diff options
| author | Bjorn Helgaas <bhelgaas@google.com> | 2024-04-11 01:13:02 +0300 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2024-05-16 01:01:51 +0300 |
| commit | 1794808fb1b34c30bac9f1e5d41b9df628f54260 (patch) | |
| tree | d31fd64e0430906537f61304fdeb2d8a137982e6 /drivers/pci/msi | |
| parent | 372c669271bff736c5bc275c982d8d1b4f1f147c (diff) | |
| download | linux-1794808fb1b34c30bac9f1e5d41b9df628f54260.tar.xz | |
Revert "PCI/MSI: Provide pci_ims_alloc/free_irq()"
This reverts commit c9e5bea273834a63b5e9ba90ad94b305ba50704e.
IMS (Interrupt Message Store) support appeared in v6.2, but there are no
users yet.
Remove it for now. We can add it back when a user comes along. If this is
re-added later, the relevant part of 41efa431244f ("PCI/MSI: Provide stubs
for IMS functions") should be squashed into it.
Link: https://lore.kernel.org/r/20240410221307.2162676-3-helgaas@kernel.org
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'drivers/pci/msi')
| -rw-r--r-- | drivers/pci/msi/api.c | 50 |
1 files changed, 0 insertions, 50 deletions
diff --git a/drivers/pci/msi/api.c b/drivers/pci/msi/api.c index be679aa5db64..3c1cd29c5cf2 100644 --- a/drivers/pci/msi/api.c +++ b/drivers/pci/msi/api.c @@ -366,56 +366,6 @@ const struct cpumask *pci_irq_get_affinity(struct pci_dev *dev, int nr) EXPORT_SYMBOL(pci_irq_get_affinity); /** - * pci_ims_alloc_irq - Allocate an interrupt on a PCI/IMS interrupt domain - * @dev: The PCI device to operate on - * @icookie: Pointer to an IMS implementation specific cookie for this - * IMS instance (PASID, queue ID, pointer...). - * The cookie content is copied into the MSI descriptor for the - * interrupt chip callbacks or domain specific setup functions. - * @affdesc: Optional pointer to an interrupt affinity descriptor - * - * There is no index for IMS allocations as IMS is an implementation - * specific storage and does not have any direct associations between - * index, which might be a pure software construct, and device - * functionality. This association is established by the driver either via - * the index - if there is a hardware table - or in case of purely software - * managed IMS implementation the association happens via the - * irq_write_msi_msg() callback of the implementation specific interrupt - * chip, which utilizes the provided @icookie to store the MSI message in - * the appropriate place. - * - * Return: A struct msi_map - * - * On success msi_map::index contains the allocated index (>= 0) and - * msi_map::virq the allocated Linux interrupt number (> 0). - * - * On fail msi_map::index contains the error code and msi_map::virq - * is set to 0. - */ -struct msi_map pci_ims_alloc_irq(struct pci_dev *dev, union msi_instance_cookie *icookie, - const struct irq_affinity_desc *affdesc) -{ - return msi_domain_alloc_irq_at(&dev->dev, MSI_SECONDARY_DOMAIN, MSI_ANY_INDEX, - affdesc, icookie); -} -EXPORT_SYMBOL_GPL(pci_ims_alloc_irq); - -/** - * pci_ims_free_irq - Allocate an interrupt on a PCI/IMS interrupt domain - * which was allocated via pci_ims_alloc_irq() - * @dev: The PCI device to operate on - * @map: A struct msi_map describing the interrupt to free as - * returned from pci_ims_alloc_irq() - */ -void pci_ims_free_irq(struct pci_dev *dev, struct msi_map map) -{ - if (WARN_ON_ONCE(map.index < 0 || map.virq <= 0)) - return; - msi_domain_free_irqs_range(&dev->dev, MSI_SECONDARY_DOMAIN, map.index, map.index); -} -EXPORT_SYMBOL_GPL(pci_ims_free_irq); - -/** * pci_free_irq_vectors() - Free previously allocated IRQs for a device * @dev: the PCI device to operate on * |