- 07 Dec, 2014 1 commit
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Thomas Gleixner authored
No point to expose this to the world. The only legitimate user is the core code. Signed-off-by:
Thomas Gleixner <tglx@linutronix.de> Cc: Jiang Liu <jiang.liu@linux.intel.com> Cc: Marc Zyngier <marc.zyngier@arm.com>
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- 23 Nov, 2014 28 commits
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Marc Zyngier authored
With the new stacked irq domains, it becomes pretty tempting to allocate an MSI domain per PCI bus, which would remove the requirement of either relying on arch-specific code, or a default PCI MSI domain. By allowing the msi_controller structure to carry a pointer to an irq_domain, we can easily use this in pci_msi_setup_msi_irqs. The existing code can still be used as a fallback if the MSI driver does not populate the domain field. Tested on arm64 with the GICv3 ITS driver. Signed-off-by:
Marc Zyngier <marc.zyngier@arm.com> Cc: Yingjoe Chen <yingjoe.chen@mediatek.com> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: linux-arm-kernel@lists.infradead.org Cc: Jiang Liu <jiang.liu@linux.intel.com> Link: http://lkml.kernel.org/r/1416048553-29289-2-git-send-email-marc.zyngier@arm.comSigned-off-by:
Thomas Gleixner <tglx@linutronix.de>
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Jiang Liu authored
Provide mechanism to directly alloc/free MSI/MSIX interrupt from irqdomain, which will be used to replace arch_setup_msi_irq()/ arch_setup_msi_irqs()/arch_teardown_msi_irq()/arch_teardown_msi_irqs(). To kill weak functions, this patch introduce a new weak function arch_get_pci_msi_domain(), which is to retrieve the MSI irqdomain for a PCI device. This weak function could be killed once we get a common way to associate MSI domain with PCI device. Signed-off-by:
Jiang Liu <jiang.liu@linux.intel.com> Cc: Tony Luck <tony.luck@intel.com> Cc: linux-arm-kernel@lists.infradead.org Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Grant Likely <grant.likely@linaro.org> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Yijing Wang <wangyijing@huawei.com> Cc: Yingjoe Chen <yingjoe.chen@mediatek.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Matthias Brugger <matthias.bgg@gmail.com> Cc: Alexander Gordeev <agordeev@redhat.com> Link: http://lkml.kernel.org/r/1416061447-9472-10-git-send-email-jiang.liu@linux.intel.comSigned-off-by:
Thomas Gleixner <tglx@linutronix.de>
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Jiang Liu authored
Enhance PCI MSI core to support hierarchy irqdomain, so the common code can be shared across architectures. [ tglx: Extracted and combined from several patches ] Signed-off-by:
Jiang Liu <jiang.liu@linux.intel.com> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Grant Likely <grant.likely@linaro.org> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Yingjoe Chen <yingjoe.chen@mediatek.com> Cc: Yijing Wang <wangyijing@huawei.com> Signed-off-by:
Thomas Gleixner <tglx@linutronix.de>
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Jiang Liu authored
Required to support non PCI based MSI. [ tglx: Extracted from Jiangs patch series ] Signed-off-by:
Jiang Liu <jiang.liu@linux.intel.com> Signed-off-by:
Thomas Gleixner <tglx@linutronix.de>
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Jiang Liu authored
Extend struct msi_domain_info and provide default callbacks for msi_domain_ops. Signed-off-by:
Jiang Liu <jiang.liu@linux.intel.com> Cc: Tony Luck <tony.luck@intel.com> Cc: linux-arm-kernel@lists.infradead.org Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Grant Likely <grant.likely@linaro.org> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Yijing Wang <wangyijing@huawei.com> Cc: Yingjoe Chen <yingjoe.chen@mediatek.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Matthias Brugger <matthias.bgg@gmail.com> Cc: Alexander Gordeev <agordeev@redhat.com> Link: http://lkml.kernel.org/r/1416061447-9472-8-git-send-email-jiang.liu@linux.intel.comSigned-off-by:
Thomas Gleixner <tglx@linutronix.de>
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Jiang Liu authored
Introduce msi_domain_{alloc|free}_irqs() to alloc/free interrupts from generic MSI irqdomain. Signed-off-by:
