This commit was manufactured by cvs2svn to create branch 'vserver'.

[linux-2.6.git] / drivers / xen / pciback / conf_space_capability_vpd.c

diff --git a/drivers/xen/pciback/conf_space_capability_vpd.c b/drivers/xen/pciback/conf_space_capability_vpd.c
new file mode 100644 (file)
index 0000000..cc6b853
--- /dev/null
+++ b/drivers/xen/pciback/conf_space_capability_vpd.c
@@ -0,0 +1,42 @@
+/*
+ * PCI Backend - Configuration space overlay for Vital Product Data
+ *
+ * Author: Ryan Wilson <hap9@epoch.ncsc.mil>
+ */
+
+#include <linux/pci.h>
+#include "conf_space.h"
+#include "conf_space_capability.h"
+
+static int vpd_address_write(struct pci_dev *dev, int offset, u16 value,
+                            void *data)
+{
+       /* Disallow writes to the vital product data */
+       if (value & PCI_VPD_ADDR_F)
+               return PCIBIOS_SET_FAILED;
+       else
+               return pci_write_config_word(dev, offset, value);
+}
+
+static struct config_field caplist_vpd[] = {
+       {
+        .offset    = PCI_VPD_ADDR,
+        .size      = 2,
+        .u.w.read  = pciback_read_config_word,
+        .u.w.write = vpd_address_write,
+        },
+       {
+        .offset     = PCI_VPD_DATA,
+        .size       = 4,
+        .u.dw.read  = pciback_read_config_dword,
+        .u.dw.write = NULL,
+        },
+       {
+        .size = 0,
+        },
+};
+ 
+struct pciback_config_capability pciback_config_capability_vpd = {
+       .capability = PCI_CAP_ID_VPD,
+       .fields = caplist_vpd,
+};