Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Nicholas Kazlauskas | 462 | 84.31% | 2 | 66.67% |
Yongqiang Sun | 86 | 15.69% | 1 | 33.33% |
Total | 548 | 3 |
/* * Copyright 2019 Advanced Micro Devices, Inc. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * OTHER DEALINGS IN THE SOFTWARE. * * Authors: AMD * */ #ifndef _DMUB_RB_H_ #define _DMUB_RB_H_ #include "dmub_types.h" #include "dmub_cmd.h" #if defined(__cplusplus) extern "C" { #endif struct dmub_cmd_header; struct dmub_rb_init_params { void *ctx; void *base_address; uint32_t capacity; }; struct dmub_rb { void *base_address; uint32_t data_count; uint32_t rptr; uint32_t wrpt; uint32_t capacity; void *ctx; void *dmub; }; static inline bool dmub_rb_empty(struct dmub_rb *rb) { return (rb->wrpt == rb->rptr); } static inline bool dmub_rb_full(struct dmub_rb *rb) { uint32_t data_count; if (rb->wrpt >= rb->rptr) data_count = rb->wrpt - rb->rptr; else data_count = rb->capacity - (rb->rptr - rb->wrpt); return (data_count == (rb->capacity - DMUB_RB_CMD_SIZE)); } static inline bool dmub_rb_push_front(struct dmub_rb *rb, const struct dmub_cmd_header *cmd) { uint64_t volatile *dst = (uint64_t volatile *)(rb->base_address) + rb->wrpt / sizeof(uint64_t); const uint64_t *src = (const uint64_t *)cmd; int i; if (dmub_rb_full(rb)) return false; // copying data for (i = 0; i < DMUB_RB_CMD_SIZE / sizeof(uint64_t); i++) *dst++ = *src++; rb->wrpt += DMUB_RB_CMD_SIZE; if (rb->wrpt >= rb->capacity) rb->wrpt %= rb->capacity; return true; } static inline bool dmub_rb_front(struct dmub_rb *rb, struct dmub_cmd_header *cmd) { uint8_t *rd_ptr = (uint8_t *)rb->base_address + rb->rptr; if (dmub_rb_empty(rb)) return false; dmub_memcpy(cmd, rd_ptr, DMUB_RB_CMD_SIZE); return true; } static inline bool dmub_rb_pop_front(struct dmub_rb *rb) { if (dmub_rb_empty(rb)) return false; rb->rptr += DMUB_RB_CMD_SIZE; if (rb->rptr >= rb->capacity) rb->rptr %= rb->capacity; return true; } static inline void dmub_rb_flush_pending(const struct dmub_rb *rb) { uint32_t rptr = rb->rptr; uint32_t wptr = rb->wrpt; while (rptr != wptr) { uint64_t volatile *data = (uint64_t volatile *)rb->base_address + rptr / sizeof(uint64_t); //uint64_t volatile *p = (uint64_t volatile *)data; uint64_t temp; int i; for (i = 0; i < DMUB_RB_CMD_SIZE / sizeof(uint64_t); i++) temp = *data++; rptr += DMUB_RB_CMD_SIZE; if (rptr >= rb->capacity) rptr %= rb->capacity; } } static inline void dmub_rb_init(struct dmub_rb *rb, struct dmub_rb_init_params *init_params) { rb->base_address = init_params->base_address; rb->capacity = init_params->capacity; rb->rptr = 0; rb->wrpt = 0; } #if defined(__cplusplus) } #endif #endif /* _DMUB_RB_H_ */
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