Merge tag 'tegra-for-6.1-cbb' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into arm/drivers

soc/tegra: cbb: Changes for v6.1-rc1

This introduces the CBB driver that is used to provide (a lot of)
information about SErrors when things go wrong, instead of the kernel
just crashing or hanging.

* tag 'tegra-for-6.1-cbb' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
  soc/tegra: cbb: Add support for Tegra241 (Grace)
  soc/tegra: cbb: Add driver for Tegra234 CBB 2.0
  soc/tegra: cbb: Add CBB 1.0 driver for Tegra194
  soc/tegra: Set ERD bit to mask inband errors

Link: https://lore.kernel.org/r/20220916101957.1635854-2-thierry.reding@gmail.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

2 files changed, 53 insertions, 0 deletions

diff --git a/include/soc/tegra/fuse.h b/include/soc/tegra/fuse.h
index 67d2bc856fbc..977c334136e9 100644
--- a/include/soc/tegra/fuse.h
+++ b/include/soc/tegra/fuse.h
@@ -58,6 +58,7 @@ u32 tegra_read_chipid(void);
 u8 tegra_get_chip_id(void);
 u8 tegra_get_platform(void);
 bool tegra_is_silicon(void);
+int tegra194_miscreg_mask_serror(void);
 #else
 static struct tegra_sku_info tegra_sku_info __maybe_unused;
 
@@ -95,6 +96,11 @@ static inline bool tegra_is_silicon(void)
 {
 	return false;
 }
+
+static inline int tegra194_miscreg_mask_serror(void)
+{
+	return false;
+}
 #endif
 
 struct device *tegra_soc_device_register(void);
diff --git a/include/soc/tegra/tegra-cbb.h b/include/soc/tegra/tegra-cbb.h
new file mode 100644
index 000000000000..e864c2ebe794
--- /dev/null
+++ b/include/soc/tegra/tegra-cbb.h
@@ -0,0 +1,47 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) 2021-2022, NVIDIA CORPORATION. All rights reserved
+ */
+
+#ifndef TEGRA_CBB_H
+#define TEGRA_CBB_H
+
+#include <linux/list.h>
+
+struct tegra_cbb_error {
+	const char *code;
+	const char *source;
+	const char *desc;
+};
+
+struct tegra_cbb {
+	struct device *dev;
+	const struct tegra_cbb_ops *ops;
+	struct list_head node;
+};
+
+struct tegra_cbb_ops {
+	int (*debugfs_show)(struct tegra_cbb *cbb, struct seq_file *s, void *v);
+	int (*interrupt_enable)(struct tegra_cbb *cbb);
+	void (*error_enable)(struct tegra_cbb *cbb);
+	void (*fault_enable)(struct tegra_cbb *cbb);
+	void (*stall_enable)(struct tegra_cbb *cbb);
+	void (*error_clear)(struct tegra_cbb *cbb);
+	u32 (*get_status)(struct tegra_cbb *cbb);
+};
+
+int tegra_cbb_get_irq(struct platform_device *pdev, unsigned int *nonsec_irq,
+		      unsigned int *sec_irq);
+__printf(2, 3)
+void tegra_cbb_print_err(struct seq_file *file, const char *fmt, ...);
+
+void tegra_cbb_print_cache(struct seq_file *file, u32 cache);
+void tegra_cbb_print_prot(struct seq_file *file, u32 prot);
+int tegra_cbb_register(struct tegra_cbb *cbb);
+
+void tegra_cbb_fault_enable(struct tegra_cbb *cbb);
+void tegra_cbb_stall_enable(struct tegra_cbb *cbb);
+void tegra_cbb_error_clear(struct tegra_cbb *cbb);
+u32 tegra_cbb_get_status(struct tegra_cbb *cbb);
+
+#endif /* TEGRA_CBB_H */