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Diffstat (limited to 'drivers/soc/tegra/cbb')
-rw-r--r--drivers/soc/tegra/cbb/tegra-cbb.c13
-rw-r--r--drivers/soc/tegra/cbb/tegra194-cbb.c18
-rw-r--r--drivers/soc/tegra/cbb/tegra234-cbb.c170
3 files changed, 148 insertions, 53 deletions
diff --git a/drivers/soc/tegra/cbb/tegra-cbb.c b/drivers/soc/tegra/cbb/tegra-cbb.c
index d200937353c7..a8566b9dd8de 100644
--- a/drivers/soc/tegra/cbb/tegra-cbb.c
+++ b/drivers/soc/tegra/cbb/tegra-cbb.c
@@ -72,18 +72,7 @@ static int tegra_cbb_err_show(struct seq_file *file, void *data)
return cbb->ops->debugfs_show(cbb, file, data);
}
-
-static int tegra_cbb_err_open(struct inode *inode, struct file *file)
-{
- return single_open(file, tegra_cbb_err_show, inode->i_private);
-}
-
-static const struct file_operations tegra_cbb_err_fops = {
- .open = tegra_cbb_err_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release
-};
+DEFINE_SHOW_ATTRIBUTE(tegra_cbb_err);
static int tegra_cbb_err_debugfs_init(struct tegra_cbb *cbb)
{
diff --git a/drivers/soc/tegra/cbb/tegra194-cbb.c b/drivers/soc/tegra/cbb/tegra194-cbb.c
index 1ae0bd9a1ac1..d4112b683f00 100644
--- a/drivers/soc/tegra/cbb/tegra194-cbb.c
+++ b/drivers/soc/tegra/cbb/tegra194-cbb.c
@@ -102,8 +102,6 @@
#define CLUSTER_NOC_VQC GENMASK(17, 16)
#define CLUSTER_NOC_MSTR_ID GENMASK(21, 18)
-#define USRBITS_MSTR_ID GENMASK(21, 18)
-
#define CBB_ERR_OPC GENMASK(4, 1)
#define CBB_ERR_ERRCODE GENMASK(10, 8)
#define CBB_ERR_LEN1 GENMASK(27, 16)
@@ -2038,15 +2036,17 @@ static irqreturn_t tegra194_cbb_err_isr(int irq, void *data)
smp_processor_id(), priv->noc->name, priv->res->start,
irq);
- mstr_id = FIELD_GET(USRBITS_MSTR_ID, priv->errlog5) - 1;
is_fatal = print_errlog(NULL, priv, status);
/*
- * If illegal request is from CCPLEX(0x1)
- * initiator then call BUG() to crash system.
+ * If illegal request is from CCPLEX(0x1) initiator
+ * and error is fatal then call BUG() to crash system.
*/
- if ((mstr_id == 0x1) && priv->noc->erd_mask_inband_err)
- is_inband_err = 1;
+ if (priv->noc->erd_mask_inband_err) {
+ mstr_id = FIELD_GET(CBB_NOC_MSTR_ID, priv->errlog5);
+ if (mstr_id == 0x1)
+ is_inband_err = 1;
+ }
}
}
@@ -2226,10 +2226,8 @@ static int tegra194_cbb_get_bridges(struct tegra194_cbb *cbb, struct device_node
cbb->bridges[i].base = devm_ioremap_resource(cbb->base.dev,
&cbb->bridges[i].res);
- if (IS_ERR(cbb->bridges[i].base)) {
- dev_err(cbb->base.dev, "failed to map AXI2APB range\n");
+ if (IS_ERR(cbb->bridges[i].base))
return PTR_ERR(cbb->bridges[i].base);
- }
}
}
diff --git a/drivers/soc/tegra/cbb/tegra234-cbb.c b/drivers/soc/tegra/cbb/tegra234-cbb.c
index 3528f9e15d5c..f33d094e5ea6 100644
--- a/drivers/soc/tegra/cbb/tegra234-cbb.c
+++ b/drivers/soc/tegra/cbb/tegra234-cbb.c
@@ -72,6 +72,11 @@
#define REQ_SOCKET_ID GENMASK(27, 24)
+#define CCPLEX_MSTRID 0x1
+#define FIREWALL_APERTURE_SZ 0x10000
+/* Write firewall check enable */
+#define WEN 0x20000
+
enum tegra234_cbb_fabric_ids {
CBB_FAB_ID,
SCE_FAB_ID,
@@ -92,11 +97,15 @@ struct tegra234_slave_lookup {
struct tegra234_cbb_fabric {
const char *name;
phys_addr_t off_mask_erd;
- bool erd_mask_inband_err;
+ phys_addr_t firewall_base;
+ unsigned int firewall_ctl;
+ unsigned int firewall_wr_ctl;
const char * const *master_id;
unsigned int notifier_offset;
const struct tegra_cbb_error *errors;
+ const int max_errors;
const struct tegra234_slave_lookup *slave_map;
+ const int max_slaves;
};
struct tegra234_cbb {
@@ -128,6 +137,44 @@ static inline struct tegra234_cbb *to_tegra234_cbb(struct tegra_cbb *cbb)
static LIST_HEAD(cbb_list);
static DEFINE_SPINLOCK(cbb_lock);
+static bool
+tegra234_cbb_write_access_allowed(struct platform_device *pdev, struct tegra234_cbb *cbb)
