[src/trunk]: src/sys/dev/pci - Fix the base power's value in the power budget...

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

details:   https://anonhg.NetBSD.org/src/rev/664db365c6ba
branches:  trunk
changeset: 351760:664db365c6ba
user:      msaitoh <msaitoh%NetBSD.org@localhost>
date:      Sun Feb 26 05:41:47 2017 +0000

description:
- Fix the base power's value in the power budget capability.
 - Fix typo (s/Maximun/Maximum/)

diffstat:

 sys/dev/pci/pci_subr.c |  73 +++++++++++++++++++++++--------------------------
 1 files changed, 34 insertions(+), 39 deletions(-)

diffs (121 lines):

diff -r 82872c0e305e -r 664db365c6ba sys/dev/pci/pci_subr.c
--- a/sys/dev/pci/pci_subr.c    Sat Feb 25 22:45:59 2017 +0000
+++ b/sys/dev/pci/pci_subr.c    Sun Feb 26 05:41:47 2017 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: pci_subr.c,v 1.159 2017/02/24 06:39:54 msaitoh Exp $   */
+/*     $NetBSD: pci_subr.c,v 1.160 2017/02/26 05:41:47 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 1.159 2017/02/24 06:39:54 msaitoh Exp $");
+__KERNEL_RCSID(0, "$NetBSD: pci_subr.c,v 1.160 2017/02/26 05:41:47 msaitoh Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_pci.h"
@@ -2578,42 +2578,38 @@
                    "  VC", varbsel, varbsize);
 }
 
-static const char *
-pci_conf_print_pwrbdgt_base_power(uint8_t reg)
+static void
+pci_conf_print_pwrbdgt_base_power(uint8_t base, int scale)
 {
-
-       switch (reg) {
+       int sdiv = 1;
+       const char *s;
+       int i;
+       
+       if (base <= 0xef) {
+               for (i = scale; i > 0; i--)
+                       sdiv *= 10;
+               printf("%hhu", base / sdiv);
+               if (scale != 0) {
+                       printf(".%hhu", base % sdiv);
+               }
+               printf ("W\n");
+               return;
+       }
+       switch (base) {
        case 0xf0:
-               return "239W < x <= 250W";
+               s = "239W < x <= 250W";
+               break;
        case 0xf1:
-               return "250W < x <= 275W";
+               s = "250W < x <= 275W";
+               break;
        case 0xf2:
-               return "275W < x <= 300W";
+               s = "275W < x <= 300W";
+               break;
        default:
+               s = "reserved for above 300W";
                break;
        }
-       if (reg >= 0xf3)
-               return "reserved for above 300W";
-
-       return "Unknown";
-}
-
-static const char *
-pci_conf_print_pwrbdgt_data_scale(uint8_t reg)
-{
-
-       switch (reg) {
-       case 0x00:
-               return "1.0x";
-       case 0x01:
-               return "0.1x";
-       case 0x02:
-               return "0.01x";
-       case 0x03:
-               return "0.001x";
-       default:
-               return "wrong value!";
-       }
+       printf("%s\n", s);
 }
 
 static const char *
@@ -2634,7 +2630,7 @@
        case 0x05:
                return "Maximum (Emergency Power Reduction)";
        case 0x07:
-               return "Maximun";
+               return "Maximum";
        default:
                return "Unknown";
        }
@@ -2662,19 +2658,18 @@
 pci_conf_print_pwrbdgt_cap(const pcireg_t *regs, int capoff, int extcapoff)
 {
        pcireg_t reg;
-
-       printf("\n  Power Budget Register\n");
+       unsigned int scale;
+
+       printf("\n  Power Budgeting\n");
 
        reg = regs[o2i(extcapoff + PCI_PWRBDGT_DSEL)];
        printf("    Data Select register: 0x%08x\n", reg);
 
        reg = regs[o2i(extcapoff + PCI_PWRBDGT_DATA)];
        printf("    Data register: 0x%08x\n", reg);
-       printf("      Base Power: %s\n",
-           pci_conf_print_pwrbdgt_base_power((uint8_t)reg));
-       printf("      Data Scale: %s\n",
-           pci_conf_print_pwrbdgt_data_scale(
-                   (uint8_t)(__SHIFTOUT(reg, PCI_PWRBDGT_DATA_SCALE))));
+       scale = __SHIFTOUT(reg, PCI_PWRBDGT_DATA_SCALE);
+       printf("      Base Power: ");
+       pci_conf_print_pwrbdgt_base_power((uint8_t)reg, scale);
        printf("      PM Sub State: 0x%hhx\n",
            (uint8_t)__SHIFTOUT(reg, PCI_PWRBDGT_PM_SUBSTAT));
        printf("      PM State: D%u\n",