From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753003AbbLIBtY (ORCPT ); Tue, 8 Dec 2015 20:49:24 -0500 Received: from mail-by2on0067.outbound.protection.outlook.com ([207.46.100.67]:12704 "EHLO na01-by2-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752144AbbLIBsZ (ORCPT ); Tue, 8 Dec 2015 20:48:25 -0500 Authentication-Results: spf=none (sender IP is ) smtp.mailfrom=Suravee.Suthikulpanit@amd.com; From: Suravee Suthikulpanit To: , , , CC: Lorenzo Pieralisi , Will Deacon , Catalin Marinas , , , , , , , , Suravee Suthikulpanit Subject: [PATCH v5 1/5] acpi: pci: Setup MSI domain for ACPI based pci devices Date: Tue, 8 Dec 2015 17:48:02 -0800 Message-ID: <1449625686-5594-2-git-send-email-Suravee.Suthikulpanit@amd.com> X-Mailer: git-send-email 2.1.0 In-Reply-To: <1449625686-5594-1-git-send-email-Suravee.Suthikulpanit@amd.com> References: <1449625686-5594-1-git-send-email-Suravee.Suthikulpanit@amd.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [165.204.77.1] X-ClientProxiedBy: BLUPR05CA0068.namprd05.prod.outlook.com (10.141.20.38) To BY1PR12MB0437.namprd12.prod.outlook.com (25.162.147.139) X-Microsoft-Exchange-Diagnostics: 1;BY1PR12MB0437;2:wViXxO04p+GQLS/1cFZ+de+rhyb+ao/GgvQ33PYvTsreBF1ZHlnf9ngu0x4jEyLlYdSWZNqi8MVpDcrp4wh/hn7pn8NBgpVnQuUwI9nqRzUQwAVNQW6gxZpLuRe0vNkGAkUsZbDXxvl+CRWY0/sD7g==;3:EMievusRgMqSabFR0UH/4tEYa4zIUCxRBQYbQyfpIpu5Yg5Vb3vCjzXXJYNsezg4UIL3yR6uGMZGxiQ51rxxqbrXNskfK8jJRJM27EJqTHGJe4OyextIAV9JHyyXzHMr;25:Gf7HAm+q+t60PBufZeKnehAn3lylFSyZGdaNGAkrFJ9afLYsDJDeKZnrNWMXVwtmr4wzSvTh/PImP5pjl1sQaTA/AR64zMEdgKsbaK/+zByb43+y99CJQlxnNZebYB+JI4bKVhlLdm4OzuQVh8F/U/v1MLNpTPSSMDC7kr2YD3qPA4Yz9axR5pXabsOfpunBddJ+M4y5jb4FezjCSAOLD34NmYtOTAoH1OJUakJyc7eIo76ySI+0veeesBuecK++lmI0vF2Cs450EQ3YhxHhfQ== X-Microsoft-Antispam: UriScan:;BCL:0;PCL:0;RULEID:;SRVR:BY1PR12MB0437; 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It also introduces pci_host_bridge_acpi_msi_domain(), which returns the MSI domain of the specified PCI host bridge with DOMAIN_BUS_PCI_MSI bus token. Then, it is assigned to pci device. Signed-off-by: Suravee Suthikulpanit --- drivers/pci/pci-acpi.c | 32 ++++++++++++++++++++++++++++++++ drivers/pci/probe.c | 2 ++ include/linux/irqdomain.h | 5 +++++ include/linux/pci.h | 10 ++++++++++ 4 files changed, 49 insertions(+) diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c index a32ba75..a555d7e 100644 --- a/drivers/pci/pci-acpi.c +++ b/drivers/pci/pci-acpi.c @@ -9,7 +9,9 @@ #include #include +#include #include +#include #include #include #include @@ -689,6 +691,36 @@ static struct acpi_bus_type acpi_pci_bus = { .cleanup = pci_acpi_cleanup, }; + +static struct fwnode_handle *(*pci_msi_get_fwnode_cb)(struct device *dev); + +/** + * pci_msi_register_fwnode_provider - Register callback to retrieve fwnode + * @fn: The interrupt domain to retrieve + * + * This should be called by irqchip driver, which is the parent of + * the MSI domain to provide callback interface to query fwnode. + */ +void +pci_msi_register_fwnode_provider(struct fwnode_handle *(*fn)(struct device *)) +{ + pci_msi_get_fwnode_cb = fn; +} + +struct irq_domain *pci_host_bridge_acpi_msi_domain(struct pci_bus *bus) +{ + struct irq_domain *dom = NULL; + struct fwnode_handle *fwnode = NULL; + + if (pci_msi_get_fwnode_cb) + fwnode = pci_msi_get_fwnode_cb(&bus->dev); + + if (fwnode) + dom = irq_find_matching_fwnode(fwnode, + DOMAIN_BUS_PCI_MSI); + return