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utility/msc.h

+/*
+ * MSC Teensy36 USB Host Mass Storage library
+ * Copyright (c) 2017-2019 Warren Watson.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+ 
+ // msc.h
+
+#ifndef _MSC_H_
+#define _MSC_H_
+
+// SCSI Commands (minimal set)
+#define CBW_SIGNATURE	    0x43425355UL
+#define CSW_SIGNATURE	    0x53425355UL
+#define CMD_DIR_DATA_OUT	0x00
+#define CMD_DIR_DATA_IN	    0x80
+#define CMD_RD_CAPACITY_10	0x25
+#define CMD_INQUIRY         0x12
+#define CMD_RD_10			0x28
+#define CMD_WR_10			0x2A
+#define CMD_TEST_UNIT_READY 0x00
+#define CMD_REQUEST_SENSE   0x03
+#define CMD_START_STOP_UNIT 0x1B
+#define CMD_REPORT_LUNS     0xA0
+#define NO_RD_WR			0x00 // transfer type is not read or write blocks.
+
+// Command Status Wrapper Error Codes
+#define	MS_CBW_PASS 		0
+#define	MS_CBW_FAIL  		1
+#define	MS_CBW_PHASE_ERROR	2
+#define MS_CSW_TAG_ERROR	253
+#define MS_CSW_SIG_ERROR	254
+#define MS_SCSI_ERROR		255
+
+// SCSI Sense Key codes
+#define MS_NOT_READY		0x02
+#define MS_MEDIUM_ERROR		0x03
+#define MS_ILLEGAL_REQUEST	0x05
+#define MS_UNIT_ATTENTION	0x06
+#define MS_LBA_OUT_OF_RANGE 0x21
+#define MS_MEDIA_CHANGED    0x28
+#define MS_MEDIUM_NOT_PRESENT  0x3A
+
+// SCSI Error Codes
+#define MS_MEDIA_CHANGED_ERR 0x2A
+#define MS_NO_MEDIA_ERR		0x28
+#define MS_UNIT_NOT_READY	0x23
+#define MS_BAD_LBA_ERR		0x29
+#define MS_CMD_ERR			0x26
+
+#define	MS_INIT_PASS 		0
+
+#define MAXLUNS				16
+#define MEDIA_READY_TIMEOUT	1000
+#define MSC_CONNECT_TIMEOUT 4000
+
+// Command Block Wrapper Struct
+typedef struct
+{
+	uint32_t Signature;
+	uint32_t Tag;
+	uint32_t TransferLength;
+	uint8_t Flags;
+	uint8_t LUN;
+	uint8_t CommandLength;
+	uint8_t CommandData[16];
+}  __attribute__((packed)) msCommandBlockWrapper_t;
+
+// MSC Command Status Wrapper Struct
+typedef struct
+{
+	uint32_t Signature;
+	uint32_t Tag;
+	uint32_t DataResidue;
+	uint8_t  Status;
+}  __attribute__((packed)) msCommandStatusWrapper_t;
+
+// MSC Device Capacity Struct
+typedef struct
+{
+	uint32_t Blocks;
+	uint32_t BlockSize;
+} msSCSICapacity_t;
+
+// MSC Inquiry Command Reponse Struct
+typedef struct
+{
+	unsigned DeviceType          : 5;
+	unsigned PeripheralQualifier : 3;
+	unsigned Reserved            : 7;
+	unsigned Removable           : 1;
+	uint8_t  Version;
+	unsigned ResponseDataFormat  : 4;
+	unsigned Reserved2           : 1;
+	unsigned NormACA             : 1;
+	unsigned TrmTsk              : 1;
+	unsigned AERC                : 1;
+	uint8_t  AdditionalLength;
+	uint8_t  Reserved3[2];
+	unsigned SoftReset           : 1;
+	unsigned CmdQue              : 1;
+	unsigned Reserved4           : 1;
+	unsigned Linked              : 1;
+	unsigned Sync                : 1;
+	unsigned WideBus16Bit        : 1;
+	unsigned WideBus32Bit        : 1;
+	unsigned RelAddr             : 1;
+	uint8_t  VendorID[8];
+	uint8_t  ProductID[16];
+	uint8_t  RevisionID[4];
+}  __attribute__((packed)) msInquiryResponse_t;
+
+// Request Sense Response Struct
+typedef struct
+{
+	uint8_t  ResponseCode;
+	uint8_t  SegmentNumber;
+	unsigned SenseKey            : 4;
+	unsigned Reserved            : 1;
+	unsigned ILI                 : 1;
+	unsigned EOM                 : 1;
+	unsigned FileMark            : 1;
+	uint8_t  Information[4];
+	uint8_t  AdditionalLength;
+	uint8_t  CmdSpecificInformation[4];
+	uint8_t  AdditionalSenseCode;
+	uint8_t  AdditionalSenseQualifier;
+	uint8_t  FieldReplaceableUnitCode;
+	uint8_t  SenseKeySpecific[3];
+	uint8_t  padding[234];
+}  __attribute__((packed)) msRequestSenseResponse_t;
+
+// MSC Drive status/info struct
+typedef struct {
+	bool connected   = false; // Device is connected
+	bool initialized = false; // Device is initialized
+	bool mounted     = false; // Device is mounted
+	const char * drvName = 0;
+	uint32_t bufferSize = 0;
+	uint8_t hubNumber;
+	uint8_t hubPort;
+	uint8_t deviceAddress;
+	uint16_t idVendor;
+	uint16_t idProduct;
+	msSCSICapacity_t capacity;
+	msInquiryResponse_t inquiry;	
+} __attribute__((packed)) msDriveInfo_t;
+
+#endif //_MSC_H_