diff options
Diffstat (limited to 'arch/sparc64/kernel/entry.S')
| -rw-r--r-- | arch/sparc64/kernel/entry.S | 122 |
1 files changed, 105 insertions, 17 deletions
diff --git a/arch/sparc64/kernel/entry.S b/arch/sparc64/kernel/entry.S index a73553ae7e5..906b64ffdb1 100644 --- a/arch/sparc64/kernel/entry.S +++ b/arch/sparc64/kernel/entry.S @@ -50,7 +50,8 @@ do_fpdis: add %g0, %g0, %g0 ba,a,pt %xcc, rtrap_clr_l6 -1: ldub [%g6 + TI_FPSAVED], %g5 +1: TRAP_LOAD_THREAD_REG + ldub [%g6 + TI_FPSAVED], %g5 wr %g0, FPRS_FEF, %fprs andcc %g5, FPRS_FEF, %g0 be,a,pt %icc, 1f @@ -189,6 +190,7 @@ fp_other_bounce: .globl do_fpother_check_fitos .align 32 do_fpother_check_fitos: + TRAP_LOAD_THREAD_REG sethi %hi(fp_other_bounce - 4), %g7 or %g7, %lo(fp_other_bounce - 4), %g7 @@ -353,8 +355,6 @@ do_fptrap_after_fsr: * * With this method we can do most of the cross-call tlb/cache * flushing very quickly. - * - * Current CPU's IRQ worklist table is locked into %g6, don't touch. */ .text .align 32 @@ -378,6 +378,8 @@ do_ivec: sllx %g2, %g4, %g2 sllx %g4, 2, %g4 + TRAP_LOAD_IRQ_WORK + lduw [%g6 + %g4], %g5 /* g5 = irq_work(cpu, pil) */ stw %g5, [%g3 + 0x00] /* bucket->irq_chain = g5 */ stw %g3, [%g6 + %g4] /* irq_work(cpu, pil) = bucket */ @@ -488,9 +490,24 @@ setcc: retl stx %o1, [%o0 + PT_V9_TSTATE] - .globl utrap, utrap_ill -utrap: brz,pn %g1, etrap + .globl utrap_trap +utrap_trap: /* %g3=handler,%g4=level */ + TRAP_LOAD_THREAD_REG + ldx [%g6 + TI_UTRAPS], %g1 + brnz,pt %g1, invoke_utrap nop + + ba,pt %xcc, etrap + rd %pc, %g7 + mov %l4, %o1 + call bad_trap + add %sp, PTREGS_OFF, %o0 + ba,pt %xcc, rtrap + clr %l6 + +invoke_utrap: + sllx %g3, 3, %g3 + ldx [%g1 + %g3], %g1 save %sp, -128, %sp rdpr %tstate, %l6 rdpr %cwp, %l7 @@ -500,17 +517,6 @@ utrap: brz,pn %g1, etrap rdpr %tnpc, %l7 wrpr %g1, 0, %tnpc done -utrap_ill: - call bad_trap - add %sp, PTREGS_OFF, %o0 - ba,pt %xcc, rtrap - clr %l6 - - /* XXX Here is stuff we still need to write... -DaveM XXX */ - .globl netbsd_syscall -netbsd_syscall: - retl - nop /* We need to carefully read the error status, ACK * the errors, prevent recursive traps, and pass the @@ -1001,7 +1007,7 @@ dcpe_icpe_tl1_common: * %g3: scratch * %g4: AFSR * %g5: AFAR - * %g6: current thread ptr + * %g6: unused, will have current thread ptr after etrap * %g7: scratch */ __cheetah_log_error: @@ -1690,3 +1696,85 @@ __flushw_user: restore %g0, %g0, %g0 2: retl nop + + /* Read cpu ID from hardware, return in %g6. + * (callers_pc - 4) is in %g1. Patched at boot time. + * + * Default is spitfire implementation. + * + * The instruction sequence needs to be 5 instructions + * in order to fit the longest implementation, which is + * currently starfire. + */ + .align 32 + .globl __get_cpu_id +__get_cpu_id: + ldxa [%g0] ASI_UPA_CONFIG, %g6 + srlx %g6, 17, %g6 + jmpl %g1 + 0x4, %g0 + and %g6, 0x1f, %g6 + nop + +__get_cpu_id_cheetah_safari: + ldxa [%g0] ASI_SAFARI_CONFIG, %g6 + srlx %g6, 17, %g6 + jmpl %g1 + 0x4, %g0 + and %g6, 0x3ff, %g6 + nop + +__get_cpu_id_cheetah_jbus: + ldxa [%g0] ASI_JBUS_CONFIG, %g6 + srlx %g6, 17, %g6 + jmpl %g1 + 0x4, %g0 + and %g6, 0x1f, %g6 + nop + +__get_cpu_id_starfire: + sethi %hi(0x1fff40000d0 >> 9), %g6 + sllx %g6, 9, %g6 + or %g6, 0xd0, %g6 + jmpl %g1 + 0x4, %g0 + lduwa [%g6] ASI_PHYS_BYPASS_EC_E, %g6 + + .globl per_cpu_patch +per_cpu_patch: + sethi %hi(this_is_starfire), %o0 + lduw [%o0 + %lo(this_is_starfire)], %o1 + sethi %hi(__get_cpu_id_starfire), %o0 + brnz,pn %o1, 10f + or %o0, %lo(__get_cpu_id_starfire), %o0 + sethi %hi(tlb_type), %o0 + lduw [%o0 + %lo(tlb_type)], %o1 + brz,pt %o1, 11f + nop + rdpr %ver, %o0 + srlx %o0, 32, %o0 + sethi %hi(0x003e0016), %o1 + or %o1, %lo(0x003e0016), %o1 + cmp %o0, %o1 + sethi %hi(__get_cpu_id_cheetah_jbus), %o0 + be,pn %icc, 10f + or %o0, %lo(__get_cpu_id_cheetah_jbus), %o0 + sethi %hi(__get_cpu_id_cheetah_safari), %o0 + or %o0, %lo(__get_cpu_id_cheetah_safari), %o0 +10: + sethi %hi(__get_cpu_id), %o1 + or %o1, %lo(__get_cpu_id), %o1 + lduw [%o0 + 0x00], %o2 + stw %o2, [%o1 + 0x00] + flush %o1 + 0x00 + lduw [%o0 + 0x04], %o2 + stw %o2, [%o1 + 0x04] + flush %o1 + 0x04 + lduw [%o0 + 0x08], %o2 + stw %o2, [%o1 + 0x08] + flush %o1 + 0x08 + lduw [%o0 + 0x0c], %o2 + stw %o2, [%o1 + 0x0c] + flush %o1 + 0x0c + lduw [%o0 + 0x10], %o2 + stw %o2, [%o1 + 0x10] + flush %o1 + 0x10 +11: + retl + nop |