[src/trunk]: src/sys/dev/pci For Attention Indicator Control bit and Power In...

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

details:   https://anonhg.NetBSD.org/src/rev/a94e4a5a94bf
branches:  trunk
changeset: 824697:a94e4a5a94bf
user:      msaitoh <msaitoh%NetBSD.org@localhost>
date:      Thu Jun 15 05:42:27 2017 +0000

description:
For Attention Indicator Control bit and Power Indicator Control bit, it's
allowed to be a read only value 0 if corresponding capability register bit
is 0.

diffstat:

 sys/dev/pci/pci_subr.c |  73 ++++++++++++++++++++++++++++---------------------
 1 files changed, 42 insertions(+), 31 deletions(-)

diffs (103 lines):

diff -r 87cc19f8e2e5 -r a94e4a5a94bf sys/dev/pci/pci_subr.c
--- a/sys/dev/pci/pci_subr.c    Thu Jun 15 02:51:45 2017 +0000
+++ b/sys/dev/pci/pci_subr.c    Thu Jun 15 05:42:27 2017 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: pci_subr.c,v 1.186 2017/06/08 03:39:18 msaitoh Exp $   */
+/*     $NetBSD: pci_subr.c,v 1.187 2017/06/15 05:42:27 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 1.186 2017/06/08 03:39:18 msaitoh Exp $");
+__KERNEL_RCSID(0, "$NetBSD: pci_subr.c,v 1.187 2017/06/15 05:42:27 msaitoh Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_pci.h"
@@ -1907,8 +1907,10 @@
        }
 
        if (check_slot == true) {
+               pcireg_t slcap;
+               
                /* Slot Capability Register */
-               reg = regs[o2i(capoff + PCIE_SLCAP)];
+               slcap = reg = regs[o2i(capoff + PCIE_SLCAP)];
                printf("    Slot Capability Register: 0x%08x\n", reg);
                onoff("Attention Button Present", reg, PCIE_SLCAP_ABP);
                onoff("Power Controller Present", reg, PCIE_SLCAP_PCP);
@@ -1936,35 +1938,44 @@
                onoff("Command Completed Interrupt Enabled", reg,
                    PCIE_SLCSR_CCE);
                onoff("Hot-Plug Interrupt Enabled", reg, PCIE_SLCSR_HPE);
-               printf("      Attention Indicator Control: ");
-               switch ((reg & PCIE_SLCSR_AIC) >> 6) {
-               case 0x0:
-                       printf("reserved\n");
-                       break;
-               case PCIE_SLCSR_IND_ON:
-                       printf("on\n");
-                       break;
-               case PCIE_SLCSR_IND_BLINK:
-                       printf("blink\n");
-                       break;
-               case PCIE_SLCSR_IND_OFF:
-                       printf("off\n");
-                       break;
+               /*
+                * For Attention Indicator Control and Power Indicator Control,
+                * it's allowed to be a read only value 0 if corresponding
+                * capability register bit is 0.
+                */
+               if (slcap & PCIE_SLCAP_AIP) {
+                       printf("      Attention Indicator Control: ");
+                       switch ((reg & PCIE_SLCSR_AIC) >> 6) {
+                       case 0x0:
+                               printf("reserved\n");
+                               break;
+                       case PCIE_SLCSR_IND_ON:
+                               printf("on\n");
+                               break;
+                       case PCIE_SLCSR_IND_BLINK:
+                               printf("blink\n");
+                               break;
+                       case PCIE_SLCSR_IND_OFF:
+                               printf("off\n");
+                               break;
+                       }
                }
-               printf("      Power Indicator Control: ");
-               switch ((reg & PCIE_SLCSR_PIC) >> 8) {
-               case 0x0:
-                       printf("reserved\n");
-                       break;
-               case PCIE_SLCSR_IND_ON:
-                       printf("on\n");
-                       break;
-               case PCIE_SLCSR_IND_BLINK:
-                       printf("blink\n");
-                       break;
-               case PCIE_SLCSR_IND_OFF:
-                       printf("off\n");
-                       break;
+               if (slcap & PCIE_SLCAP_PIP) {
+                       printf("      Power Indicator Control: ");
+                       switch ((reg & PCIE_SLCSR_PIC) >> 8) {
+                       case 0x0:
+                               printf("reserved\n");
+                               break;
+                       case PCIE_SLCSR_IND_ON:
+                               printf("on\n");
+                               break;
+                       case PCIE_SLCSR_IND_BLINK:
+                               printf("blink\n");
+                               break;
+                       case PCIE_SLCSR_IND_OFF:
+                               printf("off\n");
+                               break;
+                       }
                }
                printf("      Power Controller Control: Power %s\n",
                    reg & PCIE_SLCSR_PCC ? "off" : "on");