ref: 457ba087b13a881b013940f6e54c09566ec10ed1
dir: /sys/src/cmd/nusb/ether/asix.c/
/*
* Asix USB ether adapters
* I got no documentation for it, thus the bits
* come from other systems; it's likely this is
* doing more than needed in some places and
* less than required in others.
*/
#include <u.h>
#include <libc.h>
#include <thread.h>
#include "usb.h"
#include "dat.h"
enum
{
/* Asix commands */
Cswmii = 0x06, /* set sw mii */
Crmii = 0x07, /* read mii reg */
Cwmii = 0x08, /* write mii reg */
Chwmii = 0x0a, /* set hw mii */
Creeprom = 0x0b, /* read eeprom */
Cwdis = 0x0e, /* write disable */
Cwena = 0x0d, /* write enable */
Crrxctl = 0x0f, /* read rx ctl */
Cwrxctl = 0x10, /* write rx ctl */
Cwipg = 0x12, /* write ipg */
Crmac = 0x13, /* read mac addr */
Crphy = 0x19, /* read phy id */
Cwmedium = 0x1b, /* write medium mode */
Crgpio = 0x1e, /* read gpio */
Cwgpio = 0x1f, /* write gpios */
Creset = 0x20, /* reset */
Cwphy = 0x22, /* select phy */
/* reset codes */
Rclear = 0x00,
Rprte = 0x04,
Rprl = 0x08,
Riprl = 0x20,
Rippd = 0x40,
Gpiogpo1en = 0x04, /* gpio1 enable */,
Gpiogpo1 = 0x08, /* gpio1 value */
Gpiogpo2en = 0x10, /* gpio2 enable */
Gpiogpo2 = 0x20, /* gpio2 value */
Gpiorse = 0x80, /* gpio reload serial eeprom */
Pmask = 0x1F,
Pembed = 0x10, /* embedded phy */
Mfd = 0x002, /* media */
Mac = 0x004,
Mrfc = 0x010,
Mtfc = 0x020,
Mjfe = 0x040,
Mre = 0x100,
Mps = 0x200,
Mall772 = Mfd|Mrfc|Mtfc|Mps|Mac|Mre,
Mall178 = Mps|Mfd|Mac|Mrfc|Mtfc|Mjfe|Mre,
Ipgdflt = 0x15|0x0c|0x12, /* default ipg0, 1, 2 */
Rxctlso = 0x80,
Rxctlab = 0x08,
Rxctlsep = 0x04,
Rxctlamall = 0x02, /* all multicast */
Rxctlprom = 0x01, /* promiscuous */
/* MII */
Miibmcr = 0x00, /* basic mode ctrl reg. */
Bmcrreset = 0x8000, /* reset */
Bmcranena = 0x1000, /* auto neg. enable */
Bmcrar = 0x0200, /* announce restart */
Miiad = 0x04, /* advertise reg. */
Adcsma = 0x0001,
Ad1000f = 0x0200,
Ad1000h = 0x0100,
Ad10h = 0x0020,
Ad10f = 0x0040,
Ad100h = 0x0080,
Ad100f = 0x0100,
Adpause = 0x0400,
Adall = Ad10h|Ad10f|Ad100h|Ad100f,
Miimctl = 0x14, /* marvell ctl */
Mtxdly = 0x02,
Mrxdly = 0x80,
Mtxrxdly = 0x82,
Miic1000 = 0x09,
};
static uint asixphy;
static int
asixset(Dev *d, int c, int v)
{
int r;
int ec;
r = Rh2d|Rvendor|Rdev;
ec = usbcmd(d, r, c, v, 0, nil, 0);
if(ec < 0)
fprint(2, "%s: asixset %x %x: %r\n", argv0, c, v);
return ec;
}
static int
asixget(Dev *d, int c, uchar *buf, int l)
{
int r;
int ec;
r = Rd2h|Rvendor|Rdev;
ec = usbcmd(d, r, c, 0, 0, buf, l);
if(ec < 0)
fprint(2, "%s: asixget %x: %r\n", argv0, c);
return ec;
}
static int
getgpio(Dev *d)
{
uchar c;
if(asixget(d, Crgpio, &c, 1) < 0)
return -1;
return c;
}
static int
getphy(Dev *d)
{
uchar buf[2];
if(asixget(d, Crphy, buf, sizeof(buf)) < 0)
return -1;
return buf[1];
}
static int
getrxctl(Dev *d)
{
uchar buf[2];
memset(buf, 0, sizeof(buf));
if(asixget(d, Crrxctl, buf, sizeof(buf)) < 0)
return -1;
return GET2(buf);
}
static int
miiread(Dev *d, int phy, int reg)
{
int r;
uchar v[2];
r = Rd2h|Rvendor|Rdev;
if(usbcmd(d, r, Crmii, phy, reg, v, 2) < 0){
fprint(2, "%s: miiwrite: %r\n", argv0);
return -1;
}
r = GET2(v);
if(r == 0xFFFF)
return -1;
return r;
}
static int
miiwrite(Dev *d, int phy, int reg, int val)
{
int r;
uchar v[2];
if(asixset(d, Cswmii, 0) < 0)
return -1;
r = Rh2d|Rvendor|Rdev;
PUT2(v, val);
if(usbcmd(d, r, Cwmii, phy, reg, v, 2) < 0){
fprint(2, "%s: miiwrite: %#x %#x %r\n", argv0, reg, val);
return -1;
}
if(asixset(d, Chwmii, 0) < 0)
return -1;
return 0;
}
static int
eepromread(Dev *d, int i)
{
int r;
int ec;
uchar buf[2];
