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| author | Shyam Sundar S K <Shyam-sundar.S-k@amd.com> | 2022-08-02 18:11:40 +0300 |
|---|---|---|
| committer | Hans de Goede <hdegoede@redhat.com> | 2022-08-15 14:23:37 +0300 |
| commit | 5eb315ebf47b605cb9364da40a9363ad4065014b (patch) | |
| tree | 5753a33e2653b29934637b19dd43eb8282467340 /drivers/platform/x86/amd/pmf/pmf.h | |
| parent | da5ce22df5fe5cbaf0e86d0357728b224c0b1b0e (diff) | |
| download | linux-5eb315ebf47b605cb9364da40a9363ad4065014b.tar.xz | |
platform/x86/amd/pmf: Add support for PMF APCI layer
PMF driver implements the ACPI methods as defined by AMD for PMF Support.
The ACPI layer acts as a glue that helps in providing the infrastructure
for OEMs customization.
OEMs can refer to PMF support documentation to decide on the list of
functions to be supported on their specific platform model.
AMD mandates that PMF ACPI fn0 and fn1 to be implemented which
provides the set of functions, params and the notifications that
would be sent to PMF driver so that PMF driver can adapt and
react.
Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Link: https://lore.kernel.org/r/20220802151149.2123699-3-Shyam-sundar.S-k@amd.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Diffstat (limited to 'drivers/platform/x86/amd/pmf/pmf.h')
| -rw-r--r-- | drivers/platform/x86/amd/pmf/pmf.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/platform/x86/amd/pmf/pmf.h b/drivers/platform/x86/amd/pmf/pmf.h index 1c2e942e5096..bdadbff168ee 100644 --- a/drivers/platform/x86/amd/pmf/pmf.h +++ b/drivers/platform/x86/amd/pmf/pmf.h @@ -11,6 +11,12 @@ #ifndef PMF_H #define PMF_H +#include <linux/acpi.h> + +/* APMF Functions */ +#define APMF_FUNC_VERIFY_INTERFACE 0 +#define APMF_FUNC_GET_SYS_PARAMS 1 + /* Message Definitions */ #define SET_SPL 0x03 /* SPL: Sustained Power Limit */ #define SET_SPPT 0x05 /* SPPT: Slow Package Power Tracking */ @@ -30,6 +36,21 @@ #define GET_STT_LIMIT_APU 0x20 #define GET_STT_LIMIT_HS2 0x21 +/* AMD PMF BIOS interfaces */ +struct apmf_verify_interface { + u16 size; + u16 version; + u32 notification_mask; + u32 supported_functions; +} __packed; + +struct apmf_system_params { + u16 size; + u32 valid_mask; + u32 flags; + u8 command_code; +} __packed; + struct amd_pmf_dev { void __iomem *regbase; void __iomem *smu_virt_addr; @@ -38,9 +59,11 @@ struct amd_pmf_dev { u32 cpu_id; struct device *dev; struct mutex lock; /* protects the PMF interface */ + u32 supported_func; }; /* Core Layer */ +int apmf_acpi_init(struct amd_pmf_dev *pmf_dev); int amd_pmf_send_cmd(struct amd_pmf_dev *dev, u8 message, bool get, u32 arg, u32 *data); #endif /* PMF_H */ |