dev: new device driver infra

Type: feature
Change-Id: I20c56e0d3103624407f18365c2bc1273dea5c199
Signed-off-by: Damjan Marion <damarion@cisco.com>

1 files changed, 78 insertions, 0 deletions

diff --git a/src/vnet/dev/pci.h b/src/vnet/dev/pci.h
new file mode 100644
index 00000000000..dd104ea8507
--- /dev/null
+++ b/src/vnet/dev/pci.h
@@ -0,0 +1,78 @@
+/* SPDX-License-Identifier: Apache-2.0
+ * Copyright (c) 2023 Cisco Systems, Inc.
+ */
+
+#ifndef _VNET_DEV_PCI_H_
+#define _VNET_DEV_PCI_H_
+
+#include <vppinfra/clib.h>
+#include <vlib/pci/pci.h>
+#include <vnet/dev/dev.h>
+
+typedef void (vnet_dev_pci_intx_handler_fn_t) (vlib_main_t *vm,
+					       vnet_dev_t *dev);
+typedef void (vnet_dev_pci_msix_handler_fn_t) (vlib_main_t *vm,
+					       vnet_dev_t *dev, u16 line);
+
+typedef struct
+{
+  vlib_pci_addr_t addr;
+  u16 vendor_id;
+  u16 device_id;
+  u8 revision;
+} vnet_dev_bus_pci_device_info_t;
+
+typedef struct
+{
+  u8 pci_handle_valid : 1;
+  u16 n_msix_int;
+  vlib_pci_addr_t addr;
+  vlib_pci_dev_handle_t handle;
+  vnet_dev_pci_intx_handler_fn_t *intx_handler;
+  vnet_dev_pci_msix_handler_fn_t **msix_handlers;
+} vnet_dev_bus_pci_device_data_t;
+
+static_always_inline vnet_dev_bus_pci_device_data_t *
+vnet_dev_get_bus_pci_device_data (vnet_dev_t *dev)
+{
+  return (void *) dev->bus_data;
+}
+static_always_inline vlib_pci_dev_handle_t
+vnet_dev_get_pci_handle (vnet_dev_t *dev)
+{
+  return ((vnet_dev_bus_pci_device_data_t *) (dev->bus_data))->handle;
+}
+
+static_always_inline vlib_pci_addr_t
+vnet_dev_get_pci_addr (vnet_dev_t *dev)
+{
+  return ((vnet_dev_bus_pci_device_data_t *) (dev->bus_data))->addr;
+}
+
+static_always_inline vlib_pci_dev_handle_t
+vnet_dev_get_pci_n_msix_interrupts (vnet_dev_t *dev)
+{
+  return vnet_dev_get_bus_pci_device_data (dev)->n_msix_int;
+}
+
+vnet_dev_rv_t vnet_dev_pci_read_config_header (vlib_main_t *, vnet_dev_t *,
+					       vlib_pci_config_hdr_t *);
+
+vnet_dev_rv_t vnet_dev_pci_map_region (vlib_main_t *, vnet_dev_t *, u8,
+				       void **);
+vnet_dev_rv_t vnet_dev_pci_function_level_reset (vlib_main_t *, vnet_dev_t *);
+vnet_dev_rv_t vnet_dev_pci_bus_master_enable (vlib_main_t *, vnet_dev_t *);
+vnet_dev_rv_t vnet_dev_pci_bus_master_disable (vlib_main_t *, vnet_dev_t *);
+vnet_dev_rv_t vnet_dev_pci_intx_add_handler (vlib_main_t *, vnet_dev_t *,
+					     vnet_dev_pci_intx_handler_fn_t *);
+vnet_dev_rv_t vnet_dev_pci_intx_remove_handler (vlib_main_t *, vnet_dev_t *);
+vnet_dev_rv_t vnet_dev_pci_msix_add_handler (vlib_main_t *, vnet_dev_t *,
+					     vnet_dev_pci_msix_handler_fn_t *,
+					     u16, u16);
+vnet_dev_rv_t vnet_dev_pci_msix_remove_handler (vlib_main_t *, vnet_dev_t *,
+						u16, u16);
+vnet_dev_rv_t vnet_dev_pci_msix_enable (vlib_main_t *, vnet_dev_t *, u16, u16);
+vnet_dev_rv_t vnet_dev_pci_msix_disable (vlib_main_t *, vnet_dev_t *, u16,
+					 u16);
+
+#endif /* _VNET_DEV_PCI_H_ */