* Danilo Krummrich <dakr@xxxxxxxxxx> [230606 18:32]:
> Provide the driver indirection iterating over all DRM GPU VA spaces to
> enable the common 'gpuvas' debugfs file for dumping DRM GPU VA spaces.
>
> Signed-off-by: Danilo Krummrich <dakr@xxxxxxxxxx>
> ---
> drivers/gpu/drm/nouveau/nouveau_debugfs.c | 39 +++++++++++++++++++++++
> 1 file changed, 39 insertions(+)
>
> diff --git a/drivers/gpu/drm/nouveau/nouveau_debugfs.c b/drivers/gpu/drm/nouveau/nouveau_debugfs.c
> index 99d022a91afc..053f703f2f68 100644
> --- a/drivers/gpu/drm/nouveau/nouveau_debugfs.c
> +++ b/drivers/gpu/drm/nouveau/nouveau_debugfs.c
> @@ -203,6 +203,44 @@ nouveau_debugfs_pstate_open(struct inode *inode, struct file *file)
> return single_open(file, nouveau_debugfs_pstate_get, inode->i_private);
> }
>
> +static void
> +nouveau_debugfs_gpuva_regions(struct seq_file *m, struct nouveau_uvmm *uvmm)
> +{
> + MA_STATE(mas, &uvmm->region_mt, 0, 0);
> + struct nouveau_uvma_region *reg;
> +
> + seq_puts (m, " VA regions | start | range | end \n");
> + seq_puts (m, "----------------------------------------------------------------------------\n");
rcu_read_lock();
> + mas_for_each(&mas, reg, ULONG_MAX)
> + seq_printf(m, " | 0x%016llx | 0x%016llx | 0x%016llx\n",
> + reg->va.addr, reg->va.range, reg->va.addr + reg->va.range);
rcu_read_unlock();
> +}
> +
> +static int
> +nouveau_debugfs_gpuva(struct seq_file *m, void *data)
> +{
> + struct drm_info_node *node = (struct drm_info_node *) m->private;
> + struct nouveau_drm *drm = nouveau_drm(node->minor->dev);
> + struct nouveau_cli *cli;
> +
> + mutex_lock(&drm->clients_lock);
> + list_for_each_entry(cli, &drm->clients, head) {
> + struct nouveau_uvmm *uvmm = nouveau_cli_uvmm(cli);
> +
> + if (!uvmm)
> + continue;
> +
> + nouveau_uvmm_lock(uvmm);
> + drm_debugfs_gpuva_info(m, &uvmm->umgr);
> + seq_puts(m, "\n");
> + nouveau_debugfs_gpuva_regions(m, uvmm);
> + nouveau_uvmm_unlock(uvmm);
> + }
> + mutex_unlock(&drm->clients_lock);
> +
> + return 0;
> +}
> +
> static const struct file_operations nouveau_pstate_fops = {
> .owner = THIS_MODULE,
> .open = nouveau_debugfs_pstate_open,
> @@ -214,6 +252,7 @@ static const struct file_operations nouveau_pstate_fops = {
> static struct drm_info_list nouveau_debugfs_list[] = {
> { "vbios.rom", nouveau_debugfs_vbios_image, 0, NULL },
> { "strap_peek", nouveau_debugfs_strap_peek, 0, NULL },
> + DRM_DEBUGFS_GPUVA_INFO(nouveau_debugfs_gpuva, NULL),
> };
> #define NOUVEAU_DEBUGFS_ENTRIES ARRAY_SIZE(nouveau_debugfs_list)
>
> --
> 2.40.1
>
