thodg/cgminer

diff --git a/api.c b/api.c
index c71b949..6a4d715 100644
--- a/api.c
+++ b/api.c
@@ -465,7 +465,7 @@ struct CODES {
  { SEVERITY_SUCC,  MSG_GPUFAN,	PARAM_BOTH,	"Setting GPU %d fan to (%s) reported succeess" },
  { SEVERITY_ERR,   MSG_MISFN,	PARAM_NONE,	"Missing save filename parameter" },
  { SEVERITY_ERR,   MSG_BADFN,	PARAM_STR,	"Can't open or create save file '%s'" },
- { SEVERITY_ERR,   MSG_SAVED,	PARAM_STR,	"Configuration saved to file '%s'" },
+ { SEVERITY_SUCC,  MSG_SAVED,	PARAM_STR,	"Configuration saved to file '%s'" },
  { SEVERITY_ERR,   MSG_ACCDENY,	PARAM_STR,	"Access denied to '%s' command" },
  { SEVERITY_SUCC,  MSG_ACCOK,	PARAM_NONE,	"Privileged access OK" },
  { SEVERITY_SUCC,  MSG_ENAPOOL,	PARAM_POOL,	"Enabling pool %d:'%s'" },
@@ -879,7 +879,7 @@ static void pgastatus(int pga, bool isjson)
 
 		cgpu->utility = cgpu->accepted / ( total_secs ? total_secs : 1 ) * 60;
 
-		if (cgpu->deven == DEV_ENABLED)
+		if (cgpu->deven != DEV_DISABLED)
 			enabled = (char *)YES;
 		else
 			enabled = (char *)NO;
@@ -1092,7 +1092,7 @@ static void pgaenable(__maybe_unused SOCKETTYPE c, char *param, bool isjson)
 
 	struct cgpu_info *cgpu = devices[dev];
 
-	if (cgpu->deven == DEV_ENABLED) {
+	if (cgpu->deven != DEV_DISABLED) {
 		strcpy(io_buffer, message(MSG_PGALRENA, id, NULL, isjson));
 		return;
 	}
@@ -1143,12 +1143,12 @@ static void pgadisable(__maybe_unused SOCKETTYPE c, char *param, bool isjson)
 
 	struct cgpu_info *cgpu = devices[dev];
 
-	if (cgpu->deven != DEV_ENABLED) {
+	if (cgpu->deven == DEV_DISABLED) {
 		strcpy(io_buffer, message(MSG_PGALRDIS, id, NULL, isjson));
 		return;
 	}
 
-	cgpu->deven = DEV_IDLE;
+	cgpu->deven = DEV_DISABLED;
 
 	strcpy(io_buffer, message(MSG_PGADIS, id, NULL, isjson));
 }
@@ -1979,12 +1979,13 @@ static void devdetails(__maybe_unused SOCKETTYPE c, __maybe_unused char *param, 
 
 void dosave(__maybe_unused SOCKETTYPE c, char *param, bool isjson)
 {
+	char filename[PATH_MAX];
 	FILE *fcfg;
 	char *ptr;
 
 	if (param == NULL || *param == '\0') {
-		strcpy(io_buffer, message(MSG_MISFN, 0, NULL, isjson));
-		return;
+		default_save_file(filename);
+		param = filename;
 	}
 
 	fcfg = fopen(param, "w");
@@ -2584,4 +2585,3 @@ die:
 
 	mutex_unlock(&quit_restart_lock);
 }
-
diff --git a/cgminer.c b/cgminer.c
index d12a009..ceda7a6 100644
--- a/cgminer.c
+++ b/cgminer.c
@@ -3959,7 +3959,7 @@ void *miner_thread(void *userdata)
 				tv_lastupdate = tv_end;
 			}
 
-			if (unlikely(mythr->pause || cgpu->deven == DEV_DISABLED || cgpu->deven == DEV_RECOVER)) {
+			if (unlikely(mythr->pause || cgpu->deven != DEV_ENABLED)) {
 				applog(LOG_WARNING, "Thread %d being disabled", thr_id);
 disabled:
 				mythr->rolling = mythr->cgpu->rolling = 0;
@@ -3968,6 +3968,7 @@ disabled:
 				tq_pop(mythr->q, NULL); /* Ignore ping that's popped */
 				thread_reportin(mythr);
 				applog(LOG_WARNING, "Thread %d being re-enabled", thr_id);
+				if (api->thread_enable) api->thread_enable(mythr);
 			}
 
 			sdiff.tv_sec = sdiff.tv_usec = 0;
diff --git a/driver-bitforce.c b/driver-bitforce.c
index 8067cca..0a2fc82 100644
--- a/driver-bitforce.c
+++ b/driver-bitforce.c
@@ -20,9 +20,13 @@
 #include "fpgautils.h"
 #include "miner.h"
 
