mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-05 10:56:48 +07:00
1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
173 lines
5.2 KiB
C
173 lines
5.2 KiB
C
/*
|
|
drivers/net/tulip/pnic.c
|
|
|
|
Maintained by Jeff Garzik <jgarzik@pobox.com>
|
|
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.
|
|
|
|
Please refer to Documentation/DocBook/tulip-user.{pdf,ps,html}
|
|
for more information on this driver, or visit the project
|
|
Web page at http://sourceforge.net/projects/tulip/
|
|
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/pci.h>
|
|
#include "tulip.h"
|
|
|
|
|
|
void pnic_do_nway(struct net_device *dev)
|
|
{
|
|
struct tulip_private *tp = netdev_priv(dev);
|
|
void __iomem *ioaddr = tp->base_addr;
|
|
u32 phy_reg = ioread32(ioaddr + 0xB8);
|
|
u32 new_csr6 = tp->csr6 & ~0x40C40200;
|
|
|
|
if (phy_reg & 0x78000000) { /* Ignore baseT4 */
|
|
if (phy_reg & 0x20000000) dev->if_port = 5;
|
|
else if (phy_reg & 0x40000000) dev->if_port = 3;
|
|
else if (phy_reg & 0x10000000) dev->if_port = 4;
|
|
else if (phy_reg & 0x08000000) dev->if_port = 0;
|
|
tp->nwayset = 1;
|
|
new_csr6 = (dev->if_port & 1) ? 0x01860000 : 0x00420000;
|
|
iowrite32(0x32 | (dev->if_port & 1), ioaddr + CSR12);
|
|
if (dev->if_port & 1)
|
|
iowrite32(0x1F868, ioaddr + 0xB8);
|
|
if (phy_reg & 0x30000000) {
|
|
tp->full_duplex = 1;
|
|
new_csr6 |= 0x00000200;
|
|
}
|
|
if (tulip_debug > 1)
|
|
printk(KERN_DEBUG "%s: PNIC autonegotiated status %8.8x, %s.\n",
|
|
dev->name, phy_reg, medianame[dev->if_port]);
|
|
if (tp->csr6 != new_csr6) {
|
|
tp->csr6 = new_csr6;
|
|
/* Restart Tx */
|
|
tulip_restart_rxtx(tp);
|
|
dev->trans_start = jiffies;
|
|
}
|
|
}
|
|
}
|
|
|
|
void pnic_lnk_change(struct net_device *dev, int csr5)
|
|
{
|
|
struct tulip_private *tp = netdev_priv(dev);
|
|
void __iomem *ioaddr = tp->base_addr;
|
|
int phy_reg = ioread32(ioaddr + 0xB8);
|
|
|
|
if (tulip_debug > 1)
|
|
printk(KERN_DEBUG "%s: PNIC link changed state %8.8x, CSR5 %8.8x.\n",
|
|
dev->name, phy_reg, csr5);
|
|
if (ioread32(ioaddr + CSR5) & TPLnkFail) {
|
|
iowrite32((ioread32(ioaddr + CSR7) & ~TPLnkFail) | TPLnkPass, ioaddr + CSR7);
|
|
/* If we use an external MII, then we mustn't use the
|
|
* internal negotiation.
|
|
*/
|
|
if (tulip_media_cap[dev->if_port] & MediaIsMII)
|
|
return;
|
|
if (! tp->nwayset || jiffies - dev->trans_start > 1*HZ) {
|
|
tp->csr6 = 0x00420000 | (tp->csr6 & 0x0000fdff);
|
|
iowrite32(tp->csr6, ioaddr + CSR6);
|
|
iowrite32(0x30, ioaddr + CSR12);
|
|
iowrite32(0x0201F078, ioaddr + 0xB8); /* Turn on autonegotiation. */
|
|
dev->trans_start = jiffies;
|
|
}
|
|
} else if (ioread32(ioaddr + CSR5) & TPLnkPass) {
|
|
if (tulip_media_cap[dev->if_port] & MediaIsMII) {
|
|
spin_lock(&tp->lock);
|
|
tulip_check_duplex(dev);
|
|
spin_unlock(&tp->lock);
|
|
} else {
|
|
pnic_do_nway(dev);
|
|
}
|
|
iowrite32((ioread32(ioaddr + CSR7) & ~TPLnkPass) | TPLnkFail, ioaddr + CSR7);
|
|
}
|
|
}
|
|
|
|
void pnic_timer(unsigned long data)
|
|
{
|
|
struct net_device *dev = (struct net_device *)data;
|
|
struct tulip_private *tp = netdev_priv(dev);
|
|
void __iomem *ioaddr = tp->base_addr;
|
|
int next_tick = 60*HZ;
|
|
|
|
if(!ioread32(ioaddr + CSR7)) {
|
|
/* the timer was called due to a work overflow
|
|
* in the interrupt handler. Skip the connection
|
|
* checks, the nic is definitively speaking with
|
|
* his link partner.
