Add amdgpu_emu_mode module parameter to control the emulation mode
Avoid vbios operation on emulation since there is no vbios post duirng emulation,
use the common hw_init to simulate the post
Change-Id: Iba32fa16e735490e7401e471219797b83c6c2a58
Signed-off-by: Shaoyun Liu <Shaoyun.Liu at amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu.h | 1 +
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 26 +++++++++++++++++++++++---
drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 4 ++++
3 files changed, 28 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index ab10295..4c9c320 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -129,6 +129,7 @@
extern int amdgpu_lbpw;
extern int amdgpu_compute_multipipe;
extern int amdgpu_gpu_recovery;
+extern int amdgpu_emu_mode;
#ifdef CONFIG_DRM_AMDGPU_SI
extern int amdgpu_si_support;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 6adb6e8..fe7a941 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -1339,6 +1339,20 @@ static int amdgpu_device_ip_init(struct amdgpu_device *adev)
return r;
}
adev->ip_blocks[i].status.sw = true;
+
+ if (amdgpu_emu_mode == 1) {
+ /* Need to do common hw init first on emulation */
+ if (adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_COMMON) {
+ r = adev->ip_blocks[i].version->funcs->hw_init((void *)adev);
+ if (r) {
+ DRM_ERROR("hw_init of IP block <%s> failed %d\n",
+ adev->ip_blocks[i].version->funcs->name, r);
+ return r;
+ }
+ adev->ip_blocks[i].status.hw = true;
+ }
+ }
+
/* need to do gmc hw init early so we can allocate gpu mem */
if (adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_GMC) {
r = amdgpu_device_vram_scratch_init(adev);
@@ -1372,8 +1386,7 @@ static int amdgpu_device_ip_init(struct amdgpu_device *adev)
for (i = 0; i < adev->num_ip_blocks; i++) {
if (!adev->ip_blocks[i].status.sw)
continue;
- /* gmc hw init is done early */
- if (adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_GMC)
+ if (adev->ip_blocks[i].status.hw)
continue;
r = adev->ip_blocks[i].version->funcs->hw_init((void *)adev);
if (r) {
@@ -1914,6 +1927,9 @@ int amdgpu_device_init(struct amdgpu_device *adev,
if (runtime)
vga_switcheroo_init_domain_pm_ops(adev->dev, &adev->vga_pm_domain);
+ if (amdgpu_emu_mode == 1)
+ goto fence_driver_init;
+
/* Read BIOS */
if (!amdgpu_get_bios(adev)) {
r = -EINVAL;
@@ -1966,6 +1982,7 @@ int amdgpu_device_init(struct amdgpu_device *adev,
amdgpu_atombios_i2c_init(adev);
}
+fence_driver_init:
/* Fence driver */
r = amdgpu_fence_driver_init(adev);
if (r) {
@@ -2108,7 +2125,10 @@ void amdgpu_device_fini(struct amdgpu_device *adev)
/* free i2c buses */
if (!amdgpu_device_has_dc_support(adev))
amdgpu_i2c_fini(adev);
- amdgpu_atombios_fini(adev);
+
+ if (amdgpu_emu_mode != 1)
+ amdgpu_atombios_fini(adev);
+
kfree(adev->bios);
adev->bios = NULL;
if (!pci_is_thunderbolt_attached(adev->pdev))
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
index 5a5ed47..fdd24d5 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
@@ -130,6 +130,7 @@
int amdgpu_lbpw = -1;
int amdgpu_compute_multipipe = -1;
int amdgpu_gpu_recovery = -1; /* auto */
+int amdgpu_emu_mode = 0;
MODULE_PARM_DESC(vramlimit, "Restrict VRAM for testing, in megabytes");
module_param_named(vramlimit, amdgpu_vram_limit, int, 0600);
@@ -285,6 +286,9 @@
MODULE_PARM_DESC(gpu_recovery, "Enable GPU recovery mechanism, (1 = enable, 0 = disable, -1 = auto");
module_param_named(gpu_recovery, amdgpu_gpu_recovery, int, 0444);
+MODULE_PARM_DESC(emu_mode, "Emulation mode, (1 = enable, 0 = disable");
+module_param_named(emu_mode, amdgpu_emu_mode, int, 0444);
+
#ifdef CONFIG_DRM_AMDGPU_SI
#if defined(CONFIG_DRM_RADEON) || defined(CONFIG_DRM_RADEON_MODULE)
--
1.9.1
