From: Matt Redfearn Date: Wed, 7 Sep 2016 09:45:15 +0000 (+0100) Subject: MIPS: pm-cps: Use MIPS standard completion barrier X-Git-Tag: v5.15~12636^2~81 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=90b084b1bc7ebde5379017c29ae617fcc4ccd557;p=platform%2Fkernel%2Flinux-starfive.git MIPS: pm-cps: Use MIPS standard completion barrier SYNC type 0 is defined in the MIPS architecture as a completion barrier where all loads/stores in the pipeline before the sync instruction must complete before any loads/stores subsequent to the sync instruction. In places where we require loads / stores be globally completed, use the standard completion sync stype. Signed-off-by: Matt Redfearn Reviewed-by: Paul Burton Cc: Adam Buchbinder Cc: Masahiro Yamada Cc: Andrew Morton Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/14224/ Signed-off-by: Ralf Baechle --- diff --git a/arch/mips/kernel/pm-cps.c b/arch/mips/kernel/pm-cps.c index d7037fe0..953ff0d 100644 --- a/arch/mips/kernel/pm-cps.c +++ b/arch/mips/kernel/pm-cps.c @@ -315,7 +315,7 @@ static int __init cps_gen_flush_fsb(u32 **pp, struct uasm_label **pl, } /* Barrier ensuring previous cache invalidates are complete */ - uasm_i_sync(pp, stype_memory); + uasm_i_sync(pp, STYPE_SYNC); uasm_i_ehb(pp); /* Check whether the pipeline stalled due to the FSB being full */ @@ -467,7 +467,7 @@ static void * __init cps_gen_entry_code(unsigned cpu, enum cps_pm_state state) Index_Writeback_Inv_D, lbl_flushdcache); /* Barrier ensuring previous cache invalidates are complete */ - uasm_i_sync(&p, stype_memory); + uasm_i_sync(&p, STYPE_SYNC); uasm_i_ehb(&p); /* @@ -480,7 +480,7 @@ static void * __init cps_gen_entry_code(unsigned cpu, enum cps_pm_state state) uasm_i_lw(&p, t0, 0, r_pcohctl); /* Barrier to ensure write to coherence control is complete */ - uasm_i_sync(&p, stype_intervention); + uasm_i_sync(&p, STYPE_SYNC); uasm_i_ehb(&p); /* Disable coherence */ @@ -526,7 +526,7 @@ static void * __init cps_gen_entry_code(unsigned cpu, enum cps_pm_state state) } /* Barrier to ensure write to CPC command is complete */ - uasm_i_sync(&p, stype_memory); + uasm_i_sync(&p, STYPE_SYNC); uasm_i_ehb(&p); } @@ -561,7 +561,7 @@ static void * __init cps_gen_entry_code(unsigned cpu, enum cps_pm_state state) uasm_i_lw(&p, t0, 0, r_pcohctl); /* Barrier to ensure write to coherence control is complete */ - uasm_i_sync(&p, stype_memory); + uasm_i_sync(&p, STYPE_SYNC); uasm_i_ehb(&p); if (coupled_coherence && (state == CPS_PM_NC_WAIT)) {