Merge branch 'wip-2.6.34' into old-private-masterarchived-private-master

1 files changed, 61 insertions, 0 deletions

diff --git a/drivers/pci/vpd.c b/drivers/pci/vpd.c
new file mode 100644
index 000000000000..a5a5ca17cfe6
--- /dev/null
+++ b/drivers/pci/vpd.c
@@ -0,0 +1,61 @@
+/*
+ * File:        vpd.c
+ * Purpose:     Provide PCI VPD support
+ *
+ * Copyright (C) 2010 Broadcom Corporation.
+ */
+
+#include <linux/pci.h>
+
+int pci_vpd_find_tag(const u8 *buf, unsigned int off, unsigned int len, u8 rdt)
+{
+        int i;
+
+        for (i = off; i < len; ) {
+                u8 val = buf[i];
+
+                if (val & PCI_VPD_LRDT) {
+                        /* Don't return success of the tag isn't complete */
+                        if (i + PCI_VPD_LRDT_TAG_SIZE > len)
+                                break;
+
+                        if (val == rdt)
+                                return i;
+
+                        i += PCI_VPD_LRDT_TAG_SIZE +
+                             pci_vpd_lrdt_size(&buf[i]);
+                } else {
+                        u8 tag = val & ~PCI_VPD_SRDT_LEN_MASK;
+
+                        if (tag == rdt)
+                                return i;
+
+                        if (tag == PCI_VPD_SRDT_END)
+                                break;
+
+                        i += PCI_VPD_SRDT_TAG_SIZE +
+                             pci_vpd_srdt_size(&buf[i]);
+                }
+        }
+
+        return -ENOENT;
+}
+EXPORT_SYMBOL_GPL(pci_vpd_find_tag);
+
+int pci_vpd_find_info_keyword(const u8 *buf, unsigned int off,
+                              unsigned int len, const char *kw)
+{
+        int i;
+
+        for (i = off; i + PCI_VPD_INFO_FLD_HDR_SIZE <= off + len;) {
+                if (buf[i + 0] == kw[0] &&
+                    buf[i + 1] == kw[1])
+                        return i;
+
+                i += PCI_VPD_INFO_FLD_HDR_SIZE +
+                     pci_vpd_info_field_size(&buf[i]);
+        }
+
+        return -ENOENT;
+}
+EXPORT_SYMBOL_GPL(pci_vpd_find_info_keyword);