@ edc_mca_attach(parent, self, aux)
|
|||
int pos2, pos3, pos4;
|
||||
int irq, drq, iobase;
|
||||
const char *typestr;
|
||||
struct ed_softc *ed;
|
||||
struct ed_attach_args eda;
|
||||
int devno, maxdevs;
|
||||
|
||||
pos2 = mca_conf_read(ma->ma_mc, ma->ma_slot, 2);
|
||||
pos3 = mca_conf_read(ma->ma_mc, ma->ma_slot, 3);
|
||||
|
|
@ -260,26 +262,22 @@ edc_mca_attach(parent, self, aux)
|
|||
* controllers support two disks.
|
||||
*/
|
||||
if (ma->ma_id == MCA_PRODUCT_IBM_ESDIC_IG)
|
||||
sc->sc_maxdevs = 1;
|
||||
maxdevs = 1;
|
||||
else
|
||||
sc->sc_maxdevs = 2;
|
||||
maxdevs = 2;
|
||||
|
||||
/* Defer probe for individual disks until interrupts are enabled. */
|
||||
config_interrupts(self, edc_attach_ed);
|
||||
}
|
||||
|
||||
/*
|
||||
* Try to attach ed* at edc? if any configured and installed now
|
||||
* that interrupts are enabled.
|
||||
/*
|
||||
* Initialize the controller ed softc. We could do without this,
|
||||
* but absence of checks for controller devno simplifies code logic
|
||||
* somewhat.
|
||||
*/
|
||||
sc->sc_ed[DASD_DEVNO_CONTROLLER] = &sc->sc_controller;
|
||||
strcpy(sc->sc_controller.sc_dev.dv_xname, sc->sc_dev.dv_xname);/*safe*/
|
||||
|
||||
/*
|
||||
* Reset controller and attach individual disks. ed attach routine
|
||||
* uses polling so that this works with interrupts disabled.
|
||||
*/
|
||||
static void
|
||||
edc_attach_ed(self)
|
||||
struct device *self;
|
||||
{
|
||||
struct edc_mca_softc *sc = (void *) self;
|
||||
struct ed_softc *ed;
|
||||
struct ed_attach_args eda;
|
||||
int devno;
|
||||
|
||||
/* Do a reset to ensure sane state after warm boot. */
|
||||
if (bus_space_read_1(sc->sc_iot, sc->sc_ioh, BSR) & BSR_BUSY) {
|
||||
|
|
@ -293,9 +291,17 @@ edc_attach_ed(self)
|
|||
edc_do_attn(sc, ATN_RESET_ATTACHMENT, DASD_DEVNO_CONTROLLER,0);
|
||||
}
|
||||
|
||||
/* Wait until the reset completes. */
|
||||
while(bus_space_read_1(sc->sc_iot, sc->sc_ioh, BSR) & BSR_BUSY)
|
||||
delay(1);
|
||||
/*
|
||||
* Since interrupts are disabled ATM, it's necessary
|
||||
* to detect the interrupt request and call edc_intr()
|
||||
* explicitly. See also edc_run_cmd().
|
||||
*/
|
||||
while(bus_space_read_1(sc->sc_iot, sc->sc_ioh, BSR) & BSR_BUSY) {
|
||||
if (bus_space_read_1(sc->sc_iot, sc->sc_ioh, BSR) & BSR_INTR)
|
||||
edc_intr(sc);
|
||||
|
||||
delay(100);
|
||||
}
|
||||
|
||||
/*
|
||||
* Get dummy ed_softc to be used during probe. Once a disk is
|
||||
|
|
@ -309,11 +315,10 @@ edc_attach_ed(self)
|
|||
sc->sc_flags |= DASD_QUIET;
|
||||
|
||||
/* check for attached disks */
|
||||
for(devno=0; devno < sc->sc_maxdevs; devno++) {
|
||||
for(devno=0; devno < maxdevs; devno++) {
|
||||
eda.sc_devno = devno;
|
||||
eda.sc_dmat = sc->sc_dmat;
|
||||
sc->sc_ed[devno] = ed;
|
||||
sc->sc_ed[devno] =
|
||||
(void *) config_found_sm(self, &eda, NULL, NULL);
|
||||
}
|
||||
|
||||
|
|
@ -323,7 +328,19 @@ edc_attach_ed(self)
|
|||
/* cleanup */
|
||||
FREE(ed, M_TEMP);
|
||||
|
||||
/* XXX disestablish interrupt if no disks found ? */
|
||||
/*
|
||||
* Check if there are any disks attached. If not, disestablish
|
||||
* the interrupt.
