3  * sun4i-ss-cipher.c - hardware cryptographic accelerator for Allwinner A20 SoC
13 #include "sun4i-ss.h"
19 	struct sun4i_ss_ctx *ss = op->ss;  in sun4i_ss_opti_poll()  local
24 	/* when activating SS, the default FIFO space is SS_RX_DEFAULT(32) */  in sun4i_ss_opti_poll()
44 		dev_err_ratelimited(ss->dev, "ERROR: Some SGs are NULL\n");  in sun4i_ss_opti_poll()
55 	spin_lock_irqsave(&ss->slock, flags);  in sun4i_ss_opti_poll()
58 		writesl(ss->base + SS_KEY0 + i * 4, &op->key[i], 1);  in sun4i_ss_opti_poll()
63 			writesl(ss->base + SS_IV0 + i * 4, &v, 1);  in sun4i_ss_opti_poll()
66 	writel(mode, ss->base + SS_CTL);  in sun4i_ss_opti_poll()
81 				dev_err_ratelimited(ss->dev, "ERROR: sg_miter return null\n");  in sun4i_ss_opti_poll()
89 				writesl(ss->base + SS_RXFIFO, mi.addr + oi, todo);  in sun4i_ss_opti_poll()
99 		spaces = readl(ss->base + SS_FCSR);  in sun4i_ss_opti_poll()
109 			dev_err_ratelimited(ss->dev, "ERROR: sg_miter return null\n");  in sun4i_ss_opti_poll()
117 			readsl(ss->base + SS_TXFIFO, mo.addr + oo, todo);  in sun4i_ss_opti_poll()
138 	writel(0, ss->base + SS_CTL);  in sun4i_ss_opti_poll()
139 	spin_unlock_irqrestore(&ss->slock, flags);  in sun4i_ss_opti_poll()
169 	struct sun4i_ss_ctx *ss = op->ss;  in sun4i_ss_cipher_poll()  local
178 	/* when activating SS, the default FIFO space is SS_RX_DEFAULT(32) */  in sun4i_ss_cipher_poll()
203 		dev_err_ratelimited(ss->dev, "ERROR: Some SGs are NULL\n");  in sun4i_ss_cipher_poll()
213 	 * we can use the SS optimized function  in sun4i_ss_cipher_poll()
239 	spin_lock_irqsave(&ss->slock, flags);  in sun4i_ss_cipher_poll()
242 		writesl(ss->base + SS_KEY0 + i * 4, &op->key[i], 1);  in sun4i_ss_cipher_poll()
247 			writesl(ss->base + SS_IV0 + i * 4, &v, 1);  in sun4i_ss_cipher_poll()
250 	writel(mode, ss->base + SS_CTL);  in sun4i_ss_cipher_poll()
265 				dev_err_ratelimited(ss->dev, "ERROR: sg_miter return null\n");  in sun4i_ss_cipher_poll()
276 				writesl(ss->base + SS_RXFIFO, mi.addr + oi,  in sun4i_ss_cipher_poll()
290 				memcpy(ss->buf + ob, mi.addr + oi, todo);  in sun4i_ss_cipher_poll()
295 					writesl(ss->base + SS_RXFIFO, ss->buf,  in sun4i_ss_cipher_poll()
307 		spaces = readl(ss->base + SS_FCSR);  in sun4i_ss_cipher_poll()
319 			dev_err_ratelimited(ss->dev, "ERROR: sg_miter return null\n");  in sun4i_ss_cipher_poll()
328 			readsl(ss->base + SS_TXFIFO, mo.addr + oo, todo);  in sun4i_ss_cipher_poll()
340 			readsl(ss->base + SS_TXFIFO, ss->bufo, tx_cnt);  in sun4i_ss_cipher_poll()
352 				memcpy(mo.addr + oo, ss->bufo + obo, todo);  in sun4i_ss_cipher_poll()
377 	writel(0, ss->base + SS_CTL);  in sun4i_ss_cipher_poll()
378 	spin_unlock_irqrestore(&ss->slock, flags);  in sun4i_ss_cipher_poll()
532 	op->ss = algt->ss;  in sun4i_ss_cipher_init()
536 		dev_err(op->ss->dev, "ERROR: Cannot allocate fallback for %s %ld\n",  in sun4i_ss_cipher_init()
546 	err = pm_runtime_get_sync(op->ss->dev);  in sun4i_ss_cipher_init()
561 	pm_runtime_put(op->ss->dev);  in sun4i_ss_cipher_exit()
569 	struct sun4i_ss_ctx *ss = op->ss;  in sun4i_ss_aes_setkey()  local
582 		dev_dbg(ss->dev, "ERROR: Invalid keylen %u\n", keylen);  in sun4i_ss_aes_setkey()