From 286003048aaef49b26bb9d93611dc69085e8982e Mon Sep 17 00:00:00 2001 From: Bruce Allan Date: Mon, 28 Jan 2013 00:43:48 +0000 Subject: e1000e: enable ECC on I217/I218 to catch packet buffer memory errors In rare instances, memory errors have been detected in the internal packet buffer memory on I217/I218 when stressed under certain environmental conditions. Enable Error Correcting Code (ECC) in hardware to catch both correctable and uncorrectable errors. Correctable errors will be handled by the hardware. Uncorrectable errors in the packet buffer will cause the packet to be received with an error indication in the buffer descriptor causing the packet to be discarded. If the uncorrectable error is in the descriptor itself, the hardware will stop and interrupt the driver indicating the error. The driver will then reset the hardware in order to clear the error and restart. Both types of errors will be accounted for in statistics counters. Signed-off-by: Bruce Allan Cc: # 3.5.x & 3.6.x Tested-by: Jeff Pieper Signed-off-by: Jeff Kirsher Signed-off-by: David S. Miller --- drivers/net/ethernet/intel/e1000e/hw.h | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/net/ethernet/intel/e1000e/hw.h') diff --git a/drivers/net/ethernet/intel/e1000e/hw.h b/drivers/net/ethernet/intel/e1000e/hw.h index cf217777586c..b88676ff3d86 100644 --- a/drivers/net/ethernet/intel/e1000e/hw.h +++ b/drivers/net/ethernet/intel/e1000e/hw.h @@ -77,6 +77,7 @@ enum e1e_registers { #define E1000_POEMB E1000_PHY_CTRL /* PHY OEM Bits */ E1000_PBA = 0x01000, /* Packet Buffer Allocation - RW */ E1000_PBS = 0x01008, /* Packet Buffer Size */ + E1000_PBECCSTS = 0x0100C, /* Packet Buffer ECC Status - RW */ E1000_EEMNGCTL = 0x01010, /* MNG EEprom Control */ E1000_EEWR = 0x0102C, /* EEPROM Write Register - RW */ E1000_FLOP = 0x0103C, /* FLASH Opcode Register */ -- cgit v1.2.3