Jiang Liu <jiang.liu@linux.intel.com> Cc: Tony Luck <tony.luck@intel.com> Cc: linux-arm-kernel@lists.infradead.org Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Grant Likely <grant.likely@linaro.org> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Yijing Wang <wangyijing@huawei.com> Cc: Yingjoe Chen <yingjoe.chen@mediatek.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Matthias Brugger <matthias.bgg@gmail.com> Cc: Alexander Gordeev <agordeev@redhat.com> Link: http://lkml.kernel.org/r/1416061447-9472-7-git-send-email-jiang.liu@linux.intel.comSigned-off-by:
Thomas Gleixner <tglx@linutronix.de>
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Thomas Gleixner authored
To support MSI irq domains we want a generic data structure for allocation, but we need the option to provide an architecture specific version of it. So instead of playing #ifdef games in linux/msi.h we add a generic header file and let architectures decide whether to include it or to provide their own implementation and provide the required typedef. I know that typedefs are not really nice, but in this case there are no forward declarations required and it's the simplest solution. Signed-off-by:
Thomas Gleixner <tglx@linutronix.de> Acked-by:
Arnd Bergmann <arnd@arndb.de> Cc: Jiang Liu <jiang.liu@linux.intel.com> Cc: Tony Luck <tony.luck@intel.com> Cc: linux-arm-kernel@lists.infradead.org Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Grant Likely <grant.likely@linaro.org> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Yijing Wang <wangyijing@huawei.com> Cc: Yingjoe Chen <yingjoe.chen@mediatek.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Matthias Brugger <matthias.bgg@gmail.com> Cc: Alexander Gordeev <agordeev@redhat.com>
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Jiang Liu authored
Implement the basic functions for MSI interrupt support with hierarchical interrupt domains. [ tglx: Extracted and combined from several patches ] Signed-off-by:
Jiang Liu <jiang.liu@linux.intel.com> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Grant Likely <grant.likely@linaro.org> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Yingjoe Chen <yingjoe.chen@mediatek.com> Cc: Yijing Wang <wangyijing@huawei.com> Signed-off-by:
Thomas Gleixner <tglx@linutronix.de>
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Jiang Liu authored
Introduce callback irq_chip.irq_write_msi_msg, so we can share common code among MSI alike interrupt controllers, such as HPET and DMAR. Signed-off-by:
Jiang Liu <jiang.liu@linux.intel.com> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Grant Likely <grant.likely@linaro.org> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Yingjoe Chen <yingjoe.chen@mediatek.com> Cc: Yijing Wang <wangyijing@huawei.com> Signed-off-by:
Thomas Gleixner <tglx@linutronix.de>
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Marc Zyngier authored
With the introduction of stacked domains, we have the issue that, depending on where in the stack this is called, __irq_set_handler will succeed or fail: If this is called from the inner irqchip, __irq_set_handler() will fail, as it will look at the outer domain as the (desc->irq_data.chip == &no_irq_chip) test fails (we haven't set the top level yet). This patch implements the following: "If there is at least one valid irqchip in the domain, it will probably sort itself out". This is clearly not ideal, but it is far less confusing then crashing because the top-level domain is not up yet. [ tglx: Added comment and a protection against chained interrupts in that context ] Signed-off-by:
Marc Zyngier <marc.zyngier@arm.com> Cc: Yingjoe Chen <yingjoe.chen@mediatek.com> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: linux-arm-kernel@lists.infradead.org Cc: Jiang Liu <jiang.liu@linux.intel.com> Link: http://lkml.kernel.org/r/1416048553-29289-3-git-send-email-marc.zyngier@arm.comSigned-off-by:
Thomas Gleixner <tglx@linutronix.de>
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Jiang Liu authored
Introduce helper function irq_domain_add_hierarchy(), which creates a linear irqdomain if parameter 'size' is not zero, otherwise creates a tree irqdomain. Signed-off-by:
Jiang Liu <jiang.liu@linux.intel.com> Cc: Tony Luck <tony.luck@intel.com> Cc: linux-arm-kernel@lists.infradead.org Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Grant Likely <grant.likely@linaro.org> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Yijing Wang <wangyijing@huawei.com> Cc: Yingjoe Chen <yingjoe.chen@mediatek.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Matthias Brugger <matthias.bgg@gmail.com> Link: http://lkml.kernel.org/r/1416061447-9472-5-git-send-email-jiang.liu@linux.intel.comSigned-off-by:
