--- old/usr/src/uts/i86xpv/io/privcmd.c	Fri Aug 10 23:19:19 2018
+++ /dev/null	Fri Aug 10 23:19:19 2018
@@ -1,411 +0,0 @@
-/*
- * 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/xpv_user.h>
-
-#include <sys/types.h>
-#include <sys/file.h>
-#include <sys/errno.h>
-#include <sys/open.h>
-#include <sys/cred.h>
-#include <sys/conf.h>
-#include <sys/stat.h>
-#include <sys/modctl.h>
-#include <sys/ddi.h>
-#include <sys/sunddi.h>
-#include <sys/vmsystm.h>
-#include <sys/sdt.h>
-#include <sys/hypervisor.h>
-#include <sys/xen_errno.h>
-#include <sys/policy.h>
-
-#include <vm/hat_i86.h>
-#include <vm/hat_pte.h>
-#include <vm/seg_mf.h>
-
-#include <xen/sys/privcmd.h>
-#include <sys/privcmd_impl.h>
-
-static dev_info_t *privcmd_devi;
-
-/*ARGSUSED*/
-static int
-privcmd_getinfo(dev_info_t *devi, ddi_info_cmd_t cmd, void *arg, void **result)
-{
-	switch (cmd) {
-	case DDI_INFO_DEVT2DEVINFO:
-	case DDI_INFO_DEVT2INSTANCE:
-		break;
-	default:
-		return (DDI_FAILURE);
-	}
-
-	switch (getminor((dev_t)arg)) {
-	case PRIVCMD_MINOR:
-		break;
-	default:
-		return (DDI_FAILURE);
-	}
-
-	if (cmd == DDI_INFO_DEVT2INSTANCE)
-		*result = 0;
-	else
-		*result = privcmd_devi;
-	return (DDI_SUCCESS);
-}
-
-static int
-privcmd_attach(dev_info_t *devi, ddi_attach_cmd_t cmd)
-{
-	if (cmd != DDI_ATTACH)
-		return (DDI_FAILURE);
-
-	if (ddi_create_minor_node(devi, PRIVCMD_NODE,
-	    S_IFCHR, PRIVCMD_MINOR, DDI_PSEUDO, 0) != DDI_SUCCESS)
-		return (DDI_FAILURE);
-
-	privcmd_devi = devi;
-	ddi_report_dev(devi);
-	return (DDI_SUCCESS);
-}
-
-static int
-privcmd_detach(dev_info_t *devi, ddi_detach_cmd_t cmd)
-{
-	if (cmd != DDI_DETACH)
-		return (DDI_FAILURE);
-	ddi_remove_minor_node(devi, NULL);
-	privcmd_devi = NULL;
-	return (DDI_SUCCESS);
-}
-
-/*ARGSUSED1*/
-static int
-privcmd_open(dev_t *dev, int flag, int otyp, cred_t *cr)
-{
-	return (getminor(*dev) == PRIVCMD_MINOR ? 0 : ENXIO);
-}
-
-/*
- * Map a contiguous set of machine frames in a foreign domain.
- * Used in the following way:
- *
- *	privcmd_mmap_t p;
- *	privcmd_mmap_entry_t e;
- *
- *	addr = mmap(NULL, size, prot, MAP_SHARED, fd, 0);
- *	p.num = number of privcmd_mmap_entry_t's
- *	p.dom = domid;
- *	p.entry = &e;
- *	e.va = addr;
- *	e.mfn = mfn;
- *	e.npages = btopr(size);
- *	ioctl(fd, IOCTL_PRIVCMD_MMAP, &p);
- */
-/*ARGSUSED2*/
-int
-do_privcmd_mmap(void *uarg, int mode, cred_t *cr)
-{
-	privcmd_mmap_t __mmapcmd, *mmc = &__mmapcmd;
-	privcmd_mmap_entry_t *umme;
-	struct as *as = curproc->p_as;
-	struct seg *seg;
-	int i, error = 0;
-
-	if (ddi_copyin(uarg, mmc, sizeof (*mmc), mode))
-		return (EFAULT);
-
-	DTRACE_XPV3(mmap__start, domid_t, mmc->dom, int, mmc->num,
-	    privcmd_mmap_entry_t *, mmc->entry);
-
-	if (mmc->dom == DOMID_SELF) {
-		error = ENOTSUP;	/* Too paranoid? */
-		goto done;
-	}
-
-	for (umme = mmc->entry, i = 0; i < mmc->num; i++, umme++) {
-		privcmd_mmap_entry_t __mmapent, *mme = &__mmapent;
-		caddr_t addr;
-
-		if (ddi_copyin(umme, mme, sizeof (*mme), mode)) {
-			error = EFAULT;
-			break;
-		}
-
-		DTRACE_XPV3(mmap__entry, ulong_t, mme->va, ulong_t, mme->mfn,
-		    ulong_t, mme->npages);
-
-		if (mme->mfn == MFN_INVALID) {
-			error = EINVAL;
-			break;
-		}
-
-		addr = (caddr_t)mme->va;
-
-		/*
-		 * Find the segment we want to mess with, then add
-		 * the mfn range to the segment.
