drm/amdgpu/gmc9: add a new gfxhub 1.1 helper for xgmi

Used to populate the xgmi info on vega20.

v2: PF_MAX_REGION is val - 1 (Ray)

Acked-by: Huang Rui <ray.huang@amd.com>
Acked-by: Slava Abramov <slava.abramov@amd.com>
Reviewed-by :Shaoyun liu <Shaoyun.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by :Shaoyun liu <Shaoyun.liu@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/Makefile b/drivers/gpu/drm/amd/amdgpu/Makefile
index 847536b..e83ba7b 100644 (file)
--- 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 (file)
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 (file)
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

diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
index 3529c55..e9b5a13 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
@@ -43,6 +43,7 @@
 
 #include "gfxhub_v1_0.h"
 #include "mmhub_v1_0.h"
+#include "gfxhub_v1_1.h"
 
 #include "ivsrcid/vmc/irqsrcs_vmc_1_0.h"
 
@@ -985,6 +986,12 @@ static int gmc_v9_0_sw_init(void *handle)
        }
        adev->need_swiotlb = drm_get_max_iomem() > ((u64)1 << dma_bits);
 
+       if (adev->asic_type == CHIP_VEGA20) {
+               r = gfxhub_v1_1_get_xgmi_info(adev);
+               if (r)
+                       return r;
+       }
+
        r = gmc_v9_0_mc_init(adev);
        if (r)
                return r;