Re: [PATCH] platform/x86: amd-pmc: Correct usage of SMU version

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Hi,

On 1/20/22 18:44, Mario Limonciello wrote:
> Yellow carp has been outputting versions like `1093.24.0`, but this
> is supposed to be 69.24.0. That is the MSB is being interpreted
> incorrectly.
> 
> The MSB is not part of the major version, but has generally been
> treated that way thus far.  It's actually the program, and used to
> distinguish between two programs from a similar family but different
> codebase.
> 
> Link: https://patchwork.freedesktop.org/patch/469993/
> Signed-off-by: Mario Limonciello <mario.limonciello@xxxxxxx>

Thank you for your patch, I've applied this patch to my review-hans 
branch:
https://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86.git/log/?h=review-hans

Note it will show up in my review-hans branch once I've pushed my
local branch there, which might take a while.

Once I've run some tests on this branch the patches there will be
added to the platform-drivers-x86/for-next branch and eventually
will be included in the pdx86 pull-request to Linus for the next
merge-window.

Regards,

Hans


> ---
> This change also has been submitted to GPU driver.
> 
>  drivers/platform/x86/amd-pmc.c | 13 ++++++++-----
>  1 file changed, 8 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/platform/x86/amd-pmc.c b/drivers/platform/x86/amd-pmc.c
> index 06b73d5c928f..c9c4db39ca62 100644
> --- a/drivers/platform/x86/amd-pmc.c
> +++ b/drivers/platform/x86/amd-pmc.c
> @@ -124,9 +124,10 @@ struct amd_pmc_dev {
>  	u32 cpu_id;
>  	u32 active_ips;
>  /* SMU version information */
> -	u16 major;
> -	u16 minor;
> -	u16 rev;
> +	u8 smu_program;
> +	u8 major;
> +	u8 minor;
> +	u8 rev;
>  	struct device *dev;
>  	struct pci_dev *rdev;
>  	struct mutex lock; /* generic mutex lock */
> @@ -180,11 +181,13 @@ static int amd_pmc_get_smu_version(struct amd_pmc_dev *dev)
>  	if (rc)
>  		return rc;
>  
> -	dev->major = (val >> 16) & GENMASK(15, 0);
> +	dev->smu_program = (val >> 24) & GENMASK(7, 0);
> +	dev->major = (val >> 16) & GENMASK(7, 0);
>  	dev->minor = (val >> 8) & GENMASK(7, 0);
>  	dev->rev = (val >> 0) & GENMASK(7, 0);
>  
> -	dev_dbg(dev->dev, "SMU version is %u.%u.%u\n", dev->major, dev->minor, dev->rev);
> +	dev_dbg(dev->dev, "SMU program %u version is %u.%u.%u\n",
> +		dev->smu_program, dev->major, dev->minor, dev->rev);
>  
>  	return 0;
>  }
> 




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