ref: ee695eff4329234e20abb68ff3100d3b15929418
dir: /os/boot/pc/ether8169.c/
/*
* Realtek RTL8110S/8169S.
* Mostly there. There are some magic register values used
* which are not described in any datasheet or driver but seem
* to be necessary.
* Why is the Fovf descriptor bit set for every received packet?
* Occasionally the hardware indicates an input TCP checksum error
* although the higher-level software seems to check the packet OK?
* 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 "lib.h"
#include "mem.h"
#include "dat.h"
#include "fns.h"
#include "io.h"
typedef struct QLock { int r; } QLock;
#define qlock(i) while(0)
#define qunlock(i) while(0)
#define iallocb allocb
#define iprint print
#define mallocalign(n, a, o, s) ialloc((n), (a))
#include "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 */
Rms = 0xDA, /* Receive Packet Maximum Size */
Cplusc = 0xE0, /* C+ Command */
Rdsar = 0xE4, /* Receive Descriptor Start Address */
Mtps = 0xEC, /* Max. Transmit Packet Size */
};
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 */
Macv11 = 0x30000000, /* RTL8168B/8111B */
Macv12 = 0x38000000, /* RTL8169B/8111B */
Macv13 = 0x34000000, /* RTL8101E */
Macv14 = 0x30800000, /* RTL8100E */
Macv15 = 0x38800000, /* RTL8100E */
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 */
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 */
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, /* Large Send */
};
enum { /* Receive Descriptor control */
RxflMASK = 0x00003FFF, /* Receive Frame Length */
RxflSHIFT = 0,
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 = 8, /* Transmit Ring */
Nrd = 32, /* Receive Ring */
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 ? */
Rtl8169c = (0x0116<<16)|0x16EC, /* RTL8169C+ (USR997902) */
Rtl8169sc = (0x8167<<16)|0x10EC, /* RTL8169SC */
Rtl8168b = (0x8168<<16)|0x10EC, /* RTL8168B */
Rtl8169 = (0x8169<<16)|0x10EC, /* RTL8169 */
};
typedef struct Ctlr Ctlr;
typedef struct Ctlr {
int port;
Pcidev* pcidev;
Ctlr* next;
int active;
void* nic;
QLock alock; /* attach */
Lock ilock; /* init */
int init; /* */
int pciv; /* */
int macv; /* MAC version */
int phyv; /* PHY version */
Mii* mii;
Lock tlock; /* transmit */
D* td; /* descriptor ring */
Block** tb; /* transmit buffers */
int ntd;
int tdh; /* head - producer index (host) */
int tdt; /* tail - consumer index (NIC) */
int ntdfree;
int ntq;
int mtps; /* Max. Transmit Packet Size */
Lock rlock; /* receive */
D* rd; /* descriptor ring */
void** rb; /* receive buffers */
int nrd;
int rdh; /* head - producer index (NIC) */
int rdt; /* tail - consumer index (host) */
int nrdfree;
int rcr; /* receive configuration register */
QLock slock; /* statistics */
Dtcc* dtcc;
uint txdu;
uint tcpf;
uint udpf;
uint ipf;
uint fovf;
uint ierrs;
uint rer;
uint rdu;
uint punlc;
uint fovw;
} 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), (int)(b)))
#define csr16w(c, r, w) (outs((c)->port+(r), (ushort)(w)))
#define csr32w(c, r, l) (outl((c)->port+(r), (ulong)(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;
/*
* 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, 0x82, 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("oui %#ux phyno %d, macv = %#8.8ux phyv = %#4.4ux\n",
phy->oui, phy->phyno, ctlr->macv, ctlr->phyv);
miiane(ctlr->mii, ~0, ~0, ~0);
return 0;
}
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
rtl8169detach(Ether* edev)
{
rtl8169reset(edev->ctlr);
}
static void
rtl8169replenish(Ctlr* ctlr)
{
D *d;
int rdt;
void *bp;
rdt = ctlr->rdt;
while(NEXT(rdt, ctlr->nrd) != ctlr->rdh){
d = &ctlr->rd[rdt];
if(ctlr->rb[rdt] == nil){
/*
* simple allocation for now
*/
bp = mallocalign(Mps, 8, 0, 0);
ctlr->rb[rdt] = bp;
d->addrlo = PCIWADDR(bp);
d->addrhi = 0;
}
coherence();
d->control |= Own|Mps;
rdt = NEXT(rdt, ctlr->nrd);
ctlr->nrdfree++;
}
ctlr->rdt = rdt;
}
static int
rtl8169init(Ether* edev)
{
u32int r;
Ctlr *ctlr;
u8int cplusc;
ctlr = edev->ctlr;
ilock(&ctlr->ilock);
rtl8169halt(ctlr);
/*
* MAC Address.
