Module Name: src
Committed By: riastradh
Date: Fri Aug 12 11:15:42 UTC 2022
Modified Files:
src/distrib/sets/lists/man: mi
src/etc: MAKEDEV.tmpl
src/etc/etc.alpha: MAKEDEV.conf
src/etc/etc.amd64: MAKEDEV.conf
src/etc/etc.evbarm: MAKEDEV.conf
src/etc/etc.evbmips: MAKEDEV.conf
src/etc/etc.evbppc: MAKEDEV.conf
src/etc/etc.hppa: MAKEDEV.conf
src/etc/etc.i386: MAKEDEV.conf
src/etc/etc.macppc: MAKEDEV.conf
src/share/man/man4: Makefile
src/sys/conf: majors
src/sys/dev/virtio: files.virtio
Added Files:
src/share/man/man4: viocon.4
src/sys/dev/virtio: viocon.c
Log Message:
viocon(4): New virtio tty driver imported from OpenBSD.
viocon* at virtio?
/dev/ttyVI??
Tested under qemu with:
qemu-system-aarch64 ... \
-device virtio-serial \
-chardev socket,path=/tmp/ttyVI00,server=on,wait=off,id=ttyVI00 \
-device virtconsole,chardev=ttyVI00,name=org.NetBSD.dev.ttyVI00 \
...
I updated MAKEDEV.conf to create /dev/ttyVI?? on all ports where it
looks likely to work based on:
(a) having pci or a non-pci virtio attachment,
(b) `qemu-system-$ARCH -M ?' mentioned something resembling the port,
and
(c) `qemu-system-$ARCH -device virtio-serial' launched without
complaining about the virtio-serial device.
(Criterion (c) excluded sparc and sparc64.)
To generate a diff of this commit:
cvs rdiff -u -r1.1752 -r1.1753 src/distrib/sets/lists/man/mi
cvs rdiff -u -r1.230 -r1.231 src/etc/MAKEDEV.tmpl
cvs rdiff -u -r1.14 -r1.15 src/etc/etc.alpha/MAKEDEV.conf
cvs rdiff -u -r1.33 -r1.34 src/etc/etc.amd64/MAKEDEV.conf
cvs rdiff -u -r1.22 -r1.23 src/etc/etc.evbarm/MAKEDEV.conf
cvs rdiff -u -r1.11 -r1.12 src/etc/etc.evbmips/MAKEDEV.conf
cvs rdiff -u -r1.12 -r1.13 src/etc/etc.evbppc/MAKEDEV.conf
cvs rdiff -u -r1.2 -r1.3 src/etc/etc.hppa/MAKEDEV.conf
cvs rdiff -u -r1.34 -r1.35 src/etc/etc.i386/MAKEDEV.conf
cvs rdiff -u -r1.13 -r1.14 src/etc/etc.macppc/MAKEDEV.conf
cvs rdiff -u -r1.727 -r1.728 src/share/man/man4/Makefile
cvs rdiff -u -r0 -r1.1 src/share/man/man4/viocon.4
cvs rdiff -u -r1.101 -r1.102 src/sys/conf/majors
cvs rdiff -u -r1.4 -r1.5 src/sys/dev/virtio/files.virtio
cvs rdiff -u -r0 -r1.1 src/sys/dev/virtio/viocon.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/distrib/sets/lists/man/mi
diff -u src/distrib/sets/lists/man/mi:1.1752 src/distrib/sets/lists/man/mi:1.1753
