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Remove now unused crc32 code from hashfast driver.

nfactor-troky
Con Kolivas 11 years ago
parent
commit
6e2d12e14a
  1. 56
      driver-hashfast.c

56
driver-hashfast.c

@ -24,7 +24,6 @@
#define DI8 0x07 #define DI8 0x07
static unsigned char crc8_table[256]; /* CRC-8 table */ static unsigned char crc8_table[256]; /* CRC-8 table */
static uint32_t crc32_table[256]; /* CRC-32 table */
void hf_init_crc8(void) void hf_init_crc8(void)
{ {
@ -51,47 +50,6 @@ static unsigned char __maybe_unused hf_crc8(unsigned char *h)
return crc; return crc;
} }
#define DI32 0x04c11db7L
void hf_init_crc32(void)
{
uint32_t i, j;
uint32_t crc;
for (i = 0; i < 256; i++){
crc = i << 24;
for (j = 0; j < 8; j++) {
if (crc & 0x80000000L)
crc = (crc << 1) ^ DI32;
else
crc = (crc << 1);
}
crc32_table[i] = crc;
}
}
static uint32_t __maybe_unused hf_crc32(unsigned char *p, int len, int plug_in)
{
uint32_t crc = 0xffffffffU, crc_sav;
uint32_t i;
while (len--) {
i = ((crc >> 24) ^ *p++) & 0xff;
crc = (crc << 8) ^ crc32_table[i];
}
crc_sav = crc;
applog(LOG_DEBUG, "hf_crc32: crc is 0x%08x", crc);
if (plug_in) {
for (i = 0; i < 4; i++, crc >>= 8)
*p++ = crc & 0xff;
}
return crc_sav;
}
static hf_info_t **hashfast_infos; static hf_info_t **hashfast_infos;
struct hf_cmd { struct hf_cmd {
@ -140,12 +98,12 @@ static int __maybe_unused hashfast_send_frame(struct cgpu_info *hashfast, uint8_
p->hdata = htole16(hdata); p->hdata = htole16(hdata);
p->data_length = len / 4; p->data_length = len / 4;
p->crc8 = hf_crc8(packet); p->crc8 = hf_crc8(packet);
tx_length = sizeof(struct hf_header);
if (len) { if (len)
memcpy(&packet[sizeof(struct hf_header)], data, len); memcpy(&packet[sizeof(struct hf_header)], data, len);
hf_crc32(&packet[sizeof(struct hf_header)], len, 1); tx_length = sizeof(struct hf_header) + len;
tx_length += len + 4;
} tx_length = sizeof(struct hf_header);
ret = usb_write(hashfast, (char *)packet, tx_length, &amount, ret = usb_write(hashfast, (char *)packet, tx_length, &amount,
hf_cmds[opcode].usb_cmd); hf_cmds[opcode].usb_cmd);
@ -295,10 +253,8 @@ static bool hashfast_detect_one_usb(libusb_device *dev, struct usb_find_devices
static void hashfast_detect(bool hotplug) static void hashfast_detect(bool hotplug)
{ {
/* Set up the CRC tables only once. */ /* Set up the CRC tables only once. */
if (!hotplug) { if (!hotplug)
hf_init_crc8(); hf_init_crc8();
hf_init_crc32();
}
usb_detect(&hashfast_drv, hashfast_detect_one_usb); usb_detect(&hashfast_drv, hashfast_detect_one_usb);
} }

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