[src/trunk]: src/sys/dev/pci Root Complex Event Collector Bus Number Associat...

[msaitoh <msaitoh%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/e68223ad4b75
branches:  trunk
changeset: 433676:e68223ad4b75
user:      msaitoh <msaitoh%NetBSD.org@localhost>
date:      Thu Sep 27 07:09:29 2018 +0000

description:
Root Complex Event Collector Bus Number Association ECN.
- If capability version is 2 (or greater), decode RCEC Associated Bus Numbers
  register.

diffstat:

 sys/dev/pci/pci_subr.c |  16 ++++++++++++++--
 sys/dev/pci/pcireg.h   |   7 +++++--
 2 files changed, 19 insertions(+), 4 deletions(-)

diffs (58 lines):

diff -r bf96ec563388 -r e68223ad4b75 sys/dev/pci/pci_subr.c
--- a/sys/dev/pci/pci_subr.c    Thu Sep 27 05:40:27 2018 +0000
+++ b/sys/dev/pci/pci_subr.c    Thu Sep 27 07:09:29 2018 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: pci_subr.c,v 1.203 2018/09/12 07:42:22 msaitoh Exp $   */
+/*     $NetBSD: pci_subr.c,v 1.204 2018/09/27 07:09:29 msaitoh Exp $   */
 
 /*
  * Copyright (c) 1997 Zubin D. Dittia.  All rights reserved.
@@ -40,7 +40,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: pci_subr.c,v 1.203 2018/09/12 07:42:22 msaitoh Exp $");
+__KERNEL_RCSID(0, "$NetBSD: pci_subr.c,v 1.204 2018/09/27 07:09:29 msaitoh Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_pci.h"
@@ -3061,6 +3061,18 @@
        reg = regs[o2i(extcapoff + PCI_RCEC_ASSOC_ASSOCBITMAP)];
        printf("    Association Bitmap for Root Complex Integrated Devices:"
            " 0x%08x\n", reg);
+
+       if (PCI_EXTCAPLIST_VERSION(regs[o2i(extcapoff)]) >= 2) {
+               reg = regs[o2i(extcapoff + PCI_RCEC_ASSOC_ASSOCBUSNUM)];
+               printf("    RCEC Associated Bus Numbers register: 0x%08x\n",
+                   reg);
+               printf("      RCEC Next Bus: %u\n",
+                   (unsigned int)__SHIFTOUT(reg,
+                       PCI_RCEC_ASSOCBUSNUM_RCECNEXT));
+               printf("      RCEC Last Bus: %u\n",
+                   (unsigned int)__SHIFTOUT(reg,
+                       PCI_RCEC_ASSOCBUSNUM_RCECLAST));
+       }
 }
 
 /* XXX pci_conf_print_mfvc_cap */
diff -r bf96ec563388 -r e68223ad4b75 sys/dev/pci/pcireg.h
--- a/sys/dev/pci/pcireg.h      Thu Sep 27 05:40:27 2018 +0000
+++ b/sys/dev/pci/pcireg.h      Thu Sep 27 07:09:29 2018 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: pcireg.h,v 1.140 2018/09/12 07:42:21 msaitoh Exp $     */
+/*     $NetBSD: pcireg.h,v 1.141 2018/09/27 07:09:29 msaitoh Exp $     */
 
 /*
  * Copyright (c) 1995, 1996, 1999, 2000
@@ -1699,7 +1699,10 @@
  * Extended capability ID: 0x0007
  * Root Complex Event Collector Association
  */
-#define        PCI_RCEC_ASSOC_ASSOCBITMAP 0x04
+#define        PCI_RCEC_ASSOC_ASSOCBITMAP 0x04 /* Association Bitmap */
+#define        PCI_RCEC_ASSOC_ASSOCBUSNUM 0x08 /* Associcated Bus Number */
+#define        PCI_RCEC_ASSOCBUSNUM_RCECNEXT __BITS(15, 8)     /* RCEC Next Bus */
+#define        PCI_RCEC_ASSOCBUSNUM_RCECLAST __BITS(23, 16)    /* RCEC Last Bus */
 
 /*
  * Extended capability ID: 0x0008