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freebsd/sys/dev/ipmi/ipmi_pci.c
Doug Ambrisko 37b1ce132c Add an OpenIPMI mostly compatible driver. This driver was developed 
to work with ipmitools.  It works with other tools that have an OpenIPMI
driver interface.  The port will need to get updated to used this.
I have not implemented the IPMB mode yet so ioctl's for that don't
really do much otherwise it should work like the OpenIPMI version.
The ipmi.h definitions was derived from the ipmitool header file.
The bus attachments are done for smbios and pci/smbios.  Differences
in bus probe order for modules/static are delt with.  ACPI attachment
should be done.

This drivers registers with the watchdod(4) interface

Work to do:
     - BT interface
     - IPMB mode

This has been tested on Dell PE2850, PE2650 & PE850 with i386 & amd64
kernel.

I will link this into the build on next week.

Tom Rhodes, helped me with the man page.

Sponsored by:   IronPort Systems Inc.
Inspired from:  ipmitool & Linux
2006-02-10 20:51:35 +00:00

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/*-
* 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/malloc.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/selinfo.h>
#include <sys/bus.h>
#include <sys/conf.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <sys/rman.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#ifdef LOCAL_MODULE
#include <ipmivars.h>
#else
#include <dev/ipmi/ipmivars.h>
#endif
static int ipmi_pci_probe(device_t dev);
static int ipmi_pci_attach(device_t dev);
static int ipmi_pci_detach(device_t dev);
static device_method_t ipmi_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, ipmi_pci_probe),
DEVMETHOD(device_attach, ipmi_pci_attach),
DEVMETHOD(device_detach, ipmi_pci_detach),
{ 0, 0 }
};
struct ipmi_ident
{
u_int16_t vendor;
u_int16_t device;
char *desc;
} ipmi_identifiers[] = {
{0x1028, 0x000d, "Dell PE2650 SMIC interface"},
{0, 0, 0}
};
static int
ipmi_pci_probe(device_t dev) {
struct ipmi_ident *m;
if (ipmi_attached)
return ENXIO;
for (m = ipmi_identifiers; m->vendor != 0; m++) {
if ((m->vendor == pci_get_vendor(dev)) &&
(m->device == pci_get_device(dev))) {
device_set_desc(dev, m->desc);
return (BUS_PROBE_DEFAULT);
}
}
return ENXIO;
}
static int
ipmi_pci_attach(device_t dev) {
struct ipmi_softc *sc = device_get_softc(dev);
device_t parent, smbios_attach_dev = NULL;
devclass_t dc;
int status, flags;
int error;
/*
* We need to attach to something that can address the BIOS/
* SMBIOS memory range. This is usually the isa bus however
* during a static kernel boot the isa bus is not available
* so we run up the tree to the nexus bus. A module load
* will use the isa bus attachment. If neither work bail
* since the SMBIOS defines stuff we need to know to attach to
* this device.
*/
dc = devclass_find("isa");
if (dc != NULL) {
smbios_attach_dev = devclass_get_device(dc, 0);
}
if (smbios_attach_dev == NULL) {
smbios_attach_dev = dev;
for (;;) {
parent = device_get_parent(smbios_attach_dev);
if (parent == NULL)
break;
if (strcmp(device_get_name(smbios_attach_dev),
"nexus") == 0)
break;
smbios_attach_dev = parent;
}
}
if (smbios_attach_dev == NULL) {
device_printf(dev, "Couldn't find isa/nexus device\n");
goto bad;
}
sc->ipmi_smbios_dev = ipmi_smbios_identify(NULL, smbios_attach_dev);
if (sc->ipmi_smbios_dev == NULL) {
device_printf(dev, "Couldn't find isa device\n");
goto bad;
}
error = ipmi_smbios_probe(sc->ipmi_smbios_dev);
if (error != 0) {
goto bad;
}
sc->ipmi_dev = dev;
error = ipmi_smbios_query(dev);
device_delete_child(dev, sc->ipmi_smbios_dev);
if (error != 0)
goto bad;
/* Now we know about the IPMI attachment info. */
if (sc->ipmi_bios_info.kcs_mode) {
if (sc->ipmi_bios_info.io_mode)
device_printf(dev, "KCS mode found at io 0x%llx "
"alignment 0x%x on %s\n",
(long long)sc->ipmi_bios_info.address,
sc->ipmi_bios_info.offset,
device_get_name(device_get_parent(sc->ipmi_dev)));
else
