diff options
Diffstat (limited to 'sys/dev/ipmi/ipmi_acpi.c')
| -rw-r--r-- | sys/dev/ipmi/ipmi_acpi.c | 210 |
1 files changed, 210 insertions, 0 deletions
diff --git a/sys/dev/ipmi/ipmi_acpi.c b/sys/dev/ipmi/ipmi_acpi.c new file mode 100644 index 0000000..e2518eb --- /dev/null +++ b/sys/dev/ipmi/ipmi_acpi.c @@ -0,0 +1,210 @@ +/*- + * Copyright (c) 2006 IronPort Systems Inc. <ambrisko@ironport.com> + * All rights reserved. + * + * 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. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/bus.h> +#include <sys/condvar.h> +#include <sys/kernel.h> +#include <sys/module.h> +#include <sys/rman.h> +#include <sys/selinfo.h> + +#include <contrib/dev/acpica/acpi.h> +#include <dev/acpica/acpivar.h> + +/* Hooks for the ACPI CA debugging infrastructure */ +#define _COMPONENT ACPI_BUTTON +ACPI_MODULE_NAME("IPMI") + +#ifdef LOCAL_MODULE +#include <ipmi.h> +#include <ipmivars.h> +#else +#include <sys/ipmi.h> +#include <dev/ipmi/ipmivars.h> +#endif + +static int ipmi_acpi_probe(device_t); +static int ipmi_acpi_attach(device_t); + +int +ipmi_acpi_probe(device_t dev) +{ + static char *ipmi_ids[] = {"IPI0001", NULL}; + + if (ipmi_attached) + return (EBUSY); + + if (acpi_disabled("ipmi") || + ACPI_ID_PROBE(device_get_parent(dev), dev, ipmi_ids) == NULL) + return (ENXIO); + + device_set_desc(dev, "IPMI System Interface"); + + return (0); +} + +static int +ipmi_acpi_attach(device_t dev) +{ + ACPI_HANDLE devh; + const char *mode; + struct ipmi_get_info info; + struct ipmi_softc *sc = device_get_softc(dev); + int count, error, flags, i, type; + int interface_type = 0, interface_version = 0; + + error = 0; + devh = acpi_get_handle(dev); + if (ACPI_FAILURE(acpi_GetInteger(devh, "_IFT", &interface_type))) + return (ENXIO); + + if (ACPI_FAILURE(acpi_GetInteger(devh, "_SRV", &interface_version))) + return (ENXIO); + + switch (interface_type) { + case KCS_MODE: + count = 2; + mode = "KCS"; + break; + case SMIC_MODE: + count = 3; + mode = "SMIC"; + break; + case BT_MODE: + device_printf(dev, "BT interface not supported\n"); + return (ENXIO); + case SSIF_MODE: + if (ACPI_FAILURE(acpi_GetInteger(devh, "_ADR", &flags))) + return (ENXIO); + info.address = flags >> 1; + device_printf(dev, "SSIF interface not supported on ACPI\n"); + return (0); + default: + return (ENXIO); + } + + if (bus_get_resource(dev, SYS_RES_IOPORT, 0, NULL, NULL) == 0) + type = SYS_RES_IOPORT; + else if (bus_get_resource(dev, SYS_RES_MEMORY, 0, NULL, NULL) == 0) + type = SYS_RES_MEMORY; + else { + device_printf(dev, "unknown resource type\n"); + return (ENXIO); + } + + sc->ipmi_io_rid = 0; + sc->ipmi_io_res[0] = bus_alloc_resource_any(dev, type, + &sc->ipmi_io_rid, RF_ACTIVE); + sc->ipmi_io_type = type; + sc->ipmi_io_spacing = 1; + if (sc->ipmi_io_res[0] == NULL) { + device_printf(dev, "couldn't configure I/O resource\n"); + return (ENXIO); + } + + /* If we have multiple resources, allocate up to MAX_RES. */ + for (i = 1; i < MAX_RES; i++) { + sc->ipmi_io_rid = i; + sc->ipmi_io_res[i] = bus_alloc_resource_any(dev, type, + &sc->ipmi_io_rid, RF_ACTIVE); + if (sc->ipmi_io_res[i] == NULL) + break; + } + sc->ipmi_io_rid = 0; + + /* If we have multiple resources, make sure we have enough of them. */ + if (sc->ipmi_io_res[1] != NULL && sc->ipmi_io_res[count - 1] == NULL) { + device_printf(dev, "too few I/O resources\n"); + error = ENXIO; + goto bad; + } + + device_printf(dev, "%s mode found at %s 0x%jx on %s\n", + mode, type == SYS_RES_IOPORT ? "io" : "mem", + (uintmax_t)rman_get_start(sc->ipmi_io_res[0]), + device_get_name(device_get_parent(dev))); + + sc->ipmi_dev = dev; + + /* + * Setup an interrupt if we have an interrupt resource. We + * don't support GPE interrupts via _GPE yet. + */ + sc->ipmi_irq_rid = 0; + sc->ipmi_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, + &sc->ipmi_irq_rid, RF_SHAREABLE | RF_ACTIVE); + + /* Warn if _GPE exists. */ + if (ACPI_SUCCESS(AcpiEvaluateObject(devh, "_GPE", NULL, NULL))) + device_printf(dev, "_GPE support not implemented\n"); + + /* + * We assume an alignment of 1 byte as currently the IPMI spec + * doesn't provide any way to determine the alignment via ACPI. + */ + switch (interface_type) { + case KCS_MODE: + error = ipmi_kcs_attach(sc); + if (error) + goto bad; + break; + case SMIC_MODE: + error = ipmi_smic_attach(sc); + if (error) + goto bad; + break; + } + error = ipmi_attach(dev); + if (error) + goto bad; + + return (0); +bad: + ipmi_release_resources(dev); + return (error); +} + +static device_method_t ipmi_methods[] = { + /* Device interface */ + DEVMETHOD(device_probe, ipmi_acpi_probe), + DEVMETHOD(device_attach, ipmi_acpi_attach), + DEVMETHOD(device_detach, ipmi_detach), + { 0, 0 } +}; + +static driver_t ipmi_acpi_driver = { + "ipmi", + ipmi_methods, + sizeof(struct ipmi_softc), +}; + +DRIVER_MODULE(ipmi_acpi, acpi, ipmi_acpi_driver, ipmi_devclass, 0, 0); +MODULE_DEPEND(ipmi_acpi, acpi, 1, 1, 1); |
