From 05d67ebf5c1ed3821fac7d4eaf1d7de89bbcefe8 Mon Sep 17 00:00:00 2001
From: David Gwynne <dlg@cvs.openbsd.org>
Date: Tue, 2 Aug 2005 03:35:15 +0000
Subject: read the rpm of the fans

---
 sys/scsi/ses.c | 39 ++++++++++++++++++++++++++++++++++-----
 sys/scsi/ses.h | 21 ++++++++++++++++++++-
 2 files changed, 54 insertions(+), 6 deletions(-)

diff --git a/sys/scsi/ses.c b/sys/scsi/ses.c
index f1cb620ef7e..0d33388622e 100644
--- a/sys/scsi/ses.c
+++ b/sys/scsi/ses.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: ses.c,v 1.9 2005/08/01 23:14:31 dlg Exp $ */
+/*	$OpenBSD: ses.c,v 1.10 2005/08/02 03:35:14 dlg Exp $ */
 
 /*
  * Copyright (c) 2005 David Gwynne <dlg@openbsd.org>
@@ -90,7 +90,8 @@ int	ses_read_status(struct ses_softc *, int refresh);
 int	ses_make_sensors(struct ses_softc *, struct ses_type_desc *, int);
 int	ses_refresh_sensors(struct ses_softc *);
 
-int64_t	temp2uK(struct ses_status *);
+int64_t	ses_cool2rpm(struct ses_status *);
+int64_t	ses_temp2uK(struct ses_status *);
 
 #ifdef SES_DEBUG
 void	ses_dump_enc_desc(struct ses_enc_desc *);
@@ -343,10 +344,23 @@ ses_make_sensors(struct ses_softc *sc, struct ses_type_desc *types, int ntypes)
 				continue;
 
 			switch (types[i].type) {
+			case SES_T_COOLING:
+				/*
+				 * if the fan is on but not showing an rpm
+				 * then skip it
+				 */
+				if ((SES_S_COOL_CODE(status) !=
+				    SES_S_COOL_C_STOPPED) &&
+				    SES_S_COOL_SPEED(status) == 0)
+					continue;
+
+				stype = SENSOR_FANRPM;
+				fmt = "fan%d";
+				break;
+
 			case SES_T_TEMP:
 				stype = SENSOR_TEMP;
 				fmt = "temp%d";
-
 				break;
 
 			default:
@@ -404,8 +418,12 @@ ses_refresh_sensors(struct ses_softc *sc)
 		    sensor->se_stat->f3);
 
 		switch (sensor->se_type) {
+		case SES_T_COOLING:
+			sensor->se_sensor.value = ses_cool2rpm(sensor->se_stat);
+			break;
+
 		case SES_T_TEMP:
-			sensor->se_sensor.value = temp2uK(sensor->se_stat);
+			sensor->se_sensor.value = ses_temp2uK(sensor->se_stat);
 			break;
 
 		default:
@@ -418,7 +436,18 @@ ses_refresh_sensors(struct ses_softc *sc)
 }
 
 int64_t
-temp2uK(struct ses_status *status)
+ses_cool2rpm(struct ses_status *status)
+{
+	int64_t				rpm;
+
+	rpm = (int64_t)SES_S_COOL_SPEED(status);
+	rpm *= SES_S_COOL_FACTOR;
+
+	return (rpm);
+}
+
+int64_t
+ses_temp2uK(struct ses_status *status)
 {
 	int64_t				temp;
 
diff --git a/sys/scsi/ses.h b/sys/scsi/ses.h
index 12e6e62ed38..cd54668f0ee 100644
--- a/sys/scsi/ses.h
+++ b/sys/scsi/ses.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: ses.h,v 1.3 2005/08/01 23:14:31 dlg Exp $ */
+/* $OpenBSD: ses.h,v 1.4 2005/08/02 03:35:14 dlg Exp $ */
 /*
  * Copyright (c) 2005 Marco Peereboom
  * All rights reserved.
@@ -149,6 +149,25 @@ struct ses_status {
 #define SES_S_DEV_DONOTREM(d)	((d)->f2 & (1<<6)) /* no not remove */
 /* XXX FINISH THIS */
 
+/* cooling element */
+#define SES_S_COOL_IDENT(d)	((d)->f1 & (1<<6)) /* identify */
+#define SES_S_COOL_SPEED_MASK	0x03
+#define SES_S_COOL_SPEED(d)	((d)->f2 + \
+    ((u_int16_t)((d)->f2 & SES_S_COOL_SPEED_MASK) << 8)) 
+#define SES_S_COOL_FACTOR	10
+#define SES_S_COOL_CODE(d)	((d)->f3 & 0x7) /* actual speed code */
+#define SES_S_COOL_C_STOPPED	0x0 /* stopped */
+#define SES_S_COOL_C_LOW1	0x1 /* lowest speed */
+#define SES_S_COOL_C_LOW2	0x2 /* second lowest speed */
+#define SES_S_COOL_C_LOW3	0x3 /* third lowest speed */
+#define SES_S_COOL_C_INTER	0x4 /* intermediate speed */
+#define SES_S_COOL_C_HI3	0x5 /* third highest speed */
+#define SES_S_COOL_C_HI2	0x6 /* second highest speed */
+#define SES_S_COOL_C_HI1	0x7 /* highest speed */
+#define SES_S_COOL_OFF		((d)->f3 & (1<<4)) /* not cooling */
+#define SES_S_COOL_RQSTON	((d)->f3 & (1<<5)) /* manually on */
+#define SES_S_COOL_FAIL		((d)->f3 & (1<<6)) /* fail indic is on */
+
 /* temperature sensor */
 #define SES_S_TEMP_IDENT(d)	((d)->f1 & (1<<7)) /* identify */
 #define SES_S_TEMP(d)		((d)->f2)
-- 
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