lm(4) driver from NetBSD adapted for sysctl interface.

The lm driver provides support for the National Semiconductor LM series
hardware monitors and register compatible chips. It supports LM78,
LM78-J, LM79, Winbond W83697HF, W83627HF, W83781D and W83782D chips.

Tested and ok'ed by millert@ and henning@.

2 files changed, 153 insertions, 1 deletions

diff --git a/sys/dev/isa/files.isa b/sys/dev/isa/files.isa
index 88460e81030..f72f71bd10d 100644
--- a/sys/dev/isa/files.isa
+++ b/sys/dev/isa/files.isa
@@ -1,4 +1,4 @@
-#	$OpenBSD: files.isa,v 1.82 2002/11/30 15:44:38 mickey Exp $
+#	$OpenBSD: files.isa,v 1.83 2003/04/25 21:24:15 grange Exp $
 #	$NetBSD: files.isa,v 1.21 1996/05/16 03:45:55 mycroft Exp $
 #
 # Config file and device description for machine-independent ISA code.
@@ -384,6 +384,10 @@ file	dev/isa/midi_pcppi.c    midi_pcppi
 attach	lpt at isa with lpt_isa
 file	dev/isa/lpt_isa.c		lpt_isa needs-flag
 
+# National Semiconductor LM7[89] and compatible hardware monitors
+attach	lm at isa with lm_isa
+file	dev/isa/lm_isa.c		lm_isa
+
 #
 # PCMCIA PCIC (i82365SL and compatibles):
 #
diff --git a/sys/dev/isa/lm_isa.c b/sys/dev/isa/lm_isa.c
new file mode 100644
index 00000000000..e9637a78a17
--- /dev/null
+++ b/sys/dev/isa/lm_isa.c
@@ -0,0 +1,148 @@
+/*	$OpenBSD: lm_isa.c,v 1.1 2003/04/25 21:24:15 grange Exp $	*/
+/*	$NetBSD: lm_isa.c,v 1.9 2002/11/15 14:55:44 ad Exp $ */
+
+/*-
+ * Copyright (c) 2000 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Bill Squier.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *        This product includes software developed by the NetBSD
+ *        Foundation, Inc. and its contributors.
+ * 4. Neither the name of The NetBSD Foundation nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/device.h>
+#include <sys/sensors.h>
+#include <machine/bus.h>
+
+#include <dev/isa/isareg.h>
+#include <dev/isa/isavar.h>
+
+#include <dev/ic/nslm7xvar.h>
+
+#if defined(LMDEBUG)
+#define DPRINTF(x)		do { printf x; } while (0)
+#else
+#define DPRINTF(x)
+#endif
+
+int  lm_isa_match(struct device *, void *, void *);
+void lm_isa_attach(struct device *, struct device *, void *);
+u_int8_t lm_isa_readreg(struct lm_softc *, int);
+void lm_isa_writereg(struct lm_softc *, int, int);
+
+struct cfattach lm_isa_ca = {
+	sizeof(struct lm_softc),
+	lm_isa_match,
+	lm_isa_attach
+};
+
+int
+lm_isa_match(struct device *parent, void *match, void *aux)
+{
+	bus_space_tag_t iot;
+	bus_space_handle_t ioh;
+	struct isa_attach_args *ia = aux;
+	int iobase;
+	int rv;
+
+	/* Must supply an address */
+	if (ia->ipa_nio < 1)
+		return (0);
+
+#ifdef __NetBSD__
+	if (ISA_DIRECT_CONFIG(ia))
+		return (0);
+
+	if (ia->ipa_io[0].ir_addr == ISACF_PORT_DEFAULT)
+		return (0);
+#endif
+
+	iot = ia->ia_iot;
+	iobase = ia->ipa_io[0].base;
+
+	if (bus_space_map(iot, iobase, 8, 0, &ioh))
+		return (0);
+
+
+	/* Bus independent probe */
+	rv = lm_probe(iot, ioh);
+
+	bus_space_unmap(iot, ioh, 8);
+
+	if (rv) {
+		ia->ipa_nio = 1;
+		ia->ipa_io[0].length = 8;
+
+		ia->ipa_nmem = 0;
+		ia->ipa_nirq = 0;
+		ia->ipa_ndrq = 0;
+	}
+
+	return (rv);
+}
+
+void
+lm_isa_attach(struct device *parent, struct device *self, void *aux)
+{
+	struct lm_softc *lmsc = (void *)self;
+	int iobase;
+	bus_space_tag_t iot;
+	struct isa_attach_args *ia = aux;
+
+        iobase = ia->ipa_io[0].base;
+	iot = lmsc->lm_iot = ia->ia_iot;
+
+	if (bus_space_map(iot, iobase, 8, 0, &lmsc->lm_ioh)) {
+		printf(": can't map i/o space\n");
+		return;
+	}
+
+	/* Bus-independant attachment */
+	lmsc->lm_writereg = lm_isa_writereg;
+	lmsc->lm_readreg = lm_isa_readreg;
+
+	lm_attach(lmsc);
+}
+
+u_int8_t
+lm_isa_readreg(struct lm_softc *sc, int reg)
+{
+	bus_space_write_1(sc->lm_iot, sc->lm_ioh, LMC_ADDR, reg);
+	return (bus_space_read_1(sc->lm_iot, sc->lm_ioh, LMC_DATA));
+}
+
+void
+lm_isa_writereg(struct lm_softc *sc, int reg, int val)
+{
+	bus_space_write_1(sc->lm_iot, sc->lm_ioh, LMC_ADDR, reg);
+	bus_space_write_1(sc->lm_iot, sc->lm_ioh, LMC_DATA, val);
+}