mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
257 lines
8.0 KiB
257 lines
8.0 KiB
/* |
|
drivers/net/ethernet/dec/tulip/21142.c |
|
|
|
Copyright 2000,2001 The Linux Kernel Team |
|
Written/copyright 1994-2001 by Donald Becker. |
|
|
|
This software may be used and distributed according to the terms |
|
of the GNU General Public License, incorporated herein by reference. |
|
|
|
DC21143 manual "21143 PCI/CardBus 10/100Mb/s Ethernet LAN Controller |
|
Hardware Reference Manual" is currently available at : |
|
http://developer.intel.com/design/network/manuals/278074.htm |
|
|
|
Please submit bugs to http://bugzilla.kernel.org/ . |
|
*/ |
|
|
|
#include <linux/delay.h> |
|
#include "tulip.h" |
|
|
|
|
|
static u16 t21142_csr13[] = { 0x0001, 0x0009, 0x0009, 0x0000, 0x0001, }; |
|
u16 t21142_csr14[] = { 0xFFFF, 0x0705, 0x0705, 0x0000, 0x7F3D, }; |
|
static u16 t21142_csr15[] = { 0x0008, 0x0006, 0x000E, 0x0008, 0x0008, }; |
|
|
|
|
|
/* Handle the 21143 uniquely: do autoselect with NWay, not the EEPROM list |
|
of available transceivers. */ |
|
void t21142_media_task(struct work_struct *work) |
|
{ |
|
struct tulip_private *tp = |
|
container_of(work, struct tulip_private, media_work); |
|
struct net_device *dev = tp->dev; |
|
void __iomem *ioaddr = tp->base_addr; |
|
int csr12 = ioread32(ioaddr + CSR12); |
|
int next_tick = 60*HZ; |
|
int new_csr6 = 0; |
|
int csr14 = ioread32(ioaddr + CSR14); |
|
|
|
/* CSR12[LS10,LS100] are not reliable during autonegotiation */ |
|
if ((csr14 & 0x80) && (csr12 & 0x7000) != 0x5000) |
|
csr12 |= 6; |
|
if (tulip_debug > 2) |
|
dev_info(&dev->dev, "21143 negotiation status %08x, %s\n", |
|
csr12, medianame[dev->if_port]); |
|
if (tulip_media_cap[dev->if_port] & MediaIsMII) { |
|
if (tulip_check_duplex(dev) < 0) { |
|
netif_carrier_off(dev); |
|
next_tick = 3*HZ; |
|
} else { |
|
netif_carrier_on(dev); |
|
next_tick = 60*HZ; |
|
} |
|
} else if (tp->nwayset) { |
|
/* Don't screw up a negotiated session! */ |
|
if (tulip_debug > 1) |
|
dev_info(&dev->dev, |
|
"Using NWay-set %s media, csr12 %08x\n", |
|
medianame[dev->if_port], csr12); |
|
} else if (tp->medialock) { |
|
; |
|
} else if (dev->if_port == 3) { |
|
if (csr12 & 2) { /* No 100mbps link beat, revert to 10mbps. */ |
|
if (tulip_debug > 1) |
|
dev_info(&dev->dev, |
|
"No 21143 100baseTx link beat, %08x, trying NWay\n", |
|
csr12); |
|
t21142_start_nway(dev); |
|
next_tick = 3*HZ; |
|
} |
|
} else if ((csr12 & 0x7000) != 0x5000) { |
|
/* Negotiation failed. Search media types. */ |
|
if (tulip_debug > 1) |
|
dev_info(&dev->dev, |
|
"21143 negotiation failed, status %08x\n", |
|
csr12); |
|
if (!(csr12 & 4)) { /* 10mbps link beat good. */ |
|
new_csr6 = 0x82420000; |
|
dev->if_port = 0; |
|
iowrite32(0, ioaddr + CSR13); |
|
iowrite32(0x0003FFFF, ioaddr + CSR14); |
|
iowrite16(t21142_csr15[dev->if_port], ioaddr + CSR15); |
|
iowrite32(t21142_csr13[dev->if_port], ioaddr + CSR13); |
