/*
* 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 (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
* Copyright 2012 Garrett D'Amore <garrett@damore.org>. All rights reserved.
*/
#pragma ident "@(#)iommulib.c 1.6 08/09/07 SMI"
#include <sys/sunddi.h>
#include <sys/sunndi.h>
#include <sys/errno.h>
#include <sys/modctl.h>
#include <sys/iommulib.h>
/* ******** Type definitions private to this file ********************** */
/* 1 per IOMMU unit. There may be more than one per dip */
typedef struct iommulib_unit {
kmutex_t ilu_lock;
uint64_t ilu_ref;
uint32_t ilu_unitid;
dev_info_t *ilu_dip;
iommulib_ops_t *ilu_ops;
void* ilu_data;
struct iommulib_unit *ilu_next;
struct iommulib_unit *ilu_prev;
iommulib_nexhandle_t ilu_nex;
} iommulib_unit_t;
typedef struct iommulib_nex {
dev_info_t *nex_dip;
iommulib_nexops_t nex_ops;
struct iommulib_nex *nex_next;
struct iommulib_nex *nex_prev;
uint_t nex_ref;
} iommulib_nex_t;
/* ********* Globals ************************ */
/* For IOMMU drivers */
smbios_hdl_t *iommulib_smbios;
/* IOMMU side: Following data protected by lock */
static kmutex_t iommulib_lock;
static iommulib_unit_t *iommulib_list;
static uint64_t iommulib_unit_ids = 0;
static uint64_t iommulib_num_units = 0;
/* rootnex side data */
static kmutex_t iommulib_nexus_lock;
static iommulib_nex_t *iommulib_nexus_list;
/* can be set atomically without lock */
static volatile uint32_t iommulib_fini;
/* debug flag */
static int iommulib_debug;
/*
* Module linkage information for the kernel.
*/
static struct modlmisc modlmisc = {
&mod_miscops, "IOMMU library module"
};
static struct modlinkage modlinkage = {
MODREV_1, (void *)&modlmisc, NULL
};
int
_init(void)
{
return (mod_install(&modlinkage));
}
int
_fini(void)
{
mutex_enter(&iommulib_lock);
if (iommulib_list != NULL || iommulib_nexus_list != NULL) {
mutex_exit(&iommulib_lock);
return (EBUSY);
}
iommulib_fini = 1;
mutex_exit(&iommulib_lock);
return (mod_remove(&modlinkage));
}
int
_info(struct modinfo *modinfop)
{
return (mod_info(&modlinkage, modinfop));
}
/*
* Routines with iommulib_iommu_* are invoked from the
* IOMMU driver.
* Routines with iommulib_nex* are invoked from the
* nexus driver (typically rootnex)
*/
int
iommulib_nexus_register(dev_info_t *dip, iommulib_nexops_t *nexops,
iommulib_nexhandle_t *handle)
{
iommulib_nex_t *nexp;
int instance = ddi_get_instance(dip);
const char *driver = ddi_driver_name(dip);
dev_info_t *pdip = ddi_get_parent(dip);
const char *f = "iommulib_nexus_register";
ASSERT(nexops);
ASSERT(handle);
*handle = NULL;
/*
* Root node is never busy held
*/
if (dip != ddi_root_node() && (i_ddi_node_state(dip) < DS_PROBED ||
!DEVI_BUSY_OWNED(pdip))) {
cmn_err(CE_WARN, "%s: NEXUS devinfo node not in DS_PROBED "
"or busy held for nexops vector (%p). Failing registration",
f, (void *)nexops);
return (DDI_FAILURE);
}
if (nexops->nops_vers != IOMMU_NEXOPS_VERSION) {
cmn_err(CE_WARN, "%s: %s%d: Invalid IOMMULIB nexops version "
"in nexops vector (%p). Failing NEXUS registration",
f, driver, instance, (void *)nexops);
return (DDI_FAILURE);
}
ASSERT(nexops->nops_data == NULL);
if (nexops->nops_id == NULL) {
cmn_err(CE_WARN, "%s: %s%d: NULL ID field. "
"Failing registration for nexops vector: %p",