--- src/distrib/sets/lists/man/mi:1.1752 Sun Jul 10 19:49:24 2022
+++ src/distrib/sets/lists/man/mi Fri Aug 12 11:15:40 2022
@@ -1,4 +1,4 @@
-# $NetBSD: mi,v 1.1752 2022/07/10 19:49:24 nia Exp $
+# $NetBSD: mi,v 1.1753 2022/08/12 11:15:40 riastradh Exp $
#
# Note: don't delete entries from here - mark them as "obsolete" instead.
#
@@ -2047,6 +2047,7 @@
./usr/share/man/cat4/video.0 man-sys-catman .cat
./usr/share/man/cat4/vinum.0 man-obsolete obsolete
./usr/share/man/cat4/vio9p.0 man-sys-catman .cat
+./usr/share/man/cat4/viocon.0 man-sys-catman .cat
./usr/share/man/cat4/vioif.0 man-sys-catman .cat
./usr/share/man/cat4/viomb.0 man-sys-catman .cat
./usr/share/man/cat4/viornd.0 man-sys-catman .cat
@@ -5233,6 +5234,7 @@
./usr/share/man/html4/viaide.html man-sys-htmlman html
./usr/share/man/html4/video.html man-sys-htmlman html
./usr/share/man/html4/vio9p.html man-sys-htmlman html
+./usr/share/man/html4/viocon.html man-sys-htmlman html
./usr/share/man/html4/vioif.html man-sys-htmlman html
./usr/share/man/html4/viomb.html man-sys-htmlman html
./usr/share/man/html4/viornd.html man-sys-htmlman html
@@ -8351,6 +8353,7 @@
./usr/share/man/man4/video.4 man-sys-man .man
./usr/share/man/man4/vinum.4 man-obsolete obsolete
./usr/share/man/man4/vio9p.4 man-sys-man .man
+./usr/share/man/man4/viocon.4 man-sys-man .man
./usr/share/man/man4/vioif.4 man-sys-man .man
./usr/share/man/man4/viomb.4 man-sys-man .man
./usr/share/man/man4/viornd.4 man-sys-man .man
Index: src/etc/MAKEDEV.tmpl
diff -u src/etc/MAKEDEV.tmpl:1.230 src/etc/MAKEDEV.tmpl:1.231
--- src/etc/MAKEDEV.tmpl:1.230 Tue May 17 11:41:41 2022
+++ src/etc/MAKEDEV.tmpl Fri Aug 12 11:15:40 2022
@@ -1,5 +1,5 @@
#!/bin/sh -
-# $NetBSD: MAKEDEV.tmpl,v 1.230 2022/05/17 11:41:41 uwe Exp $
+# $NetBSD: MAKEDEV.tmpl,v 1.231 2022/08/12 11:15:40 riastradh Exp $
#
# Copyright (c) 2003,2007,2008 The NetBSD Foundation, Inc.
# All rights reserved.
@@ -148,6 +148,7 @@
# dmz* UNIBUS DMZ32 (vax)
# dl* UNIBUS DL11 (vax)
# xencons Xen virtual console
+# ttyVI?? viocon(4)
#
# Terminal multiplexors:
# dc* 4 channel serial interface (keyboard, mouse, modem, printer)
@@ -2272,6 +2273,17 @@ scmd[0-9]*)
mkdev scmd$unit c %scmd_chr% $unit 666
;;
+ttyVI[0-9][0-9])
+ port=${i#ttyVI?}
+ devunit=${i%$port}
+ unit=${devunit#ttyVI}
+ mkdev ttyVI$unit$port c %viocon_chr% $((16*$unit + $port))
+ ;;
+
+ttyVI)
+ makedev ttyVI00 ttyVI10 ttyVI20 ttyVI30
+ ;;
+
midevend)
%MI_DEVICES_END%
local)
Index: src/etc/etc.alpha/MAKEDEV.conf
diff -u src/etc/etc.alpha/MAKEDEV.conf:1.14 src/etc/etc.alpha/MAKEDEV.conf:1.15
--- src/etc/etc.alpha/MAKEDEV.conf:1.14 Sun Apr 5 14:09:17 2020
+++ src/etc/etc.alpha/MAKEDEV.conf Fri Aug 12 11:15:41 2022
@@ -1,4 +1,4 @@
-# $NetBSD: MAKEDEV.conf,v 1.14 2020/04/05 14:09:17 jdolecek Exp $
+# $NetBSD: MAKEDEV.conf,v 1.15 2022/08/12 11:15:41 riastradh Exp $
all_md)
makedev wscons stic0 sd0 sd1 sd2 sd3 sd4
@@ -20,6 +20,7 @@ all_md)
makedev bktr
makedev radio
makedev kttcp
+ makedev ttyVI
;;
minimal)
Index: src/etc/etc.amd64/MAKEDEV.conf
diff -u src/etc/etc.amd64/MAKEDEV.conf:1.33 src/etc/etc.amd64/MAKEDEV.conf:1.34
--- src/etc/etc.amd64/MAKEDEV.conf:1.33 Sat Jul 24 11:39:18 2021
+++ src/etc/etc.amd64/MAKEDEV.conf Fri Aug 12 11:15:41 2022
@@ -1,4 +1,4 @@
-# $NetBSD: MAKEDEV.conf,v 1.33 2021/07/24 11:39:18 jmcneill Exp $
+# $NetBSD: MAKEDEV.conf,v 1.34 2022/08/12 11:15:41 riastradh Exp $
# As of 2003-04-17, the "init" case must not create more than 890 entries.
all_md)
@@ -47,6 +47,7 @@ all_md)
makedev xmm0
makedev acpi
makedev smbios
+ makedev ttyVI
;;
xen)
Index: src/etc/etc.evbarm/MAKEDEV.conf
diff -u src/etc/etc.evbarm/MAKEDEV.conf:1.22 src/etc/etc.evbarm/MAKEDEV.conf:1.23
--- src/etc/etc.evbarm/MAKEDEV.conf:1.22 Sun Oct 10 13:03:09 2021
+++ src/etc/etc.evbarm/MAKEDEV.conf Fri Aug 12 11:15:41 2022
@@ -1,4 +1,4 @@
-# $NetBSD: MAKEDEV.conf,v 1.22 2021/10/10 13:03:09 jmcneill Exp $
+# $NetBSD: MAKEDEV.conf,v 1.23 2022/08/12 11:15:41 riastradh Exp $
all_md)
makedev wscons fd0 fd1 wd0 wd1 wd2 wd3 sd0 sd1 sd2 sd3
@@ -28,6 +28,7 @@ all_md)
makedev bpf
makedev openfirm
makedev acpi smbios efi
+ makedev ttyVI
;;
ramdisk|floppy)
Index: src/etc/etc.evbmips/MAKEDEV.conf
diff -u src/etc/etc.evbmips/MAKEDEV.conf:1.11 src/etc/etc.evbmips/MAKEDEV.conf:1.12
--- src/etc/etc.evbmips/MAKEDEV.conf:1.11 Fri Jul 24 12:07:09 2020
+++ src/etc/etc.evbmips/MAKEDEV.conf Fri Aug 12 11:15:41 2022
@@ -1,4 +1,4 @@
-# $NetBSD: MAKEDEV.conf,v 1.11 2020/07/24 12:07:09 jmcneill Exp $
+# $NetBSD: MAKEDEV.conf,v 1.12 2022/08/12 11:15:41 riastradh Exp $
# When creating a /dev file system on MFS, init makes a FS that leaves
# only 890 (or so) inodes free. Therefore the "init" case (used by
@@ -36,6 +36,7 @@ all_md)
makedev iic0 iic1 iic2 iic3 iic4
makedev kttcp
makedev openfirm
+ makedev ttyVI
;;
minimal)
Index: src/etc/etc.evbppc/MAKEDEV.conf
diff -u src/etc/etc.evbppc/MAKEDEV.conf:1.12 src/etc/etc.evbppc/MAKEDEV.conf:1.13
--- src/etc/etc.evbppc/MAKEDEV.conf:1.12 Tue Nov 10 11:22:22 2020
+++ src/etc/etc.evbppc/MAKEDEV.conf Fri Aug 12 11:15:41 2022
@@ -1,4 +1,4 @@
-# $NetBSD: MAKEDEV.conf,v 1.12 2020/11/10 11:22:22 rin Exp $
+# $NetBSD: MAKEDEV.conf,v 1.13 2022/08/12 11:15:41 riastradh Exp $
all_md)
makedev wscons sd0 sd1 sd2 st0 st1 cd0 cd1 wd0 wd1
@@ -23,6 +23,7 @@ all_md)
makedev kttcp
makedev xlcom0
makedev cfs
+ makedev ttyVI
;;
