[Qemu-devel] [PATCH v3 0/2] Drop support for qdev taddr properties

[Qemu-devel] [PATCH v3 0/2] Drop support for qdev taddr properties

[Peter Maydell]

There is currently only one user of the qdev taddr (target addr,
now hwaddr) property code, and that user is wrong anyway, since the
property it's trying to set isn't actually a taddr property.
Fix the erroneous use in sm501 and drop all the taddr property code.

The justification for dropping the support is that a device should
generally not be exposing properties whose width (conceptually)
depends on the target CPU type. (This is the same rationale for
not supporting hwaddr fields in migration state.) Instead the
device should expose either a 32 bit or 64 bit property, depending
on what the actual hardware does.

Changes v2->v3:
 * rebased and fixed trivial textual conflict in xilinx_axidma.c
Changes v1->v2:
 * no functional changes, just rebased since Paolo's moved
   everything around and the old patches won't apply

Peter Maydell (2):
  hw/sm501: Use correct setter for sysbus-ohci dma-address property
  qdev: Drop taddr properties

 hw/block/fdc.c              |    1 -
 hw/core/Makefile.objs       |    1 -
 hw/core/qdev-addr.c         |   78 -------------------------------------------
 hw/display/sm501.c          |    3 +-
 hw/display/tcx.c            |    1 -
 hw/dma/xilinx_axidma.c      |    1 -
 hw/lm32/milkymist-hw.h      |    1 -
 hw/net/milkymist-minimac2.c |    1 -
 hw/sparc/sun4m.c            |    1 -
 include/hw/qdev-addr.h      |   10 ------
 10 files changed, 1 insertion(+), 97 deletions(-)
 delete mode 100644 hw/core/qdev-addr.c
 delete mode 100644 include/hw/qdev-addr.h

-- 
1.7.9.5

[Qemu-devel] [PATCH v3 1/2] hw/sm501: Use correct setter for sysbus-ohci dma-address property

[Peter Maydell]

The sysbus-ohci dma-address property is declared as a HEX64
property, not a TADDR, so use the correct setter for it.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Acked-by: Andreas Färber <afaerber@suse.de>
Tested-by: Aurelien Jarno <aurelien@aurel32.net>
---
 hw/display/sm501.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hw/display/sm501.c b/hw/display/sm501.c
index f0e6d70..fc5e539 100644
--- a/hw/display/sm501.c
+++ b/hw/display/sm501.c
@@ -1434,7 +1434,7 @@ void sm501_init(MemoryRegion *address_space_mem, uint32_t base,
     /* bridge to usb host emulation module */
     dev = qdev_create(NULL, "sysbus-ohci");
     qdev_prop_set_uint32(dev, "num-ports", 2);
-    qdev_prop_set_taddr(dev, "dma-offset", base);
+    qdev_prop_set_uint64(dev, "dma-offset", base);
     qdev_init_nofail(dev);
     sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0,
                     base + MMIO_BASE_OFFSET + SM501_USB_HOST);
-- 
1.7.9.5

[Qemu-devel] [PATCH v3 2/2] qdev: Drop taddr properties

[Peter Maydell]

Drop all the infrastructure for taddr properties (ie ones which
are 'hwaddr' sized). These are now unused, and any further desired
use would be rather questionable since device properties shouldn't
generally depend on a type that is conceptually variable based on
the target CPU. 32 or 64 bit integer properties should be used instead
as appropriate for the specific device.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 hw/block/fdc.c              |    1 -
 hw/core/Makefile.objs       |    1 -
 hw/core/qdev-addr.c         |   78 -------------------------------------------
 hw/display/sm501.c          |    1 -
 hw/display/tcx.c            |    1 -
 hw/dma/xilinx_axidma.c      |    1 -
 hw/lm32/milkymist-hw.h      |    1 -
 hw/net/milkymist-minimac2.c |    1 -
 hw/sparc/sun4m.c            |    1 -
 include/hw/qdev-addr.h      |   10 ------
 10 files changed, 96 deletions(-)
 delete mode 100644 hw/core/qdev-addr.c
 delete mode 100644 include/hw/qdev-addr.h

