1/*
  2 * Copyright 2018 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 "curs.h"
 23#include "core.h"
 24#include "head.h"
 25
 26#include <nvif/cl507a.h>
 27#include <nvif/timer.h>
 28
 29#include <nvhw/class/cl507a.h>
 30
 31#include <drm/drm_atomic_helper.h>
 32#include <drm/drm_plane_helper.h>
 33
 34bool
 35curs507a_space(struct nv50_wndw *wndw)
 36{
 37	nvif_msec(&nouveau_drm(wndw->plane.dev)->client.device, 100,
 38		if (NVIF_TV32(&wndw->wimm.base.user, NV507A, FREE, COUNT, >=, 4))
 39			return true;
 40	);
 41
 42	WARN_ON(1);
 43	return false;
 44}
 45
 46static int
 47curs507a_update(struct nv50_wndw *wndw, u32 *interlock)
 48{
 49	struct nvif_object *user = &wndw->wimm.base.user;
 50	int ret = nvif_chan_wait(&wndw->wimm, 1);
 51	if (ret == 0) {
 52		NVIF_WR32(user, NV507A, UPDATE,
 53			  NVDEF(NV507A, UPDATE, INTERLOCK_WITH_CORE, DISABLE));
 54	}
 55	return ret;
 56}
 57
 58static int
 59curs507a_point(struct nv50_wndw *wndw, struct nv50_wndw_atom *asyw)
 60{
 61	struct nvif_object *user = &wndw->wimm.base.user;
 62	int ret = nvif_chan_wait(&wndw->wimm, 1);
 63	if (ret == 0) {
 64		NVIF_WR32(user, NV507A, SET_CURSOR_HOT_SPOT_POINT_OUT,
 65			  NVVAL(NV507A, SET_CURSOR_HOT_SPOT_POINT_OUT, X, asyw->point.x) |
 66			  NVVAL(NV507A, SET_CURSOR_HOT_SPOT_POINT_OUT, Y, asyw->point.y));
 67	}
 68	return ret;
 69}
 70
 71const struct nv50_wimm_func
 72curs507a = {
 73	.point = curs507a_point,
 74	.update = curs507a_update,
 75};
 76
 77static void
 78curs507a_prepare(struct nv50_wndw *wndw, struct nv50_head_atom *asyh,
 79		 struct nv50_wndw_atom *asyw)
 80{
 81	u32 handle = nv50_disp(wndw->plane.dev)->core->chan.vram.handle;
 82	u32 offset = asyw->image.offset[0];
 83	if (asyh->curs.handle != handle || asyh->curs.offset != offset) {
 84		asyh->curs.handle = handle;
 85		asyh->curs.offset = offset;
 86		asyh->set.curs = asyh->curs.visible;
 87	}
 88}
 89
 90static void
 91curs507a_release(struct nv50_wndw *wndw, struct nv50_wndw_atom *asyw,
 92		 struct nv50_head_atom *asyh)
 93{
 94	asyh->curs.visible = false;
 95}
 96
 97static int
 98curs507a_acquire(struct nv50_wndw *wndw, struct nv50_wndw_atom *asyw,
 99		 struct nv50_head_atom *asyh)
100{
101	struct nv50_head *head = nv50_head(asyw->state.crtc);
102	int ret;
103
104	ret = drm_atomic_helper_check_plane_state(&asyw->state, &asyh->state,
105						  DRM_PLANE_HELPER_NO_SCALING,
106						  DRM_PLANE_HELPER_NO_SCALING,
107						  true, true);
108	asyh->curs.visible = asyw->state.visible;
109	if (ret || !asyh->curs.visible)
110		return ret;
111
112	if (asyw->image.w != asyw->image.h)
113		return -EINVAL;
114
115	ret = head->func->curs_layout(head, asyw, asyh);
116	if (ret)
117		return ret;
118
119	return head->func->curs_format(head, asyw, asyh);
120}
121
122static const u32
123curs507a_format[] = {
124	DRM_FORMAT_ARGB8888,
125	0
126};
127
128static const struct nv50_wndw_func
129curs507a_wndw = {
130	.acquire = curs507a_acquire,
131	.release = curs507a_release,
132	.prepare = curs507a_prepare,
133};
134
135int
136curs507a_new_(const struct nv50_wimm_func *func, struct nouveau_drm *drm,
137	      int head, s32 oclass, u32 interlock_data,
138	      struct nv50_wndw **pwndw)
139{
140	struct nv50_disp_cursor_v0 args = {
141		.head = head,
142	};
143	struct nv50_disp *disp = nv50_disp(drm->dev);
144	struct nv50_wndw *wndw;
145	int ret;
146
147	ret = nv50_wndw_new_(&curs507a_wndw, drm->dev, DRM_PLANE_TYPE_CURSOR,
148			     "curs", head, curs507a_format, BIT(head),
149			     NV50_DISP_INTERLOCK_CURS, interlock_data, &wndw);
150	if (*pwndw = wndw, ret)
151		return ret;
152
153	ret = nvif_object_ctor(&disp->disp->object, "kmsCurs", 0, oclass,
154			       &args, sizeof(args), &wndw->wimm.base.user);
155	if (ret) {
156		NV_ERROR(drm, "curs%04x allocation failed: %d\n", oclass, ret);
157		return ret;
158	}
159
160	nvif_object_map(&wndw->wimm.base.user, NULL, 0);
161	wndw->immd = func;
162	wndw->ctxdma.parent = NULL;
163	return 0;
164}
165
166int
167curs507a_new(struct nouveau_drm *drm, int head, s32 oclass,
168	     struct nv50_wndw **pwndw)
169{
170	return curs507a_new_(&curs507a, drm, head, oclass,
171			     0x00000001 << (head * 8), pwndw);
172}