dom; +} + static int __init acpi_pci_init(void) { int ret; diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index edb1984..553a029 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -672,6 +672,8 @@ static struct irq_domain *pci_host_bridge_msi_domain(struct pci_bus *bus) * should be called from here. */ d = pci_host_bridge_of_msi_domain(bus); + if (!d) + d = pci_host_bridge_acpi_msi_domain(bus); return d; } diff --git a/include/linux/irqdomain.h b/include/linux/irqdomain.h index d5e5c5b..a06feda 100644 --- a/include/linux/irqdomain.h +++ b/include/linux/irqdomain.h @@ -410,6 +410,11 @@ static inline bool irq_domain_is_hierarchy(struct irq_domain *domain) static inline void irq_dispose_mapping(unsigned int virq) { } static inline void irq_domain_activate_irq(struct irq_data *data) { } static inline void irq_domain_deactivate_irq(struct irq_data *data) { } +static inline struct irq_domain *irq_find_matching_fwnode( + struct fwnode_handle *fwnode, enum irq_domain_bus_token bus_token) +{ + return NULL; +} #endif /* !CONFIG_IRQ_DOMAIN */ #endif /* _LINUX_IRQDOMAIN_H */ diff --git a/include/linux/pci.h b/include/linux/pci.h index 6ae25aa..d86378c 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -1946,6 +1946,16 @@ static inline struct irq_domain * pci_host_bridge_of_msi_domain(struct pci_bus *bus) { return NULL; } #endif /* CONFIG_OF */ +#ifdef CONFIG_ACPI +struct irq_domain *pci_host_bridge_acpi_msi_domain(struct pci_bus *bus); + +void +pci_msi_register_fwnode_provider(struct fwnode_handle *(*fn)(struct device *)); +#else +static inline struct irq_domain * +pci_host_bridge_acpi_msi_domain(struct pci_bus *bus) { return NULL; } +#endif + #ifdef CONFIG_EEH static inline struct eeh_dev *pci_dev_to_eeh_dev(struct pci_dev *pdev) { -- 2.1.0 From mboxrd@z Thu Jan 1 00:00:00 1970 From: Suravee Suthikulpanit Subject: [PATCH v5 1/5] acpi: pci: Setup MSI domain for ACPI based pci devices Date: Tue, 8 Dec 2015 17:48:02 -0800 Message-ID: <1449625686-5594-2-git-send-email-Suravee.Suthikulpanit@amd.com> References: <1449625686-5594-1-git-send-email-Suravee.Suthikulpanit@amd.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1449625686-5594-1-git-send-email-Suravee.Suthikulpanit@amd.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org To: marc.zyngier@arm.com, tglx@linutronix.de, jason@lakedaemon.net, rjw@rjwysocki.net Cc: Lorenzo Pieralisi , graeme.gregory@linaro.org, Catalin Marinas , dhdang@apm.com, Will Deacon , linux-kernel@vger.kernel.org, tomasz.nowicki@linaro.org, linux-acpi@vger.kernel.org, hanjun.guo@linaro.org, Suravee Suthikulpanit , linux-arm-kernel@lists.infradead.org List-Id: linux-acpi@vger.kernel.org This patch introduces pci_msi_register_fwnode_provider() for irqchip to register a callback, to provide a way to determine appropriate MSI domain for a pci device. It also introduces pci_host_bridge_acpi_msi_domain(), which returns the MSI domain of the specified PCI host bridge with DOMAIN_BUS_PCI_MSI bus token. Then, it is assigned to pci device. Signed-off-by: Suravee Suthikulpanit --- drivers/pci/pci-acpi.c | 32 ++++++++++++++++++++++++++++++++ drivers/pci/probe.c | 2 ++ include/linux/irqdomain.h | 5 +++++ include/linux/pci.h | 10 ++++++++++ 4 files changed, 49 insertions(+) diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c index a32ba75..a555d7e 100644 --- a/drivers/pci/pci-acpi.c +++ b/drivers/pci/pci-acpi.c @@ -9,7 +9,9 @@ #include #include +#include #include +#include #include #include #include @@ -689,6 +691,36 @@ static struct acpi_bus_type acpi_pci_bus = { .cleanup = pci_acpi_cleanup, }; + +static struct fwnode_handle *(*pci_msi_get_fwnode_cb)(struct device *dev); + +/** + * pci_msi_register_fwnode_provider - Register callback to retrieve fwnode + * @fn: The interrupt domain to retrieve + * + * This should be called by irqchip driver, which is the parent of + * the MSI domain to provide callback interface to query fwnode. + */ +void +pci_msi_register_fwnode_provider(struct fwnode_handle *(*fn)(struct device *)) +{ + pci_msi_get_fwnode_cb = fn; +} + +struct irq_domain *pci_host_bridge_acpi_msi_domain(struct pci_bus *bus) +{ + struct irq_domain *dom = NULL; + struct fwnode_handle *fwnode = NULL; + + if (pci_msi_get_fwnode_cb) + fwnode = pci_msi_get_fwnode_cb(&bus->dev); + + if (fwnode) + dom = irq_find_matching_fwnode(fwnode, + DOMAIN_BUS_PCI_MSI); + return dom; +} + static int __init acpi_pci_init(void) { int ret; diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index edb1984..553a029 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -672,6 +672,8 @@ static struct irq_domain *pci_host_bridge_msi_domain(struct pci_bus *bus) * should be called from here. */ d = pci_host_bridge_of_msi_domain(bus); + if (!d) + d = pci_host_bridge_acpi_msi_domain(bus); return d; } diff --git a/include/linux/irqdomain.h b/include/linux/irqdomain.h index d5e5c5b..a06feda 100644 --- a/include/linux/irqdomain.h +++ b/include/linux/irqdomain.h @@ -410,6 +410,11 @@ static inline bool irq_domain_is_hierarchy(struct irq_domain *domain) static inline void irq_dispose_mapping(unsigned int virq) { } static inline void irq_domain_activate_irq(struct irq_data *data) { } static inline void irq_domain_deactivate_irq(struct irq_data *data) { } +static inline struct irq_domain *irq_find_matching_fwnode( + struct fwnode_handle *fwnode, enum irq_domain_bus_token bus_token) +{ + return NULL; +} #endif /* !CONFIG_IRQ_DOMAIN */ #endif /* _LINUX_IRQDOMAIN_H */ diff --git a/include/linux/pci.h b/include/linux/pci.h index 6ae25aa..d86378c 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -1946,6 +1946,16 @@ static inline struct irq_domain * pci_host_bridge_of_msi_domain(struct pci_bus *bus) { return NULL; } #endif /* CONFIG_OF */ +#ifdef CONFIG_ACPI +struct irq_domain *pci_host_bridge_acpi_msi_domain(struct pci_bus *bus); + +void +pci_msi_register_fwnode_provider(struct fwnode_handle *(*fn)(struct device *)); +#else +static inline struct irq_domain * +pci_host_bridge_acpi_msi_domain(struct pci_bus *bus) { return NULL; } +#endif + #ifdef CONFIG_EEH static inline struct eeh_dev *pci_dev_to_eeh_dev(struct pci_dev *pdev) { -- 2.1.0 From mboxrd@z Thu Jan 1 00:00:00 1970 From: Suravee.Suthikulpanit@amd.com (Suravee Suthikulpanit) Date: Tue, 8 Dec 2015 17:48:02 -0800 Subject: [PATCH v5 1/5] acpi: pci: Setup MSI domain for ACPI based pci devices In-Reply-To: <1449625686-5594-1-git-send-email-Suravee.Suthikulpanit@amd.com> References: <1449625686-5594-1-git-send-email-Suravee.Suthikulpanit@amd.com> Message-ID: <1449625686-5594-2-git-send-email-Suravee.Suthikulpanit@amd.