|
||||
*/
|
||||
for(devno=0; devno < maxdevs; devno++) {
|
||||
if (sc->sc_ed[devno] && (sc->sc_ed[devno]->sc_flags & EDF_INIT))
|
||||
break;
|
||||
}
|
||||
if (devno == maxdevs) {
|
||||
printf("%s: disabling controller (no drives attached)\n",
|
||||
sc->sc_dev.dv_xname);
|
||||
mca_intr_disestablish(ma->ma_mc, sc->sc_ih);
|
||||
}
|
||||
}
|
||||
|
||||
void
|
||||
|
|
@ -376,19 +393,18 @@ edc_intr(arg)
|
|||
* Check the status block length against our supported maximum length
|
||||
* and fetch the data.
|
||||
*/
|
||||
if (bus_space_read_1(sc->sc_iot, sc->sc_ioh,BSR) & BSR_SIFR_FULL
|
||||
&& intr_id != ISR_RESET_COMPLETED) {
|
||||
if (bus_space_read_1(sc->sc_iot, sc->sc_ioh,BSR) & BSR_SIFR_FULL) {
|
||||
size_t len;
|
||||
int i;
|
||||
|
||||
sifr = le16toh(bus_space_read_2(sc->sc_iot, sc->sc_ioh, SIFR));
|
||||
len = (sifr & 0xff00) >> 8;
|
||||
if (len > DASD_MAX_CMD_RES_LEN) {
|
||||
printf("%s: maximum Status Length exceeded: %d > %d\n",
|
||||
#ifdef DEBUG
|
||||
if (len > DASD_MAX_CMD_RES_LEN)
|
||||
panic("%s: maximum Status Length exceeded: %d > %d",
|
||||
sc->sc_dev.dv_xname,
|
||||
len, DASD_MAX_CMD_RES_LEN);
|
||||
goto attn_eoi;
|
||||
}
|
||||
#endif
|
||||
|
||||
/* Get command code */
|
||||
cmd = sifr & SIFR_CMD_MASK;
|
||||
|
|
@ -413,7 +429,7 @@ edc_intr(arg)
|
|||
* controller to do the transfer.
|
||||
*/
|
||||
ed = sc->sc_ed[devno];
|
||||
if (!edc_setup_dma(sc, ed->sc_bp,
|
||||
if (!edc_setup_dma(sc, ed->sc_read,
|
||||
ed->dmamap_xfer->dm_segs[0].ds_addr,
|
||||
ed->dmamap_xfer->dm_segs[0].ds_len)) {
|
||||
/* XXX bail out? */
|
||||
|
|
@ -445,7 +461,6 @@ edc_intr(arg)
|
|||
break;
|
||||
}
|
||||
|
||||
attn_eoi:
|
||||
/*
|
||||
* Unless the interrupt is for Data Transfer Ready or
|
||||
* Attention Error, finish by assertion EOI. This makes
|
||||
|
|
@ -459,7 +474,6 @@ edc_intr(arg)
|
|||
if (intr_id != ISR_DATA_TRANSFER_RDY
|
||||
&& (cmd == CMD_READ_DATA || cmd == CMD_WRITE_DATA)) {
|
||||
sc->sc_ed[devno]->sc_error = bioerror;
|
||||
sc->sc_ed[devno]->sc_flags |= EDF_IODONE;
|
||||
wakeup_one(&sc->sc_ed[devno]->edc_softc);
|
||||
}
|
||||
|
||||
|
|
@ -480,20 +494,26 @@ edc_do_attn(sc, attn_type, devno, intr_id)
|
|||
/* 1. Disable interrupts in BCR. */
|
||||
bus_space_write_1(sc->sc_iot, sc->sc_ioh, BCR, 0);
|
||||
|
||||
/* 2. Assure NOT BUSY and NO INTERRUPT PENDING, unless acknowledging
|
||||
* a RESET COMPLETED interrupt. */
|
||||
/*
|
||||
* 2. Assure NOT BUSY and NO INTERRUPT PENDING, unless acknowledging
|
||||
* a RESET COMPLETED interrupt.
