libxc: NetBSD-specific pieces.

Signed-off-by: Christoph Egger <Christoph.Egger@amd.com>

tools/include/NetBSD/evtchn.h

@@ -0,0 +1,89 @@
+/* $NetBSD: evtchn.h,v 1.1.1.1 2007/06/14 19:39:45 bouyer Exp $ */
+/******************************************************************************
+ * evtchn.h
+ * 
+ * Interface to /dev/xen/evtchn.
+ * 
+ * Copyright (c) 2003-2005, K A Fraser
+ * 
+ * This file may be distributed separately from the Linux kernel, or
+ * incorporated into other software packages, subject to the following license:
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this source file (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use, copy, modify,
+ * merge, publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ * 
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#ifndef __NetBSD_EVTCHN_H__
+#define __NetBSD_EVTCHN_H__
+
+/*
+ * Bind a fresh port to VIRQ @virq.
+ * Return allocated port.
+ */
+#define IOCTL_EVTCHN_BIND_VIRQ				\
+	_IOWR('E', 4, struct ioctl_evtchn_bind_virq)
+struct ioctl_evtchn_bind_virq {
+	unsigned int virq;
+	unsigned int port;
+};
+
+/*
+ * Bind a fresh port to remote <@remote_domain, @remote_port>.
+ * Return allocated port.
+ */
+#define IOCTL_EVTCHN_BIND_INTERDOMAIN			\
+	_IOWR('E', 5, struct ioctl_evtchn_bind_interdomain)
+struct ioctl_evtchn_bind_interdomain {
+	unsigned int remote_domain, remote_port;
+	unsigned int port;
+};
+
+/*
+ * Allocate a fresh port for binding to @remote_domain.
+ * Return allocated port.
+ */
+#define IOCTL_EVTCHN_BIND_UNBOUND_PORT			\
+	_IOWR('E', 6, struct ioctl_evtchn_bind_unbound_port)
+struct ioctl_evtchn_bind_unbound_port {
+	unsigned int remote_domain;
+	unsigned int port;
+};
+
+/*
+ * Unbind previously allocated @port.
+ */
+#define IOCTL_EVTCHN_UNBIND				\
+	_IOW('E', 7, struct ioctl_evtchn_unbind)
+struct ioctl_evtchn_unbind {
+	unsigned int port;
+};
+
+/*
+ * Send event to previously allocated @port.
+ */
+#define IOCTL_EVTCHN_NOTIFY				\
+	_IOW('E', 8, struct ioctl_evtchn_notify)
+struct ioctl_evtchn_notify {
+	unsigned int port;
+};
+
+/* Clear and reinitialise the event buffer. Clear error condition. */
+#define IOCTL_EVTCHN_RESET				\
+	_IO('E', 9)
+
+#endif /* __NetBSD_EVTCHN_H__ */

tools/include/NetBSD/privcmd.h

@@ -0,0 +1,105 @@
+/*	NetBSD: xenio.h,v 1.3 2005/05/24 12:07:12 yamt Exp $	*/
+
+/******************************************************************************
+ * privcmd.h
+ * 
+ * Copyright (c) 2003-2004, K A Fraser
+ * 
+ * This file may be distributed separately from the Linux kernel, or
+ * incorporated into other software packages, subject to the following license:
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this source file (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use, copy, modify,
+ * merge, publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ * 
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#ifndef __NetBSD_PRIVCMD_H__
+#define __NetBSD_PRIVCMD_H__
+
+/* Interface to /proc/xen/privcmd */
+
+typedef struct privcmd_hypercall
+{
+    unsigned long op;
+    unsigned long arg[5];
+} privcmd_hypercall_t;
+
+typedef struct privcmd_mmap_entry {
+    unsigned long va;
+    unsigned long mfn;
+    unsigned long npages;
+} privcmd_mmap_entry_t; 
+
+typedef struct privcmd_mmap {
+    int num;
+    domid_t dom; /* target domain */
+    privcmd_mmap_entry_t *entry;
+} privcmd_mmap_t; 
+
+typedef struct privcmd_mmapbatch {
+    int num;     /* number of pages to populate */
+    domid_t dom; /* target domain */
+    unsigned long addr;  /* virtual address */
+    unsigned long *arr; /* array of mfns - top nibble set on err */
+} privcmd_mmapbatch_t; 
+
+typedef struct privcmd_blkmsg
+{
+    unsigned long op;
+    void         *buf;
+    int           buf_size;
+} privcmd_blkmsg_t;
+
+/*
+ * @cmd: IOCTL_PRIVCMD_HYPERCALL
+ * @arg: &privcmd_hypercall_t
+ * Return: Value returned from execution of the specified hypercall.
+ */
+#define IOCTL_PRIVCMD_HYPERCALL         \
+    _IOWR('P', 0, privcmd_hypercall_t)
+
+#if defined(_KERNEL)
+/* compat */
+#define IOCTL_PRIVCMD_INITDOMAIN_EVTCHN_OLD \
+    _IO('P', 1)
+#endif /* defined(_KERNEL) */
+    
+#define IOCTL_PRIVCMD_MMAP             \
+    _IOW('P', 2, privcmd_mmap_t)
+#define IOCTL_PRIVCMD_MMAPBATCH        \
+    _IOW('P', 3, privcmd_mmapbatch_t)
+#define IOCTL_PRIVCMD_GET_MACH2PHYS_START_MFN \
+    _IOR('P', 4, unsigned long)
+
+/*
+ * @cmd: IOCTL_PRIVCMD_INITDOMAIN_EVTCHN
+ * @arg: n/a
+ * Return: Port associated with domain-controller end of control event channel
+ *         for the initial domain.
+ */
+#define IOCTL_PRIVCMD_INITDOMAIN_EVTCHN \
+    _IOR('P', 5, int)
+
+/* Interface to /dev/xenevt */
+/* EVTCHN_RESET: Clear and reinit the event buffer. Clear error condition. */
+#define EVTCHN_RESET  _IO('E', 1)
+/* EVTCHN_BIND: Bind to the specified event-channel port. */
+#define EVTCHN_BIND   _IOW('E', 2, unsigned long)
+/* EVTCHN_UNBIND: Unbind from the specified event-channel port. */
+#define EVTCHN_UNBIND _IOW('E', 3, unsigned long)
+
+#endif /* __NetBSD_PRIVCMD_H__ */

