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Limit the duration we wait for reads in BF1 based on time already elapsed to account for other delays such as work restart messages or out of work.

nfactor-troky
Con Kolivas 11 years ago
parent
commit
44b9cf50e3
  1. 16
      driver-bitfury.c
  2. 1
      driver-bitfury.h
  3. 6
      util.c
  4. 1
      util.h

16
driver-bitfury.c

@ -189,8 +189,10 @@ static int64_t bitfury_scanhash(struct thr_info *thr, struct work *work, @@ -189,8 +189,10 @@ static int64_t bitfury_scanhash(struct thr_info *thr, struct work *work,
{
struct cgpu_info *bitfury = thr->cgpu;
struct bitfury_info *info = bitfury->device_data;
struct timeval tv_now;
int amount, i;
char buf[45];
int ms_diff;
buf[0] = 'W';
memcpy(buf + 1, work->midstate, 32);
@ -199,14 +201,23 @@ static int64_t bitfury_scanhash(struct thr_info *thr, struct work *work, @@ -199,14 +201,23 @@ static int64_t bitfury_scanhash(struct thr_info *thr, struct work *work,
/* New results may spill out from the latest work, making us drop out
* too early so read whatever we get for the first half nonce and then
* look for the results to prev work. */
usb_read_timeout(bitfury, info->buf, 512, &amount, 600, C_BF1_GETRES);
cgtime(&tv_now);
ms_diff = 600 - ms_tdiff(&tv_now, &info->tv_start);
if (ms_diff > 0) {
usb_read_timeout(bitfury, info->buf, 512, &amount, ms_diff, C_BF1_GETRES);
info->tot += amount;
}
if (unlikely(thr->work_restart))
goto cascade;
/* Now look for the bulk of the previous work results, they will come
* in a batch following the first data. */
usb_read_once_timeout(bitfury, info->buf + info->tot, 7, &amount, 1000, C_BF1_GETRES);
cgtime(&tv_now);
ms_diff = BF1WAIT - ms_tdiff(&tv_now, &info->tv_start);
if (unlikely(ms_diff < 10))
ms_diff = 10;
usb_read_once_timeout(bitfury, info->buf + info->tot, 7, &amount, ms_diff, C_BF1_GETRES);
info->tot += amount;
while (amount) {
usb_read_once_timeout(bitfury, info->buf + info->tot, 512, &amount, 10, C_BF1_GETRES);
@ -218,6 +229,7 @@ static int64_t bitfury_scanhash(struct thr_info *thr, struct work *work, @@ -218,6 +229,7 @@ static int64_t bitfury_scanhash(struct thr_info *thr, struct work *work,
/* Send work */
usb_write(bitfury, buf, 45, &amount, C_BF1_REQWORK);
cgtime(&info->tv_start);
/* Get response acknowledging work */
usb_read(bitfury, buf, 7, &amount, C_BF1_GETWORK);

1
driver-bitfury.h

@ -23,6 +23,7 @@ struct bitfury_info { @@ -23,6 +23,7 @@ struct bitfury_info {
char buf[512];
int tot;
int nonces;
struct timeval tv_start;
};
#endif /* BITFURY_H */

6
util.c

@ -1074,6 +1074,12 @@ double us_tdiff(struct timeval *end, struct timeval *start) @@ -1074,6 +1074,12 @@ double us_tdiff(struct timeval *end, struct timeval *start)
return end->tv_sec * 1000000 + end->tv_usec - start->tv_sec * 1000000 - start->tv_usec;
}
/* Returns the milliseconds difference between end and start times */
int ms_tdiff(struct timeval *end, struct timeval *start)
{
return end->tv_sec * 1000 + end->tv_usec / 1000 - start->tv_sec * 1000 - start->tv_usec / 1000;
}
/* Returns the seconds difference between end and start times as a double */
double tdiff(struct timeval *end, struct timeval *start)
{

1
util.h

@ -98,6 +98,7 @@ void cgsleep_us_r(cgtimer_t *ts_start, int64_t us); @@ -98,6 +98,7 @@ void cgsleep_us_r(cgtimer_t *ts_start, int64_t us);
int cgtimer_to_ms(cgtimer_t *cgt);
void cgtimer_sub(cgtimer_t *a, cgtimer_t *b, cgtimer_t *res);
double us_tdiff(struct timeval *end, struct timeval *start);
int ms_tdiff(struct timeval *end, struct timeval *start);
double tdiff(struct timeval *end, struct timeval *start);
bool stratum_send(struct pool *pool, char *s, ssize_t len);
bool sock_full(struct pool *pool);

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