arch/sparc/kernel/entry.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _ENTRY_H
   3 #define _ENTRY_H
   4
   5 #include <linux/kernel.h>
   6 #include <linux/types.h>
   7 #include <linux/init.h>
   8
   9 /* irq */
  10 void handler_irq(int irq, struct pt_regs *regs);
  11
  12 #ifdef CONFIG_SPARC32
  13 /* traps */
  14 void do_hw_interrupt(struct pt_regs *regs, unsigned long type);
  15 void do_illegal_instruction(struct pt_regs *regs, unsigned long pc,
  16                             unsigned long npc, unsigned long psr);
  17
  18 void do_priv_instruction(struct pt_regs *regs, unsigned long pc,
  19                          unsigned long npc, unsigned long psr);
  20 void do_memaccess_unaligned(struct pt_regs *regs, unsigned long pc,
  21                             unsigned long npc, unsigned long psr);
  22 void do_fpd_trap(struct pt_regs *regs, unsigned long pc,
  23                  unsigned long npc, unsigned long psr);
  24 void do_fpe_trap(struct pt_regs *regs, unsigned long pc,
  25                  unsigned long npc, unsigned long psr);
  26 void handle_tag_overflow(struct pt_regs *regs, unsigned long pc,
  27                          unsigned long npc, unsigned long psr);
  28 void handle_watchpoint(struct pt_regs *regs, unsigned long pc,
  29                        unsigned long npc, unsigned long psr);
  30 void handle_reg_access(struct pt_regs *regs, unsigned long pc,
  31                        unsigned long npc, unsigned long psr);
  32 void handle_cp_disabled(struct pt_regs *regs, unsigned long pc,
  33                         unsigned long npc, unsigned long psr);
  34 void handle_cp_exception(struct pt_regs *regs, unsigned long pc,
  35                          unsigned long npc, unsigned long psr);
  36
  37
  38
  39 /* entry.S */
  40 void fpsave(unsigned long *fpregs, unsigned long *fsr,
  41             void *fpqueue, unsigned long *fpqdepth);
  42 void fpload(unsigned long *fpregs, unsigned long *fsr);
  43
  44 #else /* CONFIG_SPARC32 */
  45
  46 #include <asm/trap_block.h>
  47
  48 struct popc_3insn_patch_entry {
  49         unsigned int    addr;
  50         unsigned int    insns[3];
  51 };
  52 extern struct popc_3insn_patch_entry __popc_3insn_patch,
  53         __popc_3insn_patch_end;
  54
  55 struct popc_6insn_patch_entry {
  56         unsigned int    addr;
  57         unsigned int    insns[6];
  58 };
  59 extern struct popc_6insn_patch_entry __popc_6insn_patch,
  60         __popc_6insn_patch_end;
  61
  62 struct pause_patch_entry {
  63         unsigned int    addr;
  64         unsigned int    insns[3];
  65 };
  66 extern struct pause_patch_entry __pause_3insn_patch,
  67         __pause_3insn_patch_end;
  68
  69 void sun4v_patch_1insn_range(struct sun4v_1insn_patch_entry *,
  70                              struct sun4v_1insn_patch_entry *);
  71 void sun4v_patch_2insn_range(struct sun4v_2insn_patch_entry *,
  72                              struct sun4v_2insn_patch_entry *);
  73 void sun_m7_patch_2insn_range(struct sun4v_2insn_patch_entry *,
  74                              struct sun4v_2insn_patch_entry *);
  75 extern unsigned int dcache_parity_tl1_occurred;
  76 extern unsigned int icache_parity_tl1_occurred;
  77
  78 asmlinkage void sparc_breakpoint(struct pt_regs *regs);
  79 void timer_interrupt(int irq, struct pt_regs *regs);
  80
  81 void do_notify_resume(struct pt_regs *regs,
  82                       unsigned long orig_i0,
  83                       unsigned long thread_info_flags);
  84
  85 asmlinkage int syscall_trace_enter(struct pt_regs *regs);
  86 asmlinkage void syscall_trace_leave(struct pt_regs *regs);
  87
  88 void bad_trap_tl1(struct pt_regs *regs, long lvl);
  89
  90 void do_fpieee(struct pt_regs *regs);
  91 void do_fpother(struct pt_regs *regs);
  92 void do_tof(struct pt_regs *regs);
  93 void do_div0(struct pt_regs *regs);
  94 void do_illegal_instruction(struct pt_regs *regs);
  95 void mem_address_unaligned(struct pt_regs *regs,
  96                            unsigned long sfar,
  97                            unsigned long sfsr);
  98 void sun4v_do_mna(struct pt_regs *regs,
  99                   unsigned long addr,
