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Diffstat (limited to 'drivers/iommu/mtk_iommu.c')
-rw-r--r--drivers/iommu/mtk_iommu.c174
1 files changed, 146 insertions, 28 deletions
diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c
index 0e0285348d2b..60fcd3d3b5eb 100644
--- a/drivers/iommu/mtk_iommu.c
+++ b/drivers/iommu/mtk_iommu.c
@@ -139,6 +139,7 @@
/* 2 bits: iommu type */
#define MTK_IOMMU_TYPE_MM (0x0 << 13)
#define MTK_IOMMU_TYPE_INFRA (0x1 << 13)
+#define MTK_IOMMU_TYPE_APU (0x2 << 13)
#define MTK_IOMMU_TYPE_MASK (0x3 << 13)
/* PM and clock always on. e.g. infra iommu */
#define PM_CLK_AO BIT(15)
@@ -147,6 +148,7 @@
#define TF_PORT_TO_ADDR_MT8173 BIT(18)
#define INT_ID_PORT_WIDTH_6 BIT(19)
#define CFG_IFA_MASTER_IN_ATF BIT(20)
+#define DL_WITH_MULTI_LARB BIT(21)
#define MTK_IOMMU_HAS_FLAG_MASK(pdata, _x, mask) \
((((pdata)->flags) & (mask)) == (_x))
@@ -172,6 +174,7 @@ enum mtk_iommu_plat {
M4U_MT8183,
M4U_MT8186,
M4U_MT8188,
+ M4U_MT8189,
M4U_MT8192,
M4U_MT8195,
M4U_MT8365,
@@ -335,6 +338,8 @@ static int mtk_iommu_hw_init(const struct mtk_iommu_data *data, unsigned int ban
*/
#define MTK_IOMMU_4GB_MODE_REMAP_BASE 0x140000000UL
+static LIST_HEAD(apulist); /* List the apu iommu HWs */
+static LIST_HEAD(infralist); /* List the iommu_infra HW */
static LIST_HEAD(m4ulist); /* List all the M4U HWs */
#define for_each_m4u(data, head) list_for_each_entry(data, head, list)
@@ -350,6 +355,15 @@ static const struct mtk_iommu_iova_region single_domain[] = {
#define MT8192_MULTI_REGION_NR (IS_ENABLED(CONFIG_ARCH_DMA_ADDR_T_64BIT) ? \
MT8192_MULTI_REGION_NR_MAX : 1)
+static const struct mtk_iommu_iova_region mt8189_multi_dom_apu[] = {
+ { .iova_base = 0x200000ULL, .size = SZ_512M}, /* APU SECURE */
+#if IS_ENABLED(CONFIG_ARCH_DMA_ADDR_T_64BIT)
+ { .iova_base = SZ_1G, .size = 0xc0000000}, /* APU CODE */
+ { .iova_base = 0x70000000ULL, .size = 0x12600000}, /* APU VLM */
+ { .iova_base = SZ_4G, .size = SZ_4G * 3}, /* APU VPU */
+#endif
+};
+
static const struct mtk_iommu_iova_region mt8192_multi_dom[MT8192_MULTI_REGION_NR] = {
{ .iova_base = 0x0, .size = MTK_IOMMU_IOVA_SZ_4G}, /* 0 ~ 4G, */
#if IS_ENABLED(CONFIG_ARCH_DMA_ADDR_T_64BIT)
@@ -705,7 +719,7 @@ static void mtk_iommu_domain_free(struct iommu_domain *domain)
}
static int mtk_iommu_attach_device(struct iommu_domain *domain,
- struct device *dev)
+ struct device *dev, struct iommu_domain *old)
{
struct mtk_iommu_data *data = dev_iommu_priv_get(dev), *frstdata;
struct mtk_iommu_domain *dom = to_mtk_domain(domain);
@@ -773,12 +787,12 @@ err_unlock:
}
static int mtk_iommu_identity_attach(struct iommu_domain *identity_domain,
- struct device *dev)
+ struct device *dev,
+ struct iommu_domain *old)
{
- struct iommu_domain *domain = iommu_get_domain_for_dev(dev);
struct mtk_iommu_data *data = dev_iommu_priv_get(dev);
- if (domain == identity_domain || !domain)
+ if (old == identity_domain || !old)
return 0;
mtk_iommu_config(data, dev, false, 0);
@@ -865,6 +879,7 @@ static struct iommu_device *mtk_iommu_probe_device(struct device *dev)
struct mtk_iommu_data *data = dev_iommu_priv_get(dev);
struct device_link *link;
struct device *larbdev;
+ unsigned long larbid_msk = 0;
unsigned int larbid, larbidx, i;
if (!MTK_IOMMU_IS_TYPE(data->plat_data, MTK_IOMMU_TYPE_MM))
@@ -872,30 +887,50 @@ static struct iommu_device *mtk_iommu_probe_device(struct device *dev)
/*
* Link the consumer device with the smi-larb device(supplier).
