X-Git-Url: http://mj.ucw.cz/gitweb/?a=blobdiff_plain;f=lib%2Fi386-ports.c;h=1e2c4028e08dca240bee387c9b0d0e443cf76f5f;hb=6182921907ef3cc31be3394eb468b24bcd3955a8;hp=072fac5fa602ffee8c98241c4f290a2caf0a1dfa;hpb=52c815195259cc9d388fac44ead8191de7d24c76;p=pciutils.git

diff --git a/lib/i386-ports.c b/lib/i386-ports.c
index 072fac5..1e2c402 100644
--- a/lib/i386-ports.c
+++ b/lib/i386-ports.c
@@ -3,14 +3,16 @@
  *
  *	Copyright (c) 1997--2006 Martin Mares <mj@ucw.cz>
  *
- *	Can be freely distributed and used under the terms of the GNU GPL.
+ *	Can be freely distributed and used under the terms of the GNU GPL v2+.
+ *
+ *	SPDX-License-Identifier: GPL-2.0-or-later
  */
 
 #define _GNU_SOURCE
 
 #include "internal.h"
 
-#include <unistd.h>
+#include <string.h>
 
 #if defined(PCI_OS_LINUX)
 #include "i386-io-linux.h"
@@ -22,6 +24,12 @@
 #include "i386-io-windows.h"
 #elif defined(PCI_OS_CYGWIN)
 #include "i386-io-cygwin.h"
+#elif defined(PCI_OS_HAIKU)
+#include "i386-io-haiku.h"
+#elif defined(PCI_OS_BEOS)
+#include "i386-io-beos.h"
+#elif defined(PCI_OS_DJGPP)
+#include "i386-io-djgpp.h"
 #else
 #error Do not know how to access I/O ports on this OS.
 #endif
@@ -44,10 +52,13 @@ conf12_init(struct pci_access *a)
 }
 
 static void
-conf12_cleanup(struct pci_access *a UNUSED)
+conf12_cleanup(struct pci_access *a)
 {
   if (conf12_io_enabled > 0)
-    conf12_io_enabled = intel_cleanup_io(a);
+    {
+      intel_cleanup_io(a);
+      conf12_io_enabled = -1;
+    }
 }
 
 /*
@@ -66,6 +77,7 @@ intel_sanity_check(struct pci_access *a, struct pci_methods *m)
 {
   struct pci_dev d;
 
+  memset(&d, 0, sizeof(d));
   a->debug("...sanity check");
   d.bus = 0;
   d.func = 0;
@@ -102,12 +114,16 @@ conf1_detect(struct pci_access *a)
       a->debug("...no I/O permission");
       return 0;
     }
+
+  intel_io_lock();
   outb (0x01, 0xCFB);
   tmp = inl (0xCF8);
   outl (0x80000000, 0xCF8);
   if (inl (0xCF8) == 0x80000000)
     res = 1;
   outl (tmp, 0xCF8);
+  intel_io_unlock();
+
   if (res)
     res = intel_sanity_check(a, &pm_intel_conf1);
   return res;
@@ -117,10 +133,15 @@ static int
 conf1_read(struct pci_dev *d, int pos, byte *buf, int len)
 {
   int addr = 0xcfc + (pos&3);
+  int res = 1;
 
-  if (pos >= 256)
+  if (d->domain || pos >= 256)
     return 0;
 
+  if (len != 1 && len != 2 && len != 4)
+    return pci_generic_block_read(d, pos, buf, len);
+
+  intel_io_lock();
   outl(0x80000000 | ((d->bus & 0xff) << 16) | (PCI_DEVFN(d->dev, d->func) << 8) | (pos&~3), 0xcf8);
 
   switch (len)
@@ -134,20 +155,25 @@ conf1_read(struct pci_dev *d, int pos, byte *buf, int len)
     case 4:
       ((u32 *) buf)[0] = cpu_to_le32(inl(addr));
       break;
-    default:
-      return pci_generic_block_read(d, pos, buf, len);
     }
-  return 1;
+
+  intel_io_unlock();
+  return res;
 }
 
 static int
 conf1_write(struct pci_dev *d, int pos, byte *buf, int len)
 {
   int addr = 0xcfc + (pos&3);
+  int res = 1;
 
