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Re: [PATCH 1/4] qom/object: enable setter for uint types
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From: |
Marc-André Lureau |
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Subject: |
Re: [PATCH 1/4] qom/object: enable setter for uint types |
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Date: |
Tue, 26 Nov 2019 16:18:10 +0400 |
Hi
On Tue, Nov 26, 2019 at 4:03 PM Felipe Franciosi <address@hidden> wrote:
>
> Heya
>
> > On Nov 26, 2019, at 8:40 AM, Marc-André Lureau <address@hidden> wrote:
> >
> > Hi
> >
> > On Mon, Nov 25, 2019 at 7:40 PM Felipe Franciosi <address@hidden> wrote:
> >>
> >> Traditionally, the uint-specific property helpers only offer getters.
> >> When adding object (or class) uint types, one must therefore use the
> >> generic property helper if a setter is needed.
> >>
> >> This enhances the uint-specific property helper APIs by adding a
> >> 'readonly' field and modifying all users of that API to set this
> >> parameter to true. If 'readonly' is false, though, the helper will add
> >> an automatic setter for the value.
> >>
> >> Signed-off-by: Felipe Franciosi <address@hidden>
> >> ---
> >> hw/acpi/ich9.c | 4 +-
> >> hw/acpi/pcihp.c | 6 +-
> >> hw/acpi/piix4.c | 12 ++--
> >> hw/isa/lpc_ich9.c | 4 +-
> >> hw/ppc/spapr_drc.c | 2 +-
> >> include/qom/object.h | 28 +++++---
> >> qom/object.c | 152 ++++++++++++++++++++++++++++++++++++-------
> >> ui/console.c | 3 +-
> >> 8 files changed, 163 insertions(+), 48 deletions(-)
> >>
> >> diff --git a/hw/acpi/ich9.c b/hw/acpi/ich9.c
> >> index 2034dd749e..94dc5147ce 100644
> >> --- a/hw/acpi/ich9.c
> >> +++ b/hw/acpi/ich9.c
> >> @@ -454,12 +454,12 @@ void ich9_pm_add_properties(Object *obj,
> >> ICH9LPCPMRegs *pm, Error **errp)
> >> pm->s4_val = 2;
> >>
> >> object_property_add_uint32_ptr(obj, ACPI_PM_PROP_PM_IO_BASE,
> >> - &pm->pm_io_base, errp);
> >> + &pm->pm_io_base, true, errp);
> >> object_property_add(obj, ACPI_PM_PROP_GPE0_BLK, "uint32",
> >> ich9_pm_get_gpe0_blk,
> >> NULL, NULL, pm, NULL);
> >> object_property_add_uint32_ptr(obj, ACPI_PM_PROP_GPE0_BLK_LEN,
> >> - &gpe0_len, errp);
> >> + &gpe0_len, true, errp);
> >> object_property_add_bool(obj, "memory-hotplug-support",
> >> ich9_pm_get_memory_hotplug_support,
> >> ich9_pm_set_memory_hotplug_support,
> >> diff --git a/hw/acpi/pcihp.c b/hw/acpi/pcihp.c
> >> index 8413348a33..70bc1408e6 100644
> >> --- a/hw/acpi/pcihp.c
> >> +++ b/hw/acpi/pcihp.c
> >> @@ -80,7 +80,7 @@ static void *acpi_set_bsel(PCIBus *bus, void *opaque)
> >>
> >> *bus_bsel = (*bsel_alloc)++;
> >> object_property_add_uint32_ptr(OBJECT(bus), ACPI_PCIHP_PROP_BSEL,
> >> - bus_bsel, &error_abort);
> >> + bus_bsel, true, &error_abort);
> >> }
> >>
> >> return bsel_alloc;
> >> @@ -373,9 +373,9 @@ void acpi_pcihp_init(Object *owner, AcpiPciHpState *s,
> >> PCIBus *root_bus,
> >> memory_region_add_subregion(address_space_io, s->io_base, &s->io);
> >>
> >> object_property_add_uint16_ptr(owner, ACPI_PCIHP_IO_BASE_PROP,
> >> &s->io_base,
> >> - &error_abort);
> >> + true, &error_abort);
> >> object_property_add_uint16_ptr(owner, ACPI_PCIHP_IO_LEN_PROP,
> >> &s->io_len,
> >> - &error_abort);
