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Wed, 02 Aug 2023 08:00:46 -0700 (PDT) From: Anup Patel To: Palmer Dabbelt , Paul Walmsley , Thomas Gleixner , Marc Zyngier , Rob Herring , Krzysztof Kozlowski , Frank Rowand , Conor Dooley Subject: [PATCH v7 02/15] of: property: Add fw_devlink support for msi-parent Date: Wed, 2 Aug 2023 20:30:05 +0530 Message-Id: <20230802150018.327079-3-apatel@ventanamicro.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230802150018.327079-1-apatel@ventanamicro.com> References: <20230802150018.327079-1-apatel@ventanamicro.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230802_080047_731704_B05B2CD5 X-CRM114-Status: GOOD ( 12.79 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Anup Patel , devicetree@vger.kernel.org, Saravana Kannan , Anup Patel , linux-kernel@vger.kernel.org, Atish Patra , linux-riscv@lists.infradead.org, Andrew Jones Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org This allows fw_devlink to create device links between consumers of a MSI and the supplier of the MSI. Signed-off-by: Anup Patel --- drivers/of/property.c | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) diff --git a/drivers/of/property.c b/drivers/of/property.c index ddc75cd50825..bc20535deed7 100644 --- a/drivers/of/property.c +++ b/drivers/of/property.c @@ -1325,6 +1325,37 @@ static struct device_node *parse_interrupts(struct device_node *np, return of_irq_parse_one(np, index, &sup_args) ? NULL : sup_args.np; } +static struct device_node *parse_msi_parent(struct device_node *np, + const char *prop_name, int index) +{ + struct of_phandle_args sup_args; + struct device_node *msi_np; + + if (IS_ENABLED(CONFIG_SPARC)) + return NULL; + + if (strcmp(prop_name, "msi-parent")) + return NULL; + + msi_np = of_parse_phandle(np, prop_name, 0); + if (msi_np) { + if (!of_property_read_bool(msi_np, "#msi-cells")) { + if (index) { + of_node_put(msi_np); + return NULL; + } + return msi_np; + } + of_node_put(msi_np); + } + + if (of_parse_phandle_with_args(np, prop_name, "#msi-cells", index, + &sup_args)) + return NULL; + + return sup_args.np; +} + static const struct supplier_bindings of_supplier_bindings[] = { { .parse_prop = parse_clocks, }, { .parse_prop = parse_interconnects, }, @@ -1359,6 +1390,7 @@ static const struct supplier_bindings of_supplier_bindings[] = { { .parse_prop = parse_regulators, }, { .parse_prop = parse_gpio, }, { .parse_prop = parse_gpios, }, + { .parse_prop = parse_msi_parent, }, {} }; -- 2.34.1 _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 08D5CC001DF for ; Wed, 2 Aug 2023 15:01:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232481AbjHBPA7 (ORCPT ); Wed, 2 Aug 2023 11:00:59 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53440 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234547AbjHBPAt (ORCPT ); Wed, 2 Aug 2023 11:00:49 -0400 Received: from mail-pl1-x633.google.com (mail-pl1-x633.google.com [IPv6:2607:f8b0:4864:20::633]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B0A9F2103 for ; 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Wed, 02 Aug 2023 08:00:46 -0700 (PDT) From: Anup Patel To: Palmer Dabbelt , Paul Walmsley , Thomas Gleixner , Marc Zyngier , Rob Herring , Krzysztof Kozlowski , Frank Rowand , Conor Dooley Cc: Atish Patra , Andrew Jones , Sunil V L , Saravana Kannan , Anup Patel , linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, Anup Patel Subject: [PATCH v7 02/15] of: property: Add fw_devlink support for msi-parent Date: Wed, 2 Aug 2023 20:30:05 +0530 Message-Id: <20230802150018.327079-3-apatel@ventanamicro.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230802150018.327079-1-apatel@ventanamicro.com> References: <20230802150018.327079-1-apatel@ventanamicro.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org This allows fw_devlink to create device links between consumers of a MSI and the supplier of the MSI. Signed-off-by: Anup Patel --- drivers/of/property.c | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) diff --git a/drivers/of/property.c b/drivers/of/property.c index ddc75cd50825..bc20535deed7 100644 --- a/drivers/of/property.c +++ b/drivers/of/property.c @@ -1325,6 +1325,37 @@ static struct device_node *parse_interrupts(struct device_node *np, return of_irq_parse_one(np, index, &sup_args) ? NULL : sup_args.np; } +static struct device_node *parse_msi_parent(struct device_node *np, + const char *prop_name, int index) +{ + struct of_phandle_args sup_args; + struct device_node *msi_np; + + if (IS_ENABLED(CONFIG_SPARC)) + return NULL; + + if (strcmp(prop_name, "msi-parent")) + return NULL; + + msi_np = of_parse_phandle(np, prop_name, 0); + if (msi_np) { + if (!of_property_read_bool(msi_np, "#msi-cells")) { + if (index) { + of_node_put(msi_np); + return NULL; + } + return msi_np; + } + of_node_put(msi_np); + } + + if (of_parse_phandle_with_args(np, prop_name, "#msi-cells", index, + &sup_args)) + return NULL; + + return sup_args.np; +} + static const struct supplier_bindings of_supplier_bindings[] = { { .parse_prop = parse_clocks, }, { .parse_prop = parse_interconnects, }, @@ -1359,6 +1390,7 @@ static const struct supplier_bindings of_supplier_bindings[] = { { .parse_prop = parse_regulators, }, { .parse_prop = parse_gpio, }, { .parse_prop = parse_gpios, }, + { .parse_prop = parse_msi_parent, }, {} }; -- 2.34.1