- * The device that connects with each a larb is a independent HW.
- * All the ports in each a device should be in the same larbs.
+ * w/DL_WITH_MULTI_LARB: the master may connect with multi larbs,
+ * we should create device link with each larb.
+ * w/o DL_WITH_MULTI_LARB: the master must connect with one larb,
+ * otherwise fail.
*/
larbid = MTK_M4U_TO_LARB(fwspec->ids[0]);
if (larbid >= MTK_LARB_NR_MAX)
return ERR_PTR(-EINVAL);
+ larbid_msk |= BIT(larbid);
+
for (i = 1; i < fwspec->num_ids; i++) {
larbidx = MTK_M4U_TO_LARB(fwspec->ids[i]);
- if (larbid != larbidx) {
+ if (MTK_IOMMU_HAS_FLAG(data->plat_data, DL_WITH_MULTI_LARB)) {
+ larbid_msk |= BIT(larbidx);
+ } else if (larbid != larbidx) {
dev_err(dev, "Can only use one larb. Fail@larb%d-%d.\n",
larbid, larbidx);
return ERR_PTR(-EINVAL);
}
}
- larbdev = data->larb_imu[larbid].dev;
- if (!larbdev)
- return ERR_PTR(-EINVAL);
- link = device_link_add(dev, larbdev,
- DL_FLAG_PM_RUNTIME | DL_FLAG_STATELESS);
- if (!link)
- dev_err(dev, "Unable to link %s\n", dev_name(larbdev));
+ for_each_set_bit(larbid, &larbid_msk, 32) {
+ larbdev = data->larb_imu[larbid].dev;
+ if (!larbdev)
+ return ERR_PTR(-EINVAL);
+
+ link = device_link_add(dev, larbdev,
+ DL_FLAG_PM_RUNTIME | DL_FLAG_STATELESS);
+ if (!link) {
+ dev_err(dev, "Unable to link %s\n", dev_name(larbdev));
+ goto link_remove;
+ }
+ }
+
return &data->iommu;
+
+link_remove:
+ for_each_set_bit(i, &larbid_msk, larbid) {
+ larbdev = data->larb_imu[i].dev;
+ device_link_remove(dev, larbdev);
+ }
+
+ return ERR_PTR(-ENODEV);
}
static void mtk_iommu_release_device(struct device *dev)
@@ -903,11 +938,19 @@ static void mtk_iommu_release_device(struct device *dev)
struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
struct mtk_iommu_data *data;
struct device *larbdev;
- unsigned int larbid;
+ unsigned int larbid, i;
+ unsigned long larbid_msk = 0;
data = dev_iommu_priv_get(dev);
- if (MTK_IOMMU_IS_TYPE(data->plat_data, MTK_IOMMU_TYPE_MM)) {
- larbid = MTK_M4U_TO_LARB(fwspec->ids[0]);
+ if (!MTK_IOMMU_IS_TYPE(data->plat_data, MTK_IOMMU_TYPE_MM))
+ return;
+
+ for (i = 0; i < fwspec->num_ids; i++) {
+ larbid = MTK_M4U_TO_LARB(fwspec->ids[i]);
+ larbid_msk |= BIT(larbid);
+ }
+
+ for_each_set_bit(larbid, &larbid_msk, 32) {
larbdev = data->larb_imu[larbid].dev;
device_link_remove(dev, larbdev);
}
@@ -974,6 +1017,8 @@ static int mtk_iommu_of_xlate(struct device *dev,
return -EINVAL;
dev_iommu_priv_set(dev, platform_get_drvdata(m4updev));
+
+ put_device(&m4updev->dev);
}
return iommu_fwspec_add_ids(dev, args->args, 1);
@@ -1211,16 +1256,19 @@ static int mtk_iommu_mm_dts_parse(struct device *dev, struct component_match **m
}
