diff options
author | mdodd <mdodd@FreeBSD.org> | 2003-03-24 19:32:57 +0000 |
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committer | mdodd <mdodd@FreeBSD.org> | 2003-03-24 19:32:57 +0000 |
commit | ea0ea0c401d91deef1170ec57da76c014c284feb (patch) | |
tree | f9ec6a05a4298589cb8045d918001f476fc65e10 /sys/i386/bios/vpd.c | |
parent | 639a37daa0ebf45c523295d31cafd712c70f3ccd (diff) | |
download | FreeBSD-src-ea0ea0c401d91deef1170ec57da76c014c284feb.zip FreeBSD-src-ea0ea0c401d91deef1170ec57da76c014c284feb.tar.gz |
Add the 'vpd' and 'smbios' drivers. The 'smbios' driver is just a
stub right now.
Diffstat (limited to 'sys/i386/bios/vpd.c')
-rw-r--r-- | sys/i386/bios/vpd.c | 301 |
1 files changed, 301 insertions, 0 deletions
diff --git a/sys/i386/bios/vpd.c b/sys/i386/bios/vpd.c new file mode 100644 index 0000000..dd07352 --- /dev/null +++ b/sys/i386/bios/vpd.c @@ -0,0 +1,301 @@ +/*- + * Copyright (c) 2003 Matthew N. Dodd <winter@jurai.net> + * 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. + * + * $FreeBSD$ + */ + +/* + * VPD decoder for IBM systems (Thinkpads) + * http://www-1.ibm.com/support/docview.wss?uid=psg1MIGR-45120 + */ + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/kernel.h> +#include <sys/socket.h> +#include <sys/sysctl.h> + +#include <sys/module.h> +#include <sys/bus.h> + +#include <machine/bus.h> +#include <machine/resource.h> +#include <sys/rman.h> + +#include <vm/vm.h> +#include <vm/pmap.h> +#include <machine/md_var.h> +#include <machine/pc/bios.h> + +/* + * Vital Product Data + */ +struct vpd { + u_int16_t Header; /* 0x55AA */ + u_int8_t Signature[3]; /* Always 'VPD' */ + u_int8_t Length; /* Sructure Length */ + + u_int8_t Reserved[7]; /* Reserved */ + + u_int8_t BuildID[9]; /* BIOS Build ID */ + u_int8_t BoxSerial[7]; /* Box Serial Number */ + u_int8_t PlanarSerial[11]; /* Motherboard Serial Number */ + u_int8_t MachType[7]; /* Machine Type/Model */ + u_int8_t Checksum; /* Checksum */ +} __packed; + +struct vpd_softc { + device_t dev; + struct resource * res; + int rid; + + struct vpd * vpd; + + struct sysctl_ctx_list ctx; + + char BuildID[10]; + char BoxSerial[8]; + char PlanarSerial[12]; + char MachineType[5]; + char MachineModel[4]; +}; + +#define VPD_START 0xf0000 +#define VPD_STEP 0x10 +#define VPD_OFF 2 +#define VPD_LEN 3 +#define VPD_SIG "VPD" + +#define RES2VPD(res) ((struct vpd *)rman_get_virtual(res)) +#define ADDR2VPD(addr) ((struct vpd *)BIOS_PADDRTOVADDR(addr)) + +static devclass_t vpd_devclass; + +static void vpd_identify (driver_t *, device_t); +static int vpd_probe (device_t); +static int vpd_attach (device_t); +static int vpd_detach (device_t); +static int vpd_modevent (module_t, int, void *); + +static int vpd_cksum (struct vpd *); + +SYSCTL_NODE(_hw, OID_AUTO, vpd, CTLFLAG_RD, NULL, NULL); +SYSCTL_NODE(_hw_vpd, OID_AUTO, machine, CTLFLAG_RD, NULL, NULL); +SYSCTL_NODE(_hw_vpd_machine, OID_AUTO, type, CTLFLAG_RD, NULL, NULL); +SYSCTL_NODE(_hw_vpd_machine, OID_AUTO, model, CTLFLAG_RD, NULL, NULL); +SYSCTL_NODE(_hw_vpd, OID_AUTO, build_id, CTLFLAG_RD, NULL, NULL); +SYSCTL_NODE(_hw_vpd, OID_AUTO, serial, CTLFLAG_RD, NULL, NULL); +SYSCTL_NODE(_hw_vpd_serial, OID_AUTO, box, CTLFLAG_RD, NULL, NULL); +SYSCTL_NODE(_hw_vpd_serial, OID_AUTO, planar, CTLFLAG_RD, NULL, NULL); + +static void +vpd_identify (driver_t *driver, device_t parent) +{ + device_t child; + u_int32_t addr; + int length; + int rid; + + if (!device_is_alive(parent)) + return; + + addr = bios_sigsearch(VPD_START, VPD_SIG, VPD_LEN, VPD_STEP, VPD_OFF); + if (addr != 0) { + rid = 0; + length = ADDR2VPD(addr)->Length; + + child = BUS_ADD_CHILD(parent, 0, "vpd", -1); + device_set_driver(child, driver); + bus_set_resource(child, SYS_RES_MEMORY, rid, addr, length); + device_set_desc(child, "Vital Product Data Area"); + } + + return; +} + +static int +vpd_probe (device_t dev) +{ + struct resource *res; + int rid; + int error; + + error = 0; + rid = 0; + res = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid, + 0ul, ~0ul, 1, RF_ACTIVE); + if (res == NULL) { + device_printf(dev, "Unable to allocate memory resource.