Re: [Qemu-devel] [PATCH V7 3/6] hw/misc/pvpanic: Add the MMIO interface
On 16 November 2018 at 10:50, Peng Hao wrote:
> Add pvpanic new type "TYPE_PVPANIC_MMIO"
>
> Signed-off-by: Peng Hao
> Signed-off-by: Philippe Mathieu-Daudé
I'm not entirely sure I understand why we have two
signed-off-by lines here -- who is the author of this patch?
> ---
> hw/misc/pvpanic.c | 81
> +--
> include/hw/misc/pvpanic.h | 1 +
> 2 files changed, 65 insertions(+), 17 deletions(-)
>
> diff --git a/hw/misc/pvpanic.c b/hw/misc/pvpanic.c
> index dd3aef2..5d0fbc6 100644
> --- a/hw/misc/pvpanic.c
> +++ b/hw/misc/pvpanic.c
> @@ -2,10 +2,12 @@
> * QEMU simulated pvpanic device.
> *
> * Copyright Fujitsu, Corp. 2013
> + * Copyright (c) 2018 ZTE Ltd.
> *
> * Authors:
> * Wen Congyang
> * Hu Tao
> + * Peng Hao
> *
> * This work is licensed under the terms of the GNU GPL, version 2 or later.
> * See the COPYING file in the top-level directory.
> @@ -25,9 +27,6 @@
> /* The pv event value */
> #define PVPANIC_PANICKED(1 << PVPANIC_F_PANICKED)
>
> -#define PVPANIC(obj)\
> -OBJECT_CHECK(PVPanicState, (obj), TYPE_PVPANIC)
> -
We just added (renamed) this macro in the previous patch:
has something gone wrong in a rebase ?
> static void handle_event(int event)
> {
> static bool logged;
> @@ -45,30 +44,50 @@ static void handle_event(int event)
>
> #include "hw/isa/isa.h"
>
> -typedef struct PVPanicState {
> -/* private */
> -ISADevice isadev;
> +/* PVPanicISAState for ISA device and
> + * use ioport.
> + */
> +typedef struct PVPanicISAState {
> + /* private */
> + ISADevice isadev;
This should be "ISADevice parent_obj;" and go above the /* private */
comment, because a PVPanicISAState is-a ISADevice (this is not
a has-a relation).
Again, this seems to be undoing changes from the previous patch
somewhat ?
> + uint16_t ioport;
>
> /* public */
> MemoryRegion mr;
> -uint16_t ioport;
> -} PVPanicState;
> +} PVPanicISAState;
> +
> +/* PVPanicMMIOState for sysbus device and
> + * use mmio.
> + */
> +typedef struct PVPanicMMIOState {
> +/* private */
> +SysBusDevice busdev;
> +
> + /* public */
> +MemoryRegion mr;
> +} PVPanicMMIOState;
> +
> +#define PVPANIC_ISA(obj)\
> +OBJECT_CHECK(PVPanicISAState, (obj), TYPE_PVPANIC)
> +
> +#define PVPANIC_MMIO(obj)\
> +OBJECT_CHECK(PVPanicMMIOState, (obj), TYPE_PVPANIC_MMIO)
>
> /* return supported events on read */
> -static uint64_t pvpanic_ioport_read(void *opaque, hwaddr addr, unsigned size)
> +static uint64_t pvpanic_read(void *opaque, hwaddr addr, unsigned size)
> {
> return PVPANIC_PANICKED;
> }
>
> -static void pvpanic_ioport_write(void *opaque, hwaddr addr, uint64_t val,
> +static void pvpanic_write(void *opaque, hwaddr addr, uint64_t val,
> unsigned size)
> {
> handle_event(val);
> }
>
> static const MemoryRegionOps pvpanic_ops = {
> -.read = pvpanic_ioport_read,
> -.write = pvpanic_ioport_write,
> +.read = pvpanic_read,
> +.write = pvpanic_write,
> .impl = {
> .min_access_size = 1,
> .max_access_size = 1,