f, driver, instance, (void *)nexops);
return (DDI_FAILURE);
}
if (nexops->nops_dma_allochdl == NULL) {
cmn_err(CE_WARN, "%s: %s%d: NULL nops_dma_allochdl op. "
"Failing registration for ops vector: %p", f,
driver, instance, (void *)nexops);
return (DDI_FAILURE);
}
if (nexops->nops_dma_freehdl == NULL) {
cmn_err(CE_WARN, "%s: %s%d: NULL nops_dma_freehdl op. "
"Failing registration for ops vector: %p", f,
driver, instance, (void *)nexops);
return (DDI_FAILURE);
}
if (nexops->nops_dma_bindhdl == NULL) {
cmn_err(CE_WARN, "%s: %s%d: NULL nops_dma_bindhdl op. "
"Failing registration for ops vector: %p", f,
driver, instance, (void *)nexops);
return (DDI_FAILURE);
}
if (nexops->nops_dma_sync == NULL) {
cmn_err(CE_WARN, "%s: %s%d: NULL nops_dma_sync op. "
"Failing registration for ops vector: %p", f,
driver, instance, (void *)nexops);
return (DDI_FAILURE);
}
if (nexops->nops_dma_reset_cookies == NULL) {
cmn_err(CE_WARN, "%s: %s%d: NULL nops_dma_reset_cookies op. "
"Failing registration for ops vector: %p", f,
driver, instance, (void *)nexops);
return (DDI_FAILURE);
}
if (nexops->nops_dma_get_cookies == NULL) {
cmn_err(CE_WARN, "%s: %s%d: NULL nops_dma_get_cookies op. "
"Failing registration for ops vector: %p", f,
driver, instance, (void *)nexops);
return (DDI_FAILURE);
}
if (nexops->nops_dma_set_cookies == NULL) {
cmn_err(CE_WARN, "%s: %s%d: NULL nops_dma_set_cookies op. "
"Failing registration for ops vector: %p", f,
driver, instance, (void *)nexops);
return (DDI_FAILURE);
}
if (nexops->nops_dma_clear_cookies == NULL) {
cmn_err(CE_WARN, "%s: %s%d: NULL nops_dma_clear_cookies op. "
"Failing registration for ops vector: %p", f,
driver, instance, (void *)nexops);
return (DDI_FAILURE);
}
if (nexops->nops_dma_get_sleep_flags == NULL) {
cmn_err(CE_WARN, "%s: %s%d: NULL nops_dma_get_sleep_flags op. "
"Failing registration for ops vector: %p", f,
driver, instance, (void *)nexops);
return (DDI_FAILURE);
}
if (nexops->nops_dma_win == NULL) {
cmn_err(CE_WARN, "%s: %s%d: NULL nops_dma_win op. "
"Failing registration for ops vector: %p", f,
driver, instance, (void *)nexops);
return (DDI_FAILURE);
}
if (nexops->nops_dmahdl_setprivate == NULL) {
cmn_err(CE_WARN, "%s: %s%d: NULL nops_dmahdl_setprivate op. "
"Failing registration for ops vector: %p", f,
driver, instance, (void *)nexops);
return (DDI_FAILURE);
}
if (nexops->nops_dmahdl_getprivate == NULL) {
cmn_err(CE_WARN, "%s: %s%d: NULL nops_dmahdl_getprivate op. "
"Failing registration for ops vector: %p", f,
driver, instance, (void *)nexops);
return (DDI_FAILURE);
}
nexp = kmem_zalloc(sizeof (iommulib_nex_t), KM_SLEEP);
mutex_enter(&iommulib_lock);
if (iommulib_fini == 1) {
mutex_exit(&iommulib_lock);
cmn_err(CE_WARN, "%s: IOMMULIB unloading. "
"Failing NEXUS register.", f);
kmem_free(nexp, sizeof (iommulib_nex_t));
return (DDI_FAILURE);
}
/*
* fini/register race conditions have been handled. Now create the
* nexus struct
*/
ndi_hold_devi(dip);
nexp->nex_dip = dip;
nexp->nex_ops = *nexops;
mutex_enter(&iommulib_nexus_lock);
nexp->nex_next = iommulib_nexus_list;
iommulib_nexus_list = nexp;
nexp->nex_prev = NULL;
if (nexp->nex_next != NULL)
nexp->nex_next->nex_prev = nexp;
nexp->nex_ref = 0;
/*
* The nexus device won't be controlled by an IOMMU.
