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 <engine/falcon.h> 26 27 static void * 28 nvkm_sec2_dtor(struct nvkm_engine *engine) 29 { 30 struct nvkm_sec2 *sec2 = nvkm_sec2(engine); 31 nvkm_msgqueue_del(&sec2->queue); 32 nvkm_falcon_del(&sec2->falcon); 33 return sec2; 34 } 35 36 static void 37 nvkm_sec2_intr(struct nvkm_engine *engine) 38 { 39 struct nvkm_sec2 *sec2 = nvkm_sec2(engine); 40 struct nvkm_subdev *subdev = &engine->subdev; 41 struct nvkm_device *device = subdev->device; 42 u32 disp = nvkm_rd32(device, 0x8701c); 43 u32 intr = nvkm_rd32(device, 0x87008) & disp & ~(disp >> 16); 44 45 if (intr & 0x00000040) { 46 schedule_work(&sec2->work); 47 nvkm_wr32(device, 0x87004, 0x00000040); 48 intr &= ~0x00000040; 49 } 50 51 if (intr) { 52 nvkm_error(subdev, "unhandled intr %08x\n", intr); 53 nvkm_wr32(device, 0x87004, intr); 54 55 } 56 } 57 58 static void 59 nvkm_sec2_recv(struct work_struct *work) 60 { 61 struct nvkm_sec2 *sec2 = container_of(work, typeof(*sec2), work); 62 63 if (!sec2->queue) { 64 nvkm_warn(&sec2->engine.subdev, 65 "recv function called while no firmware set!\n"); 66 return; 67 } 68 69 nvkm_msgqueue_recv(sec2->queue); 70 } 71 72 73 static int 74 nvkm_sec2_oneinit(struct nvkm_engine *engine) 75 { 76 struct nvkm_sec2 *sec2 = nvkm_sec2(engine); 77 return nvkm_falcon_v1_new(&sec2->engine.subdev, "SEC2", 0x87000, 78 &sec2->falcon); 79 } 80 81 static int 82 nvkm_sec2_fini(struct nvkm_engine *engine, bool suspend) 83 { 84 struct nvkm_sec2 *sec2 = nvkm_sec2(engine); 85 flush_work(&sec2->work); 86 return 0; 87 } 88 89 static const struct nvkm_engine_func 90 nvkm_sec2 = { 91 .dtor = nvkm_sec2_dtor, 92 .oneinit = nvkm_sec2_oneinit, 93 .fini = nvkm_sec2_fini, 94 .intr = nvkm_sec2_intr, 95 }; 96 97 int 98 nvkm_sec2_new_(struct nvkm_device *device, int index, 99 struct nvkm_sec2 **psec2) 100 { 101 struct nvkm_sec2 *sec2; 102 103 if (!(sec2 = *psec2 = kzalloc(sizeof(*sec2), GFP_KERNEL))) 104 return -ENOMEM; 105 INIT_WORK(&sec2->work, nvkm_sec2_recv); 106 107 return nvkm_engine_ctor(&nvkm_sec2, device, index, true, &sec2->engine); 108 }; 109