> @@ -77,15 +96,16 @@ static const MemoryRegionOps pvpanic_ops = {
>
> static void pvpanic_isa_initfn(Object *obj)
> {
> -PVPanicState *s = PVPANIC(obj);
> +PVPanicISAState *s = PVPANIC_ISA(obj);
>
> -memory_region_init_io(>mr, OBJECT(s), _ops, s, "pvpanic", 1);
> +memory_region_init_io(>mr, OBJECT(s), _ops, s,
> + TYPE_PVPANIC, 1);
> }
>
> static void pvpanic_isa_realizefn(DeviceState *dev, Error **errp)
> {
> ISADevice *d = ISA_DEVICE(dev);
> -PVPanicState *s = PVPANIC(dev);
> +PVPanicISAState *s = PVPANIC_ISA(dev);
> FWCfgState *fw_cfg = fw_cfg_find();
> uint16_t *pvpanic_port;
>
> @@ -102,7 +122,7 @@ static void pvpanic_isa_realizefn(DeviceState *dev, Error
> **errp)
> }
>
> static Property pvpanic_isa_properties[] = {
> -DEFINE_PROP_UINT16(PVPANIC_IOPORT_PROP, PVPanicState, ioport, 0x505),
> +DEFINE_PROP_UINT16(PVPANIC_IOPORT_PROP, PVPanicISAState, ioport, 0x505),
> DEFINE_PROP_END_OF_LIST(),
> };
>
> @@ -118,14 +138,41 @@ static void pvpanic_isa_class_init(ObjectClass *klass,
> void *data)
> static TypeInfo pvpanic_isa_info = {
> .name = TYPE_PVPANIC,
> .parent= TYPE_ISA_DEVICE,
> -.instance_size = sizeof(PVPanicState),
> +.instance_size = sizeof(PVPanicISAState),
> .instance_init = pvpanic_isa_initfn,
> .class_init= pvpanic_isa_class_init,
> };
>
> +
> +static void pvpanic_mmio_initfn(Object *obj)
> +{
> +PVPanicMMIOState *s = PVPANIC_MMIO(obj);
> +SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
> +
> +memory_region_init_io(>mr, OBJECT(s), _ops, s,
> + TYPE_PVPANIC_MMIO, 2);
> +sysbus_init_mmio(sbd, >mr);
> +}
> +
> +static void pvpanic_mmio_class_init(ObjectClass *klass, void *data)
> +{
> +DeviceClass *dc =
[Qemu-devel] [PATCH V7 3/6] hw/misc/pvpanic: Add the MMIO interface
Add pvpanic new type "TYPE_PVPANIC_MMIO"
Signed-off-by: Peng Hao
Signed-off-by: Philippe Mathieu-Daudé
---
hw/misc/pvpanic.c | 81 +--
include/hw/misc/pvpanic.h | 1 +
2 files changed, 65 insertions(+), 17 deletions(-)
diff --git a/hw/misc/pvpanic.c b/hw/misc/pvpanic.c
index dd3aef2..5d0fbc6 100644
--- a/hw/misc/pvpanic.c
+++ b/hw/misc/pvpanic.c
@@ -2,10 +2,12 @@
* QEMU simulated pvpanic device.
*
* Copyright Fujitsu, Corp. 2013
+ * Copyright (c) 2018 ZTE Ltd.
*
* Authors:
* Wen Congyang
* Hu Tao
+ * Peng Hao
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
@@ -25,9 +27,6 @@
/* The pv event value */
#define PVPANIC_PANICKED(1 << PVPANIC_F_PANICKED)
-#define PVPANIC(obj)\
-OBJECT_CHECK(PVPanicState, (obj), TYPE_PVPANIC)
-
static void handle_event(int event)
{
static bool logged;
@@ -45,30 +44,50 @@ static void handle_event(int event)
#include "hw/isa/isa.h"
-typedef struct PVPanicState {
-/* private */
-ISADevice isadev;
+/* PVPanicISAState for ISA device and
+ * use ioport.
+ */
+typedef struct PVPanicISAState {
+ /* private */
+ ISADevice isadev;
+ uint16_t ioport;
/* public */
MemoryRegion mr;
-uint16_t ioport;
-} PVPanicState;
+} PVPanicISAState;
+
+/* PVPanicMMIOState for sysbus device and
+ * use mmio.
