1 // SPDX-License-Identifier: GPL-2.0-or-later
60 	struct meson_mx_ao_arc_rproc_priv *priv = rproc->priv;  in meson_mx_ao_arc_rproc_start()
65 	ret = clk_prepare_enable(priv->arc_pclk);  in meson_mx_ao_arc_rproc_start()
70 			 priv->sram_pa >> 14);  in meson_mx_ao_arc_rproc_start()
71 	writel(tmp, priv->remap_base + AO_REMAP_REG0);  in meson_mx_ao_arc_rproc_start()
78 	 * same. (At least) For Meson8 and newer that bit must not be set.  in meson_mx_ao_arc_rproc_start()
80 	writel(0x0, priv->remap_base + AO_REMAP_REG1);  in meson_mx_ao_arc_rproc_start()
82 	regmap_update_bits(priv->secbus2_regmap, AO_SECURE_REG0,  in meson_mx_ao_arc_rproc_start()
85 				      priv->sram_pa >> 12));  in meson_mx_ao_arc_rproc_start()
87 	ret = reset_control_reset(priv->arc_reset);  in meson_mx_ao_arc_rproc_start()
89 		clk_disable_unprepare(priv->arc_pclk);  in meson_mx_ao_arc_rproc_start()
100 	translated_sram_addr = priv->sram_pa - MESON_AO_RPROC_MEMORY_OFFSET;  in meson_mx_ao_arc_rproc_start()
105 	writel(tmp, priv->cpu_base + AO_CPU_CNTL);  in meson_mx_ao_arc_rproc_start()
114 	struct meson_mx_ao_arc_rproc_priv *priv = rproc->priv;  in meson_mx_ao_arc_rproc_stop()
116 	writel(AO_CPU_CNTL_HALT, priv->cpu_base + AO_CPU_CNTL);  in meson_mx_ao_arc_rproc_stop()
118 	clk_disable_unprepare(priv->arc_pclk);  in meson_mx_ao_arc_rproc_stop()
126 	struct meson_mx_ao_arc_rproc_priv *priv = rproc->priv;  in meson_mx_ao_arc_rproc_da_to_va()
129 	if ((da + len) > priv->sram_size)  in meson_mx_ao_arc_rproc_da_to_va()
132 	return (void *)priv->sram_va + da;  in meson_mx_ao_arc_rproc_da_to_va()
147 	struct device *dev = &pdev->dev;  in meson_mx_ao_arc_rproc_probe()
152 	device_property_read_string(dev, "firmware-name", &fw_name);  in meson_mx_ao_arc_rproc_probe()
154 	rproc = devm_rproc_alloc(dev, "meson-mx-ao-arc",  in meson_mx_ao_arc_rproc_probe()
158 		return -ENOMEM;  in meson_mx_ao_arc_rproc_probe()
160 	rproc->has_iommu = false;  in meson_mx_ao_arc_rproc_probe()
161 	priv = rproc->priv;  in meson_mx_ao_arc_rproc_probe()
163 	priv->sram_pool = of_gen_pool_get(dev->of_node, "sram", 0);  in meson_mx_ao_arc_rproc_probe()
164 	if (!priv->sram_pool) {  in meson_mx_ao_arc_rproc_probe()
166 		return -ENODEV;  in meson_mx_ao_arc_rproc_probe()
169 	priv->sram_size = gen_pool_avail(priv->sram_pool);  in meson_mx_ao_arc_rproc_probe()
171 	priv->sram_va = gen_pool_alloc(priv->sram_pool, priv->sram_size);  in meson_mx_ao_arc_rproc_probe()
172 	if (!priv->sram_va) {  in meson_mx_ao_arc_rproc_probe()
174 		return -ENOMEM;  in meson_mx_ao_arc_rproc_probe()
177 	priv->sram_pa = gen_pool_virt_to_phys(priv->sram_pool, priv->sram_va);  in meson_mx_ao_arc_rproc_probe()
178 	if (priv->sram_pa & ~MESON_AO_RPROC_SRAM_USABLE_BITS) {  in meson_mx_ao_arc_rproc_probe()
180 		ret = -EINVAL;  in meson_mx_ao_arc_rproc_probe()
184 	priv->secbus2_regmap = syscon_regmap_lookup_by_phandle(dev->of_node,  in meson_mx_ao_arc_rproc_probe()
185 							       "amlogic,secbus2");  in meson_mx_ao_arc_rproc_probe()
186 	if (IS_ERR(priv->secbus2_regmap)) {  in meson_mx_ao_arc_rproc_probe()
187 		dev_err(dev, "Failed to find SECBUS2 regmap\n");  in meson_mx_ao_arc_rproc_probe()
188 		ret = PTR_ERR(priv->secbus2_regmap);  in meson_mx_ao_arc_rproc_probe()
192 	priv->remap_base = devm_platform_ioremap_resource_byname(pdev, "remap");  in meson_mx_ao_arc_rproc_probe()
193 	if (IS_ERR(priv->remap_base)) {  in meson_mx_ao_arc_rproc_probe()
194 		ret = PTR_ERR(priv->remap_base);  in meson_mx_ao_arc_rproc_probe()
198 	priv->cpu_base = devm_platform_ioremap_resource_byname(pdev, "cpu");  in meson_mx_ao_arc_rproc_probe()
199 	if (IS_ERR(priv->cpu_base)) {  in meson_mx_ao_arc_rproc_probe()
200 		ret = PTR_ERR(priv->cpu_base);  in meson_mx_ao_arc_rproc_probe()
204 	priv->arc_reset = devm_reset_control_get_exclusive(dev, NULL);  in meson_mx_ao_arc_rproc_probe()
205 	if (IS_ERR(priv->arc_reset)) {  in meson_mx_ao_arc_rproc_probe()
207 		ret = PTR_ERR(priv->arc_reset);  in meson_mx_ao_arc_rproc_probe()
211 	priv->arc_pclk = devm_clk_get(dev, NULL);  in meson_mx_ao_arc_rproc_probe()
212 	if (IS_ERR(priv->arc_pclk)) {  in meson_mx_ao_arc_rproc_probe()
214 		ret = PTR_ERR(priv->arc_pclk);  in meson_mx_ao_arc_rproc_probe()
227 	gen_pool_free(priv->sram_pool, priv->sram_va, priv->sram_size);  in meson_mx_ao_arc_rproc_probe()
234 	struct meson_mx_ao_arc_rproc_priv *priv = rproc->priv;  in meson_mx_ao_arc_rproc_remove()
237 	gen_pool_free(priv->sram_pool, priv->sram_va, priv->sram_size);  in meson_mx_ao_arc_rproc_remove()
241 	{ .compatible = "amlogic,meson8-ao-arc" },
242 	{ .compatible = "amlogic,meson8b-ao-arc" },
251 		.name = "meson-mx-ao-arc-rproc",