|
||||
*/
|
||||
if (intr_id != ISR_RESET_COMPLETED) {
|
||||
for(tries=0; tries < 1000; tries++) {
|
||||
for(tries=1; tries < EDC_ATTN_MAXTRIES; tries++) {
|
||||
if ((bus_space_read_1(sc->sc_iot, sc->sc_ioh, BSR)
|
||||
& (BSR_INT_PENDING|BSR_BUSY)) == 0)
|
||||
& BSR_BUSY) == 0) {
|
||||
#ifdef DEBUG
|
||||
if ((bus_space_read_1(sc->sc_iot, sc->sc_ioh,
|
||||
BSR) & BSR_INT_PENDING) && intr_id)
|
||||
panic("foobar");
|
||||
#endif
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
if (tries == 1000) {
|
||||
if (tries == EDC_ATTN_MAXTRIES) {
|
||||
printf("%s: edc_do_attn: timeout waiting for attachment to become available\n",
|
||||
(devno == DASD_DEVNO_CONTROLLER)
|
||||
? sc->sc_dev.dv_xname
|
||||
: sc->sc_ed[devno]->sc_dev.dv_xname);
|
||||
sc->sc_ed[devno]->sc_dev.dv_xname);
|
||||
return (EAGAIN);
|
||||
}
|
||||
}
|
||||
|
|
@ -517,48 +537,62 @@ edc_do_attn(sc, attn_type, devno, intr_id)
|
|||
* We use mono_time, since we don't need actual RTC, just time
|
||||
* interval.
|
||||
*/
|
||||
int
|
||||
edc_cmd_wait(sc, devno, secs)
|
||||
static int
|
||||
edc_cmd_wait(sc, devno, secs, poll)
|
||||
struct edc_mca_softc *sc;
|
||||
int devno, secs;
|
||||
int devno, secs, poll;
|
||||
{
|
||||
struct timeval start, now;
|
||||
int s;
|
||||
int val, delayed;
|
||||
|
||||
s = splclock();
|
||||
start = mono_time;
|
||||
splx(s);
|
||||
delayed = 0;
|
||||
do {
|
||||
val = bus_space_read_1(sc->sc_iot,sc->sc_ioh, BSR);
|
||||
if ((val & BSR_CMD_INPROGRESS) == 0)
|
||||
break;
|
||||
|
||||
while((bus_space_read_1(sc->sc_iot,sc->sc_ioh,BSR)&BSR_CMD_INPROGRESS)){
|
||||
s = splclock();
|
||||
now = mono_time;
|
||||
splx(s);
|
||||
if (now.tv_sec - start.tv_sec > secs)
|
||||
if (poll && (val & BSR_INTR))
|
||||
goto out;
|
||||
|
||||
if (secs == 0)
|
||||
break;
|
||||
|
||||
delay(1);
|
||||
}
|
||||
|
||||
if (now.tv_sec - start.tv_sec >= secs &&
|
||||
/*
|
||||
* This is not as accurate as checking mono_time, but
|
||||
* it works with hardclock interrupts disabled too.