+{
+ u32 val;
+
+ if (!cbb->fabric->firewall_base ||
+ !cbb->fabric->firewall_ctl ||
+ !cbb->fabric->firewall_wr_ctl) {
+ dev_info(&pdev->dev, "SoC data missing for firewall\n");
+ return false;
+ }
+
+ if ((cbb->fabric->firewall_ctl > FIREWALL_APERTURE_SZ) ||
+ (cbb->fabric->firewall_wr_ctl > FIREWALL_APERTURE_SZ)) {
+ dev_err(&pdev->dev, "wrong firewall offset value\n");
+ return false;
+ }
+
+ val = readl(cbb->regs + cbb->fabric->firewall_base + cbb->fabric->firewall_ctl);
+ /*
+ * If the firewall check feature for allowing or blocking the
+ * write accesses through the firewall of a fabric is disabled
+ * then CCPLEX can write to the registers of that fabric.
+ */
+ if (!(val & WEN))
+ return true;
+
+ /*
+ * If the firewall check is enabled then check whether CCPLEX
+ * has write access to the fabric's error notifier registers
+ */
+ val = readl(cbb->regs + cbb->fabric->firewall_base + cbb->fabric->firewall_wr_ctl);
+ if (val & (BIT(CCPLEX_MSTRID)))
+ return true;
+
+ return false;
+}
+
static void tegra234_cbb_fault_enable(struct tegra_cbb *cbb)
{
struct tegra234_cbb *priv = to_tegra234_cbb(cbb);
@@ -271,6 +318,12 @@ static void tegra234_cbb_print_error(struct seq_file *file, struct tegra234_cbb
tegra_cbb_print_err(file, "\t Multiple type of errors reported\n");
while (status) {
+ if (type >= cbb->fabric->max_errors) {
+ tegra_cbb_print_err(file, "\t Wrong type index:%u, status:%u\n",
+ type, status);
+ return;
+ }
+
if (status & 0x1)
tegra_cbb_print_err(file, "\t Error Code\t\t: %s\n",
cbb->fabric->errors[type].code);
@@ -282,6 +335,12 @@ static void tegra234_cbb_print_error(struct seq_file *file, struct tegra234_cbb
type = 0;
while (overflow) {
+ if (type >= cbb->fabric->max_errors) {
+ tegra_cbb_print_err(file, "\t Wrong type index:%u, overflow:%u\n",
+ type, overflow);
+ return;
+ }
+
if (overflow & 0x1)
tegra_cbb_print_err(file, "\t Overflow\t\t: Multiple %s\n",
cbb->fabric->errors[type].code);
@@ -334,8 +393,11 @@ static void print_errlog_err(struct seq_file *file, struct tegra234_cbb *cbb)
access_type = FIELD_GET(FAB_EM_EL_ACCESSTYPE, cbb->mn_attr0);
tegra_cbb_print_err(file, "\n");
- tegra_cbb_print_err(file, "\t Error Code\t\t: %s\n",
- cbb->fabric->errors[cbb->type].code);
+ if (cbb->type < cbb->fabric->max_errors)
+ tegra_cbb_print_err(file, "\t Error Code\t\t: %s\n",
+ cbb->fabric->errors[cbb->type].code);
+ else
+ tegra_cbb_print_err(file, "\t Wrong type index:%u\n", cbb->type);
tegra_cbb_print_err(file, "\t MASTER_ID\t\t: %s\n", cbb->fabric->master_id[mstr_id]);
tegra_cbb_print_err(file, "\t Address\t\t: %#llx\n", cbb->access);
@@ -374,6 +436,11 @@ static void print_errlog_err(struct seq_file *file, struct tegra234_cbb *cbb)
if ((fab_id == PSC_FAB_ID) || (fab_id == FSI_FAB_ID))
return;
+ if (slave_id >= cbb->fabric->max_slaves) {
+ tegra_cbb_print_err(file, "\t Invalid slave_id:%d\n", slave_id);
+ return;
+ }
+
if (!strcmp(cbb->fabric->errors[cbb->type].code, "TIMEOUT_ERR")) {
tegra234_lookup_slave_timeout(file, cbb, slave_id, fab_id);
return;
@@ -517,7 +584,7 @@ static irqreturn_t tegra234_cbb_isr(int irq, void *data)
u32 status = tegra_cbb_get_status(cbb);
if (status && (irq == priv->sec_irq)) {
- tegra_cbb_print_err(NULL, "CPU:%d, Error: %s@%llx, irq=%d\n",
+ tegra_cbb_print_err(NULL, "CPU:%d, Error: %s@0x%llx, irq=%d\n",
smp_processor_id(), priv->fabric->name,
priv->res->start, irq);
@@ -525,14 +592,14 @@ static irqreturn_t tegra234_cbb_isr(int irq, void *data)
if (err)
goto unlock;
- mstr_id = FIELD_GET(USRBITS_MSTR_ID, priv->mn_user_bits);
-
/*
- * If illegal request is from CCPLEX(id:0x1) master then call BUG() to
- * crash system.
