nusb/ether: add aue driver for admtek pegasus usb ethernet adapter

3 files changed, 257 insertions, 2 deletions

diff --git a/sys/src/cmd/nusb/ether/aue.c b/sys/src/cmd/nusb/ether/aue.c
new file mode 100644
index 000000000..44719222f
--- /dev/null
+++ b/sys/src/cmd/nusb/ether/aue.c
@@ -0,0 +1,254 @@
+/*
+* admtek pegasus driver copy-pasted from bill paul's
+* openbsd/freebsd aue(4) driver, with help
+* from the datasheet and petko manolov's linux
+* drivers/net/usb/pegasus.c driver
+*/
+#include <u.h>
+#include <libc.h>
+#include <thread.h>
+#include <bio.h>
+#include <auth.h>
+#include <fcall.h>
+#include <9p.h>
+
+#include "usb.h"
+#include "dat.h"
+
+enum {
+	Readreg = 0xf0,
+	Writereg = 0xf1,
+
+	Ctl0 = 0x00,
+	C0incrxcrc = 1 << 0,
+	C0allmulti = 1 << 1,
+	C0stopbackoff = 1 << 2,
+	C0rxstatappend = 1 << 3,
+	C0wakeonen = 1 << 4,
+	C0rxpauseen = 1 << 5,
+	C0rxen = 1 << 6,
+	C0txen = 1 << 7,
+
+	Ctl1 = 0x01,
+	C1homelan = 1 << 2,
+	C1resetmac = 1 << 3,
+	C1speedsel = 1 << 4,
+	C1duplex = 1 << 5,
+	C1delayhome = 1 << 6,
+
+	Ctl2 = 0x02,
+	C2ep3clr = 1 << 0,
+	C2rxbadpkt = 1 << 1,
+	C2prom = 1 << 2,
+	C2loopback = 1 << 3,
+	C2eepromwren = 1 << 4,
+	C2eepromload = 1 << 5,
+
+	Par = 0x10,
+
+	Eereg = 0x20,
+	Eedata = 0x21,
+
+	Eectl = 0x23,
+	Eectlwr = 1 << 0,
+	Eectlrd = 1 << 1,
+	Eectldn = 1 << 2,
+
+	Phyaddr = 0x25,
+	Phydata = 0x26,
+
+	Phyctl = 0x28,
+	Phyctlphyreg = 0x1f,
+	Phyctlwr = 1 << 5,
+	Phyctlrd = 1 << 6,
+	Phyctldn = 1 << 7,
+
+	Gpio0 = 0x7e,
+	Gpio1 = 0x7f,
+	Gpioin0 = 1 << 0,
+	Gpioout0 = 1 << 1,
+	Gpiosel0 = 1 << 2,
+	Gpioin1 = 1 << 3,
+	Gpioout1 = 1 << 4,
+	Gpiosel1 = 1 << 5,
+
+	Rxerror = 0x1e << 16,
+
+	Timeout = 1000
+};
+
+static int csr8r(Dev *, int);
+static int csr16r(Dev *, int);
+static int csr8w(Dev *, int, int);
+static int csr16w(Dev *, int, int);
+static int eeprom16r(Dev *, int);
+static void reset(Dev *);
+static int aueread(Dev *, uchar *, int);
+static void auewrite(Dev *, uchar *, int);
+
+static int
+csr8r(Dev *d, int reg)
+{
+	int rc;
+	uchar v;
+
+	rc = usbcmd(d, Rd2h|Rvendor|Rdev, Readreg,
+		0, reg, &v, sizeof v);
+	if(rc < 0) {
+		fprint(2, "%s: csr8r(%#x): %r\n",
+			argv0, reg);
+		return 0;
+	}
+	return v;
+}
+
+static int
+csr16r(Dev *d, int reg)
+{
+	int rc;
+	uchar v[2];
+
+	rc = usbcmd(d, Rd2h|Rvendor|Rdev, Readreg,
+		0, reg, v, sizeof v);
+	if(rc < 0) {
+		fprint(2, "%s: csr16r(%#x): %r\n",
+			argv0, reg);
+		return 0;
+	}
+	return GET2(v);
+}
+
+static int
+csr8w(Dev *d, int reg, int val)
+{
+	int rc;
+	uchar v;
+	
+	v = val;
+	rc = usbcmd(d, Rh2d|Rvendor|Rdev, Writereg,
+		val&0xff, reg, &v, sizeof v);
+	if(rc < 0) {
+		fprint(2, "%s: csr8w(%#x, %#x): %r\n",
+			argv0, reg, val);
+	}
+	return rc;
+}
+
+static int
+csr16w(Dev *d, int reg, int val)
+{
+	int rc;
+	uchar v[2];
+
+	PUT2(v, val);
+	rc = usbcmd(d, Rh2d|Rvendor|Rdev, Writereg,
