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Decode PCIe ASPM capability and status.

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This commit is contained in:
Jung-uk Kim 2013-07-18 20:59:58 +00:00
parent 9be99d951b
commit 43a716a640
1 changed files with 38 additions and 20 deletions
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58
usr.sbin/pciconf/cap.c
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@ -391,11 +391,27 @@ link_speed_string(uint8_t speed)
}
}
static const char *
aspm_string(uint8_t aspm)
{
switch (aspm) {
case 1:
return ("L0s");
case 2:
return ("L1");
case 3:
return ("L0s/L1");
default:
return ("disabled");
}
}
static void
cap_express(int fd, struct pci_conf *p, uint8_t ptr)
{
uint32_t val;
uint16_t flags;
uint32_t cap;
uint16_t ctl, flags, sta;
flags = read_config(fd, &p->pc_sel, ptr + PCIER_FLAGS, 2);
printf("PCI-Express %d ", flags & PCIEM_FLAGS_VERSION);
@ -435,26 +451,28 @@ cap_express(int fd, struct pci_conf *p, uint8_t ptr)
printf(" slot");
if (flags & PCIEM_FLAGS_IRQ)
printf(" IRQ %d", (flags & PCIEM_FLAGS_IRQ) >> 9);
val = read_config(fd, &p->pc_sel, ptr + PCIER_DEVICE_CAP, 4);
flags = read_config(fd, &p->pc_sel, ptr + PCIER_DEVICE_CTL, 2);
cap = read_config(fd, &p->pc_sel, ptr + PCIER_DEVICE_CAP, 4);
ctl = read_config(fd, &p->pc_sel, ptr + PCIER_DEVICE_CTL, 2);
printf(" max data %d(%d)",
MAX_PAYLOAD((flags & PCIEM_CTL_MAX_PAYLOAD) >> 5),
MAX_PAYLOAD(val & PCIEM_CAP_MAX_PAYLOAD));
if (val & PCIEM_CAP_FLR)
MAX_PAYLOAD((ctl & PCIEM_CTL_MAX_PAYLOAD) >> 5),
MAX_PAYLOAD(cap & PCIEM_CAP_MAX_PAYLOAD));
if ((cap & PCIEM_CAP_FLR) != 0)
printf(" FLR");
val = read_config(fd, &p->pc_sel, ptr + PCIER_LINK_CAP, 4);
flags = read_config(fd, &p->pc_sel, ptr+ PCIER_LINK_STA, 2);
printf(" link x%d(x%d)", (flags & PCIEM_LINK_STA_WIDTH) >> 4,
(val & PCIEM_LINK_CAP_MAX_WIDTH) >> 4);
/*
* Only print link speed info if the link's max width is
* greater than 0.
*/
if ((val & PCIEM_LINK_CAP_MAX_WIDTH) != 0) {
printf("\n speed");
printf(" %s(%s)", (flags & PCIEM_LINK_STA_WIDTH) == 0 ?
"0.0" : link_speed_string(flags & PCIEM_LINK_STA_SPEED),
link_speed_string(val & PCIEM_LINK_CAP_MAX_SPEED));
cap = read_config(fd, &p->pc_sel, ptr + PCIER_LINK_CAP, 4);
sta = read_config(fd, &p->pc_sel, ptr + PCIER_LINK_STA, 2);
printf(" link x%d(x%d)", (sta & PCIEM_LINK_STA_WIDTH) >> 4,
(cap & PCIEM_LINK_CAP_MAX_WIDTH) >> 4);
if ((cap & (PCIEM_LINK_CAP_MAX_WIDTH | PCIEM_LINK_CAP_ASPM)) != 0)
printf("\n ");
if ((cap & PCIEM_LINK_CAP_MAX_WIDTH) != 0) {
printf(" speed %s(%s)", (sta & PCIEM_LINK_STA_WIDTH) == 0 ?
"0.0" : link_speed_string(sta & PCIEM_LINK_STA_SPEED),
link_speed_string(cap & PCIEM_LINK_CAP_MAX_SPEED));
}
if ((cap & PCIEM_LINK_CAP_ASPM) != 0) {
ctl = read_config(fd, &p->pc_sel, ptr + PCIER_LINK_CTL, 2);
printf(" ASPM %s(%s)", aspm_string(ctl & PCIEM_LINK_CTL_ASPMC),
aspm_string((cap & PCIEM_LINK_CAP_ASPM) >> 10));
}
}