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|
// SPDX-License-Identifier: GPL-2.0-only OR MIT
/*
* Copyright (C) 2020-2024 Intel Corporation
*/
#include <drm/drm_file.h>
#include <linux/pm_runtime.h>
#include "ivpu_drv.h"
#include "ivpu_gem.h"
#include "ivpu_hw.h"
#include "ivpu_jsm_msg.h"
#include "ivpu_ms.h"
#include "ivpu_pm.h"
#define MS_INFO_BUFFER_SIZE SZ_64K
#define MS_NUM_BUFFERS 2
#define MS_READ_PERIOD_MULTIPLIER 2
#define MS_MIN_SAMPLE_PERIOD_NS 1000000
static struct ivpu_ms_instance *
get_instance_by_mask(struct ivpu_file_priv *file_priv, u64 metric_mask)
{
struct ivpu_ms_instance *ms;
lockdep_assert_held(&file_priv->ms_lock);
list_for_each_entry(ms, &file_priv->ms_instance_list, ms_instance_node)
if (ms->mask == metric_mask)
return ms;
return NULL;
}
int ivpu_ms_start_ioctl(struct drm_device *dev, void *data, struct drm_file *file)
{
struct ivpu_file_priv *file_priv = file->driver_priv;
struct drm_ivpu_metric_streamer_start *args = data;
struct ivpu_device *vdev = file_priv->vdev;
struct ivpu_ms_instance *ms;
u32 sample_size;
u64 buf_size;
int ret;
if (!args->metric_group_mask || !args->read_period_samples ||
args->sampling_period_ns < MS_MIN_SAMPLE_PERIOD_NS)
return -EINVAL;
ret = ivpu_rpm_get(vdev);
if (ret < 0)
return ret;
mutex_lock(&file_priv->ms_lock);
if (get_instance_by_mask(file_priv, args->metric_group_mask)) {
ivpu_dbg(vdev, IOCTL, "Instance already exists (mask %#llx)\n",
args->metric_group_mask);
ret = -EALREADY;
goto unlock;
}
ms = kzalloc(sizeof(*ms), GFP_KERNEL);
if (!ms) {
ret = -ENOMEM;
goto unlock;
}
ms->mask = args->metric_group_mask;
ret = ivpu_jsm_metric_streamer_info(vdev, ms->mask, 0, 0, &sample_size, NULL);
if (ret)
goto err_free_ms;
buf_size = PAGE_ALIGN((u64)args->read_period_samples * sample_size *
MS_READ_PERIOD_MULTIPLIER * MS_NUM_BUFFERS);
if (buf_size > ivpu_hw_range_size(&vdev->hw->ranges.global)) {
ivpu_dbg(vdev, IOCTL, "Requested MS buffer size %llu exceeds range size %llu\n",
buf_size, ivpu_hw_range_size(&vdev->hw->ranges.global));
ret = -EINVAL;
goto err_free_ms;
}
ms->bo = ivpu_bo_create_global(vdev, buf_size, DRM_IVPU_BO_CACHED | DRM_IVPU_BO_MAPPABLE);
if (!ms->bo) {
ivpu_dbg(vdev, IOCTL, "Failed to allocate MS buffer (size %llu)\n", buf_size);
ret = -ENOMEM;
goto err_free_ms;
}
ms->buff_size = ivpu_bo_size(ms->bo) / MS_NUM_BUFFERS;
ms->active_buff_vpu_addr = ms->bo->vpu_addr;
ms->inactive_buff_vpu_addr = ms->bo->vpu_addr + ms->buff_size;
ms->active_buff_ptr = ivpu_bo_vaddr(ms->bo);
ms->inactive_buff_ptr = ivpu_bo_vaddr(ms->bo) + ms->buff_size;
ret = ivpu_jsm_metric_streamer_start(vdev, ms->mask, args->sampling_period_ns,
ms->active_buff_vpu_addr, ms->buff_size);
if (ret)
goto err_free_bo;
args->sample_size = sample_size;
