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      1 /*	$NetBSD: nouveau_nvkm_engine_sec2_base.c,v 1.2 2021/12/18 23:45:37 riastradh Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 2017, NVIDIA CORPORATION. All rights reserved.
      5  *
      6  * Permission is hereby granted, free of charge, to any person obtaining a
      7  * copy of this software and associated documentation files (the "Software"),
      8  * to deal in the Software without restriction, including without limitation
      9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
     10  * and/or sell copies of the Software, and to permit persons to whom the
     11  * Software is furnished to do so, subject to the following conditions:
     12  *
     13  * The above copyright notice and this permission notice shall be included in
     14  * all copies or substantial portions of the Software.
     15  *
     16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
     20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
     21  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
     22  * DEALINGS IN THE SOFTWARE.
     23  */
     24 #include <sys/cdefs.h>
     25 __KERNEL_RCSID(0, "$NetBSD: nouveau_nvkm_engine_sec2_base.c,v 1.2 2021/12/18 23:45:37 riastradh Exp $");
     26 
     27 #include "priv.h"
     28 
     29 #include <core/firmware.h>
     30 #include <subdev/top.h>
     31 
     32 static void
     33 nvkm_sec2_recv(struct work_struct *work)
     34 {
     35 	struct nvkm_sec2 *sec2 = container_of(work, typeof(*sec2), work);
     36 
     37 	if (!sec2->initmsg_received) {
     38 		int ret = sec2->func->initmsg(sec2);
     39 		if (ret) {
     40 			nvkm_error(&sec2->engine.subdev,
     41 				   "error parsing init message: %d\n", ret);
     42 			return;
     43 		}
     44 
     45 		sec2->initmsg_received = true;
     46 	}
     47 
     48 	nvkm_falcon_msgq_recv(sec2->msgq);
     49 }
     50 
     51 static void
     52 nvkm_sec2_intr(struct nvkm_engine *engine)
     53 {
     54 	struct nvkm_sec2 *sec2 = nvkm_sec2(engine);
     55 	sec2->func->intr(sec2);
     56 }
     57 
     58 static int
     59 nvkm_sec2_fini(struct nvkm_engine *engine, bool suspend)
     60 {
     61 	struct nvkm_sec2 *sec2 = nvkm_sec2(engine);
     62 
     63 	flush_work(&sec2->work);
     64 
     65 	if (suspend) {
     66 		nvkm_falcon_cmdq_fini(sec2->cmdq);
     67 		sec2->initmsg_received = false;
     68 	}
     69 
     70 	return 0;
     71 }
     72 
     73 static void *
     74 nvkm_sec2_dtor(struct nvkm_engine *engine)
     75 {
     76 	struct nvkm_sec2 *sec2 = nvkm_sec2(engine);
     77 	nvkm_falcon_msgq_del(&sec2->msgq);
     78 	nvkm_falcon_cmdq_del(&sec2->cmdq);
     79 	nvkm_falcon_qmgr_del(&sec2->qmgr);
     80 	nvkm_falcon_dtor(&sec2->falcon);
     81 	return sec2;
     82 }
     83 
     84 static const struct nvkm_engine_func
     85 nvkm_sec2 = {
     86 	.dtor = nvkm_sec2_dtor,
     87 	.fini = nvkm_sec2_fini,
     88 	.intr = nvkm_sec2_intr,
     89 };
     90 
     91 int
     92 nvkm_sec2_new_(const struct nvkm_sec2_fwif *fwif, struct nvkm_device *device,
     93 	       int index, u32 addr, struct nvkm_sec2 **psec2)
     94 {
     95 	struct nvkm_sec2 *sec2;
     96 	int ret;
     97 
     98 	if (!(sec2 = *psec2 = kzalloc(sizeof(*sec2), GFP_KERNEL)))
     99 		return -ENOMEM;
    100 
    101 	ret = nvkm_engine_ctor(&nvkm_sec2, device, index, true, &sec2->engine);
    102 	if (ret)
    103 		return ret;
    104 
    105 	fwif = nvkm_firmware_load(&sec2->engine.subdev, fwif, "Sec2", sec2);
    106 	if (IS_ERR(fwif))
    107 		return PTR_ERR(fwif);
    108 
    109 	sec2->func = fwif->func;
    110 
    111 	ret = nvkm_falcon_ctor(sec2->func->flcn, &sec2->engine.subdev,
    112 			       nvkm_subdev_name[index], addr, &sec2->falcon);
    113 	if (ret)
    114 		return ret;
    115 
    116 	if ((ret = nvkm_falcon_qmgr_new(&sec2->falcon, &sec2->qmgr)) ||
    117 	    (ret = nvkm_falcon_cmdq_new(sec2->qmgr, "cmdq", &sec2->cmdq)) ||
    118 	    (ret = nvkm_falcon_msgq_new(sec2->qmgr, "msgq", &sec2->msgq)))
    119 		return ret;
    120 
    121 	INIT_WORK(&sec2->work, nvkm_sec2_recv);
    122 	return 0;
    123 };
    124