1/*
2 * Copyright 2013 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 * Authors: Ben Skeggs
23 */
24#include "priv.h"
25#include "conn.h"
26#include "head.h"
27#include "ior.h"
28#include "outp.h"
29
30#include <core/client.h>
31#include <core/ramht.h>
32
33#include <nvif/class.h>
34#include <nvif/cl0046.h>
35#include <nvif/event.h>
36#include <nvif/unpack.h>
37
38static void
39nvkm_disp_vblank_fini(struct nvkm_event *event, int type, int id)
40{
41	struct nvkm_disp *disp = container_of(event, typeof(*disp), vblank);
42	struct nvkm_head *head = nvkm_head_find(disp, id);
43	if (head)
44		head->func->vblank_put(head);
45}
46
47static void
48nvkm_disp_vblank_init(struct nvkm_event *event, int type, int id)
49{
50	struct nvkm_disp *disp = container_of(event, typeof(*disp), vblank);
51	struct nvkm_head *head = nvkm_head_find(disp, id);
52	if (head)
53		head->func->vblank_get(head);
54}
55
56static const struct nvkm_event_func
57nvkm_disp_vblank_func = {
58	.init = nvkm_disp_vblank_init,
59	.fini = nvkm_disp_vblank_fini,
60};
61
62void
63nvkm_disp_vblank(struct nvkm_disp *disp, int head)
64{
65	nvkm_event_ntfy(&disp->vblank, head, NVKM_DISP_HEAD_EVENT_VBLANK);
66}
67
68static int
69nvkm_disp_class_new(struct nvkm_device *device,
70		    const struct nvkm_oclass *oclass, void *data, u32 size,
71		    struct nvkm_object **pobject)
72{
73	return nvkm_udisp_new(oclass, data, size, pobject);
74}
75
76static const struct nvkm_device_oclass
77nvkm_disp_sclass = {
78	.ctor = nvkm_disp_class_new,
79};
80
81static int
82nvkm_disp_class_get(struct nvkm_oclass *oclass, int index,
83		    const struct nvkm_device_oclass **class)
84{
85	struct nvkm_disp *disp = nvkm_disp(oclass->engine);
86	if (index == 0) {
87		oclass->base = disp->func->root;
88		*class = &nvkm_disp_sclass;
89		return 0;
90	}
91	return 1;
92}
93
94static void
95nvkm_disp_intr(struct nvkm_engine *engine)
96{
97	struct nvkm_disp *disp = nvkm_disp(engine);
98	disp->func->intr(disp);
99}
100
101static int
102nvkm_disp_fini(struct nvkm_engine *engine, bool suspend)
103{
104	struct nvkm_disp *disp = nvkm_disp(engine);
105	struct nvkm_outp *outp;
106
107	if (disp->func->fini)
108		disp->func->fini(disp, suspend);
109
110	list_for_each_entry(outp, &disp->outps, head) {
111		if (outp->func->fini)
112			outp->func->fini(outp);
113	}
114
115	return 0;
116}
117
118static int
119nvkm_disp_init(struct nvkm_engine *engine)
120{
121	struct nvkm_disp *disp = nvkm_disp(engine);
122	struct nvkm_outp *outp;
123	struct nvkm_ior *ior;
124
125	list_for_each_entry(outp, &disp->outps, head) {
126		if (outp->func->init)
127			outp->func->init(outp);
128	}
129
130	if (disp->func->init) {
131		int ret = disp->func->init(disp);
132		if (ret)
133			return ret;
134	}
135
136	/* Set 'normal' (ie. when it's attached to a head) state for
137	 * each output resource to 'fully enabled'.
