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Diffstat (limited to 'src/vendorcode/cavium/include/bdk/libbdk-hal/bdk-access-native.h')
| -rw-r--r-- | src/vendorcode/cavium/include/bdk/libbdk-hal/bdk-access-native.h | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/src/vendorcode/cavium/include/bdk/libbdk-hal/bdk-access-native.h b/src/vendorcode/cavium/include/bdk/libbdk-hal/bdk-access-native.h new file mode 100644 index 0000000000..aa9d87bf37 --- /dev/null +++ b/src/vendorcode/cavium/include/bdk/libbdk-hal/bdk-access-native.h @@ -0,0 +1,155 @@ +/***********************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**************************************/ + +/** + * @file + * Functions for accessing memory and CSRs when we are compiling + * natively. + * + * <hr>$Revision: 38306 $<hr> +*/ + +/** + * Convert a memory pointer (void*) into a hardware compatible + * memory address (uint64_t). Cavium hardware widgets don't + * understand logical addresses. + * + * @param ptr C style memory pointer + * @return Hardware physical address + */ +static inline uint64_t bdk_ptr_to_phys(void *ptr) __attribute__ ((pure, always_inline)); +static inline uint64_t bdk_ptr_to_phys(void *ptr) +{ + bdk_warn_if(!ptr, "bdk_ptr_to_phys() passed a NULL\n"); + return (long)ptr; +} + + +/** + * Convert a hardware physical address (uint64_t) into a + * memory pointer (void *). + * + * @param physical_address + * Hardware physical address to memory + * @return Pointer to memory + */ +static inline void *bdk_phys_to_ptr(uint64_t physical_address) __attribute__ ((pure, always_inline)); +static inline void *bdk_phys_to_ptr(uint64_t physical_address) +{ + bdk_warn_if(physical_address==0, "bdk_phys_to_ptr() passed a zero address\n"); + return (void*)(long)physical_address; +} + + +/* We have a full 64bit ABI. Writing to a 64bit address can be done with + a simple volatile pointer */ +#define BDK_BUILD_WRITE64(TYPE) \ +static inline void bdk_write64_##TYPE(uint64_t addr, TYPE##_t val) __attribute__ ((always_inline)); \ +static inline void bdk_write64_##TYPE(uint64_t addr, TYPE##_t val) \ +{ \ + *(volatile TYPE##_t *)bdk_phys_to_ptr(addr) = val; \ +} + +/* We have a full 64bit ABI. Writing to a 64bit address can be done with + a simple volatile pointer */ +#define BDK_BUILD_READ64(TYPE) \ +static inline TYPE##_t bdk_read64_##TYPE(uint64_t addr) __attribute__ ((always_inline)); \ +static inline TYPE##_t bdk_read64_##TYPE(uint64_t addr) \ +{ \ + return *(volatile TYPE##_t *)bdk_phys_to_ptr(addr); \ +} + +/* The following defines 8 functions for writing to a 64bit address. Each + takes two arguments, the address and the value to write. + bdk_write64_int64 bdk_write64_uint64 + bdk_write64_int32 bdk_write64_uint32 + bdk_write64_int16 bdk_write64_uint16 + bdk_write64_int8 bdk_write64_uint8 */ +BDK_BUILD_WRITE64(int64) +BDK_BUILD_WRITE64(int32) +BDK_BUILD_WRITE64(int16) +BDK_BUILD_WRITE64(int8) +BDK_BUILD_WRITE64(uint64) +BDK_BUILD_WRITE64(uint32) +BDK_BUILD_WRITE64(uint16) +BDK_BUILD_WRITE64(uint8) + +/* The following defines 8 functions for reading from a 64bit address. Each + takes the address as the only argument + bdk_read64_int64 bdk_read64_uint64 + bdk_read64_int32 bdk_read64_uint32 + bdk_read64_int16 bdk_read64_uint16 + bdk_read64_int8 bdk_read64_uint8 */ +BDK_BUILD_READ64(int64) +BDK_BUILD_READ64(int32) +BDK_BUILD_READ64(int16) +BDK_BUILD_READ64(int8) +BDK_BUILD_READ64(uint64) +BDK_BUILD_READ64(uint32) +BDK_BUILD_READ64(uint16) +BDK_BUILD_READ64(uint8) + + +/** + * Returns the number of bits set in the provided value. + * Simple wrapper for POP instruction. + * + * @param val 32 bit value to count set bits in + * + * @return Number of bits set + */ +static inline uint32_t bdk_pop(uint32_t val) +{ + return __builtin_popcount(val); +} + + +/** + * Returns the number of bits set in the provided value. + * Simple wrapper for DPOP instruction. + * + * @param val 64 bit value to count set bits in + * + * @return Number of bits set + */ +static inline int bdk_dpop(uint64_t val) +{ + return __builtin_popcountl(val); +} + |