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platform/x86/amd/pmf: Differentiate PMF ACPI versions

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For family 1AH, certain PMF features have been enhanced - leading to a
newer APMF (AMD PMF) spec (BIOS and PMF driver interface) called v2.

This information would be fed into the if_version field of the
verify_interface method of the APMF call from the BIOS.

Use this information to store the version number to differentiate
between v1 or v2 and also store the information into the PMF private
data structure, as this information would be required for further code
branching to support the latest silicon.

Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
Co-developed-by: Patil Rajesh Reddy <Patil.Reddy@amd.com>
Signed-off-by: Patil Rajesh Reddy <Patil.Reddy@amd.com>
Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Link: https://lore.kernel.org/r/20240306114415.3267603-2-Shyam-sundar.S-k@amd.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
This commit is contained in:
Shyam Sundar S K 2024-03-06 17:14:09 +05:30 committed by Ilpo Järvinen
parent f62f012f99
commit a33e9e1066
No known key found for this signature in database
GPG Key ID: 59AC4F6153E5CE31
2 changed files with 5 additions and 2 deletions
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6
drivers/platform/x86/amd/pmf/acpi.c
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@ -218,8 +218,10 @@ static int apmf_if_verify_interface(struct amd_pmf_dev *pdev)
return err;
pdev->supported_func = output.supported_functions;
dev_dbg(pdev->dev, "supported functions:0x%x notifications:0x%x\n",
output.supported_functions, output.notification_mask);
dev_dbg(pdev->dev, "supported functions:0x%x notifications:0x%x version:%u\n",
output.supported_functions, output.notification_mask, output.version);
pdev->pmf_if_version = output.version;
return 0;
}

1
drivers/platform/x86/amd/pmf/pmf.h
View File

@ -235,6 +235,7 @@ struct amd_pmf_dev {
u64 policy_addr;
void __iomem *policy_base;
bool smart_pc_enabled;
u16 pmf_if_version;
};
struct apmf_sps_prop_granular {