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[88.187.86.199]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-43bd42c8050sm1989855e9.21.2025.03.04.17.24.04 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Tue, 04 Mar 2025 17:24:05 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1741137846; x=1741742646; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=zsw3hWIwysJpMOxIWVwDgeawOr5AGtB31cvISbXkIjI=; b=gB4KeL70UwMnRFx/HECn5QdOBHUVajlYN85JrM9ATad4YwGRr2Lx96JJdiVPR8/WKH wCKm9aN+BNZy2Wcxh4DeFteC0HILmPqBjxOCBbOzHexqP/Xqc7AkHNj97aEl+yBE5paX bvakTqmql+nAxAbW7T7M4ronz3Rz1JLhiZENe0cnCdnhHdgupJxbNRTH6p5eEY1lcvDn G2T+xZA9g2V33VT11RkdlA6p44YpcXHOVLXN7x6Au/BD15oiKQQf1HDJgIOu5YgOdM2X m4g66MnLwIkM//PpngZsR0IxX/vuxNWNvJ/AFyzn/0hELOt3vPOg+6zNTtIC/whcRzML POTw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1741137846; x=1741742646; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=zsw3hWIwysJpMOxIWVwDgeawOr5AGtB31cvISbXkIjI=; b=Y0lPJyl35H7EPINLzHLPMsczGpyG2pA0zVCGZFt2Fc1G1RYveQXfgfK3UyA1VR9eZW bCoJcRnGbnTcEcU+JLfi35xVMIfxNq9IXmtb0FmdLwVYBiTzNz8RQjFzA3iARyYdTgVp DESp7LoQP65Kj1+BdkaWgZ0Qa5Vb8vLUZf/jq4hTeFG0Fzrfy1XxhAG4hXUuWtK0aj2j pJvZ49buDmVrwfhIBXk2W3gKs4YPSuRqWu7HaFpfarWTx4s5+V1+nAyIzFcEXHbRwi6b buvJtsT8dGbeNocnTYEtCGWwzhiCDaLst+aDqf9Imcb1VindG1cXSvGLftsyalYqhkcb RvLA== X-Gm-Message-State: AOJu0YwRaXXWAowf3kNskItwY8s2Bq9vqbqbYEPFCYGhRVyrO8vVQMI6 GdxRP+gC1y4XbwXhGZTDpVHzIzg++roBVK0Tj33nbsLW8rhX2pMrMUAwP1g45QTaMtul1DlrntL EfOM= X-Gm-Gg: ASbGncv4pOqHbx2BGgyDLvVJPKqgf9sVDPLE0/+Wa4Yuobw1SgsXkl0F7+gFHZr69yv qx3yuJITx/sHxAoqvxpan6/utXnWUNBIkX8SVQ++N4oBwG2Mn8Ea1ZuWZbc4lA5iy0peJU7jP0m A+SJ8TOO1abAFGKOoHlGZ069a/HWFeXqgO0Vx3s37IafIML4Xxg4Mri3TbRXok/bILMaoQCjIwn 9FZ60o1KwTRy4WZhw/zkE+MHgqKu0imgyMdbvEeecxZEEtOK+tgxzOL+MVkQgVyFUjisfmls8/N D0hR7pkkiQU3Hcd5QinUfHdyRY0qzj2t2+DHoCiE2nmRuHkJfq/+V90qopLNUs/RNt64mFrSOdB pNf+lJXlmEwt9zDXYY20= X-Google-Smtp-Source: AGHT+IG9ZmacBlKb5ZVQcmDUs9qj5tagOwc/FyygnJ6KABY3skoFkrFA0rNRxJS1t2tQYkQMx+bXsw== X-Received: by 2002:a7b:ce94:0:b0:43b:cf9c:700c with SMTP id 5b1f17b1804b1-43bd29847ffmr8044605e9.16.1741137846353; Tue, 04 Mar 2025 17:24:06 -0800 (PST) From: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= To: qemu-devel@nongnu.org Cc: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Luc Michel , Thomas Huth , Richard Henderson Subject: [PULL 26/41] hw/char/mcf_uart: Really use RX FIFO depth Date: Wed, 5 Mar 2025 02:21:41 +0100 Message-ID: <20250305012157.96463-27-philmd@linaro.org> X-Mailer: git-send-email 2.47.1 In-Reply-To: <20250305012157.96463-1-philmd@linaro.org> References: <20250305012157.96463-1-philmd@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" 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=2a00:1450:4864:20::32b; envelope-from=philmd@linaro.org; helo=mail-wm1-x32b.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, 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: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1741138563813019000 While we model a 4-elements RX FIFO since the MCF UART model was introduced in commit 20dcee94833 ("MCF5208 emulation"), we only read 1 char at a time! Have the IOCanReadHandler handler return how many elements are available, and use that in the IOReadHandler handler. Signed-off-by: Philippe Mathieu-Daud=C3=A9 Reviewed-by: Luc Michel Tested-by: Thomas Huth Reviewed-by: Thomas Huth Reviewed-by: Richard Henderson Message-Id: <20250220092903.3726-9-philmd@linaro.org> --- hw/char/mcf_uart.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/hw/char/mcf_uart.c b/hw/char/mcf_uart.c index 95f269ee9b7..529c26be93a 100644 --- a/hw/char/mcf_uart.c +++ b/hw/char/mcf_uart.c @@ -281,14 +281,16 @@ static int mcf_uart_can_receive(void *opaque) { mcf_uart_state *s =3D (mcf_uart_state *)opaque; =20 - return s->rx_enabled && (s->sr & MCF_UART_FFULL) =3D=3D 0; + return s->rx_enabled ? FIFO_DEPTH - s->fifo_len : 0; } =20 static void mcf_uart_receive(void *opaque, const uint8_t *buf, int size) { mcf_uart_state *s =3D (mcf_uart_state *)opaque; =20 - mcf_uart_push_byte(s, buf[0]); + for (int i =3D 0; i < size; i++) { + mcf_uart_push_byte(s, buf[i]); + } } =20 static const MemoryRegionOps mcf_uart_ops =3D { --=20 2.47.1