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Miller" , Andreas Larsson , sparclinux@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, Bjorn Helgaas Subject: [PATCH v2 1/4] PCI: Unexport of_pci_parse_bus_range() Date: Mon, 13 Jan 2025 17:15:54 -0600 Message-Id: <20250113231557.441289-2-helgaas@kernel.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250113231557.441289-1-helgaas@kernel.org> References: <20250113231557.441289-1-helgaas@kernel.org> Precedence: bulk X-Mailing-List: sparclinux@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Spam-Status: No, score=-3.5 required=5.0 tests=ARC_SIGNED,ARC_VALID, DKIMWL_WL_HIGH,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DMARC_PASS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,SPF_HELO_NONE,SPF_PASS autolearn=disabled version=4.0.0 X-Spam-Checker-Version: SpamAssassin 4.0.0 (2022-12-13) on gandalf.ozlabs.org From: Bjorn Helgaas of_pci_parse_bus_range() is only used in drivers/pci/of.c, so make it static and unexport it. Signed-off-by: Bjorn Helgaas Reviewed-by: Rob Herring (Arm) Reviewed-by: Kuppuswamy Sathyanarayanan --- drivers/pci/of.c | 4 ++-- drivers/pci/pci.h | 7 ------- 2 files changed, 2 insertions(+), 9 deletions(-) diff --git a/drivers/pci/of.c b/drivers/pci/of.c index 52f770bcc481..2f579b691f8e 100644 --- a/drivers/pci/of.c +++ b/drivers/pci/of.c @@ -190,7 +190,8 @@ EXPORT_SYMBOL_GPL(of_pci_get_devfn); * * Returns 0 on success or a negative error-code on failure. */ -int of_pci_parse_bus_range(struct device_node *node, struct resource *res) +static int of_pci_parse_bus_range(struct device_node *node, + struct resource *res) { u32 bus_range[2]; int error; @@ -207,7 +208,6 @@ int of_pci_parse_bus_range(struct device_node *node, struct resource *res) return 0; } -EXPORT_SYMBOL_GPL(of_pci_parse_bus_range); /** * of_get_pci_domain_nr - Find the host bridge domain number diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h index 2e40fc63ba31..35faf4770a14 100644 --- a/drivers/pci/pci.h +++ b/drivers/pci/pci.h @@ -797,7 +797,6 @@ static inline u64 pci_rebar_size_to_bytes(int size) struct device_node; #ifdef CONFIG_OF -int of_pci_parse_bus_range(struct device_node *node, struct resource *res); int of_get_pci_domain_nr(struct device_node *node); int of_pci_get_max_link_speed(struct device_node *node); u32 of_pci_get_slot_power_limit(struct device_node *node, @@ -813,12 +812,6 @@ int devm_of_pci_bridge_init(struct device *dev, struct pci_host_bridge *bridge); bool of_pci_supply_present(struct device_node *np); #else -static inline int -of_pci_parse_bus_range(struct device_node *node, struct resource *res) -{ - return -EINVAL; -} - static inline int of_get_pci_domain_nr(struct device_node *node) { From patchwork Mon Jan 13 23:15:55 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bjorn Helgaas X-Patchwork-Id: 2033931 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20201202 header.b=uJMk1SlK; 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Miller" , Andreas Larsson , sparclinux@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, Bjorn Helgaas Subject: [PATCH v2 2/4] PCI: of: Drop 'No bus range found' message Date: Mon, 13 Jan 2025 17:15:55 -0600 Message-Id: <20250113231557.441289-3-helgaas@kernel.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250113231557.441289-1-helgaas@kernel.org> References: <20250113231557.441289-1-helgaas@kernel.org> Precedence: bulk X-Mailing-List: sparclinux@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Spam-Status: No, score=-3.5 required=5.0 tests=ARC_SIGNED,ARC_VALID, DKIMWL_WL_HIGH,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DMARC_PASS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,SPF_HELO_NONE,SPF_PASS autolearn=disabled version=4.0.0 X-Spam-Checker-Version: SpamAssassin 4.0.0 (2022-12-13) on gandalf.ozlabs.org From: Bjorn Helgaas The typical bus range for a host bridge is [bus 00-ff], and devm_of_pci_get_host_bridge_resources() defaults to that unless DT contains a "bus-range" property. devm_of_pci_get_host_bridge_resources() previously emitted a message when there was no "bus-range" property, but that seems unnecessary for this common situation. Remove the message. Signed-off-by: Bjorn Helgaas Reviewed-by: Kuppuswamy Sathyanarayanan --- drivers/pci/of.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/drivers/pci/of.c b/drivers/pci/of.c index 2f579b691f8e..48b9274b846e 100644 --- a/drivers/pci/of.c +++ b/drivers/pci/of.c @@ -346,8 +346,6 @@ static int devm_of_pci_get_host_bridge_resources(struct device *dev, bus_range->start = busno; bus_range->end = bus_max; bus_range->flags = IORESOURCE_BUS; - dev_info(dev, " No bus range found for %pOF, using %pR\n", - dev_node, bus_range); } else { if (bus_range->end > bus_range->start + bus_max) bus_range->end = bus_range->start + bus_max; From patchwork Mon Jan 13 23:15:56 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bjorn Helgaas X-Patchwork-Id: 2033932 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20201202 header.b=anx6QIs1; 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Miller" , Andreas Larsson , sparclinux@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, Bjorn Helgaas Subject: [PATCH v2 3/4] PCI: of: Simplify devm_of_pci_get_host_bridge_resources() interface Date: Mon, 13 Jan 2025 17:15:56 -0600 Message-Id: <20250113231557.441289-4-helgaas@kernel.