From 553d12c87c04d1d53cc684c768ee7bab0eedd90a Mon Sep 17 00:00:00 2001
From: Martin Mares <mj@ucw.cz>
Date: Tue, 12 Feb 2008 09:37:25 +0100
Subject: [PATCH] Added options for setting of library parameters.

---
 common.c   | 25 +++++++++++++++++++++++++
 pciutils.h |  5 +++--
 2 files changed, 28 insertions(+), 2 deletions(-)

diff --git a/common.c b/common.c
index 7d52530..7e53157 100644
--- a/common.c
+++ b/common.c
@@ -44,6 +44,28 @@ xrealloc(void *ptr, unsigned int howmuch)
   return p;
 }
 
+static void
+set_pci_option(struct pci_access *pacc, char *arg)
+{
+  if (!strcmp(arg, "help"))
+    {
+      struct pci_param *p;
+      printf("Known PCI access parameters:\n\n");
+      for (p=NULL; p=pci_walk_params(pacc, p);)
+	printf("%-20s %s (%s)\n", p->param, p->help, p->value);
+      exit(0);
+    }
+  else
+    {
+      char *sep = strchr(arg, '=');
+      if (!sep)
+	die("Invalid PCI access parameter syntax: %s", arg);
+      *sep++ = 0;
+      if (pci_set_param(pacc, arg, sep) < 0)
+	die("Unrecognized PCI access parameter: %s", arg);
+    }
+}
+
 int
 parse_generic_option(int i, struct pci_access *pacc, char *optarg)
 {
@@ -74,6 +96,9 @@ parse_generic_option(int i, struct pci_access *pacc, char *optarg)
     case 'G':
       pacc->debugging++;
       break;
+    case 'O':
+      set_pci_option(pacc, optarg);
+      break;
     default:
       return 0;
     }
diff --git a/pciutils.h b/pciutils.h
index d6669af..02071ac 100644
--- a/pciutils.h
+++ b/pciutils.h
@@ -44,6 +44,7 @@ int parse_generic_option(int i, struct pci_access *pacc, char *optarg);
 #define GENHELP_DUMP
 #endif
 
-#define GENERIC_OPTIONS "G" GENOPT_PROC GENOPT_INTEL GENOPT_DUMP
+#define GENERIC_OPTIONS "GO:" GENOPT_PROC GENOPT_INTEL GENOPT_DUMP
 #define GENERIC_HELP GENHELP_PROC GENHELP_INTEL GENHELP_DUMP \
-	"-G\t\tEnable PCI access debugging\n"
+	"-G\t\tEnable PCI access debugging\n" \
+	"-O <par>=<val>\tSet PCI access parameter (see `-O help' for the list)\n"
-- 
2.39.2