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[src/trunk]: src/sys/dev/ic remove ccb_sc to save memory, no need to store po...
details: https://anonhg.NetBSD.org/src/rev/12a198cf6d0f
branches: trunk
changeset: 935958:12a198cf6d0f
user: jdolecek <jdolecek%NetBSD.org@localhost>
date: Tue Jul 14 11:44:52 2020 +0000
description:
remove ccb_sc to save memory, no need to store pointer to sc in ccb
diffstat:
sys/dev/ic/ciss.c | 58 +++++++++++++++++++++++----------------------------
sys/dev/ic/cissreg.h | 3 +-
2 files changed, 27 insertions(+), 34 deletions(-)
diffs (240 lines):
diff -r d0296f4b094d -r 12a198cf6d0f sys/dev/ic/ciss.c
--- a/sys/dev/ic/ciss.c Tue Jul 14 11:39:02 2020 +0000
+++ b/sys/dev/ic/ciss.c Tue Jul 14 11:44:52 2020 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: ciss.c,v 1.47 2020/07/14 11:39:02 jdolecek Exp $ */
+/* $NetBSD: ciss.c,v 1.48 2020/07/14 11:44:52 jdolecek Exp $ */
/* $OpenBSD: ciss.c,v 1.68 2013/05/30 16:15:02 deraadt Exp $ */
/*
@@ -19,7 +19,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: ciss.c,v 1.47 2020/07/14 11:39:02 jdolecek Exp $");
+__KERNEL_RCSID(0, "$NetBSD: ciss.c,v 1.48 2020/07/14 11:44:52 jdolecek Exp $");
#include "bio.h"
@@ -83,11 +83,11 @@
static void ciss_heartbeat(void *v);
static void ciss_shutdown(void *v);
-static struct ciss_ccb *ciss_get_ccb(struct ciss_softc *sc);
-static void ciss_put_ccb(struct ciss_ccb *ccb);
-static int ciss_cmd(struct ciss_ccb *ccb, int flags, int wait);
-static int ciss_done(struct ciss_ccb *ccb);
-static int ciss_error(struct ciss_ccb *ccb);
+static struct ciss_ccb *ciss_get_ccb(struct ciss_softc *);
+static void ciss_put_ccb(struct ciss_softc *, struct ciss_ccb *);
+static int ciss_cmd(struct ciss_softc *, struct ciss_ccb *, int, int);
+static int ciss_done(struct ciss_softc *, struct ciss_ccb *);
+static int ciss_error(struct ciss_softc *, struct ciss_ccb *);
struct ciss_ld *ciss_pdscan(struct ciss_softc *sc, int ld);
static int ciss_inq(struct ciss_softc *sc, struct ciss_inquiry *inq);
int ciss_ldid(struct ciss_softc *, int, struct ciss_ldid *);
@@ -118,10 +118,8 @@
}
static void
-ciss_put_ccb(struct ciss_ccb *ccb)
+ciss_put_ccb(struct ciss_softc *sc, struct ciss_ccb *ccb)
{
- struct ciss_softc *sc = ccb->ccb_sc;
-
ccb->ccb_state = CISS_CCB_FREE;
mutex_enter(&sc->sc_mutex);
STAILQ_INSERT_HEAD(&sc->sc_free_ccb, ccb, ccb_link);
@@ -354,7 +352,6 @@
cmd = &ccb->ccb_cmd;
pa = sc->cmdseg[0].ds_addr + i * sc->ccblen;
