lspci: Add support for CXL MLD DVSEC

[pciutils.git] / ls-ecaps.c

diff --git a/ls-ecaps.c b/ls-ecaps.c
index abfc30c3b0b1fc00c15b0ac65a326bd3aaf50ba2..b4e6a630ee05e2eb71f9b62986bd27ad9f2b1cbc 100644 (file)
--- a/ls-ecaps.c
+++ b/ls-ecaps.c
@@ -880,6 +880,75 @@ dvsec_cxl_gpf_device(struct device *d, int where)
   printf("\t\tGPF Phase 2 Power: %umW\n", (unsigned int)l);
 }
 
+static void
+dvsec_cxl_gpf_port(struct device *d, int where)
+{
+  u16 w, timeout;
+  u8 time_base, time_scale;
+
+  w = get_conf_word(d, where + PCI_CXL_GPF_PORT_PHASE1_CTRL);
+  time_base = BITS(w, 0, 4);
+  time_scale = BITS(w, 8, 4);
+
+  switch (time_scale)
+    {
+      case PCI_CXL_GPF_PORT_100US:
+      case PCI_CXL_GPF_PORT_100MS:
+        timeout = time_base * 100;
+        break;
+      case PCI_CXL_GPF_PORT_10US:
+      case PCI_CXL_GPF_PORT_10MS:
+      case PCI_CXL_GPF_PORT_10S:
+        timeout = time_base * 10;
+        break;
+      case PCI_CXL_GPF_PORT_1US:
+      case PCI_CXL_GPF_PORT_1MS:
+      case PCI_CXL_GPF_PORT_1S:
+        timeout = time_base;
+        break;
+      default:
+        /* Reserved */
+        printf("\t\tReserved time scale encoding %x\n", time_scale);
+        timeout = time_base;
+    }
+
+  printf("\t\tGPF Phase 1 Timeout: %d%s\n", timeout,
+      (time_scale < PCI_CXL_GPF_PORT_1MS) ? "us":
+      (time_scale < PCI_CXL_GPF_PORT_1S) ? "ms" :
+      (time_scale == PCI_CXL_GPF_PORT_1S) ? "s" : "<?>");
+
+  w = get_conf_word(d, where + PCI_CXL_GPF_PORT_PHASE2_CTRL);
+  time_base = BITS(w, 0, 4);
+  time_scale = BITS(w, 8, 4);
+
+  switch (time_scale)
+    {
+      case PCI_CXL_GPF_PORT_100US:
+      case PCI_CXL_GPF_PORT_100MS:
+        timeout = time_base * 100;
+        break;
+      case PCI_CXL_GPF_PORT_10US:
+      case PCI_CXL_GPF_PORT_10MS:
+      case PCI_CXL_GPF_PORT_10S:
+        timeout = time_base * 10;
+        break;
+      case PCI_CXL_GPF_PORT_1US:
+      case PCI_CXL_GPF_PORT_1MS:
+      case PCI_CXL_GPF_PORT_1S:
+        timeout = time_base;
+        break;
+      default:
+        /* Reserved */
+        printf("\t\tReserved time scale encoding %x\n", time_scale);
+        timeout = time_base;
+    }
+
+  printf("\t\tGPF Phase 2 Timeout: %d%s\n", timeout,
+      (time_scale < PCI_CXL_GPF_PORT_1MS) ? "us":
+      (time_scale < PCI_CXL_GPF_PORT_1S) ? "ms" :
+      (time_scale == PCI_CXL_GPF_PORT_1S) ? "s" : "<?>");
+}
+
 static void
 dvsec_cxl_flex_bus(struct device *d, int where, int rev)
 {
@@ -945,6 +1014,18 @@ dvsec_cxl_flex_bus(struct device *d, int where, int rev)
     }
 }
 
+static void
+dvsec_cxl_mld(struct device *d, int where)
+{
+  u16 w;
+
+  w = get_conf_word(d, where + PCI_CXL_MLD_NUM_LD);
+
+  /* Encodings greater than 16 are reserved */
+  if (w && w <= PCI_CXL_MLD_MAX_LD)
+    printf("\t\tNumLogDevs: %d\n", w);
+}
+
 static void
 cap_dvsec_cxl(struct device *d, int id, int rev, int where, int len)
 {
@@ -967,7 +1048,7 @@ cap_dvsec_cxl(struct device *d, int id, int rev, int where, int len)
       dvsec_cxl_port(d, where, len);
       break;
     case 4:
-      printf("\t\tGPF DVSEC for Port\n");
+      dvsec_cxl_gpf_port(d, where);
       break;
     case 5:
       dvsec_cxl_gpf_device(d, where);
@@ -979,7 +1060,7 @@ cap_dvsec_cxl(struct device *d, int id, int rev, int where, int len)
       dvsec_cxl_register_locator(d, where, len);
       break;
     case 9:
-      printf("\t\tMLD DVSEC\n");
+      dvsec_cxl_mld(d, where);
       break;
     default:
       printf("\t\tUnknown ID %04x\n", id);