Alternative Routing-ID Interpretation capability support

Signed-off-by: Yu Zhao <yu.zhao@intel.com>
lib/header.h |   11 +++++++++++
lspci.c      |   22 ++++++++++++++++++++++
2 files changed, 33 insertions(+)

diff --git a/lib/header.h b/lib/header.h
index d2ad400039bb50efe3c21314c0030e0bb5478b90..209e60fb4d360a03a39af6372d5309c9db39d97d 100644 (file)
--- a/lib/header.h
+++ b/lib/header.h
@@ -219,6 +219,7 @@
 #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_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 ce6d54aa2f20dcc109df59433481e55fd318754e..3f29474d96fda759ee0f7a545dffaa4f47585f89 100644 (file)
--- a/lspci.c
+++ b/lspci.c
@@ -1558,6 +1558,25 @@ cap_acs(struct device *d, int where)
        FLAG(w, PCI_ACS_CTRL_TRANS));
 }
 
+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)
 {
@@ -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;