args->max_data_size = ivpu_bo_size(ms->bo);
list_add_tail(&ms->ms_instance_node, &file_priv->ms_instance_list);
goto unlock;
err_free_bo:
ivpu_bo_free(ms->bo);
err_free_ms:
kfree(ms);
unlock:
mutex_unlock(&file_priv->ms_lock);
ivpu_rpm_put(vdev);
return ret;
}
static int
copy_leftover_bytes(struct ivpu_ms_instance *ms,
void __user *user_ptr, u64 user_size, u64 *user_bytes_copied)
{
u64 copy_bytes;
if (ms->leftover_bytes) {
copy_bytes = min(user_size - *user_bytes_copied, ms->leftover_bytes);
if (copy_to_user(user_ptr + *user_bytes_copied, ms->leftover_addr, copy_bytes))
return -EFAULT;
ms->leftover_bytes -= copy_bytes;
ms->leftover_addr += copy_bytes;
*user_bytes_copied += copy_bytes;
}
return 0;
}
static int
copy_samples_to_user(struct ivpu_device *vdev, struct ivpu_ms_instance *ms,
void __user *user_ptr, u64 user_size, u64 *user_bytes_copied)
{
u64 bytes_written;
int ret;
*user_bytes_copied = 0;
ret = copy_leftover_bytes(ms, user_ptr, user_size, user_bytes_copied);
if (ret)
return ret;
if (*user_bytes_copied == user_size)
return 0;
ret = ivpu_jsm_metric_streamer_update(vdev, ms->mask, ms->inactive_buff_vpu_addr,
ms->buff_size, &bytes_written);
if (ret)
return ret;
swap(ms->active_buff_vpu_addr, ms->inactive_buff_vpu_addr);
swap(ms->active_buff_ptr, ms->inactive_buff_ptr);
ms->leftover_bytes = bytes_written;
ms->leftover_addr = ms->inactive_buff_ptr;
return copy_leftover_bytes(ms, user_ptr, user_size, user_bytes_copied);
}
int ivpu_ms_get_data_ioctl(struct drm_device *dev, void *data, struct drm_file *file)
{
struct drm_ivpu_metric_streamer_get_data *args = data;
struct ivpu_file_priv *file_priv = file->driver_priv;
struct ivpu_device *vdev = file_priv->vdev;
struct ivpu_ms_instance *ms;
u64 bytes_written;
int ret;
if (!args->metric_group_mask)
return -EINVAL;
ret = ivpu_rpm_get(vdev);
if (ret < 0)
return ret;
mutex_lock(&file_priv->ms_lock);
ms = get_instance_by_mask(file_priv, args->metric_group_mask);
if (!ms) {
ivpu_dbg(vdev, IOCTL, "Instance doesn't exist for mask: %#llx\n",
args->metric_group_mask);
ret = -EINVAL;
goto unlock;
}
if (!args->buffer_size) {
ret = ivpu_jsm_metric_streamer_update(vdev, ms->mask, 0, 0, &bytes_written);
if (ret)
goto unlock;
args->data_size = bytes_written + ms->leftover_bytes;
goto unlock;
}
if (!args->buffer_ptr) {
ret = -EINVAL;
goto unlock;
}
ret = copy_samples_to_user(vdev, ms, u64_to_user_ptr(args->buffer_ptr),
args->buffer_size, &args->data_size);
unlock:
mutex_unlock(&file_priv->ms_lock);
ivpu_rpm_put(vdev);
return ret;
}
static void free_instance(struct ivpu_file_priv *file_priv, struct ivpu_ms_instance *ms)
{
lockdep_assert_held(&file_priv->ms_lock);
list_del(&ms->ms_instance_node);
ivpu_jsm_metric_streamer_stop(file_priv->vdev, ms->mask);
ivpu_bo_free(ms->bo);
