+
+#ifndef LINUX_REMOVE
+#define CRC8_INIT_VALUE 0xFF
+#endif
+static u8 cdu_crc8_table[CRC8_TABLE_SIZE];
+
+/* Calculate and return CDU validation byte per connection type / region /
+ * cid
+ */
+static u8 ecore_calc_cdu_validation_byte(struct ecore_hwfn *p_hwfn,
+ u8 conn_type, u8 region, u32 cid)
+{
+ static u8 crc8_table_valid; /*automatically initialized to 0*/
+ u8 crc, validation_byte = 0;
+ u32 validation_string = 0;
+ u32 data_to_crc;
+
+ if (crc8_table_valid == 0) {
+ OSAL_CRC8_POPULATE(cdu_crc8_table, 0x07);
+ crc8_table_valid = 1;
+ }
+
+ /*
+ * The CRC is calculated on the String-to-compress:
+ * [31:8] = {CID[31:20],CID[11:0]}
+ * [7:4] = Region
+ * [3:0] = Type
+ */
+#if ((CDU_CONTEXT_VALIDATION_DEFAULT_CFG >> \
+ CDU_CONTEXT_VALIDATION_CFG_USE_CID) & 1)
+ validation_string |= (cid & 0xFFF00000) | ((cid & 0xFFF) << 8);
+#endif
+
+#if ((CDU_CONTEXT_VALIDATION_DEFAULT_CFG >> \
+ CDU_CONTEXT_VALIDATION_CFG_USE_REGION) & 1)
+ validation_string |= ((region & 0xF) << 4);
+#endif
+
+#if ((CDU_CONTEXT_VALIDATION_DEFAULT_CFG >> \
+ CDU_CONTEXT_VALIDATION_CFG_USE_TYPE) & 1)
+ validation_string |= (conn_type & 0xF);
+#endif
+ /* Convert to big-endian and calculate CRC8*/
+ data_to_crc = OSAL_BE32_TO_CPU(validation_string);
+
+ crc = OSAL_CRC8(cdu_crc8_table, (u8 *)&data_to_crc, sizeof(data_to_crc),
+ CRC8_INIT_VALUE);
+
+ /* The validation byte [7:0] is composed:
+ * for type A validation
+ * [7] = active configuration bit
+ * [6:0] = crc[6:0]
+ *
+ * for type B validation
+ * [7] = active configuration bit
+ * [6:3] = connection_type[3:0]
+ * [2:0] = crc[2:0]
+ */
+ validation_byte |= ((CDU_CONTEXT_VALIDATION_DEFAULT_CFG >>
+ CDU_CONTEXT_VALIDATION_CFG_USE_ACTIVE) & 1) << 7;
+
+#if ((CDU_CONTEXT_VALIDATION_DEFAULT_CFG >> \
+ CDU_CONTEXT_VALIDATION_CFG_VALIDATION_TYPE_SHIFT) & 1)
+ validation_byte |= ((conn_type & 0xF) << 3) | (crc & 0x7);
+#else
+ validation_byte |= crc & 0x7F;
+#endif
+ return validation_byte;
+}
+
+/* Calcualte and set validation bytes for session context */
+void ecore_calc_session_ctx_validation(struct ecore_hwfn *p_hwfn,
+ void *p_ctx_mem, u16 ctx_size,
+ u8 ctx_type, u32 cid)
+{
+ u8 *x_val_ptr, *t_val_ptr, *u_val_ptr, *p_ctx;
+
+ p_ctx = (u8 *)p_ctx_mem;
+
+ x_val_ptr = &p_ctx[con_region_offsets[0][ctx_type]];
+ t_val_ptr = &p_ctx[con_region_offsets[1][ctx_type]];
+ u_val_ptr = &p_ctx[con_region_offsets[2][ctx_type]];
+
+ OSAL_MEMSET(p_ctx, 0, ctx_size);
+
+ *x_val_ptr = ecore_calc_cdu_validation_byte(p_hwfn, ctx_type, 3, cid);
+ *t_val_ptr = ecore_calc_cdu_validation_byte(p_hwfn, ctx_type, 4, cid);
+ *u_val_ptr = ecore_calc_cdu_validation_byte(p_hwfn, ctx_type, 5, cid);
+}
+
+/* Calcualte and set validation bytes for task context */
+void ecore_calc_task_ctx_validation(struct ecore_hwfn *p_hwfn, void *p_ctx_mem,
+ u16 ctx_size, u8 ctx_type, u32 tid)
+{
+ u8 *p_ctx, *region1_val_ptr;
+
+ p_ctx = (u8 *)p_ctx_mem;
+ region1_val_ptr = &p_ctx[task_region_offsets[0][ctx_type]];
+
+ OSAL_MEMSET(p_ctx, 0, ctx_size);
+
+ *region1_val_ptr = ecore_calc_cdu_validation_byte(p_hwfn, ctx_type, 1,
+ tid);
+}
+
+/* Memset session context to 0 while preserving validation bytes */
+void ecore_memset_session_ctx(struct ecore_hwfn *p_hwfn, void *p_ctx_mem,
+ u32 ctx_size, u8 ctx_type)
+{
+ u8 *x_val_ptr, *t_val_ptr, *u_val_ptr, *p_ctx;
+ u8 x_val, t_val, u_val;
+
+ p_ctx = (u8 *)p_ctx_mem;
+
+ x_val_ptr = &p_ctx[con_region_offsets[0][ctx_type]];
+ t_val_ptr = &p_ctx[con_region_offsets[1][ctx_type]];
+ u_val_ptr = &p_ctx[con_region_offsets[2][ctx_type]];
+
+ x_val = *x_val_ptr;
+ t_val = *t_val_ptr;
+ u_val = *u_val_ptr;
+
+ OSAL_MEMSET(p_ctx, 0, ctx_size);
+
+ *x_val_ptr = x_val;
+ *t_val_ptr = t_val;
+ *u_val_ptr = u_val;
+}
+
+/* Memset task context to 0 while preserving validation bytes */
+void ecore_memset_task_ctx(struct ecore_hwfn *p_hwfn, void *p_ctx_mem,
+ u32 ctx_size, u8 ctx_type)
+{
+ u8 *p_ctx, *region1_val_ptr;
+ u8 region1_val;
+
+ p_ctx = (u8 *)p_ctx_mem;
+ region1_val_ptr = &p_ctx[task_region_offsets[0][ctx_type]];
+
+ region1_val = *region1_val_ptr;
+
+ OSAL_MEMSET(p_ctx, 0, ctx_size);
+
+ *region1_val_ptr = region1_val;
+}
+
+/* Enable and configure context validation */
+void ecore_enable_context_validation(struct ecore_hwfn *p_hwfn,
+ struct ecore_ptt *p_ptt)
+{
+ u32 ctx_validation;
+
+ /* Enable validation for connection region 3: CCFC_CTX_VALID0[31:24] */
+ ctx_validation = CDU_CONTEXT_VALIDATION_DEFAULT_CFG << 24;
+ ecore_wr(p_hwfn, p_ptt, CDU_REG_CCFC_CTX_VALID0, ctx_validation);
+
+ /* Enable validation for connection region 5: CCFC_CTX_VALID1[15:8] */
+ ctx_validation = CDU_CONTEXT_VALIDATION_DEFAULT_CFG << 8;
+ ecore_wr(p_hwfn, p_ptt, CDU_REG_CCFC_CTX_VALID1, ctx_validation);
+
+ /* Enable validation for connection region 1: TCFC_CTX_VALID0[15:8] */
+ ctx_validation = CDU_CONTEXT_VALIDATION_DEFAULT_CFG << 8;
+ ecore_wr(p_hwfn, p_ptt, CDU_REG_TCFC_CTX_VALID0, ctx_validation);
+}