v4.19.13 snapshot.
diff --git a/arch/sparc/kernel/entry.h b/arch/sparc/kernel/entry.h
new file mode 100644
index 0000000..c746c0f
--- /dev/null
+++ b/arch/sparc/kernel/entry.h
@@ -0,0 +1,253 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _ENTRY_H
+#define _ENTRY_H
+
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/init.h>
+
+/* irq */
+void handler_irq(int irq, struct pt_regs *regs);
+
+#ifdef CONFIG_SPARC32
+/* traps */
+void do_hw_interrupt(struct pt_regs *regs, unsigned long type);
+void do_illegal_instruction(struct pt_regs *regs, unsigned long pc,
+ unsigned long npc, unsigned long psr);
+
+void do_priv_instruction(struct pt_regs *regs, unsigned long pc,
+ unsigned long npc, unsigned long psr);
+void do_memaccess_unaligned(struct pt_regs *regs, unsigned long pc,
+ unsigned long npc, unsigned long psr);
+void do_fpd_trap(struct pt_regs *regs, unsigned long pc,
+ unsigned long npc, unsigned long psr);
+void do_fpe_trap(struct pt_regs *regs, unsigned long pc,
+ unsigned long npc, unsigned long psr);
+void handle_tag_overflow(struct pt_regs *regs, unsigned long pc,
+ unsigned long npc, unsigned long psr);
+void handle_watchpoint(struct pt_regs *regs, unsigned long pc,
+ unsigned long npc, unsigned long psr);
+void handle_reg_access(struct pt_regs *regs, unsigned long pc,
+ unsigned long npc, unsigned long psr);
+void handle_cp_disabled(struct pt_regs *regs, unsigned long pc,
+ unsigned long npc, unsigned long psr);
+void handle_cp_exception(struct pt_regs *regs, unsigned long pc,
+ unsigned long npc, unsigned long psr);
+
+
+
+/* entry.S */
+void fpsave(unsigned long *fpregs, unsigned long *fsr,
+ void *fpqueue, unsigned long *fpqdepth);
+void fpload(unsigned long *fpregs, unsigned long *fsr);
+
+#else /* CONFIG_SPARC32 */
+
+#include <asm/trap_block.h>
+
+struct popc_3insn_patch_entry {
+ unsigned int addr;
+ unsigned int insns[3];
+};
+extern struct popc_3insn_patch_entry __popc_3insn_patch,
+ __popc_3insn_patch_end;
+
+struct popc_6insn_patch_entry {
+ unsigned int addr;
+ unsigned int insns[6];
+};
+extern struct popc_6insn_patch_entry __popc_6insn_patch,
+ __popc_6insn_patch_end;
+
+struct pause_patch_entry {
+ unsigned int addr;
+ unsigned int insns[3];
+};
+extern struct pause_patch_entry __pause_3insn_patch,
+ __pause_3insn_patch_end;
+
+void sun4v_patch_1insn_range(struct sun4v_1insn_patch_entry *,
+ struct sun4v_1insn_patch_entry *);
+void sun4v_patch_2insn_range(struct sun4v_2insn_patch_entry *,
+ struct sun4v_2insn_patch_entry *);
+void sun_m7_patch_2insn_range(struct sun4v_2insn_patch_entry *,
+ struct sun4v_2insn_patch_entry *);
+extern unsigned int dcache_parity_tl1_occurred;
+extern unsigned int icache_parity_tl1_occurred;
+
+asmlinkage void sparc_breakpoint(struct pt_regs *regs);
+void timer_interrupt(int irq, struct pt_regs *regs);
+
+void do_notify_resume(struct pt_regs *regs,
+ unsigned long orig_i0,
+ unsigned long thread_info_flags);
+
+asmlinkage int syscall_trace_enter(struct pt_regs *regs);
+asmlinkage void syscall_trace_leave(struct pt_regs *regs);
+
+void bad_trap_tl1(struct pt_regs *regs, long lvl);
+
+void do_fpieee(struct pt_regs *regs);
+void do_fpother(struct pt_regs *regs);
+void do_tof(struct pt_regs *regs);
+void do_div0(struct pt_regs *regs);
+void do_illegal_instruction(struct pt_regs *regs);
+void mem_address_unaligned(struct pt_regs *regs,
+ unsigned long sfar,
+ unsigned long sfsr);
+void sun4v_do_mna(struct pt_regs *regs,
+ unsigned long addr,
+ unsigned long type_ctx);
+void do_privop(struct pt_regs *regs);
+void do_privact(struct pt_regs *regs);
+void do_cee(struct pt_regs *regs);
+void do_div0_tl1(struct pt_regs *regs);
+void do_fpieee_tl1(struct pt_regs *regs);
+void do_fpother_tl1(struct pt_regs *regs);
+void do_ill_tl1(struct pt_regs *regs);
+void do_irq_tl1(struct pt_regs *regs);
+void do_lddfmna_tl1(struct pt_regs *regs);
+void do_stdfmna_tl1(struct pt_regs *regs);
+void do_paw(struct pt_regs *regs);
+void do_paw_tl1(struct pt_regs *regs);
+void do_vaw(struct pt_regs *regs);
+void do_vaw_tl1(struct pt_regs *regs);
+void do_tof_tl1(struct pt_regs *regs);
+void do_getpsr(struct pt_regs *regs);
+
+void spitfire_insn_access_exception(struct pt_regs *regs,
+ unsigned long sfsr,
+ unsigned long sfar);
+void spitfire_insn_access_exception_tl1(struct pt_regs *regs,
+ unsigned long sfsr,
+ unsigned long sfar);
+void spitfire_data_access_exception(struct pt_regs *regs,
+ unsigned long sfsr,
