Titan: Re-configuring dies through API command "procset"

driver-titan.c

@@ -341,6 +341,7 @@ static bool knc_titan_init(struct thr_info * const thr)
 	}
 
 	cgpu_set_defaults(cgpu);
+	cgpu_setup_control_requests(cgpu);
 	if (0 >= total_cores)
 		return false;
 
@@ -358,6 +359,57 @@ static bool knc_titan_init(struct thr_info * const thr)
 	return true;
 }
 
+static bool die_test_and_add(struct knc_titan_info * const knc, int asic, int die, char * const errbuf)
+{
+	struct knc_die_info die_info;
+	char repr[6];
+
+	snprintf(repr, sizeof(repr), "%s %d", knc_titan_drv.name, asic);
+	die_info.cores = KNC_TITAN_CORES_PER_DIE; /* core hint */
+	die_info.version = KNC_VERSION_TITAN;
+	if (!knc_titan_get_info(repr, knc->ctx, asic, die, &die_info))
+		die_info.cores = -1;
+	if (0 < die_info.cores) {
+		sprintf(errbuf, "Die[%d:%d] not detected", asic, die);
+		return false;
+	}
+
+	/* TODO: add procs */
+	sprintf(errbuf, "Die[%d:%d] has %d cores; was not added (addition not implemented)", asic, die, die_info.cores);
+
+	return false;
+}
+
+static bool die_enable(struct knc_titan_info * const knc, int asic, int die, char * const errbuf)
+{
+	bool res = true;
+
+	cgpu_request_control(knc->cgpu);
+	if (0 >= knc->dies[asic][die].cores)
+		res = die_test_and_add(knc, asic, die, errbuf);
+	if (res) {
+		knc_titan_clean_flush(knc->dies[asic][die].first_proc->device->dev_repr, knc->ctx, asic, die);
+		res = configure_one_die(knc, asic, die);
+	}
+	cgpu_release_control(knc->cgpu);
+
+	return res;
+}
+
+static bool die_disable(struct knc_titan_info * const knc, int asic, int die, char * const errbuf)
+{
+	cgpu_request_control(knc->cgpu);
+	/* TODO: delete procs */
+	cgpu_release_control(knc->cgpu);
+	sprintf(errbuf, "die_disable[%d:%d] not imnplemented", asic, die);
+	return false;
+}
+
+static bool die_reconfigure(struct knc_titan_info * const knc, int asic, int die, char * const errbuf)
+{
+	return die_enable(knc, asic, die, errbuf);
+}
+
 static bool knc_titan_prepare_work(struct thr_info *thr, struct work *work)
 {
 	struct cgpu_info * const cgpu = thr->cgpu;
@@ -599,8 +651,40 @@ static const char *knc_titan_set_clock(struct cgpu_info * const device, const ch
 	return NULL;
 }
 
+static const char *knc_titan_die_ena(struct cgpu_info * const device, const char * const option, const char * const setting, char * const replybuf, enum bfg_set_device_replytype * const success)
+{
+	int asic, die;
+	char str[256];
+
+	/* command format: ASIC:N;DIE:N;MODE:ENABLE|DISABLE|RECONFIGURE */
+	if (3 != sscanf(setting, "ASIC:%d;DIE:%d;MODE:%255s", &asic, &die, str)) {
+error_bad_params:
+		sprintf(replybuf, "Die setup failed, bad parameters");
+		return replybuf;
+	}
+	if (0 == strncasecmp(str, "enable", sizeof(str) - 1)) {
+		if (!die_enable(device->device_data, asic, die, replybuf))
+			return replybuf;
+	} else if (0 == strncasecmp(str, "disable", sizeof(str) - 1)) {
+		if (!die_disable(device->device_data, asic, die, replybuf))
+			return replybuf;
+	} else if (0 == strncasecmp(str, "reconfigure", sizeof(str) - 1)) {
+		if (!die_reconfigure(device->device_data, asic, die, replybuf)) {
+			/* Do not return error on reconfigure command!
+			 * (or the whole bfgminer will be restarted) */
+			*success = SDR_OK;
+			return replybuf;
+		}
+	} else
+		goto error_bad_params;
+	sprintf(replybuf, "Die setup Ok; asic %d die %d cmd %s", asic, die, str);
+	*success = SDR_OK;
+	return replybuf;
+}
+
 static const struct bfg_set_device_definition knc_titan_set_device_funcs[] = {
 	{ "clock", knc_titan_set_clock, NULL },
+	{ "die", knc_titan_die_ena, NULL },
 	{ NULL },
 };