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/***********************license start***********************************
* Copyright (c) 2003-2017 Cavium Inc. (support@cavium.com). All rights
* reserved.
*
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
*
* * Neither the name of Cavium Inc. nor the names of
* its contributors may be used to endorse or promote products
* derived from this software without specific prior written
* permission.
*
* This Software, including technical data, may be subject to U.S. export
* control laws, including the U.S. Export Administration Act and its
* associated regulations, and may be subject to export or import
* regulations in other countries.
*
* TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS"
* AND WITH ALL FAULTS AND CAVIUM INC. MAKES NO PROMISES, REPRESENTATIONS OR
* WARRANTIES, EITHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, WITH RESPECT
* TO THE SOFTWARE, INCLUDING ITS CONDITION, ITS CONFORMITY TO ANY
* REPRESENTATION OR DESCRIPTION, OR THE EXISTENCE OF ANY LATENT OR PATENT
* DEFECTS, AND CAVIUM SPECIFICALLY DISCLAIMS ALL IMPLIED (IF ANY) WARRANTIES
* OF TITLE, MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR A PARTICULAR
* PURPOSE, LACK OF VIRUSES, ACCURACY OR COMPLETENESS, QUIET ENJOYMENT,
* QUIET POSSESSION OR CORRESPONDENCE TO DESCRIPTION. THE ENTIRE RISK
* ARISING OUT OF USE OR PERFORMANCE OF THE SOFTWARE LIES WITH YOU.
***********************license end**************************************/
#include <bdk.h>
#include <libbdk-arch/bdk-csrs-gti.h>
#include <libbdk-arch/bdk-csrs-ocx.h>
#include <libbdk-hal/bdk-clock.h>
#include <libbdk-arch/bdk-csrs-rst.h>
/**
* Get cycle count based on the clock type.
*
* @param clock - Enumeration of the clock type.
* @return - Get the number of cycles executed so far.
*/
uint64_t __bdk_clock_get_count_slow(bdk_clock_t clock)
{
bdk_node_t node = bdk_numa_local();
BDK_CSR_INIT(rst_boot, node, BDK_RST_BOOT);
uint64_t ref_cntr = BDK_CSR_READ(node, BDK_RST_REF_CNTR);
switch(clock)
{
case BDK_CLOCK_TIME:
return 0; /* Handled in fast path */
case BDK_CLOCK_MAIN_REF:
return ref_cntr;
case BDK_CLOCK_RCLK:
return ref_cntr * rst_boot.s.c_mul;
case BDK_CLOCK_SCLK:
return ref_cntr * rst_boot.s.pnr_mul;
}
return 0;
}
/**
* Get clock rate based on the clock type.
*
* @param node Node to use in a Numa setup. Can be an exact ID or a special value.
* @param clock - Enumeration of the clock type.
* @return - return the clock rate.
*/
uint64_t __bdk_clock_get_rate_slow(bdk_node_t node, bdk_clock_t clock)
{
/* This is currently defined to be 50Mhz */
const uint64_t REF_CLOCK = 50000000;
BDK_CSR_INIT(mio_rst_boot, node, BDK_RST_BOOT);
switch (clock)
{
case BDK_CLOCK_TIME:
return BDK_GTI_RATE; /* Programed as part of setup */
case BDK_CLOCK_MAIN_REF:
return REF_CLOCK;
case BDK_CLOCK_RCLK:
return REF_CLOCK * mio_rst_boot.s.c_mul;
case BDK_CLOCK_SCLK:
return REF_CLOCK * mio_rst_boot.s.pnr_mul;
}
return 0;
}
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