- 09 11月, 2016 2 次提交
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由 Christoph Hellwig 提交于
Only calculate the affinity for the main I/O vectors, and skip the pre or post vectors specified by struct irq_affinity. Also remove the irq_affinity cpumask argument that has never been used. If we ever need it in the future we can pass it through struct irq_affinity. Signed-off-by: NChristoph Hellwig <hch@lst.de> Reviewed-by: NHannes Reinecke <hare@suse.com> Acked-by: NBjorn Helgaas <bhelgaas@google.com> Acked-by: NJens Axboe <axboe@kernel.dk> Cc: linux-block@vger.kernel.org Cc: linux-pci@vger.kernel.org Link: http://lkml.kernel.org/r/1478654107-7384-4-git-send-email-hch@lst.deSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
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由 Christoph Hellwig 提交于
Only calculate the affinity for the main I/O vectors, and skip the pre or post vectors specified by struct irq_affinity. Also remove the irq_affinity cpumask argument that has never been used. If we ever need it in the future we can pass it through struct irq_affinity. Signed-off-by: NChristoph Hellwig <hch@lst.de> Reviewed-by: NHannes Reinecke <hare@suse.com> Acked-by: NJens Axboe <axboe@kernel.dk> Cc: linux-block@vger.kernel.org Cc: linux-pci@vger.kernel.org Link: http://lkml.kernel.org/r/1478654107-7384-3-git-send-email-hch@lst.deSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
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- 26 10月, 2016 1 次提交
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由 Stephen Hemminger 提交于
commit 92ca8d20dee2 ("genirq/msi: Switch to new irq spreading") introduced new parameter to msi_init_setup and but did not update docbook comments. Fixes 'make htmldocs' warning. Signed-off-by: NStephen Hemminger <sthemmin@microsoft.com> Cc: bhelgaas@google.com Cc: linux-pci@vger.kernel.org Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
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- 15 9月, 2016 3 次提交
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由 Thomas Gleixner 提交于
Add a helper to get the affinity mask for a given PCI irq vector. For MSI or MSI-X vectors these are stored by the IRQ core, while for legacy interrupts we will always return cpu_possible_map. [hch: updated to follow the style of pci_irq_vector()] Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Signed-off-by: NChristoph Hellwig <hch@lst.de> Cc: axboe@fb.com Cc: keith.busch@intel.com Cc: agordeev@redhat.com Cc: linux-block@vger.kernel.org Link: http://lkml.kernel.org/r/1473862739-15032-6-git-send-email-hch@lst.deSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
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由 Thomas Gleixner 提交于
Switch MSI over to the new spreading code. If a pci device contains a valid pointer to a cpumask, then this mask is used for spreading otherwise the online cpu mask is used. This allows a driver to restrict the spread to a subset of CPUs, e.g. cpus on a particular node. Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Cc: Christoph Hellwig <hch@lst.de> Cc: axboe@fb.com Cc: keith.busch@intel.com Cc: agordeev@redhat.com Cc: linux-block@vger.kernel.org Link: http://lkml.kernel.org/r/1473862739-15032-4-git-send-email-hch@lst.deSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
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由 Thomas Gleixner 提交于
For irq spreading want to store affinity masks in the msi_entry. Add the infrastructure for it. We allocate an array of cpumasks with an array size of the number of used vectors in the entry, so we can hand in the information per linux interrupt later. As we hand in the number of used vectors, we assign them right away. Convert all the call sites. Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Cc: axboe@fb.com Cc: keith.busch@intel.com Cc: agordeev@redhat.com Cc: linux-block@vger.kernel.org Cc: Christoph Hellwig <hch@lst.de> Link: http://lkml.kernel.org/r/1473862739-15032-2-git-send-email-hch@lst.de
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- 13 9月, 2016 1 次提交
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由 Tomasz Nowicki 提交于