- ccb->ccb_sc = sc;
ccb->ccb_cmdpa = pa + offsetof(struct ciss_ccb, ccb_cmd);
ccb->ccb_state = CISS_CCB_FREE;
@@ -631,7 +628,7 @@
STAILQ_REMOVE_HEAD(&q, ccb_link);
KASSERT(ccb1->ccb_state == CISS_CCB_ONQ);
- ciss_done(ccb1);
+ ciss_done(sc, ccb1);
if (ccb1 == ccb) {
KASSERT(STAILQ_EMPTY(&q));
return 0;
@@ -662,7 +659,7 @@
}
mutex_exit(&sc->sc_mutex);
if (ccb->ccb_state == CISS_CCB_ONQ) {
- ciss_done(ccb);
+ ciss_done(sc, ccb);
return 0;
}
tohz = etick - getticks();
@@ -679,9 +676,8 @@
* instead of busy loop waiting
*/
static int
-ciss_cmd(struct ciss_ccb *ccb, int flags, int wait)
+ciss_cmd(struct ciss_softc *sc, struct ciss_ccb *ccb, int flags, int wait)
{
- struct ciss_softc *sc = ccb->ccb_sc;
struct ciss_cmd *cmd = &ccb->ccb_cmd;
bus_dmamap_t dmap = ccb->ccb_dmamap;
u_int64_t addr;
@@ -704,7 +700,7 @@
printf("more than %d dma segs\n", sc->maxsg);
else
printf("error %d loading dma map\n", error);
- ciss_put_ccb(ccb);
+ ciss_put_ccb(sc, ccb);
return (error);
}
cmd->sgin = dmap->dm_nsegs;
@@ -807,7 +803,7 @@
if (ccb->ccb_state != CISS_CCB_FREE) {
KASSERT(error);
ccb->ccb_err.cmd_stat = CISS_ERR_TMO;
- error = ciss_done(ccb);
+ error = ciss_done(sc, ccb);
}
CISS_DPRINTF(CISS_D_CMD, ("done %d:%d",
@@ -824,9 +820,8 @@
}
static int
-ciss_done(struct ciss_ccb *ccb)
+ciss_done(struct ciss_softc *sc, struct ciss_ccb *ccb)
{
- struct ciss_softc *sc = ccb->ccb_sc;
struct scsipi_xfer *xs = ccb->ccb_xs;
struct ciss_cmd *cmd;
int error = 0;
@@ -842,7 +837,7 @@
ccb->ccb_state = CISS_CCB_READY;
if (ccb->ccb_cmd.id & CISS_CMD_ERR)
- error = ciss_error(ccb);
+ error = ciss_error(sc, ccb);
cmd = &ccb->ccb_cmd;
if (ccb->ccb_data) {
@@ -854,7 +849,7 @@
ccb->ccb_data = NULL;
}
- ciss_put_ccb(ccb);
+ ciss_put_ccb(sc, ccb);
if (xs) {
xs->resid = 0;
@@ -874,9 +869,8 @@
}
static int
-ciss_error(struct ciss_ccb *ccb)
+ciss_error(struct ciss_softc *sc, struct ciss_ccb *ccb)
{
- struct ciss_softc *sc = ccb->ccb_sc;
struct ciss_error *err = &ccb->ccb_err;
struct scsipi_xfer *xs = ccb->ccb_xs;
int rv;
@@ -976,7 +970,7 @@
cmd->cdb[7] = sizeof(*inq) >> 8; /* biiiig endian */
cmd->cdb[8] = sizeof(*inq) & 0xff;
- return ciss_cmd(ccb, BUS_DMA_NOWAIT, XS_CTL_POLL|XS_CTL_NOSLEEP);
+ return ciss_cmd(sc, ccb, BUS_DMA_NOWAIT, XS_CTL_POLL|XS_CTL_NOSLEEP);
}
static int
@@ -1007,7 +1001,7 @@
cmd->cdb[8] = total >> 8; /* biiiig endian */
cmd->cdb[9] = total & 0xff;
- rv = ciss_cmd(ccb, BUS_DMA_NOWAIT, XS_CTL_POLL|XS_CTL_NOSLEEP);
