Add Erik Quanstrom's atazz

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

1 files changed, 71 insertions, 0 deletions

diff --git a/sys/src/cmd/atazz/bit.c b/sys/src/cmd/atazz/bit.c
new file mode 100644
index 000000000..9e1f39352
--- /dev/null
+++ b/sys/src/cmd/atazz/bit.c
@@ -0,0 +1,71 @@
+#include <u.h>
+#include <libc.h>
+#include <fis.h>
+#include "atazz.h"
+
+char*
+sebtab(char *p, char *e, Btab *t, int nt, uint u)
+{
+	char *p0;
+	int i;
+
+	p0 = p;
+	for(i = 0; i < nt; i++)
+		if(u & 1<< t[i].bit)
+			p = seprint(p, e, "%s ", t[i].name);
+	if(p > p0)
+		p--;
+	*p = 0;
+	return p;
+}
+
+void
+pw(uchar *p, ushort i)
+{
+	p[0] = i >> 0;
+	p[1] = i >> 8;
+}
+
+void
+pdw(uchar *p, uint i)
+{
+	p[0] = i >> 0;
+	p[1] = i >> 8;
+	p[2] = i >> 16;
+	p[3] = i >> 24;
+}
+
+void
+pqw(uchar *p, uvlong i)
+{
+	pdw(p, i);
+	pdw(p + 4, i >> 32);
+}
+
+ushort
+w(uchar *u)
+{
+	ushort r;
+
+	r = u[0] << 0;
+	r |= u[1] << 8;
+	return r;
+}
+
+uint
+dw(uchar *u)
+{
+	ulong r;
+
+	r = u[0] << 0;
+	r |= u[1] << 8;
+	r |= u[2] << 16;
+	r |= u[3] << 24;
+	return r;
+}
+
+uvlong
+qw(uchar *u)
+{
+	return dw(u) | (uvlong)dw(u + 4)<<32;
+}