# No bpf?
Index: src/etc/etc.hppa/MAKEDEV.conf
diff -u src/etc/etc.hppa/MAKEDEV.conf:1.2 src/etc/etc.hppa/MAKEDEV.conf:1.3
--- src/etc/etc.hppa/MAKEDEV.conf:1.2 Thu Dec 8 11:31:14 2016
+++ src/etc/etc.hppa/MAKEDEV.conf Fri Aug 12 11:15:41 2022
@@ -1,4 +1,4 @@
-# $NetBSD: MAKEDEV.conf,v 1.2 2016/12/08 11:31:14 nat Exp $
+# $NetBSD: MAKEDEV.conf,v 1.3 2022/08/12 11:15:41 riastradh Exp $
all_md)
makedev wscons
@@ -12,4 +12,5 @@ all_md)
makedev pci0 pci1 pci2 pci3
makedev raid0 raid1 raid2 raid3
makedev sysmon
+ makedev ttyVI
;;
Index: src/etc/etc.i386/MAKEDEV.conf
diff -u src/etc/etc.i386/MAKEDEV.conf:1.34 src/etc/etc.i386/MAKEDEV.conf:1.35
--- src/etc/etc.i386/MAKEDEV.conf:1.34 Sat Jul 24 11:39:19 2021
+++ src/etc/etc.i386/MAKEDEV.conf Fri Aug 12 11:15:41 2022
@@ -1,4 +1,4 @@
-# $NetBSD: MAKEDEV.conf,v 1.34 2021/07/24 11:39:19 jmcneill Exp $
+# $NetBSD: MAKEDEV.conf,v 1.35 2022/08/12 11:15:41 riastradh Exp $
# As of 2005-03-15, the "init" case must not create more than 1024 entries.
all_md)
@@ -51,6 +51,7 @@ all_md)
makedev cfs
makedev acpi
makedev smbios
+ makedev ttyVI
;;
xen)
Index: src/etc/etc.macppc/MAKEDEV.conf
diff -u src/etc/etc.macppc/MAKEDEV.conf:1.13 src/etc/etc.macppc/MAKEDEV.conf:1.14
--- src/etc/etc.macppc/MAKEDEV.conf:1.13 Sun Apr 5 14:36:43 2020
+++ src/etc/etc.macppc/MAKEDEV.conf Fri Aug 12 11:15:41 2022
@@ -1,4 +1,4 @@
-# $NetBSD: MAKEDEV.conf,v 1.13 2020/04/05 14:36:43 sevan Exp $
+# $NetBSD: MAKEDEV.conf,v 1.14 2022/08/12 11:15:41 riastradh Exp $
all_md)
makedev wscons sd0 sd1 sd2 st0 st1 cd0 cd1 wd0 wd1 wd2 wd3
@@ -19,6 +19,7 @@ all_md)
makedev radio
makedev kttcp
makedev cfs
+ makedev ttyVI
;;
floppy)
