OpenSolaris_b135/uts/intel/io/intel_nhm/intel_nhmdrv.c
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2009 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#include <sys/types.h>
#include <sys/time.h>
#include <sys/nvpair.h>
#include <sys/cmn_err.h>
#include <sys/cred.h>
#include <sys/open.h>
#include <sys/ddi.h>
#include <sys/sunddi.h>
#include <sys/conf.h>
#include <sys/modctl.h>
#include <sys/cyclic.h>
#include <sys/errorq.h>
#include <sys/stat.h>
#include <sys/cpuvar.h>
#include <sys/mc_intel.h>
#include <sys/mc.h>
#include <sys/fm/protocol.h>
#include "nhm_log.h"
#include "intel_nhm.h"
int max_bus_number = 0xff;
nvlist_t *inhm_mc_nvl[MAX_CPU_NODES];
krwlock_t inhm_mc_lock;
char *inhm_mc_snapshot[MAX_CPU_NODES];
uint_t nhm_config_gen;
uint_t inhm_mc_snapshotgen;
size_t inhm_mc_snapshotsz[MAX_CPU_NODES];
static dev_info_t *inhm_dip;
int nhm_allow_detach = 0;
extern int nhm_patrol_scrub;
extern int nhm_demand_scrub;
extern int nhm_no_smbios;
extern int nhm_smbios_serial;
extern int nhm_smbios_manufacturer;
extern int nhm_smbios_part_number;
extern int nhm_smbios_version;
extern int nhm_smbios_label;
extern void inhm_create_nvl(int);
extern char *inhm_mc_name(void);
extern void init_dimms(void);
extern void nhm_smbios();
static void
inhm_mc_snapshot_destroy()
{
int i;
ASSERT(RW_LOCK_HELD(&inhm_mc_lock));
for (i = 0; i < MAX_CPU_NODES; i++) {
if (inhm_mc_snapshot[i] == NULL)
continue;
kmem_free(inhm_mc_snapshot[i], inhm_mc_snapshotsz[i]);
inhm_mc_snapshot[i] = NULL;
inhm_mc_snapshotsz[i] = 0;
}
inhm_mc_snapshotgen++;
}
static int
inhm_mc_snapshot_update()
{
int i;
int rt = 0;
ASSERT(RW_LOCK_HELD(&inhm_mc_lock));
for (i = 0; i < MAX_CPU_NODES; i++) {
if (inhm_mc_snapshot[i] != NULL)
continue;
if (nvlist_pack(inhm_mc_nvl[i], &inhm_mc_snapshot[i],
&inhm_mc_snapshotsz[i], NV_ENCODE_XDR, KM_SLEEP) != 0)
rt = -1;
}
return (rt);
}
/*ARGSUSED*/
static int
inhm_mc_ioctl(dev_t dev, int cmd, intptr_t arg, int mode, cred_t *credp,
int *rvalp)
{
int rc = 0;
int chip;
mc_snapshot_info_t mcs;
if (cmd != MC_IOC_SNAPSHOT_INFO && cmd != MC_IOC_SNAPSHOT)
return (EINVAL);
rw_enter(&inhm_mc_lock, RW_READER);
chip = getminor(dev) % MAX_CPU_NODES;
if (inhm_mc_nvl[chip] == NULL ||
inhm_mc_snapshotgen != nhm_config_gen) {
if (!rw_tryupgrade(&inhm_mc_lock)) {
rw_exit(&inhm_mc_lock);
return (EAGAIN);
}
if (inhm_mc_nvl[chip])
inhm_mc_snapshot_destroy();
inhm_create_nvl(chip);
nhm_config_gen = inhm_mc_snapshotgen;
(void) inhm_mc_snapshot_update();
}
switch (cmd) {
case MC_IOC_SNAPSHOT_INFO:
mcs.mcs_size = (uint32_t)inhm_mc_snapshotsz[chip];
mcs.mcs_gen = inhm_mc_snapshotgen;
if (ddi_copyout(&mcs, (void *)arg, sizeof (mc_snapshot_info_t),
mode) < 0)
rc = EFAULT;
break;
case MC_IOC_SNAPSHOT:
if (ddi_copyout(inhm_mc_snapshot[chip], (void *)arg,
inhm_mc_snapshotsz[chip], mode) < 0)
rc = EFAULT;
break;
}
rw_exit(&inhm_mc_lock);
return (rc);
}
/*ARGSUSED*/
static int
inhm_mc_getinfo(dev_info_t *dip, ddi_info_cmd_t infocmd, void *arg,
void **result)
{
if ((infocmd != DDI_INFO_DEVT2DEVINFO &&
infocmd != DDI_INFO_DEVT2INSTANCE) || inhm_dip == NULL) {
*result = NULL;
return (DDI_FAILURE);
}
if (infocmd == DDI_INFO_DEVT2DEVINFO)
*result = inhm_dip;
else
*result = (void *)(uintptr_t)ddi_get_instance(inhm_dip);
return (0);
}
static int
inhm_mc_attach(dev_info_t *dip, ddi_attach_cmd_t cmd)
{
int i;
char buf[64];
if (cmd == DDI_RESUME) {
nhm_dev_reinit();
nhm_scrubber_enable();
nhm_smbios();
return (DDI_SUCCESS);
}
if (cmd != DDI_ATTACH)
return (DDI_FAILURE);
if (inhm_dip == NULL) {
inhm_dip = dip;
nhm_pci_cfg_setup(dip);
