[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/drivers/memory/mtk-smi.c b/src/kernel/linux/v4.14/drivers/memory/mtk-smi.c
new file mode 100644
index 0000000..7ee81fb
--- /dev/null
+++ b/src/kernel/linux/v4.14/drivers/memory/mtk-smi.c
@@ -0,0 +1,577 @@
+/*
+ * Copyright (c) 2015-2016 MediaTek Inc.
+ * Author: Yong Wu <yong.wu@mediatek.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+#include <linux/clk.h>
+#include <linux/component.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+#include <soc/mediatek/smi.h>
+#include <dt-bindings/memory/mt2701-larb-port.h>
+
+/* mt8173 */
+#define SMI_LARB_MMU_EN 0xf00
+
+/* mt2701 */
+#define REG_SMI_SECUR_CON_BASE 0x5c0
+
+/* every register control 8 port, register offset 0x4 */
+#define REG_SMI_SECUR_CON_OFFSET(id) (((id) >> 3) << 2)
+#define REG_SMI_SECUR_CON_ADDR(id) \
+ (REG_SMI_SECUR_CON_BASE + REG_SMI_SECUR_CON_OFFSET(id))
+
+/*
+ * every port have 4 bit to control, bit[port + 3] control virtual or physical,
+ * bit[port + 2 : port + 1] control the domain, bit[port] control the security
+ * or non-security.
+ */
+#define SMI_SECUR_CON_VAL_MSK(id) (~(0xf << (((id) & 0x7) << 2)))
+#define SMI_SECUR_CON_VAL_VIRT(id) BIT((((id) & 0x7) << 2) + 3)
+/* mt2701 domain should be set to 3 */
+#define SMI_SECUR_CON_VAL_DOMAIN(id) (0x3 << ((((id) & 0x7) << 2) + 1))
+
+/* mt2712 */
+#define SMI_LARB_NONSEC_CON(id) (0x380 + ((id) * 4))
+#define F_MMU_EN BIT(0)
+
+/* SMI COMMON */
+#define SMI_BUS_SEL 0x220
+#define SMI_BUS_LARB_SHIFT(larbid) ((larbid) << 1)
+/* All are MMU0 defaultly. Only specialize mmu1 here. */
+#define F_MMU1_LARB(larbid) (0x1 << SMI_BUS_LARB_SHIFT(larbid))
+
+enum mtk_smi_gen {
+ MTK_SMI_GEN1,
+ MTK_SMI_GEN2
+};
+
+struct mtk_smi_common_plat {
+ enum mtk_smi_gen gen;
+
+ /* Adjust some larbs to mmu1 to balance the bandwidth */
+ unsigned int bus_sel;
+};
+
+struct mtk_smi_larb_gen {
+ bool need_larbid;
+ int port_in_larb[MTK_LARB_NR_MAX + 1];
+ void (*config_port)(struct device *);
+};
+
+struct mtk_smi {
+ struct device *dev;
+ struct clk *clk_apb, *clk_smi;
+ struct clk *clk_gals0, *clk_gals1;
+ struct clk *clk_async; /*only needed by mt2701*/
+ void __iomem *smi_ao_base; /* only for gen1 */
+ void __iomem *base; /* only for gen2 */
+ const struct mtk_smi_common_plat *plat;
+};
+
+struct mtk_smi_larb { /* larb: local arbiter */
+ struct mtk_smi smi;
+ void __iomem *base;
+ struct device *smi_common_dev;
+ const struct mtk_smi_larb_gen *larb_gen;
+ int larbid;
+ u32 *mmu;
+};
+
+static int mtk_smi_clk_enable(const struct mtk_smi *smi)
+{
+ int ret;
+
+ ret = clk_prepare_enable(smi->clk_apb);
+ if (ret)
+ return ret;
+
+ ret = clk_prepare_enable(smi->clk_smi);
+ if (ret)
+ goto err_disable_apb;
+
+ ret = clk_prepare_enable(smi->clk_gals0);
+ if (ret)
+ goto err_disable_smi;
+
+ ret = clk_prepare_enable(smi->clk_gals1);
+ if (ret)
+ goto err_disable_gals0;
+
+ return 0;
+
+err_disable_gals0:
+ clk_disable_unprepare(smi->clk_gals0);
+err_disable_smi:
+ clk_disable_unprepare(smi->clk_smi);
+err_disable_apb:
+ clk_disable_unprepare(smi->clk_apb);
+ return ret;
+}
+
+static void mtk_smi_clk_disable(const struct mtk_smi *smi)
