Signed-off-by: Sonny Jiang
Acked-by: Junwei Zhang
---
Documentation/gpu/amdgpu.rst| 7 +
drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 370 +++-
2 files changed, 370 insertions(+), 7 deletions(-)
diff --git a/Documentation/gpu/amdgpu.rst b/Documentation/gpu/amdgpu.rst
index 765c2a3..a740e49 100644
--- a/Documentation/gpu/amdgpu.rst
+++ b/Documentation/gpu/amdgpu.rst
@@ -5,6 +5,13 @@
The drm/amdgpu driver supports all AMD Radeon GPUs based on the Graphics Core
Next (GCN) architecture.
+Module Parameters
+=
+
+The amdgpu driver supports the following module parameters:
+
+.. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
+
Core Driver Infrastructure
==
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
index 963578c..72874cd 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
@@ -1,10 +1,3 @@
-/**
- * \file amdgpu_drv.c
- * AMD Amdgpu driver
- *
- * \author Gareth Hughes
- */
-
/*
* Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
* All Rights Reserved.
@@ -136,102 +129,299 @@ int amdgpu_gpu_recovery = -1; /* auto */
int amdgpu_emu_mode = 0;
uint amdgpu_smu_memory_pool_size = 0;
+/**
+ * DOC: vramlimit (int)
+ * Restrict the total amount of VRAM in MiB for testing. The default is 0
(Use full VRAM).
+ */
MODULE_PARM_DESC(vramlimit, "Restrict VRAM for testing, in megabytes");
module_param_named(vramlimit, amdgpu_vram_limit, int, 0600);
+/**
+ * DOC: vis_vramlimit (int)
+ * Restrict the amount of CPU visible VRAM in MiB for testing. The default is
0 (Use full CPU visible VRAM).
+ */
MODULE_PARM_DESC(vis_vramlimit, "Restrict visible VRAM for testing, in
megabytes");
module_param_named(vis_vramlimit, amdgpu_vis_vram_limit, int, 0444);
+/**
+ * DOC: gartsize (uint)
+ * Restrict the size of GART in Mib (32, 64, etc.) for testing. The default is
-1 (The size depends on asic).
+ */
MODULE_PARM_DESC(gartsize, "Size of GART to setup in megabytes (32, 64, etc.,
-1=auto)");
module_param_named(gartsize, amdgpu_gart_size, uint, 0600);
+/**
+ * DOC: gttsize (int)
+ * Restrict the size of GTT domain in MiB for testing. The default is -1 (It's
VRAM size if 3GB < VRAM < 3/4 RAM,
+ * otherwise 3/4 RAM size).
+ */
MODULE_PARM_DESC(gttsize, "Size of the GTT domain in megabytes (-1 = auto)");
module_param_named(gttsize, amdgpu_gtt_size, int, 0600);
+/**
+ * DOC: moverate (int)
+ * Set maximum buffer migration rate in MB/s. The default is -1 (8 MB/s).
+ */
MODULE_PARM_DESC(moverate, "Maximum buffer migration rate in MB/s. (32, 64,
etc., -1=auto, 0=1=disabled)");
module_param_named(moverate, amdgpu_moverate, int, 0600);
+/**
+ * DOC: benchmark (int)
+ * Run benchmarks. The default is 0 (Skip benchmarks).
+ */
MODULE_PARM_DESC(benchmark, "Run benchmark");
module_param_named(benchmark, amdgpu_benchmarking, int, 0444);
+/**
+ * DOC: test (int)
+ * Test BO GTT->VRAM and VRAM->GTT GPU copies. The default is 0 (Skip test,
only set 1 to run test).
+ */
MODULE_PARM_DESC(test, "Run tests");
module_param_named(test, amdgpu_testing, int, 0444);
+/**
+ * DOC: audio (int)
+ * Set Audio. The default is -1 (Enabled), set 0 to disabled it.
+ */
MODULE_PARM_DESC(audio, "Audio enable (-1 = auto, 0 = disable, 1 = enable)");
module_param_named(audio, amdgpu_audio, int, 0444);
+/**
+ * DOC: disp_priority (int)
+ * Set display Priority (0 = auto, 1 = normal, 2 = high). The default is 0.
+ */
MODULE_PARM_DESC(disp_priority, "Display Priority (0 = auto, 1 = normal, 2 =
high)");
module_param_named(disp_priority, amdgpu_disp_priority, int, 0444);
+/**
+ * DOC: hw_i2c (int)
+ * To enable hw i2c engine. The default is 0 (Disabled).
+ */
MODULE_PARM_DESC(hw_i2c, "hw i2c engine enable (0 = disable)");
module_param_named(hw_i2c, amdgpu_hw_i2c, int, 0444);
+/**
+ * DOC: pcie_gen2 (int)
+ * To disable PCIE Gen2 mode (0 = disable, 1 = enable). The default is -1
(auto, enabled).
+ */
MODULE_PARM_DESC(pcie_gen2, "PCIE Gen2 mode (-1 = auto, 0 = disable, 1 =
enable)");
module_param_named(pcie_gen2, amdgpu_pcie_gen2, int, 0444);
+/**
+ * DOC: msi (int)
+ * To disable MSI functionality (1 = enable, 0 = disable). The default is -1
(auto, enabled).
+ */
MODULE_PARM_DESC(msi, "MSI support (1 = enable, 0 = disable, -1 = auto)");
module_param_named(msi, amdgpu_msi, int, 0444);
+/**
+ * DOC: lockup_timeout (int)
+ * Set GPU scheduler timeout value in ms. It must be > 0. The default is
1.
+ */
MODULE_PARM_DESC(lockup_timeout, "GPU lockup timeout in ms > 0 (default
1)");
module_param_named(lockup_timeout, amdgpu_lockup_timeout, int, 0444);
+/**
+ * DOC: dpm (int)
+ * Override for dynamic power management setting (1 = enable, 0 = disable).
The default is -1 (auto).
+ */
MODULE_PARM_DESC(dpm, "DPM support (1 = enable, 0 = disable, -1 = auto)");
module_param_named(dpm, amdgpu_dpm, int, 0444);
