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authorJiang Liu <jiang.liu@linux.intel.com>2014-11-15 17:24:07 +0300
committerThomas Gleixner <tglx@linutronix.de>2014-11-23 15:01:47 +0300
commit8e047adae969701c6cec136484bb9de8572af934 (patch)
treead2b2fdb2bfefc9a629d37b6d3731b2acac8e1b6 /include/linux/msi.h
parent3878eaefb89aa841ae4c2150490cee864ac628cb (diff)
downloadlinux-8e047adae969701c6cec136484bb9de8572af934.tar.xz
PCI/MSI: Provide mechanism to alloc/free MSI/MSIX interrupt from irqdomain
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.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'include/linux/msi.h')
-rw-r--r--include/linux/msi.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/msi.h b/include/linux/msi.h
index 1628788aee25..692f217ae813 100644
--- a/include/linux/msi.h
+++ b/include/linux/msi.h
@@ -228,6 +228,9 @@ struct irq_domain *pci_msi_create_irq_domain(struct device_node *node,
int pci_msi_domain_alloc_irqs(struct irq_domain *domain, struct pci_dev *dev,
int nvec, int type);
void pci_msi_domain_free_irqs(struct irq_domain *domain, struct pci_dev *dev);
+struct irq_domain *pci_msi_create_default_irq_domain(struct device_node *node,
+ struct msi_domain_info *info, struct irq_domain *parent);
+
irq_hw_number_t pci_msi_domain_calc_hwirq(struct pci_dev *dev,
struct msi_desc *desc);
int pci_msi_domain_check_cap(struct irq_domain *domain,