MIPS: Add Cavium OCTEON cop2/cvmseg state entries to processor.h.

Add in the cop2 and cvmseg state info to the known proc reg
data for Cavium so that it can be tracked, saved, restored.

Signed-off-by: Tomaso Paoletti <tpaoletti@caviumnetworks.com>
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 69 insertions, 0 deletions

diff --git a/arch/mips/include/asm/processor.h b/arch/mips/include/asm/processor.h
index 18ee58e39445..0f926aa0cb47 100644
--- a/arch/mips/include/asm/processor.h
+++ b/arch/mips/include/asm/processor.h
@@ -118,6 +118,60 @@ union mips_watch_reg_state {
         struct mips3264_watch_reg_state mips3264;
 };
 
+#ifdef CONFIG_CPU_CAVIUM_OCTEON
+
+struct octeon_cop2_state {
+        /* DMFC2 rt, 0x0201 */
+        unsigned long   cop2_crc_iv;
+        /* DMFC2 rt, 0x0202 (Set with DMTC2 rt, 0x1202) */
+        unsigned long   cop2_crc_length;
+        /* DMFC2 rt, 0x0200 (set with DMTC2 rt, 0x4200) */
+        unsigned long   cop2_crc_poly;
+        /* DMFC2 rt, 0x0402; DMFC2 rt, 0x040A */
+        unsigned long   cop2_llm_dat[2];
+       /* DMFC2 rt, 0x0084 */
+        unsigned long   cop2_3des_iv;
+        /* DMFC2 rt, 0x0080; DMFC2 rt, 0x0081; DMFC2 rt, 0x0082 */
+        unsigned long   cop2_3des_key[3];
+        /* DMFC2 rt, 0x0088 (Set with DMTC2 rt, 0x0098) */
+        unsigned long   cop2_3des_result;
+        /* DMFC2 rt, 0x0111 (FIXME: Read Pass1 Errata) */
+        unsigned long   cop2_aes_inp0;
+        /* DMFC2 rt, 0x0102; DMFC2 rt, 0x0103 */
+        unsigned long   cop2_aes_iv[2];
+        /* DMFC2 rt, 0x0104; DMFC2 rt, 0x0105; DMFC2 rt, 0x0106; DMFC2
+         * rt, 0x0107 */
+        unsigned long   cop2_aes_key[4];
+        /* DMFC2 rt, 0x0110 */
+        unsigned long   cop2_aes_keylen;
+        /* DMFC2 rt, 0x0100; DMFC2 rt, 0x0101 */
+        unsigned long   cop2_aes_result[2];
+        /* DMFC2 rt, 0x0240; DMFC2 rt, 0x0241; DMFC2 rt, 0x0242; DMFC2
+         * rt, 0x0243; DMFC2 rt, 0x0244; DMFC2 rt, 0x0245; DMFC2 rt,
+         * 0x0246; DMFC2 rt, 0x0247; DMFC2 rt, 0x0248; DMFC2 rt,
+         * 0x0249; DMFC2 rt, 0x024A; DMFC2 rt, 0x024B; DMFC2 rt,
+         * 0x024C; DMFC2 rt, 0x024D; DMFC2 rt, 0x024E - Pass2 */
+        unsigned long   cop2_hsh_datw[15];
+        /* DMFC2 rt, 0x0250; DMFC2 rt, 0x0251; DMFC2 rt, 0x0252; DMFC2
+         * rt, 0x0253; DMFC2 rt, 0x0254; DMFC2 rt, 0x0255; DMFC2 rt,
+         * 0x0256; DMFC2 rt, 0x0257 - Pass2 */
+        unsigned long   cop2_hsh_ivw[8];
+        /* DMFC2 rt, 0x0258; DMFC2 rt, 0x0259 - Pass2 */
+        unsigned long   cop2_gfm_mult[2];
+        /* DMFC2 rt, 0x025E - Pass2 */
+        unsigned long   cop2_gfm_poly;
+        /* DMFC2 rt, 0x025A; DMFC2 rt, 0x025B - Pass2 */
+        unsigned long   cop2_gfm_result[2];
+};
+#define INIT_OCTEON_COP2 {0,}
+
+struct octeon_cvmseg_state {
+        unsigned long cvmseg[CONFIG_CAVIUM_OCTEON_CVMSEG_SIZE]
+                            [cpu_dcache_line_size() / sizeof(unsigned long)];
+};
+
+#endif
+
 typedef struct {
         unsigned long seg;
 } mm_segment_t;
@@ -160,6 +214,10 @@ struct thread_struct {
         unsigned long trap_no;
         unsigned long irix_trampoline;  /* Wheee... */
         unsigned long irix_oldctx;
+#ifdef CONFIG_CPU_CAVIUM_OCTEON
+    struct octeon_cop2_state cp2 __attribute__ ((__aligned__(128)));
+    struct octeon_cvmseg_state cvmseg __attribute__ ((__aligned__(128)));
+#endif
         struct mips_abi *abi;
 };
 
@@ -171,6 +229,13 @@ struct thread_struct {
 #define FPAFF_INIT
 #endif /* CONFIG_MIPS_MT_FPAFF */
 
+#ifdef CONFIG_CPU_CAVIUM_OCTEON
+#define OCTEON_INIT                                             \
+        .cp2                    = INIT_OCTEON_COP2,
+#else
+#define OCTEON_INIT
+#endif /* CONFIG_CPU_CAVIUM_OCTEON */
+
 #define INIT_THREAD  {                                          \
         /*                                                      \
          * Saved main processor registers                       \
@@ -221,6 +286,10 @@ struct thread_struct {
         .trap_no                = 0,                            \
         .irix_trampoline        = 0,                            \
         .irix_oldctx            = 0,                            \
+        /*                                                      \
+         * Cavium Octeon specifics (null if not Octeon)         \
+         */                                                     \
+        OCTEON_INIT                                             \
 }
 
 struct task_struct;