linux-kernel - Re: [PATCH v3 3/4] tools/testing/cxl: Use named effects for the Command Effect Log

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Date:   Tue, 13 Jun 2023 11:38:00 -0700
From:   Dave Jiang <dave.jiang@...el.com>
To:     Vishal Verma <vishal.l.verma@...el.com>,
        Alison Schofield <alison.schofield@...el.com>,
        Ira Weiny <ira.weiny@...el.com>,
        Ben Widawsky <bwidawsk@...nel.org>,
        Dan Williams <dan.j.williams@...el.com>
CC:     <linux-cxl@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        "Davidlohr Bueso" <dave@...olabs.net>,
        Jonathan Cameron <Jonathan.Cameron@...wei.com>,
        Russ Weight <russell.h.weight@...el.com>
Subject: Re: [PATCH v3 3/4] tools/testing/cxl: Use named effects for the
 Command Effect Log


On 6/11/23 23:55, Vishal Verma wrote:
> As more emulated mailbox commands are added to cxl_test, it is a pain
> point to look up command effect numbers for each effect. Replace the
> bare numbers in the mock driver with an enum that lists all possible
> effects.
>
> Cc: Davidlohr Bueso <dave@...olabs.net>
> Cc: Jonathan Cameron <Jonathan.Cameron@...wei.com>
> Cc: Russ Weight <russell.h.weight@...el.com>
> Cc: Alison Schofield <alison.schofield@...el.com>
> Cc: Ira Weiny <ira.weiny@...el.com>
> Cc: Dave Jiang <dave.jiang@...el.com>
> Cc: Ben Widawsky <bwidawsk@...nel.org>
> Cc: Dan Williams <dan.j.williams@...el.com>
> Suggested-by: Jonathan Cameron <Jonathan.Cameron@...wei.com>
> Reviewed-by: Alison Schofield <alison.schofield@...el.com>
> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@...wei.com>
> Signed-off-by: Vishal Verma <vishal.l.verma@...el.com>

Reviewed-by: Dave Jiang <dave.jiang@...el.com>


> ---
>   tools/testing/cxl/test/mem.c | 32 +++++++++++++++++++++++---------
>   1 file changed, 23 insertions(+), 9 deletions(-)
>
> diff --git a/tools/testing/cxl/test/mem.c b/tools/testing/cxl/test/mem.c
> index 403cd3608772..68668d8df1cd 100644
> --- a/tools/testing/cxl/test/mem.c
> +++ b/tools/testing/cxl/test/mem.c
> @@ -21,42 +21,56 @@
>   
>   static unsigned int poison_inject_dev_max = MOCK_INJECT_DEV_MAX;
>   
> +enum cxl_command_effects {
> +	CONF_CHANGE_COLD_RESET = 0,
> +	CONF_CHANGE_IMMEDIATE,
> +	DATA_CHANGE_IMMEDIATE,
> +	POLICY_CHANGE_IMMEDIATE,
> +	LOG_CHANGE_IMMEDIATE,
> +	SECURITY_CHANGE_IMMEDIATE,
> +	BACKGROUND_OP,
> +	SECONDARY_MBOX_SUPPORTED,
> +};
> +
> +#define CXL_CMD_EFFECT_NONE cpu_to_le16(0)
> +
>   static struct cxl_cel_entry mock_cel[] = {
>   	{
>   		.opcode = cpu_to_le16(CXL_MBOX_OP_GET_SUPPORTED_LOGS),
> -		.effect = cpu_to_le16(0),
> +		.effect = CXL_CMD_EFFECT_NONE,
>   	},
>   	{
>   		.opcode = cpu_to_le16(CXL_MBOX_OP_IDENTIFY),
> -		.effect = cpu_to_le16(0),
> +		.effect = CXL_CMD_EFFECT_NONE,
>   	},
>   	{
>   		.opcode = cpu_to_le16(CXL_MBOX_OP_GET_LSA),
> -		.effect = cpu_to_le16(0),
> +		.effect = CXL_CMD_EFFECT_NONE,
>   	},
>   	{
>   		.opcode = cpu_to_le16(CXL_MBOX_OP_GET_PARTITION_INFO),
> -		.effect = cpu_to_le16(0),
> +		.effect = CXL_CMD_EFFECT_NONE,
>   	},
>   	{
>   		.opcode = cpu_to_le16(CXL_MBOX_OP_SET_LSA),
> -		.effect = cpu_to_le16(EFFECT(1) | EFFECT(2)),
> +		.effect = cpu_to_le16(EFFECT(CONF_CHANGE_IMMEDIATE) |
> +				      EFFECT(DATA_CHANGE_IMMEDIATE)),
>   	},
>   	{
>   		.opcode = cpu_to_le16(CXL_MBOX_OP_GET_HEALTH_INFO),
> -		.effect = cpu_to_le16(0),
> +		.effect = CXL_CMD_EFFECT_NONE,
>   	},
>   	{
>   		.opcode = cpu_to_le16(CXL_MBOX_OP_GET_POISON),
> -		.effect = cpu_to_le16(0),
> +		.effect = CXL_CMD_EFFECT_NONE,
>   	},
>   	{
>   		.opcode = cpu_to_le16(CXL_MBOX_OP_INJECT_POISON),
> -		.effect = cpu_to_le16(EFFECT(2)),
> +		.effect = cpu_to_le16(EFFECT(DATA_CHANGE_IMMEDIATE)),
>   	},
>   	{
>   		.opcode = cpu_to_le16(CXL_MBOX_OP_CLEAR_POISON),
> -		.effect = cpu_to_le16(EFFECT(2)),
> +		.effect = cpu_to_le16(EFFECT(DATA_CHANGE_IMMEDIATE)),
>   	},
>   };
>   
>