component_match_add(dev, match, component_compare_dev, &plarbdev->dev);
- platform_device_put(plarbdev);
}
- if (!frst_avail_smicomm_node)
- return -EINVAL;
+ if (!frst_avail_smicomm_node) {
+ ret = -EINVAL;
+ goto err_larbdev_put;
+ }
pcommdev = of_find_device_by_node(frst_avail_smicomm_node);
of_node_put(frst_avail_smicomm_node);
- if (!pcommdev)
- return -ENODEV;
+ if (!pcommdev) {
+ ret = -ENODEV;
+ goto err_larbdev_put;
+ }
data->smicomm_dev = &pcommdev->dev;
link = device_link_add(data->smicomm_dev, dev,
@@ -1228,16 +1276,16 @@ static int mtk_iommu_mm_dts_parse(struct device *dev, struct component_match **m
platform_device_put(pcommdev);
if (!link) {
dev_err(dev, "Unable to link %s.\n", dev_name(data->smicomm_dev));
- return -EINVAL;
+ ret = -EINVAL;
+ goto err_larbdev_put;
}
return 0;
err_larbdev_put:
- for (i = MTK_LARB_NR_MAX - 1; i >= 0; i--) {
- if (!data->larb_imu[i].dev)
- continue;
+ /* id mapping may not be linear, loop the whole array */
+ for (i = 0; i < MTK_LARB_NR_MAX; i++)
put_device(data->larb_imu[i].dev);
- }
+
return ret;
}
@@ -1400,8 +1448,12 @@ out_sysfs_remove:
iommu_device_sysfs_remove(&data->iommu);
out_list_del:
list_del(&data->list);
- if (MTK_IOMMU_IS_TYPE(data->plat_data, MTK_IOMMU_TYPE_MM))
+ if (MTK_IOMMU_IS_TYPE(data->plat_data, MTK_IOMMU_TYPE_MM)) {
device_link_remove(data->smicomm_dev, dev);
+
+ for (i = 0; i < MTK_LARB_NR_MAX; i++)
+ put_device(data->larb_imu[i].dev);
+ }
out_runtime_disable:
pm_runtime_disable(dev);
return ret;
@@ -1421,6 +1473,9 @@ static void mtk_iommu_remove(struct platform_device *pdev)
if (MTK_IOMMU_IS_TYPE(data->plat_data, MTK_IOMMU_TYPE_MM)) {
device_link_remove(data->smicomm_dev, &pdev->dev);
component_master_del(&pdev->dev, &mtk_iommu_com_ops);
+
+ for (i = 0; i < MTK_LARB_NR_MAX; i++)
+ put_device(data->larb_imu[i].dev);
}
pm_runtime_disable(&pdev->dev);
for (i = 0; i < data->plat_data->banks_num; i++) {
@@ -1695,6 +1750,66 @@ static const struct mtk_iommu_plat_data mt8188_data_vpp = {
27, 28 /* ccu0 */, MTK_INVALID_LARBID}, {4, 6}},
};
+static const unsigned int mt8189_apu_region_msk[][MTK_LARB_NR_MAX] = {
+ [0] = {[0] = BIT(2)}, /* Region0: fake larb 0 APU_SECURE */
+ [1] = {[0] = BIT(1)}, /* Region1: fake larb 0 APU_CODE */
+ [2] = {[0] = BIT(3)}, /* Region2: fake larb 0 APU_VLM */
+ [3] = {[0] = BIT(0)}, /* Region3: fake larb 0 APU_DATA */
+};
+
+static const struct mtk_iommu_plat_data mt8189_data_apu = {
+ .m4u_plat = M4U_MT8189,
+ .flags = IOVA_34_EN | DCM_DISABLE |
+ MTK_IOMMU_TYPE_APU | PGTABLE_PA_35_EN,
+ .hw_list = &apulist,
+ .inv_sel_reg = REG_MMU_INV_SEL_GEN2,
+ .banks_num = 1,
+ .banks_enable = {true},
+ .iova_region = mt8189_multi_dom_apu,
+ .iova_region_nr = ARRAY_SIZE(mt8189_multi_dom_apu),
