lspci: support PCI Advanced Features capability

The capability is defined by
http://www.pcisig.com/specifications/conventional/pci_30/ECN_Conventional_Adv_Caps_27Jul06.pdf

Signed-off-by: Yu Zhao <yu.zhao@intel.com>

diff --git a/lib/header.h b/lib/header.h
index ec34f44d710ab628e3cb3390bbbbf238187e7e6f..8911c170bf569143171f72f1c84fce7c869fa01c 100644 (file)
--- a/lib/header.h
+++ b/lib/header.h
@@ -871,6 +871,15 @@
 #define PCI_SSVID_VENDOR       4
 #define PCI_SSVID_DEVICE       6
 
+/* PCI Advanced Features */
+#define PCI_AF_CAP             3
+#define  PCI_AF_CAP_TP         0x01
+#define  PCI_AF_CAP_FLR                0x02
+#define PCI_AF_CTRL            4
+#define  PCI_AF_CTRL_FLR       0x01
+#define PCI_AF_STATUS          5
+#define  PCI_AF_STATUS_TP      0x01
+
 /* Advanced Error Reporting */
 #define PCI_ERR_UNCOR_STATUS   4       /* Uncorrectable Error Status */
 #define  PCI_ERR_UNC_TRAIN     0x00000001      /* Undefined in PCIe rev1.1 & 2.0 spec */

diff --git a/ls-caps.c b/ls-caps.c
index 1a35d61bc4ff8a4eea72e96fb29204766e17571d..634dadce4e84834c80cd6cecbb9fee4637439108 100644 (file)
--- a/ls-caps.c
+++ b/ls-caps.c
@@ -1146,6 +1146,24 @@ cap_debug_port(int cap)
   printf("Debug port: BAR=%d offset=%04x\n", bar, pos);
 }
 
+static void
+cap_af(struct device *d, int where)
+{
+  u8 reg;
+
+  printf("PCI Advanced Features\n");
+  if (verbose < 2 || !config_fetch(d, where + PCI_AF_CAP, 3))
+    return;
+
+  reg = get_conf_byte(d, where + PCI_AF_CAP);
+  printf("\t\tAFCap: TP%c FLR%c\n", FLAG(reg, PCI_AF_CAP_TP),
+        FLAG(reg, PCI_AF_CAP_FLR));
+  reg = get_conf_byte(d, where + PCI_AF_CTRL);
+  printf("\t\tAFCtrl: FLR%c\n", FLAG(reg, PCI_AF_CTRL_FLR));
+  reg = get_conf_byte(d, where + PCI_AF_STATUS);
+  printf("\t\tAFStatus: TP%c\n", FLAG(reg, PCI_AF_STATUS_TP));
+}
+
 void
 show_caps(struct device *d)
 {
@@ -1238,7 +1256,7 @@ show_caps(struct device *d)
              printf("SATA HBA <?>\n");
              break;
            case PCI_CAP_ID_AF:
-             printf("PCIe advanced features <?>\n");
+             cap_af(d, where);
              break;
            default:
              printf("#%02x [%04x]\n", id, cap);