diff --git a/libc/kernel/uapi/linux/idxd.h b/libc/kernel/uapi/linux/idxd.h
index 74cdabd..8724149 100644
--- a/libc/kernel/uapi/linux/idxd.h
+++ b/libc/kernel/uapi/linux/idxd.h
@@ -34,6 +34,7 @@
 #define IDXD_OP_FLAG_STORD 0x2000
 #define IDXD_OP_FLAG_DRDBK 0x4000
 #define IDXD_OP_FLAG_DSTS 0x8000
+#define IDXD_OP_FLAG_RD_SRC2_AECS 0x010000
 enum dsa_opcode {
   DSA_OPCODE_NOOP = 0,
   DSA_OPCODE_BATCH,
@@ -53,6 +54,13 @@
   DSA_OPCODE_DIF_UPDT,
   DSA_OPCODE_CFLUSH = 0x20,
 };
+enum iax_opcode {
+  IAX_OPCODE_NOOP = 0,
+  IAX_OPCODE_DRAIN = 2,
+  IAX_OPCODE_MEMMOVE,
+  IAX_OPCODE_DECOMPRESS = 0x42,
+  IAX_OPCODE_COMPRESS,
+};
 enum dsa_completion_status {
   DSA_COMP_NONE = 0,
   DSA_COMP_SUCCESS,
@@ -84,6 +92,32 @@
   DSA_COMP_HW_ERR_DRB,
   DSA_COMP_TRANSLATION_FAIL,
 };
+enum iax_completion_status {
+  IAX_COMP_NONE = 0,
+  IAX_COMP_SUCCESS,
+  IAX_COMP_PAGE_FAULT_IR = 0x04,
+  IAX_COMP_OUTBUF_OVERFLOW,
+  IAX_COMP_BAD_OPCODE = 0x10,
+  IAX_COMP_INVALID_FLAGS,
+  IAX_COMP_NOZERO_RESERVE,
+  IAX_COMP_INVALID_SIZE,
+  IAX_COMP_OVERLAP_BUFFERS = 0x16,
+  IAX_COMP_INT_HANDLE_INVAL = 0x19,
+  IAX_COMP_CRA_XLAT,
+  IAX_COMP_CRA_ALIGN,
+  IAX_COMP_ADDR_ALIGN,
+  IAX_COMP_PRIV_BAD,
+  IAX_COMP_TRAFFIC_CLASS_CONF,
+  IAX_COMP_PFAULT_RDBA,
+  IAX_COMP_HW_ERR1,
+  IAX_COMP_HW_ERR_DRB,
+  IAX_COMP_TRANSLATION_FAIL,
+  IAX_COMP_PRS_TIMEOUT,
+  IAX_COMP_WATCHDOG,
+  IAX_COMP_INVALID_COMP_FLAG = 0x30,
+  IAX_COMP_INVALID_FILTER_FLAG,
+  IAX_COMP_INVALID_NUM_ELEMS = 0x33,
+};
 #define DSA_COMP_STATUS_MASK 0x7f
 #define DSA_COMP_STATUS_WRITE 0x80
 struct dsa_hw_desc {
@@ -159,6 +193,27 @@
     uint8_t op_specific[24];
   };
 } __attribute__((packed));
+struct iax_hw_desc {
+  uint32_t pasid : 20;
+  uint32_t rsvd : 11;
+  uint32_t priv : 1;
+  uint32_t flags : 24;
+  uint32_t opcode : 8;
+  uint64_t completion_addr;
+  uint64_t src1_addr;
+  uint64_t dst_addr;
+  uint32_t src1_size;
+  uint16_t int_handle;
+  union {
+    uint16_t compr_flags;
+    uint16_t decompr_flags;
+  };
+  uint64_t src2_addr;
+  uint32_t max_dst_size;
+  uint32_t src2_size;
+  uint32_t filter_flags;
+  uint32_t num_inputs;
+} __attribute__((packed));
 struct dsa_raw_desc {
   uint64_t field[8];
 } __attribute__((packed));
@@ -203,4 +258,21 @@
 struct dsa_raw_completion_record {
   uint64_t field[4];
 } __attribute__((packed));
+struct iax_completion_record {
+  volatile uint8_t status;
+  uint8_t error_code;
+  uint16_t rsvd;
+  uint32_t bytes_completed;
+  uint64_t fault_addr;
+  uint32_t invalid_flags;
+  uint32_t rsvd2;
+  uint32_t output_size;
+  uint8_t output_bits;
+  uint8_t rsvd3;
+  uint16_t rsvd4;
+  uint64_t rsvd5[4];
+} __attribute__((packed));
+struct iax_raw_completion_record {
+  uint64_t field[8];
+} __attribute__((packed));
 #endif