From nobody Wed Feb 11 18:50:15 2026 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 004C3C6FD1C for ; Sat, 11 Mar 2023 13:39:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230000AbjCKNjJ (ORCPT ); Sat, 11 Mar 2023 08:39:09 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59288 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229957AbjCKNjF (ORCPT ); Sat, 11 Mar 2023 08:39:05 -0500 Received: from out5-smtp.messagingengine.com (out5-smtp.messagingengine.com [66.111.4.29]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 25F24120494; Sat, 11 Mar 2023 05:39:04 -0800 (PST) Received: from compute1.internal (compute1.nyi.internal [10.202.2.41]) by mailout.nyi.internal (Postfix) with ESMTP id 858BF5C00E8; Sat, 11 Mar 2023 08:39:03 -0500 (EST) Received: from mailfrontend2 ([10.202.2.163]) by compute1.internal (MEProxy); Sat, 11 Mar 2023 08:39:03 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=svenpeter.dev; h=cc:cc:content-transfer-encoding:content-type:date:date:from :from:in-reply-to:in-reply-to:message-id:mime-version:references :reply-to:sender:subject:subject:to:to; s=fm2; t=1678541943; x= 1678628343; bh=NLAAjqI5hAqO+6T5ybLfjafnBv2sskMvoLWugFUpxvk=; b=m sfuyDZ6xSrSyN9Bs0NFxcqy01mxu9waEbETR1YmpTJRfs0eMDUwM4pLgkCPwP3Eb HLJMZdVGiV5+SSyKqfbBMJPlZnzCCYUfMpIqp22dFQDbbBV3v3gkJwoAGtZksGaV /DenYe35jdZSHTuxlxr81Me+D2M1/cGDeR3WE55inEdr68ucK18flVcRhRJ+ByEf brk3rHVGGAF4UPVFcRBTb7rr47GLX/3cCAoz3nTZoEoaeIBswnDVaevXio82r2Px 0GCbf5yxLFAmd3ESJl40dlIEHTrzdtcni7EstHgP6LZMQJXqULK8+xxP/BlOJa9l yxLn/j/Dy4xlV0A5cfRiw== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:cc:content-transfer-encoding :content-type:date:date:feedback-id:feedback-id:from:from :in-reply-to:in-reply-to:message-id:mime-version:references :reply-to:sender:subject:subject:to:to:x-me-proxy:x-me-proxy :x-me-sender:x-me-sender:x-sasl-enc; s=fm2; t=1678541943; x= 1678628343; bh=NLAAjqI5hAqO+6T5ybLfjafnBv2sskMvoLWugFUpxvk=; b=A UsB758ypS4D8RDAwC5ujxUdLmi7kpaEPNR4YVak6988PrG4eldZcFkxiDuqjoZ+b zvhcXqnsnw2evLT53FP4wp4iYmcJOFJFjA75Df1sbR4vOCQjcExNthoouXLQM+yC cWsETBinXc5VAcH8mGr2Ld+k+WMsq3W5BwSreUVx3Eqmy2nqSnkdmlZeAHvX0dwH oujoX/T2Bjas2s6Cr/fBJD6jqDsz+16oXqZuyHMCOTi7ZKGDcBRpORPUn/FWFQpN QQCUVgalS1ci7iv3mnF85dw7yuTdr0LHsan3BYSNo2CGRiyD3kWChTnv90VT3z6L IuHsIsehiXuEZj+WaRGSQ== X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvhedrvddvtddgfedtucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucesvcftvggtihhpihgvnhhtshculddquddttddmne cujfgurhephffvvefufffkofgjfhgggfestdekredtredttdenucfhrhhomhepufhvvghn ucfrvghtvghruceoshhvvghnsehsvhgvnhhpvghtvghrrdguvghvqeenucggtffrrghtth gvrhhnpeejieehheekgedvjefhveekjefguddtfefhteehtdeiffelkeeiuedufeelkeej geenucevlhhushhtvghrufhiiigvpedtnecurfgrrhgrmhepmhgrihhlfhhrohhmpehsvh gvnhesshhvvghnphgvthgvrhdruggvvh X-ME-Proxy: Feedback-ID: i51094778:Fastmail Received: by mail.messagingengine.com (Postfix) with ESMTPA; Sat, 11 Mar 2023 08:39:01 -0500 (EST) From: Sven Peter To: Hector Martin , Sven Peter , Rob Herring , Krzysztof Kozlowski Cc: Alyssa Rosenzweig , Joerg Roedel , Will