+ unsigned long sfar);
+void spitfire_data_access_exception_tl1(struct pt_regs *regs,
+ unsigned long sfsr,
+ unsigned long sfar);
+void spitfire_access_error(struct pt_regs *regs,
+ unsigned long status_encoded,
+ unsigned long afar);
+
+void cheetah_fecc_handler(struct pt_regs *regs,
+ unsigned long afsr,
+ unsigned long afar);
+void cheetah_cee_handler(struct pt_regs *regs,
+ unsigned long afsr,
+ unsigned long afar);
+void cheetah_deferred_handler(struct pt_regs *regs,
+ unsigned long afsr,
+ unsigned long afar);
+void cheetah_plus_parity_error(int type, struct pt_regs *regs);
+
+void sun4v_insn_access_exception(struct pt_regs *regs,
+ unsigned long addr,
+ unsigned long type_ctx);
+void sun4v_insn_access_exception_tl1(struct pt_regs *regs,
+ unsigned long addr,
+ unsigned long type_ctx);
+void sun4v_data_access_exception(struct pt_regs *regs,
+ unsigned long addr,
+ unsigned long type_ctx);
+void sun4v_data_access_exception_tl1(struct pt_regs *regs,
+ unsigned long addr,
+ unsigned long type_ctx);
+void sun4v_resum_error(struct pt_regs *regs,
+ unsigned long offset);
+void sun4v_resum_overflow(struct pt_regs *regs);
+void sun4v_nonresum_error(struct pt_regs *regs,
+ unsigned long offset);
+void sun4v_nonresum_overflow(struct pt_regs *regs);
+void sun4v_mem_corrupt_detect_precise(struct pt_regs *regs,
+ unsigned long addr,
+ unsigned long context);
+
+extern unsigned long sun4v_err_itlb_vaddr;
+extern unsigned long sun4v_err_itlb_ctx;
+extern unsigned long sun4v_err_itlb_pte;
+extern unsigned long sun4v_err_itlb_error;
+
+void sun4v_itlb_error_report(struct pt_regs *regs, int tl);
+
+extern unsigned long sun4v_err_dtlb_vaddr;
+extern unsigned long sun4v_err_dtlb_ctx;
+extern unsigned long sun4v_err_dtlb_pte;
+extern unsigned long sun4v_err_dtlb_error;
+
+void sun4v_dtlb_error_report(struct pt_regs *regs, int tl);
+void hypervisor_tlbop_error(unsigned long err,
+ unsigned long op);
+void hypervisor_tlbop_error_xcall(unsigned long err,
+ unsigned long op);
+
+/* WARNING: The error trap handlers in assembly know the precise
+ * layout of the following structure.
+ *
+ * C-level handlers in traps.c use this information to log the
+ * error and then determine how to recover (if possible).
+ */
+struct cheetah_err_info {
+/*0x00*/u64 afsr;
+/*0x08*/u64 afar;
+
+ /* D-cache state */
+/*0x10*/u64 dcache_data[4]; /* The actual data */
+/*0x30*/u64 dcache_index; /* D-cache index */
+/*0x38*/u64 dcache_tag; /* D-cache tag/valid */
+/*0x40*/u64 dcache_utag; /* D-cache microtag */
+/*0x48*/u64 dcache_stag; /* D-cache snooptag */
+
+ /* I-cache state */
+/*0x50*/u64 icache_data[8]; /* The actual insns + predecode */
+/*0x90*/u64 icache_index; /* I-cache index */
+/*0x98*/u64 icache_tag; /* I-cache phys tag */
+/*0xa0*/u64 icache_utag; /* I-cache microtag */
+/*0xa8*/u64 icache_stag; /* I-cache snooptag */
+/*0xb0*/u64 icache_upper; /* I-cache upper-tag */
+/*0xb8*/u64 icache_lower; /* I-cache lower-tag */
+
+ /* E-cache state */
+/*0xc0*/u64 ecache_data[4]; /* 32 bytes from staging registers */
+/*0xe0*/u64 ecache_index; /* E-cache index */
+/*0xe8*/u64 ecache_tag; /* E-cache tag/state */
+
+/*0xf0*/u64 __pad[32 - 30];
+};
+#define CHAFSR_INVALID ((u64)-1L)
+
+/* This is allocated at boot time based upon the largest hardware
+ * cpu ID in the system. We allocate two entries per cpu, one for
+ * TL==0 logging and one for TL >= 1 logging.
+ */
+extern struct cheetah_err_info *cheetah_error_log;
+
+/* UPA nodes send interrupt packet to UltraSparc with first data reg
+ * value low 5 (7 on Starfire) bits holding the IRQ identifier being
+ * delivered. We must translate this into a non-vector IRQ so we can
+ * set the softint on this cpu.
+ *
+ * To make processing these packets efficient and race free we use
+ * an array of irq buckets below. The interrupt vector handler in
+ * entry.S feeds incoming packets into per-cpu pil-indexed lists.
+ *
+ * If you make changes to ino_bucket, please update hand coded assembler
+ * of the vectored interrupt trap handler(s) in entry.S and sun4v_ivec.S
+ */
+struct ino_bucket {
+/*0x00*/unsigned long __irq_chain_pa;
+
+ /* Interrupt number assigned to this INO. */
+/*0x08*/unsigned int __irq;
+/*0x0c*/unsigned int __pad;
+};
+
+extern struct ino_bucket *ivector_table;
+extern unsigned long ivector_table_pa;
+
+void init_irqwork_curcpu(void);
+void sun4v_register_mondo_queues(int this_cpu);
+
+#endif /* CONFIG_SPARC32 */
+#endif /* _ENTRY_H */