Quelle fpga-mgr.h
Sprache: C
/* SPDX-License-Identifier: GPL-2.0 */
/*
* FPGA Framework
*
* Copyright ( C ) 2013 - 2016 Altera Corporation
* Copyright ( C ) 2017 Intel Corporation
*/
#ifndef _LINUX_FPGA_MGR_H
#define _LINUX_FPGA_MGR_H
#include <linux/mutex.h>
#include <linux/platform_device.h>
struct fpga_manager;
struct sg_table;
/**
* enum fpga_mgr_states - fpga framework states
* @ FPGA_MGR_STATE_UNKNOWN : can ' t determine state
* @ FPGA_MGR_STATE_POWER_OFF : FPGA power is off
* @ FPGA_MGR_STATE_POWER_UP : FPGA reports power is up
* @ FPGA_MGR_STATE_RESET : FPGA in reset state
* @ FPGA_MGR_STATE_FIRMWARE_REQ : firmware request in progress
* @ FPGA_MGR_STATE_FIRMWARE_REQ_ERR : firmware request failed
* @ FPGA_MGR_STATE_PARSE_HEADER : parse FPGA image header
* @ FPGA_MGR_STATE_PARSE_HEADER_ERR : Error during PARSE_HEADER stage
* @ FPGA_MGR_STATE_WRITE_INIT : preparing FPGA for programming
* @ FPGA_MGR_STATE_WRITE_INIT_ERR : Error during WRITE_INIT stage
* @ FPGA_MGR_STATE_WRITE : writing image to FPGA
* @ FPGA_MGR_STATE_WRITE_ERR : Error while writing FPGA
* @ FPGA_MGR_STATE_WRITE_COMPLETE : Doing post programming steps
* @ FPGA_MGR_STATE_WRITE_COMPLETE_ERR : Error during WRITE_COMPLETE
* @ FPGA_MGR_STATE_OPERATING : FPGA is programmed and operating
*/
enum fpga_mgr_states {
/* default FPGA states */
FPGA_MGR_STATE_UNKNOWN,
FPGA_MGR_STATE_POWER_OFF,
FPGA_MGR_STATE_POWER_UP,
FPGA_MGR_STATE_RESET,
/* getting an image for loading */
FPGA_MGR_STATE_FIRMWARE_REQ,
FPGA_MGR_STATE_FIRMWARE_REQ_ERR,
/* write sequence: parse header, init, write, complete */
FPGA_MGR_STATE_PARSE_HEADER,
FPGA_MGR_STATE_PARSE_HEADER_ERR,
FPGA_MGR_STATE_WRITE_INIT,
FPGA_MGR_STATE_WRITE_INIT_ERR,
FPGA_MGR_STATE_WRITE,
FPGA_MGR_STATE_WRITE_ERR,
FPGA_MGR_STATE_WRITE_COMPLETE,
FPGA_MGR_STATE_WRITE_COMPLETE_ERR,
/* fpga is programmed and operating */
FPGA_MGR_STATE_OPERATING,
};
/**
* DOC : FPGA Manager flags
*
* Flags used in the & fpga_image_info - > flags field
*
* % FPGA_MGR_PARTIAL_RECONFIG : do partial reconfiguration if supported
*
* % FPGA_MGR_EXTERNAL_CONFIG : FPGA has been configured prior to Linux booting
*
* % FPGA_MGR_ENCRYPTED_BITSTREAM : indicates bitstream is encrypted
*
* % FPGA_MGR_BITSTREAM_LSB_FIRST : SPI bitstream bit order is LSB first
*
* % FPGA_MGR_COMPRESSED_BITSTREAM : FPGA bitstream is compressed
*/
#define FPGA_MGR_PARTIAL_RECONFIG BIT(0 )
#define FPGA_MGR_EXTERNAL_CONFIG BIT(1 )
#define FPGA_MGR_ENCRYPTED_BITSTREAM BIT(2 )
#define FPGA_MGR_BITSTREAM_LSB_FIRST BIT(3 )
#define FPGA_MGR_COMPRESSED_BITSTREAM BIT(4 )
/**
* struct fpga_image_info - information specific to an FPGA image
* @ flags : boolean flags as defined above
* @ enable_timeout_us : maximum time to enable traffic through bridge ( uSec )
* @ disable_timeout_us : maximum time to disable traffic through bridge ( uSec )
* @ config_complete_timeout_us : maximum time for FPGA to switch to operating
* status in the write_complete op .
* @ firmware_name : name of FPGA image firmware file
* @ sgt : scatter / gather table containing FPGA image
* @ buf : contiguous buffer containing FPGA image
* @ count : size of buf
* @ header_size : size of image header .
* @ data_size : size of image data to be sent to the device . If not specified ,
* whole image will be used . Header may be skipped in either case .
* @ region_id : id of target region
* @ dev : device that owns this
* @ overlay : Device Tree overlay
*/
struct fpga_image_info {
u32 flags;
u32 enable_timeout_us;
u32 disable_timeout_us;
u32 config_complete_timeout_us;
char *firmware_name;
struct sg_table *sgt;
const char *buf;
size_t count;
size_t header_size;
size_t data_size;
int region_id;
struct device *dev;
#ifdef CONFIG_OF
struct device_node *overlay;
#endif
};
/**
* struct fpga_compat_id - id for compatibility check
*
* @ id_h : high 64 bit of the compat_id
* @ id_l : low 64 bit of the compat_id
*/
struct fpga_compat_id {
u64 id_h;
u64 id_l;
};
/**
* struct fpga_manager_info - collection of parameters for an FPGA Manager
* @ name : fpga manager name
* @ compat_id : FPGA manager id for compatibility check .
