[PATCH v2 04/43] hw/isa/piix3: Add size constraints to rcr_ops

Bernhard Beschow posted 43 patches 2 years, 10 months ago
Maintainers: "Philippe Mathieu-Daudé" <philmd@linaro.org>, Paolo Bonzini <pbonzini@redhat.com>, Richard Henderson <richard.henderson@linaro.org>, Eduardo Habkost <eduardo@habkost.net>, "Michael S. Tsirkin" <mst@redhat.com>, Marcel Apfelbaum <marcel.apfelbaum@gmail.com>, Igor Mammedov <imammedo@redhat.com>, Ani Sinha <ani@anisinha.ca>, John Snow <jsnow@redhat.com>, "Hervé Poussineau" <hpoussin@reactos.org>, Aurelien Jarno <aurelien@aurel32.net>, Gerd Hoffmann <kraxel@redhat.com>
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[PATCH v2 04/43] hw/isa/piix3: Add size constraints to rcr_ops
Posted by Bernhard Beschow 2 years, 10 months ago
According to the PIIX3 datasheet, the reset control register is one byte in size.
Moreover, PIIX4 has it, so add it to PIIX3 as well.

Signed-off-by: Bernhard Beschow <shentey@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
 hw/isa/piix3.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/hw/isa/piix3.c b/hw/isa/piix3.c
index 04895ce2e5..72dbf688d9 100644
--- a/hw/isa/piix3.c
+++ b/hw/isa/piix3.c
@@ -290,7 +290,11 @@ static uint64_t rcr_read(void *opaque, hwaddr addr, unsigned len)
 static const MemoryRegionOps rcr_ops = {
     .read = rcr_read,
     .write = rcr_write,
-    .endianness = DEVICE_LITTLE_ENDIAN
+    .endianness = DEVICE_LITTLE_ENDIAN,
+    .impl = {
+        .min_access_size = 1,
+        .max_access_size = 1,
+    },
 };
 
 static void pci_piix3_realize(PCIDevice *dev, Error **errp)
-- 
2.38.1