Home | History | Annotate | Line # | Download | only in fault 
      1 /*	$NetBSD: nouveau_nvkm_subdev_fault_user.c,v 1.3 2021/12/19 10:51:58 riastradh Exp $	*/
      2 
      3 /*
      4  * Copyright 2018 Red Hat Inc.
      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 COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
     20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
     21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
     22  * OTHER DEALINGS IN THE SOFTWARE.
     23  */
     24 #include <sys/cdefs.h>
     25 __KERNEL_RCSID(0, "$NetBSD: nouveau_nvkm_subdev_fault_user.c,v 1.3 2021/12/19 10:51:58 riastradh Exp $");
     26 
     27 #include "priv.h"
     28 
     29 #include <core/memory.h>
     30 #include <subdev/mmu.h>
     31 
     32 #include <nvif/clb069.h>
     33 #include <nvif/unpack.h>
     34 
     35 static int
     36 #ifdef __NetBSD__
     37 nvkm_ufault_map(struct nvkm_object *object, void *argv, u32 argc,
     38 		enum nvkm_object_map *type,
     39 		bus_space_tag_t *tag, u64 *addr, u64 *size)
     40 #else
     41 nvkm_ufault_map(struct nvkm_object *object, void *argv, u32 argc,
     42 		enum nvkm_object_map *type, u64 *addr, u64 *size)
     43 #endif
     44 {
     45 	struct nvkm_fault_buffer *buffer = nvkm_fault_buffer(object);
     46 	struct nvkm_device *device = buffer->fault->subdev.device;
     47 	*type = NVKM_OBJECT_MAP_IO;
     48 #ifdef __NetBSD__
     49 	*tag = device->func->resource_tag(device, 3);
     50 #endif
     51 	*addr = device->func->resource_addr(device, 3) + buffer->addr;
     52 	*size = nvkm_memory_size(buffer->mem);
     53 	return 0;
     54 }
     55 
     56 static int
     57 nvkm_ufault_ntfy(struct nvkm_object *object, u32 type,
     58 		 struct nvkm_event **pevent)
     59 {
     60 	struct nvkm_fault_buffer *buffer = nvkm_fault_buffer(object);
     61 	if (type == NVB069_V0_NTFY_FAULT) {
     62 		*pevent = &buffer->fault->event;
     63 		return 0;
     64 	}
     65 	return -EINVAL;
     66 }
     67 
     68 static int
     69 nvkm_ufault_fini(struct nvkm_object *object, bool suspend)
     70 {
     71 	struct nvkm_fault_buffer *buffer = nvkm_fault_buffer(object);
     72 	buffer->fault->func->buffer.fini(buffer);
     73 	return 0;
     74 }
     75 
     76 static int
     77 nvkm_ufault_init(struct nvkm_object *object)
     78 {
     79 	struct nvkm_fault_buffer *buffer = nvkm_fault_buffer(object);
     80 	buffer->fault->func->buffer.init(buffer);
     81 	return 0;
     82 }
     83 
     84 static void *
     85 nvkm_ufault_dtor(struct nvkm_object *object)
     86 {
     87 	return NULL;
     88 }
     89 
     90 static const struct nvkm_object_func
     91 nvkm_ufault = {
     92 	.dtor = nvkm_ufault_dtor,
     93 	.init = nvkm_ufault_init,
     94 	.fini = nvkm_ufault_fini,
     95 	.ntfy = nvkm_ufault_ntfy,
     96 	.map = nvkm_ufault_map,
     97 };
     98 
     99 int
    100 nvkm_ufault_new(struct nvkm_device *device, const struct nvkm_oclass *oclass,
    101 		void *argv, u32 argc, struct nvkm_object **pobject)
    102 {
    103 	union {
    104 		struct nvif_clb069_v0 v0;
    105 	} *args = argv;
    106 	struct nvkm_fault *fault = device->fault;
    107 	struct nvkm_fault_buffer *buffer = fault->buffer[fault->func->user.rp];
    108 	int ret = -ENOSYS;
    109 
    110 	if (!(ret = nvif_unpack(ret, &argv, &argc, args->v0, 0, 0, false))) {
    111 		args->v0.entries = buffer->entries;
    112 		args->v0.get = buffer->get;
    113 		args->v0.put = buffer->put;
    114 	} else
    115 		return ret;
    116 
    117 	nvkm_object_ctor(&nvkm_ufault, oclass, &buffer->object);
    118 	*pobject = &buffer->object;
    119 	return 0;
    120 }
    121