Thomas Gleixner <tglx@linutronix.de>
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Jiang Liu authored
Add a flags to irq_domain.flags to control whether the irqdomain core should automatically call parent irqdomain's alloc/free callbacks. It help to reduce hierarchy irqdomains users' code size. Signed-off-by:
Jiang Liu <jiang.liu@linux.intel.com> Cc: Tony Luck <tony.luck@intel.com> Cc: linux-arm-kernel@lists.infradead.org Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Grant Likely <grant.likely@linaro.org> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Yijing Wang <wangyijing@huawei.com> Cc: Yingjoe Chen <yingjoe.chen@mediatek.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Matthias Brugger <matthias.bgg@gmail.com> Link: http://lkml.kernel.org/r/1416061447-9472-4-git-send-email-jiang.liu@linux.intel.comSigned-off-by:
Thomas Gleixner <tglx@linutronix.de>
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Jiang Liu authored
Signed-off-by:
Jiang Liu <jiang.liu@linux.intel.com> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Grant Likely <grant.likely@linaro.org> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Yingjoe Chen <yingjoe.chen@mediatek.com> Cc: Yijing Wang <wangyijing@huawei.com> Signed-off-by:
Thomas Gleixner <tglx@linutronix.de>
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Thomas Gleixner authored
Required to avoid circular include dependencies. Signed-off-by:
Thomas Gleixner <tglx@linutronix.de>
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Jiang Liu authored
Add IRQ_SET_MASK_OK_DONE in addition to IRQ_SET_MASK_OK and IRQ_SET_MASK_OK_NOCOPY to support stacked irqchip. IRQ_SET_MASK_OK_DONE is the same as IRQ_SET_MASK_OK to irq core. To stacked irqchip, it means that ascendant irqchips have done all the work and no more handling needed in descendant irqchips. Signed-off-by:
Jiang Liu <jiang.liu@linux.intel.com> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Grant Likely <grant.likely@linaro.org> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Yingjoe Chen <yingjoe.chen@mediatek.com> Cc: Yijing Wang <wangyijing@huawei.com> Signed-off-by:
Thomas Gleixner <tglx@linutronix.de>
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Jiang Liu authored
Add callback irq_compose_msi_msg to struct irq_chip, which will be used to support stacked irqchip. Signed-off-by:
Jiang Liu <jiang.liu@linux.intel.com> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Grant Likely <grant.likely@linaro.org> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Yingjoe Chen <yingjoe.chen@mediatek.com> Cc: Yijing Wang <wangyijing@huawei.com> Signed-off-by:
Thomas Gleixner <tglx@linutronix.de>
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Yingjoe Chen authored
Add more helper function for stacked irq_chip to just call parent's function. Signed-off-by:
Yingjoe Chen <yingjoe.chen@mediatek.com> Cc: Rob Herring <robh+dt@kernel.org> Cc: Pawel Moll <pawel.moll@arm.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Matthias Brugger <matthias.bgg@gmail.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Jason Cooper <jason@lakedaemon.net> Cc: Gran Likely <grant.likely@linaro.org> Cc: Boris BREZILLON <boris.brezillon@free-electrons.com> Cc: <linux-arm-kernel@lists.infradead.org> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Yijing Wang <wangyijing@huawei.com> Cc: <srv_heupstream@mediatek.com> Cc: <yingjoe.chen@gmail.com> Cc: <hc.yen@mediatek.com> Cc: <eddie.huang@mediatek.com> Cc: <nathan.chung@mediatek.com> Cc: <yh.chen@mediatek.com> Cc: Sascha Hauer <kernel@pengutronix.de> Cc: Jiang Liu <jiang.liu@linux.intel.com> Cc: Marc Zyngier <marc.zyngier@arm.com> Link: http://lkml.kernel.org/r/1415893029-2971-3-git-send-email-yingjoe.chen@mediatek.comSigned-off-by:
Thomas Gleixner <tglx@linutronix.de>
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Jiang Liu authored
Now we already support hierarchy irq_data, so introduce several helpers to support stacked irq_chips. Signed-off-by:
Jiang Liu <jiang.liu@linux.intel.com> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Grant Likely <grant.likely@linaro.org> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Yingjoe Chen <yingjoe.chen@mediatek.com> Cc: Yijing Wang <wangyijing@huawei.com> Signed-off-by:
Thomas Gleixner <tglx@linutronix.de>
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Yingjoe Chen authored
