Messages in this thread Patch in this message | | Commit-ID: 667724c5a3109675cf3bfe7d75795b8608d1bcbe Gitweb: http://git.kernel.org/tip/667724c5a3109675cf3bfe7d75795b8608d1bcbe Author: Thomas Gleixner <tglx@linutronix.de> AuthorDate: Tue, 20 Jun 2017 01:37:10 +0200 Committer: Thomas Gleixner <tglx@linutronix.de> CommitDate: Thu, 22 Jun 2017 18:21:10 +0200
x86/msi: Provide new iommu irqdomain interface
Provide a new interface for creating the iommu remapping domains, so that the caller can supply a name and a id in order to create named irqdomains.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Jens Axboe <axboe@kernel.dk> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Joerg Roedel <joro@8bytes.org> Cc: Keith Busch <keith.busch@intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: iommu@lists.linux-foundation.org Cc: Christoph Hellwig <hch@lst.de> Link: http://lkml.kernel.org/r/20170619235443.986661206@linutronix.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
--- arch/x86/include/asm/irq_remapping.h | 2 ++ arch/x86/kernel/apic/msi.c | 15 +++++++++++++++ 2 files changed, 17 insertions(+)
diff --git a/arch/x86/include/asm/irq_remapping.h b/arch/x86/include/asm/irq_remapping.h index a210eba..0398675 100644 --- a/arch/x86/include/asm/irq_remapping.h +++ b/arch/x86/include/asm/irq_remapping.h @@ -56,6 +56,8 @@ irq_remapping_get_irq_domain(struct irq_alloc_info *info); /* Create PCI MSI/MSIx irqdomain, use @parent as the parent irqdomain. */ extern struct irq_domain *arch_create_msi_irq_domain(struct irq_domain *parent); +extern struct irq_domain * +arch_create_remap_msi_irq_domain(struct irq_domain *par, const char *n, int id); /* Get parent irqdomain for interrupt remapping irqdomain */ static inline struct irq_domain *arch_get_ir_parent_domain(void) diff --git a/arch/x86/kernel/apic/msi.c b/arch/x86/kernel/apic/msi.c index c61aec7..0e6618e 100644 --- a/arch/x86/kernel/apic/msi.c +++ b/arch/x86/kernel/apic/msi.c @@ -167,10 +167,25 @@ static struct msi_domain_info pci_msi_ir_domain_info = { .handler_name = "edge", }; +struct irq_domain *arch_create_remap_msi_irq_domain(struct irq_domain *parent, + const char *name, int id) +{ + struct fwnode_handle *fn; + struct irq_domain *d; + + fn = irq_domain_alloc_named_id_fwnode(name, id); + if (!fn) + return NULL; + d = pci_msi_create_irq_domain(fn, &pci_msi_ir_domain_info, parent); + irq_domain_free_fwnode(fn); + return d; +} + struct irq_domain *arch_create_msi_irq_domain(struct irq_domain *parent) { return pci_msi_create_irq_domain(NULL, &pci_msi_ir_domain_info, parent); } + #endif #ifdef CONFIG_DMAR_TABLE
| |