From: Stephen Boyd <swboyd@chromium.org>
To: Elliot Berman <eberman@codeaurora.org>,
agross@kernel.org, bjorn.andersson@linaro.org,
saiprakash.ranjan@codeaurora.org
Cc: Elliot Berman <eberman@codeaurora.org>,
tsoni@codeaurora.org, sidgup@codeaurora.org,
psodagud@codeaurora.org, linux-arm-msm@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 03/18] firmware: qcom_scm-64: Make SMCCC macros less magical
Date: Fri, 15 Nov 2019 14:43:32 -0800 [thread overview]
Message-ID: <5dcf2a15.1c69fb81.b2b08.cc1a@mx.google.com> (raw)
In-Reply-To: <1573593774-12539-4-git-send-email-eberman@codeaurora.org>
Quoting Elliot Berman (2019-11-12 13:22:39)
> Improve understandability of SMCCC macros as they are all functions of
> how many arguments can be shoved in registers and how many SCM arguments
> are supported.
By reversing the logic to build up these defines based on the number of
register arguments instead of subtract them out of number of total
arguments? Might be worth mentioning that.
>
> Signed-off-by: Elliot Berman <eberman@codeaurora.org>
> ---
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
> drivers/firmware/qcom_scm-64.c | 6 +++---
> 1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/firmware/qcom_scm-64.c b/drivers/firmware/qcom_scm-64.c
> index de337b3..badc245 100644
> --- a/drivers/firmware/qcom_scm-64.c
> +++ b/drivers/firmware/qcom_scm-64.c
> @@ -57,9 +57,9 @@ static DEFINE_MUTEX(qcom_scm_lock);
> #define QCOM_SCM_EBUSY_MAX_RETRY 20
>
> #define SMCCC_FUNCNUM(s, c) ((((s) & 0xFF) << 8) | ((c) & 0xFF))
> -#define SMCCC_N_EXT_ARGS 7
> -#define SMCCC_FIRST_EXT_IDX 3
> -#define SMCCC_N_REG_ARGS (MAX_QCOM_SCM_ARGS - SMCCC_N_EXT_ARGS + 1)
> +#define SMCCC_N_REG_ARGS 4
> +#define SMCCC_FIRST_EXT_IDX (SMCCC_N_REG_ARGS - 1)
> +#define SMCCC_N_EXT_ARGS (MAX_QCOM_SCM_ARGS - SMCCC_N_REG_ARGS + 1)
>
> static void __qcom_scm_call_do_quirk(const struct qcom_scm_desc *desc,
next prev parent reply other threads:[~2019-11-15 22:43 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-12 21:22 [PATCH v2 00/18] Restructure, improve target support for qcom_scm driver Elliot Berman
2019-11-12 21:22 ` [PATCH v2 01/18] firmware: qcom_scm: Rename macros and structures Elliot Berman
2019-11-15 23:27 ` Stephen Boyd
2019-11-16 1:19 ` eberman
2019-11-19 21:47 ` Stephen Boyd
2019-11-12 21:22 ` [PATCH v2 02/18] firmware: qcom_scm: Add funcnum IDs Elliot Berman
2019-11-15 23:30 ` Stephen Boyd
2019-11-12 21:22 ` [PATCH v2 03/18] firmware: qcom_scm-64: Make SMCCC macros less magical Elliot Berman
2019-11-15 22:43 ` Stephen Boyd [this message]
2019-11-12 21:22 ` [PATCH v2 04/18] firmware: qcom_scm: Apply consistent naming scheme to command IDs Elliot Berman
2019-11-15 22:45 ` Stephen Boyd
2019-11-12 21:22 ` [PATCH v2 05/18] firmware: qcom_scm: Remove unused qcom_scm_get_version Elliot Berman
2019-11-15 22:45 ` Stephen Boyd
2019-11-12 21:22 ` [PATCH v2 06/18] firmware: qcom_scm-64: Move svc/cmd/owner into qcom_scm_desc Elliot Berman
2019-11-15 23:40 ` Stephen Boyd
2019-11-12 21:22 ` [PATCH v2 07/18] firmware: qcom_scm-64: Add SCM results to descriptor Elliot Berman
2019-11-15 23:42 ` Stephen Boyd
2019-11-12 21:22 ` [PATCH v2 08/18] firmware: qcom_scm-64: Remove qcom_scm_call_do_smccc Elliot Berman
2019-11-15 23:45 ` Stephen Boyd
2019-11-12 21:22 ` [PATCH v2 09/18] firmware: qcom_scm-64: Move SMC register filling to qcom_scm_call_smccc Elliot Berman
2019-11-15 23:57 ` Stephen Boyd
2019-11-12 21:22 ` [PATCH v2 10/18] firmware: qcom_scm-64: Improve SMC convention detection Elliot Berman
2019-11-16 0:21 ` Stephen Boyd
2019-11-16 1:29 ` eberman
2019-11-19 21:49 ` Stephen Boyd
2019-11-12 21:22 ` [PATCH v2 11/18] firmware: qcom_scm-32: Use SMC arch wrappers Elliot Berman
2019-11-16 0:41 ` Stephen Boyd
2019-12-12 19:45 ` Elliot Berman
2019-11-12 21:22 ` [PATCH v2 12/18] firmware: qcom_scm-32: Use qcom_scm_desc in non-atomic calls Elliot Berman
2019-11-19 22:03 ` Stephen Boyd
2019-11-12 21:22 ` [PATCH v2 13/18] firmware: qcom_scm-32: Move SMCCC register filling to qcom_scm_call Elliot Berman
2019-11-19 22:05 ` Stephen Boyd
2019-11-12 21:22 ` [PATCH v2 14/18] firmware: qcom_scm-32: Create common legacy atomic call Elliot Berman
2019-11-19 22:11 ` Stephen Boyd
2019-11-12 21:22 ` [PATCH v2 15/18] firmware: qcom_scm-32: Add device argument to atomic calls Elliot Berman
2019-11-19 22:13 ` Stephen Boyd
2019-11-12 21:22 ` [PATCH v2 16/18] firmware: qcom_scm: Remove thin wrappers Elliot Berman
2019-11-12 21:22 ` [PATCH v2 17/18] firmware: qcom_scm: Dynamically support SMCCC and legacy conventions Elliot Berman
2019-11-12 21:22 ` [PATCH v2 18/18] firmware: qcom_scm: Order functions, definitions by service/command Elliot Berman
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