It is possible to call irq_create_of_mapping to create/translate the same IRQ from DT for multiple times. Perform irq_find_mapping check and set_type for hierarchy irqdomain in irq_create_of_mapping() to avoid duplicate these functionality in all outer most irqdomain. Signed-off-by:
Yingjoe Chen <yingjoe.chen@mediatek.com> Signed-off-by:
Jiang Liu <jiang.liu@linux.intel.com> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Grant Likely <grant.likely@linaro.org> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Yingjoe Chen <yingjoe.chen@mediatek.com> Cc: Yijing Wang <wangyijing@huawei.com> Signed-off-by:
Thomas Gleixner <tglx@linutronix.de>
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Jiang Liu authored
We plan to use hierarchy irqdomain to suppport CPU vector assignment, interrupt remapping controller, IO-APIC controller, MSI interrupt and hypertransport interrupt etc on x86 platforms. So extend irqdomain interfaces to support hierarchy irqdomain. There are already many clients of current irqdomain interfaces. To minimize the changes, we choose to introduce new version 2 interfaces to support hierarchy instead of extending existing irqdomain interfaces. According to Thomas's suggestion, the most important design decision is to build hierarchy struct irq_data to support hierarchy irqdomain, so hierarchy irqdomain related data could be saved in struct irq_data. With support of hierarchy irq_data, we could also support stacked irq_chips. This is most useful in case of set_affinity(). The new hierarchy irqdomain introduces following interfaces: 1) irq_domain_alloc_irqs()/irq_domain_free_irqs(): allocate/release IRQ and related resources. 2) __irq_domain_alloc_irqs(): a special version to support legacy IRQs. 3) irq_domain_activate_irq()/irq_domain_deactivate_irq(): program interrupt controllers to activate/deactivate interrupt. There are also several help functions to ease irqdomain implemenations: 1) irq_domain_get_irq_data(): get irq_data associated with a specific irqdomain. 2) irq_domain_set_hwirq_and_chip(): save irqdomain specific data into irq_data. 3) irq_domain_alloc_irqs_parent()/irq_domain_free_irqs_parent(): invoke parent irqdomain's alloc/free callbacks. We also changed irq_startup()/irq_shutdown() to invoke irq_domain_activate_irq()/irq_domain_deactivate_irq() to program interrupt controller when start/stop interrupts. [ tglx: Folded parts of the later patch series in ] Signed-off-by:
Jiang Liu <jiang.liu@linux.intel.com> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Grant Likely <grant.likely@linaro.org> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Yingjoe Chen <yingjoe.chen@mediatek.com> Cc: Yijing Wang <wangyijing@huawei.com> Signed-off-by:
Thomas Gleixner <tglx@linutronix.de>
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Jiang Liu authored
Introduce helpers to hide struct msi_desc implementation details, so we could easily support non-PCI-compliant MSI devices later by moving msi_list into struct device. Signed-off-by:
Jiang Liu <jiang.liu@linux.intel.com> Cc: Tony Luck <tony.luck@intel.com> Cc: linux-arm-kernel@lists.infradead.org Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Grant Likely <grant.likely@linaro.org> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Yijing Wang <wangyijing@huawei.com> Cc: Yingjoe Chen <yingjoe.chen@mediatek.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Matthias Brugger <matthias.bgg@gmail.com> Cc: Alexander Gordeev <agordeev@redhat.com> Link: http://lkml.kernel.org/r/1416061447-9472-6-git-send-email-jiang.liu@linux.intel.comSigned-off-by:
Thomas Gleixner <tglx@linutronix.de>
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Thomas Gleixner authored
The PCI/MSI irq chip callbacks mask/unmask_msi_irq have been renamed to pci_msi_mask/unmask_irq to mark them PCI specific. Rename all usage sites. The conversion helper functions are kept around to avoid conflicts in next and will be removed after merging into mainline. Coccinelle assisted conversion. No functional change. Signed-off-by:
Thomas Gleixner <tglx@linutronix.de> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Chris Metcalf <cmetcalf@tilera.com> Cc: x86@kernel.org Cc: Jiang Liu <jiang.liu@linux.intel.com> Cc: Jason Cooper <jason@lakedaemon.net> Cc: Murali Karicheri <m-karicheri2@ti.com> Cc: Thierry Reding <thierry.reding@gmail.com> Cc: Mohit Kumar <mohit.kumar@st.com> Cc: Simon Horman <horms@verge.net.au> Cc: Michal Simek <michal.simek@xilinx.com> Cc: Yijing Wang <wangyijing@huawei.com>
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Thomas Gleixner authored