 100                   unsigned long type_ctx);
 101 void do_privop(struct pt_regs *regs);
 102 void do_privact(struct pt_regs *regs);
 103 void do_cee(struct pt_regs *regs);
 104 void do_div0_tl1(struct pt_regs *regs);
 105 void do_fpieee_tl1(struct pt_regs *regs);
 106 void do_fpother_tl1(struct pt_regs *regs);
 107 void do_ill_tl1(struct pt_regs *regs);
 108 void do_irq_tl1(struct pt_regs *regs);
 109 void do_lddfmna_tl1(struct pt_regs *regs);
 110 void do_stdfmna_tl1(struct pt_regs *regs);
 111 void do_paw(struct pt_regs *regs);
 112 void do_paw_tl1(struct pt_regs *regs);
 113 void do_vaw(struct pt_regs *regs);
 114 void do_vaw_tl1(struct pt_regs *regs);
 115 void do_tof_tl1(struct pt_regs *regs);
 116 void do_getpsr(struct pt_regs *regs);
 117
 118 void spitfire_insn_access_exception(struct pt_regs *regs,
 119                                     unsigned long sfsr,
 120                                     unsigned long sfar);
 121 void spitfire_insn_access_exception_tl1(struct pt_regs *regs,
 122                                         unsigned long sfsr,
 123                                         unsigned long sfar);
 124 void spitfire_data_access_exception(struct pt_regs *regs,
 125                                     unsigned long sfsr,
 126                                     unsigned long sfar);
 127 void spitfire_data_access_exception_tl1(struct pt_regs *regs,
 128                                         unsigned long sfsr,
 129                                         unsigned long sfar);
 130 void spitfire_access_error(struct pt_regs *regs,
 131                            unsigned long status_encoded,
 132                            unsigned long afar);
 133
 134 void cheetah_fecc_handler(struct pt_regs *regs,
 135                           unsigned long afsr,
 136                           unsigned long afar);
 137 void cheetah_cee_handler(struct pt_regs *regs,
 138                          unsigned long afsr,
 139                          unsigned long afar);
 140 void cheetah_deferred_handler(struct pt_regs *regs,
 141                               unsigned long afsr,
 142                               unsigned long afar);
 143 void cheetah_plus_parity_error(int type, struct pt_regs *regs);
 144
 145 void sun4v_insn_access_exception(struct pt_regs *regs,
 146                                  unsigned long addr,
 147                                  unsigned long type_ctx);
 148 void sun4v_insn_access_exception_tl1(struct pt_regs *regs,
 149                                      unsigned long addr,
 150                                      unsigned long type_ctx);
 151 void sun4v_data_access_exception(struct pt_regs *regs,
 152                                  unsigned long addr,
 153                                  unsigned long type_ctx);
 154 void sun4v_data_access_exception_tl1(struct pt_regs *regs,
 155                                      unsigned long addr,
 156                                      unsigned long type_ctx);
 157 void sun4v_resum_error(struct pt_regs *regs,
 158                        unsigned long offset);
 159 void sun4v_resum_overflow(struct pt_regs *regs);
 160 void sun4v_nonresum_error(struct pt_regs *regs,
 161                           unsigned long offset);
 162 void sun4v_nonresum_overflow(struct pt_regs *regs);
 163
 164 extern unsigned long sun4v_err_itlb_vaddr;
 165 extern unsigned long sun4v_err_itlb_ctx;
 166 extern unsigned long sun4v_err_itlb_pte;
 167 extern unsigned long sun4v_err_itlb_error;
 168
 169 void sun4v_itlb_error_report(struct pt_regs *regs, int tl);
 170
 171 extern unsigned long sun4v_err_dtlb_vaddr;
 172 extern unsigned long sun4v_err_dtlb_ctx;
 173 extern unsigned long sun4v_err_dtlb_pte;
 174 extern unsigned long sun4v_err_dtlb_error;
 175
 176 void sun4v_dtlb_error_report(struct pt_regs *regs, int tl);
 177 void hypervisor_tlbop_error(unsigned long err,
 178                             unsigned long op);
 179 void hypervisor_tlbop_error_xcall(unsigned long err,
 180                                   unsigned long op);
 181
 182 /* WARNING: The error trap handlers in assembly know the precise
 183  *          layout of the following structure.
