thodg/cgminer/driver-hashfast.c

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• Hash : 49befae6
  Author :
  Date : 2013-10-13T22:25:48
  

  Get remaining data from reset sequence on hashfast driver.

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• driver-hashfast.c

• /*
   * Copyright 2013 Con Kolivas <kernel@kolivas.org>
   * Copyright 2013 Hashfast Inc.
   *
   * This program is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License as published by the Free
   * Software Foundation; either version 3 of the License, or (at your option)
   * any later version.  See COPYING for more details.
   */
  
  #include "config.h"
  
  #include <stdbool.h>
  
  #include "usbutils.h"
  
  #include "driver-hashfast.h"
  
  ////////////////////////////////////////////////////////////////////////////////
  // Support for the CRC's used in header (CRC-8) and packet body (CRC-32)
  ////////////////////////////////////////////////////////////////////////////////
  
  #define GP8  0x107   /* x^8 + x^2 + x + 1 */
  #define DI8  0x07
  
  static unsigned char crc8_table[256];	/* CRC-8 table */
  
  static void hf_init_crc8(void)
  {
  	int i,j;
  	unsigned char crc;
  
  	for (i = 0; i < 256; i++) {
  		crc = i;
  		for (j = 0; j < 8; j++)
  			crc = (crc << 1) ^ ((crc & 0x80) ? DI8 : 0);
  		crc8_table[i] = crc & 0xFF;
  	}
  }
  
  static unsigned char __maybe_unused hf_crc8(unsigned char *h)
  {
  	int i;
  	unsigned char crc;
  
  	h++;	// Preamble not included
  	for (i = 1, crc = 0xff; i < 7; i++)
  		crc = crc8_table[crc ^ *h++];
  
  	return crc;
  }
  
  struct hf_cmd {
  	int cmd;
  	char *cmd_name;
  	enum usb_cmds usb_cmd;
  };
  
  /* Entries in this array need to align with the actual op values specified
   * in hf_protocol.h */
  #define C_NULL C_MAX
  static const struct hf_cmd hf_cmds[] = {
  	{OP_NULL, "OP_NULL", C_NULL},				// 0
  	{OP_ROOT, "OP_ROOT", C_NULL},
  	{OP_RESET, "OP_RESET", C_HF_RESET},
  	{OP_PLL_CONFIG, "OP_PLL_CONFIG", C_HF_PLL_CONFIG},
  	{OP_ADDRESS, "OP_ADDRESS", C_HF_ADDRESS},
  	{OP_READDRESS, "OP_READDRESS", C_NULL},
  	{OP_HIGHEST, "OP_HIGHEST", C_NULL},
  	{OP_BAUD, "OP_BAUD", C_HF_BAUD},
  	{OP_UNROOT, "OP_UNROOT", C_NULL},			// 8
  	{OP_HASH, "OP_HASH", C_HF_HASH},
  	{OP_NONCE, "OP_NONCE", C_HF_NONCE},
  	{OP_ABORT, "OP_ABORT", C_HF_ABORT},
  	{OP_STATUS, "OP_STATUS", C_HF_STATUS},
  	{OP_GPIO, "OP_GPIO", C_NULL},
  	{OP_CONFIG, "OP_CONFIG", C_HF_CONFIG},
  	{OP_STATISTICS, "OP_STATISTICS", C_HF_STATISTICS},
  	{OP_GROUP, "OP_GROUP", C_NULL},				// 16
  	{OP_CLOCKGATE, "OP_CLOCKGATE", C_HF_CLOCKGATE},
  