Index: src/share/man/man4/Makefile
diff -u src/share/man/man4/Makefile:1.727 src/share/man/man4/Makefile:1.728
--- src/share/man/man4/Makefile:1.727 Sun Jul 10 19:49:24 2022
+++ src/share/man/man4/Makefile Fri Aug 12 11:15:41 2022
@@ -1,4 +1,4 @@
-# $NetBSD: Makefile,v 1.727 2022/07/10 19:49:24 nia Exp $
+# $NetBSD: Makefile,v 1.728 2022/08/12 11:15:41 riastradh Exp $
# @(#)Makefile 8.1 (Berkeley) 6/18/93
MAN= aac.4 ac97.4 acardide.4 aceride.4 acphy.4 \
@@ -68,7 +68,7 @@ MAN= aac.4 ac97.4 acardide.4 aceride.4 a
uark.4 ubsec.4 udp.4 uep.4 ug.4 uha.4 uk.4 ukphy.4 umb.4 \
unix.4 userconf.4 \
vald.4 valz.4 veriexec.4 vga.4 vge.4 viaide.4 video.4 \
- vio9p.4 vioif.4 viomb.4 viornd.4 vioscsi.4 virt.4 virtio.4 \
+ vio9p.4 viocon.4 vioif.4 viomb.4 viornd.4 vioscsi.4 virt.4 virtio.4 \
vether.4 vlan.4 vmmon.4 vmnet.4 vmt.4 vmx.4 vnd.4 voodoofb.4 vr.4 \
vte.4 \
wapbl.4 wb.4 wbsio.4 wd.4 wdc.4 wg.4 wi.4 wm.4 wpi.4 \
Index: src/sys/conf/majors
diff -u src/sys/conf/majors:1.101 src/sys/conf/majors:1.102
--- src/sys/conf/majors:1.101 Tue Dec 7 17:39:54 2021
+++ src/sys/conf/majors Fri Aug 12 11:15:42 2022
@@ -1,4 +1,4 @@
-# $NetBSD: majors,v 1.101 2021/12/07 17:39:54 brad Exp $
+# $NetBSD: majors,v 1.102 2022/08/12 11:15:42 riastradh Exp $
#
# Device majors for Machine-Independent drivers.
#
@@ -95,3 +95,4 @@ device-major smbios char 360
device-major efi char 361 efi
device-major sht3xtemp char 362 sht3xtemp
device-major scmd char 363 scmd
+device-major viocon char 364 viocon
Index: src/sys/dev/virtio/files.virtio
diff -u src/sys/dev/virtio/files.virtio:1.4 src/sys/dev/virtio/files.virtio:1.5
--- src/sys/dev/virtio/files.virtio:1.4 Thu Jul 12 13:05:39 2018
+++ src/sys/dev/virtio/files.virtio Fri Aug 12 11:15:42 2022
@@ -1,6 +1,10 @@
-# $NetBSD: files.virtio,v 1.4 2018/07/12 13:05:39 jakllsch Exp $
+# $NetBSD: files.virtio,v 1.5 2022/08/12 11:15:42 riastradh Exp $
# XXX the contents of the following included file should be moved here
include "dev/pci/files.virtio"
file dev/virtio/virtio_mmio.c virtio_mmio
+
+device viocon
+attach viocon at virtio
+file dev/virtio/viocon.c viocon
Added files:
Index: src/share/man/man4/viocon.4
diff -u /dev/null src/share/man/man4/viocon.4:1.1
--- /dev/null Fri Aug 12 11:15:42 2022
+++ src/share/man/man4/viocon.4 Fri Aug 12 11:15:41 2022
@@ -0,0 +1,66 @@
+.\" $NetBSD: viocon.4,v 1.1 2022/08/12 11:15:41 riastradh Exp $
+.\" $OpenBSD: viocon.4,v 1.3 2017/06/21 08:21:14 akfaew Exp $
+.\"
+.\" Copyright (c) 2015 Stefan Fritsch <s...@sfritsch.de>
+.\"
+.\" Permission to use, copy, modify, and distribute this software for any
+.\" purpose with or without fee is hereby granted, provided that the above
+.\" copyright notice and this permission notice appear in all copies.
+.\"
+.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+.\"
+.Dd $Mdocdate: June 21 2017 $
+.Dt VIOCON 4
+.Os
+.Sh NAME
+.Nm viocon
+.Nd VirtIO console device
+.Sh SYNOPSIS
+.Cd "viocon* at virtio?"
+.Sh DESCRIPTION
+The
+.Nm
+driver provides support for the
+.Xr virtio 4
+console interface provided by KVM, QEMU, and others.
+.Pp
+It provides serial ports that are attached as ttys.
+.Sh FILES
+.Bl -tag -width Pa -compact
+.It Pa /dev/ttyVI00
+.It Pa /dev/ttyVI10
+.It Pa /dev/ttyVI20
+.It Pa /dev/ttyVI30
+.It Pa /dev/ttyVI40
+.El
+.Sh SEE ALSO
+.Xr intro 4 ,
+.Xr tty 4 ,
+.Xr virtio 4
+.Sh HISTORY
+The
+.Nm
+driver first appeared in
+.Ox 5.9 .
+.Sh AUTHORS
+.An -nosplit
+The
+.Nm
+driver was written for
+.Ox
+by
+.An Stefan Fritsch Aq Mt s...@sfritsch.de .
+It was ported to
+.Nx 10.0 .
+.Sh BUGS
+Use as a kernel console for
+.Nx
+is not yet supported.
+.Pp
+The multiport feature is not yet supported.
Index: src/sys/dev/virtio/viocon.c
diff -u /dev/null src/sys/dev/virtio/viocon.c:1.1
--- /dev/null Fri Aug 12 11:15:42 2022
+++ src/sys/dev/virtio/viocon.c Fri Aug 12 11:15:42 2022
@@ -0,0 +1,632 @@
+/* $NetSBD$ */
+/* $OpenBSD: viocon.c,v 1.8 2021/11/05 11:38:29 mpi Exp $ */
+
+/*
+ * Copyright (c) 2013-2015 Stefan Fritsch <s...@sfritsch.de>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/cdefs.h>
+__KERNEL_RCSID(0, "$NetBSD: viocon.c,v 1.1 2022/08/12 11:15:42 riastradh Exp $");
+
+#include <sys/param.h>
+#include <sys/types.h>
+
+#include <sys/bus.h>
+#include <sys/conf.h>
+#include <sys/device.h>
+#include <sys/kauth.h>
+#include <sys/kernel.h>
+#include <sys/kmem.h>
+#include <sys/lwp.h>
+#include <sys/systm.h>
+#include <sys/tty.h>
+
+#include <dev/pci/virtioreg.h>
+#include <dev/pci/virtiovar.h>
+
+#include "ioconf.h"
+
+/* OpenBSD compat shims */
+#define ttymalloc(speed) tty_alloc()
+#define splassert(ipl) __nothing
+#define virtio_notify(vsc, vq) virtio_enqueue_commit(vsc, vq, -1, true)
+#define ttwakeupwr(tp) __nothing
+
+/* features */
+#define VIRTIO_CONSOLE_F_SIZE (1ULL<<0)
+#define VIRTIO_CONSOLE_F_MULTIPORT (1ULL<<1)
+#define VIRTIO_CONSOLE_F_EMERG_WRITE (1ULL<<2)
+
+/* config space */
+#define VIRTIO_CONSOLE_COLS 0 /* 16 bits */
+#define VIRTIO_CONSOLE_ROWS 2 /* 16 bits */
+#define VIRTIO_CONSOLE_MAX_NR_PORTS 4 /* 32 bits */
+#define VIRTIO_CONSOLE_EMERG_WR 8 /* 32 bits */
+
+#define VIOCON_DEBUG 0
+
+#if VIOCON_DEBUG
+#define DPRINTF(x...) printf(x)
+#else
+#define DPRINTF(x...)
