ref: 3d0ebdc439039f1e01ee5fa0f75b1de1a12c12f1
dir: /sys/src/9/pc/ether8169.c/
/*
* Realtek RTL8110S/8169S Gigabit Ethernet Controllers.
* Mostly there. There are some magic register values used
* which are not described in any datasheet or driver but seem
* to be necessary.
* No tuning has been done. Only tested on an RTL8110S, there
* are slight differences between the chips in the series so some
* tweaks may be needed.
*/
#include "u.h"
#include "../port/lib.h"
#include "mem.h"
#include "dat.h"
#include "fns.h"
#include "io.h"
#include "../port/error.h"
#include "../port/netif.h"
#include "../port/etherif.h"
#include "ethermii.h"
enum { /* registers */
Idr0 = 0x00, /* MAC address */
Mar0 = 0x08, /* Multicast address */
Dtccr = 0x10, /* Dump Tally Counter Command */
Tnpds = 0x20, /* Transmit Normal Priority Descriptors */
Thpds = 0x28, /* Transmit High Priority Descriptors */
Flash = 0x30, /* Flash Memory Read/Write */
Erbcr = 0x34, /* Early Receive Byte Count */
Ersr = 0x36, /* Early Receive Status */
Cr = 0x37, /* Command Register */
Tppoll = 0x38, /* Transmit Priority Polling */
Imr = 0x3C, /* Interrupt Mask */
Isr = 0x3E, /* Interrupt Status */
Tcr = 0x40, /* Transmit Configuration */
Rcr = 0x44, /* Receive Configuration */
Tctr = 0x48, /* Timer Count */
Mpc = 0x4C, /* Missed Packet Counter */
Cr9346 = 0x50, /* 9346 Command Register */
Config0 = 0x51, /* Configuration Register 0 */
Config1 = 0x52, /* Configuration Register 1 */
Config2 = 0x53, /* Configuration Register 2 */
Config3 = 0x54, /* Configuration Register 3 */
Config4 = 0x55, /* Configuration Register 4 */
Config5 = 0x56, /* Configuration Register 5 */
Timerint = 0x58, /* Timer Interrupt */
Mulint = 0x5C, /* Multiple Interrupt Select */
Phyar = 0x60, /* PHY Access */
Tbicsr0 = 0x64, /* TBI Control and Status */
Tbianar = 0x68, /* TBI Auto-Negotiation Advertisment */
Tbilpar = 0x6A, /* TBI Auto-Negotiation Link Partner */
Phystatus = 0x6C, /* PHY Status */
Pmch = 0x6F, /* power management */
Ldps = 0x82, /* link down power saving */
Rms = 0xDA, /* Receive Packet Maximum Size */
Cplusc = 0xE0, /* C+ Command */
Coal = 0xE2, /* Interrupt Mitigation (Coalesce) */
Rdsar = 0xE4, /* Receive Descriptor Start Address */
Etx = 0xEC, /* Early Transmit Threshold */
};
enum { /* Dtccr */
Cmd = 0x00000008, /* Command */
};
enum { /* Cr */
Te = 0x04, /* Transmitter Enable */
Re = 0x08, /* Receiver Enable */
Rst = 0x10, /* Software Reset */
};
enum { /* Tppoll */
Fswint = 0x01, /* Forced Software Interrupt */
Npq = 0x40, /* Normal Priority Queue polling */
Hpq = 0x80, /* High Priority Queue polling */
};
enum { /* Imr/Isr */
Rok = 0x0001, /* Receive OK */
Rer = 0x0002, /* Receive Error */
Tok = 0x0004, /* Transmit OK */
Ter = 0x0008, /* Transmit Error */
Rdu = 0x0010, /* Receive Descriptor Unavailable */
Punlc = 0x0020, /* Packet Underrun or Link Change */
Fovw = 0x0040, /* Receive FIFO Overflow */
Tdu = 0x0080, /* Transmit Descriptor Unavailable */
Swint = 0x0100, /* Software Interrupt */
Timeout = 0x4000, /* Timer */
Serr = 0x8000, /* System Error */
};
enum { /* Tcr */
MtxdmaSHIFT = 8, /* Max. DMA Burst Size */
MtxdmaMASK = 0x00000700,
Mtxdmaunlimited = 0x00000700,
Acrc = 0x00010000, /* Append CRC (not) */
Lbk0 = 0x00020000, /* Loopback Test 0 */
Lbk1 = 0x00040000, /* Loopback Test 1 */
Ifg2 = 0x00080000, /* Interframe Gap 2 */
HwveridSHIFT = 23, /* Hardware Version ID */
HwveridMASK = 0x7C800000,
