From nobody Mon May 20 22:06:09 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1689514612251170.1915201274494; Sun, 16 Jul 2023 06:36:52 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qL1uk-0001c6-QH; Sun, 16 Jul 2023 09:35:54 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qL1uh-0001bn-Ms for qemu-devel@nongnu.org; Sun, 16 Jul 2023 09:35:52 -0400 Received: from mail-ej1-f42.google.com ([209.85.218.42]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1qL1uf-0007IW-FG for qemu-devel@nongnu.org; Sun, 16 Jul 2023 09:35:51 -0400 Received: by mail-ej1-f42.google.com with SMTP id a640c23a62f3a-99357737980so520555466b.2 for ; Sun, 16 Jul 2023 06:35:47 -0700 (PDT) Received: from fedora.. (tmo-097-144.customers.d1-online.com. [80.187.97.144]) by smtp.gmail.com with ESMTPSA id t23-20020a1709066bd700b00992025654c1sm7965379ejs.179.2023.07.16.06.35.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 16 Jul 2023 06:35:45 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1689514546; x=1692106546; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=We2n9WQvoGrrZmo3ZhgFvy3phFiDh5U7AmKN8h7uQqU=; b=RFdOK+5C9J8L6BJekFJUU/gubjuOvqzVj7Z1AFJxfdbq4rvzwGTQuSCV1sEq1QXTRJ PF9BCdMdyXfkQwBkMTVET0zfdsQUJ6J437G5p5O0PFxMZBUC6XlNCOiDzJCSUhKLxg+G WUvXCy+lTsoVaaZQlJHr5kFX8P6bsPfC7GFiPjV/QZIJDeChCHJFrdGiVOzwjMcKBEKK o7wvtJmVM+I83IEk7c2t7fu3k2K9YP6sgJrqAiFRD/z4B8CMG9Qk1RVrovkk/IVHtvF7 4zAdcG/BP5TUkwY9/PbFrSzpBBgb0HOlmmxA80atfdgvwW7DVUgeGMRJOAuXIplp84IV qeKA== X-Gm-Message-State: ABy/qLbDlbppOfkFfcjwC6OiHMhavdct19/wLuhWNeX5wyGCOxSpksde KqXyxRT8mH+hxSeUgZFMAVg= X-Google-Smtp-Source: APBJJlGz1Es7Lrz79asB7yVuyTEnpmbO96BE2wC6tcoO/fYZFke67sdXomCv/Kq6XimpGIqonjWzSg== X-Received: by 2002:a17:906:225c:b0:993:dd1d:8251 with SMTP id 28-20020a170906225c00b00993dd1d8251mr11141302ejr.28.1689514546176; Sun, 16 Jul 2023 06:35:46 -0700 (PDT) From: Thomas Huth To: =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , qemu-devel@nongnu.org Cc: Paolo Bonzini , Laurent Vivier , Mark Cave-Ayland Subject: [PATCH] hw/char/escc: Implement loopback mode Date: Sun, 16 Jul 2023 17:35:19 +0200 Message-ID: <20230716153519.31722-1-huth@tuxfamily.org> X-Mailer: git-send-email 2.41.0 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=209.85.218.42; envelope-from=th.huth@gmail.com; helo=mail-ej1-f42.google.com X-Spam_score_int: -13 X-Spam_score: -1.4 X-Spam_bar: - X-Spam_report: (-1.4 / 5.0 requ) BAYES_00=-1.9, FREEMAIL_FORGED_FROMDOMAIN=0.25, FREEMAIL_FROM=0.001, HEADER_FROM_DIFFERENT_DOMAINS=0.25, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=no 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-ZM-MESSAGEID: 1689514613978100001 Content-Type: text/plain; charset="utf-8" The firmware of the m68k next-cube machine uses the loopback mode for self-testing the hardware and currently fails during this step. By implementing the loopback mode, we can make the firmware pass to the next step. Signed-off-by: Thomas Huth Reviewed-by: Mark Cave-Ayland Reviewed-by: Philippe Mathieu-Daud=C3=A9 --- hw/char/escc.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/hw/char/escc.c b/hw/char/escc.c index 4f3872bfe9..4be66053c1 100644 --- a/hw/char/escc.c +++ b/hw/char/escc.c @@ -653,7 +653,9 @@ static void escc_mem_write(void *opaque, hwaddr addr, escc_update_irq(s); s->tx =3D val; if (s->wregs[W_TXCTRL2] & TXCTRL2_TXEN) { /* tx enabled */ - if (qemu_chr_fe_backend_connected(&s->chr)) { + if (s->wregs[W_MISC2] & MISC2_LCL_LOOP) { + serial_receive_byte(s, s->tx); + } else if (qemu_chr_fe_backend_connected(&s->chr)) { /* * XXX this blocks entire thread. Rewrite to use * qemu_chr_fe_write and background I/O callbacks --=20 2.41.0