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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2010-2018 Intel Corporation
*/
#ifndef _RTE_BUS_IFPGA_H_
#define _RTE_BUS_IFPGA_H_
/**
* @file
*
* RTE Intel FPGA Bus Interface
*/
#ifdef __cplusplus
extern "C" {
#endif
#include <rte_bus.h>
#include <rte_pci.h>
/** Name of Intel FPGA Bus */
#define IFPGA_BUS_NAME ifpga
/* Forward declarations */
struct rte_afu_device;
struct rte_afu_driver;
/** Double linked list of Intel FPGA AFU device. */
TAILQ_HEAD(ifpga_afu_dev_list, rte_afu_device);
/** Double linked list of Intel FPGA AFU device drivers. */
TAILQ_HEAD(ifpga_afu_drv_list, rte_afu_driver);
#define IFPGA_BUS_BITSTREAM_PATH_MAX_LEN 256
struct rte_afu_uuid {
uint64_t uuid_low;
uint64_t uuid_high;
} __attribute__ ((packed));
#define IFPGA_BUS_DEV_PORT_MAX 4
/**
* A structure describing an ID for a AFU driver. Each driver provides a
* table of these IDs for each device that it supports.
*/
struct rte_afu_id {
struct rte_afu_uuid uuid;
int port; /**< port number */
} __attribute__ ((packed));
/**
* A structure PR (Partial Reconfiguration) configuration AFU driver.
*/
struct rte_afu_pr_conf {
struct rte_afu_id afu_id;
int pr_enable;
char bs_path[IFPGA_BUS_BITSTREAM_PATH_MAX_LEN];
};
#define AFU_PRI_STR_SIZE (PCI_PRI_STR_SIZE + 8)
/**
* A structure describing a AFU device.
*/
struct rte_afu_device {
TAILQ_ENTRY(rte_afu_device) next; /**< Next in device list. */
struct rte_device device; /**< Inherit core device */
struct rte_rawdev *rawdev; /**< Point Rawdev */
struct rte_afu_id id; /**< AFU id within FPGA. */
uint32_t num_region; /**< number of regions found */
struct rte_mem_resource mem_resource[PCI_MAX_RESOURCE];
/**< AFU Memory Resource */
struct rte_intr_handle intr_handle; /**< Interrupt handle */
struct rte_afu_driver *driver; /**< Associated driver */
char path[IFPGA_BUS_BITSTREAM_PATH_MAX_LEN];
} __attribute__ ((packed));
/**
* @internal
* Helper macro for drivers that need to convert to struct rte_afu_device.
*/
#define RTE_DEV_TO_AFU(ptr) \
container_of(ptr, struct rte_afu_device, device)
#define RTE_DRV_TO_AFU_CONST(ptr) \
container_of(ptr, const struct rte_afu_driver, driver)
/**
* Initialization function for the driver called during FPGA BUS probing.
*/
typedef int (afu_probe_t)(struct rte_afu_device *);
/**
* Uninitialization function for the driver called during hotplugging.
*/
typedef int (afu_remove_t)(struct rte_afu_device *);
/**
* A structure describing a AFU device.
*/
struct rte_afu_driver {
TAILQ_ENTRY(rte_afu_driver) next; /**< Next afu driver. */
struct rte_driver driver; /**< Inherit core driver. */
afu_probe_t *probe; /**< Device Probe function. */
afu_remove_t *remove; /**< Device Remove function. */
const struct rte_afu_uuid *id_table; /**< AFU uuid within FPGA. */
};
static inline const char *
rte_ifpga_device_name(const struct rte_afu_device *afu)
{
if (afu && afu->device.name)
return afu->device.name;
return NULL;
}
/**
* Register a ifpga afu device driver.
*
* @param driver
* A pointer to a rte_afu_driver structure describing the driver
* to be registered.
*/
void rte_ifpga_driver_register(struct rte_afu_driver *driver);
/**
* Unregister a ifpga afu device driver.
*
* @param driver
* A pointer to a rte_afu_driver structure describing the driver
* to be unregistered.
*/
void rte_ifpga_driver_unregister(struct rte_afu_driver *driver);
#define RTE_PMD_REGISTER_AFU(nm, afudrv)\
static const char *afudrvinit_ ## nm ## _alias;\
RTE_INIT(afudrvinitfn_ ##afudrv)\
{\
(afudrv).driver.name = RTE_STR(nm);\
(afudrv).driver.alias = afudrvinit_ ## nm ## _alias;\
rte_ifpga_driver_register(&afudrv);\
} \
RTE_PMD_EXPORT_NAME(nm, __COUNTER__)
#define RTE_PMD_REGISTER_AFU_ALIAS(nm, alias)\
static const char *afudrvinit_ ## nm ## _alias = RTE_STR(alias)
#endif /* _RTE_BUS_IFPGA_H_ */
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