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Fri, 25 Oct 2019 11:01:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1572001291; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=ZCMZbY3BXuLAM/Zus+tvhIQnQM13usxdBSN4vCiZ85E=; b=DX1gI0VlSlpP97rW1p+q2CJG/FiWpbRmBRBJ7Z7wSpzpyhIAszvwIwa+OL4A3n1smbA7NH sZMimUU8fALFJErSjIcobI9RDObHffQi5Yeg8N1PdGB6lWrJg8TwTg7VPkaxltZog3G/ZX 3R4PCPktPHYDOZbHVuQdQj40hatRZoE= From: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= To: Mark Cave-Ayland , Fabien Chouteau , Artyom Tarasenko , qemu-devel@nongnu.org, KONRAD Frederic Subject: [PATCH 2/2] hw/misc/grlib_ahb_apb_pnp: Fix 8-bit accesses Date: Fri, 25 Oct 2019 13:01:14 +0200 Message-Id: <20191025110114.27091-3-philmd@redhat.com> In-Reply-To: <20191025110114.27091-1-philmd@redhat.com> References: <20191025110114.27091-1-philmd@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 X-MC-Unique: ssyFhbnKMDutZZ3z4SsUIw-1 X-Mimecast-Spam-Score: 0 Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 207.211.31.120 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: qemu-trivial@nongnu.org, =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Jiri Gaisler Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" 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_apb_pnp_read(void *opaque, hwaddr offset, unsigned = size) { APBPnp *apb_pnp =3D GRLIB_APB_PNP(opaque); return apb_pnp->regs[offset >> 2]; } 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. This is required to run RTEMS on leon3, the grlib scanning functions do byte accesses. Reported-by: Jiri Gaisler Signed-off-by: Philippe Mathieu-Daud=C3=A9 Reviewed-by: KONRAD Frederic --- 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 f3c015d2c3..e230e25363 100644 --- a/hw/misc/grlib_ahb_apb_pnp.c +++ b/hw/misc/grlib_ahb_apb_pnp.c @@ -242,6 +242,10 @@ static const MemoryRegionOps grlib_apb_pnp_ops =3D { .read =3D grlib_apb_pnp_read, .write =3D grlib_apb_pnp_write, .endianness =3D DEVICE_BIG_ENDIAN, + .impl =3D { + .min_access_size =3D 4, + .max_access_size =3D 4, + }, }; =20 static void grlib_apb_pnp_realize(DeviceState *dev, Error **errp) --=20 2.21.0