udisp.c

  1/*
  2 * Copyright 2021 Red Hat Inc.
  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 COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
 18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 20 * OTHER DEALINGS IN THE SOFTWARE.
 21 */
 22#include "priv.h"
 23#include "conn.h"
 24#include "head.h"
 25#include "outp.h"
 26
 27#include <nvif/class.h>
 28#include <nvif/if0010.h>
 29
 30static int
 31nvkm_udisp_sclass(struct nvkm_object *object, int index, struct nvkm_oclass *sclass)
 32{
 33	struct nvkm_disp *disp = nvkm_udisp(object);
 34
 35	if (index-- == 0) {
 36		sclass->base = (struct nvkm_sclass) { 0, 0, NVIF_CLASS_CONN };
 37		sclass->ctor = nvkm_uconn_new;
 38		return 0;
 39	}
 40
 41	if (index-- == 0) {
 42		sclass->base = (struct nvkm_sclass) { 0, 0, NVIF_CLASS_OUTP };
 43		sclass->ctor = nvkm_uoutp_new;
 44		return 0;
 45	}
 46
 47	if (index-- == 0) {
 48		sclass->base = (struct nvkm_sclass) { 0, 0, NVIF_CLASS_HEAD };
 49		sclass->ctor = nvkm_uhead_new;
 50		return 0;
 51	}
 52
 53	if (disp->func->user[index].ctor) {
 54		sclass->base = disp->func->user[index].base;
 55		sclass->ctor = disp->func->user[index].ctor;
 56		return 0;
 57	}
 58
 59	return -EINVAL;
 60}
 61
 62static void *
 63nvkm_udisp_dtor(struct nvkm_object *object)
 64{
 65	struct nvkm_disp *disp = nvkm_udisp(object);
 66
 67	spin_lock(&disp->client.lock);
 68	if (object == &disp->client.object)
 69		disp->client.object.func = NULL;
 70	spin_unlock(&disp->client.lock);
 71	return NULL;
 72}
 73
 74static const struct nvkm_object_func
 75nvkm_udisp = {
 76	.dtor = nvkm_udisp_dtor,
 77	.sclass = nvkm_udisp_sclass,
 78};
 79
 80int
 81nvkm_udisp_new(const struct nvkm_oclass *oclass, void *argv, u32 argc, struct nvkm_object **pobject)
 82{
 83	struct nvkm_disp *disp = nvkm_disp(oclass->engine);
 84	struct nvkm_conn *conn;
 85	struct nvkm_outp *outp;
 86	struct nvkm_head *head;
 87	union nvif_disp_args *args = argv;
 88
 89	if (argc != sizeof(args->v0) || args->v0.version != 0)
 90		return -ENOSYS;
 91
 92	spin_lock(&disp->client.lock);
 93	if (disp->client.object.func) {
 94		spin_unlock(&disp->client.lock);
 95		return -EBUSY;
 96	}
 97	nvkm_object_ctor(&nvkm_udisp, oclass, &disp->client.object);
 98	*pobject = &disp->client.object;
 99	spin_unlock(&disp->client.lock);
100
101	args->v0.conn_mask = 0;
102	list_for_each_entry(conn, &disp->conns, head)
103		args->v0.conn_mask |= BIT(conn->index);
104
105	args->v0.outp_mask = 0;
106	list_for_each_entry(outp, &disp->outps, head)
107		args->v0.outp_mask |= BIT(outp->index);
108
109	args->v0.head_mask = 0;
110	list_for_each_entry(head, &disp->heads, head)
111		args->v0.head_mask |= BIT(head->id);
112
113	return 0;
114}