Macv01 = 0x00000000, /* RTL8169 */
Macv02 = 0x00800000, /* RTL8169S/8110S */
Macv03 = 0x04000000, /* RTL8169S/8110S */
Macv04 = 0x10000000, /* RTL8169SB/8110SB */
Macv05 = 0x18000000, /* RTL8169SC/8110SC */
Macv07 = 0x24800000, /* RTL8102e */
Macv07a = 0x34800000, /* RTL8102e */
Macv11 = 0x30000000, /* RTL8168B/8111B */
Macv12 = 0x38000000, /* RTL8169B/8111B */
Macv12a = 0x3c000000, /* RTL8169C/8111C */
Macv13 = 0x34000000, /* RTL8101E */
Macv14 = 0x30800000, /* RTL8100E */
Macv15 = 0x38800000, /* RTL8100E */
// Macv19 = 0x3c000000, /* dup Macv12a: RTL8111c-gr */
Macv25 = 0x28000000, /* RTL8168D */
Macv26 = 0x48000000, /* RTL8111/8168B */
Macv27 = 0x2c800000, /* RTL8111e */
Macv28 = 0x2c000000, /* RTL8111/8168B */
Macv29 = 0x40800000, /* RTL8101/8102E */
Macv30 = 0x24000000, /* RTL8101E? (untested) */
Macv39 = 0x44800000, /* RTL8106E */
Macv40 = 0x4c000000, /* RTL8168G */
Macv42 = 0x50800000, /* RTL8168GU */
Macv44 = 0x5c800000, /* RTL8411B */
Macv45 = 0x54000000, /* RTL8111HN */
Ifg0 = 0x01000000, /* Interframe Gap 0 */
Ifg1 = 0x02000000, /* Interframe Gap 1 */
};
enum { /* Rcr */
Aap = 0x00000001, /* Accept All Packets */
Apm = 0x00000002, /* Accept Physical Match */
Am = 0x00000004, /* Accept Multicast */
Ab = 0x00000008, /* Accept Broadcast */
Ar = 0x00000010, /* Accept Runt */
Aer = 0x00000020, /* Accept Error */
Sel9356 = 0x00000040, /* 9356 EEPROM used */
MrxdmaSHIFT = 8, /* Max. DMA Burst Size */
MrxdmaMASK = 0x00000700,
Mrxdmaunlimited = 0x00000700,
RxfthSHIFT = 13, /* Receive Buffer Length */
RxfthMASK = 0x0000E000,
Rxfth256 = 0x00008000,
Rxfthnone = 0x0000E000,
Rer8 = 0x00010000, /* Accept Error Packets > 8 bytes */
MulERINT = 0x01000000, /* Multiple Early Interrupt Select */
};
enum { /* Cr9346 */
Eedo = 0x01, /* */
Eedi = 0x02, /* */
Eesk = 0x04, /* */
Eecs = 0x08, /* */
Eem0 = 0x40, /* Operating Mode */
Eem1 = 0x80,
};
enum { /* Phyar */
DataMASK = 0x0000FFFF, /* 16-bit GMII/MII Register Data */
DataSHIFT = 0,
RegaddrMASK = 0x001F0000, /* 5-bit GMII/MII Register Address */
RegaddrSHIFT = 16,
Flag = 0x80000000, /* */
};
enum { /* Phystatus */
Fd = 0x01, /* Full Duplex */
Linksts = 0x02, /* Link Status */
Speed10 = 0x04, /* */
Speed100 = 0x08, /* */
Speed1000 = 0x10, /* */
Rxflow = 0x20, /* */
Txflow = 0x40, /* */
Entbi = 0x80, /* */
};
enum { /* Cplusc */
Txenb = 0x0001, /* enable C+ transmit mode */
Rxenb = 0x0002, /* enable C+ receive mode */
Mulrw = 0x0008, /* PCI Multiple R/W Enable */
Dac = 0x0010, /* PCI Dual Address Cycle Enable */
Rxchksum = 0x0020, /* Receive Checksum Offload Enable */
Rxvlan = 0x0040, /* Receive VLAN De-tagging Enable */
Macstatdis = 0x0080, /* Disable Mac Statistics */
Endian = 0x0200, /* Endian Mode */
};
typedef struct D D; /* Transmit/Receive Descriptor */
struct D {
u32int control;
u32int vlan;
u32int addrlo;
u32int addrhi;
};
enum { /* Transmit Descriptor control */
TxflMASK = 0x0000FFFF, /* Transmit Frame Length */
TxflSHIFT = 0,
Tcps = 0x00010000, /* TCP Checksum Offload */
Udpcs = 0x00020000, /* UDP Checksum Offload */
Ipcs = 0x00040000, /* IP Checksum Offload */
Lgsen = 0x08000000, /* TSO; WARNING: contains lark's vomit */
};
enum { /* Receive Descriptor control */
RxflMASK = 0x00001FFF, /* Receive Frame Length */
Tcpf = 0x00004000, /* TCP Checksum Failure */
Udpf = 0x00008000, /* UDP Checksum Failure */
Ipf = 0x00010000, /* IP Checksum Failure */
Pid0 = 0x00020000, /* Protocol ID0 */
Pid1 = 0x00040000, /* Protocol ID1 */