r = Rd2h|Rvendor|Rdev;
ec = usbcmd(d, r, Creeprom, i, 0, buf, sizeof(buf));
if(ec < 0)
fprint(2, "%s: eepromread %d: %r\n", argv0, i);
ec = GET2(buf);
if(ec == 0xFFFF)
ec = -1;
return ec;
}
static int
asixreceive(Dev *ep)
{
Block *b;
uint hd;
int n;
b = allocb(Maxpkt+4);
if((n = read(ep->dfd, b->wp, b->lim - b->base)) < 0){
freeb(b);
return -1;
}
b->wp += n;
while(BLEN(b) >= 4){
hd = GET4(b->rp);
b->rp += 4;
n = hd & 0xFFFF;
hd = (hd>>16) ^ 0xFFFF;
if((n != hd) || (n > BLEN(b)))
break;
if(n == BLEN(b)){
etheriq(b);
return 0;
}
etheriq(copyblock(b, n));
b->rp += n;
}
freeb(b);
return 0;
}
static void
asixtransmit(Dev *ep, Block *b)
{
uint hd;
int n;
n = BLEN(b);
hd = n | (n<<16)^0xFFFF0000;
b->rp -= 4;
PUT4(b->rp, hd);
n += 4;
if((n % ep->maxpkt) == 0){
PUT4(b->wp, 0xFFFF0000);
b->wp += 4;
}
write(ep->dfd, b->rp, BLEN(b));
freeb(b);
}
static int
asixpromiscuous(Dev *d, int on)
{
int rxctl;
rxctl = getrxctl(d);
if(on)
rxctl |= Rxctlprom;
else
rxctl &= ~Rxctlprom;
return asixset(d, Cwrxctl, rxctl);
}
static int
asixmulticast(Dev *d, uchar*, int)
{
int rxctl;
rxctl = getrxctl(d);
if(nmulti != 0)
rxctl |= Rxctlamall;
else
rxctl &= ~Rxctlamall;
return asixset(d, Cwrxctl, rxctl);
}
int
a88178init(Dev *d)
{
int bmcr;
int gpio;
int ee17;
gpio = getgpio(d);
if(gpio < 0)
return -1;
asixset(d, Cwena, 0);
ee17 = eepromread(d, 0x0017);
asixset(d, Cwdis, 0);
asixset(d, Cwgpio, Gpiorse|Gpiogpo1|Gpiogpo1en);
if((ee17 >> 8) != 1){
asixset(d, Cwgpio, 0x003c);
asixset(d, Cwgpio, 0x001c);
asixset(d, Cwgpio, 0x003c);
}else{
asixset(d, Cwgpio, Gpiogpo1en);
asixset(d, Cwgpio, Gpiogpo1|Gpiogpo1en);
}
asixset(d, Creset, Rclear);
sleep(150);
asixset(d, Creset, Rippd|Rprl);
sleep(150);
asixset(d, Cwrxctl, 0);
if(asixget(d, Crmac, macaddr, Eaddrlen) < 0)
return -1;
asixphy = getphy(d);
if(ee17 < 0 || (ee17 & 0x7) == 0){
miiwrite(d, asixphy, Miimctl, Mtxrxdly);
sleep(60);
}
miiwrite(d, asixphy, Miibmcr, Bmcrreset|Bmcranena);
miiwrite(d, asixphy, Miiad, Adall|Adcsma|Adpause);
miiwrite(d, asixphy, Miic1000, Ad1000f);
bmcr = miiread(d, asixphy, Miibmcr);
if((bmcr & Bmcranena) != 0){
bmcr |= Bmcrar;
miiwrite(d, asixphy, Miibmcr, bmcr);
}
asixset(d, Cwmedium, Mall178);
asixset(d, Cwrxctl, Rxctlso|Rxctlab);
epreceive = asixreceive;
eptransmit = asixtransmit;
eppromiscuous = asixpromiscuous;
epmulticast = asixmulticast;
return 0;
}
int
a88772init(Dev *d)
{
int bmcr;
int rc;
if(asixset(d, Cwgpio, Gpiorse|Gpiogpo2|Gpiogpo2en) < 0)
return -1;
asixphy = getphy(d);
if((asixphy & Pmask) == Pembed){
/* embedded 10/100 ethernet */
rc = asixset(d, Cwphy, 1);
}else
rc = asixset(d, Cwphy, 0);
if(rc < 0)
return -1;
if(asixset(d, Creset, Rippd|Rprl) < 0)
return -1;
sleep(150);
if((asixphy & Pmask) == Pembed)
rc = asixset(d, Creset, Riprl);
else
rc = asixset(d, Creset, Rprte);
if(rc < 0)
return -1;
sleep(150);
getrxctl(d);
if(asixset(d, Cwrxctl, 0) < 0)
return -1;
if(asixget(d, Crmac, macaddr, Eaddrlen) < 0)
return -1;
if(asixset(d, Creset, Rprl) < 0)
return -1;
sleep(150);
if(asixset(d, Creset, Riprl|Rprl) < 0)
return -1;
sleep(150);
miiwrite(d, asixphy, Miibmcr, Bmcrreset);
miiwrite(d, asixphy, Miiad, Adall|Adcsma);
bmcr = miiread(d, asixphy, Miibmcr);
if((bmcr & Bmcranena) != 0){
bmcr |= Bmcrar;
miiwrite(d, asixphy, Miibmcr, bmcr);
}
if(asixset(d, Cwmedium, Mall772) < 0)
return -1;
if(asixset(d, Cwipg, Ipgdflt) < 0)
return -1;
if(asixset(d, Cwrxctl, Rxctlso|Rxctlab) < 0)
return -1;
epreceive = asixreceive;
eptransmit = asixtransmit;
eppromiscuous = asixpromiscuous;
epmulticast = asixmulticast;
return 0;
}