This commit was generated by cvs2svn to compensate for changes in r1815,

[bootcd.git] / syslinux / com32 / lib / pci / cfgtype.c

diff --git a/syslinux/com32/lib/pci/cfgtype.c b/syslinux/com32/lib/pci/cfgtype.c
new file mode 100644 (file)
index 0000000..5fa72be
--- /dev/null
+++ b/syslinux/com32/lib/pci/cfgtype.c
@@ -0,0 +1,23 @@
+#include "pci/pci.h"
+
+enum pci_config_type __pci_cfg_type;
+
+void pci_set_config_type(enum pci_config_type type)
+{
+  uint32_t oldcf8;
+
+  if ( type == PCI_CFG_AUTO ) {
+    /* Try to detect CM #1 */
+    cli();
+    oldcf8 = inl(0xcf8);
+    outl(~0, 0xcf8);
+    if ( inl(0xcf8) == pci_mkaddr(255,31,7,252) )
+      type = PCI_CFG_TYPE1;
+    else
+      type = PCI_CFG_TYPE2;    /* ... it better be ... */
+    outl(oldcf8, 0xcf8);
+    sti();
+  }
+
+  __pci_cfg_type = type;
+}