Crce = 0x00080000, /* CRC Error */
Runt = 0x00100000, /* Runt Packet */
Res = 0x00200000, /* Receive Error Summary */
Rwt = 0x00400000, /* Receive Watchdog Timer Expired */
Fovf = 0x00800000, /* FIFO Overflow */
Bovf = 0x01000000, /* Buffer Overflow */
Bar = 0x02000000, /* Broadcast Address Received */
Pam = 0x04000000, /* Physical Address Matched */
Mar = 0x08000000, /* Multicast Address Received */
};
enum { /* General Descriptor control */
Ls = 0x10000000, /* Last Segment Descriptor */
Fs = 0x20000000, /* First Segment Descriptor */
Eor = 0x40000000, /* End of Descriptor Ring */
Own = 0x80000000, /* Ownership */
};
/*
*/
enum { /* Ring sizes (<= 1024) */
Ntd = 64, /* Transmit Ring */
Nrd = 256, /* Receive Ring */
Mtu = ETHERMAXTU,
Mps = ROUNDUP(ETHERMAXTU+4, 128),
};
typedef struct Dtcc Dtcc;
struct Dtcc {
u64int txok;
u64int rxok;
u64int txer;
u32int rxer;
u16int misspkt;
u16int fae;
u32int tx1col;
u32int txmcol;
u64int rxokph;
u64int rxokbrd;
u32int rxokmu;
u16int txabt;
u16int txundrn;
};
enum { /* Variants */
Rtl8100e = (0x8136<<16)|0x10EC, /* RTL810[01]E: pci -e */
Rtl8169c = (0x0116<<16)|0x16EC, /* RTL8169C+ (USR997902) */
Rtl8169sc = (0x8167<<16)|0x10EC, /* RTL8169SC */
Rtl8168b = (0x8168<<16)|0x10EC, /* RTL8168B: pci-e */
Rtl8169 = (0x8169<<16)|0x10EC, /* RTL8169 */
};
typedef struct Ctlr Ctlr;
typedef struct Ctlr {
Lock;
int port;
Pcidev* pcidev;
Ctlr* next;
int active;
QLock alock; /* attach */
int init; /* */
Rendez reset;
int pciv; /* */
int macv; /* MAC version */
int phyv; /* PHY version */
int pcie; /* flag: pci-express device? */
uvlong mchash; /* multicast hash */
Mii* mii;
D* td; /* descriptor ring */
Block** tb; /* transmit buffers */
int ntd;
int tdh; /* head - producer index (host) */
int tdt; /* tail - consumer index (NIC) */
int ntq;
D* rd; /* descriptor ring */
Block** rb; /* receive buffers */
int nrd;
int rdh; /* head - producer index (NIC) */
int rdt; /* tail - consumer index (host) */
int nrq;
int tcr; /* transmit configuration register */
int rcr; /* receive configuration register */
int imr;
QLock slock; /* statistics */
Dtcc* dtcc;
uint txdu;
uint tcpf;
uint udpf;
uint ipf;
uint fovf;
uint rer;
uint rdu;
uint punlc;
uint serr;
uint fovw;
uint mcast;
uint frag; /* partial packets; rb was too small */
} Ctlr;
static Ctlr* rtl8169ctlrhead;
static Ctlr* rtl8169ctlrtail;
#define csr8r(c, r) (inb((c)->port+(r)))
#define csr16r(c, r) (ins((c)->port+(r)))
#define csr32r(c, r) (inl((c)->port+(r)))
#define csr8w(c, r, b) (outb((c)->port+(r), (u8int)(b)))
#define csr16w(c, r, w) (outs((c)->port+(r), (u16int)(w)))
#define csr32w(c, r, l) (outl((c)->port+(r), (u32int)(l)))
static int
rtl8169miimir(Mii* mii, int pa, int ra)
{
uint r;
int timeo;
Ctlr *ctlr;
if(pa != 1)
return -1;
ctlr = mii->ctlr;
r = (ra<<16) & RegaddrMASK;
csr32w(ctlr, Phyar, r);
delay(1);
for(timeo = 0; timeo < 2000; timeo++){
if((r = csr32r(ctlr, Phyar)) & Flag)
break;
microdelay(100);
}
if(!(r & Flag))
return -1;
return (r & DataMASK)>>DataSHIFT;
}
static int
rtl8169miimiw(Mii* mii, int pa, int ra, int data)
{
uint r;
int timeo;
Ctlr *ctlr;
if(pa != 1)
return -1;
ctlr = mii->ctlr;
r = Flag|((ra<<16) & RegaddrMASK)|((data<<DataSHIFT) & DataMASK);
csr32w(ctlr, Phyar, r);
delay(1);
for(timeo = 0; timeo < 2000; timeo++){
if(!((r = csr32r(ctlr, Phyar)) & Flag))
break;
microdelay(100);
}
if(r & Flag)
return -1;
return 0;
}
static int
rtl8169mii(Ctlr* ctlr)
{
MiiPhy *phy;
/*
* Link management.
