root/drivers/gpu/drm/nouveau/nvkm/engine/sec2/base.c

DEFINITIONS

1. nvkm_sec2_dtor
2. nvkm_sec2_intr
3. nvkm_sec2_recv
4. nvkm_sec2_oneinit
5. nvkm_sec2_fini
6. nvkm_sec2_new_

   1 /*
   2  * Copyright (c) 2017, NVIDIA CORPORATION. All rights reserved.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  18  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  19  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  20  * DEALINGS IN THE SOFTWARE.
  21  */
  22 #include "priv.h"
  23 
  24 #include <core/msgqueue.h>
  25 #include <subdev/top.h>
  26 #include <engine/falcon.h>
  27 
  28 static void *
  29 nvkm_sec2_dtor(struct nvkm_engine *engine)
  30 {
  31         struct nvkm_sec2 *sec2 = nvkm_sec2(engine);
  32         nvkm_msgqueue_del(&sec2->queue);
  33         nvkm_falcon_del(&sec2->falcon);
  34         return sec2;
  35 }
  36 
  37 static void
  38 nvkm_sec2_intr(struct nvkm_engine *engine)
  39 {
  40         struct nvkm_sec2 *sec2 = nvkm_sec2(engine);
  41         struct nvkm_subdev *subdev = &engine->subdev;
  42         struct nvkm_device *device = subdev->device;
  43         u32 disp = nvkm_rd32(device, sec2->addr + 0x01c);
  44         u32 intr = nvkm_rd32(device, sec2->addr + 0x008) & disp & ~(disp >> 16);
  45 
  46         if (intr & 0x00000040) {
  47                 schedule_work(&sec2->work);
  48                 nvkm_wr32(device, sec2->addr + 0x004, 0x00000040);
  49                 intr &= ~0x00000040;
  50         }
  51 
  52         if (intr) {
  53                 nvkm_error(subdev, "unhandled intr %08x\n", intr);
  54                 nvkm_wr32(device, sec2->addr + 0x004, intr);
  55 
  56         }
  57 }
  58 
  59 static void
  60 nvkm_sec2_recv(struct work_struct *work)
  61 {
  62         struct nvkm_sec2 *sec2 = container_of(work, typeof(*sec2), work);
  63 
  64         if (!sec2->queue) {
  65                 nvkm_warn(&sec2->engine.subdev,
  66                           "recv function called while no firmware set!\n");
  67                 return;
  68         }
  69 
  70         nvkm_msgqueue_recv(sec2->queue);
  71 }
  72 
  73 
  74 static int
  75 nvkm_sec2_oneinit(struct nvkm_engine *engine)
  76 {
  77         struct nvkm_sec2 *sec2 = nvkm_sec2(engine);
  78         struct nvkm_subdev *subdev = &sec2->engine.subdev;
  79 
  80         if (!sec2->addr) {
  81                 sec2->addr = nvkm_top_addr(subdev->device, subdev->index);
  82                 if (WARN_ON(!sec2->addr))
  83                         return -EINVAL;
  84         }
  85 
  86         return nvkm_falcon_v1_new(subdev, "SEC2", sec2->addr, &sec2->falcon);
  87 }
  88 
  89 static int
  90 nvkm_sec2_fini(struct nvkm_engine *engine, bool suspend)
  91 {
  92         struct nvkm_sec2 *sec2 = nvkm_sec2(engine);
  93         flush_work(&sec2->work);
  94         return 0;
  95 }
  96 
  97 static const struct nvkm_engine_func
  98 nvkm_sec2 = {
  99         .dtor = nvkm_sec2_dtor,
 100         .oneinit = nvkm_sec2_oneinit,
 101         .fini = nvkm_sec2_fini,
 102         .intr = nvkm_sec2_intr,
 103 };
 104 
 105 int
 106 nvkm_sec2_new_(struct nvkm_device *device, int index, u32 addr,
 107                struct nvkm_sec2 **psec2)
 108 {
 109         struct nvkm_sec2 *sec2;
 110 
 111         if (!(sec2 = *psec2 = kzalloc(sizeof(*sec2), GFP_KERNEL)))
 112                 return -ENOMEM;
 113         sec2->addr = addr;
 114         INIT_WORK(&sec2->work, nvkm_sec2_recv);
 115 
 116         return nvkm_engine_ctor(&nvkm_sec2, device, index, true, &sec2->engine);
 117 };