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authorDamjan Marion <damarion@cisco.com>2023-10-17 16:06:26 +0000
committerDamjan Marion <damarion@cisco.com>2023-11-02 13:41:32 +0000
commit38c619115b0399bae8b0dcf66e57e623cc50809c (patch)
tree2d40af83187c2dce0e971328ab7add4d9940ac57 /src/vlib/linux/pci.c
parentd3ef00098cd27e01bb24db15e3440fabbc025aa8 (diff)
dev: new device driver infra
Type: feature Change-Id: I20c56e0d3103624407f18365c2bc1273dea5c199 Signed-off-by: Damjan Marion <damarion@cisco.com>
Diffstat (limited to 'src/vlib/linux/pci.c')
-rw-r--r--src/vlib/linux/pci.c48
1 files changed, 48 insertions, 0 deletions
diff --git a/src/vlib/linux/pci.c b/src/vlib/linux/pci.c
index 1a70c568176..69d26fd7d64 100644
--- a/src/vlib/linux/pci.c
+++ b/src/vlib/linux/pci.c
@@ -886,6 +886,27 @@ vlib_pci_register_intx_handler (vlib_main_t * vm, vlib_pci_dev_handle_t h,
}
clib_error_t *
+vlib_pci_unregister_intx_handler (vlib_main_t *vm, vlib_pci_dev_handle_t h)
+{
+ linux_pci_device_t *p = linux_pci_get_device (h);
+ linux_pci_irq_t *irq = &p->intx_irq;
+
+ if (irq->intx_handler == 0)
+ return 0;
+
+ clib_file_del_by_index (&file_main, irq->clib_file_index);
+ if (p->type == LINUX_PCI_DEVICE_TYPE_VFIO)
+ {
+ close (irq->fd);
+ irq->fd = -1;
+ }
+
+ irq->intx_handler = 0;
+
+ return 0;
+}
+
+clib_error_t *
vlib_pci_register_msix_handler (vlib_main_t * vm, vlib_pci_dev_handle_t h,
u32 start, u32 count,
pci_msix_handler_function_t * msix_handler)
@@ -943,6 +964,33 @@ error:
}
clib_error_t *
+vlib_pci_unregister_msix_handler (vlib_main_t *vm, vlib_pci_dev_handle_t h,
+ u32 start, u32 count)
+{
+ clib_error_t *err = 0;
+ linux_pci_device_t *p = linux_pci_get_device (h);
+ u32 i;
+
+ if (p->type != LINUX_PCI_DEVICE_TYPE_VFIO)
+ return clib_error_return (0, "vfio driver is needed for MSI-X interrupt "
+ "support");
+
+ for (i = start; i < start + count; i++)
+ {
+ linux_pci_irq_t *irq = vec_elt_at_index (p->msix_irqs, i);
+
+ if (irq->fd != -1)
+ {
+ clib_file_del_by_index (&file_main, irq->clib_file_index);
+ close (irq->fd);
+ irq->fd = -1;
+ }
+ }
+
+ return err;
+}
+
+clib_error_t *
vlib_pci_enable_msix_irq (vlib_main_t * vm, vlib_pci_dev_handle_t h,
u16 start, u16 count)
{