iwlagn: implement loading a new firmware file type
The old firmware file type does not allow indicating
any firmware capabilities, which we frequently want
to make things easier.
This implements a new firmware type that is based on
a TLV structure, and adds a TLV for the maximum length
of probe requests in scans.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
diff --git a/drivers/net/wireless/iwlwifi/iwl-dev.h b/drivers/net/wireless/iwlwifi/iwl-dev.h
index fe938d9..19a5c89 100644
--- a/drivers/net/wireless/iwlwifi/iwl-dev.h
+++ b/drivers/net/wireless/iwlwifi/iwl-dev.h
@@ -518,7 +518,7 @@
u32 len; /* bytes */
};
-/* uCode file layout */
+/* v1/v2 uCode file layout */
struct iwl_ucode_header {
__le32 ver; /* major/minor/API/serial */
union {
@@ -542,6 +542,62 @@
} u;
};
+/*
+ * new TLV uCode file layout
+ *
+ * The new TLV file format contains TLVs, that each specify
+ * some piece of data. To facilitate "groups", for example
+ * different instruction image with different capabilities,
+ * bundled with the same init image, an alternative mechanism
+ * is provided:
+ * When the alternative field is 0, that means that the item
+ * is always valid. When it is non-zero, then it is only
+ * valid in conjunction with items of the same alternative,
+ * in which case the driver (user) selects one alternative
+ * to use.
+ */
+
+enum iwl_ucode_tlv_type {
+ IWL_UCODE_TLV_INVALID = 0, /* unused */
+ IWL_UCODE_TLV_INST = 1,
+ IWL_UCODE_TLV_DATA = 2,
+ IWL_UCODE_TLV_INIT = 3,
+ IWL_UCODE_TLV_INIT_DATA = 4,
+ IWL_UCODE_TLV_BOOT = 5,
+ IWL_UCODE_TLV_PROBE_MAX_LEN = 6, /* a u32 value */
+};
+
+struct iwl_ucode_tlv {
+ __le16 type; /* see above */
+ __le16 alternative; /* see comment */
+ __le32 length; /* not including type/length fields */
+ u8 data[0];
+} __attribute__ ((packed));
+
+#define IWL_TLV_UCODE_MAGIC 0x0a4c5749
+
+struct iwl_tlv_ucode_header {
+ /*
+ * The TLV style ucode header is distinguished from
+ * the v1/v2 style header by first four bytes being
+ * zero, as such is an invalid combination of
+ * major/minor/API/serial versions.
+ */
+ __le32 zero;
+ __le32 magic;
+ u8 human_readable[64];
+ __le32 ver; /* major/minor/API/serial */
+ __le32 build;
+ __le64 alternatives; /* bitmask of valid alternatives */
+ /*
+ * The data contained herein has a TLV layout,
+ * see above for the TLV header and types.
+ * Note that each TLV is padded to a length
+ * that is a multiple of 4 for alignment.
+ */
+ u8 data[0];
+};
+
struct iwl4965_ibss_seq {
u8 mac[ETH_ALEN];
u16 seq_num;