Adding upstream version 6.7.12.upstream/6.7.12

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

2 files changed, 45 insertions, 3 deletions

diff --git a/drivers/pci/controller/dwc/pcie-designware-ep.c b/drivers/pci/controller/dwc/pcie-designware-ep.c
index c2630db745..19b6708f60 100644
--- a/drivers/pci/controller/dwc/pcie-designware-ep.c
+++ b/drivers/pci/controller/dwc/pcie-designware-ep.c
@@ -692,8 +692,13 @@ int dw_pcie_ep_init_complete(struct dw_pcie_ep *ep)
 		nbars = (reg & PCI_REBAR_CTRL_NBAR_MASK) >>
 			PCI_REBAR_CTRL_NBAR_SHIFT;
 
+		/*
+		 * PCIe r6.0, sec 7.8.6.2 require us to support at least one
+		 * size in the range from 1 MB to 512 GB. Advertise support
+		 * for 1 MB BAR size only.
+		 */
 		for (i = 0; i < nbars; i++, offset += PCI_REBAR_CTRL)
-			dw_pcie_writel_dbi(pci, offset + PCI_REBAR_CAP, 0x0);
+			dw_pcie_writel_dbi(pci, offset + PCI_REBAR_CAP, BIT(4));
 	}
 
 	/*
diff --git a/drivers/pci/controller/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c
index cbc3f08817..e3dc27f2ac 100644
--- a/drivers/pci/controller/dwc/pcie-qcom.c
+++ b/drivers/pci/controller/dwc/pcie-qcom.c
@@ -53,6 +53,7 @@
 #define PARF_SLV_ADDR_SPACE_SIZE		0x358
 #define PARF_DEVICE_TYPE			0x1000
 #define PARF_BDF_TO_SID_TABLE_N			0x2000
+#define PARF_BDF_TO_SID_CFG			0x2c00
 
 /* ELBI registers */
 #define ELBI_SYS_CTRL				0x04
@@ -120,6 +121,9 @@
 /* PARF_DEVICE_TYPE register fields */
 #define DEVICE_TYPE_RC				0x4
 
+/* PARF_BDF_TO_SID_CFG fields */
+#define BDF_TO_SID_BYPASS			BIT(0)
+
 /* ELBI_SYS_CTRL register fields */
 #define ELBI_SYS_CTRL_LT_ENABLE			BIT(0)
 
@@ -229,6 +233,7 @@ struct qcom_pcie_ops {
 
 struct qcom_pcie_cfg {
 	const struct qcom_pcie_ops *ops;
+	bool no_l0s;
 };
 
 struct qcom_pcie {
@@ -272,6 +277,26 @@ static int qcom_pcie_start_link(struct dw_pcie *pci)
 	return 0;
 }
 
+static void qcom_pcie_clear_aspm_l0s(struct dw_pcie *pci)
+{
+	struct qcom_pcie *pcie = to_qcom_pcie(pci);
+	u16 offset;
+	u32 val;
+
+	if (!pcie->cfg->no_l0s)
+		return;
+
+	offset = dw_pcie_find_capability(pci, PCI_CAP_ID_EXP);
+
+	dw_pcie_dbi_ro_wr_en(pci);
+
+	val = readl(pci->dbi_base + offset + PCI_EXP_LNKCAP);
+	val &= ~PCI_EXP_LNKCAP_ASPM_L0S;
+	writel(val, pci->dbi_base + offset + PCI_EXP_LNKCAP);
+
+	dw_pcie_dbi_ro_wr_dis(pci);
+}
+
 static void qcom_pcie_clear_hpc(struct dw_pcie *pci)
 {
 	u16 offset = dw_pcie_find_capability(pci, PCI_CAP_ID_EXP);
@@ -961,6 +986,7 @@ err_disable_regulators:
 
 static int qcom_pcie_post_init_2_7_0(struct qcom_pcie *pcie)
 {
+	qcom_pcie_clear_aspm_l0s(pcie->pci);
 	qcom_pcie_clear_hpc(pcie->pci);
 
 	return 0;
@@ -1008,11 +1034,17 @@ static int qcom_pcie_config_sid_1_9_0(struct qcom_pcie *pcie)
 	u8 qcom_pcie_crc8_table[CRC8_TABLE_SIZE];
 	int i, nr_map, size = 0;
 	u32 smmu_sid_base;
+	u32 val;
 
 	of_get_property(dev->of_node, "iommu-map", &size);
 	if (!size)
 		return 0;
 
+	/* Enable BDF to SID translation by disabling bypass mode (default) */
+	val = readl(pcie->parf + PARF_BDF_TO_SID_CFG);
+	val &= ~BDF_TO_SID_BYPASS;
+	writel(val, pcie->parf + PARF_BDF_TO_SID_CFG);
+
 	map = kzalloc(size, GFP_KERNEL);
 	if (!map)
 		return -ENOMEM;
@@ -1358,6 +1390,11 @@ static const struct qcom_pcie_cfg cfg_2_9_0 = {
 	.ops = &ops_2_9_0,
 };
 
+static const struct qcom_pcie_cfg cfg_sc8280xp = {
+	.ops = &ops_1_9_0,
+	.no_l0s = true,
+};
+
 static const struct dw_pcie_ops dw_pcie_ops = {
 	.link_up = qcom_pcie_link_up,
 	.start_link = qcom_pcie_start_link,
@@ -1629,11 +1666,11 @@ static const struct of_device_id qcom_pcie_match[] = {
 	{ .compatible = "qcom,pcie-ipq8074-gen3", .data = &cfg_2_9_0 },
 	{ .compatible = "qcom,pcie-msm8996", .data = &cfg_2_3_2 },
 	{ .compatible = "qcom,pcie-qcs404", .data = &cfg_2_4_0 },
-	{ .compatible = "qcom,pcie-sa8540p", .data = &cfg_1_9_0 },
+	{ .compatible = "qcom,pcie-sa8540p", .data = &cfg_sc8280xp },
 	{ .compatible = "qcom,pcie-sa8775p", .data = &cfg_1_9_0},
 	{ .compatible = "qcom,pcie-sc7280", .data = &cfg_1_9_0 },
 	{ .compatible = "qcom,pcie-sc8180x", .data = &cfg_1_9_0 },
-	{ .compatible = "qcom,pcie-sc8280xp", .data = &cfg_1_9_0 },
+	{ .compatible = "qcom,pcie-sc8280xp", .data = &cfg_sc8280xp },
 	{ .compatible = "qcom,pcie-sdm845", .data = &cfg_2_7_0 },
 	{ .compatible = "qcom,pcie-sdx55", .data = &cfg_1_9_0 },
 	{ .compatible = "qcom,pcie-sm8150", .data = &cfg_1_9_0 },