* @ mops : pointer to structure of fpga manager ops
* @ priv : fpga manager private data
*
* fpga_manager_info contains parameters for the register_full function .
* These are separated into an info structure because they some are optional
* others could be added to in the future . The info structure facilitates
* maintaining a stable API .
*/
struct fpga_manager_info {
const char *name;
struct fpga_compat_id *compat_id;
const struct fpga_manager_ops *mops;
void *priv;
};
/**
* struct fpga_manager_ops - ops for low level fpga manager drivers
* @ initial_header_size : minimum number of bytes that should be passed into
* parse_header and write_init .
* @ skip_header : bool flag to tell fpga - mgr core whether it should skip
* info - > header_size part at the beginning of the image when invoking
* write callback .
* @ state : returns an enum value of the FPGA ' s state
* @ status : returns status of the FPGA , including reconfiguration error code
* @ parse_header : parse FPGA image header to set info - > header_size and
* info - > data_size . In case the input buffer is not large enough , set
* required size to info - > header_size and return - EAGAIN .
* @ write_init : prepare the FPGA to receive configuration data
* @ write : write count bytes of configuration data to the FPGA
* @ write_sg : write the scatter list of configuration data to the FPGA
* @ write_complete : set FPGA to operating state after writing is done
* @ fpga_remove : optional : Set FPGA into a specific state during driver remove
* @ groups : optional attribute groups .
*
* fpga_manager_ops are the low level functions implemented by a specific
* fpga manager driver . The optional ones are tested for NULL before being
* called , so leaving them out is fine .
*/
struct fpga_manager_ops {
size_t initial_header_size;
bool skip_header;
enum fpga_mgr_states (*state)(struct fpga_manager *mgr);
u64 (*status)(struct fpga_manager *mgr);
int (*parse_header)(struct fpga_manager *mgr,
struct fpga_image_info *info,
const char *buf, size_t count);
int (*write_init)(struct fpga_manager *mgr,
struct fpga_image_info *info,
const char *buf, size_t count);
int (*write)(struct fpga_manager *mgr, const char *buf, size_t count);
int (*write_sg)(struct fpga_manager *mgr, struct sg_table *sgt);
int (*write_complete)(struct fpga_manager *mgr,
struct fpga_image_info *info);
void (*fpga_remove)(struct fpga_manager *mgr);
const struct attribute_group **groups;
};
/* FPGA manager status: Partial/Full Reconfiguration errors */
#define FPGA_MGR_STATUS_OPERATION_ERR BIT(0 )
#define FPGA_MGR_STATUS_CRC_ERR BIT(1 )
#define FPGA_MGR_STATUS_INCOMPATIBLE_IMAGE_ERR BIT(2 )
#define FPGA_MGR_STATUS_IP_PROTOCOL_ERR BIT(3 )
#define FPGA_MGR_STATUS_FIFO_OVERFLOW_ERR BIT(4 )
/**
* struct fpga_manager - fpga manager structure
* @ name : name of low level fpga manager
* @ dev : fpga manager device
* @ ref_mutex : only allows one reference to fpga manager
* @ state : state of fpga manager
* @ compat_id : FPGA manager id for compatibility check .
* @ mops : pointer to struct of fpga manager ops
* @ mops_owner : module containing the mops
* @ priv : low level driver private date
*/
struct fpga_manager {
const char *name;
struct device dev;
struct mutex ref_mutex;
enum fpga_mgr_states state;
struct fpga_compat_id *compat_id;
const struct fpga_manager_ops *mops;
struct module *mops_owner;
void *priv;
};
#define to_fpga_manager(d) container_of(d, struct fpga_manager, dev)
struct fpga_image_info *fpga_image_info_alloc(struct device *dev);
void fpga_image_info_free(struct fpga_image_info *info);
int fpga_mgr_load(struct fpga_manager *mgr, struct fpga_image_info *info);
int fpga_mgr_lock(struct fpga_manager *mgr);
void fpga_mgr_unlock(struct fpga_manager *mgr);
struct fpga_manager *of_fpga_mgr_get(struct device_node *node);
struct fpga_manager *fpga_mgr_get(struct device *dev);
void fpga_mgr_put(struct fpga_manager *mgr);
#define fpga_mgr_register_full(parent, info) \
__fpga_mgr_register_full(parent, info, THIS_MODULE)
struct fpga_manager *
__fpga_mgr_register_full(struct device *parent, const struct fpga_manager_info *info,
struct module *owner);
#define fpga_mgr_register(parent, name, mops, priv) \
__fpga_mgr_register(parent, name, mops, priv, THIS_MODULE)
struct fpga_manager *
__fpga_mgr_register(struct device *parent, const char *name,
const struct fpga_manager_ops *mops, void *priv, struct module *owner);
void fpga_mgr_unregister(struct fpga_manager *mgr);
#define devm_fpga_mgr_register_full(parent, info) \
__devm_fpga_mgr_register_full(parent, info, THIS_MODULE)
struct fpga_manager *
__devm_fpga_mgr_register_full(struct device *parent, const struct fpga_manager_info *info,
struct module *owner);
#define devm_fpga_mgr_register(parent, name, mops, priv) \
__devm_fpga_mgr_register(parent, name, mops, priv, THIS_MODULE)
struct fpga_manager *
__devm_fpga_mgr_register(struct device *parent, const char *name,
const struct fpga_manager_ops *mops, void *priv,
struct module *owner);
#endif /*_LINUX_FPGA_MGR_H */
Messung V0.5 in Prozent C=95 H=98 G=96
¤ Dauer der Verarbeitung: 0.6 Sekunden
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*© Formatika GbR, Deutschland
2026-10-11
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