tools/libxc/Makefile

@@ -23,6 +23,7 @@ CTRL_SRCS-$(CONFIG_X86) += xc_pagetab.c
 CTRL_SRCS-$(CONFIG_Linux) += xc_linux.c
 CTRL_SRCS-$(CONFIG_SunOS) += xc_solaris.c
 CTRL_SRCS-$(CONFIG_X86_Linux) += xc_ptrace.c xc_ptrace_core.c
+CTRL_SRCS-$(CONFIG_NetBSD) += xc_netbsd.c
 
 GUEST_SRCS-y :=
 GUEST_SRCS-y += xg_private.c

tools/libxc/xc_netbsd.c

@@ -0,0 +1,271 @@
+/******************************************************************************
+ *
+ * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, version 2 of the
+ * License.
+ */
+
+#include "xc_private.h"
+
+#include <xen/memory.h>
+#include <xen/sys/evtchn.h>
+#include <unistd.h>
+#include <fcntl.h>
+
+int xc_interface_open(void)
+{
+    int flags, saved_errno;
+    int fd = open("/kern/xen/privcmd", O_RDWR);
+
+    if ( fd == -1 )
+    {
+        PERROR("Could not obtain handle on privileged command interface");
+        return -1;
+    }
+
+    /* Although we return the file handle as the 'xc handle' the API
+       does not specify / guarentee that this integer is in fact
+       a file handle. Thus we must take responsiblity to ensure
+       it doesn't propagate (ie leak) outside the process */
+    if ( (flags = fcntl(fd, F_GETFD)) < 0 )
+    {
+        PERROR("Could not get file handle flags");
+        goto error;
+    }
+    flags |= FD_CLOEXEC;
+    if ( fcntl(fd, F_SETFD, flags) < 0 )
+    {
+        PERROR("Could not set file handle flags");
+        goto error;
+    }
+
+    return fd;
+
+ error:
+    saved_errno = errno;
+    close(fd);
+    errno = saved_errno;
+    return -1;
+}
+
+int xc_interface_close(int xc_handle)
+{
+    return close(xc_handle);
+}
+
+void *xc_map_foreign_batch(int xc_handle, uint32_t dom, int prot,
+                           xen_pfn_t *arr, int num)
+{
+    privcmd_mmapbatch_t ioctlx;
+    void *addr;
+    addr = mmap(NULL, num*PAGE_SIZE, prot, MAP_ANON | MAP_SHARED, -1, 0);
+    if ( addr == MAP_FAILED )
+        return NULL;
+
+    ioctlx.num=num;
+    ioctlx.dom=dom;
+    ioctlx.addr=(unsigned long)addr;
+    ioctlx.arr=arr;
+    if ( ioctl(xc_handle, IOCTL_PRIVCMD_MMAPBATCH, &ioctlx) < 0 )
+    {
+        int saved_errno = errno;
+        perror("XXXXXXXX");
+        (void)munmap(addr, num*PAGE_SIZE);
+        errno = saved_errno;
+        return NULL;
+    }
+    return addr;
+
+}
+
+void *xc_map_foreign_range(int xc_handle, uint32_t dom,
+                           int size, int prot,
+                           unsigned long mfn)
+{
+    privcmd_mmap_t ioctlx;
+    privcmd_mmap_entry_t entry;
+    void *addr;
+    addr = mmap(NULL, size, prot, MAP_ANON | MAP_SHARED, -1, 0);
+    if ( addr == MAP_FAILED )
+        return NULL;
+
+    ioctlx.num=1;
+    ioctlx.dom=dom;
+    ioctlx.entry=&entry;
+    entry.va=(unsigned long) addr;
+    entry.mfn=mfn;
+    entry.npages=(size+PAGE_SIZE-1)>>PAGE_SHIFT;
+    if ( ioctl(xc_handle, IOCTL_PRIVCMD_MMAP, &ioctlx) < 0 )
+    {
+        int saved_errno = errno;
+        (void)munmap(addr, size);
+        errno = saved_errno;
+        return NULL;
+    }
+    return addr;
+}
+
+int xc_map_foreign_ranges(int xc_handle, uint32_t dom,
+                          privcmd_mmap_entry_t *entries, int nr)
