From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-11.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 20856C433B4 for ; Mon, 19 Apr 2021 09:45:04 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id A65F961073 for ; Mon, 19 Apr 2021 09:45:03 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A65F961073 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=amsat.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:35580 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lYQSk-0003WK-OJ for qemu-devel@archiver.kernel.org; Mon, 19 Apr 2021 05:45:02 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:52288) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lYQRM-0001ok-G8; Mon, 19 Apr 2021 05:43:36 -0400 Received: from mail-wm1-x32a.google.com ([2a00:1450:4864:20::32a]:44546) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1lYQRK-0002u4-QL; Mon, 19 Apr 2021 05:43:36 -0400 Received: by mail-wm1-x32a.google.com with SMTP id f195-20020a1c1fcc0000b029012eb88126d7so7717665wmf.3; Mon, 19 Apr 2021 02:43:33 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=UqblqeEaUSfpb53UOOnTzqXwtcfVngamQsYUMLNIW4o=; b=OJStVtAB6cXd3h28+bg1QYQ912OI+n5rVboxcoOnl053pVVhgBHbpjY2DgaXL+/Xhb 5wOGS6R+m9HKti080Zf9xA9KRlFnkBIfxbjp3guPuywOgAhdlPz96QNbQ/D4tlw7gIss ICXQJaB3oPF5UC9j1F67GEy8n6sZvVFWEy1fVI0Ew6OqGqPLrLnobe+Rm/Z1rQ9UeGjx s01x1jsgU1kOSR8zN0PdzVFSSF3DEwttSnsZuAjLdGBcrxZhmMp8GxKOt5uHqgwM6BBB xLNifw9kz3izsOKG3+Ul3IQfcJQxN0lyP88Jdhe0dVE6WPWPf1jkVXFI9zJ+gp8M4R+l yIwQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:from:to:cc:subject:date:message-id :mime-version:content-transfer-encoding; bh=UqblqeEaUSfpb53UOOnTzqXwtcfVngamQsYUMLNIW4o=; b=FqX4FlGtfxFgoFQy8oKoQX2Ig2QqRtl7TzKADW+c/hQSi7+zHaMFa1cKLb/iLBAxiy 8UQQeHdRF+QGgWNqf+JP7Su/xH1G1RJ23CHBQJNQNmis1h2JSA/QU2ISggLN/ZKxAecX f4UoTWB3bOxD5+bTdoPUyFzqZb8WLy4FaIOsEAPvc/Dyj1k2pNKdh7GHZQD9q3h1i41m J3tDE2Qw8vSOUW8qGXmgUXt7ted6DNmAK6mMlM/dpv24Ts0en4wFZ05dXJT7qA0C4AGv EEiFQbyl5ztJPNX4RhvmeE6k9YRYGXe0lQCZzDB2pwZ+3Mzt3IfKBWRvIRe4G/nphI62 Fo+A== X-Gm-Message-State: AOAM532PcG5L8Rsx9OnCCsIzh4FkYhNzXkKJLBASzKJUJ6X+xD+KPlCu HGmzaxBvGnCFH+AYgNcObEq/QnFqMN2+EA== X-Google-Smtp-Source: ABdhPJxLKI+PsgVrh8CA23nbbfavDVIDeKihhBMi0aadgYnQyUzj5XheY2NeKtZOt1ER7rW3kR4Glw== X-Received: by 2002:a7b:c4d5:: with SMTP id g21mr20112628wmk.55.1618825411792; Mon, 19 Apr 2021 02:43:31 -0700 (PDT) Received: from localhost.localdomain (39.red-81-40-121.staticip.rima-tde.net. [81.40.121.39]) by smtp.gmail.com with ESMTPSA id z17sm22634798wro.1.2021.04.19.02.43.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 19 Apr 2021 02:43:31 -0700 (PDT) From: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= To: qemu-devel@nongnu.org Subject: [PATCH v2 0/7] hw/misc: Add memory_region_add_subregion_aliased() helper [pflash part] Date: Mon, 19 Apr 2021 11:43:22 +0200 Message-Id: <20210419094329.1402767-1-f4bug@amsat.org> X-Mailer: git-send-email 2.26.3 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass client-ip=2a00:1450:4864:20::32a; envelope-from=philippe.mathieu.daude@gmail.com; helo=mail-wm1-x32a.google.com X-Spam_score_int: -14 X-Spam_score: -1.5 X-Spam_bar: - X-Spam_report: (-1.5 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FORGED_FROMDOMAIN=0.249, FREEMAIL_FROM=0.001, HEADER_FROM_DIFFERENT_DOMAINS=0.249, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no 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: Stephen Checkoway , qemu-block@nongnu.org, Richard Henderson , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , David Edmondson , qemu-arm@nongnu.org Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Hi,=0D =0D This series introduce the memory_region_add_subregion_aliased()=0D helper which basically create a device which maps a subregion=0D multiple times.=0D =0D Since v1:=0D - Split series in 2, keeping the I/O regions (showed with the q800=0D machine) part for 2nd part=0D - Added R-b tags=0D =0D Examples are easier, so having a subregion aliased every @span_size=0D then mapped onto a container at an offset, you get something like:=0D =0D ^-----------^=0D | |=0D | |=0D | +-------+ | +---------+ <--+=0D | | +---------+ |=0D | | | | |=0D | | +-----------> | alias#3 | |=0D | | | | | |=0D | | | +---------+ |=0D | | | +---------+ |=0D | | | | | |=0D | | | +-------> | alias#2 | |=0D | | | | | | |region=0D | container | | | +---------+ | size=0D | | | | +---------+ |=0D | | | | | | |=0D | | | | +----> | alias#1 | |=0D | | | | | | | |=0D | | | | | +---------+ <--+ |=0D | | +-+---+--+--+ +---------+ | |=0D | | | | | | |span |=0D | | | subregion +-> | alias#0 | |size |=0D offset | | | | | | | |=0D +----> | +-------+ | +-----------+ +---------+ <--+ <--+=0D | | |=0D | | |=0D | | |=0D | | |=0D | | |=0D | ^-----------^=0D =0D I know it need more documentation and tests, but I prefer to send=0D as draft RFC for early review before spending more time on it.=0D =0D Supersedes: <20210326002728.1069834-1-f4bug@amsat.org>=0D Based-on: <20210325120921.858993-1-f4bug@amsat.org>=0D https://www.mail-archive.com/qemu-devel@nongnu.org/msg795218.html=0D =0D Philippe Mathieu-Daud=C3=A9 (7):=0D hw/misc: Add device to help managing aliased memory regions=0D hw/arm/musicpal: Open-code pflash_cfi02_register() call=0D hw/arm/musicpal: Map flash using memory_region_add_subregion_aliased()=0D hw/arm/digic: Open-code pflash_cfi02_register() call=0D hw/arm/digic: Map flash using memory_region_add_subregion_aliased()=0D hw/block/pflash_cfi02: Remove pflash_setup_mappings()=0D hw/block/pflash_cfi02: Simplify pflash_cfi02_register() prototype=0D =0D include/hw/block/flash.h | 1 -=0D include/hw/misc/aliased_region.h | 87 ++++++++++++++++++++=0D hw/arm/digic_boards.c | 28 +++++--=0D hw/arm/musicpal.c | 29 +++++--=0D hw/arm/xilinx_zynq.c | 2 +-=0D hw/block/pflash_cfi02.c | 36 +--------=0D hw/lm32/lm32_boards.c | 4 +-=0D hw/misc/aliased_region.c | 132 +++++++++++++++++++++++++++++++=0D hw/ppc/ppc405_boards.c | 6 +-=0D hw/sh4/r2d.c | 2 +-=0D MAINTAINERS | 6 ++=0D hw/arm/Kconfig | 2 +=0D hw/misc/Kconfig | 3 +=0D hw/misc/meson.build | 1 +=0D 14 files changed, 285 insertions(+), 54 deletions(-)=0D create mode 100644 include/hw/misc/aliased_region.h=0D create mode 100644 hw/misc/aliased_region.c=0D =0D -- =0D 2.26.3=0D =0D