qemu-e2k/hw/arm/allwinner-a10.c

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/*
* Allwinner A10 SoC emulation
*
* Copyright (C) 2013 Li Guang
* Written by Li Guang <lig.fnst@cn.fujitsu.com>
*
* 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; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*/
#include "qemu/osdep.h"
2016-03-14 09:01:28 +01:00
#include "qapi/error.h"
#include "qemu-common.h"
#include "cpu.h"
#include "hw/sysbus.h"
#include "hw/devices.h"
#include "hw/arm/allwinner-a10.h"
static void aw_a10_init(Object *obj)
{
AwA10State *s = AW_A10(obj);
object_initialize(&s->cpu, sizeof(s->cpu), "cortex-a8-" TYPE_ARM_CPU);
object_property_add_child(obj, "cpu", OBJECT(&s->cpu), NULL);
object_initialize(&s->intc, sizeof(s->intc), TYPE_AW_A10_PIC);
qdev_set_parent_bus(DEVICE(&s->intc), sysbus_get_default());
object_initialize(&s->timer, sizeof(s->timer), TYPE_AW_A10_PIT);
qdev_set_parent_bus(DEVICE(&s->timer), sysbus_get_default());
object_initialize(&s->emac, sizeof(s->emac), TYPE_AW_EMAC);
qdev_set_parent_bus(DEVICE(&s->emac), sysbus_get_default());
/* FIXME use qdev NIC properties instead of nd_table[] */
if (nd_table[0].used) {
qemu_check_nic_model(&nd_table[0], TYPE_AW_EMAC);
qdev_set_nic_properties(DEVICE(&s->emac), &nd_table[0]);
}
object_initialize(&s->sata, sizeof(s->sata), TYPE_ALLWINNER_AHCI);
qdev_set_parent_bus(DEVICE(&s->sata), sysbus_get_default());
}
static void aw_a10_realize(DeviceState *dev, Error **errp)
{
AwA10State *s = AW_A10(dev);
SysBusDevice *sysbusdev;
uint8_t i;
qemu_irq fiq, irq;
Error *err = NULL;
object_property_set_bool(OBJECT(&s->cpu), true, "realized", &err);
if (err != NULL) {
error_propagate(errp, err);
return;
}
irq = qdev_get_gpio_in(DEVICE(&s->cpu), ARM_CPU_IRQ);
fiq = qdev_get_gpio_in(DEVICE(&s->cpu), ARM_CPU_FIQ);
object_property_set_bool(OBJECT(&s->intc), true, "realized", &err);
if (err != NULL) {
error_propagate(errp, err);
return;
}
sysbusdev = SYS_BUS_DEVICE(&s->intc);
sysbus_mmio_map(sysbusdev, 0, AW_A10_PIC_REG_BASE);
sysbus_connect_irq(sysbusdev, 0, irq);
sysbus_connect_irq(sysbusdev, 1, fiq);
for (i = 0; i < AW_A10_PIC_INT_NR; i++) {
s->irq[i] = qdev_get_gpio_in(DEVICE(&s->intc), i);
}
object_property_set_bool(OBJECT(&s->timer), true, "realized", &err);
if (err != NULL) {
error_propagate(errp, err);
return;
}
sysbusdev = SYS_BUS_DEVICE(&s->timer);
sysbus_mmio_map(sysbusdev, 0, AW_A10_PIT_REG_BASE);
sysbus_connect_irq(sysbusdev, 0, s->irq[22]);
sysbus_connect_irq(sysbusdev, 1, s->irq[23]);
sysbus_connect_irq(sysbusdev, 2, s->irq[24]);
sysbus_connect_irq(sysbusdev, 3, s->irq[25]);
sysbus_connect_irq(sysbusdev, 4, s->irq[67]);
sysbus_connect_irq(sysbusdev, 5, s->irq[68]);
object_property_set_bool(OBJECT(&s->emac), true, "realized", &err);
if (err != NULL) {
error_propagate(errp, err);
return;
}
sysbusdev = SYS_BUS_DEVICE(&s->emac);
sysbus_mmio_map(sysbusdev, 0, AW_A10_EMAC_BASE);
sysbus_connect_irq(sysbusdev, 0, s->irq[55]);
object_property_set_bool(OBJECT(&s->sata), true, "realized", &err);
if (err) {
error_propagate(errp, err);
return;
}
sysbus_mmio_map(SYS_BUS_DEVICE(&s->sata), 0, AW_A10_SATA_BASE);
sysbus_connect_irq(SYS_BUS_DEVICE(&s->sata), 0, s->irq[56]);
hw: Mark devices picking up char backends actively FIXME Character devices defined with -serial and -parallel are for board initialization to wire up. Board code examines serial_hds[] and parallel_hds[] to find them, and creates devices with their qdev chardev properties set accordingly. Except a few devices go on a fishing expedition for a suitable backend instead of exposing a chardev property for board code to set: they use serial_hds[] (often via qemu_char_get_next_serial()) or parallel_hds[] in their realize() or init() method to connect to a backend. Picking up backends that way works when the devices are created by board code. But it's inappropriate for -device or device_add. Not only is it inconsistent with how the other characrer device models work (they connect to a backend explicitly identified by a "chardev" property), it breaks when the backend has been picked up by the board or a previous -device / device_add already. Example: $ qemu-system-ppc64 -M bamboo -S -device i82378 -device pc87312 -device pc87312 qemu-system-ppc64: -device pc87312: Property 'isa-parallel.chardev' can't take value 'parallel0', it's in use Mark them with suitable FIXME comments. Cc: Li Guang <lig.fnst@cn.fujitsu.com> Cc: Peter Crosthwaite <peter.crosthwaite@xilinx.com> Cc: Antony Pavlov <antonynpavlov@gmail.com> Cc: "Edgar E. Iglesias" <edgar.iglesias@gmail.com> Cc: Michael Walle <michael@walle.cc> Cc: Peter Crosthwaite <peter.crosthwaite@xilinx.com> Cc: "Andreas Färber" <andreas.faerber@web.de> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2015-03-25 09:29:20 +01:00
