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Print out the full PCIe link negotiation during dmesg.

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I found this useful when checking whether a NIC is in a PCIE 3.0 8x slot
or not.

Reviewed by:	np
Sponsored by:	Netflix, inc.
This commit is contained in:
Adrian Chadd 2013-12-10 00:07:04 +00:00
parent b75256cfd2
commit ac68deae6d
1 changed files with 18 additions and 2 deletions
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20
sys/dev/cxgbe/t4_main.c
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@ -549,6 +549,7 @@ t4_attach(device_t dev)
#ifdef TCP_OFFLOAD
int ofld_rqidx, ofld_tqidx;
#endif
const char *pcie_ts;
sc = device_get_softc(dev);
sc->dev = dev;
@ -816,9 +817,24 @@ t4_attach(device_t dev)
goto done;
}
switch (sc->params.pci.speed) {
case 0x1:
pcie_ts = "2.5";
break;
case 0x2:
pcie_ts = "5.0";
break;
case 0x3:
pcie_ts = "8.0";
break;
default:
pcie_ts = "??";
break;
}
device_printf(dev,
"PCIe x%d, %d ports, %d %s interrupt%s, %d eq, %d iq\n",
sc->params.pci.width, sc->params.nports, sc->intr_count,
"PCIe x%d (%s GTS/s) (%d), %d ports, %d %s interrupt%s, %d eq, %d iq\n",
sc->params.pci.width, pcie_ts, sc->params.pci.speed,
sc->params.nports, sc->intr_count,
sc->intr_type == INTR_MSIX ? "MSI-X" :
(sc->intr_type == INTR_MSI ? "MSI" : "INTx"),
sc->intr_count > 1 ? "s" : "", sc->sge.neq, sc->sge.niq);