From: Matt Redfearn <matt.redfearn@imgtec.com>
To: Ralf Baechle <ralf@linux-mips.org>
Cc: <linux-mips@linux-mips.org>,
Matt Redfearn <matt.redfearn@imgtec.com>,
Adam Buchbinder <adam.buchbinder@gmail.com>,
Masahiro Yamada <yamada.masahiro@socionext.com>,
<linux-kernel@vger.kernel.org>,
Paul Burton <paul.burton@imgtec.com>,
Markos Chandras <markos.chandras@imgtec.com>,
Andrew Morton <akpm@linux-foundation.org>
Subject: [PATCH v2 07/12] MIPS: pm-cps: Use MIPS standard completion barrier
Date: Wed, 7 Sep 2016 10:45:15 +0100 [thread overview]
Message-ID: <1473241520-14917-8-git-send-email-matt.redfearn@imgtec.com> (raw)
In-Reply-To: <1473241520-14917-1-git-send-email-matt.redfearn@imgtec.com>
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 <matt.redfearn@imgtec.com>
Reviewed-by: Paul Burton <paul.burton@imgtec.com>
---
Changes in v2: None
arch/mips/kernel/pm-cps.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/arch/mips/kernel/pm-cps.c b/arch/mips/kernel/pm-cps.c
index d7037fe00d1c..953ff0db9061 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)) {
--
2.7.4
next prev parent reply other threads:[~2016-09-07 9:47 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-07 9:45 [PATCH v2 00/12] MIPS CPC fixup and CPU Idle for MIPSr6 CPUs Matt Redfearn
2016-09-07 9:45 ` [PATCH v2 01/12] MIPS: CPC: Convert bare 'unsigned' to 'unsigned int' Matt Redfearn
2016-09-07 9:45 ` [PATCH v2 02/12] MIPS: CPC: Avoid lock when MIPS CM >= 3 is present Matt Redfearn
2016-09-07 9:45 ` [PATCH v2 03/12] MIPS: pm-cps: Change FSB workaround to CPU blacklist Matt Redfearn
2016-09-07 9:45 ` [PATCH v2 04/12] MIPS: pm-cps: Update comments on barrier instructions Matt Redfearn
2016-09-07 9:45 ` [PATCH v2 05/12] MIPS: Barrier: Add definitions of SYNC stype values Matt Redfearn
2016-09-07 11:24 ` Peter Zijlstra
2016-09-07 11:31 ` Peter Zijlstra
2016-09-07 9:45 ` [PATCH v2 06/12] MIPS: pm-cps: Use MIPS standard lightweight ordering barrier Matt Redfearn
2016-09-07 9:45 ` Matt Redfearn [this message]
2016-09-07 9:45 ` [PATCH v2 08/12] MIPS: pm-cps: Remove selection of sync types Matt Redfearn
2016-09-07 9:45 ` [PATCH v2 09/12] MIPS: pm-cps: Add MIPSr6 CPU support Matt Redfearn
2016-09-07 9:45 ` [PATCH v2 10/12] MIPS: pm-cps: Support CM3 changes to Coherence Enable Register Matt Redfearn
2016-09-07 9:45 ` [PATCH v2 11/12] MIPS: SMP: Wrap call to mips_cpc_lock_other in mips_cm_lock_other Matt Redfearn
2016-09-07 9:45 ` [PATCH v2 12/12] cpuidle: cpuidle-cps: Enable use with MIPSr6 CPUs Matt Redfearn
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1473241520-14917-8-git-send-email-matt.redfearn@imgtec.com \
--to=matt.redfearn@imgtec.com \
--cc=adam.buchbinder@gmail.com \
--cc=akpm@linux-foundation.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mips@linux-mips.org \
--cc=markos.chandras@imgtec.com \
--cc=paul.burton@imgtec.com \
--cc=ralf@linux-mips.org \
--cc=yamada.masahiro@socionext.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®