From patchwork Sat Mar 15 20:15:36 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bjorn Helgaas X-Patchwork-Id: 14018205 X-Patchwork-Delegate: kw@linux.com Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0ABF319D89B; Sat, 15 Mar 2025 20:15:57 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742069758; cv=none; b=o4HcSCYMXOnpXRIwaBaV2bI74whjlU0i+bKNqKZFZ6tCjRDWPqiyMn/AbxemGIiat5WWxK+0wTdvIAa7mU/2hBSZBxk8h4mAFaZZrXGIpKOE5+egtYzqBWXQlKnjbuCFuAWju5EqG+QzJ8o65QA3xbSW3ItZuUM8K7dRasDdUyA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742069758; c=relaxed/simple; bh=ce45hTdaEpFy2QpraH0ZrMeEMIsCGcxs2/r8PQnCB4I=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=HZOcnZ4IAjbN/pUvo8iM61YYpUcLomqdqUq3s4HljFgcBvoCvAhzuchHiFfG7GS65OfqEPaR6PRf1C25IqYbwz6PFMdb7Hde3q4rwJKjpgr2penyReUP04p44nio8x9qPeVrjOZMDTeVHAmsYza5NCHckCKqAWkmYOoglpf0XAg= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=L9hWYw9W; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="L9hWYw9W" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 56371C4CEE9; Sat, 15 Mar 2025 20:15:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1742069757; bh=ce45hTdaEpFy2QpraH0ZrMeEMIsCGcxs2/r8PQnCB4I=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=L9hWYw9WrbGTWUJaOVmESjkIwtQr902psTdxYdA+Kty7jkGwfjdLBPBxkh8PguMGd 4cOCqpZ7BwFVe+Kd/oPf0HFffeRnxRUCsYDDBBUpmJhwW+GATHh9r5TJU69qG8aPLR /ptE87LGlu+ASzit/SZmFK5szS5CqH4c/q9y2gvoTRdiXY3w/FO4E1jsvQmSv7gxmX SJuLJ9Mu+bwnm2Eb2KO23zSaPK/Afhd5ejL4KIP5Ou7AQDOy7nuYoJLgjKA2XUN3En IdYeTeCTA1u9SJW6FeCYI+Kd/ii5ZR5ZrUEXtgcSlNKh57oc2ASFbKQMwaeiZ2Canu SIJfTIKCyzB7g== From: Bjorn Helgaas To: Frank Li Cc: Rob Herring , Saravana Kannan , Jingoo Han , Manivannan Sadhasivam , Lorenzo Pieralisi , =?utf-8?q?Krzysztof_Wilczy=C5=84?= =?utf-8?q?ski?= , Richard Zhu , Lucas Stach , Shawn Guo , Sascha Hauer , Fabio Estevam , Niklas Cassel , Pengutronix Kernel Team , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, imx@lists.linux.dev, Bjorn Helgaas Subject: [PATCH v12 01/13] PCI: dwc: Use resource start as iomap() input in dw_pcie_pme_turn_off() Date: Sat, 15 Mar 2025 15:15:36 -0500 Message-Id: <20250315201548.858189-2-helgaas@kernel.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250315201548.858189-1-helgaas@kernel.org> References: <20250315201548.858189-1-helgaas@kernel.org> Precedence: bulk X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Frank Li The msg_res region translates writes into PCIe Message TLPs. Previously we mapped this region using atu.cpu_addr, the input address programmed into the ATU. "cpu_addr" is a misnomer because when a bus fabric translates addresses between the CPU and the ATU, the ATU input address is different from the CPU address. A future patch will rename "cpu_addr" and correct the value to be the ATU input address instead of the CPU physical address. Map the msg_res region before writing to it using the msg_res resource start, a CPU physical address. Link: https://lore.kernel.org/r/20250313-pci_fixup_addr-v11-1-01d2313502ab@nxp.com Signed-off-by: Frank Li Signed-off-by: Bjorn Helgaas --- drivers/pci/controller/dwc/pcie-designware-host.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/pci/controller/dwc/pcie-designware-host.c b/drivers/pci/controller/dwc/pcie-designware-host.c index ffaded8f2df7..ae3fd2a5dbf8 100644 --- a/drivers/pci/controller/dwc/pcie-designware-host.c +++ b/drivers/pci/controller/dwc/pcie-designware-host.c @@ -908,7 +908,7 @@ static int dw_pcie_pme_turn_off(struct dw_pcie *pci) if (ret) return ret; - mem = ioremap(atu.cpu_addr, pci->region_align); + mem = ioremap(pci->pp.msg_res->start, pci->region_align); if (!mem) return -ENOMEM;