+{
+ clk_disable_unprepare(smi->clk_gals1);
+ clk_disable_unprepare(smi->clk_gals0);
+ clk_disable_unprepare(smi->clk_smi);
+ clk_disable_unprepare(smi->clk_apb);
+}
+
+int mtk_smi_larb_get(struct device *larbdev)
+{
+ int ret = pm_runtime_get_sync(larbdev);
+
+ return (ret < 0) ? ret : 0;
+}
+EXPORT_SYMBOL_GPL(mtk_smi_larb_get);
+
+void mtk_smi_larb_put(struct device *larbdev)
+{
+ pm_runtime_put_sync(larbdev);
+}
+EXPORT_SYMBOL_GPL(mtk_smi_larb_put);
+
+static int
+mtk_smi_larb_bind(struct device *dev, struct device *master, void *data)
+{
+ struct mtk_smi_larb *larb = dev_get_drvdata(dev);
+ struct mtk_smi_iommu *smi_iommu = data;
+ unsigned int i;
+
+ if (larb->larb_gen->need_larbid) {
+ larb->mmu = &smi_iommu->larb_imu[larb->larbid].mmu;
+ return 0;
+ }
+
+ /*
+ * If there is no larbid property, Loop to find the corresponding
+ * iommu information.
+ */
+ for (i = 0; i < smi_iommu->larb_nr; i++) {
+ if (dev == smi_iommu->larb_imu[i].dev) {
+ /* The 'mmu' may be updated in iommu-attach/detach. */
+ larb->mmu = &smi_iommu->larb_imu[i].mmu;
+ return 0;
+ }
+ }
+ return -ENODEV;
+}
+
+static void mtk_smi_larb_config_port_gen2_general(struct device *dev)
+{
+ struct mtk_smi_larb *larb = dev_get_drvdata(dev);
+ u32 reg;
+ int i;
+
+ for_each_set_bit(i, (unsigned long *)larb->mmu, 32) {
+ reg = readl_relaxed(larb->base + SMI_LARB_NONSEC_CON(i));
+ reg |= F_MMU_EN;
+ writel(reg, larb->base + SMI_LARB_NONSEC_CON(i));
+ }
+}
+
+static void mtk_smi_larb_config_port_mt2712(struct device *dev)
+{
+ struct mtk_smi_larb *larb = dev_get_drvdata(dev);
+
+ /*
+ * larb 8/9 is the bdpsys larb, the iommu_en is enabled defaultly.
+ * Don't need to set it again.
+ */
+ if (larb->larbid == 8 || larb->larbid == 9)
+ return;
+
+ mtk_smi_larb_config_port_gen2_general(dev);
+}
+
+static void mtk_smi_larb_config_port_mt8173(struct device *dev)
+{
+ struct mtk_smi_larb *larb = dev_get_drvdata(dev);
+
+ writel(*larb->mmu, larb->base + SMI_LARB_MMU_EN);
+}
+
+static void mtk_smi_larb_config_port_gen1(struct device *dev)
+{
+ struct mtk_smi_larb *larb = dev_get_drvdata(dev);
+ const struct mtk_smi_larb_gen *larb_gen = larb->larb_gen;
+ struct mtk_smi *common = dev_get_drvdata(larb->smi_common_dev);
+ int i, m4u_port_id, larb_port_num;
+ u32 sec_con_val, reg_val;
+
+ m4u_port_id = larb_gen->port_in_larb[larb->larbid];
+ larb_port_num = larb_gen->port_in_larb[larb->larbid + 1]
+ - larb_gen->port_in_larb[larb->larbid];
+
+ for (i = 0; i < larb_port_num; i++, m4u_port_id++) {
+ if (*larb->mmu & BIT(i)) {
+ /* bit[port + 3] controls the virtual or physical */
+ sec_con_val = SMI_SECUR_CON_VAL_VIRT(m4u_port_id);
+ } else {
+ /* do not need to enable m4u for this port */
+ continue;
+ }
+ reg_val = readl(common->smi_ao_base
+ + REG_SMI_SECUR_CON_ADDR(m4u_port_id));
+ reg_val &= SMI_SECUR_CON_VAL_MSK(m4u_port_id);
+ reg_val |= sec_con_val;
+ reg_val |= SMI_SECUR_CON_VAL_DOMAIN(m4u_port_id);
+ writel(reg_val,
+ common->smi_ao_base
+ + REG_SMI_SECUR_CON_ADDR(m4u_port_id));
+ }
+}
+
+static void
+mtk_smi_larb_unbind(struct device *dev, struct device *master, void *data)
+{
+ /* Do nothing as the iommu is always enabled. */
+}
+
+static const struct component_ops mtk_smi_larb_component_ops = {
+ .bind = mtk_smi_larb_bind,
+ .unbind = mtk_smi_larb_unbind,
+};
+
+static const struct mtk_smi_larb_gen mtk_smi_larb_mt8173 = {
+ /* mt8173 do not need the port in larb */
+ .config_port = mtk_smi_larb_config_port_mt8173,
+};
+
+static const struct mtk_smi_larb_gen mtk_smi_larb_mt2701 = {
+ .need_larbid = true,
+ .port_in_larb = {
+ LARB0_PORT_OFFSET, LARB1_PORT_OFFSET,
+ LARB2_PORT_OFFSET, LARB3_PORT_OFFSET
+ },
+ .config_port = mtk_smi_larb_config_port_gen1,
+};
+
+static const struct mtk_smi_larb_gen mtk_smi_larb_mt2712 = {
+ .need_larbid = true,
+ .config_port = mtk_smi_larb_config_port_mt2712,
+};
+
+static const struct mtk_smi_larb_gen mtk_smi_larb_mt8183 = {
+ .config_port = mtk_smi_larb_config_port_gen2_general,
+};
+
+static const struct of_device_id mtk_smi_larb_of_ids[] = {
+ {
+ .compatible = "mediatek,mt8173-smi-larb",
+ .data = &mtk_smi_larb_mt8173
+ },
+ {
+ .compatible = "mediatek,mt2701-smi-larb",
+ .data = &mtk_smi_larb_mt2701
+ },
+ {
+ .compatible = "mediatek,mt2712-smi-larb",
+ .data = &mtk_smi_larb_mt2712
+ },
+ {
+ .compatible = "mediatek,mt8183-smi-larb",
+ .data = &mtk_smi_larb_mt8183
+ },
+ {}
+};
+
+static int mtk_smi_larb_probe(struct platform_device *pdev)
+{
+ struct mtk_smi_larb *larb;
+ struct resource *res;
+ struct device *dev = &pdev->dev;
+ struct device_node *smi_node;
+ struct platform_device *smi_pdev;
+ int err;
+
+ larb = devm_kzalloc(dev, sizeof(*larb), GFP_KERNEL);
+ if (!larb)
+ return -ENOMEM;
+
+ larb->larb_gen = of_device_get_match_data(dev);
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ larb->base = devm_ioremap_resource(dev, res);
+ if (IS_ERR(larb->base))
+ return PTR_ERR(larb->base);
+
+ larb->smi.clk_apb = devm_clk_get(dev, "apb");
+ if (IS_ERR(larb->smi.clk_apb))
+ return PTR_ERR(larb->smi.clk_apb);
+
+ larb->smi.clk_smi = devm_clk_get(dev, "smi");
+ if (IS_ERR(larb->smi.clk_smi))
+ return PTR_ERR(larb->smi.clk_smi);
+
+ larb->smi.clk_gals0 = devm_clk_get(dev, "gals");
+ if (PTR_ERR(larb->smi.clk_gals0) == -ENOENT)
+ larb->smi.clk_gals0 = NULL;
+ else if (IS_ERR(larb->smi.clk_gals0))
+ return PTR_ERR(larb->smi.clk_gals0);
+ larb->smi.dev = dev;
+
+ if (larb->larb_gen->need_larbid) {
+ err = of_property_read_u32(dev->of_node, "mediatek,larb-id",
+ &larb->larbid);
+ if (err) {
+ dev_err(dev, "missing larbid property\n");
+ return err;
+ }
+ }
+
+ smi_node = of_parse_phandle(dev->of_node, "mediatek,smi", 0);
+ if (!smi_node)
+ return -EINVAL;
+
+ smi_pdev = of_find_device_by_node(smi_node);
+ of_node_put(smi_node);
+ if (smi_pdev) {
+ if (!platform_get_drvdata(smi_pdev))
+ return -EPROBE_DEFER;
+ larb->smi_common_dev = &smi_pdev->dev;
+ } else {
+ dev_err(dev, "Failed to get the smi_common device\n");
+ return -EINVAL;
+ }
+
+ pm_runtime_enable(dev);
+ platform_set_drvdata(pdev, larb);
+ return component_add(dev, &mtk_smi_larb_component_ops);
+}
+
+static int mtk_smi_larb_remove(struct platform_device *pdev)
+{
+ pm_runtime_disable(&pdev->dev);
+ component_del(&pdev->dev, &mtk_smi_larb_component_ops);
+ return 0;
+}
+
+static int __maybe_unused mtk_smi_larb_resume(struct device *dev)