Deacon , Robin Murphy , linux-arm-kernel@lists.infradead.org, asahi@lists.linux.dev, iommu@lists.linux.dev, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Rob Herring Subject: [PATCH v3 1/3] dt-bindings: iommu: dart: Add t8103-usb4-dart compatible Date: Sat, 11 Mar 2023 14:38:54 +0100 Message-Id: <20230311133856.63840-2-sven@svenpeter.dev> X-Mailer: git-send-email 2.30.1 (Apple Git-130) In-Reply-To: <20230311133856.63840-1-sven@svenpeter.dev> References: <20230311133856.63840-1-sven@svenpeter.dev> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" This DART variant is found in the t8103 (M1) SoCs and used for the USB4/Thunderbolt PCIe ports. Unlike the regular t8103 DART these support up to 64 SIDs and require a slightly different MMIO layout. Acked-by: Hector Martin Acked-by: Rob Herring Signed-off-by: Sven Peter Reviewed-by: Mark Kettenis --- Documentation/devicetree/bindings/iommu/apple,dart.yaml | 1 + 1 file changed, 1 insertion(+) diff --git a/Documentation/devicetree/bindings/iommu/apple,dart.yaml b/Docu= mentation/devicetree/bindings/iommu/apple,dart.yaml index 903edf85d72e..7adb1de455a5 100644 --- a/Documentation/devicetree/bindings/iommu/apple,dart.yaml +++ b/Documentation/devicetree/bindings/iommu/apple,dart.yaml @@ -24,6 +24,7 @@ properties: compatible: enum: - apple,t8103-dart + - apple,t8103-usb4-dart - apple,t8110-dart - apple,t6000-dart =20 --=20 2.25.1 From nobody Wed Feb 11 18:50:15 2026 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id C91AFC6FD1F for ; Sat, 11 Mar 2023 13:39:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230063AbjCKNjQ (ORCPT ); Sat, 11 Mar 2023 08:39:16 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59450 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229998AbjCKNjH (ORCPT ); Sat, 11 Mar 2023 08:39:07 -0500 Received: from out5-smtp.messagingengine.com (out5-smtp.messagingengine.com [66.111.4.29]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8E73A1204BC; Sat, 11 Mar 2023 05:39:06 -0800 (PST) Received: from compute6.internal (compute6.nyi.internal [10.202.2.47]) by mailout.nyi.internal (Postfix) with ESMTP id CE6C35C00EA; Sat, 11 Mar 2023 08:39:05 -0500 (EST) Received: from mailfrontend2 ([10.202.2.163]) by compute6.internal (MEProxy); Sat, 11 Mar 2023 08:39:05 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=svenpeter.dev; h=cc:cc:content-transfer-encoding:content-type:date:date:from :from:in-reply-to:in-reply-to:message-id:mime-version:references :reply-to:sender:subject:subject:to:to; s=fm2; t=1678541945; x= 1678628345; bh=Mb4+mJwB9+LzuGO9Ggk72OOMawB9qgwmFuhWOsw7aP4=; b=U G4Qt1C3qNvQ4eS4ZygEkSYDQSVWu69siFHSTTejTJLT2+xUEyXfaH/zui3oOpNSa tRLOedAAB9OVKxBueQ1zqtpeKBA6m/DFVXFxvxxRMDMv+dsmFafR9mQ+uJv+bMep o7K41ngxxW7Zj9KWuO08zS6+LOlnPuRWE9kMi/ZlwvAl+C2X9YShncPYaXsHdJR/ JbCKkpc+TyDknYdw6abhj3ur6iquyEy/mFZXVwkvtap7nLgM5buXcgZSjmCgVENx gxLs0GpiKv7FhkmId8YJ9vc0dJ7WYbJN4Q0PSDof0YcMgXO4aXY+fHex/r8VCYZY OkVYtW04Iogh7j98h4/Hw== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:cc:content-transfer-encoding :content-type:date:date:feedback-id:feedback-id:from:from :in-reply-to:in-reply-to:message-id:mime-version:references :reply-to:sender:subject:subject:to:to:x-me-proxy:x-me-proxy :x-me-sender:x-me-sender:x-sasl-enc; s=fm2; t=1678541945; x= 1678628345; bh=Mb4+mJwB9+LzuGO9Ggk72OOMawB9qgwmFuhWOsw7aP4=; b=A Qo+JKgxfrPg7AL9JYNClLePLxZ5HlQec6TDPmHsDIUgAC4RBxvTAuHouTKsR/tYn 4X/uBb5OK0Ka+MpBDr7I57rZ3px1vMTbuZZftfbv6j0ms3nsx9Ymtvi2ReEFbp7E gJKx9HAtm5mA1vzeNoQnyTG+4hjNA49drTua57yxZzbIabHFX6ylerT/ODfQXHJY +WjBz30YzVOMl5eBd62EVnpdMY7/fgbf4fZDqOgH7AdoZf+mNLum3dH2zTzPm2+X GCmEw+mIiKhndyUJT4531OYZpn1BDXINtfhBdsD5wd160n9iyhlfEyf96pPA4LCZ AdOPaIS8IiQPwjOA9XVqA== X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvhedrvddvtddgfedtucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucesvcftvggtihhpihgvnhhtshculddquddttddmne cujfgurhephffvvefufffkofgjfhgggfestdekredtredttdenucfhrhhomhepufhvvghn ucfrvghtvghruceoshhvvghnsehsvhgvnhhpvghtvghrrdguvghvqeenucggtffrrghtth gvrhhnpeejieehheekgedvjefhveekjefguddtfefhteehtdeiffelkeeiuedufeelkeej geenucevlhhushhtvghrufhiiigvpedtnecurfgrrhgrmhepmhgrihhlfhhrohhmpehsvh gvnhesshhvvghnphgvthgvrhdruggvvh X-ME-Proxy: Feedback-ID: i51094778:Fastmail Received: by mail.messagingengine.com (Postfix) with ESMTPA; Sat, 11 Mar 2023 08:39:03 -0500 (EST) From: Sven Peter To: Hector Martin , Sven Peter , Joerg Roedel , Will Deacon , Robin Murphy Cc: Rob Herring , Krzysztof Kozlowski , Alyssa Rosenzweig , linux-arm-kernel@lists.infradead.org, asahi@lists.linux.dev, iommu@lists.linux.dev, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v3 2/3] iommu: dart: Write to all DART_T8020_STREAM_SELECT Date: Sat, 11 Mar 2023 14:38:55 +0100 Message-Id: <20230311133856.63840-3-sven@svenpeter.dev> X-Mailer: git-send-email 2.30.1 (Apple Git-130) In-Reply-To: <20230311133856.63840-1-sven@svenpeter.dev> References: <20230311133856.63840-1-sven@svenpeter.dev> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" We're about to add support for a DART variant that use more than 16 streams and requires writing to two separate stream select registers when issuing TLB flushes. Acked-by: Hector Martin Signed-off-by: Sven Peter --- drivers/iommu/apple-dart.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/iommu/apple-dart.c b/drivers/iommu/apple-dart.c index 74a367302d34..f73d0288e133 100644 --- a/drivers/iommu/apple-dart.c +++ b/drivers/iommu/apple-dart.c @@ -370,12 +370,14 @@ apple_dart_t8020_hw_stream_command(struct apple_dart_= stream_map *stream_map, u32 command) { unsigned long flags; - int ret; + int ret, i; u32 command_reg; =20 spin_lock_irqsave(&stream_map->dart->lock, flags); =20 - writel(stream_map->sidmap[0], stream_map->dart->regs + DART_T8020_STREAM_= SELECT); + for (i =3D 0; i < BITS_TO_U32(stream_map->dart->num_streams); i++) + writel(stream_map->sidmap[i], + stream_map->dart->regs + DART_T8020_STREAM_SELECT + 4 * i); writel(command, stream_map->dart->regs + DART_T8020_STREAM_COMMAND); =20 ret =3D readl_poll_timeout_atomic( --=20 2.25.1 From nobody Wed Feb 11 18:50:15 2026 