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authorKenneth R Westerback <krw@cvs.openbsd.org>2011-04-03 16:37:26 +0000
committerKenneth R Westerback <krw@cvs.openbsd.org>2011-04-03 16:37:26 +0000
commit7c7725bd092134301df528c00b4a45f5c652622e (patch)
treecbbbdeeee4d58728d097b7927795b8fb7ceea277 /sys
parent98c89a5a903623639906d73ae1bef4ffada7791a (diff)
Blind but plausible iopoolification. If someone ever compiles a
kernel we'll hear about problems.
Diffstat (limited to 'sys')
-rw-r--r--sys/arch/mac68k/dev/ncr5380.c65
-rw-r--r--sys/arch/mac68k/dev/ncr5380reg.h5
2 files changed, 45 insertions, 25 deletions
diff --git a/sys/arch/mac68k/dev/ncr5380.c b/sys/arch/mac68k/dev/ncr5380.c
index fcc953ae3ae..e1766799d16 100644
--- a/sys/arch/mac68k/dev/ncr5380.c
+++ b/sys/arch/mac68k/dev/ncr5380.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: ncr5380.c,v 1.39 2010/06/28 18:31:01 krw Exp $ */
+/* $OpenBSD: ncr5380.c,v 1.40 2011/04/03 16:37:25 krw Exp $ */
/* $NetBSD: ncr5380.c,v 1.38 1996/12/19 21:48:18 scottr Exp $ */
/*
@@ -77,6 +77,9 @@ static void ncr5380_minphys(struct buf *bp, struct scsi_link *sl);
static void mac68k_ncr5380_scsi_cmd(struct scsi_xfer *xs);
static void ncr5380_show_scsi_cmd(struct scsi_xfer *xs);
+int ncr_sc_req_free(void *, void *);
+void *ncr_sc_req_alloc(void *);
+
struct scsi_adapter ncr5380_switch = {
mac68k_ncr5380_scsi_cmd, /* scsi_cmd() */
ncr5380_minphys, /* scsi_minphys() */
@@ -88,7 +91,6 @@ struct scsi_adapter ncr5380_switch = {
static SC_REQ req_queue[NREQ];
static SC_REQ *free_head = NULL; /* Free request structures */
-
/*
* Inline functions:
*/
@@ -156,7 +158,6 @@ extern __inline__ void nack_message(SC_REQ *reqp, u_char msg)
extern __inline__ void finish_req(SC_REQ *reqp)
{
- int sps;
struct scsi_xfer *xs = reqp->xs;
#ifdef REAL_DMA
@@ -174,15 +175,7 @@ extern __inline__ void finish_req(SC_REQ *reqp)
if (reqp->xs->error != 0)
show_request(reqp, "ERR_RET");
#endif
- /*
- * Return request to free-q
- */
- sps = splbio();
- reqp->next = free_head;
- free_head = reqp;
-
scsi_done(xs);
- splx(sps);
}
/*
@@ -207,6 +200,35 @@ struct cfdriver CFNAME(DRNAME) = {
};
int
+ncr_sc_req_free(void *xsc, void *xsc_req)
+{
+ struct ncr_softc *sc = (ncr_softc *)xsc;
+ struct SC_REQ *sc_req = (SC_REQ *)xsc_req;
+
+ mtx_enter(&sc->sc_sc_req_mtx);
+ sc_req->next = free_head;
+ free_head = sc_req;
+ mtx_leave(&sc->sc_sc_req_mtx);
+}
+
+void *
+ncr_sc_req_alloc(void *xsc)
+{
+ struct ncr_softc *sc = (ncr_softc *)xsc;
+ struct SC_REQ *sc_req = NULL;
+
+ mtx_enter(&sc->sc_sc_req_mtx);
+ if (free_head) {
+ sc_req = free_head;
+ free_head = free_head->next;
+ sc_req->next = NULL;
+ }
+ mtx_leave(&sc->sc_sc_req_mtx);
+
+ return (sc_req);
+}
+
+int
ncr_match(parent, cf, aux)
struct device *parent;
void *cf;
@@ -231,6 +253,7 @@ void *auxp;
sc->sc_link.adapter_target = 7;
sc->sc_link.adapter = &ncr5380_switch;
sc->sc_link.openings = NREQ - 1;
+ sc->sc_link_pool = &sc->sc_iopool;
/*
* bitmasks
@@ -253,6 +276,12 @@ void *auxp;
}
/*
+ * Initialize the iopool.
+ */
+ mtx_init(&sc->sc_sc_req_mtx, IPL_BIO);
+ scsi_iopool_init(&sc->sc_iopool, sc, ncr_sc_req_alloc, ncr_sc_req_free);
+
+ /*
* Initialize the host adapter
*/
scsi_idisable();
@@ -295,19 +324,7 @@ mac68k_ncr5380_scsi_cmd(struct scsi_xfer *xs)
return;
}
- /*
- * Get a request block
- */
- sps = splbio();
- if ((reqp = free_head) == 0) {
- xs->error = XS_NO_CCB;
- scsi_done(xs);
- splx(sps);
- return;
- }
- free_head = reqp->next;
- reqp->next = NULL;
- splx(sps);
+ reqp = xs->io;
/*
* Initialize our private fields
diff --git a/sys/arch/mac68k/dev/ncr5380reg.h b/sys/arch/mac68k/dev/ncr5380reg.h
index b0117f3e293..9314967b1aa 100644
--- a/sys/arch/mac68k/dev/ncr5380reg.h
+++ b/sys/arch/mac68k/dev/ncr5380reg.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: ncr5380reg.h,v 1.6 2006/01/16 21:45:58 miod Exp $ */
+/* $OpenBSD: ncr5380reg.h,v 1.7 2011/04/03 16:37:25 krw Exp $ */
/* $NetBSD: ncr5380reg.h,v 1.9 1996/05/05 06:16:58 briggs Exp $ */
/*
@@ -163,6 +163,9 @@ struct ncr_softc {
struct via2hand sc_ih_irq, sc_ih_drq;
+ struct mutex sc_sc_req_mtx;
+ struct scsi_iopool sc_iopool;
+
/*
* Some (pre-SCSI2) devices don't support select with ATN.
* If the device responds to select with ATN by going into