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gpu: nvgpu: rmmod support in dgpu simulation

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Changes added to support "rmmod nvgpu" in dgpu simulation after gpu
poweron.

nvgpu_engine-wait_for_idle got stuck in busy mode for nvdec and nvec
engines in simulation as simulation doesnt support timeout.
These engines are not valid engines in nvgpu engine list.
Add nvgpu_engine_check_valid_id before checking engine status.

Simulation crash on accessing 0xb81604 top interrupt register.
Add func_priv_cpu_intr_top__size_1_v() function to get the supported
size than using default MAX_INTR_TOP_REGS.

nvlink is not supprted in dgpu simulation. Avoid warning for
-ENODEV return.

Avoid register read following gpu power off completion.

Bug 2498574

Change-Id: I9f9f1cf1ac4620242bda1d2cc0f29f51f81a6711
Signed-off-by: vinodg <vinodg@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2179930
Reviewed-by: Seshendra Gadagottu <sgadagottu@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
This commit is contained in:
vinodg
2019-08-20 23:58:23 -07:00
committed by mobile promotions
parent d93e82dedb
commit 087d4d3df4
6 changed files with 17 additions and 10 deletions
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10
drivers/gpu/nvgpu/os/linux/pci.c
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@@ -605,7 +605,10 @@ static void nvgpu_pci_remove(struct pci_dev *pdev)
WARN(err, "gpu failed to clear pci power");
err = nvgpu_nvlink_deinit(g);
WARN(err, "gpu failed to remove nvlink");
/* ENODEV is a legal error if there is no NVLINK */
if (err != -ENODEV) {
WARN(err, "gpu failed to remove nvlink");
}
gk20a_driver_start_unload(g);
@@ -655,7 +658,10 @@ void nvgpu_pci_shutdown(struct pci_dev *pdev)
if (is_nvgpu_gpu_state_valid(g)) {
err = nvgpu_nvlink_deinit(g);
WARN(err, "gpu failed to remove nvlink");
/* ENODEV is a legal error if there is no NVLINK */
if (err != -ENODEV) {
WARN(err, "gpu failed to remove nvlink");
}
} else
nvgpu_err(g, "skipped nvlink deinit");