[PATCH 1/2] drm/amdgpu: Add num_banks and num_ranks to gfx config structure

[Yong Zhao]

The two members will be used by KFD later.

Change-Id: I36a605e359b242f2fe546fb67f8e402c48a62342
Signed-off-by: Yong Zhao <yong.z...@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.h | 2 ++
 drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c   | 5 +++++
 drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c   | 5 +++++
 3 files changed, 12 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.h 
b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.h
index ca17ffb01301..37ba05b63b2a 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.h
@@ -151,6 +151,8 @@ struct amdgpu_gfx_config {
        unsigned num_gpus;
        unsigned multi_gpu_tile_size;
        unsigned mc_arb_ramcfg;
+       unsigned num_banks;
+       unsigned num_ranks;
        unsigned gb_addr_config;
        unsigned num_rbs;
        unsigned gs_vgt_table_depth;
diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c 
b/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c
index 8f20a5dd44fe..172905dadf9a 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c
@@ -4338,6 +4338,11 @@ static void gfx_v7_0_gpu_early_init(struct amdgpu_device 
*adev)
        adev->gfx.config.mc_arb_ramcfg = RREG32(mmMC_ARB_RAMCFG);
        mc_arb_ramcfg = adev->gfx.config.mc_arb_ramcfg;
 
+       adev->gfx.config.num_banks = REG_GET_FIELD(mc_arb_ramcfg,
+                               MC_ARB_RAMCFG, NOOFBANK);
+       adev->gfx.config.num_ranks = REG_GET_FIELD(mc_arb_ramcfg,
+                               MC_ARB_RAMCFG, NOOFRANKS);
+
        adev->gfx.config.num_tile_pipes = adev->gfx.config.max_tile_pipes;
        adev->gfx.config.mem_max_burst_length_bytes = 256;
        if (adev->flags & AMD_IS_APU) {
diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c 
b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
index fa245973de12..e63f98b2d389 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
@@ -1820,6 +1820,11 @@ static int gfx_v8_0_gpu_early_init(struct amdgpu_device 
*adev)
        adev->gfx.config.mc_arb_ramcfg = RREG32(mmMC_ARB_RAMCFG);
        mc_arb_ramcfg = adev->gfx.config.mc_arb_ramcfg;
 
+       adev->gfx.config.num_banks = REG_GET_FIELD(mc_arb_ramcfg,
+                               MC_ARB_RAMCFG, NOOFBANK);
+       adev->gfx.config.num_ranks = REG_GET_FIELD(mc_arb_ramcfg,
+                               MC_ARB_RAMCFG, NOOFRANKS);
+
        adev->gfx.config.num_tile_pipes = adev->gfx.config.max_tile_pipes;
        adev->gfx.config.mem_max_burst_length_bytes = 256;
        if (adev->flags & AMD_IS_APU) {
-- 
2.17.1

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