\r
#include "Lan9118Dxe.h"\r
\r
-\r
typedef struct {\r
MAC_ADDR_DEVICE_PATH Lan9118;\r
EFI_DEVICE_PATH_PROTOCOL End;\r
SnpMode->NvRamSize = 0; // No NVRAM with this device\r
SnpMode->NvRamAccessSize = 0; // No NVRAM with this device\r
\r
- // Update network mode information\r
- SnpMode->ReceiveFilterMask = EFI_SIMPLE_NETWORK_RECEIVE_MULTICAST |\r
- EFI_SIMPLE_NETWORK_RECEIVE_UNICAST |\r
- EFI_SIMPLE_NETWORK_RECEIVE_BROADCAST |\r
- EFI_SIMPLE_NETWORK_RECEIVE_PROMISCUOUS;/* |\r
- EFI_SIMPLE_NETWORK_RECEIVE_PROMISCUOUS_MULTICAST;*/\r
- // Current allowed settings\r
- SnpMode->ReceiveFilterSetting = EFI_SIMPLE_NETWORK_RECEIVE_MULTICAST |\r
- EFI_SIMPLE_NETWORK_RECEIVE_UNICAST |\r
- EFI_SIMPLE_NETWORK_RECEIVE_BROADCAST;\r
+ //\r
+ // Claim that all receive filter settings are supported, though the MULTICAST mode\r
+ // is not completely supported. The LAN9118 Ethernet controller is only able to\r
+ // do a "hash filtering" and not a perfect filtering on multicast addresses. The\r
+ // controller does not filter the multicast addresses directly but a hash value\r
+ // of them. The hash value of a multicast address is derived from its CRC and\r
+ // ranges from 0 to 63 included.\r
+ // We claim that the perfect MULTICAST filtering mode is supported because\r
+ // we do not want the user to switch directly to the PROMISCOUS_MULTICAST mode\r
+ // and thus not being able to take advantage of the hash filtering.\r
+ //\r
+ SnpMode->ReceiveFilterMask = EFI_SIMPLE_NETWORK_RECEIVE_UNICAST |\r
+ EFI_SIMPLE_NETWORK_RECEIVE_MULTICAST |\r
+ EFI_SIMPLE_NETWORK_RECEIVE_BROADCAST |\r
+ EFI_SIMPLE_NETWORK_RECEIVE_PROMISCUOUS |\r
+ EFI_SIMPLE_NETWORK_RECEIVE_PROMISCUOUS_MULTICAST;\r
+\r
+ // We do not intend to receive anything for the time being.\r
+ SnpMode->ReceiveFilterSetting = 0;\r
\r
// LAN9118 has 64bit hash table, can filter 64 MCast MAC Addresses\r
SnpMode->MaxMCastFilterCount = MAX_MCAST_FILTER_CNT;\r
}\r
\r
// Initiate a PHY reset\r
- Status = PhySoftReset (PHY_RESET_PMT | PHY_RESET_CHECK_LINK, Snp);\r
+ Status = PhySoftReset (PHY_RESET_PMT, Snp);\r
if (EFI_ERROR (Status)) {\r
Snp->Mode->State = EfiSimpleNetworkStopped;\r
DEBUG ((EFI_D_WARN, "Warning: Link not ready after TimeOut. Check ethernet cable\n"));\r
\r
// Write the current configuration to the register\r
MmioWrite32 (LAN9118_PMT_CTRL, PmConf);\r
- gBS->Stall (LAN9118_STALL);\r
- gBS->Stall (LAN9118_STALL);\r
+ MemoryFence();\r
\r
// Configure GPIO and HW\r
Status = ConfigureHardware (HW_CONF_USE_LEDS, Snp);\r
return Status;\r
}\r
\r
- // Enable the receiver and transmitter\r
- Status = StartRx (0, Snp);\r
- if (EFI_ERROR(Status)) {\r
- return Status;\r
- }\r
-\r
+ // Enable the transmitter\r
Status = StartTx (START_TX_MAC | START_TX_CFG, Snp);\r
if (EFI_ERROR(Status)) {\r
return Status;\r
}\r
\r
// Initiate a PHY reset\r
- Status = PhySoftReset (PHY_RESET_PMT | PHY_RESET_CHECK_LINK, Snp);\r
+ Status = PhySoftReset (PHY_RESET_PMT, Snp);\r
