From nobody Fri Oct 25 19:29:57 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 ARC-Seal: i=1; a=rsa-sha256; t=1614897661; cv=none; d=zohomail.com; s=zohoarc; b=Wwv7Gtuy/+Eb1F0Uwj9lQcmvvzHxJR+LfBRk6iAPU0OmxFg+lhaD4dBV5WeRb5F+ohldUqcP0LtyuoZCrgvuOSTAuG9XRqkffxkmTw6W9zEK5ywgmJn1dRgbPy5GBFgaWlIHN7JwGdj8qg0lNb01kPoNLEJpJ4De3NWV65gSiV4= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1614897661; h=Content-Type:Content-Transfer-Encoding:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=0nWzZsozgW/Bp2cDvWcHsN+dPN0PgQoTqfKBs9xswS4=; b=VaISX+t/u1e7rPk9M9Ad2Oap62CFcgKoKHhNpIhWrDLyjymuCeiakDpouuMVQcTJ2D5b9Hx15u0Rjc2wPscwsmHKfdn3DmaTc12GfVQiLg5MOl92yU8nJzzjr0osQgk4sIR2OD7cfOD1UU009ONyKaBxfDpcdlX8zK6Ifssb4hc= ARC-Authentication-Results: i=1; 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 1614897661981923.1626421315929; Thu, 4 Mar 2021 14:41:01 -0800 (PST) Received: from localhost ([::1]:38368 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lHweR-0004N7-Oa for importer@patchew.org; Thu, 04 Mar 2021 17:41:01 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:54136) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lHwFH-0002Kb-RL for qemu-devel@nongnu.org; Thu, 04 Mar 2021 17:14:59 -0500 Received: from mail.ilande.co.uk ([2001:41c9:1:41f::167]:40302 helo=mail.default.ilande.uk0.bigv.io) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lHwFG-0006wW-5H for qemu-devel@nongnu.org; Thu, 04 Mar 2021 17:14:59 -0500 Received: from host86-148-34-47.range86-148.btcentralplus.com ([86.148.34.47] helo=kentang.home) by mail.default.ilande.uk0.bigv.io with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1lHwEz-0008MJ-Bv; Thu, 04 Mar 2021 22:14:46 +0000 From: Mark Cave-Ayland To: qemu-devel@nongnu.org, pbonzini@redhat.com, fam@euphon.net, laurent@vivier.eu Date: Thu, 4 Mar 2021 22:11:01 +0000 Message-Id: <20210304221103.6369-41-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20210304221103.6369-1-mark.cave-ayland@ilande.co.uk> References: <20210304221103.6369-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-SA-Exim-Connect-IP: 86.148.34.47 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH v3 40/42] esp: add trivial implementation of the ESP_RFLAGS register X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.default.ilande.uk0.bigv.io) 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=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.default.ilande.uk0.bigv.io X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, 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: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" The bottom 5 bits contain the number of bytes remaining in the FIFO which is trivial to implement with Fifo8 (the remaining bits are unimplemented and l= eft as 0 for now). Signed-off-by: Mark Cave-Ayland Reviewed-by: Philippe Mathieu-Daud=C3=A9 Reviewed-by: Laurent Vivier --- hw/scsi/esp.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index 34dc58da58..8a9b1500de 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -818,6 +818,10 @@ uint64_t esp_reg_read(ESPState *s, uint32_t saddr) val =3D s->rregs[saddr]; } break; + case ESP_RFLAGS: + /* Bottom 5 bits indicate number of bytes in FIFO */ + val =3D fifo8_num_used(&s->fifo); + break; default: val =3D s->rregs[saddr]; break; --=20 2.20.1