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[95.127.187.184]) by smtp.gmail.com with ESMTPSA id l16sm16664993wmj.47.2021.07.03.07.20.08 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 03 Jul 2021 07:20:09 -0700 (PDT) From: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= To: qemu-devel@nongnu.org Subject: [RFC PATCH 3/6] dp8393x: Restrict bus access to 16/32-bit operations Date: Sat, 3 Jul 2021 16:19:44 +0200 Message-Id: <20210703141947.352295-4-f4bug@amsat.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210703141947.352295-1-f4bug@amsat.org> References: <20210703141947.352295-1-f4bug@amsat.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2a00:1450:4864:20::332; envelope-from=philippe.mathieu.daude@gmail.com; helo=mail-wm1-x332.google.com X-Spam_score_int: -14 X-Spam_score: -1.5 X-Spam_bar: - X-Spam_report: (-1.5 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FORGED_FROMDOMAIN=0.248, FREEMAIL_FROM=0.001, HEADER_FROM_DIFFERENT_DOMAINS=0.248, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action 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: Jason Wang , Mark Cave-Ayland , Laurent Vivier , Finn Thain , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Per the DP83932C datasheet from July 1995: 1. Functional Description 1.3 DATA WIDTH AND BYTE ORDERING The SONIC can be programmed to operate with either 32-bit or 16-bit wide memory. Restrict the memory bus to reject 8/64-bit accesses. Signed-off-by: Philippe Mathieu-Daudé --- hw/net/dp8393x.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/hw/net/dp8393x.c b/hw/net/dp8393x.c index d16ade2b198..c9b478c127c 100644 --- a/hw/net/dp8393x.c +++ b/hw/net/dp8393x.c @@ -695,6 +695,8 @@ static const MemoryRegionOps dp8393x_ops = { .write = dp8393x_write, .impl.min_access_size = 2, .impl.max_access_size = 2, + .valid.min_access_size = 2, + .valid.max_access_size = 4, .endianness = DEVICE_NATIVE_ENDIAN, }; -- 2.31.1