|
|
*/
|
|
goto too_good_connection;
|
|
}
|
|
|
|
if (tulip_media_cap[dev->if_port] & MediaIsMII) {
|
|
spin_lock_irq(&tp->lock);
|
|
if (tulip_check_duplex(dev) > 0)
|
|
next_tick = 3*HZ;
|
|
spin_unlock_irq(&tp->lock);
|
|
} else {
|
|
int csr12 = ioread32(ioaddr + CSR12);
|
|
int new_csr6 = tp->csr6 & ~0x40C40200;
|
|
int phy_reg = ioread32(ioaddr + 0xB8);
|
|
int csr5 = ioread32(ioaddr + CSR5);
|
|
|
|
if (tulip_debug > 1)
|
|
printk(KERN_DEBUG "%s: PNIC timer PHY status %8.8x, %s "
|
|
"CSR5 %8.8x.\n",
|
|
dev->name, phy_reg, medianame[dev->if_port], csr5);
|
|
if (phy_reg & 0x04000000) { /* Remote link fault */
|
|
iowrite32(0x0201F078, ioaddr + 0xB8);
|
|
next_tick = 1*HZ;
|
|
tp->nwayset = 0;
|
|
} else if (phy_reg & 0x78000000) { /* Ignore baseT4 */
|
|
pnic_do_nway(dev);
|
|
next_tick = 60*HZ;
|
|
} else if (csr5 & TPLnkFail) { /* 100baseTx link beat */
|
|
if (tulip_debug > 1)
|
|
printk(KERN_DEBUG "%s: %s link beat failed, CSR12 %4.4x, "
|
|
"CSR5 %8.8x, PHY %3.3x.\n",
|
|
dev->name, medianame[dev->if_port], csr12,
|
|
ioread32(ioaddr + CSR5), ioread32(ioaddr + 0xB8));
|
|
next_tick = 3*HZ;
|
|
if (tp->medialock) {
|
|
} else if (tp->nwayset && (dev->if_port & 1)) {
|
|
next_tick = 1*HZ;
|
|
} else if (dev->if_port == 0) {
|
|
dev->if_port = 3;
|
|
iowrite32(0x33, ioaddr + CSR12);
|
|
new_csr6 = 0x01860000;
|
|
iowrite32(0x1F868, ioaddr + 0xB8);
|
|
} else {
|
|
dev->if_port = 0;
|
|
iowrite32(0x32, ioaddr + CSR12);
|
|
new_csr6 = 0x00420000;
|
|
iowrite32(0x1F078, ioaddr + 0xB8);
|
|
}
|
|
if (tp->csr6 != new_csr6) {
|
|
tp->csr6 = new_csr6;
|
|
/* Restart Tx */
|
|
tulip_restart_rxtx(tp);
|
|
dev->trans_start = jiffies;
|
|
if (tulip_debug > 1)
|
|
printk(KERN_INFO "%s: Changing PNIC configuration to %s "
|
|
"%s-duplex, CSR6 %8.8x.\n",
|
|
dev->name, medianame[dev->if_port],
|
|
tp->full_duplex ? "full" : "half", new_csr6);
|
|
}
|
|
}
|
|
}
|
|
too_good_connection:
|
|
mod_timer(&tp->timer, RUN_AT(next_tick));
|
|
if(!ioread32(ioaddr + CSR7)) {
|
|
if (tulip_debug > 1)
|
|
printk(KERN_INFO "%s: sw timer wakeup.\n", dev->name);
|
|
disable_irq(dev->irq);
|
|
tulip_refill_rx(dev);
|
|
enable_irq(dev->irq);
|
|
iowrite32(tulip_tbl[tp->chip_id].valid_intrs, ioaddr + CSR7);
|
|
}
|
|
}
|