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author | Gerd Hoffmann <kraxel@redhat.com> | 2019-09-04 07:47:35 +0200 |
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committer | Gerd Hoffmann <kraxel@redhat.com> | 2019-09-10 08:53:08 +0200 |
commit | ff540b76f14ac9922eb91894ebc1fab335e8be7e (patch) | |
tree | b6c7eb4101338baef157384b990f9c0199f16219 /drivers/gpu/drm/drm_gem_ttm_helper.c | |
parent | 2dc5d44ccc5e7f032dbea2735b243f7f50ff863e (diff) | |
download | linux-ff540b76f14ac9922eb91894ebc1fab335e8be7e.tar.gz linux-ff540b76f14ac9922eb91894ebc1fab335e8be7e.tar.bz2 linux-ff540b76f14ac9922eb91894ebc1fab335e8be7e.zip |
drm/ttm: add drm gem ttm helpers, starting with drm_gem_ttm_print_info()
Now with ttm_buffer_object being a subclass of drm_gem_object we can
easily lookup ttm_buffer_object for a given drm_gem_object, which in
turn allows to create common helper functions.
This patch starts off with a drm_gem_ttm_print_info() helper function
which adds some ttm specific lines to the debug output.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20190904054740.20817-3-kraxel@redhat.com
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"); |