+ rv = ciss_cmd(sc, ccb, BUS_DMA_NOWAIT, XS_CTL_POLL|XS_CTL_NOSLEEP);
if (rv) {
mutex_exit(&sc->sc_mutex_scratch);
@@ -1050,7 +1044,7 @@
cmd->cdb[7] = sizeof(*flush) >> 8; /* biiiig endian */
cmd->cdb[8] = sizeof(*flush) & 0xff;
- rv = ciss_cmd(ccb, BUS_DMA_NOWAIT, XS_CTL_POLL|XS_CTL_NOSLEEP);
+ rv = ciss_cmd(sc, ccb, BUS_DMA_NOWAIT, XS_CTL_POLL|XS_CTL_NOSLEEP);
mutex_exit(&sc->sc_mutex_scratch);
return rv;
@@ -1081,7 +1075,7 @@
cmd->cdb[7] = sizeof(*id) >> 8; /* biiiig endian */
cmd->cdb[8] = sizeof(*id) & 0xff;
- return ciss_cmd(ccb, BUS_DMA_NOWAIT, XS_CTL_POLL | sc->sc_waitflag);
+ return ciss_cmd(sc, ccb, BUS_DMA_NOWAIT, XS_CTL_POLL | sc->sc_waitflag);
}
int
@@ -1109,7 +1103,7 @@
cmd->cdb[7] = sizeof(*stat) >> 8; /* biiiig endian */
cmd->cdb[8] = sizeof(*stat) & 0xff;
- return ciss_cmd(ccb, BUS_DMA_NOWAIT, XS_CTL_POLL | sc->sc_waitflag);
+ return ciss_cmd(sc, ccb, BUS_DMA_NOWAIT, XS_CTL_POLL | sc->sc_waitflag);
}
int
@@ -1137,7 +1131,7 @@
cmd->cdb[7] = sizeof(*id) >> 8; /* biiiig endian */
cmd->cdb[8] = sizeof(*id) & 0xff;
- return ciss_cmd(ccb, BUS_DMA_NOWAIT, wait);
+ return ciss_cmd(sc, ccb, BUS_DMA_NOWAIT, wait);
}
@@ -1230,7 +1224,7 @@
cmd->cdb[0], cmd->cdb[1], cmd->cdb[2],
cmd->cdb[3], cmd->cdb[4], cmd->cdb[5]));
- if (ciss_cmd(ccb, BUS_DMA_WAITOK,
+ if (ciss_cmd(sc, ccb, BUS_DMA_WAITOK,
xs->xs_control & (XS_CTL_POLL|XS_CTL_NOSLEEP))) {
printf("ciss driver stuffup in %s:%d: %s()\n",
__FILE__, __LINE__, __func__);
@@ -1274,7 +1268,7 @@
cv_broadcast(&sc->sc_condvar);
mutex_exit(&sc->sc_mutex);
} else
- ciss_done(ccb);
+ ciss_done(sc, ccb);
}
}
@@ -1632,7 +1626,7 @@
cmd->cdb[7] = sizeof(*blink) >> 8; /* biiiig endian */
cmd->cdb[8] = sizeof(*blink) & 0xff;
- return ciss_cmd(ccb, BUS_DMA_NOWAIT, XS_CTL_POLL);
+ return ciss_cmd(sc, ccb, BUS_DMA_NOWAIT, XS_CTL_POLL);
}
int
diff -r d0296f4b094d -r 12a198cf6d0f sys/dev/ic/cissreg.h
--- a/sys/dev/ic/cissreg.h Tue Jul 14 11:39:02 2020 +0000
+++ b/sys/dev/ic/cissreg.h Tue Jul 14 11:44:52 2020 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: cissreg.h,v 1.7 2020/07/14 11:39:02 jdolecek Exp $ */
+/* $NetBSD: cissreg.h,v 1.8 2020/07/14 11:44:52 jdolecek Exp $ */
/* $OpenBSD: cissreg.h,v 1.11 2010/06/03 01:02:13 dlg Exp $ */
/*
@@ -517,7 +517,6 @@
struct ciss_ccb {
STAILQ_ENTRY(ciss_ccb) ccb_link;
- struct ciss_softc *ccb_sc;
paddr_t ccb_cmdpa;
enum {
CISS_CCB_FREE = 0x01,
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