PARTIAL Merge commit '1725179' into stratum

Omitted merging MMQ driver refactoring mess

Conflicts:
	driver-modminer.c
	miner.c
	miner.h

FPGA-README

@@ -2,7 +2,48 @@
 This README contains extended details about FPGA mining with cgminer
 
 
-Bitforce
+ModMinerQuad (MMQ)
+------------------
+
+The mining bitstream does not survive a power cycle, so cgminer will upload
+it, if it needs to, before it starts mining
+
+You must make sure you have an approriate firmware in your MMQ
+Read here for official details of changing the firmware:
+ http://wiki.btcfpga.com/index.php?title=Firmware
+
+The basics of changing the firmware are:
+ Join the 2 left pads of the "RESET" pad with wire and the led will dim
+ Without dicsonnecting the "RESET", join the 2 left pads of the "ISP" pad
+ with a wire and it will stay dim
+ Release "RESET" then release "ISP" and is should still be dim
+ Unplug the USB and when you plug it back in it will show up as a mass
+ storage device
+  Linux: (as one single line):
+   mcopy -i /dev/disk/by-id/usb-NXP_LPC134X_IFLASH_ISP000000000-0:0
+      modminer091012.bin ::/firmware.bin
+  Windows: delete the MSD device file firmware.bin and copy in the new one
+   rename the new file and put it under the same name 'firmware.bin'
+ Disconnect the USB correctly (so writes are flushed first)
+ Join and then disconnect "RESET" and then plug the USB back in and it's done
+
+Best to update to one of the latest 2 listed below if you don't already
+have one of them in your MMQ
+
+The current latest different firmware are:
+
+ Latest for support of normal or TLM bitstream:
+  http://btcfpga.com/files/firmware/modminer092612-TLM.bin
+
+ Latest with only normal bitstream support (Temps/HW Fix):
+  http://btcfpga.com/files/firmware/modminer091012.bin
+
+The code is currently tested on the modminer091012.bin firmware.
+This comment will be updated when others have been tested
+
+
+Bitforce (BFL)
+--------------
 
 --bfl-range         Use nonce range on bitforce devices if supported
 
@@ -37,7 +78,8 @@ the MH/s value reported with the changed firmware - and the MH/s reported
 will be less than the firmware speed since you lose work on every block change.
 
 
-Icarus
+Icarus (ICA)
+------------
 
 There are two hidden options in cgminer when Icarus support is compiled in:
 

miner.c

@@ -5845,6 +5845,10 @@ bool submit_nonce(struct thr_info *thr, struct work *work, uint32_t nonce)
 			       cgpu->api->name, cgpu->device_id);
 			++hw_errors;
 			++thr->cgpu->hw_errors;
+
+			if (thr->cgpu->api->hw_error)
+				thr->cgpu->api->hw_error(thr);
+
 			return false;
 		}
 		case TNR_HIGH:

miner.h

@@ -313,6 +313,7 @@ struct device_api {
 	void (*free_work)(struct thr_info*, struct work*);
 	bool (*prepare_work)(struct thr_info*, struct work*);
 	int64_t (*scanhash)(struct thr_info*, struct work*, int64_t);
+	void (*hw_error)(struct thr_info*);
 	void (*thread_shutdown)(struct thr_info*);
 	void (*thread_enable)(struct thr_info*);
 };