+{
+ struct mtk_smi_larb *larb = dev_get_drvdata(dev);
+ const struct mtk_smi_larb_gen *larb_gen = larb->larb_gen;
+ int ret;
+
+ /* Power on smi-common. */
+ ret = pm_runtime_get_sync(larb->smi_common_dev);
+ if (ret < 0) {
+ dev_err(dev, "smi-common pm get failed(%d).\n", ret);
+ return ret;
+ }
+
+ ret = mtk_smi_clk_enable(&larb->smi);
+ if (ret < 0) {
+ dev_err(dev, "larb clk enable failed(%d).\n", ret);
+ pm_runtime_put_sync(larb->smi_common_dev);
+ return ret;
+ }
+
+ /* Configure the basic setting for this larb */
+ larb_gen->config_port(dev);
+
+ return 0;
+}
+
+static int __maybe_unused mtk_smi_larb_suspend(struct device *dev)
+{
+ struct mtk_smi_larb *larb = dev_get_drvdata(dev);
+
+ mtk_smi_clk_disable(&larb->smi);
+ pm_runtime_put_sync(larb->smi_common_dev);
+ return 0;
+}
+
+static const struct dev_pm_ops smi_larb_pm_ops = {
+ SET_RUNTIME_PM_OPS(mtk_smi_larb_suspend, mtk_smi_larb_resume, NULL)
+};
+
+static struct platform_driver mtk_smi_larb_driver = {
+ .probe = mtk_smi_larb_probe,
+ .remove = mtk_smi_larb_remove,
+ .driver = {
+ .name = "mtk-smi-larb",
+ .of_match_table = mtk_smi_larb_of_ids,
+ .pm = &smi_larb_pm_ops,
+ }
+};
+
+static const struct mtk_smi_common_plat mtk_smi_common_gen1 = {
+ .gen = MTK_SMI_GEN1,
+};
+
+static const struct mtk_smi_common_plat mtk_smi_common_gen2 = {
+ .gen = MTK_SMI_GEN2,
+};
+
+static const struct mtk_smi_common_plat mtk_smi_common_mt8183 = {
+ .gen = MTK_SMI_GEN2,
+ .bus_sel = F_MMU1_LARB(1) | F_MMU1_LARB(3) | F_MMU1_LARB(4) |
+ F_MMU1_LARB(7),
+};
+
+static const struct of_device_id mtk_smi_common_of_ids[] = {
+ {
+ .compatible = "mediatek,mt8173-smi-common",
+ .data = &mtk_smi_common_gen2,
+ },
+ {
+ .compatible = "mediatek,mt2701-smi-common",
+ .data = &mtk_smi_common_gen1,
+ },
+ {
+ .compatible = "mediatek,mt2712-smi-common",
+ .data = &mtk_smi_common_gen2,
+ },
+ {
+ .compatible = "mediatek,mt8183-smi-common",
+ .data = &mtk_smi_common_mt8183,
+ },
+ {}
+};
+
+static int mtk_smi_common_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct mtk_smi *common;
+ struct resource *res;
+ int ret;
+
+ common = devm_kzalloc(dev, sizeof(*common), GFP_KERNEL);
+ if (!common)
+ return -ENOMEM;
+ common->dev = dev;
+ common->plat = of_device_get_match_data(dev);
+
+ common->clk_apb = devm_clk_get(dev, "apb");
+ if (IS_ERR(common->clk_apb))
+ return PTR_ERR(common->clk_apb);
+
+ common->clk_smi = devm_clk_get(dev, "smi");
+ if (IS_ERR(common->clk_smi))
+ return PTR_ERR(common->clk_smi);
+
+ common->clk_gals0 = devm_clk_get(dev, "gals0");
+ if (PTR_ERR(common->clk_gals0) == -ENOENT)
+ common->clk_gals0 = NULL;
+ else if (IS_ERR(common->clk_gals0))
+ return PTR_ERR(common->clk_gals0);
+
+ common->clk_gals1 = devm_clk_get(dev, "gals1");
+ if (PTR_ERR(common->clk_gals1) == -ENOENT)
+ common->clk_gals1 = NULL;
+ else if (IS_ERR(common->clk_gals1))
+ return PTR_ERR(common->clk_gals1);
+
+ /*
+ * for mtk smi gen 1, we need to get the ao(always on) base to config
+ * m4u port, and we need to enable the aync clock for transform the smi
+ * clock into emi clock domain, but for mtk smi gen2, there's no smi ao
+ * base.