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org This patch introduces pci_msi_register_fwnode_provider() for irqchip to register a callback, to provide a way to determine appropriate MSI domain for a pci device. It also introduces pci_host_bridge_acpi_msi_domain(), which returns the MSI domain of the specified PCI host bridge with DOMAIN_BUS_PCI_MSI bus token. Then, it is assigned to pci device. Signed-off-by: Suravee Suthikulpanit --- drivers/pci/pci-acpi.c | 32 ++++++++++++++++++++++++++++++++ drivers/pci/probe.c | 2 ++ include/linux/irqdomain.h | 5 +++++ include/linux/pci.h | 10 ++++++++++ 4 files changed, 49 insertions(+) diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c index a32ba75..a555d7e 100644 --- a/drivers/pci/pci-acpi.c +++ b/drivers/pci/pci-acpi.c @@ -9,7 +9,9 @@ #include #include +#include #include +#include #include #include #include @@ -689,6 +691,36 @@ static struct acpi_bus_type acpi_pci_bus = { .cleanup = pci_acpi_cleanup, }; + +static struct fwnode_handle *(*pci_msi_get_fwnode_cb)(struct device *dev); + +/** + * pci_msi_register_fwnode_provider - Register callback to retrieve fwnode + * @fn: The interrupt domain to retrieve + * + * This should be called by irqchip driver, which is the parent of + * the MSI domain to provide callback interface to query fwnode. + */ +void +pci_msi_register_fwnode_provider(struct fwnode_handle *(*fn)(struct device *)) +{ + pci_msi_get_fwnode_cb = fn; +} + +struct irq_domain *pci_host_bridge_acpi_msi_domain(struct pci_bus *bus) +{ + struct irq_domain *dom = NULL; + struct fwnode_handle *fwnode = NULL; + + if (pci_msi_get_fwnode_cb) + fwnode = pci_msi_get_fwnode_cb(&bus->dev); + + if (fwnode) + dom = irq_find_matching_fwnode(fwnode, + DOMAIN_BUS_PCI_MSI); + return dom; +} + static int __init acpi_pci_init(void) { int ret; diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index edb1984..553a029 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -672,6 +672,8 @@ static struct irq_domain *pci_host_bridge_msi_domain(struct pci_bus *bus) * should be called from here. */ d = pci_host_bridge_of_msi_domain(bus); + if (!d) + d = pci_host_bridge_acpi_msi_domain(bus); return d; } diff --git a/include/linux/irqdomain.h b/include/linux/irqdomain.h index d5e5c5b..a06feda 100644 --- a/include/linux/irqdomain.h +++ b/include/linux/irqdomain.h @@ -410,6 +410,11 @@ static inline bool irq_domain_is_hierarchy(struct irq_domain *domain) static inline void irq_dispose_mapping(unsigned int virq) { } static inline void irq_domain_activate_irq(struct irq_data *data) { } static inline void irq_domain_deactivate_irq(struct irq_data *data) { } +static inline struct irq_domain *irq_find_matching_fwnode( + struct fwnode_handle *fwnode, enum irq_domain_bus_token bus_token) +{ + return NULL; +} #endif /* !CONFIG_IRQ_DOMAIN */ #endif /* _LINUX_IRQDOMAIN_H */ diff --git a/include/linux/pci.h b/include/linux/pci.h index 6ae25aa..d86378c 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -1946,6 +1946,16 @@ static inline struct irq_domain * pci_host_bridge_of_msi_domain(struct pci_bus *bus) { return NULL; } #endif /* CONFIG_OF */ +#ifdef CONFIG_ACPI +struct irq_domain *pci_host_bridge_acpi_msi_domain(struct pci_bus *bus); + +void +pci_msi_register_fwnode_provider(struct fwnode_handle *(*fn)(struct device *)); +#else +static inline struct irq_domain * +pci_host_bridge_acpi_msi_domain(struct pci_bus *bus) { return NULL; } +#endif + #ifdef CONFIG_EEH static inline struct eeh_dev *pci_dev_to_eeh_dev(struct pci_dev *pdev) { -- 2.1.0