mirror of
https://github.com/reactos/reactos.git
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Sync kdcom from amd64 branch
svn path=/trunk/; revision=43801
This commit is contained in:
Timo Kreuzer
parent
0cf8717f6d
commit
4869ba0006
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@ -216,6 +216,11 @@ KdpSendByte(IN BYTE Byte)
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/* Wait for the port to be ready */
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while ((READ_PORT_UCHAR(ComPortBase + COM_LSR) & LSR_TBE) == 0);
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/* This is needed due to subtle timing issues */
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READ_PORT_UCHAR(ComPortBase + COM_MSR);
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while ((READ_PORT_UCHAR(ComPortBase + COM_LSR) & LSR_TBE) == 0);
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READ_PORT_UCHAR(ComPortBase + COM_MSR);
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/* Send the byte */
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WRITE_PORT_UCHAR(ComPortBase + COM_DAT, Byte);
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}
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@ -224,6 +229,8 @@ KDP_STATUS
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NTAPI
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KdpPollByte(OUT PBYTE OutByte)
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{
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READ_PORT_UCHAR(ComPortBase + COM_MSR); // Timing
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/* Check if data is available */
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if ((READ_PORT_UCHAR(ComPortBase + COM_LSR) & LSR_DR))
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{
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@ -13,6 +13,7 @@
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PFNDBGPRNT KdpDbgPrint = NULL;
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ULONG CurrentPacketId = INITIAL_PACKET_ID | SYNC_PACKET_ID;
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ULONG RemotePacketId = 0;
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/* PRIVATE FUNCTIONS **********************************************************/
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@ -148,24 +149,31 @@ KdReceivePacket(
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KdStatus = KdpReceiveBuffer(&Packet.PacketType, sizeof(USHORT));
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if (KdStatus != KDP_PACKET_RECEIVED)
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{
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/* Didn't receive a PacketType or PacketType is bad. Start over. */
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continue;
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/* Didn't receive a PacketType. */
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return KdStatus;
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}
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/* Check if we got a resend packet */
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if (Packet.PacketLeader == CONTROL_PACKET_LEADER &&
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Packet.PacketType == PACKET_TYPE_KD_RESEND)
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{
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return KDP_PACKET_RESEND;
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}
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/* Step 3 - Read ByteCount */
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KdStatus = KdpReceiveBuffer(&Packet.ByteCount, sizeof(USHORT));
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if (KdStatus != KDP_PACKET_RECEIVED || Packet.ByteCount > PACKET_MAX_SIZE)
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if (KdStatus != KDP_PACKET_RECEIVED)
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{
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/* Didn't receive ByteCount or it's too big. Start over. */
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continue;
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/* Didn't receive ByteCount. */
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return KdStatus;
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}
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/* Step 4 - Read PacketId */
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KdStatus = KdpReceiveBuffer(&Packet.PacketId, sizeof(ULONG));
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if (KdStatus != KDP_PACKET_RECEIVED)
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{
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/* Didn't receive PacketId. Start over. */
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continue;
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/* Didn't receive PacketId. */
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return KdStatus;
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}
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/*
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@ -180,8 +188,8 @@ KdReceivePacket(
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KdStatus = KdpReceiveBuffer(&Packet.Checksum, sizeof(ULONG));
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if (KdStatus != KDP_PACKET_RECEIVED)
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{
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/* Didn't receive Checksum. Start over. */
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continue;
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/* Didn't receive Checksum. */
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return KdStatus;
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}
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/* Step 6 - Handle control packets */
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@ -205,6 +213,7 @@ KdReceivePacket(
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KDDBGPRINT("KdReceivePacket - got a reset packet\n");
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KdpSendControlPacket(PACKET_TYPE_KD_RESET, 0);
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CurrentPacketId = INITIAL_PACKET_ID;
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RemotePacketId = INITIAL_PACKET_ID;
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/* Fall through */
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case PACKET_TYPE_KD_RESEND:
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@ -227,43 +236,18 @@ KdReceivePacket(
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return KDP_PACKET_RECEIVED;
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}
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/* Did we get the right packet type? */
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if (PacketType != Packet.PacketType)
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{
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/* We received something different, start over */
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KDDBGPRINT("KdReceivePacket - wrong PacketType\n");
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KdpSendControlPacket(PACKET_TYPE_KD_RESEND, 0);
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continue;
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}
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/* Get size of the message header */
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switch (Packet.PacketType)
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{
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case PACKET_TYPE_KD_STATE_CHANGE64:
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MessageHeader->Length = sizeof(DBGKD_WAIT_STATE_CHANGE64);
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break;
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MessageHeader->Length = MessageHeader->MaximumLength;
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case PACKET_TYPE_KD_STATE_MANIPULATE:
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MessageHeader->Length = sizeof(DBGKD_MANIPULATE_STATE64);
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break;
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case PACKET_TYPE_KD_DEBUG_IO:
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MessageHeader->Length = sizeof(DBGKD_DEBUG_IO);
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break;
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default:
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KDDBGPRINT("KdReceivePacket - unknown PacketType\n");
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return KDP_PACKET_RESEND;
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}
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//KDDBGPRINT("KdReceivePacket - got normal PacketType\n");
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/* Packet smaller than expected? */
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if (MessageHeader->Length > Packet.ByteCount)
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/* Packet smaller than expected or too big? */
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if (Packet.ByteCount < MessageHeader->Length ||
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Packet.ByteCount > PACKET_MAX_SIZE)
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{
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KDDBGPRINT("KdReceivePacket - too few data (%d) for type %d\n",
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Packet.ByteCount, MessageHeader->Length);
