Merge tag 'scmi-fixes-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep...

[linux-2.6-block.git] / drivers / misc / habanalabs / include / goya / goya_packets.h

diff --git a/drivers/misc/habanalabs/include/goya/goya_packets.h b/drivers/misc/habanalabs/include/goya/goya_packets.h
index a14407b975e4e9d5608cb551826bda8ec4fa6136..ef54bad2050991a2d863fb2c03afe2e52a42210f 100644 (file)
--- a/drivers/misc/habanalabs/include/goya/goya_packets.h
+++ b/drivers/misc/habanalabs/include/goya/goya_packets.h
@@ -52,6 +52,19 @@ enum goya_dma_direction {
 #define GOYA_PKT_CTL_MB_SHIFT          31
 #define GOYA_PKT_CTL_MB_MASK           0x80000000
 
+/* All packets have, at least, an 8-byte header, which contains
+ * the packet type. The kernel driver uses the packet header for packet
+ * validation and to perform any necessary required preparation before
+ * sending them off to the hardware.
+ */
+struct goya_packet {
+       __le64 header;
+       /* The rest of the packet data follows. Use the corresponding
+        * packet_XXX struct to deference the data, based on packet type
+        */
+       u8 contents[0];
+};
+
 struct packet_nop {
        __le32 reserved;
        __le32 ctl;