diff --git a/hw/block/fdc.c b/hw/block/fdc.c
index 1ed874f..f1f1fd7 100644
--- a/hw/block/fdc.c
+++ b/hw/block/fdc.c
@@ -33,7 +33,6 @@
 #include "qemu/timer.h"
 #include "hw/isa/isa.h"
 #include "hw/sysbus.h"
-#include "hw/qdev-addr.h"
 #include "sysemu/blockdev.h"
 #include "sysemu/sysemu.h"
 #include "qemu/log.h"
diff --git a/hw/core/Makefile.objs b/hw/core/Makefile.objs
index 94109f3..950146c 100644
--- a/hw/core/Makefile.objs
+++ b/hw/core/Makefile.objs
@@ -9,6 +9,5 @@ common-obj-$(CONFIG_PTIMER) += ptimer.o
 common-obj-$(CONFIG_SOFTMMU) += sysbus.o
 common-obj-$(CONFIG_SOFTMMU) += null-machine.o
 common-obj-$(CONFIG_SOFTMMU) += loader.o
-common-obj-$(CONFIG_SOFTMMU) += qdev-addr.o
 common-obj-$(CONFIG_SOFTMMU) += qdev-properties-system.o
 
diff --git a/hw/core/qdev-addr.c b/hw/core/qdev-addr.c
deleted file mode 100644
index 80a38bb..0000000
--- a/hw/core/qdev-addr.c
+++ /dev/null
@@ -1,78 +0,0 @@
-#include "hw/qdev.h"
-#include "hw/qdev-addr.h"
-#include "exec/hwaddr.h"
-#include "qapi/qmp/qerror.h"
-#include "qapi/visitor.h"
-
-/* --- target physical address --- */
-
-static int parse_taddr(DeviceState *dev, Property *prop, const char *str)
-{
-    hwaddr *ptr = qdev_get_prop_ptr(dev, prop);
-
-    *ptr = strtoull(str, NULL, 16);
-    return 0;
-}
-
-static int print_taddr(DeviceState *dev, Property *prop, char *dest, size_t len)
-{
-    hwaddr *ptr = qdev_get_prop_ptr(dev, prop);
-    return snprintf(dest, len, "0x" TARGET_FMT_plx, *ptr);
-}
-
-static void get_taddr(Object *obj, Visitor *v, void *opaque,
-                      const char *name, Error **errp)
-{
-    DeviceState *dev = DEVICE(obj);
-    Property *prop = opaque;
-    hwaddr *ptr = qdev_get_prop_ptr(dev, prop);
-    int64_t value;
-
-    value = *ptr;
-    visit_type_int64(v, &value, name, errp);
-}
-
-static void set_taddr(Object *obj, Visitor *v, void *opaque,
-                      const char *name, Error **errp)
-{
-    DeviceState *dev = DEVICE(obj);
-    Property *prop = opaque;
-    hwaddr *ptr = qdev_get_prop_ptr(dev, prop);
-    Error *local_err = NULL;
-    int64_t value;
-
-    if (dev->realized) {
-        qdev_prop_set_after_realize(dev, name, errp);
-        return;
-    }
-
-    visit_type_int64(v, &value, name, &local_err);
-    if (local_err) {
-        error_propagate(errp, local_err);
-        return;
-    }
-    if ((uint64_t)value <= (uint64_t) ~(hwaddr)0) {
-        *ptr = value;
-    } else {
-        error_set(errp, QERR_PROPERTY_VALUE_OUT_OF_RANGE,
-                  dev->id?:"", name, value, (uint64_t) 0,
-                  (uint64_t) ~(hwaddr)0);
-    }
-}
-
-
-PropertyInfo qdev_prop_taddr = {
-    .name  = "taddr",
-    .parse = parse_taddr,
-    .print = print_taddr,
-    .get   = get_taddr,
-    .set   = set_taddr,
-};
-
-void qdev_prop_set_taddr(DeviceState *dev, const char *name, hwaddr value)
-{
-    Error *errp = NULL;
-    object_property_set_int(OBJECT(dev), value, name, &errp);
-    assert(!errp);
-
-}
diff --git a/hw/display/sm501.c b/hw/display/sm501.c
index fc5e539..916816f 100644
--- a/hw/display/sm501.c
+++ b/hw/display/sm501.c
@@ -28,7 +28,6 @@
 #include "ui/console.h"
 #include "hw/devices.h"
 #include "hw/sysbus.h"
-#include "hw/qdev-addr.h"
 #include "qemu/range.h"
 #include "ui/pixel_ops.h"
 
diff --git a/hw/display/tcx.c b/hw/display/tcx.c
index 77c7191..d7465c6 100644
--- a/hw/display/tcx.c
+++ b/hw/display/tcx.c
@@ -26,7 +26,6 @@
 #include "ui/console.h"
 #include "ui/pixel_ops.h"
 #include "hw/sysbus.h"
-#include "hw/qdev-addr.h"
 
 #define MAXX 1024
 #define MAXY 768
diff --git a/hw/dma/xilinx_axidma.c b/hw/dma/xilinx_axidma.c
index bc62664..3a3ef8a 100644
--- a/hw/dma/xilinx_axidma.c
+++ b/hw/dma/xilinx_axidma.c
@@ -26,7 +26,6 @@
 #include "qemu/timer.h"
 #include "hw/ptimer.h"
 #include "qemu/log.h"
-#include "hw/qdev-addr.h"
 #include "qapi/qmp/qerror.h"
 
 #include "hw/stream.h"
diff --git a/hw/lm32/milkymist-hw.h b/hw/lm32/milkymist-hw.h
index 4e86c4e..5317ce6 100644
--- a/hw/lm32/milkymist-hw.h
+++ b/hw/lm32/milkymist-hw.h
@@ -2,7 +2,6 @@
 #define QEMU_HW_MILKYMIST_H
 
 #include "hw/qdev.h"
-#include "hw/qdev-addr.h"
 #include "net/net.h"
 
 static inline DeviceState *milkymist_uart_create(hwaddr base,
diff --git a/hw/net/milkymist-minimac2.c b/hw/net/milkymist-minimac2.c
index 29618e8..4ef6318 100644
--- a/hw/net/milkymist-minimac2.c
+++ b/hw/net/milkymist-minimac2.c
@@ -27,7 +27,6 @@
 #include "trace.h"
 #include "net/net.h"
 #include "qemu/error-report.h"
-#include "hw/qdev-addr.h"
 
 #include <zlib.h>
 
diff --git a/hw/sparc/sun4m.c b/hw/sparc/sun4m.c
index 31beb32..635115f 100644
--- a/hw/sparc/sun4m.c
+++ b/hw/sparc/sun4m.c
@@ -37,7 +37,6 @@
 #include "hw/nvram/fw_cfg.h"
 #include "hw/char/escc.h"
 #include "hw/empty_slot.h"
-#include "hw/qdev-addr.h"
 #include "hw/loader.h"
 #include "elf.h"
 #include "sysemu/blockdev.h"
diff --git a/include/hw/qdev-addr.h b/include/hw/qdev-addr.h
deleted file mode 100644
index 79708e6..0000000
--- a/include/hw/qdev-addr.h
+++ /dev/null
@@ -1,10 +0,0 @@
-#ifndef HW_QDEV_ADDR_H
-#define HW_QDEV_ADDR_H 1
-
-#define DEFINE_PROP_TADDR(_n, _s, _f, _d)                               \
-    DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_taddr, hwaddr)
-
-extern PropertyInfo qdev_prop_taddr;
-void qdev_prop_set_taddr(DeviceState *dev, const char *name, hwaddr value);
-
-#endif
-- 
1.7.9.5

Re: [Qemu-devel] [PATCH v3 0/2] Drop support for qdev taddr properties

[Blue Swirl]

Thanks, applied all.


On Sat, Apr 20, 2013 at 1:48 PM, Peter Maydell <peter.maydell@linaro.org> wrote:
> There is currently only one user of the qdev taddr (target addr,
> now hwaddr) property code, and that user is wrong anyway, since the
> property it's trying to set isn't actually a taddr property.
> Fix the erroneous use in sm501 and drop all the taddr property code.
>
> The justification for dropping the support is that a device should
> generally not be exposing properties whose width (conceptually)
> depends on the target CPU type. (This is the same rationale for
> not supporting hwaddr fields in migration state.) Instead the
> device should expose either a 32 bit or 64 bit property, depending
> on what the actual hardware does.
>
> Changes v2->v3:
>  * rebased and fixed trivial textual conflict in xilinx_axidma.c
> Changes v1->v2:
>  * no functional changes, just rebased since Paolo's moved
>    everything around and the old patches won't apply
>
> Peter Maydell (2):
>   hw/sm501: Use correct setter for sysbus-ohci dma-address property
>   qdev: Drop taddr properties
>
>  hw/block/fdc.c              |    1 -
>  hw/core/Makefile.objs       |    1 -
>  hw/core/qdev-addr.c         |   78 -------------------------------------------
>  hw/display/sm501.c          |    3 +-
>  hw/display/tcx.c            |    1 -
>  hw/dma/xilinx_axidma.c      |    1 -
>  hw/lm32/milkymist-hw.h      |    1 -
>  hw/net/milkymist-minimac2.c |    1 -
>  hw/sparc/sun4m.c            |    1 -
>  include/hw/qdev-addr.h      |   10 ------
>  10 files changed, 1 insertion(+), 97 deletions(-)
>  delete mode 100644 hw/core/qdev-addr.c
>  delete mode 100644 include/hw/qdev-addr.h
>
> --
> 1.7.9.5
>