*/
DEVI(dip)->devi_iommulib_handle = IOMMU_HANDLE_UNUSED;
DEVI(dip)->devi_iommulib_nex_handle = nexp;
mutex_exit(&iommulib_nexus_lock);
mutex_exit(&iommulib_lock);
cmn_err(CE_NOTE, "!%s: %s%d: Succesfully registered NEXUS %s "
"nexops=%p", f, driver, instance, ddi_node_name(dip),
(void *)nexops);
*handle = nexp;
return (DDI_SUCCESS);
}
int
iommulib_nexus_unregister(iommulib_nexhandle_t handle)
{
dev_info_t *dip;
int instance;
const char *driver;
iommulib_nex_t *nexp = (iommulib_nex_t *)handle;
const char *f = "iommulib_nexus_unregister";
ASSERT(nexp);
if (nexp->nex_ref != 0)
return (DDI_FAILURE);
mutex_enter(&iommulib_nexus_lock);
dip = nexp->nex_dip;
driver = ddi_driver_name(dip);
instance = ddi_get_instance(dip);
/* A future enhancement would be to add ref-counts */
if (nexp->nex_prev == NULL) {
iommulib_nexus_list = nexp->nex_next;
} else {
nexp->nex_prev->nex_next = nexp->nex_next;
}
if (nexp->nex_next != NULL)
nexp->nex_next->nex_prev = nexp->nex_prev;
mutex_exit(&iommulib_nexus_lock);
kmem_free(nexp, sizeof (iommulib_nex_t));
cmn_err(CE_NOTE, "!%s: %s%d: NEXUS (%s) handle successfully "
"unregistered from IOMMULIB", f, driver, instance,
ddi_node_name(dip));
ndi_rele_devi(dip);
return (DDI_SUCCESS);
}
int
iommulib_iommu_register(dev_info_t *dip, iommulib_ops_t *ops,
iommulib_handle_t *handle)
{
const char *vendor;
iommulib_unit_t *unitp;
int instance = ddi_get_instance(dip);
const char *driver = ddi_driver_name(dip);
const char *f = "iommulib_register";
ASSERT(ops);
ASSERT(handle);
if (ops->ilops_vers != IOMMU_OPS_VERSION) {
cmn_err(CE_WARN, "%s: %s%d: Invalid IOMMULIB ops version "
"in ops vector (%p). Failing registration", f, driver,
instance, (void *)ops);
return (DDI_FAILURE);
}
switch (ops->ilops_vendor) {
case AMD_IOMMU:
vendor = "AMD";
break;
case INTEL_IOMMU:
vendor = "Intel";
break;
case INVALID_VENDOR:
cmn_err(CE_WARN, "%s: %s%d: vendor field (%x) not initialized. "
"Failing registration for ops vector: %p", f,
driver, instance, ops->ilops_vendor, (void *)ops);
return (DDI_FAILURE);
default:
cmn_err(CE_WARN, "%s: %s%d: Invalid vendor field (%x). "
"Failing registration for ops vector: %p", f,
driver, instance, ops->ilops_vendor, (void *)ops);
return (DDI_FAILURE);
}
cmn_err(CE_NOTE, "!%s: %s%d: Detected IOMMU registration from vendor"
" %s", f, driver, instance, vendor);
if (ops->ilops_data == NULL) {
cmn_err(CE_WARN, "%s: %s%d: NULL IOMMU data field. "
"Failing registration for ops vector: %p", f,
driver, instance, (void *)ops);
return (DDI_FAILURE);
}
if (ops->ilops_id == NULL) {
cmn_err(CE_WARN, "%s: %s%d: NULL ID field. "
"Failing registration for ops vector: %p", f,
driver, instance, (void *)ops);
return (DDI_FAILURE);
}
if (ops->ilops_probe == NULL) {
cmn_err(CE_WARN, "%s: %s%d: NULL probe op. "
