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@@ -14,7 +14,7 @@
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#define _HF_PROTOCOL_H_
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#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
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- #error "This header uses bit fields and has byte ordering assumptions suitable only for Little Endian platforms"
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+#error "This header uses bit fields and has byte ordering assumptions suitable only for Little Endian platforms"
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#endif
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#define HF_PREAMBLE (uint8_t) 0xaa
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@@ -43,122 +43,122 @@
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// Generic header
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struct hf_header {
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- uint8_t preamble; // Always 0xaa
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- uint8_t operation_code;
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- uint8_t chip_address;
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- uint8_t core_address;
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- uint16_t hdata; // Header specific data
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- uint8_t data_length; // .. of data frame to follow, in 4 byte blocks, 0=no data
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- uint8_t crc8; // Computed across bytes 1-6 inclusive
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- } __attribute__((packed,aligned(4))); // 8 bytes total
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+ uint8_t preamble; // Always 0xaa
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+ uint8_t operation_code;
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+ uint8_t chip_address;
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+ uint8_t core_address;
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+ uint16_t hdata; // Header specific data
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+ uint8_t data_length; // .. of data frame to follow, in 4 byte blocks, 0=no data
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+ uint8_t crc8; // Computed across bytes 1-6 inclusive
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+} __attribute__((packed,aligned(4))); // 8 bytes total
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// Header specific to OP_PLL_CONFIG
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struct hf_pll_config {
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- uint8_t preamble;
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- uint8_t operation_code;
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- uint8_t chip_address;
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+ uint8_t preamble;
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+ uint8_t operation_code;
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+ uint8_t chip_address;
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- uint8_t pll_divr:6;
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- uint8_t pll_bypass:1;
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- uint8_t pll_reset:1;
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+ uint8_t pll_divr:6;
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+ uint8_t pll_bypass:1;
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+ uint8_t pll_reset:1;
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- uint16_t pll_divf:8;
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- uint16_t spare1:1; // Must always be 0
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- uint16_t pll_divq:3;
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- uint16_t pll_range:3;
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- uint16_t pll_fse:1; // Must always be 1
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+ uint16_t pll_divf:8;
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+ uint16_t spare1:1; // Must always be 0
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+ uint16_t pll_divq:3;
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+ uint16_t pll_range:3;
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+ uint16_t pll_fse:1; // Must always be 1
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- uint8_t data_length; // Always 0
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- uint8_t crc8; // Computed across bytes 1-6 inclusive
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- } __attribute__((packed,aligned(4))); // 8 bytes total
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+ uint8_t data_length; // Always 0
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+ uint8_t crc8; // Computed across bytes 1-6 inclusive
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+} __attribute__((packed,aligned(4))); // 8 bytes total
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// OP_HASH serial data
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struct hf_hash_serial {
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- uint8_t midstate[32]; // Computed from first half of block header
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- uint8_t merkle_residual[4]; // From block header
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- uint32_t timestamp; // From block header
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- uint32_t bits; // Actual difficulty target for block header
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- uint32_t starting_nonce; // Usually set to 0
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- uint32_t nonce_loops; // How many nonces to search, or 0 for 2^32
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- uint16_t ntime_loops:12; // How many times to roll timestamp, or 0
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- uint16_t spare1:4;
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- uint8_t search_difficulty; // Search difficulty to use, number of leading '0' bits required
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- uint8_t option;
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- uint32_t group:8;
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- uint32_t spare3:24;
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- uint32_t crc32; // Computed across all preceding data fields
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- } __attribute__((packed,aligned(4))); // 64 bytes total, including CRC
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+ uint8_t midstate[32]; // Computed from first half of block header
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+ uint8_t merkle_residual[4]; // From block header
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+ uint32_t timestamp; // From block header
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+ uint32_t bits; // Actual difficulty target for block header
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+ uint32_t starting_nonce; // Usually set to 0
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+ uint32_t nonce_loops; // How many nonces to search, or 0 for 2^32
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+ uint16_t ntime_loops:12; // How many times to roll timestamp, or 0
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+ uint16_t spare1:4;
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+ uint8_t search_difficulty; // Search difficulty to use, number of leading '0' bits required
