Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754884AbcLNHTI (ORCPT ); Wed, 14 Dec 2016 02:19:08 -0500 Received: from mail-lf0-f67.google.com ([209.85.215.67]:32826 "EHLO mail-lf0-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752752AbcLNHSy (ORCPT ); Wed, 14 Dec 2016 02:18:54 -0500 From: Serge Semin To: jdmason@kudzu.us, dave.jiang@intel.com, Allen.Hubbe@emc.com, Xiangliang.Yu@amd.com Cc: Sergey.Semin@t-platforms.ru, linux-ntb@googlegroups.com, linux-kernel@vger.kernel.org, Serge Semin Subject: [PATCH v3 9/9] NTB: Add ntb.h comments Date: Wed, 14 Dec 2016 10:16:55 +0300 Message-Id: <1481699815-31008-1-git-send-email-fancer.lancer@gmail.com> X-Mailer: git-send-email 2.6.6 In-Reply-To: <1481672961-10753-10-git-send-email-fancer.lancer@gmail.com> References: <1481672961-10753-10-git-send-email-fancer.lancer@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3376 Lines: 93 Signed-off-by: Serge Semin --- include/linux/ntb.h | 19 ++++++++++++------- 1 file changed, 12 insertions(+), 7 deletions(-) diff --git a/include/linux/ntb.h b/include/linux/ntb.h index 6d46179..dab0a1b 100644 --- a/include/linux/ntb.h +++ b/include/linux/ntb.h @@ -326,12 +326,17 @@ static inline int ntb_dev_ops_is_valid(const struct ntb_dev_ops *ops) { /* commented callbacks are not required: */ return + /* Port operations are required for multiport devices */ !ops->peer_port_count == !ops->port_number && !ops->peer_port_number == !ops->port_number && !ops->peer_port_idx == !ops->port_number && + + /* Link operations are required */ ops->link_is_up && ops->link_enable && ops->link_disable && + + /* One or both MW interfaces should be developed */ ops->mw_count && ops->mw_get_align && (ops->mw_set_trans || @@ -341,12 +346,11 @@ static inline int ntb_dev_ops_is_valid(const struct ntb_dev_ops *ops) ops->peer_mw_get_addr && /* ops->peer_mw_clear_trans && */ + /* Doorbell operations are mostly required */ /* ops->db_is_unsafe && */ ops->db_valid_mask && - /* both set, or both unset */ - (!ops->db_vector_count == !ops->db_vector_mask) && - + (!ops->db_vector_count == !ops->db_vector_mask) && ops->db_read && /* ops->db_set && */ ops->db_clear && @@ -360,6 +364,8 @@ static inline int ntb_dev_ops_is_valid(const struct ntb_dev_ops *ops) /* ops->peer_db_read_mask && */ /* ops->peer_db_set_mask && */ /* ops->peer_db_clear_mask && */ + + /* Scrachpads interface is optional */ /* !ops->spad_is_unsafe == !ops->spad_count && */ !ops->spad_read == !ops->spad_count && !ops->spad_write == !ops->spad_count && @@ -367,6 +373,7 @@ static inline int ntb_dev_ops_is_valid(const struct ntb_dev_ops *ops) /* !ops->peer_spad_read == !ops->spad_count && */ !ops->peer_spad_write == !ops->spad_count && + /* Messaging interface is optional */ !ops->msg_inbits == !ops->msg_count && !ops->msg_outbits == !ops->msg_count && !ops->msg_read_sts == !ops->msg_count && @@ -387,13 +394,12 @@ struct ntb_client { struct device_driver drv; const struct ntb_client_ops ops; }; - #define drv_ntb_client(__drv) container_of((__drv), struct ntb_client, drv) /** * struct ntb_device - ntb device * @dev: Linux device object. - * @pdev: Pci device entry of the ntb. + * @pdev: PCI device entry of the ntb. * @topo: Detected topology of the ntb. * @ops: See &ntb_dev_ops. * @ctx: See &ntb_ctx_ops. @@ -414,7 +420,6 @@ struct ntb_dev { /* block unregister until device is fully released */ struct completion released; }; - #define dev_ntb(__dev) container_of((__dev), struct ntb_dev, dev) /** @@ -511,7 +516,7 @@ void ntb_link_event(struct ntb_dev *ntb); * multiple interrupt vectors for doorbells, the vector number indicates which * vector received the interrupt. The vector number is relative to the first * vector used for doorbells, starting at zero, and must be less than - ** ntb_db_vector_count(). The driver may call ntb_db_read() to check which + * ntb_db_vector_count(). The driver may call ntb_db_read() to check which * doorbell bits need service, and ntb_db_vector_mask() to determine which of * those bits are associated with the vector number. */ -- 2.6.6