Adding upstream version 6.6.15.upstream/6.6.15

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

1 files changed, 185 insertions, 0 deletions

diff --git a/arch/ia64/include/asm/mca.h b/arch/ia64/include/asm/mca.h
new file mode 100644
index 0000000000..0580524929
--- /dev/null
+++ b/arch/ia64/include/asm/mca.h
@@ -0,0 +1,185 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * File:	mca.h
+ * Purpose:	Machine check handling specific defines
+ *
+ * Copyright (C) 1999, 2004 Silicon Graphics, Inc.
+ * Copyright (C) Vijay Chander <vijay@engr.sgi.com>
+ * Copyright (C) Srinivasa Thirumalachar <sprasad@engr.sgi.com>
+ * Copyright (C) Russ Anderson <rja@sgi.com>
+ */
+
+#ifndef _ASM_IA64_MCA_H
+#define _ASM_IA64_MCA_H
+
+#if !defined(__ASSEMBLY__)
+
+#include <linux/percpu.h>
+#include <linux/threads.h>
+#include <linux/types.h>
+#include <asm/ptrace.h>
+
+#define IA64_MCA_RENDEZ_TIMEOUT		(20 * 1000)	/* value in milliseconds - 20 seconds */
+
+typedef struct ia64_fptr {
+	unsigned long fp;
+	unsigned long gp;
+} ia64_fptr_t;
+
+typedef union cmcv_reg_u {
+	u64	cmcv_regval;
+	struct	{
+		u64	cmcr_vector		: 8;
+		u64	cmcr_reserved1		: 4;
+		u64	cmcr_ignored1		: 1;
+		u64	cmcr_reserved2		: 3;
+		u64	cmcr_mask		: 1;
+		u64	cmcr_ignored2		: 47;
+	} cmcv_reg_s;
+
+} cmcv_reg_t;
+
+#define cmcv_mask		cmcv_reg_s.cmcr_mask
+#define cmcv_vector		cmcv_reg_s.cmcr_vector
+
+enum {
+	IA64_MCA_RENDEZ_CHECKIN_NOTDONE	=	0x0,
+	IA64_MCA_RENDEZ_CHECKIN_DONE	=	0x1,
+	IA64_MCA_RENDEZ_CHECKIN_INIT	=	0x2,
+	IA64_MCA_RENDEZ_CHECKIN_CONCURRENT_MCA	=	0x3,
+};
+
+/* Information maintained by the MC infrastructure */
+typedef struct ia64_mc_info_s {
+	u64		imi_mca_handler;
+	size_t		imi_mca_handler_size;
+	u64		imi_monarch_init_handler;
+	size_t		imi_monarch_init_handler_size;
+	u64		imi_slave_init_handler;
+	size_t		imi_slave_init_handler_size;
+	u8		imi_rendez_checkin[NR_CPUS];
+
+} ia64_mc_info_t;
+
+/* Handover state from SAL to OS and vice versa, for both MCA and INIT events.
+ * Besides the handover state, it also contains some saved registers from the
+ * time of the event.
+ * Note: mca_asm.S depends on the precise layout of this structure.
+ */
+
+struct ia64_sal_os_state {
+
+	/* SAL to OS */
+	unsigned long		os_gp;			/* GP of the os registered with the SAL, physical */
+	unsigned long		pal_proc;		/* PAL_PROC entry point, physical */
+	unsigned long		sal_proc;		/* SAL_PROC entry point, physical */
+	unsigned long		rv_rc;			/* MCA - Rendezvous state, INIT - reason code */
+	unsigned long		proc_state_param;	/* from R18 */
+	unsigned long		monarch;		/* 1 for a monarch event, 0 for a slave */
+
+	/* common */
+	unsigned long		sal_ra;			/* Return address in SAL, physical */
+	unsigned long		sal_gp;			/* GP of the SAL - physical */
+	struct pal_min_state_area *pal_min_state;	/* from R17.  physical in asm, virtual in C */
+	/* Previous values of IA64_KR(CURRENT) and IA64_KR(CURRENT_STACK).
+	 * Note: if the MCA/INIT recovery code wants to resume to a new context
+	 * then it must change these values to reflect the new kernel stack.
+	 */
+	unsigned long		prev_IA64_KR_CURRENT;	/* previous value of IA64_KR(CURRENT) */
+	unsigned long		prev_IA64_KR_CURRENT_STACK;
+	struct task_struct	*prev_task;		/* previous task, NULL if it is not useful */
