From patchwork Tue Oct 3 04:22:14 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: shravan kumar X-Patchwork-Id: 13406747 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 1120EE776FD for ; Tue, 3 Oct 2023 04:22:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=Hm5reNQaKKlacmK6sq5bH2nS896O5bVDbCS45z7TnEs=; b=fdCUkQTkAMOQpt v6nkA6vUn71bwX/xyGZWrzuvy7m7Pb+n0WqzJuXQo3RToiIzeYxooR+dadv6e+ebyIuGXsbA/MnsZ G+2TMYX2K999UXviSAXfSvoxsCS74VF4y3sH/ktSuY2WQs0dtymE9yiFUzjbNsmNW3oRtcctG4QkM Ni5SiaMF0NsJ1CdDJc3Jct3wQ9bqbtX11sKtxkcv9uHTi1XQH52s4W8cYzlbMKZtvpEmuokyoXNYh 0dgZ/nNNxGfMr9mpNFHpLWg7nTbKYj1Icy/PjI0U8JAHz+qmoDtPJ4sehRh3zZ9x6tjLK8zQzbqsr mKrUSdjRtnAeaRYzwZeA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qnWvB-00Dm6a-2L; Tue, 03 Oct 2023 04:22:09 +0000 Received: from esa.microchip.iphmx.com ([68.232.154.123]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qnWv7-00Dm58-02 for linux-riscv@lists.infradead.org; Tue, 03 Oct 2023 04:22:08 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1696306924; x=1727842924; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=UxIXasS2OTVy/F2KygXVSkU+5jJ464D8P3BNT5N73Ss=; b=pb+cpIeasPVzHmMZP1KRQG+Zf1CEq0qf9vwGKz/hXSLz57+TbomifYRK 5npRuY/arI8vmhuf5AugKknxYITcDPbK7stdtqpSGM4b9ysSb5hY4wDBf XwvRhzrmJknUU+EWwsTxP6zQ4pq4c1EjB3gCUsIq6IW/69smOeedOuxuf E/CRZ+4wMdxVHqkzmXQ3ZODNMUQwQJU6WrxNLDdechxTXWi0GMefHd+Og ik4cLtCxXEGxSuDyrvT/q2qfeBKO0zallLVykAghUtSZ4qqLFzNzn2KZf umlSe/GfO83GZVlQ81GSIhuk2tnu0CoVT+H23x84kkq3Ak/l+L0lRJ9Dm g==; X-CSE-ConnectionGUID: CfTVgEzCTm6iPkFhghp5JA== X-CSE-MsgGUID: i4Wnc6pNSb+uhGmwA9d/zg== X-ThreatScanner-Verdict: Negative X-IronPort-AV: E=Sophos;i="6.03,196,1694761200"; d="scan'208";a="7623120" X-Amp-Result: SKIPPED(no attachment in message) Received: from unknown (HELO email.microchip.com) ([170.129.1.10]) by esa4.microchip.iphmx.com with ESMTP/TLS/ECDHE-RSA-AES128-GCM-SHA256; 02 Oct 2023 21:22:02 -0700 Received: from chn-vm-ex02.mchp-main.com (10.10.85.144) by chn-vm-ex01.mchp-main.com (10.10.85.143) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.21; Mon, 2 Oct 2023 21:21:21 -0700 Received: from microchip1-OptiPlex-9020.microchip.com (10.10.85.11) by chn-vm-ex02.mchp-main.com (10.10.85.144) with Microsoft SMTP Server id 15.1.2507.21 via Frontend Transport; Mon, 2 Oct 2023 21:21:16 -0700 From: shravan chippa To: , , , , , , CC: , , , , , , Subject: [PATCH v2 3/4] dmaengine: sf-pdma: add mpfs-pdma compatible name Date: Tue, 3 Oct 2023 09:52:14 +0530 Message-ID: <20231003042215.142678-4-shravan.chippa@microchip.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20231003042215.142678-1-shravan.chippa@microchip.com> References: <20231003042215.142678-1-shravan.chippa@microchip.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20231002_212205_154405_38FA8985 X-CRM114-Status: GOOD ( 16.12 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org From: Shravan Chippa Sifive platform dma does not allow out-of-order transfers, Add a PolarFire SoC specific compatible and code to support for out-of-order dma transfers Signed-off-by: Shravan Chippa --- drivers/dma/sf-pdma/sf-pdma.c | 27 ++++++++++++++++++++++++--- drivers/dma/sf-pdma/sf-pdma.h | 6 ++++++ 2 files changed, 30 insertions(+), 3 deletions(-) diff --git a/drivers/dma/sf-pdma/sf-pdma.c b/drivers/dma/sf-pdma/sf-pdma.c index 06a0912a12a1..a9ff319d4ca3 100644 --- a/drivers/dma/sf-pdma/sf-pdma.c +++ b/drivers/dma/sf-pdma/sf-pdma.c @@ -21,6 +21,7 @@ #include #include #include +#include #include #include "sf-pdma.h" @@ -66,7 +67,7 @@ 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 = PDMA_FULL_SPEED; + desc->xfer_type = desc->chan->pdma->transfer_type; desc->xfer_size = size; desc->dst_addr = dst; desc->src_addr = src; @@ -520,6 +521,7 @@ static struct dma_chan *sf_pdma_of_xlate(struct of_phandle_args *dma_spec, 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 = @@ -545,6 +547,14 @@ static int sf_pdma_probe(struct platform_device *pdev) pdma->n_chans = n_chans; + pdma->transfer_type = PDMA_FULL_SPEED; + + ddata = of_device_get_match_data(&pdev->dev); + if (ddata) { + if (ddata->quirks & NO_STRICT_ORDERING) + pdma->transfer_type &= ~(NO_STRICT_ORDERING); + } + pdma->membase = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(pdma->membase)) return PTR_ERR(pdma->membase); @@ -632,11 +642,22 @@ static int sf_pdma_remove(struct platform_device *pdev) return 0; } +static const struct sf_pdma_driver_platdata mpfs_pdma = { + .quirks = NO_STRICT_ORDERING, +}; + static const struct of_device_id sf_pdma_dt_ids[] = { - { .compatible = "sifive,fu540-c000-pdma" }, - { .compatible = "sifive,pdma0" }, + { + .compatible = "sifive,fu540-c000-pdma", + }, { + .compatible = "sifive,pdma0", + }, { + .compatible = "microchip,mpfs-pdma", + .data = &mpfs_pdma, + }, {}, }; + MODULE_DEVICE_TABLE(of, sf_pdma_dt_ids); static struct platform_driver sf_pdma_driver = { diff --git a/drivers/dma/sf-pdma/sf-pdma.h b/drivers/dma/sf-pdma/sf-pdma.h index 5c398a83b491..3b16db4daa0b 100644 --- a/drivers/dma/sf-pdma/sf-pdma.h +++ b/drivers/dma/sf-pdma/sf-pdma.h @@ -49,6 +49,7 @@ /* Transfer Type */ #define PDMA_FULL_SPEED 0xFF000008 +#define NO_STRICT_ORDERING BIT(3) /* 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[]; }; +struct sf_pdma_driver_platdata { + u32 quirks; +}; + #endif /* _SF_PDMA_H */