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250113231557.441289-1-helgaas@kernel.org> References: <20250113231557.441289-1-helgaas@kernel.org> Precedence: bulk X-Mailing-List: sparclinux@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Spam-Status: No, score=-3.5 required=5.0 tests=ARC_SIGNED,ARC_VALID, DKIMWL_WL_HIGH,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DMARC_PASS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,SPF_HELO_NONE,SPF_PASS autolearn=disabled version=4.0.0 X-Spam-Checker-Version: SpamAssassin 4.0.0 (2022-12-13) on gandalf.ozlabs.org From: Bjorn Helgaas Previously pci_parse_request_of_pci_ranges() supplied the default bus range to devm_of_pci_get_host_bridge_resources(), but that function is static and has no other callers, so there's no reason to complicate its interface by passing the default bus range. Drop the busno and bus_max parameters and use 0x0 and 0xff directly in devm_of_pci_get_host_bridge_resources(). Signed-off-by: Bjorn Helgaas --- drivers/pci/of.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/drivers/pci/of.c b/drivers/pci/of.c index 48b9274b846e..a2acfc52caf4 100644 --- a/drivers/pci/of.c +++ b/drivers/pci/of.c @@ -302,8 +302,6 @@ EXPORT_SYMBOL_GPL(of_pci_check_probe_only); * devm_of_pci_get_host_bridge_resources() - Resource-managed parsing of PCI * host bridge resources from DT * @dev: host bridge device - * @busno: bus number associated with the bridge root bus - * @bus_max: maximum number of buses for this bridge * @resources: list where the range of resources will be added after DT parsing * @ib_resources: list where the range of inbound resources (with addresses * from 'dma-ranges') will be added after DT parsing @@ -319,7 +317,6 @@ EXPORT_SYMBOL_GPL(of_pci_check_probe_only); * value if it failed. */ static int devm_of_pci_get_host_bridge_resources(struct device *dev, - unsigned char busno, unsigned char bus_max, struct list_head *resources, struct list_head *ib_resources, resource_size_t *io_base) @@ -343,12 +340,15 @@ static int devm_of_pci_get_host_bridge_resources(struct device *dev, err = of_pci_parse_bus_range(dev_node, bus_range); if (err) { - bus_range->start = busno; - bus_range->end = bus_max; + bus_range->start = 0; + bus_range->end = 0xff; bus_range->flags = IORESOURCE_BUS; } else { - if (bus_range->end > bus_range->start + bus_max) - bus_range->end = bus_range->start + bus_max; + if (bus_range->end > 0xff) { + dev_info(dev, " Invalid end bus number in %pR, defaulting to 0xff\n", + bus_range); + bus_range->end = 0xff; + } } pci_add_resource(resources, bus_range); @@ -595,7 +595,7 @@ static int pci_parse_request_of_pci_ranges(struct device *dev, INIT_LIST_HEAD(&bridge->windows); INIT_LIST_HEAD(&bridge->dma_ranges); - err = devm_of_pci_get_host_bridge_resources(dev, 0, 0xff, &bridge->windows, + err = devm_of_pci_get_host_bridge_resources(dev, &bridge->windows, &bridge->dma_ranges, &iobase); if (err) return err; From patchwork Mon Jan 13 23:15:57 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bjorn Helgaas X-Patchwork-Id: 2033934 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; 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Miller" , Andreas Larsson , sparclinux@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, Bjorn Helgaas Subject: [PATCH v2 4/4] sparc/PCI: Update reference to devm_of_pci_get_host_bridge_resources() Date: Mon, 13 Jan 2025 17:15:57 -0600 Message-Id: <20250113231557.441289-5-helgaas@kernel.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250113231557.441289-1-helgaas@kernel.org> References: <20250113231557.441289-1-helgaas@kernel.org> Precedence: bulk X-Mailing-List: sparclinux@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Spam-Status: No, score=-3.5 required=5.0 tests=ARC_SIGNED,ARC_VALID, DKIMWL_WL_HIGH,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DMARC_PASS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,SPF_HELO_NONE,SPF_PASS autolearn=disabled version=4.0.0 X-Spam-Checker-Version: SpamAssassin 4.0.0 (2022-12-13) on gandalf.ozlabs.org From: Bjorn Helgaas 5bd51b35c7cb ("PCI: Rework of_pci_get_host_bridge_resources() to devm_of_pci_get_host_bridge_resources()") converted and renamed of_pci_get_host_bridge_resources(). Update the comment reference to match. Signed-off-by: Bjorn Helgaas Acked-by: Andreas Larsson Reviewed-by: Kuppuswamy Sathyanarayanan --- arch/sparc/kernel/pci_common.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/sparc/kernel/pci_common.c b/arch/sparc/kernel/pci_common.c index 5eeec9ad6845..2576f4f31309 100644 --- a/arch/sparc/kernel/pci_common.c +++ b/arch/sparc/kernel/pci_common.c @@ -361,7 +361,7 @@ void pci_determine_mem_io_space(struct pci_pbm_info *pbm) int i, saw_mem, saw_io; int num_pbm_ranges; - /* Corresponding generic code in of_pci_get_host_bridge_resources() */ + /* Corresponds to generic devm_of_pci_get_host_bridge_resources() */ saw_mem = saw_io = 0; pbm_ranges = of_get_property(pbm->op->dev.of_node, "ranges", &i);