-#define BITFORCE_SLEEP_US 4500000
-#define BITFORCE_SLEEP_MS (BITFORCE_SLEEP_US/1000)
-#define BITFORCE_TIMEOUT_MS 30000
+/* @832MH/s wait time is ~4500ms 
+   @864MH/s wait time is ~4430ms 
+-> @896MH/s wait time will be ~4350ms */
+#define BITFORCE_SLEEP_MS 4300
+#define BITFORCE_TIMEOUT_MS 15000
+#define BITFORCE_CHECK_INTERVAL_MS 10
+#define WORK_CHECK_INTERVAL_MS 100
 
 struct device_api bitforce_api;
 
@@ -44,7 +48,7 @@ static ssize_t BFwrite2(int fd, const void *buf, ssize_t bufLen)
 
 #define BFwrite(fd, buf, bufLen)  do {  \
 	if ((bufLen) != BFwrite2(fd, buf, bufLen)) {  \
-		applog(LOG_ERR, "Error writing to BitForce (" #buf ")");  \
+		applog(LOG_ERR, "BFL: Error writing (" #buf ")");  \
 		return 0;  \
 	}  \
 } while(0)
@@ -58,18 +62,18 @@ static bool bitforce_detect_one(const char *devpath)
 
 	int fdDev = BFopen(devpath);
 	if (unlikely(fdDev == -1)) {
-		applog(LOG_ERR, "BitForce Detect: Failed to open %s", devpath);
+		applog(LOG_ERR, "BFL: Failed to open %s", devpath);
 		return false;
 	}
 	BFwrite(fdDev, "ZGX", 3);
 	BFgets(pdevbuf, sizeof(pdevbuf), fdDev);
 	if (unlikely(!pdevbuf[0])) {
-		applog(LOG_ERR, "Error reading from BitForce (ZGX)");
+		applog(LOG_ERR, "BFL: Error reading (ZGX)");
 		return 0;
 	}
 	BFclose(fdDev);
 	if (unlikely(!strstr(pdevbuf, "SHA256"))) {
-		applog(LOG_ERR, "BitForce Detect: Didn't recognise BitForce on %s", devpath);
+		applog(LOG_ERR, "BFL: Didn't recognise BitForce on %s", devpath);
 		return false;
 	}
 
@@ -86,7 +90,7 @@ static bool bitforce_detect_one(const char *devpath)
 		bitforce->name = strdup(pdevbuf + 7);
 	}
 	
-	mutex_init(&bitforce->dev_lock);
+	mutex_init(&bitforce->device_mutex);
 
 	return add_cgpu(bitforce);
 }
@@ -122,13 +126,13 @@ static bool bitforce_thread_prepare(struct thr_info *thr)
 
 	int fdDev = BFopen(bitforce->device_path);
 	if (unlikely(-1 == fdDev)) {
-		applog(LOG_ERR, "Failed to open BitForce on %s", bitforce->device_path);
+		applog(LOG_ERR, "BFL%i: Failed to open %s", bitforce->device_id, bitforce->device_path);
 		return false;
 	}
 
 	bitforce->device_fd = fdDev;
 
-	applog(LOG_INFO, "Opened BitForce on %s", bitforce->device_path);
+	applog(LOG_INFO, "BFL%i: Opened %s", bitforce->device_id, bitforce->device_path);
 	gettimeofday(&now, NULL);
 	get_datestamp(bitforce->init, &now);
 
@@ -142,30 +146,33 @@ static bool bitforce_init(struct cgpu_info *bitforce)
 	char pdevbuf[0x100];
 	char *s;
 
-	applog(LOG_DEBUG, "BFL%i: Re-initalizing", bitforce->device_id);
+	applog(LOG_INFO, "BFL%i: Re-initalizing", bitforce->device_id);
 
