[PATCH 11/17] OvmfPkg/PvScsiDxe: Define device interface structures and constants

["Liran Alon" <liran.alon@oracle.com>]

These definitions will be used by the following commits to complete the
implementation of PVSCSI device driver.

Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=2567
Reviewed-by: Nikita Leshenko <nikita.leshchenko@oracle.com>
Signed-off-by: Liran Alon <liran.alon@oracle.com>
---
 OvmfPkg/Include/IndustryStandard/PvScsi.h | 162 ++++++++++++++++++++++
 1 file changed, 162 insertions(+)

diff --git a/OvmfPkg/Include/IndustryStandard/PvScsi.h b/OvmfPkg/Include/IndustryStandard/PvScsi.h
index 004c0af84989..7bb6e664dfcd 100644
--- a/OvmfPkg/Include/IndustryStandard/PvScsi.h
+++ b/OvmfPkg/Include/IndustryStandard/PvScsi.h
@@ -18,4 +18,166 @@
 #define PCI_VENDOR_ID_VMWARE            (0x15ad)
 #define PCI_DEVICE_ID_VMWARE_PVSCSI     (0x07c0)
 
+//
+// CDB (Command Descriptor Block) with size above this constant
+// should be considered out-of-band
+//
+#define PVSCSI_CDB_MAX_SIZE         (16)
+
+enum PVSCSI_BAR0_OFFSETS {
+  PVSCSI_REG_OFFSET_COMMAND        =    0x0,
+  PVSCSI_REG_OFFSET_COMMAND_DATA   =    0x4,
+  PVSCSI_REG_OFFSET_COMMAND_STATUS =    0x8,
+  PVSCSI_REG_OFFSET_LAST_STS_0     =  0x100,
+  PVSCSI_REG_OFFSET_LAST_STS_1     =  0x104,
+  PVSCSI_REG_OFFSET_LAST_STS_2     =  0x108,
+  PVSCSI_REG_OFFSET_LAST_STS_3     =  0x10c,
+  PVSCSI_REG_OFFSET_INTR_STATUS    = 0x100c,
+  PVSCSI_REG_OFFSET_INTR_MASK      = 0x2010,
+  PVSCSI_REG_OFFSET_KICK_NON_RW_IO = 0x3014,
+  PVSCSI_REG_OFFSET_DEBUG          = 0x3018,
+  PVSCSI_REG_OFFSET_KICK_RW_IO     = 0x4018,
+};
+
+//
+// Define Interrupt-Status register flags
+//
+#define PVSCSI_INTR_CMPL_0      (1 << 0)
+#define PVSCSI_INTR_CMPL_1      (1 << 1)
+#define PVSCSI_INTR_CMPL_MASK   (PVSCSI_INTR_CMPL_0 | PVSCSI_INTR_CMPL_1)
+
+enum PVSCSI_COMMANDS {
+  PVSCSI_CMD_FIRST             = 0,
+  PVSCSI_CMD_ADAPTER_RESET     = 1,
+  PVSCSI_CMD_ISSUE_SCSI        = 2,
+  PVSCSI_CMD_SETUP_RINGS       = 3,
+  PVSCSI_CMD_RESET_BUS         = 4,
+  PVSCSI_CMD_RESET_DEVICE      = 5,
+  PVSCSI_CMD_ABORT_CMD         = 6,
+  PVSCSI_CMD_CONFIG            = 7,
+  PVSCSI_CMD_SETUP_MSG_RING    = 8,
+  PVSCSI_CMD_DEVICE_UNPLUG     = 9,
+  PVSCSI_CMD_LAST              = 10
+};
+
+#define PVSCSI_SETUP_RINGS_MAX_NUM_PAGES    (32)
+
+#pragma pack (1)
+typedef struct {
+  UINT32 ReqRingNumPages;
+  UINT32 CmpRingNumPages;
+  UINT64 RingsStatePPN;
+  UINT64 ReqRingPPNs[PVSCSI_SETUP_RINGS_MAX_NUM_PAGES];
+  UINT64 CmpRingPPNs[PVSCSI_SETUP_RINGS_MAX_NUM_PAGES];
+} PVSCSI_CMD_DESC_SETUP_RINGS;
+#pragma pack ()
+
+#define PVSCSI_MAX_CMD_DATA_WORDS   \
+  (sizeof (PVSCSI_CMD_DESC_SETUP_RINGS) / sizeof (UINT32))
+
+#pragma pack (1)
+typedef struct {
+  UINT32 ReqProdIdx;
+  UINT32 ReqConsIdx;
+  UINT32 ReqNumEntriesLog2;
+
+  UINT32 CmpProdIdx;
+  UINT32 CmpConsIdx;
+  UINT32 CmpNumEntriesLog2;
+
+  UINT8  Pad[104];
+
+  UINT32 MsgProdIdx;
+  UINT32 MsgConsIdx;
+  UINT32 MsgNumEntriesLog2;
+} PVSCSI_RINGS_STATE;
+#pragma pack ()
+
+//
+// Define PVSCSI request descriptor tags
+//