*/
if((ctlr->mii = malloc(sizeof(Mii))) == nil)
return -1;
ctlr->mii->mir = rtl8169miimir;
ctlr->mii->miw = rtl8169miimiw;
ctlr->mii->ctlr = ctlr;
/*
* PHY wakeup
*/
switch(ctlr->macv){
case Macv25:
case Macv28:
case Macv29:
case Macv30:
csr8w(ctlr, Pmch, csr8r(ctlr, Pmch) | 0x80);
break;
}
rtl8169miimiw(ctlr->mii, 1, 0x1f, 0);
rtl8169miimiw(ctlr->mii, 1, 0x0e, 0);
/*
* Get rev number out of Phyidr2 so can config properly.
* There's probably more special stuff for Macv0[234] needed here.
*/
ctlr->phyv = rtl8169miimir(ctlr->mii, 1, Phyidr2) & 0x0F;
if(ctlr->macv == Macv02){
csr8w(ctlr, Ldps, 1); /* magic */
rtl8169miimiw(ctlr->mii, 1, 0x0B, 0x0000); /* magic */
}
if(mii(ctlr->mii, (1<<1)) == 0 || (phy = ctlr->mii->curphy) == nil){
free(ctlr->mii);
ctlr->mii = nil;
return -1;
}
print("rtl8169: oui %#ux phyno %d, macv = %#8.8ux phyv = %#4.4ux\n",
phy->oui, phy->phyno, ctlr->macv, ctlr->phyv);
miireset(ctlr->mii);
microdelay(100);
miiane(ctlr->mii, ~0, ~0, ~0);
return 0;
}
static void
rtl8169promiscuous(void* arg, int on)
{
Ether *edev;
Ctlr * ctlr;
edev = arg;
ctlr = edev->ctlr;
ilock(ctlr);
if(on)
ctlr->rcr |= Aap;
else
ctlr->rcr &= ~Aap;
csr32w(ctlr, Rcr, ctlr->rcr);
iunlock(ctlr);
}
enum {
/* everyone else uses 0x04c11db7, but they both produce the same crc */
Etherpolybe = 0x04c11db6,
Bytemask = (1<<8) - 1,
};
static ulong
ethercrcbe(uchar *addr, long len)
{
int i, j;
ulong c, crc, carry;
crc = ~0UL;
for (i = 0; i < len; i++) {
c = addr[i];
for (j = 0; j < 8; j++) {
carry = ((crc & (1UL << 31))? 1: 0) ^ (c & 1);
crc <<= 1;
c >>= 1;
if (carry)
crc = (crc ^ Etherpolybe) | carry;
}
}
return crc;
}
static ulong
swabl(ulong l)
{
return l>>24 | (l>>8) & (Bytemask<<8) |
(l<<8) & (Bytemask<<16) | l<<24;
}
static void
rtl8169multicast(void* ether, uchar *eaddr, int add)
{
Ether *edev;
Ctlr *ctlr;
if (!add)
return; /* ok to keep receiving on old mcast addrs */
edev = ether;
ctlr = edev->ctlr;
ilock(ctlr);
ctlr->mchash |= 1ULL << (ethercrcbe(eaddr, Eaddrlen) >> 26);
ctlr->rcr |= Am;
csr32w(ctlr, Rcr, ctlr->rcr);
/* pci-e variants reverse the order of the hash byte registers */
if (ctlr->pcie) {
csr32w(ctlr, Mar0, swabl(ctlr->mchash>>32));
csr32w(ctlr, Mar0+4, swabl(ctlr->mchash));
} else {
csr32w(ctlr, Mar0, ctlr->mchash);
csr32w(ctlr, Mar0+4, ctlr->mchash>>32);
}
iunlock(ctlr);
}
static long
rtl8169ifstat(Ether* edev, void* a, long n, ulong offset)
{
char *p;
Ctlr *ctlr;
Dtcc *dtcc;
int i, l, r, timeo;
p = smalloc(READSTR);
ctlr = edev->ctlr;
qlock(&ctlr->slock);
if(waserror()){
qunlock(&ctlr->slock);
free(p);
