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PCI/MSI: Export pci_msi_set_enable(), pci_msix_clear_and_set_ctrl()

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Move pci_msi_set_enable() and pci_msix_clear_and_set_ctrl() to
drivers/pci/pci.h so they're available even when MSI isn't configured
into the kernel.

No functional change.

[bhelgaas: changelog, split into separate patch]
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
This commit is contained in:
Michael S. Tsirkin 2015-05-07 09:52:21 -05:00 committed by Bjorn Helgaas
parent 61b64abd39
commit 6a25f5e35a
2 changed files with 21 additions and 21 deletions
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21
drivers/pci/msi.c
View File

@ -185,27 +185,6 @@ void __weak arch_restore_msi_irqs(struct pci_dev *dev)
return default_restore_msi_irqs(dev);
}
static void pci_msi_set_enable(struct pci_dev *dev, int enable)
{
u16 control;
pci_read_config_word(dev, dev->msi_cap + PCI_MSI_FLAGS, &control);
control &= ~PCI_MSI_FLAGS_ENABLE;
if (enable)
control |= PCI_MSI_FLAGS_ENABLE;
pci_write_config_word(dev, dev->msi_cap + PCI_MSI_FLAGS, control);
}
static void pci_msix_clear_and_set_ctrl(struct pci_dev *dev, u16 clear, u16 set)
{
u16 ctrl;
pci_read_config_word(dev, dev->msix_cap + PCI_MSIX_FLAGS, &ctrl);
ctrl &= ~clear;
ctrl |= set;
pci_write_config_word(dev, dev->msix_cap + PCI_MSIX_FLAGS, ctrl);
}
static inline __attribute_const__ u32 msi_mask(unsigned x)
{
/* Don't shift by >= width of type */

21
drivers/pci/pci.h
View File

@ -146,6 +146,27 @@ static inline void pci_no_msi(void) { }
static inline void pci_msi_init_pci_dev(struct pci_dev *dev) { }
#endif
static inline void pci_msi_set_enable(struct pci_dev *dev, int enable)
{
u16 control;
pci_read_config_word(dev, dev->msi_cap + PCI_MSI_FLAGS, &control);
control &= ~PCI_MSI_FLAGS_ENABLE;
if (enable)
control |= PCI_MSI_FLAGS_ENABLE;
pci_write_config_word(dev, dev->msi_cap + PCI_MSI_FLAGS, control);
}
static inline void pci_msix_clear_and_set_ctrl(struct pci_dev *dev, u16 clear, u16 set)
{
u16 ctrl;
pci_read_config_word(dev, dev->msix_cap + PCI_MSIX_FLAGS, &ctrl);
ctrl &= ~clear;
ctrl |= set;
pci_write_config_word(dev, dev->msix_cap + PCI_MSIX_FLAGS, ctrl);
}
void pci_realloc_get_opt(char *);
static inline int pci_no_d1d2(struct pci_dev *dev)