Add driver for the hardware monitoring portion of the SMSC LPC47B397
This commit is contained in:
blymn
parent
ab5f84630b
commit
eeece1c927
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@ -1,4 +1,4 @@
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# $NetBSD: files.isa,v 1.149 2007/05/08 16:48:38 xtraeme Exp $
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# $NetBSD: files.isa,v 1.150 2007/06/01 14:11:59 blymn Exp $
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#
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# Config file and device description for machine-independent ISA code.
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# Included by ports that need it. Requires that the SCSI files be
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@ -451,6 +451,11 @@ file dev/isa/attimer_isa.c attimer_isa
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# Environmental monitors
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#
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# SMSC LPC47B397 temp/fanspeed monitor
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device smsc: sysmon_envsys
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attach smsc at isa with smsc
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file dev/isa/smsc.c smsc needs-flag
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# LM78 temp/fanspeed monitor
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attach lm at isa with lm_isa
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file dev/isa/lm_isa.c lm_isa
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@ -0,0 +1,441 @@
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/* $NetBSD: smsc.c,v 1.1 2007/06/01 14:11:59 blymn Exp $ */
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/*-
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* Copyright (c) 2007 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Brett Lymn.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* This is a driver for the Standard Microsystems Corp (SMSC)
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* LPC47B397 "super i/o" chip. This driver only handles the environment
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* monitoring capabilities of the chip, the other functions will be
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* probed/matched as "normal" PC hardware devices (serial ports, fdc, so on).
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* SMSC has not deigned to release a datasheet for this particular chip
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* (though they do for others they make) so this driver was written from
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* information contained in the comment block for the Linux driver.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: smsc.c,v 1.1 2007/06/01 14:11:59 blymn Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <sys/proc.h>
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#include <sys/device.h>
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#include <sys/conf.h>
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#include <sys/time.h>
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#include <machine/bus.h>
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#include <dev/isa/isareg.h>
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#include <dev/isa/isavar.h>
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#include <dev/sysmon/sysmonvar.h>
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#include <dev/isa/smscvar.h>
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#include <machine/intr.h>
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#if defined(LMDEBUG)
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#define DPRINTF(x) do { printf x; } while (0)
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#else
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#define DPRINTF(x)
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#endif
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int smsc_probe(struct device *, struct cfdata *, void *);
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void smsc_attach(struct device *, struct device *, void *);
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static uint8_t smsc_readreg(struct smsc_softc *, int);
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/*static void smsc_writereg(struct smsc_softc *, int, int);*/
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void smsc_setup(struct smsc_softc *);
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static int smsc_gtredata(struct sysmon_envsys *, struct envsys_tre_data *);
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static int smsc_streinfo(struct sysmon_envsys *, struct envsys_basic_info *);
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CFATTACH_DECL(smsc, sizeof(struct smsc_softc),
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smsc_probe, smsc_attach, NULL, NULL);
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struct smsc_sysmon {
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struct sysmon_envsys sme;
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struct smsc_softc *sc;
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struct envsys_tre_data smsc_info[];
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};
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/*
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* Probe for the SMSC Super I/O chip
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*/
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int
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smsc_probe(struct device *parent, struct cfdata *match, void *aux)
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{
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bus_space_handle_t ioh;
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struct isa_attach_args *ia = aux;
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int rv;
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uint8_t cr;
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/* Must supply an address */
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if (ia->ia_nio < 1)
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return 0;
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if (ISA_DIRECT_CONFIG(ia))
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return 0;
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if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT)
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return 0;
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if (bus_space_map(ia->ia_iot, ia->ia_io[0].ir_addr, 2, 0, &ioh))
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return 0;
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/* To get the device ID we must enter config mode... */
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bus_space_write_1(ia->ia_iot, ioh, SMSC_ADDR, SMSC_CONFIG_START);
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/* Then select the device id register */
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bus_space_write_1(ia->ia_iot, ioh, SMSC_ADDR, SMSC_DEVICE_ID);
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/* Finally, read the id from the chip */
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cr = bus_space_read_1(ia->ia_iot, ioh, SMSC_DATA);
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/* Exit config mode, apparently this is important to do */
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bus_space_write_1(ia->ia_iot, ioh, SMSC_ADDR, SMSC_CONFIG_END);
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if (cr == SMSC_ID)
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rv = 1;
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else
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rv = 0;
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DPRINTF(("smsc: rv = %d, cr = %x\n", rv, cr));
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bus_space_unmap(ia->ia_iot, ioh, 2);
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if (rv) {
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ia->ia_nio = 1;
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ia->ia_io[0].ir_size = 2;
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ia->ia_niomem = 0;
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ia->ia_nirq = 0;
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ia->ia_ndrq = 0;
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}
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return rv;
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}
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/*
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* Get the base address for the monitoring registers and set up the
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* env sysmon framework.
