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Print PCIe Extended Capabilities, from Simon Mages

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ok kettenis mlarkin
This commit is contained in:
deraadt 2017-03-16 22:05:44 +00:00
parent ebd2431fde
commit f9804a945d
2 changed files with 76 additions and 3 deletions
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11
sys/dev/pci/pcireg.h
View File

@ -1,4 +1,4 @@
/* $OpenBSD: pcireg.h,v 1.50 2016/06/02 21:01:51 kettenis Exp $ */
/* $OpenBSD: pcireg.h,v 1.51 2017/03/16 22:05:44 deraadt Exp $ */
/* $NetBSD: pcireg.h,v 1.26 2000/05/10 16:58:42 thorpej Exp $ */
/*
@ -593,6 +593,15 @@ typedef u_int8_t pci_revision_t;
#define PCI_PCIE_RCSR 0x1c
#define PCI_PCIE_LCAP2 0x2c
/*
* PCI Express; enhanced capabilities
*/
#define PCI_PCIE_ECAP 0x100
#define PCI_PCIE_ECAP_ID(x) (((x) & 0x0000ffff))
#define PCI_PCIE_ECAP_VER(x) (((x) >> 16) & 0x0f)
#define PCI_PCIE_ECAP_NEXT(x) ((x) >> 20)
#define PCI_PCIE_ECAP_LAST 0x0
/*
* Extended Message Signaled Interrups; access via capability pointer.
*/

68
usr.sbin/pcidump/pcidump.c
View File

@ -1,4 +1,4 @@
/* $OpenBSD: pcidump.c,v 1.41 2017/01/04 03:35:29 dlg Exp $ */
/* $OpenBSD: pcidump.c,v 1.42 2017/03/16 22:05:46 deraadt Exp $ */
/*
* Copyright (c) 2006, 2007 David Gwynne <loki@animata.net>
@ -102,6 +102,39 @@ const char *pci_capnames[] = {
"PCI Advanced Features"
};
const char *pci_enhanced_capnames[] = {
"Unknown",
"Advanced Error Reporting",
"Virtual Channel Capability",
"Device Serial Number",
"Power Budgeting",
"Root Complex Link Declaration",
"Root Complex Internal Link Control",
"Root Complex Event Collector",
"Multi-Function VC Capability",
"Virtual Channel Capability",
"Root Complex/Root Bridge",
"Vendor-Specific",
"Config Access",
"Access Control Services",
"Alternate Routing ID",
"Address Translation Services",
"Single Root I/O Virtualization",
"Multi Root I/O Virtualization",
"Multicast",
"Page Request Interface",
"Reserved for AMD",
"Resizable BAR",
"Dynamic Power Allocation",
"TPH Requester",
"Latency Tolerance Reporting",
"Secondary PCIe Capability",
"Protocol Multiplexing",
"Process Address Space ID",
"Downstream Port Containment",
"Precision Time Measurement",
};
int
main(int argc, char *argv[])
{
@ -355,6 +388,35 @@ dump_pcie_linkspeed(int bus, int dev, int func, uint8_t ptr)
printf(" GT/s Link Width: x%d / x%d\n", swidth, cwidth);
}
void
dump_pcie_enhanced_caplist(int bus, int dev, int func)
{
u_int32_t reg;
u_int16_t ptr;
u_int16_t ecap;
ptr = PCI_PCIE_ECAP;
do {
if (pci_read(bus, dev, func, ptr, &reg) != 0)
return;
if (PCI_PCIE_ECAP_ID(reg) == 0xffff &&
PCI_PCIE_ECAP_NEXT(reg) == PCI_PCIE_ECAP_LAST)
return;
ecap = PCI_PCIE_ECAP_ID(reg);
if (ecap >= nitems(pci_enhanced_capnames))
ecap = 0;
printf("\t0x%04x: Enhanced Capability 0x%02x: ", ptr, ecap);
printf("%s\n", pci_enhanced_capnames[ecap]);
ptr = PCI_PCIE_ECAP_NEXT(reg);
} while (ptr != PCI_PCIE_ECAP_LAST);
}
void
dump_caplist(int bus, int dev, int func, u_int8_t ptr)
{
@ -379,8 +441,10 @@ dump_caplist(int bus, int dev, int func, u_int8_t ptr)
printf("%s\n", pci_capnames[cap]);
if (cap == PCI_CAP_PWRMGMT)
dump_pci_powerstate(bus, dev, func, ptr);
if (cap == PCI_CAP_PCIEXPRESS)
if (cap == PCI_CAP_PCIEXPRESS) {
dump_pcie_linkspeed(bus, dev, func, ptr);
dump_pcie_enhanced_caplist(bus, dev, func);
}
ptr = PCI_CAPLIST_NEXT(reg);
}
}