From patchwork Thu Jun 15 20:10:46 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jonas Karlman X-Patchwork-Id: 13281711 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 AD0D4EB64D9 for ; Thu, 15 Jun 2023 20:11:43 +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:Cc:To:MIME-Version:References: In-Reply-To:Message-Id:Date:Subject:From:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=1z3ENaZMAgPWrWUxTfPqZ3wMFlbQZBoZUhz/QLrzjUw=; b=Oho8vxXHxO+B+XRM0OyoRHuTuD pZqkPIIAiLdnoz2tjm4GStnXGRm537XnydqhgO3m1MXREg3hBakPMAvjuJPTX5Nf5wpNBvv1GtKI7 WkWBwXLj5hXaIxCjqwp2UoabaUOpW/3LIXW0YSRqIjucH+7XbQLjxhUvORbHaecVt5r1zHIbzJsFP 6iw4rgKToAnxxpyEe0xiRyannBGy5H2y59KgMEAMWNEau3bpWXNdXex+MTBnfmlz3D/HT9auf8N78 X9yHZwtOZB5+hzVmbnmF3+rtr4vyl4w4L44GWwmOd07oI9EIazOre6D2NJmYWHprChg19zgwydVHb c0PQmqQg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1q9tJJ-00Fzc4-0T; Thu, 15 Jun 2023 20:11:13 +0000 Received: from s.wrqvtzvf.outbound-mail.sendgrid.net ([149.72.126.143]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1q9tIx-00FzP9-21 for linux-arm-kernel@lists.infradead.org; Thu, 15 Jun 2023 20:10:55 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kwiboo.se; h=from:subject:in-reply-to:references:mime-version:to:cc: content-transfer-encoding:content-type:cc:content-type:from:subject:to; s=s1; bh=InoMtFPn0qTi9rWJ9dL8ZNuMI6SUv/MQcYAVE6/OKuo=; b=HiCP8luTDml4dCPktTvI4G2UlOh2JqkOCf/aGXztdfKU9pDKYRW1eYvbwGA77RClrwUq ALcRzlSdAjaPwSy12HtHnldT3u/ghdJxx8AVijFBmON6CitofS5IIg7T6xmDyCL9r8mkYu Pn31l4ZYbpCyYAuAjOtSgiIJN/+HHf9XwCoLUOJJrkMwkO3KKAIKmdl2Qq0X7c8PnkPNEX EeSiTxErTQHQW384TL3a/ErkaCV3oCRTFsTRw9DEepQHGT6MwvTCaRveHm1JBEjtURvBfm hKsrYjTBfjHGnjzSrfnZVxqNmPSVEmMiTMVwrX81/HPVVZMCn0HNbhG71JEU7dTw== Received: by filterdrecv-84b96456cb-bvsrh with SMTP id filterdrecv-84b96456cb-bvsrh-1-648B7046-1F 2023-06-15 20:10:46.550315811 +0000 UTC m=+3097935.073942733 Received: from bionic.localdomain (unknown) by geopod-ismtpd-5 (SG) with ESMTP id iwNkUP0QQjuksV59p23YJg Thu, 15 Jun 2023 20:10:46.259 +0000 (UTC) From: Jonas Karlman Subject: [PATCH v2 1/3] iommu: rockchip: Fix discovery table address encoding Date: Thu, 15 Jun 2023 20:10:46 +0000 (UTC) Message-Id: <20230615201042.2291867-2-jonas@kwiboo.se> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230615201042.2291867-1-jonas@kwiboo.se> References: <20230615201042.2291867-1-jonas@kwiboo.se> MIME-Version: 1.0 X-SG-EID: TdbjyGynYnRZWhH+7lKUQJL+ZxmxpowvO2O9SQF5CwCVrYgcwUXgU5DKUU3QxAfZekEeQsTe+RrMu3cja6a0h2WrMIoUX2Eyj8rSFyVoSoz7tVbeJqQR7WFNCHUyheNyk/bPq147L39vx2smspVWTq7LOi9K7FyO33CWUW1L7UjvkPFH4PzSLYGRNfdXRAuVRhLxKlBgI2kNfpgTGzDw0o5ZhF+r4EKIza4nk4nX51vE+0yS7SJwD7pVm/GZVMIRxkBWI5lkp4ZjZrEfZADcqA== To: Joerg Roedel , Will Deacon , Robin Murphy , Heiko Stuebner , Benjamin Gaignard Cc: iommu@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org, Jonas Karlman , Joerg Roedel X-Entity-ID: P7KYpSJvGCELWjBME/J5tg== X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230615_131051_793330_51019EA4 X-CRM114-Status: GOOD ( 14.91 ) X-BeenThere: linux-arm-kernel@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-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org The address to the discovery table is currently encoded using the following bit layout. 31:12 - Address bit 31:0 11: 4 - Address bit 39:32 This is also the bit layout used by the vendor kernel. However, testing has shown that addresses to the discovery/page tables and memory pages are all encoded using the same bit layout. IOMMU v1: 31:12 - Address bit 31:0 IOMMU v2: 31:12 - Address bit 31:0 11: 8 - Address bit 35:32 7: 4 - Address bit 39:36 Change to use the mk_dtentries ops to encode the discovery table address correctly. Also update the bit layout comment for the page address. These changes render the dte_addr_phys and dma_addr_dte ops unused and will be removed in a following patch. Fixes: 227014b33f62 ("iommu: rockchip: Add internal ops to handle variants") Signed-off-by: Jonas Karlman --- v2: - replace currently with correctly in commit message drivers/iommu/rockchip-iommu.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/iommu/rockchip-iommu.c b/drivers/iommu/rockchip-iommu.c index 4054030c3237..d46319f77e5c 100644 --- a/drivers/iommu/rockchip-iommu.c +++ b/drivers/iommu/rockchip-iommu.c @@ -278,8 +278,8 @@ static u32 rk_mk_pte(phys_addr_t page, int prot) /* * In v2: * 31:12 - Page address bit 31:0 - * 11:9 - Page address bit 34:32 - * 8:4 - Page address bit 39:35 + * 11: 8 - Page address bit 35:32 + * 7: 4 - Page address bit 39:36 * 3 - Security * 2 - Writable * 1 - Readable @@ -577,7 +577,7 @@ static void log_iova(struct rk_iommu *iommu, int index, dma_addr_t iova) page_offset = rk_iova_page_offset(iova); mmu_dte_addr = rk_iommu_read(base, RK_MMU_DTE_ADDR); - mmu_dte_addr_phys = rk_ops->dte_addr_phys(mmu_dte_addr); + mmu_dte_addr_phys = rk_ops->pt_address(mmu_dte_addr); dte_addr_phys = mmu_dte_addr_phys + (4 * dte_index); dte_addr = phys_to_virt(dte_addr_phys); @@ -967,7 +967,7 @@ static int rk_iommu_enable(struct rk_iommu *iommu) for (i = 0; i < iommu->num_mmu; i++) { rk_iommu_write(iommu->bases[i], RK_MMU_DTE_ADDR, - rk_ops->dma_addr_dte(rk_domain->dt_dma)); + rk_ops->mk_dtentries(rk_domain->dt_dma)); rk_iommu_base_command(iommu->bases[i], RK_MMU_CMD_ZAP_CACHE); rk_iommu_write(iommu->bases[i], RK_MMU_INT_MASK, RK_MMU_IRQ_MASK); }