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[04/19] hw/core: Declare device little or big endian

Message ID 5f28bb686a0c4e339bcff2df63492a1aee509c1c.1566829168.git.tony.nguyen@bt.com
State New
Headers show
Series Declare device little or big endian | expand

Commit Message

Tony Nguyen Aug. 26, 2019, 2:21 p.m. UTC
For each device declared with DEVICE_NATIVE_ENDIAN, find the set of
targets from the set of target/hw/*/device.o.

If the set of targets are all little or all big endian, re-declare
as DEVICE_LITTLE_ENDIAN or DEVICE_BIG_ENDIAN respectively.

Then, on inspection:
- if ununsed, re-declare as DEVICE_HOST_ENDIAN.
- if max/min size=1, re-declare as DEVICE_HOST_ENDIAN.
- if just a bit bucket, re-delcare as DEVICE_HOST_ENDIAN
- if PCI, re-declare as DEVICE_LITTLE_ENDIAN.
- if for {ARM|unicore32} only, re-declare as DEVICE_LITTLE_ENDIAN.
- if for SPARC only, re-declare as DEVICE_BIG_ENDIAN.

Signed-off-by: Tony Nguyen <tony.nguyen@bt.com>
---
 hw/core/empty_slot.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Philippe Mathieu-Daudé Oct. 2, 2019, 11:34 a.m. UTC | #1
On 8/26/19 4:21 PM, Tony Nguyen wrote:
> For each device declared with DEVICE_NATIVE_ENDIAN, find the set of
> targets from the set of target/hw/*/device.o.
> 
> If the set of targets are all little or all big endian, re-declare
> as DEVICE_LITTLE_ENDIAN or DEVICE_BIG_ENDIAN respectively.
> 
> Then, on inspection:
> - if ununsed, re-declare as DEVICE_HOST_ENDIAN.

In all the series: 'ununsed' -> 'unused'


> - if max/min size=1, re-declare as DEVICE_HOST_ENDIAN.
> - if just a bit bucket, re-delcare as DEVICE_HOST_ENDIAN

In all the series: 're-delcare' -> 're-declare'

> - if PCI, re-declare as DEVICE_LITTLE_ENDIAN.
> - if for {ARM|unicore32} only, re-declare as DEVICE_LITTLE_ENDIAN.
> - if for SPARC only, re-declare as DEVICE_BIG_ENDIAN.
> 
> Signed-off-by: Tony Nguyen <tony.nguyen@bt.com>
> ---
>   hw/core/empty_slot.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/hw/core/empty_slot.c b/hw/core/empty_slot.c
> index 3ba450e1ca..2785b6acf9 100644
> --- a/hw/core/empty_slot.c
> +++ b/hw/core/empty_slot.c
> @@ -49,7 +49,7 @@ static void empty_slot_write(void *opaque, hwaddr addr,
>   static const MemoryRegionOps empty_slot_ops = {
>       .read = empty_slot_read,
>       .write = empty_slot_write,
> -    .endianness = DEVICE_NATIVE_ENDIAN,
> +    .endianness = DEVICE_HOST_ENDIAN,

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>

>   };
>   
>   void empty_slot_init(hwaddr addr, uint64_t slot_size)
>
diff mbox series

Patch

diff --git a/hw/core/empty_slot.c b/hw/core/empty_slot.c
index 3ba450e1ca..2785b6acf9 100644
--- a/hw/core/empty_slot.c
+++ b/hw/core/empty_slot.c
@@ -49,7 +49,7 @@  static void empty_slot_write(void *opaque, hwaddr addr,
 static const MemoryRegionOps empty_slot_ops = {
     .read = empty_slot_read,
     .write = empty_slot_write,
-    .endianness = DEVICE_NATIVE_ENDIAN,
+    .endianness = DEVICE_HOST_ENDIAN,
 };
 
 void empty_slot_init(hwaddr addr, uint64_t slot_size)