From: Zhao, Yu <yu.zhao@intel.com>
Date: Thu, 3 Jul 2008 09:39:41 +0000 (+0800)
Subject: Alternative Routing-ID Interpretation capability support
X-Git-Tag: v3.0.1~9
X-Git-Url: http://mj.ucw.cz/gitweb/?a=commitdiff_plain;h=38190363b8577e656e92d1360c08faaf776b575c;p=pciutils.git

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 d2ad400..209e60f 100644
--- 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 ce6d54a..3f29474 100644
--- 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;