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PCI/MSI: Move pci_irq_vector() to api.c

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To disentangle the maze in msi.c, all exported device-driver MSI APIs are
now to be grouped in one file, api.c.

Move pci_irq_vector() and let its kernel-doc match the rest of the file.

Signed-off-by: Ahmed S. Darwish <darwi@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://lore.kernel.org/r/20221111122014.984490384@linutronix.de
This commit is contained in:
Ahmed S. Darwish 2022-11-11 14:54:53 +01:00 committed by Thomas Gleixner
parent beddb5efb4
commit 017239c8db
2 changed files with 23 additions and 24 deletions
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23
drivers/pci/msi/api.c
View File

@ -182,3 +182,26 @@ int pci_alloc_irq_vectors_affinity(struct pci_dev *dev, unsigned int min_vecs,
return nvecs;
}
EXPORT_SYMBOL(pci_alloc_irq_vectors_affinity);
/**
* pci_irq_vector() - Get Linux IRQ number of a device interrupt vector
* @dev: the PCI device to operate on
* @nr: device-relative interrupt vector index (0-based); has different
* meanings, depending on interrupt mode
* MSI-X the index in the MSI-X vector table
* MSI the index of the enabled MSI vectors
* INTx must be 0
*
* Return: the Linux IRQ number, or -EINVAL if @nr is out of range
*/
int pci_irq_vector(struct pci_dev *dev, unsigned int nr)
{
unsigned int irq;
if (!dev->msi_enabled && !dev->msix_enabled)
return !nr ? dev->irq : -EINVAL;
irq = msi_get_virq(&dev->dev, nr);
return irq ? irq : -EINVAL;
}
EXPORT_SYMBOL(pci_irq_vector);

24
drivers/pci/msi/msi.c
View File

@ -899,30 +899,6 @@ void pci_free_irq_vectors(struct pci_dev *dev)
}
EXPORT_SYMBOL(pci_free_irq_vectors);
/**
* pci_irq_vector - return Linux IRQ number of a device vector
* @dev: PCI device to operate on
* @nr: Interrupt vector index (0-based)
*
* @nr has the following meanings depending on the interrupt mode:
* MSI-X: The index in the MSI-X vector table
* MSI: The index of the enabled MSI vectors
* INTx: Must be 0
*
* Return: The Linux interrupt number or -EINVAl if @nr is out of range.
*/
int pci_irq_vector(struct pci_dev *dev, unsigned int nr)
{
unsigned int irq;
if (!dev->msi_enabled && !dev->msix_enabled)
return !nr ? dev->irq : -EINVAL;
irq = msi_get_virq(&dev->dev, nr);
return irq ? irq : -EINVAL;
}
EXPORT_SYMBOL(pci_irq_vector);
/**
* pci_irq_get_affinity - return the affinity of a particular MSI vector
* @dev: PCI device to operate on