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gpu: nvgpu: poweron for manual mode scheduling

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Manual mode scheduling is incompatible with Runtime PM,
Added busy() and idle() calls during open/close of
control-fifo nodes.

Also, added functions to handle for the extra ref during
SC7 suspend/resume.

Jira NVGPU-8619

Signed-off-by: Debarshi Dutta <ddutta@nvidia.com>
Change-Id: Ic8003c90a4535c2db3aef8f8d78b9dc4a6590b1f
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2766058
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
This commit is contained in:
Debarshi Dutta
2022-08-26 10:54:08 +05:30
committed by mobile promotions
parent e4d1a739da
commit 1e2817e022
4 changed files with 58 additions and 2 deletions
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14
drivers/gpu/nvgpu/os/linux/ioctl_nvs.c
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@@ -609,24 +609,34 @@ int nvgpu_nvs_ctrl_fifo_ops_open(struct inode *inode, struct file *filp)
struct nvgpu_cdev *cdev;
struct gk20a *g;
int pid;
int err = 0;
struct nvgpu_nvs_domain_ctrl_fifo_user_linux *linux_user;
bool writable = filp->f_mode & FMODE_WRITE;
cdev = container_of(inode->i_cdev, struct nvgpu_cdev, cdev);
g = nvgpu_get_gk20a_from_cdev(cdev);
err = gk20a_busy(g);
if (err != 0) {
nvgpu_err(g, "Unable to power on the device");
return err;
}
if (!nvgpu_is_enabled(g, NVGPU_SUPPORT_NVS_CTRL_FIFO)) {
gk20a_idle(g);
return -EOPNOTSUPP;
}
pid = nvgpu_current_pid(g);
if (nvgpu_nvs_ctrl_fifo_user_exists(g->sched_ctrl_fifo, pid, writable)) {
nvgpu_err(g, "User already exists");
gk20a_idle(g);
return -EEXIST;
}
linux_user = nvgpu_kzalloc(g, sizeof(*linux_user));
if (linux_user == NULL) {
gk20a_idle(g);
return -ENOMEM;
}
@@ -638,7 +648,6 @@ int nvgpu_nvs_ctrl_fifo_ops_open(struct inode *inode, struct file *filp)
nvgpu_nvs_ctrl_fifo_add_user(g->sched_ctrl_fifo, &linux_user->user);
filp->private_data = linux_user;
nvgpu_get(g);
return 0;
}
@@ -660,6 +669,7 @@ int nvgpu_nvs_ctrl_fifo_ops_release(struct inode *inode, struct file *filp)
if (nvgpu_nvs_ctrl_fifo_user_is_active(&linux_user->user)) {
err = -EBUSY;
return err;
}
if (nvgpu_nvs_ctrl_fifo_is_exclusive_user(g->sched_ctrl_fifo, &linux_user->user)) {
@@ -674,7 +684,7 @@ int nvgpu_nvs_ctrl_fifo_ops_release(struct inode *inode, struct file *filp)
filp->private_data = NULL;
nvgpu_kfree(g, linux_user);
nvgpu_put(g);
gk20a_idle(g);
return err;
}