> >> + true, &error_abort);
> >> }
> >>
> >> const VMStateDescription vmstate_acpi_pcihp_pci_status = {
> >> diff --git a/hw/acpi/piix4.c b/hw/acpi/piix4.c
> >> index 93aec2dd2c..032ba11e62 100644
> >> --- a/hw/acpi/piix4.c
> >> +++ b/hw/acpi/piix4.c
> >> @@ -443,17 +443,17 @@ static void piix4_pm_add_propeties(PIIX4PMState *s)
> >> static const uint16_t sci_int = 9;
> >>
> >> object_property_add_uint8_ptr(OBJECT(s), ACPI_PM_PROP_ACPI_ENABLE_CMD,
> >> - &acpi_enable_cmd, NULL);
> >> + &acpi_enable_cmd, true, NULL);
> >> object_property_add_uint8_ptr(OBJECT(s), ACPI_PM_PROP_ACPI_DISABLE_CMD,
> >> - &acpi_disable_cmd, NULL);
> >> + &acpi_disable_cmd, true, NULL);
> >> object_property_add_uint32_ptr(OBJECT(s), ACPI_PM_PROP_GPE0_BLK,
> >> - &gpe0_blk, NULL);
> >> + &gpe0_blk, true, NULL);
> >> object_property_add_uint32_ptr(OBJECT(s), ACPI_PM_PROP_GPE0_BLK_LEN,
> >> - &gpe0_blk_len, NULL);
> >> + &gpe0_blk_len, true, NULL);
> >> object_property_add_uint16_ptr(OBJECT(s), ACPI_PM_PROP_SCI_INT,
> >> - &sci_int, NULL);
> >> + &sci_int, true, NULL);
> >> object_property_add_uint32_ptr(OBJECT(s), ACPI_PM_PROP_PM_IO_BASE,
> >> - &s->io_base, NULL);
> >> + &s->io_base, true, NULL);
> >> }
> >>
> >> static void piix4_pm_realize(PCIDevice *dev, Error **errp)
> >> diff --git a/hw/isa/lpc_ich9.c b/hw/isa/lpc_ich9.c
> >> index 17c292e306..5555ce3342 100644
> >> --- a/hw/isa/lpc_ich9.c
> >> +++ b/hw/isa/lpc_ich9.c
> >> @@ -645,9 +645,9 @@ static void ich9_lpc_add_properties(ICH9LPCState *lpc)
> >> ich9_lpc_get_sci_int,
> >> NULL, NULL, NULL, NULL);
> >> object_property_add_uint8_ptr(OBJECT(lpc),
> >> ACPI_PM_PROP_ACPI_ENABLE_CMD,
> >> - &acpi_enable_cmd, NULL);
> >> + &acpi_enable_cmd, true, NULL);
> >> object_property_add_uint8_ptr(OBJECT(lpc),
> >> ACPI_PM_PROP_ACPI_DISABLE_CMD,
> >> - &acpi_disable_cmd, NULL);
> >> + &acpi_disable_cmd, true, NULL);
> >>
> >> ich9_pm_add_properties(OBJECT(lpc), &lpc->pm, NULL);
> >> }
> >> diff --git a/hw/ppc/spapr_drc.c b/hw/ppc/spapr_drc.c
> >> index 62f1a42592..76f389f56a 100644
> >> --- a/hw/ppc/spapr_drc.c
> >> +++ b/hw/ppc/spapr_drc.c
> >> @@ -553,7 +553,7 @@ static void spapr_dr_connector_instance_init(Object
> >> *obj)
> >> SpaprDrc *drc = SPAPR_DR_CONNECTOR(obj);
> >> SpaprDrcClass *drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc);
> >>
> >> - object_property_add_uint32_ptr(obj, "id", &drc->id, NULL);
> >> + object_property_add_uint32_ptr(obj, "id", &drc->id, true, NULL);
> >> object_property_add(obj, "index", "uint32", prop_get_index,
> >> NULL, NULL, NULL, NULL);
> >> object_property_add(obj, "fdt", "struct", prop_get_fdt,
> >> diff --git a/include/qom/object.h b/include/qom/object.h
> >> index 128d00c77f..8fc28ed0c9 100644
> >> --- a/include/qom/object.h
> >> +++ b/include/qom/object.h
> >> @@ -1584,60 +1584,72 @@ void object_class_property_add_tm(ObjectClass
> >> *klass, const char *name,
> >> * @obj: the object to add a property to
> >> * @name: the name of the property
> >> * @v: pointer to value
> >> + * @readonly: don't add setter for value
> >> * @errp: if an error occurs, a pointer to an area to store the error
> >> *
> >> * Add an integer property in memory. This function will add a
> >> * property of type 'uint8'.