if (EFI_ERROR (Status)) {\r
Snp->Mode->State = EfiSimpleNetworkStopped;\r
return EFI_NOT_STARTED;\r
\r
// Write the current configuration to the register\r
MmioWrite32 (LAN9118_PMT_CTRL, PmConf);\r
- gBS->Stall (LAN9118_STALL);\r
+ MemoryFence();\r
+\r
+ // Reactivate the LEDs\r
+ Status = ConfigureHardware (HW_CONF_USE_LEDS, Snp);\r
+ if (EFI_ERROR (Status)) {\r
+ return Status;\r
+ }\r
\r
// Check that a buffer size was specified in SnpInitialize\r
if (gTxBuffer != 0) {\r
HwConf |= HW_CFG_TX_FIFO_SIZE(gTxBuffer); // assign size chosen in SnpInitialize\r
\r
MmioWrite32 (LAN9118_HW_CFG, HwConf); // Write the conf\r
- gBS->Stall (LAN9118_STALL);\r
+ MemoryFence();\r
}\r
\r
// Enable the receiver and transmitter and clear their contents\r
return Status;\r
}\r
\r
+ // Back to the started and thus not initialized state\r
+ Snp->Mode->State = EfiSimpleNetworkStarted;\r
+\r
return EFI_SUCCESS;\r
}\r
\r
UINT32 Crc;\r
UINT8 HashValue;\r
UINT32 MacCSRValue;\r
+ UINT32 ReceiveFilterSetting;\r
EFI_MAC_ADDRESS *Mac;\r
+ EFI_MAC_ADDRESS ZeroMac;\r
\r
// Check Snp Instance\r
if (Snp == NULL) {\r
MultHashTableHigh = IndirectMACRead32 (INDIRECT_MAC_INDEX_HASHH);\r
}\r
\r
+ //\r
+ // Before to change anything, stop and reset the reception of\r
+ // packets.\r
+ //\r
+ StopRx (STOP_RX_CLEAR, Snp);\r
+\r
//\r
// Write the mask of the selected hash values for the multicast filtering.\r
// The two masks are set to zero if the multicast filtering is not enabled.\r
IndirectMACWrite32 (INDIRECT_MAC_INDEX_HASHL, MultHashTableLow);\r
IndirectMACWrite32 (INDIRECT_MAC_INDEX_HASHH, MultHashTableHigh);\r
\r
+ ReceiveFilterSetting = (Mode->ReceiveFilterSetting | Enable) & (~Disable);\r
+\r
+ //\r
// Read MAC controller\r
- MacCSRValue = IndirectMACRead32 (INDIRECT_MAC_INDEX_CR);\r
+ //\r
+ MacCSRValue = IndirectMACRead32 (INDIRECT_MAC_INDEX_CR);\r
+ MacCSRValue &= ~(MACCR_HPFILT | MACCR_BCAST | MACCR_PRMS | MACCR_MCPAS);\r
\r
- // Set the options for the MAC_CSR\r
- if (Enable & EFI_SIMPLE_NETWORK_RECEIVE_UNICAST) {\r
- StartRx (0, Snp);\r
+ if (ReceiveFilterSetting & EFI_SIMPLE_NETWORK_RECEIVE_UNICAST) {\r
+ Lan9118SetMacAddress (&Mode->CurrentAddress, Snp);\r
DEBUG ((DEBUG_NET, "Allowing Unicast Frame Reception\n"));\r
+ } else {\r
+ //\r
+ // The Unicast packets do not have to be listen to, set the MAC\r
+ // address of the LAN9118 to be the "not configured" all zeroes\r
+ // ethernet MAC address.\r
+ //\r
+ ZeroMem (&ZeroMac, NET_ETHER_ADDR_LEN);\r
+ Lan9118SetMacAddress (&ZeroMac, Snp);\r
}\r
\r
- if (Disable & EFI_SIMPLE_NETWORK_RECEIVE_UNICAST) {\r
- StopRx (0, Snp);\r
- DEBUG ((DEBUG_NET, "Disabling Unicast Frame Reception\n"));\r
- }\r
-\r
- if (Enable & EFI_SIMPLE_NETWORK_RECEIVE_MULTICAST) {\r
+ if (ReceiveFilterSetting & EFI_SIMPLE_NETWORK_RECEIVE_MULTICAST) {\r
MacCSRValue |= MACCR_HPFILT;\r
DEBUG ((DEBUG_NET, "Allowing Multicast Frame Reception\n"));\r
}\r
\r