+#define PVSCSI_SIMPLE_QUEUE_TAG            (0x20)
+
+//
+// Define PVSCSI request descriptor flags
+//
+#define PVSCSI_FLAG_CMD_WITH_SG_LIST       (1 << 0)
+#define PVSCSI_FLAG_CMD_OUT_OF_BAND_CDB    (1 << 1)
+#define PVSCSI_FLAG_CMD_DIR_NONE           (1 << 2)
+#define PVSCSI_FLAG_CMD_DIR_TOHOST         (1 << 3)
+#define PVSCSI_FLAG_CMD_DIR_TODEVICE       (1 << 4)
+
+#pragma pack (1)
+typedef struct {
+  UINT64 Context;
+  UINT64 DataAddr;
+  UINT64 DataLen;
+  UINT64 SenseAddr;
+  UINT32 SenseLen;
+  UINT32 Flags;
+  UINT8  Cdb[16];
+  UINT8  CdbLen;
+  UINT8  Lun[8];
+  UINT8  Tag;
+  UINT8  Bus;
+  UINT8  Target;
+  UINT8  vCPUHint;
+  UINT8  Unused[59];
+} PVSCSI_RING_REQ_DESC;
+#pragma pack ()
+
+//
+// Host adapter status/error codes
+//
+enum PVSCSI_HOST_BUS_ADAPTER_STATUS {
+   BTSTAT_SUCCESS       = 0x00,  // CCB complete normally with no errors
+   BTSTAT_LINKED_COMMAND_COMPLETED           = 0x0a,
+   BTSTAT_LINKED_COMMAND_COMPLETED_WITH_FLAG = 0x0b,
+   BTSTAT_DATA_UNDERRUN = 0x0c,
+   BTSTAT_SELTIMEO      = 0x11,  // SCSI selection timeout
+   BTSTAT_DATARUN       = 0x12,  // Data overrun/underrun
+   BTSTAT_BUSFREE       = 0x13,  // Unexpected bus free
+   BTSTAT_INVPHASE      = 0x14,  //
+                                 // Invalid bus phase or sequence requested by
+                                 // target
+                                 //
+   BTSTAT_LUNMISMATCH   = 0x17,  // Linked CCB has different LUN from first CCB
+   BTSTAT_SENSFAILED    = 0x1b,  // Auto request sense failed
+   BTSTAT_TAGREJECT     = 0x1c,  //
+                                 // SCSI II tagged queueing message rejected by
+                                 // target
+                                 //
+   BTSTAT_BADMSG        = 0x1d,  //
+                                 // Unsupported message received by the host
+                                 // adapter
+                                 //
+   BTSTAT_HAHARDWARE    = 0x20,  // Host adapter hardware failed
+   BTSTAT_NORESPONSE    = 0x21,  //
+                                 // Target did not respond to SCSI ATN sent a
+                                 // SCSI RST
+                                 //
+   BTSTAT_SENTRST       = 0x22,  // Host adapter asserted a SCSI RST
+   BTSTAT_RECVRST       = 0x23,  // Other SCSI devices asserted a SCSI RST
+   BTSTAT_DISCONNECT    = 0x24,  //
+                                 // Target device reconnected improperly
+                                 // (w/o tag)
+                                 //
+   BTSTAT_BUSRESET      = 0x25,  // Host adapter issued BUS device reset
+   BTSTAT_ABORTQUEUE    = 0x26,  // Abort queue generated
+   BTSTAT_HASOFTWARE    = 0x27,  // Host adapter software error
+   BTSTAT_HATIMEOUT     = 0x30,  // Host adapter hardware timeout error
+   BTSTAT_SCSIPARITY    = 0x34,  // SCSI parity error detected
+};
+
+#pragma pack (1)
+typedef struct {
+  UINT64 Context;
+  UINT64 DataLen;
+  UINT32 SenseLen;
+  UINT16 HostStatus;
+  UINT16 ScsiStatus;
+  UINT32 Pad[2];
+} PVSCSI_RING_CMP_DESC;
+#pragma pack ()
+
 #endif // __PVSCSI_H_
-- 
2.20.1