/* 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; constchar *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 64bit of the compat_id * @id_l: low 64bit 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 { constchar *name; struct fpga_compat_id *compat_id; conststruct 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, constchar *buf, size_t count); int (*write_init)(struct fpga_manager *mgr, struct fpga_image_info *info, constchar *buf, size_t count); int (*write)(struct fpga_manager *mgr, constchar *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); conststruct attribute_group **groups;
};
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