From nobody Wed Feb 11 04:02:39 2026 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=1612900652; cv=none; d=zohomail.com; s=zohoarc; b=ew3ZH8vTwd/HizILpirvjtXQbvYLxQ7CSQ7VL4yuRltnONacSnTuLvASA4WbUcwq4h0jVkR9+q+FkA61h8qQ9OAYGpqMEACM9aWJQ/9zVmwA2E7rKgp4wF5rH1s/RZcTXcIEqBdHqn1j/z7Zcux0bdGqoN0NQhY6FRyNwnTHuiw= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1612900652; h=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=VrOmNxnXrRHudY2GKe+cSRV8BX8DKkIqQ1qB4Hci7IY=; b=bJUp/ASCTN3x3+YeSKjj+3lLYCVrpLiUOnp0Yph49ZRggd+HOfD28TKp5hkmUNyexLq97orSrWbmNh95hSS02JBft6NyHDah3IbPQ0cdG4Crsm2KVRbL1ce9IrU72io758Ou6ZEvAJCJ2QU0KC0erTjY4xoqsaqM4e6QvwH5JLo= 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 1612900652334591.0564583868505; Tue, 9 Feb 2021 11:57:32 -0800 (PST) Received: from localhost ([::1]:34150 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1l9Z8d-000134-9U for importer@patchew.org; Tue, 09 Feb 2021 14:57:31 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:58286) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1l9Yls-0006vk-Qj for qemu-devel@nongnu.org; Tue, 09 Feb 2021 14:34:00 -0500 Received: from mail.ilande.co.uk ([2001:41c9:1:41f::167]:57136 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 1l9Yle-0003CF-QO for qemu-devel@nongnu.org; Tue, 09 Feb 2021 14:33:58 -0500 Received: from host109-153-84-1.range109-153.btcentralplus.com ([109.153.84.1] 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 1l9Ylo-0007pt-1a; Tue, 09 Feb 2021 19:34:00 +0000 From: Mark Cave-Ayland To: qemu-devel@nongnu.org, pbonzini@redhat.com, fam@euphon.net, laurent@vivier.eu Date: Tue, 9 Feb 2021 19:30:16 +0000 Message-Id: <20210209193018.31339-41-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20210209193018.31339-1-mark.cave-ayland@ilande.co.uk> References: <20210209193018.31339-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-SA-Exim-Connect-IP: 109.153.84.1 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH v2 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" Content-Type: text/plain; charset="utf-8" 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: Laurent Vivier Reviewed-by: Philippe Mathieu-Daud=C3=A9 --- hw/scsi/esp.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index 9dd9947307..1f01f2314b 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -825,6 +825,10 @@ 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