 184  *
 185  * C-level handlers in traps.c use this information to log the
 186  * error and then determine how to recover (if possible).
 187  */
 188 struct cheetah_err_info {
 189 /*0x00*/u64 afsr;
 190 /*0x08*/u64 afar;
 191
 192         /* D-cache state */
 193 /*0x10*/u64 dcache_data[4];     /* The actual data      */
 194 /*0x30*/u64 dcache_index;       /* D-cache index        */
 195 /*0x38*/u64 dcache_tag;         /* D-cache tag/valid    */
 196 /*0x40*/u64 dcache_utag;        /* D-cache microtag     */
 197 /*0x48*/u64 dcache_stag;        /* D-cache snooptag     */
 198
 199         /* I-cache state */
 200 /*0x50*/u64 icache_data[8];     /* The actual insns + predecode */
 201 /*0x90*/u64 icache_index;       /* I-cache index        */
 202 /*0x98*/u64 icache_tag;         /* I-cache phys tag     */
 203 /*0xa0*/u64 icache_utag;        /* I-cache microtag     */
 204 /*0xa8*/u64 icache_stag;        /* I-cache snooptag     */
 205 /*0xb0*/u64 icache_upper;       /* I-cache upper-tag    */
 206 /*0xb8*/u64 icache_lower;       /* I-cache lower-tag    */
 207
 208         /* E-cache state */
 209 /*0xc0*/u64 ecache_data[4];     /* 32 bytes from staging registers */
 210 /*0xe0*/u64 ecache_index;       /* E-cache index        */
 211 /*0xe8*/u64 ecache_tag;         /* E-cache tag/state    */
 212
 213 /*0xf0*/u64 __pad[32 - 30];
 214 };
 215 #define CHAFSR_INVALID          ((u64)-1L)
 216
 217 /* This is allocated at boot time based upon the largest hardware
 218  * cpu ID in the system.  We allocate two entries per cpu, one for
 219  * TL==0 logging and one for TL >= 1 logging.
 220  */
 221 extern struct cheetah_err_info *cheetah_error_log;
 222
 223 /* UPA nodes send interrupt packet to UltraSparc with first data reg
 224  * value low 5 (7 on Starfire) bits holding the IRQ identifier being
 225  * delivered.  We must translate this into a non-vector IRQ so we can
 226  * set the softint on this cpu.
 227  *
 228  * To make processing these packets efficient and race free we use
 229  * an array of irq buckets below.  The interrupt vector handler in
 230  * entry.S feeds incoming packets into per-cpu pil-indexed lists.
 231  *
 232  * If you make changes to ino_bucket, please update hand coded assembler
 233  * of the vectored interrupt trap handler(s) in entry.S and sun4v_ivec.S
 234  */
 235 struct ino_bucket {
 236 /*0x00*/unsigned long __irq_chain_pa;
 237
 238         /* Interrupt number assigned to this INO.  */
 239 /*0x08*/unsigned int __irq;
 240 /*0x0c*/unsigned int __pad;
 241 };
 242
 243 extern struct ino_bucket *ivector_table;
 244 extern unsigned long ivector_table_pa;
 245
 246 void init_irqwork_curcpu(void);
 247 void sun4v_register_mondo_queues(int this_cpu);
 248
 249 #endif /* CONFIG_SPARC32 */
 250 #endif /* _ENTRY_H */