|
||||
*/
|
||||
delayed++;
|
||||
if (delayed == 1000000) {
|
||||
delayed = 0;
|
||||
secs--;
|
||||
}
|
||||
#if 0
|
||||
if (delayed % 1000)
|
||||
printf("looping ...");
|
||||
#endif
|
||||
} while(1);
|
||||
|
||||
if (secs == 0 &&
|
||||
bus_space_read_1(sc->sc_iot, sc->sc_ioh, BSR) & BSR_CMD_INPROGRESS){
|
||||
printf("%s: timed out waiting for previous cmd to finish\n",
|
||||
sc->sc_ed[devno]->sc_dev.dv_xname);
|
||||
return (EAGAIN);
|
||||
}
|
||||
|
||||
out:
|
||||
return (0);
|
||||
}
|
||||
|
||||
int
|
||||
edc_run_cmd(sc, cmd, devno, cmd_args, cmd_len, async)
|
||||
edc_run_cmd(sc, cmd, devno, cmd_args, cmd_len, async, poll)
|
||||
struct edc_mca_softc *sc;
|
||||
int cmd;
|
||||
int devno;
|
||||
u_int16_t cmd_args[];
|
||||
int cmd_len;
|
||||
int async;
|
||||
int cmd_len, async, poll;
|
||||
{
|
||||
int i, error;
|
||||
int i, error, tries;
|
||||
u_int16_t cmd0;
|
||||
|
||||
/*
|
||||
|
|
@ -567,7 +601,7 @@ edc_run_cmd(sc, cmd, devno, cmd_args, cmd_len, async)
|
|||
*/
|
||||
if (sc->sc_cmd_async) {
|
||||
/* Wait maximum 15s */
|
||||
if (edc_cmd_wait(sc, devno, 15))
|
||||
if (edc_cmd_wait(sc, devno, 15, 0))
|
||||
return (EAGAIN); /* Busy */
|
||||
|
||||
sc->sc_cmd_async = 0;
|
||||
|
|
@ -604,9 +638,14 @@ edc_run_cmd(sc, cmd, devno, cmd_args, cmd_len, async)
|
|||
bus_space_write_2(sc->sc_iot, sc->sc_ioh, CIFR,
|
||||
htole16(cmd_args[i]));
|
||||
|
||||
/* wait until CMD IN is cleared */
|
||||
/*
|
||||
* Wait until CMD IN is cleared. The 1ms delay for polling
|
||||
* case is necessary, otherwise e.g. system dump gets stuck
|
||||
* soon. Quirky hw ?
|
||||
*/
|
||||
tries = 0;
|
||||
while(bus_space_read_1(sc->sc_iot, sc->sc_ioh, BSR) & BSR_CIFR_FULL)
|
||||
delay(1);
|
||||
delay(poll ? 1000 : 1);
|
||||
}
|
||||
|
||||
/*
|
||||
|
|
@ -619,9 +658,28 @@ edc_run_cmd(sc, cmd, devno, cmd_args, cmd_len, async)
|
|||
}
|
||||
|
||||
/* Wait for command to complete, but maximum 15 seconds. */
|
||||
if (edc_cmd_wait(sc, devno, 15))
|
||||
if (edc_cmd_wait(sc, devno, 15, poll))
|
||||
return (EAGAIN);
|
||||
|
||||
/* If polling, call edc_intr() explicitly */
|
||||
if (poll) {
|
||||
edc_intr(sc);
|
||||
|
||||
/*
|
||||
* If got attention id DATA TRANSFER READY, wait for
|
||||
* the transfer to finish.
