cxl: Rework caps to new function

This will help upcoming caps

Signed-off-by: Ben Widawsky <ben.widawsky@intel.com>
Co-authored-by: Jaxon Haws <jaxon.haws@amd.com>
Signed-off-by: Jaxon Haws <jaxon.haws@amd.com>

1 files changed, 23 insertions, 9 deletions

diff --git a/ls-ecaps.c b/ls-ecaps.c
index b080a19..432d95a 100644
--- a/ls-ecaps.c
+++ b/ls-ecaps.c
@@ -690,18 +690,12 @@ cap_rcec(struct device *d, int where)
 }
 
 static void
-cap_dvsec_cxl(struct device *d, int id, int where)
+dvsec_cxl_device(struct device *d, int where, int rev)
 {
   u16 w;
 
-  printf(": CXL\n");
-  if (verbose < 2)
-    return;
-
-  if (id != 0)
-    return;
-
-  if (!config_fetch(d, where + PCI_CXL_CAP, PCI_CXL_DEV_LEN - PCI_CXL_CAP))
+  /* Legacy 1.1 revs aren't handled */
+  if (rev < 1)
     return;
 
   w = get_conf_word(d, where + PCI_CXL_CAP);
@@ -720,6 +714,26 @@ cap_dvsec_cxl(struct device *d, int id, int where)
 }
 
 static void
+cap_dvsec_cxl(struct device *d, int id, int where)
+{
+  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;
+
+  dvsec_cxl_device(d, where, rev);
+}
+
+static void
 cap_dvsec(struct device *d, int where)
 {
   printf("Designated Vendor-Specific: ");