From nobody Thu Dec 18 04:51:15 2025 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 ED95CC4167B for ; Fri, 8 Dec 2023 10:39:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1573708AbjLHKjX (ORCPT ); Fri, 8 Dec 2023 05:39:23 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40010 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1573764AbjLHKjC (ORCPT ); Fri, 8 Dec 2023 05:39:02 -0500 Received: from esa.microchip.iphmx.com (esa.microchip.iphmx.com [68.232.153.233]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1D6BD1BE3; Fri, 8 Dec 2023 02:38:40 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1702031921; x=1733567921; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=2EQm1WbcHBB0qSzV6W9atlXp3QWQx/LQ8hNLQCOVPww=; b=XjMLrnR1BYOfqjIMufW5l5GNysiZ/p3l3qfCBzhheGmQQDKaZTid1kdl vQGPLV92AvzViZSt53UnpcaSkybXLtT08jsr0lcTZhs6G6B16i7wXPf+0 f9cviRjtNL1XyiJRUD248lHfCC3Ed3FzbVRyZ3pMZYdmryhL22EGszAL9 +AvbrT+Pakq+pjArkK4+Un3bJ8X2VWI7SHd+F1Nr2+5qAsvirrEVY3LQP bwDyO6FMH+I8iHC3BkPuTvSTvnWqcTgoMVUn2nJh4SBc3piSqoJN9A8MV 64SoeYeSXJKIYsqJ5gg0rjrFO99xx6/i77zJM7Ghq66pBh8QlbxEGE5+2 Q==; X-CSE-ConnectionGUID: Cvz3gSbpStiroKFn2Lwqew== X-CSE-MsgGUID: TlwQAlMGSYWg/x1j129+hg== X-ThreatScanner-Verdict: Negative X-IronPort-AV: E=Sophos;i="6.04,260,1695711600"; d="scan'208";a="13864089" X-Amp-Result: SKIPPED(no attachment in message) Received: from unknown (HELO email.microchip.com) ([170.129.1.10]) by esa1.microchip.iphmx.com with ESMTP/TLS/ECDHE-RSA-AES128-GCM-SHA256; 08 Dec 2023 03:38:40 -0700 Received: from chn-vm-ex03.mchp-main.com (10.10.85.151) by chn-vm-ex02.mchp-main.com (10.10.85.144) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.35; Fri, 8 Dec 2023 03:38:04 -0700 Received: from microchip1-OptiPlex-9020.microchip.com (10.10.85.11) by chn-vm-ex03.mchp-main.com (10.10.85.151) with Microsoft SMTP Server id 15.1.2507.35 via Frontend Transport; Fri, 8 Dec 2023 03:37:59 -0700 From: shravan chippa To: , , , , , , CC: , , , , , , , Emil Renner Berthing Subject: [PATCH v5 3/4] dmaengine: sf-pdma: add mpfs-pdma compatible name Date: Fri, 8 Dec 2023 16:08:55 +0530 Message-ID: <20231208103856.3732998-4-shravan.chippa@microchip.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20231208103856.3732998-1-shravan.chippa@microchip.com> References: <20231208103856.3732998-1-shravan.chippa@microchip.com> 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" From: Shravan Chippa Sifive platform dma (sf-pdma) has both in-order and out-of-order configurations but sf-pdam driver configured to do in-order DMA transfers, with out-of-order configuration got better throughput in the PolarFire SoC platform. Add a PolarFire SoC specific compatible and code to support for out-of-order dma transfers Reviewed-by: Emil Renner Berthing Signed-off-by: Shravan Chippa --- drivers/dma/sf-pdma/sf-pdma.c | 27 ++++++++++++++++++++++++--- drivers/dma/sf-pdma/sf-pdma.h | 8 +++++++- 2 files changed, 31 insertions(+), 4 deletions(-) diff --git a/drivers/dma/sf-pdma/sf-pdma.c b/drivers/dma/sf-pdma/sf-pdma.c index 6109e1c5a09e..428473611115 100644 --- a/drivers/dma/sf-pdma/sf-pdma.c +++ b/drivers/dma/sf-pdma/sf-pdma.c @@ -25,6 +25,8 @@ =20 #include "sf-pdma.h" =20 +#define PDMA_QUIRK_NO_STRICT_ORDERING BIT(0) + #ifndef readq static inline unsigned long long readq(void __iomem *addr) { @@ -66,7 +68,7 @@ static struct sf_pdma_desc *sf_pdma_alloc_desc(struct sf_= pdma_chan *chan) static void sf_pdma_fill_desc(struct sf_pdma_desc *desc, u64 dst, u64 src, u64 size) { - desc->xfer_type =3D PDMA_FULL_SPEED; + desc->xfer_type =3D desc->chan->pdma->transfer_type; desc->xfer_size =3D size; desc->dst_addr =3D dst; desc->src_addr =3D src; @@ -493,6 +495,7 @@ static void sf_pdma_setup_chans(struct sf_pdma *pdma) =20 static int sf_pdma_probe(struct platform_device *pdev) { + const struct sf_pdma_driver_platdata *ddata; struct sf_pdma *pdma; int ret, n_chans; const enum dma_slave_buswidth widths =3D @@ -518,6 +521,14 @@ static int sf_pdma_probe(struct platform_device *pdev) =20 pdma->n_chans =3D n_chans; =20 + pdma->transfer_type =3D PDMA_FULL_SPEED | PDMA_STRICT_ORDERING; + + ddata =3D device_get_match_data(&pdev->dev); + if (ddata) { + if (ddata->quirks & PDMA_QUIRK_NO_STRICT_ORDERING) + pdma->transfer_type &=3D ~PDMA_STRICT_ORDERING; + } + pdma->membase =3D devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(pdma->membase)) return PTR_ERR(pdma->membase); @@ -603,9 +614,19 @@ static void sf_pdma_remove(struct platform_device *pde= v) dma_async_device_unregister(&pdma->dma_dev); } =20 +static const struct sf_pdma_driver_platdata mpfs_pdma =3D { + .quirks =3D PDMA_QUIRK_NO_STRICT_ORDERING, +}; + static const struct of_device_id sf_pdma_dt_ids[] =3D { - { .compatible =3D "sifive,fu540-c000-pdma" }, - { .compatible =3D "sifive,pdma0" }, + { + .compatible =3D "sifive,fu540-c000-pdma", + }, { + .compatible =3D "sifive,pdma0", + }, { + .compatible =3D "microchip,mpfs-pdma", + .data =3D &mpfs_pdma, + }, {}, }; MODULE_DEVICE_TABLE(of, sf_pdma_dt_ids); diff --git a/drivers/dma/sf-pdma/sf-pdma.h b/drivers/dma/sf-pdma/sf-pdma.h index d05772b5d8d3..215e07183d7e 100644 --- a/drivers/dma/sf-pdma/sf-pdma.h +++ b/drivers/dma/sf-pdma/sf-pdma.h @@ -48,7 +48,8 @@ #define PDMA_ERR_STATUS_MASK GENMASK(31, 31) =20 /* Transfer Type */ -#define PDMA_FULL_SPEED 0xFF000008 +#define PDMA_FULL_SPEED 0xFF000000 +#define PDMA_STRICT_ORDERING BIT(3) =20 /* Error Recovery */ #define MAX_RETRY 1 @@ -112,8 +113,13 @@ struct sf_pdma { struct dma_device dma_dev; void __iomem *membase; void __iomem *mappedbase; + u32 transfer_type; u32 n_chans; struct sf_pdma_chan chans[] __counted_by(n_chans); }; =20 +struct sf_pdma_driver_platdata { + u32 quirks; +}; + #endif /* _SF_PDMA_H */ --=20 2.34.1