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*/
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void
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smsc_attach(struct device *parent, struct device *self, void *aux)
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{
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struct smsc_softc *smsc_sc = (void *)self;
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struct isa_attach_args *ia = aux;
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bus_space_handle_t ioh;
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uint8_t rev, msb, lsb;
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unsigned address;
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smsc_sc->smsc_iot = ia->ia_iot;
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/* To attach we need to find the actual i/o register space,
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map the base registers in first. */
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if (bus_space_map(ia->ia_iot, ia->ia_io[0].ir_addr, 2, 0,
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&ioh)) {
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aprint_error(": can't map base i/o space\n");
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return;
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}
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/* Enter config mode. */
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bus_space_write_1(ia->ia_iot, ioh, SMSC_ADDR, SMSC_CONFIG_START);
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/* While we have the base registers mapped, grab the chip revision */
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bus_space_write_1(ia->ia_iot, ioh, SMSC_ADDR, SMSC_DEVICE_REVISION);
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rev = bus_space_read_1(ia->ia_iot, ioh, SMSC_DATA);
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/* Select the correct logical device */
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bus_space_write_1(ia->ia_iot, ioh, SMSC_ADDR, SMSC_LOGICAL_DEV_SEL);
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bus_space_write_1(ia->ia_iot, ioh, SMSC_DATA, SMSC_LOGICAL_DEVICE);
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/* Read the base address for the registers. */
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bus_space_write_1(ia->ia_iot, ioh, SMSC_ADDR, SMSC_IO_BASE_MSB);
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msb = bus_space_read_1(ia->ia_iot, ioh, SMSC_DATA);
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bus_space_write_1(ia->ia_iot, ioh, SMSC_ADDR, SMSC_IO_BASE_LSB);
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lsb = bus_space_read_1(ia->ia_iot, ioh, SMSC_DATA);
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address = (msb << 8) | lsb;
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/* Exit config mode */
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bus_space_write_1(ia->ia_iot, ioh, SMSC_ADDR, SMSC_CONFIG_END);
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bus_space_unmap(ia->ia_iot, ioh, 2);
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/* Map the i/o space for the registers. */
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if (bus_space_map(ia->ia_iot, address, 2, 0, &smsc_sc->smsc_ioh)) {
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aprint_error(": can't map register i/o space\n");
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return;
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}
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aprint_normal(": monitor registers at 0x%04x (rev. %u)\n",
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address, rev);
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smsc_setup(smsc_sc);
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}
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/*
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* Read the value of the given register
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*/
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static uint8_t
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smsc_readreg(struct smsc_softc *sc, int reg)
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{
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bus_space_write_1(sc->smsc_iot, sc->smsc_ioh, SMSC_ADDR, reg);
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return bus_space_read_1(sc->smsc_iot, sc->smsc_ioh, SMSC_DATA);
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}
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/*
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* Write the given value to the given register - here just for completeness
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* it is unused in the current code.
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static void
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smsc_writereg (struct smsc_softc *sc, int reg, int val)
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{
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bus_space_write_1(sc->smsc_iot, sc->smsc_ioh, SMSC_ADDR, reg);
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bus_space_write_1(sc->smsc_iot, sc->smsc_ioh, SMSC_DATA, val);
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} */
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/* convert temperature read from the chip to micro kelvin */
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static inline int
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smsc_temp2muk(uint8_t t)
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{
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int temp=t;
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return temp * 1000000 + 273150000U;
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}
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/*
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* convert register value read from chip into rpm using:
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*
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* RPM = 60/(Count * 11.111us)
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*
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* 1/1.1111us = 90kHz
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*
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*/
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static inline int
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smsc_reg2rpm(unsigned int r)
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{
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unsigned long rpm;
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if (r == 0x0)
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return 0;
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rpm = (90000 * 60) / ((unsigned long) r);
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return (int) rpm;
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}
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/* min and max temperatures in uK */
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#define SMSC_MIN_TEMP_UK ((-127 * 1000000) + 273150000)
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#define SMSC_MAX_TEMP_UK ((127 * 1000000) + 273150000)
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struct envsys_range *smsc_ranges;
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struct envsys_basic_info *smsc_info;
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/*
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* Set up the environment monitoring framework for all the devices
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* that we monitor.
