cxl/mbox: Add debug messages for enabled mailbox commands

[PATCH v2] cxl/mbox: Add debug messages for enabled mailbox commands

Posted by Robert Richter 2 years, 7 months ago

Only unsupported mailbox commands are reported in debug messages. A
list of enabled commands is useful too. Change debug messages to also
report the opcodes of enabled commands. Esp. if card initialization
fails there is no way to get this information from userland.

On that occasion also add missing trailing newlines.

Signed-off-by: Robert Richter <rrichter@amd.com>
---
v2:
 * Changed message to "Opcode 0x%04x enabled\n". Updated patch
   description accordingly.

 drivers/cxl/core/mbox.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/cxl/core/mbox.c b/drivers/cxl/core/mbox.c
index a48ade466d6a..202d49dd9911 100644
--- a/drivers/cxl/core/mbox.c
+++ b/drivers/cxl/core/mbox.c
@@ -629,11 +629,12 @@ static void cxl_walk_cel(struct cxl_dev_state *cxlds, size_t size, u8 *cel)
 
 		if (!cmd) {
 			dev_dbg(cxlds->dev,
-				"Opcode 0x%04x unsupported by driver", opcode);
+				"Opcode 0x%04x unsupported by driver\n", opcode);
 			continue;
 		}
 
 		set_bit(cmd->info.id, cxlds->enabled_cmds);
+		dev_dbg(cxlds->dev, "Opcode 0x%04x enabled\n", opcode);
 	}
 }
 

base-commit: 1b929c02afd37871d5afb9d498426f83432e71c2
-- 
2.30.2

RE: [PATCH v2] cxl/mbox: Add debug messages for enabled mailbox commands

Posted by Dan Williams 2 years, 7 months ago

Robert Richter wrote:
> Only unsupported mailbox commands are reported in debug messages. A
> list of enabled commands is useful too. Change debug messages to also
> report the opcodes of enabled commands. Esp. if card initialization
> fails there is no way to get this information from userland.
> 
> On that occasion also add missing trailing newlines.
> 
> Signed-off-by: Robert Richter <rrichter@amd.com>
> ---
> v2:
>  * Changed message to "Opcode 0x%04x enabled\n". Updated patch
>    description accordingly.

Thanks Robert, replaced v1 with v2 in my tree. Should show up on
cxl/pending shortly.

Re: [PATCH v2] cxl/mbox: Add debug messages for enabled mailbox commands

Posted by Alison Schofield 2 years, 7 months ago

On Wed, Jan 25, 2023 at 09:57:28AM +0100, Robert Richter wrote:
> Only unsupported mailbox commands are reported in debug messages. A
> list of enabled commands is useful too. Change debug messages to also
> report the opcodes of enabled commands. Esp. if card initialization
> fails there is no way to get this information from userland.
> 
> On that occasion also add missing trailing newlines.
> 
> Signed-off-by: Robert Richter <rrichter@amd.com>
> ---
> v2:
>  * Changed message to "Opcode 0x%04x enabled\n". Updated patch
>    description accordingly.

Thanks Robert,
Reviewed-by: Alison Schofield <alison.schofield@intel.com>

> 
>  drivers/cxl/core/mbox.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/cxl/core/mbox.c b/drivers/cxl/core/mbox.c
> index a48ade466d6a..202d49dd9911 100644
> --- a/drivers/cxl/core/mbox.c
> +++ b/drivers/cxl/core/mbox.c
> @@ -629,11 +629,12 @@ static void cxl_walk_cel(struct cxl_dev_state *cxlds, size_t size, u8 *cel)
>  
>  		if (!cmd) {
>  			dev_dbg(cxlds->dev,
> -				"Opcode 0x%04x unsupported by driver", opcode);
> +				"Opcode 0x%04x unsupported by driver\n", opcode);
>  			continue;
>  		}
>  
>  		set_bit(cmd->info.id, cxlds->enabled_cmds);
> +		dev_dbg(cxlds->dev, "Opcode 0x%04x enabled\n", opcode);
>  	}
>  }
>  
> 
> base-commit: 1b929c02afd37871d5afb9d498426f83432e71c2
> -- 
> 2.30.2
>

Re: [PATCH v2] cxl/mbox: Add debug messages for enabled mailbox commands

Posted by Jonathan Cameron 2 years, 7 months ago

On Wed, 25 Jan 2023 09:57:28 +0100
Robert Richter <rrichter@amd.com> wrote:

> Only unsupported mailbox commands are reported in debug messages. A
> list of enabled commands is useful too. Change debug messages to also
> report the opcodes of enabled commands. Esp. if card initialization
> fails there is no way to get this information from userland.
> 
> On that occasion also add missing trailing newlines.
> 
> Signed-off-by: Robert Richter <rrichter@amd.com>
Fine with change in message
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

> ---
> v2:
>  * Changed message to "Opcode 0x%04x enabled\n". Updated patch
>    description accordingly.
> 
>  drivers/cxl/core/mbox.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/cxl/core/mbox.c b/drivers/cxl/core/mbox.c
> index a48ade466d6a..202d49dd9911 100644
> --- a/drivers/cxl/core/mbox.c
> +++ b/drivers/cxl/core/mbox.c
> @@ -629,11 +629,12 @@ static void cxl_walk_cel(struct cxl_dev_state *cxlds, size_t size, u8 *cel)
>  
>  		if (!cmd) {
>  			dev_dbg(cxlds->dev,
> -				"Opcode 0x%04x unsupported by driver", opcode);
> +				"Opcode 0x%04x unsupported by driver\n", opcode);
>  			continue;
>  		}
>  
>  		set_bit(cmd->info.id, cxlds->enabled_cmds);
> +		dev_dbg(cxlds->dev, "Opcode 0x%04x enabled\n", opcode);
>  	}
>  }
>  
> 
> base-commit: 1b929c02afd37871d5afb9d498426f83432e71c2