|
||||
*/
|
||||
if (sc->sc_ed[devno]->sc_error == 0
|
||||
&& (cmd == CMD_READ_DATA || cmd == CMD_WRITE_DATA)) {
|
||||
if (edc_cmd_wait(sc, devno, 15, 1))
|
||||
return (EAGAIN);
|
||||
edc_intr(sc);
|
||||
}
|
||||
|
||||
if (edc_cmd_wait(sc, devno, 15, 0))
|
||||
return (EAGAIN);
|
||||
}
|
||||
|
||||
/* Check if the command completed successfully; if not, return error */
|
||||
switch(SB_GET_CMD_STATUS(sc->sc_ed[devno]->sc_status_block)) {
|
||||
case ISR_COMPLETED:
|
||||
|
|
@ -635,9 +693,9 @@ edc_run_cmd(sc, cmd, devno, cmd_args, cmd_len, async)
|
|||
}
|
||||
|
||||
static int
|
||||
edc_setup_dma(sc, bp, phys, cnt)
|
||||
edc_setup_dma(sc, isread, phys, cnt)
|
||||
struct edc_mca_softc *sc;
|
||||
struct buf *bp;
|
||||
int isread;
|
||||
bus_addr_t phys;
|
||||
bus_size_t cnt;
|
||||
{
|
||||
|
|
@ -667,7 +725,7 @@ edc_setup_dma(sc, bp, phys, cnt)
|
|||
0x70 + sc->sc_drq);
|
||||
/* Set the transfer mode */
|
||||
bus_space_write_1(sc->sc_iot, sc->sc_dmaexech, 0,
|
||||
(bp->b_flags & B_READ) ? 0x4C : 0x44);
|
||||
(isread) ? 0x4C : 0x44);
|
||||
bus_space_write_1(sc->sc_iot, sc->sc_dmaextcmdh, 0,
|
||||
0xA0 + sc->sc_drq);
|
||||
/* Enable access to dma channel */
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
/* $NetBSD: edcvar.h,v 1.2 2001/04/22 11:32:49 jdolecek Exp $ */
|
||||
/* $NetBSD: edcvar.h,v 1.3 2001/05/04 12:58:34 jdolecek Exp $ */
|
||||
|
||||
/*
|
||||
* Copyright (c) 2001 The NetBSD Foundation, Inc.
|
||||
|
|
@ -39,6 +39,5 @@ struct ed_attach_args {
|
|||
};
|
||||
|
||||
int edc_run_cmd __P((struct edc_mca_softc *, int,
|
||||
int, u_int16_t [], int, int));
|
||||
int, u_int16_t [], int, int, int));
|
||||
void edc_add_disk __P((struct edc_mca_softc *, struct ed_softc *, int));
|
||||
int edc_cmd_wait __P((struct edc_mca_softc *, int, int));
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
/* $NetBSD: edvar.h,v 1.3 2001/04/22 11:32:49 jdolecek Exp $ */
|
||||
/* $NetBSD: edvar.h,v 1.4 2001/05/04 12:58:34 jdolecek Exp $ */
|
||||
|
||||
/*
|
||||
* Copyright (c) 2001 The NetBSD Foundation, Inc.
|
||||
|
|
@ -45,10 +45,14 @@ struct ed_softc {
|
|||
struct simplelock sc_q_lock;
|
||||
struct callout sc_edstart;
|
||||
|
||||
struct buf *sc_bp; /* buf being transfered */
|
||||
void *sc_data; /* pointer to data for tranfer */
|
||||
long sc_bcount; /* bytes available in buffer */
|
||||
daddr_t sc_rawblkno; /* starting blkno of transfer */
|
||||
int sc_read; /* Read Transfer ? */
|
||||
|
||||
struct edc_mca_softc *edc_softc; /* pointer to our parent */
|
||||
|
||||
volatile int sc_flags;
|
||||
int sc_flags;
|
||||
#define WDF_WLABEL 0x001 /* label is writable */
|
||||
#define WDF_LABELLING 0x002 /* writing label */
|
||||
#define WDF_LOADED 0x004 /* parameters loaded */
|
||||
|
|
@ -57,7 +61,7 @@ struct ed_softc {
|
|||
#define EDF_DMAMAP_LOADED 0x020 /* dmamap_xfer loaded */
|
||||
#define EDF_PROCESS_QUEUE 0x040
|
||||
#define EDF_DK_BUSY 0x080 /* disk_busy() called */
|
||||
#define EDF_IODONE 0x100
|
||||
#define EDF_INIT 0x100 /* disk initialized */
|
||||
int sc_capacity;
|
||||
struct lock sc_lock; /* drive lock */
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue