Make it use mutex(9) and condvar(9), bye bye spl(9) and tsleep(9).
Fully stable with all debugging options turned on, unless someday any problem appears :-)
This commit is contained in:
xtraeme
parent
67637efccc
commit
dc5ade8ebb
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@ -1,4 +1,4 @@
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/* $NetBSD: arcmsr.c,v 1.2 2007/12/05 16:02:25 xtraeme Exp $ */
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/* $NetBSD: arcmsr.c,v 1.3 2007/12/05 18:07:34 xtraeme Exp $ */
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/* $OpenBSD: arc.c,v 1.68 2007/10/27 03:28:27 dlg Exp $ */
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/*
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@ -20,7 +20,7 @@
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#include "bio.h"
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: arcmsr.c,v 1.2 2007/12/05 16:02:25 xtraeme Exp $");
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__KERNEL_RCSID(0, "$NetBSD: arcmsr.c,v 1.3 2007/12/05 18:07:34 xtraeme Exp $");
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#include <sys/param.h>
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#include <sys/buf.h>
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@ -28,7 +28,8 @@ __KERNEL_RCSID(0, "$NetBSD: arcmsr.c,v 1.2 2007/12/05 16:02:25 xtraeme Exp $");
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#include <sys/malloc.h>
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#include <sys/device.h>
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#include <sys/kthread.h>
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#include <sys/rwlock.h>
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#include <sys/mutex.h>
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#include <sys/condvar.h>
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#if NBIO > 0
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#include <sys/ioctl.h>
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@ -143,7 +144,8 @@ arc_attach(device_t parent, device_t self, void *aux)
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struct scsipi_channel *chan = &sc->sc_chan;
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sc->sc_talking = 0;
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rw_init(&sc->sc_rwlock);
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mutex_init(&sc->sc_mutex, MUTEX_DEFAULT, IPL_BIO);
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cv_init(&sc->sc_condvar, "arcdb");
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if (arc_map_pci_resources(sc, pa) != 0) {
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/* error message printed by arc_map_pci_resources */
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@ -214,6 +216,7 @@ arc_detach(device_t self, int flags)
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shutdownhook_disestablish(sc->sc_shutdownhook);
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mutex_enter(&sc->sc_mutex);
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if (arc_msg0(sc, ARC_REG_INB_MSG0_STOP_BGRB) != 0)
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aprint_error("%s: timeout waiting to stop bg rebuild\n",
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device_xname(&sc->sc_dev));
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@ -221,6 +224,7 @@ arc_detach(device_t self, int flags)
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if (arc_msg0(sc, ARC_REG_INB_MSG0_FLUSH_CACHE) != 0)
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aprint_error("%s: timeout waiting to flush cache\n",
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device_xname(&sc->sc_dev));
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mutex_exit(&sc->sc_mutex);
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return 0;
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}
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@ -230,6 +234,7 @@ arc_shutdown(void *xsc)
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{
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struct arc_softc *sc = xsc;
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mutex_enter(&sc->sc_mutex);
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if (arc_msg0(sc, ARC_REG_INB_MSG0_STOP_BGRB) != 0)
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aprint_error("%s: timeout waiting to stop bg rebuild\n",
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device_xname(&sc->sc_dev));
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@ -237,6 +242,7 @@ arc_shutdown(void *xsc)
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if (arc_msg0(sc, ARC_REG_INB_MSG0_FLUSH_CACHE) != 0)
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aprint_error("%s: timeout waiting to flush cache\n",
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device_xname(&sc->sc_dev));
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mutex_exit(&sc->sc_mutex);
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}
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static void
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@ -256,9 +262,12 @@ arc_intr(void *arg)
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struct arc_io_cmd *cmd;
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uint32_t reg, intrstat;
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mutex_enter(&sc->sc_mutex);
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intrstat = arc_read(sc, ARC_REG_INTRSTAT);
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if (intrstat == 0x0)
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if (intrstat == 0x0) {
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mutex_exit(&sc->sc_mutex);
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return 0;
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}
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intrstat &= ARC_REG_INTRSTAT_POSTQUEUE | ARC_REG_INTRSTAT_DOORBELL;
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arc_write(sc, ARC_REG_INTRSTAT, intrstat);
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@ -268,7 +277,7 @@ arc_intr(void *arg)
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/* if an ioctl is talking, wake it up */
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arc_write(sc, ARC_REG_INTRMASK,
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~ARC_REG_INTRMASK_POSTQUEUE);
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wakeup(sc);
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cv_broadcast(&sc->sc_condvar);
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} else {
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/* otherwise drop it */
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reg = arc_read(sc, ARC_REG_OUTB_DOORBELL);
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@ -278,6 +287,7 @@ arc_intr(void *arg)
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ARC_REG_INB_DOORBELL_READ_OK);
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}
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}
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mutex_exit(&sc->sc_mutex);
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while ((reg = arc_pop(sc)) != 0xffffffff) {
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cmd = (struct arc_io_cmd *)(kva +
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@ -306,7 +316,6 @@ arc_scsi_cmd(struct scsipi_channel *chan, scsipi_adapter_req_t req, void *arg)
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struct arc_msg_scsicmd *cmd;
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uint32_t reg;
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uint8_t target;
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int s;
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switch (req) {
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case ADAPTER_REQ_GROW_RESOURCES:
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@ -330,28 +339,24 @@ arc_scsi_cmd(struct scsipi_channel *chan, scsipi_adapter_req_t req, void *arg)
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xs->sense.scsi_sense.asc = 0x20;
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xs->error = XS_SENSE;
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xs->status = SCSI_CHECK;
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s = splbio();
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scsipi_done(xs);
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goto out;
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return;
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}
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s = splbio();
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ccb = arc_get_ccb(sc);
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if (ccb == NULL) {
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xs->error = XS_RESOURCE_SHORTAGE;
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scsipi_done(xs);
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goto out;
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return;
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}
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splx(s);
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ccb->ccb_xs = xs;
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if (arc_load_xs(ccb) != 0) {
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xs->error = XS_DRIVER_STUFFUP;
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s = splbio();
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arc_put_ccb(sc, ccb);
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scsipi_done(xs);
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goto out;
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return;
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}
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cmd = &ccb->ccb_cmd->cmd;
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@ -381,7 +386,6 @@ arc_scsi_cmd(struct scsipi_channel *chan, scsipi_adapter_req_t req, void *arg)
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ccb->ccb_offset, ARC_MAX_IOCMDLEN,
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BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
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s = splbio();
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arc_push(sc, reg);
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if (xs->xs_control & XS_CTL_POLL) {
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if (arc_complete(sc, ccb, xs->timeout) != 0) {
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@ -389,8 +393,6 @@ arc_scsi_cmd(struct scsipi_channel *chan, scsipi_adapter_req_t req, void *arg)
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scsipi_done(xs);
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}
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}
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out:
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splx(s);
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}
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int
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@ -573,19 +575,30 @@ arc_query_firmware(struct arc_softc *sc)
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struct arc_msg_firmware_info fwinfo;
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char string[81]; /* sizeof(vendor)*2+1 */
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mutex_enter(&sc->sc_mutex);
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if (arc_wait_eq(sc, ARC_REG_OUTB_ADDR1, ARC_REG_OUTB_ADDR1_FIRMWARE_OK,
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ARC_REG_OUTB_ADDR1_FIRMWARE_OK) != 0) {
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aprint_debug("%s: timeout waiting for firmware ok\n",
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device_xname(&sc->sc_dev));
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mutex_enter(&sc->sc_mutex);
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return 1;
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}
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if (arc_msg0(sc, ARC_REG_INB_MSG0_GET_CONFIG) != 0) {
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aprint_debug("%s: timeout waiting for get config\n",
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device_xname(&sc->sc_dev));
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mutex_exit(&sc->sc_mutex);
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return 1;
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}
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if (arc_msg0(sc, ARC_REG_INB_MSG0_START_BGRB) != 0) {
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aprint_debug("%s: timeout waiting to start bg rebuild\n",
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device_xname(&sc->sc_dev));
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mutex_exit(&sc->sc_mutex);
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return 1;
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}
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mutex_exit(&sc->sc_mutex);
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arc_read_region(sc, ARC_REG_MSGBUF, &fwinfo, sizeof(fwinfo));
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DNPRINTF(ARC_D_INIT, "%s: signature: 0x%08x\n",
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@ -632,12 +645,6 @@ arc_query_firmware(struct arc_softc *sc)
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sc->sc_req_count = htole32(fwinfo.queue_len);
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if (arc_msg0(sc, ARC_REG_INB_MSG0_START_BGRB) != 0) {
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aprint_debug("%s: timeout waiting to start bg rebuild\n",
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device_xname(&sc->sc_dev));
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return 1;
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}
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aprint_normal("%s: %d ports, %dMB SDRAM, firmware <%s>\n",
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device_xname(&sc->sc_dev), htole32(fwinfo.sata_ports),
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htole32(fwinfo.sdram_size), string);
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@ -1174,39 +1181,32 @@ out:
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void
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arc_lock(struct arc_softc *sc)
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{
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int s;
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rw_enter(&sc->sc_rwlock, RW_WRITER);
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s = splbio();
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mutex_enter(&sc->sc_mutex);
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arc_write(sc, ARC_REG_INTRMASK, ~ARC_REG_INTRMASK_POSTQUEUE);
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sc->sc_talking = 1;
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splx(s);
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}
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void
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arc_unlock(struct arc_softc *sc)
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{
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int s;
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KASSERT(mutex_owned(&sc->sc_mutex));
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s = splbio();
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sc->sc_talking = 0;
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arc_write(sc, ARC_REG_INTRMASK,
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~(ARC_REG_INTRMASK_POSTQUEUE|ARC_REG_INTRMASK_DOORBELL));
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splx(s);
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rw_exit(&sc->sc_rwlock);
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mutex_exit(&sc->sc_mutex);
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}
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void
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arc_wait(struct arc_softc *sc)
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{
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int s;
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KASSERT(mutex_owned(&sc->sc_mutex));
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s = splbio();
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arc_write(sc, ARC_REG_INTRMASK,
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~(ARC_REG_INTRMASK_POSTQUEUE|ARC_REG_INTRMASK_DOORBELL));
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if (tsleep(sc, PWAIT|PCATCH, "arcdb", hz) == EWOULDBLOCK)
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if (cv_timedwait_sig(&sc->sc_condvar, &sc->sc_mutex, hz) ==
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EWOULDBLOCK)
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arc_write(sc, ARC_REG_INTRMASK, ~ARC_REG_INTRMASK_POSTQUEUE);
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splx(s);
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}
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#if NBIO > 0
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@ -1315,6 +1315,8 @@ arc_read(struct arc_softc *sc, bus_size_t r)
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{
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uint32_t v;
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KASSERT(mutex_owned(&sc->sc_mutex));
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bus_space_barrier(sc->sc_iot, sc->sc_ioh, r, 4,
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BUS_SPACE_BARRIER_READ);
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v = bus_space_read_4(sc->sc_iot, sc->sc_ioh, r);
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@ -1337,6 +1339,8 @@ arc_read_region(struct arc_softc *sc, bus_size_t r, void *buf, size_t len)
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void
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arc_write(struct arc_softc *sc, bus_size_t r, uint32_t v)
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{
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KASSERT(mutex_owned(&sc->sc_mutex));
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DNPRINTF(ARC_D_RW, "%s: arc_write 0x%lx 0x%08x\n",
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device_xname(&sc->sc_dev), r, v);
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@ -1360,6 +1364,8 @@ arc_wait_eq(struct arc_softc *sc, bus_size_t r, uint32_t mask,
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{
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int i;
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KASSERT(mutex_owned(&sc->sc_mutex));
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DNPRINTF(ARC_D_RW, "%s: arc_wait_eq 0x%lx 0x%08x 0x%08x\n",
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device_xname(&sc->sc_dev), r, mask, target);
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@ -1393,6 +1399,8 @@ arc_wait_ne(struct arc_softc *sc, bus_size_t r, uint32_t mask,
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int
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arc_msg0(struct arc_softc *sc, uint32_t m)
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{
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KASSERT(mutex_owned(&sc->sc_mutex));
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/* post message */
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arc_write(sc, ARC_REG_INB_MSG0, m);
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/* wait for the fw to do it */
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@ -1520,17 +1528,21 @@ arc_get_ccb(struct arc_softc *sc)
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{
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struct arc_ccb *ccb;
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mutex_enter(&sc->sc_mutex);
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ccb = TAILQ_FIRST(&sc->sc_ccb_free);
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if (ccb != NULL)
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TAILQ_REMOVE(&sc->sc_ccb_free, ccb, ccb_link);
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mutex_exit(&sc->sc_mutex);
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return ccb;
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}
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void
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arc_put_ccb(struct arc_softc *sc, struct arc_ccb *ccb)
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{
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mutex_enter(&sc->sc_mutex);
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ccb->ccb_xs = NULL;
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memset(ccb->ccb_cmd, 0, ARC_MAX_IOCMDLEN);
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TAILQ_INSERT_TAIL(&sc->sc_ccb_free, ccb, ccb_link);
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mutex_exit(&sc->sc_mutex);
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}
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@ -1,4 +1,4 @@
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/* $NetBSD: arcmsrvar.h,v 1.2 2007/12/05 16:02:26 xtraeme Exp $ */
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/* $NetBSD: arcmsrvar.h,v 1.3 2007/12/05 18:07:34 xtraeme Exp $ */
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/* Derived from $OpenBSD: arc.c,v 1.68 2007/10/27 03:28:27 dlg Exp $ */
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/*
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@ -330,7 +330,8 @@ struct arc_softc {
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struct lwp *sc_lwp;
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volatile int sc_talking;
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krwlock_t sc_rwlock;
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kmutex_t sc_mutex;
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kcondvar_t sc_condvar;
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struct sysmon_envsys *sc_sme;
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envsys_data_t *sc_sensors;
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