mask/unmask_msi_irq and __mask_msi/msix_irq are PCI/MSI specific functions and should be named accordingly. This is a preparatory patch to support MSI on non PCI devices. Rename mask/unmask_msi_irq to pci_msi_mask/unmask_irq and document the functions. Provide conversion helpers. Rename __mask_msi/msix_irq to __pci_msi/msix_desc_mask so its clear that they operated on msi_desc. Fixup the only user outside of pci/msi. Signed-off-by:
Thomas Gleixner <tglx@linutronix.de> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Jiang Liu <jiang.liu@linux.intel.com> Cc: Grant Likely <grant.likely@linaro.org> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Yijing Wang <wangyijing@huawei.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
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Jiang Liu authored
Rename write_msi_msg() to pci_write_msi_msg() to mark it as PCI specific. Signed-off-by:
Jiang Liu <jiang.liu@linux.intel.com> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Grant Likely <grant.likely@linaro.org> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Yingjoe Chen <yingjoe.chen@mediatek.com> Cc: Yijing Wang <wangyijing@huawei.com> Signed-off-by:
Thomas Gleixner <tglx@linutronix.de>
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Jiang Liu authored
Rename __read_msi_msg() to __pci_read_msi_msg() and kill unused read_msi_msg(). It's a preparation to separate generic MSI code from PCI core. Signed-off-by:
Jiang Liu <jiang.liu@linux.intel.com> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Grant Likely <grant.likely@linaro.org> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Yingjoe Chen <yingjoe.chen@mediatek.com> Cc: Yijing Wang <wangyijing@huawei.com> Signed-off-by:
Thomas Gleixner <tglx@linutronix.de>
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Jiang Liu authored
It is the repsonsibility of arch_setup_msi_irq()/arch_setup_msi_irqs() to call irq_set_msi_desc() to associate IRQ descriptors and MSI descriptors. Kill the redundant call of irq_set_msi_desc() for MSI-X interrupts in the PCI MSI core. Signed-off-by:
Jiang Liu <jiang.liu@linux.intel.com> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Grant Likely <grant.likely@linaro.org> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Yingjoe Chen <yingjoe.chen@mediatek.com> Cc: Yijing Wang <wangyijing@huawei.com> Signed-off-by:
Thomas Gleixner <tglx@linutronix.de>
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Jiang Liu authored
Simplify PCI MSI code by initializing msi_desc.nvec_used and msi_desc.msi_attrib.multiple when creating MSI descriptors. Also remove redundant checks in IRQ remapping drivers, PCI MSI core already guarantees these. Signed-off-by:
Jiang Liu <jiang.liu@linux.intel.com> Acked-by:
Bjorn Helgaas <bhelgaas@google.com> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Grant Likely <grant.likely@linaro.org> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Yingjoe Chen <yingjoe.chen@mediatek.com> Cc: Yijing Wang <wangyijing@huawei.com> Signed-off-by:
Thomas Gleixner <tglx@linutronix.de>
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Jiang Liu authored
Per Documentation/CodingStyle, don't use braces around single statements. Signed-off-by:
Jiang Liu <jiang.liu@linux.intel.com> Acked-by:
Bjorn Helgaas <bhelgaas@google.com> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Grant Likely <grant.likely@linaro.org> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Yingjoe Chen <yingjoe.chen@mediatek.com> Cc: Yijing Wang <wangyijing@huawei.com> Signed-off-by:
Thomas Gleixner <tglx@linutronix.de>
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- 21 Nov, 2014 7 commits
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Yijing Wang authored
There are no users of the struct hw_pci.add_bus() or .remove_bus() methods, so remove the pointers from hw_pci. That makes pcibios_add_bus() and pcibios_remove_bus() themselves superfluous, so remove them as well. [bhelgaas: changelog] Signed-off-by:
Yijing Wang <wangyijing@huawei.com> Signed-off-by:
Bjorn Helgaas <bhelgaas@google.com>
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Yijing Wang authored
Save MSI controller in pci_sys_data instead of assigning MSI controller pointer to every PCI bus in .add_bus(). [bhelgaas: use xilinx_pcie_msi_chip, not xilinx_pcie_msi_controller] Signed-off-by:
Yijing Wang <wangyijing@huawei.com> Signed-off-by:
Bjorn Helgaas <bhelgaas@google.com>
