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From 98d2f11975a8c7465a967fc9d3bd9d06a463786c Mon Sep 17 00:00:00 2001
From: Shaoyun Liu <Shaoyun.Liu@amd.com>
Date: Thu, 1 Feb 2018 17:37:50 -0500
Subject: [PATCH 3528/4131] drm/amdgpu: Basic emulation support
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
Signed-off-by: Shaoyun Liu <Shaoyun.Liu@amd.com>
Acked-By: Alex Deucher <alexander.deucher@amd.com>
Acked-By: Christian Konig <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Kalyan Alle <kalyan.alle@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 26 +++++++++++++++++++++++---
1 file changed, 23 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 08f7b78..1aab1a3 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -1336,6 +1336,20 @@ 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);
@@ -1369,8 +1383,7 @@ 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))
--
2.7.4
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