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gpu: nvgpu: suspend/resume support for vGPU

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- Added suspend/resume power management callbacks for vGPU
- Added suspend/resume commands for communication between vGPU and
  RM server
- Added suspend/resume message parameters for IVC messages between
  vGPU and RM server

JIRA EVLR-2305
JIRA EVLR-2306

Change-Id: I83a314b4e125a53117d16c5ea72dbc5d8ef96ef7
Signed-off-by: Deepak Bhosale <dbhosale@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1735153
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Richard Zhao <rizhao@nvidia.com>
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Nirav Patel <nipatel@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
This commit is contained in:
Deepak Bhosale
2018-05-30 13:12:24 -07:00
committed by mobile promotions
parent 90fc8d653f
commit e4e2c18828
7 changed files with 90 additions and 8 deletions
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34
drivers/gpu/nvgpu/os/linux/module.c
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@@ -967,9 +967,15 @@ static int gk20a_pm_suspend(struct device *dev)
int idle_usage_count = 0;
if (!g->power_on) {
if (platform->suspend)
ret = platform->suspend(dev);
if (ret)
return ret;
if (!pm_runtime_enabled(dev))
gk20a_pm_railgate(dev);
return 0;
ret = gk20a_pm_railgate(dev);
return ret;
}
if (nvgpu_atomic_read(&g->usage_count) > idle_usage_count)
@@ -980,25 +986,41 @@ static int gk20a_pm_suspend(struct device *dev)
return ret;
if (platform->suspend)
platform->suspend(dev);
ret = platform->suspend(dev);
if (ret)
return ret;
g->suspended = true;
return 0;
return ret;
}
static int gk20a_pm_resume(struct device *dev)
{
struct gk20a_platform *platform = dev_get_drvdata(dev);
struct gk20a *g = get_gk20a(dev);
int ret = 0;
if (!g->suspended) {
if (platform->resume)
ret = platform->resume(dev);
if (ret)
return ret;
if (!pm_runtime_enabled(dev))
gk20a_pm_unrailgate(dev);
return 0;
ret = gk20a_pm_unrailgate(dev);
return ret;
}
if (platform->resume)
ret = platform->resume(dev);
if (ret)
return ret;
ret = gk20a_pm_runtime_resume(dev);
if (ret)
return ret;
g->suspended = false;