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accel/ivpu: Add resume engine support

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Create debugfs interface that triggers sending resume engine IPC
command to VPU. It is used to test engine resume functionality in
driver user space tests.

Signed-off-by: Wachowski, Karol <karol.wachowski@intel.com>
Signed-off-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240513120431.3187212-8-jacek.lawrynowicz@linux.intel.com
This commit is contained in:
Wachowski, Karol 2024-05-13 14:04:26 +02:00 committed by Jacek Lawrynowicz
parent 2a18ceff94
commit 68ca7b06b5
1 changed files with 24 additions and 0 deletions
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24
drivers/accel/ivpu/ivpu_debugfs.c
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@ -335,6 +335,28 @@ static const struct file_operations ivpu_reset_engine_fops = {
.write = ivpu_reset_engine_fn,
};
static ssize_t
ivpu_resume_engine_fn(struct file *file, const char __user *user_buf, size_t size, loff_t *pos)
{
struct ivpu_device *vdev = file->private_data;
if (!size)
return -EINVAL;
if (ivpu_jsm_hws_resume_engine(vdev, DRM_IVPU_ENGINE_COMPUTE))
return -ENODEV;
if (ivpu_jsm_hws_resume_engine(vdev, DRM_IVPU_ENGINE_COPY))
return -ENODEV;
return size;
}
static const struct file_operations ivpu_resume_engine_fops = {
.owner = THIS_MODULE,
.open = simple_open,
.write = ivpu_resume_engine_fn,
};
void ivpu_debugfs_init(struct ivpu_device *vdev)
{
struct dentry *debugfs_root = vdev->drm.debugfs_root;
@ -358,6 +380,8 @@ void ivpu_debugfs_init(struct ivpu_device *vdev)
debugfs_create_file("reset_engine", 0200, debugfs_root, vdev,
&ivpu_reset_engine_fops);
debugfs_create_file("resume_engine", 0200, debugfs_root, vdev,
&ivpu_resume_engine_fops);
if (ivpu_hw_gen(vdev) >= IVPU_HW_40XX)
debugfs_create_file("fw_profiling_freq_drive", 0200,