From patchwork Wed May 4 13:40:26 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jocelyn Falempe X-Patchwork-Id: 12837959 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 0A89DC433F5 for ; Wed, 4 May 2022 13:41:02 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id B7D7B10ECF3; Wed, 4 May 2022 13:41:00 +0000 (UTC) Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by gabe.freedesktop.org (Postfix) with ESMTPS id 21D7E10F0C9 for ; Wed, 4 May 2022 13:40:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1651671658; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=3E2rsJXZMfi5AGg/cyIGaUPfUdjTHQuGFK+mlvzyolY=; b=aVPGydDxUIFslISKoXor8JoqPR+4WqFM5x/IL3yFhrzcg/RMBeodBLa0N/weEvwNzUnN8t Hy3ONHVy0gdBuH3k6+PEB0q56IEdtrUvXXi4lYkOCXKs9zU3xE6r7hRBIrZYZDMWBwQFy/ wYz6pNe99y6aMjgb8CXCvyGAbWfe6QA= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-479-QzDcj9vwPYeUODNdjPkflg-1; Wed, 04 May 2022 09:40:52 -0400 X-MC-Unique: QzDcj9vwPYeUODNdjPkflg-1 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.rdu2.redhat.com [10.11.54.8]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id E5BF9185A7A4; Wed, 4 May 2022 13:40:51 +0000 (UTC) Received: from hydra.redhat.com (unknown [10.39.193.180]) by smtp.corp.redhat.com (Postfix) with ESMTP id CABD6C28101; Wed, 4 May 2022 13:40:50 +0000 (UTC) From: Jocelyn Falempe To: dri-devel@lists.freedesktop.org, lyude@redhat.com, tzimmermann@suse.de Subject: [PATCH v2 3/3] mgag200: Warn once if trying to set start address on broken hardware. Date: Wed, 4 May 2022 15:40:26 +0200 Message-Id: <20220504134026.283417-4-jfalempe@redhat.com> In-Reply-To: <20220504134026.283417-1-jfalempe@redhat.com> References: <20220504134026.283417-1-jfalempe@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.85 on 10.11.54.8 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=jfalempe@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jocelyn Falempe , michel@daenzer.net Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Some MGA200 hardware are broken, and can't use a start address > 0 v2: Warn if startaddr is not 0, and hw doesn't support it. (instead of removing MGAG200_FLAG_HW_BUG_NO_STARTADD) Signed-off-by: Jocelyn Falempe --- drivers/gpu/drm/mgag200/mgag200_mode.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/mgag200/mgag200_mode.c b/drivers/gpu/drm/mgag200/mgag200_mode.c index 2bc380a85996..d2cf26b3cee0 100644 --- a/drivers/gpu/drm/mgag200/mgag200_mode.c +++ b/drivers/gpu/drm/mgag200/mgag200_mode.c @@ -223,6 +223,9 @@ static void mgag200_set_startadd(struct mga_device *mdev, startadd = offset / 8; + if (startadd > 0) + drm_WARN_ON_ONCE(dev, mdev->flags & MGAG200_FLAG_HW_BUG_NO_STARTADD); + /* * Can't store addresses any higher than that, but we also * don't have more than 16 MiB of memory, so it should be fine.