+ * If illegal request is from CCPLEX(id:0x1) master then call WARN()
*/
- if ((mstr_id == 0x1) && priv->fabric->off_mask_erd)
- is_inband_err = 1;
+ if (priv->fabric->off_mask_erd) {
+ mstr_id = FIELD_GET(USRBITS_MSTR_ID, priv->mn_user_bits);
+ if (mstr_id == CCPLEX_MSTRID)
+ is_inband_err = 1;
+ }
}
}
@@ -640,8 +707,13 @@ static const struct tegra234_cbb_fabric tegra234_aon_fabric = {
.name = "aon-fabric",
.master_id = tegra234_master_id,
.slave_map = tegra234_aon_slave_map,
+ .max_slaves = ARRAY_SIZE(tegra234_aon_slave_map),
.errors = tegra234_cbb_errors,
+ .max_errors = ARRAY_SIZE(tegra234_cbb_errors),
.notifier_offset = 0x17000,
+ .firewall_base = 0x30000,
+ .firewall_ctl = 0x8d0,
+ .firewall_wr_ctl = 0x8c8,
};
static const struct tegra234_slave_lookup tegra234_bpmp_slave_map[] = {
@@ -656,8 +728,13 @@ static const struct tegra234_cbb_fabric tegra234_bpmp_fabric = {
.name = "bpmp-fabric",
.master_id = tegra234_master_id,
.slave_map = tegra234_bpmp_slave_map,
+ .max_slaves = ARRAY_SIZE(tegra234_bpmp_slave_map),
.errors = tegra234_cbb_errors,
+ .max_errors = ARRAY_SIZE(tegra234_cbb_errors),
.notifier_offset = 0x19000,
+ .firewall_base = 0x30000,
+ .firewall_ctl = 0x8f0,
+ .firewall_wr_ctl = 0x8e8,
};
static const struct tegra234_slave_lookup tegra234_cbb_slave_map[] = {
@@ -728,55 +805,62 @@ static const struct tegra234_cbb_fabric tegra234_cbb_fabric = {
.name = "cbb-fabric",
.master_id = tegra234_master_id,
.slave_map = tegra234_cbb_slave_map,
+ .max_slaves = ARRAY_SIZE(tegra234_cbb_slave_map),
.errors = tegra234_cbb_errors,
+ .max_errors = ARRAY_SIZE(tegra234_cbb_errors),
.notifier_offset = 0x60000,
- .off_mask_erd = 0x3a004
+ .off_mask_erd = 0x3a004,
+ .firewall_base = 0x10000,
+ .firewall_ctl = 0x23f0,
+ .firewall_wr_ctl = 0x23e8,
};
-static const struct tegra234_slave_lookup tegra234_dce_slave_map[] = {
+static const struct tegra234_slave_lookup tegra234_common_slave_map[] = {
{ "AXI2APB", 0x00000 },
{ "AST0", 0x15000 },
{ "AST1", 0x16000 },
+ { "CBB", 0x17000 },
+ { "RSVD", 0x00000 },
{ "CPU", 0x18000 },
};
static const struct tegra234_cbb_fabric tegra234_dce_fabric = {
.name = "dce-fabric",
.master_id = tegra234_master_id,
- .slave_map = tegra234_dce_slave_map,
+ .slave_map = tegra234_common_slave_map,
+ .max_slaves = ARRAY_SIZE(tegra234_common_slave_map),
.errors = tegra234_cbb_errors,
+ .max_errors = ARRAY_SIZE(tegra234_cbb_errors),
.notifier_offset = 0x19000,
-};
-
-static const struct tegra234_slave_lookup tegra234_rce_slave_map[] = {
- { "AXI2APB", 0x00000 },
- { "AST0", 0x15000 },
- { "AST1", 0x16000 },
- { "CPU", 0x18000 },
+ .firewall_base = 0x30000,
+ .firewall_ctl = 0x290,
+ .firewall_wr_ctl = 0x288,
};
static const struct tegra234_cbb_fabric tegra234_rce_fabric = {
.name = "rce-fabric",
.master_id = tegra234_master_id,
- .slave_map = tegra234_rce_slave_map,
+ .slave_map = tegra234_common_slave_map,
+ .max_slaves = ARRAY_SIZE(tegra234_common_slave_map),
.errors = tegra234_cbb_errors,
+ .max_errors = ARRAY_SIZE(tegra234_cbb_errors),
.notifier_offset = 0x19000,
-};
-
