Modules/PRO100 - Real hardware testing

[tpg/acess2.git] / KernelLand / Modules / Network / PRO100 / pro100_hw.h

diff --git a/KernelLand/Modules/Network/PRO100/pro100_hw.h b/KernelLand/Modules/Network/PRO100/pro100_hw.h
index cc665c3..625c829 100644 (file)
--- a/KernelLand/Modules/Network/PRO100/pro100_hw.h
+++ b/KernelLand/Modules/Network/PRO100/pro100_hw.h
@@ -8,6 +8,13 @@
 #ifndef _PRO100_HW_H_
 #define _PRO100_HW_H_
 
+// Want at least 5 TX Buffer slots (for TCP)
+// - However, bounce buffers are annoying, so double that
+#define MIN_LOCAL_TXBUFS       5*2
+// - 16 bytes per TX header, plus 8 per buffer, want 16 byte alignment
+// - need to round up to multiple of 2
+#define NUM_LOCAL_TXBUFS       ((MIN_LOCAL_TXBUFS+1)&~(2-1))
+
 enum ePro100_Regs {
        REG_Status,
        REG_Ack,
@@ -38,16 +45,16 @@ struct sCSR
        Uint32  RXDMACount;
 };
 
-#define STATUS_RUS_MASK        0x003C  // Receive Unit Status
-#define STATUS_CUS_MASK        0x00C0  // Comamnd Unit Status
-#define STATUS_FCP     0x0100  // Flow Control Pause
-#define STATUS_ER      0x0200  // Early Recieve
-#define STATUS_SWI     0x0400  // Software Interrupt
-#define STATUS_MDI     0x0800  // Management Data Interrupt
-#define STATUS_RNR     0x1000  // Receive Not Ready
-#define STATUS_CNA     0x2000  // Command Unit not active
-#define STATUS_FR      0x4000  // Frame Recieved
-#define STATUS_CX      0x8000  // Command Unit executed
+#define STATUS_RUS_MASK        0x3C    // Receive Unit Status
+#define STATUS_CUS_MASK        0xC0    // Comamnd Unit Status
+#define ISR_FCP        0x01    // Flow Control Pause
+#define ISR_ER 0x02    // Early Recieve
+#define ISR_SWI        0x04    // Software Interrupt
+#define ISR_MDI        0x08    // Management Data Interrupt
+#define ISR_RNR        0x10    // Receive Not Ready
+#define ISR_CNA        0x20    // Command Unit not active
+#define ISR_FR 0x40    // Frame Recieved
+#define ISR_CX 0x80    // Command Unit executed
 
 #define CMD_RUC        0x0007
 #define CMD_CUC        0x00F0
@@ -95,25 +102,62 @@ enum eCommands {
        CMD_Tx,
 };
 
-typedef struct sCommandUnit
+#define CMD_IOC        (1 << 13)       // Interrupt on completion
+#define CMD_Suspend    (1 << 14)       // Suspend upon completion
+#define CMD_EL (1 << 15)       // Stop upon completion
+
+#define CU_Status_Complete     (1 << 15)
+
+typedef struct sCommandUnit    tCommandUnit;
+
+struct sCommandUnit
 {
        Uint16  Status;
        Uint16  Command;
-       Uint32  Link;
-};
+       Uint32  Link;   // Relative to base
+} PACKED ALIGN(4);
 
-typedef struct sRXBuffer       tRXBuffer;
+typedef struct sTXDescriptor   tTXDescriptor;
+typedef struct sTXBufDesc      tTXBufDesc;
+typedef struct sTXCommand      tTXCommand;
+
+// - Core TX Descriptor
+struct sTXDescriptor
+{
+       tCommandUnit    CU;
+       
+       Uint32  TBDArrayAddr;
+       Uint16  TCBBytes;
+       Uint8   TXThreshold;
+       Uint8   TBDCount;
+} PACKED;
+
+// - TX Buffer descriptor (pointed to by TBDArrayAddr, or following sTXDescriptor)
+struct sTXBufDesc
+{
+       Uint32  Addr;
+       Uint16  Len;
+       Uint16  EndOfList;
+} PACKED;
+
+// - TX Command block (used by static allocation)
+struct sTXCommand
+{
+       tTXDescriptor   Desc;
+       tTXBufDesc      LocalBufs[NUM_LOCAL_TXBUFS];
+} PACKED;
 
+typedef struct sRXBuffer       tRXBuffer;
 struct sRXBuffer
 {
-       Uint16  Status;
-       Uint16  Command;
-       Uint32  Link;   // Base from RX base
+       // Status:
+       // - [1]: ???
+       tCommandUnit    CU;
 
        Uint32  RXBufAddr;      // Unused according to qemu source
        Uint16  Count;
        Uint16  Size;
-} ALIGN(4);
+} PACKED;
 
 #endif