[Qemu-devel] [RFC PATCH 15/17] hw/ssi: Declare device little or big endian

[Tony Nguyen <tony.nguyen@bt.com>]

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
the device endianness as DEVICE_LITTLE_ENDIAN or DEVICE_BIG_ENDIAN
respectively.

This *naive* deduction may result in genuinely native endian devices
being incorrectly declared as little or big endian, but should not
introduce regressions for current targets.

These devices should be re-declared as DEVICE_NATIVE_ENDIAN if 1) it
has a new target with an opposite endian or 2) someone informed knows
better =)

Signed-off-by: Tony Nguyen <tony.nguyen@bt.com>
---
 hw/ssi/mss-spi.c       | 2 +-
 hw/ssi/pl022.c         | 2 +-
 hw/ssi/stm32f2xx_spi.c | 2 +-
 hw/ssi/xilinx_spips.c  | 2 +-
 4 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/hw/ssi/mss-spi.c b/hw/ssi/mss-spi.c
index 3050fabb69..914f90f3ad 100644
--- a/hw/ssi/mss-spi.c
+++ b/hw/ssi/mss-spi.c
@@ -361,7 +361,7 @@ static void spi_write(void *opaque, hwaddr addr,
 static const MemoryRegionOps spi_ops = {
     .read = spi_read,
     .write = spi_write,
-    .endianness = DEVICE_NATIVE_ENDIAN,
+    .endianness = DEVICE_LITTLE_ENDIAN,
     .valid = {
         .min_access_size = 1,
         .max_access_size = 4
diff --git a/hw/ssi/pl022.c b/hw/ssi/pl022.c
index cade2e92a8..1501af2850 100644
--- a/hw/ssi/pl022.c
+++ b/hw/ssi/pl022.c
@@ -228,7 +228,7 @@ static void pl022_reset(DeviceState *dev)
 static const MemoryRegionOps pl022_ops = {
     .read = pl022_read,
     .write = pl022_write,
-    .endianness = DEVICE_NATIVE_ENDIAN,
+    .endianness = DEVICE_LITTLE_ENDIAN,
 };
 
 static int pl022_post_load(void *opaque, int version_id)
diff --git a/hw/ssi/stm32f2xx_spi.c b/hw/ssi/stm32f2xx_spi.c
index cd6e8443db..dbb109b2dc 100644
--- a/hw/ssi/stm32f2xx_spi.c
+++ b/hw/ssi/stm32f2xx_spi.c
@@ -167,7 +167,7 @@ static void stm32f2xx_spi_write(void *opaque, hwaddr addr,
 static const MemoryRegionOps stm32f2xx_spi_ops = {
     .read = stm32f2xx_spi_read,
     .write = stm32f2xx_spi_write,
-    .endianness = DEVICE_NATIVE_ENDIAN,
+    .endianness = DEVICE_LITTLE_ENDIAN,
 };
 
 static const VMStateDescription vmstate_stm32f2xx_spi = {
diff --git a/hw/ssi/xilinx_spips.c b/hw/ssi/xilinx_spips.c
index a309c712ca..e622e38f6d 100644
--- a/hw/ssi/xilinx_spips.c
+++ b/hw/ssi/xilinx_spips.c
@@ -1240,7 +1240,7 @@ static MemTxResult lqspi_write(void *opaque, hwaddr offset, uint64_t value,
 static const MemoryRegionOps lqspi_ops = {
     .read_with_attrs = lqspi_read,
     .write_with_attrs = lqspi_write,
-    .endianness = DEVICE_NATIVE_ENDIAN,
+    .endianness = DEVICE_LITTLE_ENDIAN,
     .impl = {
         .min_access_size = 4,
         .max_access_size = 4,
-- 
2.23.0