^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /* SPDX-License-Identifier: GPL-2.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /* NGbzero.S: Niagara optimized memset/clear_user.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Copyright (C) 2006 David S. Miller (davem@davemloft.net)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) #include <asm/asi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #define EX_ST(x,y) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) 98: x,y; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) .section __ex_table,"a";\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) .align 4; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) .word 98b, __retl_o1_asi;\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) .text; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) .align 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) .text
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) .globl NGmemset
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) .type NGmemset, #function
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) NGmemset: /* %o0=buf, %o1=pat, %o2=len */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) and %o1, 0xff, %o3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) mov %o2, %o1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) sllx %o3, 8, %g1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) or %g1, %o3, %o2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) sllx %o2, 16, %g1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) or %g1, %o2, %o2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) sllx %o2, 32, %g1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) ba,pt %xcc, 1f
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) or %g1, %o2, %o2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) .globl NGbzero
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) .type NGbzero, #function
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) NGbzero:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) clr %o2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 1: brz,pn %o1, NGbzero_return
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) mov %o0, %o3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) /* %o5: saved %asi, restored at NGbzero_done
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) * %g7: store-init %asi to use
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) * %o4: non-store-init %asi to use
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) rd %asi, %o5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) mov ASI_BLK_INIT_QUAD_LDD_P, %g7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) mov ASI_P, %o4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) wr %o4, 0x0, %asi
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) NGbzero_from_clear_user:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) cmp %o1, 15
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) bl,pn %icc, NGbzero_tiny
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) andcc %o0, 0x7, %g1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) be,pt %xcc, 2f
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) mov 8, %g2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) sub %g2, %g1, %g1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) sub %o1, %g1, %o1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 1: EX_ST(stba %o2, [%o0 + 0x00] %asi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) subcc %g1, 1, %g1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) bne,pt %xcc, 1b
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) add %o0, 1, %o0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) 2: cmp %o1, 128
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) bl,pn %icc, NGbzero_medium
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) andcc %o0, (64 - 1), %g1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) be,pt %xcc, NGbzero_pre_loop
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) mov 64, %g2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) sub %g2, %g1, %g1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) sub %o1, %g1, %o1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) 1: EX_ST(stxa %o2, [%o0 + 0x00] %asi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) subcc %g1, 8, %g1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) bne,pt %xcc, 1b
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) add %o0, 8, %o0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) NGbzero_pre_loop:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) wr %g7, 0x0, %asi
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) andn %o1, (64 - 1), %g1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) sub %o1, %g1, %o1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) NGbzero_loop:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) EX_ST(stxa %o2, [%o0 + 0x00] %asi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) EX_ST(stxa %o2, [%o0 + 0x08] %asi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) EX_ST(stxa %o2, [%o0 + 0x10] %asi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) EX_ST(stxa %o2, [%o0 + 0x18] %asi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) EX_ST(stxa %o2, [%o0 + 0x20] %asi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) EX_ST(stxa %o2, [%o0 + 0x28] %asi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) EX_ST(stxa %o2, [%o0 + 0x30] %asi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) EX_ST(stxa %o2, [%o0 + 0x38] %asi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) subcc %g1, 64, %g1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) bne,pt %xcc, NGbzero_loop
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) add %o0, 64, %o0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) membar #Sync
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) wr %o4, 0x0, %asi
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) brz,pn %o1, NGbzero_done
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) NGbzero_medium:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) andncc %o1, 0x7, %g1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) be,pn %xcc, 2f
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) sub %o1, %g1, %o1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) 1: EX_ST(stxa %o2, [%o0 + 0x00] %asi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) subcc %g1, 8, %g1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) bne,pt %xcc, 1b
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) add %o0, 8, %o0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) 2: brz,pt %o1, NGbzero_done
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) nop
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) NGbzero_tiny:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 1: EX_ST(stba %o2, [%o0 + 0x00] %asi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) subcc %o1, 1, %o1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) bne,pt %icc, 1b
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) add %o0, 1, %o0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) /* fallthrough */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) NGbzero_done:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) wr %o5, 0x0, %asi
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) NGbzero_return:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) retl
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) mov %o3, %o0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) .size NGbzero, .-NGbzero
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) .size NGmemset, .-NGmemset
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) .globl NGclear_user
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) .type NGclear_user, #function
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) NGclear_user: /* %o0=buf, %o1=len */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) rd %asi, %o5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) brz,pn %o1, NGbzero_done
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) clr %o3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) cmp %o5, ASI_AIUS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) bne,pn %icc, NGbzero
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) clr %o2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) mov ASI_BLK_INIT_QUAD_LDD_AIUS, %g7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) ba,pt %xcc, NGbzero_from_clear_user
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) mov ASI_AIUS, %o4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) .size NGclear_user, .-NGclear_user
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) #define BRANCH_ALWAYS 0x10680000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) #define NOP 0x01000000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) #define NG_DO_PATCH(OLD, NEW) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) sethi %hi(NEW), %g1; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) or %g1, %lo(NEW), %g1; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) sethi %hi(OLD), %g2; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) or %g2, %lo(OLD), %g2; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) sub %g1, %g2, %g1; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) sethi %hi(BRANCH_ALWAYS), %g3; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) sll %g1, 11, %g1; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) srl %g1, 11 + 2, %g1; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) or %g3, %lo(BRANCH_ALWAYS), %g3; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) or %g3, %g1, %g3; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) stw %g3, [%g2]; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) sethi %hi(NOP), %g3; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) or %g3, %lo(NOP), %g3; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) stw %g3, [%g2 + 0x4]; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) flush %g2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) .globl niagara_patch_bzero
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) .type niagara_patch_bzero,#function
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) niagara_patch_bzero:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) NG_DO_PATCH(memset, NGmemset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) NG_DO_PATCH(__bzero, NGbzero)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) NG_DO_PATCH(__clear_user, NGclear_user)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) NG_DO_PATCH(tsb_init, NGtsb_init)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) retl
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) nop
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) .size niagara_patch_bzero,.-niagara_patch_bzero
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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