nexterror();
}
csr32w(ctlr, Dtccr+4, 0);
csr32w(ctlr, Dtccr, PCIWADDR(ctlr->dtcc)|Cmd);
for(timeo = 0; timeo < 1000; timeo++){
if(!(csr32r(ctlr, Dtccr) & Cmd))
break;
delay(1);
}
if(csr32r(ctlr, Dtccr) & Cmd)
error(Eio);
dtcc = ctlr->dtcc;
edev->oerrs = dtcc->txer;
edev->crcs = dtcc->rxer;
edev->frames = dtcc->fae;
edev->buffs = dtcc->misspkt;
edev->overflows = ctlr->txdu+ctlr->rdu;
if(n == 0){
qunlock(&ctlr->slock);
poperror();
free(p);
return 0;
}
l = snprint(p, READSTR, "TxOk: %llud\n", dtcc->txok);
l += snprint(p+l, READSTR-l, "RxOk: %llud\n", dtcc->rxok);
l += snprint(p+l, READSTR-l, "TxEr: %llud\n", dtcc->txer);
l += snprint(p+l, READSTR-l, "RxEr: %ud\n", dtcc->rxer);
l += snprint(p+l, READSTR-l, "MissPkt: %ud\n", dtcc->misspkt);
l += snprint(p+l, READSTR-l, "FAE: %ud\n", dtcc->fae);
l += snprint(p+l, READSTR-l, "Tx1Col: %ud\n", dtcc->tx1col);
l += snprint(p+l, READSTR-l, "TxMCol: %ud\n", dtcc->txmcol);
l += snprint(p+l, READSTR-l, "RxOkPh: %llud\n", dtcc->rxokph);
l += snprint(p+l, READSTR-l, "RxOkBrd: %llud\n", dtcc->rxokbrd);
l += snprint(p+l, READSTR-l, "RxOkMu: %ud\n", dtcc->rxokmu);
l += snprint(p+l, READSTR-l, "TxAbt: %ud\n", dtcc->txabt);
l += snprint(p+l, READSTR-l, "TxUndrn: %ud\n", dtcc->txundrn);
l += snprint(p+l, READSTR-l, "serr: %ud\n", ctlr->serr);
l += snprint(p+l, READSTR-l, "fovw: %ud\n", ctlr->fovw);
l += snprint(p+l, READSTR-l, "txdu: %ud\n", ctlr->txdu);
l += snprint(p+l, READSTR-l, "tcpf: %ud\n", ctlr->tcpf);
l += snprint(p+l, READSTR-l, "udpf: %ud\n", ctlr->udpf);
l += snprint(p+l, READSTR-l, "ipf: %ud\n", ctlr->ipf);
l += snprint(p+l, READSTR-l, "fovf: %ud\n", ctlr->fovf);
l += snprint(p+l, READSTR-l, "rer: %ud\n", ctlr->rer);
l += snprint(p+l, READSTR-l, "rdu: %ud\n", ctlr->rdu);
l += snprint(p+l, READSTR-l, "punlc: %ud\n", ctlr->punlc);
l += snprint(p+l, READSTR-l, "tcr: %#8.8ux\n", ctlr->tcr);
l += snprint(p+l, READSTR-l, "rcr: %#8.8ux\n", ctlr->rcr);
l += snprint(p+l, READSTR-l, "multicast: %ud\n", ctlr->mcast);
if(ctlr->mii != nil && ctlr->mii->curphy != nil){
l += snprint(p+l, READSTR-l, "phy: ");
for(i = 0; i < NMiiPhyr; i++){
if(i && ((i & 0x07) == 0))
l += snprint(p+l, READSTR-l, "\n ");
r = miimir(ctlr->mii, i);
l += snprint(p+l, READSTR-l, " %4.4ux", r);
}
snprint(p+l, READSTR-l, "\n");
}
n = readstr(offset, a, n, p);
qunlock(&ctlr->slock);
poperror();
free(p);
return n;
}
static void
rtl8169halt(Ctlr* ctlr)
{
csr8w(ctlr, Cr, 0);
csr16w(ctlr, Imr, 0);
csr16w(ctlr, Isr, ~0);
}
static int
rtl8169reset(Ctlr* ctlr)
{
u32int r;
int timeo;
/*
* Soft reset the controller.