-static const struct tegra234_slave_lookup tegra234_sce_slave_map[] = {
- { "AXI2APB", 0x00000 },
- { "AST0", 0x15000 },
- { "AST1", 0x16000 },
- { "CBB", 0x17000 },
- { "CPU", 0x18000 },
+ .firewall_base = 0x30000,
+ .firewall_ctl = 0x290,
+ .firewall_wr_ctl = 0x288,
};
static const struct tegra234_cbb_fabric tegra234_sce_fabric = {
.name = "sce-fabric",
.master_id = tegra234_master_id,
- .slave_map = tegra234_sce_slave_map,
+ .slave_map = tegra234_common_slave_map,
+ .max_slaves = ARRAY_SIZE(tegra234_common_slave_map),
.errors = tegra234_cbb_errors,
+ .max_errors = ARRAY_SIZE(tegra234_cbb_errors),
.notifier_offset = 0x19000,
+ .firewall_base = 0x30000,
+ .firewall_ctl = 0x290,
+ .firewall_wr_ctl = 0x288,
};
static const char * const tegra241_master_id[] = {
@@ -889,7 +973,7 @@ static const struct tegra_cbb_error tegra241_cbb_errors[] = {
};
static const struct tegra234_slave_lookup tegra241_cbb_slave_map[] = {
- { "CCPLEX", 0x50000 },
+ { "RSVD", 0x00000 },
{ "PCIE_C8", 0x51000 },
{ "PCIE_C9", 0x52000 },
{ "RSVD", 0x00000 },
@@ -942,22 +1026,32 @@ static const struct tegra234_slave_lookup tegra241_cbb_slave_map[] = {
{ "PCIE_C3", 0x58000 },
{ "PCIE_C0", 0x59000 },
{ "PCIE_C1", 0x5a000 },
+ { "CCPLEX", 0x50000 },
{ "AXI2APB_29", 0x85000 },
{ "AXI2APB_30", 0x86000 },
+ { "CBB_CENTRAL", 0x00000 },
+ { "AXI2APB_31", 0x8E000 },
+ { "AXI2APB_32", 0x8F000 },
};
static const struct tegra234_cbb_fabric tegra241_cbb_fabric = {
.name = "cbb-fabric",
.master_id = tegra241_master_id,
.slave_map = tegra241_cbb_slave_map,
+ .max_slaves = ARRAY_SIZE(tegra241_cbb_slave_map),
.errors = tegra241_cbb_errors,
+ .max_errors = ARRAY_SIZE(tegra241_cbb_errors),
.notifier_offset = 0x60000,
.off_mask_erd = 0x40004,
+ .firewall_base = 0x20000,
+ .firewall_ctl = 0x2370,
+ .firewall_wr_ctl = 0x2368,
};
static const struct tegra234_slave_lookup tegra241_bpmp_slave_map[] = {
{ "RSVD", 0x00000 },
{ "RSVD", 0x00000 },
+ { "RSVD", 0x00000 },
{ "CBB", 0x15000 },
{ "CPU", 0x16000 },
{ "AXI2APB", 0x00000 },
@@ -969,8 +1063,13 @@ static const struct tegra234_cbb_fabric tegra241_bpmp_fabric = {
.name = "bpmp-fabric",
.master_id = tegra241_master_id,
.slave_map = tegra241_bpmp_slave_map,
+ .max_slaves = ARRAY_SIZE(tegra241_bpmp_slave_map),
.errors = tegra241_cbb_errors,
+ .max_errors = ARRAY_SIZE(tegra241_cbb_errors),
.notifier_offset = 0x19000,
+ .firewall_base = 0x30000,
+ .firewall_ctl = 0x8f0,
+ .firewall_wr_ctl = 0x8e8,
};
static const struct of_device_id tegra234_cbb_dt_ids[] = {
@@ -1055,6 +1154,15 @@ static int tegra234_cbb_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, cbb);
+ /*
+ * Don't enable error reporting for a Fabric if write to it's registers
+ * is blocked by CBB firewall.
+ */
+ if (!tegra234_cbb_write_access_allowed(pdev, cbb)) {
+ dev_info(&pdev->dev, "error reporting not enabled due to firewall\n");
+ return 0;
+ }
+
spin_lock_irqsave(&cbb_lock, flags);
list_add(&cbb->base.node, &cbb_list);
spin_unlock_irqrestore(&cbb_lock, flags);
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-22 01:14:26 +0000