|
} else { |
|
/* Select 100mbps port to check for link beat. */ |
|
new_csr6 = 0x83860000; |
|
dev->if_port = 3; |
|
iowrite32(0, ioaddr + CSR13); |
|
iowrite32(0x0003FFFF, ioaddr + CSR14); |
|
iowrite16(8, ioaddr + CSR15); |
|
iowrite32(1, ioaddr + CSR13); |
|
} |
|
if (tulip_debug > 1) |
|
dev_info(&dev->dev, "Testing new 21143 media %s\n", |
|
medianame[dev->if_port]); |
|
if (new_csr6 != (tp->csr6 & ~0x00D5)) { |
|
tp->csr6 &= 0x00D5; |
|
tp->csr6 |= new_csr6; |
|
iowrite32(0x0301, ioaddr + CSR12); |
|
tulip_restart_rxtx(tp); |
|
} |
|
next_tick = 3*HZ; |
|
} |
|
|
|
/* mod_timer synchronizes us with potential add_timer calls |
|
* from interrupts. |
|
*/ |
|
mod_timer(&tp->timer, RUN_AT(next_tick)); |
|
} |
|
|
|
|
|
void t21142_start_nway(struct net_device *dev) |
|
{ |
|
struct tulip_private *tp = netdev_priv(dev); |
|
void __iomem *ioaddr = tp->base_addr; |
|
int csr14 = ((tp->sym_advertise & 0x0780) << 9) | |
|
((tp->sym_advertise & 0x0020) << 1) | 0xffbf; |
|
|
|
dev->if_port = 0; |
|
tp->nway = tp->mediasense = 1; |
|
tp->nwayset = tp->lpar = 0; |
|
if (tulip_debug > 1) |
|
netdev_dbg(dev, "Restarting 21143 autonegotiation, csr14=%08x\n", |
|
csr14); |
|
iowrite32(0x0001, ioaddr + CSR13); |
|
udelay(100); |
|
iowrite32(csr14, ioaddr + CSR14); |
|
tp->csr6 = 0x82420000 | (tp->sym_advertise & 0x0040 ? FullDuplex : 0); |
|
iowrite32(tp->csr6, ioaddr + CSR6); |
|
if (tp->mtable && tp->mtable->csr15dir) { |
|
iowrite32(tp->mtable->csr15dir, ioaddr + CSR15); |
|
iowrite32(tp->mtable->csr15val, ioaddr + CSR15); |
|
} else |
|
iowrite16(0x0008, ioaddr + CSR15); |
|
iowrite32(0x1301, ioaddr + CSR12); /* Trigger NWAY. */ |
|
} |
|
|
|
|
|
|
|
void t21142_lnk_change(struct net_device *dev, int csr5) |
|
{ |
|
struct tulip_private *tp = netdev_priv(dev); |
|
void __iomem *ioaddr = tp->base_addr; |
|
int csr12 = ioread32(ioaddr + CSR12); |
|
int csr14 = ioread32(ioaddr + CSR14); |
|
|
|
/* CSR12[LS10,LS100] are not reliable during autonegotiation */ |
|
if ((csr14 & 0x80) && (csr12 & 0x7000) != 0x5000) |
|
csr12 |= 6; |
|
if (tulip_debug > 1) |
|
dev_info(&dev->dev, |
|
"21143 link status interrupt %08x, CSR5 %x, %08x\n", |
|
csr12, csr5, csr14); |
|
|
|
/* If NWay finished and we have a negotiated partner capability. */ |
|
if (tp->nway && !tp->nwayset && (csr12 & 0x7000) == 0x5000) { |
|
int setup_done = 0; |
|
int negotiated = tp->sym_advertise & (csr12 >> 16); |
|
tp->lpar = csr12 >> 16; |
|
tp->nwayset = 1; |
|
/* If partner cannot negotiate, it is 10Mbps Half Duplex */ |
|
if (!(csr12 & 0x8000)) dev->if_port = 0; |
|
else if (negotiated & 0x0100) dev->if_port = 5; |
|
else if (negotiated & 0x0080) dev->if_port = 3; |
|
else if (negotiated & 0x0040) dev->if_port = 4; |
|
else if (negotiated & 0x0020) dev->if_port = 0; |
|
else { |
|
tp->nwayset = 0; |
|
if ((csr12 & 2) == 0 && (tp->sym_advertise & 0x0180)) |
|
dev->if_port = 3; |
|
} |
|
