drivers/misc/mediatek/gpu/mt8127/mali/mali/linux/mali_ukk_soft_job.c

   1 /*
   2  * This confidential and proprietary software may be used only as
   3  * authorised by a licensing agreement from ARM Limited
   4  * (C) COPYRIGHT 2013-2015 ARM Limited
   5  * ALL RIGHTS RESERVED
   6  * The entire notice above must be reproduced on all authorised
   7  * copies and copies may only be made to the extent permitted
   8  * by a licensing agreement from ARM Limited.
   9  */
  10 #include <linux/fs.h>       /* file system operations */
  11 #include <asm/uaccess.h>    /* user space access */
  12
  13 #include "mali_ukk.h"
  14 #include "mali_osk.h"
  15 #include "mali_kernel_common.h"
  16 #include "mali_session.h"
  17 #include "mali_ukk_wrappers.h"
  18
  19 #include "mali_soft_job.h"
  20 #include "mali_timeline.h"
  21
  22 int soft_job_start_wrapper(struct mali_session_data *session, _mali_uk_soft_job_start_s __user *uargs)
  23 {
  24         _mali_uk_soft_job_start_s kargs;
  25         u32 type, point;
  26         u64 user_job;
  27         struct mali_timeline_fence fence;
  28         struct mali_soft_job *job = NULL;
  29         u32 __user *job_id_ptr = NULL;
  30
  31         /* If the job was started successfully, 0 is returned.  If there was an error, but the job
  32          * was started, we return -ENOENT.  For anything else returned, the job was not started. */
  33
  34         MALI_CHECK_NON_NULL(uargs, -EINVAL);
  35         MALI_CHECK_NON_NULL(session, -EINVAL);
  36
  37         MALI_DEBUG_ASSERT_POINTER(session->soft_job_system);
  38
  39         if (0 != copy_from_user(&kargs, uargs, sizeof(kargs))) {
  40                 return -EFAULT;
  41         }
  42
  43         type = kargs.type;
  44         user_job = kargs.user_job;
  45         job_id_ptr = (u32 __user *)(uintptr_t)kargs.job_id_ptr;
  46
  47         mali_timeline_fence_copy_uk_fence(&fence, &kargs.fence);
  48
  49         if ((MALI_SOFT_JOB_TYPE_USER_SIGNALED != type) && (MALI_SOFT_JOB_TYPE_SELF_SIGNALED != type)) {
  50                 MALI_DEBUG_PRINT_ERROR(("Invalid soft job type specified\n"));
  51                 return -EINVAL;
  52         }
  53
  54         /* Create soft job. */
  55         job = mali_soft_job_create(session->soft_job_system, (enum mali_soft_job_type)type, user_job);
  56         if (unlikely(NULL == job)) {
  57                 return map_errcode(_MALI_OSK_ERR_NOMEM);
  58         }
  59
  60         /* Write job id back to user space. */
  61         if (0 != put_user(job->id, job_id_ptr)) {
  62                 MALI_PRINT_ERROR(("Mali Soft Job: failed to put job id"));
  63                 mali_soft_job_destroy(job);
  64                 return map_errcode(_MALI_OSK_ERR_NOMEM);
  65         }
  66
  67         /* Start soft job. */
  68         point = mali_soft_job_start(job, &fence);
  69
  70         if (0 != put_user(point, &uargs->point)) {
  71                 /* Let user space know that something failed after the job was started. */
  72                 return -ENOENT;
  73         }
  74
  75         return 0;
  76 }
  77
  78 int soft_job_signal_wrapper(struct mali_session_data *session, _mali_uk_soft_job_signal_s __user *uargs)
  79 {
  80         u32 job_id;
  81         _mali_osk_errcode_t err;
  82
  83         MALI_DEBUG_ASSERT_POINTER(session);
  84
  85         if (0 != get_user(job_id, &uargs->job_id)) return -EFAULT;
  86
  87         err = mali_soft_job_system_signal_job(session->soft_job_system, job_id);
  88
  89         return map_errcode(err);
  90 }