-	BFclose(fdDev);
+	if (fdDev) {
+		BFclose(fdDev);
+		bitforce->device_fd = 0;
+	}
 
 	fdDev = BFopen(devpath);
 	if (unlikely(fdDev == -1)) {
-		applog(LOG_ERR, "BitForce init: Failed to open %s", devpath);
+		applog(LOG_ERR, "BFL%i: Failed to open %s", bitforce->device_id, devpath);
 		return false;
 	}
 
 	bitforce->device_fd = fdDev;
 
-	mutex_lock(&bitforce->dev_lock);
+	mutex_lock(&bitforce->device_mutex);
 	BFwrite(fdDev, "ZGX", 3);
 	BFgets(pdevbuf, sizeof(pdevbuf), fdDev);
-	mutex_unlock(&bitforce->dev_lock);
+	mutex_unlock(&bitforce->device_mutex);
 	
 	if (unlikely(!pdevbuf[0])) {
-		applog(LOG_ERR, "Error reading from BitForce (ZGX)");
+		applog(LOG_ERR, "BFL%i: Error reading (ZGX)", bitforce->device_id);
 		return false;
 	}
 
 	if (unlikely(!strstr(pdevbuf, "SHA256"))) {
-		applog(LOG_ERR, "BitForce init: Didn't recognise BitForce on %s", devpath);
+		applog(LOG_ERR, "BFL%i: Didn't recognise BitForce on %s", bitforce->device_id, devpath);
 		return false;
 	}
 	
@@ -184,13 +191,13 @@ static bool bitforce_get_temp(struct cgpu_info *bitforce)
 	char pdevbuf[0x100];
 	char *s;
 
-	mutex_lock(&bitforce->dev_lock);
+	mutex_lock(&bitforce->device_mutex);
 	BFwrite(fdDev, "ZLX", 3);
 	BFgets(pdevbuf, sizeof(pdevbuf), fdDev);
-	mutex_unlock(&bitforce->dev_lock);
+	mutex_unlock(&bitforce->device_mutex);
 	
 	if (unlikely(!pdevbuf[0])) {
-		applog(LOG_ERR, "Error reading temp from BitForce (ZLX)");
+		applog(LOG_ERR, "BFL%i: Error reading (ZLX)", bitforce->device_id);
 		return false;
 	}
 	if ((!strncasecmp(pdevbuf, "TEMP", 4)) && (s = strchr(pdevbuf + 4, ':'))) {
@@ -198,7 +205,7 @@ static bool bitforce_get_temp(struct cgpu_info *bitforce)
 		if (temp > 0) {
 			bitforce->temp = temp;
 			if (temp > bitforce->cutofftemp) {
-				applog(LOG_WARNING, "Hit thermal cutoff limit on %s %d, disabling!", bitforce->api->name, bitforce->device_id);
+				applog(LOG_WARNING, "BFL%i: Hit thermal cutoff limit, disabling!", bitforce->device_id);
 				bitforce->deven = DEV_RECOVER;
 
 				bitforce->device_last_not_well = time(NULL);
@@ -218,17 +225,22 @@ static bool bitforce_send_work(struct thr_info *thr, struct work *work)
 	unsigned char ob[61] = ">>>>>>>>12345678901234567890123456789012123456789012>>>>>>>>";
 	char *s;
 
