Print information about (legacy) Multiple Message MSIs.

ok kevlo@, dlg@

diff --git a/usr.sbin/pcidump/pcidump.c b/usr.sbin/pcidump/pcidump.c
index e5df1ef..c7dc589 100644 (file)
--- a/usr.sbin/pcidump/pcidump.c
+++ b/usr.sbin/pcidump/pcidump.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: pcidump.c,v 1.69 2023/04/16 17:26:14 kettenis Exp $   */
+/*     $OpenBSD: pcidump.c,v 1.70 2024/02/01 18:26:45 kettenis Exp $   */
 
 /*
  * Copyright (c) 2006, 2007 David Gwynne <loki@animata.net>
@@ -606,7 +606,10 @@ dump_msi(int bus, int dev, int func, u_int8_t ptr)
        if (pci_read(bus, dev, func, ptr, &reg) != 0)
                return;
 
-       printf("\t\tEnabled: %s\n", reg & PCI_MSI_MC_MSIE ? "yes" : "no");
+       printf("\t\tEnabled: %s; %d vectors (%d enabled)\n",
+           reg & PCI_MSI_MC_MSIE ? "yes" : "no",
+           (1 << ((reg & PCI_MSI_MC_MMC_MASK) >> PCI_MSI_MC_MMC_SHIFT)),
+           (1 << ((reg & PCI_MSI_MC_MME_MASK) >> PCI_MSI_MC_MME_SHIFT)));
 }
 
 void