\n"); + error = ENOMEM; + goto bad; + } + + if (vpd_cksum(RES2VPD(res))) { + device_printf(dev, "VPD checksum failed.\n"); + error = ENXIO; + goto bad; + } + +bad: + if (res) + bus_release_resource(dev, SYS_RES_MEMORY, rid, res); + return (error); +} + +static int +vpd_attach (device_t dev) +{ + struct vpd_softc *sc; + char unit[4]; + int error; + + sc = device_get_softc(dev); + error = 0; + + sc->dev = dev; + sc->rid = 0; + sc->res = bus_alloc_resource(dev, SYS_RES_MEMORY, &sc->rid, + 0ul, ~0ul, 1, RF_ACTIVE); + if (sc->res == NULL) { + device_printf(dev, "Unable to allocate memory resource.\n"); + error = ENOMEM; + goto bad; + } + sc->vpd = RES2VPD(sc->res); + + snprintf(unit, sizeof(unit), "%d", device_get_unit(sc->dev)); + snprintf(sc->MachineType, 5, "%.4s", sc->vpd->MachType); + snprintf(sc->MachineModel, 4, "%.3s", sc->vpd->MachType+4); + snprintf(sc->BuildID, 10, "%.9s", sc->vpd->BuildID); + snprintf(sc->BoxSerial, 8, "%.7s", sc->vpd->BoxSerial); + snprintf(sc->PlanarSerial, 12, "%.11s", sc->vpd->PlanarSerial); + + sysctl_ctx_init(&sc->ctx); + SYSCTL_ADD_STRING(&sc->ctx, + SYSCTL_STATIC_CHILDREN(_hw_vpd_machine_type), OID_AUTO, + unit, CTLFLAG_RD|CTLFLAG_DYN, sc->MachineType, 0, NULL); + SYSCTL_ADD_STRING(&sc->ctx, + SYSCTL_STATIC_CHILDREN(_hw_vpd_machine_model), OID_AUTO, + unit, CTLFLAG_RD|CTLFLAG_DYN, sc->MachineModel, 0, NULL); + SYSCTL_ADD_STRING(&sc->ctx, + SYSCTL_STATIC_CHILDREN(_hw_vpd_build_id), OID_AUTO, + unit, CTLFLAG_RD|CTLFLAG_DYN, sc->BuildID, 0, NULL); + SYSCTL_ADD_STRING(&sc->ctx, + SYSCTL_STATIC_CHILDREN(_hw_vpd_serial_box), OID_AUTO, + unit, CTLFLAG_RD|CTLFLAG_DYN, sc->BoxSerial, 0, NULL); + SYSCTL_ADD_STRING(&sc->ctx, + SYSCTL_STATIC_CHILDREN(_hw_vpd_serial_planar), OID_AUTO, + unit, CTLFLAG_RD|CTLFLAG_DYN, sc->PlanarSerial, 0, NULL); + + device_printf(dev, "Machine Type: %.4s, Model: %.3s, Build ID: %.9s\n", + sc->MachineType, sc->MachineModel, sc->BuildID); + device_printf(dev, "Box Serial: %.7s, Planar Serial: %.11s\n", + sc->BoxSerial, sc->PlanarSerial); + + return (0); +bad: + if (sc->res) + bus_release_resource(dev, SYS_RES_MEMORY, sc->rid, sc->res); + return (error); +} + +static int +vpd_detach (device_t dev) +{ + struct vpd_softc *sc; + + sc = device_get_softc(dev); + + if (sc->res) + bus_release_resource(dev, SYS_RES_MEMORY, sc->rid, sc->res); + + sysctl_ctx_free(&sc->ctx); + + return (0); +} + +static int +vpd_modevent (mod, what, arg) + module_t mod; + int what; + void * arg; +{ + device_t * devs; + int count; + int i; + + switch (what) { + case MOD_LOAD: + break; + case MOD_UNLOAD: + devclass_get_devices(vpd_devclass, &devs, &count); + for (i = 0; i < count; i++) { + device_delete_child(device_get_parent(devs[i]), devs[i]); + } + break; + default: + break; + } + + return (0); +} + +static device_method_t vpd_methods[] = { + /* Device interface */ + DEVMETHOD(device_identify, vpd_identify), + DEVMETHOD(device_probe, vpd_probe), + DEVMETHOD(device_attach, vpd_attach), + DEVMETHOD(device_detach, vpd_detach), + { 0, 0 } +}; + +static driver_t vpd_driver = { + "vpd", + vpd_methods, + sizeof(struct vpd_softc), +}; + +DRIVER_MODULE(vpd, nexus, vpd_driver, vpd_devclass, vpd_modevent, 0); +MODULE_VERSION(vpd, 1); + +static int +vpd_cksum (struct vpd *v) +{ + u_int8_t *ptr; + u_int8_t cksum; + int i; + + ptr = (u_int8_t *)v; + cksum = 0; + for (i = 0; i < v->Length ; i++) { + cksum += ptr[i]; + } + + /* XXX: For some reason this isn't right. */ + printf("VPD cksum: 0x%02x\n", cksum); + cksum = 0; + + return (cksum); +} |