thodg/cgminer/driver-avalon.h

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• Hash : 7c683cf2
  Author :
  Date : 2013-06-21T10:59:55
  

  Use low latency usb transfers on the avalon, sleeping up to half a buffer's worth only if no data is returning to increase hashrate, abolish lost work and decrease CPU.

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• driver-avalon.h

• /*
   * Copyright 2013 Avalon project
   * Copyright 2013 Con Kolivas <kernel@kolivas.org>
   *
   * This program is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License as published by the Free
   * Software Foundation; either version 3 of the License, or (at your option)
   * any later version.  See COPYING for more details.
   */
  
  #ifndef AVALON_H
  #define AVALON_H
  
  #ifdef USE_AVALON
  
  #include "util.h"
  
  #define AVALON_RESET_FAULT_DECISECONDS 1
  #define AVALON_MINER_THREADS 1
  
  #define AVALON_IO_SPEED		115200
  #define AVALON_HASH_TIME_FACTOR	((float)1.67/0x32)
  #define AVALON_RESET_PITCH	(300*1000*1000)
  
  #define AVALON_FAN_FACTOR 120
  #define AVALON_DEFAULT_FAN_MAX_PWM 0xA0 /* 100% */
  #define AVALON_DEFAULT_FAN_MIN_PWM 0x20 /*  20% */
  
  #define AVALON_DEFAULT_TIMEOUT 0x2D
  #define AVALON_DEFAULT_FREQUENCY 282
  #define AVALON_DEFAULT_MINER_NUM 0x20
  #define AVALON_DEFAULT_ASIC_NUM 0xA
  
  #define AVALON_FTDI_READSIZE 510
  #define AVALON_READBUF_SIZE 8192
  #define AVALON_RESET_TIMEOUT 100
  #define AVALON_READ_TIMEOUT 18 /* Enough to only half fill the buffer */
  #define AVALON_LATENCY 1
  
  struct avalon_task {
  	uint8_t reset		:1;
  	uint8_t flush_fifo	:1;
  	uint8_t fan_eft		:1;
  	uint8_t timer_eft	:1;
  	uint8_t asic_num	:4;
  	uint8_t fan_pwm_data;
  	uint8_t timeout_data;
  	uint8_t miner_num;
  
  	uint8_t nonce_elf		:1;
  	uint8_t gate_miner_elf		:1;
  	uint8_t asic_pll		:1;
  	uint8_t gate_miner		:1;
  	uint8_t _pad0			:4;
  	uint8_t _pad1[3];
  	uint32_t _pad2;
  
  	uint8_t midstate[32];
  	uint8_t data[12];
  } __attribute__((packed, aligned(4)));
  
  struct avalon_result {
  	uint32_t nonce;
  	uint8_t data[12];
  	uint8_t midstate[32];
  
  	uint8_t fan0;
  	uint8_t fan1;
  	uint8_t fan2;
  	uint8_t temp0;
  	uint8_t temp1;
  	uint8_t temp2;
  	uint8_t _pad0[2];
  
  	uint16_t fifo_wp;
  	uint16_t fifo_rp;
  	uint8_t chip_num;
  	uint8_t pwm_data;
  	uint8_t timeout;
  	uint8_t miner_num;
  } __attribute__((packed, aligned(4)));
  
  struct avalon_info {
  	int baud;
  	int miner_count;
  	int asic_count;
  	int timeout;
  
  	int fan0;
  	int fan1;
  	int fan2;
  
  	int temp0;
  	int temp1;
  	int temp2;
  	int temp_max;
  	int temp_history_count;
  	int temp_history_index;
  	int temp_sum;
  	int temp_old;
  	int fan_pwm;
  
  	int no_matching_work;
  	int matching_work[AVALON_DEFAULT_MINER_NUM];
  
  	int frequency;
  
  	struct thr_info *thr;
  	pthread_t read_thr;
  	pthread_t write_thr;
  	pthread_mutex_t lock;
  	pthread_mutex_t qlock;
  	pthread_cond_t qcond;
  	cgsem_t read_sem;
  	cgsem_t write_sem;
  	int nonces;
  
  	bool idle;
  	bool reset;
  };
  
  #define AVALON_WRITE_SIZE (sizeof(struct avalon_task))
  #define AVALON_READ_SIZE (sizeof(struct avalon_result))
  #define AVALON_ARRAY_SIZE 3
  
  #define AVA_GETS_ERROR -1
  #define AVA_GETS_OK 0
  
  #define AVA_SEND_ERROR -1
  #define AVA_SEND_OK 0
  
  #define avalon_buffer_full(avalon) !usb_ftdi_cts(avalon)
  
  #define AVALON_READ_TIME(baud) ((double)AVALON_READ_SIZE * (double)8.0 / (double)(baud))
  #define ASSERT1(condition) __maybe_unused static char sizeof_uint32_t_must_be_4[(condition)?1:-1]
  ASSERT1(sizeof(uint32_t) == 4);
  
  extern struct avalon_info **avalon_info;
  
  #endif /* USE_AVALON */
  #endif	/* AVALON_H */
  

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