+{
+    privcmd_mmap_t ioctlx;
+    int err;
+
+    ioctlx.num   = nr;
+    ioctlx.dom   = dom;
+    ioctlx.entry = entries;
+
+    err = ioctl(xc_handle, IOCTL_PRIVCMD_MMAP, &ioctlx);
+    if (err == 0)
+	return 0;
+    else
+	return -errno;
+}
+
+static int do_privcmd(int xc_handle, unsigned int cmd, unsigned long data)
+{
+    int err = ioctl(xc_handle, cmd, data);
+    if (err == 0)
+	return 0;
+    else
+	return -errno;
+}
+
+int do_xen_hypercall(int xc_handle, privcmd_hypercall_t *hypercall)
+{
+    return do_privcmd(xc_handle,
+                      IOCTL_PRIVCMD_HYPERCALL,
+                      (unsigned long)hypercall);
+}
+
+#define EVTCHN_DEV_NAME  "/dev/xenevt"
+
+int xc_evtchn_open(void)
+{
+    return open(EVTCHN_DEV_NAME, O_NONBLOCK|O_RDWR);
+}
+
+int xc_evtchn_close(int xce_handle)
+{
+    return close(xce_handle);
+}
+
+int xc_evtchn_fd(int xce_handle)
+{
+    return xce_handle;
+}
+
+int xc_evtchn_notify(int xce_handle, evtchn_port_t port)
+{
+    struct ioctl_evtchn_notify notify;
+
+    notify.port = port;
+
+    return ioctl(xce_handle, IOCTL_EVTCHN_NOTIFY, &notify);
+}
+
+evtchn_port_or_error_t
+xc_evtchn_bind_interdomain(int xce_handle, int domid,
+                           evtchn_port_t remote_port)
+{
+    struct ioctl_evtchn_bind_interdomain bind;
+    int ret;
+
+    bind.remote_domain = domid;
+    bind.remote_port = remote_port;
+
+    ret = ioctl(xce_handle, IOCTL_EVTCHN_BIND_INTERDOMAIN, &bind);
+    if (ret == 0)
+	return bind.port;
+    else
+	return -1;
+}
+
+int xc_evtchn_unbind(int xce_handle, evtchn_port_t port)
+{
+    struct ioctl_evtchn_unbind unbind;
+
+    unbind.port = port;
+
+    return ioctl(xce_handle, IOCTL_EVTCHN_UNBIND, &unbind);
+}
+
+evtchn_port_or_error_t
+xc_evtchn_bind_virq(int xce_handle, unsigned int virq)
+{
+    struct ioctl_evtchn_bind_virq bind;
+    int err;
+
+    bind.virq = virq;
+
+    err = ioctl(xce_handle, IOCTL_EVTCHN_BIND_VIRQ, &bind);
+    if (err)
+	return -1;
+    else
+	return bind.port;
+}
+
+static int dorw(int fd, char *data, size_t size, int do_write)
+{
+    size_t offset = 0;
+    ssize_t len;
+
+    while ( offset < size )
+    {
+        if (do_write)
+            len = write(fd, data + offset, size - offset);
+        else
+            len = read(fd, data + offset, size - offset);
+
+        if ( len == -1 )
+        {
+             if ( errno == EINTR )
+                 continue;
+             return -1;
+        }
+
+        offset += len;
+    }
+
+    return 0;
+}
+
+evtchn_port_or_error_t
+xc_evtchn_pending(int xce_handle)
+{
+    evtchn_port_t port;
+
+    if ( dorw(xce_handle, (char *)&port, sizeof(port), 0) == -1 )
+        return -1;
+
+    return port;
+}
+
+int xc_evtchn_unmask(int xce_handle, evtchn_port_t port)
+{
+    return dorw(xce_handle, (char *)&port, sizeof(port), 1);
+}
+
+/* Optionally flush file to disk and discard page cache */
+void discard_file_cache(int fd, int flush) 
+{
+
+    if ( flush && (fsync(fd) < 0) )
+    {
+        /*PERROR("Failed to flush file: %s", strerror(errno));*/
+    }
+}
+
+/*
+ * Local variables:
+ * mode: C
+ * c-set-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */