soc/tegra: cbb: Add support for Tegra241 (Grace)

Adding support for Tegra241 (Grace) which uses fabrics based on the CBB
2.0 architecture. Since Tegra241 requires ACPI, implement ACPI-based
probe support.

Fabrics reporting errors in Tegra241 are "CBB" and "BPMP". The CBB
fabric connects various other CBB 2.0 based fabrics and also services
the Initiators and Targets which are connected to itself. The BPMP
fabric is present in the BPMP cluster.

Signed-off-by: Sumit Gupta <sumitg@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

1 files changed, 269 insertions, 2 deletions

diff --git a/drivers/soc/tegra/cbb/tegra234-cbb.c b/drivers/soc/tegra/cbb/tegra234-cbb.c
index c437457aa349..3528f9e15d5c 100644
--- a/drivers/soc/tegra/cbb/tegra234-cbb.c
+++ b/drivers/soc/tegra/cbb/tegra234-cbb.c
@@ -10,6 +10,7 @@
  *   SLAVE_ERR
  */
 
+#include <linux/acpi.h>
 #include <linux/clk.h>
 #include <linux/cpufeature.h>
 #include <linux/debugfs.h>
@@ -293,14 +294,33 @@ static void tegra234_cbb_print_error(struct seq_file *file, struct tegra234_cbb
 static void print_errlog_err(struct seq_file *file, struct tegra234_cbb *cbb)
 {
 	u8 cache_type, prot_type, burst_length, mstr_id, grpsec, vqc, falconsec, beat_size;
-	u8 access_type, access_id, slave_id, fab_id, burst_type;
+	u8 access_type, access_id, requester_socket_id, local_socket_id, slave_id, fab_id;
 	char fabric_name[20];
+	bool is_numa = false;
+	u8 burst_type;
+
+	if (num_possible_nodes() > 1)
+		is_numa = true;
 
 	mstr_id = FIELD_GET(FAB_EM_EL_MSTRID, cbb->mn_user_bits);
 	vqc = FIELD_GET(FAB_EM_EL_VQC, cbb->mn_user_bits);
 	grpsec = FIELD_GET(FAB_EM_EL_GRPSEC, cbb->mn_user_bits);
 	falconsec = FIELD_GET(FAB_EM_EL_FALCONSEC, cbb->mn_user_bits);
 
+	/*
+	 * For SOC with multiple NUMA nodes, print cross socket access
+	 * errors only if initiator/master_id is CCPLEX, CPMU or GPU.
+	 */
+	if (is_numa) {
+		local_socket_id = numa_node_id();
+		requester_socket_id = FIELD_GET(REQ_SOCKET_ID, cbb->mn_attr2);
+
+		if (requester_socket_id != local_socket_id) {
+			if ((mstr_id != 0x1) && (mstr_id != 0x2) && (mstr_id != 0xB))
+				return;
+		}
+	}
+
 	fab_id = FIELD_GET(FAB_EM_EL_FABID, cbb->mn_attr2);
 	slave_id = FIELD_GET(FAB_EM_EL_SLAVEID, cbb->mn_attr2);
 
@@ -333,6 +353,15 @@ static void print_errlog_err(struct seq_file *file, struct tegra234_cbb *cbb)
 	else
 		strcpy(fabric_name, cbb->fabric->name);
 
+	if (is_numa) {
+		tegra_cbb_print_err(file, "\t  Requester_Socket_Id\t: %#x\n",
+				    requester_socket_id);
+		tegra_cbb_print_err(file, "\t  Local_Socket_Id\t: %#x\n",
+				    local_socket_id);
+		tegra_cbb_print_err(file, "\t  No. of NUMA_NODES\t: %#x\n",
+				    num_possible_nodes());
+	}
+
 	tegra_cbb_print_err(file, "\t  Fabric\t\t: %s\n", fabric_name);
 	tegra_cbb_print_err(file, "\t  Slave_Id\t\t: %#x\n", slave_id);
 	tegra_cbb_print_err(file, "\t  Burst_length\t\t: %#x\n", burst_length);
@@ -750,6 +779,200 @@ static const struct tegra234_cbb_fabric tegra234_sce_fabric = {
 	.notifier_offset = 0x19000,
 };
 
+static const char * const tegra241_master_id[] = {
+	[0x0] = "TZ",
+	[0x1] = "CCPLEX",
+	[0x2] = "CCPMU",
+	[0x3] = "BPMP_FW",
+	[0x4] = "PSC_FW_USER",
+	[0x5] = "PSC_FW_SUPERVISOR",
+	[0x6] = "PSC_FW_MACHINE",
+	[0x7] = "PSC_BOOT",
+	[0x8] = "BPMP_BOOT",
+	[0x9] = "JTAGM_DFT",
+	[0xa] = "CORESIGHT",
+	[0xb] = "GPU",
+	[0xc] = "PEATRANS",
+	[0xd ... 0x3f] = "RSVD"
+};
+
+/*
+ * Possible causes for Slave and Timeout errors.
+ * SLAVE_ERR:
+ * Slave being accessed responded with an error. Slave could return
+ * an error for various cases :
+ *   Unsupported access, clamp setting when power gated, register
+ *   level firewall(SCR), address hole within the slave, etc
+ *
+ * TIMEOUT_ERR:
+ * No response returned by slave. Can be due to slave being clock
+ * gated, under reset, powered down or slave inability to respond
+ * for an internal slave issue
+ */
+static const struct tegra_cbb_error tegra241_cbb_errors[] = {
+	{
+		.code = "SLAVE_ERR",
+		.desc = "Slave being accessed responded with an error."
+	}, {
+		.code = "DECODE_ERR",
+		.desc = "Attempt to access an address hole or Reserved region of memory."
+	}, {
+		.code = "FIREWALL_ERR",
+		.desc = "Attempt to access a region which is firewalled."
+	}, {
+		.code = "TIMEOUT_ERR",
+		.desc = "No response returned by slave."
+	}, {
+		.code = "PWRDOWN_ERR",
+		.desc = "Attempt to access a portion of the fabric that is powered down."
+	}, {
+		.code = "UNSUPPORTED_ERR",
+		.desc = "Attempt to access a slave through an unsupported access."
+	}, {
+		.code = "POISON_ERR",
+		.desc = "Slave responds with poison error to indicate error in data."
+	}, {
+		.code = "RSVD"
+	}, {
+		.code = "RSVD"
+	}, {
+		.code = "RSVD"
+	}, {
+		.code = "RSVD"
+	}, {
+		.code = "RSVD"
+	}, {
+		.code = "RSVD"
+	}, {
+		.code = "RSVD"
+	}, {
+		.code = "RSVD"
+	}, {
+		.code = "RSVD"
+	}, {
+		.code = "NO_SUCH_ADDRESS_ERR",
+		.desc = "The address belongs to the pri_target range but there is no register "
+			"implemented at the address."
+	}, {
+		.code = "TASK_ERR",
+		.desc = "Attempt to update a PRI task when the current task has still not "
+			"completed."
+	}, {
+		.code = "EXTERNAL_ERR",
+		.desc = "Indicates that an external PRI register access met with an error due to "
+			"any issue in the unit."
+	}, {
+		.code = "INDEX_ERR",
+		.desc = "Applicable to PRI index aperture pair, when the programmed index is "
+			"outside the range defined in the manual."
+	}, {
+		.code = "RESET_ERR",
+		.desc = "Target in Reset Error: Attempt to access a SubPri or external PRI "
+			"register but they are in reset."
+	}, {
+		.code = "REGISTER_RST_ERR",
+		.desc = "Attempt to access a PRI register but the register is partial or "
+			"completely in reset."
+	}, {
+		.code = "POWER_GATED_ERR",
+		.desc = "Returned by external PRI client when the external access goes to a power "
+			"gated domain."
+	}, {
+		.code = "SUBPRI_FS_ERR",
+		.desc = "Subpri is floorswept: Attempt to access a subpri through the main pri "
+			"target but subPri logic is floorswept."
+	}, {
+		.code = "SUBPRI_CLK_OFF_ERR",
+		.desc = "Subpri clock is off: Attempt to access a subpri through the main pri "
+			"target but subPris clock is gated/off."
+	},
+};
+
+static const struct tegra234_slave_lookup tegra241_cbb_slave_map[] = {
+	{ "CCPLEX",     0x50000 },
+	{ "PCIE_C8",    0x51000 },
+	{ "PCIE_C9",    0x52000 },
+	{ "RSVD",       0x00000 },
+	{ "RSVD",       0x00000 },
+	{ "RSVD",       0x00000 },
+	{ "RSVD",       0x00000 },
+	{ "RSVD",       0x00000 },
+	{ "RSVD",       0x00000 },
+	{ "RSVD",       0x00000 },
+	{ "RSVD",       0x00000 },
+	{ "AON",        0x5b000 },
+	{ "BPMP",       0x5c000 },
+	{ "RSVD",       0x00000 },
+	{ "RSVD",       0x00000 },
+	{ "PSC",        0x5d000 },
+	{ "STM",        0x5e000 },
+	{ "AXI2APB_1",  0x70000 },
+	{ "AXI2APB_10", 0x71000 },
+	{ "AXI2APB_11", 0x72000 },
+	{ "AXI2APB_12", 0x73000 },
+	{ "AXI2APB_13", 0x74000 },
+	{ "AXI2APB_14", 0x75000 },
+	{ "AXI2APB_15", 0x76000 },
+	{ "AXI2APB_16", 0x77000 },
+	{ "AXI2APB_17", 0x78000 },
+	{ "AXI2APB_18", 0x79000 },
+	{ "AXI2APB_19", 0x7a000 },
+	{ "AXI2APB_2",  0x7b000 },
+	{ "AXI2APB_20", 0x7c000 },
+	{ "AXI2APB_4",  0x87000 },
+	{ "AXI2APB_5",  0x88000 },
+	{ "AXI2APB_6",  0x89000 },
+	{ "AXI2APB_7",  0x8a000 },
+	{ "AXI2APB_8",  0x8b000 },
+	{ "AXI2APB_9",  0x8c000 },
+	{ "AXI2APB_3",  0x8d000 },
+	{ "AXI2APB_21", 0x7d000 },
+	{ "AXI2APB_22", 0x7e000 },
+	{ "AXI2APB_23", 0x7f000 },
+	{ "AXI2APB_24", 0x80000 },
+	{ "AXI2APB_25", 0x81000 },
+	{ "AXI2APB_26", 0x82000 },
+	{ "AXI2APB_27", 0x83000 },
+	{ "AXI2APB_28", 0x84000 },
+	{ "PCIE_C4",    0x53000 },
+	{ "PCIE_C5",    0x54000 },
+	{ "PCIE_C6",    0x55000 },
+	{ "PCIE_C7",    0x56000 },
+	{ "PCIE_C2",    0x57000 },
+	{ "PCIE_C3",    0x58000 },
+	{ "PCIE_C0",    0x59000 },
+	{ "PCIE_C1",    0x5a000 },
+	{ "AXI2APB_29", 0x85000 },
+	{ "AXI2APB_30", 0x86000 },
+};
+
+static const struct tegra234_cbb_fabric tegra241_cbb_fabric = {
+	.name = "cbb-fabric",
+	.master_id = tegra241_master_id,
+	.slave_map = tegra241_cbb_slave_map,
+	.errors = tegra241_cbb_errors,
+	.notifier_offset = 0x60000,
+	.off_mask_erd = 0x40004,
+};
+
+static const struct tegra234_slave_lookup tegra241_bpmp_slave_map[] = {
+	{ "RSVD",    0x00000 },
+	{ "RSVD",    0x00000 },
+	{ "CBB",     0x15000 },
+	{ "CPU",     0x16000 },
+	{ "AXI2APB", 0x00000 },
+	{ "DBB0",    0x17000 },
+	{ "DBB1",    0x18000 },
+};
+
+static const struct tegra234_cbb_fabric tegra241_bpmp_fabric = {
+	.name = "bpmp-fabric",
+	.master_id = tegra241_master_id,
+	.slave_map = tegra241_bpmp_slave_map,
+	.errors = tegra241_cbb_errors,
+	.notifier_offset = 0x19000,
+};
+
 static const struct of_device_id tegra234_cbb_dt_ids[] = {
 	{ .compatible = "nvidia,tegra234-cbb-fabric", .data = &tegra234_cbb_fabric },
 	{ .compatible = "nvidia,tegra234-aon-fabric", .data = &tegra234_aon_fabric },
@@ -761,6 +984,37 @@ static const struct of_device_id tegra234_cbb_dt_ids[] = {
 };
 MODULE_DEVICE_TABLE(of, tegra234_cbb_dt_ids);
 