  	{OP_USB_INIT, "OP_USB_INIT", C_HF_USB_INIT},		// 18
  	{OP_GET_TRACE, "OP_GET_TRACE", C_NULL},
  	{OP_LOOPBACK_USB, "OP_LOOPBACK_USB", C_NULL},
  	{OP_LOOPBACK_UART, "OP_LOOPBACK_UART", C_NULL},
  	{OP_DFU, "OP_DFU", C_NULL},
  	{OP_USB_SHUTDOWN, "OP_USB_SHUTDOWN", C_NULL},
  	{OP_DIE_STATUS, "OP_DIE_STATUS", C_HF_DIE_STATUS},	// 24
  	{OP_GWQ_STATUS, "OP_GWQ_STATUS", C_HF_GWQ_STATUS},
  	{OP_WORK_RESTART, "OP_WORK_RESTART", C_HF_WORK_RESTART},
  	{OP_USB_STATS1, "OP_USB_STATS1", C_NULL},
  	{OP_USB_GWQSTATS, "OP_USB_GWQSTATS", C_HF_GWQSTATS}
  };
  
  #define HF_USB_CMD_OFFSET (128 - 18)
  #define HF_USB_CMD(X) (X - HF_USB_CMD_OFFSET)
  
  /* 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);
  
  	if (len)
  		memcpy(&packet[sizeof(struct hf_header)], data, len);
  	tx_length = sizeof(struct hf_header) + len;
  
  	tx_length = sizeof(struct hf_header);
  
  	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 bool hashfast_send_header(struct cgpu_info *hashfast, struct hf_header *h,
  				 int cmd)
  {
  	int amount, ret, len;
  
  	len = sizeof(*h);
  	ret = usb_write(hashfast, (char *)h, len, &amount, hf_cmds[cmd].usb_cmd);
  	if (ret < 0 || amount != len) {
  		applog(LOG_WARNING, "HFA%d: send_header: %s USB Send error, ret %d amount %d vs. length %d",
  		       hashfast->device_id, hf_cmds[cmd].cmd_name, ret, amount, len);
  		return false;
  	}
  	return true;
  }
  
  static bool hashfast_get_header(struct cgpu_info *hashfast, struct hf_header *h,
  				uint8_t *computed_crc)
  {
  	int amount, ret, orig_len, len, ofs = 0, reads = 0;
  	char buf[512];
  	char *header;
  
  	/* Read for up to 200ms till we find the first occurrence of HF_PREAMBLE
  	 * though it should be the first byte unless we get woefully out of
  	 * sync. */
  	orig_len = len = sizeof(*h);
  	do {
  
  		if (++reads > 20)
  			return false;
  
  		ret = usb_read_timeout(hashfast, buf + ofs, len, &amount, 10, C_HF_GETHEADER);
  		if (unlikely(ret && ret != LIBUSB_ERROR_TIMEOUT))
  			return false;
  		ofs += amount;
  		header = memchr(buf, HF_PREAMBLE, ofs);
  		if (header)
  			len -= ofs - (header - buf);
  	} while (len);
  
  	memcpy(h, header, orig_len);
  	*computed_crc = hf_crc8((uint8_t *)h);
  
  	return true;
  }
  
  static bool hashfast_get_data(struct cgpu_info *hashfast, char *buf, int len4)
  {
  	int amount, ret, len = len4 * 4;
  
  	ret = usb_read(hashfast, buf, len, &amount, C_HF_GETDATA);
  	if (ret)
  		return false;
  	if (amount != len) {
  		applog(LOG_WARNING, "HFA %d: get_data: Strange amount returned %d vs. expected %d",
  		       hashfast->device_id, amount, len);
  		return false;
  	}
  	return true;
  }
  
  static bool hashfast_reset(struct cgpu_info *hashfast, struct hashfast_info *info)
  {
  	struct hf_usb_init_header usb_init, *hu = &usb_init;
  	struct hf_usb_init_base *db;
  	char buf[1024];
  	struct hf_header *h = (struct hf_header *)buf;
  	uint8_t hcrc;
  	bool ret;
  	int i;
  
