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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0ACE2C433FE for ; Sun, 31 Oct 2021 18:12:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DD3CD61076 for ; Sun, 31 Oct 2021 18:12:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230223AbhJaSPN (ORCPT ); Sun, 31 Oct 2021 14:15:13 -0400 Received: from mail.kernel.org ([198.145.29.99]:60438 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230041AbhJaSPM (ORCPT ); Sun, 31 Oct 2021 14:15:12 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 9EEC760FD9; Sun, 31 Oct 2021 18:12:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1635703959; bh=xeJkfWErmROj9EmP/rG5eXcTOcFyWTWYURdeAcOO5mk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=SYBsrKO3gNRsETbrpzlZjC7xlWFVLctNImvmi46DqkIEAdBXiYb37V80cxaKTm3py oRHVK28+pygQIzwAp23ygthMi6ePqGiDXYy8k0o7OjuSCy6DJINbWU/uQh6MElqqex iyVqvIpMDAgMJ0gS/2eNP0XWaQGFWTGNbj97fXc0hatA9DP/AcV2UVjTcPHmLFQldS +1hG5lvSq868goKRr/oZKw01UxaEP4gD1HZCl75mo0lDF77P7d/dvZFlVee7zE7wk/ XyWLP3KYP7fmCxbVlZznRwDsiZDQKEyDLMx0leyERhO2uBZ2jutk7jmDEX7dca9aK0 UL70CpSml5Dig== From: =?UTF-8?q?Marek=20Beh=C3=BAn?= To: Lorenzo Pieralisi Cc: linux-pci@vger.kernel.org, pali@kernel.org, =?UTF-8?q?Marek=20Beh=C3=BAn?= Subject: [PATCH 2/7] PCI: pci-bridge-emul: Add definitions for missing capabilities registers Date: Sun, 31 Oct 2021 19:12:28 +0100 Message-Id: <20211031181233.9976-3-kabel@kernel.org> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20211031181233.9976-1-kabel@kernel.org> References: <20211031181233.9976-1-kabel@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org From: Pali Rohár pci-bridge-emul driver already allocates buffer for capabilities up to the PCI_EXP_SLTSTA2 register, but does not define bit access behavior for these registers. Add these missing definitions. Signed-off-by: Pali Rohár Signed-off-by: Marek Behún Cc: stable@vger.kernel.org --- drivers/pci/pci-bridge-emul.c | 39 +++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) diff --git a/drivers/pci/pci-bridge-emul.c b/drivers/pci/pci-bridge-emul.c index a4af1a533d71..aa3320e3c469 100644 --- a/drivers/pci/pci-bridge-emul.c +++ b/drivers/pci/pci-bridge-emul.c @@ -251,6 +251,45 @@ struct pci_bridge_reg_behavior pcie_cap_regs_behavior[PCI_CAP_PCIE_SIZEOF / 4] = .ro = GENMASK(15, 0) | PCI_EXP_RTSTA_PENDING, .w1c = PCI_EXP_RTSTA_PME, }, + + [PCI_EXP_DEVCAP2 / 4] = { + /* Device capabilities 2 register has reserved bits [30:27]. */ + .ro = BIT(31) | GENMASK(26, 0), + }, + + [PCI_EXP_DEVCTL2 / 4] = { + /* + * Device control 2 register is RW. + * + * Device status 2 register is reserved. + */ + .rw = GENMASK(15, 0), + }, + + [PCI_EXP_LNKCAP2 / 4] = { + /* Link capabilities 2 register has reserved bits [30:25] and 0. */ + .ro = BIT(31) | GENMASK(24, 1), + }, + + [PCI_EXP_LNKCTL2 / 4] = { + /* + * Link control 2 register is RW. + * + * Link status 2 register has bits 5, 15 W1C; + * bits 10, 11 reserved and others are RO. + */ + .rw = GENMASK(15, 0), + .w1c = (BIT(15) | BIT(5)) << 16, + .ro = (GENMASK(14, 12) | GENMASK(9, 6) | GENMASK(4, 0)) << 16, + }, + + [PCI_EXP_SLTCAP2 / 4] = { + /* Slot capabilities 2 register is reserved. */ + }, + + [PCI_EXP_SLTCTL2 / 4] = { + /* Both Slot control 2 and Slot status 2 registers are reserved. */ + }, }; /* -- 2.32.0