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Code Issues Releases Wiki Activity

Do a simple usb_read_once for the avalon result from a reset command.

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This commit is contained in:
Con Kolivas 2013-05-27 17:28:49 +10:00
parent f1ffe9860b
commit b73ab48814
1 changed files with 8 additions and 38 deletions
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46
driver-avalon.c
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@ -233,39 +233,6 @@ static bool avalon_decode_nonce(struct thr_info *thr, struct cgpu_info *avalon,
return submit_nonce(thr, work, nonce);
}
static int avalon_read(struct cgpu_info *avalon, char *buf, ssize_t len)
{
ssize_t aread = 0;
int amount, err, offset, cp;
char readbuf[AVALON_FTDI_READSIZE];
avalon_wait_ready(avalon);
err = usb_read_once_timeout(avalon, readbuf, len, &amount,
AVALON_READ_TIMEOUT, C_AVALON_READ);
if (err && err != LIBUSB_ERROR_TIMEOUT) {
applog(LOG_WARNING, "%s%i: Get avalon read got err %d",
avalon->drv->name, avalon->device_id, err);
nmsleep(AVALON_READ_TIMEOUT);
return 0;
}
if (amount < 3)
return 0;
offset = 2;
do {
cp = amount - 2;
if (cp > 62)
cp = 62;
memcpy(&buf[aread], readbuf, cp);
aread += cp;
amount -= cp + 2;
offset += 64;
} while (amount > 2);
return aread;
}
/* Wait until the ftdi chip returns a CTS saying we can send more data. The
* status is updated every 40ms. */
static void wait_avalon_ready(struct cgpu_info *avalon)
@ -278,9 +245,9 @@ static void wait_avalon_ready(struct cgpu_info *avalon)
static int avalon_reset(struct cgpu_info *avalon, bool initial)
{
struct avalon_result ar;
int ret, i, spare, err;
struct avalon_task at;
uint8_t *buf, *tmp;
int ret, i, spare;
struct timespec p;
/* Send reset, then check for result */
@ -303,8 +270,11 @@ static int avalon_reset(struct cgpu_info *avalon, bool initial)
return 0;
}
ret = avalon_read(avalon, (char *)&ar, AVALON_READ_SIZE);
if (unlikely(ret == AVA_GETS_ERROR))
err = usb_read_once(avalon, (char *)&ar, AVALON_READ_SIZE, &ret,
C_AVALON_READ);
applog(LOG_DEBUG, "%s%i: Get avalon read got err %d",
avalon->drv->name, avalon->device_id, err);
if (unlikely(err))
return -1;
/* What do these sleeps do?? */
@ -314,8 +284,8 @@ static int avalon_reset(struct cgpu_info *avalon, bool initial)
/* Look for the first occurrence of 0xAA, the reset response should be:
* AA 55 AA 55 00 00 00 00 00 00 */
spare = AVALON_READ_SIZE - 10;
tmp = (uint8_t *)&ar;
spare = ret - 10;
buf = tmp = (uint8_t *)&ar;
if (opt_debug) {
applog(LOG_DEBUG, "AVA%d reset: get:", avalon->device_id);
hexdump(tmp, AVALON_READ_SIZE);