76 static int tegra_mc_setup_latency_allowance(struct tegra_mc *mc)  in tegra_mc_setup_latency_allowance()  argument
83 	tick = mc->tick * clk_get_rate(mc->clk);  in tegra_mc_setup_latency_allowance()
86 	value = readl(mc->regs + MC_EMEM_ARB_CFG);  in tegra_mc_setup_latency_allowance()
89 	writel(value, mc->regs + MC_EMEM_ARB_CFG);  in tegra_mc_setup_latency_allowance()
92 	for (i = 0; i < mc->soc->num_clients; i++) {  in tegra_mc_setup_latency_allowance()
93 		const struct tegra_mc_la *la = &mc->soc->clients[i].la;  in tegra_mc_setup_latency_allowance()
96 		value = readl(mc->regs + la->reg);  in tegra_mc_setup_latency_allowance()
99 		writel(value, mc->regs + la->reg);  in tegra_mc_setup_latency_allowance()
105 void tegra_mc_write_emem_configuration(struct tegra_mc *mc, unsigned long rate)  in tegra_mc_write_emem_configuration()  argument
110 	for (i = 0; i < mc->num_timings; i++) {  in tegra_mc_write_emem_configuration()
111 		if (mc->timings[i].rate == rate) {  in tegra_mc_write_emem_configuration()
112 			timing = &mc->timings[i];  in tegra_mc_write_emem_configuration()
118 		dev_err(mc->dev, "no memory timing registered for rate %lu\n",  in tegra_mc_write_emem_configuration()
123 	for (i = 0; i < mc->soc->num_emem_regs; ++i)  in tegra_mc_write_emem_configuration()
124 		mc_writel(mc, timing->emem_data[i], mc->soc->emem_regs[i]);  in tegra_mc_write_emem_configuration()
127 unsigned int tegra_mc_get_emem_device_count(struct tegra_mc *mc)  in tegra_mc_get_emem_device_count()  argument
131 	dram_count = mc_readl(mc, MC_EMEM_ADR_CFG);  in tegra_mc_get_emem_device_count()
138 static int load_one_timing(struct tegra_mc *mc,  in load_one_timing()  argument
147 		dev_err(mc->dev,  in load_one_timing()
153 	timing->emem_data = devm_kcalloc(mc->dev, mc->soc->num_emem_regs,  in load_one_timing()
160 					 mc->soc->num_emem_regs);  in load_one_timing()
162 		dev_err(mc->dev,  in load_one_timing()
171 static int load_timings(struct tegra_mc *mc, struct device_node *node)  in load_timings()  argument
178 	mc->timings = devm_kcalloc(mc->dev, child_count, sizeof(*timing),  in load_timings()
180 	if (!mc->timings)  in load_timings()
183 	mc->num_timings = child_count;  in load_timings()
186 		timing = &mc->timings[i++];  in load_timings()
188 		err = load_one_timing(mc, timing, child);  in load_timings()
196 static int tegra_mc_setup_timings(struct tegra_mc *mc)  in tegra_mc_setup_timings()  argument
204 	mc->num_timings = 0;  in tegra_mc_setup_timings()
206 	for_each_child_of_node(mc->dev->of_node, node) {  in tegra_mc_setup_timings()
214 		err = load_timings(mc, node);  in tegra_mc_setup_timings()
221 	if (mc->num_timings == 0)  in tegra_mc_setup_timings()
222 		dev_warn(mc->dev,  in tegra_mc_setup_timings()
250 	struct tegra_mc *mc = data;  in tegra_mc_irq()  local
255 	status = mc_readl(mc, MC_INTSTATUS);  in tegra_mc_irq()
256 	mask = mc_readl(mc, MC_INTMASK);  in tegra_mc_irq()
268 		value = mc_readl(mc, MC_ERR_STATUS);  in tegra_mc_irq()
271 		if (mc->soc->num_address_bits > 32) {  in tegra_mc_irq()
288 		id = value & mc->soc->client_id_mask;  in tegra_mc_irq()
290 		for (i = 0; i < mc->soc->num_clients; i++) {  in tegra_mc_irq()
291 			if (mc->soc->clients[i].id == id) {  in tegra_mc_irq()
292 				client = mc->soc->clients[i].name;  in tegra_mc_irq()
330 		value = mc_readl(mc, MC_ERR_ADR);  in tegra_mc_irq()
333 		dev_err_ratelimited(mc->dev, "%s: %s%s @%pa: %s (%s%s)\n",  in tegra_mc_irq()
339 	mc_writel(mc, status, MC_INTSTATUS);  in tegra_mc_irq()
348 	struct tegra_mc *mc;  in tegra_mc_probe()  local
356 	mc = devm_kzalloc(&pdev->dev, sizeof(*mc), GFP_KERNEL);  in tegra_mc_probe()
357 	if (!mc)  in tegra_mc_probe()
360 	platform_set_drvdata(pdev, mc);  in tegra_mc_probe()
361 	mc->soc = match->data;  in tegra_mc_probe()
362 	mc->dev = &pdev->dev;  in tegra_mc_probe()
365 	mc->tick = 30;  in tegra_mc_probe()
368 	mc->regs = devm_ioremap_resource(&pdev->dev, res);  in tegra_mc_probe()
369 	if (IS_ERR(mc->regs))  in tegra_mc_probe()
370 		return PTR_ERR(mc->regs);  in tegra_mc_probe()
372 	mc->clk = devm_clk_get(&pdev->dev, "mc");  in tegra_mc_probe()
373 	if (IS_ERR(mc->clk)) {  in tegra_mc_probe()
375 			PTR_ERR(mc->clk));  in tegra_mc_probe()
376 		return PTR_ERR(mc->clk);  in tegra_mc_probe()
379 	err = tegra_mc_setup_latency_allowance(mc);  in tegra_mc_probe()
386 	err = tegra_mc_setup_timings(mc);  in tegra_mc_probe()
393 		mc->smmu = tegra_smmu_probe(&pdev->dev, mc->soc->smmu, mc);  in tegra_mc_probe()
394 		if (IS_ERR(mc->smmu)) {  in tegra_mc_probe()
396 				PTR_ERR(mc->smmu));  in tegra_mc_probe()
397 			return PTR_ERR(mc->smmu);  in tegra_mc_probe()
401 	mc->irq = platform_get_irq(pdev, 0);  in tegra_mc_probe()
402 	if (mc->irq < 0) {  in tegra_mc_probe()
404 		return mc->irq;  in tegra_mc_probe()
407 	err = devm_request_irq(&pdev->dev, mc->irq, tegra_mc_irq, IRQF_SHARED,  in tegra_mc_probe()
408 			       dev_name(&pdev->dev), mc);  in tegra_mc_probe()
410 		dev_err(&pdev->dev, "failed to request IRQ#%u: %d\n", mc->irq,  in tegra_mc_probe()
415 	WARN(!mc->soc->client_id_mask, "Missing client ID mask for this SoC\n");  in tegra_mc_probe()
421 	mc_writel(mc, value, MC_INTMASK);  in tegra_mc_probe()