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| author | Jiang Liu <jiang.liu@linux.intel.com> | 2014-11-15 22:24:07 +0800 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2014-11-23 13:01:47 +0100 |
| commit | 8e047adae969701c6cec136484bb9de8572af934 (patch) | |
| tree | ad2b2fdb2bfefc9a629d37b6d3731b2acac8e1b6 /include/linux/msi.h | |
| parent | 3878eaefb89aa841ae4c2150490cee864ac628cb (diff) | |
| download | lwn-8e047adae969701c6cec136484bb9de8572af934.tar.gz lwn-8e047adae969701c6cec136484bb9de8572af934.zip | |
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.h | 3 |
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, |