+#endif
+
+#define VIRTIO_CONSOLE_FLAG_BITS \
+ VIRTIO_COMMON_FLAG_BITS \
+ "b\x00" "SIZE\0" \
+ "b\x01" "MULTIPORT\0" \
+ "b\x02" "EMERG_WRITE\0"
+
+struct virtio_console_control {
+ uint32_t id; /* Port number */
+
+#define VIRTIO_CONSOLE_DEVICE_READY 0
+#define VIRTIO_CONSOLE_PORT_ADD 1
+#define VIRTIO_CONSOLE_PORT_REMOVE 2
+#define VIRTIO_CONSOLE_PORT_READY 3
+#define VIRTIO_CONSOLE_CONSOLE_PORT 4
+#define VIRTIO_CONSOLE_RESIZE 5
+#define VIRTIO_CONSOLE_PORT_OPEN 6
+#define VIRTIO_CONSOLE_PORT_NAME 7
+ uint16_t event;
+
+ uint16_t value;
+};
+
+struct virtio_console_control_resize {
+ /* yes, the order is different than in config space */
+ uint16_t rows;
+ uint16_t cols;
+};
+
+#define BUFSIZE 128
+
+#define VIOCONUNIT(x) (minor(x) >> 4)
+#define VIOCONPORT(x) (minor(x) & 0x0f)
+
+struct viocon_port {
+ struct viocon_softc *vp_sc;
+ struct virtqueue *vp_rx;
+ struct virtqueue *vp_tx;
+ void *vp_si;
+ struct tty *vp_tty;
+ const char *vp_name;
+ bus_dma_segment_t vp_dmaseg;
+ bus_dmamap_t vp_dmamap;
+#ifdef NOTYET
+ unsigned int vp_host_open:1; /* XXX needs F_MULTIPORT */
+ unsigned int vp_guest_open:1; /* XXX needs F_MULTIPORT */
+ unsigned int vp_is_console:1; /* XXX needs F_MULTIPORT */
+#endif
+ unsigned int vp_iflow:1; /* rx flow control */
+ uint16_t vp_rows;
+ uint16_t vp_cols;
+ u_char *vp_rx_buf;
+ u_char *vp_tx_buf;
+};
+
+struct viocon_softc {
+ struct device *sc_dev;
+ struct virtio_softc *sc_virtio;
+ struct virtqueue *sc_vqs;
+
+ struct virtqueue *sc_c_vq_rx;
+ struct virtqueue *sc_c_vq_tx;
+
+ unsigned int sc_max_ports;
+ struct viocon_port **sc_ports;
+
+ bus_dmamap_t sc_dmamap;
+};
+
+int viocon_match(struct device *, struct cfdata *, void *);
+void viocon_attach(struct device *, struct device *, void *);
+int viocon_tx_intr(struct virtqueue *);
+int viocon_tx_drain(struct viocon_port *, struct virtqueue *vq);
+int viocon_rx_intr(struct virtqueue *);
+void viocon_rx_soft(void *);
+void viocon_rx_fill(struct viocon_port *);
+int viocon_port_create(struct viocon_softc *, int);
+void vioconstart(struct tty *);
+int vioconhwiflow(struct tty *, int);
+int vioconparam(struct tty *, struct termios *);
+int vioconopen(dev_t, int, int, struct lwp *);
+int vioconclose(dev_t, int, int, struct lwp *);
+int vioconread(dev_t, struct uio *, int);
+int vioconwrite(dev_t, struct uio *, int);
+void vioconstop(struct tty *, int);
+int vioconioctl(dev_t, u_long, void *, int, struct lwp *);
+struct tty *viocontty(dev_t dev);
+
+CFATTACH_DECL_NEW(viocon, sizeof(struct viocon_softc),
+ viocon_match, viocon_attach, /*detach*/NULL, /*activate*/NULL);
+
+const struct cdevsw viocon_cdevsw = {
+ .d_open = vioconopen,
+ .d_close = vioconclose,
+ .d_read = vioconread,
+ .d_write = vioconwrite,
+ .d_ioctl = vioconioctl,
+ .d_stop = vioconstop,
+ .d_tty = viocontty,
+ .d_poll = nopoll, /* XXX */
+ .d_mmap = nommap,
+ .d_kqfilter = ttykqfilter,
+ .d_discard = nodiscard,
+ .d_flag = D_TTY,
+};
+
+static inline struct viocon_softc *
+dev2sc(dev_t dev)
+{
+ return device_lookup_private(&viocon_cd, VIOCONUNIT(dev));
+}
+
+static inline struct viocon_port *
+dev2port(dev_t dev)
+{
+ return dev2sc(dev)->sc_ports[VIOCONPORT(dev)];
+}
+
+int viocon_match(struct device *parent, struct cfdata *match, void *aux)