+ .larbid_remap = {{0}, {1}, {2}, {3}, {4}, {5}, {6}, {7}},
+ .iova_region_larb_msk = mt8189_apu_region_msk,
+};
+
+static const struct mtk_iommu_plat_data mt8189_data_infra = {
+ .m4u_plat = M4U_MT8189,
+ .flags = WR_THROT_EN | DCM_DISABLE | MTK_IOMMU_TYPE_INFRA |
+ CFG_IFA_MASTER_IN_ATF | SHARE_PGTABLE | PGTABLE_PA_35_EN,
+ .hw_list = &infralist,
+ .banks_num = 1,
+ .banks_enable = {true},
+ .inv_sel_reg = REG_MMU_INV_SEL_GEN2,
+ .iova_region = single_domain,
+ .iova_region_nr = ARRAY_SIZE(single_domain),
+};
+
+static const u32 mt8189_larb_region_msk[MT8192_MULTI_REGION_NR_MAX][MTK_LARB_NR_MAX] = {
+ [0] = {~0, ~0, ~0, [22] = BIT(0)}, /* Region0: all ports for larb0/1/2 */
+ [1] = {[3] = ~0, [4] = ~0}, /* Region1: all ports for larb4(3)/7(4) */
+ [2] = {[5] = ~0, [6] = ~0, /* Region2: all ports for larb9(5)/11(6) */
+ [7] = ~0, [8] = ~0, /* Region2: all ports for larb13(7)/14(8) */
+ [9] = ~0, [10] = ~0, /* Region2: all ports for larb16(9)/17(10) */
+ [11] = ~0, [12] = ~0, /* Region2: all ports for larb19(11)/20(12) */
+ [21] = ~0}, /* Region2: larb21 fake GCE larb */
+};
+
+static const struct mtk_iommu_plat_data mt8189_data_mm = {
+ .m4u_plat = M4U_MT8189,
+ .flags = HAS_BCLK | HAS_SUB_COMM_3BITS | OUT_ORDER_WR_EN |
+ WR_THROT_EN | IOVA_34_EN | MTK_IOMMU_TYPE_MM |
+ PGTABLE_PA_35_EN | DL_WITH_MULTI_LARB,
+ .hw_list = &m4ulist,
+ .inv_sel_reg = REG_MMU_INV_SEL_GEN2,
+ .banks_num = 5,
+ .banks_enable = {true, false, false, false, false},
+ .iova_region = mt8192_multi_dom,
+ .iova_region_nr = ARRAY_SIZE(mt8192_multi_dom),
+ .iova_region_larb_msk = mt8189_larb_region_msk,
+ .larbid_remap = {{0}, {1}, {21/* GCE_D */, 21/* GCE_M */, 2},
+ {19, 20, 9, 11}, {7}, {4},
+ {13, 17}, {14, 16}},
+};
+
static const struct mtk_iommu_plat_data mt8192_data = {
.m4u_plat = M4U_MT8192,
.flags = HAS_BCLK | HAS_SUB_COMM_2BITS | OUT_ORDER_WR_EN |
@@ -1796,6 +1911,9 @@ static const struct of_device_id mtk_iommu_of_ids[] = {
{ .compatible = "mediatek,mt8188-iommu-infra", .data = &mt8188_data_infra},
{ .compatible = "mediatek,mt8188-iommu-vdo", .data = &mt8188_data_vdo},
{ .compatible = "mediatek,mt8188-iommu-vpp", .data = &mt8188_data_vpp},
+ { .compatible = "mediatek,mt8189-iommu-apu", .data = &mt8189_data_apu},
+ { .compatible = "mediatek,mt8189-iommu-infra", .data = &mt8189_data_infra},
+ { .compatible = "mediatek,mt8189-iommu-mm", .data = &mt8189_data_mm},
{ .compatible = "mediatek,mt8192-m4u", .data = &mt8192_data},
{ .compatible = "mediatek,mt8195-iommu-infra", .data = &mt8195_data_infra},
{ .compatible = "mediatek,mt8195-iommu-vdo", .data = &mt8195_data_vdo},
generated by cgit (git 2.34.1) at 2025-12-05 12:57:38 +0000