2009-12-05 12:44:28 +01:00
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/*
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* QEMU S390 virtio target
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*
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* Copyright (c) 2009 Alexander Graf <agraf@suse.de>
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2012-12-18 08:50:59 +01:00
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* Copyright IBM Corp 2012
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2009-12-05 12:44:28 +01:00
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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2012-12-18 08:50:59 +01:00
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* Contributions after 2012-10-29 are licensed under the terms of the
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* GNU GPL, version 2 or (at your option) any later version.
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*
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* You should have received a copy of the GNU (Lesser) General Public
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2009-12-05 12:44:28 +01:00
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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2013-01-25 01:16:39 +01:00
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#include "hw/hw.h"
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2014-10-07 13:59:18 +02:00
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#include "sysemu/block-backend.h"
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2012-12-17 18:20:04 +01:00
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#include "sysemu/blockdev.h"
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#include "sysemu/sysemu.h"
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2012-10-24 08:43:34 +02:00
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#include "net/net.h"
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2013-01-25 01:16:39 +01:00
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#include "hw/boards.h"
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2012-12-17 18:19:49 +01:00
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#include "monitor/monitor.h"
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2013-01-25 01:16:39 +01:00
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#include "hw/loader.h"
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2013-02-05 17:06:20 +01:00
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#include "hw/virtio/virtio.h"
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2009-12-05 12:44:28 +01:00
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#include "hw/sysbus.h"
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2012-12-17 18:20:04 +01:00
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#include "sysemu/kvm.h"
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2012-12-17 18:19:49 +01:00
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#include "exec/address-spaces.h"
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2009-12-05 12:44:28 +01:00
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2013-01-25 01:16:39 +01:00
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#include "hw/s390x/s390-virtio-bus.h"
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2012-10-29 03:13:23 +01:00
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#include "hw/s390x/sclp.h"
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2013-07-16 09:04:04 +02:00
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#include "hw/s390x/s390_flic.h"
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2013-01-25 01:16:39 +01:00
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#include "hw/s390x/s390-virtio.h"
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2015-03-09 15:56:08 +01:00
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#include "cpu.h"
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2009-12-05 12:44:28 +01:00
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//#define DEBUG_S390
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#ifdef DEBUG_S390
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2013-07-29 14:16:37 +02:00
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#define DPRINTF(fmt, ...) \
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2009-12-05 12:44:28 +01:00
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do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0)
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#else
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2013-07-29 14:16:37 +02:00
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#define DPRINTF(fmt, ...) \
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2009-12-05 12:44:28 +01:00
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do { } while (0)
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#endif
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#define MAX_BLK_DEVS 10
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2013-04-22 16:52:53 +02:00
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#define ZIPL_FILENAME "s390-zipl.rom"
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2014-08-20 14:16:34 +02:00
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#define TYPE_S390_MACHINE "s390-machine"
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2009-12-05 12:44:28 +01:00
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2015-03-09 15:56:08 +01:00
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#define S390_TOD_CLOCK_VALUE_MISSING 0x00
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#define S390_TOD_CLOCK_VALUE_PRESENT 0x01
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2009-12-05 12:44:28 +01:00
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static VirtIOS390Bus *s390_bus;
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2012-05-03 04:28:14 +02:00
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static S390CPU **ipi_states;
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2009-12-05 12:44:28 +01:00
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2012-05-03 04:28:14 +02:00
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S390CPU *s390_cpu_addr2state(uint16_t cpu_addr)
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2009-12-05 12:44:28 +01:00
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{
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if (cpu_addr >= smp_cpus) {
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return NULL;
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}
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return ipi_states[cpu_addr];
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}
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2013-01-17 05:23:46 +01:00
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static int s390_virtio_hcall_notify(const uint64_t *args)
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2009-12-05 12:44:28 +01:00
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{
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2013-01-17 05:23:46 +01:00
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uint64_t mem = args[0];
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2009-12-05 12:44:28 +01:00
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int r = 0, i;
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2013-01-17 05:23:46 +01:00
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if (mem > ram_size) {
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VirtIOS390Device *dev = s390_virtio_bus_find_vring(s390_bus, mem, &i);
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2009-12-05 12:44:28 +01:00
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if (dev) {
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2015-04-30 17:53:13 +02:00
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/*
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* Older kernels will use the virtqueue before setting DRIVER_OK.
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* In this case the feature bits are not yet up to date, meaning
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* that several funny things can happen, e.g. the guest thinks
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* EVENT_IDX is on and QEMU thinks it is off. Let's force a feature
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* and status sync.
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*/
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if (!(dev->vdev->status & VIRTIO_CONFIG_S_DRIVER_OK)) {
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s390_virtio_device_update_status(dev);
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}
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2013-01-17 05:23:46 +01:00
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virtio_queue_notify(dev->vdev, i);
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2009-12-05 12:44:28 +01:00
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} else {
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r = -EINVAL;
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}
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2013-01-17 05:23:46 +01:00
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} else {
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/* Early printk */
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2009-12-05 12:44:28 +01:00
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}
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2013-01-17 05:23:46 +01:00
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return r;
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}
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static int s390_virtio_hcall_reset(const uint64_t *args)
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{
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uint64_t mem = args[0];
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VirtIOS390Device *dev;
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dev = s390_virtio_bus_find_mem(s390_bus, mem);
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2013-01-23 00:24:08 +01:00
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if (dev == NULL) {
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return -EINVAL;
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}
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2013-01-17 05:23:46 +01:00
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virtio_reset(dev->vdev);
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Switch non-CPU callers from ld/st*_phys to address_space_ld/st*
Switch all the uses of ld/st*_phys to address_space_ld/st*,
except for those cases where the address space is the CPU's
(ie cs->as). This was done with the following script which
generates a Coccinelle patch.
A few over-80-columns lines in the result were rewrapped by
hand where Coccinelle failed to do the wrapping automatically,
as well as one location where it didn't put a line-continuation
'\' when wrapping lines on a change made to a match inside
a macro definition.
===begin===
#!/bin/sh -e
# Usage:
# ./ldst-phys.spatch.sh > ldst-phys.spatch
# spatch -sp_file ldst-phys.spatch -dir . | sed -e '/^+/s/\t/ /g' > out.patch
# patch -p1 < out.patch
for FN in ub uw_le uw_be l_le l_be q_le q_be uw l q; do
cat <<EOF
@ cpu_matches_ld_${FN} @
expression E1,E2;
identifier as;
@@
ld${FN}_phys(E1->as,E2)
@ other_matches_ld_${FN} depends on !cpu_matches_ld_${FN} @
expression E1,E2;
@@
-ld${FN}_phys(E1,E2)
+address_space_ld${FN}(E1,E2, MEMTXATTRS_UNSPECIFIED, NULL)
EOF
done
for FN in b w_le w_be l_le l_be q_le q_be w l q; do
cat <<EOF
@ cpu_matches_st_${FN} @
expression E1,E2,E3;
identifier as;
@@
st${FN}_phys(E1->as,E2,E3)
@ other_matches_st_${FN} depends on !cpu_matches_st_${FN} @
expression E1,E2,E3;
@@
-st${FN}_phys(E1,E2,E3)
+address_space_st${FN}(E1,E2,E3, MEMTXATTRS_UNSPECIFIED, NULL)
EOF
done
===endit===
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
2015-04-26 17:49:24 +02:00
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address_space_stb(&address_space_memory,
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dev->dev_offs + VIRTIO_DEV_OFFS_STATUS, 0,
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MEMTXATTRS_UNSPECIFIED, NULL);
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2013-01-17 05:23:46 +01:00
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s390_virtio_device_sync(dev);
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s390_virtio_reset_idx(dev);
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return 0;
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}
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static int s390_virtio_hcall_set_status(const uint64_t *args)
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{
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uint64_t mem = args[0];
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int r = 0;
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VirtIOS390Device *dev;
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dev = s390_virtio_bus_find_mem(s390_bus, mem);
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if (dev) {
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s390_virtio_device_update_status(dev);
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} else {
