138 lines
4.1 KiB
C
138 lines
4.1 KiB
C
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/***********************license start***************
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* Copyright (c) 2003-2010 Cavium Networks (support@cavium.com). All rights
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* reserved.
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*
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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* * Neither the name of Cavium Networks nor the names of
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* its contributors may be used to endorse or promote products
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* derived from this software without specific prior written
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* permission.
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* This Software, including technical data, may be subject to U.S. export control
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* laws, including the U.S. Export Administration Act and its associated
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* regulations, and may be subject to export or import regulations in other
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* countries.
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* TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS"
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* AND WITH ALL FAULTS AND CAVIUM NETWORKS MAKES NO PROMISES, REPRESENTATIONS OR
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* WARRANTIES, EITHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, WITH RESPECT TO
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* THE SOFTWARE, INCLUDING ITS CONDITION, ITS CONFORMITY TO ANY REPRESENTATION OR
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* DESCRIPTION, OR THE EXISTENCE OF ANY LATENT OR PATENT DEFECTS, AND CAVIUM
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* SPECIFICALLY DISCLAIMS ALL IMPLIED (IF ANY) WARRANTIES OF TITLE,
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* MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR A PARTICULAR PURPOSE, LACK OF
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* VIRUSES, ACCURACY OR COMPLETENESS, QUIET ENJOYMENT, QUIET POSSESSION OR
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* CORRESPONDENCE TO DESCRIPTION. THE ENTIRE RISK ARISING OUT OF USE OR
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* PERFORMANCE OF THE SOFTWARE LIES WITH YOU.
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***********************license end**************************************/
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/**
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* @file
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*
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* Interface to power-throttle control, measurement, and debugging
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* facilities.
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*
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* <hr>$Revision<hr>
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*
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*/
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#ifndef __CVMX_POWER_THROTTLE_H__
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#define __CVMX_POWER_THROTTLE_H__
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* a field of the POWTHROTTLE register
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*/
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static struct cvmx_power_throttle_rfield_t {
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char name[16]; /* the field's name */
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int32_t pos; /* position of the field's LSb */
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int32_t len; /* the field's length */
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} cvmx_power_throttle_rfield[] = {
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#define CVMX_PTH_INDEX_MAXPOW 0
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{"MAXPOW", 56, 8},
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#define CVMX_PTH_INDEX_POWER 1
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{"POWER" , 48, 8},
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#define CVMX_PTH_INDEX_THROTT 2
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{"THROTT", 40, 8},
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#define CVMX_PTH_INDEX_RESERVED 3
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{"Reserved", 28, 12},
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#define CVMX_PTH_INDEX_DISTAG 4
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{"DISTAG", 27, 1},
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#define CVMX_PTH_INDEX_PERIOD 5
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{"PERIOD", 24, 3},
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#define CVMX_PTH_INDEX_POWLIM 6
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{"POWLIM", 16, 8},
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#define CVMX_PTH_INDEX_MAXTHR 7
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{"MAXTHR", 8, 8},
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#define CVMX_PTH_INDEX_MINTHR 8
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{"MINTHR", 0, 8}
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#define CVMX_PTH_INDEX_MAX 9
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};
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#define CVMX_PTH_GET_MASK(len, pos) \
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((((uint64_t)1 << (len)) - 1) << (pos))
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/**
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* Get the i'th field of power-throttle register r.
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*/
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static inline uint64_t cvmx_power_throttle_get_field(int i, uint64_t r)
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{
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if (OCTEON_IS_MODEL(OCTEON_CN6XXX))
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{
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uint64_t m;
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struct cvmx_power_throttle_rfield_t *p;
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assert((i >= 0) && (i < CVMX_PTH_INDEX_MAX));
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p = &cvmx_power_throttle_rfield[i];
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m = CVMX_PTH_GET_MASK(p->len, p->pos);
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return((r & m) >> p->pos);
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}
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return 0;
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}
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/**
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* Set the i'th field of power-throttle register r to v.
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*/
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static inline int cvmx_power_throttle_set_field(int i, uint64_t r, uint64_t v)
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{
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if (OCTEON_IS_MODEL(OCTEON_CN6XXX))
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{
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uint64_t m;
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struct cvmx_power_throttle_rfield_t *p;
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assert((i >= 0) && (i < CVMX_PTH_INDEX_MAX));
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p = &cvmx_power_throttle_rfield[i];
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m = CVMX_PTH_GET_MASK(p->len, p->pos);
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return((~m & r) | ((v << p->pos) & m));
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}
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return 0;
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}
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/**
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* API Function Prototypes
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*/
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extern int cvmx_power_throttle_self(uint8_t percentage);
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extern int cvmx_power_throttle(uint8_t percentage, uint64_t coremask);
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#ifdef __cplusplus
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}
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#endif
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#endif /* __CVMX_POWER_THROTTLE_H__ */
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