(void) ddi_prop_update_string(DDI_DEV_T_NONE, dip, "model",
inhm_mc_name());
if (nhm_dev_init()) {
nhm_pci_cfg_free();
inhm_dip = NULL;
return (DDI_FAILURE);
}
ddi_set_name_addr(dip, "1");
for (i = 0; i < MAX_CPU_NODES; i++) {
(void) snprintf(buf, sizeof (buf), "mc-intel-%d", i);
if (ddi_create_minor_node(dip, buf, S_IFCHR,
i, "ddi_mem_ctrl", 0) != DDI_SUCCESS) {
cmn_err(CE_WARN, "failed to create minor node"
" for memory controller %d\n", i);
}
}
cmi_hdl_walk(inhm_mc_register, NULL, NULL, NULL);
nhm_patrol_scrub = ddi_prop_get_int(DDI_DEV_T_ANY, dip,
DDI_PROP_DONTPASS, "patrol-scrub", 0);
nhm_demand_scrub = ddi_prop_get_int(DDI_DEV_T_ANY, dip,
DDI_PROP_DONTPASS, "demand-scrub", 0);
nhm_no_smbios = ddi_prop_get_int(DDI_DEV_T_ANY, dip,
DDI_PROP_DONTPASS, "no-smbios", 0);
nhm_smbios_serial = ddi_prop_get_int(DDI_DEV_T_ANY, dip,
DDI_PROP_DONTPASS, "smbios-dimm-serial", 1);
nhm_smbios_manufacturer = ddi_prop_get_int(DDI_DEV_T_ANY, dip,
DDI_PROP_DONTPASS, "smbios-dimm-manufacturer", 1);
nhm_smbios_part_number = ddi_prop_get_int(DDI_DEV_T_ANY, dip,
DDI_PROP_DONTPASS, "smbios-dimm-part-number", 1);
nhm_smbios_version = ddi_prop_get_int(DDI_DEV_T_ANY, dip,
DDI_PROP_DONTPASS, "smbios-dimme-version", 1);
nhm_smbios_label = ddi_prop_get_int(DDI_DEV_T_ANY, dip,
DDI_PROP_DONTPASS, "smbios-dimm-label", 1);
nhm_scrubber_enable();
nhm_smbios();
}
return (DDI_SUCCESS);
}
/*ARGSUSED*/
static int
inhm_mc_detach(dev_info_t *dip, ddi_detach_cmd_t cmd)
{
if (nhm_allow_detach && cmd == DDI_DETACH && dip == inhm_dip) {
rw_enter(&inhm_mc_lock, RW_WRITER);
inhm_mc_snapshot_destroy();
rw_exit(&inhm_mc_lock);
inhm_dip = NULL;
return (DDI_SUCCESS);
} else if (cmd == DDI_SUSPEND || cmd == DDI_PM_SUSPEND) {
return (DDI_SUCCESS);
} else {
return (DDI_FAILURE);
}
}
/*ARGSUSED*/
static int
inhm_mc_open(dev_t *devp, int flag, int otyp, cred_t *credp)
{
if (otyp != OTYP_CHR)
return (EINVAL);
rw_enter(&inhm_mc_lock, RW_READER);
if (getminor(*devp) >= MAX_CPU_NODES) {
rw_exit(&inhm_mc_lock);
return (EINVAL);
}
rw_exit(&inhm_mc_lock);
return (0);
}
/*ARGSUSED*/
static int
inhm_mc_close(dev_t dev, int flag, int otyp, cred_t *credp)
{
return (0);
}
static struct cb_ops inhm_mc_cb_ops = {
inhm_mc_open,
inhm_mc_close,
nodev, /* not a block driver */
nodev, /* no print routine */
nodev, /* no dump routine */
nodev, /* no read routine */
nodev, /* no write routine */
inhm_mc_ioctl,
nodev, /* no devmap routine */
nodev, /* no mmap routine */
nodev, /* no segmap routine */
nochpoll, /* no chpoll routine */
ddi_prop_op,
0, /* not a STREAMS driver */
D_NEW | D_MP, /* safe for multi-thread/multi-processor */
};
static struct dev_ops inhm_mc_ops = {
DEVO_REV, /* devo_rev */
0, /* devo_refcnt */
inhm_mc_getinfo, /* devo_getinfo */
nulldev, /* devo_identify */
nulldev, /* devo_probe */
inhm_mc_attach, /* devo_attach */
inhm_mc_detach, /* devo_detach */
nodev, /* devo_reset */
&inhm_mc_cb_ops, /* devo_cb_ops */
NULL, /* devo_bus_ops */
NULL, /* devo_power */
ddi_quiesce_not_needed, /* devo_quiesce */
};
static struct modldrv modldrv = {
&mod_driverops,
"Intel QuickPath Memory Controller Hub Module",
&inhm_mc_ops
};
static struct modlinkage modlinkage = {
MODREV_1,
(void *)&modldrv,
NULL
};
int
_init(void)
{
int err;
err = nhm_init();
if (err == 0 && (err = mod_install(&modlinkage)) == 0) {
rw_init(&inhm_mc_lock, NULL, RW_DRIVER, NULL);
init_dimms();
}
return (err);
}
int
_info(struct modinfo *modinfop)
{
return (mod_info(&modlinkage, modinfop));
}
int
_fini(void)
{
int err;
if ((err = mod_remove(&modlinkage)) == 0) {
nhm_unload();
rw_destroy(&inhm_mc_lock);
}
return (err);
}