It is possible to provide information about which MSI controller to use on a per-device basis for DT. This patch supply this with ACPI support. Currently, IORT is the only one ACPI table which can provide such mapping. In order to plug IORT into MSI infrastructure we are adding ACPI equivalents for finding PCI device domain and its RID translation (pci_msi_domain_get_msi_rid and pci_msi_domain_get_msi_rid calls). Signed-off-by: NTomasz Nowicki <tn@semihalf.com> Reviewed-by: NHanjun Guo <hanjun.guo@linaro.org> Acked-by: NMarc Zyngier <marc.zyngier@arm.com> Acked-by: NBjorn Helgaas <bhelgaas@google.com> Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com>
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- 18 8月, 2016 1 次提交
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由 Christoph Hellwig 提交于
ahci currently insists on an explicit call to pci_intx() before falling back from MSI or MSI-X to legacy IRQs. As pci_intx() is a no-op if the command register already contains the right value it seems safe and useful to add this call to pci_alloc_irq_vectors() so that ahci can just use pci_alloc_irq_vectors(). Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>
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- 17 8月, 2016 1 次提交
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由 Christoph Hellwig 提交于
Instead of passing negative flags like PCI_IRQ_NOMSI to prevent use of certain interrupt types, pass positive flags like PCI_IRQ_LEGACY, PCI_IRQ_MSI, etc., to specify the acceptable interrupt types. This is based on a number of pending driver conversions that just happend to be a whole more obvious to read this way, and given that we have no users in the tree yet it can still easily be done. I've also added a PCI_IRQ_ALL_TYPES catchall to keep the case of accepting all interrupt types very simple. [bhelgaas: changelog, fix PCI_IRQ_AFFINITY doc typo, remove mention of PCI_IRQ_NOLEGACY] Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NBjorn Helgaas <bhelgaas@google.com> Reviewed-by: NAlexander Gordeev <agordeev@redhat.com>
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- 09 8月, 2016 1 次提交
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由 Marc Zyngier 提交于
Bharat Kumar Gogada reported issues with the generic MSI code, where the end-point ended up with garbage in its MSI configuration (both for the vector and the message). It turns out that the two MSI paths in the kernel are doing slightly different things: generic MSI: disable MSI -> allocate MSI -> enable MSI -> setup EP PCI MSI: disable MSI -> allocate MSI -> setup EP -> enable MSI And it turns out that end-points are allowed to latch the content of the MSI configuration registers as soon as MSIs are enabled. In Bharat's case, the end-point ends up using whatever was there already, which is not what you want. In order to make things converge, we introduce a new MSI domain flag (MSI_FLAG_ACTIVATE_EARLY) that is unconditionally set for PCI/MSI. When set, this flag forces the programming of the end-point as soon as the MSIs are allocated. A consequence of this is that we have an extra activate in irq_startup, but that should be without much consequence. tglx: - Several people reported a VMWare regression with PCI/MSI-X passthrough. It turns out that the patch also cures that issue. - We need to have a look at the MSI disable interrupt path, where we write the msg to all zeros without disabling MSI in the PCI device. Is that correct? Fixes: 52f518a3 "x86/MSI: Use hierarchical irqdomains to manage MSI interrupts" Reported-and-tested-by: NBharat Kumar Gogada <bharat.kumar.gogada@xilinx.com> Reported-and-tested-by: NFoster Snowhill <forst@forstwoof.ru> Reported-by: NMatthias Prager <linux@matthiasprager.de> Reported-by: NJason Taylor <jason.taylor@simplivity.com> Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com> Acked-by: NBjorn Helgaas <bhelgaas@google.com> Cc: linux-pci@vger.kernel.org Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/1468426713-31431-1-git-send-email-marc.zyngier@arm.comSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
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- 22 7月, 2016 5 次提交
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由 Christoph Hellwig 提交于
