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gpu: nvgpu: fix deinit of GR

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Existing implementation of GR de-init doesn't account for multiple
instances of struct nvgpu_gr. As a fix, below changes are added.

1) nvgpu_gr_free is unified for VGPU as well as native.
2) All the GR instances are freed.
3) Appropriate NULL checks are added when freeing GR memories.
4) 2D, 3D, I2M and ZBC etc are explicitely disabled when MIG is set.
5) In ioctl_ctrl, checks are added to not return error when zbc is NULL
   for VGPU as requests are rerouted to RMserver.

Jira NVGPU-6920

Change-Id: Icaa40f88f523c2cdbfe3a4fd6a55681ea7a83d12
Signed-off-by: Debarshi Dutta <ddutta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2578500
Reviewed-by: svc_kernel_abi <svc_kernel_abi@nvidia.com>
Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>
Reviewed-by: Dinesh T <dt@nvidia.com>
Reviewed-by: Seshendra Gadagottu <sgadagottu@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: Antony Clince Alex <aalex@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
GVS: Gerrit_Virtual_Submit
This commit is contained in:
Debarshi Dutta
2021-08-18 10:44:53 +05:30
committed by mobile promotions
parent b9696ee643
commit 2e3c3aada6
7 changed files with 54 additions and 34 deletions
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4
drivers/gpu/nvgpu/common/init/nvgpu_init.c
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@@ -1030,6 +1030,10 @@ int nvgpu_init_gpu_characteristics(struct gk20a *g)
nvgpu_set_enabled(g, NVGPU_SUPPORT_I2M, true);
nvgpu_set_enabled(g, NVGPU_SUPPORT_ZBC, true);
} else {
nvgpu_set_enabled(g, NVGPU_SUPPORT_2D, false);
nvgpu_set_enabled(g, NVGPU_SUPPORT_3D, false);
nvgpu_set_enabled(g, NVGPU_SUPPORT_I2M, false);
nvgpu_set_enabled(g, NVGPU_SUPPORT_ZBC, false);
nvgpu_set_enabled(g, NVGPU_SUPPORT_ZBC_STENCIL, false);
nvgpu_set_enabled(g, NVGPU_SUPPORT_PREEMPTION_GFXP, false);
}