Signed-off-by: Yu Zhao <yu.zhao@xxxxxxxxx>
lib/header.h | 11 +++++++++++
lspci.c | 22 ++++++++++++++++++++++
2 files changed, 33 insertions(+)
diff --git a/lib/header.h b/lib/header.h
index d2ad400..209e60f 100644
--- a/lib/header.h
+++ b/lib/header.h
@@ -219,6 +219,7 @@ #define PCI_EXT_CAP_ID_MFVC 0x08 /* Mult
#define PCI_EXT_CAP_ID_RBCB 0x0a /* Root Bridge Control Block */
#define PCI_EXT_CAP_ID_VNDR 0x0b /* Vendor specific */
#define PCI_EXT_CAP_ID_ACS 0x0d /* Access Controls */
+#define PCI_EXT_CAP_ID_ARI 0x0e /* Alternative Routing-ID Interpretation */
/* Power Management Registers */
@@ -941,6 +942,16 @@ #define PCI_ACS_CTRL_EGRESS 0x0020 /* AC
#define PCI_ACS_CTRL_TRANS 0x0040 /* ACS Direct Translated P2P Enable */
#define PCI_ACS_EGRESS_CTRL 0x08 /* Egress Control Vector */
+/* Alternative Routing-ID Interpretation */
+#define PCI_ARI_CAP 0x04 /* ARI Capability Register */
+#define PCI_ARI_CAP_MFVC 0x0001 /* MFVC Function Groups Capability */
+#define PCI_ARI_CAP_ACS 0x0002 /* ACS Function Groups Capability */
+#define PCI_ARI_CAP_NFN(x) (((x) >> 8) & 0xff) /* Next Function Number */
+#define PCI_ARI_CTRL 0x06 /* ARI Control Register */
+#define PCI_ARI_CTRL_MFVC 0x0001 /* MFVC Function Groups Enable */
+#define PCI_ARI_CTRL_ACS 0x0002 /* ACS Function Groups Enable */
+#define PCI_ARI_CTRL_FG(x) (((x) >> 4) & 7) /* Function Group */
+
/*
* The PCI interface treats multi-function devices as independent
* devices. The slot/function address of each device is encoded
diff --git a/lspci.c b/lspci.c
index ce6d54a..3f29474 100644
--- a/lspci.c
+++ b/lspci.c
@@ -1559,6 +1559,25 @@ cap_acs(struct device *d, int where)
}
static void
+cap_ari(struct device *d, int where)
+{
+ u16 w;
+
+ printf("Alternative Routing-ID Interpretation (ARI)\n");
+ if (!config_fetch(d, where + PCI_ARI_CAP, 4))
+ return;
+
+ w = get_conf_word(d, where + PCI_ARI_CAP);
+ printf("\t\tARICap:\tMFVC%c ACS%c, Next Function: %d\n",
+ FLAG(w, PCI_ARI_CAP_MFVC), FLAG(w, PCI_ARI_CAP_ACS),
+ PCI_ARI_CAP_NFN(w));
+ w = get_conf_word(d, where + PCI_ARI_CTRL);
+ printf("\t\tARICtl:\tMFVC%c ACS%c, Function Group: %d\n",
+ FLAG(w, PCI_ARI_CTRL_MFVC), FLAG(w, PCI_ARI_CTRL_ACS),
+ PCI_ARI_CTRL_FG(w));
+}
+
+static void
show_ext_caps(struct device *d)
{
int where = 0x100;
@@ -1616,6 +1635,9 @@ show_ext_caps(struct device *d)
case PCI_EXT_CAP_ID_ACS:
cap_acs(d, where);
break;
+ case PCI_EXT_CAP_ID_ARI:
+ cap_ari(d, where);
+ break;
default:
printf("#%02x\n", id);
break;
--
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