Set the affinity_mask in the PCI device before allocating vectors so that the affinity can be propagated through the MSI descriptor structures to the core IRQ code. To facilitate this, new __pci_enable_msi_range() and __pci_enable_msix_range() helpers are factored out of their not prefixed variants which assigning the new IRQ affinity mask in the PCI device so that the low-level interrupt code can perform the interrupt affinity assignment and do node-local allocations. A new PCI_IRQ_NOAFFINITY flag is added to pci_alloc_irq_vectors() so that this function can also be used by drivers that don't wish to use the automatic affinity assignment. [bhelgaas: omit "else" after "return" consistently] Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NBjorn Helgaas <bhelgaas@google.com> Reviewed-by: NAlexander Gordeev <agordeev@redhat.com>
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由 Christoph Hellwig 提交于
Add a function to allocate and free a range of interrupt vectors, using MSI-X, MSI or legacy vectors (in that order) based on the capabilities of the underlying device and PCIe complex. Additionally a new helper is provided to get the Linux IRQ number for given device-relative vector so that the drivers don't need to allocate their own arrays to keep track of the vectors for the multi vector MSI-X case. Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NBjorn Helgaas <bhelgaas@google.com> Reviewed-by: NAlexander Gordeev <agordeev@redhat.com>
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由 Christoph Hellwig 提交于
The "entries" argument isn't needed if the list of entries does not contain any holes. Make it optional so that we can avoid the need to allocate a msix_entry structure for this (common) case. Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NBjorn Helgaas <bhelgaas@google.com> Reviewed-by: NAlexander Gordeev <agordeev@redhat.com>
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由 Christoph Hellwig 提交于
Instead of relying on the msix_entry structure for the vector number, read it from the msi_desc. Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NBjorn Helgaas <bhelgaas@google.com> Reviewed-by: NAlexander Gordeev <agordeev@redhat.com>
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由 Christoph Hellwig 提交于
Add a pci_msix_desc_addr() helper to factor out the calculation of the base address for a given MSI-X vector. Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NBjorn Helgaas <bhelgaas@google.com> Reviewed-by: NAlexander Gordeev <agordeev@redhat.com>
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- 20 12月, 2015 1 次提交
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由 Jake Oshins 提交于
The Linux kernel already has the concept of IRQ domain, wherein a component can expose a set of IRQs which are managed by a particular interrupt controller chip or other subsystem. The PCI driver exposes the notion of an IRQ domain for Message-Signaled Interrupts (MSI) from PCI Express devices. This patch exposes the functions which are necessary for creating a MSI IRQ domain within a module. [ tglx: Split it into x86 and core irq parts ] Signed-off-by: NJake Oshins <jakeo@microsoft.com> Cc: gregkh@linuxfoundation.org Cc: kys@microsoft.com Cc: devel@linuxdriverproject.org Cc: olaf@aepfle.de Cc: apw@canonical.com Cc: vkuznets@redhat.com Cc: haiyangz@microsoft.com Cc: marc.zyngier@arm.com Cc: bhelgaas@google.com Link: http://lkml.kernel.org/r/1449769983-12948-4-git-send-email-jakeo@microsoft.comSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
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- 05 12月, 2015 1 次提交
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由 Marc Zyngier 提交于
Since d8a1cb75 ("PCI/MSI: Let pci_msi_get_domain use struct device::msi_domain"), we use the MSI domain associated with the PCI device. But finding an MSI domain doesn't mean that the domain is implemented using the generic MSI domain API, and a number of MSI controllers are still using arch_setup_msi_irq() and arch_teardown_msi_irqs(). Check that the domain we just obtained is hierarchical. If it is, we can use the new generic MSI stuff. Otherwise we have to fall back to the old arch_setup_msi_irq() and arch_teardown_msi_irqs() interfaces. This avoids an oops in msi_domain_alloc_irqs() on systems with R-Car, Tegra, Armada 370, and probably other DesignWare-based host controllers. Fixes: d8a1cb75 ("PCI/MSI: Let pci_msi_get_domain use struct device::msi_domain") Reported-by: NPhil Edworthy <phil.edworthy@renesas.com> Tested-by: NPhil Edworthy <phil.edworthy@renesas.com> Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com> Signed-off-by: NBjorn Helgaas <bhelgaas@google.com> Acked-by: NThomas Gleixner <tglx@linutronix.de> CC: stable@vger.kernel.org # v4.3+
