Lines Matching refs:ss
3 * sun8i-ss-prng.c - hardware cryptographic offloader for
12 #include "sun8i-ss.h"
63 struct sun8i_ss_dev *ss;
72 ss = algt->ss;
75 dev_err(ss->dev, "The PRNG is not seeded\n");
90 flow = sun8i_ss_get_engine_number(ss);
103 dma_iv = dma_map_single(ss->dev, ctx->seed, ctx->slen, DMA_TO_DEVICE);
104 if (dma_mapping_error(ss->dev, dma_iv)) {
105 dev_err(ss->dev, "Cannot DMA MAP IV\n");
110 dma_dst = dma_map_single(ss->dev, d, todo, DMA_FROM_DEVICE);
111 if (dma_mapping_error(ss->dev, dma_dst)) {
112 dev_err(ss->dev, "Cannot DMA MAP DST\n");
117 err = pm_runtime_get_sync(ss->dev);
119 pm_runtime_put_noidle(ss->dev);
124 mutex_lock(&ss->mlock);
125 writel(dma_iv, ss->base + SS_IV_ADR_REG);
127 writel(dma_iv, ss->base + SS_KEY_ADR_REG);
128 writel(dma_dst, ss->base + SS_DST_ADR_REG);
129 writel(todo / 4, ss->base + SS_LEN_ADR_REG);
131 reinit_completion(&ss->flows[flow].complete);
132 ss->flows[flow].status = 0;
136 writel(v, ss->base + SS_CTL_REG);
138 wait_for_completion_interruptible_timeout(&ss->flows[flow].complete,
140 if (ss->flows[flow].status == 0) {
141 dev_err(ss->dev, "DMA timeout for PRNG (size=%u)\n", todo);
156 mutex_unlock(&ss->mlock);
158 pm_runtime_put(ss->dev);
161 dma_unmap_single(ss->dev, dma_dst, todo, DMA_FROM_DEVICE);
163 dma_unmap_single(ss->dev, dma_iv, ctx->slen, DMA_TO_DEVICE);