From patchwork Mon Sep 14 14:44:22 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 11774021 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 01D0059D for ; Mon, 14 Sep 2020 15:00:26 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (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 C00FD20732 for ; Mon, 14 Sep 2020 15:00:25 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="BwsS84l2"; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="HIz6wke9" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C00FD20732 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To:Message-Id:Date: Subject:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=9v2TzS9MUfZ2q8OCHVpVBtGsyARP6qcmMpIaZcLGAh8=; b=BwsS84l2X3Q/z3iij5zN6w5BN jaF21wy88igZMTcEGtg+YiaGN1yRs5KZvEl8ScAuKINMWlm/KdJu/MmmBWj21+1nsL319+UUj/DZp Bi+GQtp7WddPGqg31lN7SQf7JM7Qfa6Ol0tJS6mABN4XsB5CjnH4plZCVZ8E5oXv1K3ZweULlS96k YELb2bCO4cqcF4rZb8iSJzdcchl/dyAatk08miT4VQ5welkiZj1JYeUiZYjPnHgPvv0NRxBfOhkY5 RJfOtPBOTHNIhP1eT9HeH4UTic9pQSEFPVedXFUwn9NkS2XGxi0ssmTFiWCsMNH0g+Mb2zBj0hPCz qtnvMOcdg==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kHpxd-0006lR-HF; Mon, 14 Sep 2020 15:00:05 +0000 Received: from casper.infradead.org ([2001:8b0:10b:1236::1]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kHpxX-0006kC-Rw for linux-arm-kernel@merlin.infradead.org; Mon, 14 Sep 2020 14:59:59 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description; bh=jNO1brRzt5ng659lhtl+4oBfakGzrKMS1ATQw8TQgTw=; b=HIz6wke9iAtfdEQkH5SQhbb1rq opMCl+x82958lVnA4aljn7W8oe8/QbpwparD4iR6fOZ4E09Lz3gw3Bk23dcQwy/A30gZ/ffXlkvah ZZev3bmBXqnvgch/BNMDycqeM1ZgF3l5e8xXDRnlcCz3zJhv+bWNymmhPAlj/EsYUXA0D+hQB1bjG 4nVKJlBloB2GU7OtCGerGV41obO1J/rX7+Eii6eZNuOtmJ8KZ0SlifDHc7kyPnylID6vSSpRqbdnf MHykLbz/arJkucLZ4kMBJiByeb0ep6XpXe6KVUgvXftPdto4HDHQzIbI1R4HjyOhmEGtoBheeQp0D 9TXJ2Muw==; Received: from 089144214092.atnat0023.highway.a1.net ([89.144.214.92] helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1kHpxU-0002Br-IH; Mon, 14 Sep 2020 14:59:56 +0000 From: Christoph Hellwig To: Mauro Carvalho Chehab , Thomas Bogendoerfer , "James E.J. Bottomley" , Joonyoung Shim , Seung-Woo Kim , Ben Skeggs , Marek Szyprowski , Tomasz Figa , Matt Porter , iommu@lists.linux-foundation.org Subject: [PATCH 06/17] lib82596: move DMA allocation into the callers of i82596_probe Date: Mon, 14 Sep 2020 16:44:22 +0200 Message-Id: <20200914144433.1622958-7-hch@lst.de> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200914144433.1622958-1-hch@lst.de> References: <20200914144433.1622958-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: alsa-devel@alsa-project.org, linux-samsung-soc@vger.kernel.org, linux-scsi@vger.kernel.org, linux-parisc@vger.kernel.org, linux-doc@vger.kernel.org, nouveau@lists.freedesktop.org, linux-kernel@vger.kernel.org, linux-mips@vger.kernel.org, linux-mm@kvack.org, Stefan Richter , netdev@vger.kernel.org, linux1394-devel@lists.sourceforge.net, linux-arm-kernel@lists.infradead.org, linux-media@vger.kernel.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org This allows us to get rid of the LIB82596_DMA_ATTR defined and prepare for untangling the coherent vs non-coherent DMA allocation API. Signed-off-by: Christoph Hellwig --- drivers/net/ethernet/i825xx/lasi_82596.c | 24 ++++++++++------ drivers/net/ethernet/i825xx/lib82596.c | 36 ++++++++---------------- drivers/net/ethernet/i825xx/sni_82596.c | 19 +++++++++---- 3 files changed, 40 insertions(+), 39 deletions(-) diff --git a/drivers/net/ethernet/i825xx/lasi_82596.c b/drivers/net/ethernet/i825xx/lasi_82596.c index aec7e98bcc853a..a12218e940a2fa 100644 --- a/drivers/net/ethernet/i825xx/lasi_82596.c +++ b/drivers/net/ethernet/i825xx/lasi_82596.c @@ -96,8 +96,6 @@ #define OPT_SWAP_PORT 0x0001 /* Need to wordswp on the MPU port */ -#define LIB82596_DMA_ATTR DMA_ATTR_NON_CONSISTENT - #define DMA_WBACK(ndev, addr, len) \ do { dma_cache_sync((ndev)->dev.parent, (void *)addr, len, DMA_TO_DEVICE); } while (0) @@ -155,7 +153,7 @@ lan_init_chip(struct parisc_device *dev) { struct net_device *netdevice; struct i596_private *lp; - int retval; + int retval = -ENOMEM; int i; if (!dev->irq) { @@ -186,12 +184,22 @@ lan_init_chip(struct parisc_device *dev) lp = netdev_priv(netdevice); lp->options = dev->id.sversion == 0x72 ? OPT_SWAP_PORT : 0; + lp->dma = dma_alloc_attrs(&dev->dev, sizeof(struct i596_dma), + &lp->dma_addr, GFP_KERNEL, + DMA_ATTR_NON_CONSISTENT); + if (!lp->dma) + goto out_free_netdev; retval = i82596_probe(netdevice); - if (retval) { - free_netdev(netdevice); - return -ENODEV; - } + if (retval) + goto out_free_dma; + return 0; + +out_free_dma: + dma_free_attrs(&dev->dev, sizeof(struct i596_dma), lp->dma, + lp->dma_addr, DMA_ATTR_NON_CONSISTENT); +out_free_netdev: + free_netdev(netdevice); return retval; } @@ -202,7 +210,7 @@ static int __exit lan_remove_chip(struct parisc_device *pdev) unregister_netdev (dev); dma_free_attrs(&pdev->dev, sizeof(struct i596_private), lp->dma, - lp->dma_addr, LIB82596_DMA_ATTR); + lp->dma_addr, DMA_ATTR_NON_CONSISTENT); free_netdev (dev); return 0; } diff --git a/drivers/net/ethernet/i825xx/lib82596.c b/drivers/net/ethernet/i825xx/lib82596.c index b03757e169e475..b4e4b3eb5758b5 100644 --- a/drivers/net/ethernet/i825xx/lib82596.c +++ b/drivers/net/ethernet/i825xx/lib82596.c @@ -1047,9 +1047,8 @@ static const struct net_device_ops i596_netdev_ops = { static int i82596_probe(struct net_device *dev) { - int i; struct i596_private *lp = netdev_priv(dev); - struct i596_dma *dma; + int ret; /* This lot is ensure things have been cache line aligned. */ BUILD_BUG_ON(sizeof(struct i596_rfd) != 32); @@ -1063,41 +1062,28 @@ static int i82596_probe(struct net_device *dev) if (!dev->base_addr || !dev->irq) return -ENODEV; - dma = dma_alloc_attrs(dev->dev.parent, sizeof(struct i596_dma), - &lp->dma_addr, GFP_KERNEL, - LIB82596_DMA_ATTR); - if (!dma) { - printk(KERN_ERR "%s: Couldn't get shared memory\n", __FILE__); - return -ENOMEM; - } - dev->netdev_ops = &i596_netdev_ops; dev->watchdog_timeo = TX_TIMEOUT; - memset(dma, 0, sizeof(struct i596_dma)); - lp->dma = dma; - - dma->scb.command = 0; - dma->scb.cmd = I596_NULL; - dma->scb.rfd = I596_NULL; + memset(lp->dma, 0, sizeof(struct i596_dma)); + lp->dma->scb.command = 0; + lp->dma->scb.cmd = I596_NULL; + lp->dma->scb.rfd = I596_NULL; spin_lock_init(&lp->lock); - DMA_WBACK_INV(dev, dma, sizeof(struct i596_dma)); + DMA_WBACK_INV(dev, lp->dma, sizeof(struct i596_dma)); - i = register_netdev(dev); - if (i) { - dma_free_attrs(dev->dev.parent, sizeof(struct i596_dma), - dma, lp->dma_addr, LIB82596_DMA_ATTR); - return i; - } + ret = register_netdev(dev); + if (ret) + return ret; DEB(DEB_PROBE, printk(KERN_INFO "%s: 82596 at %#3lx, %pM IRQ %d.\n", dev->name, dev->base_addr, dev->dev_addr, dev->irq)); DEB(DEB_INIT, printk(KERN_INFO "%s: dma at 0x%p (%d bytes), lp->scb at 0x%p\n", - dev->name, dma, (int)sizeof(struct i596_dma), - &dma->scb)); + dev->name, lp->dma, (int)sizeof(struct i596_dma), + &lp->dma->scb)); return 0; } diff --git a/drivers/net/ethernet/i825xx/sni_82596.c b/drivers/net/ethernet/i825xx/sni_82596.c index 22f5887578b2bd..4b9ac0c6557731 100644 --- a/drivers/net/ethernet/i825xx/sni_82596.c +++ b/drivers/net/ethernet/i825xx/sni_82596.c @@ -24,8 +24,6 @@ static const char sni_82596_string[] = "snirm_82596"; -#define LIB82596_DMA_ATTR 0 - #define DMA_WBACK(priv, addr, len) do { } while (0) #define DMA_INV(priv, addr, len) do { } while (0) #define DMA_WBACK_INV(priv, addr, len) do { } while (0) @@ -134,10 +132,19 @@ static int sni_82596_probe(struct platform_device *dev) lp->ca = ca_addr; lp->mpu_port = mpu_addr; + lp->dma = dma_alloc_coherent(&dev->dev, sizeof(struct i596_dma), + &lp->dma_addr, GFP_KERNEL); + if (!lp->dma) + goto probe_failed; + retval = i82596_probe(netdevice); - if (retval == 0) - return 0; + if (retval) + goto probe_failed_free_dma; + return 0; +probe_failed_free_dma: + dma_free_coherent(&dev->dev, sizeof(struct i596_dma), lp->dma, + lp->dma_addr); probe_failed: free_netdev(netdevice); probe_failed_free_ca: @@ -153,8 +160,8 @@ static int sni_82596_driver_remove(struct platform_device *pdev) struct i596_private *lp = netdev_priv(dev); unregister_netdev(dev); - dma_free_attrs(dev->dev.parent, sizeof(struct i596_private), lp->dma, - lp->dma_addr, LIB82596_DMA_ATTR); + dma_free_coherent(&pdev->dev, sizeof(struct i596_private), lp->dma, + lp->dma_addr); iounmap(lp->ca); iounmap(lp->mpu_port); free_netdev (dev);