+		val&0xffff, reg, v, sizeof v);
+	if(rc < 0) {
+		fprint(2, "%s: csr16w(%#x, %#x): %r\n",
+			argv0, reg, val);
+	}
+	return rc;
+}
+
+static int
+eeprom16r(Dev *d, int off)
+{
+	int i;
+
+	csr8w(d, Eereg, off);
+	csr8w(d, Eectl, Eectlrd);
+	for(i = 0; i < Timeout; i++) {
+		if(csr8r(d, Eectl) & Eectldn)
+			break;
+	}
+	if(i >= Timeout) {
+		fprint(2, "%s: EEPROM read timed out\n",
+			argv0);
+	}
+	return csr16r(d, Eedata);
+}
+
+static void
+reset(Dev *d)
+{
+	int i;
+
+	csr8w(d, Ctl1, csr8r(d, Ctl1)|C1resetmac);
+	for(i = 0; i < Timeout; i++) {
+		if(!(csr8r(d, Ctl1) & C1resetmac))
+			break;
+	}
+	if(i >= Timeout)
+		fprint(2, "%s: reset failed\n", argv0);
+	csr8w(d, Gpio0, Gpiosel0|Gpiosel1);
+	csr8w(d, Gpio0, Gpiosel0|Gpiosel1|Gpioout0);
+	sleep(10);
+}
+
+static int
+aueread(Dev *ep, uchar *p, int plen)
+{
+	int n;
+	uint hd;
+	uchar *q;
+
+	if(nbin < 4)
+		nbin = read(ep->dfd, bin, sizeof bin);
+	if(nbin < 0)
+		return -1;
+	if(nbin < 4)
+		return 0;
+	q = bin + nbin - 4;
+	hd = GET4(q);
+	n = hd & 0xfff;
+	if(n < 6 || n > nbin) {
+		nbin = 0;
+		return 0;
+	}
+	if(hd & Rxerror) {
+		fprint(2, "%s: rx error %#ux\n",
+			argv0, hd);
+		n = 0;
+	} else {
+		if(n > plen)
+			n = plen;
+		if(n > 0)
+			memmove(p, bin, n);
+	}
+	if(n < nbin)
+		memmove(bin, bin+n, nbin-n);
+	nbin -= n;
+	return n;
+}
+
+static void
+auewrite(Dev *ep, uchar *p, int n)
+{
+	if(n > sizeof bout-2)
+		n = sizeof bout - 2;
+	PUT2(bout, n);
+	memmove(bout+2, p, n);
+	write(ep->dfd, bout, n+2);
+}
+
+int
+aueinit(Dev *d)
+{
+	int i, v;
+	uchar *p;
+
+	reset(d);
+	for(i = 0, p = macaddr; i < 3; i++, p += 2) {
+		v = eeprom16r(d, i);
+		PUT2(p, v);
+	}
+	for(i = 0; i < sizeof macaddr; i++)
+		csr8w(d, Par+i, macaddr[i]);
+	csr8w(d, Ctl2, csr8r(d, Ctl2)&~C2prom);
+	csr8w(d, Ctl0, C0rxstatappend|C0rxen);
+	csr8w(d, Ctl0, csr8r(d, Ctl0)|C0txen);
+	csr8w(d, Ctl2, csr8r(d, Ctl2)|C2ep3clr);
+	epread = aueread;
+	epwrite = auewrite;
+	return 0;
+}
diff --git a/sys/src/cmd/nusb/ether/ether.c b/sys/src/cmd/nusb/ether/ether.c
index 143c4a9de..076b5af6c 100644
--- a/sys/src/cmd/nusb/ether/ether.c
+++ b/sys/src/cmd/nusb/ether/ether.c
@@ -753,7 +753,7 @@ usage(void)
 	exits("usage");
 }
 
-
+extern int aueinit(Dev *);
 extern int a88178init(Dev *);
 extern int a88772init(Dev *);
 extern int smscinit(Dev *);
@@ -767,6 +767,7 @@ static struct {
 	"smsc",		smscinit,
 	"a88178",	a88178init,
 	"a88772",	a88772init,
+	"aue", aueinit,
 };
 
 void
diff --git a/sys/src/cmd/nusb/ether/mkfile b/sys/src/cmd/nusb/ether/mkfile
index 369c3aabf..22c297d7e 100644
--- a/sys/src/cmd/nusb/ether/mkfile
+++ b/sys/src/cmd/nusb/ether/mkfile
@@ -5,7 +5,7 @@ LIB=../lib/usb.a$O
 
 TARG=ether
 HFILES=
-OFILES=ether.$O cdc.$O smsc.$O asix.$O
+OFILES=ether.$O cdc.$O smsc.$O asix.$O aue.$O
 
 </sys/src/cmd/mkone