From patchwork Fri Jun 11 15:26:46 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Claire Chang X-Patchwork-Id: 12315967 X-Patchwork-Delegate: bhelgaas@google.com 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=-18.9 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, 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 521C7C48BE0 for ; Fri, 11 Jun 2021 15:28:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3ADF261404 for ; Fri, 11 Jun 2021 15:28:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231869AbhFKPag (ORCPT ); Fri, 11 Jun 2021 11:30:36 -0400 Received: from mail-pg1-f172.google.com ([209.85.215.172]:46836 "EHLO mail-pg1-f172.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231858AbhFKPac (ORCPT ); Fri, 11 Jun 2021 11:30:32 -0400 Received: by mail-pg1-f172.google.com with SMTP id n12so2727241pgs.13 for ; Fri, 11 Jun 2021 08:28:21 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=nk5KLnjJUZzmwtQpVnUAlLQfo+45PCj3pfGwn0Xh8Lc=; b=ZWUxrjtFrWfMiz2vkDC3jaU4HtvtATQivM2/a1WCbJcnmtmvKI0dai77VR4iYEO7wi qbyNf8h4nuDiw8nL5J1NWb9gMMiyGOXWgSIcxhIHjtKOTxqX7IkzBlm/uHswtyFUBs9r 1dmPjPkxMqFDM4eWBrACbXxSEo8vyq9XlFtA4= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=nk5KLnjJUZzmwtQpVnUAlLQfo+45PCj3pfGwn0Xh8Lc=; b=aWyC1m3IOw0Q3Trx2+hOfpg/toQXkyDhcJ98pY+1wdNKDarymcPBr9JLXbGQYdmoXf mTAdpcZ8XRYS6J3eUFYsJjOG0D4FcLSfGXq2d2v9WAAi8d0clTDDo1oX73iGBsNDeLXF vOPMb+asiSifkROtxGHvZ8LUoxHj+uaE3yLQG2mCkFONWuILYSI/RC5E2Sr4XY8VRfVj VmfspjrkOSzA7C4vz7YsFfBgLo6HNtsoImksxO5FMGPBYjnNObYRJdhf2GU7WDPOxt+2 hR5yNEE+L/oR1aKOWZNg/LXbTprubbqkPWWF5eNv6IDwiztregc1pzn57EKxQ7n3XzJR Tb3w== X-Gm-Message-State: AOAM532ZhgoentofZGq/h73+dldo8cwxLvoHDisUGj8wU+cqCFZN+gVm lmu0mVnHg/tSvUUfuh9dHhawZA== X-Google-Smtp-Source: ABdhPJzVViGqCnvRmV8jjGxainZfFkO96cSEyNRWz3J/3hQzjle8DzEEYAlc9QxFMOZm5LzjKL8vSg== X-Received: by 2002:a63:1210:: with SMTP id h16mr4191204pgl.189.1623425241610; Fri, 11 Jun 2021 08:27:21 -0700 (PDT) Received: from localhost ([2401:fa00:95:205:33c8:8e01:1161:6797]) by smtp.gmail.com with UTF8SMTPSA id a11sm5354193pjq.45.2021.06.11.08.27.14 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 11 Jun 2021 08:27:20 -0700 (PDT) From: Claire Chang To: Rob Herring , mpe@ellerman.id.au, Joerg Roedel , Will Deacon , Frank Rowand , Konrad Rzeszutek Wilk , boris.ostrovsky@oracle.com, jgross@suse.com, Christoph Hellwig , Marek Szyprowski Cc: benh@kernel.crashing.org, paulus@samba.org, "list@263.net:IOMMU DRIVERS" , sstabellini@kernel.org, Robin Murphy , grant.likely@arm.com, xypron.glpk@gmx.de, Thierry Reding , mingo@kernel.org, bauerman@linux.ibm.com, peterz@infradead.org, Greg KH , Saravana Kannan , "Rafael J . Wysocki" , heikki.krogerus@linux.intel.com, Andy Shevchenko , Randy Dunlap , Dan Williams , Bartosz Golaszewski , linux-devicetree , lkml , linuxppc-dev@lists.ozlabs.org, xen-devel@lists.xenproject.org, Nicolas Boichat , Jim Quinlan , tfiga@chromium.org, bskeggs@redhat.com, bhelgaas@google.com, chris@chris-wilson.co.uk, tientzu@chromium.org, daniel@ffwll.ch, airlied@linux.ie, dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org, jani.nikula@linux.intel.com, jxgao@google.com, joonas.lahtinen@linux.intel.com, linux-pci@vger.kernel.org, maarten.lankhorst@linux.intel.com, matthew.auld@intel.com, rodrigo.vivi@intel.com, thomas.hellstrom@linux.intel.com Subject: [PATCH v9 01/14] swiotlb: Refactor swiotlb init functions Date: Fri, 11 Jun 2021 23:26:46 +0800 Message-Id: <20210611152659.2142983-2-tientzu@chromium.org> X-Mailer: git-send-email 2.32.0.272.g935e593368-goog In-Reply-To: <20210611152659.2142983-1-tientzu@chromium.org> References: <20210611152659.2142983-1-tientzu@chromium.