ivec.S (1208B)
1/* SPDX-License-Identifier: GPL-2.0 */ 2 /* The registers for cross calls will be: 3 * 4 * DATA 0: [low 32-bits] Address of function to call, jmp to this 5 * [high 32-bits] MMU Context Argument 0, place in %g5 6 * DATA 1: Address Argument 1, place in %g1 7 * DATA 2: Address Argument 2, place in %g7 8 * 9 * With this method we can do most of the cross-call tlb/cache 10 * flushing very quickly. 11 */ 12 .align 32 13 .globl do_ivec 14 .type do_ivec,#function 15do_ivec: 16 mov 0x40, %g3 17 ldxa [%g3 + %g0] ASI_INTR_R, %g3 18 sethi %hi(KERNBASE), %g4 19 cmp %g3, %g4 20 bgeu,pn %xcc, do_ivec_xcall 21 srlx %g3, 32, %g5 22 stxa %g0, [%g0] ASI_INTR_RECEIVE 23 membar #Sync 24 25 sethi %hi(ivector_table_pa), %g2 26 ldx [%g2 + %lo(ivector_table_pa)], %g2 27 sllx %g3, 4, %g3 28 add %g2, %g3, %g3 29 30 TRAP_LOAD_IRQ_WORK_PA(%g6, %g1) 31 32 ldx [%g6], %g5 33 stxa %g5, [%g3] ASI_PHYS_USE_EC 34 stx %g3, [%g6] 35 wr %g0, 1 << PIL_DEVICE_IRQ, %set_softint 36 retry 37do_ivec_xcall: 38 mov 0x50, %g1 39 ldxa [%g1 + %g0] ASI_INTR_R, %g1 40 srl %g3, 0, %g3 41 42 mov 0x60, %g7 43 ldxa [%g7 + %g0] ASI_INTR_R, %g7 44 stxa %g0, [%g0] ASI_INTR_RECEIVE 45 membar #Sync 46 ba,pt %xcc, 1f 47 nop 48 49 .align 32 501: jmpl %g3, %g0 51 nop 52 .size do_ivec,.-do_ivec