diff options
Diffstat (limited to 'usr.sbin/pcidump/pcidump.c')
| -rw-r--r-- | usr.sbin/pcidump/pcidump.c | 50 |
1 files changed, 49 insertions, 1 deletions
diff --git a/usr.sbin/pcidump/pcidump.c b/usr.sbin/pcidump/pcidump.c index aea5543dcb2..3e846e23a6a 100644 --- a/usr.sbin/pcidump/pcidump.c +++ b/usr.sbin/pcidump/pcidump.c @@ -1,4 +1,4 @@ -/* $OpenBSD: pcidump.c,v 1.22 2010/03/01 19:00:47 kettenis Exp $ */ +/* $OpenBSD: pcidump.c,v 1.23 2010/08/02 10:17:10 jsg Exp $ */ /* * Copyright (c) 2006, 2007 David Gwynne <loki@animata.net> @@ -44,6 +44,8 @@ const char *str2busdevfunc(const char *, int *, int *, int *); int pci_nfuncs(int, int); int pci_read(int, int, int, u_int32_t, u_int32_t *); void dump_caplist(int, int, int, u_int8_t); +void dump_pcie_linkspeed(int, int, int, uint8_t); +void print_pcie_ls(uint8_t); int dump_rom(int, int, int); int dump_vga_bios(void); @@ -266,6 +268,50 @@ 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; + default: + printf("unknown (%d)", speed); + } +} + +void +dump_pcie_linkspeed(int bus, int dev, int func, uint8_t ptr) +{ + u_int32_t creg, sreg; + u_int8_t cap, cwidth, cspeed, swidth, sspeed; + + if (pci_read(bus, dev, func, ptr + PCI_PCIE_LCAP, &creg) != 0) + return; + + 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; + + if (cwidth == 0) + return; + + printf("\t Link Speed: "); + print_pcie_ls(sspeed); + printf(" / "); + print_pcie_ls(cspeed); + + printf(" Gb/s Link Width: x%d / x%d\n", swidth, cwidth); +} + +void dump_caplist(int bus, int dev, int func, u_int8_t ptr) { u_int32_t reg; @@ -287,6 +333,8 @@ dump_caplist(int bus, int dev, int func, u_int8_t ptr) if (cap > PCI_CAPNAMES_MAX) cap = 0; printf("%s\n", pci_capnames[cap]); + if (cap == PCI_CAP_PCIEXPRESS) + dump_pcie_linkspeed(bus, dev, func, ptr); ptr = PCI_CAPLIST_NEXT(reg); } } |