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[144.168.56.201]) by smtp.gmail.com with ESMTPSA id e5sm3475068qtq.1.2021.03.05.22.01.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 05 Mar 2021 22:01:59 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=ll8Okbz5Uij50gPjGOSZvQHfhgX4epjg5WaXEqmkK+o=; b=QEdVFFFZuvkunLyt90Yye9iNR2dtA00wqde08BN2FzVx0VFqK6+4wpTJYVFZNj0Cr5 Pl2OomV7+yALuGGJ/RSKgnCr2lTLlO4zBdXAPW5p39SfqxFK5ubcp6Ab1d0TrkwBfN3L UdPfzKDWFw5jPvbmMCr3WGN+KHk9yYGg3Ud7Uf8tc6Mot8ptse57wX4xrtam1iZdnQUz +wqkTp/GqvpZS6POzYVhurekjwHT9kc1tuMpo35uPvj5mFw/HG6HQQP5v4SQ4LQnHGE9 pBf39IYn+ARelgdz8KznTPIe8KyFiHwt8Wiyo5DQOX6qxmt/9EFEJ7wU95qdgO0VUERZ j1kg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=ll8Okbz5Uij50gPjGOSZvQHfhgX4epjg5WaXEqmkK+o=; b=f87oSJXDR8YrnBPeB38bXD9gscuSJl0vcXLQtAeQ1RjLzj6BMd3K/rhoTw/uFuoxfS FDzaWSsl8nY/PJbsGucNJmLMMagi7uBaH0FCBHkVCBZJyRUnXrq8p3qDrpR9mmpVTem1 ZUSGvq/Ty52Z1nh0Z5/gaYo6ZNzyHFJRpJMMVRYx9q71Amr39haI6j2va7qJI2+LxKYK 3chr3cnYxAxfUajfklB0Is/ZiDvBI4UZl9sHKVAMTanjn2gpcbqZflueXSwA7AcaPGjJ GkwxKsCcva17NGwIMZ2By9TN50XuHp83HrPkfwlN9lMy6slmWBqUl7FCH0yKgVNw69IP ChkQ== X-Gm-Message-State: AOAM533/h3N6mZIizvvwV8zgl7KTQQoL8nE5X5kwFhS7dgbIQ6hqVpCt iyXwVfPROcyT49NN/4Hvwsw= X-Google-Smtp-Source: ABdhPJwfstoLQemv6WurxQnZ28t7TNkM8LSAu0qzFnFwhSqJ8dgZWjanlbFVljySuygu/0sx0ro4gg== X-Received: by 2002:ac8:1098:: with SMTP id a24mr9561342qtj.27.1615010520307; Fri, 05 Mar 2021 22:02:00 -0800 (PST) From: Bin Meng To: Alistair Francis Subject: [PATCH v2] hw/block: m25p80: Support fast read for SST flashes Date: Sat, 6 Mar 2021 14:01:52 +0800 Message-Id: <20210306060152.7250-1-bmeng.cn@gmail.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::835; envelope-from=bmeng.cn@gmail.com; helo=mail-qt1-x835.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham 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: Bin Meng , qemu-devel@nongnu.org, qemu-block@nongnu.org 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" From: Bin Meng Per SST25VF016B datasheet [1], SST flash requires a dummy byte after the address bytes. Note only SPI mode is supported by SST flashes. [1] http://ww1.microchip.com/downloads/en/devicedoc/s71271_04.pdf Signed-off-by: Bin Meng Acked-by: Alistair Francis --- Changes in v2: - rebase on qemu/master hw/block/m25p80.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/hw/block/m25p80.c b/hw/block/m25p80.c index 5f9471d83c..183d3f44c2 100644 --- a/hw/block/m25p80.c +++ b/hw/block/m25p80.c @@ -895,6 +895,9 @@ static void decode_fast_read_cmd(Flash *s) s->needed_bytes =3D get_addr_length(s); switch (get_man(s)) { /* Dummy cycles - modeled with bytes writes instead of bits */ + case MAN_SST: + s->needed_bytes +=3D 1; + break; case MAN_WINBOND: s->needed_bytes +=3D 8; break; --=20 2.25.1