+struct tegra234_cbb_acpi_uid {
+	const char *hid;
+	const char *uid;
+	const struct tegra234_cbb_fabric *fabric;
+};
+
+static const struct tegra234_cbb_acpi_uid tegra234_cbb_acpi_uids[] = {
+	{ "NVDA1070", "1", &tegra241_cbb_fabric },
+	{ "NVDA1070", "2", &tegra241_bpmp_fabric },
+	{ },
+};
+
+static const struct
+tegra234_cbb_fabric *tegra234_cbb_acpi_get_fabric(struct acpi_device *adev)
+{
+	const struct tegra234_cbb_acpi_uid *entry;
+
+	for (entry = tegra234_cbb_acpi_uids; entry->hid; entry++) {
+		if (acpi_dev_hid_uid_match(adev, entry->hid, entry->uid))
+			return entry->fabric;
+	}
+
+	return NULL;
+}
+
+static const struct acpi_device_id tegra241_cbb_acpi_ids[] = {
+	{ "NVDA1070" },
+	{ },
+};
+MODULE_DEVICE_TABLE(acpi, tegra241_cbb_acpi_ids);
+
 static int tegra234_cbb_probe(struct platform_device *pdev)
 {
 	const struct tegra234_cbb_fabric *fabric;
@@ -768,7 +1022,19 @@ static int tegra234_cbb_probe(struct platform_device *pdev)
 	unsigned long flags = 0;
 	int err;
 
-	fabric = of_device_get_match_data(&pdev->dev);
+	if (pdev->dev.of_node) {
+		fabric = of_device_get_match_data(&pdev->dev);
+	} else {
+		struct acpi_device *device = ACPI_COMPANION(&pdev->dev);
+		if (!device)
+			return -ENODEV;
+
+		fabric = tegra234_cbb_acpi_get_fabric(device);
+		if (!fabric) {
+			dev_err(&pdev->dev, "no device match found\n");
+			return -ENODEV;
+		}
+	}
 
 	cbb = devm_kzalloc(&pdev->dev, sizeof(*cbb), GFP_KERNEL);
 	if (!cbb)
@@ -826,6 +1092,7 @@ static struct platform_driver tegra234_cbb_driver = {
 	.driver = {
 		.name = "tegra234-cbb",
 		.of_match_table = tegra234_cbb_dt_ids,
+		.acpi_match_table = tegra241_cbb_acpi_ids,
 		.pm = &tegra234_cbb_pm,
 	},
 };