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Add a new function, swiotlb_init_io_tlb_mem, for the io_tlb_mem struct initialization to make the code reusable. Signed-off-by: Claire Chang Reviewed-by: Christoph Hellwig --- kernel/dma/swiotlb.c | 53 ++++++++++++++++++++++---------------------- 1 file changed, 27 insertions(+), 26 deletions(-) diff --git a/kernel/dma/swiotlb.c b/kernel/dma/swiotlb.c index 8ca7d505d61c..1a1208c81e85 100644 --- a/kernel/dma/swiotlb.c +++ b/kernel/dma/swiotlb.c @@ -168,9 +168,32 @@ void __init swiotlb_update_mem_attributes(void) memset(vaddr, 0, bytes); } -int __init swiotlb_init_with_tbl(char *tlb, unsigned long nslabs, int verbose) +static void swiotlb_init_io_tlb_mem(struct io_tlb_mem *mem, phys_addr_t start, + unsigned long nslabs, bool late_alloc, + bool memory_decrypted) { + void *vaddr = phys_to_virt(start); unsigned long bytes = nslabs << IO_TLB_SHIFT, i; + + mem->nslabs = nslabs; + mem->start = start; + mem->end = mem->start + bytes; + mem->index = 0; + mem->late_alloc = late_alloc; + spin_lock_init(&mem->lock); + for (i = 0; i < mem->nslabs; i++) { + mem->slots[i].list = IO_TLB_SEGSIZE - io_tlb_offset(i); + mem->slots[i].orig_addr = INVALID_PHYS_ADDR; + mem->slots[i].alloc_size = 0; + } + + if (memory_decrypted) + set_memory_decrypted((unsigned long)vaddr, bytes >> PAGE_SHIFT); + memset(vaddr, 0, bytes); +} + +int __init swiotlb_init_with_tbl(char *tlb, unsigned long nslabs, int verbose) +{ struct io_tlb_mem *mem; size_t alloc_size; @@ -186,16 +209,8 @@ int __init swiotlb_init_with_tbl(char *tlb, unsigned long nslabs, int verbose) if (!mem) panic("%s: Failed to allocate %zu bytes align=0x%lx\n", __func__, alloc_size, PAGE_SIZE); - mem->nslabs = nslabs; - mem->start = __pa(tlb); - mem->end = mem->start + bytes; - mem->index = 0; - spin_lock_init(&mem->lock); - for (i = 0; i < mem->nslabs; i++) { - mem->slots[i].list = IO_TLB_SEGSIZE - io_tlb_offset(i); - mem->slots[i].orig_addr = INVALID_PHYS_ADDR; - mem->slots[i].alloc_size = 0; - } + + swiotlb_init_io_tlb_mem(mem, __pa(tlb), nslabs, false, false); io_tlb_default_mem = mem; if (verbose) @@ -282,7 +297,6 @@ swiotlb_late_init_with_default_size(size_t default_size) int swiotlb_late_init_with_tbl(char *tlb, unsigned long nslabs) { - unsigned long bytes = nslabs << IO_TLB_SHIFT, i; struct io_tlb_mem *mem; if (swiotlb_force == SWIOTLB_NO_FORCE) @@ -297,20 +311,7 @@ swiotlb_late_init_with_tbl(char *tlb, unsigned long nslabs) if (!mem) return -ENOMEM; - mem->nslabs = nslabs; - mem->start = virt_to_phys(tlb); - mem->end = mem->start + bytes; - mem->index = 0; - mem->late_alloc = 1; - spin_lock_init(&mem->lock); - for (i = 0; i < mem->nslabs; i++) { - mem->slots[i].list = IO_TLB_SEGSIZE - io_tlb_offset(i); - mem->slots[i].orig_addr = INVALID_PHYS_ADDR; - mem->slots[i].alloc_size = 0; - } - - set_memory_decrypted((unsigned long)tlb, bytes >> PAGE_SHIFT); - memset(tlb, 0, bytes); + swiotlb_init_io_tlb_mem(mem, virt_to_phys(tlb), nslabs, true, true); io_tlb_default_mem = mem; swiotlb_print_info();