"Failing registration for ops vector: %p", f,
driver, instance, (void *)ops);
return (DDI_FAILURE);
}
if (ops->ilops_dma_allochdl == NULL) {
cmn_err(CE_WARN, "%s: %s%d: NULL dma_allochdl op. "
"Failing registration for ops vector: %p", f,
driver, instance, (void *)ops);
return (DDI_FAILURE);
}
if (ops->ilops_dma_freehdl == NULL) {
cmn_err(CE_WARN, "%s: %s%d: NULL dma_freehdl op. "
"Failing registration for ops vector: %p", f,
driver, instance, (void *)ops);
return (DDI_FAILURE);
}
if (ops->ilops_dma_bindhdl == NULL) {
cmn_err(CE_WARN, "%s: %s%d: NULL dma_bindhdl op. "
"Failing registration for ops vector: %p", f,
driver, instance, (void *)ops);
return (DDI_FAILURE);
}
if (ops->ilops_dma_sync == NULL) {
cmn_err(CE_WARN, "%s: %s%d: NULL dma_sync op. "
"Failing registration for ops vector: %p", f,
driver, instance, (void *)ops);
return (DDI_FAILURE);
}
if (ops->ilops_dma_win == NULL) {
cmn_err(CE_WARN, "%s: %s%d: NULL dma_win op. "
"Failing registration for ops vector: %p", f,
driver, instance, (void *)ops);
return (DDI_FAILURE);
}
unitp = kmem_zalloc(sizeof (iommulib_unit_t), KM_SLEEP);
mutex_enter(&iommulib_lock);
if (iommulib_fini == 1) {
mutex_exit(&iommulib_lock);
cmn_err(CE_WARN, "%s: IOMMULIB unloading. Failing register.",
f);
kmem_free(unitp, sizeof (iommulib_unit_t));
return (DDI_FAILURE);
}
/*
* fini/register race conditions have been handled. Now create the
* IOMMU unit
*/
mutex_init(&unitp->ilu_lock, NULL, MUTEX_DEFAULT, NULL);
mutex_enter(&unitp->ilu_lock);
unitp->ilu_unitid = ++iommulib_unit_ids;
unitp->ilu_ref = 0;
ndi_hold_devi(dip);
unitp->ilu_dip = dip;
unitp->ilu_ops = ops;
unitp->ilu_data = ops->ilops_data;
unitp->ilu_next = iommulib_list;
iommulib_list = unitp;
unitp->ilu_prev = NULL;
if (unitp->ilu_next)
unitp->ilu_next->ilu_prev = unitp;
/*
* The IOMMU device itself is not controlled by an IOMMU.
*/
DEVI(dip)->devi_iommulib_handle = IOMMU_HANDLE_UNUSED;
mutex_exit(&unitp->ilu_lock);
iommulib_num_units++;
*handle = unitp;
mutex_exit(&iommulib_lock);
cmn_err(CE_NOTE, "!%s: %s%d: Succesfully registered IOMMU unit "
"from vendor=%s, ops=%p, data=%p, IOMMULIB unitid=%u",
f, driver, instance, vendor, (void *)ops, (void *)unitp->ilu_data,
unitp->ilu_unitid);
return (DDI_SUCCESS);
}
int
iommulib_iommu_unregister(iommulib_handle_t handle)
{
uint32_t unitid;
dev_info_t *dip;
int instance;
const char *driver;
iommulib_unit_t *unitp = (iommulib_unit_t *)handle;
const char *f = "iommulib_unregister";
ASSERT(unitp);
mutex_enter(&iommulib_lock);
mutex_enter(&unitp->ilu_lock);
unitid = unitp->ilu_unitid;
dip = unitp->ilu_dip;
driver = ddi_driver_name(dip);
instance = ddi_get_instance(dip);
if (unitp->ilu_ref != 0) {
mutex_exit(&unitp->ilu_lock);
mutex_exit(&iommulib_lock);
