From 1ba91b54a9051205c2110ed43a7dc5650d49ca0e Mon Sep 17 00:00:00 2001
From: Alex Deucher <alexander.deucher@amd.com>
Date: Thu, 9 Mar 2023 15:28:25 -0500
Subject: [PATCH] drm/amdgpu: add support for new GFX shadow size query
Use the new callback to fetch the data. Return an error if
not supported. UMDs should use this query to check whether
shadow buffers are supported and if so what size they
should be.
v2: return an error rather than a zerod structure.
v3: drop GDS, move into dev_info structure. Data will be
0 if not supported.
v4: drop local variable r
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
index a5bae7eb993a0..1d3b224b8b289 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
@@ -876,6 +876,19 @@ int amdgpu_info_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
dev_info->gl2c_cache_size = adev->gfx.config.gc_gl2c_per_gpu;
dev_info->mall_size = adev->gmc.mall_size;
+
+ if (adev->gfx.funcs->get_gfx_shadow_info) {
+ struct amdgpu_gfx_shadow_info shadow_info;
+
+ ret = amdgpu_gfx_get_gfx_shadow_info(adev, &shadow_info);
+ if (!ret) {
+ dev_info->shadow_size = shadow_info.shadow_size;
+ dev_info->shadow_alignment = shadow_info.shadow_alignment;
+ dev_info->csa_size = shadow_info.csa_size;
+ dev_info->csa_alignment = shadow_info.csa_alignment;
+ }
+ }
+
ret = copy_to_user(out, dev_info,
min((size_t)size, sizeof(*dev_info))) ? -EFAULT : 0;
kfree(dev_info);
--
GitLab