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+ uint8_t option;
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+ uint32_t group:8;
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+ uint32_t spare3:24;
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+ uint32_t crc32; // Computed across all preceding data fields
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+} __attribute__((packed,aligned(4))); // 64 bytes total, including CRC
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// OP_HASH usb data - squashed so header+data = 64 bytes
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struct hf_hash_usb {
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- uint8_t midstate[32]; // Computed from first half of block header
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- uint8_t merkle_residual[4]; // From block header
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- uint32_t timestamp; // From block header
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- uint32_t bits; // Actual difficulty target for block header
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- uint32_t starting_nonce; // Usually set to 0
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- uint32_t nonce_loops; // How many nonces to search, or 0 for 2^32
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- uint16_t ntime_loops:12; // How many times to roll timestamp, or 0
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- uint16_t spare1:4;
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- uint8_t search_difficulty; // Search difficulty to use, number of leading '0' bits required
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- uint8_t group; // Non-zero for valid group
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- } __attribute__((packed,aligned(4))); // 64 bytes total, including CRC
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+ uint8_t midstate[32]; // Computed from first half of block header
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+ uint8_t merkle_residual[4]; // From block header
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+ uint32_t timestamp; // From block header
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+ uint32_t bits; // Actual difficulty target for block header
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+ uint32_t starting_nonce; // Usually set to 0
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+ uint32_t nonce_loops; // How many nonces to search, or 0 for 2^32
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+ uint16_t ntime_loops:12; // How many times to roll timestamp, or 0
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+ uint16_t spare1:4;
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+ uint8_t search_difficulty; // Search difficulty to use, number of leading '0' bits required
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+ uint8_t group; // Non-zero for valid group
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+} __attribute__((packed,aligned(4))); // 64 bytes total, including CRC
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// OP_NONCE data
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struct hf_candidate_nonce {
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- uint32_t nonce; // Candidate nonce
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- uint16_t sequence; // Sequence number from corresponding OP_HASH
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- uint16_t ntime:12; // ntime offset, if ntime roll occurred
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- uint16_t search:1; // Search forward next 128 nonces to find solution
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- uint16_t spare:3;
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- } __attribute__((packed,aligned(4)));
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+ uint32_t nonce; // Candidate nonce
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+ uint16_t sequence; // Sequence number from corresponding OP_HASH
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+ uint16_t ntime:12; // ntime offset, if ntime roll occurred
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+ uint16_t search:1; // Search forward next 128 nonces to find solution
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+ uint16_t spare:3;
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+} __attribute__((packed,aligned(4)));
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// OP_CONFIG data
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struct hf_config_data {
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- uint16_t status_period:11; // Periodic status time, msec
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- uint16_t enable_periodic_status:1; // Send periodic status
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- uint16_t send_status_on_core_idle:1; // Schedule status whenever core goes idle
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- uint16_t send_status_on_pending_empty:1; // Schedule status whenever core pending goes idle
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- uint16_t pwm_active_level:1; // Active level of PWM outputs, if used
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- uint16_t forward_all_privileged_packets:1; // Forward priv pkts -- diagnostic
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- uint8_t status_batch_delay; // Batching delay, time to wait before sending status
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- uint8_t watchdog:7; // Watchdog timeout, seconds
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- uint8_t disable_sensors:1; // Diagnostic
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-
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- uint8_t rx_header_timeout:7; // Header timeout in char times
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- uint8_t rx_ignore_header_crc:1; // Ignore rx header crc's (diagnostic)
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- uint8_t rx_data_timeout:7; // Data timeout in char times / 16
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- uint8_t rx_ignore_data_crc:1; // Ignore rx data crc's (diagnostic)
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- uint8_t stats_interval:7; // Minimum interval to report statistics (seconds)
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- uint8_t stat_diagnostic:1; // Never set this
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- uint8_t measure_interval; // Die temperature measurment interval (msec)
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-
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- uint32_t one_usec:12; // How many LF clocks per usec.
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- uint32_t max_nonces_per_frame:4; // Maximum # of nonces to combine in a single frame
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- uint32_t voltage_sample_points:8; // Bit mask for sample points (up to 5 bits set)
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- uint32_t pwm_phases:2; // phases - 1
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- uint32_t trim:4; // Trim value for temperature measurements
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- uint32_t clock_diagnostic:1; // Never set this
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- uint32_t forward_all_packets:1; // Forward everything - diagnostic.