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MessageHeader->Length = Packet.ByteCount;
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KdpSendControlPacket(PACKET_TYPE_KD_RESEND, 0);
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continue;
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}
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//KDDBGPRINT("KdReceivePacket - got normal PacketType, Buffer = %p\n", MessageHeader->Buffer);
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@ -316,15 +300,6 @@ KdReceivePacket(
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}
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}
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/* Compare checksum */
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if (Packet.Checksum != Checksum)
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{
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KDDBGPRINT("KdReceivePacket - wrong cheksum, got %x, calculated %x\n",
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Packet.Checksum, Checksum);
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KdpSendControlPacket(PACKET_TYPE_KD_RESEND, 0);
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continue;
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}
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/* We must receive a PACKET_TRAILING_BYTE now */
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KdStatus = KdpReceiveBuffer(&Byte, sizeof(UCHAR));
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if (KdStatus != KDP_PACKET_RECEIVED || Byte != PACKET_TRAILING_BYTE)
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@ -334,12 +309,36 @@ KdReceivePacket(
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continue;
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}
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/* Compare checksum */
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if (Packet.Checksum != Checksum)
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{
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KDDBGPRINT("KdReceivePacket - wrong cheksum, got %x, calculated %x\n",
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Packet.Checksum, Checksum);
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KdpSendControlPacket(PACKET_TYPE_KD_RESEND, 0);
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continue;
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}
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/* Acknowledge the received packet */
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KdpSendControlPacket(PACKET_TYPE_KD_ACKNOWLEDGE, Packet.PacketId);
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//KDDBGPRINT("KdReceivePacket - all ok\n");
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/* Check if the received PacketId is ok */
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if (Packet.PacketId != RemotePacketId)
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{
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/* Continue with next packet */
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continue;
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}
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return KDP_PACKET_RECEIVED;
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/* Did we get the right packet type? */
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if (PacketType == Packet.PacketType)
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{
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/* Yes, return success */
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//KDDBGPRINT("KdReceivePacket - all ok\n");
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RemotePacketId ^= 1;
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return KDP_PACKET_RECEIVED;
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}
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/* We received something different, ignore it. */
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KDDBGPRINT("KdReceivePacket - wrong PacketType\n");
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}
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return KDP_PACKET_RECEIVED;
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@ -352,10 +351,11 @@ KdSendPacket(
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IN ULONG PacketType,
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IN PSTRING MessageHeader,
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IN PSTRING MessageData,
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IN OUT PKD_CONTEXT Context)
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IN OUT PKD_CONTEXT KdContext)
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{
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KD_PACKET Packet;
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KDP_STATUS KdStatus;
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ULONG Retries;
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/* Initialize a KD_PACKET */
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Packet.PacketLeader = PACKET_LEADER;
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@ -372,7 +372,9 @@ KdSendPacket(
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MessageData->Length);
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}
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for (;;)
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Retries = KdContext->KdpDefaultRetries;
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do
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{
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/* Set the packet id */
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Packet.PacketId = CurrentPacketId;
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@ -394,10 +396,10 @@ KdSendPacket(
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/* Wait for acknowledge */
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KdStatus = KdReceivePacket(PACKET_TYPE_KD_ACKNOWLEDGE,
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NULL,
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NULL,
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0,
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NULL);
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NULL,
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NULL,
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0,
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KdContext);
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/* Did we succeed? */
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if (KdStatus == KDP_PACKET_RECEIVED)
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@ -413,9 +415,14 @@ KdSendPacket(
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return;
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}
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/* Packet timed out, send it again */
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}
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if (KdStatus == KDP_PACKET_TIMEOUT)
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{
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Retries--;
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}
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return;
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/* Packet timed out, send it again */
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KDDBGPRINT("KdSendPacket got KdStatus 0x%x\n", KdStatus);
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}
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while (Retries > 0);
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}
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@ -10,6 +10,7 @@
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<module name="kdserial" type="staticlibrary">
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<include base="kdserial">.</include>
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<library>ntoskrnl</library>
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<file>kdserial.c</file>
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</module>
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@ -124,7 +124,7 @@ KdpReceivePacketLeader(
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/* Check for breakin byte */
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if (Byte == BREAKIN_PACKET_BYTE)
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{
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KdpDbgPrint("BREAKIN_PACKET_BYTE\n");
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KDDBGPRINT("BREAKIN_PACKET_BYTE\n");
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Index = 0;
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Buffer[0] = Byte;
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continue;
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@ -138,7 +138,7 @@ KdpReceivePacketLeader(
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while (Index < 4);
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/* Enable the debugger */
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// KdDebuggerNotPresent = FALSE;
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KdDebuggerNotPresent = FALSE;
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SharedUserData->KdDebuggerEnabled |= 0x00000002;
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/* Return the received packet leader */
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