Commit 82d750e9 authored by Danilo Krummrich's avatar Danilo Krummrich
Browse files

drm/nouveau: debugfs: implement DRM GPU VA debugfs 



Provide the driver indirection iterating over all DRM GPU VA spaces to
enable the common 'gpuvas' debugfs file for dumping DRM GPU VA spaces.

Reviewed-by: default avatarDave Airlie <airlied@redhat.com>
Signed-off-by: default avatarDanilo Krummrich <dakr@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230804182406.5222-13-dakr@redhat.com
parent b88baab8

drivers/gpu/drm/nouveau/nouveau_debugfs.c

+39 −0
Original line number Diff line number Diff line
@@ -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");

	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);

}



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)