+ */
+ if (common->plat->gen == MTK_SMI_GEN1) {
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ common->smi_ao_base = devm_ioremap_resource(dev, res);
+ if (IS_ERR(common->smi_ao_base))
+ return PTR_ERR(common->smi_ao_base);
+
+ common->clk_async = devm_clk_get(dev, "async");
+ if (IS_ERR(common->clk_async))
+ return PTR_ERR(common->clk_async);
+
+ ret = clk_prepare_enable(common->clk_async);
+ if (ret)
+ return ret;
+ } else {
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ common->base = devm_ioremap_resource(dev, res);
+ if (IS_ERR(common->base))
+ return PTR_ERR(common->base);
+ }
+ pm_runtime_enable(dev);
+ platform_set_drvdata(pdev, common);
+ return 0;
+}
+
+static int mtk_smi_common_remove(struct platform_device *pdev)
+{
+ pm_runtime_disable(&pdev->dev);
+ return 0;
+}
+
+static int __maybe_unused mtk_smi_common_resume(struct device *dev)
+{
+ struct mtk_smi *common = dev_get_drvdata(dev);
+ unsigned int bus_sel = common->plat->bus_sel;
+ int ret;
+
+ ret = mtk_smi_clk_enable(common);
+ if (ret)
+ return ret;
+
+ if (common->plat->gen == MTK_SMI_GEN2 && bus_sel)
+ writel(bus_sel, common->base + SMI_BUS_SEL);
+ return 0;
+}
+
+static int __maybe_unused mtk_smi_common_suspend(struct device *dev)
+{
+ struct mtk_smi *common = dev_get_drvdata(dev);
+
+ mtk_smi_clk_disable(common);
+ return 0;
+}
+
+static const struct dev_pm_ops smi_common_pm_ops = {
+ SET_RUNTIME_PM_OPS(mtk_smi_common_suspend, mtk_smi_common_resume, NULL)
+};
+
+static struct platform_driver mtk_smi_common_driver = {
+ .probe = mtk_smi_common_probe,
+ .remove = mtk_smi_common_remove,
+ .driver = {
+ .name = "mtk-smi-common",
+ .of_match_table = mtk_smi_common_of_ids,
+ .pm = &smi_common_pm_ops,
+ }
+};
+
+static int __init mtk_smi_init(void)
+{
+ int ret;
+
+ ret = platform_driver_register(&mtk_smi_common_driver);
+ if (ret != 0) {
+ pr_err("Failed to register SMI driver\n");
+ return ret;
+ }
+
+ ret = platform_driver_register(&mtk_smi_larb_driver);
+ if (ret != 0) {
+ pr_err("Failed to register SMI-LARB driver\n");
+ goto err_unreg_smi;
+ }
+ return ret;
+
+err_unreg_smi:
+ platform_driver_unregister(&mtk_smi_common_driver);
+ return ret;
+}
+
+module_init(mtk_smi_init);
+
+MODULE_DESCRIPTION("MediaTek SMI driver");
+MODULE_LICENSE("GPL v2");