4  * SPDX-License-Identifier: Apache-2.0
46 #define SHA_SHA256_BLOCK_LEN               64
56  * This struct is used by the hardware and must be stored in RAM first 4k-byte
57  * and aligned on a 256-byte boundary.
110 	gctrl_regs->GCTRL_PMER3 |= IT8XXX2_GCTRL_SRAM_CRYPTO_USED;  in it8xxx2_sha256_module_calculation()
114 	 * HW 64 bytes data calculation ~= 4us;  in it8xxx2_sha256_module_calculation()
120 		gctrl_regs->GCTRL_WNCKR = IT8XXX2_GCTRL_WN65K;  in it8xxx2_sha256_module_calculation()
130 	gctrl_regs->GCTRL_PMER3 &= ~IT8XXX2_GCTRL_SRAM_CRYPTO_USED;  in it8xxx2_sha256_module_calculation()
131 	gctrl_regs->GCTRL_PMER3;  in it8xxx2_sha256_module_calculation()
138 		return -ETIMEDOUT;  in it8xxx2_sha256_module_calculation()
150 	uint32_t rem_len = pkt->in_len;  in it8xxx2_hash_handler()
160 			rem_len = rem_len - SHA_SHA256_SRAM_BUF;  in it8xxx2_hash_handler()
164 								pkt->in_buf[in_buf_idx++];  in it8xxx2_hash_handler()
178 				rem_len--;  in it8xxx2_hash_handler()
180 								pkt->in_buf[in_buf_idx++];  in it8xxx2_hash_handler()
183 				 * If fill full 64byte then execute HW calculation.  in it8xxx2_hash_handler()
187 					/* HW automatically load 64Bytes data from DLM */  in it8xxx2_hash_handler()
200 	chip_ctx.total_len += pkt->in_len;  in it8xxx2_hash_handler()
203 		uint32_t *ob_ptr = (uint32_t *)pkt->out_buf;  in it8xxx2_hash_handler()
205 		/* Pre-processing (Padding) */  in it8xxx2_hash_handler()
207 			0, SHA_SHA256_BLOCK_LEN - chip_ctx.w_input_index);  in it8xxx2_hash_handler()
217 			/* HW automatically load 64Bytes data from DLM */  in it8xxx2_hash_handler()
226 				0, SHA_SHA256_BLOCK_LEN - chip_ctx.w_input_index);  in it8xxx2_hash_handler()
230 		 * Since input data (big-endian) are copied 1byte by 1byte to  in it8xxx2_hash_handler()
231 		 * it8xxx2 memory (little-endian), so the bit length needs to  in it8xxx2_hash_handler()
232 		 * be transformed into big-endian format and then write to memory.  in it8xxx2_hash_handler()
236 		/* HW automatically load 64Bytes data from DLM */  in it8xxx2_hash_handler()
253 		gctrl_regs->GCTRL_PMER3 |= IT8XXX2_GCTRL_SRAM_CRYPTO_USED;  in it8xxx2_hash_handler()
261 			gctrl_regs->GCTRL_WNCKR = IT8XXX2_GCTRL_WN65K;  in it8xxx2_hash_handler()
272 		gctrl_regs->GCTRL_PMER3 &= ~IT8XXX2_GCTRL_SRAM_CRYPTO_USED;  in it8xxx2_hash_handler()
273 		gctrl_regs->GCTRL_PMER3;  in it8xxx2_hash_handler()
280 			return -ETIMEDOUT;  in it8xxx2_hash_handler()
311 		return -EINVAL;  in it8xxx2_hash_begin_session()
314 	if (ctx->flags & ~(it8xxx2_query_hw_caps(dev))) {  in it8xxx2_hash_begin_session()
316 		return -EINVAL;  in it8xxx2_hash_begin_session()
320 	ctx->hash_hndlr = it8xxx2_hash_handler;  in it8xxx2_hash_begin_session()
330 	gctrl_regs->GCTRL_PMER3 &= ~IT8XXX2_GCTRL_SRAM_CRYPTO_USED;  in it8xxx2_sha_init()
331 	gctrl_regs->GCTRL_PMER3;  in it8xxx2_sha_init()
335 	/* Select SHA-2 Family, SHA-256 */  in it8xxx2_sha_init()