mirror of https://github.com/F-Stack/f-stack.git
107 lines
2.8 KiB
C
107 lines
2.8 KiB
C
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/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright (c) 2018, Microsoft Corporation.
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* All Rights Reserved.
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*/
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#ifndef BUS_VMBUS_DRIVER_H
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#define BUS_VMBUS_DRIVER_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <rte_bus_vmbus.h>
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#include <rte_compat.h>
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#include <dev_driver.h>
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struct vmbus_channel;
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struct vmbus_mon_page;
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/** Maximum number of VMBUS resources. */
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enum hv_uio_map {
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HV_TXRX_RING_MAP = 0,
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HV_INT_PAGE_MAP,
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HV_MON_PAGE_MAP,
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HV_RECV_BUF_MAP,
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HV_SEND_BUF_MAP
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};
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#define VMBUS_MAX_RESOURCE 5
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/**
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* A structure describing a VMBUS device.
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*/
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struct rte_vmbus_device {
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RTE_TAILQ_ENTRY(rte_vmbus_device) next; /**< Next probed VMBUS device */
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const struct rte_vmbus_driver *driver; /**< Associated driver */
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struct rte_device device; /**< Inherit core device */
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rte_uuid_t device_id; /**< VMBUS device id */
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rte_uuid_t class_id; /**< VMBUS device type */
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uint32_t relid; /**< id for primary */
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uint8_t monitor_id; /**< monitor page */
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int uio_num; /**< UIO device number */
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uint32_t *int_page; /**< VMBUS interrupt page */
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struct vmbus_channel *primary; /**< VMBUS primary channel */
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struct vmbus_mon_page *monitor_page; /**< VMBUS monitor page */
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struct rte_intr_handle *intr_handle; /**< Interrupt handle */
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struct rte_mem_resource resource[VMBUS_MAX_RESOURCE];
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};
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/**
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* Initialization function for the driver called during VMBUS probing.
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*/
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typedef int (vmbus_probe_t)(struct rte_vmbus_driver *,
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struct rte_vmbus_device *);
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/**
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* Initialization function for the driver called during hot plugging.
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*/
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typedef int (vmbus_remove_t)(struct rte_vmbus_device *);
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/**
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* A structure describing a VMBUS driver.
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*/
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struct rte_vmbus_driver {
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RTE_TAILQ_ENTRY(rte_vmbus_driver) next; /**< Next in list. */
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struct rte_driver driver;
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vmbus_probe_t *probe; /**< Device Probe function. */
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vmbus_remove_t *remove; /**< Device Remove function. */
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const rte_uuid_t *id_table; /**< ID table. */
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};
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/**
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* Register a VMBUS driver.
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*
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* @param driver
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* A pointer to a rte_vmbus_driver structure describing the driver
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* to be registered.
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*/
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__rte_internal
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void rte_vmbus_register(struct rte_vmbus_driver *driver);
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/**
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* Unregister a VMBUS driver.
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*
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* @param driver
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* A pointer to a rte_vmbus_driver structure describing the driver
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* to be unregistered.
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*/
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__rte_internal
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void rte_vmbus_unregister(struct rte_vmbus_driver *driver);
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/** Helper for VMBUS device registration from driver instance */
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#define RTE_PMD_REGISTER_VMBUS(nm, vmbus_drv) \
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RTE_INIT(vmbusinitfn_ ##nm) \
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{ \
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(vmbus_drv).driver.name = RTE_STR(nm); \
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rte_vmbus_register(&vmbus_drv); \
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} \
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RTE_PMD_EXPORT_NAME(nm, __COUNTER__)
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#ifdef __cplusplus
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}
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#endif
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#endif /* BUS_VMBUS_DRIVER_H */
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