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2009-12-05 12:44:28 +01:00
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r = -EINVAL;
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}
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2011-04-15 17:32:50 +02:00
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return r;
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2009-12-05 12:44:28 +01:00
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}
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2013-01-17 05:23:46 +01:00
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static void s390_virtio_register_hcalls(void)
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{
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s390_register_virtio_hypercall(KVM_S390_VIRTIO_NOTIFY,
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s390_virtio_hcall_notify);
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s390_register_virtio_hypercall(KVM_S390_VIRTIO_RESET,
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s390_virtio_hcall_reset);
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s390_register_virtio_hypercall(KVM_S390_VIRTIO_SET_STATUS,
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s390_virtio_hcall_set_status);
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}
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2013-01-24 03:28:09 +01:00
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void s390_init_ipl_dev(const char *kernel_filename,
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const char *kernel_cmdline,
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2013-04-22 16:52:53 +02:00
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const char *initrd_filename,
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2015-02-12 18:02:13 +01:00
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const char *firmware,
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bool enforce_bios)
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2013-01-24 03:28:09 +01:00
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{
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DeviceState *dev;
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dev = qdev_create(NULL, "s390-ipl");
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if (kernel_filename) {
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qdev_prop_set_string(dev, "kernel", kernel_filename);
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}
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if (initrd_filename) {
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qdev_prop_set_string(dev, "initrd", initrd_filename);
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}
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qdev_prop_set_string(dev, "cmdline", kernel_cmdline);
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2013-04-22 16:52:53 +02:00
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qdev_prop_set_string(dev, "firmware", firmware);
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2015-02-12 18:02:13 +01:00
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qdev_prop_set_bit(dev, "enforce_bios", enforce_bios);
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2015-02-12 18:02:14 +01:00
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object_property_add_child(qdev_get_machine(), "s390-ipl",
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OBJECT(dev), NULL);
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2013-01-24 03:28:09 +01:00
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qdev_init_nofail(dev);
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}
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void s390_init_cpus(const char *cpu_model, uint8_t *storage_keys)
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{
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int i;
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if (cpu_model == NULL) {
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cpu_model = "host";
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}
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ipi_states = g_malloc(sizeof(S390CPU *) * smp_cpus);
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for (i = 0; i < smp_cpus; i++) {
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S390CPU *cpu;
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2013-01-17 18:51:17 +01:00
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CPUState *cs;
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2013-01-24 03:28:09 +01:00
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cpu = cpu_s390x_init(cpu_model);
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2013-01-17 18:51:17 +01:00
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cs = CPU(cpu);
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2013-01-24 03:28:09 +01:00
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ipi_states[i] = cpu;
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2013-01-17 18:51:17 +01:00
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cs->halted = 1;
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2013-08-26 08:31:06 +02:00
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cs->exception_index = EXCP_HLT;
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2013-01-24 03:28:09 +01:00
