USB mass storage device driver initial implementation

Implemented an initial version of USB mass storage device driver,
supporting USB mass storage devices with SCSI interface and BBB
protocol.  It implements the ATA interface and registers diskovered
LUNs with the disk driver.

1 files changed, 208 insertions, 0 deletions

diff --git a/include/scsi.h b/include/scsi.h
new file mode 100644
index 0000000000..931d03da9d
--- /dev/null
+++ b/include/scsi.h
@@ -0,0 +1,208 @@
+/*
+ * (C) Copyright 2001
+ * Denis Peter, MPL AG Switzerland
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ */
+ #ifndef _SCSI_H
+ #define _SCSI_H
+
+typedef struct SCSI_cmd_block {
+	unsigned char		cmd[16];		/* command */
+	unsigned char		sense_buf[64];		/* for request sense */
+	unsigned char		status;			/* SCSI Status */
+	unsigned char		target;			/* Target ID */
+	unsigned char		lun;			/* Target LUN */
+	unsigned char		cmdlen;			/* command len */
+	unsigned long		datalen;		/* Total data length */
+	unsigned char	*	pdata;			/* pointer to data */
+	unsigned char		msgout[12];		/* Messge out buffer (NOT USED) */
+	unsigned char		msgin[12];		/* Message in buffer */
+	unsigned char		sensecmdlen;		/* Sense command len */
+	unsigned long		sensedatalen;		/* Sense data len */
+	unsigned char		sensecmd[6];		/* Sense command */
+	unsigned long		contr_stat;		/* Controller Status */
+	unsigned long		trans_bytes;		/* tranfered bytes */
+
+	unsigned int		priv;
+} ccb;
+
+/*-----------------------------------------------------------
+**
+**	SCSI  constants.
+**
+**-----------------------------------------------------------
+*/
+
+/*
+**	Messages
+*/
+
+#define	M_COMPLETE	(0x00)
+#define	M_EXTENDED	(0x01)
+#define	M_SAVE_DP	(0x02)
+#define	M_RESTORE_DP	(0x03)
+#define	M_DISCONNECT	(0x04)
+#define	M_ID_ERROR	(0x05)
+#define	M_ABORT		(0x06)
+#define	M_REJECT	(0x07)
+#define	M_NOOP		(0x08)
+#define	M_PARITY	(0x09)
+#define	M_LCOMPLETE	(0x0a)
+#define	M_FCOMPLETE	(0x0b)
+#define	M_RESET		(0x0c)
+#define	M_ABORT_TAG	(0x0d)
+#define	M_CLEAR_QUEUE	(0x0e)
+#define	M_INIT_REC	(0x0f)
+#define	M_REL_REC	(0x10)
+#define	M_TERMINATE	(0x11)
+#define	M_SIMPLE_TAG	(0x20)
+#define	M_HEAD_TAG	(0x21)
+#define	M_ORDERED_TAG	(0x22)
+#define	M_IGN_RESIDUE	(0x23)
+#define	M_IDENTIFY	(0x80)
+
+#define	M_X_MODIFY_DP	(0x00)
+#define	M_X_SYNC_REQ	(0x01)
+#define	M_X_WIDE_REQ	(0x03)
+#define	M_X_PPR_REQ	(0x04)
+
+
+/*
+**	Status
+*/
+
+#define	S_GOOD		(0x00)
+#define	S_CHECK_COND	(0x02)
+#define	S_COND_MET	(0x04)
+#define	S_BUSY		(0x08)
+#define	S_INT		(0x10)
+#define	S_INT_COND_MET	(0x14)
+#define	S_CONFLICT	(0x18)
+#define	S_TERMINATED	(0x20)
+#define	S_QUEUE_FULL	(0x28)
+#define	S_ILLEGAL	(0xff)
+#define	S_SENSE		(0x80)
+
+/*
+ * Sense_keys
+ */
+
+#define SENSE_NO_SENSE		0x0
+#define SENSE_RECOVERED_ERROR	0x1
+#define SENSE_NOT_READY		0x2
+#define SENSE_MEDIUM_ERROR	0x3
+#define SENSE_HARDWARE_ERROR	0x4
+#define SENSE_ILLEGAL_REQUEST	0x5
+#define SENSE_UNIT_ATTENTION	0x6
+#define SENSE_DATA_PROTECT	0x7
+#define SENSE_BLANK_CHECK	0x8
+#define SENSE_VENDOR_SPECIFIC	0x9
+#define SENSE_COPY_ABORTED	0xA
+#define SENSE_ABORTED_COMMAND	0xB
+#define SENSE_VOLUME_OVERFLOW	0xD
+#define SENSE_MISCOMPARE	0xE
+
+
+#define SCSI_CHANGE_DEF	0x40		/* Change Definition (Optional) */
+#define SCSI_COMPARE	0x39		/* Compare (O) */
+#define SCSI_COPY	0x18		/* Copy (O) */
+#define SCSI_COP_VERIFY	0x3A		/* Copy and Verify (O) */
+#define SCSI_INQUIRY	0x12		/* Inquiry (MANDATORY) */
