[PATCH 2/2] drm/amdgpu: Add unique_id and serial_number for Arcturus v2

Russell, Kent Kent.Russell at amd.com
Tue Jun 2 15:49:58 UTC 2020


[AMD Public Use]



> -----Original Message-----
> From: Alex Deucher <alexdeucher at gmail.com>
> Sent: Tuesday, June 2, 2020 10:45 AM
> To: Russell, Kent <Kent.Russell at amd.com>
> Cc: amd-gfx list <amd-gfx at lists.freedesktop.org>
> Subject: Re: [PATCH 2/2] drm/amdgpu: Add unique_id and serial_number for
> Arcturus v2
> 
> On Tue, Jun 2, 2020 at 8:53 AM Kent Russell <kent.russell at amd.com> wrote:
> >
> > Add support for unique_id and serial_number, as these are now the same
> > value, and will be for future ASICs as well.
> >
> > v2: Explicitly create unique_id only for VG10/20/ARC
> >
> > Signed-off-by: Kent Russell <kent.russell at amd.com>
> > Change-Id: I3b036a38b19cd84025399b0706b2dad9b7aff713
> > ---
> >  drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c        |  4 ++-
> >  drivers/gpu/drm/amd/powerplay/amdgpu_smu.c    |  2 ++
> >  drivers/gpu/drm/amd/powerplay/arcturus_ppt.c  | 32
> +++++++++++++++++++
> >  .../gpu/drm/amd/powerplay/inc/amdgpu_smu.h    |  1 +
> >  drivers/gpu/drm/amd/powerplay/smu_internal.h  |  2 ++
> >  5 files changed, 40 insertions(+), 1 deletion(-)
> >
> > diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
> > b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
> > index b0dff9ecfb88..b2cdc8a1268f 100644
> > --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
> > +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
> > @@ -1940,7 +1940,9 @@ static int default_attr_update(struct
> amdgpu_device *adev, struct amdgpu_device_
> >                 if (adev->flags & AMD_IS_APU)
> >                         *states = ATTR_STATE_UNSUPPORTED;
> >         } else if (DEVICE_ATTR_IS(unique_id)) {
> > -               if (!adev->unique_id)
> > +               if (asic_type != CHIP_VEGA10 &&
> > +                   asic_type != CHIP_VEGA20 &&
> > +                   asic_type != CHIP_ARCTURUS)
> >                         *states = ATTR_STATE_UNSUPPORTED;
> >         } else if (DEVICE_ATTR_IS(pp_features)) {
> >                 if (adev->flags & AMD_IS_APU || asic_type <
> > CHIP_VEGA10) diff --git a/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
> > b/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
> > index 5294aa7cdde1..7946fd8444a3 100644
> > --- a/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
> > +++ b/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
> > @@ -793,6 +793,8 @@ static int smu_late_init(void *handle)
> >         if (!smu->pm_enabled)
> >                 return 0;
> >
> > +       smu_set_unique_id(smu);
> > +
> >         smu_handle_task(&adev->smu,
> >                         smu->smu_dpm.dpm_level,
> >                         AMD_PP_TASK_COMPLETE_INIT, diff --git
> > a/drivers/gpu/drm/amd/powerplay/arcturus_ppt.c
> > b/drivers/gpu/drm/amd/powerplay/arcturus_ppt.c
> > index d66ac7457574..855e609650d9 100644
> > --- a/drivers/gpu/drm/amd/powerplay/arcturus_ppt.c
> > +++ b/drivers/gpu/drm/amd/powerplay/arcturus_ppt.c
> > @@ -2262,6 +2262,37 @@ static void
> arcturus_i2c_eeprom_control_fini(struct i2c_adapter *control)
> >         i2c_del_adapter(control);
> >  }
> >
> > +static void arcturus_set_unique_id(struct smu_context *smu) {
> > +       struct amdgpu_device *adev = smu->adev;
> > +       uint32_t top32, bottom32, smu_version, size;
> > +       char sn[16];
> > +       uint64_t id;
> > +
> > +       if (smu_get_smc_version(smu, NULL, &smu_version)) {
> > +               pr_warn("Failed to get smu version, cannot get unique_id or
> serial_number\n");
> > +               return;
> > +       }
> > +
> > +       /* PPSMC_MSG_ReadSerial* is supported by 54.23.0 and onwards */
> > +       if (smu_version < 0x361700) {
> > +               pr_warn("ReadSerial is only supported by PMFW 54.23.0 and
> onwards\n");
> > +               return;
> > +       }
> > +
> > +       /* Get the SN to turn into a Unique ID */
> > +       smu_send_smc_msg(smu, SMU_MSG_ReadSerialNumTop32, &top32);
> > +       smu_send_smc_msg(smu, SMU_MSG_ReadSerialNumBottom32,
> > + &bottom32);
> > +
> > +       id = ((uint64_t)bottom32 << 32) | top32;
> > +       adev->unique_id = id;
> > +       /* For Arcturus-and-later, unique_id == serial_number, so convert it to a
> > +        * 16-digit HEX string for convenience and backwards-compatibility
> > +        */
> > +       size = sprintf(sn, "%llx", id);
> > +       memcpy(adev->serial, &sn, size); }
> > +
> >  static bool arcturus_is_baco_supported(struct smu_context *smu)  {
> >         struct amdgpu_device *adev = smu->adev; @@ -2416,6 +2447,7 @@
> > static const struct pptable_funcs arcturus_ppt_funcs = {
> >         .dpm_set_uvd_enable = arcturus_dpm_set_uvd_enable,
> >         .i2c_eeprom_init = arcturus_i2c_eeprom_control_init,
> >         .i2c_eeprom_fini = arcturus_i2c_eeprom_control_fini,
> > +       .set_unique_id = arcturus_set_unique_id,
> >         .init_microcode = smu_v11_0_init_microcode,
> >         .load_microcode = smu_v11_0_load_microcode,
> >         .init_smc_tables = smu_v11_0_init_smc_tables, diff --git
> > a/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h
> > b/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h
> > index 5bb1ac821aeb..bfa5211de079 100644
> > --- a/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h
> > +++ b/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h
> > @@ -495,6 +495,7 @@ struct pptable_funcs {
> >         int (*update_pcie_parameters)(struct smu_context *smu, uint32_t
> pcie_gen_cap, uint32_t pcie_width_cap);
> >         int (*i2c_eeprom_init)(struct i2c_adapter *control);
> >         void (*i2c_eeprom_fini)(struct i2c_adapter *control);
> > +       void (*set_unique_id)(struct smu_context *smu);
> 
> As I mentioned in my previous email, I think these functions would be better
> worded as "get_unique_id" since we are fetching it from the hardware not
> storing it to the hardware.