-  if (pos >= 256)
+  if (d->domain || pos >= 256)
     return 0;
 
+  if (len != 1 && len != 2 && len != 4)
+    return pci_generic_block_write(d, pos, buf, len);
+
+  intel_io_lock();
   outl(0x80000000 | ((d->bus & 0xff) << 16) | (PCI_DEVFN(d->dev, d->func) << 8) | (pos&~3), 0xcf8);
 
   switch (len)
@@ -161,10 +187,9 @@ conf1_write(struct pci_dev *d, int pos, byte *buf, int len)
     case 4:
       outl(le32_to_cpu(((u32 *) buf)[0]), addr);
       break;
-    default:
-      return pci_generic_block_write(d, pos, buf, len);
     }
-  return 1;
+  intel_io_unlock();
+  return res;
 }
 
 /*
@@ -174,6 +199,8 @@ conf1_write(struct pci_dev *d, int pos, byte *buf, int len)
 static int
 conf2_detect(struct pci_access *a)
 {
+  int res = 0;
+
   if (!conf12_setup_io(a))
     {
       a->debug("...no I/O permission");
@@ -182,26 +209,33 @@ conf2_detect(struct pci_access *a)
 
   /* This is ugly and tends to produce false positives. Beware. */
 
+  intel_io_lock();
   outb(0x00, 0xCFB);
   outb(0x00, 0xCF8);
   outb(0x00, 0xCFA);
   if (inb(0xCF8) == 0x00 && inb(0xCFA) == 0x00)
-    return intel_sanity_check(a, &pm_intel_conf2);
-  else
-    return 0;
+    res = intel_sanity_check(a, &pm_intel_conf2);
+  intel_io_unlock();
+  return res;
 }
 
 static int
 conf2_read(struct pci_dev *d, int pos, byte *buf, int len)
 {
+  int res = 1;
   int addr = 0xc000 | (d->dev << 8) | pos;
 
-  if (pos >= 256)
+  if (d->domain || pos >= 256)
     return 0;
 
   if (d->dev >= 16)
     /* conf2 supports only 16 devices per bus */
     return 0;
+
+  if (len != 1 && len != 2 && len != 4)
+    return pci_generic_block_read(d, pos, buf, len);
+
+  intel_io_lock();
   outb((d->func << 1) | 0xf0, 0xcf8);
   outb(d->bus, 0xcfa);
   switch (len)
@@ -215,24 +249,29 @@ conf2_read(struct pci_dev *d, int pos, byte *buf, int len)
     case 4:
       ((u32 *) buf)[0] = cpu_to_le32(inl(addr));
       break;
-    default:
-      outb(0, 0xcf8);
-      return pci_generic_block_read(d, pos, buf, len);
     }
   outb(0, 0xcf8);
-  return 1;
+  intel_io_unlock();
+  return res;
 }
 
 static int
 conf2_write(struct pci_dev *d, int pos, byte *buf, int len)
 {
+  int res = 1;
   int addr = 0xc000 | (d->dev << 8) | pos;
 
-  if (pos >= 256)
+  if (d->domain || pos >= 256)
     return 0;
 
   if (d->dev >= 16)
-    d->access->error("conf2_write: only first 16 devices exist.");
+    /* conf2 supports only 16 devices per bus */
+    return 0;
+
+  if (len != 1 && len != 2 && len != 4)
+    return pci_generic_block_write(d, pos, buf, len);
+
+  intel_io_lock();
   outb((d->func << 1) | 0xf0, 0xcf8);
   outb(d->bus, 0xcfa);
   switch (len)
@@ -246,12 +285,11 @@ conf2_write(struct pci_dev *d, int pos, byte *buf, int len)
     case 4:
       outl(le32_to_cpu(* (u32 *) buf), addr);
       break;
-    default:
-      outb(0, 0xcf8);
-      return pci_generic_block_write(d, pos, buf, len);
     }
+
   outb(0, 0xcf8);
-  return 1;
+  intel_io_unlock();
+  return res;
 }
 
 struct pci_methods pm_intel_conf1 = {