+{
+ struct virtio_attach_args *va = aux;
+ if (va->sc_childdevid == VIRTIO_DEVICE_ID_CONSOLE)
+ return 1;
+ return 0;
+}
+
+void
+viocon_attach(struct device *parent, struct device *self, void *aux)
+{
+ struct viocon_softc *sc = device_private(self);
+ struct virtio_softc *vsc = device_private(parent);
+ int maxports = 1;
+
+ sc->sc_dev = self;
+ if (virtio_child(vsc) != NULL) {
+ aprint_error(": parent %s already has a child\n",
+ device_xname(parent));
+ return;
+ }
+ sc->sc_virtio = vsc;
+ sc->sc_max_ports = maxports;
+
+ sc->sc_vqs = kmem_zalloc(2 * (maxports + 1) * sizeof(sc->sc_vqs[0]),
+ KM_SLEEP);
+ sc->sc_ports = kmem_zalloc(maxports * sizeof(sc->sc_ports[0]),
+ KM_SLEEP);
+
+ virtio_child_attach_start(vsc, self, IPL_TTY, sc->sc_vqs,
+ /*config_change*/NULL, virtio_vq_intr,
+ /*req_flags*/0, /*req_features*/VIRTIO_CONSOLE_F_SIZE,
+ VIRTIO_CONSOLE_FLAG_BITS);
+
+ DPRINTF("%s: softc: %p\n", __func__, sc);
+ if (viocon_port_create(sc, 0) != 0) {
+ printf("\n%s: viocon_port_create failed\n", __func__);
+ goto err;
+ }
+ viocon_rx_fill(sc->sc_ports[0]);
+
+ if (virtio_child_attach_finish(vsc) != 0)
+ goto err;
+
+ return;
+err:
+ kmem_free(sc->sc_vqs, 2 * (maxports + 1) * sizeof(sc->sc_vqs[0]));
+ kmem_free(sc->sc_ports, maxports * sizeof(sc->sc_ports[0]));
+ virtio_child_attach_failed(vsc);
+}
+
+int
+viocon_port_create(struct viocon_softc *sc, int portidx)
+{
+ struct virtio_softc *vsc = sc->sc_virtio;
+ int rxidx, txidx, allocsize, nsegs;
+ char name[6];
+ struct viocon_port *vp;
+ void *kva;
+ struct tty *tp;
+
+ vp = kmem_zalloc(sizeof(*vp), KM_SLEEP);
+ if (vp == NULL)
+ return ENOMEM;
+ sc->sc_ports[portidx] = vp;
+ vp->vp_sc = sc;
+ DPRINTF("%s: vp: %p\n", __func__, vp);
+
+ if (portidx == 0)
+ rxidx = 0;
+ else
+ rxidx = 2 * (portidx + 1);
+ txidx = rxidx + 1;
+
+ snprintf(name, sizeof(name), "p%drx", portidx);
+ if (virtio_alloc_vq(vsc, &sc->sc_vqs[rxidx], rxidx, BUFSIZE, 1,
+ name) != 0) {
+ printf("\nCan't alloc %s virtqueue\n", name);
+ goto err;
+ }
+ vp->vp_rx = &sc->sc_vqs[rxidx];
+ vp->vp_rx->vq_done = viocon_rx_intr;
+ vp->vp_si = softint_establish(SOFTINT_SERIAL, viocon_rx_soft, vp);
+ DPRINTF("%s: rx: %p\n", __func__, vp->vp_rx);
+
+ snprintf(name, sizeof(name), "p%dtx", portidx);
+ if (virtio_alloc_vq(vsc, &sc->sc_vqs[txidx], txidx, BUFSIZE, 1,
+ name) != 0) {
+ printf("\nCan't alloc %s virtqueue\n", name);
+ goto err;
+ }
+ vp->vp_tx = &sc->sc_vqs[txidx];
+ vp->vp_tx->vq_done = viocon_tx_intr;
+ DPRINTF("%s: tx: %p\n", __func__, vp->vp_tx);
+
+ allocsize = (vp->vp_rx->vq_num + vp->vp_tx->vq_num) * BUFSIZE;
+
+ if (bus_dmamap_create(virtio_dmat(vsc), allocsize, 1, allocsize, 0,
+ BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW, &vp->vp_dmamap) != 0)
+ goto err;
+ if (bus_dmamem_alloc(virtio_dmat(vsc), allocsize, 8, 0, &vp->vp_dmaseg,
+ 1, &nsegs, BUS_DMA_NOWAIT) != 0)
+ goto err;
+ if (bus_dmamem_map(virtio_dmat(vsc), &vp->vp_dmaseg, nsegs,
+ allocsize, &kva, BUS_DMA_NOWAIT) != 0)
+ goto err;
+ memset(kva, 0, allocsize);
+ if (bus_dmamap_load(virtio_dmat(vsc), vp->vp_dmamap, kva,
+ allocsize, NULL, BUS_DMA_NOWAIT) != 0)
+ goto err;
+ vp->vp_rx_buf = (unsigned char *)kva;
+ /*
+ * XXX use only a small circular tx buffer instead of many BUFSIZE buffers?