/* FIXME use a qdev chardev prop instead of serial_hds[] */
serial_mm_init(get_system_memory(), AW_A10_UART0_REG_BASE, 2, s->irq[1],
115200, serial_hds[0], DEVICE_NATIVE_ENDIAN);
}
static void aw_a10_class_init(ObjectClass *oc, void *data)
{
DeviceClass *dc = DEVICE_CLASS(oc);
dc->realize = aw_a10_realize;
qdev: Protect device-list-properties against broken devices Several devices don't survive object_unref(object_new(T)): they crash or hang during cleanup, or they leave dangling pointers behind. This breaks at least device-list-properties, because qmp_device_list_properties() needs to create a device to find its properties. Broken in commit f4eb32b "qmp: show QOM properties in device-list-properties", v2.1. Example reproducer: $ qemu-system-aarch64 -nodefaults -display none -machine none -S -qmp stdio {"QMP": {"version": {"qemu": {"micro": 50, "minor": 4, "major": 2}, "package": ""}, "capabilities": []}} { "execute": "qmp_capabilities" } {"return": {}} { "execute": "device-list-properties", "arguments": { "typename": "pxa2xx-pcmcia" } } qemu-system-aarch64: /home/armbru/work/qemu/memory.c:1307: memory_region_finalize: Assertion `((&mr->subregions)->tqh_first == ((void *)0))' failed. Aborted (core dumped) [Exit 134 (SIGABRT)] Unfortunately, I can't fix the problems in these devices right now. Instead, add DeviceClass member cannot_destroy_with_object_finalize_yet to mark them: * Hang during cleanup (didn't debug, so I can't say why): "realview_pci", "versatile_pci". * Dangling pointer in cpus: most CPUs, plus "allwinner-a10", "digic", "fsl,imx25", "fsl,imx31", "xlnx,zynqmp", because they create such CPUs * Assert kvm_enabled(): "host-x86_64-cpu", host-i386-cpu", "host-powerpc64-cpu", "host-embedded-powerpc-cpu", "host-powerpc-cpu" (the powerpc ones can't currently reach the assertion, because the CPUs are only registered when KVM is enabled, but the assertion is arguably in the wrong place all the same) Make qmp_device_list_properties() fail cleanly when the device is so marked. This improves device-list-properties from "crashes, hangs or leaves dangling pointers behind" to "fails". Not a complete fix, just a better-than-nothing work-around. In the above reproducer, device-list-properties now fails with "Can't list properties of device 'pxa2xx-pcmcia'". This also protects -device FOO,help, which uses the same machinery since commit ef52358 "qdev-monitor: include QOM properties in -device FOO, help output", v2.2. Example reproducer: $ qemu-system-aarch64 -machine none -device pxa2xx-pcmcia,help Before: qemu-system-aarch64: .../memory.c:1307: memory_region_finalize: Assertion `((&mr->subregions)->tqh_first == ((void *)0))' failed. After: Can't list properties of device 'pxa2xx-pcmcia' Cc: "Andreas Färber" <afaerber@suse.de> Cc: "Edgar E. Iglesias" <edgar.iglesias@gmail.com> Cc: Alexander Graf <agraf@suse.de> Cc: Anthony Green <green@moxielogic.com> Cc: Aurelien Jarno <aurelien@aurel32.net> Cc: Bastian Koppelmann <kbastian@mail.uni-paderborn.de> Cc: Blue Swirl <blauwirbel@gmail.com> Cc: Eduardo Habkost <ehabkost@redhat.com> Cc: Guan Xuetao <gxt@mprc.pku.edu.cn> Cc: Jia Liu <proljc@gmail.com> Cc: Leon Alrae <leon.alrae@imgtec.com> Cc: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Michael Walle <michael@walle.cc> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Peter Maydell <peter.maydell@linaro.org> Cc: Richard Henderson <rth@twiddle.net> Cc: qemu-ppc@nongnu.org Cc: qemu-stable@nongnu.org Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eduardo Habkost <ehabkost@redhat.com> Message-Id: <1443689999-12182-10-git-send-email-armbru@redhat.com>
2015-10-01 10:59:58 +02:00
/*
* Reason: creates an ARM CPU, thus use after free(), see
* arm_cpu_class_init()
*/
dc->cannot_destroy_with_object_finalize_yet = true;
}
static const TypeInfo aw_a10_type_info = {
.name = TYPE_AW_A10,
.parent = TYPE_DEVICE,
.instance_size = sizeof(AwA10State),
.instance_init = aw_a10_init,
.class_init = aw_a10_class_init,
};
static void aw_a10_register_types(void)
{
type_register_static(&aw_a10_type_info);
}
type_init(aw_a10_register_types)