Sorry, I missed that in the previous e-mail. I'll do that now. I was torn between get and set, since it gets it from the SMU, but it sets the variable, so that decision helps for clarity. Thanks!

 Kent 
> 
> Alex
> 
> >         int (*get_dpm_clock_table)(struct smu_context *smu, struct dpm_clocks
> *clock_table);
> >         int (*init_microcode)(struct smu_context *smu);
> >         int (*load_microcode)(struct smu_context *smu); diff --git
> > a/drivers/gpu/drm/amd/powerplay/smu_internal.h
> > b/drivers/gpu/drm/amd/powerplay/smu_internal.h
> > index 6c59eeef2590..125d976215a6 100644
> > --- a/drivers/gpu/drm/amd/powerplay/smu_internal.h
> > +++ b/drivers/gpu/drm/amd/powerplay/smu_internal.h
> > @@ -218,6 +218,8 @@ static inline int smu_send_smc_msg(struct
> smu_context *smu, enum smu_message_typ
> >                 ((smu)->ppt_funcs->i2c_eeprom_init ?
> > (smu)->ppt_funcs->i2c_eeprom_init((control)) : 0)  #define
> smu_i2c_eeprom_fini(smu, control) \
> >                 ((smu)->ppt_funcs->i2c_eeprom_fini ?
> > (smu)->ppt_funcs->i2c_eeprom_fini((control)) : 0)
> > +#define smu_set_unique_id(smu) \
> > +               ((smu)->ppt_funcs->set_unique_id ?
> > +(smu)->ppt_funcs->set_unique_id((smu)) : 0)
> >
> >  #define smu_log_thermal_throttling(smu) \
> >                 ((smu)->ppt_funcs->log_thermal_throttling_event ?
> > (smu)->ppt_funcs->log_thermal_throttling_event((smu)) : 0)
> > --
> > 2.17.1
> >
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