summaryrefslogtreecommitdiff
path: root/sys/dev
diff options
context:
space:
mode:
authorConstantine Sapuntzakis <csapuntz@cvs.openbsd.org>1999-07-22 02:54:07 +0000
committerConstantine Sapuntzakis <csapuntz@cvs.openbsd.org>1999-07-22 02:54:07 +0000
commitf237139cfc1d3ae4925187db3ef95410975c2718 (patch)
treeca9661fa1e4044797a64f9e4abc87124cd1ebf1d /sys/dev
parent7ef77e86739fadc6a05aad588c19c8ffd9074fea (diff)
Create wdc_enable_intr, wdc_disable_intr, wdc_select_drive.
wdc_select_drive implements the drive selection protocol as documented in the ATA-5 preliminary specs.
Diffstat (limited to 'sys/dev')
-rw-r--r--sys/dev/ic/wdc.c73
-rw-r--r--sys/dev/ic/wdcvar.h12
2 files changed, 71 insertions, 14 deletions
diff --git a/sys/dev/ic/wdc.c b/sys/dev/ic/wdc.c
index 9a0a1fc78d7..3cb28ad1d6c 100644
--- a/sys/dev/ic/wdc.c
+++ b/sys/dev/ic/wdc.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: wdc.c,v 1.2 1999/07/18 22:44:48 csapuntz Exp $ */
+/* $OpenBSD: wdc.c,v 1.3 1999/07/22 02:54:06 csapuntz Exp $ */
/* $NetBSD: wdc.c,v 1.68 1999/06/23 19:00:17 bouyer Exp $ */
@@ -160,6 +160,46 @@ atapi_print(aux, pnp)
return (UNCONF);
}
+void
+wdc_disable_intr(chp)
+ struct channel_softc *chp;
+{
+ bus_space_write_1(chp->ctl_iot, chp->ctl_ioh, wd_aux_ctlr,
+ WDCTL_IDS);
+}
+
+void
+wdc_enable_intr(chp)
+ struct channel_softc *chp;
+{
+ bus_space_write_1(chp->ctl_iot, chp->ctl_ioh, wd_aux_ctlr,
+ WDCTL_4BIT);
+}
+
+int
+wdc_select_drive(chp, drive, howlong)
+ struct channel_softc *chp;
+ int drive;
+ int howlong;
+{
+
+ if (wait_for_unbusy(chp, howlong)) {
+ return -1;
+ }
+
+ bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh,
+ WDSD_IBM | (drive << 4));
+
+ delay(1);
+
+ if (wdcwait(chp, WDCS_DRQ, 0, howlong)) {
+ return -1;
+ }
+
+ return 0;
+}
+
+
/* Test to see controller with at last one attached drive is there.
* Returns a bit for each possible drive found (0x01 for drive 0,
* 0x02 for drive 1).
