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2022-12-05genirq/msi: Remove unused alloc/free interfacesThomas Gleixner1-7/+0
Now that all users are converted remove the old interfaces. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Kevin Tian <kevin.tian@intel.com> Acked-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20221124230314.694291814@linutronix.de
2022-12-05genirq/msi: Provide new domain id allocation functionsThomas Gleixner1-8/+10
Provide two sorts of interfaces to handle the different use cases: - msi_domain_alloc_irqs_range(): Handles a caller defined precise range - msi_domain_alloc_irqs_all(): Allocates all interrupts associated to a domain by scanning the allocated MSI descriptors The latter is useful for the existing PCI/MSI support which does not have range information available. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Kevin Tian <kevin.tian@intel.com> Acked-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20221124230314.396497163@linutronix.de
2022-12-05genirq/msi: Provide new domain id based interfaces for freeing interruptsThomas Gleixner1-0/+9
Provide two sorts of interfaces to handle the different use cases: - msi_domain_free_irqs_range(): Handles a caller defined precise range - msi_domain_free_irqs_all(): Frees all interrupts associated to a domain The latter is useful for device teardown and to handle the legacy MSI support which does not have any range information available. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Kevin Tian <kevin.tian@intel.com> Acked-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20221124230314.337844751@linutronix.de
2022-12-05genirq/msi: Make descriptor freeing domain awareThomas Gleixner1-2/+17
Change the descriptor free functions to take a domain id to prepare for the upcoming multi MSI domain per device support. To avoid changing and extending the interfaces over and over use an core internal control struct and hand the pointer through the various functions. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Kevin Tian <kevin.tian@intel.com> Acked-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20221124230314.220788011@linutronix.de
2022-12-05genirq/msi: Make descriptor allocation device domain awareThomas Gleixner1-1/+15
Change the descriptor allocation and insertion functions to take a domain id to prepare for the upcoming multi MSI domain per device support. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Kevin Tian <kevin.tian@intel.com> Acked-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20221124230314.163043028@linutronix.de
2022-12-05genirq/msi: Rename msi_add_msi_desc() to msi_insert_msi_desc()Thomas Gleixner1-1/+1
This reflects the functionality better. No functional change. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Kevin Tian <kevin.tian@intel.com> Acked-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20221124230314.103554618@linutronix.de
2022-12-05genirq/msi: Make MSI descriptor iterators device domain awareThomas Gleixner1-6/+42
To support multiple MSI interrupt domains per device it is necessary to segment the xarray MSI descriptor storage. Each domain gets up to MSI_MAX_INDEX entries. Change the iterators so they operate with domain ids and take the domain offsets into account. The publicly available iterators which are mostly used in legacy implementations and the PCI/MSI core default to MSI_DEFAULT_DOMAIN (0) which is the id for the existing "global" domains. No functional change. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Kevin Tian <kevin.tian@intel.com> Acked-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20221124230313.985498981@linutronix.de
2022-12-05genirq/msi: Add pointers for per device irq domainsThomas Gleixner1-0/+3
With the upcoming per device MSI interrupt domain support it is necessary to store the domain pointers per device. Instead of delegating that storage to device drivers or subsystems add a domain pointer to the msi_dev_domain array in struct msi_device_data. This pointer is also used to take care of tearing down the irq domains when msi_device_data is cleaned up via devres. The interfaces into the MSI core will be changed from irqdomain pointer based interfaces to domain id based interfaces to support multiple MSI domains on a single device (e.g. PCI/MSI[-X] and PCI/IMS. Once the per device domain support is complete the irq domain pointer in struct device::msi.domain will not longer contain a pointer to the "global" MSI domain. It will contain a pointer to the MSI parent domain instead. It would be a horrible maze of conditionals to evaluate all over the place which domain pointer should be used, i.e. the "global" one in device::msi::domain or one from the internal pointer array. To avoid this evaluate in msi_setup_device_data() whether the irq domain which is associated to a device is a "global" or a parent MSI domain. If it is global then copy the pointer into the first entry of the msi_dev_domain array. This allows to convert interfaces and implementation to domain ids while keeping everything existing working. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Kevin Tian <kevin.tian@intel.com> Acked-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20221124230313.923860399@linutronix.de
