From mboxrd@z Thu Jan 1 00:00:00 1970 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 094DAFF8870 for ; Tue, 28 Apr 2026 13:14:41 +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=dGEfAu/AgnDJJCedzH8RmwnDKVo49Il0XwSulC8Nnz8=; b=P1r1D5X8wWC0aG l5zfBXRM8SK5+fvPD/YPF8b5wB+vdNbZfNWraes7ve0GE54kn3cZTjO/o6s0wLLImfmbRNCCuODUM B8kbKGAqRcL86mnceKzcwmRHUBXyP3Hz1arI8vrjnKH9bmvL4ofPCpZdyoCdz0PCzy9MLeLEDb97y wlIGuVKJOJPhAyAMHDt9/CAEafhUBhTG9l3Z2sgkZHv4DmhJ+9JYPTxxvWh4MOarvdXWOmg9FNkct H3UzklhilfM4PZ1YdtVSXt1vpRgT3Yx4Cv0H2B/FojdQgXUWRGNjHH6eivbLbbsDzDk+2NBZOCTTD vcqLLvCDQJ/z2uq7xXvw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1wHiGm-00000001V2V-1heO; Tue, 28 Apr 2026 13:14:32 +0000 Received: from out30-112.freemail.mail.aliyun.com ([115.124.30.112]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1wHiGg-00000001UyW-47QD; Tue, 28 Apr 2026 13:14:29 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.alibaba.com; s=default; t=1777382061; h=From:To:Subject:Date:Message-Id:MIME-Version; bh=4AWwGUYTanTn719lzq6A/EUfbomVklkhE0MF8yj4zBQ=; b=OLXZauagqLp+eLLQByXDv79wqMbcFiqDNbifeNkBKRv6CsNiy3erR6E+p8UONydQEyMmUCcrXmY2Yg6qcA0ZNk7an5JH4RRmLccVDckWpbhejMToOjzGJ+kyxpi3nUv6tAvbVmADO+k+y7uWsBwHmbPXzvKl2Er6KsBNgshVZfE= X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R871e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=maildocker-contentspam033037026112;MF=fangyu.yu@linux.alibaba.com;NM=1;PH=DS;RN=23;SR=0;TI=SMTPD_---0X1ubIDe_1777382054; Received: from localhost.localdomain(mailfrom:fangyu.yu@linux.alibaba.com fp:SMTPD_---0X1ubIDe_1777382054 cluster:ay36) by smtp.aliyun-inc.com; Tue, 28 Apr 2026 21:14:15 +0800 From: fangyu.yu@linux.alibaba.com To: joro@8bytes.org, will@kernel.org, robin.murphy@arm.com, pjw@kernel.org, palmer@dabbelt.com, aou@eecs.berkeley.edu, alex@ghiti.fr, tjeznach@rivosinc.com, jgg@ziepe.ca, kevin.tian@intel.com, baolu.lu@linux.intel.com, vasant.hegde@amd.com, anup@brainfault.org, atish.patra@linux.dev, skhawaja@google.com, jgg@nvidia.com Cc: guoren@kernel.org, kvm@vger.kernel.org, iommu@lists.linux.dev, kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, Fangyu Yu Subject: [RFC PATCH 02/11] iommu/riscv: report iommu capabilities Date: Tue, 28 Apr 2026 21:13:50 +0800 Message-Id: <20260428131359.34872-3-fangyu.yu@linux.alibaba.com> X-Mailer: git-send-email 2.39.3 (Apple Git-146) In-Reply-To: <20260428131359.34872-1-fangyu.yu@linux.alibaba.com> References: <20260428131359.34872-1-fangyu.yu@linux.alibaba.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260428_061427_682171_A51DCF96 X-CRM114-Status: UNSURE ( 6.48 ) X-CRM114-Notice: Please train this message. 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: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org From: Tomasz Jeznach Report RISC-V IOMMU capabilities required by VFIO subsystem to enable PCIe device assignment. Signed-off-by: Tomasz Jeznach Signed-off-by: Fangyu Yu --- drivers/iommu/riscv/iommu.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/iommu/riscv/iommu.c b/drivers/iommu/riscv/iommu.c index a31f50bbad35..15e2a333f969 100644 --- a/drivers/iommu/riscv/iommu.c +++ b/drivers/iommu/riscv/iommu.c @@ -1336,6 +1336,17 @@ static struct iommu_group *riscv_iommu_device_group(struct device *dev) return generic_device_group(dev); } +static bool riscv_iommu_capable(struct device *dev, enum iommu_cap cap) +{ + switch (cap) { + case IOMMU_CAP_CACHE_COHERENCY: + case IOMMU_CAP_DEFERRED_FLUSH: + return true; + default: + return false; + } +} + static int riscv_iommu_of_xlate(struct device *dev, const struct of_phandle_args *args) { return iommu_fwspec_add_ids(dev, args->args, 1); @@ -1397,6 +1408,7 @@ static void riscv_iommu_release_device(struct device *dev) static const struct iommu_ops riscv_iommu_ops = { .of_xlate = riscv_iommu_of_xlate, + .capable = riscv_iommu_capable, .identity_domain = &riscv_iommu_identity_domain, .blocked_domain = &riscv_iommu_blocking_domain, .release_domain = &riscv_iommu_blocking_domain, -- 2.50.1 _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv