From aea827d5abae9d308ef6237a485b9614f9987b89 Mon Sep 17 00:00:00 2001
From: Lijo Lazar <lijo.lazar@amd.com>
Date: Thu, 6 Feb 2025 17:33:46 +0530
Subject: [PATCH] drm/amdgpu: Remove unsupported xgmi versions
XGMI v4.8.0 is not used in any SOCs. Remove the associated functions.
Also, ensure get_xgmi_info callback pointer is not NULL before calling
the function.
Signed-off-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c | 3 --
drivers/gpu/drm/amd/amdgpu/gfxhub_v2_1.c | 37 -------------------
2 files changed, 40 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c
index a4258127083d0..967a992829bdb 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c
@@ -2772,9 +2772,6 @@ int amdgpu_discovery_set_ip_blocks(struct amdgpu_device *adev)
break;
}
- if (amdgpu_ip_version(adev, XGMI_HWIP, 0) == IP_VERSION(4, 8, 0))
- adev->gmc.xgmi.supported = true;
-
if (amdgpu_ip_version(adev, GC_HWIP, 0) == IP_VERSION(9, 4, 3) ||
amdgpu_ip_version(adev, GC_HWIP, 0) == IP_VERSION(9, 4, 4))
adev->ip_versions[XGMI_HWIP][0] = IP_VERSION(6, 4, 0);
diff --git a/drivers/gpu/drm/amd/amdgpu/gfxhub_v2_1.c b/drivers/gpu/drm/amd/amdgpu/gfxhub_v2_1.c
index 17509f32f61a4..deb95fab02dfe 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfxhub_v2_1.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfxhub_v2_1.c
@@ -505,42 +505,6 @@ static void gfxhub_v2_1_init(struct amdgpu_device *adev)
hub->vmhub_funcs = &gfxhub_v2_1_vmhub_funcs;
}
-static int gfxhub_v2_1_get_xgmi_info(struct amdgpu_device *adev)
-{
- u32 xgmi_lfb_cntl = RREG32_SOC15(GC, 0, mmGCMC_VM_XGMI_LFB_CNTL);
- u32 max_region =
- REG_GET_FIELD(xgmi_lfb_cntl, GCMC_VM_XGMI_LFB_CNTL, PF_MAX_REGION);
- u32 max_num_physical_nodes = 0;
- u32 max_physical_node_id = 0;
-
- switch (amdgpu_ip_version(adev, XGMI_HWIP, 0)) {
- case IP_VERSION(4, 8, 0):
- max_num_physical_nodes = 4;
- max_physical_node_id = 3;
- break;
- default:
- return -EINVAL;
- }
-
- /* 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 > max_num_physical_nodes)
- return -EINVAL;
-
- adev->gmc.xgmi.physical_node_id =
- REG_GET_FIELD(xgmi_lfb_cntl, GCMC_VM_XGMI_LFB_CNTL, PF_LFB_REGION);
- if (adev->gmc.xgmi.physical_node_id > max_physical_node_id)
- return -EINVAL;
-
- adev->gmc.xgmi.node_segment_size = REG_GET_FIELD(
- RREG32_SOC15(GC, 0, mmGCMC_VM_XGMI_LFB_SIZE),
- GCMC_VM_XGMI_LFB_SIZE, PF_LFB_SIZE) << 24;
- }
-
- return 0;
-}
-
static void gfxhub_v2_1_utcl2_harvest(struct amdgpu_device *adev)
{
int i;
@@ -696,7 +660,6 @@ const struct amdgpu_gfxhub_funcs gfxhub_v2_1_funcs = {
.gart_disable = gfxhub_v2_1_gart_disable,
.set_fault_enable_default = gfxhub_v2_1_set_fault_enable_default,
.init = gfxhub_v2_1_init,
- .get_xgmi_info = gfxhub_v2_1_get_xgmi_info,
.utcl2_harvest = gfxhub_v2_1_utcl2_harvest,
.mode2_save_regs = gfxhub_v2_1_save_regs,
.mode2_restore_regs = gfxhub_v2_1_restore_regs,
--
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