diff options
Diffstat (limited to 'drivers/gpu/drm/drm_gem_ttm_helper.c')
-rw-r--r-- | drivers/gpu/drm/drm_gem_ttm_helper.c | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_gem_ttm_helper.c b/drivers/gpu/drm/drm_gem_ttm_helper.c new file mode 100644 index 000000000000..9a4bafcf20df --- /dev/null +++ b/drivers/gpu/drm/drm_gem_ttm_helper.c @@ -0,0 +1,56 @@ +// SPDX-License-Identifier: GPL-2.0-or-later + +#include <linux/module.h> + +#include <drm/drm_gem_ttm_helper.h> + +/** + * DOC: overview + * + * This library provides helper functions for gem objects backed by + * ttm. + */ + +/** + * drm_gem_ttm_print_info() - Print &ttm_buffer_object info for debugfs + * @p: DRM printer + * @indent: Tab indentation level + * @gem: GEM object + * + * This function can be used as &drm_gem_object_funcs.print_info + * callback. + */ +void drm_gem_ttm_print_info(struct drm_printer *p, unsigned int indent, + const struct drm_gem_object *gem) +{ + static const char const *plname[] = { + [ TTM_PL_SYSTEM ] = "system", + [ TTM_PL_TT ] = "tt", + [ TTM_PL_VRAM ] = "vram", + [ TTM_PL_PRIV ] = "priv", + + [ 16 ] = "cached", + [ 17 ] = "uncached", + [ 18 ] = "wc", + [ 19 ] = "contig", + + [ 21 ] = "pinned", /* NO_EVICT */ + [ 22 ] = "topdown", + }; + const struct ttm_buffer_object *bo = drm_gem_ttm_of_gem(gem); + + drm_printf_indent(p, indent, "placement="); + drm_print_bits(p, bo->mem.placement, plname, 0, ARRAY_SIZE(plname)); + drm_printf(p, "\n"); + + if (bo->mem.bus.is_iomem) { + drm_printf_indent(p, indent, "bus.base=%lx\n", + (unsigned long)bo->mem.bus.base); + drm_printf_indent(p, indent, "bus.offset=%lx\n", + (unsigned long)bo->mem.bus.offset); + } +} +EXPORT_SYMBOL(drm_gem_ttm_print_info); + +MODULE_DESCRIPTION("DRM gem ttm helpers"); +MODULE_LICENSE("GPL"); |