2022-12-05genirq/msi: Move xarray into a separate struct and create an arrayThomas Gleixner1-2/+11
The upcoming support for multiple MSI domains per device requires storage for the MSI descriptors and in a second step storage for the irqdomain pointers. Move the xarray into a separate data structure msi_dev_domain and create an array with size 1 in msi_device_data, which can be expanded later when the support for per device domains is implemented. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Kevin Tian <kevin.tian@intel.com> Acked-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20221124230313.864887773@linutronix.de
2022-12-05genirq/msi: Create msi_api.hThomas Gleixner1-2/+4
Create a API header for MSI specific functions which are relevant to device drivers. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Kevin Tian <kevin.tian@intel.com> Acked-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20221124230313.632679220@linutronix.de
2022-12-05genirq/msi: Move IRQ_DOMAIN_MSI_NOMASK_QUIRK to MSI flagsThomas Gleixner1-0/+6
It's truly a MSI only flag and for the upcoming per device MSI domains this must be in the MSI flags so it can be set during domain setup without exposing this quirk outside of x86. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Kevin Tian <kevin.tian@intel.com> Acked-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20221124230313.454246167@linutronix.de
2022-11-17genirq/msi: Remove msi_domain_ops:: Msi_check()Thomas Gleixner1-4/+0
No more users. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Link: https://lore.kernel.org/r/20221111122015.807616900@linutronix.de
2022-11-17genirq: Get rid of GENERIC_MSI_IRQ_DOMAINThomas Gleixner1-5/+3
Adjust to reality and remove another layer of pointless Kconfig indirection. CONFIG_GENERIC_MSI_IRQ is good enough to serve all purposes. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Link: https://lore.kernel.org/r/20221111122014.524842979@linutronix.de
2022-11-17PCI/MSI: Get rid of PCI_MSI_IRQ_DOMAINThomas Gleixner1-18/+11
What a zoo: PCI_MSI select GENERIC_MSI_IRQ PCI_MSI_IRQ_DOMAIN def_bool y depends on PCI_MSI select GENERIC_MSI_IRQ_DOMAIN Ergo PCI_MSI enables PCI_MSI_IRQ_DOMAIN which in turn selects GENERIC_MSI_IRQ_DOMAIN. So all the dependencies on PCI_MSI_IRQ_DOMAIN are just an indirection to PCI_MSI. Match the reality and just admit that PCI_MSI requires GENERIC_MSI_IRQ_DOMAIN. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Acked-by: Bjorn Helgaas <bhelgaas@google.com> Link: https://lore.kernel.org/r/20221111122014.467556921@linutronix.de
2022-11-17genirq/msi: Add bus token to struct msi_domain_infoAhmed S. Darwish1-8/+11
Add a bus token member to struct msi_domain_info and let msi_create_irq_domain() set the bus token. That allows to remove the bus token updates at the call sites. Suggested-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ahmed S. Darwish <darwi@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Link: https://lore.kernel.org/r/20221111122014.294554462@linutronix.de
2022-11-17genirq/msi: Make __msi_domain_free_irqs() staticThomas Gleixner1-4/+0
Now that the last user is gone, confine it to the core code. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Ashok Raj <ashok.raj@intel.com> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Link: https://lore.kernel.org/r/20221111122014.179595843@linutronix.de
2022-11-17genirq/msi: Provide msi_domain_ops:: Post_free()Thomas Gleixner1-0/+4
To prepare for removing the exposure of __msi_domain_free_irqs() provide a post_free() callback in the MSI domain ops which can be used to solve the problem of the only user of __msi_domain_free_irqs() in arch/powerpc. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Ashok Raj <ashok.raj@intel.com> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Link: https://lore.kernel.org/r/20221111122014.063153448@linutronix.de
2022-11-17genirq/msi: Make __msi_domain_alloc_irqs() staticThomas Gleixner1-5/+2
Nothing outside of the core code requires this. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Ashok Raj <ashok.raj@intel.com> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Link: https://lore.kernel.org/r/20221111122014.004725919@linutronix.de
2022-11-17genirq/msi: Remove filter from msi_free_descs_free_range()Thomas Gleixner1-3/+2
When a range of descriptors is freed then all of them are not associated to a linux interrupt. Remove the filter and add a warning to the free function. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Ashok Raj <ashok.raj@intel.com> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Link: https://lore.kernel.org/r/20221111122013.888850936@linutronix.de
2021-12-16genirq/msi: Convert storage to xarrayThomas Gleixner1-7/+6