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- 01 12月, 2015 1 次提交
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由 Bjorn Helgaas 提交于
4a7cc831 ("genirq/MSI: Move msi_list from struct pci_dev to struct device") removed the contents of pci_msi_init_pci_dev(). All implementation of it are now empty, so remove it completely. Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>
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- 16 10月, 2015 4 次提交
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由 Marc Zyngier 提交于
So far, we've always considered that for a given PCI device, its MSI controller was either set by the architecture-specific pcibios hook, or simply inherited from the host bridge. This doesn't cover things like firmware-defined topologies like msi-map (DT) or IORT (ACPI), which can provide information about which MSI controller to use on a per-device basis. This patch adds the necessary hook into the MSI code to allow this feature, and provides the msi-map functionnality as a first implementation. Acked-by: NRob Herring <robh@kernel.org> Acked-by: NBjorn Helgaas <bhelgaas@google.com> Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com>
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由 David Daney 提交于
Add pci_msi_domain_get_msi_rid() to return the MSI requester id (RID). Initially needed by gic-v3 based systems. It will be used by follow on patch to drivers/irqchip/irq-gic-v3-its-pci-msi.c Initially supports mapping the RID via OF device tree. In the future, this could be extended to use ACPI _IORT tables as well. Reviewed-by: NMarc Zyngier <marc.zyngier@arm.com> Acked-by: NBjorn Helgaas <bhelgaas@google.com> Signed-off-by: NDavid Daney <david.daney@cavium.com> Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com>
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由 Marc Zyngier 提交于
When we create a generic MSI domain, that MSI_FLAG_USE_DEF_CHIP_OPS is set, and that any of .mask or .unmask are NULL in the irq_chip structure, we set them to pci_msi_[un]mask_irq. This is a bad idea for at least two reasons: - PCI_MSI might not be selected, kernel fails to build (yes, this is legitimate, at least on arm64!) - This may not be a PCI/MSI domain at all (platform MSI, for example) Either way, this looks wrong. Move the overriding of mask/unmask to the PCI counterpart, and panic is any of these two methods is not set in the core code (they really should be present). Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com> Cc: Jiang Liu <jiang.liu@linux.intel.com> Cc: Bjorn Helgaas <bhelgaas@google.com> Link: http://lkml.kernel.org/r/1444760085-27857-1-git-send-email-marc.zyngier@arm.comSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
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由 Romain Bezut 提交于
irqbalance uses sysfs attributes to populate its internal database, which is then used to bind the IRQ to the appropriate NUMA node. On a device accepting multiple MSIs and with interrupt remapping enabled, only the first IRQ entry is exported in the "msi_irqs" directory. This results in irqbalance having no clue of the NUMA affinity for the extra IRQs, so it can't bind them to the correct node. Export all MSI interrupts as sysfs attributes when relevant. [bhelgaas: changelog] Signed-off-by: NRomain Bezut <rbezut@gmail.com> Signed-off-by: NBjorn Helgaas <bhelgaas@google.com> Acked-by: NThomas Gleixner <tglx@linutronix.de>
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- 14 10月, 2015 1 次提交
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由 Marc Zyngier 提交于
