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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 | /* SPDX-License-Identifier: GPL-2.0 */ /* * hibernate_asm.S: Hibernaton support specific for sparc64. * * Copyright (C) 2013 Kirill V Tkhai (tkhai@yandex.ru) */ #include <linux/linkage.h> #include <asm/asm-offsets.h> #include <asm/cpudata.h> #include <asm/page.h> ENTRY(swsusp_arch_suspend) save %sp, -128, %sp save %sp, -128, %sp flushw setuw saved_context, %g3 /* Save window regs */ rdpr %cwp, %g2 stx %g2, [%g3 + SC_REG_CWP] rdpr %wstate, %g2 stx %g2, [%g3 + SC_REG_WSTATE] stx %fp, [%g3 + SC_REG_FP] /* Save state regs */ rdpr %tick, %g2 stx %g2, [%g3 + SC_REG_TICK] rdpr %pstate, %g2 stx %g2, [%g3 + SC_REG_PSTATE] /* Save global regs */ stx %g4, [%g3 + SC_REG_G4] stx %g5, [%g3 + SC_REG_G5] stx %g6, [%g3 + SC_REG_G6] call swsusp_save nop mov %o0, %i0 restore mov %o0, %i0 ret restore ENTRY(swsusp_arch_resume) /* Write restore_pblist to %l0 */ sethi %hi(restore_pblist), %l0 ldx [%l0 + %lo(restore_pblist)], %l0 call __flush_tlb_all nop /* Write PAGE_OFFSET to %g7 */ sethi %hi(PAGE_OFFSET), %g7 ldx [%g7 + %lo(PAGE_OFFSET)], %g7 setuw (PAGE_SIZE-8), %g3 /* Use MMU Bypass */ rd %asi, %g1 wr %g0, ASI_PHYS_USE_EC, %asi ba fill_itlb nop pbe_loop: cmp %l0, %g0 be restore_ctx sub %l0, %g7, %l0 ldxa [%l0 ] %asi, %l1 /* address */ ldxa [%l0 + 8] %asi, %l2 /* orig_address */ /* phys addr */ sub %l1, %g7, %l1 sub %l2, %g7, %l2 mov %g3, %l3 /* PAGE_SIZE-8 */ copy_loop: ldxa [%l1 + %l3] ASI_PHYS_USE_EC, %g2 stxa %g2, [%l2 + %l3] ASI_PHYS_USE_EC cmp %l3, %g0 bne copy_loop sub %l3, 8, %l3 /* next pbe */ ba pbe_loop ldxa [%l0 + 16] %asi, %l0 restore_ctx: setuw saved_context, %g3 /* Restore window regs */ wrpr %g0, 0, %canrestore wrpr %g0, 0, %otherwin wrpr %g0, 6, %cansave wrpr %g0, 0, %cleanwin ldxa [%g3 + SC_REG_CWP] %asi, %g2 wrpr %g2, %cwp ldxa [%g3 + SC_REG_WSTATE] %asi, %g2 wrpr %g2, %wstate ldxa [%g3 + SC_REG_FP] %asi, %fp /* Restore state regs */ ldxa [%g3 + SC_REG_PSTATE] %asi, %g2 wrpr %g2, %pstate ldxa [%g3 + SC_REG_TICK] %asi, %g2 wrpr %g2, %tick /* Restore global regs */ ldxa [%g3 + SC_REG_G4] %asi, %g4 ldxa [%g3 + SC_REG_G5] %asi, %g5 ldxa [%g3 + SC_REG_G6] %asi, %g6 wr %g1, %g0, %asi restore restore wrpr %g0, 14, %pil retl mov %g0, %o0 fill_itlb: ba pbe_loop wrpr %g0, 15, %pil |