* Must put chip into config register write enable mode.
*/
csr8w(ctlr, Cr9346, Eem1|Eem0);
r = (edev->ea[3]<<24)|(edev->ea[2]<<16)|(edev->ea[1]<<8)|edev->ea[0];
csr32w(ctlr, Idr0, r);
r = (edev->ea[5]<<8)|edev->ea[4];
csr32w(ctlr, Idr0+4, r);
/*
* Transmitter.
*/
memset(ctlr->td, 0, sizeof(D)*ctlr->ntd);
ctlr->tdh = ctlr->tdt = 0;
ctlr->td[ctlr->ntd-1].control = Eor;
/*
* Receiver.
* Need to do something here about the multicast filter.
*/
memset(ctlr->rd, 0, sizeof(D)*ctlr->nrd);
ctlr->rdh = ctlr->rdt = 0;
ctlr->rd[ctlr->nrd-1].control = Eor;
rtl8169replenish(ctlr);
ctlr->rcr = Rxfthnone|Mrxdmaunlimited|Ab|Apm;
/*
* Mtps is in units of 128 except for the RTL8169
* where is is 32. If using jumbo frames should be
* set to 0x3F.
* Setting Mulrw in Cplusc disables the Tx/Rx DMA burst
* settings in Tcr/Rcr; the (1<<14) is magic.
*/
ctlr->mtps = HOWMANY(Mps, 128);
cplusc = csr16r(ctlr, Cplusc) & ~(1<<14);
cplusc |= Rxchksum|Mulrw;
switch(ctlr->macv){
default:
return -1;
case Macv01:
ctlr->mtps = HOWMANY(Mps, 32);
break;
case Macv02:
case Macv03:
cplusc |= (1<<14); /* magic */
break;
case Macv05:
/*
* This is interpreted from clearly bogus code
* in the manufacturer-supplied driver, it could
* be wrong. Untested.
*/
r = csr8r(ctlr, Config2) & 0x07;
if(r == 0x01) /* 66MHz PCI */
csr32w(ctlr, 0x7C, 0x0007FFFF); /* magic */
else
csr32w(ctlr, 0x7C, 0x0007FF00); /* magic */
pciclrmwi(ctlr->pcidev);
break;
case Macv13:
/*
* This is interpreted from clearly bogus code
* in the manufacturer-supplied driver, it could
* be wrong. Untested.
*/
pcicfgw8(ctlr->pcidev, 0x68, 0x00); /* magic */
pcicfgw8(ctlr->pcidev, 0x69, 0x08); /* magic */
break;
case Macv04:
case Macv11:
case Macv12:
case Macv14:
case Macv15:
break;
}
/*
* Enable receiver/transmitter.
* Need to do this first or some of the settings below
* won't take.
*/
switch(ctlr->pciv){
default:
csr8w(ctlr, Cr, Te|Re);
csr32w(ctlr, Tcr, Ifg1|Ifg0|Mtxdmaunlimited);
csr32w(ctlr, Rcr, ctlr->rcr);
case Rtl8169sc:
case Rtl8168b:
break;
}
/*
* Interrupts.
* Disable Tdu|Tok for now, the transmit routine will tidy.
* Tdu means the NIC ran out of descriptors to send, so it
* doesn't really need to ever be on.
*/
csr32w(ctlr, Timerint, 0);
csr16w(ctlr, Imr, Serr|Timeout|Fovw|Punlc|Rdu|Ter|Rer|Rok);
/*
* Clear missed-packet counter;
* initial early transmit threshold value;
* set the descriptor ring base addresses;
* set the maximum receive packet size;
* no early-receive interrupts.
