drm/amdgpu: add experimental resets debug flag

Add this flag to enable experimental resets for testing before they
are fully validated.
Reviewed-and-tested-by: Jiadong Zhu <Jiadong.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu.h

@@ -1164,6 +1164,7 @@ struct amdgpu_device {
 	bool                            debug_disable_soft_recovery;
 	bool                            debug_use_vram_fw_buf;
 	bool                            debug_enable_ras_aca;
+	bool                            debug_exp_resets;
 
 	bool				enforce_isolation[MAX_XCP];
 	/* Added this mutex for cleaner shader isolation between GFX and compute processes */

drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c

@@ -131,6 +131,7 @@ enum AMDGPU_DEBUG_MASK {
 	AMDGPU_DEBUG_DISABLE_GPU_SOFT_RECOVERY = BIT(2),
 	AMDGPU_DEBUG_USE_VRAM_FW_BUF = BIT(3),
 	AMDGPU_DEBUG_ENABLE_RAS_ACA = BIT(4),
+	AMDGPU_DEBUG_ENABLE_EXP_RESETS = BIT(5),
 };
 
 unsigned int amdgpu_vram_limit = UINT_MAX;
@@ -2199,6 +2200,11 @@ static void amdgpu_init_debug_options(struct amdgpu_device *adev)
 		pr_info("debug: enable RAS ACA\n");
 		adev->debug_enable_ras_aca = true;
 	}
+
+	if (amdgpu_debug_mask & AMDGPU_DEBUG_ENABLE_EXP_RESETS) {
+		pr_info("debug: enable experimental reset features\n");
+		adev->debug_exp_resets = true;
+	}
 }
 
 static unsigned long amdgpu_fix_asic_type(struct pci_dev *pdev, unsigned long flags)