From patchwork Fri Mar 29 09:09:37 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Damien Le Moal X-Patchwork-Id: 13610523 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 3141CCD128E for ; Fri, 29 Mar 2024 10:19:18 +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=4b5/VFdCth6b83k6h5PPaG80eaAUphz8NLJM1m6rDoI=; b=Jw7tYKZj9+BZZr is6Wwki1I+9qQfJDfI9R2TNWuKd577ZWrRdUQuysbMvtcECDXTmtZBK6a+Fe2PCwvm0QvlVc4Xu4P QOrJSJvAEfwDE8eakHyBYcBOPN/VVMpKNA1iDKMBQd0l0yYb96cqMHozZptJZYGmwaVZWOBoKyK0P QTiOBGNkv1EyHi/bH/Ce2Rm05SLQg99ohdow8Pis7Zb27lUgvpURwWp/8YzdYYUH5ak3X/t+qsD1y OuhbCW1BQcJrd5GlKjuVeBEeSm4J0gpzjVMpe5VvRN85y5cD6X6ZtiXhrIaUEu6VBPTRyGHxd+aQv 7x/mQEtfMOWsjRVfpgxA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rq9KF-000000000yc-0KAc; Fri, 29 Mar 2024 10:19:07 +0000 Received: from dfw.source.kernel.org ([139.178.84.217]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rq8FR-0000000HQ9p-0SRb for linux-rockchip@lists.infradead.org; Fri, 29 Mar 2024 09:10:09 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id E7ED1618CC; Fri, 29 Mar 2024 09:10:04 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 90708C43390; Fri, 29 Mar 2024 09:10:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1711703404; bh=xJl20dD/sfAgaEM4rbGBuGwJ0fENngDOuq2Kb9XiBoI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=YAh3YGV40g4BCrUXtyYt20wRiTXN1/OQGNo3ZwZVUpR4ybt/IDow9+EDtMWYdGM7G MMeEu+3i+Ipaa+otSjP2rRf42ea2nOeYP7fhSOcn+OBSnRtveN6dqGta2NXmBfDX1s ABoVFQdzc6RZ2NDF9JRrTu2UMBQBWhRoU8nS/XO9uNUryvslBt7TLsBrX6zHIqYG2i UTpvdBMkzmJlNrfQyAoP54xs0/ByeRXF8Il66eaAmFB0QjYwNF4OoZOa7Gk868GKQC ypVmQjC+tJ4OCeMtvVOnQiJ1B78xy4xwbBIhOEoBgxfZrSOkFRa3lgFtJUP2cYmy+/ 21OFctA6yIICQ== From: Damien Le Moal To: Manivannan Sadhasivam , Kishon Vijay Abraham I , Shawn Lin , =?utf-8?q?Krzysztof_Wilczy=C5=84ski?= , Bjorn Helgaas , Heiko Stuebner , linux-pci@vger.kernel.org Cc: linux-rockchip@lists.infradead.org Subject: [PATCH 11/19] PCI: rockchip-ep: Improve rockchip_pcie_ep_map_addr() Date: Fri, 29 Mar 2024 18:09:37 +0900 Message-ID: <20240329090945.1097609-12-dlemoal@kernel.org> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240329090945.1097609-1-dlemoal@kernel.org> References: <20240329090945.1097609-1-dlemoal@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240329_021005_453118_581FF084 X-CRM114-Status: UNSURE ( 8.86 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org Add a check to verify that the outbound region to be used for mapping an address is not already in use. Signed-off-by: Damien Le Moal --- drivers/pci/controller/pcie-rockchip-ep.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/pci/controller/pcie-rockchip-ep.c b/drivers/pci/controller/pcie-rockchip-ep.c index 296916d4a6e4..c2ca7878cee3 100644 --- a/drivers/pci/controller/pcie-rockchip-ep.c +++ b/drivers/pci/controller/pcie-rockchip-ep.c @@ -245,6 +245,9 @@ static int rockchip_pcie_ep_map_addr(struct pci_epc *epc, u8 fn, u8 vfn, struct rockchip_pcie *pcie = &ep->rockchip; u32 r = rockchip_ob_region(addr); + if (test_bit(r, &ep->ob_region_map)) + return -EBUSY; + rockchip_pcie_prog_ep_ob_atu(pcie, fn, r, addr, pci_addr, size); set_bit(r, &ep->ob_region_map);