Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
David Daney | 196 | 100.00% | 2 | 100.00% |
Total | 196 | 2 |
/* * This file is subject to the terms and conditions of the GNU General Public * License. See the file "COPYING" in the main directory of this archive * for more details. * * Copyright (c) 2016 Cavium Inc. (support@cavium.com). * */ /* * Module to support operations on bitmap of cores. Coremask can be used to * select a specific core, a group of cores, or all available cores, for * initialization and differentiation of roles within a single shared binary * executable image. * * The core numbers used in this file are the same value as what is found in * the COP0_EBASE register and the rdhwr 0 instruction. * * For the CN78XX and other multi-node environments the core numbers are not * contiguous. The core numbers for the CN78XX are as follows: * * Node 0: Cores 0 - 47 * Node 1: Cores 128 - 175 * Node 2: Cores 256 - 303 * Node 3: Cores 384 - 431 * */ #ifndef __CVMX_COREMASK_H__ #define __CVMX_COREMASK_H__ #define CVMX_MIPS_MAX_CORES 1024 /* bits per holder */ #define CVMX_COREMASK_ELTSZ 64 /* cvmx_coremask_t's size in u64 */ #define CVMX_COREMASK_BMPSZ (CVMX_MIPS_MAX_CORES / CVMX_COREMASK_ELTSZ) /* cvmx_coremask_t */ struct cvmx_coremask { u64 coremask_bitmap[CVMX_COREMASK_BMPSZ]; }; /* * Is ``core'' set in the coremask? */ static inline bool cvmx_coremask_is_core_set(const struct cvmx_coremask *pcm, int core) { int n, i; n = core % CVMX_COREMASK_ELTSZ; i = core / CVMX_COREMASK_ELTSZ; return (pcm->coremask_bitmap[i] & ((u64)1 << n)) != 0; } /* * Make a copy of a coremask */ static inline void cvmx_coremask_copy(struct cvmx_coremask *dest, const struct cvmx_coremask *src) { memcpy(dest, src, sizeof(*dest)); } /* * Set the lower 64-bit of the coremask. */ static inline void cvmx_coremask_set64(struct cvmx_coremask *pcm, uint64_t coremask_64) { pcm->coremask_bitmap[0] = coremask_64; } /* * Clear ``core'' from the coremask. */ static inline void cvmx_coremask_clear_core(struct cvmx_coremask *pcm, int core) { int n, i; n = core % CVMX_COREMASK_ELTSZ; i = core / CVMX_COREMASK_ELTSZ; pcm->coremask_bitmap[i] &= ~(1ull << n); } #endif /* __CVMX_COREMASK_H__ */
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