The current linked list storage for MSI descriptors is suboptimal in several ways: 1) Looking up a MSI desciptor requires a O(n) list walk in the worst case 2) The upcoming support of runtime expansion of MSI-X vectors would need to do a full list walk to figure out whether a particular index is already associated. 3) Runtime expansion of sparse allocations is even more complex as the current implementation assumes an ordered list (increasing MSI index). Use an xarray which solves all of the above problems nicely. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Michael Kelley <mikelley@microsoft.com> Tested-by: Nishanth Menon <nm@ti.com> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Link: https://lore.kernel.org/r/20211206210749.280627070@linutronix.de
2021-12-16genirq/msi: Simplify sysfs handlingThomas Gleixner1-11/+12
The sysfs handling for MSI is a convoluted maze and it is in the way of supporting dynamic expansion of the MSI-X vectors because it only supports a one off bulk population/free of the sysfs entries. Change it to do: 1) Creating an empty sysfs attribute group when msi_device_data is allocated 2) Populate the entries when the MSI descriptor is initialized 3) Free the entries when a MSI descriptor is detached from a Linux interrupt. 4) Provide functions for the legacy non-irqdomain fallback code to do a bulk population/free. This code won't support dynamic expansion. This makes the code simpler and reduces the number of allocations as the empty attribute group can be shared. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Michael Kelley <mikelley@microsoft.com> Tested-by: Nishanth Menon <nm@ti.com> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Link: https://lore.kernel.org/r/20211206210749.224917330@linutronix.de
2021-12-16genirq/msi: Add abuse prevention comment to msi headerThomas Gleixner1-0/+14
Hope dies last. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Link: https://lore.kernel.org/r/20211206210749.170847844@linutronix.de
2021-12-16genirq/msi: Mop up old interfacesThomas Gleixner1-15/+0
Get rid of the old iterators, alloc/free functions and adjust the core code accordingly. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Michael Kelley <mikelley@microsoft.com> Tested-by: Nishanth Menon <nm@ti.com> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Link: https://lore.kernel.org/r/20211206210749.117395027@linutronix.de
2021-12-16genirq/msi: Make interrupt allocation less convolutedThomas Gleixner1-6/+0
There is no real reason to do several loops over the MSI descriptors instead of just doing one loop. In case of an error everything is undone anyway so it does not matter whether it's a partial or a full rollback. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Michael Kelley <mikelley@microsoft.com> Tested-by: Nishanth Menon <nm@ti.com> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Link: https://lore.kernel.org/r/20211206210749.010234767@linutronix.de
2021-12-16genirq/msi: Provide domain flags to allocate/free MSI descriptors automaticallyThomas Gleixner1-0/+17
Provide domain info flags which tell the core to allocate simple descriptors or to free descriptors when the interrupts are freed and implement the required functionality. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Michael Kelley <mikelley@microsoft.com> Tested-by: Nishanth Menon <nm@ti.com> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Link: https://lore.kernel.org/r/20211206210747.928198636@linutronix.de
2021-12-16genirq/msi: Provide msi_alloc_msi_desc() and a simple allocatorThomas Gleixner1-0/+2
Provide msi_alloc_msi_desc() which takes a template MSI descriptor for initializing a newly allocated descriptor. This allows to simplify various usage sites of alloc_msi_entry() and moves the storage handling into the core code. For simple cases where only a linear vector space is required provide msi_add_simple_msi_descs() which just allocates a linear range of MSI descriptors and fills msi_desc::msi_index accordingly. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Michael Kelley <mikelley@microsoft.com> Tested-by: Nishanth Menon <nm@ti.com> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Link: https://lore.kernel.org/r/20211206210747.873833567@linutronix.de
2021-12-16genirq/msi: Provide a set of advanced MSI accessors and iteratorsThomas Gleixner1-0/+33
In preparation for dynamic handling of MSI-X interrupts provide a new set of MSI descriptor accessor functions and iterators. They are benefitial per se as they allow to cleanup quite some code in various MSI domain implementations. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Michael Kelley <mikelley@microsoft.com> Tested-by: Nishanth Menon <nm@ti.com> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Link: https://lore.kernel.org/r/20211206210747.818635078@linutronix.de
2021-12-16genirq/msi: Provide msi_domain_alloc/free_irqs_descs_locked()Thomas Gleixner1-0/+3
Usage sites which do allocations of the MSI descriptors before invoking msi_domain_alloc_irqs() require to lock the MSI decriptors accross the operation. Provide entry points which can be called with the MSI mutex held and lock the mutex in the existing entry points. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Michael Kelley <mikelley@microsoft.com> Tested-by: Nishanth Menon <nm@ti.com> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Link: https://lore.kernel.org/r/20211206210747.765371053@linutronix.de
