1 files changed, 169 insertions, 0 deletions
diff --git a/src/twa.h b/src/twa.h
new file mode 100644
index 0000000..413e70b
--- /dev/null
+++ b/src/twa.h
@@ -0,0 +1,169 @@
+/*
+ * twa.h:
+ *
+ * Copyright (c) 2017 James McKenzie <foss@madingley.org>,
+ * All rights reserved.
+ *
+ */
+
+#ifndef _TWA_H_
+#define _TWA_H_
+
+#define TWA_PACKED __attribute__ (( packed ))
+
+typedef uint64_t dma_addr_t;
+
+
+#define TW_SENSE_DATA_LENGTH                  18
+
+#define TW_COMMAND_SIZE (sizeof(dma_addr_t) > 4 ? 5 : 4)
+#define TW_APACHE_MAX_SGL_LENGTH (sizeof(dma_addr_t) > 4 ? 72 : 109)
+#define TW_ESCALADE_MAX_SGL_LENGTH (sizeof(dma_addr_t) > 4 ? 41 : 62)
+#define TW_PADDING_LENGTH (sizeof(dma_addr_t) > 4 ? 8 : 0)
+
+typedef struct TWA_PACKED TAG_TW_SG_Entry
+{
+  dma_addr_t address;
+  uint32_t length;
+} TW_SG_Entry;
+
+
+typedef struct TWA_PACKED TAG_TW_Command_Apache_Header
+{
+  unsigned char sense_data[TW_SENSE_DATA_LENGTH];
+  struct TWA_PACKED
+  {
+    char reserved[4];
+    unsigned short error;
+    unsigned char padding;
+    unsigned char severity__reserved;
+  } status_block;
+  unsigned char err_specific_desc[98];
+  struct TWA_PACKED
+  {
+    unsigned char size_header;
+    unsigned short reserved;
+    unsigned char size_sense;
+  } header_desc;
+} TW_Command_Apache_Header;
+
+
+/* Command Packet */
+typedef struct TWA_PACKED TW_Command
+{
+  /* First DWORD */
+  struct TWA_PACKED
+  {
+    unsigned char opcode:5;
+    unsigned char sgl_offset:3;
+  } byte0;
+  unsigned char size;
+  unsigned char request_id;
+  struct TWA_PACKED
+  {
+    unsigned char unit:4;
+    unsigned char host_id:4;
+  } byte3;
+  /* Second DWORD */
+  unsigned char status;
+  unsigned char flags;
+
+  union
+  {
+    unsigned short block_count;
+    unsigned short parameter_count;
+    unsigned short message_credits;
+  } byte6;
+  union
+  {
+    struct TWA_PACKED
+    {
+      uint32_t lba;
+      TW_SG_Entry sgl[TW_ESCALADE_MAX_SGL_LENGTH];
+      dma_addr_t padding;
+    } io;
+    struct
+    {
+      TW_SG_Entry sgl[TW_ESCALADE_MAX_SGL_LENGTH];
+      uint32_t padding;
+      dma_addr_t padding2;
+    } param;
+  } byte8_offset;
+} TW_Command;
+
+typedef struct TWA_PACKED TAG_TW_Command_Apache
+{
+  unsigned char opcode__reserved;
+  unsigned char unit;
+  unsigned short request_id__lunl;
+  unsigned char status;
+  unsigned char sgl_offset;
+  unsigned short sgl_entries__lunh;
+  unsigned char cdb[16];
+  TW_SG_Entry sg_list[TW_APACHE_MAX_SGL_LENGTH];
+  unsigned char padding[TW_PADDING_LENGTH];
+} TW_Command_Apache;
+
+
+typedef struct TWA_PACKED TAG_TW_Command_Full
+{
+  TW_Command_Apache_Header header;
+  union
+  {
+    TW_Command oldcommand;
+    TW_Command_Apache newcommand;
+  } command;
+} TW_Command_Full;
+
+
+
+typedef struct TWA_PACKED TAG_TW_Ioctl_Driver_Command
+{
+  unsigned int control_code;
+  unsigned int status;
+  unsigned int unique_id;
+  unsigned int sequence_id;
+  unsigned int os_specific;
+  unsigned int buffer_length;
+} TW_Ioctl_Driver_Command;
+
+
+
+typedef struct TWA_PACKED TAG_TW_Ioctl_Apache
+{
+  TW_Ioctl_Driver_Command driver_command;
+  char padding[488];
+  TW_Command_Full firmware_command;
+  char data_buffer[0];
+} TW_Ioctl_Buf_Apache;
+
+typedef struct TWA_PACKED
+{
+  unsigned short table_id;
+  unsigned short parameter_id;
+  unsigned short parameter_size_bytes;
+  unsigned short actual_parameter_size_bytes;
+  unsigned char data[0];
+} TW_Param_Apache, *PTW_Param_Apache;
+
+typedef struct
+{
+  uint8_t resv;
+  uint8_t tw_sec;
+  uint8_t tw_min;
+  uint8_t tw_hour;
+  uint8_t tw_day;
+  uint8_t tw_month;
+  uint16_t tw_year;
+} TW_DateTime;
+
+#define TW_IOCTL_FIRMWARE_PASS_THROUGH 0x108
+
+#define TW_OP_GET_PARAM       0x12
+#define TW_OP_SET_PARAM       0x13
+
+#define TW_TIMEKEEP_TABLE                     0x040A
+#define TW_TIMEKEEP_DATETIME			0x4
+
+
+#endif /* _TWA_H_ */