cmn_err(CE_WARN, "%s: %s%d: IOMMULIB handle is busy. Cannot "
"unregister IOMMULIB unitid %u",
f, driver, instance, unitid);
return (DDI_FAILURE);
}
unitp->ilu_unitid = 0;
ASSERT(unitp->ilu_ref == 0);
if (unitp->ilu_prev == NULL) {
iommulib_list = unitp->ilu_next;
unitp->ilu_next->ilu_prev = NULL;
} else {
unitp->ilu_prev->ilu_next = unitp->ilu_next;
unitp->ilu_next->ilu_prev = unitp->ilu_prev;
}
iommulib_num_units--;
mutex_exit(&unitp->ilu_lock);
mutex_destroy(&unitp->ilu_lock);
kmem_free(unitp, sizeof (iommulib_unit_t));
mutex_exit(&iommulib_lock);
cmn_err(CE_WARN, "%s: %s%d: IOMMULIB handle (unitid=%u) successfully "
"unregistered", f, driver, instance, unitid);
ndi_rele_devi(dip);
return (DDI_SUCCESS);
}
int
iommulib_nex_open(dev_info_t *dip, dev_info_t *rdip)
{
iommulib_unit_t *unitp;
int instance = ddi_get_instance(rdip);
const char *driver = ddi_driver_name(rdip);
const char *f = "iommulib_nex_open";
ASSERT(DEVI(dip)->devi_iommulib_nex_handle != NULL);
ASSERT(DEVI(rdip)->devi_iommulib_handle == NULL);
/* prevent use of IOMMU for AMD IOMMU's DMA */
if (strcmp(driver, "amd_iommu") == 0) {
DEVI(rdip)->devi_iommulib_handle = IOMMU_HANDLE_UNUSED;
return (DDI_ENOTSUP);
}
/*
* Use the probe entry point to determine in a hardware specific
* manner whether this dip is controlled by an IOMMU. If yes,
* return the handle corresponding to the IOMMU unit.
*/
mutex_enter(&iommulib_lock);
for (unitp = iommulib_list; unitp; unitp = unitp->ilu_next) {
if (unitp->ilu_ops->ilops_probe(unitp, rdip) == DDI_SUCCESS)
break;
}
if (unitp == NULL) {
mutex_exit(&iommulib_lock);
if (iommulib_debug) {
char *buf = kmem_alloc(MAXPATHLEN, KM_SLEEP);
cmn_err(CE_WARN, "%s: %s%d: devinfo node (%p): is not "
"controlled by an IOMMU: path=%s", f, driver,
instance, (void *)rdip, ddi_pathname(rdip, buf));
kmem_free(buf, MAXPATHLEN);
}
DEVI(rdip)->devi_iommulib_handle = IOMMU_HANDLE_UNUSED;
return (DDI_ENOTSUP);
}
mutex_enter(&unitp->ilu_lock);
unitp->ilu_nex = DEVI(dip)->devi_iommulib_nex_handle;
unitp->ilu_ref++;
DEVI(rdip)->devi_iommulib_handle = unitp;
mutex_exit(&unitp->ilu_lock);
mutex_exit(&iommulib_lock);
atomic_inc_uint(&DEVI(dip)->devi_iommulib_nex_handle->nex_ref);
return (DDI_SUCCESS);
}
void
iommulib_nex_close(dev_info_t *rdip)
{
iommulib_unit_t *unitp;
const char *driver;
int instance;
uint32_t unitid;
iommulib_nex_t *nexp;
const char *f = "iommulib_nex_close";
ASSERT(IOMMU_USED(rdip));
unitp = DEVI(rdip)->devi_iommulib_handle;
mutex_enter(&iommulib_lock);
mutex_enter(&unitp->ilu_lock);
nexp = (iommulib_nex_t *)unitp->ilu_nex;
DEVI(rdip)->devi_iommulib_handle = NULL;
unitid = unitp->ilu_unitid;
driver = ddi_driver_name(unitp->ilu_dip);
instance = ddi_get_instance(unitp->ilu_dip);
unitp->ilu_ref--;
mutex_exit(&unitp->ilu_lock);
