Lines Matching refs:ss
62 int sun8i_ss_get_engine_number(struct sun8i_ss_dev *ss) in sun8i_ss_get_engine_number() argument
64 return atomic_inc_return(&ss->flow) % MAXFLOW; in sun8i_ss_get_engine_number()
67 int sun8i_ss_run_task(struct sun8i_ss_dev *ss, struct sun8i_cipher_req_ctx *rctx, in sun8i_ss_run_task() argument
76 ss->flows[flow].stat_req++; in sun8i_ss_run_task()
107 mutex_lock(&ss->mlock); in sun8i_ss_run_task()
108 writel(rctx->p_key, ss->base + SS_KEY_ADR_REG); in sun8i_ss_run_task()
113 writel(rctx->p_iv[0], ss->base + SS_IV_ADR_REG); in sun8i_ss_run_task()
115 writel(rctx->t_dst[i - 1].addr + rctx->t_dst[i - 1].len * 4 - ivlen, ss->base + SS_IV_ADR_REG); in sun8i_ss_run_task()
117 writel(rctx->p_iv[i], ss->base + SS_IV_ADR_REG); in sun8i_ss_run_task()
121 dev_dbg(ss->dev, in sun8i_ss_run_task()
128 writel(rctx->t_src[i].addr, ss->base + SS_SRC_ADR_REG); in sun8i_ss_run_task()
129 writel(rctx->t_dst[i].addr, ss->base + SS_DST_ADR_REG); in sun8i_ss_run_task()
130 writel(rctx->t_src[i].len, ss->base + SS_LEN_ADR_REG); in sun8i_ss_run_task()
132 reinit_completion(&ss->flows[flow].complete); in sun8i_ss_run_task()
133 ss->flows[flow].status = 0; in sun8i_ss_run_task()
136 writel(v, ss->base + SS_CTL_REG); in sun8i_ss_run_task()
137 mutex_unlock(&ss->mlock); in sun8i_ss_run_task()
138 wait_for_completion_interruptible_timeout(&ss->flows[flow].complete, in sun8i_ss_run_task()
140 if (ss->flows[flow].status == 0) { in sun8i_ss_run_task()
141 dev_err(ss->dev, "DMA timeout for %s\n", name); in sun8i_ss_run_task()
151 struct sun8i_ss_dev *ss = (struct sun8i_ss_dev *)data; in ss_irq_handler() local
155 p = readl(ss->base + SS_INT_STA_REG); in ss_irq_handler()
158 writel(BIT(flow), ss->base + SS_INT_STA_REG); in ss_irq_handler()
159 ss->flows[flow].status = 1; in ss_irq_handler()
160 complete(&ss->flows[flow].complete); in ss_irq_handler()
477 struct sun8i_ss_dev *ss __maybe_unused = seq->private; in sun8i_ss_debugfs_show()
483 ss->flows[i].stat_req); in sun8i_ss_debugfs_show()
489 if (!ss_algs[i].ss) in sun8i_ss_debugfs_show()
538 static void sun8i_ss_free_flows(struct sun8i_ss_dev *ss, int i) in sun8i_ss_free_flows() argument
541 crypto_engine_exit(ss->flows[i].engine); in sun8i_ss_free_flows()
549 static int allocate_flows(struct sun8i_ss_dev *ss) in allocate_flows() argument
553 ss->flows = devm_kcalloc(ss->dev, MAXFLOW, sizeof(struct sun8i_ss_flow), in allocate_flows()
555 if (!ss->flows) in allocate_flows()
559 init_completion(&ss->flows[i].complete); in allocate_flows()
561 ss->flows[i].biv = devm_kmalloc(ss->dev, AES_BLOCK_SIZE, in allocate_flows()
563 if (!ss->flows[i].biv) { in allocate_flows()
569 ss->flows[i].iv[j] = devm_kmalloc(ss->dev, AES_BLOCK_SIZE, in allocate_flows()
571 if (!ss->flows[i].iv[j]) { in allocate_flows()
578 ss->flows[i].pad = devm_kmalloc(ss->dev, MAX_PAD_SIZE, in allocate_flows()
580 if (!ss->flows[i].pad) { in allocate_flows()
584 ss->flows[i].result = in allocate_flows()
585 devm_kmalloc(ss->dev, max(SHA256_DIGEST_SIZE, in allocate_flows()
588 if (!ss->flows[i].result) { in allocate_flows()
593 ss->flows[i].engine = crypto_engine_alloc_init(ss->dev, true); in allocate_flows()
594 if (!ss->flows[i].engine) { in allocate_flows()
595 dev_err(ss->dev, "Cannot allocate engine\n"); in allocate_flows()
600 err = crypto_engine_start(ss->flows[i].engine); in allocate_flows()
602 dev_err(ss->dev, "Cannot start engine\n"); in allocate_flows()