2021-12-16genirq/msi: Add mutex for MSI list protectionThomas Gleixner1-0/+5
For upcoming runtime extensions of MSI-X interrupts it's required to protect the MSI descriptor list. Add a mutex to struct msi_device_data and provide lock/unlock functions. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Michael Kelley <mikelley@microsoft.com> Tested-by: Nishanth Menon <nm@ti.com> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Link: https://lore.kernel.org/r/20211206210747.708877269@linutronix.de
2021-12-16genirq/msi: Move descriptor list to struct msi_device_dataThomas Gleixner1-1/+3
It's only required when MSI is in use. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Michael Kelley <mikelley@microsoft.com> Tested-by: Nishanth Menon <nm@ti.com> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Link: https://lore.kernel.org/r/20211206210747.650487479@linutronix.de
2021-12-16genirq/msi: Provide interface to retrieve Linux interrupt numberThomas Gleixner1-0/+2
This allows drivers to retrieve the Linux interrupt number instead of fiddling with MSI descriptors. msi_get_virq() returns the Linux interrupt number or 0 in case that there is no entry for the given MSI index. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Michael Kelley <mikelley@microsoft.com> Tested-by: Nishanth Menon <nm@ti.com> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Link: https://lore.kernel.org/r/20211210221814.780824745@linutronix.de
2021-12-16PCI/MSI: Provide MSI_FLAG_MSIX_CONTIGUOUSThomas Gleixner1-0/+2
Provide a domain info flag which makes the core code check for a contiguous MSI-X index on allocation. That's simpler than checking it at some other domain callback in architecture code. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Acked-by: Bjorn Helgaas <bhelgaas@google.com> Link: https://lore.kernel.org/r/20211210221814.662401116@linutronix.de
2021-12-16PCI/MSI: Use msi_desc::msi_indexThomas Gleixner1-2/+0
The usage of msi_desc::pci::entry_nr is confusing at best. It's the index into the MSI[X] descriptor table. Use msi_desc::msi_index which is shared between all MSI incarnations instead of having a PCI specific storage for no value. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Michael Kelley <mikelley@microsoft.com> Tested-by: Nishanth Menon <nm@ti.com> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Acked-by: Bjorn Helgaas <bhelgaas@google.com> Link: https://lore.kernel.org/r/20211210221814.602911509@linutronix.de
2021-12-16soc: ti: ti_sci_inta_msi: Use msi_desc::msi_indexThomas Gleixner1-14/+2
Use the common msi_index member and get rid of the pointless wrapper struct. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Nishanth Menon <nm@ti.com> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Acked-by: Nishanth Menon <nm@ti.com> Link: https://lore.kernel.org/r/20211210221814.540704224@linutronix.de
2021-12-16bus: fsl-mc-msi: Use msi_desc::msi_indexThomas Gleixner1-10/+0
Use the common msi_index member and get rid of the pointless wrapper struct. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Link: https://lore.kernel.org/r/20211210221814.477386185@linutronix.de
2021-12-16platform-msi: Use msi_desc::msi_indexThomas Gleixner1-10/+0
Use the common msi_index member and get rid of the pointless wrapper struct. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Nishanth Menon <nm@ti.com> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Link: https://lore.kernel.org/r/20211210221814.413638645@linutronix.de
2021-12-16genirq/msi: Consolidate MSI descriptor dataThomas Gleixner1-0/+2
All non PCI/MSI usage variants have data structures in struct msi_desc with only one member: xxx_index. PCI/MSI has a entry_nr member. Add a common msi_index member to struct msi_desc so all implementations can share it which allows further consolidation. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Michael Kelley <mikelley@microsoft.com> Tested-by: Nishanth Menon <nm@ti.com> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Link: https://lore.kernel.org/r/20211210221814.350967317@linutronix.de
2021-12-16platform-msi: Store platform private data pointer in msi_device_dataThomas Gleixner1-2/+2
Storing the platform private data in a MSI descriptor is sloppy at best. The data belongs to the device and not to the descriptor. Add a pointer to struct msi_device_data and store the pointer there. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Nishanth Menon <nm@ti.com> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Link: https://lore.kernel.org/r/20211210221814.287680528@linutronix.de
2021-12-16platform-msi: Rename functions and clarify commentsThomas Gleixner1-4/+4
It's hard to distinguish what platform_msi_domain_alloc() and platform_msi_domain_alloc_irqs() are about. Make the distinction more explicit and add comments which explain the use cases properly. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Nishanth Menon <nm@ti.com> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Link: https://lore.kernel.org/r/20211210221814.228706214@linutronix.de
