diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c index cab14f25..cafc60ea 100644 --- a/drivers/gpu/drm/drm_fb_helper.c +++ b/drivers/gpu/drm/drm_fb_helper.c @@ -1544,6 +1544,14 @@ int drm_fb_helper_ioctl(struct fb_info *info, unsigned int cmd, ret = 0; goto unlock; +#if defined(CONFIG_UMP) + case GET_UMP_SECURE_ID_BUF1: + ret = drm_get_ump_secure_id(info, fb_helper, arg, 0); + goto unlock; + case GET_UMP_SECURE_ID_BUF2: + ret = drm_get_ump_secure_id(info, fb_helper, arg, 1); + goto unlock; +#endif default: ret = -ENOTTY; } diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile index 8ce07039b..fdf946be3 100644 --- a/drivers/gpu/drm/Makefile +++ b/drivers/gpu/drm/Makefile @@ -44,6 +44,7 @@ drm_kms_helper-$(CONFIG_DRM_DP_AUX_CHARDEV) += drm_dp_aux_dev.o obj-$(CONFIG_DRM_KMS_HELPER) += drm_kms_helper.o obj-$(CONFIG_DRM_DEBUG_MM_SELFTEST) += selftests/ +obj-$(CONFIG_UMP) += drm_fb_ump.o CFLAGS_drm_trace_points.o := -I$(src) diff --git a/include/drm/drm_fb_helper.h b/include/drm/drm_fb_helper.h index b069433e..95657b76 100644 --- a/include/drm/drm_fb_helper.h +++ b/include/drm/drm_fb_helper.h @@ -36,6 +36,10 @@ struct drm_fb_helper; #include #include +#if defined(CONFIG_UMP) +#include +#endif + enum mode_set_atomic { LEAVE_ATOMIC_MODE_SET, ENTER_ATOMIC_MODE_SET, @@ -131,6 +135,8 @@ struct drm_fb_helper_connector { struct drm_connector *connector; }; +#define DRM_FB_UMP_COUNT 1 /* only enable one FB UMP layer */ + /** * struct drm_fb_helper - main structure to emulate fbdev on top of KMS * @fb: Scanout framebuffer object @@ -232,6 +238,9 @@ struct drm_fb_helper { * See also: @deferred_setup */ int preferred_bpp; +#if defined(CONFIG_UMP) + ump_dd_handle ump_wrapped_buffer[DRM_FB_UMP_COUNT][2]; +#endif }; /** @@ -577,4 +586,11 @@ drm_fb_helper_remove_conflicting_framebuffers(struct apertures_struct *a, #endif } +#if defined(CONFIG_UMP) +extern int (*drm_get_ump_secure_id) (struct fb_info *info, + struct drm_fb_helper *g_fbi, unsigned long arg, int buf); +#define GET_UMP_SECURE_ID_BUF1 _IOWR('m', 311, unsigned int) +#define GET_UMP_SECURE_ID_BUF2 _IOWR('m', 312, unsigned int) +#endif + #endif --- /dev/null 2018-07-12 16:39:19.544000000 +0200 +++ b/drivers/gpu/drm/drm_fb_ump.c 2018-07-22 22:20:45.166145058 +0200 @@ -0,0 +1,71 @@ +/* + * Copyright (C) 2016 Hardkernel Co. Ltd. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include + +#include +#include +#include +#include +#include + +int (*drm_get_ump_secure_id) (struct fb_info *info, + struct drm_fb_helper *g_fbi, unsigned long arg, int buf); +EXPORT_SYMBOL(drm_get_ump_secure_id); + +static int _drm_get_ump_secure_id(struct fb_info *info, + struct drm_fb_helper *g_fbi, unsigned long arg, int buf) +{ + u32 __user *psecureid = (u32 __user *) arg; + ump_secure_id secure_id; + + if (!g_fbi->ump_wrapped_buffer[info->node][buf]) { + ump_dd_physical_block ump_memory_description; + printk("ump: create disp: %d\n", buf); + + ump_memory_description.addr = info->fix.smem_start; + ump_memory_description.size = info->fix.smem_len; + g_fbi->ump_wrapped_buffer[info->node][buf] = + ump_dd_handle_create_from_phys_blocks( + &ump_memory_description, 1); + } + secure_id = ump_dd_secure_id_get( + g_fbi->ump_wrapped_buffer[info->node][buf]); + + return put_user((unsigned int)secure_id, psecureid); +} + +static int __init drm_ump_module_init(void) +{ + int ret = 0; + drm_get_ump_secure_id = _drm_get_ump_secure_id; + return ret; +} + +static void __exit drm_ump_module_exit(void) +{ + drm_get_ump_secure_id = NULL; +} + +module_init(drm_ump_module_init); +module_exit(drm_ump_module_exit); + +MODULE_AUTHOR("Mauro Ribeiro "); +MODULE_DESCRIPTION("UMP Glue for DRM Framebuffer"); +MODULE_LICENSE("GPL");