From patchwork Tue Sep 15 15:51:10 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 257618 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E986BC31E40 for ; Tue, 15 Sep 2020 22:39:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9FEF220872 for ; Tue, 15 Sep 2020 22:39:01 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="TNPCL5eo" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727691AbgIOWfO (ORCPT ); Tue, 15 Sep 2020 18:35:14 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49530 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727523AbgIOQKm (ORCPT ); Tue, 15 Sep 2020 12:10:42 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EE08BC0611C1; Tue, 15 Sep 2020 09:07:08 -0700 (PDT) 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=TNPCL5eofP+HlOArQnkCfBaBcr YSGLdW/Qiv8AzkIHe8+EOuTfZrgbsKu9jL1zP7QoNQXeZv0pCDWNLoYO6X7GX52MyzpQm/Qd0l4TW s31qJRN7rvs24hSZP6bcKILlEwfoqjkT6or2AmTorYl7yaujPyXyRdb9xYCgwn0zC5nSKokjgc87s wAsYB3/f0N9P1i3981XSC7+myVSEdufwVNd9kMFcESiR1kuA3nHY385p7qPLuLXrEFtb5WxZTOQ3I 4Q6UFijBo+aeSfJD4+xDoOSZN+FjexdxQU+nwsfcM9/hEd0538/gLTNdu3xeyaqFFbXJnbQhSDROE mrXYuVRA==; 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 1kIDTc-0004Iz-Az; Tue, 15 Sep 2020 16:06:40 +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 Cc: Stefan Richter , linux1394-devel@lists.sourceforge.net, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mips@vger.kernel.org, linux-parisc@vger.kernel.org, linux-samsung-soc@vger.kernel.org, nouveau@lists.freedesktop.org, netdev@vger.kernel.org, linux-scsi@vger.kernel.org, linux-mm@kvack.org, alsa-devel@alsa-project.org Subject: [PATCH 06/18] lib82596: move DMA allocation into the callers of i82596_probe Date: Tue, 15 Sep 2020 17:51:10 +0200 Message-Id: <20200915155122.1768241-7-hch@lst.de> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200915155122.1768241-1-hch@lst.de> References: <20200915155122.1768241-1-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 Sender: linux-scsi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.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);