tp->full_duplex = (tulip_media_cap[dev->if_port] & MediaAlwaysFD) ? 1:0; |
|
|
|
if (tulip_debug > 1) { |
|
if (tp->nwayset) |
|
dev_info(&dev->dev, |
|
"Switching to %s based on link negotiation %04x & %04x = %04x\n", |
|
medianame[dev->if_port], |
|
tp->sym_advertise, tp->lpar, |
|
negotiated); |
|
else |
|
dev_info(&dev->dev, |
|
"Autonegotiation failed, using %s, link beat status %04x\n", |
|
medianame[dev->if_port], csr12); |
|
} |
|
|
|
if (tp->mtable) { |
|
int i; |
|
for (i = 0; i < tp->mtable->leafcount; i++) |
|
if (tp->mtable->mleaf[i].media == dev->if_port) { |
|
int startup = ! ((tp->chip_id == DC21143 && (tp->revision == 48 || tp->revision == 65))); |
|
tp->cur_index = i; |
|
tulip_select_media(dev, startup); |
|
setup_done = 1; |
|
break; |
|
} |
|
} |
|
if ( ! setup_done) { |
|
tp->csr6 = (dev->if_port & 1 ? 0x838E0000 : 0x82420000) | (tp->csr6 & 0x20ff); |
|
if (tp->full_duplex) |
|
tp->csr6 |= 0x0200; |
|
iowrite32(1, ioaddr + CSR13); |
|
} |
|
#if 0 /* Restart shouldn't be needed. */ |
|
iowrite32(tp->csr6 | RxOn, ioaddr + CSR6); |
|
if (tulip_debug > 2) |
|
netdev_dbg(dev, " Restarting Tx and Rx, CSR5 is %08x\n", |
|
ioread32(ioaddr + CSR5)); |
|
#endif |
|
tulip_start_rxtx(tp); |
|
if (tulip_debug > 2) |
|
netdev_dbg(dev, " Setting CSR6 %08x/%x CSR12 %08x\n", |
|
tp->csr6, ioread32(ioaddr + CSR6), |
|
ioread32(ioaddr + CSR12)); |
|
} else if ((tp->nwayset && (csr5 & 0x08000000) && |
|
(dev->if_port == 3 || dev->if_port == 5) && |
|
(csr12 & 2) == 2) || |
|
(tp->nway && (csr5 & (TPLnkFail)))) { |
|
/* Link blew? Maybe restart NWay. */ |
|
del_timer_sync(&tp->timer); |
|
t21142_start_nway(dev); |
|
tp->timer.expires = RUN_AT(3*HZ); |
|
add_timer(&tp->timer); |
|
} else if (dev->if_port == 3 || dev->if_port == 5) { |
|
if (tulip_debug > 1) |
|
dev_info(&dev->dev, "21143 %s link beat %s\n", |
|
medianame[dev->if_port], |
|
(csr12 & 2) ? "failed" : "good"); |
|
if ((csr12 & 2) && ! tp->medialock) { |
|
del_timer_sync(&tp->timer); |
|
t21142_start_nway(dev); |
|
tp->timer.expires = RUN_AT(3*HZ); |
|
add_timer(&tp->timer); |
|
} else if (dev->if_port == 5) |
|
iowrite32(csr14 & ~0x080, ioaddr + CSR14); |
|
} else if (dev->if_port == 0 || dev->if_port == 4) { |
|
if ((csr12 & 4) == 0) |
|
dev_info(&dev->dev, "21143 10baseT link beat good\n"); |
|
} else if (!(csr12 & 4)) { /* 10mbps link beat good. */ |
|
if (tulip_debug) |
|
dev_info(&dev->dev, "21143 10mbps sensed media\n"); |
|
dev->if_port = 0; |
|
} else if (tp->nwayset) { |
|
if (tulip_debug) |
|
dev_info(&dev->dev, "21143 using NWay-set %s, csr6 %08x\n", |
|
medianame[dev->if_port], tp->csr6); |
|
} else { /* 100mbps link beat good. */ |
|
if (tulip_debug) |
|
dev_info(&dev->dev, "21143 100baseTx sensed media\n"); |
|
dev->if_port = 3; |
|
tp->csr6 = 0x838E0000 | (tp->csr6 & 0x20ff); |
|
iowrite32(0x0003FF7F, ioaddr + CSR14); |
|
iowrite32(0x0301, ioaddr + CSR12); |
|
tulip_restart_rxtx(tp); |
|
} |
|
} |
|
|
|
|
|
|