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/*
* 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.
*/
/*
* PCI nexus HotPlug devctl interface
*/
#include <sys/types.h>
#include <sys/conf.h>
#include <sys/kmem.h>
#include <sys/async.h>
#include <sys/sysmacros.h>
#include <sys/sunddi.h>
#include <sys/sunndi.h>
#include <sys/ddi_impldefs.h>
#include <sys/pci/pci_obj.h>
#include <sys/pci_tools.h>
#include <sys/pci/pci_tools_ext.h>
#include <sys/open.h>
#include <sys/errno.h>
#include <sys/file.h>
#include <sys/policy.h>
#include <sys/hotplug/pci/pcihp.h>
/*LINTLIBRARY*/
static int pci_open(dev_t *devp, int flags, int otyp, cred_t *credp);
static int pci_close(dev_t dev, int flags, int otyp, cred_t *credp);
static int pci_devctl_ioctl(dev_info_t *dip, int cmd, intptr_t arg, int mode,
cred_t *credp, int *rvalp);
static int pci_ioctl(dev_t dev, int cmd, intptr_t arg, int mode,
cred_t *credp, int *rvalp);
static int pci_prop_op(dev_t dev, dev_info_t *dip, ddi_prop_op_t prop_op,
int flags, char *name, caddr_t valuep, int *lengthp);
struct cb_ops pci_cb_ops = {
pci_open, /* open */
pci_close, /* close */
nodev, /* strategy */
nodev, /* print */
nodev, /* dump */
nodev, /* read */
nodev, /* write */
pci_ioctl, /* ioctl */
nodev, /* devmap */
nodev, /* mmap */
nodev, /* segmap */
nochpoll, /* poll */
pci_prop_op, /* cb_prop_op */
NULL, /* streamtab */
D_NEW | D_MP | D_HOTPLUG, /* Driver compatibility flag */
CB_REV, /* rev */
nodev, /* int (*cb_aread)() */
nodev /* int (*cb_awrite)() */
};
extern struct cb_ops *pcihp_ops;
/* ARGSUSED3 */
static int
pci_open(dev_t *devp, int flags, int otyp, cred_t *credp)
{
pci_t *pci_p;
int rval;
uint_t orig_pci_soft_state;
/*
* Make sure the open is for the right file type.
*/
if (otyp != OTYP_CHR)
return (EINVAL);
/*
* Get the soft state structure for the device.
*/
pci_p = DEV_TO_SOFTSTATE(*devp);
if (pci_p == NULL)
return (ENXIO);
/*
* Handle the open by tracking the device state.
*/
DEBUG2(DBG_OPEN, pci_p->pci_dip, "devp=%x: flags=%x\n", devp, flags);
mutex_enter(&pci_p->pci_mutex);
orig_pci_soft_state = pci_p->pci_soft_state;
if (flags & FEXCL) {
if (pci_p->pci_soft_state != PCI_SOFT_STATE_CLOSED) {
mutex_exit(&pci_p->pci_mutex);
DEBUG0(DBG_OPEN, pci_p->pci_dip, "busy\n");
return (EBUSY);
}
pci_p->pci_soft_state = PCI_SOFT_STATE_OPEN_EXCL;
} else {
if (pci_p->pci_soft_state == PCI_SOFT_STATE_OPEN_EXCL) {
mutex_exit(&pci_p->pci_mutex);
DEBUG0(DBG_OPEN, pci_p->pci_dip, "busy\n");
return (EBUSY);
}
pci_p->pci_soft_state = PCI_SOFT_STATE_OPEN;
}
if (pci_p->hotplug_capable == B_TRUE) {
if (rval = pcihp_ops->cb_open(devp, flags, otyp, credp)) {
pci_p->pci_soft_state = orig_pci_soft_state;
mutex_exit(&pci_p->pci_mutex);
return (rval);
}
}
mutex_exit(&pci_p->pci_mutex);
return (0);
}
/* ARGSUSED */
static int
pci_close(dev_t dev, int flags, int otyp, cred_t *credp)
{
pci_t *pci_p;
int rval;
if (otyp != OTYP_CHR)
return (EINVAL);
pci_p = DEV_TO_SOFTSTATE(dev);
if (pci_p == NULL)
return (ENXIO);
DEBUG2(DBG_CLOSE, pci_p->pci_dip, "dev=%x: flags=%x\n", dev, flags);
mutex_enter(&pci_p->pci_mutex);
if (pci_p->hotplug_capable == B_TRUE)
if (rval = pcihp_ops->cb_close(dev, flags, otyp, credp)) {
mutex_exit(&pci_p->pci_mutex);
return (rval);
}
pci_p->pci_soft_state = PCI_SOFT_STATE_CLOSED;
mutex_exit(&pci_p->pci_mutex);
return (0);
}
/* ARGSUSED */
static int