*/
csr8w(ctlr, Cr, Rst);
for(r = timeo = 0; timeo < 1000; timeo++){
r = csr8r(ctlr, Cr);
if(!(r & Rst))
break;
delay(1);
}
rtl8169halt(ctlr);
if(r & Rst)
return -1;
return 0;
}
static void
rtl8169replenish(Ctlr* ctlr)
{
D *d;
int x;
Block *bp;
x = ctlr->rdt;
while(NEXT(x, ctlr->nrd) != ctlr->rdh){
bp = iallocb(Mps);
if(bp == nil){
iprint("rtl8169: no available buffers\n");
break;
}
ctlr->rb[x] = bp;
ctlr->nrq++;
d = &ctlr->rd[x];
d->addrlo = PCIWADDR(bp->rp);
d->addrhi = 0;
coherence();
d->control = (d->control & Eor) | Own | BALLOC(bp);
x = NEXT(x, ctlr->nrd);
ctlr->rdt = x;
}
}
static int
rtl8169init(Ether* edev)
{
int i;
u32int r;
Block *bp;
Ctlr *ctlr;
u16int cplusc;
ctlr = edev->ctlr;
ilock(ctlr);
rtl8169reset(ctlr);
memset(ctlr->td, 0, sizeof(D)*ctlr->ntd);
ctlr->tdh = ctlr->tdt = ctlr->ntq = 0;
ctlr->td[ctlr->ntd-1].control = Eor;
for(i = 0; i < ctlr->ntd; i++)
if(bp = ctlr->tb[i]){
ctlr->tb[i] = nil;
freeb(bp);
}
memset(ctlr->rd, 0, sizeof(D)*ctlr->nrd);
ctlr->rdh = ctlr->rdt = ctlr->nrq = 0;
ctlr->rd[ctlr->nrd-1].control = Eor;
for(i = 0; i < ctlr->nrd; i++)
if(bp = ctlr->rb[i]){
ctlr->rb[i] = nil;
freeb(bp);
}
rtl8169replenish(ctlr);
cplusc = csr16r(ctlr, Cplusc);
cplusc &= ~(Endian|Rxchksum);
cplusc |= Txenb|Mulrw;
switch(ctlr->macv){
case Macv40:
case Macv44:
cplusc |= Macstatdis;
break;
default:
cplusc |= Rxenb;
break;
}
csr16w(ctlr, Cplusc, cplusc);
csr32w(ctlr, Tnpds+4, 0);
csr32w(ctlr, Tnpds, PCIWADDR(ctlr->td));
csr32w(ctlr, Rdsar+4, 0);
csr32w(ctlr, Rdsar, PCIWADDR(ctlr->rd));
csr8w(ctlr, Cr, Te|Re);
csr32w(ctlr, Tcr, Ifg1|Ifg0|Mtxdmaunlimited);
ctlr->tcr = csr32r(ctlr, Tcr);
ctlr->rcr = Rxfthnone|Mrxdmaunlimited|Ab|Am|Apm;
ctlr->mchash = 0;
csr32w(ctlr, Mar0, 0);
csr32w(ctlr, Mar0+4, 0);
csr32w(ctlr, Rcr, ctlr->rcr);
/* maximum packet sizes, unlimited */
csr8w(ctlr, Etx, 0x3f);
csr16w(ctlr, Rms, 0x3fff);
csr16w(ctlr, Coal, 0);
/* no early rx interrupts */
r = csr16r(ctlr, Mulint) & 0xF000;
csr16w(ctlr, Mulint, r);
ctlr->imr = Serr|Fovw|Punlc|Rdu|Ter|Rer|Rok|Tdu;
csr16w(ctlr, Imr, ctlr->imr);
csr32w(ctlr, Mpc, 0);
iunlock(ctlr);
return 0;
}
static void
rtl8169reseter(void *arg)
{
Ether *edev;
Ctlr *ctlr;
edev = arg;
for(;;){
rtl8169init(edev);
ctlr = edev->ctlr;
qunlock(&ctlr->alock);
while(waserror())
;
sleep(&ctlr->reset, return0, nil);
poperror();
qlock(&ctlr->alock);
}
}
static void
rtl8169attach(Ether* edev)
{
int timeo;
Ctlr *ctlr;
ctlr = edev->ctlr;
qlock(&ctlr->alock);
if(!ctlr->init){
ctlr->ntd = Ntd;
ctlr->nrd = Nrd;
ctlr->tb = malloc(ctlr->ntd*sizeof(Block*));
ctlr->rb = malloc(ctlr->nrd*sizeof(Block*));
ctlr->td = mallocalign(sizeof(D)*ctlr->ntd, 256, 0, 0);
ctlr->rd = mallocalign(sizeof(D)*ctlr->nrd, 256, 0, 0);
ctlr->dtcc = mallocalign(sizeof(Dtcc), 64, 0, 0);
if(ctlr->rb == nil || ctlr->rb == nil ||
ctlr->rd == nil || ctlr->rd == nil || ctlr->dtcc == nil){
free(ctlr->tb);
ctlr->tb = nil;
free(ctlr->rb);
ctlr->rb = nil;
free(ctlr->td);
ctlr->td = nil;
free(ctlr->rd);
ctlr->rd = nil;
free(ctlr->dtcc);
ctlr->dtcc = nil;
qunlock(&ctlr->alock);
error(Enomem);
}
ctlr->init = 1;
kproc("rtl8169", rtl8169reseter, edev);
/* rtl8169reseter() does qunlock(&ctlr->alock) when complete */
qlock(&ctlr->alock);
}
qunlock(&ctlr->alock);
/*
* Wait for link to be ready.
