/* SPDX-License-Identifier: GPL-2.0 */ /* The registers for cross calls will be: * * DATA 0: [low 32-bits] Address of function to call, jmp to this * [high 32-bits] MMU Context Argument 0, place in %g5 * DATA 1: Address Argument 1, place in %g1 * DATA 2: Address Argument 2, place in %g7 * * With this method we can do most of the cross-call tlb/cache * flushing very quickly. */ .align 32 .globl do_ivec .type do_ivec,#function do_ivec: mov 0x40, %g3 ldxa [%g3 + %g0] ASI_INTR_R, %g3 sethi %hi(KERNBASE), %g4 cmp %g3, %g4 bgeu,pn %xcc, do_ivec_xcall srlx %g3, 32, %g5 stxa %g0, [%g0] ASI_INTR_RECEIVE membar #Sync sethi %hi(ivector_table_pa), %g2 ldx [%g2 + %lo(ivector_table_pa)], %g2 sllx %g3, 4, %g3 add %g2, %g3, %g3 TRAP_LOAD_IRQ_WORK_PA(%g6, %g1) ldx [%g6], %g5 stxa %g5, [%g3] ASI_PHYS_USE_EC stx %g3, [%g6] wr %g0, 1 << PIL_DEVICE_IRQ, %set_softint retry do_ivec_xcall: mov 0x50, %g1 ldxa [%g1 + %g0] ASI_INTR_R, %g1 srl %g3, 0, %g3 mov 0x60, %g7 ldxa [%g7 + %g0] ASI_INTR_R, %g7 stxa %g0, [%g0] ASI_INTR_RECEIVE membar #Sync ba,pt %xcc, 1f nop .align 32 1: jmpl %g3, %g0 nop .size do_ivec,.-do_ivec |