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*/
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void
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smsc_setup(struct smsc_softc *sc)
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{
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struct smsc_sysmon *datap;
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int error, i;
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char label[8];
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struct envsys_range *cur_r;
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struct envsys_basic_info *cur_i;
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struct envsys_tre_data *cur_t;
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datap = malloc(sizeof(struct sysmon_envsys) + SMSC_MAX_SENSORS *
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sizeof(struct envsys_tre_data) + sizeof(void *),
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M_DEVBUF, M_WAITOK | M_ZERO);
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smsc_ranges = malloc (sizeof(struct envsys_range) * SMSC_MAX_SENSORS,
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M_DEVBUF, M_WAITOK | M_ZERO);
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smsc_info =
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malloc (sizeof(struct envsys_basic_info) * SMSC_MAX_SENSORS,
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M_DEVBUF, M_WAITOK | M_ZERO);
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for (i = 0; i < 4; i++) {
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cur_r = &smsc_ranges[i];
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cur_i = &smsc_info[i];
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cur_t = &datap->smsc_info[i];
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sprintf(label, "Temp-%d", i + 1);
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strcpy(cur_i->desc, label);
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cur_i->units = ENVSYS_STEMP;
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cur_i->sensor = i;
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cur_r->low = SMSC_MIN_TEMP_UK;
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cur_r->high = SMSC_MAX_TEMP_UK;
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cur_r->units = ENVSYS_STEMP;
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cur_i->validflags = ENVSYS_FVALID | ENVSYS_FCURVALID;
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cur_t->sensor = i;
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cur_t->warnflags = ENVSYS_WARN_OK;
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cur_t->validflags = ENVSYS_FVALID | ENVSYS_FCURVALID;
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cur_t->units = cur_i->units;
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switch (i) {
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case 0:
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sc->regs[i] = SMSC_TEMP1;
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break;
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case 1:
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sc->regs[i] = SMSC_TEMP2;
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break;
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case 2:
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sc->regs[i] = SMSC_TEMP3;
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break;
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case 3:
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sc->regs[i] = SMSC_TEMP4;
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break;
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}
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}
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for (i = 4; i < SMSC_MAX_SENSORS; i++) {
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cur_r = &smsc_ranges[i];
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cur_i = &smsc_info[i];
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cur_t = &datap->smsc_info[i];
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sprintf(label, "Fan-%d", i - 3);
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strcpy(cur_i->desc, label);
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cur_i->units = ENVSYS_SFANRPM;
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cur_i->sensor = i;
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cur_r->low = 90;
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cur_r->high = 8000;
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cur_r->units = ENVSYS_SFANRPM;
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cur_i->validflags = ENVSYS_FVALID | ENVSYS_FCURVALID;
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cur_t->sensor = i;
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cur_t->warnflags = ENVSYS_WARN_OK;
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cur_t->validflags = ENVSYS_FVALID|ENVSYS_FCURVALID;
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cur_t->units = cur_i->units;
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switch (i) {
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case 4:
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sc->regs[i] = SMSC_FAN1_LSB;
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break;
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case 5:
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sc->regs[i] = SMSC_FAN2_LSB;
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break;
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case 6:
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sc->regs[i] = SMSC_FAN3_LSB;
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break;
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case 7:
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sc->regs[i] = SMSC_FAN4_LSB;
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break;
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default:
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aprint_error(": more fans than expected");
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break;
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}
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}
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sc->smsc_sysmon = &datap->sme;
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datap->sme.sme_nsensors = SMSC_MAX_SENSORS;
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datap->sme.sme_envsys_version = 1000;
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datap->sme.sme_ranges = smsc_ranges;
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datap->sme.sme_sensor_info = smsc_info;
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datap->sme.sme_sensor_data = datap->smsc_info;
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datap->sme.sme_cookie = sc;
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datap->sme.sme_gtredata = smsc_gtredata;
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datap->sme.sme_streinfo = smsc_streinfo;
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datap->sme.sme_flags = 0;
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if ((error = sysmon_envsys_register(&datap->sme)) != 0) {
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aprint_error("%s: unable to register with sysmon (%d)\n",
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sc->sc_dev.dv_xname, error);
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return;
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}
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}
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/*
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* Get the data for the requested sensor, update the sysmon structure
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* with the retrieved value.