608 sun8i_ss_free_flows(ss, i); in allocate_flows()
618 struct sun8i_ss_dev *ss = dev_get_drvdata(dev); in sun8i_ss_pm_suspend() local
621 reset_control_assert(ss->reset); in sun8i_ss_pm_suspend()
623 clk_disable_unprepare(ss->ssclks[i]); in sun8i_ss_pm_suspend()
629 struct sun8i_ss_dev *ss = dev_get_drvdata(dev); in sun8i_ss_pm_resume() local
633 if (!ss->variant->ss_clks[i].name) in sun8i_ss_pm_resume()
635 err = clk_prepare_enable(ss->ssclks[i]); in sun8i_ss_pm_resume()
637 dev_err(ss->dev, "Cannot prepare_enable %s\n", in sun8i_ss_pm_resume()
638 ss->variant->ss_clks[i].name); in sun8i_ss_pm_resume()
642 err = reset_control_deassert(ss->reset); in sun8i_ss_pm_resume()
644 dev_err(ss->dev, "Cannot deassert reset control\n"); in sun8i_ss_pm_resume()
648 writel(BIT(0) | BIT(1), ss->base + SS_INT_CTL_REG); in sun8i_ss_pm_resume()
660 static int sun8i_ss_pm_init(struct sun8i_ss_dev *ss) in sun8i_ss_pm_init() argument
664 pm_runtime_use_autosuspend(ss->dev); in sun8i_ss_pm_init()
665 pm_runtime_set_autosuspend_delay(ss->dev, 2000); in sun8i_ss_pm_init()
667 err = pm_runtime_set_suspended(ss->dev); in sun8i_ss_pm_init()
670 pm_runtime_enable(ss->dev); in sun8i_ss_pm_init()
674 static void sun8i_ss_pm_exit(struct sun8i_ss_dev *ss) in sun8i_ss_pm_exit() argument
676 pm_runtime_disable(ss->dev); in sun8i_ss_pm_exit()
679 static int sun8i_ss_register_algs(struct sun8i_ss_dev *ss) in sun8i_ss_register_algs() argument
685 ss_algs[i].ss = ss; in sun8i_ss_register_algs()
689 ss_method = ss->variant->alg_cipher[id]; in sun8i_ss_register_algs()
691 dev_info(ss->dev, in sun8i_ss_register_algs()
694 ss_algs[i].ss = NULL; in sun8i_ss_register_algs()
698 ss_method = ss->variant->op_mode[id]; in sun8i_ss_register_algs()
700 dev_info(ss->dev, "DEBUG: Blockmode of %s not supported\n", in sun8i_ss_register_algs()
702 ss_algs[i].ss = NULL; in sun8i_ss_register_algs()
705 dev_info(ss->dev, "DEBUG: Register %s\n", in sun8i_ss_register_algs()
709 dev_err(ss->dev, "Fail to register %s\n", in sun8i_ss_register_algs()
711 ss_algs[i].ss = NULL; in sun8i_ss_register_algs()
718 dev_err(ss->dev, "Fail to register %s\n", in sun8i_ss_register_algs()
720 ss_algs[i].ss = NULL; in sun8i_ss_register_algs()
725 ss_method = ss->variant->alg_hash[id]; in sun8i_ss_register_algs()
727 dev_info(ss->dev, in sun8i_ss_register_algs()
730 ss_algs[i].ss = NULL; in sun8i_ss_register_algs()
733 dev_info(ss->dev, "Register %s\n", in sun8i_ss_register_algs()
737 dev_err(ss->dev, "ERROR: Fail to register %s\n", in sun8i_ss_register_algs()
739 ss_algs[i].ss = NULL; in sun8i_ss_register_algs()
744 ss_algs[i].ss = NULL; in sun8i_ss_register_algs()
745 dev_err(ss->dev, "ERROR: tried to register an unknown algo\n"); in sun8i_ss_register_algs()
751 static void sun8i_ss_unregister_algs(struct sun8i_ss_dev *ss) in sun8i_ss_unregister_algs() argument
756 if (!ss_algs[i].ss) in sun8i_ss_unregister_algs()
760 dev_info(ss->dev, "Unregister %d %s\n", i, in sun8i_ss_unregister_algs()
765 dev_info(ss->dev, "Unregister %d %s\n", i, in sun8i_ss_unregister_algs()
770 dev_info(ss->dev, "Unregister %d %s\n", i, in sun8i_ss_unregister_algs()
778 static int sun8i_ss_get_clks(struct sun8i_ss_dev *ss) in sun8i_ss_get_clks() argument
784 if (!ss->variant->ss_clks[i].name) in sun8i_ss_get_clks()
786 ss->ssclks[i] = devm_clk_get(ss->dev, ss->variant->ss_clks[i].name); in sun8i_ss_get_clks()