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-
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- uint16_t pwm_period; // Period of PWM outputs, in reference clock cycles
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- uint16_t pwm_pulse_period; // Initial count, phase 0
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- } __attribute__((packed,aligned(4)));
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+ uint16_t status_period:11; // Periodic status time, msec
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+ uint16_t enable_periodic_status:1; // Send periodic status
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+ uint16_t send_status_on_core_idle:1; // Schedule status whenever core goes idle
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+ uint16_t send_status_on_pending_empty:1; // Schedule status whenever core pending goes idle
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+ uint16_t pwm_active_level:1; // Active level of PWM outputs, if used
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+ uint16_t forward_all_privileged_packets:1; // Forward priv pkts -- diagnostic
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+ uint8_t status_batch_delay; // Batching delay, time to wait before sending status
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+ uint8_t watchdog:7; // Watchdog timeout, seconds
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+ uint8_t disable_sensors:1; // Diagnostic
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+
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+ uint8_t rx_header_timeout:7; // Header timeout in char times
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+ uint8_t rx_ignore_header_crc:1; // Ignore rx header crc's (diagnostic)
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+ uint8_t rx_data_timeout:7; // Data timeout in char times / 16
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+ uint8_t rx_ignore_data_crc:1; // Ignore rx data crc's (diagnostic)
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+ uint8_t stats_interval:7; // Minimum interval to report statistics (seconds)
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+ uint8_t stat_diagnostic:1; // Never set this
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+ uint8_t measure_interval; // Die temperature measurment interval (msec)
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+
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+ uint32_t one_usec:12; // How many LF clocks per usec.
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+ uint32_t max_nonces_per_frame:4; // Maximum # of nonces to combine in a single frame
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+ uint32_t voltage_sample_points:8; // Bit mask for sample points (up to 5 bits set)
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+ uint32_t pwm_phases:2; // phases - 1
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+ uint32_t trim:4; // Trim value for temperature measurements
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+ uint32_t clock_diagnostic:1; // Never set this
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+ uint32_t forward_all_packets:1; // Forward everything - diagnostic.
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+
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+ uint16_t pwm_period; // Period of PWM outputs, in reference clock cycles
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+ uint16_t pwm_pulse_period; // Initial count, phase 0
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+} __attribute__((packed,aligned(4)));
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// OP_GROUP data
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struct hf_group_data {
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- uint16_t nonce_msoffset; // This value << 16 added to starting nonce
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- uint16_t ntime_offset:12; // This value added to timestamp
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- uint16_t spare:4;
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- } __attribute__((packed,aligned(4)));
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+ uint16_t nonce_msoffset; // This value << 16 added to starting nonce
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+ uint16_t ntime_offset:12; // This value added to timestamp
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+ uint16_t spare:4;
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+} __attribute__((packed,aligned(4)));
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// Structure of the monitor fields for G-1, returned in OP_STATUS, core bitmap follows this
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struct hf_g1_monitor {
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- uint16_t die_temperature:12; // Die temperature ADC count
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- uint16_t spare:4; // Spare
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- uint8_t core_voltage[6]; // Core voltage
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- // [0] = main sensor
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- // [1]-[5] = other positions
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- } __attribute__((packed,aligned(4)));
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+ uint16_t die_temperature:12; // Die temperature ADC count
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+ uint16_t spare:4; // Spare
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+ uint8_t core_voltage[6]; // Core voltage
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+ // [0] = main sensor
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+ // [1]-[5] = other positions
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+} __attribute__((packed,aligned(4)));
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// Conversions for the ADC readings from GN on-chip sensors in the above structure
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#define GN_CORE_VOLTAGE(a) ((float)(a)/256*1.2)
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@@ -166,15 +166,15 @@ struct hf_g1_monitor {
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// What comes back in the body of an OP_STATISTICS frame (On die statistics)
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struct hf_statistics {
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- uint8_t rx_header_crc; // Header CRC error's
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- uint8_t rx_body_crc; // Data CRC error's
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- uint8_t rx_header_timeouts; // Header timeouts
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- uint8_t rx_body_timeouts; // Data timeouts
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- uint8_t core_nonce_fifo_full; // Core nonce Q overrun events
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- uint8_t array_nonce_fifo_full; // System nonce Q overrun events
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- uint8_t stats_overrun; // Overrun in statistics reporting
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- uint8_t spare;
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- } __attribute__((packed,aligned(4)));
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+ uint8_t rx_header_crc; // Header CRC error's
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+ uint8_t rx_body_crc; // Data CRC error's
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+ uint8_t rx_header_timeouts; // Header timeouts
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+ uint8_t rx_body_timeouts; // Data timeouts
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+ uint8_t core_nonce_fifo_full; // Core nonce Q overrun events
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+ uint8_t array_nonce_fifo_full; // System nonce Q overrun events
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+ uint8_t stats_overrun; // Overrun in statistics reporting
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+ uint8_t spare;
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+} __attribute__((packed,aligned(4)));
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// The sequence distance between a sent and received sequence number.