As we continue to push of_node towards the outskirts of irq domains, let's start tackling the case of msi_create_irq_domain and its little friends. This has limited impact in both PCI/MSI, platform MSI, and a few drivers. Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com> Tested-by: NHanjun Guo <hanjun.guo@linaro.org> Tested-by: NLorenzo Pieralisi <lorenzo.pieralisi@arm.com> Cc: <linux-arm-kernel@lists.infradead.org> Cc: Tomasz Nowicki <tomasz.nowicki@linaro.org> Cc: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com> Cc: Graeme Gregory <graeme@xora.org.uk> Cc: Jake Oshins <jakeo@microsoft.com> Cc: Jiang Liu <jiang.liu@linux.intel.com> Cc: Jason Cooper <jason@lakedaemon.net> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Link: http://lkml.kernel.org/r/1444737105-31573-17-git-send-email-marc.zyngier@arm.comSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
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- 19 9月, 2015 1 次提交
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由 Lucas Stach 提交于
Add a msi_controller setup_irqs() method so MSI chip providers can implement their own multivector MSI setup. [bhelgaas: changelog] Signed-off-by: NLucas Stach <l.stach@pengutronix.de> Signed-off-by: NBjorn Helgaas <bhelgaas@google.com> Reviewed-by: NPratyush Anand <pratyush.anand@gmail.com>
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- 21 8月, 2015 1 次提交
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由 Lorenzo Pieralisi 提交于
The pcibios_msi_controller() hook was only implemented by ARM, and it sets pci_bus->msi now, so it doesn't need this hook anymore. Remove the unused pcibios_msi_controller() hook. [bhelgaas: changelog, split into separate patch] Signed-off-by: NLorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>
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- 31 7月, 2015 1 次提交
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由 Jiang Liu 提交于
Once MSI/MSI-X is enabled by the device driver, a PCI device won't use legacy IRQs again until MSI/MSI-X is disabled. Call pcibios_free_irq() when enabling MSI/MSI-X and pcibios_alloc_irq() when disabling MSI/MSI-X. This allows arch code to manage resources associated with the legacy IRQ. [bhelgaas: changelog] Signed-off-by: NJiang Liu <jiang.liu@linux.intel.com> Signed-off-by: NBjorn Helgaas <bhelgaas@google.com> Acked-by: NThomas Gleixner <tglx@linutronix.de>
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- 30 7月, 2015 3 次提交
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由 Marc Zyngier 提交于
The only three users of that field are not using the msi_controller structure anymore, so drop it altogether. Acked-by: NBjorn Helgaas <bhelgaas@google.com> Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com> Cc: <linux-arm-kernel@lists.infradead.org> Cc: Yijing Wang <wangyijing@huawei.com> Cc: Ma Jun <majun258@huawei.com> Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Cc: Duc Dang <dhdang@apm.com> Cc: Hanjun Guo <hanjun.guo@linaro.org> Cc: Jiang Liu <jiang.liu@linux.intel.com> Cc: Jason Cooper <jason@lakedaemon.net> Link: http://lkml.kernel.org/r/1438091186-10244-20-git-send-email-marc.zyngier@arm.comSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
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由 Marc Zyngier 提交于
Now that we can easily find which MSI domain a PCI device is using, use dev_get_msi_domain as a way to retrieve the information. The original code is still used as a fallback. Acked-by: NBjorn Helgaas <bhelgaas@google.com> Reviewed-by: NHanjun Guo <hanjun.guo@linaro.org> Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com> Cc: <linux-arm-kernel@lists.infradead.org> Cc: Yijing Wang <wangyijing@huawei.com> Cc: Ma Jun <majun258@huawei.com> Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Cc: Duc Dang <dhdang@apm.com> Cc: Jiang Liu <jiang.liu@linux.intel.com> Cc: Jason Cooper <jason@lakedaemon.net> Link: http://lkml.kernel.org/r/1438091186-10244-8-git-send-email-marc.zyngier@arm.comSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
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由 Marc Zyngier 提交于