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id CAB3CC6FD1C for ; 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Sat, 11 Mar 2023 08:39:05 -0500 (EST) From: Sven Peter To: Hector Martin , Sven Peter , Joerg Roedel , Will Deacon , Robin Murphy Cc: Rob Herring , Krzysztof Kozlowski , Alyssa Rosenzweig , linux-arm-kernel@lists.infradead.org, asahi@lists.linux.dev, iommu@lists.linux.dev, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v3 3/3] iommu: dart: Add support for t8103 USB4 DART Date: Sat, 11 Mar 2023 14:38:56 +0100 Message-Id: <20230311133856.63840-4-sven@svenpeter.dev> X-Mailer: git-send-email 2.30.1 (Apple Git-130) In-Reply-To: <20230311133856.63840-1-sven@svenpeter.dev> References: <20230311133856.63840-1-sven@svenpeter.dev> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" This variant of the regular t8103 DART is used for the two USB4/Thunderbolt PCIe controllers. It supports 64 instead of 16 streams which requires a slightly different MMIO layout. Acked-by: Hector Martin Signed-off-by: Sven Peter --- drivers/iommu/apple-dart.c | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) diff --git a/drivers/iommu/apple-dart.c b/drivers/iommu/apple-dart.c index f73d0288e133..23f79659a48b 100644 --- a/drivers/iommu/apple-dart.c +++ b/drivers/iommu/apple-dart.c @@ -81,6 +81,7 @@ #define DART_T8020_TCR_BYPASS_DAPF BIT(12) =20 #define DART_T8020_TTBR 0x200 +#define DART_T8020_USB4_TTBR 0x400 #define DART_T8020_TTBR_VALID BIT(31) #define DART_T8020_TTBR_ADDR_FIELD_SHIFT 0 #define DART_T8020_TTBR_SHIFT 12 @@ -1192,6 +1193,33 @@ static const struct apple_dart_hw apple_dart_hw_t810= 3 =3D { .ttbr_shift =3D DART_T8020_TTBR_SHIFT, .ttbr_count =3D 4, }; + +static const struct apple_dart_hw apple_dart_hw_t8103_usb4 =3D { + .type =3D DART_T8020, + .irq_handler =3D apple_dart_t8020_irq, + .invalidate_tlb =3D apple_dart_t8020_hw_invalidate_tlb, + .oas =3D 36, + .fmt =3D APPLE_DART, + .max_sid_count =3D 64, + + .enable_streams =3D DART_T8020_STREAMS_ENABLE, + .lock =3D DART_T8020_CONFIG, + .lock_bit =3D DART_T8020_CONFIG_LOCK, + + .error =3D DART_T8020_ERROR, + + .tcr =3D DART_T8020_TCR, + .tcr_enabled =3D DART_T8020_TCR_TRANSLATE_ENABLE, + .tcr_disabled =3D 0, + .tcr_bypass =3D 0, + + .ttbr =3D DART_T8020_USB4_TTBR, + .ttbr_valid =3D DART_T8020_TTBR_VALID, + .ttbr_addr_field_shift =3D DART_T8020_TTBR_ADDR_FIELD_SHIFT, + .ttbr_shift =3D DART_T8020_TTBR_SHIFT, + .ttbr_count =3D 4, +}; + static const struct apple_dart_hw apple_dart_hw_t6000 =3D { .type =3D DART_T6000, .irq_handler =3D apple_dart_t8020_irq, @@ -1292,6 +1320,7 @@ DEFINE_SIMPLE_DEV_PM_OPS(apple_dart_pm_ops, apple_dar= t_suspend, apple_dart_resum =20 static const struct of_device_id apple_dart_of_match[] =3D { { .compatible =3D "apple,t8103-dart", .data =3D &apple_dart_hw_t8103 }, + { .compatible =3D "apple,t8103-usb4-dart", .data =3D &apple_dart_hw_t8103= _usb4 }, { .compatible =3D "apple,t8110-dart", .data =3D &apple_dart_hw_t8110 }, { .compatible =3D "apple,t6000-dart", .data =3D &apple_dart_hw_t6000 }, {}, --=20 2.25.1