> >> */
> >> void object_property_add_uint8_ptr(Object *obj, const char *name,
> >> - const uint8_t *v, Error **errp);
> >> + const uint8_t *v, bool readonly,
> >> + Error **errp);
> >> void object_class_property_add_uint8_ptr(ObjectClass *klass, const char
> >> *name,
> >> - const uint8_t *v, Error **errp);
> >> + const uint8_t *v, bool readonly,
> >> + Error **errp);
> >
> > It would help readability and extensibility if we had an enum/bitflag:
> > OBJECT_PROP_WRITABLE, OBJECT_PROP_READABLE (& OBJECT_PROP_READWRITE
> > alias).
>
> I quite like your suggestion. When going through the various clients
> of these, I found that many of them do not accept a zero value on the
> setter. I didn't include them on this series, but if we had an
> OBJ_PROP_REJECT_ZERO_VAL (or similar), we could take them in the
> generic setters as well. Let me have a stab at that on the v2.
Hmm, that's a bit more involved.
I would introduce min/max ranges instead. Let's not do that now.
>
> >
> >>
> >> /**
> >> * object_property_add_uint16_ptr:
> >> * @obj: the object to add a property to
> >> * @name: the name of the property
> >> * @v: pointer to value
> >> + * @readonly: don't add setter for value
> >> * @errp: if an error occurs, a pointer to an area to store the error
> >> *
> >> * Add an integer property in memory. This function will add a
> >> * property of type 'uint16'.
> >> */
> >> void object_property_add_uint16_ptr(Object *obj, const char *name,
> >> - const uint16_t *v, Error **errp);
> >> + const uint16_t *v, bool readonly,
> >> + Error **errp);
> >> void object_class_property_add_uint16_ptr(ObjectClass *klass, const char
> >> *name,
> >> - const uint16_t *v, Error
> >> **errp);
> >> + const uint16_t *v, bool
> >> readonly,
> >> + Error **errp);
> >>
> >> /**
> >> * object_property_add_uint32_ptr:
> >> * @obj: the object to add a property to
> >> * @name: the name of the property
> >> * @v: pointer to value
> >> + * @readonly: don't add setter for value
> >> * @errp: if an error occurs, a pointer to an area to store the error
> >> *
> >> * Add an integer property in memory. This function will add a
> >> * property of type 'uint32'.
> >> */
> >> void object_property_add_uint32_ptr(Object *obj, const char *name,
> >> - const uint32_t *v, Error **errp);
> >> + const uint32_t *v, bool readonly,
> >> + Error **errp);
> >> void object_class_property_add_uint32_ptr(ObjectClass *klass, const char
> >> *name,
> >> - const uint32_t *v, Error
> >> **errp);
> >> + const uint32_t *v, bool
> >> readonly,
> >> + Error **errp);
> >>
> >> /**
> >> * object_property_add_uint64_ptr:
> >> * @obj: the object to add a property to
> >> * @name: the name of the property
> >> * @v: pointer to value
> >> + * @readonly: don't add setter for value
> >> * @errp: if an error occurs, a pointer to an area to store the error
> >> *
> >> * Add an integer property in memory. This function will add a
> >> * property of type 'uint64'.
> >> */
> >> void object_property_add_uint64_ptr(Object *obj, const char *name,
> >> - const uint64_t *v, Error **Errp);
> >> + const uint64_t *v, bool readonly,
> >> + Error **Errp);
> >> void object_class_property_add_uint64_ptr(ObjectClass *klass, const char
> >> *name,
> >> - const uint64_t *v, Error
> >> **Errp);
> >> + const uint64_t *v, bool
> >> readonly,
> >> + Error **Errp);
> >>
> >> /**
> >> * object_property_add_alias:
> >> diff --git a/qom/object.c b/qom/object.c
> >> index d51b57fba1..775f702465 100644
> >> --- a/qom/object.c
> >> +++ b/qom/object.c
> >> @@ -2326,6 +2326,26 @@ static void property_get_uint8_ptr(Object *obj,
> >> Visitor *v, const char *name,
> >> visit_type_uint8(v, name, &value, errp);
> >> }
> >>
> >> +static void property_set_uint8_ptr(Object *obj, Visitor *v, const char
> >> *name,
> >> + void *opaque, Error **errp)
> >> +{
> >> + uint8_t *field = opaque;
> >> + uint8_t value;
> >> + Error *local_err = NULL;
> >> +
> >> + visit_type_uint8(v, name, &value, &local_err);
> >> + if (local_err) {
> >> + goto err;
> >> + }
> >> +
> >> + *field = value;
> >> +
> >> + return;
> >> +
> >> +err:
> >> + error_propagate(errp, local_err);
> >> +}
> >
> >
> > This is probably going to be refactored once the auto error series
> > land. But in the meantime, it would be nice to remove the goto label.
