allwinner/sun4i-ss/sun4i-ss-cipher.c

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
23 	/* when activating SS, the default FIFO space is SS_RX_DEFAULT(32) */  in sun4i_ss_opti_poll()
41 		dev_err_ratelimited(ss->dev, "ERROR: Some SGs are NULL\n");  in sun4i_ss_opti_poll()
45 	spin_lock_irqsave(&ss->slock, flags);  in sun4i_ss_opti_poll()
48 		writel(*(op->key + i / 4), ss->base + SS_KEY0 + i);  in sun4i_ss_opti_poll()
53 			writel(v, ss->base + SS_IV0 + i * 4);  in sun4i_ss_opti_poll()
56 	writel(mode, ss->base + SS_CTL);  in sun4i_ss_opti_poll()
65 		dev_err_ratelimited(ss->dev, "ERROR: sg_miter return null\n");  in sun4i_ss_opti_poll()
79 			writesl(ss->base + SS_RXFIFO, mi.addr + oi, todo);  in sun4i_ss_opti_poll()
87 		spaces = readl(ss->base + SS_FCSR);  in sun4i_ss_opti_poll()
95 			readsl(ss->base + SS_TXFIFO, mo.addr + oo, todo);  in sun4i_ss_opti_poll()
106 			v = readl(ss->base + SS_IV0 + i * 4);  in sun4i_ss_opti_poll()
114 	writel(0, ss->base + SS_CTL);  in sun4i_ss_opti_poll()
115 	spin_unlock_irqrestore(&ss->slock, flags);  in sun4i_ss_opti_poll()
145 	struct sun4i_ss_ctx *ss = op->ss;  in sun4i_ss_cipher_poll()  local
154 	/* when activating SS, the default FIFO space is SS_RX_DEFAULT(32) */  in sun4i_ss_cipher_poll()
176 		dev_err_ratelimited(ss->dev, "ERROR: Some SGs are NULL\n");  in sun4i_ss_cipher_poll()
186 	 * we can use the SS optimized function  in sun4i_ss_cipher_poll()
205 	spin_lock_irqsave(&ss->slock, flags);  in sun4i_ss_cipher_poll()
208 		writel(*(op->key + i / 4), ss->base + SS_KEY0 + i);  in sun4i_ss_cipher_poll()
213 			writel(v, ss->base + SS_IV0 + i * 4);  in sun4i_ss_cipher_poll()
216 	writel(mode, ss->base + SS_CTL);  in sun4i_ss_cipher_poll()
225 		dev_err_ratelimited(ss->dev, "ERROR: sg_miter return null\n");  in sun4i_ss_cipher_poll()
245 				writesl(ss->base + SS_RXFIFO, mi.addr + oi,  in sun4i_ss_cipher_poll()
264 					writesl(ss->base + SS_RXFIFO, buf,  in sun4i_ss_cipher_poll()
275 		spaces = readl(ss->base + SS_FCSR);  in sun4i_ss_cipher_poll()
278 		dev_dbg(ss->dev,  in sun4i_ss_cipher_poll()
290 			readsl(ss->base + SS_TXFIFO, mo.addr + oo, todo);  in sun4i_ss_cipher_poll()
304 			readsl(ss->base + SS_TXFIFO, bufo, tx_cnt);  in sun4i_ss_cipher_poll()
330 			v = readl(ss->base + SS_IV0 + i * 4);  in sun4i_ss_cipher_poll()
338 	writel(0, ss->base + SS_CTL);  in sun4i_ss_cipher_poll()
339 	spin_unlock_irqrestore(&ss->slock, flags);  in sun4i_ss_cipher_poll()
493 	op->ss = algt->ss;  in sun4i_ss_cipher_init()
497 		dev_err(op->ss->dev, "ERROR: Cannot allocate fallback for %s %ld\n",  in sun4i_ss_cipher_init()
507 	err = pm_runtime_get_sync(op->ss->dev);  in sun4i_ss_cipher_init()
522 	pm_runtime_put(op->ss->dev);  in sun4i_ss_cipher_exit()
530 	struct sun4i_ss_ctx *ss = op->ss;  in sun4i_ss_aes_setkey()  local
543 		dev_dbg(ss->dev, "ERROR: Invalid keylen %u\n", keylen);  in sun4i_ss_aes_setkey()