first usable version of kernel and commands

After an year of hard work, this is a first "usable" version of Jehanne.
2016-11-25 16:18:40 +00:00
parent 391252a059
commit 38aca7a581
3989 changed files with 406697 additions and 1909 deletions
--- a/sys/include/usb/ums.h
+++ b/sys/include/usb/ums.h
@@ -0,0 +1,115 @@
+/*
+ * This file is part of the UCB release of Plan 9. It is subject to the license
+ * terms in the LICENSE file found in the top-level directory of this
+ * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No
+ * part of the UCB release of Plan 9, including this file, may be copied,
+ * modified, propagated, or distributed except according to the terms contained
+ * in the LICENSE file.
+ */
+
+/*
+ * mass storage transport protocols and subclasses,
+ * from usb mass storage class specification overview rev 1.2
+ */
+
+typedef struct Umsc Umsc;
+typedef struct Ums Ums;
+typedef struct Cbw Cbw;			/* command block wrapper */
+typedef struct Csw Csw;			/* command status wrapper */
+
+enum
+{
+	Protocbi =	0,	/* control/bulk/interrupt; mainly floppies */
+	Protocb =	1,	/*   "  with no interrupt; mainly floppies */
+	Protobulk =	0x50,	/* bulk only */
+
+	Subrbc =	1,	/* reduced blk cmds */
+	Subatapi =	2,	/* cd/dvd using sff-8020i or mmc-2 cmd blks */
+	Subqic 	=	3,	/* QIC-157 tapes */
+	Subufi =	4,	/* floppy */
+	Sub8070 =	5,	/* removable media, atapi-like */
+	Subscsi =	6,	/* scsi transparent cmd set */
+	Subisd200 =	7,	/* ISD200 ATA */
+	Subdev =	0xff,	/* use device's value */
+
+	Umsreset =	0xFF,
+	Getmaxlun =	0xFE,
+
+//	Maxlun		= 256,
+	Maxlun		= 32,
+
+	CMreset = 1,
+
+	Pcmd = 0,
+	Pdata,
+	Pstatus,
+
+	CbwLen		= 31,
+	CbwDataIn	= 0x80,
+	CbwDataOut	= 0x00,
+	CswLen		= 13,
+	CswOk		= 0,
+	CswFailed	= 1,
+	CswPhaseErr	= 2,
+};
+
+/*
+ * corresponds to a lun.
+ * these are ~600+Maxiosize bytes each; ScsiReq is not tiny.
+ */
+struct Umsc
+{
+	ScsiReq;
+	uint64_t	blocks;
+	int64_t	capacity;
+
+	/* from setup */
+	char	*bufp;
+	long	off;		/* offset within a block */
+	long	nb;		/* byte count */
+
+	uint8_t 	rawcmd[16];
+	uint8_t	phase;
+	char	*inq;
+	Ums	*ums;
+	Usbfs	fs;
+	char	buf[Maxiosize];
+};
+
+struct Ums
+{
+	QLock;
+	Dev	*dev;
+	Dev	*epin;
+	Dev	*epout;
+	Umsc	*lun;
+	uint8_t	maxlun;
+	int	seq;
+	int	nerrs;
+	int	wrongresidues;
+};
+
+/*
+ * USB transparent SCSI devices
+ */
+struct Cbw
+{
+	char	signature[4];		/* "USBC" */
+	long	tag;
+	long	datalen;
+	uint8_t	flags;
+	uint8_t	lun;
+	uint8_t	len;
+	char	command[16];
+};
+
+struct Csw
+{
+	char	signature[4];		/* "USBS" */
+	long	tag;
+	long	dataresidue;
+	uint8_t	status;
+};
+
+
+int	diskmain(Dev*, int, char**);