787 if (IS_ERR(ss->ssclks[i])) { in sun8i_ss_get_clks()
788 err = PTR_ERR(ss->ssclks[i]); in sun8i_ss_get_clks()
789 dev_err(ss->dev, "Cannot get %s SS clock err=%d\n", in sun8i_ss_get_clks()
790 ss->variant->ss_clks[i].name, err); in sun8i_ss_get_clks()
793 cr = clk_get_rate(ss->ssclks[i]); in sun8i_ss_get_clks()
796 if (ss->variant->ss_clks[i].freq > 0 && in sun8i_ss_get_clks()
797 cr != ss->variant->ss_clks[i].freq) { in sun8i_ss_get_clks()
798 dev_info(ss->dev, "Set %s clock to %lu (%lu Mhz) from %lu (%lu Mhz)\n", in sun8i_ss_get_clks()
799 ss->variant->ss_clks[i].name, in sun8i_ss_get_clks()
800 ss->variant->ss_clks[i].freq, in sun8i_ss_get_clks()
801 ss->variant->ss_clks[i].freq / 1000000, in sun8i_ss_get_clks()
803 err = clk_set_rate(ss->ssclks[i], ss->variant->ss_clks[i].freq); in sun8i_ss_get_clks()
805 dev_err(ss->dev, "Fail to set %s clk speed to %lu hz\n", in sun8i_ss_get_clks()
806 ss->variant->ss_clks[i].name, in sun8i_ss_get_clks()
807 ss->variant->ss_clks[i].freq); in sun8i_ss_get_clks()
809 if (ss->variant->ss_clks[i].max_freq > 0 && in sun8i_ss_get_clks()
810 cr > ss->variant->ss_clks[i].max_freq) in sun8i_ss_get_clks()
811 dev_warn(ss->dev, "Frequency for %s (%lu hz) is higher than datasheet's recommendation (%lu hz)", in sun8i_ss_get_clks()
812 ss->variant->ss_clks[i].name, cr, in sun8i_ss_get_clks()
813 ss->variant->ss_clks[i].max_freq); in sun8i_ss_get_clks()
820 struct sun8i_ss_dev *ss; in sun8i_ss_probe() local
824 ss = devm_kzalloc(&pdev->dev, sizeof(*ss), GFP_KERNEL); in sun8i_ss_probe()
825 if (!ss) in sun8i_ss_probe()
828 ss->dev = &pdev->dev; in sun8i_ss_probe()
829 platform_set_drvdata(pdev, ss); in sun8i_ss_probe()
831 ss->variant = of_device_get_match_data(&pdev->dev); in sun8i_ss_probe()
832 if (!ss->variant) { in sun8i_ss_probe()
837 ss->base = devm_platform_ioremap_resource(pdev, 0); in sun8i_ss_probe()
838 if (IS_ERR(ss->base)) in sun8i_ss_probe()
839 return PTR_ERR(ss->base); in sun8i_ss_probe()
841 err = sun8i_ss_get_clks(ss); in sun8i_ss_probe()
849 ss->reset = devm_reset_control_get(&pdev->dev, NULL); in sun8i_ss_probe()
850 if (IS_ERR(ss->reset)) in sun8i_ss_probe()
851 return dev_err_probe(&pdev->dev, PTR_ERR(ss->reset), in sun8i_ss_probe()
854 mutex_init(&ss->mlock); in sun8i_ss_probe()
856 err = allocate_flows(ss); in sun8i_ss_probe()
860 err = sun8i_ss_pm_init(ss); in sun8i_ss_probe()
864 err = devm_request_irq(&pdev->dev, irq, ss_irq_handler, 0, "sun8i-ss", ss); in sun8i_ss_probe()
866 dev_err(ss->dev, "Cannot request SecuritySystem IRQ (err=%d)\n", err); in sun8i_ss_probe()
870 err = sun8i_ss_register_algs(ss); in sun8i_ss_probe()
874 err = pm_runtime_resume_and_get(ss->dev); in sun8i_ss_probe()
878 v = readl(ss->base + SS_CTL_REG); in sun8i_ss_probe()
883 pm_runtime_put_sync(ss->dev); in sun8i_ss_probe()
892 dbgfs_dir, ss, in sun8i_ss_probe()
896 ss->dbgfs_dir = dbgfs_dir; in sun8i_ss_probe()
897 ss->dbgfs_stats = dbgfs_stats; in sun8i_ss_probe()
903 sun8i_ss_unregister_algs(ss); in sun8i_ss_probe()
905 sun8i_ss_pm_exit(ss); in sun8i_ss_probe()
907 sun8i_ss_free_flows(ss, MAXFLOW - 1); in sun8i_ss_probe()
913 struct sun8i_ss_dev *ss = platform_get_drvdata(pdev); in sun8i_ss_remove() local
915 sun8i_ss_unregister_algs(ss); in sun8i_ss_remove()
918 debugfs_remove_recursive(ss->dbgfs_dir); in sun8i_ss_remove()
921 sun8i_ss_free_flows(ss, MAXFLOW - 1); in sun8i_ss_remove()
923 sun8i_ss_pm_exit(ss); in sun8i_ss_remove()