ttl-fpga/sw/kousaten/src/fpga_cell.h

68 lines
1.8 KiB
C

#ifndef FPGA_CELL_H
#define FPGA_CELL_H
#include <stddef.h>
enum fpga_cell_position {
LEFT = 0,
TOP,
RIGHT,
BOTTOM,
FPGA_CELL_CONNECTION_COUNT
};
enum fpga_isp_channel {
FPGA_ISP_CHANNEL_NORMAL = 0,
FPGA_ISP_CHANNEL_BACK,
FPGA_ISP_CHANNEL_LFDN,
FPGA_ISP_CHANNEL_DNUP,
FPGA_ISP_CHANNEL_ERROR
};
struct fpga_cell_type
{
char identifier;
struct fpga_cell *(*cell_new)();
struct fpga_cell *(*get_next_isp)(struct fpga_cell *cell,
enum fpga_isp_channel *isp_channel);
unsigned long isp_length;
char *(*isp_generate_bitstream)(struct fpga_cell *cell);
};
/* FPGA Logic cell base parameters */
struct fpga_cell
{
struct fpga_cell_type *type;
struct fpga_cell *cell_connections[FPGA_CELL_CONNECTION_COUNT];
/* Cell-specific data will be appended depending on the cell type. */
};
struct fpga_chain {
struct fpga_cell **head;
int length;
};
void fpga_cell_init(struct fpga_cell *cell,
struct fpga_cell_type *cell_type);
int fpga_cell_connect(struct fpga_cell *fpga_cell,
struct fpga_cell *target_cell,
enum fpga_cell_position position);
struct fpga_cell *fpga_cell_get_far(struct fpga_cell *cell,
enum fpga_cell_position position);
struct fpga_cell *fpga_cell_get_next_isp_dummy(struct fpga_cell *fpga_cell,
enum fpga_isp_channel *isp_channel);
char *fpga_cell_isp_generate_bitstream_dummy(struct fpga_cell *cell);
struct fpga_cell *fpga_cell_new(char identifier);
#define FPGA_TO_CELL(a) ((struct fpga_cell*) a)
struct fpga_chain *fpga_isp_chain_new(struct fpga_cell *entry);
int fpga_cell_bitstream_set_bit(char *buffer, char *sbuffer,
int bit, int value);
int fpga_cell_bitstream_set_bits(char *buffer, char *sbuffer,
int value, int nbits, int *mapping);
int fpga_cell_bitstream_is_set(char *buffer, int bit);
#endif // FPGA_CELL_H