Le 3/31/20 à 12:50 PM, Philippe Mathieu-Daudé a écrit :
The Plug & Play region of the AHB/APB bridge can be accessed
by various word size, however the implementation is clearly
restricted to 32-bit:

   static uint64_t grlib_ahb_pnp_read(void *opaque, hwaddr offset, unsigned 
size)
   {
       AHBPnp *ahb_pnp = GRLIB_AHB_PNP(opaque);

       return ahb_pnp->regs[offset >> 2];
   }

Similarly to commit 0fbe394a64 with the APB PnP registers,
set the MemoryRegionOps::impl min/max fields to 32-bit, so
memory.c::access_with_adjusted_size() can adjust when the
access is not 32-bit.

Signed-off-by: Philippe Mathieu-Daudé <f4...@amsat.org>
---
  hw/misc/grlib_ahb_apb_pnp.c | 4 ++++
  1 file changed, 4 insertions(+)

diff --git a/hw/misc/grlib_ahb_apb_pnp.c b/hw/misc/grlib_ahb_apb_pnp.c
index 72a8764776..d22ed00206 100644
--- a/hw/misc/grlib_ahb_apb_pnp.c
+++ b/hw/misc/grlib_ahb_apb_pnp.c
@@ -146,6 +146,10 @@ static const MemoryRegionOps grlib_ahb_pnp_ops = {
      .read       = grlib_ahb_pnp_read,
      .write      = grlib_ahb_pnp_write,
      .endianness = DEVICE_BIG_ENDIAN,
+    .impl = {
+        .min_access_size = 4,
+        .max_access_size = 4,
+    },
  };
static void grlib_ahb_pnp_realize(DeviceState *dev, Error **errp)


Reviewed-by: KONRAD Frederic <frederic.kon...@adacore.com>

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