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/***********************license start***************
* Copyright (c) 2003-2010 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**************************************/
/**
* @file
*
* This is file defines ASM primitives for sim magic functions.
* <hr>$Revision: 70030 $<hr>
*
*
*/
#ifndef __CVMX_SIM_MAGIC_H__
#define __CVMX_SIM_MAGIC_H__
#ifdef __cplusplus
extern "C" {
#endif
/* Note, the following Magic function are only useful in the simulator
* environment. Typical simple executive application should not use
* these functions. Their access functions are defined and implemented in
* the newlib
* SIM_MAGIC_PUTS
* SIM_MAGIC_WRITE
* SIM_MAGIC_READ
* SIM_MAGIC_OPEN
* SIM_MAGIC_CLOSE
* SIM_MAGIC_STAT
* SIM_MAGIC_FSTAT
* SIM_MAGIC_LSEEK
* SIM_MAGIC_ALLOC_MEM
*/
/* Assembler macros for accessing simulator magic functions */
#define OCTEON_SIM_MAGIC_TRAP_ADDRESS 0x8000000feffe0000ull
/* Reg t9 (r25) specifies the actual magic function*/
#define SIM_MAGIC_PUTS 0x05
#define SIM_MAGIC_SIMPRINTF 0x06
#define SIM_MAGIC_WRITE 0x07
#define SIM_MAGIC_READ 0x08
#define SIM_MAGIC_OPEN 0x09
#define SIM_MAGIC_CLOSE 0x0A
#define SIM_MAGIC_STAT 0x0B
#define SIM_MAGIC_FSTAT 0x0C
#define SIM_MAGIC_LSEEK 0x0D
#define SIM_MAGIC_ALLOC_MEM 0x20
#define SIM_MAGIC_GET_CPUFREQ 0x31 /* SDK 1.9 release and after */
#define SIM_MAGIC_GET_MEMFREQ 0x32 /* SDK 1.9 release and after */
#define SIM_MAGIC_GET_IOFREQ 0x33 /* SDK 2.0 release and after, only set in Octeon2 */
/**
* @INTERNAL
* sim_magci implementation function with return code.
*
* @param func_no SIM magic function to invoke
*
* @return Result of the SIM magic function
*/
static inline int __cvmx_sim_magic_return(unsigned long long func_no)
{
register unsigned long long magic_addr asm ("$15");
register unsigned long long magic_func asm ("$25"); /* t9 */
int ret;
magic_addr = OCTEON_SIM_MAGIC_TRAP_ADDRESS;
magic_func = func_no;
asm volatile (
"dadd $24, $31, $0 \n"
"jalr $15 \n"
"dadd $31, $24, $0 \n"
"move %0, $2"
: "=r" (ret)
: "r" (magic_addr), "r" (magic_func)
: "$2", "$24" );
return ret;
}
/**
* @INTERNAL
* sim_magci implementation function without return code.
*
* @param func_no SIM magic function to invoke
*/
static inline void __cvmx_sim_magic_no_return(unsigned long long func_no)
{
register unsigned long long magic_addr asm ("$15");
register unsigned long long magic_func asm ("$25"); /* t9 */
magic_addr = OCTEON_SIM_MAGIC_TRAP_ADDRESS;
magic_func = func_no;
asm volatile (
"dadd $24, $31, $0 \n"
"jalr $15 \n"
"dadd $31, $24, $0 \n"
:
: "r" (magic_addr), "r" (magic_func)
: "$24" );
}
/**
* @INTERNAL
* SIM magic printf function, only support up to 8 parameters
*
* @param format
*/
static inline void __cvmx_sim_magic_simprintf(const char *format, ...)
{
CVMX_SYNC;
__cvmx_sim_magic_no_return( SIM_MAGIC_SIMPRINTF);
}
/**
* Retrive cpu core clock frequency from the simulator
*
* @return simulating core frequency
*/
static inline int cvmx_sim_magic_get_cpufreq(void)
{
CVMX_SYNC;
return __cvmx_sim_magic_return(SIM_MAGIC_GET_CPUFREQ);
}
/**
* Retrive DDR clock frequency from the simulator
*
* @return simulating DDR frequency
*/
static inline int cvmx_sim_magic_get_memfreq(void)
{
CVMX_SYNC;
return __cvmx_sim_magic_return(SIM_MAGIC_GET_MEMFREQ);
}
/**
* Retrive io core clock frequency from the simulator
*
* @return simulating core frequency
*/
static inline int cvmx_sim_magic_get_iofreq(void)
{
CVMX_SYNC;
if (OCTEON_IS_MODEL(OCTEON_CN6XXX) || OCTEON_IS_MODEL(OCTEON_CNF7XXX))
return __cvmx_sim_magic_return(SIM_MAGIC_GET_IOFREQ);
else
return 0;
}
#ifdef __cplusplus
}
#endif
#endif /* __CVMX_SIM_MAGIC_H__ */
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