[PATCH 1/2] drm/amd/pm: enable baco reset for Hawaii

[Sandeep]

On Tue, 27 Oct, 2020, 08:10 Evan Quan, <evan.quan at amd.com> wrote:

> Which can be used for S4(hibernation) support.
>
> Change-Id: I6e4962c120a3baed14cea04ed1742ff11a273d34
> Signed-off-by: Evan Quan <evan.quan at amd.com>
> ---
>  drivers/gpu/drm/amd/amdgpu/cik.c                 | 4 +++-
>  drivers/gpu/drm/amd/pm/powerplay/hwmgr/ci_baco.c | 7 ++++---
>  2 files changed, 7 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/cik.c
> b/drivers/gpu/drm/amd/amdgpu/cik.c
> index 03ff8bd1fee8..5442df094102 100644
> --- a/drivers/gpu/drm/amd/amdgpu/cik.c
> +++ b/drivers/gpu/drm/amd/amdgpu/cik.c
> @@ -1336,11 +1336,13 @@ cik_asic_reset_method(struct amdgpu_device *adev)
>
>         switch (adev->asic_type) {
>         case CHIP_BONAIRE:
> -       case CHIP_HAWAII:
>                 /* disable baco reset until it works */
>                 /* smu7_asic_get_baco_capability(adev, &baco_reset); */
>                 baco_reset = false;
>                 break;
> +       case CHIP_HAWAII:
> +               baco_reset = cik_asic_supports_baco(adev);
> +               break;
>         default:
>                 baco_reset = false;
>                 break;
> diff --git a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/ci_baco.c
> b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/ci_baco.c
> index 3be40114e63d..45f608838f6e 100644
> --- a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/ci_baco.c
> +++ b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/ci_baco.c
> @@ -142,12 +142,12 @@ static const struct baco_cmd_entry exit_baco_tbl[] =
>         { CMD_READMODIFYWRITE, mmBACO_CNTL,
> BACO_CNTL__BACO_BCLK_OFF_MASK,           BACO_CNTL__BACO_BCLK_OFF__SHIFT,
> 0, 0x00 },
>         { CMD_READMODIFYWRITE, mmBACO_CNTL,
> BACO_CNTL__BACO_POWER_OFF_MASK,          BACO_CNTL__BACO_POWER_OFF__SHIFT,
> 0, 0x00 },
>         { CMD_DELAY_MS, 0, 0, 0, 20, 0 },
> -       { CMD_WAITFOR, mmBACO_CNTL, BACO_CNTL__PWRGOOD_BF_MASK, 0,
> 0xffffffff, 0x20 },
> +       { CMD_WAITFOR, mmBACO_CNTL, BACO_CNTL__PWRGOOD_BF_MASK, 0,
> 0xffffffff, 0x200 },
>         { CMD_READMODIFYWRITE, mmBACO_CNTL, BACO_CNTL__BACO_ISO_DIS_MASK,
> BACO_CNTL__BACO_ISO_DIS__SHIFT, 0, 0x01 },
> -       { CMD_WAITFOR, mmBACO_CNTL, BACO_CNTL__PWRGOOD_MASK, 0, 5, 0x1c },
> +       { CMD_WAITFOR, mmBACO_CNTL, BACO_CNTL__PWRGOOD_MASK, 0, 5, 0x1c00
> },
>         { CMD_READMODIFYWRITE, mmBACO_CNTL,
> BACO_CNTL__BACO_ANA_ISO_DIS_MASK, BACO_CNTL__BACO_ANA_ISO_DIS__SHIFT, 0,
> 0x01 },
>         { CMD_READMODIFYWRITE, mmBACO_CNTL, BACO_CNTL__BACO_RESET_EN_MASK,
> BACO_CNTL__BACO_RESET_EN__SHIFT, 0, 0x00 },
> -       { CMD_WAITFOR, mmBACO_CNTL, BACO_CNTL__RCU_BIF_CONFIG_DONE_MASK,
> 0, 5, 0x10 },
> +       { CMD_WAITFOR, mmBACO_CNTL, BACO_CNTL__RCU_BIF_CONFIG_DONE_MASK,
> 0, 5, 0x100 },
>         { CMD_READMODIFYWRITE, mmBACO_CNTL, BACO_CNTL__BACO_EN_MASK,
> BACO_CNTL__BACO_EN__SHIFT, 0, 0x00 },
>         { CMD_WAITFOR, mmBACO_CNTL, BACO_CNTL__BACO_MODE_MASK, 0,
> 0xffffffff, 0x00 }
>  };
> @@ -155,6 +155,7 @@ static const struct baco_cmd_entry exit_baco_tbl[] =
>  static const struct baco_cmd_entry clean_baco_tbl[] =
>  {
>         { CMD_WRITE, mmBIOS_SCRATCH_6, 0, 0, 0, 0 },
> +       { CMD_WRITE, mmBIOS_SCRATCH_7, 0, 0, 0, 0 },
>         { CMD_WRITE, mmCP_PFP_UCODE_ADDR, 0, 0, 0, 0 }
>  };
>
> --
> 2.29.0
>


Not sure why I'm cc'd on this, I'm not a maintainer, nor does this patch
seem related to any patches I've contributed.

- Sandeep

>
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