freebsd-dev/sys/contrib/octeon-sdk/cvmx-packet.h
Juli Mallett 04b6fa8330 Merge Cavium Octeon SDK 2.0 Simple Executive; this brings some fixes and new
facilities as well as support for the Octeon 2 family of SoCs.

XXX Note that with our antediluvian assembler, we can't support some Octeon 2
    instructions and fall back to using the old ones instead.
2010-11-28 08:18:16 +00:00

82 lines
3.0 KiB
C

/***********************license start***************
* Copyright (c) 2003-2010 Cavium Networks (support@cavium.com). All rights
* reserved.
*
*
* Redistribution and use in source and binary forms, with or without
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* * Redistributions in binary form must reproduce the above
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* with the distribution.
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* its contributors may be used to endorse or promote products
* derived from this software without specific prior written
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* This Software, including technical data, may be subject to U.S. export control
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***********************license end**************************************/
/**
* @file
*
* Packet buffer defines.
*
* <hr>$Revision: 49448 $<hr>
*
*/
#ifndef __CVMX_PACKET_H__
#define __CVMX_PACKET_H__
#ifdef __cplusplus
extern "C" {
#endif
/**
* This structure defines a buffer pointer on Octeon
*/
union cvmx_buf_ptr {
void* ptr;
uint64_t u64;
struct
{
uint64_t i : 1; /**< if set, invert the "free" pick of the overall packet. HW always sets this bit to 0 on inbound packet */
uint64_t back : 4; /**< Indicates the amount to back up to get to the buffer start in cache lines. In most cases
this is less than one complete cache line, so the value is zero */
uint64_t pool : 3; /**< The pool that the buffer came from / goes to */
uint64_t size :16; /**< The size of the segment pointed to by addr (in bytes) */
uint64_t addr :40; /**< Pointer to the first byte of the data, NOT buffer */
} s;
};
typedef union cvmx_buf_ptr cvmx_buf_ptr_t;
#ifdef __cplusplus
}
#endif
#endif /* __CVMX_PACKET_H__ */