Adding upstream version 6.1.76.upstream/6.1.76upstream

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

1 files changed, 166 insertions, 0 deletions

diff --git a/arch/powerpc/include/asm/fadump-internal.h b/arch/powerpc/include/asm/fadump-internal.h
new file mode 100644
index 000000000..27f9e11ed
--- /dev/null
+++ b/arch/powerpc/include/asm/fadump-internal.h
@@ -0,0 +1,166 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Firmware-Assisted Dump internal code.
+ *
+ * Copyright 2011, Mahesh Salgaonkar, IBM Corporation.
+ * Copyright 2019, Hari Bathini, IBM Corporation.
+ */
+
+#ifndef _ASM_POWERPC_FADUMP_INTERNAL_H
+#define _ASM_POWERPC_FADUMP_INTERNAL_H
+
+/* Maximum number of memory regions kernel supports */
+#define FADUMP_MAX_MEM_REGS			128
+
+#ifndef CONFIG_PRESERVE_FA_DUMP
+
+/* The upper limit percentage for user specified boot memory size (25%) */
+#define MAX_BOOT_MEM_RATIO			4
+
+#define memblock_num_regions(memblock_type)	(memblock.memblock_type.cnt)
+
+/* FAD commands */
+#define FADUMP_REGISTER			1
+#define FADUMP_UNREGISTER		2
+#define FADUMP_INVALIDATE		3
+
+/*
+ * Copy the ascii values for first 8 characters from a string into u64
+ * variable at their respective indexes.
+ * e.g.
+ *  The string "FADMPINF" will be converted into 0x4641444d50494e46
+ */
+static inline u64 fadump_str_to_u64(const char *str)
+{
+	u64 val = 0;
+	int i;
+
+	for (i = 0; i < sizeof(val); i++)
+		val = (*str) ? (val << 8) | *str++ : val << 8;
+	return val;
+}
+
+#define FADUMP_CPU_UNKNOWN		(~((u32)0))
+
+#define FADUMP_CRASH_INFO_MAGIC		fadump_str_to_u64("FADMPINF")
+
+/* fadump crash info structure */
+struct fadump_crash_info_header {
+	u64		magic_number;
+	u64		elfcorehdr_addr;
+	u32		crashing_cpu;
+	struct pt_regs	regs;
+	struct cpumask	cpu_mask;
+};
+
+struct fadump_memory_range {
+	u64	base;
+	u64	size;
+};
+
+/* fadump memory ranges info */
+#define RNG_NAME_SZ			16
+struct fadump_mrange_info {
+	char				name[RNG_NAME_SZ];
+	struct fadump_memory_range	*mem_ranges;
+	u32				mem_ranges_sz;
+	u32				mem_range_cnt;
+	u32				max_mem_ranges;
+	bool				is_static;
+};
+
+/* Platform specific callback functions */
+struct fadump_ops;
+
+/* Firmware-assisted dump configuration details. */
+struct fw_dump {
+	unsigned long	reserve_dump_area_start;
+	unsigned long	reserve_dump_area_size;
+	/* cmd line option during boot */
+	unsigned long	reserve_bootvar;
+
+	unsigned long	cpu_state_data_size;
+	u64		cpu_state_dest_vaddr;
+	u32		cpu_state_data_version;
+	u32		cpu_state_entry_size;
+
+	unsigned long	hpte_region_size;
+
+	unsigned long	boot_memory_size;
+	u64		boot_mem_dest_addr;
+	u64		boot_mem_addr[FADUMP_MAX_MEM_REGS];
+	u64		boot_mem_sz[FADUMP_MAX_MEM_REGS];
+	u64		boot_mem_top;
+	u64		boot_mem_regs_cnt;
+
+	unsigned long	fadumphdr_addr;
+	unsigned long	cpu_notes_buf_vaddr;
+	unsigned long	cpu_notes_buf_size;
+
+	/*
+	 * Maximum size supported by firmware to copy from source to
+	 * destination address per entry.
+	 */
+	u64		max_copy_size;
+	u64		kernel_metadata;
+
+	int		ibm_configure_kernel_dump;
+
+	unsigned long	fadump_enabled:1;
+	unsigned long	fadump_supported:1;
+	unsigned long	dump_active:1;
+	unsigned long	dump_registered:1;
+	unsigned long	nocma:1;
+
+	struct fadump_ops	*ops;
+};
+
+struct fadump_ops {
+	u64	(*fadump_init_mem_struct)(struct fw_dump *fadump_conf);
+	u64	(*fadump_get_metadata_size)(void);
+	int	(*fadump_setup_metadata)(struct fw_dump *fadump_conf);
+	u64	(*fadump_get_bootmem_min)(void);
+	int	(*fadump_register)(struct fw_dump *fadump_conf);
+	int	(*fadump_unregister)(struct fw_dump *fadump_conf);
+	int	(*fadump_invalidate)(struct fw_dump *fadump_conf);
+	void	(*fadump_cleanup)(struct fw_dump *fadump_conf);
+	int	(*fadump_process)(struct fw_dump *fadump_conf);
+	void	(*fadump_region_show)(struct fw_dump *fadump_conf,
+				      struct seq_file *m);
+	void	(*fadump_trigger)(struct fadump_crash_info_header *fdh,
+				  const char *msg);
+};
+
+/* Helper functions */
+s32 __init fadump_setup_cpu_notes_buf(u32 num_cpus);
+void fadump_free_cpu_notes_buf(void);
+u32 *__init fadump_regs_to_elf_notes(u32 *buf, struct pt_regs *regs);
+void __init fadump_update_elfcore_header(char *bufp);
+bool is_fadump_boot_mem_contiguous(void);
+bool is_fadump_reserved_mem_contiguous(void);
+
+#else /* !CONFIG_PRESERVE_FA_DUMP */
+
+/* Firmware-assisted dump configuration details. */
+struct fw_dump {
+	u64	boot_mem_top;
+	u64	dump_active;
+};
+
+#endif /* CONFIG_PRESERVE_FA_DUMP */
+
+#ifdef CONFIG_PPC_PSERIES
+extern void rtas_fadump_dt_scan(struct fw_dump *fadump_conf, u64 node);
+#else
+static inline void
+rtas_fadump_dt_scan(struct fw_dump *fadump_conf, u64 node) { }
+#endif
+
+#ifdef CONFIG_PPC_POWERNV
+extern void opal_fadump_dt_scan(struct fw_dump *fadump_conf, u64 node);
+#else
+static inline void
+opal_fadump_dt_scan(struct fw_dump *fadump_conf, u64 node) { }
+#endif
+
+#endif /* _ASM_POWERPC_FADUMP_INTERNAL_H */