From patchwork Wed Jan 13 11:25:32 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hannes Reinecke X-Patchwork-Id: 566887 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 207FA14032B for ; Wed, 13 Jan 2016 22:26:40 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756976AbcAML0i (ORCPT ); Wed, 13 Jan 2016 06:26:38 -0500 Received: from mx2.suse.de ([195.135.220.15]:48164 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756975AbcAMLZh (ORCPT ); Wed, 13 Jan 2016 06:25:37 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay1.suse.de (charybdis-ext.suse.de [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id DE851AD0B; Wed, 13 Jan 2016 11:25:35 +0000 (UTC) From: Hannes Reinecke To: Bjorn Helgaas Cc: Alexander Duyck , linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, Babu Moger , Hannes Reinecke , Bjorn Helgaas , Hannes Reinecke Subject: [PATCHv2 1/4] pci: Update VPD definitions Date: Wed, 13 Jan 2016 12:25:32 +0100 Message-Id: <1452684335-46107-2-git-send-email-hare@suse.de> X-Mailer: git-send-email 1.8.5.6 In-Reply-To: <1452684335-46107-1-git-send-email-hare@suse.de> References: <1452684335-46107-1-git-send-email-hare@suse.de> Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org The 'end' tag is actually 0x0f, it's the representation as a small resource data type tag that's 0x78 (ie shifted by 3). This patch also adds helper functions to extract the resource data type tags for both large and small resource data types. Cc: Alexander Duyck Cc: Bjorn Helgaas Signed-off-by: Hannes Reinecke --- include/linux/pci.h | 27 +++++++++++++++++++++++++-- 1 file changed, 25 insertions(+), 2 deletions(-) diff --git a/include/linux/pci.h b/include/linux/pci.h index d86378c..5d61c36 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -1836,12 +1836,13 @@ bool pci_acs_path_enabled(struct pci_dev *start, #define PCI_VPD_LRDT_RW_DATA PCI_VPD_LRDT_ID(PCI_VPD_LTIN_RW_DATA) /* Small Resource Data Type Tag Item Names */ -#define PCI_VPD_STIN_END 0x78 /* End */ +#define PCI_VPD_STIN_END 0x0f /* End */ -#define PCI_VPD_SRDT_END PCI_VPD_STIN_END +#define PCI_VPD_SRDT_END (PCI_VPD_STIN_END << 3) #define PCI_VPD_SRDT_TIN_MASK 0x78 #define PCI_VPD_SRDT_LEN_MASK 0x07 +#define PCI_VPD_LRDT_TIN_MASK 0x7f #define PCI_VPD_LRDT_TAG_SIZE 3 #define PCI_VPD_SRDT_TAG_SIZE 1 @@ -1865,6 +1866,17 @@ static inline u16 pci_vpd_lrdt_size(const u8 *lrdt) } /** + * pci_vpd_lrdt_tag - Extracts the Large Resource Data Type Tag Item + * @lrdt: Pointer to the beginning of the Large Resource Data Type tag + * + * Returns the extracted Large Resource Data Type Tag item. + */ +static inline u16 pci_vpd_lrdt_tag(const u8 *lrdt) +{ + return (u16)(lrdt[0] & PCI_VPD_LRDT_TIN_MASK); +} + +/** * pci_vpd_srdt_size - Extracts the Small Resource Data Type length * @lrdt: Pointer to the beginning of the Small Resource Data Type tag * @@ -1876,6 +1888,17 @@ static inline u8 pci_vpd_srdt_size(const u8 *srdt) } /** + * pci_vpd_srdt_tag - Extracts the Small Resource Data Type Tag Item + * @lrdt: Pointer to the beginning of the Small Resource Data Type tag + * + * Returns the extracted Small Resource Data Type Tag Item. + */ +static inline u8 pci_vpd_srdt_tag(const u8 *srdt) +{ + return ((*srdt) & PCI_VPD_SRDT_TIN_MASK) >> 3; +} + +/** * pci_vpd_info_field_size - Extracts the information field length * @lrdt: Pointer to the beginning of an information field header *