- if (Disable & EFI_SIMPLE_NETWORK_RECEIVE_MULTICAST) {\r
- MacCSRValue &= ~MACCR_HPFILT;\r
- DEBUG ((DEBUG_NET, "Disabling Multicast Frame Reception\n"));\r
- }\r
-\r
- if (Enable & EFI_SIMPLE_NETWORK_RECEIVE_BROADCAST) {\r
- MacCSRValue &= ~(MACCR_BCAST);\r
- DEBUG ((DEBUG_NET, "Allowing Broadcast Frame Reception\n"));\r
+ if (ReceiveFilterSetting & EFI_SIMPLE_NETWORK_RECEIVE_PROMISCUOUS_MULTICAST) {\r
+ MacCSRValue |= MACCR_MCPAS;\r
+ DEBUG ((DEBUG_NET, "Enabling Promiscuous Multicast Mode\n"));\r
}\r
\r
- if (Disable & EFI_SIMPLE_NETWORK_RECEIVE_BROADCAST) {\r
+ if ((ReceiveFilterSetting & EFI_SIMPLE_NETWORK_RECEIVE_BROADCAST) == 0) {\r
MacCSRValue |= MACCR_BCAST;\r
- DEBUG ((DEBUG_NET, "Disabling Broadcast Frame Reception\n"));\r
+ } else {\r
+ DEBUG ((DEBUG_NET, "Allowing Broadcast Frame Reception\n"));\r
}\r
\r
- if (Enable & EFI_SIMPLE_NETWORK_RECEIVE_PROMISCUOUS) {\r
+ if (ReceiveFilterSetting & EFI_SIMPLE_NETWORK_RECEIVE_PROMISCUOUS) {\r
MacCSRValue |= MACCR_PRMS;\r
DEBUG ((DEBUG_NET, "Enabling Promiscuous Mode\n"));\r
}\r
\r
- if (Disable & EFI_SIMPLE_NETWORK_RECEIVE_PROMISCUOUS) {\r
- MacCSRValue &= ~MACCR_PRMS;\r
- DEBUG ((DEBUG_NET, "Disabling Promiscuous Mode\n"));\r
- }\r
-\r
- if (Enable & EFI_SIMPLE_NETWORK_RECEIVE_PROMISCUOUS_MULTICAST) {\r
- MacCSRValue |= (MACCR_HPFILT | MACCR_PRMS);\r
- DEBUG ((DEBUG_NET, "Enabling Promiscuous Multicast Mode\n"));\r
- }\r
-\r
- if (Disable & EFI_SIMPLE_NETWORK_RECEIVE_PROMISCUOUS_MULTICAST) {\r
- MacCSRValue &= ~(MACCR_HPFILT | MACCR_PRMS);\r
- DEBUG ((DEBUG_NET, "Disabling Promiscuous Multicast Mode\n"));\r
- }\r
-\r
+ //\r
// Write the options to the MAC_CSR\r
+ //\r
IndirectMACWrite32 (INDIRECT_MAC_INDEX_CR, MacCSRValue);\r
- gBS->Stall (LAN9118_STALL);\r
+ MemoryFence();\r
+\r
+ //\r
+ // If we have to retrieve something, start packet reception.\r
+ //\r
+ Mode->ReceiveFilterSetting = ReceiveFilterSetting;\r
+ if (ReceiveFilterSetting != 0) {\r
+ StartRx (0, Snp);\r
+ }\r
\r
return EFI_SUCCESS;\r
}\r
}\r
}\r
\r
- // Write address\r
- Lan9118SetMacAddress (New, Snp);\r
+ CopyMem (&Snp->Mode->CurrentAddress, New, NET_ETHER_ADDR_LEN);\r
+\r
+ //\r
+ // If packet reception is currently activated, stop and reset it,\r
+ // set the new ethernet address and restart the packet reception.\r
+ // Otherwise, nothing to do, the MAC address will be updated in\r
+ // SnpReceiveFilters() when the UNICAST packet reception will be\r
+ // activated.\r
+ //\r
+ if (Snp->Mode->ReceiveFilterSetting != 0) {\r
+ StopRx (STOP_RX_CLEAR, Snp);\r
+ Lan9118SetMacAddress (New, Snp);\r
+ StartRx (0, Snp);\r
+ }\r
\r
return EFI_SUCCESS;\r
}\r
\r
// Read interrupt status if IrqStat is not NULL\r
if (IrqStat != NULL) {\r
+ *IrqStat = 0;\r
\r
// Check for receive interrupt\r
if (MmioRead32 (LAN9118_INT_STS) & INSTS_RSFL) { // Data moved from rx FIFO\r
*IrqStat |= EFI_SIMPLE_NETWORK_RECEIVE_INTERRUPT;\r
MmioWrite32 (LAN9118_INT_STS,INSTS_RSFL);\r
- } else {\r
