[PATCH] drm/amd: decrease CP queue sleep time

[Alex Deucher]

On Mon, Dec 16, 2024 at 4:43 PM Elena Sakhnovitch
<Elena.Sakhnovitch at amd.com> wrote:
>
> From: Elena Sakhnovitch <Elena.Sakhovitch at amd.com>
>
> CP_IQ_WAIT_TIME2.QUE_SLEEP hardware default is 0x40, i.e.
>  64, so we put the queue to sleep for 64,000 clock cycles.
> This is too long, and setting it to 0x1 shoul be enough to
> load date out of memory during queue connect.
> Signed-off-by: Elena Sakhnovitch <Elena.Sakhnovitch at amd.com>
> ---
>  drivers/gpu/drm/amd/include/asic_reg/gc/gc_10_1_0_default.h | 2 +-
>  drivers/gpu/drm/amd/include/asic_reg/gc/gc_10_3_0_default.h | 2 +-
>  drivers/gpu/drm/amd/include/asic_reg/gc/gc_9_0_default.h    | 2 +-

These headers correspond to the hw powerup defaults.  If you change
them, that changes the semantic meaning of these headers.  If you want
to change the settings, it would be better to change the driver code
that programs these registers.

Alex

>  3 files changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/include/asic_reg/gc/gc_10_1_0_default.h b/drivers/gpu/drm/amd/include/asic_reg/gc/gc_10_1_0_default.h
> index 320e1ee5df1a..da6762309c3c 100644
> --- a/drivers/gpu/drm/amd/include/asic_reg/gc/gc_10_1_0_default.h
> +++ b/drivers/gpu/drm/amd/include/asic_reg/gc/gc_10_1_0_default.h
> @@ -2479,7 +2479,7 @@
>  #define mmCP_CONTEXT_CNTL_DEFAULT                                                0x00750075
>  #define mmCP_MAX_CONTEXT_DEFAULT                                                 0x00000007
>  #define mmCP_IQ_WAIT_TIME1_DEFAULT                                               0x40404040
> -#define mmCP_IQ_WAIT_TIME2_DEFAULT                                               0x40404040
> +#define mmCP_IQ_WAIT_TIME2_DEFAULT                                               0x10404040
>  #define mmCP_RB0_BASE_HI_DEFAULT                                                 0x00000000
>  #define mmCP_RB1_BASE_HI_DEFAULT                                                 0x00000000
>  #define mmCP_VMID_RESET_DEFAULT                                                  0x00000000
> diff --git a/drivers/gpu/drm/amd/include/asic_reg/gc/gc_10_3_0_default.h b/drivers/gpu/drm/amd/include/asic_reg/gc/gc_10_3_0_default.h
> index 21d2f7d1debc..07b112b11a3f 100644
> --- a/drivers/gpu/drm/amd/include/asic_reg/gc/gc_10_3_0_default.h
> +++ b/drivers/gpu/drm/amd/include/asic_reg/gc/gc_10_3_0_default.h
> @@ -2320,7 +2320,7 @@
>  #define mmCP_CONTEXT_CNTL_DEFAULT                                                0x00750075
>  #define mmCP_MAX_CONTEXT_DEFAULT                                                 0x00000007
>  #define mmCP_IQ_WAIT_TIME1_DEFAULT                                               0x40404040
> -#define mmCP_IQ_WAIT_TIME2_DEFAULT                                               0x40404040
> +#define mmCP_IQ_WAIT_TIME2_DEFAULT                                               0x10404040
>  #define mmCP_RB0_BASE_HI_DEFAULT                                                 0x00000000
>  #define mmCP_RB1_BASE_HI_DEFAULT                                                 0x00000000
>  #define mmCP_VMID_RESET_DEFAULT                                                  0x00000000
> diff --git a/drivers/gpu/drm/amd/include/asic_reg/gc/gc_9_0_default.h b/drivers/gpu/drm/amd/include/asic_reg/gc/gc_9_0_default.h
> index 5bf84c6d0ec3..64183c888fd4 100644
> --- a/drivers/gpu/drm/amd/include/asic_reg/gc/gc_9_0_default.h
> +++ b/drivers/gpu/drm/amd/include/asic_reg/gc/gc_9_0_default.h
> @@ -1295,7 +1295,7 @@
>  #define mmCP_CONTEXT_CNTL_DEFAULT                                                0x00750075
>  #define mmCP_MAX_CONTEXT_DEFAULT                                                 0x00000007
>  #define mmCP_IQ_WAIT_TIME1_DEFAULT                                               0x40404040
> -#define mmCP_IQ_WAIT_TIME2_DEFAULT                                               0x40404040
> +#define mmCP_IQ_WAIT_TIME2_DEFAULT                                               0x10404040
>  #define mmCP_RB0_BASE_HI_DEFAULT                                                 0x00000000
>  #define mmCP_RB1_BASE_HI_DEFAULT                                                 0x00000000
>  #define mmCP_VMID_RESET_DEFAULT                                                  0x00000000
> --
> 2.34.1
>