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Diffstat (limited to 'cvmx-sim-magic.h')
| -rw-r--r-- | cvmx-sim-magic.h | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/cvmx-sim-magic.h b/cvmx-sim-magic.h new file mode 100644 index 000000000000..5145b641918e --- /dev/null +++ b/cvmx-sim-magic.h @@ -0,0 +1,198 @@ +/***********************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 + * 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 Networks 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 NETWORKS 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: 49448 $<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)) + return __cvmx_sim_magic_return(SIM_MAGIC_GET_IOFREQ); + else + return 0; +} + +#ifdef __cplusplus +} +#endif + +#endif /* __CVMX_SIM_MAGIC_H__ */ |