- *IrqStat &= ~EFI_SIMPLE_NETWORK_RECEIVE_INTERRUPT;\r
}\r
\r
// Check for transmit interrupt\r
if (MmioRead32 (LAN9118_INT_STS) & INSTS_TSFL) {\r
*IrqStat |= EFI_SIMPLE_NETWORK_TRANSMIT_INTERRUPT;\r
MmioWrite32 (LAN9118_INT_STS,INSTS_TSFL);\r
- } else {\r
- *IrqStat &= ~EFI_SIMPLE_NETWORK_TRANSMIT_INTERRUPT;\r
}\r
\r
// Check for software interrupt\r
if (MmioRead32 (LAN9118_INT_STS) & INSTS_SW_INT) {\r
*IrqStat |= EFI_SIMPLE_NETWORK_SOFTWARE_INTERRUPT;\r
MmioWrite32 (LAN9118_INT_STS,INSTS_SW_INT);\r
- } else {\r
- *IrqStat &= ~EFI_SIMPLE_NETWORK_SOFTWARE_INTERRUPT;\r
}\r
}\r
\r
if (Interrupts & INSTS_TXE) {\r
DEBUG ((EFI_D_ERROR, "LAN9118: Transmitter error. Restarting..."));\r
\r
- // Initiate a software reset\r
+ // Software reset, the TXE interrupt is cleared by the reset.\r
Status = SoftReset (0, Snp);\r
if (EFI_ERROR (Status)) {\r
DEBUG ((EFI_D_ERROR, "\n\tSoft Reset Failed: Hardware Error\n"));\r
return EFI_DEVICE_ERROR;\r
}\r
\r
- // Acknowledge the TXE\r
- MmioWrite32 (LAN9118_INT_STS, INSTS_TXE);\r
- gBS->Stall (LAN9118_STALL);\r
+ // Reactivate the LEDs\r
+ Status = ConfigureHardware (HW_CONF_USE_LEDS, Snp);\r
+ if (EFI_ERROR (Status)) {\r
+ return Status;\r
+ }\r
\r
- // Restart the transmitter\r
+ //\r
+ // Restart the transmitter and if necessary the receiver.\r
+ // Do not ask for FIFO reset as it has already been done\r
+ // by SoftReset().\r
+ //\r
StartTx (START_TX_MAC | START_TX_CFG, Snp);\r
+ if (Snp->Mode->ReceiveFilterSetting != 0) {\r
+ StartRx (0, Snp);\r
+ }\r
}\r
\r
// Update the media status\r
)\r
{\r
LAN9118_DRIVER *LanDriver;\r
+ UINT32 IntSts;\r
UINT32 RxFifoStatus;\r
UINT32 NumPackets;\r
UINT32 RxCfgValue;\r
return EFI_NOT_STARTED;\r
}\r
\r
+ //\r
+ // If the receiver raised the RXE error bit, check if the receiver status\r
+ // FIFO is full and if not just acknowledge the error. The two other\r
+ // conditions to get a RXE error are :\r
+ // . the RX data FIFO is read whereas being empty.\r
+ // . the RX status FIFO is read whereas being empty.\r
+ // The RX data and status FIFO are read by this driver only in the following\r
+ // code of this function. After the readings, the RXE error bit is checked\r
+ // and if raised, the controller is reset. Thus, at this point, we consider\r
+ // that the only valid reason to get an RXE error is the receiver status\r
+ // FIFO being full. And if this is not the case, we consider that this is\r
+ // a spurious error and we just get rid of it. We experienced such 'spurious'\r
+ // errors when running the driver on an A57 on Juno. No valid reason to\r
+ // explain those errors has been found so far and everything seems to\r
+ // work perfectly when they are just ignored.\r
+ //\r
+ IntSts = MmioRead32 (LAN9118_INT_STS);\r
+ if ((IntSts & INSTS_RXE) && (!(IntSts & INSTS_RSFF))) {\r
+ MmioWrite32 (LAN9118_INT_STS, INSTS_RXE);\r
+ }\r
+\r
// Count dropped frames\r
DroppedFrames = MmioRead32 (LAN9118_RX_DROP);\r
