Add Erik Quanstrom's atazz

(needed to disable power management/head unload on 2.5" drive)

1 files changed, 131 insertions, 0 deletions

diff --git a/sys/src/cmd/atazz/atazz.h b/sys/src/cmd/atazz/atazz.h
new file mode 100644
index 000000000..16c21f1f5
--- /dev/null
+++ b/sys/src/cmd/atazz/atazz.h
@@ -0,0 +1,131 @@
+enum {
+	Cmdn	= 1,
+	Cmdf,			/* cfa only */
+	Cmdp,			/* packet */
+	Cmd5sc,			/* 512-byte sector size, set sector count */
+};
+
+typedef struct Dev Dev;
+struct Dev {
+	Sfis;
+	int	fd;
+	uint	secsize;
+	uvlong	nsect;
+	uvlong	wwn;
+};
+
+enum {
+	Cmdsz	= 18,
+	Replysz	= 18,
+};
+
+typedef struct Rcmd Rcmd;
+struct Rcmd {
+	uchar	sdcmd;		/* sd command; 0xff means ata passthrough */
+	uchar	ataproto;	/* ata protocol.  non-data, pio, reset, dd, etc. */
+	uchar	fis[Fissize];
+};
+
+typedef struct Req Req;
+struct Req {
+	int	rfd;
+	int	wfd;
+	uchar	fmtrw;
+	uvlong	lba;
+	uvlong	count;		/* bytes; allow long sectors to work */
+	uint	nsect;
+	char	haverfis;
+	uint	fisbits;		/* bitmask of manually set fields */
+	Rcmd	cmd;
+	Rcmd	reply;
+	uchar	*data;
+	uchar	raw;
+};
+
+void	sigfmt(Req*);
+void	idfmt(Req*);
+void	iofmt(Req*);
+void	sdfmt(Req*);
+void	smfmt(Req*);
+void	slfmt(Req*);
+void	glfmt(Req*);
+
+typedef struct Btab Btab;
+struct Btab {
+	int	bit;
+	char	*name;
+};
+char	*sebtab(char*, char*, Btab*, int, uint);
+
+typedef struct Txtab Txtab;
+typedef struct Fetab Fetab;
+
+struct Txtab {
+	int	val;
+	char	*name;
+	Fetab	*fe;
+};
+
+struct Fetab {
+	int	reg;
+	Txtab	*tab;
+	int	ntab;
+};
+
+/* sct “registers” */
+enum {
+	Sbase	= 1<<5,
+	Sbyte	= 0<<6,
+	Sw	= 1<<6,
+	Sdw	= 2<<6,
+	Sqw	= 3<<6,
+	Ssz	= 3<<6,
+
+	Saction	= 0 | Sbase | Sw,
+	Sfn	= 1 | Sbase | Sw,
+	Slba	= 2 | Sbase | Sqw,
+	Scnt	= 6 | Sbase | Sqw,
+	Spat	= 10 | Sbase | Sdw,
+	Ssc	= 2 | Sbase | Sw,
+	Stimer	= 3 | Sbase | Sw,
+	Sfe	= 2 | Sbase | Sw,
+	Sstate	= 3 | Sbase | Sw,
+	Soptf	= 4 | Sbase | Sw,
+	Stabid	= 2 | Sbase | Sw,
+
+	Pbase	= 1<<6,
+};
+
+void	pw(uchar*, ushort);
+void	pdw(uchar*, uint);
+void	pqw(uchar*, uvlong);
+ushort	w(uchar*);
+uint	dw(uchar*);
+uvlong	qw(uchar*);
+
+/*
+ * botch.  integrate with fis.h?
+ */
+enum {
+	Psct	= 1<<6 + 8,
+};
+
+typedef struct Atatab Atatab;
+struct Atatab {
+	ushort	cc;
+	uchar	flags;
+	uchar	pktflags;
+	ushort	protocol;
+	Fetab	*tab;
+	void	(*fmt)(Req*);
+	char	*name;
+};
+
+int	eprint(char *, ...);
+int	opendev(char*, Dev*);
+int	probe(void);
+
+extern	int	squelch;
+
+#pragma	varargck	argpos	eprint	1
+#pragma	varargck	type	"π"	char**