-	mutex_lock(&bitforce->dev_lock);
+	mutex_lock(&bitforce->device_mutex);
 	BFwrite(fdDev, "ZDX", 3);
 	BFgets(pdevbuf, sizeof(pdevbuf), fdDev);
 	if (unlikely(!pdevbuf[0])) {
-		applog(LOG_ERR, "Error reading from BitForce (ZDX)");
-		mutex_unlock(&bitforce->dev_lock);
+		applog(LOG_ERR, "BFL%i: Error reading (ZDX)", bitforce->device_id);
+		mutex_unlock(&bitforce->device_mutex);
 		return false;
 	}
-	if (unlikely(pdevbuf[0] != 'O' || pdevbuf[1] != 'K')) {
-		applog(LOG_ERR, "BitForce ZDX reports: %s", pdevbuf);
-		mutex_unlock(&bitforce->dev_lock);
+	if (pdevbuf[0] == 'B'){
+		applog(LOG_WARNING, "BFL%i: Throttling", bitforce->device_id);
+		mutex_unlock(&bitforce->device_mutex);
+		return true;
+	}
+	else if (unlikely(pdevbuf[0] != 'O' || pdevbuf[1] != 'K')) {
+		applog(LOG_ERR, "BFL%i: ZDX reports: %s", bitforce->device_id, pdevbuf);
+		mutex_unlock(&bitforce->device_mutex);
 		return false;
 	}
 	memcpy(ob + 8, work->midstate, 32);
@@ -237,17 +249,17 @@ static bool bitforce_send_work(struct thr_info *thr, struct work *work)
 	BFwrite(fdDev, ob, 60);
 	if (opt_debug) {
 		s = bin2hex(ob + 8, 44);
-		applog(LOG_DEBUG, "BitForce block data: %s", s);
+		applog(LOG_DEBUG, "BFL%i: block data: %s", bitforce->device_id, s);
 		free(s);
 	}
 	BFgets(pdevbuf, sizeof(pdevbuf), fdDev);
-	mutex_unlock(&bitforce->dev_lock);
+	mutex_unlock(&bitforce->device_mutex);
 	if (unlikely(!pdevbuf[0])) {
-		applog(LOG_ERR, "Error reading from BitForce (block data)");
+		applog(LOG_ERR, "BFL%i: Error reading (block data)", bitforce->device_id);
 		return false;
 	}
 	if (unlikely(pdevbuf[0] != 'O' || pdevbuf[1] != 'K')) {
-		applog(LOG_ERR, "BitForce block data reports: %s", pdevbuf);
+		applog(LOG_ERR, "BFL%i: block data reports: %s", bitforce->device_id, pdevbuf);
 		return false;
 	}
 	return true;
@@ -261,41 +273,39 @@ static uint64_t bitforce_get_result(struct thr_info *thr, struct work *work)
 	char pdevbuf[0x100];
 	char *pnoncebuf;
 	uint32_t nonce;
-	int i;
+	unsigned int wait_ms = BITFORCE_SLEEP_MS;
 
-	i = BITFORCE_SLEEP_MS;
-	while (i < BITFORCE_TIMEOUT_MS) {
-    	mutex_lock(&bitforce->dev_lock);
+	while (wait_ms < BITFORCE_TIMEOUT_MS) {
+		mutex_lock(&bitforce->device_mutex);
 		BFwrite(fdDev, "ZFX", 3);
 		BFgets(pdevbuf, sizeof(pdevbuf), fdDev);
-	    mutex_unlock(&bitforce->dev_lock);
+		mutex_unlock(&bitforce->device_mutex);
 		if (unlikely(!pdevbuf[0])) {
-			applog(LOG_ERR, "Error reading from BitForce (ZFX)");
-	    	mutex_unlock(&bitforce->dev_lock);
+			applog(LOG_ERR, "BFL%i: Error reading (ZFX)", bitforce->device_id);
+			mutex_unlock(&bitforce->device_mutex);
 			return 0;
 		}
 		if (pdevbuf[0] != 'B')
 			break;
-		usleep(10000);
-		i += 10;
+		usleep(BITFORCE_CHECK_INTERVAL_MS*1000);
+		wait_ms += BITFORCE_CHECK_INTERVAL_MS;
 	}
-
-	if (i >= BITFORCE_TIMEOUT_MS) {
-		applog(LOG_ERR, "BitForce took longer than 30s");
+	if (wait_ms >= BITFORCE_TIMEOUT_MS) {
+		applog(LOG_ERR, "BFL%i took longer than 15s");
 		bitforce->device_last_not_well = time(NULL);
 		bitforce->device_not_well_reason = REASON_THREAD_ZERO_HASH;
 		bitforce->thread_zero_hash_count++;
 		return 1;
 	}
 
-	applog(LOG_DEBUG, "BitForce waited %dms until %s\n", i, pdevbuf);
+	applog(LOG_DEBUG, "BFL%i: waited %dms until %s\n", bitforce->device_id, wait_ms, pdevbuf);
 	work->blk.nonce = 0xffffffff;
 	if (pdevbuf[2] == '-') 
 		return 0xffffffff;   /* No valid nonce found */
 	else if (pdevbuf[0] == 'I') 
 		return 1;          /* Device idle */
 	else if (strncasecmp(pdevbuf, "NONCE-FOUND", 11)) {
-		applog(LOG_WARNING, "BitForce result reports: %s", pdevbuf);
+		applog(LOG_WARNING, "BFL%i: result reports: %s", bitforce->device_id, pdevbuf);
 		return 1;
 	}
 