mutex_exit(&iommulib_lock);
atomic_dec_uint(&nexp->nex_ref);
if (iommulib_debug) {
char *buf = kmem_alloc(MAXPATHLEN, KM_SLEEP);
(void) ddi_pathname(rdip, buf);
cmn_err(CE_NOTE, "%s: %s%d: closing IOMMU for dip (%p), "
"unitid=%u rdip path = %s", f, driver, instance,
(void *)rdip, unitid, buf);
kmem_free(buf, MAXPATHLEN);
}
}
int
iommulib_nexdma_allochdl(dev_info_t *dip, dev_info_t *rdip,
ddi_dma_attr_t *attr, int (*waitfp)(caddr_t),
caddr_t arg, ddi_dma_handle_t *dma_handlep)
{
iommulib_handle_t handle = DEVI(rdip)->devi_iommulib_handle;
iommulib_unit_t *unitp = (iommulib_unit_t *)handle;
ASSERT(unitp);
/* No need to grab lock - the handle is reference counted */
return (unitp->ilu_ops->ilops_dma_allochdl(handle, dip, rdip,
attr, waitfp, arg, dma_handlep));
}
int
iommulib_nexdma_freehdl(dev_info_t *dip, dev_info_t *rdip,
ddi_dma_handle_t dma_handle)
{
int error;
iommulib_handle_t handle = DEVI(rdip)->devi_iommulib_handle;
iommulib_unit_t *unitp = (iommulib_unit_t *)handle;
ASSERT(unitp);
/* No need to grab lock - the handle is reference counted */
error = unitp->ilu_ops->ilops_dma_freehdl(handle, dip,
rdip, dma_handle);
return (error);
}
int
iommulib_nexdma_bindhdl(dev_info_t *dip, dev_info_t *rdip,
ddi_dma_handle_t dma_handle, struct ddi_dma_req *dmareq,
ddi_dma_cookie_t *cookiep, uint_t *ccountp)
{
iommulib_handle_t handle = DEVI(rdip)->devi_iommulib_handle;
iommulib_unit_t *unitp = (iommulib_unit_t *)handle;
ASSERT(unitp);
/* No need to grab lock - the handle is reference counted */
return (unitp->ilu_ops->ilops_dma_bindhdl(handle, dip, rdip, dma_handle,
dmareq, cookiep, ccountp));
}
int
iommulib_nexdma_unbindhdl(dev_info_t *dip, dev_info_t *rdip,
ddi_dma_handle_t dma_handle)
{
iommulib_handle_t handle = DEVI(rdip)->devi_iommulib_handle;
iommulib_unit_t *unitp = (iommulib_unit_t *)handle;
ASSERT(unitp);
/* No need to grab lock - the handle is reference counted */
return (unitp->ilu_ops->ilops_dma_unbindhdl(handle, dip, rdip,
dma_handle));
}
int
iommulib_nexdma_sync(dev_info_t *dip, dev_info_t *rdip,
ddi_dma_handle_t dma_handle, off_t off, size_t len,
uint_t cache_flags)
{
iommulib_handle_t handle = DEVI(rdip)->devi_iommulib_handle;
iommulib_unit_t *unitp = (iommulib_unit_t *)handle;
ASSERT(unitp);
/* No need to grab lock - the handle is reference counted */
return (unitp->ilu_ops->ilops_dma_sync(handle, dip, rdip, dma_handle,
off, len, cache_flags));
}
int
iommulib_nexdma_win(dev_info_t *dip, dev_info_t *rdip,
ddi_dma_handle_t dma_handle, uint_t win, off_t *offp, size_t *lenp,
ddi_dma_cookie_t *cookiep, uint_t *ccountp)
{
iommulib_handle_t handle = DEVI(rdip)->devi_iommulib_handle;
iommulib_unit_t *unitp = (iommulib_unit_t *)handle;
ASSERT(unitp);
/* No need to grab lock - the handle is reference counted */