+	/* Some interrupt registers are not saved in minstate, pt_regs or
+	 * switch_stack.  Because MCA/INIT can occur when interrupts are
+	 * disabled, we need to save the additional interrupt registers over
+	 * MCA/INIT and resume.
+	 */
+	unsigned long		isr;
+	unsigned long		ifa;
+	unsigned long		itir;
+	unsigned long		iipa;
+	unsigned long		iim;
+	unsigned long		iha;
+
+	/* OS to SAL */
+	unsigned long		os_status;		/* OS status to SAL, enum below */
+	unsigned long		context;		/* 0 if return to same context
+							   1 if return to new context */
+
+	/* I-resources */
+	unsigned long		iip;
+	unsigned long		ipsr;
+	unsigned long		ifs;
+};
+
+enum {
+	IA64_MCA_CORRECTED	=	0x0,	/* Error has been corrected by OS_MCA */
+	IA64_MCA_WARM_BOOT	=	-1,	/* Warm boot of the system need from SAL */
+	IA64_MCA_COLD_BOOT	=	-2,	/* Cold boot of the system need from SAL */
+	IA64_MCA_HALT		=	-3	/* System to be halted by SAL */
+};
+
+enum {
+	IA64_INIT_RESUME	=	0x0,	/* Resume after return from INIT */
+	IA64_INIT_WARM_BOOT	=	-1,	/* Warm boot of the system need from SAL */
+};
+
+enum {
+	IA64_MCA_SAME_CONTEXT	=	0x0,	/* SAL to return to same context */
+	IA64_MCA_NEW_CONTEXT	=	-1	/* SAL to return to new context */
+};
+
+/* Per-CPU MCA state that is too big for normal per-CPU variables.  */
+
+struct ia64_mca_cpu {
+	u64 mca_stack[KERNEL_STACK_SIZE/8];
+	u64 init_stack[KERNEL_STACK_SIZE/8];
+};
+
+/* Array of physical addresses of each CPU's MCA area.  */
+extern unsigned long __per_cpu_mca[NR_CPUS];
+
+extern int cpe_vector;
+extern int ia64_cpe_irq;
+extern void ia64_mca_init(void);
+extern void ia64_mca_irq_init(void);
+extern void ia64_mca_cpu_init(void *);
+extern void ia64_os_mca_dispatch(void);
+extern void ia64_os_mca_dispatch_end(void);
+extern void ia64_mca_ucmc_handler(struct pt_regs *, struct ia64_sal_os_state *);
+extern void ia64_init_handler(struct pt_regs *,
+			      struct switch_stack *,
+			      struct ia64_sal_os_state *);
+extern void ia64_os_init_on_kdump(void);
+extern void ia64_monarch_init_handler(void);
+extern void ia64_slave_init_handler(void);
+extern void ia64_mca_cmc_vector_setup(void);
+extern int  ia64_reg_MCA_extension(int (*fn)(void *, struct ia64_sal_os_state *));
+extern void ia64_unreg_MCA_extension(void);
+extern unsigned long ia64_get_rnat(unsigned long *);
+extern void ia64_set_psr_mc(void);
+extern void ia64_mca_printk(const char * fmt, ...)
+	 __attribute__ ((format (printf, 1, 2)));
+
+struct ia64_mca_notify_die {
+	struct ia64_sal_os_state *sos;
+	int *monarch_cpu;
+	int *data;
+};
+
+DECLARE_PER_CPU(u64, ia64_mca_pal_base);
+
+#else	/* __ASSEMBLY__ */
+
+#define IA64_MCA_CORRECTED	0x0	/* Error has been corrected by OS_MCA */
+#define IA64_MCA_WARM_BOOT	-1	/* Warm boot of the system need from SAL */
+#define IA64_MCA_COLD_BOOT	-2	/* Cold boot of the system need from SAL */
+#define IA64_MCA_HALT		-3	/* System to be halted by SAL */
+
+#define IA64_INIT_RESUME	0x0	/* Resume after return from INIT */
+#define IA64_INIT_WARM_BOOT	-1	/* Warm boot of the system need from SAL */
+
+#define IA64_MCA_SAME_CONTEXT	0x0	/* SAL to return to same context */
+#define IA64_MCA_NEW_CONTEXT	-1	/* SAL to return to new context */
+
+#endif /* !__ASSEMBLY__ */
+#endif /* _ASM_IA64_MCA_H */