+#define SCSI_LOG_SELECT	0x4C		/* Log Select (O) */
+#define SCSI_LOG_SENSE	0x4D		/* Log Sense (O) */
+#define SCSI_MODE_SEL6	0x15		/* Mode Select 6-byte (Device Specific) */
+#define SCSI_MODE_SEL10	0x55		/* Mode Select 10-byte (Device Specific) */
+#define SCSI_MODE_SEN6	0x1A		/* Mode Sense 6-byte (Device Specific) */
+#define SCSI_MODE_SEN10	0x5A		/* Mode Sense 10-byte (Device Specific) */
+#define SCSI_READ_BUFF	0x3C		/* Read Buffer (O) */
+#define SCSI_REQ_SENSE	0x03		/* Request Sense (MANDATORY) */
+#define SCSI_SEND_DIAG	0x1D		/* Send Diagnostic (O) */
+#define SCSI_TST_U_RDY	0x00		/* Test Unit Ready (MANDATORY) */
+#define SCSI_WRITE_BUFF	0x3B		/* Write Buffer (O) */
+/***************************************************************************
+ *			  %%% Commands Unique to Direct Access Devices %%%
+ ***************************************************************************/
+#define SCSI_COMPARE	0x39		/* Compare (O) */
+#define SCSI_FORMAT	0x04		/* Format Unit (MANDATORY) */
+#define SCSI_LCK_UN_CAC	0x36		/* Lock Unlock Cache (O) */
+#define SCSI_PREFETCH	0x34		/* Prefetch (O) */
+#define SCSI_MED_REMOVL	0x1E		/* Prevent/Allow medium Removal (O) */
+#define SCSI_READ6	0x08		/* Read 6-byte (MANDATORY) */
+#define SCSI_READ10	0x28		/* Read 10-byte (MANDATORY) */
+#define SCSI_RD_CAPAC	0x25		/* Read Capacity (MANDATORY) */
+#define SCSI_RD_DEFECT	0x37		/* Read Defect Data (O) */
+#define SCSI_READ_LONG	0x3E		/* Read Long (O) */
+#define SCSI_REASS_BLK	0x07		/* Reassign Blocks (O) */
+#define SCSI_RCV_DIAG	0x1C		/* Receive Diagnostic Results (O) */
+#define SCSI_RELEASE	0x17		/* Release Unit (MANDATORY) */
+#define SCSI_REZERO	0x01		/* Rezero Unit (O) */
+#define SCSI_SRCH_DAT_E	0x31		/* Search Data Equal (O) */
+#define SCSI_SRCH_DAT_H	0x30		/* Search Data High (O) */
+#define SCSI_SRCH_DAT_L	0x32		/* Search Data Low (O) */
+#define SCSI_SEEK6	0x0B		/* Seek 6-Byte (O) */
+#define SCSI_SEEK10	0x2B		/* Seek 10-Byte (O) */
+#define SCSI_SEND_DIAG	0x1D		/* Send Diagnostics (MANDATORY) */
+#define SCSI_SET_LIMIT	0x33		/* Set Limits (O) */
+#define SCSI_START_STP	0x1B		/* Start/Stop Unit (O) */
+#define SCSI_SYNC_CACHE	0x35		/* Synchronize Cache (O) */
+#define SCSI_VERIFY	0x2F		/* Verify (O) */
+#define SCSI_WRITE6	0x0A		/* Write 6-Byte (MANDATORY) */
+#define SCSI_WRITE10	0x2A		/* Write 10-Byte (MANDATORY) */
+#define SCSI_WRT_VERIFY	0x2E		/* Write and Verify (O) */
+#define SCSI_WRITE_LONG	0x3F		/* Write Long (O) */
+#define SCSI_WRITE_SAME	0x41		/* Write Same (O) */
+
+
+/****************************************************************************
+ * decleration of functions which have to reside in the LowLevel Part Driver
+ */
+
+void scsi_print_error(ccb *pccb);
+int scsi_exec(ccb *pccb);
+void scsi_bus_reset(void);
+void scsi_low_level_init(int busdevfunc);
+
+
+/***************************************************************************
+ * functions residing inside cmd_scsi.c
+ */
+void scsi_init(void);
+
+
+#define SCSI_IDENTIFY				0xC0  /* not used */
+
+/* Hardware errors  */
+#define SCSI_SEL_TIME_OUT		 0x00000101  /* Selection time out */
+#define SCSI_HNS_TIME_OUT		 0x00000102  /* Handshake */
+#define SCSI_MA_TIME_OUT		 0x00000103  /* Phase error */
+#define SCSI_UNEXP_DIS			 0x00000104  /* unexpected disconnect */
+
+#define SCSI_INT_STATE			 0x00010000  /* unknown Interrupt number is stored in 16 LSB */
+
+
+#ifndef TRUE
+#define TRUE 1
+#endif
+#ifndef FALSE
+#define FALSE 0
+#endif
+
+#endif /* _SCSI_H */