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| author | Jake Oshins <jakeo@microsoft.com> | 2015-12-10 17:52:59 +0000 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2015-12-20 12:26:52 +0100 |
| commit | a4289dc2ec3a5821076a78ee9678909b4eff297e (patch) | |
| tree | 6f29c69fac58fd8b76bb49c27ccbe6cefdf5b5c2 /drivers/pci/msi.c | |
| parent | 4e8dbe9e93436bcf326adbab7f9761dd8e4ecbfc (diff) | |
| download | linux-a4289dc2ec3a5821076a78ee9678909b4eff297e.tar.gz linux-a4289dc2ec3a5821076a78ee9678909b4eff297e.tar.bz2 linux-a4289dc2ec3a5821076a78ee9678909b4eff297e.zip | |
genirq/msi: Export functions to allow MSI domains in modules
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: Jake 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.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'drivers/pci/msi.c')
| -rw-r--r-- | drivers/pci/msi.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c index 7eaa4c87fec7..7a0df3fdbfae 100644 --- a/drivers/pci/msi.c +++ b/drivers/pci/msi.c @@ -257,6 +257,7 @@ void pci_msi_mask_irq(struct irq_data *data) { msi_set_mask_bit(data, 1); } +EXPORT_SYMBOL_GPL(pci_msi_mask_irq); /** * pci_msi_unmask_irq - Generic irq chip callback to unmask PCI/MSI interrupts @@ -266,6 +267,7 @@ void pci_msi_unmask_irq(struct irq_data *data) { msi_set_mask_bit(data, 0); } +EXPORT_SYMBOL_GPL(pci_msi_unmask_irq); void default_restore_msi_irqs(struct pci_dev *dev) { @@ -1126,6 +1128,7 @@ struct pci_dev *msi_desc_to_pci_dev(struct msi_desc *desc) { return to_pci_dev(desc->dev); } +EXPORT_SYMBOL(msi_desc_to_pci_dev); void *msi_desc_to_pci_sysdata(struct msi_desc *desc) { @@ -1285,6 +1288,7 @@ struct irq_domain *pci_msi_create_irq_domain(struct fwnode_handle *fwnode, domain->bus_token = DOMAIN_BUS_PCI_MSI; return domain; } +EXPORT_SYMBOL_GPL(pci_msi_create_irq_domain); /** * pci_msi_domain_alloc_irqs - Allocate interrupts for @dev in @domain |