From nobody Tue Feb 10 09:58:48 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=1603873966; cv=none; d=zohomail.com; s=zohoarc; b=lk2JxNVuo8KeKWaiZzz0OOtjqLipd9b9vnZJo9EmI6chAiHU79+Df6YVD4naiqwS4v/S5J9SVDZX3hdC5bxe+3AmG+9UlBHeRorFtsl6+Jz+JCxsiFSjB+35Zuw+H4zYr1n6PMAJrKsb/gB/YcCu10mMg0nLAfLmIO4RsGEIumc= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1603873966; h=Content-Type:Content-Transfer-Encoding:Cc: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=iaUu8XgGfVGoJ3FVpgkYnKHDBj1MqXwyFQDuwzgkM3k=; b=RggXESD44xsL5vPDldHe9RwiocBS5c1irvpvTqSa3TMmk17Mnazcl+DdeB+SKWSrQPezFgQ7YU1juXzzd+fTXh0JOmIQEk+B8Iaf9jCysGw3n21Je8wSpMT55PjmLAFKJqwJkPYMl3d6OsSaw5Nwt8kyPjBuRISqQWNSvBLlVg0= 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 1603873966488697.5233320770899; Wed, 28 Oct 2020 01:32:46 -0700 (PDT) Received: from localhost ([::1]:60520 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kXgsu-0003Co-Qx for importer@patchew.org; Wed, 28 Oct 2020 04:32:44 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:37512) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kXglO-0003dX-9F; Wed, 28 Oct 2020 04:24:58 -0400 Received: from mail.ilande.co.uk ([2001:41c9:1:41f::167]:51696 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 1kXglM-0004El-7T; Wed, 28 Oct 2020 04:24:57 -0400 Received: from host81-158-111-11.range81-158.btcentralplus.com ([81.158.111.11] 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 1kXglP-0006Q8-BL; Wed, 28 Oct 2020 08:25:04 +0000 From: Mark Cave-Ayland To: peter.maydell@linaro.org, qemu-devel@nongnu.org Date: Wed, 28 Oct 2020 08:23:54 +0000 Message-Id: <20201028082358.23761-7-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20201028082358.23761-1-mark.cave-ayland@ilande.co.uk> References: <20201028082358.23761-1-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: 81.158.111.11 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PULL 06/10] hw/display/tcx: Allow 64-bit accesses to framebuffer stippler and blitter 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-detected-operating-system: by eggs.gnu.org: No matching host in p0f cache. That's all we know. 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: , Cc: Andreas Gustafsson , Mark Cave-Ayland , "Michael S . Tsirkin" , Richard Henderson , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , qemu-stable@nongnu.org, =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= <1892540@bugs.launchpad.net> Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" From: Philippe Mathieu-Daud=C3=A9 <1892540@bugs.launchpad.net> The S24/TCX datasheet is listed as "Unable to locate" on [1]. However the NetBSD revision 1.32 of the driver introduced 64-bit accesses to the stippler and blitter [2]. It is safe to assume these memory regions are 64-bit accessible. QEMU implementation is 32-bit, so fill the 'impl' fields. Michael Lorenz (author of the NetBSD code [2]) provided us with more information in [3]: > IIRC the real hardware *requires* 64bit accesses for stipple and > blitter operations to work. For stipples you write a 64bit word into > STIP space, the address defines where in the framebuffer you want to > draw, the data contain a 32bit bitmask, foreground colour and a ROP. > BLIT space works similarly, the 64bit word contains an offset were to > read pixels from, and how many you want to copy. > > One more thing since there seems to be some confusion - 64bit accesses > on the framebuffer are fine as well. TCX/S24 is *not* an SBus device, > even though its node says it is. > S24 is a card that plugs into a special slot on the SS5 mainboard, > which is shared with an SBus slot and looks a lot like a horizontal > UPA slot. Both S24 and TCX are accessed through the Micro/TurboSPARC's > AFX bus which is 64bit wide and intended for graphics. > Early FFB docs even mentioned connecting to both AFX and UPA, > no idea if that was ever realized in hardware though. [1] http://web.archive.org/web/20111209011516/http://wikis.sun.com/display/= FOSSdocs/Home [2] http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/sbus/tcx.c.diff?r1=3D1.= 31&r2=3D1.32 [3] https://www.mail-archive.com/qemu-devel@nongnu.org/msg734928.html Cc: qemu-stable@nongnu.org Reported-by: Andreas Gustafsson Buglink: https://bugs.launchpad.net/bugs/1892540 Fixes: 55d7bfe2293 ("tcx: Implement hardware acceleration") Tested-by: Michael S. Tsirkin Reviewed-by: Richard Henderson Tested-by: Andreas Gustafsson Signed-off-by: Philippe Mathieu-Daud=C3=A9 Message-Id: <20201024205100.3623006-1-f4bug@amsat.org> Signed-off-by: Mark Cave-Ayland --- hw/display/tcx.c | 18 +++++++++++++++--- 1 file changed, 15 insertions(+), 3 deletions(-) diff --git a/hw/display/tcx.c b/hw/display/tcx.c index c9d5e45cd1..878ecc8c50 100644 --- a/hw/display/tcx.c +++ b/hw/display/tcx.c @@ -549,20 +549,28 @@ static const MemoryRegionOps tcx_stip_ops =3D { .read =3D tcx_stip_readl, .write =3D tcx_stip_writel, .endianness =3D DEVICE_NATIVE_ENDIAN, - .valid =3D { + .impl =3D { .min_access_size =3D 4, .max_access_size =3D 4, }, + .valid =3D { + .min_access_size =3D 4, + .max_access_size =3D 8, + }, }; =20 static const MemoryRegionOps tcx_rstip_ops =3D { .read =3D tcx_stip_readl, .write =3D tcx_rstip_writel, .endianness =3D DEVICE_NATIVE_ENDIAN, - .valid =3D { + .impl =3D { .min_access_size =3D 4, .max_access_size =3D 4, }, + .valid =3D { + .min_access_size =3D 4, + .max_access_size =3D 8, + }, }; =20 static uint64_t tcx_blit_readl(void *opaque, hwaddr addr, @@ -651,10 +659,14 @@ static const MemoryRegionOps tcx_rblit_ops =3D { .read =3D tcx_blit_readl, .write =3D tcx_rblit_writel, .endianness =3D DEVICE_NATIVE_ENDIAN, - .valid =3D { + .impl =3D { .min_access_size =3D 4, .max_access_size =3D 4, }, + .valid =3D { + .min_access_size =3D 4, + .max_access_size =3D 8, + }, }; =20 static void tcx_invalidate_cursor_position(TCXState *s) --=20 2.20.1