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Subject[PATCH 3/4] drm/msm: add uapi to get/set debug name
Date
Add UAPI to get/set GEM objects' debug name.

Signed-off-by: Rob Clark <robdclark@gmail.com>
---
drivers/gpu/drm/msm/msm_drv.c | 36 ++++++++++++++++++++++++++++++++++-
include/uapi/drm/msm_drm.h | 2 ++
2 files changed, 37 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c
index 913f5b3642b5..6ebbd5010722 100644
--- a/drivers/gpu/drm/msm/msm_drv.c
+++ b/drivers/gpu/drm/msm/msm_drv.c
@@ -23,6 +23,7 @@
#include "msm_drv.h"
#include "msm_debugfs.h"
#include "msm_fence.h"
+#include "msm_gem.h"
#include "msm_gpu.h"
#include "msm_kms.h"

@@ -861,7 +862,8 @@ static int msm_ioctl_gem_info(struct drm_device *dev, void *data,
{
struct drm_msm_gem_info *args = data;
struct drm_gem_object *obj;
- int ret = 0;
+ struct msm_gem_object *msm_obj;
+ int i, ret = 0;

switch (args->info) {
case MSM_INFO_GET_OFFSET:
@@ -870,6 +872,9 @@ static int msm_ioctl_gem_info(struct drm_device *dev, void *data,
if (args->len)
return -EINVAL;
break;
+ case MSM_INFO_SET_NAME:
+ case MSM_INFO_GET_NAME:
+ break;
default:
return -EINVAL;
}
@@ -878,6 +883,8 @@ static int msm_ioctl_gem_info(struct drm_device *dev, void *data,
if (!obj)
return -ENOENT;

+ msm_obj = to_msm_bo(obj);
+
switch (args->info) {
case MSM_INFO_GET_OFFSET:
args->value = msm_gem_mmap_offset(obj);
@@ -885,6 +892,33 @@ static int msm_ioctl_gem_info(struct drm_device *dev, void *data,
case MSM_INFO_GET_IOVA:
ret = msm_ioctl_gem_info_iova(dev, obj, &args->value);
break;
+ case MSM_INFO_SET_NAME:
+ /* length check should leave room for terminating null: */
+ if (args->len >= sizeof(msm_obj->name)) {
+ ret = -EINVAL;
+ break;
+ }
+ ret = copy_from_user(msm_obj->name,
+ u64_to_user_ptr(args->value), args->len);
+ msm_obj->name[args->len] = '\0';
+ for (i = 0; i < args->len; i++) {
+ if (!isprint(msm_obj->name[i])) {
+ msm_obj->name[i] = '\0';
+ break;
+ }
+ }
+ break;
+ case MSM_INFO_GET_NAME:
+ if (args->value && (args->len < strlen(msm_obj->name))) {
+ ret = -EINVAL;
+ break;
+ }
+ args->len = strlen(msm_obj->name);
+ if (args->value) {
+ ret = copy_to_user(u64_to_user_ptr(args->value),
+ msm_obj->name, args->len);
+ }
+ break;
}

drm_gem_object_put_unlocked(obj);
diff --git a/include/uapi/drm/msm_drm.h b/include/uapi/drm/msm_drm.h
index bc1757848c7c..09f16fd7beda 100644
--- a/include/uapi/drm/msm_drm.h
+++ b/include/uapi/drm/msm_drm.h
@@ -114,6 +114,8 @@ struct drm_msm_gem_new {
*/
#define MSM_INFO_GET_OFFSET 0x00 /* get mmap() offset, returned by value */
#define MSM_INFO_GET_IOVA 0x01 /* get iova, returned by value */
+#define MSM_INFO_SET_NAME 0x02 /* set the debug name (by pointer) */
+#define MSM_INFO_GET_NAME 0x03 /* get debug name, returned by pointer */

struct drm_msm_gem_info {
__u32 handle; /* in */
--
2.19.2
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