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cpu->env.storage_keys = storage_keys;
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}
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}
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void s390_create_virtio_net(BusState *bus, const char *name)
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{
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int i;
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for (i = 0; i < nb_nics; i++) {
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NICInfo *nd = &nd_table[i];
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DeviceState *dev;
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if (!nd->model) {
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nd->model = g_strdup("virtio");
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}
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if (strcmp(nd->model, "virtio")) {
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fprintf(stderr, "S390 only supports VirtIO nics\n");
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exit(1);
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}
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dev = qdev_create(bus, name);
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qdev_set_nic_properties(dev, nd);
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qdev_init_nofail(dev);
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}
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}
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2015-03-09 15:56:08 +01:00
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void gtod_save(QEMUFile *f, void *opaque)
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{
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uint64_t tod_low;
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uint8_t tod_high;
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int r;
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r = s390_get_clock(&tod_high, &tod_low);
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if (r) {
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fprintf(stderr, "WARNING: Unable to get guest clock for migration. "
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"Error code %d. Guest clock will not be migrated "
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"which could cause the guest to hang.\n", r);
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qemu_put_byte(f, S390_TOD_CLOCK_VALUE_MISSING);
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return;
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}
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qemu_put_byte(f, S390_TOD_CLOCK_VALUE_PRESENT);
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qemu_put_byte(f, tod_high);
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qemu_put_be64(f, tod_low);
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}
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int gtod_load(QEMUFile *f, void *opaque, int version_id)
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{
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uint64_t tod_low;
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uint8_t tod_high;
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int r;
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if (qemu_get_byte(f) == S390_TOD_CLOCK_VALUE_MISSING) {
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fprintf(stderr, "WARNING: Guest clock was not migrated. This could "
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"cause the guest to hang.\n");
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return 0;
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}
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tod_high = qemu_get_byte(f);
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tod_low = qemu_get_be64(f);
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r = s390_set_clock(&tod_high, &tod_low);
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if (r) {
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fprintf(stderr, "WARNING: Unable to set guest clock value. "
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"s390_get_clock returned error %d. This could cause "
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"the guest to hang.\n", r);
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}
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return 0;
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}
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2009-12-05 12:44:28 +01:00
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/* PC hardware initialisation */
|
2014-05-07 16:42:57 +02:00
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static void s390_init(MachineState *machine)
|
2009-12-05 12:44:28 +01:00
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{
|
2014-05-07 16:42:57 +02:00
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ram_addr_t my_ram_size = machine->ram_size;
|
2011-10-02 17:06:42 +02:00
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MemoryRegion *sysmem = get_system_memory();
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MemoryRegion *ram = g_new(MemoryRegion, 1);
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2014-08-28 17:25:34 +02:00
