Am 05.09.2018 um 17:28 schrieb shaoyunl:
> From: Alex Deucher <alexander.deucher at amd.com>
>
> Used to populate the xgmi info on vega20.
>
> v2: PF_MAX_REGION is val - 1 (Ray)
>
> Acked-by: Huang Rui <ray.huang at amd.com>
> Acked-by: Slava Abramov <slava.abramov at amd.com>
> Reviewed-by :Shaoyun liu <Shaoyun.liu at amd.com>
> Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
Acked-by: Christian König <christian.koenig at amd.com>
>
> Change-Id: Ia7b7f112880e69cdbcf73a8abf04cd6ef303940c
> ---
> drivers/gpu/drm/amd/amdgpu/Makefile | 2 +-
> drivers/gpu/drm/amd/amdgpu/gfxhub_v1_1.c | 50 ++++++++++++++++++++++++++++++++
> drivers/gpu/drm/amd/amdgpu/gfxhub_v1_1.h | 29 ++++++++++++++++++
> 3 files changed, 80 insertions(+), 1 deletion(-)
> create mode 100644 drivers/gpu/drm/amd/amdgpu/gfxhub_v1_1.c
> create mode 100644 drivers/gpu/drm/amd/amdgpu/gfxhub_v1_1.h
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/Makefile b/drivers/gpu/drm/amd/amdgpu/Makefile
> index 847536b..e83ba7b 100644
> --- a/drivers/gpu/drm/amd/amdgpu/Makefile
> +++ b/drivers/gpu/drm/amd/amdgpu/Makefile
> @@ -74,7 +74,7 @@ amdgpu-y += \
> amdgpu-y += \
> gmc_v7_0.o \
> gmc_v8_0.o \
> - gfxhub_v1_0.o mmhub_v1_0.o gmc_v9_0.o
> + gfxhub_v1_0.o mmhub_v1_0.o gmc_v9_0.o gfxhub_v1_1.o
>
> # add IH block
> amdgpu-y += \
> diff --git a/drivers/gpu/drm/amd/amdgpu/gfxhub_v1_1.c b/drivers/gpu/drm/amd/amdgpu/gfxhub_v1_1.c
> new file mode 100644
> index 0000000..d4170cb
> --- /dev/null
> +++ b/drivers/gpu/drm/amd/amdgpu/gfxhub_v1_1.c
> @@ -0,0 +1,50 @@
> +/*
> + * Copyright 2018 Advanced Micro Devices, Inc.
> + *
> + * Permission is hereby granted, free of charge, to any person obtaining a
> + * copy of this software and associated documentation files (the "Software"),
> + * to deal in the Software without restriction, including without limitation
> + * the rights to use, copy, modify, merge, publish, distribute, sublicense,
> + * and/or sell copies of the Software, and to permit persons to whom the
> + * Software is furnished to do so, subject to the following conditions:
> + *
> + * The above copyright notice and this permission notice shall be included in
> + * all copies or substantial portions of the Software.
> + *
> + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
> + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
> + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
> + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
> + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
> + * OTHER DEALINGS IN THE SOFTWARE.
> + *
> + */
> +#include "amdgpu.h"
> +#include "gfxhub_v1_1.h"
> +
> +#include "gc/gc_9_2_1_offset.h"
> +#include "gc/gc_9_2_1_sh_mask.h"
> +
> +#include "soc15_common.h"
> +
> +int gfxhub_v1_1_get_xgmi_info(struct amdgpu_device *adev)
> +{
> + u32 xgmi_lfb_cntl = RREG32_SOC15(GC, 0, mmMC_VM_XGMI_LFB_CNTL);
> + u32 max_region =
> + REG_GET_FIELD(xgmi_lfb_cntl, MC_VM_XGMI_LFB_CNTL, PF_MAX_REGION);
> +
> + /* PF_MAX_REGION=0 means xgmi is disabled */
> + if (max_region) {
> + adev->gmc.xgmi.num_physical_nodes = max_region + 1;
> + if (adev->gmc.xgmi.num_physical_nodes > 4)
> + return -EINVAL;
> +
> + adev->gmc.xgmi.physical_node_id =
> + REG_GET_FIELD(xgmi_lfb_cntl, MC_VM_XGMI_LFB_CNTL, PF_LFB_REGION);
> + if (adev->gmc.xgmi.physical_node_id > 3)
> + return -EINVAL;
> + }
> +
> + return 0;
> +}
> diff --git a/drivers/gpu/drm/amd/amdgpu/gfxhub_v1_1.h b/drivers/gpu/drm/amd/amdgpu/gfxhub_v1_1.h
> new file mode 100644
> index 0000000..d753cf2
> --- /dev/null
> +++ b/drivers/gpu/drm/amd/amdgpu/gfxhub_v1_1.h
> @@ -0,0 +1,29 @@
> +/*
> + * Copyright 2018 Advanced Micro Devices, Inc.
> + *
> + * Permission is hereby granted, free of charge, to any person obtaining a
> + * copy of this software and associated documentation files (the "Software"),
> + * to deal in the Software without restriction, including without limitation
> + * the rights to use, copy, modify, merge, publish, distribute, sublicense,
> + * and/or sell copies of the Software, and to permit persons to whom the
> + * Software is furnished to do so, subject to the following conditions:
> + *
> + * The above copyright notice and this permission notice shall be included in
> + * all copies or substantial portions of the Software.
> + *
> + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
> + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
> + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
> + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
> + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
> + * OTHER DEALINGS IN THE SOFTWARE.
> + *
> + */
> +
> +#ifndef __GFXHUB_V1_1_H__
> +#define __GFXHUB_V1_1_H__
> +
> +int gfxhub_v1_1_get_xgmi_info(struct amdgpu_device *adev);
> +
> +#endif