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@@ -186,23 +186,23 @@ struct hf_statistics {
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// Convenience header specific to OP_USB_INIT
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struct hf_usb_init_header {
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- uint8_t preamble; // Always 0xaa
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- uint8_t operation_code;
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- uint8_t spare1;
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+ uint8_t preamble; // Always 0xaa
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+ uint8_t operation_code;
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+ uint8_t spare1;
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- uint8_t protocol:3; // Which protocol to use
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- uint8_t user_configuration:1; // Use the following configuration data
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- uint8_t spare2:4;
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+ uint8_t protocol:3; // Which protocol to use
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+ uint8_t user_configuration:1; // Use the following configuration data
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+ uint8_t spare2:4;
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- uint16_t hash_clock:12; // Requested hash clock frequency
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- uint16_t pll_bypass:1; // Force PLL bypass, hash clock = ref clock
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- uint16_t no_asic_initialization:1; // Do not perform automatic ASIC initialization
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- uint16_t do_atspeed_core_tests:1; // Do core tests at speed, return second bitmap
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- uint16_t leave_powered_down:1; // Init USB only, leave device powered down
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+ uint16_t hash_clock:12; // Requested hash clock frequency
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+ uint16_t pll_bypass:1; // Force PLL bypass, hash clock = ref clock
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+ uint16_t no_asic_initialization:1; // Do not perform automatic ASIC initialization
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+ uint16_t do_atspeed_core_tests:1; // Do core tests at speed, return second bitmap
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+ uint16_t leave_powered_down:1; // Init USB only, leave device powered down
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- uint8_t data_length; // .. of data frame to follow, in 4 byte blocks
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- uint8_t crc8; // Computed across bytes 1-6 inclusive
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- } __attribute__((packed,aligned(4))); // 8 bytes total
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+ uint8_t data_length; // .. of data frame to follow, in 4 byte blocks
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+ uint8_t crc8; // Computed across bytes 1-6 inclusive
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+} __attribute__((packed,aligned(4))); // 8 bytes total
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// Values the protocol field in the above structure may take
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#define PROTOCOL_USB_MAPPED_SERIAL 0
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@@ -214,22 +214,22 @@ struct hf_usb_init_header {
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// select only those options desired for modification. Do not use this facility
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// unless you are an expert - loading inconsistent settings will not work.
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struct hf_usb_init_options {
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- uint16_t group_ntime_roll; // Total ntime roll amount per group
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- uint16_t core_ntime_roll; // Total core ntime roll amount
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- } __attribute__((packed,aligned(4)));
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+ uint16_t group_ntime_roll; // Total ntime roll amount per group
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+ uint16_t core_ntime_roll; // Total core ntime roll amount
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+} __attribute__((packed,aligned(4)));
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// Base item returned from device for OP_USB_INIT
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struct hf_usb_init_base {
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- uint16_t firmware_rev; // Firmware revision #
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- uint16_t hardware_rev; // Hardware revision #
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- uint32_t serial_number; // Board serial number
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- uint8_t operation_status; // Reply status for OP_USB_INIT (0 = success)
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- uint8_t extra_status_1; // Extra reply status information, code specific
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- uint8_t extra_status_2; //
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- uint8_t extra_status_3; //
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- uint16_t hash_clockrate; // Actual hash clock rate used (nearest Mhz)
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- uint16_t inflight_target; // Target inflight amount for GWQ protocol
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- } __attribute__((packed,aligned(4)));
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+ uint16_t firmware_rev; // Firmware revision #
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+ uint16_t hardware_rev; // Hardware revision #
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+ uint32_t serial_number; // Board serial number
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+ uint8_t operation_status; // Reply status for OP_USB_INIT (0 = success)
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+ uint8_t extra_status_1; // Extra reply status information, code specific
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+ uint8_t extra_status_2; //
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+ uint8_t extra_status_3; //
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+ uint16_t hash_clockrate; // Actual hash clock rate used (nearest Mhz)
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+ uint16_t inflight_target; // Target inflight amount for GWQ protocol
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+} __attribute__((packed,aligned(4)));
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// The above base item (16 bytes) is followed by the struct hf_config_data (16 bytes) actually
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// used internally (so users may modify non-critical fields by doing subsequent
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@@ -240,13 +240,13 @@ struct hf_usb_init_base {
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// Information in an OP_DIE_STATUS frame. This is for one die - there are four per ASIC.
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// Board level phase current and voltage sensors are likely to disappear in later production models.
