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Code Issues Releases Activity

pciconf(8): Decode ACS extended capability.

Browse Source 
MFC after:	1 week
Sponsored by:	Chelsio Communications
Reviewed by:	kib@
Differential Revision:	https://reviews.freebsd.org/D37271
This commit is contained in:
Navdeep Parhar 2022-11-04 12:30:09 -07:00
parent b2700160cc
commit 118cfb829f
1 changed files with 61 additions and 0 deletions
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61
usr.sbin/pciconf/cap.c
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@ -1016,6 +1016,64 @@ ecap_sriov(int fd, struct pci_conf *p, uint16_t ptr, uint8_t ver)
print_bar(fd, p, "iov bar ", ptr + PCIR_SRIOV_BAR(i));
}
static const char *
check_avail_and_state(u_int cap, u_int capbit, u_int ctl, u_int ctlbit)
{
if (cap & capbit)
return (ctl & ctlbit ? "enabled" : "disabled");
else
return "unavailable";
}
static void
ecap_acs(int fd, struct pci_conf *p, uint16_t ptr, uint8_t ver)
{
uint16_t acs_cap, acs_ctl;
static const char *const acc[] = { "access enabled", "blocking enabled",
"redirect enabled", "reserved" };
printf("ACS %d ", ver);
if (ver != 1) {
printf("\n");
return;
}
#define CHECK_AVAIL_STATE(bit) \
check_avail_and_state(acs_cap, bit, acs_ctl, bit##_ENABLE)
acs_cap = read_config(fd, &p->pc_sel, ptr + PCIR_ACS_CAP, 2);
acs_ctl = read_config(fd, &p->pc_sel, ptr + PCIR_ACS_CTL, 2);
printf("Source Validation %s, Translation Blocking %s\n",
CHECK_AVAIL_STATE(PCIM_ACS_SOURCE_VALIDATION),
CHECK_AVAIL_STATE(PCIM_ACS_TRANSLATION_BLOCKING));
printf(" ");
printf("P2P Req Redirect %s, P2P Cmpl Redirect %s\n",
CHECK_AVAIL_STATE(PCIM_ACS_P2P_REQ_REDIRECT),
CHECK_AVAIL_STATE(PCIM_ACS_P2P_CMP_REDIRECT));
printf(" ");
printf("P2P Upstream Forwarding %s, P2P Egress Control %s\n",
CHECK_AVAIL_STATE(PCIM_ACS_P2P_UPSTREAM_FORWARDING),
CHECK_AVAIL_STATE(PCIM_ACS_P2P_EGRESS_CTL));
printf(" ");
printf("P2P Direct Translated %s, Enhanced Capability %s\n",
CHECK_AVAIL_STATE(PCIM_ACS_P2P_DIRECT_TRANSLATED),
acs_ctl & PCIM_ACS_ENHANCED_CAP ? "available" : "unavailable");
#undef CHECK_AVAIL_STATE
if (acs_cap & PCIM_ACS_ENHANCED_CAP) {
printf(" ");
printf("I/O Req Blocking %s, Unclaimed Req Redirect Control %s\n",
check_enabled(acs_ctl & PCIM_ACS_IO_REQ_BLOCKING_ENABLE),
check_enabled(acs_ctl & PCIM_ACS_UNCLAIMED_REQ_REDIRECT_CTL));
printf(" ");
printf("DSP BAR %s, USP BAR %s\n",
acc[(acs_cap & PCIM_ACS_DSP_MEM_TGT_ACC_CTL) >> 8],
acc[(acs_cap & PCIM_ACS_USP_MEM_TGT_ACC_CTL) >> 10]);
}
}
static struct {
uint16_t id;
const char *name;
@ -1099,6 +1157,9 @@ list_ecaps(int fd, struct pci_conf *p)
case PCIZ_SRIOV:
ecap_sriov(fd, p, ptr, PCI_EXTCAP_VER(ecap));
break;
case PCIZ_ACS:
ecap_acs(fd, p, ptr, PCI_EXTCAP_VER(ecap));
break;
default:
name = "unknown";
for (i = 0; ecap_names[i].name != NULL; i++)