>
> I have just mimicked what other code does. Do you prefer the
> error_propagate + return within the if()? I think I do.
Ok, I didn't look at existing code. Up to you
>
> F.
>
> >
> >> +
> >> static void property_get_uint16_ptr(Object *obj, Visitor *v, const char
> >> *name,
> >> void *opaque, Error **errp)
> >> {
> >> @@ -2333,6 +2353,26 @@ static void property_get_uint16_ptr(Object *obj,
> >> Visitor *v, const char *name,
> >> visit_type_uint16(v, name, &value, errp);
> >> }
> >>
> >> +static void property_set_uint16_ptr(Object *obj, Visitor *v, const char
> >> *name,
> >> + void *opaque, Error **errp)
> >> +{
> >> + uint16_t *field = opaque;
> >> + uint16_t value;
> >> + Error *local_err = NULL;
> >> +
> >> + visit_type_uint16(v, name, &value, &local_err);
> >> + if (local_err) {
> >> + goto err;
> >> + }
> >> +
> >> + *field = value;
> >> +
> >> + return;
> >> +
> >> +err:
> >> + error_propagate(errp, local_err);
> >> +}
> >> +
> >
> > same
> >
> >> static void property_get_uint32_ptr(Object *obj, Visitor *v, const char
> >> *name,
> >> void *opaque, Error **errp)
> >> {
> >> @@ -2340,6 +2380,26 @@ static void property_get_uint32_ptr(Object *obj,
> >> Visitor *v, const char *name,
> >> visit_type_uint32(v, name, &value, errp);
> >> }
> >>
> >> +static void property_set_uint32_ptr(Object *obj, Visitor *v, const char
> >> *name,
> >> + void *opaque, Error **errp)
> >> +{
> >> + uint32_t *field = opaque;
> >> + uint32_t value;
> >> + Error *local_err = NULL;
> >> +
> >> + visit_type_uint32(v, name, &value, &local_err);
> >> + if (local_err) {
> >> + goto err;
> >> + }
> >> +
> >> + *field = value;
> >> +
> >> + return;
> >> +
> >> +err:
> >> + error_propagate(errp, local_err);
> >> +}
> >
> > etc
> >
> >> +
> >> static void property_get_uint64_ptr(Object *obj, Visitor *v, const char
> >> *name,
> >> void *opaque, Error **errp)
> >> {
> >> @@ -2347,60 +2407,104 @@ static void property_get_uint64_ptr(Object *obj,
> >> Visitor *v, const char *name,
> >> visit_type_uint64(v, name, &value, errp);
> >> }
> >>
> >> +static void property_set_uint64_ptr(Object *obj, Visitor *v, const char
> >> *name,
> >> + void *opaque, Error **errp)
> >> +{
> >> + uint64_t *field = opaque;
> >> + uint64_t value;
> >> + Error *local_err = NULL;
> >> +
> >> + visit_type_uint64(v, name, &value, &local_err);
> >> + if (local_err) {
> >> + goto err;
> >> + }
> >> +
> >> + *field = value;
> >> +
> >> + return;
> >> +
> >> +err:
> >> + error_propagate(errp, local_err);
> >> +}
> >> +
> >> void object_property_add_uint8_ptr(Object *obj, const char *name,
> >> - const uint8_t *v, Error **errp)
> >> + const uint8_t *v, bool readonly,
> >> + Error **errp)
> >> {
> >> - object_property_add(obj, name, "uint8", property_get_uint8_ptr,
> >> - NULL, NULL, (void *)v, errp);
> >> + object_property_add(obj, name, "uint8",
> >> + property_get_uint8_ptr,
> >> + readonly ? NULL : property_set_uint8_ptr,
> >> + NULL, (void *)v, errp);
> >> }
> >>
> >> void object_class_property_add_uint8_ptr(ObjectClass *klass, const char
> >> *name,
> >> - const uint8_t *v, Error **errp)
> >> + const uint8_t *v, bool readonly,
> >> + Error **errp)
> >> {
> >> - object_class_property_add(klass, name, "uint8",
> >> property_get_uint8_ptr,
> >> - NULL, NULL, (void *)v, errp);
> >> + object_class_property_add(klass, name, "uint8",
> >> + property_get_uint8_ptr,
> >> + readonly ? NULL : property_set_uint8_ptr,
> >> + NULL, (void *)v, errp);
> >> }
> >>
> >> void object_property_add_uint16_ptr(Object *obj, const char *name,
> >> - const uint16_t *v, Error **errp)
> >> + const uint16_t *v, bool readonly,
> >> + Error **errp)
> >> {