+ */
+ vp->vp_tx_buf = vp->vp_rx_buf + vp->vp_rx->vq_num * BUFSIZE;
+
+ if (virtio_features(vsc) & VIRTIO_CONSOLE_F_SIZE) {
+ vp->vp_cols = virtio_read_device_config_2(vsc,
+ VIRTIO_CONSOLE_COLS);
+ vp->vp_rows = virtio_read_device_config_2(vsc,
+ VIRTIO_CONSOLE_ROWS);
+ }
+
+ tp = ttymalloc(1000000);
+ tp->t_oproc = vioconstart;
+ tp->t_param = vioconparam;
+ tp->t_hwiflow = vioconhwiflow;
+ tp->t_dev = (device_unit(sc->sc_dev) << 4) | portidx;
+ vp->vp_tty = tp;
+ DPRINTF("%s: tty: %p\n", __func__, tp);
+
+ virtio_start_vq_intr(vsc, vp->vp_rx);
+ virtio_start_vq_intr(vsc, vp->vp_tx);
+
+ return 0;
+err:
+ panic("%s failed", __func__);
+ return -1;
+}
+
+int
+viocon_tx_drain(struct viocon_port *vp, struct virtqueue *vq)
+{
+ struct virtio_softc *vsc = vq->vq_owner;
+ int ndone = 0, len, slot;
+
+ splassert(IPL_TTY);
+ while (virtio_dequeue(vsc, vq, &slot, &len) == 0) {
+ bus_dmamap_sync(virtio_dmat(vsc), vp->vp_dmamap,
+ vp->vp_tx_buf - vp->vp_rx_buf + slot * BUFSIZE, BUFSIZE,
+ BUS_DMASYNC_POSTREAD);
+ virtio_dequeue_commit(vsc, vq, slot);
+ ndone++;
+ }
+ return ndone;
+}
+
+int
+viocon_tx_intr(struct virtqueue *vq)
+{
+ struct virtio_softc *vsc = vq->vq_owner;
+ struct viocon_softc *sc = device_private(virtio_child(vsc));
+ int ndone = 0;
+ int portidx = (vq->vq_index - 1) / 2;
+ struct viocon_port *vp = sc->sc_ports[portidx];
+ struct tty *tp = vp->vp_tty;
+
+ splassert(IPL_TTY);
+ ndone = viocon_tx_drain(vp, vq);
+ if (ndone && ISSET(tp->t_state, TS_BUSY)) {
+ CLR(tp->t_state, TS_BUSY);
+ (*tp->t_linesw->l_start)(tp);
+ }
+
+ return 1;
+}
+
+void
+viocon_rx_fill(struct viocon_port *vp)
+{
+ struct virtqueue *vq = vp->vp_rx;
+ struct virtio_softc *vsc = vp->vp_sc->sc_virtio;
+ int r, slot, ndone = 0;
+
+ while ((r = virtio_enqueue_prep(vsc, vq, &slot)) == 0) {
+ if (virtio_enqueue_reserve(vsc, vq, slot, 1) != 0)
+ break;
+ bus_dmamap_sync(virtio_dmat(vsc), vp->vp_dmamap, slot * BUFSIZE,
+ BUFSIZE, BUS_DMASYNC_PREREAD);
+ virtio_enqueue_p(vsc, vq, slot, vp->vp_dmamap, slot * BUFSIZE,
+ BUFSIZE, 0);
+ virtio_enqueue_commit(vsc, vq, slot, 0);
+ ndone++;
+ }
+ KASSERT(r == 0 || r == EAGAIN);
+ if (ndone > 0)
+ virtio_notify(vsc, vq);
+}
+
+int
+viocon_rx_intr(struct virtqueue *vq)
+{
+ struct virtio_softc *vsc = vq->vq_owner;
+ struct viocon_softc *sc = device_private(virtio_child(vsc));
+ int portidx = (vq->vq_index - 1) / 2;
+ struct viocon_port *vp = sc->sc_ports[portidx];
+
+ softint_schedule(vp->vp_si);
+ return 1;
+}
+
+void
+viocon_rx_soft(void *arg)
+{
+ struct viocon_port *vp = arg;
+ struct virtqueue *vq = vp->vp_rx;
+ struct virtio_softc *vsc = vq->vq_owner;
+ struct tty *tp = vp->vp_tty;
+ int slot, len, i;
+ u_char *p;
+
+ while (!vp->vp_iflow && virtio_dequeue(vsc, vq, &slot, &len) == 0) {
+ bus_dmamap_sync(virtio_dmat(vsc), vp->vp_dmamap,
+ slot * BUFSIZE, BUFSIZE, BUS_DMASYNC_POSTREAD);
+ p = vp->vp_rx_buf + slot * BUFSIZE;
+ for (i = 0; i < len; i++)
+ (*tp->t_linesw->l_rint)(*p++, tp);
+ virtio_dequeue_commit(vsc, vq, slot);
+ }
+
+ viocon_rx_fill(vp);
+
+ return;
+}
+
+void
+vioconstart(struct tty *tp)
+{
+ struct viocon_softc *sc = dev2sc(tp->t_dev);
+ struct virtio_softc *vsc;
+ struct viocon_port *vp = dev2port(tp->t_dev);
+ struct virtqueue *vq;
+ u_char *buf;
+ int s, cnt, slot, ret, ndone;
+
+ vsc = sc->sc_virtio;
+ vq = vp->vp_tx;
+
+ s = spltty();
+
+ ndone = viocon_tx_drain(vp, vq);
+ if (ISSET(tp->t_state, TS_BUSY)) {
+ if (ndone > 0)
+ CLR(tp->t_state, TS_BUSY);
+ else
+ goto out;
+ }
+ if (ISSET(tp->t_state, TS_TIMEOUT | TS_TTSTOP))
+ goto out;
+
+ if (tp->t_outq.c_cc == 0)
+ goto out;
+ ndone = 0;
+
+ while (tp->t_outq.c_cc > 0) {
+ ret = virtio_enqueue_prep(vsc, vq, &slot);
+ if (ret == EAGAIN) {
+ SET(tp->t_state, TS_BUSY);