*/
csr32w(ctlr, Mpc, 0);
csr8w(ctlr, Mtps, ctlr->mtps);
csr32w(ctlr, Tnpds+4, 0);
csr32w(ctlr, Tnpds, PCIWADDR(ctlr->td));
csr32w(ctlr, Rdsar+4, 0);
csr32w(ctlr, Rdsar, PCIWADDR(ctlr->rd));
csr16w(ctlr, Rms, Mps);
r = csr16r(ctlr, Mulint) & 0xF000;
csr16w(ctlr, Mulint, r);
csr16w(ctlr, Cplusc, cplusc);
/*
* Set configuration.
*/
switch(ctlr->pciv){
default:
break;
case Rtl8169sc:
csr16w(ctlr, 0xE2, 0); /* magic */
csr8w(ctlr, Cr, Te|Re);
csr32w(ctlr, Tcr, Ifg1|Ifg0|Mtxdmaunlimited);
csr32w(ctlr, Rcr, ctlr->rcr);
break;
case Rtl8168b:
case Rtl8169c:
csr16w(ctlr, 0xE2, 0); /* magic */
csr16w(ctlr, Cplusc, 0x2000); /* magic */
csr8w(ctlr, Cr, Te|Re);
csr32w(ctlr, Tcr, Ifg1|Ifg0|Mtxdmaunlimited);
csr32w(ctlr, Rcr, ctlr->rcr);
csr16w(ctlr, Rms, 0x0800);
csr8w(ctlr, Mtps, 0x3F);
break;
}
csr8w(ctlr, Cr9346, 0);
iunlock(&ctlr->ilock);
// rtl8169mii(ctlr);
return 0;
}
static void
rtl8169attach(Ether* edev)
{
int timeo;
Ctlr *ctlr;
ctlr = edev->ctlr;
qlock(&ctlr->alock);
if(ctlr->init == 0){
/*
* Handle allocation/init errors here.
*/
ctlr->td = xspanalloc(sizeof(D)*Ntd, 256, 0);
ctlr->tb = malloc(Ntd*sizeof(Block*));
ctlr->ntd = Ntd;
ctlr->rd = xspanalloc(sizeof(D)*Nrd, 256, 0);
ctlr->rb = malloc(Nrd*sizeof(Block*));
ctlr->nrd = Nrd;
ctlr->dtcc = xspanalloc(sizeof(Dtcc), 64, 0);
rtl8169init(edev);
ctlr->init = 1;
}
qunlock(&ctlr->alock);
for(timeo = 0; timeo < 3500; timeo++){
if(miistatus(ctlr->mii) == 0)
break;
delay(10);
}
}
static void
rtl8169transmit(Ether* edev)
{
D *d;
Block *bp;
Ctlr *ctlr;
int control, x;
RingBuf *tb;
ctlr = edev->ctlr;
ilock(&ctlr->tlock);
for(x = ctlr->tdh; ctlr->ntq > 0; x = NEXT(x, ctlr->ntd)){
d = &ctlr->td[x];
if((control = d->control) & Own)
break;
/*
* Check errors and log here.
*/
USED(control);
/*
* 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;
d->control &= Eor;
ctlr->ntq--;
}
ctlr->tdh = x;
x = ctlr->tdt;
while(ctlr->ntq < (ctlr->ntd-1)){
tb = &edev->tb[edev->ti];
if(tb->owner != Interface)
break;
bp = allocb(tb->len);
memmove(bp->wp, tb->pkt, tb->len);
memmove(bp->wp+Eaddrlen, edev->ea, Eaddrlen);
bp->wp += tb->len;
tb->owner = Host;
edev->ti = NEXT(edev->ti, edev->ntb);
d = &ctlr->td[x];
d->addrlo = PCIWADDR(bp->rp);
d->addrhi = 0;
ctlr->tb[x] = bp;
coherence();
d->control |= Own|Fs|Ls|((BLEN(bp)<<TxflSHIFT) & TxflMASK);
x = NEXT(x, ctlr->ntd);
ctlr->ntq++;
}
if(x != ctlr->tdt){
ctlr->tdt = x;
csr8w(ctlr, Tppoll, Npq);
}
else if(ctlr->ntq >= (ctlr->ntd-1))
ctlr->txdu++;
iunlock(&ctlr->tlock);
}
static void
rtl8169receive(Ether* edev)
{
D *d;
int len, rdh;
Ctlr *ctlr;
u32int control;
RingBuf *ring;
ctlr = edev->ctlr;
rdh = ctlr->rdh;
for(;;){
d = &ctlr->rd[rdh];
if(d->control & Own)
break;
control = d->control;
if((control & (Fs|Ls|Res)) == (Fs|Ls)){
len = ((control & RxflMASK)>>RxflSHIFT) - 4;
ring = &edev->rb[edev->ri];
if(ring->owner == Interface){
ring->owner = Host;
ring->len = len;
memmove(ring->pkt, ctlr->rb[rdh], len);
edev->ri = NEXT(edev->ri, edev->nrb);
}
}
else{
/*
* Error stuff here.
