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gpu: nvgpu: add API to extract gk20a pointer from cdev

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Add new API nvgpu_get_gk20a_from_cdev() that extracts gk20a pointer
from cdev pointer. This helps in keeping cdev related implementation
details in ioctl.c and away from other device ioctl files.

Also move struct nvgpu_cdev, nvgpu_class, and nvgpu_cdev_class_priv_data
from os_linux.h to ioctl.h since all of these structures are more IOCTL
related and better to keep them in ioctl specific header.

Jira NVGPU-5648

Change-Id: Ifad8454fd727ae2389ccf3d1ba492551ef1613ac
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2435466
Reviewed-by: automaticguardword <automaticguardword@nvidia.com>
Reviewed-by: Lakshmanan M <lm@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
GVS: Gerrit_Virtual_Submit
This commit is contained in:
Deepak Nibade
2020-10-22 12:42:01 +05:30
committed by Alex Waterman
parent d0a1f30e66
commit be9271d721
11 changed files with 68 additions and 52 deletions
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46
drivers/gpu/nvgpu/os/linux/ioctl.h
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@@ -13,12 +13,56 @@
#ifndef __NVGPU_IOCTL_H__
#define __NVGPU_IOCTL_H__
#include <linux/cdev.h>
#include <nvgpu/types.h>
#include <nvgpu/list.h>
struct device;
struct nvgpu_cdev;
struct class;
struct nvgpu_cdev {
struct cdev cdev;
struct device *node;
struct class *class;
struct nvgpu_list_node list_entry;
};
static inline struct nvgpu_cdev *
nvgpu_cdev_from_list_entry(struct nvgpu_list_node *node)
{
return (struct nvgpu_cdev *)
((uintptr_t)node - offsetof(struct nvgpu_cdev, list_entry));
};
struct nvgpu_cdev_class_priv_data {
char class_name[64];
u32 local_instance_id;
u32 major_instance_id;
u32 minor_instance_id;
bool pci;
};
struct nvgpu_class {
struct class *class;
struct nvgpu_list_node list_entry;
struct nvgpu_cdev_class_priv_data *priv_data;
enum nvgpu_mig_gpu_instance_type instance_type;
};
static inline struct nvgpu_class *
nvgpu_class_from_list_entry(struct nvgpu_list_node *node)
{
return (struct nvgpu_class *)
((uintptr_t)node - offsetof(struct nvgpu_class, list_entry));
};
int gk20a_user_init(struct device *dev);
void gk20a_user_deinit(struct device *dev);
struct gk20a *nvgpu_get_gk20a_from_cdev(struct nvgpu_cdev *cdev);
u32 nvgpu_get_gpu_instance_id_from_cdev(struct gk20a *g, struct nvgpu_cdev *cdev);
#endif