[src/trunk]: src/sys/dev/pci - Don't print TPH requester's ST Table Size if t...

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

details:   https://anonhg.NetBSD.org/src/rev/72c19371e311
branches:  trunk
changeset: 836205:72c19371e311
user:      msaitoh <msaitoh%NetBSD.org@localhost>
date:      Wed Oct 03 06:46:09 2018 +0000

description:
- Don't print TPH requester's ST Table Size if the ST table location field
  is not PCI_TPH_REQ_STTBLLOC_TPHREQ because the size field is only applicaple
  for PCI_TPH_REQ_STTBLLOC_TPHREQ case.
- Add comment.

diffstat:

 sys/dev/pci/pci_subr.c |  12 +++++++-----
 sys/dev/pci/pcireg.h   |   6 +++---
 2 files changed, 10 insertions(+), 8 deletions(-)

diffs (60 lines):

diff -r 32c74d18ae8e -r 72c19371e311 sys/dev/pci/pci_subr.c
--- a/sys/dev/pci/pci_subr.c    Wed Oct 03 06:02:33 2018 +0000
+++ b/sys/dev/pci/pci_subr.c    Wed Oct 03 06:46:09 2018 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: pci_subr.c,v 1.204 2018/09/27 07:09:29 msaitoh Exp $   */
+/*     $NetBSD: pci_subr.c,v 1.205 2018/10/03 06:46:09 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 1.204 2018/09/27 07:09:29 msaitoh Exp $");
+__KERNEL_RCSID(0, "$NetBSD: pci_subr.c,v 1.205 2018/10/03 06:46:09 msaitoh Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_pci.h"
@@ -3538,7 +3538,7 @@
 pci_conf_print_tph_req_cap(const pcireg_t *regs, int extcapoff)
 {
        pcireg_t reg;
-       int size, i, j;
+       int size = 0, i, j;
        uint8_t sttbloc;
 
        printf("\n  TPH Requester Extended Capability\n");
@@ -3552,8 +3552,10 @@
        sttbloc = __SHIFTOUT(reg, PCI_TPH_REQ_CAP_STTBLLOC);
        printf("      ST Table Location: %s\n",
            pci_conf_print_tph_req_cap_sttabloc(sttbloc));
-       size = __SHIFTOUT(reg, PCI_TPH_REQ_CAP_STTBLSIZ) + 1;
-       printf("      ST Table Size: %d\n", size);
+       if (sttbloc == PCI_TPH_REQ_STTBLLOC_TPHREQ) {
+               size = __SHIFTOUT(reg, PCI_TPH_REQ_CAP_STTBLSIZ) + 1;
+               printf("      ST Table Size: %d\n", size);
+       }
 
        reg = regs[o2i(extcapoff + PCI_TPH_REQ_CTL)];
        printf("    TPH Requester Control register: 0x%08x\n", reg);
diff -r 32c74d18ae8e -r 72c19371e311 sys/dev/pci/pcireg.h
--- a/sys/dev/pci/pcireg.h      Wed Oct 03 06:02:33 2018 +0000
+++ b/sys/dev/pci/pcireg.h      Wed Oct 03 06:46:09 2018 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: pcireg.h,v 1.141 2018/09/27 07:09:29 msaitoh Exp $     */
+/*     $NetBSD: pcireg.h,v 1.142 2018/10/03 06:46:09 msaitoh Exp $     */
 
 /*
  * Copyright (c) 1995, 1996, 1999, 2000
@@ -1186,8 +1186,8 @@
        uint32_t pci_msix_vector_control;
 };
 #define        PCI_MSIX_VECTCTL_MASK   __BIT(0)
-#define        PCI_MSIX_VECTCTL_STLO   __BITS(23, 16)
-#define        PCI_MSIX_VECTCTL_STUP   __BITS(31, 24)
+#define        PCI_MSIX_VECTCTL_STLO   __BITS(23, 16)  /* ST lower */
+#define        PCI_MSIX_VECTCTL_STUP   __BITS(31, 24)  /* ST upper */
 
  /* Max number of MSI-X vectors. See PCI-SIG specification. */
 #define        PCI_MSIX_MAX_VECTORS    2048