LanDriver->Stats.RxDroppedFrames += DroppedFrames;\r
PLength = GET_RXSTATUS_PACKET_LENGTH(RxFifoStatus);\r
LanDriver->Stats.RxTotalBytes += (PLength - 4);\r
\r
- // Check buffer size\r
- if (*BuffSize < PLength) {\r
- *BuffSize = PLength;\r
- return EFI_BUFFER_TOO_SMALL;\r
- }\r
-\r
// If padding is applied, read more DWORDs\r
if (PLength % 4) {\r
Padding = 4 - (PLength % 4);\r
Padding = 0;\r
}\r
\r
+ // Check buffer size\r
+ if (*BuffSize < (PLength + Padding)) {\r
+ *BuffSize = PLength + Padding;\r
+ return EFI_BUFFER_TOO_SMALL;\r
+ }\r
+\r
// Set the amount of data to be transfered out of FIFO for THIS packet\r
// This can be used to trigger an interrupt, and status can be checked\r
RxCfgValue = MmioRead32 (LAN9118_RX_CFG);\r
RawData[Count] = MmioRead32 (LAN9118_RX_DATA);\r
}\r
\r
- // Check for Rx errors (worst possible error)\r
- if (MmioRead32 (LAN9118_INT_STS) & INSTS_RXE) {\r
- DEBUG ((EFI_D_WARN, "Warning: Receiver Error. Restarting...\n"));\r
-\r
- // Initiate a software reset\r
- Status = SoftReset (0, Snp);\r
- if (EFI_ERROR (Status)) {\r
- DEBUG ((EFI_D_ERROR, "Error: Soft Reset Failed: Hardware Error.\n"));\r
- return EFI_DEVICE_ERROR;\r
- }\r
-\r
- // Acknowledge the RXE\r
- MmioWrite32 (LAN9118_INT_STS, INSTS_RXE);\r
- gBS->Stall (LAN9118_STALL);\r
-\r
- // Restart the rx (and do not clear FIFO)\r
- StartRx (0, Snp);\r
-\r
- // Say that command could not be sent\r
- return EFI_DEVICE_ERROR;\r
- }\r
-\r
// Get the destination address\r
if (DstAddr != NULL) {\r
Dst.Addr[0] = (RawData[0] & 0xFF);\r
Src.Addr[3] = (RawData[2] & 0xFF00) >> 8;\r
Src.Addr[4] = (RawData[2] & 0xFF0000) >> 16;\r
Src.Addr[5] = (RawData[2] & 0xFF000000) >> 24;\r
- CopyMem (SrcAddr,&Src, NET_ETHER_ADDR_LEN);\r
+ CopyMem (SrcAddr, &Src, NET_ETHER_ADDR_LEN);\r
}\r
\r
// Get the protocol\r
*Protocol = NTOHS (RawData[3] & 0xFFFF);\r
}\r
\r
+ // Check for Rx errors (worst possible error)\r
+ if (MmioRead32 (LAN9118_INT_STS) & INSTS_RXE) {\r
+ DEBUG ((EFI_D_WARN, "Warning: Receiver Error. Restarting...\n"));\r
+\r
+ // Software reset, the RXE interrupt is cleared by the reset.\r
+ Status = SoftReset (0, Snp);\r
+ if (EFI_ERROR (Status)) {\r
+ DEBUG ((EFI_D_ERROR, "Error: Soft Reset Failed: Hardware Error.\n"));\r
+ return EFI_DEVICE_ERROR;\r
+ }\r
+\r
+ // Reactivate the LEDs\r
+ Status = ConfigureHardware (HW_CONF_USE_LEDS, Snp);\r
+ if (EFI_ERROR (Status)) {\r
+ return Status;\r
+ }\r
+\r
+ //\r
+ // Restart the receiver and the transmitter without reseting the FIFOs\r
+ // as it has been done by SoftReset().\r
+ //\r
+ StartRx (0, Snp);\r
+ StartTx (START_TX_MAC | START_TX_CFG, Snp);\r
+\r
+ // Say that command could not be sent\r
+ return EFI_DEVICE_ERROR;\r
+ }\r
+\r
#if defined(EVAL_PERFORMANCE)\r
UINT64 EndClock = GetPerformanceCounter ();\r
DEBUG ((EFI_D_ERROR, "Receive Time processing: %d counts @ %d Hz\n", StartClock - EndClock,Perf));\r
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