2012-04-02 13:39:23 +04:00
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/*
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* QEMU S/390 CPU
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*
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* Copyright (c) 2012 SUSE LINUX Products GmbH
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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 2.1 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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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see
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* <http://www.gnu.org/licenses/lgpl-2.1.html>
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*/
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#ifndef QEMU_S390_CPU_QOM_H
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#define QEMU_S390_CPU_QOM_H
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2019-07-09 18:20:52 +03:00
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#include "hw/core/cpu.h"
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2020-09-03 23:43:22 +03:00
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#include "qom/object.h"
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2012-04-02 13:39:23 +04:00
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2017-10-20 14:58:03 +03:00
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#define TYPE_S390_CPU "s390x-cpu"
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2012-04-02 13:39:23 +04:00
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2022-02-14 19:08:40 +03:00
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OBJECT_DECLARE_CPU_TYPE(S390CPU, S390CPUClass, S390_CPU)
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2012-04-02 13:39:23 +04:00
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2017-09-13 16:24:02 +03:00
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typedef struct S390CPUModel S390CPUModel;
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typedef struct S390CPUDef S390CPUDef;
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2022-02-07 15:35:58 +03:00
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typedef struct CPUArchState CPUS390XState;
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2019-11-27 20:50:42 +03:00
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typedef enum cpu_reset_type {
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S390_CPU_RESET_NORMAL,
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2019-11-28 11:37:23 +03:00
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S390_CPU_RESET_INITIAL,
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2019-11-27 20:50:44 +03:00
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S390_CPU_RESET_CLEAR,
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2019-11-27 20:50:42 +03:00
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} cpu_reset_type;
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2012-04-02 13:39:23 +04:00
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/**
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* S390CPUClass:
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2013-01-16 07:00:41 +04:00
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* @parent_realize: The parent class' realize handler.
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2012-04-02 13:39:23 +04:00
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* @parent_reset: The parent class' reset handler.
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2013-07-25 18:45:51 +04:00
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* @load_normal: Performs a load normal.
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s390/cpu: split CPU reset into architectured functions
s390 provides several CPU resets:
- CPU reset, clears interrupts, stop processing, clears TLB, but does
not touch registers
- initial CPU reset, like CPU reset, but also clears PSW, prefix, FPC,
timer and control registers. It does not touch gprs, fprs and acrs (!)
- Power on reset: the full monty
wire up CPUClass reset to the full monty, but provide the lesser resets
as part of S390CPUClass.
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2013-06-28 12:51:09 +04:00
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* @cpu_reset: Performs a CPU reset.
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* @initial_cpu_reset: Performs an initial CPU reset.
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2012-04-02 13:39:23 +04:00
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*
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* An S/390 CPU model.
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*/
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2020-09-03 23:43:22 +03:00
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struct S390CPUClass {
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2012-04-02 13:39:23 +04:00
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/*< private >*/
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CPUClass parent_class;
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/*< public >*/
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2016-09-05 11:52:22 +03:00
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const S390CPUDef *cpu_def;
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2016-09-05 11:52:16 +03:00
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bool kvm_required;
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bool is_static;
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bool is_migration_safe;
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const char *desc;
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2012-04-02 13:39:23 +04:00
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2013-01-16 07:00:41 +04:00
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DeviceRealize parent_realize;
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cpu: Use DeviceClass reset instead of a special CPUClass reset
The CPUClass has a 'reset' method. This is a legacy from when
TYPE_CPU used not to inherit from TYPE_DEVICE. We don't need it any
more, as we can simply use the TYPE_DEVICE reset. The 'cpu_reset()'
function is kept as the API which most places use to reset a CPU; it
is now a wrapper which calls device_cold_reset() and then the
tracepoint function.
This change should not cause CPU objects to be reset more often
than they are at the moment, because:
* nobody is directly calling device_cold_reset() or
qdev_reset_all() on CPU objects
* no CPU object is on a qbus, so they will not be reset either
by somebody calling qbus_reset_all()/bus_cold_reset(), or
by the main "reset sysbus and everything in the qbus tree"
reset that most devices are reset by
Note that this does not change the need for each machine or whatever
to use qemu_register_reset() to arrange to call cpu_reset() -- that
is necessary because CPU objects are not on any qbus, so they don't
get reset when the qbus tree rooted at the sysbus bus is reset, and
this isn't being changed here.
All the changes to the files under target/ were made using the
included Coccinelle script, except:
(1) the deletion of the now-inaccurate and not terribly useful
"CPUClass::reset" comments was done with a perl one-liner afterwards:
perl -n -i -e '/ CPUClass::reset/ or print' target/*/*.c
(2) this bit of the s390 change was done by hand, because the
Coccinelle script is not sophisticated enough to handle the
parent_reset call being inside another function:
| @@ -96,8 +96,9 @@ static void s390_cpu_reset(CPUState *s, cpu_reset_type type)
| S390CPU *cpu = S390_CPU(s);
| S390CPUClass *scc = S390_CPU_GET_CLASS(cpu);
| CPUS390XState *env = &cpu->env;
|+ DeviceState *dev = DEVICE(s);
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|- scc->parent_reset(s);
|+ scc->parent_reset(dev);
| cpu->env.sigp_order = 0;
| s390_cpu_set_state(S390_CPU_STATE_STOPPED, cpu);
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20200303100511.5498-1-peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2020-03-03 13:05:11 +03:00
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DeviceReset parent_reset;
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2013-07-25 18:45:51 +04:00
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void (*load_normal)(CPUState *cpu);
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2019-11-27 20:50:42 +03:00
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void (*reset)(CPUState *cpu, cpu_reset_type type);
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2020-09-03 23:43:22 +03:00
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};
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2012-04-02 13:39:23 +04:00
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#endif
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