cxl: Add placeholder for undecoded DVSECs

[pciutils.git] / ls-ecaps.c

diff --git a/ls-ecaps.c b/ls-ecaps.c
index 27014ba95baf1b9ef13b8a47d1ea6ff60d09fcfd..d8376dab199310cf442c4faf7e88e5d3a49aa897 100644 (file)
--- a/ls-ecaps.c
+++ b/ls-ecaps.c
@@ -778,24 +778,112 @@ dvsec_cxl_device(struct device *d, int where, int rev)
   cxl_range(range_base, range_size, 2);
 }
 
+static void
+dvsec_cxl_port(struct device *d, int where)
+{
+  u16 w, m1, m2;
+  u8 b1, b2;
+
+  w = get_conf_word(d, where + PCI_CXL_PORT_EXT_STATUS);
+  printf("\t\tCXLPortSta:\tPMComplete%c\n", FLAG(w, PCI_CXL_PORT_EXT_STATUS));
+
+  w = get_conf_word(d, where + PCI_CXL_PORT_CTRL);
+  printf("\t\tCXLPortCtl:\tUnmaskSBR%c UnmaskLinkDisable%c AltMem%c AltBME%c ViralEnable%c\n",
+    FLAG(w, PCI_CXL_PORT_UNMASK_SBR), FLAG(w, PCI_CXL_PORT_UNMASK_LINK),
+    FLAG(w, PCI_CXL_PORT_ALT_MEMORY), FLAG(w, PCI_CXL_PORT_ALT_BME),
+    FLAG(w, PCI_CXL_PORT_VIRAL_EN));
+
+  b1 = get_conf_byte(d, where + PCI_CXL_PORT_ALT_BUS_BASE);
+  b2 = get_conf_byte(d, where + PCI_CXL_PORT_ALT_BUS_LIMIT);
+  printf("\t\tAlternateBus:\t%02x-%02x\n", b1, b2);
+  m1 = get_conf_word(d, where + PCI_CXL_PORT_ALT_MEM_BASE);
+  m2 = get_conf_word(d, where + PCI_CXL_PORT_ALT_MEM_LIMIT);
+  printf("\t\tAlternateBus:\t%04x-%04x\n", m1, m2);
+}
+
+static const char *id[] = {
+  "empty",
+  "component registers",
+  "BAR virtualization",
+  "CXL device registers"};
+
+static inline void
+dvsec_decode_block(uint32_t lo, uint32_t hi, char which)
+{
+  u64 base_hi = hi, base_lo;
+  u8 bir, block_id;
+
+  bir = BITS(lo, 0, 3);
+  block_id = BITS(lo, 8, 8);
+  base_lo = BITS(lo, 16, 16);
+
+  if (!block_id)
+    return;
+
+  printf("\t\tBlock%c\tBIR: bar%d\tID: %s\n", which, bir, id[block_id]);
+  printf("\t\t\tRegisterOffset: %016" PCI_U64_FMT_X "\n", (base_hi << 32ULL) | base_lo << 16);
+}
+
+static void
+dvsec_cxl_register_locator(struct device *d, int where, int len)
+{
+  int i, j;
+
+  for (i = 0xc, j = 1; i < len; i += 8, j++) {
+    dvsec_decode_block(get_conf_long(d, where + i), get_conf_long(d, where + i + 4), j + 0x31);
+  }
+}
+
 static void
 cap_dvsec_cxl(struct device *d, int id, int where)
 {
+  u16 len;
   u8 rev;
 
   printf(": CXL\n");
   if (verbose < 2)
     return;
 
-  if (id != 0)
-    return;
-
   rev = BITS(get_conf_byte(d, where + 0x6), 0, 4);
 
-  if (!config_fetch(d, where, PCI_CXL_DEV_LEN))
-    return;
+  switch (id) {
+    case 0:
+      if (!config_fetch(d, where, PCI_CXL_DEV_LEN))
+        return;
+
+      dvsec_cxl_device(d, where, rev);
+      break;
+    case 3:
+      if (!config_fetch(d, where, PCI_CXL_PORT_EXT_LEN))
+        return;
 
-  dvsec_cxl_device(d, where, rev);
+      dvsec_cxl_port(d, where);
+      break;
+    case 8:
+      len = BITS(get_conf_word(d, where + 0x6), 4, 12);
+      if (!config_fetch(d, where, len))
+        return;
+
+      dvsec_cxl_register_locator(d, where, len);
+      break;
+    case 2:
+      printf("\t\tNon-CXL Function Map DVSEC\n");
+      break;
+    case 4:
+      printf("\t\tGPF DVSEC for Port\n");
+      break;
+    case 5:
+      printf("\t\tGPF DVSEC for Device\n");
+      break;
+    case 7:
+      printf("\t\tPCIe DVSEC Flex Bus Port\n");
+      break;
+    case 9:
+      printf("\t\tMLD DVSEC\n");
+      break;
+    default:
+      break;
+  }
 }
 
 static void