*/
for(timeo = 0; timeo < 35; timeo++){
if(miistatus(ctlr->mii) == 0)
break;
delay(100); /* print fewer miistatus messages */
}
}
static void
rtl8169link(Ether* edev)
{
uint r;
int limit;
Ctlr *ctlr;
ctlr = edev->ctlr;
r = csr8r(ctlr, Phystatus);
/*
* Maybe the link changed - do we care very much?
* Could stall transmits if no link, maybe?
*/
edev->link = (r & Linksts) != 0;
limit = 256*1024;
if(r & Speed10){
edev->mbps = 10;
limit = 65*1024;
} else if(r & Speed100)
edev->mbps = 100;
else if(r & Speed1000)
edev->mbps = 1000;
if(edev->oq != nil)
qsetlimit(edev->oq, limit);
}
static void
rtl8169transmit(Ether* edev)
{
D *d;
Block *bp;
Ctlr *ctlr;
int x;
ctlr = edev->ctlr;
if(!canlock(ctlr))
return;
for(x = ctlr->tdh; ctlr->ntq > 0; x = NEXT(x, ctlr->ntd)){
d = &ctlr->td[x];
if(d->control & Own)
break;
/*
* Free it up.
* Need to clean the descriptor here? Not really.
* Simple freeb for now (no chain and freeblist).
* Use ntq count for now.
*/
freeb(ctlr->tb[x]);
ctlr->tb[x] = nil;
ctlr->ntq--;
}
ctlr->tdh = x;
x = ctlr->tdt;
while(ctlr->ntq < (ctlr->ntd-1)){
if((bp = qget(edev->oq)) == nil)
break;
d = &ctlr->td[x];
d->addrlo = PCIWADDR(bp->rp);
d->addrhi = 0;
coherence();
d->control = (d->control & Eor) | Own | Fs | Ls | BLEN(bp);
ctlr->tb[x] = bp;
ctlr->ntq++;
x = NEXT(x, ctlr->ntd);
}
if(x != ctlr->tdt)
ctlr->tdt = x;
else if(ctlr->ntq >= (ctlr->ntd-1))
ctlr->txdu++;
if(ctlr->ntq > 0){
coherence();
csr8w(ctlr, Tppoll, Npq);
}
unlock(ctlr);
}
static void
rtl8169receive(Ether* edev)
{
D *d;
Block *bp;
Ctlr *ctlr;
u32int control;
int x;
ctlr = edev->ctlr;
if(ctlr->nrq < ctlr->nrd/2)
rtl8169replenish(ctlr);
for(x = ctlr->rdh; x != ctlr->rdt;){
d = &ctlr->rd[x];
if((control = d->control) & Own)
break;
bp = ctlr->rb[x];
ctlr->rb[x] = nil;
ctlr->nrq--;
x = NEXT(x, ctlr->nrd);
ctlr->rdh = x;
if(ctlr->nrq < ctlr->nrd/2)
rtl8169replenish(ctlr);
if((control & (Fs|Ls|Res)) == (Fs|Ls)){
bp->wp = bp->rp + (control & RxflMASK) - 4;
if(control & Fovf)
ctlr->fovf++;
if(control & Mar)
ctlr->mcast++;
switch(control & (Pid1|Pid0)){
default:
break;
case Pid0:
if(control & Tcpf){
ctlr->tcpf++;
break;
}
bp->flag |= Btcpck;
break;
case Pid1:
if(control & Udpf){
ctlr->udpf++;
break;
}
bp->flag |= Budpck;
break;
case Pid1|Pid0:
if(control & Ipf){
ctlr->ipf++;
break;
}
bp->flag |= Bipck;
break;
}
etheriq(edev, bp);
}else{
if(!(control & Res))
ctlr->frag++;
freeb(bp);
}
}
}
static void
rtl8169restart(Ctlr *ctlr)
{
ctlr->imr = 0;
rtl8169halt(ctlr);
wakeup(&ctlr->reset);
}
static void
rtl8169interrupt(Ureg*, void* arg)
{
Ctlr *ctlr;
Ether *edev;
u32int isr;
edev = arg;
ctlr = edev->ctlr;
while((isr = csr16r(ctlr, Isr)) != 0 && isr != 0xFFFF){
csr16w(ctlr, Isr, isr);
if((isr & ctlr->imr) == 0)
break;
if(isr & Serr)
ctlr->serr++;
if(isr & Fovw)
ctlr->fovw++;
if(isr & Rer)
ctlr->rer++;
if(isr & Rdu)
ctlr->rdu++;
if(isr & Punlc)
ctlr->punlc++;
if(isr & (Serr|Fovw)){
rtl8169restart(ctlr);
break;
}
if(isr & (Punlc|Rdu|Rer|Rok))
rtl8169receive(edev);
if(isr & (Tdu|Ter|Tok))
rtl8169transmit(edev);
if(isr & Punlc)
rtl8169link(edev);
}
}
int
vetmacv(Ctlr *ctlr, uint *macv)
{
*macv = csr32r(ctlr, Tcr) & HwveridMASK;
switch(*macv){
