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#ifndef _REQ_CTX_H
#define _REQ_CTX_H

#define RCTX_SIZE_LARGE	2048
#define RCTX_SIZE_SMALL	128

#define MAX_HDRSIZE	sizeof(struct openpcd_hdr)
#define MAX_REQSIZE	(64-MAX_HDRSIZE)

#define req_buf_payload(x)	(x->data[x->hdr_len])
#define req_buf_hdr(x)		(x->data[0])

#include <sys/types.h>
#include <lib_AT91SAM7.h>

struct req_ctx {
	volatile u_int32_t state;
	u_int16_t size;
	u_int16_t tot_len;
	u_int8_t *data;
};

#define RCTX_STATE_FREE			0xfe
#define RCTX_STATE_UDP_RCV_BUSY		0x01
#define RCTX_STATE_UDP_RCV_DONE		0x02
#define RCTX_STATE_MAIN_PROCESSING	0x03
#define RCTX_STATE_RC632IRQ_BUSY	0x04

#define RCTX_STATE_UDP_EP2_PENDING	0x10
#define RCTX_STATE_UDP_EP2_BUSY		0x11

#define RCTX_STATE_UDP_EP3_PENDING	0x12
#define RCTX_STATE_UDP_EP3_BUSY		0x13

#define RCTX_STATE_SSC_RX_BUSY		0x20

#define RCTX_STATE_LIBRFID_BUSY		0x30

#define RCTX_STATE_PIOIRQ_BUSY		0x80

#define RCTX_STATE_INVALID		0xff

extern struct req_ctx __ramfunc *req_ctx_find_get(int large, unsigned long old_state, unsigned long new_state);
extern struct req_ctx *req_ctx_find_busy(void);
extern void req_ctx_set_state(struct req_ctx *ctx, unsigned long new_state);
extern void req_ctx_put(struct req_ctx *ctx);
extern u_int8_t req_ctx_num(struct req_ctx *ctx);

#endif /* _REQ_CTX_H */