return (unitp->ilu_ops->ilops_dma_win(handle, dip, rdip, dma_handle,
win, offp, lenp, cookiep, ccountp));
}
int
iommulib_nexdma_mapobject(dev_info_t *dip, dev_info_t *rdip,
ddi_dma_handle_t dma_handle, struct ddi_dma_req *dmareq,
ddi_dma_obj_t *dmao)
{
iommulib_handle_t handle = DEVI(rdip)->devi_iommulib_handle;
iommulib_unit_t *unitp = (iommulib_unit_t *)handle;
return (unitp->ilu_ops->ilops_dma_mapobject(handle, dip, rdip,
dma_handle, dmareq, dmao));
}
int
iommulib_nexdma_unmapobject(dev_info_t *dip, dev_info_t *rdip,
ddi_dma_handle_t dma_handle, ddi_dma_obj_t *dmao)
{
iommulib_handle_t handle = DEVI(rdip)->devi_iommulib_handle;
iommulib_unit_t *unitp = (iommulib_unit_t *)handle;
return (unitp->ilu_ops->ilops_dma_unmapobject(handle, dip, rdip,
dma_handle, dmao));
}
/* Utility routines invoked by IOMMU drivers */
int
iommulib_iommu_dma_allochdl(dev_info_t *dip, dev_info_t *rdip,
ddi_dma_attr_t *attr, int (*waitfp)(caddr_t), caddr_t arg,
ddi_dma_handle_t *handlep)
{
iommulib_nexops_t *nexops;
nexops = &DEVI(dip)->devi_iommulib_nex_handle->nex_ops;
return (nexops->nops_dma_allochdl(dip, rdip, attr, waitfp, arg,
handlep));
}
int
iommulib_iommu_dma_freehdl(dev_info_t *dip, dev_info_t *rdip,
ddi_dma_handle_t handle)
{
iommulib_nexops_t *nexops;
nexops = &DEVI(dip)->devi_iommulib_nex_handle->nex_ops;
ASSERT(nexops);
return (nexops->nops_dma_freehdl(dip, rdip, handle));
}
int
iommulib_iommu_dma_bindhdl(dev_info_t *dip, dev_info_t *rdip,
ddi_dma_handle_t handle, struct ddi_dma_req *dmareq,
ddi_dma_cookie_t *cookiep, uint_t *ccountp)
{
iommulib_nexops_t *nexops;
nexops = &DEVI(dip)->devi_iommulib_nex_handle->nex_ops;
return (nexops->nops_dma_bindhdl(dip, rdip, handle, dmareq,
cookiep, ccountp));
}
int
iommulib_iommu_dma_unbindhdl(dev_info_t *dip, dev_info_t *rdip,
ddi_dma_handle_t handle)
{
iommulib_nexops_t *nexops;
nexops = &DEVI(dip)->devi_iommulib_nex_handle->nex_ops;
return (nexops->nops_dma_unbindhdl(dip, rdip, handle));
}
void
iommulib_iommu_dma_reset_cookies(dev_info_t *dip, ddi_dma_handle_t handle)
{
iommulib_nexops_t *nexops;
nexops = &DEVI(dip)->devi_iommulib_nex_handle->nex_ops;
nexops->nops_dma_reset_cookies(dip, handle);
}
int
iommulib_iommu_dma_get_cookies(dev_info_t *dip, ddi_dma_handle_t handle,
ddi_dma_cookie_t **cookiepp, uint_t *ccountp)
{
iommulib_nexops_t *nexops;
nexops = &DEVI(dip)->devi_iommulib_nex_handle->nex_ops;
return (nexops->nops_dma_get_cookies(dip, handle, cookiepp, ccountp));
}
int
iommulib_iommu_dma_set_cookies(dev_info_t *dip, ddi_dma_handle_t handle,
ddi_dma_cookie_t *cookiep, uint_t ccount)
{
iommulib_nexops_t *nexops;
nexops = &DEVI(dip)->devi_iommulib_nex_handle->nex_ops;
return (nexops->nops_dma_set_cookies(dip, handle, cookiep, ccount));
}
int
iommulib_iommu_dma_clear_cookies(dev_info_t *dip, ddi_dma_handle_t handle)
{
iommulib_nexops_t *nexops;
nexops = &DEVI(dip)->devi_iommulib_nex_handle->nex_ops;
return (nexops->nops_dma_clear_cookies(dip, handle));
}
int
iommulib_iommu_dma_get_sleep_flags(dev_info_t *dip, ddi_dma_handle_t handle)
{
iommulib_nexops_t *nexops;
nexops = &DEVI(dip)->devi_iommulib_nex_handle->nex_ops;
return (nexops->nops_dma_get_sleep_flags(handle));
}
int
iommulib_iommu_dma_sync(dev_info_t *dip, dev_info_t *rdip,
ddi_dma_handle_t handle, off_t off, size_t len, uint_t cache_flags)
{
iommulib_nexops_t *nexops;
nexops = &DEVI(dip)->devi_iommulib_nex_handle->nex_ops;
return (nexops->nops_dma_sync(dip, rdip, handle, off, len,
cache_flags));
}
int
iommulib_iommu_dma_win(dev_info_t *dip, dev_info_t *rdip,
ddi_dma_handle_t handle, uint_t win, off_t *offp, size_t *lenp,
ddi_dma_cookie_t *cookiep, uint_t *ccountp)
{
iommulib_nexops_t *nexops;
nexops = &DEVI(dip)->devi_iommulib_nex_handle->nex_ops;
return (nexops->nops_dma_win(dip, rdip, handle, win, offp, lenp,
cookiep, ccountp));
}
int
iommulib_iommu_dmahdl_setprivate(dev_info_t *dip, dev_info_t *rdip,
ddi_dma_handle_t handle, void *priv)
{
iommulib_nexops_t *nexops;
nexops = &DEVI(dip)->devi_iommulib_nex_handle->nex_ops;
return (nexops->nops_dmahdl_setprivate(dip, rdip, handle, priv));
}
void *
iommulib_iommu_dmahdl_getprivate(dev_info_t *dip, dev_info_t *rdip,
ddi_dma_handle_t handle)
{
iommulib_nexops_t *nexops;
nexops = &DEVI(dip)->devi_iommulib_nex_handle->nex_ops;
return (nexops->nops_dmahdl_getprivate(dip, rdip, handle));
}
int
iommulib_iommu_getunitid(iommulib_handle_t handle, uint64_t *unitidp)
{
iommulib_unit_t *unitp;
uint64_t unitid;
unitp = (iommulib_unit_t *)handle;
ASSERT(unitp);
ASSERT(unitidp);
mutex_enter(&unitp->ilu_lock);
unitid = unitp->ilu_unitid;
mutex_exit(&unitp->ilu_lock);
ASSERT(unitid > 0);
*unitidp = (uint64_t)unitid;
return (DDI_SUCCESS);
}
dev_info_t *
iommulib_iommu_getdip(iommulib_handle_t handle)
{
iommulib_unit_t *unitp;
dev_info_t *dip;
unitp = (iommulib_unit_t *)handle;
ASSERT(unitp);
mutex_enter(&unitp->ilu_lock);
dip = unitp->ilu_dip;
ASSERT(dip);
ndi_hold_devi(dip);
mutex_exit(&unitp->ilu_lock);
return (dip);
}
iommulib_ops_t *
iommulib_iommu_getops(iommulib_handle_t handle)
{
iommulib_unit_t *unitp;
iommulib_ops_t *ops;
unitp = (iommulib_unit_t *)handle;
ASSERT(unitp);
mutex_enter(&unitp->ilu_lock);
ops = unitp->ilu_ops;
mutex_exit(&unitp->ilu_lock);
ASSERT(ops);
return (ops);
}
void *
iommulib_iommu_getdata(iommulib_handle_t handle)
{
iommulib_unit_t *unitp;
void *data;
unitp = (iommulib_unit_t *)handle;
ASSERT(unitp);
mutex_enter(&unitp->ilu_lock);
data = unitp->ilu_data;
mutex_exit(&unitp->ilu_lock);
ASSERT(data);
return (data);
}