When creating a PCI/MSI domain, tag it with DOMAIN_BUS_PCI_MSI so that it can be looked-up using irq_find_matching_host(). Acked-by: NBjorn Helgaas <bhelgaas@google.com> Reviewed-by: NHanjun Guo <hanjun.guo@linaro.org> Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com> Cc: <linux-arm-kernel@lists.infradead.org> Cc: Yijing Wang <wangyijing@huawei.com> Cc: Ma Jun <majun258@huawei.com> Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Cc: Duc Dang <dhdang@apm.com> Cc: Jiang Liu <jiang.liu@linux.intel.com> Cc: Jason Cooper <jason@lakedaemon.net> Link: http://lkml.kernel.org/r/1438091186-10244-3-git-send-email-marc.zyngier@arm.comSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
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- 23 7月, 2015 6 次提交
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由 Jiang Liu 提交于
Move alloc_msi_entry() from PCI MSI code into generic MSI code, so it can be reused by other generic MSI drivers. Also introduce free_msi_entry() for completeness. Suggested-by: Stuart Yoder <stuart.yoder@freescale.com>. Signed-off-by: NJiang Liu <jiang.liu@linux.intel.com> Reviewed-by: NMarc Zyngier <marc.zyngier@arm.com> Reviewed-by: NYijing Wang <wangyijing@huawei.com> Acked-by: NBjorn Helgaas <bhelgaas@google.com> Cc: Tony Luck <tony.luck@intel.com> Cc: linux-arm-kernel@lists.infradead.org Cc: Grant Likely <grant.likely@linaro.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Alexander Gordeev <agordeev@redhat.com> Link: http://lkml.kernel.org/r/1436428847-8886-13-git-send-email-jiang.liu@linux.intel.comSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
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由 Jiang Liu 提交于
Store 'struct device *' instead of 'struct pci_dev *' in struct msi_desc, so struct msi_desc can be reused by non PCI based MSI drivers. Signed-off-by: NJiang Liu <jiang.liu@linux.intel.com> Reviewed-by: NYijing Wang <wangyijing@huawei.com> Reviewed-by: NMarc Zyngier <marc.zyngier@arm.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: Stuart Yoder <stuart.yoder@freescale.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Alexander Gordeev <agordeev@redhat.com> Link: http://lkml.kernel.org/r/1436428847-8886-11-git-send-email-jiang.liu@linux.intel.comSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
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由 Jiang Liu 提交于
Move msi_list from struct pci_dev into struct device, so we can support non-PCI-device based generic MSI interrupts. msi_list is now conditional under CONFIG_GENERIC_MSI_IRQ, which is selected from CONFIG_PCI_MSI, so no functional change for PCI MSI users. Signed-off-by: NJiang Liu <jiang.liu@linux.intel.com> Reviewed-by: NYijing Wang <wangyijing@huawei.com> Acked-by: NBjorn Helgaas <bhelgaas@google.com> Cc: Tony Luck <tony.luck@intel.com> Cc: linux-arm-kernel@lists.infradead.org Cc: Grant Likely <grant.likely@linaro.org> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Stuart Yoder <stuart.yoder@freescale.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Joe Perches <joe@perches.com> Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: Luis R. Rodriguez <mcgrof@suse.com> Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Cc: Joerg Roedel <jroedel@suse.de> Cc: Alexander Gordeev <agordeev@redhat.com> Link: http://lkml.kernel.org/r/1436428847-8886-10-git-send-email-jiang.liu@linux.intel.comSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
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由 Jiang Liu 提交于
Use helper functions to access fields in struct msi_desc, so we could easily refine msi_desc later. Signed-off-by: NJiang Liu <jiang.liu@linux.intel.com> Reviewed-by: NYijing Wang <wangyijing@huawei.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: Stuart Yoder <stuart.yoder@freescale.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Murali Karicheri <m-karicheri2@ti.com> Cc: Jingoo Han <jingoohan1@gmail.com> Cc: Pratyush Anand <pratyush.anand@gmail.com> Cc: Michal Simek <michal.simek@xilinx.com> Cc: Soeren Brinkmann <soren.brinkmann@xilinx.com> Cc: Srikanth Thokala <sthokal@xilinx.com> Cc: Rob Herring <robh@kernel.org> Link: http://lkml.kernel.org/r/1436428847-8886-9-git-send-email-jiang.liu@linux.intel.comSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
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由 Jiang Liu 提交于
