| Greg Kroah-Hartman | b244131 | 2017-11-01 15:07:57 +0100 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| David S. Miller | 6eda3a7 | 2008-04-28 00:47:20 -0700 | [diff] [blame] | 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 |
| 15 | do_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 |
| 37 | do_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 |
| 50 | 1: jmpl %g3, %g0 |
| 51 | nop |
| 52 | .size do_ivec,.-do_ivec |