diff options
author | Mark Kettenis <kettenis@cvs.openbsd.org> | 2009-09-19 19:37:43 +0000 |
---|---|---|
committer | Mark Kettenis <kettenis@cvs.openbsd.org> | 2009-09-19 19:37:43 +0000 |
commit | dc3a8ded80720d43840f949cc2140741d4bf734c (patch) | |
tree | 794574da2ab59fff26ecac7cd83b2a81094113cb | |
parent | 742ccd187ed5f1294119f82a23a55e640d3e42e1 (diff) |
Initial stab at a driver for LOMlite2 as found on the Sun Fire V100, Sun Fire
V120 and Sun Netra X1. For now this only provides a temperature sensor, but
more stuff will follow.
-rw-r--r-- | sys/arch/sparc64/conf/GENERIC | 3 | ||||
-rw-r--r-- | sys/arch/sparc64/conf/files.sparc64 | 6 | ||||
-rw-r--r-- | sys/arch/sparc64/dev/lom.c | 166 |
3 files changed, 173 insertions, 2 deletions
diff --git a/sys/arch/sparc64/conf/GENERIC b/sys/arch/sparc64/conf/GENERIC index dfead45fc6d..d597bd042ee 100644 --- a/sys/arch/sparc64/conf/GENERIC +++ b/sys/arch/sparc64/conf/GENERIC @@ -1,4 +1,4 @@ -# $OpenBSD: GENERIC,v 1.243 2009/09/01 19:15:42 kettenis Exp $ +# $OpenBSD: GENERIC,v 1.244 2009/09/19 19:37:42 kettenis Exp $ # # For further information on compiling OpenBSD kernels, see the config(8) # man page. @@ -312,6 +312,7 @@ lpt* at ebus? bbc* at ebus? led* at ebus? +lom* at ebus? pmc* at ebus? ppm* at ebus? diff --git a/sys/arch/sparc64/conf/files.sparc64 b/sys/arch/sparc64/conf/files.sparc64 index ac70dfdf778..3ff06f05cc6 100644 --- a/sys/arch/sparc64/conf/files.sparc64 +++ b/sys/arch/sparc64/conf/files.sparc64 @@ -1,4 +1,4 @@ -# $OpenBSD: files.sparc64,v 1.126 2009/07/05 17:13:25 kettenis Exp $ +# $OpenBSD: files.sparc64,v 1.127 2009/09/19 19:37:42 kettenis Exp $ # $NetBSD: files.sparc64,v 1.50 2001/08/10 20:53:50 eeh Exp $ # maxpartitions must be first item in files.${ARCH} @@ -217,6 +217,10 @@ device led attach led at ebus file arch/sparc64/dev/led.c led +device lom +attach lom at ebus +file arch/sparc64/dev/lom.c lom + device pmc attach pmc at ebus file arch/sparc64/dev/pmc.c pmc diff --git a/sys/arch/sparc64/dev/lom.c b/sys/arch/sparc64/dev/lom.c new file mode 100644 index 00000000000..48a4c9e395e --- /dev/null +++ b/sys/arch/sparc64/dev/lom.c @@ -0,0 +1,166 @@ +/* $OpenBSD: lom.c,v 1.1 2009/09/19 19:37:42 kettenis Exp $ */ +/* + * Copyright (c) 2008 Mark Kettenis + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include <sys/param.h> +#include <sys/device.h> +#include <sys/sensors.h> +#include <sys/systm.h> + +#include <machine/autoconf.h> +#include <machine/openfirm.h> + +#include <sparc64/dev/ebusreg.h> +#include <sparc64/dev/ebusvar.h> + +/* + * The LOM is implemented as a H8/3437 microcontroller which has its + * on-chip host interface hooked up to EBus. + */ +#define LOM_DATA 0x00 /* R/W */ +#define LOM_CMD 0x01 /* W */ +#define LOM_STATUS 0x01 /* R */ +#define LOM_STATUS_OBF 0x01 /* Output Buffer Full */ +#define LOM_STATUS_IBF 0x02 /* Input Buffer Full */ + +#define LOM_IDX_FW_REV 0x01 /* Firmware revision */ + +#define LOM_IDX_TEMP1 0x18 /* Temperature */ + +#define LOM_IDX_PROBE55 0x7e /* Always returns 0x55 */ +#define LOM_IDX_PROBEAA 0x7f /* Always returns 0xaa */ + +struct lom_softc { + struct device sc_dev; + bus_space_tag_t sc_iot; + bus_space_handle_t sc_ioh; + + struct ksensor sc_sensor; + struct ksensordev sc_sensordev; +}; + +int lom_match(struct device *, void *, void *); +void lom_attach(struct device *, struct device *, void *); + +struct cfattach lom_ca = { + sizeof(struct lom_softc), lom_match, lom_attach +}; + +struct cfdriver lom_cd = { + NULL, "lom", DV_DULL +}; + +int lom_read(struct lom_softc *, uint8_t, uint8_t *); +int lom_write(struct lom_softc *, uint8_t, uint8_t); + +void lom_refresh(void *); + +int +lom_match(struct device *parent, void *match, void *aux) +{ + struct ebus_attach_args *ea = aux; + + if (strcmp(ea->ea_name, "SUNW,lomh") == 0) + return (1); + + return (0); +} + +void +lom_attach(struct device *parent, struct device *self, void *aux) +{ + struct lom_softc *sc = (void *)self; + struct ebus_attach_args *ea = aux; + uint8_t reg, fw_rev; + + sc->sc_iot = ea->ea_memtag; + if (ebus_bus_map(ea->ea_memtag, 0, + EBUS_PADDR_FROM_REG(&ea->ea_regs[0]), + ea->ea_regs[0].size, 0, 0, &sc->sc_ioh)) { + printf(": can't map register space\n"); + return; + } + + if (lom_read(sc, LOM_IDX_PROBE55, ®) || reg != 0x55 || + lom_read(sc, LOM_IDX_PROBEAA, ®) || reg != 0xaa || + lom_read(sc, LOM_IDX_FW_REV, &fw_rev)) { + printf(": not responding\n"); + return; + } + + /* Initialize sensor data. */ + strlcpy(sc->sc_sensordev.xname, sc->sc_dev.dv_xname, + sizeof(sc->sc_sensordev.xname)); + sc->sc_sensor.type = SENSOR_TEMP; + + sensor_attach(&sc->sc_sensordev, &sc->sc_sensor); + + if (sensor_task_register(sc, lom_refresh, 5) == NULL) { + printf(": unable to register update task\n"); + return; + } + + sensordev_install(&sc->sc_sensordev); + + printf(": rev %d.%d\n", fw_rev >> 4, fw_rev & 0x0f); +} + +int +lom_read(struct lom_softc *sc, uint8_t reg, uint8_t *val) +{ + uint8_t str; + int i; + + /* Wait for input buffer to become available. */ + for (i = 1000; i > 0; i--) { + str = bus_space_read_1(sc->sc_iot, sc->sc_ioh, LOM_STATUS); + delay(10); + if ((str & LOM_STATUS_IBF) == 0) + break; + } + if (i == 0) + return (ETIMEDOUT); + + bus_space_write_1(sc->sc_iot, sc->sc_ioh, LOM_CMD, reg); + + /* Wait until the microcontroller fills output buffer. */ + for (i = 1000; i > 0; i--) { + str = bus_space_read_1(sc->sc_iot, sc->sc_ioh, LOM_STATUS); + delay(10); + if (str & 0x01) + break; + } + if (i == 0) + return (ETIMEDOUT); + + *val = bus_space_read_1(sc->sc_iot, sc->sc_ioh, LOM_DATA); + return (0); +} + +void +lom_refresh(void *arg) +{ + struct lom_softc *sc = arg; + uint8_t val; + + if (lom_read(sc, LOM_IDX_TEMP1, &val)) { + sc->sc_sensor.flags |= SENSOR_FINVALID; + return; + } + + sc->sc_sensor.value = val * 1000000 + 273150000; + sc->sc_sensor.flags &= ~SENSOR_FINVALID; +} |