-		 */
-		AS_LOCK_ENTER(as, RW_READER);
-		if ((seg = as_findseg(as, addr, 0)) == NULL ||
-		    addr + mmu_ptob(mme->npages) > seg->s_base + seg->s_size)
-			error = EINVAL;
-		else
-			error = segmf_add_mfns(seg, addr,
-			    mme->mfn, mme->npages, mmc->dom);
-		AS_LOCK_EXIT(as);
-
-		if (error != 0)
-			break;
-	}
-
-done:
-	DTRACE_XPV1(mmap__end, int, error);
-
-	return (error);
-}
-
-/*
- * Set up the address range to map to an array of mfns in
- * a foreign domain.  Used in the following way:
- *
- *	privcmd_mmap_batch_t p;
- *
- *	addr = mmap(NULL, size, prot, MAP_SHARED, fd, 0);
- *	p.num = number of pages
- *	p.dom = domid
- *	p.addr = addr;
- *	p.arr = array of mfns, indexed 0 .. p.num - 1
- *	ioctl(fd, IOCTL_PRIVCMD_MMAPBATCH, &p);
- */
-/*ARGSUSED2*/
-static int
-do_privcmd_mmapbatch(void *uarg, int mode, cred_t *cr)
-{
-	privcmd_mmapbatch_t __mmapbatch, *mmb = &__mmapbatch;
-	struct as *as = curproc->p_as;
-	struct seg *seg;
-	int i, error = 0;
-	caddr_t addr;
-	ulong_t *ulp;
-
-	if (ddi_copyin(uarg, mmb, sizeof (*mmb), mode))
-		return (EFAULT);
-
-	DTRACE_XPV3(mmapbatch__start, domid_t, mmb->dom, int, mmb->num,
-	    caddr_t, mmb->addr);
-
-	addr = (caddr_t)mmb->addr;
-	AS_LOCK_ENTER(as, RW_READER);
-	if ((seg = as_findseg(as, addr, 0)) == NULL ||
-	    addr + ptob(mmb->num) > seg->s_base + seg->s_size) {
-		error = EINVAL;
-		goto done;
-	}
-
-	for (i = 0, ulp = mmb->arr;
-	    i < mmb->num; i++, addr += PAGESIZE, ulp++) {
-		mfn_t mfn;
-
-		if (fulword(ulp, &mfn) != 0) {
-			error = EFAULT;
-			break;
-		}
-
-		if (mfn == MFN_INVALID) {
-			/*
-			 * This mfn is invalid and should not be added to
-			 * segmf, as we'd only cause an immediate EFAULT when
-			 * we tried to fault it in.
-			 */
-			mfn |= XEN_DOMCTL_PFINFO_XTAB;
-			continue;
-		}
-
-		if (segmf_add_mfns(seg, addr, mfn, 1, mmb->dom) == 0)
-			continue;
-
-		/*
-		 * Tell the process that this MFN could not be mapped, so it
-		 * won't later try to access it.
-		 */
-		mfn |= XEN_DOMCTL_PFINFO_XTAB;
-		if (sulword(ulp, mfn) != 0) {
-			error = EFAULT;
-			break;
-		}
-	}
-
-done:
-	AS_LOCK_EXIT(as);
-
-	DTRACE_XPV3(mmapbatch__end, int, error, struct seg *, seg, caddr_t,
-	    mmb->addr);
-
-	return (error);
-}
-
-/*ARGSUSED*/
-static int
-privcmd_ioctl(dev_t dev, int cmd, intptr_t arg, int mode, cred_t *cr, int *rval)
-{
-	if (secpolicy_xvm_control(cr))
-		return (EPERM);
-
-	/*
-	 * Everything is a -native- data type.