> >> - object_property_add(obj, name, "uint16", property_get_uint16_ptr,
> >> - NULL, NULL, (void *)v, errp);
> >> + object_property_add(obj, name, "uint16",
> >> + property_get_uint16_ptr,
> >> + readonly ? NULL : property_set_uint16_ptr,
> >> + NULL, (void *)v, errp);
> >> }
> >>
> >> void object_class_property_add_uint16_ptr(ObjectClass *klass, const char
> >> *name,
> >> - const uint16_t *v, Error **errp)
> >> + const uint16_t *v, bool
> >> readonly,
> >> + Error **errp)
> >> {
> >> - object_class_property_add(klass, name, "uint16",
> >> property_get_uint16_ptr,
> >> - NULL, NULL, (void *)v, errp);
> >> + object_class_property_add(klass, name, "uint16",
> >> + property_get_uint16_ptr,
> >> + readonly ? NULL : property_set_uint16_ptr,
> >> + NULL, (void *)v, errp);
> >> }
> >>
> >> void object_property_add_uint32_ptr(Object *obj, const char *name,
> >> - const uint32_t *v, Error **errp)
> >> + const uint32_t *v, bool readonly,
> >> + Error **errp)
> >> {
> >> - object_property_add(obj, name, "uint32", property_get_uint32_ptr,
> >> - NULL, NULL, (void *)v, errp);
> >> + object_property_add(obj, name, "uint32",
> >> + property_get_uint32_ptr,
> >> + readonly ? NULL : property_set_uint32_ptr,
> >> + NULL, (void *)v, errp);
> >> }
> >>
> >> void object_class_property_add_uint32_ptr(ObjectClass *klass, const char
> >> *name,
> >> - const uint32_t *v, Error **errp)
> >> + const uint32_t *v, bool
> >> readonly,
> >> + Error **errp)
> >> {
> >> - object_class_property_add(klass, name, "uint32",
> >> property_get_uint32_ptr,
> >> - NULL, NULL, (void *)v, errp);
> >> + object_class_property_add(klass, name, "uint32",
> >> + property_get_uint32_ptr,
> >> + readonly ? NULL : property_set_uint32_ptr,
> >> + NULL, (void *)v, errp);
> >> }
> >>
> >> void object_property_add_uint64_ptr(Object *obj, const char *name,
> >> - const uint64_t *v, Error **errp)
> >> + const uint64_t *v, bool readonly,
> >> + Error **errp)
> >> {
> >> - object_property_add(obj, name, "uint64", property_get_uint64_ptr,
> >> - NULL, NULL, (void *)v, errp);
> >> + object_property_add(obj, name, "uint64",
> >> + property_get_uint64_ptr,
> >> + property_set_uint64_ptr,
> >> + NULL, (void *)v, errp);
> >> }
> >>
> >> void object_class_property_add_uint64_ptr(ObjectClass *klass, const char
> >> *name,
> >> - const uint64_t *v, Error **errp)
> >> + const uint64_t *v, bool
> >> readonly,
> >> + Error **errp)
> >> {
> >> - object_class_property_add(klass, name, "uint64",
> >> property_get_uint64_ptr,
> >> - NULL, NULL, (void *)v, errp);
> >> + object_class_property_add(klass, name, "uint64",
> >> + property_get_uint64_ptr,
> >> + readonly ? NULL : property_set_uint64_ptr,
> >> + NULL, (void *)v, errp);
> >> }
> >>
> >> typedef struct {
> >> diff --git a/ui/console.c b/ui/console.c
> >> index 82d1ddac9c..3375c33d71 100644
> >> --- a/ui/console.c
> >> +++ b/ui/console.c
> >> @@ -1296,8 +1296,7 @@ static QemuConsole *new_console(DisplayState *ds,
> >> console_type_t console_type,
> >> object_property_allow_set_link,
> >> OBJ_PROP_LINK_STRONG,
> >> &error_abort);
> >> - object_property_add_uint32_ptr(obj, "head",
> >> - &s->head, &error_abort);
> >> + object_property_add_uint32_ptr(obj, "head", &s->head, true,
> >> &error_abort);
> >>
> >> if (!active_console || ((active_console->console_type !=
> >> GRAPHIC_CONSOLE) &&
> >> (console_type == GRAPHIC_CONSOLE))) {
> >> --
> >> 2.20.1
> >>
> >
> > looks good otherwise
> >
> >
> > --
> > Marc-André Lureau
>
--
Marc-André Lureau
[PATCH 3/4] ich9: Simplify ich9_lpc_initfn, Felipe Franciosi, 2019/11/25
[PATCH 4/4] qom/object: Use common get/set uint helpers, Felipe Franciosi, 2019/11/25