diff options
| author | Kaushal Kumar <kaushalk@codeaurora.org> | 2018-03-27 18:08:32 +0530 |
|---|---|---|
| committer | Gerrit - the friendly Code Review server <code-review@localhost> | 2019-11-10 22:19:25 -0800 |
| commit | 9fbd3acbf7d7c4d295f1f9fae508c097ba1dcc9c (patch) | |
| tree | cb28534a85db9026ca52604145c5c10307ba34d3 /include/soc | |
| parent | b6cce1559ba3fe6c7402863a88c0d446859d7d92 (diff) | |
soc: qcom: scm: Add a noretry variant for scm_call2
scm_call2 can block scm calls up to 2s due to its
retry mechanism whenever the secure firmware is
busy waiting for certain processing by the client
who in turn is waiting upon its scm call to either
complete or return with failure.
Upon early return, client can process the pending
requests to free up secure firmware and unblock
processing of all pending scm calls. Add a noretry
variant for scm_call2 which can be used by clients
who do not intend to wait for 2s for return status.
Change-Id: I1f0849464a64c32a4de4510fa5787b0ab328725c
Signed-off-by: Kaushal Kumar <kaushalk@codeaurora.org>
Diffstat (limited to 'include/soc')
| -rw-r--r-- | include/soc/qcom/scm.h | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/include/soc/qcom/scm.h b/include/soc/qcom/scm.h index f0a3124dae00..e741d540a8d6 100644 --- a/include/soc/qcom/scm.h +++ b/include/soc/qcom/scm.h @@ -1,4 +1,4 @@ -/* Copyright (c) 2010-2017, The Linux Foundation. All rights reserved. +/* Copyright (c) 2010-2018, The Linux Foundation. All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 and @@ -101,6 +101,8 @@ extern int scm_call(u32 svc_id, u32 cmd_id, const void *cmd_buf, size_t cmd_len, extern int scm_call2(u32 cmd_id, struct scm_desc *desc); +extern int scm_call2_noretry(u32 cmd_id, struct scm_desc *desc); + extern int scm_call2_atomic(u32 cmd_id, struct scm_desc *desc); extern int scm_call_noalloc(u32 svc_id, u32 cmd_id, const void *cmd_buf, @@ -150,6 +152,11 @@ static inline int scm_call2(u32 cmd_id, struct scm_desc *desc) return 0; } +static inline int scm_call2_noretry(u32 cmd_id, struct scm_desc *desc) +{ + return 0; +} + static inline int scm_call2_atomic(u32 cmd_id, struct scm_desc *desc) { return 0; |