pci_devctl_ioctl(dev_info_t *dip, int cmd, intptr_t arg, int mode,
cred_t *credp, int *rvalp)
{
int rv = 0;
struct devctl_iocdata *dcp;
uint_t bus_state;
/*
* We can use the generic implementation for these ioctls
*/
switch (cmd) {
case DEVCTL_DEVICE_GETSTATE:
case DEVCTL_DEVICE_ONLINE:
case DEVCTL_DEVICE_OFFLINE:
case DEVCTL_BUS_GETSTATE:
return (ndi_devctl_ioctl(dip, cmd, arg, mode, 0));
}
/*
* read devctl ioctl data
*/
if (ndi_dc_allochdl((void *)arg, &dcp) != NDI_SUCCESS)
return (EFAULT);
switch (cmd) {
case DEVCTL_DEVICE_RESET:
DEBUG0(DBG_IOCTL, dip, "DEVCTL_DEVICE_RESET\n");
rv = ENOTSUP;
break;
case DEVCTL_BUS_QUIESCE:
DEBUG0(DBG_IOCTL, dip, "DEVCTL_BUS_QUIESCE\n");
if (ndi_get_bus_state(dip, &bus_state) == NDI_SUCCESS)
if (bus_state == BUS_QUIESCED)
break;
(void) ndi_set_bus_state(dip, BUS_QUIESCED);
break;
case DEVCTL_BUS_UNQUIESCE:
DEBUG0(DBG_IOCTL, dip, "DEVCTL_BUS_UNQUIESCE\n");
if (ndi_get_bus_state(dip, &bus_state) == NDI_SUCCESS)
if (bus_state == BUS_ACTIVE)
break;
(void) ndi_set_bus_state(dip, BUS_ACTIVE);
break;
case DEVCTL_BUS_RESET:
DEBUG0(DBG_IOCTL, dip, "DEVCTL_BUS_RESET\n");
rv = ENOTSUP;
break;
case DEVCTL_BUS_RESETALL:
DEBUG0(DBG_IOCTL, dip, "DEVCTL_BUS_RESETALL\n");
rv = ENOTSUP;
break;
default:
rv = ENOTTY;
}
ndi_dc_freehdl(dcp);
return (rv);
}
static int
pci_ioctl(dev_t dev, int cmd, intptr_t arg, int mode, cred_t *credp, int *rvalp)
{
pci_t *pci_p;
dev_info_t *dip;
minor_t minor = getminor(dev);
int rv = ENOTTY;
pci_p = DEV_TO_SOFTSTATE(dev);
if (pci_p == NULL)
return (ENXIO);
dip = pci_p->pci_dip;
DEBUG2(DBG_IOCTL, dip, "dev=%x: cmd=%x\n", dev, cmd);
#ifdef PCI_DMA_TEST
if (IS_DMATEST(cmd)) {
*rvalp = pci_dma_test(cmd, dip, pci_p, arg);
return (0);
}
#endif
switch (PCIHP_AP_MINOR_NUM_TO_PCI_DEVNUM(minor)) {
case PCI_TOOL_REG_MINOR_NUM:
switch (cmd) {
case PCITOOL_DEVICE_SET_REG:
case PCITOOL_DEVICE_GET_REG:
/* Require full privileges. */
if (secpolicy_kmdb(credp))
rv = EPERM;
else
rv = pcitool_dev_reg_ops(
dev, (void *)arg, cmd, mode);
break;
case PCITOOL_NEXUS_SET_REG:
case PCITOOL_NEXUS_GET_REG:
/* Require full privileges. */
if (secpolicy_kmdb(credp))
rv = EPERM;
else
rv = pcitool_bus_reg_ops(
dev, (void *)arg, cmd, mode);
break;
}
break;
case PCI_TOOL_INTR_MINOR_NUM:
switch (cmd) {
case PCITOOL_DEVICE_SET_INTR:
/* Require PRIV_SYS_RES_CONFIG, same as psradm */
if (secpolicy_ponline(credp)) {
rv = EPERM;
break;
}
/*FALLTHRU*/
/* These require no special privileges. */
case PCITOOL_DEVICE_GET_INTR:
case PCITOOL_SYSTEM_INTR_INFO:
rv = pcitool_intr_admn(dev, (void *)arg, cmd, mode);
break;
}
break;
/*
* All non-PCItool ioctls go through here, including:
* devctl ioctls with minor number PCIHP_DEVCTL_MINOR and
* those for attachment points with where minor number is the
* device number.
*/
default:
if (pci_p->hotplug_capable == B_TRUE)
rv = pcihp_ops->cb_ioctl(
dev, cmd, arg, mode, credp, rvalp);
else
rv = pci_devctl_ioctl(
dip, cmd, arg, mode, credp, rvalp);
break;
}
return (rv);
}
static int pci_prop_op(dev_t dev, dev_info_t *dip, ddi_prop_op_t prop_op,
int flags, char *name, caddr_t valuep, int *lengthp)
{
if (ddi_prop_exists(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS,
"hotplug-capable"))
return ((pcihp_get_cb_ops())->cb_prop_op(dev, dip,
prop_op, flags, name, valuep, lengthp));
return (ddi_prop_op(dev, dip, prop_op, flags, name, valuep, lengthp));
}
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