2021-12-16genirq/msi: Remove the original sysfs interfacesThomas Gleixner1-15/+3
No more users. Refactor the core code accordingly and move the global interface under CONFIG_PCI_MSI_ARCH_FALLBACKS. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Michael Kelley <mikelley@microsoft.com> Tested-by: Nishanth Menon <nm@ti.com> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Link: https://lore.kernel.org/r/20211210221814.168362229@linutronix.de
2021-12-16genirq/msi: Provide msi_device_populate/destroy_sysfs()Thomas Gleixner1-0/+4
Add new allocation functions which can be activated by domain info flags. They store the groups pointer in struct msi_device_data. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Michael Kelley <mikelley@microsoft.com> Tested-by: Nishanth Menon <nm@ti.com> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Link: https://lore.kernel.org/r/20211210221813.988659194@linutronix.de
2021-12-16device: Add device:: Msi_data pointer and struct msi_device_dataThomas Gleixner1-0/+18
Create struct msi_device_data and add a pointer of that type to struct dev_msi_info, which is part of struct device. Provide an allocator function which can be invoked from the MSI interrupt allocation code pathes. Add a properties field to the data structure as a first member so the allocation size is not zero bytes. The field will be uses later on. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Michael Kelley <mikelley@microsoft.com> Tested-by: Nishanth Menon <nm@ti.com> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Link: https://lore.kernel.org/r/20211210221813.676660809@linutronix.de
2021-12-09genirq/msi: Handle PCI/MSI allocation fail in core codeThomas Gleixner1-4/+1
Get rid of yet another irqdomain callback and let the core code return the already available information of how many descriptors could be allocated. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Juergen Gross <jgross@suse.com> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Bjorn Helgaas <bhelgaas@google.com> # PCI Link: https://lore.kernel.org/r/20211206210225.046615302@linutronix.de
2021-12-09PCI/MSI: Make pci_msi_domain_check_cap() staticThomas Gleixner1-2/+0
No users outside of that file. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Juergen Gross <jgross@suse.com> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Bjorn Helgaas <bhelgaas@google.com> Link: https://lore.kernel.org/r/20211206210224.980989243@linutronix.de
2021-12-09PCI/MSI: Split out irqdomain codeThomas Gleixner1-11/+0
Move the irqdomain specific code into its own file. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Juergen Gross <jgross@suse.com> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Bjorn Helgaas <bhelgaas@google.com> Link: https://lore.kernel.org/r/20211206210224.817754783@linutronix.de
2021-12-09PCI/MSI: Make arch_restore_msi_irqs() less horrible.Thomas Gleixner1-4/+3
Make arch_restore_msi_irqs() return a boolean which indicates whether the core code should restore the MSI message or not. Get rid of the indirection in x86. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Juergen Gross <jgross@suse.com> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Acked-by: Bjorn Helgaas <bhelgaas@google.com> # PCI Link: https://lore.kernel.org/r/20211206210224.485668098@linutronix.de
2021-12-09genirq/msi, treewide: Use a named struct for PCI/MSI attributesThomas Gleixner1-43/+41
The unnamed struct sucks and is in the way of further cleanups. Stick the PCI related MSI data into a real data structure and cleanup all users. No functional change. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Juergen Gross <jgross@suse.com> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Kalle Valo <kvalo@codeaurora.org> Link: https://lore.kernel.org/r/20211206210224.374863119@linutronix.de
2021-12-09PCI/MSI: Remove msi_desc_to_pci_sysdata()Thomas Gleixner1-5/+0
Last user is gone long ago. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Juergen Gross <jgross@suse.com> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Acked-by: Bjorn Helgaas <bhelgaas@google.com> Link: https://lore.kernel.org/r/20211206210224.210768199@linutronix.de
2021-12-09PCI/MSI: Make pci_msi_domain_write_msg() staticThomas Gleixner1-1/+0
There is no point to have this function public as it is set by the PCI core anyway when a PCI/MSI irqdomain is created. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Juergen Gross <jgross@suse.com> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Acked-by: Bjorn Helgaas <bhelgaas@google.com> # PCI Link: https://lore.kernel.org/r/20211206210224.157070464@linutronix.de
2021-12-09genirq/msi: Fixup includesThomas Gleixner1-1/+1
Remove the kobject.h include from msi.h as it's not required and add a sysfs.h include to the core code instead. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Juergen Gross <jgross@suse.com> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20211206210224.103502021@linutronix.de
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