+ */
+typedef struct PVPanicMMIOState {
+/* private */
+SysBusDevice busdev;
+
+ /* public */
+MemoryRegion mr;
+} PVPanicMMIOState;
+
+#define PVPANIC_ISA(obj)\
+OBJECT_CHECK(PVPanicISAState, (obj), TYPE_PVPANIC)
+
+#define PVPANIC_MMIO(obj)\
+OBJECT_CHECK(PVPanicMMIOState, (obj), TYPE_PVPANIC_MMIO)
/* return supported events on read */
-static uint64_t pvpanic_ioport_read(void *opaque, hwaddr addr, unsigned size)
+static uint64_t pvpanic_read(void *opaque, hwaddr addr, unsigned size)
{
return PVPANIC_PANICKED;
}
-static void pvpanic_ioport_write(void *opaque, hwaddr addr, uint64_t val,
+static void pvpanic_write(void *opaque, hwaddr addr, uint64_t val,
unsigned size)
{
handle_event(val);
}
static const MemoryRegionOps pvpanic_ops = {
-.read = pvpanic_ioport_read,
-.write = pvpanic_ioport_write,
+.read = pvpanic_read,
+.write = pvpanic_write,
.impl = {
.min_access_size = 1,
.max_access_size = 1,
@@ -77,15 +96,16 @@ static const MemoryRegionOps pvpanic_ops = {
static void pvpanic_isa_initfn(Object *obj)
{
-PVPanicState *s = PVPANIC(obj);
+PVPanicISAState *s = PVPANIC_ISA(obj);
-memory_region_init_io(>mr, OBJECT(s), _ops, s, "pvpanic", 1);
+memory_region_init_io(>mr, OBJECT(s), _ops, s,
+ TYPE_PVPANIC, 1);
}
static void pvpanic_isa_realizefn(DeviceState *dev, Error **errp)
{
ISADevice *d = ISA_DEVICE(dev);
-PVPanicState *s = PVPANIC(dev);
+PVPanicISAState *s = PVPANIC_ISA(dev);
FWCfgState *fw_cfg = fw_cfg_find();
uint16_t *pvpanic_port;
@@ -102,7 +122,7 @@ static void pvpanic_isa_realizefn(DeviceState *dev, Error
**errp)
}
static Property pvpanic_isa_properties[] = {
-DEFINE_PROP_UINT16(PVPANIC_IOPORT_PROP, PVPanicState, ioport, 0x505),
+DEFINE_PROP_UINT16(PVPANIC_IOPORT_PROP, PVPanicISAState, ioport, 0x505),
DEFINE_PROP_END_OF_LIST(),
};
@@ -118,14 +138,41 @@ static void pvpanic_isa_class_init(ObjectClass *klass,
void *data)
static TypeInfo pvpanic_isa_info = {
.name = TYPE_PVPANIC,
.parent= TYPE_ISA_DEVICE,
-.instance_size = sizeof(PVPanicState),
+.instance_size = sizeof(PVPanicISAState),
.instance_init = pvpanic_isa_initfn,
.class_init= pvpanic_isa_class_init,
};
+
+static void pvpanic_mmio_initfn(Object *obj)
+{
+PVPanicMMIOState *s = PVPANIC_MMIO(obj);
+SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
+
+memory_region_init_io(>mr, OBJECT(s), _ops, s,
+ TYPE_PVPANIC_MMIO, 2);
+sysbus_init_mmio(sbd, >mr);
+}
+
+static void pvpanic_mmio_class_init(ObjectClass *klass, void *data)
+{
+DeviceClass *dc = DEVICE_CLASS(klass);
+
+set_bit(DEVICE_CATEGORY_MISC, dc->categories);
+}
+
+static TypeInfo pvpanic_mmio_info = {
+.name = TYPE_PVPANIC_MMIO,
+.parent= TYPE_SYS_BUS_DEVICE,
+.instance_size = sizeof(PVPanicMMIOState),
+.instance_init = pvpanic_mmio_initfn,
+.class_init= pvpanic_mmio_class_init,
+};
+
static void pvpanic_register_types(void)
{
type_register_static(_isa_info);
+type_register_static(_mmio_info);
}
type_init(pvpanic_register_types)
diff --git a/include/hw/misc/pvpanic.h b/include/hw/misc/pvpanic.h
index 1ee071a..19c0fbb 100644
--- a/include/hw/misc/pvpanic.h
+++ b/include/hw/misc/pvpanic.h
@@ -17,6 +17,7 @@
#define TYPE_PVPANIC "pvpanic"
#define PVPANIC_IOPORT_PROP "ioport"
+#define