  	info->hash_clock_rate = 550;                        // Hash clock rate in Mhz
  	// Assemble the USB_INIT request
  	memset(hu, 0, sizeof(*hu));
  	hu->preamble = HF_PREAMBLE;
  	hu->operation_code = OP_USB_INIT;
  	hu->protocol = PROTOCOL_GLOBAL_WORK_QUEUE;          // Protocol to use
  	hu->hash_clock = info->hash_clock_rate;             // Hash clock rate in Mhz
  	hu->crc8 = hf_crc8((uint8_t *)hu);
  	applog(LOG_WARNING, "HFA%d: Sending OP_USB_INIT with GWQ protocol specified",
  	       hashfast->device_id);
  
  	if (!hashfast_send_header(hashfast, (struct hf_header *)hu, HF_USB_CMD(OP_USB_INIT)))
  		return false;
  
  	// Check for the correct response.
  	// We extend the normal timeout - a complete device initialization, including
  	// bringing power supplies up from standby, etc., can take over a second.
  	for (i = 0; i < 30; i++) {
  		ret = hashfast_get_header(hashfast, h, &hcrc);
  		if (ret)
  			break;
  	}
  	if (!ret) {
  		applog(LOG_WARNING, "HFA %d: OP_USB_INIT failed!", hashfast->device_id);
  		return false;
  	}
  	if (h->crc8 != hcrc) {
  		applog(LOG_WARNING, "HFA %d: OP_USB_INIT failed! CRC mismatch", hashfast->device_id);
  		return false;
  	}
  	if (h->operation_code != OP_USB_INIT) {
  		applog(LOG_WARNING, "HFA %d: OP_USB_INIT: Tossing packet, valid but unexpected type", hashfast->device_id);
  		hashfast_get_data(hashfast, buf, h->data_length);
  		return false;
  	}
  
  	applog(LOG_DEBUG, "HFA %d: Good reply to OP_USB_INIT", hashfast->device_id);
  	applog(LOG_DEBUG, "HFA %d: OP_USB_INIT: %d die in chain, %d cores, device_type %d, refclk %d Mhz",
  	       hashfast->device_id, h->chip_address, h->core_address, h->hdata & 0xff, (h->hdata >> 8) & 0xff);
  
  	// Save device configuration
  	info->asic_count = h->chip_address;
  	info->core_count = h->core_address;
  	info->device_type = (uint8_t)h->hdata;
  	info->ref_frequency = (uint8_t)(h->hdata>>8);
  	info->hash_sequence = 0;
  	info->hash_sequence_tail = 0;
  	info->device_sequence_tail = 0;
  
  	// Size in bytes of the core bitmap in bytes
  	info->core_bitmap_size = (((info->asic_count * info->core_count) + 31) / 32) * 4;
  
  	// Get the usb_init_base structure
  	if (!hashfast_get_data(hashfast, (char *)&info->usb_init_base, U32SIZE(info->usb_init_base))) {
  		applog(LOG_WARNING, "HF%d: OP_USB_INIT failed! Failure to get usb_init_base data",
  		       hashfast->device_id);
  		return false;
  	}
  	db = &info->usb_init_base;
  	applog(LOG_INFO, "HFA %d:      firmware_rev:    %d.%d", hashfast->device_id,
  	       (db->firmware_rev >> 8) & 0xff, db->firmware_rev & 0xff);
  	applog(LOG_INFO, "HFA %d:      hardware_rev:    %d.%d", hashfast->device_id,
  	       (db->hardware_rev >> 8) & 0xff, db->hardware_rev & 0xff);
  	applog(LOG_INFO, "HFA %d:      serial number:   %d", hashfast->device_id,
  	       db->serial_number);
  	applog(LOG_INFO, "HFA %d:      hash clockrate:  %d Mhz", hashfast->device_id,
  	       db->hash_clockrate);
  	applog(LOG_INFO, "HFA %d:      inflight_target: %d", hashfast->device_id,
  	       db->inflight_target);
  
