bfgminer/driver-bitfury.c

/*
 * Copyright 2013 bitfury
 * Copyright 2013 legkodymov
 *
 * 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
 * AUTHORS OR COPYRIGHT HOLDERS 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.
 */

#include "config.h"

#include "miner.h"
#include <unistd.h>
#include <sha2.h>

#include "fpgautils.h"
#include "libbitfury.h"
#include "util.h"
#include "spidevc.h"

#define GOLDEN_BACKLOG 5

struct device_drv bitfury_drv;

// Forward declarations
static bool bitfury_prepare(struct thr_info *thr);

static
int bitfury_autodetect()
{
	RUNONCE(0);
	
	int chip_n;
	struct cgpu_info *bitfury_info;
	applog(LOG_INFO, "INFO: bitfury_detect");
	spi_init();
	if (!sys_spi)
		return 0;
	chip_n = libbitfury_detectChips(sys_spi);
	if (!chip_n) {
		applog(LOG_WARNING, "No Bitfury chips detected!");
		return 0;
	} else {
		applog(LOG_WARNING, "BITFURY: %d chips detected!", chip_n);
	}

	bitfury_info = calloc(1, sizeof(struct cgpu_info));
	bitfury_info->drv = &bitfury_drv;
	bitfury_info->threads = 1;
	bitfury_info->procs = chip_n;
	add_cgpu(bitfury_info);
	
	return 1;
}

static void bitfury_detect(void)
{
	noserial_detect_manual(&bitfury_drv, bitfury_autodetect);
}


static
bool bitfury_init(struct thr_info *thr)
{
	struct cgpu_info *proc;
	struct bitfury_device *bitfury;
	int i = 0;
	
	for (proc = thr->cgpu; proc; proc = proc->next_proc)
	{
		bitfury = proc->device_data = malloc(sizeof(struct bitfury_device));
		*bitfury = (struct bitfury_device){
			.spi = sys_spi,
			.chip = i++,
		};
	}
	return true;
}

int64_t bitfury_scanHash(struct thr_info *thr)
{
	struct cgpu_info * const cgpu = thr->cgpu;
	struct cgpu_info *proc;
	struct thr_info *pthr;
	struct bitfury_device *bitfury;

	for (proc = cgpu; proc; proc = proc->next_proc)
	{
		pthr = proc->thr[0];
		bitfury = proc->device_data;
		
		if(!bitfury->work) {
			bitfury->work = get_queued(thr->cgpu);
			if (bitfury->work == NULL)
				return 0;
			work_to_payload(&bitfury->payload, bitfury->work);
		}
		
		payload_to_atrvec(bitfury->atrvec, &bitfury->payload);
		libbitfury_sendHashData1(bitfury, true);
		
		if (bitfury->job_switched) {
			int i,j;
			unsigned int * const res = bitfury->results;
			struct work * const owork = bitfury->owork;
			i = bitfury->results_n;
			for (j = i - 1; j >= 0; j--) {
				if (owork) {
					submit_nonce(pthr, owork, bswap_32(res[j]));
				}
			}

			if (owork)
				work_completed(cgpu, owork);

			bitfury->owork = bitfury->work;
			bitfury->work = NULL;
			hashes_done2(pthr, 0x100000000, NULL);
		}
	}
	return 0;
}

static bool bitfury_prepare(struct thr_info *thr)
{
	struct cgpu_info *cgpu = thr->cgpu;

	get_now_datestamp(cgpu->init, sizeof(cgpu->init));

	applog(LOG_INFO, "INFO bitfury_prepare");
	return true;
}

static void bitfury_shutdown(struct thr_info *thr)
{
	applog(LOG_INFO, "INFO bitfury_shutdown");
}

struct device_drv bitfury_drv = {
	.dname = "bitfury",
	.name = "BFY",
	.drv_detect = bitfury_detect,
	.thread_prepare = bitfury_prepare,
	.thread_init = bitfury_init,
	.scanwork = bitfury_scanHash,
	.thread_shutdown = bitfury_shutdown,
	.minerloop = hash_queued_work,
};