device_printf(dev, "KCS mode found at mem 0x%llx "
"alignment 0x%x on %s\n",
(long long)sc->ipmi_bios_info.address,
sc->ipmi_bios_info.offset,
device_get_name(device_get_parent(sc->ipmi_dev)));
sc->ipmi_kcs_status_reg = sc->ipmi_bios_info.offset;
sc->ipmi_kcs_command_reg = sc->ipmi_bios_info.offset;
sc->ipmi_kcs_data_out_reg = 0;
sc->ipmi_kcs_data_in_reg = 0;
if (sc->ipmi_bios_info.io_mode) {
sc->ipmi_io_rid = PCIR_BAR(0);
sc->ipmi_io_res = bus_alloc_resource(dev,
SYS_RES_IOPORT, &sc->ipmi_io_rid,
sc->ipmi_bios_info.address,
sc->ipmi_bios_info.address +
(sc->ipmi_bios_info.offset * 2),
sc->ipmi_bios_info.offset * 2,
RF_ACTIVE);
} else {
sc->ipmi_mem_rid = PCIR_BAR(0);
sc->ipmi_mem_res = bus_alloc_resource(dev,
SYS_RES_MEMORY, &sc->ipmi_mem_rid,
sc->ipmi_bios_info.address,
sc->ipmi_bios_info.address +
(sc->ipmi_bios_info.offset * 2),
sc->ipmi_bios_info.offset * 2,
RF_ACTIVE);
}
if (!sc->ipmi_io_res){
device_printf(dev, "couldn't configure pci io res\n");
goto bad;
}
status = INB(sc, sc->ipmi_kcs_status_reg);
if (status == 0xff) {
device_printf(dev, "couldn't find it\n");
goto bad;
}
if(status & KCS_STATUS_OBF){
ipmi_read(dev, NULL, 0);
}
} else if (sc->ipmi_bios_info.smic_mode) {
if (sc->ipmi_bios_info.io_mode)
device_printf(dev, "SMIC mode found at io 0x%llx "
"alignment 0x%x on %s\n",
(long long)sc->ipmi_bios_info.address,
sc->ipmi_bios_info.offset,
device_get_name(device_get_parent(sc->ipmi_dev)));
else
device_printf(dev, "SMIC mode found at mem 0x%llx "
"alignment 0x%x on %s\n",
(long long)sc->ipmi_bios_info.address,
sc->ipmi_bios_info.offset,
device_get_name(device_get_parent(sc->ipmi_dev)));
sc->ipmi_smic_data = 0;
sc->ipmi_smic_ctl_sts = sc->ipmi_bios_info.offset;
sc->ipmi_smic_flags = sc->ipmi_bios_info.offset * 2;
if (sc->ipmi_bios_info.io_mode) {
sc->ipmi_io_rid = PCIR_BAR(0);
sc->ipmi_io_res = bus_alloc_resource(dev,
SYS_RES_IOPORT, &sc->ipmi_io_rid,
sc->ipmi_bios_info.address,
sc->ipmi_bios_info.address +
(sc->ipmi_bios_info.offset * 3),
sc->ipmi_bios_info.offset * 3,
RF_ACTIVE);
} else {
sc->ipmi_mem_rid = PCIR_BAR(0);
sc->ipmi_mem_res = bus_alloc_resource(dev,
SYS_RES_MEMORY, &sc->ipmi_mem_rid,
sc->ipmi_bios_info.address,
sc->ipmi_bios_info.address +
(sc->ipmi_bios_info.offset * 2),
sc->ipmi_bios_info.offset * 2,
RF_ACTIVE);
}
if (!sc->ipmi_io_res && !sc->ipmi_mem_res){
device_printf(dev, "couldn't configure pci res\n");
goto bad;
}
flags = INB(sc, sc->ipmi_smic_flags);
if (flags == 0xff) {
device_printf(dev, "couldn't find it\n");
goto bad;
}
if ((flags & SMIC_STATUS_SMS_ATN)
&& (flags & SMIC_STATUS_RX_RDY)){
ipmi_read(dev, NULL, 0);
}
} else {
device_printf(dev, "No IPMI interface found\n");
goto bad;
}
ipmi_attach(dev);
sc->ipmi_irq_rid = 0;
sc->ipmi_irq_res = bus_alloc_resource_any(sc->ipmi_dev, SYS_RES_IRQ,
&sc->ipmi_irq_rid, RF_SHAREABLE | RF_ACTIVE);
if (sc->ipmi_irq_res == NULL) {
device_printf(sc->ipmi_dev, "can't allocate interrupt\n");
} else {
if (bus_setup_intr(sc->ipmi_dev, sc->ipmi_irq_res,
INTR_TYPE_MISC, ipmi_intr,
sc->ipmi_dev, &sc->ipmi_irq)) {
device_printf(sc->ipmi_dev,
"can't set up interrupt\n");
return (EINVAL);
}
}
return 0;
bad:
return ENXIO;
}
static int ipmi_pci_detach(device_t dev) {
struct ipmi_softc *sc;
sc = device_get_softc(dev);
ipmi_detach(dev);
if (sc->ipmi_ev_tag)
EVENTHANDLER_DEREGISTER(watchdog_list, sc->ipmi_ev_tag);
if (sc->ipmi_mem_res)
bus_release_resource(dev, SYS_RES_MEMORY, sc->ipmi_mem_rid,
sc->ipmi_mem_res);
if (sc->ipmi_io_res)
bus_release_resource(dev, SYS_RES_IOPORT, sc->ipmi_io_rid,
sc->ipmi_io_res);
if (sc->ipmi_irq)
bus_teardown_intr(sc->ipmi_dev, sc->ipmi_irq_res,
sc->ipmi_irq);
if (sc->ipmi_irq_res)
bus_release_resource(sc->ipmi_dev, SYS_RES_IRQ,
sc->ipmi_irq_rid, sc->ipmi_irq_res);
return 0;
}
static driver_t ipmi_pci_driver = {
"ipmi",
ipmi_methods,
sizeof(struct ipmi_softc)
};
DRIVER_MODULE(ipmi_foo, pci, ipmi_pci_driver, ipmi_devclass, 0, 0);
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