print("control %#8.8ux\n", control);
*/
}
d->control &= Eor;
ctlr->nrdfree--;
rdh = NEXT(rdh, ctlr->nrd);
}
ctlr->rdh = rdh;
if(ctlr->nrdfree < ctlr->nrd/2)
rtl8169replenish(ctlr);
}
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 & (Fovw|Punlc|Rdu|Rer|Rok)){
rtl8169receive(edev);
if(!(isr & (Punlc|Rok)))
ctlr->ierrs++;
if(isr & Rer)
ctlr->rer++;
if(isr & Rdu)
ctlr->rdu++;
if(isr & Punlc)
ctlr->punlc++;
if(isr & Fovw)
ctlr->fovw++;
isr &= ~(Fovw|Rdu|Rer|Rok);
}
if(isr & (Tdu|Ter|Tok)){
rtl8169transmit(edev);
isr &= ~(Tdu|Ter|Tok);
}
if(isr & Punlc){
// rtl8169link(edev);
isr &= ~Punlc;
}
/*
* Some of the reserved bits get set sometimes...
*/
if(isr & (Serr|Timeout|Tdu|Fovw|Punlc|Rdu|Ter|Tok|Rer|Rok))
panic("rtl8169interrupt: imr %#4.4ux isr %#4.4ux\n",
csr16r(ctlr, Imr), isr);
}
}
static void
rtl8169pci(void)
{
Pcidev *p;
Ctlr *ctlr;
int i, port;
u32int bar;
p = nil;
while(p = pcimatch(p, 0, 0)){
if(p->ccrb != 0x02 || p->ccru != 0)
continue;
switch(i = ((p->did<<16)|p->vid)){
default:
continue;
case Rtl8100e: /* RTL810[01]E ? */
case Rtl8169c: /* RTL8169C */
case Rtl8169sc: /* RTL8169SC */
case Rtl8168b: /* RTL8168B */
case Rtl8169: /* RTL8169 */
break;
case (0xC107<<16)|0x1259: /* Corega CG-LAPCIGT */
i = Rtl8169;
break;
}
bar = p->mem[0].bar;
port = 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));
ctlr->port = port;
ctlr->pcidev = p;
ctlr->pciv = i;
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);
continue;
}
/*
* Extract the chip hardware version,
* needed to configure each properly.
*/
ctlr->macv = csr32r(ctlr, Tcr) & HwveridMASK;
rtl8169mii(ctlr);
pcisetbme(p);
if(rtl8169ctlrhead != nil)
rtl8169ctlrtail->next = ctlr;
else
rtl8169ctlrhead = ctlr;
rtl8169ctlrtail = ctlr;
}
}
int
rtl8169pnp(Ether* edev)
{
u32int r;
Ctlr *ctlr;
if(rtl8169ctlrhead == nil)
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;
/*
* Pull the MAC address out of the chip.
*/
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;
/*
* Linkage to the generic ethernet driver.
*/
edev->attach = rtl8169attach;
edev->transmit = rtl8169transmit;
edev->interrupt = rtl8169interrupt;
edev->detach = rtl8169detach;
// edev->ifstat = rtl8169ifstat;
// edev->ctl = nil;
//
// edev->arg = edev;
// edev->promiscuous = rtl8169promiscuous;
// edev->multicast = rtl8169multicast;
return 0;
}