Use accessor for_each_pci_msi_entry() to access MSI device list, so we could easily move msi_list from struct pci_dev into struct device later. Signed-off-by: NJiang Liu <jiang.liu@linux.intel.com> Reviewed-by: NYijing Wang <wangyijing@huawei.com> Acked-by: NBjorn Helgaas <bhelgaas@google.com> Acked-by: NKonrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Tony Luck <tony.luck@intel.com> Cc: linux-arm-kernel@lists.infradead.org Cc: xen-devel@lists.xenproject.org Cc: Grant Likely <grant.likely@linaro.org> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Stuart Yoder <stuart.yoder@freescale.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: David Vrabel <david.vrabel@citrix.com> Link: http://lkml.kernel.org/r/1436428847-8886-7-git-send-email-jiang.liu@linux.intel.comSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
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由 Jiang Liu 提交于
Add helper function msi_desc_to_pci_sysdata() to retrieve sysdata from an MSI descriptor. To avoid pulling include/linux/pci.h into include/linux/msi.h, msi_desc_to_pci_sysdata() is implemented as a normal function instead of an inline function. Signed-off-by: NJiang Liu <jiang.liu@linux.intel.com> Reviewed-by: NYijing Wang <wangyijing@huawei.com> Acked-by: NBjorn Helgaas <bhelgaas@google.com> Cc: Tony Luck <tony.luck@intel.com> Cc: linux-arm-kernel@lists.infradead.org Cc: Grant Likely <grant.likely@linaro.org> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Stuart Yoder <stuart.yoder@freescale.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Alexander Gordeev <agordeev@redhat.com> Link: http://lkml.kernel.org/r/1436428847-8886-2-git-send-email-jiang.liu@linux.intel.comSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
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- 17 7月, 2015 2 次提交
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由 Jiang Liu 提交于
Use irq_data access helper to access irq_data->msi_desc, so we can move msi_desc from struct irq_data into struct irq_common_data later. Signed-off-by: NJiang Liu <jiang.liu@linux.intel.com> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Chris Metcalf <cmetcalf@ezchip.com> Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
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由 Jiang Liu 提交于
Rename irq_data_get_msi() as irq_data_get_msi_desc() to keep consistency with other irq_data access helpers. Signed-off-by: NJiang Liu <jiang.liu@linux.intel.com> Acked-by: NBjorn Helgaas <bhelgaas@google.com> Cc: Jason Cooper <jason@lakedaemon.net> Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
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- 07 5月, 2015 3 次提交
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由 Michael S. Tsirkin 提交于
If we enable MSI, then kexec a new kernel, the new kernel may receive MSIs it is not prepared for. Commit d5dea7d9 ("PCI: msi: Disable msi interrupts when we initialize a pci device") prevents this, but only if the new kernel is built with CONFIG_PCI_MSI=y. Move the "disable MSI" functionality from drivers/pci/msi.c to a new pci_msi_setup_pci_dev() in drivers/pci/probe.c so we can disable MSIs when we enumerate devices even if the kernel doesn't include full MSI support. [bhelgaas: changelog, disable MSIs in pci_setup_device(), put pci_msi_setup_pci_dev() at its final destination] Signed-off-by: NMichael S. Tsirkin <mst@redhat.com> Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>
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由 Michael S. Tsirkin 提交于
Move pci_msi_set_enable() and pci_msix_clear_and_set_ctrl() to drivers/pci/pci.h so they're available even when MSI isn't configured into the kernel. No functional change. [bhelgaas: changelog, split into separate patch] Signed-off-by: NMichael S. Tsirkin <mst@redhat.com> Signed-off-by: NBjorn Helgaas <bhelgaas@google.com> Reviewed-by: NFam Zheng <famz@redhat.com>
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由 Michael S. Tsirkin 提交于
Rename msi_set_enable() to pci_msi_set_enable() and msix_clear_and_set_ctrl() to pci_msix_clear_and_set_ctrl(). No functional change. [bhelgaas: changelog, split into separate patch] Signed-off-by: NMichael S. Tsirkin <mst@redhat.com> Signed-off-by: NBjorn Helgaas <bhelgaas@google.com> Reviewed-by: NFam Zheng <famz@redhat.com>
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