kfree(ms);
}
int ivpu_ms_stop_ioctl(struct drm_device *dev, void *data, struct drm_file *file)
{
struct ivpu_file_priv *file_priv = file->driver_priv;
struct drm_ivpu_metric_streamer_stop *args = data;
struct ivpu_device *vdev = file_priv->vdev;
struct ivpu_ms_instance *ms;
int ret;
if (!args->metric_group_mask)
return -EINVAL;
ret = ivpu_rpm_get(vdev);
if (ret < 0)
return ret;
mutex_lock(&file_priv->ms_lock);
ms = get_instance_by_mask(file_priv, args->metric_group_mask);
if (ms)
free_instance(file_priv, ms);
mutex_unlock(&file_priv->ms_lock);
ivpu_rpm_put(vdev);
return ms ? 0 : -EINVAL;
}
static inline struct ivpu_bo *get_ms_info_bo(struct ivpu_file_priv *file_priv)
{
lockdep_assert_held(&file_priv->ms_lock);
if (file_priv->ms_info_bo)
return file_priv->ms_info_bo;
file_priv->ms_info_bo = ivpu_bo_create_global(file_priv->vdev, MS_INFO_BUFFER_SIZE,
DRM_IVPU_BO_CACHED | DRM_IVPU_BO_MAPPABLE);
return file_priv->ms_info_bo;
}
int ivpu_ms_get_info_ioctl(struct drm_device *dev, void *data, struct drm_file *file)
{
struct drm_ivpu_metric_streamer_get_data *args = data;
struct ivpu_file_priv *file_priv = file->driver_priv;
struct ivpu_device *vdev = file_priv->vdev;
struct ivpu_bo *bo;
u64 info_size;
int ret;
if (!args->metric_group_mask)
return -EINVAL;
if (!args->buffer_size)
return ivpu_jsm_metric_streamer_info(vdev, args->metric_group_mask,
0, 0, NULL, &args->data_size);
if (!args->buffer_ptr)
return -EINVAL;
mutex_lock(&file_priv->ms_lock);
bo = get_ms_info_bo(file_priv);
if (!bo) {
ret = -ENOMEM;
goto unlock;
}
ret = ivpu_jsm_metric_streamer_info(vdev, args->metric_group_mask, bo->vpu_addr,
ivpu_bo_size(bo), NULL, &info_size);
if (ret)
goto unlock;
if (args->buffer_size < info_size) {
ret = -ENOSPC;
goto unlock;
}
if (copy_to_user(u64_to_user_ptr(args->buffer_ptr), ivpu_bo_vaddr(bo), info_size))
ret = -EFAULT;
args->data_size = info_size;
unlock:
mutex_unlock(&file_priv->ms_lock);
return ret;
}
void ivpu_ms_cleanup(struct ivpu_file_priv *file_priv)
{
struct ivpu_ms_instance *ms, *tmp;
struct ivpu_device *vdev = file_priv->vdev;
pm_runtime_get_sync(vdev->drm.dev);
mutex_lock(&file_priv->ms_lock);
if (file_priv->ms_info_bo) {
ivpu_bo_free(file_priv->ms_info_bo);
file_priv->ms_info_bo = NULL;
}
list_for_each_entry_safe(ms, tmp, &file_priv->ms_instance_list, ms_instance_node)
free_instance(file_priv, ms);
mutex_unlock(&file_priv->ms_lock);
pm_runtime_put_autosuspend(vdev->drm.dev);
}
void ivpu_ms_cleanup_all(struct ivpu_device *vdev)
{
struct ivpu_file_priv *file_priv;
unsigned long ctx_id;
mutex_lock(&vdev->context_list_lock);
xa_for_each(&vdev->context_xa, ctx_id, file_priv)
ivpu_ms_cleanup(file_priv);
mutex_unlock(&vdev->context_list_lock);
}
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