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| author | Bjorn Helgaas <bhelgaas@google.com> | 2020-12-03 12:51:09 -0600 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2020-12-04 12:09:03 -0600 |
| commit | 830dfe88ea37881cbb7d390e90b45611929d5943 (patch) | |
| tree | aee782cc03f40bd6dbc2523916bab9f6da9eb226 /drivers/pci/msi.c | |
| parent | cbc40d5c33af289548d2481e68a38512102cdd3e (diff) | |
| download | lwn-830dfe88ea37881cbb7d390e90b45611929d5943.tar.gz lwn-830dfe88ea37881cbb7d390e90b45611929d5943.zip | |
PCI/MSI: Move MSI/MSI-X flags updaters to msi.c
pci_msi_set_enable() and pci_msix_clear_and_set_ctrl() are only used from
msi.c, so move them from drivers/pci/pci.h to msi.c. No functional change
intended.
Link: https://lore.kernel.org/r/20201203185110.1583077-3-helgaas@kernel.org
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Diffstat (limited to 'drivers/pci/msi.c')
| -rw-r--r-- | drivers/pci/msi.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c index ff2bc85b516f..4c41e9ac62ec 100644 --- a/drivers/pci/msi.c +++ b/drivers/pci/msi.c @@ -412,6 +412,17 @@ static void pci_intx_for_msi(struct pci_dev *dev, int enable) pci_intx(dev, enable); } +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_restore_msi_state(struct pci_dev *dev) { u16 control; @@ -434,6 +445,16 @@ static void __pci_restore_msi_state(struct pci_dev *dev) 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 void __pci_restore_msix_state(struct pci_dev *dev) { struct msi_desc *entry; |