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Yijing Wang authored
Save MSI controller in pci_sys_data instead of assigning MSI controller pointer to every PCI bus in .add_bus(). Signed-off-by:
Yijing Wang <wangyijing@huawei.com> Signed-off-by:
Bjorn Helgaas <bhelgaas@google.com>
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Yijing Wang authored
Save MSI controller in pci_sys_data instead of assigning MSI controller pointer to every PCI bus in .add_bus(). [bhelgaas: use struct rcar_msi.chip, not ctrl] Signed-off-by:
Yijing Wang <wangyijing@huawei.com> Signed-off-by:
Bjorn Helgaas <bhelgaas@google.com>
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Yijing Wang authored
Save MSI controller in pci_sys_data instead of assigning MSI controller pointer to every PCI bus in .add_bus(). [bhelgaas: use dw_pcie_msi_chip, not dw_pcie_msi_controller] Signed-off-by:
Yijing Wang <wangyijing@huawei.com> Signed-off-by:
Bjorn Helgaas <bhelgaas@google.com>
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Yijing Wang authored
Save MSI controller in pci_sys_data instead of assigning MSI controller pointer to every PCI bus in .add_bus(). [bhelgaas: use struct tegra_msi.chip, not ctrl] Signed-off-by:
Yijing Wang <wangyijing@huawei.com> Signed-off-by:
Bjorn Helgaas <bhelgaas@google.com>
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Yijing Wang authored
Currently ARM associates an MSI controller with a PCI bus by defining pcibios_add_bus() and using it to call a struct hw_pci.add_bus() method. That method sets the struct pci_bus "msi" member. That's unwieldy and unnecessarily couples MSI with the PCI enumeration code. On ARM, all devices under the same PCI host bridge share an MSI controller, so add an msi_controller pointer to the struct pci_sys_data and implement pcibios_msi_controller() to retrieve it. This is a step toward moving the msi_controller pointer into the generic struct pci_host_bridge. [bhelgaas: changelog, take pci_dev instead of pci_bus] Signed-off-by:
Yijing Wang <wangyijing@huawei.com> Signed-off-by:
Bjorn Helgaas <bhelgaas@google.com>
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- 12 Nov, 2014 2 commits
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Yijing Wang authored
Add pcibios_msi_controller() to get the msi_controller associated with a PCI device. This is to allow arches to store the msi_controller in the arch-specific PCI sysdata. [bhelgaas: changelog, take pci_dev instead of pci_bus] Suggested-by:
Bjorn Helgaas <bhelgaas@google.com> Signed-off-by:
Yijing Wang <wangyijing@huawei.com> Signed-off-by:
Bjorn Helgaas <bhelgaas@google.com>
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Yijing Wang authored
"msi_chip" isn't very descriptive, so rename it to "msi_controller". That tells a little more about what it does and is already used in device tree bindings. No functional change. [bhelgaas: changelog, change *only* the struct name so it's reviewable] Suggested-by:
Bjorn Helgaas <bhelgaas@google.com> Signed-off-by:
Yijing Wang <wangyijing@huawei.com> Signed-off-by:
Bjorn Helgaas <bhelgaas@google.com>
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- 11 Nov, 2014 2 commits
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Yijing Wang authored
Now only s390/MSI use default_msi_mask_irq() and default_msix_mask_irq(), replace them with the common MSI mask IRQ functions __msi_mask_irq() and __msix_mask_irq(). Remove default_msi_mask_irq() and default_msix_mask_irq(). Signed-off-by:
Yijing Wang <wangyijing@huawei.com> Signed-off-by:
Bjorn Helgaas <bhelgaas@google.com> Acked-by:
Sebastian Ott <sebott@linux.vnet.ibm.com> CC: linux-s390@vger.kernel.org
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Yijing Wang authored
The problem fixed by 0e4ccb15 ("PCI: Add x86_msi.msi_mask_irq() and msix_mask_irq()") has been fixed in a simpler way by a previous commit ("PCI/MSI: Add pci_msi_ignore_mask to prevent writes to MSI/MSI-X Mask Bits"). The msi_mask_irq() and msix_mask_irq() x86_msi_ops added by 0e4ccb15 are no longer needed, so revert the commit. default_msi_mask_irq() and default_msix_mask_irq() were added by 0e4ccb15 and are still used by s390, so keep them for now. [bhelgaas: changelog] Signed-off-by:
Yijing Wang <wangyijing@huawei.com> Signed-off-by:
Bjorn Helgaas <bhelgaas@google.com> Acked-by:
David Vrabel <david.vrabel@citrix.com> CC: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> CC: xen-devel@lists.xenproject.org
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