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Check for nothing but consecutive bad results on avalon and reset the FPGA if it happens.

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This commit is contained in:
Con Kolivas 2013-05-26 21:14:17 +10:00
parent 44736b3012
commit 1ef027c444
1 changed files with 30 additions and 12 deletions
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42
driver-avalon.c
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@ -222,7 +222,7 @@ static int avalon_send_task(int fd, const struct avalon_task *at,
return ret;
}
static void avalon_decode_nonce(struct thr_info *thr, struct cgpu_info *avalon,
static bool avalon_decode_nonce(struct thr_info *thr, struct cgpu_info *avalon,
struct avalon_info *info, struct avalon_result *ar,
struct work *work)
{
@ -232,7 +232,7 @@ static void avalon_decode_nonce(struct thr_info *thr, struct cgpu_info *avalon,
info->matching_work[work->subid]++;
nonce = htole32(ar->nonce);
applog(LOG_DEBUG, "Avalon: nonce = %0x08x", nonce);
submit_nonce(thr, work, nonce);
return submit_nonce(thr, work, nonce);
}
static int avalon_read(int fd, char *buf, ssize_t len)
@ -544,7 +544,8 @@ static struct work *avalon_valid_result(struct cgpu_info *avalon, struct avalon_
static void avalon_update_temps(struct cgpu_info *avalon, struct avalon_info *info,
struct avalon_result *ar);
static void avalon_inc_nvw(struct avalon_info *info, struct thr_info *thr)
static void avalon_inc_nvw(struct cgpu_info *avalon, struct avalon_info *info,
struct thr_info *thr)
{
if (unlikely(info->idle))
return;
@ -555,6 +556,7 @@ static void avalon_inc_nvw(struct avalon_info *info, struct thr_info *thr)
inc_hw_errors(thr);
mutex_lock(&info->lock);
info->no_matching_work++;
avalon->results--;
mutex_unlock(&info->lock);
}
@ -575,15 +577,22 @@ static void avalon_parse_results(struct cgpu_info *avalon, struct avalon_info *i
found = true;
mutex_lock(&info->lock);
if (!(++avalon->results % info->miner_count)) {
gettemp = true;
avalon->results = 0;
if (avalon_decode_nonce(thr, avalon, info, ar, work)) {
mutex_lock(&info->lock);
if (avalon->results < 0)
avalon->results = 0;
if (!(++avalon->results % info->miner_count)) {
gettemp = true;
avalon->results = 0;
}
info->nonces++;
mutex_unlock(&info->lock);
} else {
mutex_lock(&info->lock);
avalon->results--;
mutex_unlock(&info->lock);
}
info->nonces++;
mutex_unlock(&info->lock);
avalon_decode_nonce(thr, avalon, info, ar, work);
if (gettemp)
avalon_update_temps(avalon, info, ar);
break;
@ -596,12 +605,12 @@ static void avalon_parse_results(struct cgpu_info *avalon, struct avalon_info *i
* work result. */
if (spare < (int)AVALON_READ_SIZE)
return;
avalon_inc_nvw(info, thr);
avalon_inc_nvw(avalon, info, thr);
} else {
spare = AVALON_READ_SIZE + i;
if (i) {
if (i >= (int)AVALON_READ_SIZE)
avalon_inc_nvw(info, thr);
avalon_inc_nvw(avalon, info, thr);
else
applog(LOG_WARNING, "Avalon: Discarding %d bytes from buffer", i);
}
@ -636,6 +645,15 @@ static void *avalon_get_results(void *userdata)
if (offset >= (int)AVALON_READ_SIZE)
avalon_parse_results(avalon, info, thr, readbuf, &offset);
/* Check for nothing but consecutive bad results and reset the
* FPGA if necessary */
if (unlikely(avalon->results < -info->miner_count)) {
applog(LOG_ERR, "AVA%d: %d invalid consecutive results, resetting",
avalon->device_id, -avalon->results);
avalon_reset(avalon, fd);
avalon->results = 0;
}
if (unlikely(offset + rsize >= AVALON_READBUF_SIZE)) {
/* This should never happen */
applog(LOG_ERR, "Avalon readbuf overflow, resetting buffer");