+ break;
+ }
+ KASSERT(ret == 0);
+ ret = virtio_enqueue_reserve(vsc, vq, slot, 1);
+ KASSERT(ret == 0);
+ buf = vp->vp_tx_buf + slot * BUFSIZE;
+ cnt = q_to_b(&tp->t_outq, buf, BUFSIZE);
+ bus_dmamap_sync(virtio_dmat(vsc), vp->vp_dmamap,
+ vp->vp_tx_buf - vp->vp_rx_buf + slot * BUFSIZE, cnt,
+ BUS_DMASYNC_PREWRITE);
+ virtio_enqueue_p(vsc, vq, slot, vp->vp_dmamap,
+ vp->vp_tx_buf - vp->vp_rx_buf + slot * BUFSIZE, cnt, 1);
+ virtio_enqueue_commit(vsc, vq, slot, 0);
+ ndone++;
+ }
+ if (ndone > 0)
+ virtio_notify(vsc, vq);
+ ttwakeupwr(tp);
+out:
+ splx(s);
+}
+
+int
+vioconhwiflow(struct tty *tp, int stop)
+{
+ struct viocon_port *vp = dev2port(tp->t_dev);
+ int s;
+
+ s = spltty();
+ vp->vp_iflow = stop;
+ if (stop) {
+ virtio_stop_vq_intr(vp->vp_sc->sc_virtio, vp->vp_rx);
+ } else {
+ virtio_start_vq_intr(vp->vp_sc->sc_virtio, vp->vp_rx);
+ softint_schedule(vp->vp_si);
+ }
+ splx(s);
+ return 1;
+}
+
+int
+vioconparam(struct tty *tp, struct termios *t)
+{
+ tp->t_ispeed = t->c_ispeed;
+ tp->t_ospeed = t->c_ospeed;
+ tp->t_cflag = t->c_cflag;
+
+ vioconstart(tp);
+ return 0;
+}
+
+int
+vioconopen(dev_t dev, int flag, int mode, struct lwp *l)
+{
+ int unit = VIOCONUNIT(dev);
+ int port = VIOCONPORT(dev);
+ struct viocon_softc *sc;
+ struct viocon_port *vp;
+ struct tty *tp;
+ int s, error;
+
+ sc = device_lookup_private(&viocon_cd, unit);
+ if (sc == NULL)
+ return (ENXIO);
+ if (!device_is_active(sc->sc_dev))
+ return (ENXIO);
+
+ s = spltty();
+ if (port >= sc->sc_max_ports) {
+ splx(s);
+ return (ENXIO);
+ }
+ vp = sc->sc_ports[port];
+ tp = vp->vp_tty;
+#ifdef NOTYET
+ vp->vp_guest_open = 1;
+#endif
+ splx(s);
+
+ if (kauth_authorize_device_tty(l->l_cred, KAUTH_DEVICE_TTY_OPEN, tp))
+ return (EBUSY);
+
+ s = spltty();
+ if (!ISSET(tp->t_state, TS_ISOPEN) && tp->t_wopen == 0) {
+ ttychars(tp);
+ tp->t_ispeed = 1000000;
+ tp->t_ospeed = 1000000;
+ tp->t_cflag = TTYDEF_CFLAG|CLOCAL|CRTSCTS;
+ tp->t_iflag = TTYDEF_IFLAG;
+ tp->t_oflag = TTYDEF_OFLAG;
+ tp->t_lflag = TTYDEF_LFLAG;
+ if (vp->vp_cols != 0) {
+ tp->t_winsize.ws_col = vp->vp_cols;
+ tp->t_winsize.ws_row = vp->vp_rows;
+ }
+
+ vioconparam(tp, &tp->t_termios);
+ ttsetwater(tp);
+ }
+ splx(s);
+
+ error = (*tp->t_linesw->l_open)(dev, tp);
+ return error;
+}
+
+int
+vioconclose(dev_t dev, int flag, int mode, struct lwp *l)
+{
+ struct viocon_port *vp = dev2port(dev);
+ struct tty *tp = vp->vp_tty;
+ int s;
+
+ if (!ISSET(tp->t_state, TS_ISOPEN))
+ return 0;
+
+ (*tp->t_linesw->l_close)(tp, flag);
+ s = spltty();
+#ifdef NOTYET
+ vp->vp_guest_open = 0;
+#endif
+ CLR(tp->t_state, TS_BUSY | TS_FLUSH);
+ ttyclose(tp);
+ splx(s);
+
+ return 0;
+}
+
+int
+vioconread(dev_t dev, struct uio *uio, int flag)
+{
+ struct viocon_port *vp = dev2port(dev);
+ struct tty *tp = vp->vp_tty;
+
+ return (*tp->t_linesw->l_read)(tp, uio, flag);
+}
+
+int
+vioconwrite(dev_t dev, struct uio *uio, int flag)
+{
+ struct viocon_port *vp = dev2port(dev);
+ struct tty *tp = vp->vp_tty;
+
+ return (*tp->t_linesw->l_write)(tp, uio, flag);
+}
+
+struct tty *
+viocontty(dev_t dev)
+{
+ struct viocon_port *vp = dev2port(dev);
+
+ return vp->vp_tty;
+}
+
+void
+vioconstop(struct tty *tp, int flag)
+{
+ int s;
+
+ s = spltty();
+ if (ISSET(tp->t_state, TS_BUSY))
+ if (!ISSET(tp->t_state, TS_TTSTOP))
+ SET(tp->t_state, TS_FLUSH);
+ splx(s);
+}
+
+int
+vioconioctl(dev_t dev, u_long cmd, void *data, int flag, struct lwp *l)
+{
+ struct viocon_port *vp = dev2port(dev);
+ struct tty *tp;
+ int error1, error2;
+
+ tp = vp->vp_tty;
+
+ error1 = (*tp->t_linesw->l_ioctl)(tp, cmd, data, flag, l);
+ if (error1 >= 0)
+ return error1;
+ error2 = ttioctl(tp, cmd, data, flag, l);
+ if (error2 >= 0)
+ return error2;
+ return ENOTTY;
+}