-	 */
-	if ((mode & FMODELS) != FNATIVE)
-		return (EOVERFLOW);
-
-	switch (cmd) {
-	case IOCTL_PRIVCMD_HYPERCALL:
-		return (do_privcmd_hypercall((void *)arg, mode, cr, rval));
-	case IOCTL_PRIVCMD_MMAP:
-		if (DOMAIN_IS_PRIVILEGED(xen_info))
-			return (do_privcmd_mmap((void *)arg, mode, cr));
-		break;
-	case IOCTL_PRIVCMD_MMAPBATCH:
-		if (DOMAIN_IS_PRIVILEGED(xen_info))
-			return (do_privcmd_mmapbatch((void *)arg, mode, cr));
-		break;
-	default:
-		break;
-	}
-	return (EINVAL);
-}
-
-/*
- * The real magic happens in the segmf segment driver.
- */
-/*ARGSUSED8*/
-static int
-privcmd_segmap(dev_t dev, off_t off, struct as *as, caddr_t *addrp,
-    off_t len, uint_t prot, uint_t maxprot, uint_t flags, cred_t *cr)
-{
-	struct segmf_crargs a;
-	int error;
-
-	if (secpolicy_xvm_control(cr))
-		return (EPERM);
-
-	as_rangelock(as);
-	if ((flags & MAP_FIXED) == 0) {
-		map_addr(addrp, len, (offset_t)off, 0, flags);
-		if (*addrp == NULL) {
-			error = ENOMEM;
-			goto rangeunlock;
-		}
-	} else {
-		/*
-		 * User specified address
-		 */
-		(void) as_unmap(as, *addrp, len);
-	}
-
-	/*
-	 * The mapping *must* be MAP_SHARED at offset 0.
-	 *
-	 * (Foreign pages are treated like device memory; the
-	 * ioctl interface allows the backing objects to be
-	 * arbitrarily redefined to point at any machine frame.)
-	 */
-	if ((flags & MAP_TYPE) != MAP_SHARED || off != 0) {
-		error = EINVAL;
-		goto rangeunlock;
-	}
-
-	a.dev = dev;
-	a.prot = (uchar_t)prot;
-	a.maxprot = (uchar_t)maxprot;
-	error = as_map(as, *addrp, len, segmf_create, &a);
-
-rangeunlock:
-	as_rangeunlock(as);
-	return (error);
-}
-
-static struct cb_ops privcmd_cb_ops = {
-	privcmd_open,
-	nulldev,	/* close */
-	nodev,		/* strategy */
-	nodev,		/* print */
-	nodev,		/* dump */
-	nodev,		/* read */
-	nodev,		/* write */
-	privcmd_ioctl,
-	nodev,		/* devmap */
-	nodev,		/* mmap */
-	privcmd_segmap,
-	nochpoll,	/* poll */
-	ddi_prop_op,
-	NULL,
-	D_64BIT | D_NEW | D_MP
-};
-
-static struct dev_ops privcmd_dv_ops = {
-	DEVO_REV,
-	0,
-	privcmd_getinfo,
-	nulldev,		/* identify */
-	nulldev,		/* probe */
-	privcmd_attach,
-	privcmd_detach,
-	nodev,			/* reset */
-	&privcmd_cb_ops,
-	0,			/* struct bus_ops */
-	NULL,			/* power */
-	ddi_quiesce_not_needed,		/* quiesce */
-};
-
-static struct modldrv modldrv = {
-	&mod_driverops,
-	"privcmd driver",
-	&privcmd_dv_ops
-};
-
-static struct modlinkage modl = {
-	MODREV_1,
-	&modldrv
-};
-
-int
-_init(void)
-{
-	return (mod_install(&modl));
-}
-
-int
-_fini(void)
-{
-	return (mod_remove(&modl));
-}
-
-int
-_info(struct modinfo *modinfo)
-{
-	return (mod_info(&modl, modinfo));
-}