default:
return -1;
case Macv01:
case Macv02:
case Macv03:
case Macv04:
case Macv05:
case Macv07:
case Macv07a:
case Macv11:
case Macv12:
case Macv12a:
case Macv13:
case Macv14:
case Macv15:
case Macv25:
case Macv26:
case Macv27:
case Macv28:
case Macv29:
case Macv30:
case Macv39:
case Macv40:
case Macv42:
case Macv44:
case Macv45:
break;
}
return 0;
}
static void
rtl8169pci(void)
{
Pcidev *p;
Ctlr *ctlr;
int i, port, pcie;
uint macv;
p = nil;
while(p = pcimatch(p, 0, 0)){
if(p->ccrb != 0x02 || p->ccru != 0)
continue;
pcie = 0;
switch(i = ((p->did<<16)|p->vid)){
default:
continue;
case Rtl8100e: /* RTL810[01]E ? */
case Rtl8168b: /* RTL8168B */
pcie = 1;
break;
case Rtl8169c: /* RTL8169C */
case Rtl8169sc: /* RTL8169SC */
case Rtl8169: /* RTL8169 */
break;
case (0xC107<<16)|0x1259: /* Corega CG-LAPCIGT */
i = Rtl8169;
break;
}
port = p->mem[0].bar & ~0x01;
if(ioalloc(port, p->mem[0].size, 0, "rtl8169") < 0){
print("rtl8169: port %#ux in use\n", port);
continue;
}
ctlr = malloc(sizeof(Ctlr));
if(ctlr == nil){
print("rtl8169: can't allocate memory\n");
iofree(port);
continue;
}
ctlr->port = port;
ctlr->pcidev = p;
ctlr->pciv = i;
ctlr->pcie = pcie;
if(vetmacv(ctlr, &macv) == -1){
iofree(port);
free(ctlr);
print("rtl8169: unknown mac %.4ux %.8ux\n", p->did, macv);
continue;
}
if(pcigetpms(p) > 0){
pcisetpms(p, 0);
for(i = 0; i < 6; i++)
pcicfgw32(p, PciBAR0+i*4, p->mem[i].bar);
pcicfgw8(p, PciINTL, p->intl);
pcicfgw8(p, PciLTR, p->ltr);
pcicfgw8(p, PciCLS, p->cls);
pcicfgw16(p, PciPCR, p->pcr);
}
if(rtl8169reset(ctlr)){
iofree(port);
free(ctlr);
print("rtl8169: reset failed\n");
continue;
}
/*
* Extract the chip hardware version,
* needed to configure each properly.
*/
ctlr->macv = macv;
rtl8169mii(ctlr);
pcisetbme(p);
if(rtl8169ctlrhead != nil)
rtl8169ctlrtail->next = ctlr;
else
rtl8169ctlrhead = ctlr;
rtl8169ctlrtail = ctlr;
}
}
static int
rtl8169pnp(Ether* edev)
{
u32int r;
Ctlr *ctlr;
uchar ea[Eaddrlen];
static int once;
if(once == 0){
once = 1;
rtl8169pci();
}
/*
* Any adapter matches if no edev->port is supplied,
* otherwise the ports must match.
*/
for(ctlr = rtl8169ctlrhead; ctlr != nil; ctlr = ctlr->next){
if(ctlr->active)
continue;
if(edev->port == 0 || edev->port == ctlr->port){
ctlr->active = 1;
break;
}
}
if(ctlr == nil)
return -1;
edev->ctlr = ctlr;
edev->port = ctlr->port;
edev->irq = ctlr->pcidev->intl;
edev->tbdf = ctlr->pcidev->tbdf;
edev->mbps = 100;
edev->maxmtu = Mtu;
/*
* Check if the adapter's station address is to be overridden.
* If not, read it from the device and set in edev->ea.
*/
memset(ea, 0, Eaddrlen);
if(memcmp(ea, edev->ea, Eaddrlen) == 0){
r = csr32r(ctlr, Idr0);
edev->ea[0] = r;
edev->ea[1] = r>>8;
edev->ea[2] = r>>16;
edev->ea[3] = r>>24;
r = csr32r(ctlr, Idr0+4);
edev->ea[4] = r;
edev->ea[5] = r>>8;
}
edev->attach = rtl8169attach;
edev->transmit = rtl8169transmit;
edev->ifstat = rtl8169ifstat;
edev->arg = edev;
edev->promiscuous = rtl8169promiscuous;
edev->multicast = rtl8169multicast;
rtl8169link(edev);
intrenable(edev->irq, rtl8169interrupt, edev, edev->tbdf, edev->name);
return 0;
}
void
ether8169link(void)
{
addethercard("rtl8169", rtl8169pnp);
}