138	 */
139	list_for_each_entry(ior, &disp->iors, head) {
140		if (ior->func->power)
141			ior->func->power(ior, true, true, true, true, true);
142	}
143
144	return 0;
145}
146
147static int
148nvkm_disp_oneinit(struct nvkm_engine *engine)
149{
150	struct nvkm_disp *disp = nvkm_disp(engine);
151	struct nvkm_subdev *subdev = &disp->engine.subdev;
152	struct nvkm_head *head;
153	int ret, i;
154
155	if (disp->func->oneinit) {
156		ret = disp->func->oneinit(disp);
157		if (ret)
158			return ret;
159	}
160
161	i = 0;
162	list_for_each_entry(head, &disp->heads, head)
163		i = max(i, head->id + 1);
164
165	return nvkm_event_init(&nvkm_disp_vblank_func, subdev, 1, i, &disp->vblank);
166}
167
168static void *
169nvkm_disp_dtor(struct nvkm_engine *engine)
170{
171	struct nvkm_disp *disp = nvkm_disp(engine);
172	struct nvkm_conn *conn;
173	struct nvkm_outp *outp;
174	struct nvkm_ior *ior;
175	struct nvkm_head *head;
176	void *data = disp;
177
178	nvkm_ramht_del(&disp->ramht);
179	nvkm_gpuobj_del(&disp->inst);
180
181	nvkm_event_fini(&disp->uevent);
182
183	if (disp->super.wq) {
184		destroy_workqueue(disp->super.wq);
185		mutex_destroy(&disp->super.mutex);
186	}
187
188	nvkm_event_fini(&disp->vblank);
189
190	while (!list_empty(&disp->conns)) {
191		conn = list_first_entry(&disp->conns, typeof(*conn), head);
192		list_del(&conn->head);
193		nvkm_conn_del(&conn);
194	}
195
196	while (!list_empty(&disp->outps)) {
197		outp = list_first_entry(&disp->outps, typeof(*outp), head);
198		list_del(&outp->head);
199		nvkm_outp_del(&outp);
200	}
201
202	while (!list_empty(&disp->iors)) {
203		ior = list_first_entry(&disp->iors, typeof(*ior), head);
204		nvkm_ior_del(&ior);
205	}
206
207	while (!list_empty(&disp->heads)) {
208		head = list_first_entry(&disp->heads, typeof(*head), head);
209		nvkm_head_del(&head);
210	}
211
212	if (disp->func && disp->func->dtor)
213		disp->func->dtor(disp);
214
215	return data;
216}
217
218static const struct nvkm_engine_func
219nvkm_disp = {
220	.dtor = nvkm_disp_dtor,
221	.oneinit = nvkm_disp_oneinit,
222	.init = nvkm_disp_init,
223	.fini = nvkm_disp_fini,
224	.intr = nvkm_disp_intr,
225	.base.sclass = nvkm_disp_class_get,
226};
227
228int
229nvkm_disp_new_(const struct nvkm_disp_func *func, struct nvkm_device *device,
230	       enum nvkm_subdev_type type, int inst, struct nvkm_disp **pdisp)
231{
232	struct nvkm_disp *disp;
233	int ret;
234
235	if (!(disp = *pdisp = kzalloc(sizeof(**pdisp), GFP_KERNEL)))
236		return -ENOMEM;
237
238	disp->func = func;
239	INIT_LIST_HEAD(&disp->heads);
240	INIT_LIST_HEAD(&disp->iors);
241	INIT_LIST_HEAD(&disp->outps);
242	INIT_LIST_HEAD(&disp->conns);
243	spin_lock_init(&disp->client.lock);
244
245	ret = nvkm_engine_ctor(&nvkm_disp, device, type, inst, true, &disp->engine);
246	if (ret) {
247		disp->func = NULL;
248		return ret;
249	}
250
251	if (func->super) {
252		disp->super.wq = create_singlethread_workqueue("nvkm-disp");
253		if (!disp->super.wq)
254			return -ENOMEM;
255
256		INIT_WORK(&disp->super.work, func->super);
257		mutex_init(&disp->super.mutex);
258	}
259
260	return nvkm_event_init(func->uevent, &disp->engine.subdev, 1, ARRAY_SIZE(disp->chan),
261			       &disp->uevent);
262}
263