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struct hf_g1_die_data {
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- struct hf_g1_monitor die; // Die sensors - 8 bytes
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- uint16_t phase_currents[4]; // Phase currents (0 if unavailable)
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- uint16_t voltage; // Voltage at device boundary (0 if unavailable)
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- uint16_t temperature; // Regulator temp sensor
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- uint16_t tacho; // See documentation
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- uint16_t spare;
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- } __attribute__((packed,aligned(4))); // 24 bytes total
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+ struct hf_g1_monitor die; // Die sensors - 8 bytes
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+ uint16_t phase_currents[4]; // Phase currents (0 if unavailable)
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+ uint16_t voltage; // Voltage at device boundary (0 if unavailable)
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+ uint16_t temperature; // Regulator temp sensor
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+ uint16_t tacho; // See documentation
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+ uint16_t spare;
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+} __attribute__((packed,aligned(4))); // 24 bytes total
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// Conversions for the board/module level sensors
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#define M_VOLTAGE(a) ((float)(a)*19.0734e-6)
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@@ -255,45 +255,45 @@ struct hf_g1_die_data {
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// Information for an OP_GWQ_STATUS frame
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// If sequence_head == sequence_tail, then there is no active work and sequence_head is invalid
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struct hf_gwq_data {
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- uint64_t hash_count; // Add this to host's cumulative hash count
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- uint16_t sequence_head; // The latest, internal, active sequence #
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- uint16_t sequence_tail; // The latest, internal, inactive sequence #
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- } __attribute__((packed,aligned(4)));
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+ uint64_t hash_count; // Add this to host's cumulative hash count
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+ uint16_t sequence_head; // The latest, internal, active sequence #
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+ uint16_t sequence_tail; // The latest, internal, inactive sequence #
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+} __attribute__((packed,aligned(4)));
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// Information for an OP_USB_STATS1 frame - Communication statistics
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struct hf_usb_stats1 {
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- // USB incoming
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- uint16_t usb_rx_preambles;
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- uint16_t usb_rx_receive_byte_errors;
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- uint16_t usb_rx_bad_hcrc;
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-
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- // USB outgoing
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- uint16_t usb_tx_attempts;
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- uint16_t usb_tx_packets;
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- uint16_t usb_tx_timeouts;
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- uint16_t usb_tx_incompletes;
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- uint16_t usb_tx_endpointstalled;
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- uint16_t usb_tx_disconnected;
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- uint16_t usb_tx_suspended;
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-
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- // Internal UART transmit
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- uint16_t uart_tx_queue_dma;
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- uint16_t uart_tx_interrupts;
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-
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- // Internal UART receive
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- uint16_t uart_rx_preamble_ints;
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- uint16_t uart_rx_missed_preamble_ints;
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- uint16_t uart_rx_header_done;
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- uint16_t uart_rx_data_done;
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- uint16_t uart_rx_bad_hcrc;
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- uint16_t uart_rx_bad_dma;
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- uint16_t uart_rx_short_dma;
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- uint16_t uart_rx_buffers_full;
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-
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- uint8_t max_tx_buffers; // Maximum # of send buffers ever used
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- uint8_t max_rx_buffers; // Maximum # of receive buffers ever used
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- } __attribute__((packed,aligned(4)));
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+ // USB incoming
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+ uint16_t usb_rx_preambles;
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+ uint16_t usb_rx_receive_byte_errors;
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+ uint16_t usb_rx_bad_hcrc;
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+
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+ // USB outgoing
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+ uint16_t usb_tx_attempts;
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+ uint16_t usb_tx_packets;
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+ uint16_t usb_tx_timeouts;
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+ uint16_t usb_tx_incompletes;
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+ uint16_t usb_tx_endpointstalled;
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+ uint16_t usb_tx_disconnected;
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+ uint16_t usb_tx_suspended;
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+
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+ // Internal UART transmit
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+ uint16_t uart_tx_queue_dma;
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+ uint16_t uart_tx_interrupts;
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+
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+ // Internal UART receive
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+ uint16_t uart_rx_preamble_ints;
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+ uint16_t uart_rx_missed_preamble_ints;
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+ uint16_t uart_rx_header_done;
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+ uint16_t uart_rx_data_done;
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+ uint16_t uart_rx_bad_hcrc;
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+ uint16_t uart_rx_bad_dma;
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+ uint16_t uart_rx_short_dma;
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+ uint16_t uart_rx_buffers_full;
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+
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+ uint8_t max_tx_buffers; // Maximum # of send buffers ever used
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+ uint8_t max_rx_buffers; // Maximum # of receive buffers ever used
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+} __attribute__((packed,aligned(4)));
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// Values info->device_type can take
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#define HFD_G1 1 // HashFast G-1 GN ASIC
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Con Kolivas