  	// Now a copy of the config data used
  	if (!hashfast_get_data(hashfast, (char *)&info->config_data, U32SIZE(info->config_data))) {
  		applog(LOG_WARNING, "HF%d: OP_USB_INIT failed! Failure to get config_data",
  		       hashfast->device_id);
  		return false;
  	}
  
  	// Now the core bitmap
  	info->core_bitmap = malloc(info->core_bitmap_size);
  	if (!info->core_bitmap)
  		quit(1, "Failed to malloc info core bitmap in hashfast_reset");
  	if (!hashfast_get_data(hashfast, (char *)info->core_bitmap, info->core_bitmap_size / 4)) {
  		applog(LOG_WARNING, "HF%d: OP_USB_INIT failed! Failure to get core_bitmap", hashfast->device_id);
  		return false;
  	}
  
  	return true;
  }
  
  static bool hashfast_detect_common(struct cgpu_info *hashfast)
  {
  	struct hashfast_info *info;
  	bool ret;
  
  	info = calloc(sizeof(struct hashfast_info), 1);
  	if (!info)
  		quit(1, "Failed to calloc hashfast_info in hashfast_detect_common");
  	hashfast->device_data = info;
  	/* hashfast_reset should fill in details for info */
  	ret = hashfast_reset(hashfast, info);
  	if (!ret) {
  		free(info);
  		return false;
  	}
  
  	info->works = calloc(sizeof(struct work *), HF_NUM_SEQUENCE);
  	if (!info->works)
  		quit(1, "Failed to calloc info works in hashfast_detect_common");
  	return true;
  }
  
  static void hashfast_usb_initialise(struct cgpu_info *hashfast)
  {
  	if (hashfast->usbinfo.nodev)
  		return;
  	// FIXME Do necessary initialising here
  }
  
  static bool hashfast_detect_one_usb(libusb_device *dev, struct usb_find_devices *found)
  {
  	struct cgpu_info *hashfast;
  
  	hashfast = usb_alloc_cgpu(&hashfast_drv, HASHFAST_MINER_THREADS);
  	if (!hashfast)
  		quit(1, "Failed to usb_alloc_cgpu hashfast");
  
  	if (!usb_init(hashfast, dev, found)) {
  		free(hashfast->device_data);
  		hashfast->device_data = NULL;
  		hashfast = usb_free_cgpu(hashfast);
  		return false;
  	}
  
  	hashfast->usbdev->usb_type = USB_TYPE_STD;
  
  	hashfast_usb_initialise(hashfast);
  
  	add_cgpu(hashfast);
  
  	return hashfast_detect_common(hashfast);
  }
  
  static void hashfast_detect(bool hotplug)
  {
  	/* Set up the CRC tables only once. */
  	if (!hotplug)
  		hf_init_crc8();
  	usb_detect(&hashfast_drv, hashfast_detect_one_usb);
  }
  
  static bool hashfast_prepare(struct thr_info __maybe_unused *thr)
  {
  	return true;
  }
  
  static int64_t hashfast_scanwork(struct thr_info __maybe_unused *thr)
  {
  	return 0;
  }
  
  static struct api_data *hashfast_api_stats(struct cgpu_info __maybe_unused *cgpu)
  {
  	return NULL;
  }
  
  static void hashfast_init(struct cgpu_info *hashfast)
  {
  	usb_buffer_enable(hashfast);
  }
  
  static void hashfast_shutdown(struct thr_info __maybe_unused *thr)
  {
  }
  
  struct device_drv hashfast_drv = {
  	.drv_id = DRIVER_hashfast,
  	.dname = "Hashfast",
  	.name = "HFA",
  	.drv_detect = hashfast_detect,
  	.thread_prepare = hashfast_prepare,
  	.hash_work = &hash_driver_work,
  	.scanwork = hashfast_scanwork,
  	.get_api_stats = hashfast_api_stats,
  	.reinit_device = hashfast_init,
  	.thread_shutdown = hashfast_shutdown,
  };
  

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