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use version two of the PCIe capability when displaying link speeds

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ok mpi@
This commit is contained in:
jsg 2013-08-30 06:46:39 +00:00
parent 6cb982a7b3
commit e1b2e8d405
1 changed files with 25 additions and 19 deletions
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44
usr.sbin/pcidump/pcidump.c
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@ -1,4 +1,4 @@
/* $OpenBSD: pcidump.c,v 1.33 2013/06/15 19:45:03 kettenis Exp $ */
/* $OpenBSD: pcidump.c,v 1.34 2013/08/30 06:46:39 jsg Exp $ */
/*
* Copyright (c) 2006, 2007 David Gwynne <loki@animata.net>
@ -282,42 +282,48 @@ probe(int bus, int dev, int func)
void
print_pcie_ls(uint8_t speed)
{
switch (speed) {
case 1:
printf("2.5");
break;
case 2:
printf("5.0");
break;
case 3:
if (speed & 4)
printf("8.0");
break;
default:
else if (speed & 2)
printf("5.0");
else if (speed & 1)
printf("2.5");
else
printf("unknown (%d)", speed);
}
}
void
dump_pcie_linkspeed(int bus, int dev, int func, uint8_t ptr)
{
u_int32_t creg, sreg;
u_int32_t lcap, sreg, lcap2 = 0, xcap;
u_int8_t cap, cwidth, cspeed, swidth, sspeed;
if (pci_read(bus, dev, func, ptr + PCI_PCIE_LCAP, &creg) != 0)
if (pci_read(bus, dev, func, ptr + PCI_PCIE_XCAP, &xcap) != 0)
return;
if (PCI_PCIE_XCAP_VER(xcap) >= 2) {
if (pci_read(bus, dev, func, ptr + PCI_PCIE_LCAP2, &lcap2) != 0)
lcap2 = 0;
else
cspeed = (lcap2 & 0x0e) >> 1;
}
if (pci_read(bus, dev, func, ptr + PCI_PCIE_LCAP, &lcap) != 0)
return;
if (lcap2 == 0)
cspeed = lcap & 0x0f;
if (pci_read(bus, dev, func, ptr + PCI_PCIE_LCSR, &sreg) != 0)
return;
sreg = sreg >> 16;
cwidth = (creg >> 4) & 0x3f;
swidth = (sreg >> 4) & 0x3f;
cspeed = creg & 0x0f;
sspeed = sreg & 0x0f;
cwidth = (lcap >> 4) & 0x3f;
if (cwidth == 0)
return;
swidth = (sreg >> 4) & 0x3f;
sspeed = sreg & 0x0f;
printf("\t Link Speed: ");
print_pcie_ls(sspeed);
printf(" / ");