@@ -587,7 +627,7 @@ wdcreset(chp, verb)
delay(1000);
bus_space_write_1(chp->ctl_iot, chp->ctl_ioh, wd_aux_ctlr,
WDCTL_IDS);
- delay(1000);
+ delay(2000);
(void) bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_error);
bus_space_write_1(chp->ctl_iot, chp->ctl_ioh, wd_aux_ctlr,
WDCTL_4BIT);
@@ -604,6 +644,7 @@ wdcreset(chp, verb)
printf(" drive 1");
printf("\n");
}
+
return (drv_mask1 != drv_mask2) ? 1 : 0;
}
@@ -614,6 +655,10 @@ __wdcwait_reset(chp, drv_mask)
{
int timeout;
u_int8_t st0, st1;
+
+ /* Wait 50ms for drive firmware to settle */
+ delay(50000);
+
/* wait for BSY to deassert */
for (timeout = 0; timeout < WDCNDELAY_RST;timeout++) {
bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh,
@@ -669,6 +714,7 @@ wdcwait(chp, mask, bits, timeout)
{
u_char status;
int time = 0;
+
#ifdef WDCNDELAY_DEBUG
extern int cold;
#endif
@@ -682,7 +728,7 @@ wdcwait(chp, mask, bits, timeout)
for (;;) {
chp->ch_status = status =
bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_status);
- if ((status & WDCS_BSY) == 0 && (status & mask) == bits)
+ if ((status & WDCS_BSY) == 0 && (status & mask) == bits)
break;
if (++time > timeout) {
WDCDEBUG_PRINT(("wdcwait: timeout, status %x "
@@ -1074,14 +1120,23 @@ __wdccommand_start(chp, xfer)
chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive),
DEBUG_FUNCS);
- bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh,
- WDSD_IBM | (drive << 4));
- if (wdcwait(chp, wdc_c->r_st_bmask, wdc_c->r_st_bmask,
- wdc_c->timeout) != 0) {
+ /*
+ * Disable interrupts if we're polling
+ */
+
+ if (xfer->c_flags & C_POLL) {
+ wdc_disable_intr(chp);
+ }
+
+ /*
+ * Make sure the bus isn't busy
+ */
+ if (wdc_select_drive(chp, drive, wdc_c->timeout) != 0) {
wdc_c->flags |= AT_TIMEOU;
__wdccommand_done(chp, xfer);
return;
}
+
wdccommand(chp, drive, wdc_c->r_command, wdc_c->r_cyl, wdc_c->r_head,
wdc_c->r_sector, wdc_c->r_count, wdc_c->r_precomp);
if ((wdc_c->flags & AT_POLL) == 0) {
@@ -1178,6 +1233,9 @@ __wdccommand_done(chp, xfer)
wdc_c->r_precomp = bus_space_read_1(chp->cmd_iot, chp->cmd_ioh,
wd_precomp);
}
+ if (xfer->c_flags & C_POLL) {
+ wdc_enable_intr(chp);
+ }
wdc_free_xfer(chp, xfer);
WDCDEBUG_PRINT(("__wdccommand_done before callback\n"), DEBUG_INTR);
if (needdone) {
@@ -1211,6 +1269,7 @@ wdccommand(chp, drive, command, cylin, head, sector, count, precomp)
/* Select drive, head, and addressing mode. */
bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh,
WDSD_IBM | (drive << 4) | head);
+
/* Load parameters. wd_features(ATA/ATAPI) = wd_precomp(ST506) */
bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_precomp,
precomp);
diff --git a/sys/dev/ic/wdcvar.h b/sys/dev/ic/wdcvar.h
index 1d4fb228154..9319311eb0b 100644
--- a/sys/dev/ic/wdcvar.h
+++ b/sys/dev/ic/wdcvar.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: wdcvar.h,v 1.1 1999/07/18 21:25:16 csapuntz Exp $ */
+/* $OpenBSD: wdcvar.h,v 1.2 1999/07/22 02:54:06 csapuntz Exp $ */
/* $NetBSD: wdcvar.h,v 1.17 1999/04/11 20:50:29 bouyer Exp $ */
/*-
@@ -37,12 +37,6 @@
* POSSIBILITY OF SUCH DAMAGE.
*/
-#if 0
-/* XXX for scsipi_adapter */
-#include <dev/scsipi/scsipi_all.h>
-#include <dev/scsipi/scsipiconf.h>
-#endif
-
struct atapiscsi_softc;
#define WAITTIME (10 * hz) /* time to wait for a completion */
@@ -202,3 +196,7 @@ void wdc_atapibus_attach __P((struct channel_softc *));
void wdc_atapibus_final_attach __P((struct channel_softc *));
int atapi_print __P((void *, const char *));
+
+void wdc_disable_intr __P((struct channel_softc *));
+void wdc_enable_intr __P((struct channel_softc *));
+int wdc_select_drive __P((struct channel_softc *, int, int));