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Provide basic infrastructure for sending an arbitrary frame on hashfast.

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This commit is contained in:
Con Kolivas 2013-09-21 17:44:48 +10:00
parent 62f6fefb12
commit 489722a62e
1 changed files with 35 additions and 0 deletions
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35
driver-hashfast.c
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@ -122,6 +122,41 @@ static const struct hf_cmd hf_cmds[] = {
{OP_CLOCKGATE, "OP_CLOCKGATE", C_HF_CLOCKGATE} {OP_CLOCKGATE, "OP_CLOCKGATE", C_HF_CLOCKGATE}
}; };
/* Send an arbitrary frame, consisting of an 8 byte header and an optional
* packet body. */
static int __maybe_unused hashfast_send_frame(struct cgpu_info *hashfast, uint8_t opcode,
uint8_t chip, uint8_t core, uint16_t hdata,
uint8_t *data, int len)
{
int tx_length, ret, amount, id = hashfast->device_id;
uint8_t packet[256];
struct hf_header *p = (struct hf_header *)packet;
p->preamble = HF_PREAMBLE;
p->operation_code = opcode;
p->chip_address = chip;
p->core_address = core;
p->hdata = htole16(hdata);
p->data_length = len / 4;
p->crc8 = hf_crc8(packet);
tx_length = sizeof(struct hf_header);
if (len) {
memcpy(&packet[sizeof(struct hf_header)], data, len);
hf_crc32(&packet[sizeof(struct hf_header)], len, 1);
tx_length += len + 4;
}
ret = usb_write(hashfast, (char *)packet, tx_length, &amount,
hf_cmds[opcode].usb_cmd);
if (ret < 0 || amount != tx_length) {
applog(LOG_ERR, "HF%d: hashfast_send_frame: USB Send error, ret %d amount %d vs. tx_length %d",
id, ret, amount, tx_length);
return 1;
}
return 0;
}
static int hashfast_reset(struct cgpu_info __maybe_unused *hashfast) static int hashfast_reset(struct cgpu_info __maybe_unused *hashfast)
{ {
return 0; return 0;