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 "core.h"
23 #include "head.h"
24 
25 #include <nvif/cl507d.h>
26 #include <nvif/timer.h>
27 
28 #include "nouveau_bo.h"
29 
30 void
31 core507d_update(struct nv50_core *core, u32 *interlock, bool ntfy)
32 {
33 	u32 *push;
34 	if ((push = evo_wait(&core->chan, 5))) {
35 		if (ntfy) {
36 			evo_mthd(push, 0x0084, 1);
37 			evo_data(push, 0x80000000 | NV50_DISP_CORE_NTFY);
38 		}
39 		evo_mthd(push, 0x0080, 2);
40 		evo_data(push, interlock[NV50_DISP_INTERLOCK_BASE] |
41 			       interlock[NV50_DISP_INTERLOCK_OVLY]);
42 		evo_data(push, 0x00000000);
43 		evo_kick(push, &core->chan);
44 	}
45 }
46 
47 int
48 core507d_ntfy_wait_done(struct nouveau_bo *bo, u32 offset,
49 			struct nvif_device *device)
50 {
51 	s64 time = nvif_msec(device, 2000ULL,
52 		if (nouveau_bo_rd32(bo, offset / 4))
53 			break;
54 		usleep_range(1, 2);
55 	);
56 	return time < 0 ? time : 0;
57 }
58 
59 void
60 core507d_ntfy_init(struct nouveau_bo *bo, u32 offset)
61 {
62 	nouveau_bo_wr32(bo, offset / 4, 0x00000000);
63 }
64 
65 void
66 core507d_init(struct nv50_core *core)
67 {
68 	u32 *push;
69 	if ((push = evo_wait(&core->chan, 2))) {
70 		evo_mthd(push, 0x0088, 1);
71 		evo_data(push, core->chan.sync.handle);
72 		evo_kick(push, &core->chan);
73 	}
74 }
75 
76 static const struct nv50_core_func
77 core507d = {
78 	.init = core507d_init,
79 	.ntfy_init = core507d_ntfy_init,
80 	.ntfy_wait_done = core507d_ntfy_wait_done,
81 	.update = core507d_update,
82 	.head = &head507d,
83 	.dac = &dac507d,
84 	.sor = &sor507d,
85 	.pior = &pior507d,
86 };
87 
88 int
89 core507d_new_(const struct nv50_core_func *func, struct nouveau_drm *drm,
90 	      s32 oclass, struct nv50_core **pcore)
91 {
92 	struct nv50_disp_core_channel_dma_v0 args = {};
93 	struct nv50_disp *disp = nv50_disp(drm->dev);
94 	struct nv50_core *core;
95 	int ret;
96 
97 	if (!(core = *pcore = kzalloc(sizeof(*core), GFP_KERNEL)))
98 		return -ENOMEM;
99 	core->func = func;
100 
101 	ret = nv50_dmac_create(&drm->client.device, &disp->disp->object,
102 			       &oclass, 0, &args, sizeof(args),
103 			       disp->sync->bo.offset, &core->chan);
104 	if (ret) {
105 		NV_ERROR(drm, "core%04x allocation failed: %d\n", oclass, ret);
106 		return ret;
107 	}
108 
109 	return 0;
110 }
111 
112 int
113 core507d_new(struct nouveau_drm *drm, s32 oclass, struct nv50_core **pcore)
114 {
115 	return core507d_new_(&core507d, drm, oclass, pcore);
116 }
117