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*/
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static int
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smsc_gtredata(struct sysmon_envsys *sme, struct envsys_tre_data *tred)
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{
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struct smsc_softc *sc = sme->sme_cookie;
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struct envsys_tre_data *cur_tre;
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int i, reg;
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unsigned int rpm;
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uint8_t msb, lsb;
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i = tred->sensor;
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cur_tre = &sme->sme_sensor_data[i];
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reg = sc->regs[i];
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switch (cur_tre->units) {
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case ENVSYS_STEMP:
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cur_tre->cur.data_s = smsc_temp2muk(smsc_readreg(sc, reg));
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break;
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case ENVSYS_SFANRPM:
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/* reading lsb first locks msb... */
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lsb = smsc_readreg(sc, reg);
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msb = smsc_readreg(sc, reg + 1); /* XXX note explicit
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assumption that msb is
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the next register along */
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rpm = (msb << 8) | lsb;
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cur_tre->cur.data_us = smsc_reg2rpm(rpm);
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break;
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}
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cur_tre->validflags |= ENVSYS_FCURVALID | ENVSYS_FVALID;
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*tred = sme->sme_sensor_data[i];
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return 0;
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}
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/*
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* Set parameters for the monitoring - nothing to do here.
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*/
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static int
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||||
smsc_streinfo(struct sysmon_envsys *sme, struct envsys_basic_info *binfo)
|
||||
{
|
||||
|
||||
/* There is nothing to set here. */
|
||||
return (EINVAL);
|
||||
}
|
||||
|
|
@ -0,0 +1,96 @@
|
|||
/* $NetBSD: smscvar.h,v 1.1 2007/06/01 14:11:59 blymn 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.
|
||||
*/
|
||||
|
||||
#ifndef _DEV_SMSC47B397VAR_H_
|
||||
#define _DEV_SMSC47B397VAR_H_
|
||||
|
||||
/*
|
||||
* SMSC LPC47B397-NC "super-io" chip
|
||||
*/
|
||||
|
||||
#define SMSC_ADDR 0
|
||||
#define SMSC_DATA 1
|
||||
|
||||
/* Chip control registers */
|
||||
|
||||
#define SMSC_LOGICAL_DEV_SEL 0x07 /* Selector for logical device */
|
||||
#define SMSC_DEVICE_ID 0X20 /* Device ID register */
|
||||
#define SMSC_DEVICE_REVISION 0X21 /* Device revision */
|
||||
#define SMSC_IO_BASE_MSB 0x60
|
||||
#define SMSC_IO_BASE_LSB 0x61
|
||||
|
||||
|
||||
#define SMSC_LOGICAL_DEVICE 0x08 /* Magic number to select monitoring
|
||||
functions. */
|
||||
#define SMSC_CONFIG_START 0x55 /* Start configuration mode */
|
||||
#define SMSC_CONFIG_END 0xAA /* End configuration mode */
|
||||
|
||||
#define SMSC_ID 0x6F /* Chip Reset/ID */
|
||||
|
||||
/* Data registers */
|
||||
#define SMSC_TEMP1 0x25
|
||||
#define SMSC_TEMP2 0x26
|
||||
#define SMSC_TEMP3 0x27
|
||||
#define SMSC_TEMP4 0x80
|
||||
|
||||
/* NOTE: Reading the Fan LSB locks the Fan MSB. The LSB Must be read first. */
|
||||
#define SMSC_FAN1_LSB 0x28
|
||||
#define SMSC_FAN1_MSB 0x29
|
||||
#define SMSC_FAN2_LSB 0x2A
|
||||
#define SMSC_FAN2_MSB 0x2B
|
||||
#define SMSC_FAN3_LSB 0x2C
|
||||
#define SMSC_FAN3_MSB 0x2D
|
||||
#define SMSC_FAN4_LSB 0x2E
|
||||
#define SMSC_FAN4_MSB 0x2F
|
||||
|
||||
#define SMSC_MAX_SENSORS 0x08 /* 4 temp sensors, 4 fan sensors */
|
||||
|
||||
struct smsc_softc {
|
||||
struct device sc_dev;
|
||||
|
||||
bus_space_tag_t smsc_iot;
|
||||
bus_space_handle_t smsc_ioh;
|
||||
|
||||
int sc_flags;
|
||||
struct sysmon_envsys *smsc_sysmon;
|
||||
uint8_t numsensors;
|
||||
|
||||
uint8_t regs[SMSC_MAX_SENSORS];
|
||||
};
|
||||
|
||||
#endif /* _DEV_SMSC47B397VAR_H_ */
|
||||
Loading…
Reference in New Issue