@@ -319,42 +329,34 @@ static uint64_t bitforce_get_result(struct thr_info *thr, struct work *work)
 static void bitforce_shutdown(struct thr_info *thr)
 {
 	struct cgpu_info *bitforce = thr->cgpu;
-	int fdDev = bitforce->device_fd;
 
-	BFclose(fdDev);
+	BFclose(bitforce->device_fd);
+	bitforce->device_fd = 0;
 }
 
-#define CHECK_INTERVAL_MS 200
+static void biforce_thread_enable(struct thr_info *thr)
+{
+	struct cgpu_info *bitforce = thr->cgpu;
+
+	bitforce_init(bitforce);
+}
 
 static uint64_t bitforce_scanhash(struct thr_info *thr, struct work *work, uint64_t __maybe_unused max_nonce)
 {
 	struct cgpu_info *bitforce = thr->cgpu;
-	bool dev_enabled = (bitforce->deven == DEV_ENABLED);
-	static enum dev_enable last_dev_state = DEV_ENABLED;
-	int wait_ms = 0;
-	
-	if (bitforce->deven == DEV_DISABLED) {
-		bitforce_shutdown(thr);
-		return 1;
-	}
-	
-	// if device has just gone from disabled to enabled, re-initialise it
-	if (last_dev_state == DEV_DISABLED && dev_enabled)
-		bitforce_init(bitforce);
-	last_dev_state = bitforce->deven;
+	unsigned int wait_ms = 0;
 
 	if (!bitforce_send_work(thr, work))
 		return 0;
-
+	
 	while (wait_ms < BITFORCE_SLEEP_MS) {
-		usleep(CHECK_INTERVAL_MS * 1000);
-		wait_ms += CHECK_INTERVAL_MS;
+		usleep(WORK_CHECK_INTERVAL_MS*1000);
+		wait_ms += WORK_CHECK_INTERVAL_MS;
 		if (work_restart[thr->id].restart) {
-			applog(LOG_DEBUG, "BFL%i: New work detected, discarding current job", bitforce->device_id);
-		    return 1; //we have discard all work; equivilent to 0 hashes done.
+			applog(LOG_DEBUG, "BFL%i: Work restart, discarding after %dms", bitforce->device_id, wait_ms);
+			return 1; //we have discarded all work; equivilent to 0 hashes done.
 		}
 	}
-
 	return bitforce_get_result(thr, work);
 }
 
@@ -367,9 +369,11 @@ struct device_api bitforce_api = {
 	.dname = "bitforce",
 	.name = "BFL",
 	.api_detect = bitforce_detect,
+	.reinit_device = bitforce_init,
 	.get_statline_before = get_bitforce_statline_before,
 	.get_stats = bitforce_get_stats,
 	.thread_prepare = bitforce_thread_prepare,
 	.scanhash = bitforce_scanhash,
-	.thread_shutdown = bitforce_shutdown
+	.thread_shutdown = bitforce_shutdown,
+	.thread_enable = biforce_thread_enable
 };
diff --git a/miner.h b/miner.h
index 6e9ea70..a71447b 100644
--- a/miner.h
+++ b/miner.h
@@ -245,13 +245,13 @@ struct device_api {
 	bool (*prepare_work)(struct thr_info*, struct work*);
 	uint64_t (*scanhash)(struct thr_info*, struct work*, uint64_t);
 	void (*thread_shutdown)(struct thr_info*);
+	void (*thread_enable)(struct thr_info*);
 };
 
 enum dev_enable {
 	DEV_ENABLED,
 	DEV_DISABLED,
 	DEV_RECOVER,
-	DEV_IDLE,
 };
 
 enum cl_kernels {
@@ -377,8 +377,6 @@ struct cgpu_info {
 	int dev_thermal_cutoff_count;
 
 	struct cgminer_stats cgminer_stats;
-	
-	pthread_mutex_t dev_lock;
 };
 
 extern bool add_cgpu(struct cgpu_info*);