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Commit 75cb3426 authored by Hidetoshi Seto's avatar Hidetoshi Seto Committed by Jesse Barnes
Browse files

PCI MSI: MSI-X cleanup, msix_program_entries() 



Cleanup based on the prototype from Matthew Milcox.

Reviewed-by: default avatarMatthew Wilcox <willy@linux.intel.com>
Signed-off-by: default avatarHidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: default avatarJesse Barnes <jbarnes@virtuousgeek.org>
parent 5a05a9d8

drivers/pci/msi.c

+19 −10
Original line number Diff line number Diff line
@@ -447,6 +447,24 @@ static void __iomem *msix_map_region(struct pci_dev *dev, unsigned pos, 
	return ioremap_nocache(phys_addr, nr_entries * PCI_MSIX_ENTRY_SIZE);

}



static void msix_program_entries(struct pci_dev *dev,

					struct msix_entry *entries)

{

	struct msi_desc *entry;

	int i = 0;



	list_for_each_entry(entry, &dev->msi_list, list) {

		int offset = entries[i].entry * PCI_MSIX_ENTRY_SIZE +

						PCI_MSIX_ENTRY_VECTOR_CTRL;



		entries[i].vector = entry->irq;

		set_irq_msi(entry->irq, entry);

		entry->masked = readl(entry->mask_base + offset);

		msix_mask_irq(entry, 1);

		i++;

	}

}



/**

 * msix_capability_init - configure device's MSI-X capability

 * @dev: pointer to the pci_dev data structure of MSI-X device function
@@ -511,16 +529,7 @@ static int msix_capability_init(struct pci_dev *dev, 
	control |= PCI_MSIX_FLAGS_MASKALL | PCI_MSIX_FLAGS_ENABLE;

	pci_write_config_word(dev, pos + PCI_MSIX_FLAGS, control);



	i = 0;

	list_for_each_entry(entry, &dev->msi_list, list) {

		entries[i].vector = entry->irq;

		set_irq_msi(entry->irq, entry);

		j = entries[i].entry;

		entry->masked = readl(base + j * PCI_MSIX_ENTRY_SIZE +

						PCI_MSIX_ENTRY_VECTOR_CTRL);

		msix_mask_irq(entry, 1);

		i++;

	}

	msix_program_entries(dev, entries);



	/* Set MSI-X enabled bits and unmask the function */

	pci_intx_for_msi(dev, 0);