04b6fa8330
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.
199 lines
5.6 KiB
C
199 lines
5.6 KiB
C
/***********************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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* This is file defines ASM primitives for sim magic functions.
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* <hr>$Revision: 49448 $<hr>
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*
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*
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*/
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#ifndef __CVMX_SIM_MAGIC_H__
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#define __CVMX_SIM_MAGIC_H__
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Note, the following Magic function are only useful in the simulator
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* environment. Typical simple executive application should not use
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* these functions. Their access functions are defined and implemented in
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* the newlib
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* SIM_MAGIC_PUTS
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* SIM_MAGIC_WRITE
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* SIM_MAGIC_READ
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* SIM_MAGIC_OPEN
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* SIM_MAGIC_CLOSE
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* SIM_MAGIC_STAT
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* SIM_MAGIC_FSTAT
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* SIM_MAGIC_LSEEK
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* SIM_MAGIC_ALLOC_MEM
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*/
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/* Assembler macros for accessing simulator magic functions */
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#define OCTEON_SIM_MAGIC_TRAP_ADDRESS 0x8000000feffe0000ull
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/* Reg t9 (r25) specifies the actual magic function*/
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#define SIM_MAGIC_PUTS 0x05
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#define SIM_MAGIC_SIMPRINTF 0x06
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#define SIM_MAGIC_WRITE 0x07
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#define SIM_MAGIC_READ 0x08
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#define SIM_MAGIC_OPEN 0x09
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#define SIM_MAGIC_CLOSE 0x0A
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#define SIM_MAGIC_STAT 0x0B
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#define SIM_MAGIC_FSTAT 0x0C
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#define SIM_MAGIC_LSEEK 0x0D
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#define SIM_MAGIC_ALLOC_MEM 0x20
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#define SIM_MAGIC_GET_CPUFREQ 0x31 /* SDK 1.9 release and after */
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#define SIM_MAGIC_GET_MEMFREQ 0x32 /* SDK 1.9 release and after */
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#define SIM_MAGIC_GET_IOFREQ 0x33 /* SDK 2.0 release and after, only set in Octeon2 */
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/**
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* @INTERNAL
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* sim_magci implementation function with return code.
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*
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* @param func_no SIM magic function to invoke
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*
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* @return Result of the SIM magic function
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*/
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static inline int __cvmx_sim_magic_return(unsigned long long func_no)
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{
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register unsigned long long magic_addr asm ("$15");
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register unsigned long long magic_func asm ("$25"); /* t9 */
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int ret;
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magic_addr = OCTEON_SIM_MAGIC_TRAP_ADDRESS;
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magic_func = func_no;
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asm volatile (
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"dadd $24, $31, $0 \n"
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"jalr $15 \n"
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"dadd $31, $24, $0 \n"
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"move %0, $2"
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: "=r" (ret)
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: "r" (magic_addr), "r" (magic_func)
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: "$2", "$24" );
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return ret;
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}
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/**
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* @INTERNAL
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* sim_magci implementation function without return code.
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*
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* @param func_no SIM magic function to invoke
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*/
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static inline void __cvmx_sim_magic_no_return(unsigned long long func_no)
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{
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register unsigned long long magic_addr asm ("$15");
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register unsigned long long magic_func asm ("$25"); /* t9 */
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magic_addr = OCTEON_SIM_MAGIC_TRAP_ADDRESS;
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magic_func = func_no;
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asm volatile (
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"dadd $24, $31, $0 \n"
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"jalr $15 \n"
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"dadd $31, $24, $0 \n"
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:
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: "r" (magic_addr), "r" (magic_func)
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: "$24" );
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}
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/**
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* @INTERNAL
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* SIM magic printf function, only support up to 8 parameters
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*
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* @param format
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*/
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static inline void __cvmx_sim_magic_simprintf(const char *format, ...)
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{
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CVMX_SYNC;
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__cvmx_sim_magic_no_return( SIM_MAGIC_SIMPRINTF);
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}
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/**
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* Retrive cpu core clock frequency from the simulator
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*
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* @return simulating core frequency
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*/
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static inline int cvmx_sim_magic_get_cpufreq(void)
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{
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CVMX_SYNC;
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return __cvmx_sim_magic_return(SIM_MAGIC_GET_CPUFREQ);
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}
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/**
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* Retrive DDR clock frequency from the simulator
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*
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* @return simulating DDR frequency
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*/
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static inline int cvmx_sim_magic_get_memfreq(void)
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{
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CVMX_SYNC;
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return __cvmx_sim_magic_return(SIM_MAGIC_GET_MEMFREQ);
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}
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/**
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* Retrive io core clock frequency from the simulator
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*
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* @return simulating core frequency
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*/
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static inline int cvmx_sim_magic_get_iofreq(void)
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{
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CVMX_SYNC;
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if (OCTEON_IS_MODEL(OCTEON_CN6XXX))
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return __cvmx_sim_magic_return(SIM_MAGIC_GET_IOFREQ);
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else
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return 0;
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}
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#ifdef __cplusplus
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}
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#endif
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#endif /* __CVMX_SIM_MAGIC_H__ */
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