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int increment_size = 20;
|
2011-04-15 17:32:50 +02:00
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uint8_t *storage_keys;
|
2011-11-10 01:59:23 +01:00
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void *virtio_region;
|
2012-10-23 12:30:10 +02:00
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hwaddr virtio_region_len;
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hwaddr virtio_region_start;
|
2009-12-05 12:44:28 +01:00
|
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|
2014-08-28 17:25:34 +02:00
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/*
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* The storage increment size is a multiple of 1M and is a power of 2.
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* The number of storage increments must be MAX_STORAGE_INCREMENTS or
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* fewer.
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*/
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while ((my_ram_size >> increment_size) > MAX_STORAGE_INCREMENTS) {
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increment_size++;
|
2011-05-12 10:50:44 +02:00
|
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}
|
2014-08-28 17:25:34 +02:00
|
|
|
my_ram_size = my_ram_size >> increment_size << increment_size;
|
2011-05-12 10:50:44 +02:00
|
|
|
|
2013-04-09 13:48:19 +02:00
|
|
|
/* let's propagate the changed ram size into the global variable. */
|
2011-05-12 10:50:44 +02:00
|
|
|
ram_size = my_ram_size;
|
2009-12-18 16:29:04 +01:00
|
|
|
|
2009-12-05 12:44:28 +01:00
|
|
|
/* get a BUS */
|
2011-05-12 10:50:44 +02:00
|
|
|
s390_bus = s390_virtio_bus_init(&my_ram_size);
|
2012-10-29 03:13:23 +01:00
|
|
|
s390_sclp_init();
|
2014-05-07 16:42:57 +02:00
|
|
|
s390_init_ipl_dev(machine->kernel_filename, machine->kernel_cmdline,
|
2015-02-12 18:02:13 +01:00
|
|
|
machine->initrd_filename, ZIPL_FILENAME, false);
|
2013-07-16 09:04:04 +02:00
|
|
|
s390_flic_init();
|
2009-12-05 12:44:28 +01:00
|
|
|
|
2013-01-17 05:23:46 +01:00
|
|
|
/* register hypercalls */
|
|
|
|
s390_virtio_register_hcalls();
|
|
|
|
|
2009-12-05 12:44:28 +01:00
|
|
|
/* allocate RAM */
|
2014-09-09 07:27:55 +02:00
|
|
|
memory_region_init_ram(ram, NULL, "s390.ram", my_ram_size, &error_abort);
|
2011-12-20 14:59:12 +01:00
|
|
|
vmstate_register_ram_global(ram);
|
2011-10-02 17:06:42 +02:00
|
|
|
memory_region_add_subregion(sysmem, 0, ram);
|
2009-12-05 12:44:28 +01:00
|
|
|
|
2011-11-10 01:59:23 +01:00
|
|
|
/* clear virtio region */
|
|
|
|
virtio_region_len = my_ram_size - ram_size;
|
|
|
|
virtio_region_start = ram_size;
|
|
|
|
virtio_region = cpu_physical_memory_map(virtio_region_start,
|
|
|
|
&virtio_region_len, true);
|
|
|
|
memset(virtio_region, 0, virtio_region_len);
|
|
|
|
cpu_physical_memory_unmap(virtio_region, virtio_region_len, 1,
|
|
|
|
virtio_region_len);
|
|
|
|
|
2011-04-15 17:32:50 +02:00
|
|
|
/* allocate storage keys */
|
2011-08-21 05:09:37 +02:00
|
|
|
storage_keys = g_malloc0(my_ram_size / TARGET_PAGE_SIZE);
|
2011-04-15 17:32:50 +02:00
|
|
|
|
2009-12-05 12:44:28 +01:00
|
|
|
/* init CPUs */
|
2014-05-07 16:42:57 +02:00
|
|
|
s390_init_cpus(machine->cpu_model, storage_keys);
|
2009-12-05 12:44:28 +01:00
|
|
|
|
|
|
|
/* Create VirtIO network adapters */
|
2013-01-24 03:28:09 +01:00
|
|
|
s390_create_virtio_net((BusState *)s390_bus, "virtio-net-s390");
|
2015-03-09 15:56:08 +01:00
|
|
|
|
|
|
|
/* Register savevm handler for guest TOD clock */
|
|
|
|
register_savevm(NULL, "todclock", 0, 1, gtod_save, gtod_load, NULL);
|
2009-12-05 12:44:28 +01:00
|
|
|
}
|
|
|
|
|
2014-08-20 14:16:35 +02:00
|
|
|
void s390_nmi(NMIState *n, int cpu_index, Error **errp)
|
|
|
|
{
|
|
|
|
CPUState *cs = qemu_get_cpu(cpu_index);
|
|
|
|
|
|
|
|
if (s390_cpu_restart(S390_CPU(cs))) {
|
|
|
|
error_set(errp, QERR_UNSUPPORTED);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2014-08-20 14:16:34 +02:00
|
|
|
static void s390_machine_class_init(ObjectClass *oc, void *data)
|
|
|
|
{
|
|
|
|
MachineClass *mc = MACHINE_CLASS(oc);
|
2014-08-20 14:16:35 +02:00
|
|
|
NMIClass *nc = NMI_CLASS(oc);
|
2014-08-20 14:16:34 +02:00
|
|
|
|
|
|
|
mc->name = "s390-virtio";
|
|
|
|
mc->alias = "s390";
|
|
|
|
mc->desc = "VirtIO based S390 machine";
|
|
|
|
mc->init = s390_init;
|
|
|
|
mc->block_default_type = IF_VIRTIO;
|
|
|
|
mc->max_cpus = 255;
|
|
|
|
mc->no_serial = 1;
|
|
|
|
mc->no_parallel = 1;
|
|
|
|
mc->use_virtcon = 1;
|
|
|
|
mc->no_floppy = 1;
|
|
|
|
mc->no_cdrom = 1;
|
|
|
|
mc->no_sdcard = 1;
|
|
|
|
mc->is_default = 1;
|
2014-08-20 14:16:35 +02:00
|
|
|
nc->nmi_monitor_handler = s390_nmi;
|
2014-08-20 14:16:34 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
static const TypeInfo s390_machine_info = {
|
|
|
|
.name = TYPE_S390_MACHINE,
|
|
|
|
.parent = TYPE_MACHINE,
|
|
|
|
.class_init = s390_machine_class_init,
|
2014-08-20 14:16:35 +02:00
|
|
|
.interfaces = (InterfaceInfo[]) {
|
|
|
|
{ TYPE_NMI },
|
|
|
|
{ }
|
|
|
|
},
|
2009-12-05 12:44:28 +01:00
|
|
|
};
|
|
|
|
|
2014-08-20 14:16:34 +02:00
|
|
|
static void s390_machine_register_types(void)
|
2009-12-05 12:44:28 +01:00
|
|
|
{
|
2014-08-20 14:16:34 +02:00
|
|
|
type_register_static(&s390_machine_info);
|
2009-12-05 12:44:28 +01:00
|
|
|
}
|
|
|
|
|
2014-08-20 14:16:34 +02:00
|
|
|
type_init(s390_machine_register_types)
|